* [B.A.T.M.A.N.] pull request: batman-adv 20140322
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n
Hello David,
here you have our patchset for net-next/linux-3.15.
They are 16 patches but most of them are just small cleanups and kerneldoc
improvements.
The only big change is the one from patch 8 to 13 by Linus Lüssing that
introduces a new multicast packets optimisation. This new component aims to
reduce the air overhead by sending multicast packets as bat-unicast
when only one destination exists or by dropping them directly at the source if
the multicast group is totally empty.
In patch 11 Linus introduces an atomic_t variable, that like others that we
already have is only object of write and read, thus making the atomic
characteristic totally useless.
Unfortunately this is part of our sysfs framework, that helps the developer to
introduce new knobs by using few macros only. For this reason we decided to keep
Linus' new knob for now, but I'd like to let you know that we are in the process
of re-working such framework in order to convert all the current (useless)
atomic_t to boolean in one go.
Please pull or let me know of any problem!
Thanks a lot,
Antonio
The following changes since commit 65025079d2ddb8091d30b356c0b0f79a8d2254c4:
Merge branch 'ptp-next' (2014-03-21 14:21:45 -0400)
are available in the git repository at:
git://git.open-mesh.org/linux-merge.git tags/batman-adv-for-davem
for you to fetch changes up to 3f2532fcde67faf496fa21c5c04c5e8cf73c9e01:
batman-adv: Start new development cycle (2014-03-22 09:18:59 +0100)
----------------------------------------------------------------
Included changes:
- use ether_addr_copy instead of memcpy when possible
- implement new multicast packet optimisation
- improve several kerneldoc sections
- minor code cleanups
----------------------------------------------------------------
Antonio Quartulli (4):
batman-adv: prefer ether_addr_copy to memcpy
batman-adv: add kerneldoc for dst_hint argument
batman-adv: improve the TT flags documentation
batman-adv: improve DAT documentation
Fengguang Wu (1):
batman-adv: fix coccinelle warnings
Linus Lüssing (8):
batman-adv: use vlan_/eth_hdr() instead of skb->data in interface_tx path
batman-adv: remove obsolete skb_reset_mac_header() in batadv_bla_tx()
batman-adv: Multicast Listener Announcements via Translation Table
batman-adv: introduce capability initialization bitfield
batman-adv: Announce new capability via multicast TVLV
batman-adv: Modified forwarding behaviour for multicast packets
batman-adv: Add IPv4 link-local/IPv6-ll-all-nodes multicast support
batman-adv: Send multicast packets to nodes with a WANT_ALL flag
Marek Lindner (1):
batman-adv: call unregister_netdev() to have it handle the locking for us
Simon Wunderlich (2):
batman-adv: fix a few kerneldoc inconsistencies
batman-adv: Start new development cycle
Documentation/ABI/testing/sysfs-class-net-mesh | 9 +
net/batman-adv/Kconfig | 9 +
net/batman-adv/Makefile | 1 +
net/batman-adv/bat_iv_ogm.c | 10 +-
net/batman-adv/bridge_loop_avoidance.c | 35 +-
net/batman-adv/distributed-arp-table.c | 9 +-
net/batman-adv/distributed-arp-table.h | 3 +
net/batman-adv/fragmentation.c | 4 +-
net/batman-adv/gateway_client.c | 8 +-
net/batman-adv/icmp_socket.c | 11 +-
net/batman-adv/main.c | 19 +-
net/batman-adv/main.h | 4 +-
net/batman-adv/multicast.c | 748 +++++++++++++++++++++++++
net/batman-adv/multicast.h | 80 +++
net/batman-adv/network-coding.c | 26 +-
net/batman-adv/originator.c | 11 +-
net/batman-adv/packet.h | 53 +-
net/batman-adv/routing.c | 17 +-
net/batman-adv/send.c | 31 +-
net/batman-adv/send.h | 7 +
net/batman-adv/soft-interface.c | 48 +-
net/batman-adv/sysfs.c | 6 +
net/batman-adv/translation-table.c | 140 +++--
net/batman-adv/translation-table.h | 2 +
net/batman-adv/types.h | 90 ++-
25 files changed, 1237 insertions(+), 144 deletions(-)
create mode 100644 net/batman-adv/multicast.c
create mode 100644 net/batman-adv/multicast.h
^ permalink raw reply [flat|nested] 36+ messages in thread* [PATCH 01/16] batman-adv: fix coccinelle warnings
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: netdev, b.a.t.m.a.n, Fengguang Wu, Martin Hundebøll,
Marek Lindner, Antonio Quartulli
From: Fengguang Wu <fengguang.wu@intel.com>
net/batman-adv/network-coding.c:1535:1-7: Replace memcpy with struct assignment
Generated by: coccinelle/misc/memcpy-assign.cocci
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/network-coding.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index f1b604d..801ece6 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1636,7 +1636,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
/* Reconstruct original mac header */
ethhdr = eth_hdr(skb);
- memcpy(ethhdr, ðhdr_tmp, sizeof(*ethhdr));
+ *ethhdr = ethhdr_tmp;
/* Select the correct unicast header information based on the location
* of our mac address in the coded_packet header
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [B.A.T.M.A.N.] [PATCH 01/16] batman-adv: fix coccinelle warnings
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: Fengguang Wu, Marek Lindner, netdev, b.a.t.m.a.n,
Antonio Quartulli, Martin Hundebøll
From: Fengguang Wu <fengguang.wu@intel.com>
net/batman-adv/network-coding.c:1535:1-7: Replace memcpy with struct assignment
Generated by: coccinelle/misc/memcpy-assign.cocci
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/network-coding.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index f1b604d..801ece6 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1636,7 +1636,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
/* Reconstruct original mac header */
ethhdr = eth_hdr(skb);
- memcpy(ethhdr, ðhdr_tmp, sizeof(*ethhdr));
+ *ethhdr = ethhdr_tmp;
/* Select the correct unicast header information based on the location
* of our mac address in the coded_packet header
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 02/16] batman-adv: use vlan_/eth_hdr() instead of skb->data in interface_tx path
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: netdev, b.a.t.m.a.n, Linus Lüssing, Marek Lindner,
Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
Our .ndo_start_xmit handler (batadv_interface_tx()) can rely on having
the skb mac header pointer set correctly since the following commit
present in kernels >= 3.9:
"net: reset mac header in dev_start_xmit()" (6d1ccff627)
Therefore we can safely use eth_hdr() and vlan_eth_hdr() instead of
skb->data now, which spares us some ugly type casts.
At the same time set the mac_header in batadv_dat_snoop_incoming_arp_request()
before sending the skb along the TX path.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/bridge_loop_avoidance.c | 2 +-
net/batman-adv/distributed-arp-table.c | 5 +++++
net/batman-adv/gateway_client.c | 6 +++---
net/batman-adv/send.c | 11 +++++------
net/batman-adv/soft-interface.c | 8 ++++----
5 files changed, 18 insertions(+), 14 deletions(-)
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 05f0712..73d8372 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -882,7 +882,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
proto = ethhdr->h_proto;
headlen = ETH_HLEN;
if (vid & BATADV_VLAN_HAS_TAG) {
- vhdr = (struct vlan_ethhdr *)ethhdr;
+ vhdr = vlan_eth_hdr(skb);
proto = vhdr->h_vlan_encapsulated_proto;
headlen += VLAN_HLEN;
}
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index edee504..5bb37a8 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -1027,6 +1027,11 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
if (!skb_new)
goto out;
+ /* the rest of the TX path assumes that the mac_header offset pointing
+ * to the inner Ethernet header has been set, therefore reset it now.
+ */
+ skb_reset_mac_header(skb_new);
+
if (vid & BATADV_VLAN_HAS_TAG)
skb_new = vlan_insert_tag(skb_new, htons(ETH_P_8021Q),
vid & VLAN_VID_MASK);
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index d7fafc1..07c7f21 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -678,7 +678,7 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
if (!pskb_may_pull(skb, *header_len + ETH_HLEN))
return BATADV_DHCP_NO;
- ethhdr = (struct ethhdr *)skb->data;
+ ethhdr = eth_hdr(skb);
proto = ethhdr->h_proto;
*header_len += ETH_HLEN;
@@ -687,7 +687,7 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
if (!pskb_may_pull(skb, *header_len + VLAN_HLEN))
return BATADV_DHCP_NO;
- vhdr = (struct vlan_ethhdr *)skb->data;
+ vhdr = vlan_eth_hdr(skb);
proto = vhdr->h_vlan_encapsulated_proto;
*header_len += VLAN_HLEN;
}
@@ -726,7 +726,7 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
return BATADV_DHCP_NO;
/* skb->data might have been reallocated by pskb_may_pull() */
- ethhdr = (struct ethhdr *)skb->data;
+ ethhdr = eth_hdr(skb);
if (ntohs(ethhdr->h_proto) == ETH_P_8021Q)
ethhdr = (struct ethhdr *)(skb->data + VLAN_HLEN);
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 843febd..1703a2e 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -256,7 +256,7 @@ static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
{
struct ethhdr *ethhdr;
struct batadv_unicast_packet *unicast_packet;
- int ret = NET_XMIT_DROP, hdr_size;
+ int ret = NET_XMIT_DROP;
if (!orig_node)
goto out;
@@ -265,16 +265,12 @@ static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
case BATADV_UNICAST:
if (!batadv_send_skb_prepare_unicast(skb, orig_node))
goto out;
-
- hdr_size = sizeof(*unicast_packet);
break;
case BATADV_UNICAST_4ADDR:
if (!batadv_send_skb_prepare_unicast_4addr(bat_priv, skb,
orig_node,
packet_subtype))
goto out;
-
- hdr_size = sizeof(struct batadv_unicast_4addr_packet);
break;
default:
/* this function supports UNICAST and UNICAST_4ADDR only. It
@@ -283,7 +279,10 @@ static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
goto out;
}
- ethhdr = (struct ethhdr *)(skb->data + hdr_size);
+ /* skb->data might have been reallocated by
+ * batadv_send_skb_prepare_unicast{,_4addr}()
+ */
+ ethhdr = eth_hdr(skb);
unicast_packet = (struct batadv_unicast_packet *)skb->data;
/* inform the destination node that we are still missing a correct route
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index f82c267..c4392fc 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -176,11 +176,11 @@ static int batadv_interface_tx(struct sk_buff *skb,
soft_iface->trans_start = jiffies;
vid = batadv_get_vid(skb, 0);
- ethhdr = (struct ethhdr *)skb->data;
+ ethhdr = eth_hdr(skb);
switch (ntohs(ethhdr->h_proto)) {
case ETH_P_8021Q:
- vhdr = (struct vlan_ethhdr *)skb->data;
+ vhdr = vlan_eth_hdr(skb);
if (vhdr->h_vlan_encapsulated_proto != ethertype)
break;
@@ -194,7 +194,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
goto dropped;
/* skb->data might have been reallocated by batadv_bla_tx() */
- ethhdr = (struct ethhdr *)skb->data;
+ ethhdr = eth_hdr(skb);
/* Register the client MAC in the transtable */
if (!is_multicast_ether_addr(ethhdr->h_source)) {
@@ -230,7 +230,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
/* skb->data may have been modified by
* batadv_gw_dhcp_recipient_get()
*/
- ethhdr = (struct ethhdr *)skb->data;
+ ethhdr = eth_hdr(skb);
/* if gw_mode is on, broadcast any non-DHCP message.
* All the DHCP packets are going to be sent as unicast
*/
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread* [B.A.T.M.A.N.] [PATCH 02/16] batman-adv: use vlan_/eth_hdr() instead of skb->data in interface_tx path
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
Our .ndo_start_xmit handler (batadv_interface_tx()) can rely on having
the skb mac header pointer set correctly since the following commit
present in kernels >= 3.9:
"net: reset mac header in dev_start_xmit()" (6d1ccff627)
Therefore we can safely use eth_hdr() and vlan_eth_hdr() instead of
skb->data now, which spares us some ugly type casts.
At the same time set the mac_header in batadv_dat_snoop_incoming_arp_request()
before sending the skb along the TX path.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/bridge_loop_avoidance.c | 2 +-
net/batman-adv/distributed-arp-table.c | 5 +++++
net/batman-adv/gateway_client.c | 6 +++---
net/batman-adv/send.c | 11 +++++------
net/batman-adv/soft-interface.c | 8 ++++----
5 files changed, 18 insertions(+), 14 deletions(-)
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 05f0712..73d8372 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -882,7 +882,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
proto = ethhdr->h_proto;
headlen = ETH_HLEN;
if (vid & BATADV_VLAN_HAS_TAG) {
- vhdr = (struct vlan_ethhdr *)ethhdr;
+ vhdr = vlan_eth_hdr(skb);
proto = vhdr->h_vlan_encapsulated_proto;
headlen += VLAN_HLEN;
}
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index edee504..5bb37a8 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -1027,6 +1027,11 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
if (!skb_new)
goto out;
+ /* the rest of the TX path assumes that the mac_header offset pointing
+ * to the inner Ethernet header has been set, therefore reset it now.
+ */
+ skb_reset_mac_header(skb_new);
+
if (vid & BATADV_VLAN_HAS_TAG)
skb_new = vlan_insert_tag(skb_new, htons(ETH_P_8021Q),
vid & VLAN_VID_MASK);
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index d7fafc1..07c7f21 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -678,7 +678,7 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
if (!pskb_may_pull(skb, *header_len + ETH_HLEN))
return BATADV_DHCP_NO;
- ethhdr = (struct ethhdr *)skb->data;
+ ethhdr = eth_hdr(skb);
proto = ethhdr->h_proto;
*header_len += ETH_HLEN;
@@ -687,7 +687,7 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
if (!pskb_may_pull(skb, *header_len + VLAN_HLEN))
return BATADV_DHCP_NO;
- vhdr = (struct vlan_ethhdr *)skb->data;
+ vhdr = vlan_eth_hdr(skb);
proto = vhdr->h_vlan_encapsulated_proto;
*header_len += VLAN_HLEN;
}
@@ -726,7 +726,7 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
return BATADV_DHCP_NO;
/* skb->data might have been reallocated by pskb_may_pull() */
- ethhdr = (struct ethhdr *)skb->data;
+ ethhdr = eth_hdr(skb);
if (ntohs(ethhdr->h_proto) == ETH_P_8021Q)
ethhdr = (struct ethhdr *)(skb->data + VLAN_HLEN);
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 843febd..1703a2e 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -256,7 +256,7 @@ static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
{
struct ethhdr *ethhdr;
struct batadv_unicast_packet *unicast_packet;
- int ret = NET_XMIT_DROP, hdr_size;
+ int ret = NET_XMIT_DROP;
if (!orig_node)
goto out;
@@ -265,16 +265,12 @@ static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
case BATADV_UNICAST:
if (!batadv_send_skb_prepare_unicast(skb, orig_node))
goto out;
-
- hdr_size = sizeof(*unicast_packet);
break;
case BATADV_UNICAST_4ADDR:
if (!batadv_send_skb_prepare_unicast_4addr(bat_priv, skb,
orig_node,
packet_subtype))
goto out;
-
- hdr_size = sizeof(struct batadv_unicast_4addr_packet);
break;
default:
/* this function supports UNICAST and UNICAST_4ADDR only. It
@@ -283,7 +279,10 @@ static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
goto out;
}
- ethhdr = (struct ethhdr *)(skb->data + hdr_size);
+ /* skb->data might have been reallocated by
+ * batadv_send_skb_prepare_unicast{,_4addr}()
+ */
+ ethhdr = eth_hdr(skb);
unicast_packet = (struct batadv_unicast_packet *)skb->data;
/* inform the destination node that we are still missing a correct route
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index f82c267..c4392fc 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -176,11 +176,11 @@ static int batadv_interface_tx(struct sk_buff *skb,
soft_iface->trans_start = jiffies;
vid = batadv_get_vid(skb, 0);
- ethhdr = (struct ethhdr *)skb->data;
+ ethhdr = eth_hdr(skb);
switch (ntohs(ethhdr->h_proto)) {
case ETH_P_8021Q:
- vhdr = (struct vlan_ethhdr *)skb->data;
+ vhdr = vlan_eth_hdr(skb);
if (vhdr->h_vlan_encapsulated_proto != ethertype)
break;
@@ -194,7 +194,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
goto dropped;
/* skb->data might have been reallocated by batadv_bla_tx() */
- ethhdr = (struct ethhdr *)skb->data;
+ ethhdr = eth_hdr(skb);
/* Register the client MAC in the transtable */
if (!is_multicast_ether_addr(ethhdr->h_source)) {
@@ -230,7 +230,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
/* skb->data may have been modified by
* batadv_gw_dhcp_recipient_get()
*/
- ethhdr = (struct ethhdr *)skb->data;
+ ethhdr = eth_hdr(skb);
/* if gw_mode is on, broadcast any non-DHCP message.
* All the DHCP packets are going to be sent as unicast
*/
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 03/16] batman-adv: remove obsolete skb_reset_mac_header() in batadv_bla_tx()
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: netdev, b.a.t.m.a.n, Linus Lüssing, Marek Lindner,
Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
Our .ndo_start_xmit handler (batadv_interface_tx()) can rely on having
the skb mac header pointer set correctly since the following commit
present in kernels >= 3.9:
"net: reset mac header in dev_start_xmit()" (6d1ccff627)
Therefore this commit removes the according, now redundant,
skb_reset_mac_header() call in batadv_bla_tx().
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/bridge_loop_avoidance.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 73d8372..70d781a 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -1547,9 +1547,6 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
if (!atomic_read(&bat_priv->bridge_loop_avoidance))
goto allow;
- /* in VLAN case, the mac header might not be set. */
- skb_reset_mac_header(skb);
-
if (batadv_bla_process_claim(bat_priv, primary_if, skb))
goto handled;
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [B.A.T.M.A.N.] [PATCH 03/16] batman-adv: remove obsolete skb_reset_mac_header() in batadv_bla_tx()
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
Our .ndo_start_xmit handler (batadv_interface_tx()) can rely on having
the skb mac header pointer set correctly since the following commit
present in kernels >= 3.9:
"net: reset mac header in dev_start_xmit()" (6d1ccff627)
Therefore this commit removes the according, now redundant,
skb_reset_mac_header() call in batadv_bla_tx().
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/bridge_loop_avoidance.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 73d8372..70d781a 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -1547,9 +1547,6 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
if (!atomic_read(&bat_priv->bridge_loop_avoidance))
goto allow;
- /* in VLAN case, the mac header might not be set. */
- skb_reset_mac_header(skb);
-
if (batadv_bla_process_claim(bat_priv, primary_if, skb))
goto handled;
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 04/16] batman-adv: prefer ether_addr_copy to memcpy
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Antonio Quartulli, Marek Lindner
On some architectures ether_addr_copy() is slightly faster
than memcpy() therefore use the former when possible.
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
---
net/batman-adv/bat_iv_ogm.c | 10 +++++-----
net/batman-adv/bridge_loop_avoidance.c | 30 +++++++++++++++---------------
net/batman-adv/distributed-arp-table.c | 4 ++--
net/batman-adv/fragmentation.c | 4 ++--
net/batman-adv/gateway_client.c | 2 +-
net/batman-adv/icmp_socket.c | 11 ++++++-----
net/batman-adv/main.c | 4 ++--
net/batman-adv/network-coding.c | 24 ++++++++++++------------
net/batman-adv/originator.c | 4 ++--
net/batman-adv/routing.c | 17 ++++++++---------
net/batman-adv/send.c | 8 ++++----
net/batman-adv/soft-interface.c | 8 ++++----
net/batman-adv/translation-table.c | 15 +++++++--------
13 files changed, 70 insertions(+), 71 deletions(-)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 8323bce..b3bd4ec 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -347,10 +347,10 @@ static void batadv_iv_ogm_iface_update_mac(struct batadv_hard_iface *hard_iface)
unsigned char *ogm_buff = hard_iface->bat_iv.ogm_buff;
batadv_ogm_packet = (struct batadv_ogm_packet *)ogm_buff;
- memcpy(batadv_ogm_packet->orig,
- hard_iface->net_dev->dev_addr, ETH_ALEN);
- memcpy(batadv_ogm_packet->prev_sender,
- hard_iface->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(batadv_ogm_packet->orig,
+ hard_iface->net_dev->dev_addr);
+ ether_addr_copy(batadv_ogm_packet->prev_sender,
+ hard_iface->net_dev->dev_addr);
}
static void
@@ -830,7 +830,7 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node,
tvlv_len = ntohs(batadv_ogm_packet->tvlv_len);
batadv_ogm_packet->ttl--;
- memcpy(batadv_ogm_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
+ ether_addr_copy(batadv_ogm_packet->prev_sender, ethhdr->h_source);
/* apply hop penalty */
batadv_ogm_packet->tq = batadv_hop_penalty(batadv_ogm_packet->tq,
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 70d781a..6f0d9ec 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -191,7 +191,7 @@ batadv_backbone_hash_find(struct batadv_priv *bat_priv,
if (!hash)
return NULL;
- memcpy(search_entry.orig, addr, ETH_ALEN);
+ ether_addr_copy(search_entry.orig, addr);
search_entry.vid = vid;
index = batadv_choose_backbone_gw(&search_entry, hash->size);
@@ -305,7 +305,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
/* normal claim frame
* set Ethernet SRC to the clients mac
*/
- memcpy(ethhdr->h_source, mac, ETH_ALEN);
+ ether_addr_copy(ethhdr->h_source, mac);
batadv_dbg(BATADV_DBG_BLA, bat_priv,
"bla_send_claim(): CLAIM %pM on vid %d\n", mac,
BATADV_PRINT_VID(vid));
@@ -314,7 +314,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
/* unclaim frame
* set HW SRC to the clients mac
*/
- memcpy(hw_src, mac, ETH_ALEN);
+ ether_addr_copy(hw_src, mac);
batadv_dbg(BATADV_DBG_BLA, bat_priv,
"bla_send_claim(): UNCLAIM %pM on vid %d\n", mac,
BATADV_PRINT_VID(vid));
@@ -323,7 +323,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
/* announcement frame
* set HW SRC to the special mac containg the crc
*/
- memcpy(hw_src, mac, ETH_ALEN);
+ ether_addr_copy(hw_src, mac);
batadv_dbg(BATADV_DBG_BLA, bat_priv,
"bla_send_claim(): ANNOUNCE of %pM on vid %d\n",
ethhdr->h_source, BATADV_PRINT_VID(vid));
@@ -333,8 +333,8 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
* set HW SRC and header destination to the receiving backbone
* gws mac
*/
- memcpy(hw_src, mac, ETH_ALEN);
- memcpy(ethhdr->h_dest, mac, ETH_ALEN);
+ ether_addr_copy(hw_src, mac);
+ ether_addr_copy(ethhdr->h_dest, mac);
batadv_dbg(BATADV_DBG_BLA, bat_priv,
"bla_send_claim(): REQUEST of %pM to %pM on vid %d\n",
ethhdr->h_source, ethhdr->h_dest,
@@ -395,7 +395,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
entry->bat_priv = bat_priv;
atomic_set(&entry->request_sent, 0);
atomic_set(&entry->wait_periods, 0);
- memcpy(entry->orig, orig, ETH_ALEN);
+ ether_addr_copy(entry->orig, orig);
/* one for the hash, one for returning */
atomic_set(&entry->refcount, 2);
@@ -563,7 +563,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
struct batadv_bla_claim search_claim;
int hash_added;
- memcpy(search_claim.addr, mac, ETH_ALEN);
+ ether_addr_copy(search_claim.addr, mac);
search_claim.vid = vid;
claim = batadv_claim_hash_find(bat_priv, &search_claim);
@@ -573,7 +573,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
if (!claim)
return;
- memcpy(claim->addr, mac, ETH_ALEN);
+ ether_addr_copy(claim->addr, mac);
claim->vid = vid;
claim->lasttime = jiffies;
claim->backbone_gw = backbone_gw;
@@ -624,7 +624,7 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
{
struct batadv_bla_claim search_claim, *claim;
- memcpy(search_claim.addr, mac, ETH_ALEN);
+ ether_addr_copy(search_claim.addr, mac);
search_claim.vid = vid;
claim = batadv_claim_hash_find(bat_priv, &search_claim);
if (!claim)
@@ -1103,8 +1103,8 @@ void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
oldif->net_dev->dev_addr))
continue;
- memcpy(backbone_gw->orig,
- primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(backbone_gw->orig,
+ primary_if->net_dev->dev_addr);
/* send an announce frame so others will ask for our
* claims and update their tables.
*/
@@ -1310,7 +1310,7 @@ int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
entry = &bat_priv->bla.bcast_duplist[curr];
entry->crc = crc;
entry->entrytime = jiffies;
- memcpy(entry->orig, bcast_packet->orig, ETH_ALEN);
+ ether_addr_copy(entry->orig, bcast_packet->orig);
bat_priv->bla.bcast_duplist_curr = curr;
out:
@@ -1458,7 +1458,7 @@ int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
if (is_multicast_ether_addr(ethhdr->h_dest) && is_bcast)
goto handled;
- memcpy(search_claim.addr, ethhdr->h_source, ETH_ALEN);
+ ether_addr_copy(search_claim.addr, ethhdr->h_source);
search_claim.vid = vid;
claim = batadv_claim_hash_find(bat_priv, &search_claim);
@@ -1557,7 +1557,7 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
if (is_multicast_ether_addr(ethhdr->h_dest))
goto handled;
- memcpy(search_claim.addr, ethhdr->h_source, ETH_ALEN);
+ ether_addr_copy(search_claim.addr, ethhdr->h_source);
search_claim.vid = vid;
claim = batadv_claim_hash_find(bat_priv, &search_claim);
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 5bb37a8..b25fd64 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -277,7 +277,7 @@ static void batadv_dat_entry_add(struct batadv_priv *bat_priv, __be32 ip,
/* if this entry is already known, just update it */
if (dat_entry) {
if (!batadv_compare_eth(dat_entry->mac_addr, mac_addr))
- memcpy(dat_entry->mac_addr, mac_addr, ETH_ALEN);
+ ether_addr_copy(dat_entry->mac_addr, mac_addr);
dat_entry->last_update = jiffies;
batadv_dbg(BATADV_DBG_DAT, bat_priv,
"Entry updated: %pI4 %pM (vid: %d)\n",
@@ -292,7 +292,7 @@ static void batadv_dat_entry_add(struct batadv_priv *bat_priv, __be32 ip,
dat_entry->ip = ip;
dat_entry->vid = vid;
- memcpy(dat_entry->mac_addr, mac_addr, ETH_ALEN);
+ ether_addr_copy(dat_entry->mac_addr, mac_addr);
dat_entry->last_update = jiffies;
atomic_set(&dat_entry->refcount, 2);
diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c
index 88df9b1..bcc4bea 100644
--- a/net/batman-adv/fragmentation.c
+++ b/net/batman-adv/fragmentation.c
@@ -449,8 +449,8 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
frag_header.reserved = 0;
frag_header.no = 0;
frag_header.total_size = htons(skb->len);
- memcpy(frag_header.orig, primary_if->net_dev->dev_addr, ETH_ALEN);
- memcpy(frag_header.dest, orig_node->orig, ETH_ALEN);
+ ether_addr_copy(frag_header.orig, primary_if->net_dev->dev_addr);
+ ether_addr_copy(frag_header.dest, orig_node->orig);
/* Eat and send fragments from the tail of skb */
while (skb->len > max_fragment_size) {
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index 07c7f21..c835e13 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -763,7 +763,7 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
if (*p != ETH_ALEN)
return BATADV_DHCP_NO;
- memcpy(chaddr, skb->data + chaddr_offset, ETH_ALEN);
+ ether_addr_copy(chaddr, skb->data + chaddr_offset);
}
return ret;
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index abb9d6e..161ef8f 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -158,6 +158,7 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
struct batadv_orig_node *orig_node = NULL;
struct batadv_neigh_node *neigh_node = NULL;
size_t packet_len = sizeof(struct batadv_icmp_packet);
+ uint8_t *addr;
if (len < sizeof(struct batadv_icmp_header)) {
batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
@@ -227,10 +228,10 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
goto dst_unreach;
icmp_packet_rr = (struct batadv_icmp_packet_rr *)icmp_header;
- if (packet_len == sizeof(*icmp_packet_rr))
- memcpy(icmp_packet_rr->rr,
- neigh_node->if_incoming->net_dev->dev_addr,
- ETH_ALEN);
+ if (packet_len == sizeof(*icmp_packet_rr)) {
+ addr = neigh_node->if_incoming->net_dev->dev_addr;
+ ether_addr_copy(icmp_packet_rr->rr[0], addr);
+ }
break;
default:
@@ -250,7 +251,7 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
goto free_skb;
}
- memcpy(icmp_header->orig, primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(icmp_header->orig, primary_if->net_dev->dev_addr);
batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
goto out;
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 66ae135..fbeaebd 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -1133,8 +1133,8 @@ void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, uint8_t *src,
unicast_tvlv_packet->reserved = 0;
unicast_tvlv_packet->tvlv_len = htons(tvlv_len);
unicast_tvlv_packet->align = 0;
- memcpy(unicast_tvlv_packet->src, src, ETH_ALEN);
- memcpy(unicast_tvlv_packet->dst, dst, ETH_ALEN);
+ ether_addr_copy(unicast_tvlv_packet->src, src);
+ ether_addr_copy(unicast_tvlv_packet->dst, dst);
tvlv_buff = (unsigned char *)(unicast_tvlv_packet + 1);
tvlv_hdr = (struct batadv_tvlv_hdr *)tvlv_buff;
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 801ece6..a9546fe 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -819,7 +819,7 @@ static struct batadv_nc_node
/* Initialize nc_node */
INIT_LIST_HEAD(&nc_node->list);
- memcpy(nc_node->addr, orig_node->orig, ETH_ALEN);
+ ether_addr_copy(nc_node->addr, orig_node->orig);
nc_node->orig_node = orig_neigh_node;
atomic_set(&nc_node->refcount, 2);
@@ -941,8 +941,8 @@ static struct batadv_nc_path *batadv_nc_get_path(struct batadv_priv *bat_priv,
spin_lock_init(&nc_path->packet_list_lock);
atomic_set(&nc_path->refcount, 2);
nc_path->last_valid = jiffies;
- memcpy(nc_path->next_hop, dst, ETH_ALEN);
- memcpy(nc_path->prev_hop, src, ETH_ALEN);
+ ether_addr_copy(nc_path->next_hop, dst);
+ ether_addr_copy(nc_path->prev_hop, src);
batadv_dbg(BATADV_DBG_NC, bat_priv, "Adding nc_path %pM -> %pM\n",
nc_path->prev_hop,
@@ -1114,15 +1114,15 @@ static bool batadv_nc_code_packets(struct batadv_priv *bat_priv,
coded_packet->ttl = packet1->ttl;
/* Info about first unicast packet */
- memcpy(coded_packet->first_source, first_source, ETH_ALEN);
- memcpy(coded_packet->first_orig_dest, packet1->dest, ETH_ALEN);
+ ether_addr_copy(coded_packet->first_source, first_source);
+ ether_addr_copy(coded_packet->first_orig_dest, packet1->dest);
coded_packet->first_crc = packet_id1;
coded_packet->first_ttvn = packet1->ttvn;
/* Info about second unicast packet */
- memcpy(coded_packet->second_dest, second_dest, ETH_ALEN);
- memcpy(coded_packet->second_source, second_source, ETH_ALEN);
- memcpy(coded_packet->second_orig_dest, packet2->dest, ETH_ALEN);
+ ether_addr_copy(coded_packet->second_dest, second_dest);
+ ether_addr_copy(coded_packet->second_source, second_source);
+ ether_addr_copy(coded_packet->second_orig_dest, packet2->dest);
coded_packet->second_crc = packet_id2;
coded_packet->second_ttl = packet2->ttl;
coded_packet->second_ttvn = packet2->ttvn;
@@ -1349,8 +1349,8 @@ static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv,
/* Set the mac header as if we actually sent the packet uncoded */
ethhdr = eth_hdr(skb);
- memcpy(ethhdr->h_source, ethhdr->h_dest, ETH_ALEN);
- memcpy(ethhdr->h_dest, eth_dst_new, ETH_ALEN);
+ ether_addr_copy(ethhdr->h_source, ethhdr->h_dest);
+ ether_addr_copy(ethhdr->h_dest, eth_dst_new);
/* Set data pointer to MAC header to mimic packets from our tx path */
skb_push(skb, ETH_HLEN);
@@ -1646,7 +1646,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
* so the Ethernet address must be copied to h_dest and
* pkt_type changed from PACKET_OTHERHOST to PACKET_HOST
*/
- memcpy(ethhdr->h_dest, coded_packet_tmp.second_dest, ETH_ALEN);
+ ether_addr_copy(ethhdr->h_dest, coded_packet_tmp.second_dest);
skb->pkt_type = PACKET_HOST;
orig_dest = coded_packet_tmp.second_orig_dest;
@@ -1682,7 +1682,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
unicast_packet->packet_type = BATADV_UNICAST;
unicast_packet->version = BATADV_COMPAT_VERSION;
unicast_packet->ttl = ttl;
- memcpy(unicast_packet->dest, orig_dest, ETH_ALEN);
+ ether_addr_copy(unicast_packet->dest, orig_dest);
unicast_packet->ttvn = ttvn;
batadv_nc_packet_free(nc_packet);
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 8539416..9f2da37 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -446,7 +446,7 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
INIT_HLIST_HEAD(&neigh_node->ifinfo_list);
spin_lock_init(&neigh_node->ifinfo_lock);
- memcpy(neigh_node->addr, neigh_addr, ETH_ALEN);
+ ether_addr_copy(neigh_node->addr, neigh_addr);
neigh_node->if_incoming = hard_iface;
neigh_node->orig_node = orig_node;
@@ -666,7 +666,7 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
orig_node->tt_initialised = false;
orig_node->bat_priv = bat_priv;
- memcpy(orig_node->orig, addr, ETH_ALEN);
+ ether_addr_copy(orig_node->orig, addr);
batadv_dat_init_orig_node_addr(orig_node);
atomic_set(&orig_node->last_ttvn, 0);
orig_node->tt_buff = NULL;
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index a953d5b..3514153 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -222,8 +222,8 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv *bat_priv,
icmph = (struct batadv_icmp_header *)skb->data;
- memcpy(icmph->dst, icmph->orig, ETH_ALEN);
- memcpy(icmph->orig, primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(icmph->dst, icmph->orig);
+ ether_addr_copy(icmph->orig, primary_if->net_dev->dev_addr);
icmph->msg_type = BATADV_ECHO_REPLY;
icmph->ttl = BATADV_TTL;
@@ -276,9 +276,8 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv *bat_priv,
icmp_packet = (struct batadv_icmp_packet *)skb->data;
- memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN);
- memcpy(icmp_packet->orig, primary_if->net_dev->dev_addr,
- ETH_ALEN);
+ ether_addr_copy(icmp_packet->dst, icmp_packet->orig);
+ ether_addr_copy(icmp_packet->orig, primary_if->net_dev->dev_addr);
icmp_packet->msg_type = BATADV_TTL_EXCEEDED;
icmp_packet->ttl = BATADV_TTL;
@@ -341,8 +340,8 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
if (icmp_packet_rr->rr_cur >= BATADV_RR_LEN)
goto out;
- memcpy(&(icmp_packet_rr->rr[icmp_packet_rr->rr_cur]),
- ethhdr->h_dest, ETH_ALEN);
+ ether_addr_copy(icmp_packet_rr->rr[icmp_packet_rr->rr_cur],
+ ethhdr->h_dest);
icmp_packet_rr->rr_cur++;
}
@@ -664,7 +663,7 @@ batadv_reroute_unicast_packet(struct batadv_priv *bat_priv,
}
/* update the packet header */
- memcpy(unicast_packet->dest, orig_addr, ETH_ALEN);
+ ether_addr_copy(unicast_packet->dest, orig_addr);
unicast_packet->ttvn = orig_ttvn;
ret = true;
@@ -774,7 +773,7 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
if (!primary_if)
return 0;
- memcpy(unicast_packet->dest, primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(unicast_packet->dest, primary_if->net_dev->dev_addr);
batadv_hardif_free_ref(primary_if);
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 1703a2e..0e4831f 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -59,8 +59,8 @@ int batadv_send_skb_packet(struct sk_buff *skb,
skb_reset_mac_header(skb);
ethhdr = eth_hdr(skb);
- memcpy(ethhdr->h_source, hard_iface->net_dev->dev_addr, ETH_ALEN);
- memcpy(ethhdr->h_dest, dst_addr, ETH_ALEN);
+ ether_addr_copy(ethhdr->h_source, hard_iface->net_dev->dev_addr);
+ ether_addr_copy(ethhdr->h_dest, dst_addr);
ethhdr->h_proto = htons(ETH_P_BATMAN);
skb_set_network_header(skb, ETH_HLEN);
@@ -165,7 +165,7 @@ batadv_send_skb_push_fill_unicast(struct sk_buff *skb, int hdr_size,
/* set unicast ttl */
unicast_packet->ttl = BATADV_TTL;
/* copy the destination for faster routing */
- memcpy(unicast_packet->dest, orig_node->orig, ETH_ALEN);
+ ether_addr_copy(unicast_packet->dest, orig_node->orig);
/* set the destination tt version number */
unicast_packet->ttvn = ttvn;
@@ -220,7 +220,7 @@ bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
uc_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;
uc_4addr_packet->u.packet_type = BATADV_UNICAST_4ADDR;
- memcpy(uc_4addr_packet->src, primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(uc_4addr_packet->src, primary_if->net_dev->dev_addr);
uc_4addr_packet->subtype = packet_subtype;
uc_4addr_packet->reserved = 0;
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index c4392fc..db3e467 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -111,8 +111,8 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
- memcpy(old_addr, dev->dev_addr, ETH_ALEN);
- memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+ ether_addr_copy(old_addr, dev->dev_addr);
+ ether_addr_copy(dev->dev_addr, addr->sa_data);
/* only modify transtable if it has been initialized before */
if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) {
@@ -279,8 +279,8 @@ send:
/* hw address of first interface is the orig mac because only
* this mac is known throughout the mesh
*/
- memcpy(bcast_packet->orig,
- primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(bcast_packet->orig,
+ primary_if->net_dev->dev_addr);
/* set broadcast sequence number */
seqno = atomic_inc_return(&bat_priv->bcast_seqno);
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 959dde7..6d0da58 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -96,7 +96,7 @@ batadv_tt_hash_find(struct batadv_hashtable *hash, const uint8_t *addr,
if (!hash)
return NULL;
- memcpy(to_search.addr, addr, ETH_ALEN);
+ ether_addr_copy(to_search.addr, addr);
to_search.vid = vid;
index = batadv_choose_tt(&to_search, hash->size);
@@ -333,7 +333,7 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv,
tt_change_node->change.flags = flags;
memset(tt_change_node->change.reserved, 0,
sizeof(tt_change_node->change.reserved));
- memcpy(tt_change_node->change.addr, common->addr, ETH_ALEN);
+ ether_addr_copy(tt_change_node->change.addr, common->addr);
tt_change_node->change.vid = htons(common->vid);
del_op_requested = flags & BATADV_TT_CLIENT_DEL;
@@ -549,7 +549,7 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
addr, BATADV_PRINT_VID(vid),
(uint8_t)atomic_read(&bat_priv->tt.vn));
- memcpy(tt_local->common.addr, addr, ETH_ALEN);
+ ether_addr_copy(tt_local->common.addr, addr);
/* The local entry has to be marked as NEW to avoid to send it in
* a full table response going out before the next ttvn increment
* (consistency check)
@@ -1277,7 +1277,7 @@ static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
goto out;
common = &tt_global_entry->common;
- memcpy(common->addr, tt_addr, ETH_ALEN);
+ ether_addr_copy(common->addr, tt_addr);
common->vid = vid;
common->flags = flags;
@@ -2160,7 +2160,7 @@ batadv_new_tt_req_node(struct batadv_priv *bat_priv,
if (!tt_req_node)
goto unlock;
- memcpy(tt_req_node->addr, orig_node->orig, ETH_ALEN);
+ ether_addr_copy(tt_req_node->addr, orig_node->orig);
tt_req_node->issued_at = jiffies;
list_add(&tt_req_node->list, &bat_priv->tt.req_list);
@@ -2240,8 +2240,7 @@ static void batadv_tt_tvlv_generate(struct batadv_priv *bat_priv,
if ((valid_cb) && (!valid_cb(tt_common_entry, cb_data)))
continue;
- memcpy(tt_change->addr, tt_common_entry->addr,
- ETH_ALEN);
+ ether_addr_copy(tt_change->addr, tt_common_entry->addr);
tt_change->flags = tt_common_entry->flags;
tt_change->vid = htons(tt_common_entry->vid);
memset(tt_change->reserved, 0,
@@ -2932,7 +2931,7 @@ static bool batadv_tt_check_roam_count(struct batadv_priv *bat_priv,
tt_roam_node->first_time = jiffies;
atomic_set(&tt_roam_node->counter,
BATADV_ROAMING_MAX_COUNT - 1);
- memcpy(tt_roam_node->addr, client, ETH_ALEN);
+ ether_addr_copy(tt_roam_node->addr, client);
list_add(&tt_roam_node->list, &bat_priv->tt.roam_list);
ret = true;
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread* [B.A.T.M.A.N.] [PATCH 04/16] batman-adv: prefer ether_addr_copy to memcpy
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
On some architectures ether_addr_copy() is slightly faster
than memcpy() therefore use the former when possible.
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
---
net/batman-adv/bat_iv_ogm.c | 10 +++++-----
net/batman-adv/bridge_loop_avoidance.c | 30 +++++++++++++++---------------
net/batman-adv/distributed-arp-table.c | 4 ++--
net/batman-adv/fragmentation.c | 4 ++--
net/batman-adv/gateway_client.c | 2 +-
net/batman-adv/icmp_socket.c | 11 ++++++-----
net/batman-adv/main.c | 4 ++--
net/batman-adv/network-coding.c | 24 ++++++++++++------------
net/batman-adv/originator.c | 4 ++--
net/batman-adv/routing.c | 17 ++++++++---------
net/batman-adv/send.c | 8 ++++----
net/batman-adv/soft-interface.c | 8 ++++----
net/batman-adv/translation-table.c | 15 +++++++--------
13 files changed, 70 insertions(+), 71 deletions(-)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 8323bce..b3bd4ec 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -347,10 +347,10 @@ static void batadv_iv_ogm_iface_update_mac(struct batadv_hard_iface *hard_iface)
unsigned char *ogm_buff = hard_iface->bat_iv.ogm_buff;
batadv_ogm_packet = (struct batadv_ogm_packet *)ogm_buff;
- memcpy(batadv_ogm_packet->orig,
- hard_iface->net_dev->dev_addr, ETH_ALEN);
- memcpy(batadv_ogm_packet->prev_sender,
- hard_iface->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(batadv_ogm_packet->orig,
+ hard_iface->net_dev->dev_addr);
+ ether_addr_copy(batadv_ogm_packet->prev_sender,
+ hard_iface->net_dev->dev_addr);
}
static void
@@ -830,7 +830,7 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node,
tvlv_len = ntohs(batadv_ogm_packet->tvlv_len);
batadv_ogm_packet->ttl--;
- memcpy(batadv_ogm_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
+ ether_addr_copy(batadv_ogm_packet->prev_sender, ethhdr->h_source);
/* apply hop penalty */
batadv_ogm_packet->tq = batadv_hop_penalty(batadv_ogm_packet->tq,
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 70d781a..6f0d9ec 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -191,7 +191,7 @@ batadv_backbone_hash_find(struct batadv_priv *bat_priv,
if (!hash)
return NULL;
- memcpy(search_entry.orig, addr, ETH_ALEN);
+ ether_addr_copy(search_entry.orig, addr);
search_entry.vid = vid;
index = batadv_choose_backbone_gw(&search_entry, hash->size);
@@ -305,7 +305,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
/* normal claim frame
* set Ethernet SRC to the clients mac
*/
- memcpy(ethhdr->h_source, mac, ETH_ALEN);
+ ether_addr_copy(ethhdr->h_source, mac);
batadv_dbg(BATADV_DBG_BLA, bat_priv,
"bla_send_claim(): CLAIM %pM on vid %d\n", mac,
BATADV_PRINT_VID(vid));
@@ -314,7 +314,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
/* unclaim frame
* set HW SRC to the clients mac
*/
- memcpy(hw_src, mac, ETH_ALEN);
+ ether_addr_copy(hw_src, mac);
batadv_dbg(BATADV_DBG_BLA, bat_priv,
"bla_send_claim(): UNCLAIM %pM on vid %d\n", mac,
BATADV_PRINT_VID(vid));
@@ -323,7 +323,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
/* announcement frame
* set HW SRC to the special mac containg the crc
*/
- memcpy(hw_src, mac, ETH_ALEN);
+ ether_addr_copy(hw_src, mac);
batadv_dbg(BATADV_DBG_BLA, bat_priv,
"bla_send_claim(): ANNOUNCE of %pM on vid %d\n",
ethhdr->h_source, BATADV_PRINT_VID(vid));
@@ -333,8 +333,8 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
* set HW SRC and header destination to the receiving backbone
* gws mac
*/
- memcpy(hw_src, mac, ETH_ALEN);
- memcpy(ethhdr->h_dest, mac, ETH_ALEN);
+ ether_addr_copy(hw_src, mac);
+ ether_addr_copy(ethhdr->h_dest, mac);
batadv_dbg(BATADV_DBG_BLA, bat_priv,
"bla_send_claim(): REQUEST of %pM to %pM on vid %d\n",
ethhdr->h_source, ethhdr->h_dest,
@@ -395,7 +395,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
entry->bat_priv = bat_priv;
atomic_set(&entry->request_sent, 0);
atomic_set(&entry->wait_periods, 0);
- memcpy(entry->orig, orig, ETH_ALEN);
+ ether_addr_copy(entry->orig, orig);
/* one for the hash, one for returning */
atomic_set(&entry->refcount, 2);
@@ -563,7 +563,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
struct batadv_bla_claim search_claim;
int hash_added;
- memcpy(search_claim.addr, mac, ETH_ALEN);
+ ether_addr_copy(search_claim.addr, mac);
search_claim.vid = vid;
claim = batadv_claim_hash_find(bat_priv, &search_claim);
@@ -573,7 +573,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
if (!claim)
return;
- memcpy(claim->addr, mac, ETH_ALEN);
+ ether_addr_copy(claim->addr, mac);
claim->vid = vid;
claim->lasttime = jiffies;
claim->backbone_gw = backbone_gw;
@@ -624,7 +624,7 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
{
struct batadv_bla_claim search_claim, *claim;
- memcpy(search_claim.addr, mac, ETH_ALEN);
+ ether_addr_copy(search_claim.addr, mac);
search_claim.vid = vid;
claim = batadv_claim_hash_find(bat_priv, &search_claim);
if (!claim)
@@ -1103,8 +1103,8 @@ void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
oldif->net_dev->dev_addr))
continue;
- memcpy(backbone_gw->orig,
- primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(backbone_gw->orig,
+ primary_if->net_dev->dev_addr);
/* send an announce frame so others will ask for our
* claims and update their tables.
*/
@@ -1310,7 +1310,7 @@ int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
entry = &bat_priv->bla.bcast_duplist[curr];
entry->crc = crc;
entry->entrytime = jiffies;
- memcpy(entry->orig, bcast_packet->orig, ETH_ALEN);
+ ether_addr_copy(entry->orig, bcast_packet->orig);
bat_priv->bla.bcast_duplist_curr = curr;
out:
@@ -1458,7 +1458,7 @@ int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
if (is_multicast_ether_addr(ethhdr->h_dest) && is_bcast)
goto handled;
- memcpy(search_claim.addr, ethhdr->h_source, ETH_ALEN);
+ ether_addr_copy(search_claim.addr, ethhdr->h_source);
search_claim.vid = vid;
claim = batadv_claim_hash_find(bat_priv, &search_claim);
@@ -1557,7 +1557,7 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
if (is_multicast_ether_addr(ethhdr->h_dest))
goto handled;
- memcpy(search_claim.addr, ethhdr->h_source, ETH_ALEN);
+ ether_addr_copy(search_claim.addr, ethhdr->h_source);
search_claim.vid = vid;
claim = batadv_claim_hash_find(bat_priv, &search_claim);
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 5bb37a8..b25fd64 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -277,7 +277,7 @@ static void batadv_dat_entry_add(struct batadv_priv *bat_priv, __be32 ip,
/* if this entry is already known, just update it */
if (dat_entry) {
if (!batadv_compare_eth(dat_entry->mac_addr, mac_addr))
- memcpy(dat_entry->mac_addr, mac_addr, ETH_ALEN);
+ ether_addr_copy(dat_entry->mac_addr, mac_addr);
dat_entry->last_update = jiffies;
batadv_dbg(BATADV_DBG_DAT, bat_priv,
"Entry updated: %pI4 %pM (vid: %d)\n",
@@ -292,7 +292,7 @@ static void batadv_dat_entry_add(struct batadv_priv *bat_priv, __be32 ip,
dat_entry->ip = ip;
dat_entry->vid = vid;
- memcpy(dat_entry->mac_addr, mac_addr, ETH_ALEN);
+ ether_addr_copy(dat_entry->mac_addr, mac_addr);
dat_entry->last_update = jiffies;
atomic_set(&dat_entry->refcount, 2);
diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c
index 88df9b1..bcc4bea 100644
--- a/net/batman-adv/fragmentation.c
+++ b/net/batman-adv/fragmentation.c
@@ -449,8 +449,8 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
frag_header.reserved = 0;
frag_header.no = 0;
frag_header.total_size = htons(skb->len);
- memcpy(frag_header.orig, primary_if->net_dev->dev_addr, ETH_ALEN);
- memcpy(frag_header.dest, orig_node->orig, ETH_ALEN);
+ ether_addr_copy(frag_header.orig, primary_if->net_dev->dev_addr);
+ ether_addr_copy(frag_header.dest, orig_node->orig);
/* Eat and send fragments from the tail of skb */
while (skb->len > max_fragment_size) {
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index 07c7f21..c835e13 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -763,7 +763,7 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
if (*p != ETH_ALEN)
return BATADV_DHCP_NO;
- memcpy(chaddr, skb->data + chaddr_offset, ETH_ALEN);
+ ether_addr_copy(chaddr, skb->data + chaddr_offset);
}
return ret;
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index abb9d6e..161ef8f 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -158,6 +158,7 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
struct batadv_orig_node *orig_node = NULL;
struct batadv_neigh_node *neigh_node = NULL;
size_t packet_len = sizeof(struct batadv_icmp_packet);
+ uint8_t *addr;
if (len < sizeof(struct batadv_icmp_header)) {
batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
@@ -227,10 +228,10 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
goto dst_unreach;
icmp_packet_rr = (struct batadv_icmp_packet_rr *)icmp_header;
- if (packet_len == sizeof(*icmp_packet_rr))
- memcpy(icmp_packet_rr->rr,
- neigh_node->if_incoming->net_dev->dev_addr,
- ETH_ALEN);
+ if (packet_len == sizeof(*icmp_packet_rr)) {
+ addr = neigh_node->if_incoming->net_dev->dev_addr;
+ ether_addr_copy(icmp_packet_rr->rr[0], addr);
+ }
break;
default:
@@ -250,7 +251,7 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
goto free_skb;
}
- memcpy(icmp_header->orig, primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(icmp_header->orig, primary_if->net_dev->dev_addr);
batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
goto out;
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 66ae135..fbeaebd 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -1133,8 +1133,8 @@ void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, uint8_t *src,
unicast_tvlv_packet->reserved = 0;
unicast_tvlv_packet->tvlv_len = htons(tvlv_len);
unicast_tvlv_packet->align = 0;
- memcpy(unicast_tvlv_packet->src, src, ETH_ALEN);
- memcpy(unicast_tvlv_packet->dst, dst, ETH_ALEN);
+ ether_addr_copy(unicast_tvlv_packet->src, src);
+ ether_addr_copy(unicast_tvlv_packet->dst, dst);
tvlv_buff = (unsigned char *)(unicast_tvlv_packet + 1);
tvlv_hdr = (struct batadv_tvlv_hdr *)tvlv_buff;
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 801ece6..a9546fe 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -819,7 +819,7 @@ static struct batadv_nc_node
/* Initialize nc_node */
INIT_LIST_HEAD(&nc_node->list);
- memcpy(nc_node->addr, orig_node->orig, ETH_ALEN);
+ ether_addr_copy(nc_node->addr, orig_node->orig);
nc_node->orig_node = orig_neigh_node;
atomic_set(&nc_node->refcount, 2);
@@ -941,8 +941,8 @@ static struct batadv_nc_path *batadv_nc_get_path(struct batadv_priv *bat_priv,
spin_lock_init(&nc_path->packet_list_lock);
atomic_set(&nc_path->refcount, 2);
nc_path->last_valid = jiffies;
- memcpy(nc_path->next_hop, dst, ETH_ALEN);
- memcpy(nc_path->prev_hop, src, ETH_ALEN);
+ ether_addr_copy(nc_path->next_hop, dst);
+ ether_addr_copy(nc_path->prev_hop, src);
batadv_dbg(BATADV_DBG_NC, bat_priv, "Adding nc_path %pM -> %pM\n",
nc_path->prev_hop,
@@ -1114,15 +1114,15 @@ static bool batadv_nc_code_packets(struct batadv_priv *bat_priv,
coded_packet->ttl = packet1->ttl;
/* Info about first unicast packet */
- memcpy(coded_packet->first_source, first_source, ETH_ALEN);
- memcpy(coded_packet->first_orig_dest, packet1->dest, ETH_ALEN);
+ ether_addr_copy(coded_packet->first_source, first_source);
+ ether_addr_copy(coded_packet->first_orig_dest, packet1->dest);
coded_packet->first_crc = packet_id1;
coded_packet->first_ttvn = packet1->ttvn;
/* Info about second unicast packet */
- memcpy(coded_packet->second_dest, second_dest, ETH_ALEN);
- memcpy(coded_packet->second_source, second_source, ETH_ALEN);
- memcpy(coded_packet->second_orig_dest, packet2->dest, ETH_ALEN);
+ ether_addr_copy(coded_packet->second_dest, second_dest);
+ ether_addr_copy(coded_packet->second_source, second_source);
+ ether_addr_copy(coded_packet->second_orig_dest, packet2->dest);
coded_packet->second_crc = packet_id2;
coded_packet->second_ttl = packet2->ttl;
coded_packet->second_ttvn = packet2->ttvn;
@@ -1349,8 +1349,8 @@ static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv,
/* Set the mac header as if we actually sent the packet uncoded */
ethhdr = eth_hdr(skb);
- memcpy(ethhdr->h_source, ethhdr->h_dest, ETH_ALEN);
- memcpy(ethhdr->h_dest, eth_dst_new, ETH_ALEN);
+ ether_addr_copy(ethhdr->h_source, ethhdr->h_dest);
+ ether_addr_copy(ethhdr->h_dest, eth_dst_new);
/* Set data pointer to MAC header to mimic packets from our tx path */
skb_push(skb, ETH_HLEN);
@@ -1646,7 +1646,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
* so the Ethernet address must be copied to h_dest and
* pkt_type changed from PACKET_OTHERHOST to PACKET_HOST
*/
- memcpy(ethhdr->h_dest, coded_packet_tmp.second_dest, ETH_ALEN);
+ ether_addr_copy(ethhdr->h_dest, coded_packet_tmp.second_dest);
skb->pkt_type = PACKET_HOST;
orig_dest = coded_packet_tmp.second_orig_dest;
@@ -1682,7 +1682,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
unicast_packet->packet_type = BATADV_UNICAST;
unicast_packet->version = BATADV_COMPAT_VERSION;
unicast_packet->ttl = ttl;
- memcpy(unicast_packet->dest, orig_dest, ETH_ALEN);
+ ether_addr_copy(unicast_packet->dest, orig_dest);
unicast_packet->ttvn = ttvn;
batadv_nc_packet_free(nc_packet);
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 8539416..9f2da37 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -446,7 +446,7 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
INIT_HLIST_HEAD(&neigh_node->ifinfo_list);
spin_lock_init(&neigh_node->ifinfo_lock);
- memcpy(neigh_node->addr, neigh_addr, ETH_ALEN);
+ ether_addr_copy(neigh_node->addr, neigh_addr);
neigh_node->if_incoming = hard_iface;
neigh_node->orig_node = orig_node;
@@ -666,7 +666,7 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
orig_node->tt_initialised = false;
orig_node->bat_priv = bat_priv;
- memcpy(orig_node->orig, addr, ETH_ALEN);
+ ether_addr_copy(orig_node->orig, addr);
batadv_dat_init_orig_node_addr(orig_node);
atomic_set(&orig_node->last_ttvn, 0);
orig_node->tt_buff = NULL;
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index a953d5b..3514153 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -222,8 +222,8 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv *bat_priv,
icmph = (struct batadv_icmp_header *)skb->data;
- memcpy(icmph->dst, icmph->orig, ETH_ALEN);
- memcpy(icmph->orig, primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(icmph->dst, icmph->orig);
+ ether_addr_copy(icmph->orig, primary_if->net_dev->dev_addr);
icmph->msg_type = BATADV_ECHO_REPLY;
icmph->ttl = BATADV_TTL;
@@ -276,9 +276,8 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv *bat_priv,
icmp_packet = (struct batadv_icmp_packet *)skb->data;
- memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN);
- memcpy(icmp_packet->orig, primary_if->net_dev->dev_addr,
- ETH_ALEN);
+ ether_addr_copy(icmp_packet->dst, icmp_packet->orig);
+ ether_addr_copy(icmp_packet->orig, primary_if->net_dev->dev_addr);
icmp_packet->msg_type = BATADV_TTL_EXCEEDED;
icmp_packet->ttl = BATADV_TTL;
@@ -341,8 +340,8 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
if (icmp_packet_rr->rr_cur >= BATADV_RR_LEN)
goto out;
- memcpy(&(icmp_packet_rr->rr[icmp_packet_rr->rr_cur]),
- ethhdr->h_dest, ETH_ALEN);
+ ether_addr_copy(icmp_packet_rr->rr[icmp_packet_rr->rr_cur],
+ ethhdr->h_dest);
icmp_packet_rr->rr_cur++;
}
@@ -664,7 +663,7 @@ batadv_reroute_unicast_packet(struct batadv_priv *bat_priv,
}
/* update the packet header */
- memcpy(unicast_packet->dest, orig_addr, ETH_ALEN);
+ ether_addr_copy(unicast_packet->dest, orig_addr);
unicast_packet->ttvn = orig_ttvn;
ret = true;
@@ -774,7 +773,7 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
if (!primary_if)
return 0;
- memcpy(unicast_packet->dest, primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(unicast_packet->dest, primary_if->net_dev->dev_addr);
batadv_hardif_free_ref(primary_if);
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 1703a2e..0e4831f 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -59,8 +59,8 @@ int batadv_send_skb_packet(struct sk_buff *skb,
skb_reset_mac_header(skb);
ethhdr = eth_hdr(skb);
- memcpy(ethhdr->h_source, hard_iface->net_dev->dev_addr, ETH_ALEN);
- memcpy(ethhdr->h_dest, dst_addr, ETH_ALEN);
+ ether_addr_copy(ethhdr->h_source, hard_iface->net_dev->dev_addr);
+ ether_addr_copy(ethhdr->h_dest, dst_addr);
ethhdr->h_proto = htons(ETH_P_BATMAN);
skb_set_network_header(skb, ETH_HLEN);
@@ -165,7 +165,7 @@ batadv_send_skb_push_fill_unicast(struct sk_buff *skb, int hdr_size,
/* set unicast ttl */
unicast_packet->ttl = BATADV_TTL;
/* copy the destination for faster routing */
- memcpy(unicast_packet->dest, orig_node->orig, ETH_ALEN);
+ ether_addr_copy(unicast_packet->dest, orig_node->orig);
/* set the destination tt version number */
unicast_packet->ttvn = ttvn;
@@ -220,7 +220,7 @@ bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
uc_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;
uc_4addr_packet->u.packet_type = BATADV_UNICAST_4ADDR;
- memcpy(uc_4addr_packet->src, primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(uc_4addr_packet->src, primary_if->net_dev->dev_addr);
uc_4addr_packet->subtype = packet_subtype;
uc_4addr_packet->reserved = 0;
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index c4392fc..db3e467 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -111,8 +111,8 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
- memcpy(old_addr, dev->dev_addr, ETH_ALEN);
- memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+ ether_addr_copy(old_addr, dev->dev_addr);
+ ether_addr_copy(dev->dev_addr, addr->sa_data);
/* only modify transtable if it has been initialized before */
if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) {
@@ -279,8 +279,8 @@ send:
/* hw address of first interface is the orig mac because only
* this mac is known throughout the mesh
*/
- memcpy(bcast_packet->orig,
- primary_if->net_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(bcast_packet->orig,
+ primary_if->net_dev->dev_addr);
/* set broadcast sequence number */
seqno = atomic_inc_return(&bat_priv->bcast_seqno);
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 959dde7..6d0da58 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -96,7 +96,7 @@ batadv_tt_hash_find(struct batadv_hashtable *hash, const uint8_t *addr,
if (!hash)
return NULL;
- memcpy(to_search.addr, addr, ETH_ALEN);
+ ether_addr_copy(to_search.addr, addr);
to_search.vid = vid;
index = batadv_choose_tt(&to_search, hash->size);
@@ -333,7 +333,7 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv,
tt_change_node->change.flags = flags;
memset(tt_change_node->change.reserved, 0,
sizeof(tt_change_node->change.reserved));
- memcpy(tt_change_node->change.addr, common->addr, ETH_ALEN);
+ ether_addr_copy(tt_change_node->change.addr, common->addr);
tt_change_node->change.vid = htons(common->vid);
del_op_requested = flags & BATADV_TT_CLIENT_DEL;
@@ -549,7 +549,7 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
addr, BATADV_PRINT_VID(vid),
(uint8_t)atomic_read(&bat_priv->tt.vn));
- memcpy(tt_local->common.addr, addr, ETH_ALEN);
+ ether_addr_copy(tt_local->common.addr, addr);
/* The local entry has to be marked as NEW to avoid to send it in
* a full table response going out before the next ttvn increment
* (consistency check)
@@ -1277,7 +1277,7 @@ static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
goto out;
common = &tt_global_entry->common;
- memcpy(common->addr, tt_addr, ETH_ALEN);
+ ether_addr_copy(common->addr, tt_addr);
common->vid = vid;
common->flags = flags;
@@ -2160,7 +2160,7 @@ batadv_new_tt_req_node(struct batadv_priv *bat_priv,
if (!tt_req_node)
goto unlock;
- memcpy(tt_req_node->addr, orig_node->orig, ETH_ALEN);
+ ether_addr_copy(tt_req_node->addr, orig_node->orig);
tt_req_node->issued_at = jiffies;
list_add(&tt_req_node->list, &bat_priv->tt.req_list);
@@ -2240,8 +2240,7 @@ static void batadv_tt_tvlv_generate(struct batadv_priv *bat_priv,
if ((valid_cb) && (!valid_cb(tt_common_entry, cb_data)))
continue;
- memcpy(tt_change->addr, tt_common_entry->addr,
- ETH_ALEN);
+ ether_addr_copy(tt_change->addr, tt_common_entry->addr);
tt_change->flags = tt_common_entry->flags;
tt_change->vid = htons(tt_common_entry->vid);
memset(tt_change->reserved, 0,
@@ -2932,7 +2931,7 @@ static bool batadv_tt_check_roam_count(struct batadv_priv *bat_priv,
tt_roam_node->first_time = jiffies;
atomic_set(&tt_roam_node->counter,
BATADV_ROAMING_MAX_COUNT - 1);
- memcpy(tt_roam_node->addr, client, ETH_ALEN);
+ ether_addr_copy(tt_roam_node->addr, client);
list_add(&tt_roam_node->list, &bat_priv->tt.roam_list);
ret = true;
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 05/16] batman-adv: fix a few kerneldoc inconsistencies
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: netdev, b.a.t.m.a.n, Simon Wunderlich, Marek Lindner, Antonio Quartulli
From: Simon Wunderlich <sw@simonwunderlich.de>
Reported-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/types.h | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 78370ab..9f52517 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -163,7 +163,7 @@ struct batadv_vlan_tt {
};
/**
- * batadv_orig_node_vlan - VLAN specific data per orig_node
+ * struct batadv_orig_node_vlan - VLAN specific data per orig_node
* @vid: the VLAN identifier
* @tt: VLAN specific TT attributes
* @list: list node for orig_node::vlan_list
@@ -334,7 +334,7 @@ struct batadv_neigh_node {
};
/**
- * struct batadv_neigh_node_bat_iv - neighbor information per outgoing
+ * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
* interface for BATMAN IV
* @tq_recv: ring buffer of received TQ values from this neigh node
* @tq_index: ring buffer index
@@ -544,7 +544,7 @@ struct batadv_priv_bla {
#endif
/**
- * struct batadv_debug_log - debug logging data
+ * struct batadv_priv_debug_log - debug logging data
* @log_buff: buffer holding the logs (ring bufer)
* @log_start: index of next character to read
* @log_end: index of next character to write
@@ -1004,8 +1004,8 @@ struct batadv_nc_packet {
};
/**
- * batadv_skb_cb - control buffer structure used to store private data relevant
- * to batman-adv in the skb->cb buffer in skbs.
+ * struct batadv_skb_cb - control buffer structure used to store private data
+ * relevant to batman-adv in the skb->cb buffer in skbs.
* @decoded: Marks a skb as decoded, which is checked when searching for coding
* opportunities in network-coding.c
*/
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread* [B.A.T.M.A.N.] [PATCH 05/16] batman-adv: fix a few kerneldoc inconsistencies
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Simon Wunderlich <sw@simonwunderlich.de>
Reported-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/types.h | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 78370ab..9f52517 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -163,7 +163,7 @@ struct batadv_vlan_tt {
};
/**
- * batadv_orig_node_vlan - VLAN specific data per orig_node
+ * struct batadv_orig_node_vlan - VLAN specific data per orig_node
* @vid: the VLAN identifier
* @tt: VLAN specific TT attributes
* @list: list node for orig_node::vlan_list
@@ -334,7 +334,7 @@ struct batadv_neigh_node {
};
/**
- * struct batadv_neigh_node_bat_iv - neighbor information per outgoing
+ * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
* interface for BATMAN IV
* @tq_recv: ring buffer of received TQ values from this neigh node
* @tq_index: ring buffer index
@@ -544,7 +544,7 @@ struct batadv_priv_bla {
#endif
/**
- * struct batadv_debug_log - debug logging data
+ * struct batadv_priv_debug_log - debug logging data
* @log_buff: buffer holding the logs (ring bufer)
* @log_start: index of next character to read
* @log_end: index of next character to write
@@ -1004,8 +1004,8 @@ struct batadv_nc_packet {
};
/**
- * batadv_skb_cb - control buffer structure used to store private data relevant
- * to batman-adv in the skb->cb buffer in skbs.
+ * struct batadv_skb_cb - control buffer structure used to store private data
+ * relevant to batman-adv in the skb->cb buffer in skbs.
* @decoded: Marks a skb as decoded, which is checked when searching for coding
* opportunities in network-coding.c
*/
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 06/16] batman-adv: call unregister_netdev() to have it handle the locking for us
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Marek Lindner <mareklindner@neomailbox.ch>
Reported-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/soft-interface.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index db3e467..633e9d6 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -652,10 +652,7 @@ static void batadv_softif_destroy_finish(struct work_struct *work)
}
batadv_sysfs_del_meshif(soft_iface);
-
- rtnl_lock();
- unregister_netdevice(soft_iface);
- rtnl_unlock();
+ unregister_netdev(soft_iface);
}
/**
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [B.A.T.M.A.N.] [PATCH 06/16] batman-adv: call unregister_netdev() to have it handle the locking for us
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Marek Lindner <mareklindner@neomailbox.ch>
Reported-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/soft-interface.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index db3e467..633e9d6 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -652,10 +652,7 @@ static void batadv_softif_destroy_finish(struct work_struct *work)
}
batadv_sysfs_del_meshif(soft_iface);
-
- rtnl_lock();
- unregister_netdevice(soft_iface);
- rtnl_unlock();
+ unregister_netdev(soft_iface);
}
/**
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 07/16] batman-adv: add kerneldoc for dst_hint argument
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Antonio Quartulli, Marek Lindner
Some helper functions used along the TX path have now a new
"dst_hint" argument but the kerneldoc was missing.
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
---
net/batman-adv/send.c | 1 +
net/batman-adv/send.h | 2 ++
2 files changed, 3 insertions(+)
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 0e4831f..ce163d5 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -311,6 +311,7 @@ out:
* @packet_type: the batman unicast packet type to use
* @packet_subtype: the unicast 4addr packet subtype (only relevant for unicast
* 4addr packets)
+ * @dst_hint: can be used to override the destination contained in the skb
* @vid: the vid to be used to search the translation table
*
* Look up the recipient node for the destination address in the ethernet
diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h
index aaddaa9..31e8781 100644
--- a/net/batman-adv/send.h
+++ b/net/batman-adv/send.h
@@ -47,6 +47,7 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
* batadv_send_skb_via_tt - send an skb via TT lookup
* @bat_priv: the bat priv with all the soft interface information
* @skb: the payload to send
+ * @dst_hint: can be used to override the destination contained in the skb
* @vid: the vid to be used to search the translation table
*
* Look up the recipient node for the destination address in the ethernet
@@ -68,6 +69,7 @@ static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
* @bat_priv: the bat priv with all the soft interface information
* @skb: the payload to send
* @packet_subtype: the unicast 4addr packet subtype to use
+ * @dst_hint: can be used to override the destination contained in the skb
* @vid: the vid to be used to search the translation table
*
* Look up the recipient node for the destination address in the ethernet
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [B.A.T.M.A.N.] [PATCH 07/16] batman-adv: add kerneldoc for dst_hint argument
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
Some helper functions used along the TX path have now a new
"dst_hint" argument but the kerneldoc was missing.
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
---
net/batman-adv/send.c | 1 +
net/batman-adv/send.h | 2 ++
2 files changed, 3 insertions(+)
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 0e4831f..ce163d5 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -311,6 +311,7 @@ out:
* @packet_type: the batman unicast packet type to use
* @packet_subtype: the unicast 4addr packet subtype (only relevant for unicast
* 4addr packets)
+ * @dst_hint: can be used to override the destination contained in the skb
* @vid: the vid to be used to search the translation table
*
* Look up the recipient node for the destination address in the ethernet
diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h
index aaddaa9..31e8781 100644
--- a/net/batman-adv/send.h
+++ b/net/batman-adv/send.h
@@ -47,6 +47,7 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
* batadv_send_skb_via_tt - send an skb via TT lookup
* @bat_priv: the bat priv with all the soft interface information
* @skb: the payload to send
+ * @dst_hint: can be used to override the destination contained in the skb
* @vid: the vid to be used to search the translation table
*
* Look up the recipient node for the destination address in the ethernet
@@ -68,6 +69,7 @@ static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
* @bat_priv: the bat priv with all the soft interface information
* @skb: the payload to send
* @packet_subtype: the unicast 4addr packet subtype to use
+ * @dst_hint: can be used to override the destination contained in the skb
* @vid: the vid to be used to search the translation table
*
* Look up the recipient node for the destination address in the ethernet
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 08/16] batman-adv: Multicast Listener Announcements via Translation Table
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: netdev, b.a.t.m.a.n, Linus Lüssing, Marek Lindner,
Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
With this patch a node which has no bridge interface on top of its soft
interface announces its local multicast listeners via the translation
table.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/Kconfig | 9 ++
net/batman-adv/Makefile | 1 +
net/batman-adv/main.c | 6 +
net/batman-adv/main.h | 1 +
net/batman-adv/multicast.c | 218 +++++++++++++++++++++++++++++++++++++
net/batman-adv/multicast.h | 41 +++++++
net/batman-adv/translation-table.c | 22 +++-
net/batman-adv/types.h | 24 ++++
8 files changed, 318 insertions(+), 4 deletions(-)
create mode 100644 net/batman-adv/multicast.c
create mode 100644 net/batman-adv/multicast.h
diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig
index fa780b7..11660a3 100644
--- a/net/batman-adv/Kconfig
+++ b/net/batman-adv/Kconfig
@@ -50,6 +50,15 @@ config BATMAN_ADV_NC
If you think that your network does not need this feature you
can safely disable it and save some space.
+config BATMAN_ADV_MCAST
+ bool "Multicast optimisation"
+ depends on BATMAN_ADV
+ default n
+ help
+ This option enables the multicast optimisation which aims to
+ reduce the air overhead while improving the reliability of
+ multicast messages.
+
config BATMAN_ADV_DEBUG
bool "B.A.T.M.A.N. debugging"
depends on BATMAN_ADV
diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile
index 42df18f..eb7d8c03 100644
--- a/net/batman-adv/Makefile
+++ b/net/batman-adv/Makefile
@@ -36,3 +36,4 @@ batman-adv-y += send.o
batman-adv-y += soft-interface.o
batman-adv-y += sysfs.o
batman-adv-y += translation-table.o
+batman-adv-$(CONFIG_BATMAN_ADV_MCAST) += multicast.o
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index fbeaebd..58e98c8 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -34,6 +34,7 @@
#include "gateway_client.h"
#include "bridge_loop_avoidance.h"
#include "distributed-arp-table.h"
+#include "multicast.h"
#include "gateway_common.h"
#include "hash.h"
#include "bat_algo.h"
@@ -120,6 +121,9 @@ int batadv_mesh_init(struct net_device *soft_iface)
INIT_LIST_HEAD(&bat_priv->tt.changes_list);
INIT_LIST_HEAD(&bat_priv->tt.req_list);
INIT_LIST_HEAD(&bat_priv->tt.roam_list);
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ INIT_HLIST_HEAD(&bat_priv->mcast.mla_list);
+#endif
INIT_HLIST_HEAD(&bat_priv->tvlv.container_list);
INIT_HLIST_HEAD(&bat_priv->tvlv.handler_list);
INIT_HLIST_HEAD(&bat_priv->softif_vlan_list);
@@ -169,6 +173,8 @@ void batadv_mesh_free(struct net_device *soft_iface)
batadv_dat_free(bat_priv);
batadv_bla_free(bat_priv);
+ batadv_mcast_free(bat_priv);
+
/* Free the TT and the originator tables only after having terminated
* all the other depending components which may use these structures for
* their purposes.
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 9374f1a..aa4f73a 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -176,6 +176,7 @@ enum batadv_uev_type {
#include <linux/percpu.h>
#include <linux/slab.h>
#include <net/sock.h> /* struct sock */
+#include <net/addrconf.h> /* ipv6 address stuff */
#include <net/rtnetlink.h>
#include <linux/jiffies.h>
#include <linux/seq_file.h>
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
new file mode 100644
index 0000000..e099fd6
--- /dev/null
+++ b/net/batman-adv/multicast.c
@@ -0,0 +1,218 @@
+/* Copyright (C) 2014 B.A.T.M.A.N. contributors:
+ *
+ * Linus Lüssing
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "main.h"
+#include "multicast.h"
+#include "originator.h"
+#include "hard-interface.h"
+#include "translation-table.h"
+
+/**
+ * batadv_mcast_mla_softif_get - get softif multicast listeners
+ * @dev: the device to collect multicast addresses from
+ * @mcast_list: a list to put found addresses into
+ *
+ * Collect multicast addresses of the local multicast listeners
+ * on the given soft interface, dev, in the given mcast_list.
+ *
+ * Returns -ENOMEM on memory allocation error or the number of
+ * items added to the mcast_list otherwise.
+ */
+static int batadv_mcast_mla_softif_get(struct net_device *dev,
+ struct hlist_head *mcast_list)
+{
+ struct netdev_hw_addr *mc_list_entry;
+ struct batadv_hw_addr *new;
+ int ret = 0;
+
+ netif_addr_lock_bh(dev);
+ netdev_for_each_mc_addr(mc_list_entry, dev) {
+ new = kmalloc(sizeof(*new), GFP_ATOMIC);
+ if (!new) {
+ ret = -ENOMEM;
+ break;
+ }
+
+ ether_addr_copy(new->addr, mc_list_entry->addr);
+ hlist_add_head(&new->list, mcast_list);
+ ret++;
+ }
+ netif_addr_unlock_bh(dev);
+
+ return ret;
+}
+
+/**
+ * batadv_mcast_mla_is_duplicate - check whether an address is in a list
+ * @mcast_addr: the multicast address to check
+ * @mcast_list: the list with multicast addresses to search in
+ *
+ * Returns true if the given address is already in the given list.
+ * Otherwise returns false.
+ */
+static bool batadv_mcast_mla_is_duplicate(uint8_t *mcast_addr,
+ struct hlist_head *mcast_list)
+{
+ struct batadv_hw_addr *mcast_entry;
+
+ hlist_for_each_entry(mcast_entry, mcast_list, list)
+ if (batadv_compare_eth(mcast_entry->addr, mcast_addr))
+ return true;
+
+ return false;
+}
+
+/**
+ * batadv_mcast_mla_list_free - free a list of multicast addresses
+ * @mcast_list: the list to free
+ *
+ * Removes and frees all items in the given mcast_list.
+ */
+static void batadv_mcast_mla_list_free(struct hlist_head *mcast_list)
+{
+ struct batadv_hw_addr *mcast_entry;
+ struct hlist_node *tmp;
+
+ hlist_for_each_entry_safe(mcast_entry, tmp, mcast_list, list) {
+ hlist_del(&mcast_entry->list);
+ kfree(mcast_entry);
+ }
+}
+
+/**
+ * batadv_mcast_mla_tt_retract - clean up multicast listener announcements
+ * @bat_priv: the bat priv with all the soft interface information
+ * @mcast_list: a list of addresses which should _not_ be removed
+ *
+ * Retracts the announcement of any multicast listener from the
+ * translation table except the ones listed in the given mcast_list.
+ *
+ * If mcast_list is NULL then all are retracted.
+ */
+static void batadv_mcast_mla_tt_retract(struct batadv_priv *bat_priv,
+ struct hlist_head *mcast_list)
+{
+ struct batadv_hw_addr *mcast_entry;
+ struct hlist_node *tmp;
+
+ hlist_for_each_entry_safe(mcast_entry, tmp, &bat_priv->mcast.mla_list,
+ list) {
+ if (mcast_list &&
+ batadv_mcast_mla_is_duplicate(mcast_entry->addr,
+ mcast_list))
+ continue;
+
+ batadv_tt_local_remove(bat_priv, mcast_entry->addr,
+ BATADV_NO_FLAGS,
+ "mcast TT outdated", false);
+
+ hlist_del(&mcast_entry->list);
+ kfree(mcast_entry);
+ }
+}
+
+/**
+ * batadv_mcast_mla_tt_add - add multicast listener announcements
+ * @bat_priv: the bat priv with all the soft interface information
+ * @mcast_list: a list of addresses which are going to get added
+ *
+ * Adds multicast listener announcements from the given mcast_list to the
+ * translation table if they have not been added yet.
+ */
+static void batadv_mcast_mla_tt_add(struct batadv_priv *bat_priv,
+ struct hlist_head *mcast_list)
+{
+ struct batadv_hw_addr *mcast_entry;
+ struct hlist_node *tmp;
+
+ if (!mcast_list)
+ return;
+
+ hlist_for_each_entry_safe(mcast_entry, tmp, mcast_list, list) {
+ if (batadv_mcast_mla_is_duplicate(mcast_entry->addr,
+ &bat_priv->mcast.mla_list))
+ continue;
+
+ if (!batadv_tt_local_add(bat_priv->soft_iface,
+ mcast_entry->addr, BATADV_NO_FLAGS,
+ BATADV_NULL_IFINDEX, BATADV_NO_MARK))
+ continue;
+
+ hlist_del(&mcast_entry->list);
+ hlist_add_head(&mcast_entry->list, &bat_priv->mcast.mla_list);
+ }
+}
+
+/**
+ * batadv_mcast_has_bridge - check whether the soft-iface is bridged
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Checks whether there is a bridge on top of our soft interface. Returns
+ * true if so, false otherwise.
+ */
+static bool batadv_mcast_has_bridge(struct batadv_priv *bat_priv)
+{
+ struct net_device *upper = bat_priv->soft_iface;
+
+ rcu_read_lock();
+ do {
+ upper = netdev_master_upper_dev_get_rcu(upper);
+ } while (upper && !(upper->priv_flags & IFF_EBRIDGE));
+ rcu_read_unlock();
+
+ return upper;
+}
+
+/**
+ * batadv_mcast_mla_update - update the own MLAs
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Update the own multicast listener announcements in the translation
+ * table.
+ */
+void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
+{
+ struct net_device *soft_iface = bat_priv->soft_iface;
+ struct hlist_head mcast_list = HLIST_HEAD_INIT;
+ int ret;
+
+ /* Avoid attaching MLAs, if there is a bridge on top of our soft
+ * interface, we don't support that yet (TODO)
+ */
+ if (batadv_mcast_has_bridge(bat_priv))
+ goto update;
+
+ ret = batadv_mcast_mla_softif_get(soft_iface, &mcast_list);
+ if (ret < 0)
+ goto out;
+
+update:
+ batadv_mcast_mla_tt_retract(bat_priv, &mcast_list);
+ batadv_mcast_mla_tt_add(bat_priv, &mcast_list);
+
+out:
+ batadv_mcast_mla_list_free(&mcast_list);
+}
+
+/**
+ * batadv_mcast_free - free the multicast optimizations structures
+ * @bat_priv: the bat priv with all the soft interface information
+ */
+void batadv_mcast_free(struct batadv_priv *bat_priv)
+{
+ batadv_mcast_mla_tt_retract(bat_priv, NULL);
+}
diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h
new file mode 100644
index 0000000..7513e02
--- /dev/null
+++ b/net/batman-adv/multicast.h
@@ -0,0 +1,41 @@
+/* Copyright (C) 2014 B.A.T.M.A.N. contributors:
+ *
+ * Linus Lüssing
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _NET_BATMAN_ADV_MULTICAST_H_
+#define _NET_BATMAN_ADV_MULTICAST_H_
+
+#ifdef CONFIG_BATMAN_ADV_MCAST
+
+void batadv_mcast_mla_update(struct batadv_priv *bat_priv);
+
+void batadv_mcast_free(struct batadv_priv *bat_priv);
+
+#else
+
+static inline void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
+{
+ return;
+}
+
+static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
+{
+ return;
+}
+
+#endif /* CONFIG_BATMAN_ADV_MCAST */
+
+#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 6d0da58..4082d05 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -24,6 +24,7 @@
#include "originator.h"
#include "routing.h"
#include "bridge_loop_avoidance.h"
+#include "multicast.h"
#include <linux/crc32c.h>
@@ -484,7 +485,7 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
{
struct batadv_priv *bat_priv = netdev_priv(soft_iface);
struct batadv_tt_local_entry *tt_local;
- struct batadv_tt_global_entry *tt_global;
+ struct batadv_tt_global_entry *tt_global = NULL;
struct net_device *in_dev = NULL;
struct hlist_head *head;
struct batadv_tt_orig_list_entry *orig_entry;
@@ -497,7 +498,9 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
in_dev = dev_get_by_index(&init_net, ifindex);
tt_local = batadv_tt_local_hash_find(bat_priv, addr, vid);
- tt_global = batadv_tt_global_hash_find(bat_priv, addr, vid);
+
+ if (!is_multicast_ether_addr(addr))
+ tt_global = batadv_tt_global_hash_find(bat_priv, addr, vid);
if (tt_local) {
tt_local->last_seen = jiffies;
@@ -562,8 +565,11 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
tt_local->last_seen = jiffies;
tt_local->common.added_at = tt_local->last_seen;
- /* the batman interface mac address should never be purged */
- if (batadv_compare_eth(addr, soft_iface->dev_addr))
+ /* the batman interface mac and multicast addresses should never be
+ * purged
+ */
+ if (batadv_compare_eth(addr, soft_iface->dev_addr) ||
+ is_multicast_ether_addr(addr))
tt_local->common.flags |= BATADV_TT_CLIENT_NOPURGE;
hash_added = batadv_hash_add(bat_priv->tt.local_hash, batadv_compare_tt,
@@ -1361,6 +1367,11 @@ add_orig_entry:
ret = true;
out_remove:
+ /* Do not remove multicast addresses from the local hash on
+ * global additions
+ */
+ if (is_multicast_ether_addr(tt_addr))
+ goto out;
/* remove address from local hash if present */
local_flags = batadv_tt_local_remove(bat_priv, tt_addr, vid,
@@ -3120,6 +3131,9 @@ static void batadv_tt_local_purge_pending_clients(struct batadv_priv *bat_priv)
*/
static void batadv_tt_local_commit_changes_nolock(struct batadv_priv *bat_priv)
{
+ /* Update multicast addresses in local translation table */
+ batadv_mcast_mla_update(bat_priv);
+
if (atomic_read(&bat_priv->tt.local_changes) < 1) {
if (!batadv_atomic_dec_not_zero(&bat_priv->tt.ogm_append_cnt))
batadv_tt_tvlv_container_update(bat_priv);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 9f52517..d553264 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -607,6 +607,16 @@ struct batadv_priv_dat {
};
#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+/**
+ * struct batadv_priv_mcast - per mesh interface mcast data
+ * @mla_list: list of multicast addresses we are currently announcing via TT
+ */
+struct batadv_priv_mcast {
+ struct hlist_head mla_list;
+};
+#endif
+
/**
* struct batadv_priv_nc - per mesh interface network coding private data
* @work: work queue callback item for cleanup
@@ -702,6 +712,7 @@ struct batadv_softif_vlan {
* @tt: translation table data
* @tvlv: type-version-length-value data
* @dat: distributed arp table data
+ * @mcast: multicast data
* @network_coding: bool indicating whether network coding is enabled
* @batadv_priv_nc: network coding data
*/
@@ -759,6 +770,9 @@ struct batadv_priv {
#ifdef CONFIG_BATMAN_ADV_DAT
struct batadv_priv_dat dat;
#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ struct batadv_priv_mcast mcast;
+#endif
#ifdef CONFIG_BATMAN_ADV_NC
atomic_t network_coding;
struct batadv_priv_nc nc;
@@ -1116,6 +1130,16 @@ struct batadv_dat_entry {
};
/**
+ * struct batadv_hw_addr - a list entry for a MAC address
+ * @list: list node for the linking of entries
+ * @addr: the MAC address of this list entry
+ */
+struct batadv_hw_addr {
+ struct hlist_node list;
+ unsigned char addr[ETH_ALEN];
+};
+
+/**
* struct batadv_dat_candidate - candidate destination for DAT operations
* @type: the type of the selected candidate. It can one of the following:
* - BATADV_DAT_CANDIDATE_NOT_FOUND
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread* [B.A.T.M.A.N.] [PATCH 08/16] batman-adv: Multicast Listener Announcements via Translation Table
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
With this patch a node which has no bridge interface on top of its soft
interface announces its local multicast listeners via the translation
table.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/Kconfig | 9 ++
net/batman-adv/Makefile | 1 +
net/batman-adv/main.c | 6 +
net/batman-adv/main.h | 1 +
net/batman-adv/multicast.c | 218 +++++++++++++++++++++++++++++++++++++
net/batman-adv/multicast.h | 41 +++++++
net/batman-adv/translation-table.c | 22 +++-
net/batman-adv/types.h | 24 ++++
8 files changed, 318 insertions(+), 4 deletions(-)
create mode 100644 net/batman-adv/multicast.c
create mode 100644 net/batman-adv/multicast.h
diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig
index fa780b7..11660a3 100644
--- a/net/batman-adv/Kconfig
+++ b/net/batman-adv/Kconfig
@@ -50,6 +50,15 @@ config BATMAN_ADV_NC
If you think that your network does not need this feature you
can safely disable it and save some space.
+config BATMAN_ADV_MCAST
+ bool "Multicast optimisation"
+ depends on BATMAN_ADV
+ default n
+ help
+ This option enables the multicast optimisation which aims to
+ reduce the air overhead while improving the reliability of
+ multicast messages.
+
config BATMAN_ADV_DEBUG
bool "B.A.T.M.A.N. debugging"
depends on BATMAN_ADV
diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile
index 42df18f..eb7d8c03 100644
--- a/net/batman-adv/Makefile
+++ b/net/batman-adv/Makefile
@@ -36,3 +36,4 @@ batman-adv-y += send.o
batman-adv-y += soft-interface.o
batman-adv-y += sysfs.o
batman-adv-y += translation-table.o
+batman-adv-$(CONFIG_BATMAN_ADV_MCAST) += multicast.o
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index fbeaebd..58e98c8 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -34,6 +34,7 @@
#include "gateway_client.h"
#include "bridge_loop_avoidance.h"
#include "distributed-arp-table.h"
+#include "multicast.h"
#include "gateway_common.h"
#include "hash.h"
#include "bat_algo.h"
@@ -120,6 +121,9 @@ int batadv_mesh_init(struct net_device *soft_iface)
INIT_LIST_HEAD(&bat_priv->tt.changes_list);
INIT_LIST_HEAD(&bat_priv->tt.req_list);
INIT_LIST_HEAD(&bat_priv->tt.roam_list);
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ INIT_HLIST_HEAD(&bat_priv->mcast.mla_list);
+#endif
INIT_HLIST_HEAD(&bat_priv->tvlv.container_list);
INIT_HLIST_HEAD(&bat_priv->tvlv.handler_list);
INIT_HLIST_HEAD(&bat_priv->softif_vlan_list);
@@ -169,6 +173,8 @@ void batadv_mesh_free(struct net_device *soft_iface)
batadv_dat_free(bat_priv);
batadv_bla_free(bat_priv);
+ batadv_mcast_free(bat_priv);
+
/* Free the TT and the originator tables only after having terminated
* all the other depending components which may use these structures for
* their purposes.
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 9374f1a..aa4f73a 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -176,6 +176,7 @@ enum batadv_uev_type {
#include <linux/percpu.h>
#include <linux/slab.h>
#include <net/sock.h> /* struct sock */
+#include <net/addrconf.h> /* ipv6 address stuff */
#include <net/rtnetlink.h>
#include <linux/jiffies.h>
#include <linux/seq_file.h>
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
new file mode 100644
index 0000000..e099fd6
--- /dev/null
+++ b/net/batman-adv/multicast.c
@@ -0,0 +1,218 @@
+/* Copyright (C) 2014 B.A.T.M.A.N. contributors:
+ *
+ * Linus Lüssing
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "main.h"
+#include "multicast.h"
+#include "originator.h"
+#include "hard-interface.h"
+#include "translation-table.h"
+
+/**
+ * batadv_mcast_mla_softif_get - get softif multicast listeners
+ * @dev: the device to collect multicast addresses from
+ * @mcast_list: a list to put found addresses into
+ *
+ * Collect multicast addresses of the local multicast listeners
+ * on the given soft interface, dev, in the given mcast_list.
+ *
+ * Returns -ENOMEM on memory allocation error or the number of
+ * items added to the mcast_list otherwise.
+ */
+static int batadv_mcast_mla_softif_get(struct net_device *dev,
+ struct hlist_head *mcast_list)
+{
+ struct netdev_hw_addr *mc_list_entry;
+ struct batadv_hw_addr *new;
+ int ret = 0;
+
+ netif_addr_lock_bh(dev);
+ netdev_for_each_mc_addr(mc_list_entry, dev) {
+ new = kmalloc(sizeof(*new), GFP_ATOMIC);
+ if (!new) {
+ ret = -ENOMEM;
+ break;
+ }
+
+ ether_addr_copy(new->addr, mc_list_entry->addr);
+ hlist_add_head(&new->list, mcast_list);
+ ret++;
+ }
+ netif_addr_unlock_bh(dev);
+
+ return ret;
+}
+
+/**
+ * batadv_mcast_mla_is_duplicate - check whether an address is in a list
+ * @mcast_addr: the multicast address to check
+ * @mcast_list: the list with multicast addresses to search in
+ *
+ * Returns true if the given address is already in the given list.
+ * Otherwise returns false.
+ */
+static bool batadv_mcast_mla_is_duplicate(uint8_t *mcast_addr,
+ struct hlist_head *mcast_list)
+{
+ struct batadv_hw_addr *mcast_entry;
+
+ hlist_for_each_entry(mcast_entry, mcast_list, list)
+ if (batadv_compare_eth(mcast_entry->addr, mcast_addr))
+ return true;
+
+ return false;
+}
+
+/**
+ * batadv_mcast_mla_list_free - free a list of multicast addresses
+ * @mcast_list: the list to free
+ *
+ * Removes and frees all items in the given mcast_list.
+ */
+static void batadv_mcast_mla_list_free(struct hlist_head *mcast_list)
+{
+ struct batadv_hw_addr *mcast_entry;
+ struct hlist_node *tmp;
+
+ hlist_for_each_entry_safe(mcast_entry, tmp, mcast_list, list) {
+ hlist_del(&mcast_entry->list);
+ kfree(mcast_entry);
+ }
+}
+
+/**
+ * batadv_mcast_mla_tt_retract - clean up multicast listener announcements
+ * @bat_priv: the bat priv with all the soft interface information
+ * @mcast_list: a list of addresses which should _not_ be removed
+ *
+ * Retracts the announcement of any multicast listener from the
+ * translation table except the ones listed in the given mcast_list.
+ *
+ * If mcast_list is NULL then all are retracted.
+ */
+static void batadv_mcast_mla_tt_retract(struct batadv_priv *bat_priv,
+ struct hlist_head *mcast_list)
+{
+ struct batadv_hw_addr *mcast_entry;
+ struct hlist_node *tmp;
+
+ hlist_for_each_entry_safe(mcast_entry, tmp, &bat_priv->mcast.mla_list,
+ list) {
+ if (mcast_list &&
+ batadv_mcast_mla_is_duplicate(mcast_entry->addr,
+ mcast_list))
+ continue;
+
+ batadv_tt_local_remove(bat_priv, mcast_entry->addr,
+ BATADV_NO_FLAGS,
+ "mcast TT outdated", false);
+
+ hlist_del(&mcast_entry->list);
+ kfree(mcast_entry);
+ }
+}
+
+/**
+ * batadv_mcast_mla_tt_add - add multicast listener announcements
+ * @bat_priv: the bat priv with all the soft interface information
+ * @mcast_list: a list of addresses which are going to get added
+ *
+ * Adds multicast listener announcements from the given mcast_list to the
+ * translation table if they have not been added yet.
+ */
+static void batadv_mcast_mla_tt_add(struct batadv_priv *bat_priv,
+ struct hlist_head *mcast_list)
+{
+ struct batadv_hw_addr *mcast_entry;
+ struct hlist_node *tmp;
+
+ if (!mcast_list)
+ return;
+
+ hlist_for_each_entry_safe(mcast_entry, tmp, mcast_list, list) {
+ if (batadv_mcast_mla_is_duplicate(mcast_entry->addr,
+ &bat_priv->mcast.mla_list))
+ continue;
+
+ if (!batadv_tt_local_add(bat_priv->soft_iface,
+ mcast_entry->addr, BATADV_NO_FLAGS,
+ BATADV_NULL_IFINDEX, BATADV_NO_MARK))
+ continue;
+
+ hlist_del(&mcast_entry->list);
+ hlist_add_head(&mcast_entry->list, &bat_priv->mcast.mla_list);
+ }
+}
+
+/**
+ * batadv_mcast_has_bridge - check whether the soft-iface is bridged
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Checks whether there is a bridge on top of our soft interface. Returns
+ * true if so, false otherwise.
+ */
+static bool batadv_mcast_has_bridge(struct batadv_priv *bat_priv)
+{
+ struct net_device *upper = bat_priv->soft_iface;
+
+ rcu_read_lock();
+ do {
+ upper = netdev_master_upper_dev_get_rcu(upper);
+ } while (upper && !(upper->priv_flags & IFF_EBRIDGE));
+ rcu_read_unlock();
+
+ return upper;
+}
+
+/**
+ * batadv_mcast_mla_update - update the own MLAs
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Update the own multicast listener announcements in the translation
+ * table.
+ */
+void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
+{
+ struct net_device *soft_iface = bat_priv->soft_iface;
+ struct hlist_head mcast_list = HLIST_HEAD_INIT;
+ int ret;
+
+ /* Avoid attaching MLAs, if there is a bridge on top of our soft
+ * interface, we don't support that yet (TODO)
+ */
+ if (batadv_mcast_has_bridge(bat_priv))
+ goto update;
+
+ ret = batadv_mcast_mla_softif_get(soft_iface, &mcast_list);
+ if (ret < 0)
+ goto out;
+
+update:
+ batadv_mcast_mla_tt_retract(bat_priv, &mcast_list);
+ batadv_mcast_mla_tt_add(bat_priv, &mcast_list);
+
+out:
+ batadv_mcast_mla_list_free(&mcast_list);
+}
+
+/**
+ * batadv_mcast_free - free the multicast optimizations structures
+ * @bat_priv: the bat priv with all the soft interface information
+ */
+void batadv_mcast_free(struct batadv_priv *bat_priv)
+{
+ batadv_mcast_mla_tt_retract(bat_priv, NULL);
+}
diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h
new file mode 100644
index 0000000..7513e02
--- /dev/null
+++ b/net/batman-adv/multicast.h
@@ -0,0 +1,41 @@
+/* Copyright (C) 2014 B.A.T.M.A.N. contributors:
+ *
+ * Linus Lüssing
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _NET_BATMAN_ADV_MULTICAST_H_
+#define _NET_BATMAN_ADV_MULTICAST_H_
+
+#ifdef CONFIG_BATMAN_ADV_MCAST
+
+void batadv_mcast_mla_update(struct batadv_priv *bat_priv);
+
+void batadv_mcast_free(struct batadv_priv *bat_priv);
+
+#else
+
+static inline void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
+{
+ return;
+}
+
+static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
+{
+ return;
+}
+
+#endif /* CONFIG_BATMAN_ADV_MCAST */
+
+#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 6d0da58..4082d05 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -24,6 +24,7 @@
#include "originator.h"
#include "routing.h"
#include "bridge_loop_avoidance.h"
+#include "multicast.h"
#include <linux/crc32c.h>
@@ -484,7 +485,7 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
{
struct batadv_priv *bat_priv = netdev_priv(soft_iface);
struct batadv_tt_local_entry *tt_local;
- struct batadv_tt_global_entry *tt_global;
+ struct batadv_tt_global_entry *tt_global = NULL;
struct net_device *in_dev = NULL;
struct hlist_head *head;
struct batadv_tt_orig_list_entry *orig_entry;
@@ -497,7 +498,9 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
in_dev = dev_get_by_index(&init_net, ifindex);
tt_local = batadv_tt_local_hash_find(bat_priv, addr, vid);
- tt_global = batadv_tt_global_hash_find(bat_priv, addr, vid);
+
+ if (!is_multicast_ether_addr(addr))
+ tt_global = batadv_tt_global_hash_find(bat_priv, addr, vid);
if (tt_local) {
tt_local->last_seen = jiffies;
@@ -562,8 +565,11 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
tt_local->last_seen = jiffies;
tt_local->common.added_at = tt_local->last_seen;
- /* the batman interface mac address should never be purged */
- if (batadv_compare_eth(addr, soft_iface->dev_addr))
+ /* the batman interface mac and multicast addresses should never be
+ * purged
+ */
+ if (batadv_compare_eth(addr, soft_iface->dev_addr) ||
+ is_multicast_ether_addr(addr))
tt_local->common.flags |= BATADV_TT_CLIENT_NOPURGE;
hash_added = batadv_hash_add(bat_priv->tt.local_hash, batadv_compare_tt,
@@ -1361,6 +1367,11 @@ add_orig_entry:
ret = true;
out_remove:
+ /* Do not remove multicast addresses from the local hash on
+ * global additions
+ */
+ if (is_multicast_ether_addr(tt_addr))
+ goto out;
/* remove address from local hash if present */
local_flags = batadv_tt_local_remove(bat_priv, tt_addr, vid,
@@ -3120,6 +3131,9 @@ static void batadv_tt_local_purge_pending_clients(struct batadv_priv *bat_priv)
*/
static void batadv_tt_local_commit_changes_nolock(struct batadv_priv *bat_priv)
{
+ /* Update multicast addresses in local translation table */
+ batadv_mcast_mla_update(bat_priv);
+
if (atomic_read(&bat_priv->tt.local_changes) < 1) {
if (!batadv_atomic_dec_not_zero(&bat_priv->tt.ogm_append_cnt))
batadv_tt_tvlv_container_update(bat_priv);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 9f52517..d553264 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -607,6 +607,16 @@ struct batadv_priv_dat {
};
#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+/**
+ * struct batadv_priv_mcast - per mesh interface mcast data
+ * @mla_list: list of multicast addresses we are currently announcing via TT
+ */
+struct batadv_priv_mcast {
+ struct hlist_head mla_list;
+};
+#endif
+
/**
* struct batadv_priv_nc - per mesh interface network coding private data
* @work: work queue callback item for cleanup
@@ -702,6 +712,7 @@ struct batadv_softif_vlan {
* @tt: translation table data
* @tvlv: type-version-length-value data
* @dat: distributed arp table data
+ * @mcast: multicast data
* @network_coding: bool indicating whether network coding is enabled
* @batadv_priv_nc: network coding data
*/
@@ -759,6 +770,9 @@ struct batadv_priv {
#ifdef CONFIG_BATMAN_ADV_DAT
struct batadv_priv_dat dat;
#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ struct batadv_priv_mcast mcast;
+#endif
#ifdef CONFIG_BATMAN_ADV_NC
atomic_t network_coding;
struct batadv_priv_nc nc;
@@ -1116,6 +1130,16 @@ struct batadv_dat_entry {
};
/**
+ * struct batadv_hw_addr - a list entry for a MAC address
+ * @list: list node for the linking of entries
+ * @addr: the MAC address of this list entry
+ */
+struct batadv_hw_addr {
+ struct hlist_node list;
+ unsigned char addr[ETH_ALEN];
+};
+
+/**
* struct batadv_dat_candidate - candidate destination for DAT operations
* @type: the type of the selected candidate. It can one of the following:
* - BATADV_DAT_CANDIDATE_NOT_FOUND
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 09/16] batman-adv: introduce capability initialization bitfield
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: netdev, b.a.t.m.a.n, Linus Lüssing, Marek Lindner,
Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
The new bitfield allows us to keep track whether capability subsets of
an originator have gone through their initialization phase yet.
The translation table is the only user right now, but a new one will be
added soon.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/originator.c | 1 -
net/batman-adv/translation-table.c | 12 +++++++-----
net/batman-adv/types.h | 7 ++++---
3 files changed, 11 insertions(+), 9 deletions(-)
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 9f2da37..24a9300 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -664,7 +664,6 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
/* extra reference for return */
atomic_set(&orig_node->refcount, 2);
- orig_node->tt_initialised = false;
orig_node->bat_priv = bat_priv;
ether_addr_copy(orig_node->orig, addr);
batadv_dat_init_orig_node_addr(orig_node);
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 4082d05..f641dfe 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1774,7 +1774,7 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
}
spin_unlock_bh(list_lock);
}
- orig_node->tt_initialised = false;
+ orig_node->capa_initialized &= ~BATADV_ORIG_CAPA_HAS_TT;
}
static bool batadv_tt_global_to_purge(struct batadv_tt_global_entry *tt_global,
@@ -2734,7 +2734,7 @@ static void _batadv_tt_update_changes(struct batadv_priv *bat_priv,
return;
}
}
- orig_node->tt_initialised = true;
+ orig_node->capa_initialized |= BATADV_ORIG_CAPA_HAS_TT;
}
static void batadv_tt_fill_gtable(struct batadv_priv *bat_priv,
@@ -3224,13 +3224,15 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
uint8_t orig_ttvn = (uint8_t)atomic_read(&orig_node->last_ttvn);
struct batadv_tvlv_tt_vlan_data *tt_vlan;
bool full_table = true;
+ bool has_tt_init;
tt_vlan = (struct batadv_tvlv_tt_vlan_data *)tt_buff;
+ has_tt_init = orig_node->capa_initialized & BATADV_ORIG_CAPA_HAS_TT;
+
/* orig table not initialised AND first diff is in the OGM OR the ttvn
* increased by one -> we can apply the attached changes
*/
- if ((!orig_node->tt_initialised && ttvn == 1) ||
- ttvn - orig_ttvn == 1) {
+ if ((!has_tt_init && ttvn == 1) || ttvn - orig_ttvn == 1) {
/* the OGM could not contain the changes due to their size or
* because they have already been sent BATADV_TT_OGM_APPEND_MAX
* times.
@@ -3270,7 +3272,7 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
/* if we missed more than one change or our tables are not
* in sync anymore -> request fresh tt data
*/
- if (!orig_node->tt_initialised || ttvn != orig_ttvn ||
+ if (!has_tt_init || ttvn != orig_ttvn ||
!batadv_tt_global_check_crc(orig_node, tt_vlan,
tt_num_vlan)) {
request_table:
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index d553264..b46117c 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -205,13 +205,12 @@ struct batadv_orig_bat_iv {
* @last_seen: time when last packet from this node was received
* @bcast_seqno_reset: time when the broadcast seqno window was reset
* @capabilities: announced capabilities of this originator
+ * @capa_initialized: bitfield to remember whether a capability was initialized
* @last_ttvn: last seen translation table version number
* @tt_buff: last tt changeset this node received from the orig node
* @tt_buff_len: length of the last tt changeset this node received from the
* orig node
* @tt_buff_lock: lock that protects tt_buff and tt_buff_len
- * @tt_initialised: bool keeping track of whether or not this node have received
- * any translation table information from the orig node yet
* @tt_lock: prevents from updating the table while reading it. Table update is
* made up by two operations (data structure update and metdata -CRC/TTVN-
* recalculation) and they have to be executed atomically in order to avoid
@@ -248,11 +247,11 @@ struct batadv_orig_node {
unsigned long last_seen;
unsigned long bcast_seqno_reset;
uint8_t capabilities;
+ uint8_t capa_initialized;
atomic_t last_ttvn;
unsigned char *tt_buff;
int16_t tt_buff_len;
spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */
- bool tt_initialised;
/* prevents from changing the table while reading it */
spinlock_t tt_lock;
DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
@@ -282,10 +281,12 @@ struct batadv_orig_node {
* enum batadv_orig_capabilities - orig node capabilities
* @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
* @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
+ * @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability
*/
enum batadv_orig_capabilities {
BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
BATADV_ORIG_CAPA_HAS_NC = BIT(1),
+ BATADV_ORIG_CAPA_HAS_TT = BIT(2),
};
/**
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread* [B.A.T.M.A.N.] [PATCH 09/16] batman-adv: introduce capability initialization bitfield
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
The new bitfield allows us to keep track whether capability subsets of
an originator have gone through their initialization phase yet.
The translation table is the only user right now, but a new one will be
added soon.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/originator.c | 1 -
net/batman-adv/translation-table.c | 12 +++++++-----
net/batman-adv/types.h | 7 ++++---
3 files changed, 11 insertions(+), 9 deletions(-)
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 9f2da37..24a9300 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -664,7 +664,6 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
/* extra reference for return */
atomic_set(&orig_node->refcount, 2);
- orig_node->tt_initialised = false;
orig_node->bat_priv = bat_priv;
ether_addr_copy(orig_node->orig, addr);
batadv_dat_init_orig_node_addr(orig_node);
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 4082d05..f641dfe 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1774,7 +1774,7 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
}
spin_unlock_bh(list_lock);
}
- orig_node->tt_initialised = false;
+ orig_node->capa_initialized &= ~BATADV_ORIG_CAPA_HAS_TT;
}
static bool batadv_tt_global_to_purge(struct batadv_tt_global_entry *tt_global,
@@ -2734,7 +2734,7 @@ static void _batadv_tt_update_changes(struct batadv_priv *bat_priv,
return;
}
}
- orig_node->tt_initialised = true;
+ orig_node->capa_initialized |= BATADV_ORIG_CAPA_HAS_TT;
}
static void batadv_tt_fill_gtable(struct batadv_priv *bat_priv,
@@ -3224,13 +3224,15 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
uint8_t orig_ttvn = (uint8_t)atomic_read(&orig_node->last_ttvn);
struct batadv_tvlv_tt_vlan_data *tt_vlan;
bool full_table = true;
+ bool has_tt_init;
tt_vlan = (struct batadv_tvlv_tt_vlan_data *)tt_buff;
+ has_tt_init = orig_node->capa_initialized & BATADV_ORIG_CAPA_HAS_TT;
+
/* orig table not initialised AND first diff is in the OGM OR the ttvn
* increased by one -> we can apply the attached changes
*/
- if ((!orig_node->tt_initialised && ttvn == 1) ||
- ttvn - orig_ttvn == 1) {
+ if ((!has_tt_init && ttvn == 1) || ttvn - orig_ttvn == 1) {
/* the OGM could not contain the changes due to their size or
* because they have already been sent BATADV_TT_OGM_APPEND_MAX
* times.
@@ -3270,7 +3272,7 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
/* if we missed more than one change or our tables are not
* in sync anymore -> request fresh tt data
*/
- if (!orig_node->tt_initialised || ttvn != orig_ttvn ||
+ if (!has_tt_init || ttvn != orig_ttvn ||
!batadv_tt_global_check_crc(orig_node, tt_vlan,
tt_num_vlan)) {
request_table:
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index d553264..b46117c 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -205,13 +205,12 @@ struct batadv_orig_bat_iv {
* @last_seen: time when last packet from this node was received
* @bcast_seqno_reset: time when the broadcast seqno window was reset
* @capabilities: announced capabilities of this originator
+ * @capa_initialized: bitfield to remember whether a capability was initialized
* @last_ttvn: last seen translation table version number
* @tt_buff: last tt changeset this node received from the orig node
* @tt_buff_len: length of the last tt changeset this node received from the
* orig node
* @tt_buff_lock: lock that protects tt_buff and tt_buff_len
- * @tt_initialised: bool keeping track of whether or not this node have received
- * any translation table information from the orig node yet
* @tt_lock: prevents from updating the table while reading it. Table update is
* made up by two operations (data structure update and metdata -CRC/TTVN-
* recalculation) and they have to be executed atomically in order to avoid
@@ -248,11 +247,11 @@ struct batadv_orig_node {
unsigned long last_seen;
unsigned long bcast_seqno_reset;
uint8_t capabilities;
+ uint8_t capa_initialized;
atomic_t last_ttvn;
unsigned char *tt_buff;
int16_t tt_buff_len;
spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */
- bool tt_initialised;
/* prevents from changing the table while reading it */
spinlock_t tt_lock;
DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
@@ -282,10 +281,12 @@ struct batadv_orig_node {
* enum batadv_orig_capabilities - orig node capabilities
* @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
* @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
+ * @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability
*/
enum batadv_orig_capabilities {
BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
BATADV_ORIG_CAPA_HAS_NC = BIT(1),
+ BATADV_ORIG_CAPA_HAS_TT = BIT(2),
};
/**
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 10/16] batman-adv: Announce new capability via multicast TVLV
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: netdev, b.a.t.m.a.n, Linus Lüssing, Marek Lindner,
Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
If the soft interface of a node is not part of a bridge then a node
announces a new multicast TVLV: The existence of this TVLV
signalizes that this node is announcing all of its multicast listeners
via the translation table infrastructure.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/main.c | 1 +
net/batman-adv/multicast.c | 123 ++++++++++++++++++++++++++++++++++++++--
net/batman-adv/multicast.h | 14 +++++
net/batman-adv/originator.c | 6 ++
net/batman-adv/packet.h | 12 ++++
net/batman-adv/soft-interface.c | 4 ++
net/batman-adv/types.h | 13 +++++
7 files changed, 167 insertions(+), 6 deletions(-)
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 58e98c8..8f11b67 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -149,6 +149,7 @@ int batadv_mesh_init(struct net_device *soft_iface)
goto err;
batadv_gw_init(bat_priv);
+ batadv_mcast_init(bat_priv);
atomic_set(&bat_priv->gw.reselect, 0);
atomic_set(&bat_priv->mesh_state, BATADV_MESH_ACTIVE);
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index e099fd6..3ba9a18 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -178,11 +178,52 @@ static bool batadv_mcast_has_bridge(struct batadv_priv *bat_priv)
}
/**
+ * batadv_mcast_mla_tvlv_update - update multicast tvlv
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Updates the own multicast tvlv with our current multicast related settings,
+ * capabilities and inabilities.
+ *
+ * Returns true if the tvlv container is registered afterwards. Otherwise
+ * returns false.
+ */
+static bool batadv_mcast_mla_tvlv_update(struct batadv_priv *bat_priv)
+{
+ struct batadv_tvlv_mcast_data mcast_data;
+
+ mcast_data.flags = BATADV_NO_FLAGS;
+ memset(mcast_data.reserved, 0, sizeof(mcast_data.reserved));
+
+ /* Avoid attaching MLAs, if there is a bridge on top of our soft
+ * interface, we don't support that yet (TODO)
+ */
+ if (batadv_mcast_has_bridge(bat_priv)) {
+ if (bat_priv->mcast.enabled) {
+ batadv_tvlv_container_unregister(bat_priv,
+ BATADV_TVLV_MCAST, 1);
+ bat_priv->mcast.enabled = false;
+ }
+
+ return false;
+ }
+
+ if (!bat_priv->mcast.enabled ||
+ mcast_data.flags != bat_priv->mcast.flags) {
+ batadv_tvlv_container_register(bat_priv, BATADV_TVLV_MCAST, 1,
+ &mcast_data, sizeof(mcast_data));
+ bat_priv->mcast.flags = mcast_data.flags;
+ bat_priv->mcast.enabled = true;
+ }
+
+ return true;
+}
+
+/**
* batadv_mcast_mla_update - update the own MLAs
* @bat_priv: the bat priv with all the soft interface information
*
- * Update the own multicast listener announcements in the translation
- * table.
+ * Updates the own multicast listener announcements in the translation
+ * table as well as the own, announced multicast tvlv container.
*/
void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
{
@@ -190,10 +231,7 @@ void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
struct hlist_head mcast_list = HLIST_HEAD_INIT;
int ret;
- /* Avoid attaching MLAs, if there is a bridge on top of our soft
- * interface, we don't support that yet (TODO)
- */
- if (batadv_mcast_has_bridge(bat_priv))
+ if (!batadv_mcast_mla_tvlv_update(bat_priv))
goto update;
ret = batadv_mcast_mla_softif_get(soft_iface, &mcast_list);
@@ -209,10 +247,83 @@ out:
}
/**
+ * batadv_mcast_tvlv_ogm_handler_v1 - process incoming multicast tvlv container
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig: the orig_node of the ogm
+ * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags)
+ * @tvlv_value: tvlv buffer containing the multicast data
+ * @tvlv_value_len: tvlv buffer length
+ */
+static void batadv_mcast_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t flags,
+ void *tvlv_value,
+ uint16_t tvlv_value_len)
+{
+ bool orig_mcast_enabled = !(flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
+ uint8_t mcast_flags = BATADV_NO_FLAGS;
+ bool orig_initialized;
+
+ orig_initialized = orig->capa_initialized & BATADV_ORIG_CAPA_HAS_MCAST;
+
+ /* If mcast support is turned on decrease the disabled mcast node
+ * counter only if we had increased it for this node before. If this
+ * is a completely new orig_node no need to decrease the counter.
+ */
+ if (orig_mcast_enabled &&
+ !(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST)) {
+ if (orig_initialized)
+ atomic_dec(&bat_priv->mcast.num_disabled);
+ orig->capabilities |= BATADV_ORIG_CAPA_HAS_MCAST;
+ /* If mcast support is being switched off increase the disabled
+ * mcast node counter.
+ */
+ } else if (!orig_mcast_enabled &&
+ orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST) {
+ atomic_inc(&bat_priv->mcast.num_disabled);
+ orig->capabilities &= ~BATADV_ORIG_CAPA_HAS_MCAST;
+ }
+
+ orig->capa_initialized |= BATADV_ORIG_CAPA_HAS_MCAST;
+
+ if (orig_mcast_enabled && tvlv_value &&
+ (tvlv_value_len >= sizeof(mcast_flags)))
+ mcast_flags = *(uint8_t *)tvlv_value;
+
+ orig->mcast_flags = mcast_flags;
+}
+
+/**
+ * batadv_mcast_init - initialize the multicast optimizations structures
+ * @bat_priv: the bat priv with all the soft interface information
+ */
+void batadv_mcast_init(struct batadv_priv *bat_priv)
+{
+ batadv_tvlv_handler_register(bat_priv, batadv_mcast_tvlv_ogm_handler_v1,
+ NULL, BATADV_TVLV_MCAST, 1,
+ BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
+}
+
+/**
* batadv_mcast_free - free the multicast optimizations structures
* @bat_priv: the bat priv with all the soft interface information
*/
void batadv_mcast_free(struct batadv_priv *bat_priv)
{
+ batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_MCAST, 1);
+ batadv_tvlv_handler_unregister(bat_priv, BATADV_TVLV_MCAST, 1);
+
batadv_mcast_mla_tt_retract(bat_priv, NULL);
}
+
+/**
+ * batadv_mcast_purge_orig - reset originator global mcast state modifications
+ * @orig: the originator which is going to get purged
+ */
+void batadv_mcast_purge_orig(struct batadv_orig_node *orig)
+{
+ struct batadv_priv *bat_priv = orig->bat_priv;
+
+ if (!(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST))
+ atomic_dec(&bat_priv->mcast.num_disabled);
+}
diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h
index 7513e02..c029eac 100644
--- a/net/batman-adv/multicast.h
+++ b/net/batman-adv/multicast.h
@@ -22,8 +22,12 @@
void batadv_mcast_mla_update(struct batadv_priv *bat_priv);
+void batadv_mcast_init(struct batadv_priv *bat_priv);
+
void batadv_mcast_free(struct batadv_priv *bat_priv);
+void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
+
#else
static inline void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
@@ -31,11 +35,21 @@ static inline void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
return;
}
+static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
+{
+ return 0;
+}
+
static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
{
return;
}
+static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
+{
+ return;
+}
+
#endif /* CONFIG_BATMAN_ADV_MCAST */
#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 24a9300..ffd9dfb 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -27,6 +27,7 @@
#include "bridge_loop_avoidance.h"
#include "network-coding.h"
#include "fragmentation.h"
+#include "multicast.h"
/* hash class keys */
static struct lock_class_key batadv_orig_hash_lock_class_key;
@@ -557,6 +558,8 @@ static void batadv_orig_node_free_rcu(struct rcu_head *rcu)
}
spin_unlock_bh(&orig_node->neigh_list_lock);
+ batadv_mcast_purge_orig(orig_node);
+
/* Free nc_nodes */
batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL);
@@ -672,6 +675,9 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
orig_node->tt_buff_len = 0;
reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS);
orig_node->bcast_seqno_reset = reset_time;
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ orig_node->mcast_flags = BATADV_NO_FLAGS;
+#endif
/* create a vlan object for the "untagged" LAN */
vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS);
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index 0a381d1..e8c483d 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -145,6 +145,7 @@ enum batadv_bla_claimframe {
* @BATADV_TVLV_NC: network coding tvlv
* @BATADV_TVLV_TT: translation table tvlv
* @BATADV_TVLV_ROAM: roaming advertisement tvlv
+ * @BATADV_TVLV_MCAST: multicast capability tvlv
*/
enum batadv_tvlv_type {
BATADV_TVLV_GW = 0x01,
@@ -152,6 +153,7 @@ enum batadv_tvlv_type {
BATADV_TVLV_NC = 0x03,
BATADV_TVLV_TT = 0x04,
BATADV_TVLV_ROAM = 0x05,
+ BATADV_TVLV_MCAST = 0x06,
};
#pragma pack(2)
@@ -504,4 +506,14 @@ struct batadv_tvlv_roam_adv {
__be16 vid;
};
+/**
+ * struct batadv_tvlv_mcast_data - payload of a multicast tvlv
+ * @flags: multicast flags announced by the orig node
+ * @reserved: reserved field
+ */
+struct batadv_tvlv_mcast_data {
+ uint8_t flags;
+ uint8_t reserved[3];
+};
+
#endif /* _NET_BATMAN_ADV_PACKET_H_ */
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 633e9d6..8ff47b7 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -689,6 +689,10 @@ static int batadv_softif_init_late(struct net_device *dev)
#ifdef CONFIG_BATMAN_ADV_DAT
atomic_set(&bat_priv->distributed_arp_table, 1);
#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ bat_priv->mcast.flags = BATADV_NO_FLAGS;
+ atomic_set(&bat_priv->mcast.num_disabled, 0);
+#endif
atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF);
atomic_set(&bat_priv->gw_sel_class, 20);
atomic_set(&bat_priv->gw.bandwidth_down, 100);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index b46117c..96ee0d2 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -204,6 +204,7 @@ struct batadv_orig_bat_iv {
* @batadv_dat_addr_t: address of the orig node in the distributed hash
* @last_seen: time when last packet from this node was received
* @bcast_seqno_reset: time when the broadcast seqno window was reset
+ * @mcast_flags: multicast flags announced by the orig node
* @capabilities: announced capabilities of this originator
* @capa_initialized: bitfield to remember whether a capability was initialized
* @last_ttvn: last seen translation table version number
@@ -246,6 +247,9 @@ struct batadv_orig_node {
#endif
unsigned long last_seen;
unsigned long bcast_seqno_reset;
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ uint8_t mcast_flags;
+#endif
uint8_t capabilities;
uint8_t capa_initialized;
atomic_t last_ttvn;
@@ -282,11 +286,14 @@ struct batadv_orig_node {
* @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
* @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
* @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability
+ * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
+ * (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
*/
enum batadv_orig_capabilities {
BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
BATADV_ORIG_CAPA_HAS_NC = BIT(1),
BATADV_ORIG_CAPA_HAS_TT = BIT(2),
+ BATADV_ORIG_CAPA_HAS_MCAST = BIT(3),
};
/**
@@ -612,9 +619,15 @@ struct batadv_priv_dat {
/**
* struct batadv_priv_mcast - per mesh interface mcast data
* @mla_list: list of multicast addresses we are currently announcing via TT
+ * @flags: the flags we have last sent in our mcast tvlv
+ * @enabled: whether the multicast tvlv is currently enabled
+ * @num_disabled: number of nodes that have no mcast tvlv
*/
struct batadv_priv_mcast {
struct hlist_head mla_list;
+ uint8_t flags;
+ bool enabled;
+ atomic_t num_disabled;
};
#endif
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread* [B.A.T.M.A.N.] [PATCH 10/16] batman-adv: Announce new capability via multicast TVLV
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
If the soft interface of a node is not part of a bridge then a node
announces a new multicast TVLV: The existence of this TVLV
signalizes that this node is announcing all of its multicast listeners
via the translation table infrastructure.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/main.c | 1 +
net/batman-adv/multicast.c | 123 ++++++++++++++++++++++++++++++++++++++--
net/batman-adv/multicast.h | 14 +++++
net/batman-adv/originator.c | 6 ++
net/batman-adv/packet.h | 12 ++++
net/batman-adv/soft-interface.c | 4 ++
net/batman-adv/types.h | 13 +++++
7 files changed, 167 insertions(+), 6 deletions(-)
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 58e98c8..8f11b67 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -149,6 +149,7 @@ int batadv_mesh_init(struct net_device *soft_iface)
goto err;
batadv_gw_init(bat_priv);
+ batadv_mcast_init(bat_priv);
atomic_set(&bat_priv->gw.reselect, 0);
atomic_set(&bat_priv->mesh_state, BATADV_MESH_ACTIVE);
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index e099fd6..3ba9a18 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -178,11 +178,52 @@ static bool batadv_mcast_has_bridge(struct batadv_priv *bat_priv)
}
/**
+ * batadv_mcast_mla_tvlv_update - update multicast tvlv
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Updates the own multicast tvlv with our current multicast related settings,
+ * capabilities and inabilities.
+ *
+ * Returns true if the tvlv container is registered afterwards. Otherwise
+ * returns false.
+ */
+static bool batadv_mcast_mla_tvlv_update(struct batadv_priv *bat_priv)
+{
+ struct batadv_tvlv_mcast_data mcast_data;
+
+ mcast_data.flags = BATADV_NO_FLAGS;
+ memset(mcast_data.reserved, 0, sizeof(mcast_data.reserved));
+
+ /* Avoid attaching MLAs, if there is a bridge on top of our soft
+ * interface, we don't support that yet (TODO)
+ */
+ if (batadv_mcast_has_bridge(bat_priv)) {
+ if (bat_priv->mcast.enabled) {
+ batadv_tvlv_container_unregister(bat_priv,
+ BATADV_TVLV_MCAST, 1);
+ bat_priv->mcast.enabled = false;
+ }
+
+ return false;
+ }
+
+ if (!bat_priv->mcast.enabled ||
+ mcast_data.flags != bat_priv->mcast.flags) {
+ batadv_tvlv_container_register(bat_priv, BATADV_TVLV_MCAST, 1,
+ &mcast_data, sizeof(mcast_data));
+ bat_priv->mcast.flags = mcast_data.flags;
+ bat_priv->mcast.enabled = true;
+ }
+
+ return true;
+}
+
+/**
* batadv_mcast_mla_update - update the own MLAs
* @bat_priv: the bat priv with all the soft interface information
*
- * Update the own multicast listener announcements in the translation
- * table.
+ * Updates the own multicast listener announcements in the translation
+ * table as well as the own, announced multicast tvlv container.
*/
void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
{
@@ -190,10 +231,7 @@ void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
struct hlist_head mcast_list = HLIST_HEAD_INIT;
int ret;
- /* Avoid attaching MLAs, if there is a bridge on top of our soft
- * interface, we don't support that yet (TODO)
- */
- if (batadv_mcast_has_bridge(bat_priv))
+ if (!batadv_mcast_mla_tvlv_update(bat_priv))
goto update;
ret = batadv_mcast_mla_softif_get(soft_iface, &mcast_list);
@@ -209,10 +247,83 @@ out:
}
/**
+ * batadv_mcast_tvlv_ogm_handler_v1 - process incoming multicast tvlv container
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig: the orig_node of the ogm
+ * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags)
+ * @tvlv_value: tvlv buffer containing the multicast data
+ * @tvlv_value_len: tvlv buffer length
+ */
+static void batadv_mcast_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t flags,
+ void *tvlv_value,
+ uint16_t tvlv_value_len)
+{
+ bool orig_mcast_enabled = !(flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
+ uint8_t mcast_flags = BATADV_NO_FLAGS;
+ bool orig_initialized;
+
+ orig_initialized = orig->capa_initialized & BATADV_ORIG_CAPA_HAS_MCAST;
+
+ /* If mcast support is turned on decrease the disabled mcast node
+ * counter only if we had increased it for this node before. If this
+ * is a completely new orig_node no need to decrease the counter.
+ */
+ if (orig_mcast_enabled &&
+ !(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST)) {
+ if (orig_initialized)
+ atomic_dec(&bat_priv->mcast.num_disabled);
+ orig->capabilities |= BATADV_ORIG_CAPA_HAS_MCAST;
+ /* If mcast support is being switched off increase the disabled
+ * mcast node counter.
+ */
+ } else if (!orig_mcast_enabled &&
+ orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST) {
+ atomic_inc(&bat_priv->mcast.num_disabled);
+ orig->capabilities &= ~BATADV_ORIG_CAPA_HAS_MCAST;
+ }
+
+ orig->capa_initialized |= BATADV_ORIG_CAPA_HAS_MCAST;
+
+ if (orig_mcast_enabled && tvlv_value &&
+ (tvlv_value_len >= sizeof(mcast_flags)))
+ mcast_flags = *(uint8_t *)tvlv_value;
+
+ orig->mcast_flags = mcast_flags;
+}
+
+/**
+ * batadv_mcast_init - initialize the multicast optimizations structures
+ * @bat_priv: the bat priv with all the soft interface information
+ */
+void batadv_mcast_init(struct batadv_priv *bat_priv)
+{
+ batadv_tvlv_handler_register(bat_priv, batadv_mcast_tvlv_ogm_handler_v1,
+ NULL, BATADV_TVLV_MCAST, 1,
+ BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
+}
+
+/**
* batadv_mcast_free - free the multicast optimizations structures
* @bat_priv: the bat priv with all the soft interface information
*/
void batadv_mcast_free(struct batadv_priv *bat_priv)
{
+ batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_MCAST, 1);
+ batadv_tvlv_handler_unregister(bat_priv, BATADV_TVLV_MCAST, 1);
+
batadv_mcast_mla_tt_retract(bat_priv, NULL);
}
+
+/**
+ * batadv_mcast_purge_orig - reset originator global mcast state modifications
+ * @orig: the originator which is going to get purged
+ */
+void batadv_mcast_purge_orig(struct batadv_orig_node *orig)
+{
+ struct batadv_priv *bat_priv = orig->bat_priv;
+
+ if (!(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST))
+ atomic_dec(&bat_priv->mcast.num_disabled);
+}
diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h
index 7513e02..c029eac 100644
--- a/net/batman-adv/multicast.h
+++ b/net/batman-adv/multicast.h
@@ -22,8 +22,12 @@
void batadv_mcast_mla_update(struct batadv_priv *bat_priv);
+void batadv_mcast_init(struct batadv_priv *bat_priv);
+
void batadv_mcast_free(struct batadv_priv *bat_priv);
+void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
+
#else
static inline void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
@@ -31,11 +35,21 @@ static inline void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
return;
}
+static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
+{
+ return 0;
+}
+
static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
{
return;
}
+static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
+{
+ return;
+}
+
#endif /* CONFIG_BATMAN_ADV_MCAST */
#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 24a9300..ffd9dfb 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -27,6 +27,7 @@
#include "bridge_loop_avoidance.h"
#include "network-coding.h"
#include "fragmentation.h"
+#include "multicast.h"
/* hash class keys */
static struct lock_class_key batadv_orig_hash_lock_class_key;
@@ -557,6 +558,8 @@ static void batadv_orig_node_free_rcu(struct rcu_head *rcu)
}
spin_unlock_bh(&orig_node->neigh_list_lock);
+ batadv_mcast_purge_orig(orig_node);
+
/* Free nc_nodes */
batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL);
@@ -672,6 +675,9 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
orig_node->tt_buff_len = 0;
reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS);
orig_node->bcast_seqno_reset = reset_time;
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ orig_node->mcast_flags = BATADV_NO_FLAGS;
+#endif
/* create a vlan object for the "untagged" LAN */
vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS);
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index 0a381d1..e8c483d 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -145,6 +145,7 @@ enum batadv_bla_claimframe {
* @BATADV_TVLV_NC: network coding tvlv
* @BATADV_TVLV_TT: translation table tvlv
* @BATADV_TVLV_ROAM: roaming advertisement tvlv
+ * @BATADV_TVLV_MCAST: multicast capability tvlv
*/
enum batadv_tvlv_type {
BATADV_TVLV_GW = 0x01,
@@ -152,6 +153,7 @@ enum batadv_tvlv_type {
BATADV_TVLV_NC = 0x03,
BATADV_TVLV_TT = 0x04,
BATADV_TVLV_ROAM = 0x05,
+ BATADV_TVLV_MCAST = 0x06,
};
#pragma pack(2)
@@ -504,4 +506,14 @@ struct batadv_tvlv_roam_adv {
__be16 vid;
};
+/**
+ * struct batadv_tvlv_mcast_data - payload of a multicast tvlv
+ * @flags: multicast flags announced by the orig node
+ * @reserved: reserved field
+ */
+struct batadv_tvlv_mcast_data {
+ uint8_t flags;
+ uint8_t reserved[3];
+};
+
#endif /* _NET_BATMAN_ADV_PACKET_H_ */
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 633e9d6..8ff47b7 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -689,6 +689,10 @@ static int batadv_softif_init_late(struct net_device *dev)
#ifdef CONFIG_BATMAN_ADV_DAT
atomic_set(&bat_priv->distributed_arp_table, 1);
#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ bat_priv->mcast.flags = BATADV_NO_FLAGS;
+ atomic_set(&bat_priv->mcast.num_disabled, 0);
+#endif
atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF);
atomic_set(&bat_priv->gw_sel_class, 20);
atomic_set(&bat_priv->gw.bandwidth_down, 100);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index b46117c..96ee0d2 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -204,6 +204,7 @@ struct batadv_orig_bat_iv {
* @batadv_dat_addr_t: address of the orig node in the distributed hash
* @last_seen: time when last packet from this node was received
* @bcast_seqno_reset: time when the broadcast seqno window was reset
+ * @mcast_flags: multicast flags announced by the orig node
* @capabilities: announced capabilities of this originator
* @capa_initialized: bitfield to remember whether a capability was initialized
* @last_ttvn: last seen translation table version number
@@ -246,6 +247,9 @@ struct batadv_orig_node {
#endif
unsigned long last_seen;
unsigned long bcast_seqno_reset;
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ uint8_t mcast_flags;
+#endif
uint8_t capabilities;
uint8_t capa_initialized;
atomic_t last_ttvn;
@@ -282,11 +286,14 @@ struct batadv_orig_node {
* @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
* @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
* @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability
+ * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
+ * (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
*/
enum batadv_orig_capabilities {
BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
BATADV_ORIG_CAPA_HAS_NC = BIT(1),
BATADV_ORIG_CAPA_HAS_TT = BIT(2),
+ BATADV_ORIG_CAPA_HAS_MCAST = BIT(3),
};
/**
@@ -612,9 +619,15 @@ struct batadv_priv_dat {
/**
* struct batadv_priv_mcast - per mesh interface mcast data
* @mla_list: list of multicast addresses we are currently announcing via TT
+ * @flags: the flags we have last sent in our mcast tvlv
+ * @enabled: whether the multicast tvlv is currently enabled
+ * @num_disabled: number of nodes that have no mcast tvlv
*/
struct batadv_priv_mcast {
struct hlist_head mla_list;
+ uint8_t flags;
+ bool enabled;
+ atomic_t num_disabled;
};
#endif
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 11/16] batman-adv: Modified forwarding behaviour for multicast packets
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: netdev, b.a.t.m.a.n, Linus Lüssing, Marek Lindner,
Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
With this patch a multicast packet is not always simply flooded anymore,
the behaviour for the following cases is changed to reduce
unnecessary overhead:
If all nodes within the horizon of a certain node have signalized
multicast listener announcement capability then an IPv6 multicast packet
with a destination of IPv6 link-local scope (excluding ff02::1) coming
from the upstream of this node...
* ...is dropped if there is no according multicast listener in the
translation table,
* ...is forwarded via unicast if there is a single node with interested
multicast listeners
* ...and otherwise still gets flooded.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
Documentation/ABI/testing/sysfs-class-net-mesh | 9 ++
net/batman-adv/multicast.c | 126 +++++++++++++++++++++++++
net/batman-adv/multicast.h | 25 +++++
net/batman-adv/send.c | 10 +-
net/batman-adv/send.h | 5 +
net/batman-adv/soft-interface.c | 20 +++-
net/batman-adv/sysfs.c | 6 ++
net/batman-adv/translation-table.c | 91 ++++++++++++++----
net/batman-adv/translation-table.h | 2 +
net/batman-adv/types.h | 7 ++
10 files changed, 275 insertions(+), 26 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-class-net-mesh b/Documentation/ABI/testing/sysfs-class-net-mesh
index 4793d3d..c464062 100644
--- a/Documentation/ABI/testing/sysfs-class-net-mesh
+++ b/Documentation/ABI/testing/sysfs-class-net-mesh
@@ -76,6 +76,15 @@ Description:
is used to classify clients as "isolated" by the
Extended Isolation feature.
+What: /sys/class/net/<mesh_iface>/mesh/multicast_mode
+Date: Feb 2014
+Contact: Linus Lüssing <linus.luessing@web.de>
+Description:
+ Indicates whether multicast optimizations are enabled
+ or disabled. If set to zero then all nodes in the
+ mesh are going to use classic flooding for any
+ multicast packet with no optimizations.
+
What: /sys/class/net/<mesh_iface>/mesh/network_coding
Date: Nov 2012
Contact: Martin Hundeboll <martin@hundeboll.net>
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index 3ba9a18..1d1627f 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -20,6 +20,7 @@
#include "originator.h"
#include "hard-interface.h"
#include "translation-table.h"
+#include "multicast.h"
/**
* batadv_mcast_mla_softif_get - get softif multicast listeners
@@ -247,6 +248,131 @@ out:
}
/**
+ * batadv_mcast_forw_mode_check_ipv6 - check for optimized forwarding potential
+ * @bat_priv: the bat priv with all the soft interface information
+ * @skb: the IPv6 packet to check
+ *
+ * Checks whether the given IPv6 packet has the potential to be forwarded with a
+ * mode more optimal than classic flooding.
+ *
+ * If so then returns 0. Otherwise -EINVAL is returned or -ENOMEM if we are out
+ * of memory.
+ */
+static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv,
+ struct sk_buff *skb)
+{
+ struct ipv6hdr *ip6hdr;
+
+ /* We might fail due to out-of-memory -> drop it */
+ if (!pskb_may_pull(skb, sizeof(struct ethhdr) + sizeof(*ip6hdr)))
+ return -ENOMEM;
+
+ ip6hdr = ipv6_hdr(skb);
+
+ /* TODO: Implement Multicast Router Discovery (RFC4286),
+ * then allow scope > link local, too
+ */
+ if (IPV6_ADDR_MC_SCOPE(&ip6hdr->daddr) != IPV6_ADDR_SCOPE_LINKLOCAL)
+ return -EINVAL;
+
+ /* link-local-all-nodes multicast listeners behind a bridge are
+ * not snoopable (see RFC4541, section 3, paragraph 3)
+ */
+ if (ipv6_addr_is_ll_all_nodes(&ip6hdr->daddr))
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * batadv_mcast_forw_mode_check - check for optimized forwarding potential
+ * @bat_priv: the bat priv with all the soft interface information
+ * @skb: the multicast frame to check
+ *
+ * Checks whether the given multicast ethernet frame has the potential to be
+ * forwarded with a mode more optimal than classic flooding.
+ *
+ * If so then returns 0. Otherwise -EINVAL is returned or -ENOMEM if we are out
+ * of memory.
+ */
+static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv,
+ struct sk_buff *skb)
+{
+ struct ethhdr *ethhdr = eth_hdr(skb);
+
+ if (!atomic_read(&bat_priv->multicast_mode))
+ return -EINVAL;
+
+ if (atomic_read(&bat_priv->mcast.num_disabled))
+ return -EINVAL;
+
+ switch (ntohs(ethhdr->h_proto)) {
+ case ETH_P_IPV6:
+ return batadv_mcast_forw_mode_check_ipv6(bat_priv, skb);
+ default:
+ return -EINVAL;
+ }
+}
+
+/**
+ * batadv_mcast_forw_tt_node_get - get a multicast tt node
+ * @bat_priv: the bat priv with all the soft interface information
+ * @ethhdr: the ether header containing the multicast destination
+ *
+ * Returns an orig_node matching the multicast address provided by ethhdr
+ * via a translation table lookup. This increases the returned nodes refcount.
+ */
+static struct batadv_orig_node *
+batadv_mcast_forw_tt_node_get(struct batadv_priv *bat_priv,
+ struct ethhdr *ethhdr)
+{
+ return batadv_transtable_search(bat_priv, ethhdr->h_source,
+ ethhdr->h_dest, BATADV_NO_FLAGS);
+}
+
+/**
+ * batadv_mcast_forw_mode - check on how to forward a multicast packet
+ * @bat_priv: the bat priv with all the soft interface information
+ * @skb: The multicast packet to check
+ * @orig: an originator to be set to forward the skb to
+ *
+ * Returns the forwarding mode as enum batadv_forw_mode and in case of
+ * BATADV_FORW_SINGLE set the orig to the single originator the skb
+ * should be forwarded to.
+ */
+enum batadv_forw_mode
+batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
+ struct batadv_orig_node **orig)
+{
+ struct ethhdr *ethhdr;
+ int ret, tt_count;
+
+ ret = batadv_mcast_forw_mode_check(bat_priv, skb);
+ if (ret == -ENOMEM)
+ return BATADV_FORW_NONE;
+ else if (ret < 0)
+ return BATADV_FORW_ALL;
+
+ ethhdr = eth_hdr(skb);
+
+ tt_count = batadv_tt_global_hash_count(bat_priv, ethhdr->h_dest,
+ BATADV_NO_FLAGS);
+
+ switch (tt_count) {
+ case 1:
+ *orig = batadv_mcast_forw_tt_node_get(bat_priv, ethhdr);
+ if (*orig)
+ return BATADV_FORW_SINGLE;
+
+ /* fall through */
+ case 0:
+ return BATADV_FORW_NONE;
+ default:
+ return BATADV_FORW_ALL;
+ }
+}
+
+/**
* batadv_mcast_tvlv_ogm_handler_v1 - process incoming multicast tvlv container
* @bat_priv: the bat priv with all the soft interface information
* @orig: the orig_node of the ogm
diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h
index c029eac..73b5d45 100644
--- a/net/batman-adv/multicast.h
+++ b/net/batman-adv/multicast.h
@@ -18,10 +18,28 @@
#ifndef _NET_BATMAN_ADV_MULTICAST_H_
#define _NET_BATMAN_ADV_MULTICAST_H_
+/**
+ * batadv_forw_mode - the way a packet should be forwarded as
+ * @BATADV_FORW_ALL: forward the packet to all nodes (currently via classic
+ * flooding)
+ * @BATADV_FORW_SINGLE: forward the packet to a single node (currently via the
+ * BATMAN unicast routing protocol)
+ * @BATADV_FORW_NONE: don't forward, drop it
+ */
+enum batadv_forw_mode {
+ BATADV_FORW_ALL,
+ BATADV_FORW_SINGLE,
+ BATADV_FORW_NONE,
+};
+
#ifdef CONFIG_BATMAN_ADV_MCAST
void batadv_mcast_mla_update(struct batadv_priv *bat_priv);
+enum batadv_forw_mode
+batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
+ struct batadv_orig_node **mcast_single_orig);
+
void batadv_mcast_init(struct batadv_priv *bat_priv);
void batadv_mcast_free(struct batadv_priv *bat_priv);
@@ -35,6 +53,13 @@ static inline void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
return;
}
+static inline enum batadv_forw_mode
+batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
+ struct batadv_orig_node **mcast_single_orig)
+{
+ return BATADV_FORW_ALL;
+}
+
static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
{
return 0;
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index ce163d5..8bee5e8 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -248,11 +248,11 @@ out:
*
* Returns NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
*/
-static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
- struct sk_buff *skb, int packet_type,
- int packet_subtype,
- struct batadv_orig_node *orig_node,
- unsigned short vid)
+int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
+ struct sk_buff *skb, int packet_type,
+ int packet_subtype,
+ struct batadv_orig_node *orig_node,
+ unsigned short vid)
{
struct ethhdr *ethhdr;
struct batadv_unicast_packet *unicast_packet;
diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h
index 31e8781..38d0ec1 100644
--- a/net/batman-adv/send.h
+++ b/net/batman-adv/send.h
@@ -36,6 +36,11 @@ bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
struct sk_buff *skb,
struct batadv_orig_node *orig_node,
int packet_subtype);
+int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
+ struct sk_buff *skb, int packet_type,
+ int packet_subtype,
+ struct batadv_orig_node *orig_node,
+ unsigned short vid);
int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
struct sk_buff *skb, int packet_type,
int packet_subtype, uint8_t *dst_hint,
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 8ff47b7..1a643fe6 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -32,6 +32,7 @@
#include <linux/ethtool.h>
#include <linux/etherdevice.h>
#include <linux/if_vlan.h>
+#include "multicast.h"
#include "bridge_loop_avoidance.h"
#include "network-coding.h"
@@ -170,6 +171,8 @@ static int batadv_interface_tx(struct sk_buff *skb,
unsigned short vid;
uint32_t seqno;
int gw_mode;
+ enum batadv_forw_mode forw_mode;
+ struct batadv_orig_node *mcast_single_orig = NULL;
if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
goto dropped;
@@ -247,9 +250,19 @@ static int batadv_interface_tx(struct sk_buff *skb,
* directed to a DHCP server
*/
goto dropped;
- }
send:
+ if (do_bcast && !is_broadcast_ether_addr(ethhdr->h_dest)) {
+ forw_mode = batadv_mcast_forw_mode(bat_priv, skb,
+ &mcast_single_orig);
+ if (forw_mode == BATADV_FORW_NONE)
+ goto dropped;
+
+ if (forw_mode == BATADV_FORW_SINGLE)
+ do_bcast = false;
+ }
+ }
+
batadv_skb_set_priority(skb, 0);
/* ethernet packet should be broadcasted */
@@ -301,6 +314,10 @@ send:
if (ret)
goto dropped;
ret = batadv_send_skb_via_gw(bat_priv, skb, vid);
+ } else if (mcast_single_orig) {
+ ret = batadv_send_skb_unicast(bat_priv, skb,
+ BATADV_UNICAST, 0,
+ mcast_single_orig, vid);
} else {
if (batadv_dat_snoop_outgoing_arp_request(bat_priv,
skb))
@@ -691,6 +708,7 @@ static int batadv_softif_init_late(struct net_device *dev)
#endif
#ifdef CONFIG_BATMAN_ADV_MCAST
bat_priv->mcast.flags = BATADV_NO_FLAGS;
+ atomic_set(&bat_priv->multicast_mode, 1);
atomic_set(&bat_priv->mcast.num_disabled, 0);
#endif
atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF);
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c
index e456bf6..1ebb0d9 100644
--- a/net/batman-adv/sysfs.c
+++ b/net/batman-adv/sysfs.c
@@ -539,6 +539,9 @@ BATADV_ATTR_SIF_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, BATADV_TQ_MAX_VALUE,
batadv_post_gw_reselect);
static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth,
batadv_store_gw_bwidth);
+#ifdef CONFIG_BATMAN_ADV_MCAST
+BATADV_ATTR_SIF_BOOL(multicast_mode, S_IRUGO | S_IWUSR, NULL);
+#endif
#ifdef CONFIG_BATMAN_ADV_DEBUG
BATADV_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, BATADV_DBG_ALL, NULL);
#endif
@@ -558,6 +561,9 @@ static struct batadv_attribute *batadv_mesh_attrs[] = {
#ifdef CONFIG_BATMAN_ADV_DAT
&batadv_attr_distributed_arp_table,
#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ &batadv_attr_multicast_mode,
+#endif
&batadv_attr_fragmentation,
&batadv_attr_routing_algo,
&batadv_attr_gw_mode,
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index f641dfe..d636bde 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -193,6 +193,31 @@ batadv_tt_global_entry_free_ref(struct batadv_tt_global_entry *tt_global_entry)
}
}
+/**
+ * batadv_tt_global_hash_count - count the number of orig entries
+ * @hash: hash table containing the tt entries
+ * @addr: the mac address of the client to count entries for
+ * @vid: VLAN identifier
+ *
+ * Return the number of originators advertising the given address/data
+ * (excluding ourself).
+ */
+int batadv_tt_global_hash_count(struct batadv_priv *bat_priv,
+ const uint8_t *addr, unsigned short vid)
+{
+ struct batadv_tt_global_entry *tt_global_entry;
+ int count;
+
+ tt_global_entry = batadv_tt_global_hash_find(bat_priv, addr, vid);
+ if (!tt_global_entry)
+ return 0;
+
+ count = atomic_read(&tt_global_entry->orig_list_count);
+ batadv_tt_global_entry_free_ref(tt_global_entry);
+
+ return count;
+}
+
static void batadv_tt_orig_list_entry_free_rcu(struct rcu_head *rcu)
{
struct batadv_tt_orig_list_entry *orig_entry;
@@ -1225,6 +1250,8 @@ batadv_tt_global_orig_entry_add(struct batadv_tt_global_entry *tt_global,
hlist_add_head_rcu(&orig_entry->list,
&tt_global->orig_list);
spin_unlock_bh(&tt_global->list_lock);
+ atomic_inc(&tt_global->orig_list_count);
+
out:
if (orig_entry)
batadv_tt_orig_list_entry_free_ref(orig_entry);
@@ -1298,6 +1325,7 @@ static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
common->added_at = jiffies;
INIT_HLIST_HEAD(&tt_global_entry->orig_list);
+ atomic_set(&tt_global_entry->orig_list_count, 0);
spin_lock_init(&tt_global_entry->list_lock);
hash_added = batadv_hash_add(bat_priv->tt.global_hash,
@@ -1563,6 +1591,25 @@ out:
return 0;
}
+/**
+ * batadv_tt_global_del_orig_entry - remove and free an orig_entry
+ * @tt_global_entry: the global entry to remove the orig_entry from
+ * @orig_entry: the orig entry to remove and free
+ *
+ * Remove an orig_entry from its list in the given tt_global_entry and
+ * free this orig_entry afterwards.
+ */
+static void
+batadv_tt_global_del_orig_entry(struct batadv_tt_global_entry *tt_global_entry,
+ struct batadv_tt_orig_list_entry *orig_entry)
+{
+ batadv_tt_global_size_dec(orig_entry->orig_node,
+ tt_global_entry->common.vid);
+ atomic_dec(&tt_global_entry->orig_list_count);
+ hlist_del_rcu(&orig_entry->list);
+ batadv_tt_orig_list_entry_free_ref(orig_entry);
+}
+
/* deletes the orig list of a tt_global_entry */
static void
batadv_tt_global_del_orig_list(struct batadv_tt_global_entry *tt_global_entry)
@@ -1573,20 +1620,26 @@ batadv_tt_global_del_orig_list(struct batadv_tt_global_entry *tt_global_entry)
spin_lock_bh(&tt_global_entry->list_lock);
head = &tt_global_entry->orig_list;
- hlist_for_each_entry_safe(orig_entry, safe, head, list) {
- hlist_del_rcu(&orig_entry->list);
- batadv_tt_global_size_dec(orig_entry->orig_node,
- tt_global_entry->common.vid);
- batadv_tt_orig_list_entry_free_ref(orig_entry);
- }
+ hlist_for_each_entry_safe(orig_entry, safe, head, list)
+ batadv_tt_global_del_orig_entry(tt_global_entry, orig_entry);
spin_unlock_bh(&tt_global_entry->list_lock);
}
+/**
+ * batadv_tt_global_del_orig_node - remove orig_node from a global tt entry
+ * @bat_priv: the bat priv with all the soft interface information
+ * @tt_global_entry: the global entry to remove the orig_node from
+ * @orig_node: the originator announcing the client
+ * @message: message to append to the log on deletion
+ *
+ * Remove the given orig_node and its according orig_entry from the given
+ * global tt entry.
+ */
static void
-batadv_tt_global_del_orig_entry(struct batadv_priv *bat_priv,
- struct batadv_tt_global_entry *tt_global_entry,
- struct batadv_orig_node *orig_node,
- const char *message)
+batadv_tt_global_del_orig_node(struct batadv_priv *bat_priv,
+ struct batadv_tt_global_entry *tt_global_entry,
+ struct batadv_orig_node *orig_node,
+ const char *message)
{
struct hlist_head *head;
struct hlist_node *safe;
@@ -1603,10 +1656,8 @@ batadv_tt_global_del_orig_entry(struct batadv_priv *bat_priv,
orig_node->orig,
tt_global_entry->common.addr,
BATADV_PRINT_VID(vid), message);
- hlist_del_rcu(&orig_entry->list);
- batadv_tt_global_size_dec(orig_node,
- tt_global_entry->common.vid);
- batadv_tt_orig_list_entry_free_ref(orig_entry);
+ batadv_tt_global_del_orig_entry(tt_global_entry,
+ orig_entry);
}
}
spin_unlock_bh(&tt_global_entry->list_lock);
@@ -1648,8 +1699,8 @@ batadv_tt_global_del_roaming(struct batadv_priv *bat_priv,
/* there is another entry, we can simply delete this
* one and can still use the other one.
*/
- batadv_tt_global_del_orig_entry(bat_priv, tt_global_entry,
- orig_node, message);
+ batadv_tt_global_del_orig_node(bat_priv, tt_global_entry,
+ orig_node, message);
}
/**
@@ -1675,8 +1726,8 @@ static void batadv_tt_global_del(struct batadv_priv *bat_priv,
goto out;
if (!roaming) {
- batadv_tt_global_del_orig_entry(bat_priv, tt_global_entry,
- orig_node, message);
+ batadv_tt_global_del_orig_node(bat_priv, tt_global_entry,
+ orig_node, message);
if (hlist_empty(&tt_global_entry->orig_list))
batadv_tt_global_free(bat_priv, tt_global_entry,
@@ -1759,8 +1810,8 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
struct batadv_tt_global_entry,
common);
- batadv_tt_global_del_orig_entry(bat_priv, tt_global,
- orig_node, message);
+ batadv_tt_global_del_orig_node(bat_priv, tt_global,
+ orig_node, message);
if (hlist_empty(&tt_global->orig_list)) {
vid = tt_global->common.vid;
diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h
index 20a1d78..ad84d7b 100644
--- a/net/batman-adv/translation-table.h
+++ b/net/batman-adv/translation-table.h
@@ -29,6 +29,8 @@ int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset);
void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
int32_t match_vid, const char *message);
+int batadv_tt_global_hash_count(struct batadv_priv *bat_priv,
+ const uint8_t *addr, unsigned short vid);
struct batadv_orig_node *batadv_transtable_search(struct batadv_priv *bat_priv,
const uint8_t *src,
const uint8_t *addr,
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 96ee0d2..c28fc4a 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -696,6 +696,8 @@ struct batadv_softif_vlan {
* enabled
* @distributed_arp_table: bool indicating whether distributed ARP table is
* enabled
+ * @multicast_mode: Enable or disable multicast optimizations on this node's
+ * sender/originating side
* @gw_mode: gateway operation: off, client or server (see batadv_gw_modes)
* @gw_sel_class: gateway selection class (applies if gw_mode client)
* @orig_interval: OGM broadcast interval in milliseconds
@@ -746,6 +748,9 @@ struct batadv_priv {
#ifdef CONFIG_BATMAN_ADV_DAT
atomic_t distributed_arp_table;
#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ atomic_t multicast_mode;
+#endif
atomic_t gw_mode;
atomic_t gw_sel_class;
atomic_t orig_interval;
@@ -909,12 +914,14 @@ struct batadv_tt_local_entry {
* struct batadv_tt_global_entry - translation table global entry data
* @common: general translation table data
* @orig_list: list of orig nodes announcing this non-mesh client
+ * @orig_list_count: number of items in the orig_list
* @list_lock: lock protecting orig_list
* @roam_at: time at which TT_GLOBAL_ROAM was set
*/
struct batadv_tt_global_entry {
struct batadv_tt_common_entry common;
struct hlist_head orig_list;
+ atomic_t orig_list_count;
spinlock_t list_lock; /* protects orig_list */
unsigned long roam_at;
};
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread* [B.A.T.M.A.N.] [PATCH 11/16] batman-adv: Modified forwarding behaviour for multicast packets
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
With this patch a multicast packet is not always simply flooded anymore,
the behaviour for the following cases is changed to reduce
unnecessary overhead:
If all nodes within the horizon of a certain node have signalized
multicast listener announcement capability then an IPv6 multicast packet
with a destination of IPv6 link-local scope (excluding ff02::1) coming
from the upstream of this node...
* ...is dropped if there is no according multicast listener in the
translation table,
* ...is forwarded via unicast if there is a single node with interested
multicast listeners
* ...and otherwise still gets flooded.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
Documentation/ABI/testing/sysfs-class-net-mesh | 9 ++
net/batman-adv/multicast.c | 126 +++++++++++++++++++++++++
net/batman-adv/multicast.h | 25 +++++
net/batman-adv/send.c | 10 +-
net/batman-adv/send.h | 5 +
net/batman-adv/soft-interface.c | 20 +++-
net/batman-adv/sysfs.c | 6 ++
net/batman-adv/translation-table.c | 91 ++++++++++++++----
net/batman-adv/translation-table.h | 2 +
net/batman-adv/types.h | 7 ++
10 files changed, 275 insertions(+), 26 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-class-net-mesh b/Documentation/ABI/testing/sysfs-class-net-mesh
index 4793d3d..c464062 100644
--- a/Documentation/ABI/testing/sysfs-class-net-mesh
+++ b/Documentation/ABI/testing/sysfs-class-net-mesh
@@ -76,6 +76,15 @@ Description:
is used to classify clients as "isolated" by the
Extended Isolation feature.
+What: /sys/class/net/<mesh_iface>/mesh/multicast_mode
+Date: Feb 2014
+Contact: Linus Lüssing <linus.luessing@web.de>
+Description:
+ Indicates whether multicast optimizations are enabled
+ or disabled. If set to zero then all nodes in the
+ mesh are going to use classic flooding for any
+ multicast packet with no optimizations.
+
What: /sys/class/net/<mesh_iface>/mesh/network_coding
Date: Nov 2012
Contact: Martin Hundeboll <martin@hundeboll.net>
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index 3ba9a18..1d1627f 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -20,6 +20,7 @@
#include "originator.h"
#include "hard-interface.h"
#include "translation-table.h"
+#include "multicast.h"
/**
* batadv_mcast_mla_softif_get - get softif multicast listeners
@@ -247,6 +248,131 @@ out:
}
/**
+ * batadv_mcast_forw_mode_check_ipv6 - check for optimized forwarding potential
+ * @bat_priv: the bat priv with all the soft interface information
+ * @skb: the IPv6 packet to check
+ *
+ * Checks whether the given IPv6 packet has the potential to be forwarded with a
+ * mode more optimal than classic flooding.
+ *
+ * If so then returns 0. Otherwise -EINVAL is returned or -ENOMEM if we are out
+ * of memory.
+ */
+static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv,
+ struct sk_buff *skb)
+{
+ struct ipv6hdr *ip6hdr;
+
+ /* We might fail due to out-of-memory -> drop it */
+ if (!pskb_may_pull(skb, sizeof(struct ethhdr) + sizeof(*ip6hdr)))
+ return -ENOMEM;
+
+ ip6hdr = ipv6_hdr(skb);
+
+ /* TODO: Implement Multicast Router Discovery (RFC4286),
+ * then allow scope > link local, too
+ */
+ if (IPV6_ADDR_MC_SCOPE(&ip6hdr->daddr) != IPV6_ADDR_SCOPE_LINKLOCAL)
+ return -EINVAL;
+
+ /* link-local-all-nodes multicast listeners behind a bridge are
+ * not snoopable (see RFC4541, section 3, paragraph 3)
+ */
+ if (ipv6_addr_is_ll_all_nodes(&ip6hdr->daddr))
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * batadv_mcast_forw_mode_check - check for optimized forwarding potential
+ * @bat_priv: the bat priv with all the soft interface information
+ * @skb: the multicast frame to check
+ *
+ * Checks whether the given multicast ethernet frame has the potential to be
+ * forwarded with a mode more optimal than classic flooding.
+ *
+ * If so then returns 0. Otherwise -EINVAL is returned or -ENOMEM if we are out
+ * of memory.
+ */
+static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv,
+ struct sk_buff *skb)
+{
+ struct ethhdr *ethhdr = eth_hdr(skb);
+
+ if (!atomic_read(&bat_priv->multicast_mode))
+ return -EINVAL;
+
+ if (atomic_read(&bat_priv->mcast.num_disabled))
+ return -EINVAL;
+
+ switch (ntohs(ethhdr->h_proto)) {
+ case ETH_P_IPV6:
+ return batadv_mcast_forw_mode_check_ipv6(bat_priv, skb);
+ default:
+ return -EINVAL;
+ }
+}
+
+/**
+ * batadv_mcast_forw_tt_node_get - get a multicast tt node
+ * @bat_priv: the bat priv with all the soft interface information
+ * @ethhdr: the ether header containing the multicast destination
+ *
+ * Returns an orig_node matching the multicast address provided by ethhdr
+ * via a translation table lookup. This increases the returned nodes refcount.
+ */
+static struct batadv_orig_node *
+batadv_mcast_forw_tt_node_get(struct batadv_priv *bat_priv,
+ struct ethhdr *ethhdr)
+{
+ return batadv_transtable_search(bat_priv, ethhdr->h_source,
+ ethhdr->h_dest, BATADV_NO_FLAGS);
+}
+
+/**
+ * batadv_mcast_forw_mode - check on how to forward a multicast packet
+ * @bat_priv: the bat priv with all the soft interface information
+ * @skb: The multicast packet to check
+ * @orig: an originator to be set to forward the skb to
+ *
+ * Returns the forwarding mode as enum batadv_forw_mode and in case of
+ * BATADV_FORW_SINGLE set the orig to the single originator the skb
+ * should be forwarded to.
+ */
+enum batadv_forw_mode
+batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
+ struct batadv_orig_node **orig)
+{
+ struct ethhdr *ethhdr;
+ int ret, tt_count;
+
+ ret = batadv_mcast_forw_mode_check(bat_priv, skb);
+ if (ret == -ENOMEM)
+ return BATADV_FORW_NONE;
+ else if (ret < 0)
+ return BATADV_FORW_ALL;
+
+ ethhdr = eth_hdr(skb);
+
+ tt_count = batadv_tt_global_hash_count(bat_priv, ethhdr->h_dest,
+ BATADV_NO_FLAGS);
+
+ switch (tt_count) {
+ case 1:
+ *orig = batadv_mcast_forw_tt_node_get(bat_priv, ethhdr);
+ if (*orig)
+ return BATADV_FORW_SINGLE;
+
+ /* fall through */
+ case 0:
+ return BATADV_FORW_NONE;
+ default:
+ return BATADV_FORW_ALL;
+ }
+}
+
+/**
* batadv_mcast_tvlv_ogm_handler_v1 - process incoming multicast tvlv container
* @bat_priv: the bat priv with all the soft interface information
* @orig: the orig_node of the ogm
diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h
index c029eac..73b5d45 100644
--- a/net/batman-adv/multicast.h
+++ b/net/batman-adv/multicast.h
@@ -18,10 +18,28 @@
#ifndef _NET_BATMAN_ADV_MULTICAST_H_
#define _NET_BATMAN_ADV_MULTICAST_H_
+/**
+ * batadv_forw_mode - the way a packet should be forwarded as
+ * @BATADV_FORW_ALL: forward the packet to all nodes (currently via classic
+ * flooding)
+ * @BATADV_FORW_SINGLE: forward the packet to a single node (currently via the
+ * BATMAN unicast routing protocol)
+ * @BATADV_FORW_NONE: don't forward, drop it
+ */
+enum batadv_forw_mode {
+ BATADV_FORW_ALL,
+ BATADV_FORW_SINGLE,
+ BATADV_FORW_NONE,
+};
+
#ifdef CONFIG_BATMAN_ADV_MCAST
void batadv_mcast_mla_update(struct batadv_priv *bat_priv);
+enum batadv_forw_mode
+batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
+ struct batadv_orig_node **mcast_single_orig);
+
void batadv_mcast_init(struct batadv_priv *bat_priv);
void batadv_mcast_free(struct batadv_priv *bat_priv);
@@ -35,6 +53,13 @@ static inline void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
return;
}
+static inline enum batadv_forw_mode
+batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
+ struct batadv_orig_node **mcast_single_orig)
+{
+ return BATADV_FORW_ALL;
+}
+
static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
{
return 0;
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index ce163d5..8bee5e8 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -248,11 +248,11 @@ out:
*
* Returns NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
*/
-static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
- struct sk_buff *skb, int packet_type,
- int packet_subtype,
- struct batadv_orig_node *orig_node,
- unsigned short vid)
+int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
+ struct sk_buff *skb, int packet_type,
+ int packet_subtype,
+ struct batadv_orig_node *orig_node,
+ unsigned short vid)
{
struct ethhdr *ethhdr;
struct batadv_unicast_packet *unicast_packet;
diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h
index 31e8781..38d0ec1 100644
--- a/net/batman-adv/send.h
+++ b/net/batman-adv/send.h
@@ -36,6 +36,11 @@ bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
struct sk_buff *skb,
struct batadv_orig_node *orig_node,
int packet_subtype);
+int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
+ struct sk_buff *skb, int packet_type,
+ int packet_subtype,
+ struct batadv_orig_node *orig_node,
+ unsigned short vid);
int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
struct sk_buff *skb, int packet_type,
int packet_subtype, uint8_t *dst_hint,
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 8ff47b7..1a643fe6 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -32,6 +32,7 @@
#include <linux/ethtool.h>
#include <linux/etherdevice.h>
#include <linux/if_vlan.h>
+#include "multicast.h"
#include "bridge_loop_avoidance.h"
#include "network-coding.h"
@@ -170,6 +171,8 @@ static int batadv_interface_tx(struct sk_buff *skb,
unsigned short vid;
uint32_t seqno;
int gw_mode;
+ enum batadv_forw_mode forw_mode;
+ struct batadv_orig_node *mcast_single_orig = NULL;
if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
goto dropped;
@@ -247,9 +250,19 @@ static int batadv_interface_tx(struct sk_buff *skb,
* directed to a DHCP server
*/
goto dropped;
- }
send:
+ if (do_bcast && !is_broadcast_ether_addr(ethhdr->h_dest)) {
+ forw_mode = batadv_mcast_forw_mode(bat_priv, skb,
+ &mcast_single_orig);
+ if (forw_mode == BATADV_FORW_NONE)
+ goto dropped;
+
+ if (forw_mode == BATADV_FORW_SINGLE)
+ do_bcast = false;
+ }
+ }
+
batadv_skb_set_priority(skb, 0);
/* ethernet packet should be broadcasted */
@@ -301,6 +314,10 @@ send:
if (ret)
goto dropped;
ret = batadv_send_skb_via_gw(bat_priv, skb, vid);
+ } else if (mcast_single_orig) {
+ ret = batadv_send_skb_unicast(bat_priv, skb,
+ BATADV_UNICAST, 0,
+ mcast_single_orig, vid);
} else {
if (batadv_dat_snoop_outgoing_arp_request(bat_priv,
skb))
@@ -691,6 +708,7 @@ static int batadv_softif_init_late(struct net_device *dev)
#endif
#ifdef CONFIG_BATMAN_ADV_MCAST
bat_priv->mcast.flags = BATADV_NO_FLAGS;
+ atomic_set(&bat_priv->multicast_mode, 1);
atomic_set(&bat_priv->mcast.num_disabled, 0);
#endif
atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF);
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c
index e456bf6..1ebb0d9 100644
--- a/net/batman-adv/sysfs.c
+++ b/net/batman-adv/sysfs.c
@@ -539,6 +539,9 @@ BATADV_ATTR_SIF_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, BATADV_TQ_MAX_VALUE,
batadv_post_gw_reselect);
static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth,
batadv_store_gw_bwidth);
+#ifdef CONFIG_BATMAN_ADV_MCAST
+BATADV_ATTR_SIF_BOOL(multicast_mode, S_IRUGO | S_IWUSR, NULL);
+#endif
#ifdef CONFIG_BATMAN_ADV_DEBUG
BATADV_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, BATADV_DBG_ALL, NULL);
#endif
@@ -558,6 +561,9 @@ static struct batadv_attribute *batadv_mesh_attrs[] = {
#ifdef CONFIG_BATMAN_ADV_DAT
&batadv_attr_distributed_arp_table,
#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ &batadv_attr_multicast_mode,
+#endif
&batadv_attr_fragmentation,
&batadv_attr_routing_algo,
&batadv_attr_gw_mode,
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index f641dfe..d636bde 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -193,6 +193,31 @@ batadv_tt_global_entry_free_ref(struct batadv_tt_global_entry *tt_global_entry)
}
}
+/**
+ * batadv_tt_global_hash_count - count the number of orig entries
+ * @hash: hash table containing the tt entries
+ * @addr: the mac address of the client to count entries for
+ * @vid: VLAN identifier
+ *
+ * Return the number of originators advertising the given address/data
+ * (excluding ourself).
+ */
+int batadv_tt_global_hash_count(struct batadv_priv *bat_priv,
+ const uint8_t *addr, unsigned short vid)
+{
+ struct batadv_tt_global_entry *tt_global_entry;
+ int count;
+
+ tt_global_entry = batadv_tt_global_hash_find(bat_priv, addr, vid);
+ if (!tt_global_entry)
+ return 0;
+
+ count = atomic_read(&tt_global_entry->orig_list_count);
+ batadv_tt_global_entry_free_ref(tt_global_entry);
+
+ return count;
+}
+
static void batadv_tt_orig_list_entry_free_rcu(struct rcu_head *rcu)
{
struct batadv_tt_orig_list_entry *orig_entry;
@@ -1225,6 +1250,8 @@ batadv_tt_global_orig_entry_add(struct batadv_tt_global_entry *tt_global,
hlist_add_head_rcu(&orig_entry->list,
&tt_global->orig_list);
spin_unlock_bh(&tt_global->list_lock);
+ atomic_inc(&tt_global->orig_list_count);
+
out:
if (orig_entry)
batadv_tt_orig_list_entry_free_ref(orig_entry);
@@ -1298,6 +1325,7 @@ static bool batadv_tt_global_add(struct batadv_priv *bat_priv,
common->added_at = jiffies;
INIT_HLIST_HEAD(&tt_global_entry->orig_list);
+ atomic_set(&tt_global_entry->orig_list_count, 0);
spin_lock_init(&tt_global_entry->list_lock);
hash_added = batadv_hash_add(bat_priv->tt.global_hash,
@@ -1563,6 +1591,25 @@ out:
return 0;
}
+/**
+ * batadv_tt_global_del_orig_entry - remove and free an orig_entry
+ * @tt_global_entry: the global entry to remove the orig_entry from
+ * @orig_entry: the orig entry to remove and free
+ *
+ * Remove an orig_entry from its list in the given tt_global_entry and
+ * free this orig_entry afterwards.
+ */
+static void
+batadv_tt_global_del_orig_entry(struct batadv_tt_global_entry *tt_global_entry,
+ struct batadv_tt_orig_list_entry *orig_entry)
+{
+ batadv_tt_global_size_dec(orig_entry->orig_node,
+ tt_global_entry->common.vid);
+ atomic_dec(&tt_global_entry->orig_list_count);
+ hlist_del_rcu(&orig_entry->list);
+ batadv_tt_orig_list_entry_free_ref(orig_entry);
+}
+
/* deletes the orig list of a tt_global_entry */
static void
batadv_tt_global_del_orig_list(struct batadv_tt_global_entry *tt_global_entry)
@@ -1573,20 +1620,26 @@ batadv_tt_global_del_orig_list(struct batadv_tt_global_entry *tt_global_entry)
spin_lock_bh(&tt_global_entry->list_lock);
head = &tt_global_entry->orig_list;
- hlist_for_each_entry_safe(orig_entry, safe, head, list) {
- hlist_del_rcu(&orig_entry->list);
- batadv_tt_global_size_dec(orig_entry->orig_node,
- tt_global_entry->common.vid);
- batadv_tt_orig_list_entry_free_ref(orig_entry);
- }
+ hlist_for_each_entry_safe(orig_entry, safe, head, list)
+ batadv_tt_global_del_orig_entry(tt_global_entry, orig_entry);
spin_unlock_bh(&tt_global_entry->list_lock);
}
+/**
+ * batadv_tt_global_del_orig_node - remove orig_node from a global tt entry
+ * @bat_priv: the bat priv with all the soft interface information
+ * @tt_global_entry: the global entry to remove the orig_node from
+ * @orig_node: the originator announcing the client
+ * @message: message to append to the log on deletion
+ *
+ * Remove the given orig_node and its according orig_entry from the given
+ * global tt entry.
+ */
static void
-batadv_tt_global_del_orig_entry(struct batadv_priv *bat_priv,
- struct batadv_tt_global_entry *tt_global_entry,
- struct batadv_orig_node *orig_node,
- const char *message)
+batadv_tt_global_del_orig_node(struct batadv_priv *bat_priv,
+ struct batadv_tt_global_entry *tt_global_entry,
+ struct batadv_orig_node *orig_node,
+ const char *message)
{
struct hlist_head *head;
struct hlist_node *safe;
@@ -1603,10 +1656,8 @@ batadv_tt_global_del_orig_entry(struct batadv_priv *bat_priv,
orig_node->orig,
tt_global_entry->common.addr,
BATADV_PRINT_VID(vid), message);
- hlist_del_rcu(&orig_entry->list);
- batadv_tt_global_size_dec(orig_node,
- tt_global_entry->common.vid);
- batadv_tt_orig_list_entry_free_ref(orig_entry);
+ batadv_tt_global_del_orig_entry(tt_global_entry,
+ orig_entry);
}
}
spin_unlock_bh(&tt_global_entry->list_lock);
@@ -1648,8 +1699,8 @@ batadv_tt_global_del_roaming(struct batadv_priv *bat_priv,
/* there is another entry, we can simply delete this
* one and can still use the other one.
*/
- batadv_tt_global_del_orig_entry(bat_priv, tt_global_entry,
- orig_node, message);
+ batadv_tt_global_del_orig_node(bat_priv, tt_global_entry,
+ orig_node, message);
}
/**
@@ -1675,8 +1726,8 @@ static void batadv_tt_global_del(struct batadv_priv *bat_priv,
goto out;
if (!roaming) {
- batadv_tt_global_del_orig_entry(bat_priv, tt_global_entry,
- orig_node, message);
+ batadv_tt_global_del_orig_node(bat_priv, tt_global_entry,
+ orig_node, message);
if (hlist_empty(&tt_global_entry->orig_list))
batadv_tt_global_free(bat_priv, tt_global_entry,
@@ -1759,8 +1810,8 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
struct batadv_tt_global_entry,
common);
- batadv_tt_global_del_orig_entry(bat_priv, tt_global,
- orig_node, message);
+ batadv_tt_global_del_orig_node(bat_priv, tt_global,
+ orig_node, message);
if (hlist_empty(&tt_global->orig_list)) {
vid = tt_global->common.vid;
diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h
index 20a1d78..ad84d7b 100644
--- a/net/batman-adv/translation-table.h
+++ b/net/batman-adv/translation-table.h
@@ -29,6 +29,8 @@ int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset);
void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node,
int32_t match_vid, const char *message);
+int batadv_tt_global_hash_count(struct batadv_priv *bat_priv,
+ const uint8_t *addr, unsigned short vid);
struct batadv_orig_node *batadv_transtable_search(struct batadv_priv *bat_priv,
const uint8_t *src,
const uint8_t *addr,
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 96ee0d2..c28fc4a 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -696,6 +696,8 @@ struct batadv_softif_vlan {
* enabled
* @distributed_arp_table: bool indicating whether distributed ARP table is
* enabled
+ * @multicast_mode: Enable or disable multicast optimizations on this node's
+ * sender/originating side
* @gw_mode: gateway operation: off, client or server (see batadv_gw_modes)
* @gw_sel_class: gateway selection class (applies if gw_mode client)
* @orig_interval: OGM broadcast interval in milliseconds
@@ -746,6 +748,9 @@ struct batadv_priv {
#ifdef CONFIG_BATMAN_ADV_DAT
atomic_t distributed_arp_table;
#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ atomic_t multicast_mode;
+#endif
atomic_t gw_mode;
atomic_t gw_sel_class;
atomic_t orig_interval;
@@ -909,12 +914,14 @@ struct batadv_tt_local_entry {
* struct batadv_tt_global_entry - translation table global entry data
* @common: general translation table data
* @orig_list: list of orig nodes announcing this non-mesh client
+ * @orig_list_count: number of items in the orig_list
* @list_lock: lock protecting orig_list
* @roam_at: time at which TT_GLOBAL_ROAM was set
*/
struct batadv_tt_global_entry {
struct batadv_tt_common_entry common;
struct hlist_head orig_list;
+ atomic_t orig_list_count;
spinlock_t list_lock; /* protects orig_list */
unsigned long roam_at;
};
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 12/16] batman-adv: Add IPv4 link-local/IPv6-ll-all-nodes multicast support
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: netdev, b.a.t.m.a.n, Linus Lüssing, Marek Lindner,
Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
With this patch a node may additionally perform the dropping or
unicasting behaviour for a link-local IPv4 and link-local-all-nodes
IPv6 multicast packet, too.
The extra counter and BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag is needed
because with a future bridge snooping support integration a node with a
bridge on top of its soft interface is not able to reliably detect its
multicast listeners for IPv4 link-local and the IPv6
link-local-all-nodes addresses anymore (see RFC4541, section 2.1.2.2
and section 3).
Even though this new flag does make "no difference" now, it'll ensure
a seamless integration of multicast bridge support without needing to
break compatibility later.
Also note, that even with multicast bridge support it won't be possible
to optimize 224.0.0.x and ff02::1 towards nodes with bridges, they will
always receive these ranges.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/main.c | 6 ++
net/batman-adv/main.h | 1 +
net/batman-adv/multicast.c | 135 +++++++++++++++++++++++++++++++++++++---
net/batman-adv/packet.h | 9 +++
net/batman-adv/soft-interface.c | 1 +
net/batman-adv/types.h | 12 ++++
6 files changed, 156 insertions(+), 8 deletions(-)
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 8f11b67..57b09fa 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -111,6 +111,9 @@ int batadv_mesh_init(struct net_device *soft_iface)
spin_lock_init(&bat_priv->tt.last_changeset_lock);
spin_lock_init(&bat_priv->tt.commit_lock);
spin_lock_init(&bat_priv->gw.list_lock);
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ spin_lock_init(&bat_priv->mcast.want_lists_lock);
+#endif
spin_lock_init(&bat_priv->tvlv.container_list_lock);
spin_lock_init(&bat_priv->tvlv.handler_list_lock);
spin_lock_init(&bat_priv->softif_vlan_list_lock);
@@ -118,6 +121,9 @@ int batadv_mesh_init(struct net_device *soft_iface)
INIT_HLIST_HEAD(&bat_priv->forw_bat_list);
INIT_HLIST_HEAD(&bat_priv->forw_bcast_list);
INIT_HLIST_HEAD(&bat_priv->gw.list);
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ INIT_HLIST_HEAD(&bat_priv->mcast.want_all_unsnoopables_list);
+#endif
INIT_LIST_HEAD(&bat_priv->tt.changes_list);
INIT_LIST_HEAD(&bat_priv->tt.req_list);
INIT_LIST_HEAD(&bat_priv->tt.roam_list);
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index aa4f73a..515dce7 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -177,6 +177,7 @@ enum batadv_uev_type {
#include <linux/slab.h>
#include <net/sock.h> /* struct sock */
#include <net/addrconf.h> /* ipv6 address stuff */
+#include <linux/ip.h>
#include <net/rtnetlink.h>
#include <linux/jiffies.h>
#include <linux/seq_file.h>
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index 1d1627f..a4804fa 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -248,9 +248,48 @@ out:
}
/**
+ * batadv_mcast_forw_mode_check_ipv4 - check for optimized forwarding potential
+ * @bat_priv: the bat priv with all the soft interface information
+ * @skb: the IPv4 packet to check
+ * @is_unsnoopable: stores whether the destination is snoopable
+ *
+ * Checks whether the given IPv4 packet has the potential to be forwarded with a
+ * mode more optimal than classic flooding.
+ *
+ * If so then returns 0. Otherwise -EINVAL is returned or -ENOMEM in case of
+ * memory allocation failure.
+ */
+static int batadv_mcast_forw_mode_check_ipv4(struct batadv_priv *bat_priv,
+ struct sk_buff *skb,
+ bool *is_unsnoopable)
+{
+ struct iphdr *iphdr;
+
+ /* We might fail due to out-of-memory -> drop it */
+ if (!pskb_may_pull(skb, sizeof(struct ethhdr) + sizeof(*iphdr)))
+ return -ENOMEM;
+
+ iphdr = ip_hdr(skb);
+
+ /* TODO: Implement Multicast Router Discovery (RFC4286),
+ * then allow scope > link local, too
+ */
+ if (!ipv4_is_local_multicast(iphdr->daddr))
+ return -EINVAL;
+
+ /* link-local multicast listeners behind a bridge are
+ * not snoopable (see RFC4541, section 2.1.2.2)
+ */
+ *is_unsnoopable = true;
+
+ return 0;
+}
+
+/**
* batadv_mcast_forw_mode_check_ipv6 - check for optimized forwarding potential
* @bat_priv: the bat priv with all the soft interface information
* @skb: the IPv6 packet to check
+ * @is_unsnoopable: stores whether the destination is snoopable
*
* Checks whether the given IPv6 packet has the potential to be forwarded with a
* mode more optimal than classic flooding.
@@ -259,7 +298,8 @@ out:
* of memory.
*/
static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv,
- struct sk_buff *skb)
+ struct sk_buff *skb,
+ bool *is_unsnoopable)
{
struct ipv6hdr *ip6hdr;
@@ -279,7 +319,7 @@ static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv,
* not snoopable (see RFC4541, section 3, paragraph 3)
*/
if (ipv6_addr_is_ll_all_nodes(&ip6hdr->daddr))
- return -EINVAL;
+ *is_unsnoopable = true;
return 0;
}
@@ -288,6 +328,7 @@ static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv,
* batadv_mcast_forw_mode_check - check for optimized forwarding potential
* @bat_priv: the bat priv with all the soft interface information
* @skb: the multicast frame to check
+ * @is_unsnoopable: stores whether the destination is snoopable
*
* Checks whether the given multicast ethernet frame has the potential to be
* forwarded with a mode more optimal than classic flooding.
@@ -296,7 +337,8 @@ static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv,
* of memory.
*/
static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv,
- struct sk_buff *skb)
+ struct sk_buff *skb,
+ bool *is_unsnoopable)
{
struct ethhdr *ethhdr = eth_hdr(skb);
@@ -307,8 +349,12 @@ static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv,
return -EINVAL;
switch (ntohs(ethhdr->h_proto)) {
+ case ETH_P_IP:
+ return batadv_mcast_forw_mode_check_ipv4(bat_priv, skb,
+ is_unsnoopable);
case ETH_P_IPV6:
- return batadv_mcast_forw_mode_check_ipv6(bat_priv, skb);
+ return batadv_mcast_forw_mode_check_ipv6(bat_priv, skb,
+ is_unsnoopable);
default:
return -EINVAL;
}
@@ -331,6 +377,33 @@ batadv_mcast_forw_tt_node_get(struct batadv_priv *bat_priv,
}
/**
+ * batadv_mcast_want_forw_unsnoop_node_get - get a node with an unsnoopable flag
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Returns an orig_node which has the BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag
+ * set and increases its refcount.
+ */
+static struct batadv_orig_node *
+batadv_mcast_forw_unsnoop_node_get(struct batadv_priv *bat_priv)
+{
+ struct batadv_orig_node *tmp_orig_node, *orig_node = NULL;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(tmp_orig_node,
+ &bat_priv->mcast.want_all_unsnoopables_list,
+ mcast_want_all_unsnoopables_node) {
+ if (!atomic_inc_not_zero(&orig_node->refcount))
+ continue;
+
+ orig_node = tmp_orig_node;
+ break;
+ }
+ rcu_read_unlock();
+
+ return orig_node;
+}
+
+/**
* batadv_mcast_forw_mode - check on how to forward a multicast packet
* @bat_priv: the bat priv with all the soft interface information
* @skb: The multicast packet to check
@@ -344,10 +417,11 @@ enum batadv_forw_mode
batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
struct batadv_orig_node **orig)
{
+ int ret, tt_count, unsnoop_count, total_count;
+ bool is_unsnoopable = false;
struct ethhdr *ethhdr;
- int ret, tt_count;
- ret = batadv_mcast_forw_mode_check(bat_priv, skb);
+ ret = batadv_mcast_forw_mode_check(bat_priv, skb, &is_unsnoopable);
if (ret == -ENOMEM)
return BATADV_FORW_NONE;
else if (ret < 0)
@@ -357,10 +431,18 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
tt_count = batadv_tt_global_hash_count(bat_priv, ethhdr->h_dest,
BATADV_NO_FLAGS);
+ unsnoop_count = !is_unsnoopable ? 0 :
+ atomic_read(&bat_priv->mcast.num_want_all_unsnoopables);
- switch (tt_count) {
+ total_count = tt_count + unsnoop_count;
+
+ switch (total_count) {
case 1:
- *orig = batadv_mcast_forw_tt_node_get(bat_priv, ethhdr);
+ if (tt_count)
+ *orig = batadv_mcast_forw_tt_node_get(bat_priv, ethhdr);
+ else if (unsnoop_count)
+ *orig = batadv_mcast_forw_unsnoop_node_get(bat_priv);
+
if (*orig)
return BATADV_FORW_SINGLE;
@@ -373,6 +455,39 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
}
/**
+ * batadv_mcast_want_unsnoop_update - update unsnoop counter and list
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig: the orig_node which multicast state might have changed of
+ * @mcast_flags: flags indicating the new multicast state
+ *
+ * If the BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag of this originator,
+ * orig, has toggled then this method updates counter and list accordingly.
+ */
+static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t mcast_flags)
+{
+ /* switched from flag unset to set */
+ if (mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES &&
+ !(orig->mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES)) {
+ atomic_inc(&bat_priv->mcast.num_want_all_unsnoopables);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_add_head_rcu(&orig->mcast_want_all_unsnoopables_node,
+ &bat_priv->mcast.want_all_unsnoopables_list);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ /* switched from flag set to unset */
+ } else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) &&
+ orig->mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) {
+ atomic_dec(&bat_priv->mcast.num_want_all_unsnoopables);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_del_rcu(&orig->mcast_want_all_unsnoopables_node);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ }
+}
+
+/**
* batadv_mcast_tvlv_ogm_handler_v1 - process incoming multicast tvlv container
* @bat_priv: the bat priv with all the soft interface information
* @orig: the orig_node of the ogm
@@ -416,6 +531,8 @@ static void batadv_mcast_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
(tvlv_value_len >= sizeof(mcast_flags)))
mcast_flags = *(uint8_t *)tvlv_value;
+ batadv_mcast_want_unsnoop_update(bat_priv, orig, mcast_flags);
+
orig->mcast_flags = mcast_flags;
}
@@ -452,4 +569,6 @@ void batadv_mcast_purge_orig(struct batadv_orig_node *orig)
if (!(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST))
atomic_dec(&bat_priv->mcast.num_disabled);
+
+ batadv_mcast_want_unsnoop_update(bat_priv, orig, BATADV_NO_FLAGS);
}
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index e8c483d..d061e26 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -89,6 +89,15 @@ enum batadv_icmp_packettype {
BATADV_PARAMETER_PROBLEM = 12,
};
+/**
+ * enum batadv_mcast_flags - flags for multicast capabilities and settings
+ * @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for
+ * 224.0.0.0/24 or ff02::1
+ */
+enum batadv_mcast_flags {
+ BATADV_MCAST_WANT_ALL_UNSNOOPABLES = BIT(0),
+};
+
/* tt data subtypes */
#define BATADV_TT_DATA_TYPE_MASK 0x0F
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 1a643fe6..db6feca 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -710,6 +710,7 @@ static int batadv_softif_init_late(struct net_device *dev)
bat_priv->mcast.flags = BATADV_NO_FLAGS;
atomic_set(&bat_priv->multicast_mode, 1);
atomic_set(&bat_priv->mcast.num_disabled, 0);
+ atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0);
#endif
atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF);
atomic_set(&bat_priv->gw_sel_class, 20);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index c28fc4a..1a674cb 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -205,6 +205,8 @@ struct batadv_orig_bat_iv {
* @last_seen: time when last packet from this node was received
* @bcast_seqno_reset: time when the broadcast seqno window was reset
* @mcast_flags: multicast flags announced by the orig node
+ * @mcast_want_all_unsnoop_node: a list node for the
+ * mcast.want_all_unsnoopables list
* @capabilities: announced capabilities of this originator
* @capa_initialized: bitfield to remember whether a capability was initialized
* @last_ttvn: last seen translation table version number
@@ -249,6 +251,7 @@ struct batadv_orig_node {
unsigned long bcast_seqno_reset;
#ifdef CONFIG_BATMAN_ADV_MCAST
uint8_t mcast_flags;
+ struct hlist_node mcast_want_all_unsnoopables_node;
#endif
uint8_t capabilities;
uint8_t capa_initialized;
@@ -619,15 +622,24 @@ struct batadv_priv_dat {
/**
* struct batadv_priv_mcast - per mesh interface mcast data
* @mla_list: list of multicast addresses we are currently announcing via TT
+ * @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable
+ * multicast traffic
* @flags: the flags we have last sent in our mcast tvlv
* @enabled: whether the multicast tvlv is currently enabled
* @num_disabled: number of nodes that have no mcast tvlv
+ * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic
+ * @want_lists_lock: lock for protecting modifications to mcast want lists
+ * (traversals are rcu-locked)
*/
struct batadv_priv_mcast {
struct hlist_head mla_list;
+ struct hlist_head want_all_unsnoopables_list;
uint8_t flags;
bool enabled;
atomic_t num_disabled;
+ atomic_t num_want_all_unsnoopables;
+ /* protects want_all_unsnoopables_list */
+ spinlock_t want_lists_lock;
};
#endif
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread* [B.A.T.M.A.N.] [PATCH 12/16] batman-adv: Add IPv4 link-local/IPv6-ll-all-nodes multicast support
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
With this patch a node may additionally perform the dropping or
unicasting behaviour for a link-local IPv4 and link-local-all-nodes
IPv6 multicast packet, too.
The extra counter and BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag is needed
because with a future bridge snooping support integration a node with a
bridge on top of its soft interface is not able to reliably detect its
multicast listeners for IPv4 link-local and the IPv6
link-local-all-nodes addresses anymore (see RFC4541, section 2.1.2.2
and section 3).
Even though this new flag does make "no difference" now, it'll ensure
a seamless integration of multicast bridge support without needing to
break compatibility later.
Also note, that even with multicast bridge support it won't be possible
to optimize 224.0.0.x and ff02::1 towards nodes with bridges, they will
always receive these ranges.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/main.c | 6 ++
net/batman-adv/main.h | 1 +
net/batman-adv/multicast.c | 135 +++++++++++++++++++++++++++++++++++++---
net/batman-adv/packet.h | 9 +++
net/batman-adv/soft-interface.c | 1 +
net/batman-adv/types.h | 12 ++++
6 files changed, 156 insertions(+), 8 deletions(-)
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 8f11b67..57b09fa 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -111,6 +111,9 @@ int batadv_mesh_init(struct net_device *soft_iface)
spin_lock_init(&bat_priv->tt.last_changeset_lock);
spin_lock_init(&bat_priv->tt.commit_lock);
spin_lock_init(&bat_priv->gw.list_lock);
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ spin_lock_init(&bat_priv->mcast.want_lists_lock);
+#endif
spin_lock_init(&bat_priv->tvlv.container_list_lock);
spin_lock_init(&bat_priv->tvlv.handler_list_lock);
spin_lock_init(&bat_priv->softif_vlan_list_lock);
@@ -118,6 +121,9 @@ int batadv_mesh_init(struct net_device *soft_iface)
INIT_HLIST_HEAD(&bat_priv->forw_bat_list);
INIT_HLIST_HEAD(&bat_priv->forw_bcast_list);
INIT_HLIST_HEAD(&bat_priv->gw.list);
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ INIT_HLIST_HEAD(&bat_priv->mcast.want_all_unsnoopables_list);
+#endif
INIT_LIST_HEAD(&bat_priv->tt.changes_list);
INIT_LIST_HEAD(&bat_priv->tt.req_list);
INIT_LIST_HEAD(&bat_priv->tt.roam_list);
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index aa4f73a..515dce7 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -177,6 +177,7 @@ enum batadv_uev_type {
#include <linux/slab.h>
#include <net/sock.h> /* struct sock */
#include <net/addrconf.h> /* ipv6 address stuff */
+#include <linux/ip.h>
#include <net/rtnetlink.h>
#include <linux/jiffies.h>
#include <linux/seq_file.h>
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index 1d1627f..a4804fa 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -248,9 +248,48 @@ out:
}
/**
+ * batadv_mcast_forw_mode_check_ipv4 - check for optimized forwarding potential
+ * @bat_priv: the bat priv with all the soft interface information
+ * @skb: the IPv4 packet to check
+ * @is_unsnoopable: stores whether the destination is snoopable
+ *
+ * Checks whether the given IPv4 packet has the potential to be forwarded with a
+ * mode more optimal than classic flooding.
+ *
+ * If so then returns 0. Otherwise -EINVAL is returned or -ENOMEM in case of
+ * memory allocation failure.
+ */
+static int batadv_mcast_forw_mode_check_ipv4(struct batadv_priv *bat_priv,
+ struct sk_buff *skb,
+ bool *is_unsnoopable)
+{
+ struct iphdr *iphdr;
+
+ /* We might fail due to out-of-memory -> drop it */
+ if (!pskb_may_pull(skb, sizeof(struct ethhdr) + sizeof(*iphdr)))
+ return -ENOMEM;
+
+ iphdr = ip_hdr(skb);
+
+ /* TODO: Implement Multicast Router Discovery (RFC4286),
+ * then allow scope > link local, too
+ */
+ if (!ipv4_is_local_multicast(iphdr->daddr))
+ return -EINVAL;
+
+ /* link-local multicast listeners behind a bridge are
+ * not snoopable (see RFC4541, section 2.1.2.2)
+ */
+ *is_unsnoopable = true;
+
+ return 0;
+}
+
+/**
* batadv_mcast_forw_mode_check_ipv6 - check for optimized forwarding potential
* @bat_priv: the bat priv with all the soft interface information
* @skb: the IPv6 packet to check
+ * @is_unsnoopable: stores whether the destination is snoopable
*
* Checks whether the given IPv6 packet has the potential to be forwarded with a
* mode more optimal than classic flooding.
@@ -259,7 +298,8 @@ out:
* of memory.
*/
static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv,
- struct sk_buff *skb)
+ struct sk_buff *skb,
+ bool *is_unsnoopable)
{
struct ipv6hdr *ip6hdr;
@@ -279,7 +319,7 @@ static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv,
* not snoopable (see RFC4541, section 3, paragraph 3)
*/
if (ipv6_addr_is_ll_all_nodes(&ip6hdr->daddr))
- return -EINVAL;
+ *is_unsnoopable = true;
return 0;
}
@@ -288,6 +328,7 @@ static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv,
* batadv_mcast_forw_mode_check - check for optimized forwarding potential
* @bat_priv: the bat priv with all the soft interface information
* @skb: the multicast frame to check
+ * @is_unsnoopable: stores whether the destination is snoopable
*
* Checks whether the given multicast ethernet frame has the potential to be
* forwarded with a mode more optimal than classic flooding.
@@ -296,7 +337,8 @@ static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv,
* of memory.
*/
static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv,
- struct sk_buff *skb)
+ struct sk_buff *skb,
+ bool *is_unsnoopable)
{
struct ethhdr *ethhdr = eth_hdr(skb);
@@ -307,8 +349,12 @@ static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv,
return -EINVAL;
switch (ntohs(ethhdr->h_proto)) {
+ case ETH_P_IP:
+ return batadv_mcast_forw_mode_check_ipv4(bat_priv, skb,
+ is_unsnoopable);
case ETH_P_IPV6:
- return batadv_mcast_forw_mode_check_ipv6(bat_priv, skb);
+ return batadv_mcast_forw_mode_check_ipv6(bat_priv, skb,
+ is_unsnoopable);
default:
return -EINVAL;
}
@@ -331,6 +377,33 @@ batadv_mcast_forw_tt_node_get(struct batadv_priv *bat_priv,
}
/**
+ * batadv_mcast_want_forw_unsnoop_node_get - get a node with an unsnoopable flag
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Returns an orig_node which has the BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag
+ * set and increases its refcount.
+ */
+static struct batadv_orig_node *
+batadv_mcast_forw_unsnoop_node_get(struct batadv_priv *bat_priv)
+{
+ struct batadv_orig_node *tmp_orig_node, *orig_node = NULL;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(tmp_orig_node,
+ &bat_priv->mcast.want_all_unsnoopables_list,
+ mcast_want_all_unsnoopables_node) {
+ if (!atomic_inc_not_zero(&orig_node->refcount))
+ continue;
+
+ orig_node = tmp_orig_node;
+ break;
+ }
+ rcu_read_unlock();
+
+ return orig_node;
+}
+
+/**
* batadv_mcast_forw_mode - check on how to forward a multicast packet
* @bat_priv: the bat priv with all the soft interface information
* @skb: The multicast packet to check
@@ -344,10 +417,11 @@ enum batadv_forw_mode
batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
struct batadv_orig_node **orig)
{
+ int ret, tt_count, unsnoop_count, total_count;
+ bool is_unsnoopable = false;
struct ethhdr *ethhdr;
- int ret, tt_count;
- ret = batadv_mcast_forw_mode_check(bat_priv, skb);
+ ret = batadv_mcast_forw_mode_check(bat_priv, skb, &is_unsnoopable);
if (ret == -ENOMEM)
return BATADV_FORW_NONE;
else if (ret < 0)
@@ -357,10 +431,18 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
tt_count = batadv_tt_global_hash_count(bat_priv, ethhdr->h_dest,
BATADV_NO_FLAGS);
+ unsnoop_count = !is_unsnoopable ? 0 :
+ atomic_read(&bat_priv->mcast.num_want_all_unsnoopables);
- switch (tt_count) {
+ total_count = tt_count + unsnoop_count;
+
+ switch (total_count) {
case 1:
- *orig = batadv_mcast_forw_tt_node_get(bat_priv, ethhdr);
+ if (tt_count)
+ *orig = batadv_mcast_forw_tt_node_get(bat_priv, ethhdr);
+ else if (unsnoop_count)
+ *orig = batadv_mcast_forw_unsnoop_node_get(bat_priv);
+
if (*orig)
return BATADV_FORW_SINGLE;
@@ -373,6 +455,39 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
}
/**
+ * batadv_mcast_want_unsnoop_update - update unsnoop counter and list
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig: the orig_node which multicast state might have changed of
+ * @mcast_flags: flags indicating the new multicast state
+ *
+ * If the BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag of this originator,
+ * orig, has toggled then this method updates counter and list accordingly.
+ */
+static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t mcast_flags)
+{
+ /* switched from flag unset to set */
+ if (mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES &&
+ !(orig->mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES)) {
+ atomic_inc(&bat_priv->mcast.num_want_all_unsnoopables);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_add_head_rcu(&orig->mcast_want_all_unsnoopables_node,
+ &bat_priv->mcast.want_all_unsnoopables_list);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ /* switched from flag set to unset */
+ } else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) &&
+ orig->mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) {
+ atomic_dec(&bat_priv->mcast.num_want_all_unsnoopables);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_del_rcu(&orig->mcast_want_all_unsnoopables_node);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ }
+}
+
+/**
* batadv_mcast_tvlv_ogm_handler_v1 - process incoming multicast tvlv container
* @bat_priv: the bat priv with all the soft interface information
* @orig: the orig_node of the ogm
@@ -416,6 +531,8 @@ static void batadv_mcast_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
(tvlv_value_len >= sizeof(mcast_flags)))
mcast_flags = *(uint8_t *)tvlv_value;
+ batadv_mcast_want_unsnoop_update(bat_priv, orig, mcast_flags);
+
orig->mcast_flags = mcast_flags;
}
@@ -452,4 +569,6 @@ void batadv_mcast_purge_orig(struct batadv_orig_node *orig)
if (!(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST))
atomic_dec(&bat_priv->mcast.num_disabled);
+
+ batadv_mcast_want_unsnoop_update(bat_priv, orig, BATADV_NO_FLAGS);
}
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index e8c483d..d061e26 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -89,6 +89,15 @@ enum batadv_icmp_packettype {
BATADV_PARAMETER_PROBLEM = 12,
};
+/**
+ * enum batadv_mcast_flags - flags for multicast capabilities and settings
+ * @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for
+ * 224.0.0.0/24 or ff02::1
+ */
+enum batadv_mcast_flags {
+ BATADV_MCAST_WANT_ALL_UNSNOOPABLES = BIT(0),
+};
+
/* tt data subtypes */
#define BATADV_TT_DATA_TYPE_MASK 0x0F
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 1a643fe6..db6feca 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -710,6 +710,7 @@ static int batadv_softif_init_late(struct net_device *dev)
bat_priv->mcast.flags = BATADV_NO_FLAGS;
atomic_set(&bat_priv->multicast_mode, 1);
atomic_set(&bat_priv->mcast.num_disabled, 0);
+ atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0);
#endif
atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF);
atomic_set(&bat_priv->gw_sel_class, 20);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index c28fc4a..1a674cb 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -205,6 +205,8 @@ struct batadv_orig_bat_iv {
* @last_seen: time when last packet from this node was received
* @bcast_seqno_reset: time when the broadcast seqno window was reset
* @mcast_flags: multicast flags announced by the orig node
+ * @mcast_want_all_unsnoop_node: a list node for the
+ * mcast.want_all_unsnoopables list
* @capabilities: announced capabilities of this originator
* @capa_initialized: bitfield to remember whether a capability was initialized
* @last_ttvn: last seen translation table version number
@@ -249,6 +251,7 @@ struct batadv_orig_node {
unsigned long bcast_seqno_reset;
#ifdef CONFIG_BATMAN_ADV_MCAST
uint8_t mcast_flags;
+ struct hlist_node mcast_want_all_unsnoopables_node;
#endif
uint8_t capabilities;
uint8_t capa_initialized;
@@ -619,15 +622,24 @@ struct batadv_priv_dat {
/**
* struct batadv_priv_mcast - per mesh interface mcast data
* @mla_list: list of multicast addresses we are currently announcing via TT
+ * @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable
+ * multicast traffic
* @flags: the flags we have last sent in our mcast tvlv
* @enabled: whether the multicast tvlv is currently enabled
* @num_disabled: number of nodes that have no mcast tvlv
+ * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic
+ * @want_lists_lock: lock for protecting modifications to mcast want lists
+ * (traversals are rcu-locked)
*/
struct batadv_priv_mcast {
struct hlist_head mla_list;
+ struct hlist_head want_all_unsnoopables_list;
uint8_t flags;
bool enabled;
atomic_t num_disabled;
+ atomic_t num_want_all_unsnoopables;
+ /* protects want_all_unsnoopables_list */
+ spinlock_t want_lists_lock;
};
#endif
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 13/16] batman-adv: Send multicast packets to nodes with a WANT_ALL flag
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem
Cc: netdev, b.a.t.m.a.n, Linus Lüssing, Marek Lindner,
Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
With this patch a node sends IPv4 multicast packets to nodes which
have a BATADV_MCAST_WANT_ALL_IPV4 flag set and IPv6 multicast packets
to nodes which have a BATADV_MCAST_WANT_ALL_IPV6 flag set, too.
Why is this needed? There are scenarios involving bridges where
multicast report snooping and multicast TT announcements are not
sufficient, which would lead to packet loss for some nodes otherwise:
MLDv1 and IGMPv1/IGMPv2 have a suppression mechanism
for multicast listener reports. When we have an MLDv1/IGMPv1/IGMPv2
querier behind a bridge then our snooping bridge is potentially not
going to see any reports even though listeners exist because according
to RFC4541 such reports are only forwarded to multicast routers:
-----------------------------------------------------------
---------------
{Querier}---|Snoop. Switch|----{Listener}
---------------
\ ^
-------
| br0 | < ???
-------
\
_-~---~_
_-~/ ~-_
~ batman-adv \-----{Sender}
\~_ cloud ~/
-~~__-__-~_/
I) MLDv1 Query: {Querier} -> flooded
II) MLDv1 Report: {Listener} -> {Querier}
-> br0 cannot detect the {Listener}
=> Packets from {Sender} need to be forwarded to all
detected listeners and MLDv1/IGMPv1/IGMPv2 queriers.
-----------------------------------------------------------
Note that we do not need to explicitly forward to MLDv2/IGMPv3 queriers,
because these protocols have no report suppression: A bridge has no
trouble detecting MLDv2/IGMPv3 listeners.
Even though we do not support bridges yet we need to provide the
according infrastructure already to not break compatibility later.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/main.c | 2 +
net/batman-adv/multicast.c | 178 +++++++++++++++++++++++++++++++++++++++-
net/batman-adv/packet.h | 4 +
net/batman-adv/send.c | 1 +
net/batman-adv/soft-interface.c | 2 +
net/batman-adv/types.h | 14 +++-
6 files changed, 198 insertions(+), 3 deletions(-)
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 57b09fa..d1183e8 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -123,6 +123,8 @@ int batadv_mesh_init(struct net_device *soft_iface)
INIT_HLIST_HEAD(&bat_priv->gw.list);
#ifdef CONFIG_BATMAN_ADV_MCAST
INIT_HLIST_HEAD(&bat_priv->mcast.want_all_unsnoopables_list);
+ INIT_HLIST_HEAD(&bat_priv->mcast.want_all_ipv4_list);
+ INIT_HLIST_HEAD(&bat_priv->mcast.want_all_ipv6_list);
#endif
INIT_LIST_HEAD(&bat_priv->tt.changes_list);
INIT_LIST_HEAD(&bat_priv->tt.req_list);
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index a4804fa..8c7ca81 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -361,6 +361,29 @@ static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv,
}
/**
+ * batadv_mcast_want_all_ip_count - count nodes with unspecific mcast interest
+ * @bat_priv: the bat priv with all the soft interface information
+ * @ethhdr: ethernet header of a packet
+ *
+ * Returns the number of nodes which want all IPv4 multicast traffic if the
+ * given ethhdr is from an IPv4 packet or the number of nodes which want all
+ * IPv6 traffic if it matches an IPv6 packet.
+ */
+static int batadv_mcast_forw_want_all_ip_count(struct batadv_priv *bat_priv,
+ struct ethhdr *ethhdr)
+{
+ switch (ntohs(ethhdr->h_proto)) {
+ case ETH_P_IP:
+ return atomic_read(&bat_priv->mcast.num_want_all_ipv4);
+ case ETH_P_IPV6:
+ return atomic_read(&bat_priv->mcast.num_want_all_ipv6);
+ default:
+ /* we shouldn't be here... */
+ return 0;
+ }
+}
+
+/**
* batadv_mcast_forw_tt_node_get - get a multicast tt node
* @bat_priv: the bat priv with all the soft interface information
* @ethhdr: the ether header containing the multicast destination
@@ -377,6 +400,84 @@ batadv_mcast_forw_tt_node_get(struct batadv_priv *bat_priv,
}
/**
+ * batadv_mcast_want_forw_ipv4_node_get - get a node with an ipv4 flag
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Returns an orig_node which has the BATADV_MCAST_WANT_ALL_IPV4 flag set and
+ * increases its refcount.
+ */
+static struct batadv_orig_node *
+batadv_mcast_forw_ipv4_node_get(struct batadv_priv *bat_priv)
+{
+ struct batadv_orig_node *tmp_orig_node, *orig_node = NULL;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(tmp_orig_node,
+ &bat_priv->mcast.want_all_ipv4_list,
+ mcast_want_all_ipv4_node) {
+ if (!atomic_inc_not_zero(&orig_node->refcount))
+ continue;
+
+ orig_node = tmp_orig_node;
+ break;
+ }
+ rcu_read_unlock();
+
+ return orig_node;
+}
+
+/**
+ * batadv_mcast_want_forw_ipv6_node_get - get a node with an ipv6 flag
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Returns an orig_node which has the BATADV_MCAST_WANT_ALL_IPV6 flag set
+ * and increases its refcount.
+ */
+static struct batadv_orig_node *
+batadv_mcast_forw_ipv6_node_get(struct batadv_priv *bat_priv)
+{
+ struct batadv_orig_node *tmp_orig_node, *orig_node = NULL;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(tmp_orig_node,
+ &bat_priv->mcast.want_all_ipv6_list,
+ mcast_want_all_ipv6_node) {
+ if (!atomic_inc_not_zero(&orig_node->refcount))
+ continue;
+
+ orig_node = tmp_orig_node;
+ break;
+ }
+ rcu_read_unlock();
+
+ return orig_node;
+}
+
+/**
+ * batadv_mcast_want_forw_ip_node_get - get a node with an ipv4/ipv6 flag
+ * @bat_priv: the bat priv with all the soft interface information
+ * @ethhdr: an ethernet header to determine the protocol family from
+ *
+ * Returns an orig_node which has the BATADV_MCAST_WANT_ALL_IPV4 or
+ * BATADV_MCAST_WANT_ALL_IPV6 flag, depending on the provided ethhdr, set and
+ * increases its refcount.
+ */
+static struct batadv_orig_node *
+batadv_mcast_forw_ip_node_get(struct batadv_priv *bat_priv,
+ struct ethhdr *ethhdr)
+{
+ switch (ntohs(ethhdr->h_proto)) {
+ case ETH_P_IP:
+ return batadv_mcast_forw_ipv4_node_get(bat_priv);
+ case ETH_P_IPV6:
+ return batadv_mcast_forw_ipv6_node_get(bat_priv);
+ default:
+ /* we shouldn't be here... */
+ return NULL;
+ }
+}
+
+/**
* batadv_mcast_want_forw_unsnoop_node_get - get a node with an unsnoopable flag
* @bat_priv: the bat priv with all the soft interface information
*
@@ -417,7 +518,7 @@ enum batadv_forw_mode
batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
struct batadv_orig_node **orig)
{
- int ret, tt_count, unsnoop_count, total_count;
+ int ret, tt_count, ip_count, unsnoop_count, total_count;
bool is_unsnoopable = false;
struct ethhdr *ethhdr;
@@ -431,15 +532,18 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
tt_count = batadv_tt_global_hash_count(bat_priv, ethhdr->h_dest,
BATADV_NO_FLAGS);
+ ip_count = batadv_mcast_forw_want_all_ip_count(bat_priv, ethhdr);
unsnoop_count = !is_unsnoopable ? 0 :
atomic_read(&bat_priv->mcast.num_want_all_unsnoopables);
- total_count = tt_count + unsnoop_count;
+ total_count = tt_count + ip_count + unsnoop_count;
switch (total_count) {
case 1:
if (tt_count)
*orig = batadv_mcast_forw_tt_node_get(bat_priv, ethhdr);
+ else if (ip_count)
+ *orig = batadv_mcast_forw_ip_node_get(bat_priv, ethhdr);
else if (unsnoop_count)
*orig = batadv_mcast_forw_unsnoop_node_get(bat_priv);
@@ -488,6 +592,72 @@ static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv,
}
/**
+ * batadv_mcast_want_ipv4_update - update want-all-ipv4 counter and list
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig: the orig_node which multicast state might have changed of
+ * @mcast_flags: flags indicating the new multicast state
+ *
+ * If the BATADV_MCAST_WANT_ALL_IPV4 flag of this originator, orig, has
+ * toggled then this method updates counter and list accordingly.
+ */
+static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t mcast_flags)
+{
+ /* switched from flag unset to set */
+ if (mcast_flags & BATADV_MCAST_WANT_ALL_IPV4 &&
+ !(orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV4)) {
+ atomic_inc(&bat_priv->mcast.num_want_all_ipv4);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_add_head_rcu(&orig->mcast_want_all_ipv4_node,
+ &bat_priv->mcast.want_all_ipv4_list);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ /* switched from flag set to unset */
+ } else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_IPV4) &&
+ orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV4) {
+ atomic_dec(&bat_priv->mcast.num_want_all_ipv4);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_del_rcu(&orig->mcast_want_all_ipv4_node);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ }
+}
+
+/**
+ * batadv_mcast_want_ipv6_update - update want-all-ipv6 counter and list
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig: the orig_node which multicast state might have changed of
+ * @mcast_flags: flags indicating the new multicast state
+ *
+ * If the BATADV_MCAST_WANT_ALL_IPV6 flag of this originator, orig, has
+ * toggled then this method updates counter and list accordingly.
+ */
+static void batadv_mcast_want_ipv6_update(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t mcast_flags)
+{
+ /* switched from flag unset to set */
+ if (mcast_flags & BATADV_MCAST_WANT_ALL_IPV6 &&
+ !(orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV6)) {
+ atomic_inc(&bat_priv->mcast.num_want_all_ipv6);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_add_head_rcu(&orig->mcast_want_all_ipv6_node,
+ &bat_priv->mcast.want_all_ipv6_list);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ /* switched from flag set to unset */
+ } else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_IPV6) &&
+ orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV6) {
+ atomic_dec(&bat_priv->mcast.num_want_all_ipv6);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_del_rcu(&orig->mcast_want_all_ipv6_node);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ }
+}
+
+/**
* batadv_mcast_tvlv_ogm_handler_v1 - process incoming multicast tvlv container
* @bat_priv: the bat priv with all the soft interface information
* @orig: the orig_node of the ogm
@@ -532,6 +702,8 @@ static void batadv_mcast_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
mcast_flags = *(uint8_t *)tvlv_value;
batadv_mcast_want_unsnoop_update(bat_priv, orig, mcast_flags);
+ batadv_mcast_want_ipv4_update(bat_priv, orig, mcast_flags);
+ batadv_mcast_want_ipv6_update(bat_priv, orig, mcast_flags);
orig->mcast_flags = mcast_flags;
}
@@ -571,4 +743,6 @@ void batadv_mcast_purge_orig(struct batadv_orig_node *orig)
atomic_dec(&bat_priv->mcast.num_disabled);
batadv_mcast_want_unsnoop_update(bat_priv, orig, BATADV_NO_FLAGS);
+ batadv_mcast_want_ipv4_update(bat_priv, orig, BATADV_NO_FLAGS);
+ batadv_mcast_want_ipv6_update(bat_priv, orig, BATADV_NO_FLAGS);
}
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index d061e26..c7f6eef 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -93,9 +93,13 @@ enum batadv_icmp_packettype {
* enum batadv_mcast_flags - flags for multicast capabilities and settings
* @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for
* 224.0.0.0/24 or ff02::1
+ * @BATADV_MCAST_WANT_ALL_IPV4: we want all IPv4 multicast packets
+ * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets
*/
enum batadv_mcast_flags {
BATADV_MCAST_WANT_ALL_UNSNOOPABLES = BIT(0),
+ BATADV_MCAST_WANT_ALL_IPV4 = BIT(1),
+ BATADV_MCAST_WANT_ALL_IPV6 = BIT(2),
};
/* tt data subtypes */
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 8bee5e8..3d64ed2 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -27,6 +27,7 @@
#include "originator.h"
#include "network-coding.h"
#include "fragmentation.h"
+#include "multicast.h"
static void batadv_send_outstanding_bcast_packet(struct work_struct *work);
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index db6feca..744a59b 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -711,6 +711,8 @@ static int batadv_softif_init_late(struct net_device *dev)
atomic_set(&bat_priv->multicast_mode, 1);
atomic_set(&bat_priv->mcast.num_disabled, 0);
atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0);
+ atomic_set(&bat_priv->mcast.num_want_all_ipv4, 0);
+ atomic_set(&bat_priv->mcast.num_want_all_ipv6, 0);
#endif
atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF);
atomic_set(&bat_priv->gw_sel_class, 20);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 1a674cb..d4b923c 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -207,6 +207,8 @@ struct batadv_orig_bat_iv {
* @mcast_flags: multicast flags announced by the orig node
* @mcast_want_all_unsnoop_node: a list node for the
* mcast.want_all_unsnoopables list
+ * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 list
+ * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 list
* @capabilities: announced capabilities of this originator
* @capa_initialized: bitfield to remember whether a capability was initialized
* @last_ttvn: last seen translation table version number
@@ -252,6 +254,8 @@ struct batadv_orig_node {
#ifdef CONFIG_BATMAN_ADV_MCAST
uint8_t mcast_flags;
struct hlist_node mcast_want_all_unsnoopables_node;
+ struct hlist_node mcast_want_all_ipv4_node;
+ struct hlist_node mcast_want_all_ipv6_node;
#endif
uint8_t capabilities;
uint8_t capa_initialized;
@@ -624,21 +628,29 @@ struct batadv_priv_dat {
* @mla_list: list of multicast addresses we are currently announcing via TT
* @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable
* multicast traffic
+ * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast traffic
+ * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic
* @flags: the flags we have last sent in our mcast tvlv
* @enabled: whether the multicast tvlv is currently enabled
* @num_disabled: number of nodes that have no mcast tvlv
* @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic
+ * @num_want_all_ipv4: counter for items in want_all_ipv4_list
+ * @num_want_all_ipv6: counter for items in want_all_ipv6_list
* @want_lists_lock: lock for protecting modifications to mcast want lists
* (traversals are rcu-locked)
*/
struct batadv_priv_mcast {
struct hlist_head mla_list;
struct hlist_head want_all_unsnoopables_list;
+ struct hlist_head want_all_ipv4_list;
+ struct hlist_head want_all_ipv6_list;
uint8_t flags;
bool enabled;
atomic_t num_disabled;
atomic_t num_want_all_unsnoopables;
- /* protects want_all_unsnoopables_list */
+ atomic_t num_want_all_ipv4;
+ atomic_t num_want_all_ipv6;
+ /* protects want_all_{unsnoopables,ipv4,ipv6}_list */
spinlock_t want_lists_lock;
};
#endif
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread* [B.A.T.M.A.N.] [PATCH 13/16] batman-adv: Send multicast packets to nodes with a WANT_ALL flag
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Linus Lüssing <linus.luessing@web.de>
With this patch a node sends IPv4 multicast packets to nodes which
have a BATADV_MCAST_WANT_ALL_IPV4 flag set and IPv6 multicast packets
to nodes which have a BATADV_MCAST_WANT_ALL_IPV6 flag set, too.
Why is this needed? There are scenarios involving bridges where
multicast report snooping and multicast TT announcements are not
sufficient, which would lead to packet loss for some nodes otherwise:
MLDv1 and IGMPv1/IGMPv2 have a suppression mechanism
for multicast listener reports. When we have an MLDv1/IGMPv1/IGMPv2
querier behind a bridge then our snooping bridge is potentially not
going to see any reports even though listeners exist because according
to RFC4541 such reports are only forwarded to multicast routers:
-----------------------------------------------------------
---------------
{Querier}---|Snoop. Switch|----{Listener}
---------------
\ ^
-------
| br0 | < ???
-------
\
_-~---~_
_-~/ ~-_
~ batman-adv \-----{Sender}
\~_ cloud ~/
-~~__-__-~_/
I) MLDv1 Query: {Querier} -> flooded
II) MLDv1 Report: {Listener} -> {Querier}
-> br0 cannot detect the {Listener}
=> Packets from {Sender} need to be forwarded to all
detected listeners and MLDv1/IGMPv1/IGMPv2 queriers.
-----------------------------------------------------------
Note that we do not need to explicitly forward to MLDv2/IGMPv3 queriers,
because these protocols have no report suppression: A bridge has no
trouble detecting MLDv2/IGMPv3 listeners.
Even though we do not support bridges yet we need to provide the
according infrastructure already to not break compatibility later.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/main.c | 2 +
net/batman-adv/multicast.c | 178 +++++++++++++++++++++++++++++++++++++++-
net/batman-adv/packet.h | 4 +
net/batman-adv/send.c | 1 +
net/batman-adv/soft-interface.c | 2 +
net/batman-adv/types.h | 14 +++-
6 files changed, 198 insertions(+), 3 deletions(-)
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 57b09fa..d1183e8 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -123,6 +123,8 @@ int batadv_mesh_init(struct net_device *soft_iface)
INIT_HLIST_HEAD(&bat_priv->gw.list);
#ifdef CONFIG_BATMAN_ADV_MCAST
INIT_HLIST_HEAD(&bat_priv->mcast.want_all_unsnoopables_list);
+ INIT_HLIST_HEAD(&bat_priv->mcast.want_all_ipv4_list);
+ INIT_HLIST_HEAD(&bat_priv->mcast.want_all_ipv6_list);
#endif
INIT_LIST_HEAD(&bat_priv->tt.changes_list);
INIT_LIST_HEAD(&bat_priv->tt.req_list);
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index a4804fa..8c7ca81 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -361,6 +361,29 @@ static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv,
}
/**
+ * batadv_mcast_want_all_ip_count - count nodes with unspecific mcast interest
+ * @bat_priv: the bat priv with all the soft interface information
+ * @ethhdr: ethernet header of a packet
+ *
+ * Returns the number of nodes which want all IPv4 multicast traffic if the
+ * given ethhdr is from an IPv4 packet or the number of nodes which want all
+ * IPv6 traffic if it matches an IPv6 packet.
+ */
+static int batadv_mcast_forw_want_all_ip_count(struct batadv_priv *bat_priv,
+ struct ethhdr *ethhdr)
+{
+ switch (ntohs(ethhdr->h_proto)) {
+ case ETH_P_IP:
+ return atomic_read(&bat_priv->mcast.num_want_all_ipv4);
+ case ETH_P_IPV6:
+ return atomic_read(&bat_priv->mcast.num_want_all_ipv6);
+ default:
+ /* we shouldn't be here... */
+ return 0;
+ }
+}
+
+/**
* batadv_mcast_forw_tt_node_get - get a multicast tt node
* @bat_priv: the bat priv with all the soft interface information
* @ethhdr: the ether header containing the multicast destination
@@ -377,6 +400,84 @@ batadv_mcast_forw_tt_node_get(struct batadv_priv *bat_priv,
}
/**
+ * batadv_mcast_want_forw_ipv4_node_get - get a node with an ipv4 flag
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Returns an orig_node which has the BATADV_MCAST_WANT_ALL_IPV4 flag set and
+ * increases its refcount.
+ */
+static struct batadv_orig_node *
+batadv_mcast_forw_ipv4_node_get(struct batadv_priv *bat_priv)
+{
+ struct batadv_orig_node *tmp_orig_node, *orig_node = NULL;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(tmp_orig_node,
+ &bat_priv->mcast.want_all_ipv4_list,
+ mcast_want_all_ipv4_node) {
+ if (!atomic_inc_not_zero(&orig_node->refcount))
+ continue;
+
+ orig_node = tmp_orig_node;
+ break;
+ }
+ rcu_read_unlock();
+
+ return orig_node;
+}
+
+/**
+ * batadv_mcast_want_forw_ipv6_node_get - get a node with an ipv6 flag
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Returns an orig_node which has the BATADV_MCAST_WANT_ALL_IPV6 flag set
+ * and increases its refcount.
+ */
+static struct batadv_orig_node *
+batadv_mcast_forw_ipv6_node_get(struct batadv_priv *bat_priv)
+{
+ struct batadv_orig_node *tmp_orig_node, *orig_node = NULL;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(tmp_orig_node,
+ &bat_priv->mcast.want_all_ipv6_list,
+ mcast_want_all_ipv6_node) {
+ if (!atomic_inc_not_zero(&orig_node->refcount))
+ continue;
+
+ orig_node = tmp_orig_node;
+ break;
+ }
+ rcu_read_unlock();
+
+ return orig_node;
+}
+
+/**
+ * batadv_mcast_want_forw_ip_node_get - get a node with an ipv4/ipv6 flag
+ * @bat_priv: the bat priv with all the soft interface information
+ * @ethhdr: an ethernet header to determine the protocol family from
+ *
+ * Returns an orig_node which has the BATADV_MCAST_WANT_ALL_IPV4 or
+ * BATADV_MCAST_WANT_ALL_IPV6 flag, depending on the provided ethhdr, set and
+ * increases its refcount.
+ */
+static struct batadv_orig_node *
+batadv_mcast_forw_ip_node_get(struct batadv_priv *bat_priv,
+ struct ethhdr *ethhdr)
+{
+ switch (ntohs(ethhdr->h_proto)) {
+ case ETH_P_IP:
+ return batadv_mcast_forw_ipv4_node_get(bat_priv);
+ case ETH_P_IPV6:
+ return batadv_mcast_forw_ipv6_node_get(bat_priv);
+ default:
+ /* we shouldn't be here... */
+ return NULL;
+ }
+}
+
+/**
* batadv_mcast_want_forw_unsnoop_node_get - get a node with an unsnoopable flag
* @bat_priv: the bat priv with all the soft interface information
*
@@ -417,7 +518,7 @@ enum batadv_forw_mode
batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
struct batadv_orig_node **orig)
{
- int ret, tt_count, unsnoop_count, total_count;
+ int ret, tt_count, ip_count, unsnoop_count, total_count;
bool is_unsnoopable = false;
struct ethhdr *ethhdr;
@@ -431,15 +532,18 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
tt_count = batadv_tt_global_hash_count(bat_priv, ethhdr->h_dest,
BATADV_NO_FLAGS);
+ ip_count = batadv_mcast_forw_want_all_ip_count(bat_priv, ethhdr);
unsnoop_count = !is_unsnoopable ? 0 :
atomic_read(&bat_priv->mcast.num_want_all_unsnoopables);
- total_count = tt_count + unsnoop_count;
+ total_count = tt_count + ip_count + unsnoop_count;
switch (total_count) {
case 1:
if (tt_count)
*orig = batadv_mcast_forw_tt_node_get(bat_priv, ethhdr);
+ else if (ip_count)
+ *orig = batadv_mcast_forw_ip_node_get(bat_priv, ethhdr);
else if (unsnoop_count)
*orig = batadv_mcast_forw_unsnoop_node_get(bat_priv);
@@ -488,6 +592,72 @@ static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv,
}
/**
+ * batadv_mcast_want_ipv4_update - update want-all-ipv4 counter and list
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig: the orig_node which multicast state might have changed of
+ * @mcast_flags: flags indicating the new multicast state
+ *
+ * If the BATADV_MCAST_WANT_ALL_IPV4 flag of this originator, orig, has
+ * toggled then this method updates counter and list accordingly.
+ */
+static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t mcast_flags)
+{
+ /* switched from flag unset to set */
+ if (mcast_flags & BATADV_MCAST_WANT_ALL_IPV4 &&
+ !(orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV4)) {
+ atomic_inc(&bat_priv->mcast.num_want_all_ipv4);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_add_head_rcu(&orig->mcast_want_all_ipv4_node,
+ &bat_priv->mcast.want_all_ipv4_list);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ /* switched from flag set to unset */
+ } else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_IPV4) &&
+ orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV4) {
+ atomic_dec(&bat_priv->mcast.num_want_all_ipv4);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_del_rcu(&orig->mcast_want_all_ipv4_node);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ }
+}
+
+/**
+ * batadv_mcast_want_ipv6_update - update want-all-ipv6 counter and list
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig: the orig_node which multicast state might have changed of
+ * @mcast_flags: flags indicating the new multicast state
+ *
+ * If the BATADV_MCAST_WANT_ALL_IPV6 flag of this originator, orig, has
+ * toggled then this method updates counter and list accordingly.
+ */
+static void batadv_mcast_want_ipv6_update(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *orig,
+ uint8_t mcast_flags)
+{
+ /* switched from flag unset to set */
+ if (mcast_flags & BATADV_MCAST_WANT_ALL_IPV6 &&
+ !(orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV6)) {
+ atomic_inc(&bat_priv->mcast.num_want_all_ipv6);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_add_head_rcu(&orig->mcast_want_all_ipv6_node,
+ &bat_priv->mcast.want_all_ipv6_list);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ /* switched from flag set to unset */
+ } else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_IPV6) &&
+ orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV6) {
+ atomic_dec(&bat_priv->mcast.num_want_all_ipv6);
+
+ spin_lock_bh(&bat_priv->mcast.want_lists_lock);
+ hlist_del_rcu(&orig->mcast_want_all_ipv6_node);
+ spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
+ }
+}
+
+/**
* batadv_mcast_tvlv_ogm_handler_v1 - process incoming multicast tvlv container
* @bat_priv: the bat priv with all the soft interface information
* @orig: the orig_node of the ogm
@@ -532,6 +702,8 @@ static void batadv_mcast_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
mcast_flags = *(uint8_t *)tvlv_value;
batadv_mcast_want_unsnoop_update(bat_priv, orig, mcast_flags);
+ batadv_mcast_want_ipv4_update(bat_priv, orig, mcast_flags);
+ batadv_mcast_want_ipv6_update(bat_priv, orig, mcast_flags);
orig->mcast_flags = mcast_flags;
}
@@ -571,4 +743,6 @@ void batadv_mcast_purge_orig(struct batadv_orig_node *orig)
atomic_dec(&bat_priv->mcast.num_disabled);
batadv_mcast_want_unsnoop_update(bat_priv, orig, BATADV_NO_FLAGS);
+ batadv_mcast_want_ipv4_update(bat_priv, orig, BATADV_NO_FLAGS);
+ batadv_mcast_want_ipv6_update(bat_priv, orig, BATADV_NO_FLAGS);
}
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index d061e26..c7f6eef 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -93,9 +93,13 @@ enum batadv_icmp_packettype {
* enum batadv_mcast_flags - flags for multicast capabilities and settings
* @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for
* 224.0.0.0/24 or ff02::1
+ * @BATADV_MCAST_WANT_ALL_IPV4: we want all IPv4 multicast packets
+ * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets
*/
enum batadv_mcast_flags {
BATADV_MCAST_WANT_ALL_UNSNOOPABLES = BIT(0),
+ BATADV_MCAST_WANT_ALL_IPV4 = BIT(1),
+ BATADV_MCAST_WANT_ALL_IPV6 = BIT(2),
};
/* tt data subtypes */
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 8bee5e8..3d64ed2 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -27,6 +27,7 @@
#include "originator.h"
#include "network-coding.h"
#include "fragmentation.h"
+#include "multicast.h"
static void batadv_send_outstanding_bcast_packet(struct work_struct *work);
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index db6feca..744a59b 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -711,6 +711,8 @@ static int batadv_softif_init_late(struct net_device *dev)
atomic_set(&bat_priv->multicast_mode, 1);
atomic_set(&bat_priv->mcast.num_disabled, 0);
atomic_set(&bat_priv->mcast.num_want_all_unsnoopables, 0);
+ atomic_set(&bat_priv->mcast.num_want_all_ipv4, 0);
+ atomic_set(&bat_priv->mcast.num_want_all_ipv6, 0);
#endif
atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF);
atomic_set(&bat_priv->gw_sel_class, 20);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 1a674cb..d4b923c 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -207,6 +207,8 @@ struct batadv_orig_bat_iv {
* @mcast_flags: multicast flags announced by the orig node
* @mcast_want_all_unsnoop_node: a list node for the
* mcast.want_all_unsnoopables list
+ * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 list
+ * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 list
* @capabilities: announced capabilities of this originator
* @capa_initialized: bitfield to remember whether a capability was initialized
* @last_ttvn: last seen translation table version number
@@ -252,6 +254,8 @@ struct batadv_orig_node {
#ifdef CONFIG_BATMAN_ADV_MCAST
uint8_t mcast_flags;
struct hlist_node mcast_want_all_unsnoopables_node;
+ struct hlist_node mcast_want_all_ipv4_node;
+ struct hlist_node mcast_want_all_ipv6_node;
#endif
uint8_t capabilities;
uint8_t capa_initialized;
@@ -624,21 +628,29 @@ struct batadv_priv_dat {
* @mla_list: list of multicast addresses we are currently announcing via TT
* @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable
* multicast traffic
+ * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast traffic
+ * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic
* @flags: the flags we have last sent in our mcast tvlv
* @enabled: whether the multicast tvlv is currently enabled
* @num_disabled: number of nodes that have no mcast tvlv
* @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic
+ * @num_want_all_ipv4: counter for items in want_all_ipv4_list
+ * @num_want_all_ipv6: counter for items in want_all_ipv6_list
* @want_lists_lock: lock for protecting modifications to mcast want lists
* (traversals are rcu-locked)
*/
struct batadv_priv_mcast {
struct hlist_head mla_list;
struct hlist_head want_all_unsnoopables_list;
+ struct hlist_head want_all_ipv4_list;
+ struct hlist_head want_all_ipv6_list;
uint8_t flags;
bool enabled;
atomic_t num_disabled;
atomic_t num_want_all_unsnoopables;
- /* protects want_all_unsnoopables_list */
+ atomic_t num_want_all_ipv4;
+ atomic_t num_want_all_ipv6;
+ /* protects want_all_{unsnoopables,ipv4,ipv6}_list */
spinlock_t want_lists_lock;
};
#endif
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 14/16] batman-adv: improve the TT flags documentation
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Antonio Quartulli, Marek Lindner
From: Antonio Quartulli <antonio@open-mesh.com>
Convert the current documentation for the TT flags in proper
kerneldoc and improve it by adding an explanation for each
of the flags.
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
---
net/batman-adv/packet.h | 28 ++++++++++++++++++++++++----
1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index c7f6eef..34e096d 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -119,10 +119,30 @@ enum batadv_tt_data_flags {
BATADV_TT_FULL_TABLE = BIT(4),
};
-/* BATADV_TT_CLIENT flags.
- * Flags from BIT(0) to BIT(7) are sent on the wire, while flags from BIT(8) to
- * BIT(15) are used for local computation only.
- * Flags from BIT(4) to BIT(7) are kept in sync with the rest of the network.
+/**
+ * enum batadv_tt_client_flags - TT client specific flags
+ * @BATADV_TT_CLIENT_DEL: the client has to be deleted from the table
+ * @BATADV_TT_CLIENT_ROAM: the client roamed to/from another node and the new
+ * update telling its new real location has not been received/sent yet
+ * @BATADV_TT_CLIENT_WIFI: this client is connected through a wifi interface.
+ * This information is used by the "AP Isolation" feature
+ * @BATADV_TT_CLIENT_ISOLA: this client is considered "isolated". This
+ * information is used by the Extended Isolation feature
+ * @BATADV_TT_CLIENT_NOPURGE: this client should never be removed from the table
+ * @BATADV_TT_CLIENT_NEW: this client has been added to the local table but has
+ * not been announced yet
+ * @BATADV_TT_CLIENT_PENDING: this client is marked for removal but it is kept
+ * in the table for one more originator interval for consistency purposes
+ * @BATADV_TT_CLIENT_TEMP: this global client has been detected to be part of
+ * the network but no nnode has already announced it
+ *
+ * Bits from 0 to 7 are called _remote flags_ because they are sent on the wire.
+ * Bits from 8 to 15 are called _local flags_ because they are used for local
+ * computations only.
+ *
+ * Bits from 4 to 7 - a subset of remote flags - are ensured to be in sync with
+ * the other nodes in the network. To achieve this goal these flags are included
+ * in the TT CRC computation.
*/
enum batadv_tt_client_flags {
BATADV_TT_CLIENT_DEL = BIT(0),
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread* [B.A.T.M.A.N.] [PATCH 14/16] batman-adv: improve the TT flags documentation
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Antonio Quartulli <antonio@open-mesh.com>
Convert the current documentation for the TT flags in proper
kerneldoc and improve it by adding an explanation for each
of the flags.
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
---
net/batman-adv/packet.h | 28 ++++++++++++++++++++++++----
1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index c7f6eef..34e096d 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -119,10 +119,30 @@ enum batadv_tt_data_flags {
BATADV_TT_FULL_TABLE = BIT(4),
};
-/* BATADV_TT_CLIENT flags.
- * Flags from BIT(0) to BIT(7) are sent on the wire, while flags from BIT(8) to
- * BIT(15) are used for local computation only.
- * Flags from BIT(4) to BIT(7) are kept in sync with the rest of the network.
+/**
+ * enum batadv_tt_client_flags - TT client specific flags
+ * @BATADV_TT_CLIENT_DEL: the client has to be deleted from the table
+ * @BATADV_TT_CLIENT_ROAM: the client roamed to/from another node and the new
+ * update telling its new real location has not been received/sent yet
+ * @BATADV_TT_CLIENT_WIFI: this client is connected through a wifi interface.
+ * This information is used by the "AP Isolation" feature
+ * @BATADV_TT_CLIENT_ISOLA: this client is considered "isolated". This
+ * information is used by the Extended Isolation feature
+ * @BATADV_TT_CLIENT_NOPURGE: this client should never be removed from the table
+ * @BATADV_TT_CLIENT_NEW: this client has been added to the local table but has
+ * not been announced yet
+ * @BATADV_TT_CLIENT_PENDING: this client is marked for removal but it is kept
+ * in the table for one more originator interval for consistency purposes
+ * @BATADV_TT_CLIENT_TEMP: this global client has been detected to be part of
+ * the network but no nnode has already announced it
+ *
+ * Bits from 0 to 7 are called _remote flags_ because they are sent on the wire.
+ * Bits from 8 to 15 are called _local flags_ because they are used for local
+ * computations only.
+ *
+ * Bits from 4 to 7 - a subset of remote flags - are ensured to be in sync with
+ * the other nodes in the network. To achieve this goal these flags are included
+ * in the TT CRC computation.
*/
enum batadv_tt_client_flags {
BATADV_TT_CLIENT_DEL = BIT(0),
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 15/16] batman-adv: improve DAT documentation
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Antonio Quartulli, Marek Lindner
From: Antonio Quartulli <antonio@open-mesh.com>
Add missing documentation for BATADV_DAT_ADDR_MAX and
convert an existing documentation to kerneldoc
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
---
net/batman-adv/distributed-arp-table.h | 3 +++
net/batman-adv/types.h | 5 +++--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/batman-adv/distributed-arp-table.h b/net/batman-adv/distributed-arp-table.h
index ac9be9b..d76e1d0 100644
--- a/net/batman-adv/distributed-arp-table.h
+++ b/net/batman-adv/distributed-arp-table.h
@@ -25,6 +25,9 @@
#include <linux/if_arp.h>
+/**
+ * BATADV_DAT_ADDR_MAX - maximum address value in the DHT space
+ */
#define BATADV_DAT_ADDR_MAX ((batadv_dat_addr_t)~(batadv_dat_addr_t)0)
void batadv_dat_status_update(struct net_device *net_dev);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index d4b923c..34891a5 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -24,8 +24,9 @@
#ifdef CONFIG_BATMAN_ADV_DAT
-/* batadv_dat_addr_t is the type used for all DHT addresses. If it is changed,
- * BATADV_DAT_ADDR_MAX is changed as well.
+/**
+ * batadv_dat_addr_t - it is the type used for all DHT addresses. If it is
+ * changed, BATADV_DAT_ADDR_MAX is changed as well.
*
* *Please be careful: batadv_dat_addr_t must be UNSIGNED*
*/
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [B.A.T.M.A.N.] [PATCH 15/16] batman-adv: improve DAT documentation
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Marek Lindner, Antonio Quartulli
From: Antonio Quartulli <antonio@open-mesh.com>
Add missing documentation for BATADV_DAT_ADDR_MAX and
convert an existing documentation to kerneldoc
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
---
net/batman-adv/distributed-arp-table.h | 3 +++
net/batman-adv/types.h | 5 +++--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/batman-adv/distributed-arp-table.h b/net/batman-adv/distributed-arp-table.h
index ac9be9b..d76e1d0 100644
--- a/net/batman-adv/distributed-arp-table.h
+++ b/net/batman-adv/distributed-arp-table.h
@@ -25,6 +25,9 @@
#include <linux/if_arp.h>
+/**
+ * BATADV_DAT_ADDR_MAX - maximum address value in the DHT space
+ */
#define BATADV_DAT_ADDR_MAX ((batadv_dat_addr_t)~(batadv_dat_addr_t)0)
void batadv_dat_status_update(struct net_device *net_dev);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index d4b923c..34891a5 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -24,8 +24,9 @@
#ifdef CONFIG_BATMAN_ADV_DAT
-/* batadv_dat_addr_t is the type used for all DHT addresses. If it is changed,
- * BATADV_DAT_ADDR_MAX is changed as well.
+/**
+ * batadv_dat_addr_t - it is the type used for all DHT addresses. If it is
+ * changed, BATADV_DAT_ADDR_MAX is changed as well.
*
* *Please be careful: batadv_dat_addr_t must be UNSIGNED*
*/
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH 16/16] batman-adv: Start new development cycle
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 8:56 ` Antonio Quartulli
-1 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Simon Wunderlich, Antonio Quartulli
From: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/main.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 515dce7..770dc89 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -24,7 +24,7 @@
#define BATADV_DRIVER_DEVICE "batman-adv"
#ifndef BATADV_SOURCE_VERSION
-#define BATADV_SOURCE_VERSION "2014.1.0"
+#define BATADV_SOURCE_VERSION "2014.2.0"
#endif
/* B.A.T.M.A.N. parameters */
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [B.A.T.M.A.N.] [PATCH 16/16] batman-adv: Start new development cycle
@ 2014-03-22 8:56 ` Antonio Quartulli
0 siblings, 0 replies; 36+ messages in thread
From: Antonio Quartulli @ 2014-03-22 8:56 UTC (permalink / raw)
To: davem; +Cc: netdev, b.a.t.m.a.n, Antonio Quartulli
From: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---
net/batman-adv/main.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 515dce7..770dc89 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -24,7 +24,7 @@
#define BATADV_DRIVER_DEVICE "batman-adv"
#ifndef BATADV_SOURCE_VERSION
-#define BATADV_SOURCE_VERSION "2014.1.0"
+#define BATADV_SOURCE_VERSION "2014.2.0"
#endif
/* B.A.T.M.A.N. parameters */
--
1.8.3.2
^ permalink raw reply related [flat|nested] 36+ messages in thread
* Re: pull request: batman-adv 20140322
2014-03-22 8:56 ` [B.A.T.M.A.N.] " Antonio Quartulli
@ 2014-03-22 19:00 ` David Miller
-1 siblings, 0 replies; 36+ messages in thread
From: David Miller @ 2014-03-22 19:00 UTC (permalink / raw)
To: antonio; +Cc: netdev, b.a.t.m.a.n
From: Antonio Quartulli <antonio@meshcoding.com>
Date: Sat, 22 Mar 2014 09:56:00 +0100
> here you have our patchset for net-next/linux-3.15.
> They are 16 patches but most of them are just small cleanups and kerneldoc
> improvements.
>
> The only big change is the one from patch 8 to 13 by Linus Lüssing that
> introduces a new multicast packets optimisation. This new component aims to
> reduce the air overhead by sending multicast packets as bat-unicast
> when only one destination exists or by dropping them directly at the source if
> the multicast group is totally empty.
>
> In patch 11 Linus introduces an atomic_t variable, that like others that we
> already have is only object of write and read, thus making the atomic
> characteristic totally useless.
> Unfortunately this is part of our sysfs framework, that helps the developer to
> introduce new knobs by using few macros only. For this reason we decided to keep
> Linus' new knob for now, but I'd like to let you know that we are in the process
> of re-working such framework in order to convert all the current (useless)
> atomic_t to boolean in one go.
>
> Please pull or let me know of any problem!
Pulled, thanks Antonio.
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [B.A.T.M.A.N.] pull request: batman-adv 20140322
@ 2014-03-22 19:00 ` David Miller
0 siblings, 0 replies; 36+ messages in thread
From: David Miller @ 2014-03-22 19:00 UTC (permalink / raw)
To: antonio; +Cc: netdev, b.a.t.m.a.n
From: Antonio Quartulli <antonio@meshcoding.com>
Date: Sat, 22 Mar 2014 09:56:00 +0100
> here you have our patchset for net-next/linux-3.15.
> They are 16 patches but most of them are just small cleanups and kerneldoc
> improvements.
>
> The only big change is the one from patch 8 to 13 by Linus Lüssing that
> introduces a new multicast packets optimisation. This new component aims to
> reduce the air overhead by sending multicast packets as bat-unicast
> when only one destination exists or by dropping them directly at the source if
> the multicast group is totally empty.
>
> In patch 11 Linus introduces an atomic_t variable, that like others that we
> already have is only object of write and read, thus making the atomic
> characteristic totally useless.
> Unfortunately this is part of our sysfs framework, that helps the developer to
> introduce new knobs by using few macros only. For this reason we decided to keep
> Linus' new knob for now, but I'd like to let you know that we are in the process
> of re-working such framework in order to convert all the current (useless)
> atomic_t to boolean in one go.
>
> Please pull or let me know of any problem!
Pulled, thanks Antonio.
^ permalink raw reply [flat|nested] 36+ messages in thread