pull request: batman-adv 2013-05-29b

pull request: batman-adv 2013-05-29b

[Antonio Quartulli]

Hello David,

this is again our pull request intended for net-next/linux-3.11.

Apparently my mail server decided that 14/21 was spam and refused all the
subsequent emails. It's a first step towards the automatic kernel maintenance
:-)

Again:

The only real behavioural change in this batch is the broadcast overhead
reduction on non-wireless interfaces brought by Matthias Schiffer.

The rest is made up by code cleanups and refactoring.

Two highlights on the refactoring are the introduction of
netdev_alloc_skb_ip_align() to avoid to deal with NET_IP_ALIGN manually and the
introduction of the eth_hdr() wherever it was possible in order to improve
readability.


Please pull or let me know of any problem.

Thanks a lot,
	Antonio



The following changes since commit 06ecf24bdf2b7afc6c8fd13de6dba2a96dd331b6:

  net: Fix build warnings after mac_header and transport_header became __u16. (2013-05-28 13:15:50 -0700)

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 6715fd3f0538e805b6a769d66823ec16b8b647ac:

  batman-adv: Start new development cycle (2013-05-29 02:44:56 +0200)

----------------------------------------------------------------
Included changes:
- reduce broadcast overhead on non-lossy wired links
- fix typos in kernel doc
- use eth_hdr() when possible
- use netdev_allock_skb_ip_align() and don't deal with NET_IP_ALIGN
- change VID semantic in the BLA component
- other minor cleanups and code refactoring

----------------------------------------------------------------
Antonio Quartulli (14):
      batman-adv: drop useless argument seqno in neighbor creation
      batman-adv: slightly improve neighbor creation debug message
      batman-adv: don't check the source address twice
      batman-adv: don't check compat version twice
      batman-adv: do not silently ignore wrong condition
      batman-adv: don't initialise batman_iv private members in hard-interface.c
      batman-adv: use eth_hdr() when it makes sense
      batman-adv: move ring_buffer helper functions in bat_iv_ogm
      batman-adv: move batadv_slide_own_bcast_window to bat_iv_ogm.c
      batman-adv: refactor batadv_tt_local_event()
      batman-adv: don't deal with NET_IP_ALIGN manually
      batman-adv: pass a 16bit long flag argument to tt_global_add()
      batman-adv: change VID semantic in the BLA code
      batman-adv: print the VID properly

Linus Lüssing (1):
      batman-adv: Remove unnecessary INIT_HLIST_NODE() calls

Marek Lindner (2):
      batman-adv: fix typos in kernel doc & comments
      batman-adv: do not print orig nodes without nc neighbors on nc table print

Martin Hundebøll (1):
      batman-adv: Move call to batadv_nc_skb_forward() from routing.c to send.c

Matthias Schiffer (2):
      batman-adv: split batadv_is_wifi_iface() into two functions
      batman-adv: send each broadcast only once on non-wireless interfaces

Simon Wunderlich (1):
      batman-adv: Start new development cycle

 net/batman-adv/Makefile                |   1 -
 net/batman-adv/bat_iv_ogm.c            | 122 ++++++++++++++++++++++++---------
 net/batman-adv/bridge_loop_avoidance.c |  94 +++++++++++++------------
 net/batman-adv/bridge_loop_avoidance.h |  12 ++--
 net/batman-adv/distributed-arp-table.c |  82 +++++++++++-----------
 net/batman-adv/hard-interface.c        |  96 +++++++++++++++-----------
 net/batman-adv/icmp_socket.c           |   4 +-
 net/batman-adv/main.h                  |  18 ++++-
 net/batman-adv/network-coding.c        |  22 +++---
 net/batman-adv/network-coding.h        |   6 +-
 net/batman-adv/originator.c            |   6 +-
 net/batman-adv/originator.h            |   2 +-
 net/batman-adv/ring_buffer.c           |  51 --------------
 net/batman-adv/ring_buffer.h           |  27 --------
 net/batman-adv/routing.c               |  64 +++++------------
 net/batman-adv/routing.h               |   1 -
 net/batman-adv/send.c                  |  36 ++++++----
 net/batman-adv/send.h                  |   6 +-
 net/batman-adv/soft-interface.c        |   6 +-
 net/batman-adv/translation-table.c     |  74 +++++++++++++-------
 net/batman-adv/translation-table.h     |   2 +-
 net/batman-adv/types.h                 |   6 +-
 net/batman-adv/unicast.c               |   2 +-
 net/batman-adv/vis.c                   |  19 ++---
 24 files changed, 395 insertions(+), 364 deletions(-)
 delete mode 100644 net/batman-adv/ring_buffer.c
 delete mode 100644 net/batman-adv/ring_buffer.h

[B.A.T.M.A.N.] pull request: batman-adv 2013-05-29b

[Antonio Quartulli]

Hello David,

this is again our pull request intended for net-next/linux-3.11.

Apparently my mail server decided that 14/21 was spam and refused all the
subsequent emails. It's a first step towards the automatic kernel maintenance
:-)

Again:

The only real behavioural change in this batch is the broadcast overhead
reduction on non-wireless interfaces brought by Matthias Schiffer.

The rest is made up by code cleanups and refactoring.

Two highlights on the refactoring are the introduction of
netdev_alloc_skb_ip_align() to avoid to deal with NET_IP_ALIGN manually and the
introduction of the eth_hdr() wherever it was possible in order to improve
readability.


Please pull or let me know of any problem.

Thanks a lot,
	Antonio



The following changes since commit 06ecf24bdf2b7afc6c8fd13de6dba2a96dd331b6:

  net: Fix build warnings after mac_header and transport_header became __u16. (2013-05-28 13:15:50 -0700)

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 6715fd3f0538e805b6a769d66823ec16b8b647ac:

  batman-adv: Start new development cycle (2013-05-29 02:44:56 +0200)

----------------------------------------------------------------
Included changes:
- reduce broadcast overhead on non-lossy wired links
- fix typos in kernel doc
- use eth_hdr() when possible
- use netdev_allock_skb_ip_align() and don't deal with NET_IP_ALIGN
- change VID semantic in the BLA component
- other minor cleanups and code refactoring

----------------------------------------------------------------
Antonio Quartulli (14):
      batman-adv: drop useless argument seqno in neighbor creation
      batman-adv: slightly improve neighbor creation debug message
      batman-adv: don't check the source address twice
      batman-adv: don't check compat version twice
      batman-adv: do not silently ignore wrong condition
      batman-adv: don't initialise batman_iv private members in hard-interface.c
      batman-adv: use eth_hdr() when it makes sense
      batman-adv: move ring_buffer helper functions in bat_iv_ogm
      batman-adv: move batadv_slide_own_bcast_window to bat_iv_ogm.c
      batman-adv: refactor batadv_tt_local_event()
      batman-adv: don't deal with NET_IP_ALIGN manually
      batman-adv: pass a 16bit long flag argument to tt_global_add()
      batman-adv: change VID semantic in the BLA code
      batman-adv: print the VID properly

Linus Lüssing (1):
      batman-adv: Remove unnecessary INIT_HLIST_NODE() calls

Marek Lindner (2):
      batman-adv: fix typos in kernel doc & comments
      batman-adv: do not print orig nodes without nc neighbors on nc table print

Martin Hundebøll (1):
      batman-adv: Move call to batadv_nc_skb_forward() from routing.c to send.c

Matthias Schiffer (2):
      batman-adv: split batadv_is_wifi_iface() into two functions
      batman-adv: send each broadcast only once on non-wireless interfaces

Simon Wunderlich (1):
      batman-adv: Start new development cycle

 net/batman-adv/Makefile                |   1 -
 net/batman-adv/bat_iv_ogm.c            | 122 ++++++++++++++++++++++++---------
 net/batman-adv/bridge_loop_avoidance.c |  94 +++++++++++++------------
 net/batman-adv/bridge_loop_avoidance.h |  12 ++--
 net/batman-adv/distributed-arp-table.c |  82 +++++++++++-----------
 net/batman-adv/hard-interface.c        |  96 +++++++++++++++-----------
 net/batman-adv/icmp_socket.c           |   4 +-
 net/batman-adv/main.h                  |  18 ++++-
 net/batman-adv/network-coding.c        |  22 +++---
 net/batman-adv/network-coding.h        |   6 +-
 net/batman-adv/originator.c            |   6 +-
 net/batman-adv/originator.h            |   2 +-
 net/batman-adv/ring_buffer.c           |  51 --------------
 net/batman-adv/ring_buffer.h           |  27 --------
 net/batman-adv/routing.c               |  64 +++++------------
 net/batman-adv/routing.h               |   1 -
 net/batman-adv/send.c                  |  36 ++++++----
 net/batman-adv/send.h                  |   6 +-
 net/batman-adv/soft-interface.c        |   6 +-
 net/batman-adv/translation-table.c     |  74 +++++++++++++-------
 net/batman-adv/translation-table.h     |   2 +-
 net/batman-adv/types.h                 |   6 +-
 net/batman-adv/unicast.c               |   2 +-
 net/batman-adv/vis.c                   |  19 ++---
 24 files changed, 395 insertions(+), 364 deletions(-)
 delete mode 100644 net/batman-adv/ring_buffer.c
 delete mode 100644 net/batman-adv/ring_buffer.h

[PATCH 01/21] batman-adv: split batadv_is_wifi_iface() into two functions

[Antonio Quartulli]

From: Matthias Schiffer <mschiffer@universe-factory.net>

Previously batadv_is_wifi_iface() did two things at once: looking up a
net_device from an interface index, and determining if it is a wifi device.

The second part is useful itself when the caller already has a net_device
reference.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/hard-interface.c | 84 +++++++++++++++++++++++++----------------
 1 file changed, 52 insertions(+), 32 deletions(-)

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index b6504ea..d5ec67b 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -117,6 +117,58 @@ static int batadv_is_valid_iface(const struct net_device *net_dev)
 	return 1;
 }
 
+/**
+ * batadv_is_wifi_netdev - check if the given net_device struct is a wifi
+ *  interface
+ * @net_device: the device to check
+ *
+ * Returns true if the net device is a 802.11 wireless device, false otherwise.
+ */
+static bool batadv_is_wifi_netdev(struct net_device *net_device)
+{
+#ifdef CONFIG_WIRELESS_EXT
+	/* pre-cfg80211 drivers have to implement WEXT, so it is possible to
+	 * check for wireless_handlers != NULL
+	 */
+	if (net_device->wireless_handlers)
+		return true;
+#endif
+
+	/* cfg80211 drivers have to set ieee80211_ptr */
+	if (net_device->ieee80211_ptr)
+		return true;
+
+	return false;
+}
+
+/**
+ * batadv_is_wifi_iface - check if the given interface represented by ifindex
+ *  is a wifi interface
+ * @ifindex: interface index to check
+ *
+ * Returns true if the interface represented by ifindex is a 802.11 wireless
+ * device, false otherwise.
+ */
+bool batadv_is_wifi_iface(int ifindex)
+{
+	struct net_device *net_device = NULL;
+	bool ret = false;
+
+	if (ifindex == BATADV_NULL_IFINDEX)
+		goto out;
+
+	net_device = dev_get_by_index(&init_net, ifindex);
+	if (!net_device)
+		goto out;
+
+	ret = batadv_is_wifi_netdev(net_device);
+
+out:
+	if (net_device)
+		dev_put(net_device);
+	return ret;
+}
+
 static struct batadv_hard_iface *
 batadv_hardif_get_active(const struct net_device *soft_iface)
 {
@@ -657,38 +709,6 @@ out:
 	return NOTIFY_DONE;
 }
 
-/* This function returns true if the interface represented by ifindex is a
- * 802.11 wireless device
- */
-bool batadv_is_wifi_iface(int ifindex)
-{
-	struct net_device *net_device = NULL;
-	bool ret = false;
-
-	if (ifindex == BATADV_NULL_IFINDEX)
-		goto out;
-
-	net_device = dev_get_by_index(&init_net, ifindex);
-	if (!net_device)
-		goto out;
-
-#ifdef CONFIG_WIRELESS_EXT
-	/* pre-cfg80211 drivers have to implement WEXT, so it is possible to
-	 * check for wireless_handlers != NULL
-	 */
-	if (net_device->wireless_handlers)
-		ret = true;
-	else
-#endif
-		/* cfg80211 drivers have to set ieee80211_ptr */
-		if (net_device->ieee80211_ptr)
-			ret = true;
-out:
-	if (net_device)
-		dev_put(net_device);
-	return ret;
-}
-
 struct notifier_block batadv_hard_if_notifier = {
 	.notifier_call = batadv_hard_if_event,
 };
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 01/21] batman-adv: split batadv_is_wifi_iface() into two functions

[Antonio Quartulli]

From: Matthias Schiffer <mschiffer@universe-factory.net>

Previously batadv_is_wifi_iface() did two things at once: looking up a
net_device from an interface index, and determining if it is a wifi device.

The second part is useful itself when the caller already has a net_device
reference.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/hard-interface.c | 84 +++++++++++++++++++++++++----------------
 1 file changed, 52 insertions(+), 32 deletions(-)

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index b6504ea..d5ec67b 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -117,6 +117,58 @@ static int batadv_is_valid_iface(const struct net_device *net_dev)
 	return 1;
 }
 
+/**
+ * batadv_is_wifi_netdev - check if the given net_device struct is a wifi
+ *  interface
+ * @net_device: the device to check
+ *
+ * Returns true if the net device is a 802.11 wireless device, false otherwise.
+ */
+static bool batadv_is_wifi_netdev(struct net_device *net_device)
+{
+#ifdef CONFIG_WIRELESS_EXT
+	/* pre-cfg80211 drivers have to implement WEXT, so it is possible to
+	 * check for wireless_handlers != NULL
+	 */
+	if (net_device->wireless_handlers)
+		return true;
+#endif
+
+	/* cfg80211 drivers have to set ieee80211_ptr */
+	if (net_device->ieee80211_ptr)
+		return true;
+
+	return false;
+}
+
+/**
+ * batadv_is_wifi_iface - check if the given interface represented by ifindex
+ *  is a wifi interface
+ * @ifindex: interface index to check
+ *
+ * Returns true if the interface represented by ifindex is a 802.11 wireless
+ * device, false otherwise.
+ */
+bool batadv_is_wifi_iface(int ifindex)
+{
+	struct net_device *net_device = NULL;
+	bool ret = false;
+
+	if (ifindex == BATADV_NULL_IFINDEX)
+		goto out;
+
+	net_device = dev_get_by_index(&init_net, ifindex);
+	if (!net_device)
+		goto out;
+
+	ret = batadv_is_wifi_netdev(net_device);
+
+out:
+	if (net_device)
+		dev_put(net_device);
+	return ret;
+}
+
 static struct batadv_hard_iface *
 batadv_hardif_get_active(const struct net_device *soft_iface)
 {
@@ -657,38 +709,6 @@ out:
 	return NOTIFY_DONE;
 }
 
-/* This function returns true if the interface represented by ifindex is a
- * 802.11 wireless device
- */
-bool batadv_is_wifi_iface(int ifindex)
-{
-	struct net_device *net_device = NULL;
-	bool ret = false;
-
-	if (ifindex == BATADV_NULL_IFINDEX)
-		goto out;
-
-	net_device = dev_get_by_index(&init_net, ifindex);
-	if (!net_device)
-		goto out;
-
-#ifdef CONFIG_WIRELESS_EXT
-	/* pre-cfg80211 drivers have to implement WEXT, so it is possible to
-	 * check for wireless_handlers != NULL
-	 */
-	if (net_device->wireless_handlers)
-		ret = true;
-	else
-#endif
-		/* cfg80211 drivers have to set ieee80211_ptr */
-		if (net_device->ieee80211_ptr)
-			ret = true;
-out:
-	if (net_device)
-		dev_put(net_device);
-	return ret;
-}
-
 struct notifier_block batadv_hard_if_notifier = {
 	.notifier_call = batadv_hard_if_event,
 };
-- 
1.8.1.5

[PATCH 02/21] batman-adv: send each broadcast only once on non-wireless interfaces

[Antonio Quartulli]

From: Matthias Schiffer <mschiffer@universe-factory.net>

While it makes sense to send each broadcast thrice on 802.11 (WLAN) interfaces
as broadcasts are often unreliable on these, there is no reason to do so on
other interface types.

The increased the overhead can be harmful on low-bandwidth links like VPN
connections over slow internet lines, therefore it is better to reduce the
number of broadcast packets sent on non-wireless links to one.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/hard-interface.c | 4 ++++
 net/batman-adv/main.h           | 5 +++++
 net/batman-adv/send.c           | 5 ++++-
 net/batman-adv/types.h          | 2 ++
 4 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index d5ec67b..4a76ed6 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -593,6 +593,10 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 	INIT_WORK(&hard_iface->cleanup_work,
 		  batadv_hardif_remove_interface_finish);
 
+	hard_iface->num_bcasts = BATADV_NUM_BCASTS_DEFAULT;
+	if (batadv_is_wifi_netdev(net_dev))
+		hard_iface->num_bcasts = BATADV_NUM_BCASTS_WIRELESS;
+
 	/* extra reference for return */
 	atomic_set(&hard_iface->refcount, 2);
 
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 59a0d6a..ea1a3ba 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -76,6 +76,11 @@
 
 #define BATADV_LOG_BUF_LEN 8192	  /* has to be a power of 2 */
 
+/* number of packets to send for broadcasts on different interface types */
+#define BATADV_NUM_BCASTS_DEFAULT 1
+#define BATADV_NUM_BCASTS_WIRELESS 3
+#define BATADV_NUM_BCASTS_MAX 3
+
 /* msecs after which an ARP_REQUEST is sent in broadcast as fallback */
 #define ARP_REQ_DELAY 250
 /* numbers of originator to contact for any PUT/GET DHT operation */
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 263cfd1..eb16b04 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -260,6 +260,9 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
 		if (hard_iface->soft_iface != soft_iface)
 			continue;
 
+		if (forw_packet->num_packets >= hard_iface->num_bcasts)
+			continue;
+
 		/* send a copy of the saved skb */
 		skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC);
 		if (skb1)
@@ -271,7 +274,7 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
 	forw_packet->num_packets++;
 
 	/* if we still have some more bcasts to send */
-	if (forw_packet->num_packets < 3) {
+	if (forw_packet->num_packets < BATADV_NUM_BCASTS_MAX) {
 		_batadv_add_bcast_packet_to_list(bat_priv, forw_packet,
 						 msecs_to_jiffies(5));
 		return;
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index aba8364..5f542bd 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -61,6 +61,7 @@ struct batadv_hard_iface_bat_iv {
  * @if_status: status of the interface for batman-adv
  * @net_dev: pointer to the net_device
  * @frag_seqno: last fragment sequence number sent by this interface
+ * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
  * @hardif_obj: kobject of the per interface sysfs "mesh" directory
  * @refcount: number of contexts the object is used
  * @batman_adv_ptype: packet type describing packets that should be processed by
@@ -76,6 +77,7 @@ struct batadv_hard_iface {
 	char if_status;
 	struct net_device *net_dev;
 	atomic_t frag_seqno;
+	uint8_t num_bcasts;
 	struct kobject *hardif_obj;
 	atomic_t refcount;
 	struct packet_type batman_adv_ptype;
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 02/21] batman-adv: send each broadcast only once on non-wireless interfaces

[Antonio Quartulli]

From: Matthias Schiffer <mschiffer@universe-factory.net>

While it makes sense to send each broadcast thrice on 802.11 (WLAN) interfaces
as broadcasts are often unreliable on these, there is no reason to do so on
other interface types.

The increased the overhead can be harmful on low-bandwidth links like VPN
connections over slow internet lines, therefore it is better to reduce the
number of broadcast packets sent on non-wireless links to one.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/hard-interface.c | 4 ++++
 net/batman-adv/main.h           | 5 +++++
 net/batman-adv/send.c           | 5 ++++-
 net/batman-adv/types.h          | 2 ++
 4 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index d5ec67b..4a76ed6 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -593,6 +593,10 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 	INIT_WORK(&hard_iface->cleanup_work,
 		  batadv_hardif_remove_interface_finish);
 
+	hard_iface->num_bcasts = BATADV_NUM_BCASTS_DEFAULT;
+	if (batadv_is_wifi_netdev(net_dev))
+		hard_iface->num_bcasts = BATADV_NUM_BCASTS_WIRELESS;
+
 	/* extra reference for return */
 	atomic_set(&hard_iface->refcount, 2);
 
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 59a0d6a..ea1a3ba 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -76,6 +76,11 @@
 
 #define BATADV_LOG_BUF_LEN 8192	  /* has to be a power of 2 */
 
+/* number of packets to send for broadcasts on different interface types */
+#define BATADV_NUM_BCASTS_DEFAULT 1
+#define BATADV_NUM_BCASTS_WIRELESS 3
+#define BATADV_NUM_BCASTS_MAX 3
+
 /* msecs after which an ARP_REQUEST is sent in broadcast as fallback */
 #define ARP_REQ_DELAY 250
 /* numbers of originator to contact for any PUT/GET DHT operation */
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 263cfd1..eb16b04 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -260,6 +260,9 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
 		if (hard_iface->soft_iface != soft_iface)
 			continue;
 
+		if (forw_packet->num_packets >= hard_iface->num_bcasts)
+			continue;
+
 		/* send a copy of the saved skb */
 		skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC);
 		if (skb1)
@@ -271,7 +274,7 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
 	forw_packet->num_packets++;
 
 	/* if we still have some more bcasts to send */
-	if (forw_packet->num_packets < 3) {
+	if (forw_packet->num_packets < BATADV_NUM_BCASTS_MAX) {
 		_batadv_add_bcast_packet_to_list(bat_priv, forw_packet,
 						 msecs_to_jiffies(5));
 		return;
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index aba8364..5f542bd 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -61,6 +61,7 @@ struct batadv_hard_iface_bat_iv {
  * @if_status: status of the interface for batman-adv
  * @net_dev: pointer to the net_device
  * @frag_seqno: last fragment sequence number sent by this interface
+ * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
  * @hardif_obj: kobject of the per interface sysfs "mesh" directory
  * @refcount: number of contexts the object is used
  * @batman_adv_ptype: packet type describing packets that should be processed by
@@ -76,6 +77,7 @@ struct batadv_hard_iface {
 	char if_status;
 	struct net_device *net_dev;
 	atomic_t frag_seqno;
+	uint8_t num_bcasts;
 	struct kobject *hardif_obj;
 	atomic_t refcount;
 	struct packet_type batman_adv_ptype;
-- 
1.8.1.5

[PATCH 03/21] batman-adv: fix typos in kernel doc & comments

[Antonio Quartulli]

From: Marek Lindner <lindner_marek@yahoo.de>

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/distributed-arp-table.c | 82 ++++++++++++++++------------------
 1 file changed, 39 insertions(+), 43 deletions(-)

diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 2399920..06345d4 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -45,9 +45,9 @@ static void batadv_dat_start_timer(struct batadv_priv *bat_priv)
 }
 
 /**
- * batadv_dat_entry_free_ref - decrements the dat_entry refcounter and possibly
+ * batadv_dat_entry_free_ref - decrement the dat_entry refcounter and possibly
  * free it
- * @dat_entry: the oentry to free
+ * @dat_entry: the entry to free
  */
 static void batadv_dat_entry_free_ref(struct batadv_dat_entry *dat_entry)
 {
@@ -56,10 +56,10 @@ static void batadv_dat_entry_free_ref(struct batadv_dat_entry *dat_entry)
 }
 
 /**
- * batadv_dat_to_purge - checks whether a dat_entry has to be purged or not
+ * batadv_dat_to_purge - check whether a dat_entry has to be purged or not
  * @dat_entry: the entry to check
  *
- * Returns true if the entry has to be purged now, false otherwise
+ * Returns true if the entry has to be purged now, false otherwise.
  */
 static bool batadv_dat_to_purge(struct batadv_dat_entry *dat_entry)
 {
@@ -75,8 +75,8 @@ static bool batadv_dat_to_purge(struct batadv_dat_entry *dat_entry)
  *	      returns a boolean value: true is the entry has to be deleted,
  *	      false otherwise
  *
- * Loops over each entry in the DAT local storage and delete it if and only if
- * the to_purge function passed as argument returns true
+ * Loops over each entry in the DAT local storage and deletes it if and only if
+ * the to_purge function passed as argument returns true.
  */
 static void __batadv_dat_purge(struct batadv_priv *bat_priv,
 			       bool (*to_purge)(struct batadv_dat_entry *))
@@ -97,7 +97,7 @@ static void __batadv_dat_purge(struct batadv_priv *bat_priv,
 		spin_lock_bh(list_lock);
 		hlist_for_each_entry_safe(dat_entry, node_tmp, head,
 					  hash_entry) {
-			/* if an helper function has been passed as parameter,
+			/* if a helper function has been passed as parameter,
 			 * ask it if the entry has to be purged or not
 			 */
 			if (to_purge && !to_purge(dat_entry))
@@ -134,7 +134,7 @@ static void batadv_dat_purge(struct work_struct *work)
  * @node: node in the local table
  * @data2: second object to compare the node to
  *
- * Returns 1 if the two entry are the same, 0 otherwise
+ * Returns 1 if the two entries are the same, 0 otherwise.
  */
 static int batadv_compare_dat(const struct hlist_node *node, const void *data2)
 {
@@ -149,7 +149,7 @@ static int batadv_compare_dat(const struct hlist_node *node, const void *data2)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the hw_src field in the ARP packet
+ * Returns the value of the hw_src field in the ARP packet.
  */
 static uint8_t *batadv_arp_hw_src(struct sk_buff *skb, int hdr_size)
 {
@@ -166,7 +166,7 @@ static uint8_t *batadv_arp_hw_src(struct sk_buff *skb, int hdr_size)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the ip_src field in the ARP packet
+ * Returns the value of the ip_src field in the ARP packet.
  */
 static __be32 batadv_arp_ip_src(struct sk_buff *skb, int hdr_size)
 {
@@ -178,7 +178,7 @@ static __be32 batadv_arp_ip_src(struct sk_buff *skb, int hdr_size)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the hw_dst field in the ARP packet
+ * Returns the value of the hw_dst field in the ARP packet.
  */
 static uint8_t *batadv_arp_hw_dst(struct sk_buff *skb, int hdr_size)
 {
@@ -190,7 +190,7 @@ static uint8_t *batadv_arp_hw_dst(struct sk_buff *skb, int hdr_size)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the ip_dst field in the ARP packet
+ * Returns the value of the ip_dst field in the ARP packet.
  */
 static __be32 batadv_arp_ip_dst(struct sk_buff *skb, int hdr_size)
 {
@@ -202,7 +202,7 @@ static __be32 batadv_arp_ip_dst(struct sk_buff *skb, int hdr_size)
  * @data: data to hash
  * @size: size of the hash table
  *
- * Returns the selected index in the hash table for the given data
+ * Returns the selected index in the hash table for the given data.
  */
 static uint32_t batadv_hash_dat(const void *data, uint32_t size)
 {
@@ -224,12 +224,12 @@ static uint32_t batadv_hash_dat(const void *data, uint32_t size)
 }
 
 /**
- * batadv_dat_entry_hash_find - looks for a given dat_entry in the local hash
+ * batadv_dat_entry_hash_find - look for a given dat_entry in the local hash
  * table
  * @bat_priv: the bat priv with all the soft interface information
  * @ip: search key
  *
- * Returns the dat_entry if found, NULL otherwise
+ * Returns the dat_entry if found, NULL otherwise.
  */
 static struct batadv_dat_entry *
 batadv_dat_entry_hash_find(struct batadv_priv *bat_priv, __be32 ip)
@@ -343,9 +343,6 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
 	if (hdr_size == 0)
 		return;
 
-	/* if the ARP packet is encapsulated in a batman packet, let's print
-	 * some debug messages
-	 */
 	unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;
 
 	switch (unicast_4addr_packet->u.header.packet_type) {
@@ -409,7 +406,8 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
  * @candidate: orig_node under evaluation
  * @max_orig_node: last selected candidate
  *
- * Returns true if the node has been elected as next candidate or false othrwise
+ * Returns true if the node has been elected as next candidate or false
+ * otherwise.
  */
 static bool batadv_is_orig_node_eligible(struct batadv_dat_candidate *res,
 					 int select, batadv_dat_addr_t tmp_max,
@@ -472,7 +470,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
 	 */
 	cands[select].type = BATADV_DAT_CANDIDATE_NOT_FOUND;
 
-	/* iterate over the originator list and find the node with closest
+	/* iterate over the originator list and find the node with the closest
 	 * dat_address which has not been selected yet
 	 */
 	for (i = 0; i < hash->size; i++) {
@@ -480,7 +478,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
 
 		rcu_read_lock();
 		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
-			/* the dht space is a ring and addresses are unsigned */
+			/* the dht space is a ring using unsigned addresses */
 			tmp_max = BATADV_DAT_ADDR_MAX - orig_node->dat_addr +
 				  ip_key;
 
@@ -512,7 +510,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_dat_select_candidates - selects the nodes which the DHT message has to
+ * batadv_dat_select_candidates - select the nodes which the DHT message has to
  * be sent to
  * @bat_priv: the bat priv with all the soft interface information
  * @ip_dst: ipv4 to look up in the DHT
@@ -521,7 +519,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
  * closest values (from the LEFT, with wrap around if needed) then the hash
  * value of the key. ip_dst is the key.
  *
- * Returns the candidate array of size BATADV_DAT_CANDIDATE_NUM
+ * Returns the candidate array of size BATADV_DAT_CANDIDATE_NUM.
  */
 static struct batadv_dat_candidate *
 batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst)
@@ -558,10 +556,11 @@ batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst)
  * @ip: the DHT key
  * @packet_subtype: unicast4addr packet subtype to use
  *
- * In this function the skb is copied by means of pskb_copy() and is sent as
- * unicast packet to each of the selected candidates
+ * This function copies the skb with pskb_copy() and is sent as unicast packet
+ * to each of the selected candidates.
  *
- * Returns true if the packet is sent to at least one candidate, false otherwise
+ * Returns true if the packet is sent to at least one candidate, false
+ * otherwise.
  */
 static bool batadv_dat_send_data(struct batadv_priv *bat_priv,
 				 struct sk_buff *skb, __be32 ip,
@@ -727,7 +726,7 @@ out:
  * @skb: packet to analyse
  * @hdr_size: size of the possible header before the ARP packet in the skb
  *
- * Returns the ARP type if the skb contains a valid ARP packet, 0 otherwise
+ * Returns the ARP type if the skb contains a valid ARP packet, 0 otherwise.
  */
 static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,
 				    struct sk_buff *skb, int hdr_size)
@@ -754,9 +753,7 @@ static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,
 
 	arphdr = (struct arphdr *)(skb->data + hdr_size + ETH_HLEN);
 
-	/* Check whether the ARP packet carries a valid
-	 * IP information
-	 */
+	/* check whether the ARP packet carries a valid IP information */
 	if (arphdr->ar_hrd != htons(ARPHRD_ETHER))
 		goto out;
 
@@ -784,7 +781,7 @@ static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,
 	if (is_zero_ether_addr(hw_src) || is_multicast_ether_addr(hw_src))
 		goto out;
 
-	/* we don't care about the destination MAC address in ARP requests */
+	/* don't care about the destination MAC address in ARP requests */
 	if (arphdr->ar_op != htons(ARPOP_REQUEST)) {
 		hw_dst = batadv_arp_hw_dst(skb, hdr_size);
 		if (is_zero_ether_addr(hw_dst) ||
@@ -804,8 +801,8 @@ out:
  * @skb: packet to check
  *
  * Returns true if the message has been sent to the dht candidates, false
- * otherwise. In case of true the message has to be enqueued to permit the
- * fallback
+ * otherwise. In case of a positive return value the message has to be enqueued
+ * to permit the fallback.
  */
 bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
 					   struct sk_buff *skb)
@@ -867,7 +864,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
 		batadv_dbg(BATADV_DBG_DAT, bat_priv, "ARP request replied locally\n");
 		ret = true;
 	} else {
-		/* Send the request on the DHT */
+		/* Send the request to the DHT */
 		ret = batadv_dat_send_data(bat_priv, skb, ip_dst,
 					   BATADV_P_DAT_DHT_GET);
 	}
@@ -884,7 +881,7 @@ out:
  * @skb: packet to check
  * @hdr_size: size of the encapsulation header
  *
- * Returns true if the request has been answered, false otherwise
+ * Returns true if the request has been answered, false otherwise.
  */
 bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
 					   struct sk_buff *skb, int hdr_size)
@@ -924,10 +921,9 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
 	if (!skb_new)
 		goto out;
 
-	/* to preserve backwards compatibility, here the node has to answer
-	 * using the same packet type it received for the request. This is due
-	 * to that if a node is not using the 4addr packet format it may not
-	 * support it.
+	/* To preserve backwards compatibility, the node has choose the outgoing
+	 * format based on the incoming request packet type. The assumption is
+	 * that a node not using the 4addr packet format doesn't support it.
 	 */
 	if (hdr_size == sizeof(struct batadv_unicast_4addr_packet))
 		err = batadv_unicast_4addr_send_skb(bat_priv, skb_new,
@@ -977,7 +973,7 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
 	batadv_dat_entry_add(bat_priv, ip_dst, hw_dst);
 
 	/* Send the ARP reply to the candidates for both the IP addresses that
-	 * the node got within the ARP reply
+	 * the node obtained from the ARP reply
 	 */
 	batadv_dat_send_data(bat_priv, skb, ip_src, BATADV_P_DAT_DHT_PUT);
 	batadv_dat_send_data(bat_priv, skb, ip_dst, BATADV_P_DAT_DHT_PUT);
@@ -987,7 +983,7 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
  * DAT storage only
  * @bat_priv: the bat priv with all the soft interface information
  * @skb: packet to check
- * @hdr_size: siaze of the encapsulation header
+ * @hdr_size: size of the encapsulation header
  */
 bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
 					 struct sk_buff *skb, int hdr_size)
@@ -1031,11 +1027,11 @@ out:
 
 /**
  * batadv_dat_drop_broadcast_packet - check if an ARP request has to be dropped
- * (because the node has already got the reply via DAT) or not
+ * (because the node has already obtained the reply via DAT) or not
  * @bat_priv: the bat priv with all the soft interface information
  * @forw_packet: the broadcast packet
  *
- * Returns true if the node can drop the packet, false otherwise
+ * Returns true if the node can drop the packet, false otherwise.
  */
 bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
 				      struct batadv_forw_packet *forw_packet)
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 03/21] batman-adv: fix typos in kernel doc & comments

[Antonio Quartulli]

From: Marek Lindner <lindner_marek@yahoo.de>

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/distributed-arp-table.c | 82 ++++++++++++++++------------------
 1 file changed, 39 insertions(+), 43 deletions(-)

diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 2399920..06345d4 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -45,9 +45,9 @@ static void batadv_dat_start_timer(struct batadv_priv *bat_priv)
 }
 
 /**
- * batadv_dat_entry_free_ref - decrements the dat_entry refcounter and possibly
+ * batadv_dat_entry_free_ref - decrement the dat_entry refcounter and possibly
  * free it
- * @dat_entry: the oentry to free
+ * @dat_entry: the entry to free
  */
 static void batadv_dat_entry_free_ref(struct batadv_dat_entry *dat_entry)
 {
@@ -56,10 +56,10 @@ static void batadv_dat_entry_free_ref(struct batadv_dat_entry *dat_entry)
 }
 
 /**
- * batadv_dat_to_purge - checks whether a dat_entry has to be purged or not
+ * batadv_dat_to_purge - check whether a dat_entry has to be purged or not
  * @dat_entry: the entry to check
  *
- * Returns true if the entry has to be purged now, false otherwise
+ * Returns true if the entry has to be purged now, false otherwise.
  */
 static bool batadv_dat_to_purge(struct batadv_dat_entry *dat_entry)
 {
@@ -75,8 +75,8 @@ static bool batadv_dat_to_purge(struct batadv_dat_entry *dat_entry)
  *	      returns a boolean value: true is the entry has to be deleted,
  *	      false otherwise
  *
- * Loops over each entry in the DAT local storage and delete it if and only if
- * the to_purge function passed as argument returns true
+ * Loops over each entry in the DAT local storage and deletes it if and only if
+ * the to_purge function passed as argument returns true.
  */
 static void __batadv_dat_purge(struct batadv_priv *bat_priv,
 			       bool (*to_purge)(struct batadv_dat_entry *))
@@ -97,7 +97,7 @@ static void __batadv_dat_purge(struct batadv_priv *bat_priv,
 		spin_lock_bh(list_lock);
 		hlist_for_each_entry_safe(dat_entry, node_tmp, head,
 					  hash_entry) {
-			/* if an helper function has been passed as parameter,
+			/* if a helper function has been passed as parameter,
 			 * ask it if the entry has to be purged or not
 			 */
 			if (to_purge && !to_purge(dat_entry))
@@ -134,7 +134,7 @@ static void batadv_dat_purge(struct work_struct *work)
  * @node: node in the local table
  * @data2: second object to compare the node to
  *
- * Returns 1 if the two entry are the same, 0 otherwise
+ * Returns 1 if the two entries are the same, 0 otherwise.
  */
 static int batadv_compare_dat(const struct hlist_node *node, const void *data2)
 {
@@ -149,7 +149,7 @@ static int batadv_compare_dat(const struct hlist_node *node, const void *data2)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the hw_src field in the ARP packet
+ * Returns the value of the hw_src field in the ARP packet.
  */
 static uint8_t *batadv_arp_hw_src(struct sk_buff *skb, int hdr_size)
 {
@@ -166,7 +166,7 @@ static uint8_t *batadv_arp_hw_src(struct sk_buff *skb, int hdr_size)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the ip_src field in the ARP packet
+ * Returns the value of the ip_src field in the ARP packet.
  */
 static __be32 batadv_arp_ip_src(struct sk_buff *skb, int hdr_size)
 {
@@ -178,7 +178,7 @@ static __be32 batadv_arp_ip_src(struct sk_buff *skb, int hdr_size)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the hw_dst field in the ARP packet
+ * Returns the value of the hw_dst field in the ARP packet.
  */
 static uint8_t *batadv_arp_hw_dst(struct sk_buff *skb, int hdr_size)
 {
@@ -190,7 +190,7 @@ static uint8_t *batadv_arp_hw_dst(struct sk_buff *skb, int hdr_size)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the ip_dst field in the ARP packet
+ * Returns the value of the ip_dst field in the ARP packet.
  */
 static __be32 batadv_arp_ip_dst(struct sk_buff *skb, int hdr_size)
 {
@@ -202,7 +202,7 @@ static __be32 batadv_arp_ip_dst(struct sk_buff *skb, int hdr_size)
  * @data: data to hash
  * @size: size of the hash table
  *
- * Returns the selected index in the hash table for the given data
+ * Returns the selected index in the hash table for the given data.
  */
 static uint32_t batadv_hash_dat(const void *data, uint32_t size)
 {
@@ -224,12 +224,12 @@ static uint32_t batadv_hash_dat(const void *data, uint32_t size)
 }
 
 /**
- * batadv_dat_entry_hash_find - looks for a given dat_entry in the local hash
+ * batadv_dat_entry_hash_find - look for a given dat_entry in the local hash
  * table
  * @bat_priv: the bat priv with all the soft interface information
  * @ip: search key
  *
- * Returns the dat_entry if found, NULL otherwise
+ * Returns the dat_entry if found, NULL otherwise.
  */
 static struct batadv_dat_entry *
 batadv_dat_entry_hash_find(struct batadv_priv *bat_priv, __be32 ip)
@@ -343,9 +343,6 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
 	if (hdr_size == 0)
 		return;
 
-	/* if the ARP packet is encapsulated in a batman packet, let's print
-	 * some debug messages
-	 */
 	unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;
 
 	switch (unicast_4addr_packet->u.header.packet_type) {
@@ -409,7 +406,8 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
  * @candidate: orig_node under evaluation
  * @max_orig_node: last selected candidate
  *
- * Returns true if the node has been elected as next candidate or false othrwise
+ * Returns true if the node has been elected as next candidate or false
+ * otherwise.
  */
 static bool batadv_is_orig_node_eligible(struct batadv_dat_candidate *res,
 					 int select, batadv_dat_addr_t tmp_max,
@@ -472,7 +470,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
 	 */
 	cands[select].type = BATADV_DAT_CANDIDATE_NOT_FOUND;
 
-	/* iterate over the originator list and find the node with closest
+	/* iterate over the originator list and find the node with the closest
 	 * dat_address which has not been selected yet
 	 */
 	for (i = 0; i < hash->size; i++) {
@@ -480,7 +478,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
 
 		rcu_read_lock();
 		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
-			/* the dht space is a ring and addresses are unsigned */
+			/* the dht space is a ring using unsigned addresses */
 			tmp_max = BATADV_DAT_ADDR_MAX - orig_node->dat_addr +
 				  ip_key;
 
@@ -512,7 +510,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_dat_select_candidates - selects the nodes which the DHT message has to
+ * batadv_dat_select_candidates - select the nodes which the DHT message has to
  * be sent to
  * @bat_priv: the bat priv with all the soft interface information
  * @ip_dst: ipv4 to look up in the DHT
@@ -521,7 +519,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
  * closest values (from the LEFT, with wrap around if needed) then the hash
  * value of the key. ip_dst is the key.
  *
- * Returns the candidate array of size BATADV_DAT_CANDIDATE_NUM
+ * Returns the candidate array of size BATADV_DAT_CANDIDATE_NUM.
  */
 static struct batadv_dat_candidate *
 batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst)
@@ -558,10 +556,11 @@ batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst)
  * @ip: the DHT key
  * @packet_subtype: unicast4addr packet subtype to use
  *
- * In this function the skb is copied by means of pskb_copy() and is sent as
- * unicast packet to each of the selected candidates
+ * This function copies the skb with pskb_copy() and is sent as unicast packet
+ * to each of the selected candidates.
  *
- * Returns true if the packet is sent to at least one candidate, false otherwise
+ * Returns true if the packet is sent to at least one candidate, false
+ * otherwise.
  */
 static bool batadv_dat_send_data(struct batadv_priv *bat_priv,
 				 struct sk_buff *skb, __be32 ip,
@@ -727,7 +726,7 @@ out:
  * @skb: packet to analyse
  * @hdr_size: size of the possible header before the ARP packet in the skb
  *
- * Returns the ARP type if the skb contains a valid ARP packet, 0 otherwise
+ * Returns the ARP type if the skb contains a valid ARP packet, 0 otherwise.
  */
 static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,
 				    struct sk_buff *skb, int hdr_size)
@@ -754,9 +753,7 @@ static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,
 
 	arphdr = (struct arphdr *)(skb->data + hdr_size + ETH_HLEN);
 
-	/* Check whether the ARP packet carries a valid
-	 * IP information
-	 */
+	/* check whether the ARP packet carries a valid IP information */
 	if (arphdr->ar_hrd != htons(ARPHRD_ETHER))
 		goto out;
 
@@ -784,7 +781,7 @@ static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,
 	if (is_zero_ether_addr(hw_src) || is_multicast_ether_addr(hw_src))
 		goto out;
 
-	/* we don't care about the destination MAC address in ARP requests */
+	/* don't care about the destination MAC address in ARP requests */
 	if (arphdr->ar_op != htons(ARPOP_REQUEST)) {
 		hw_dst = batadv_arp_hw_dst(skb, hdr_size);
 		if (is_zero_ether_addr(hw_dst) ||
@@ -804,8 +801,8 @@ out:
  * @skb: packet to check
  *
  * Returns true if the message has been sent to the dht candidates, false
- * otherwise. In case of true the message has to be enqueued to permit the
- * fallback
+ * otherwise. In case of a positive return value the message has to be enqueued
+ * to permit the fallback.
  */
 bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
 					   struct sk_buff *skb)
@@ -867,7 +864,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
 		batadv_dbg(BATADV_DBG_DAT, bat_priv, "ARP request replied locally\n");
 		ret = true;
 	} else {
-		/* Send the request on the DHT */
+		/* Send the request to the DHT */
 		ret = batadv_dat_send_data(bat_priv, skb, ip_dst,
 					   BATADV_P_DAT_DHT_GET);
 	}
@@ -884,7 +881,7 @@ out:
  * @skb: packet to check
  * @hdr_size: size of the encapsulation header
  *
- * Returns true if the request has been answered, false otherwise
+ * Returns true if the request has been answered, false otherwise.
  */
 bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
 					   struct sk_buff *skb, int hdr_size)
@@ -924,10 +921,9 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
 	if (!skb_new)
 		goto out;
 
-	/* to preserve backwards compatibility, here the node has to answer
-	 * using the same packet type it received for the request. This is due
-	 * to that if a node is not using the 4addr packet format it may not
-	 * support it.
+	/* To preserve backwards compatibility, the node has choose the outgoing
+	 * format based on the incoming request packet type. The assumption is
+	 * that a node not using the 4addr packet format doesn't support it.
 	 */
 	if (hdr_size == sizeof(struct batadv_unicast_4addr_packet))
 		err = batadv_unicast_4addr_send_skb(bat_priv, skb_new,
@@ -977,7 +973,7 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
 	batadv_dat_entry_add(bat_priv, ip_dst, hw_dst);
 
 	/* Send the ARP reply to the candidates for both the IP addresses that
-	 * the node got within the ARP reply
+	 * the node obtained from the ARP reply
 	 */
 	batadv_dat_send_data(bat_priv, skb, ip_src, BATADV_P_DAT_DHT_PUT);
 	batadv_dat_send_data(bat_priv, skb, ip_dst, BATADV_P_DAT_DHT_PUT);
@@ -987,7 +983,7 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
  * DAT storage only
  * @bat_priv: the bat priv with all the soft interface information
  * @skb: packet to check
- * @hdr_size: siaze of the encapsulation header
+ * @hdr_size: size of the encapsulation header
  */
 bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
 					 struct sk_buff *skb, int hdr_size)
@@ -1031,11 +1027,11 @@ out:
 
 /**
  * batadv_dat_drop_broadcast_packet - check if an ARP request has to be dropped
- * (because the node has already got the reply via DAT) or not
+ * (because the node has already obtained the reply via DAT) or not
  * @bat_priv: the bat priv with all the soft interface information
  * @forw_packet: the broadcast packet
  *
- * Returns true if the node can drop the packet, false otherwise
+ * Returns true if the node can drop the packet, false otherwise.
  */
 bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
 				      struct batadv_forw_packet *forw_packet)
-- 
1.8.1.5

[PATCH 04/21] batman-adv: drop useless argument seqno in neighbor creation

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

the sequence number is not stored in struct neigh_node,
therefore there is no need to pass such value to the
neigh_node creation procedure.

At the moment the value is only used by a debug message, but
given the fact that the seqno is not related to the neighbor
object, it is better to print it elsewhere.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 11 ++++-------
 net/batman-adv/originator.c |  5 ++---
 net/batman-adv/originator.h |  2 +-
 3 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 071f288..da239c5 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -33,12 +33,11 @@ static struct batadv_neigh_node *
 batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
 			const uint8_t *neigh_addr,
 			struct batadv_orig_node *orig_node,
-			struct batadv_orig_node *orig_neigh, __be32 seqno)
+			struct batadv_orig_node *orig_neigh)
 {
 	struct batadv_neigh_node *neigh_node;
 
-	neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr,
-					   ntohl(seqno));
+	neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr);
 	if (!neigh_node)
 		goto out;
 
@@ -696,8 +695,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
 
 		neigh_node = batadv_iv_ogm_neigh_new(if_incoming,
 						     ethhdr->h_source,
-						     orig_node, orig_tmp,
-						     batadv_ogm_packet->seqno);
+						     orig_node, orig_tmp);
 
 		batadv_orig_node_free_ref(orig_tmp);
 		if (!neigh_node)
@@ -829,8 +827,7 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
 		neigh_node = batadv_iv_ogm_neigh_new(if_incoming,
 						     orig_neigh_node->orig,
 						     orig_neigh_node,
-						     orig_neigh_node,
-						     batadv_ogm_packet->seqno);
+						     orig_neigh_node);
 
 	if (!neigh_node)
 		goto out;
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index fad1a20..ddf5634 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -92,7 +92,7 @@ batadv_orig_node_get_router(struct batadv_orig_node *orig_node)
 
 struct batadv_neigh_node *
 batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
-		      const uint8_t *neigh_addr, uint32_t seqno)
+		      const uint8_t *neigh_addr)
 {
 	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
 	struct batadv_neigh_node *neigh_node;
@@ -110,8 +110,7 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
 	atomic_set(&neigh_node->refcount, 2);
 
 	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-		   "Creating new neighbor %pM, initial seqno %d\n",
-		   neigh_addr, seqno);
+		   "Creating new neighbor %pM\n", neigh_addr);
 
 out:
 	return neigh_node;
diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h
index 734e5a3..7887b84 100644
--- a/net/batman-adv/originator.h
+++ b/net/batman-adv/originator.h
@@ -31,7 +31,7 @@ struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv,
 					      const uint8_t *addr);
 struct batadv_neigh_node *
 batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
-		      const uint8_t *neigh_addr, uint32_t seqno);
+		      const uint8_t *neigh_addr);
 void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node);
 struct batadv_neigh_node *
 batadv_orig_node_get_router(struct batadv_orig_node *orig_node);
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 04/21] batman-adv: drop useless argument seqno in neighbor creation

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

the sequence number is not stored in struct neigh_node,
therefore there is no need to pass such value to the
neigh_node creation procedure.

At the moment the value is only used by a debug message, but
given the fact that the seqno is not related to the neighbor
object, it is better to print it elsewhere.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 11 ++++-------
 net/batman-adv/originator.c |  5 ++---
 net/batman-adv/originator.h |  2 +-
 3 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 071f288..da239c5 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -33,12 +33,11 @@ static struct batadv_neigh_node *
 batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
 			const uint8_t *neigh_addr,
 			struct batadv_orig_node *orig_node,
-			struct batadv_orig_node *orig_neigh, __be32 seqno)
+			struct batadv_orig_node *orig_neigh)
 {
 	struct batadv_neigh_node *neigh_node;
 
-	neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr,
-					   ntohl(seqno));
+	neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr);
 	if (!neigh_node)
 		goto out;
 
@@ -696,8 +695,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
 
 		neigh_node = batadv_iv_ogm_neigh_new(if_incoming,
 						     ethhdr->h_source,
-						     orig_node, orig_tmp,
-						     batadv_ogm_packet->seqno);
+						     orig_node, orig_tmp);
 
 		batadv_orig_node_free_ref(orig_tmp);
 		if (!neigh_node)
@@ -829,8 +827,7 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
 		neigh_node = batadv_iv_ogm_neigh_new(if_incoming,
 						     orig_neigh_node->orig,
 						     orig_neigh_node,
-						     orig_neigh_node,
-						     batadv_ogm_packet->seqno);
+						     orig_neigh_node);
 
 	if (!neigh_node)
 		goto out;
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index fad1a20..ddf5634 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -92,7 +92,7 @@ batadv_orig_node_get_router(struct batadv_orig_node *orig_node)
 
 struct batadv_neigh_node *
 batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
-		      const uint8_t *neigh_addr, uint32_t seqno)
+		      const uint8_t *neigh_addr)
 {
 	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
 	struct batadv_neigh_node *neigh_node;
@@ -110,8 +110,7 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
 	atomic_set(&neigh_node->refcount, 2);
 
 	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-		   "Creating new neighbor %pM, initial seqno %d\n",
-		   neigh_addr, seqno);
+		   "Creating new neighbor %pM\n", neigh_addr);
 
 out:
 	return neigh_node;
diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h
index 734e5a3..7887b84 100644
--- a/net/batman-adv/originator.h
+++ b/net/batman-adv/originator.h
@@ -31,7 +31,7 @@ struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv,
 					      const uint8_t *addr);
 struct batadv_neigh_node *
 batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
-		      const uint8_t *neigh_addr, uint32_t seqno);
+		      const uint8_t *neigh_addr);
 void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node);
 struct batadv_neigh_node *
 batadv_orig_node_get_router(struct batadv_orig_node *orig_node);
-- 
1.8.1.5

[PATCH 05/21] batman-adv: slightly improve neighbor creation debug message

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

print the interface along with the new neighbor mac address

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/originator.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index ddf5634..f50553a 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -110,7 +110,8 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
 	atomic_set(&neigh_node->refcount, 2);
 
 	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-		   "Creating new neighbor %pM\n", neigh_addr);
+		   "Creating new neighbor %pM on interface %s\n", neigh_addr,
+		   hard_iface->net_dev->name);
 
 out:
 	return neigh_node;
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 05/21] batman-adv: slightly improve neighbor creation debug message

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

print the interface along with the new neighbor mac address

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/originator.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index ddf5634..f50553a 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -110,7 +110,8 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
 	atomic_set(&neigh_node->refcount, 2);
 
 	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-		   "Creating new neighbor %pM\n", neigh_addr);
+		   "Creating new neighbor %pM on interface %s\n", neigh_addr,
+		   hard_iface->net_dev->name);
 
 out:
 	return neigh_node;
-- 
1.8.1.5

[PATCH 06/21] batman-adv: don't check the source address twice

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

The source address has already been checked in
batadv_check_management_packet() upon packet reception and
therefore it does not need to be checked again in
ogm_process()

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index da239c5..6d62e29 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -988,7 +988,7 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
 	struct batadv_neigh_node *orig_neigh_router = NULL;
 	int has_directlink_flag;
 	int is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0;
-	int is_broadcast = 0, is_bidirect;
+	int is_bidirect;
 	bool is_single_hop_neigh = false;
 	bool is_from_best_next_hop = false;
 	int is_duplicate, sameseq, simlar_ttl;
@@ -1051,9 +1051,6 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
 		if (batadv_compare_eth(batadv_ogm_packet->prev_sender,
 				       hard_iface->net_dev->dev_addr))
 			is_my_oldorig = 1;
-
-		if (is_broadcast_ether_addr(ethhdr->h_source))
-			is_broadcast = 1;
 	}
 	rcu_read_unlock();
 
@@ -1071,13 +1068,6 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
 		return;
 	}
 
-	if (is_broadcast) {
-		batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-			   "Drop packet: ignoring all packets with broadcast source addr (sender: %pM)\n",
-			   ethhdr->h_source);
-		return;
-	}
-
 	if (is_my_orig) {
 		unsigned long *word;
 		int offset;
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 06/21] batman-adv: don't check the source address twice

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

The source address has already been checked in
batadv_check_management_packet() upon packet reception and
therefore it does not need to be checked again in
ogm_process()

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index da239c5..6d62e29 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -988,7 +988,7 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
 	struct batadv_neigh_node *orig_neigh_router = NULL;
 	int has_directlink_flag;
 	int is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0;
-	int is_broadcast = 0, is_bidirect;
+	int is_bidirect;
 	bool is_single_hop_neigh = false;
 	bool is_from_best_next_hop = false;
 	int is_duplicate, sameseq, simlar_ttl;
@@ -1051,9 +1051,6 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
 		if (batadv_compare_eth(batadv_ogm_packet->prev_sender,
 				       hard_iface->net_dev->dev_addr))
 			is_my_oldorig = 1;
-
-		if (is_broadcast_ether_addr(ethhdr->h_source))
-			is_broadcast = 1;
 	}
 	rcu_read_unlock();
 
@@ -1071,13 +1068,6 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
 		return;
 	}
 
-	if (is_broadcast) {
-		batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-			   "Drop packet: ignoring all packets with broadcast source addr (sender: %pM)\n",
-			   ethhdr->h_source);
-		return;
-	}
-
 	if (is_my_orig) {
 		unsigned long *word;
 		int offset;
-- 
1.8.1.5

[PATCH 07/21] batman-adv: don't check compat version twice

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

Compatibility version is checked upon packet reception
before calling any handler. For this reason it does need to
be checked once more in the handler itself.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 6d62e29..38183dc 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -1054,13 +1054,6 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
 	}
 	rcu_read_unlock();
 
-	if (batadv_ogm_packet->header.version != BATADV_COMPAT_VERSION) {
-		batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-			   "Drop packet: incompatible batman version (%i)\n",
-			   batadv_ogm_packet->header.version);
-		return;
-	}
-
 	if (is_my_addr) {
 		batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
 			   "Drop packet: received my own broadcast (sender: %pM)\n",
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 07/21] batman-adv: don't check compat version twice

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

Compatibility version is checked upon packet reception
before calling any handler. For this reason it does need to
be checked once more in the handler itself.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 6d62e29..38183dc 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -1054,13 +1054,6 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
 	}
 	rcu_read_unlock();
 
-	if (batadv_ogm_packet->header.version != BATADV_COMPAT_VERSION) {
-		batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-			   "Drop packet: incompatible batman version (%i)\n",
-			   batadv_ogm_packet->header.version);
-		return;
-	}
-
 	if (is_my_addr) {
 		batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
 			   "Drop packet: received my own broadcast (sender: %pM)\n",
-- 
1.8.1.5

[PATCH 08/21] batman-adv: do not silently ignore wrong condition

[Antonio Quartulli]

Only one neigh_node per orig_node should match a given
neighbor address, therefore, if more than one matching
neigh_node is found, a WARNING has to be triggered to let
the user know that something is wrong in the originator
state instead of silently skipping the error.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 38183dc..bd50e0d 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -669,7 +669,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
 		if (batadv_compare_eth(neigh_addr, ethhdr->h_source) &&
 		    tmp_neigh_node->if_incoming == if_incoming &&
 		    atomic_inc_not_zero(&tmp_neigh_node->refcount)) {
-			if (neigh_node)
+			if (WARN(neigh_node, "too many matching neigh_nodes"))
 				batadv_neigh_node_free_ref(neigh_node);
 			neigh_node = tmp_neigh_node;
 			continue;
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 08/21] batman-adv: do not silently ignore wrong condition

[Antonio Quartulli]

Only one neigh_node per orig_node should match a given
neighbor address, therefore, if more than one matching
neigh_node is found, a WARNING has to be triggered to let
the user know that something is wrong in the originator
state instead of silently skipping the error.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 38183dc..bd50e0d 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -669,7 +669,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
 		if (batadv_compare_eth(neigh_addr, ethhdr->h_source) &&
 		    tmp_neigh_node->if_incoming == if_incoming &&
 		    atomic_inc_not_zero(&tmp_neigh_node->refcount)) {
-			if (neigh_node)
+			if (WARN(neigh_node, "too many matching neigh_nodes"))
 				batadv_neigh_node_free_ref(neigh_node);
 			neigh_node = tmp_neigh_node;
 			continue;
-- 
1.8.1.5

[PATCH 09/21] batman-adv: don't initialise batman_iv private members in hard-interface.c

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

hard-interface.c has to do not contain any routing algorithm
specific code.

Allocate the hard-interface with kzalloc() and remove any
useless and algorithm specific member initialisation

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/hard-interface.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 4a76ed6..c478e6b 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -577,7 +577,7 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 
 	dev_hold(net_dev);
 
-	hard_iface = kmalloc(sizeof(*hard_iface), GFP_ATOMIC);
+	hard_iface = kzalloc(sizeof(*hard_iface), GFP_ATOMIC);
 	if (!hard_iface)
 		goto release_dev;
 
@@ -603,12 +603,6 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 	batadv_check_known_mac_addr(hard_iface->net_dev);
 	list_add_tail_rcu(&hard_iface->list, &batadv_hardif_list);
 
-	/* This can't be called via a bat_priv callback because
-	 * we have no bat_priv yet.
-	 */
-	atomic_set(&hard_iface->bat_iv.ogm_seqno, 1);
-	hard_iface->bat_iv.ogm_buff = NULL;
-
 	return hard_iface;
 
 free_if:
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 09/21] batman-adv: don't initialise batman_iv private members in hard-interface.c

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

hard-interface.c has to do not contain any routing algorithm
specific code.

Allocate the hard-interface with kzalloc() and remove any
useless and algorithm specific member initialisation

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/hard-interface.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 4a76ed6..c478e6b 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -577,7 +577,7 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 
 	dev_hold(net_dev);
 
-	hard_iface = kmalloc(sizeof(*hard_iface), GFP_ATOMIC);
+	hard_iface = kzalloc(sizeof(*hard_iface), GFP_ATOMIC);
 	if (!hard_iface)
 		goto release_dev;
 
@@ -603,12 +603,6 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 	batadv_check_known_mac_addr(hard_iface->net_dev);
 	list_add_tail_rcu(&hard_iface->list, &batadv_hardif_list);
 
-	/* This can't be called via a bat_priv callback because
-	 * we have no bat_priv yet.
-	 */
-	atomic_set(&hard_iface->bat_iv.ogm_seqno, 1);
-	hard_iface->bat_iv.ogm_buff = NULL;
-
 	return hard_iface;
 
 free_if:
-- 
1.8.1.5

[PATCH 10/21] batman-adv: use eth_hdr() when it makes sense

[Antonio Quartulli]

Instead of casting the result of skb_mac_header() to
"struct ethhdr *" every time, the eth_hdr inline function
can be use to beautify the code and improve its readability.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c            |  2 +-
 net/batman-adv/bridge_loop_avoidance.c |  8 ++++----
 net/batman-adv/network-coding.c        | 10 +++++-----
 net/batman-adv/routing.c               | 12 ++++++------
 net/batman-adv/send.c                  |  2 +-
 net/batman-adv/soft-interface.c        |  2 +-
 6 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index bd50e0d..ef41be4 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -1268,7 +1268,7 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,
 			   skb->len + ETH_HLEN);
 
 	packet_len = skb_headlen(skb);
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 	packet_buff = skb->data;
 	batadv_ogm_packet = (struct batadv_ogm_packet *)packet_buff;
 
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 379061c..082189e 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -864,7 +864,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 	short vid = -1;
 	int ret;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
 		vhdr = (struct vlan_ethhdr *)ethhdr;
@@ -885,7 +885,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 		return 0;
 
 	/* pskb_may_pull() may have modified the pointers, get ethhdr again */
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 	arphdr = (struct arphdr *)((uint8_t *)ethhdr + headlen);
 
 	/* Check whether the ARP frame carries a valid
@@ -1432,7 +1432,7 @@ int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
 	struct batadv_hard_iface *primary_if;
 	int ret;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	primary_if = batadv_primary_if_get_selected(bat_priv);
 	if (!primary_if)
@@ -1539,7 +1539,7 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
 	if (batadv_bla_process_claim(bat_priv, primary_if, skb))
 		goto handled;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	if (unlikely(atomic_read(&bat_priv->bla.num_requests)))
 		/* don't allow broadcasts while requests are in flight */
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index e84629e..0787a34 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1245,7 +1245,7 @@ static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv,
 		return;
 
 	/* Set the mac header as if we actually sent the packet uncoded */
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 	memcpy(ethhdr->h_source, ethhdr->h_dest, ETH_ALEN);
 	memcpy(ethhdr->h_dest, eth_dst_new, ETH_ALEN);
 
@@ -1423,7 +1423,7 @@ void batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv,
 {
 	struct batadv_unicast_packet *packet;
 	struct batadv_nc_path *nc_path;
-	struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	struct ethhdr *ethhdr = eth_hdr(skb);
 	__be32 packet_id;
 	u8 *payload;
 
@@ -1482,7 +1482,7 @@ out:
 void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv,
 					 struct sk_buff *skb)
 {
-	struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	struct ethhdr *ethhdr = eth_hdr(skb);
 
 	if (batadv_is_my_mac(bat_priv, ethhdr->h_dest))
 		return;
@@ -1533,7 +1533,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
 	skb_reset_network_header(skb);
 
 	/* Reconstruct original mac header */
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 	memcpy(ethhdr, &ethhdr_tmp, sizeof(*ethhdr));
 
 	/* Select the correct unicast header information based on the location
@@ -1677,7 +1677,7 @@ static int batadv_nc_recv_coded_packet(struct sk_buff *skb,
 		return NET_RX_DROP;
 
 	coded_packet = (struct batadv_coded_packet *)skb->data;
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* Verify frame is destined for us */
 	if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest) &&
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index b27a4d7..beeab2e 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -256,7 +256,7 @@ bool batadv_check_management_packet(struct sk_buff *skb,
 	if (unlikely(!pskb_may_pull(skb, header_len)))
 		return false;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* packet with broadcast indication but unicast recipient */
 	if (!is_broadcast_ether_addr(ethhdr->h_dest))
@@ -392,7 +392,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
 	if (unlikely(!pskb_may_pull(skb, hdr_size)))
 		goto out;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* packet with unicast indication but broadcast recipient */
 	if (is_broadcast_ether_addr(ethhdr->h_dest))
@@ -569,7 +569,7 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv,
 	if (unlikely(!pskb_may_pull(skb, hdr_size)))
 		return -ENODATA;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* packet with unicast indication but broadcast recipient */
 	if (is_broadcast_ether_addr(ethhdr->h_dest))
@@ -803,7 +803,7 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
 	struct batadv_orig_node *orig_node = NULL;
 	struct batadv_neigh_node *neigh_node = NULL;
 	struct batadv_unicast_packet *unicast_packet;
-	struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	struct ethhdr *ethhdr = eth_hdr(skb);
 	int ret = NET_RX_DROP;
 	struct sk_buff *new_skb;
 
@@ -1165,7 +1165,7 @@ int batadv_recv_bcast_packet(struct sk_buff *skb,
 	if (unlikely(!pskb_may_pull(skb, hdr_size)))
 		goto out;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* packet with broadcast indication but unicast recipient */
 	if (!is_broadcast_ether_addr(ethhdr->h_dest))
@@ -1265,7 +1265,7 @@ int batadv_recv_vis_packet(struct sk_buff *skb,
 		return NET_RX_DROP;
 
 	vis_packet = (struct batadv_vis_packet *)skb->data;
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* not for me */
 	if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest))
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index eb16b04..ed7072a 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -61,7 +61,7 @@ int batadv_send_skb_packet(struct sk_buff *skb,
 
 	skb_reset_mac_header(skb);
 
-	ethhdr = (struct ethhdr *)skb_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);
 	ethhdr->h_proto = __constant_htons(ETH_P_BATMAN);
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 819dfb0..b26a6cd 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -316,7 +316,7 @@ void batadv_interface_rx(struct net_device *soft_iface,
 	skb_pull_rcsum(skb, hdr_size);
 	skb_reset_mac_header(skb);
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	switch (ntohs(ethhdr->h_proto)) {
 	case ETH_P_8021Q:
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 10/21] batman-adv: use eth_hdr() when it makes sense

[Antonio Quartulli]

Instead of casting the result of skb_mac_header() to
"struct ethhdr *" every time, the eth_hdr inline function
can be use to beautify the code and improve its readability.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c            |  2 +-
 net/batman-adv/bridge_loop_avoidance.c |  8 ++++----
 net/batman-adv/network-coding.c        | 10 +++++-----
 net/batman-adv/routing.c               | 12 ++++++------
 net/batman-adv/send.c                  |  2 +-
 net/batman-adv/soft-interface.c        |  2 +-
 6 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index bd50e0d..ef41be4 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -1268,7 +1268,7 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,
 			   skb->len + ETH_HLEN);
 
 	packet_len = skb_headlen(skb);
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 	packet_buff = skb->data;
 	batadv_ogm_packet = (struct batadv_ogm_packet *)packet_buff;
 
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 379061c..082189e 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -864,7 +864,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 	short vid = -1;
 	int ret;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
 		vhdr = (struct vlan_ethhdr *)ethhdr;
@@ -885,7 +885,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 		return 0;
 
 	/* pskb_may_pull() may have modified the pointers, get ethhdr again */
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 	arphdr = (struct arphdr *)((uint8_t *)ethhdr + headlen);
 
 	/* Check whether the ARP frame carries a valid
@@ -1432,7 +1432,7 @@ int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
 	struct batadv_hard_iface *primary_if;
 	int ret;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	primary_if = batadv_primary_if_get_selected(bat_priv);
 	if (!primary_if)
@@ -1539,7 +1539,7 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
 	if (batadv_bla_process_claim(bat_priv, primary_if, skb))
 		goto handled;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	if (unlikely(atomic_read(&bat_priv->bla.num_requests)))
 		/* don't allow broadcasts while requests are in flight */
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index e84629e..0787a34 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1245,7 +1245,7 @@ static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv,
 		return;
 
 	/* Set the mac header as if we actually sent the packet uncoded */
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 	memcpy(ethhdr->h_source, ethhdr->h_dest, ETH_ALEN);
 	memcpy(ethhdr->h_dest, eth_dst_new, ETH_ALEN);
 
@@ -1423,7 +1423,7 @@ void batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv,
 {
 	struct batadv_unicast_packet *packet;
 	struct batadv_nc_path *nc_path;
-	struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	struct ethhdr *ethhdr = eth_hdr(skb);
 	__be32 packet_id;
 	u8 *payload;
 
@@ -1482,7 +1482,7 @@ out:
 void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv,
 					 struct sk_buff *skb)
 {
-	struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	struct ethhdr *ethhdr = eth_hdr(skb);
 
 	if (batadv_is_my_mac(bat_priv, ethhdr->h_dest))
 		return;
@@ -1533,7 +1533,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
 	skb_reset_network_header(skb);
 
 	/* Reconstruct original mac header */
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 	memcpy(ethhdr, &ethhdr_tmp, sizeof(*ethhdr));
 
 	/* Select the correct unicast header information based on the location
@@ -1677,7 +1677,7 @@ static int batadv_nc_recv_coded_packet(struct sk_buff *skb,
 		return NET_RX_DROP;
 
 	coded_packet = (struct batadv_coded_packet *)skb->data;
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* Verify frame is destined for us */
 	if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest) &&
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index b27a4d7..beeab2e 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -256,7 +256,7 @@ bool batadv_check_management_packet(struct sk_buff *skb,
 	if (unlikely(!pskb_may_pull(skb, header_len)))
 		return false;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* packet with broadcast indication but unicast recipient */
 	if (!is_broadcast_ether_addr(ethhdr->h_dest))
@@ -392,7 +392,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
 	if (unlikely(!pskb_may_pull(skb, hdr_size)))
 		goto out;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* packet with unicast indication but broadcast recipient */
 	if (is_broadcast_ether_addr(ethhdr->h_dest))
@@ -569,7 +569,7 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv,
 	if (unlikely(!pskb_may_pull(skb, hdr_size)))
 		return -ENODATA;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* packet with unicast indication but broadcast recipient */
 	if (is_broadcast_ether_addr(ethhdr->h_dest))
@@ -803,7 +803,7 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
 	struct batadv_orig_node *orig_node = NULL;
 	struct batadv_neigh_node *neigh_node = NULL;
 	struct batadv_unicast_packet *unicast_packet;
-	struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	struct ethhdr *ethhdr = eth_hdr(skb);
 	int ret = NET_RX_DROP;
 	struct sk_buff *new_skb;
 
@@ -1165,7 +1165,7 @@ int batadv_recv_bcast_packet(struct sk_buff *skb,
 	if (unlikely(!pskb_may_pull(skb, hdr_size)))
 		goto out;
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* packet with broadcast indication but unicast recipient */
 	if (!is_broadcast_ether_addr(ethhdr->h_dest))
@@ -1265,7 +1265,7 @@ int batadv_recv_vis_packet(struct sk_buff *skb,
 		return NET_RX_DROP;
 
 	vis_packet = (struct batadv_vis_packet *)skb->data;
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	/* not for me */
 	if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest))
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index eb16b04..ed7072a 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -61,7 +61,7 @@ int batadv_send_skb_packet(struct sk_buff *skb,
 
 	skb_reset_mac_header(skb);
 
-	ethhdr = (struct ethhdr *)skb_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);
 	ethhdr->h_proto = __constant_htons(ETH_P_BATMAN);
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 819dfb0..b26a6cd 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -316,7 +316,7 @@ void batadv_interface_rx(struct net_device *soft_iface,
 	skb_pull_rcsum(skb, hdr_size);
 	skb_reset_mac_header(skb);
 
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
+	ethhdr = eth_hdr(skb);
 
 	switch (ntohs(ethhdr->h_proto)) {
 	case ETH_P_8021Q:
-- 
1.8.1.5

[PATCH 11/21] batman-adv: move ring_buffer helper functions in bat_iv_ogm

[Antonio Quartulli]

the two lonely ring_buffer helper functions are used by the
bat_iv_ogm module only and therefore they can be moved
inside it.

Reported-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/Makefile      |  1 -
 net/batman-adv/bat_iv_ogm.c  | 43 ++++++++++++++++++++++++++++++++++++-
 net/batman-adv/ring_buffer.c | 51 --------------------------------------------
 net/batman-adv/ring_buffer.h | 27 -----------------------
 4 files changed, 42 insertions(+), 80 deletions(-)
 delete mode 100644 net/batman-adv/ring_buffer.c
 delete mode 100644 net/batman-adv/ring_buffer.h

diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile
index acbac2a..489bb36 100644
--- a/net/batman-adv/Makefile
+++ b/net/batman-adv/Makefile
@@ -32,7 +32,6 @@ batman-adv-y += icmp_socket.o
 batman-adv-y += main.o
 batman-adv-$(CONFIG_BATMAN_ADV_NC) += network-coding.o
 batman-adv-y += originator.o
-batman-adv-y += ring_buffer.o
 batman-adv-y += routing.o
 batman-adv-y += send.o
 batman-adv-y += soft-interface.o
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index ef41be4..31c2891 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -19,7 +19,6 @@
 
 #include "main.h"
 #include "translation-table.h"
-#include "ring_buffer.h"
 #include "originator.h"
 #include "routing.h"
 #include "gateway_common.h"
@@ -29,6 +28,48 @@
 #include "bat_algo.h"
 #include "network-coding.h"
 
+/**
+ * batadv_ring_buffer_set - update the ring buffer with the given value
+ * @lq_recv: pointer to the ring buffer
+ * @lq_index: index to store the value at
+ * @value: value to store in the ring buffer
+ */
+static void batadv_ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index,
+				   uint8_t value)
+{
+	lq_recv[*lq_index] = value;
+	*lq_index = (*lq_index + 1) % BATADV_TQ_GLOBAL_WINDOW_SIZE;
+}
+
+/**
+ * batadv_ring_buffer_set - compute the average of all non-zero values stored
+ * in the given ring buffer
+ * @lq_recv: pointer to the ring buffer
+ *
+ * Returns computed average value.
+ */
+static uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[])
+{
+	const uint8_t *ptr;
+	uint16_t count = 0, i = 0, sum = 0;
+
+	ptr = lq_recv;
+
+	while (i < BATADV_TQ_GLOBAL_WINDOW_SIZE) {
+		if (*ptr != 0) {
+			count++;
+			sum += *ptr;
+		}
+
+		i++;
+		ptr++;
+	}
+
+	if (count == 0)
+		return 0;
+
+	return (uint8_t)(sum / count);
+}
 static struct batadv_neigh_node *
 batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
 			const uint8_t *neigh_addr,
diff --git a/net/batman-adv/ring_buffer.c b/net/batman-adv/ring_buffer.c
deleted file mode 100644
index ccab0bb..0000000
--- a/net/batman-adv/ring_buffer.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * 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, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- */
-
-#include "main.h"
-#include "ring_buffer.h"
-
-void batadv_ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index,
-			    uint8_t value)
-{
-	lq_recv[*lq_index] = value;
-	*lq_index = (*lq_index + 1) % BATADV_TQ_GLOBAL_WINDOW_SIZE;
-}
-
-uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[])
-{
-	const uint8_t *ptr;
-	uint16_t count = 0, i = 0, sum = 0;
-
-	ptr = lq_recv;
-
-	while (i < BATADV_TQ_GLOBAL_WINDOW_SIZE) {
-		if (*ptr != 0) {
-			count++;
-			sum += *ptr;
-		}
-
-		i++;
-		ptr++;
-	}
-
-	if (count == 0)
-		return 0;
-
-	return (uint8_t)(sum / count);
-}
diff --git a/net/batman-adv/ring_buffer.h b/net/batman-adv/ring_buffer.h
deleted file mode 100644
index 3f92ae2..0000000
--- a/net/batman-adv/ring_buffer.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * 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, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- */
-
-#ifndef _NET_BATMAN_ADV_RING_BUFFER_H_
-#define _NET_BATMAN_ADV_RING_BUFFER_H_
-
-void batadv_ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index,
-			    uint8_t value);
-uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[]);
-
-#endif /* _NET_BATMAN_ADV_RING_BUFFER_H_ */
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 11/21] batman-adv: move ring_buffer helper functions in bat_iv_ogm

[Antonio Quartulli]

the two lonely ring_buffer helper functions are used by the
bat_iv_ogm module only and therefore they can be moved
inside it.

Reported-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/Makefile      |  1 -
 net/batman-adv/bat_iv_ogm.c  | 43 ++++++++++++++++++++++++++++++++++++-
 net/batman-adv/ring_buffer.c | 51 --------------------------------------------
 net/batman-adv/ring_buffer.h | 27 -----------------------
 4 files changed, 42 insertions(+), 80 deletions(-)
 delete mode 100644 net/batman-adv/ring_buffer.c
 delete mode 100644 net/batman-adv/ring_buffer.h

diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile
index acbac2a..489bb36 100644
--- a/net/batman-adv/Makefile
+++ b/net/batman-adv/Makefile
@@ -32,7 +32,6 @@ batman-adv-y += icmp_socket.o
 batman-adv-y += main.o
 batman-adv-$(CONFIG_BATMAN_ADV_NC) += network-coding.o
 batman-adv-y += originator.o
-batman-adv-y += ring_buffer.o
 batman-adv-y += routing.o
 batman-adv-y += send.o
 batman-adv-y += soft-interface.o
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index ef41be4..31c2891 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -19,7 +19,6 @@
 
 #include "main.h"
 #include "translation-table.h"
-#include "ring_buffer.h"
 #include "originator.h"
 #include "routing.h"
 #include "gateway_common.h"
@@ -29,6 +28,48 @@
 #include "bat_algo.h"
 #include "network-coding.h"
 
+/**
+ * batadv_ring_buffer_set - update the ring buffer with the given value
+ * @lq_recv: pointer to the ring buffer
+ * @lq_index: index to store the value at
+ * @value: value to store in the ring buffer
+ */
+static void batadv_ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index,
+				   uint8_t value)
+{
+	lq_recv[*lq_index] = value;
+	*lq_index = (*lq_index + 1) % BATADV_TQ_GLOBAL_WINDOW_SIZE;
+}
+
+/**
+ * batadv_ring_buffer_set - compute the average of all non-zero values stored
+ * in the given ring buffer
+ * @lq_recv: pointer to the ring buffer
+ *
+ * Returns computed average value.
+ */
+static uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[])
+{
+	const uint8_t *ptr;
+	uint16_t count = 0, i = 0, sum = 0;
+
+	ptr = lq_recv;
+
+	while (i < BATADV_TQ_GLOBAL_WINDOW_SIZE) {
+		if (*ptr != 0) {
+			count++;
+			sum += *ptr;
+		}
+
+		i++;
+		ptr++;
+	}
+
+	if (count == 0)
+		return 0;
+
+	return (uint8_t)(sum / count);
+}
 static struct batadv_neigh_node *
 batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
 			const uint8_t *neigh_addr,
diff --git a/net/batman-adv/ring_buffer.c b/net/batman-adv/ring_buffer.c
deleted file mode 100644
index ccab0bb..0000000
--- a/net/batman-adv/ring_buffer.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * 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, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- */
-
-#include "main.h"
-#include "ring_buffer.h"
-
-void batadv_ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index,
-			    uint8_t value)
-{
-	lq_recv[*lq_index] = value;
-	*lq_index = (*lq_index + 1) % BATADV_TQ_GLOBAL_WINDOW_SIZE;
-}
-
-uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[])
-{
-	const uint8_t *ptr;
-	uint16_t count = 0, i = 0, sum = 0;
-
-	ptr = lq_recv;
-
-	while (i < BATADV_TQ_GLOBAL_WINDOW_SIZE) {
-		if (*ptr != 0) {
-			count++;
-			sum += *ptr;
-		}
-
-		i++;
-		ptr++;
-	}
-
-	if (count == 0)
-		return 0;
-
-	return (uint8_t)(sum / count);
-}
diff --git a/net/batman-adv/ring_buffer.h b/net/batman-adv/ring_buffer.h
deleted file mode 100644
index 3f92ae2..0000000
--- a/net/batman-adv/ring_buffer.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * 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, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- */
-
-#ifndef _NET_BATMAN_ADV_RING_BUFFER_H_
-#define _NET_BATMAN_ADV_RING_BUFFER_H_
-
-void batadv_ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index,
-			    uint8_t value);
-uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[]);
-
-#endif /* _NET_BATMAN_ADV_RING_BUFFER_H_ */
-- 
1.8.1.5

[PATCH 12/21] batman-adv: move batadv_slide_own_bcast_window to bat_iv_ogm.c

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

batadv_slide_own_bcast_window() is used only in bat_iv_ogm.c
and it is currently touching only batman_iv specific
attributes.

Move it into bat_iv_ogm.c and make it static.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 37 ++++++++++++++++++++++++++++++++++++-
 net/batman-adv/routing.c    | 29 -----------------------------
 net/batman-adv/routing.h    |  1 -
 3 files changed, 36 insertions(+), 31 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 31c2891..42b7a94 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -630,6 +630,41 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node,
 				if_incoming, 0, batadv_iv_ogm_fwd_send_time());
 }
 
+/**
+ * batadv_iv_ogm_slide_own_bcast_window - bitshift own OGM broadcast windows for
+ * the given interface
+ * @hard_iface: the interface for which the windows have to be shifted
+ */
+static void
+batadv_iv_ogm_slide_own_bcast_window(struct batadv_hard_iface *hard_iface)
+{
+	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
+	struct batadv_hashtable *hash = bat_priv->orig_hash;
+	struct hlist_head *head;
+	struct batadv_orig_node *orig_node;
+	unsigned long *word;
+	uint32_t i;
+	size_t word_index;
+	uint8_t *w;
+
+	for (i = 0; i < hash->size; i++) {
+		head = &hash->table[i];
+
+		rcu_read_lock();
+		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
+			spin_lock_bh(&orig_node->ogm_cnt_lock);
+			word_index = hard_iface->if_num * BATADV_NUM_WORDS;
+			word = &(orig_node->bcast_own[word_index]);
+
+			batadv_bit_get_packet(bat_priv, word, 1, 0);
+			w = &orig_node->bcast_own_sum[hard_iface->if_num];
+			*w = bitmap_weight(word, BATADV_TQ_LOCAL_WINDOW_SIZE);
+			spin_unlock_bh(&orig_node->ogm_cnt_lock);
+		}
+		rcu_read_unlock();
+	}
+}
+
 static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
 {
 	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
@@ -674,7 +709,7 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
 		batadv_ogm_packet->gw_flags = BATADV_NO_FLAGS;
 	}
 
-	batadv_slide_own_bcast_window(hard_iface);
+	batadv_iv_ogm_slide_own_bcast_window(hard_iface);
 	batadv_iv_ogm_queue_add(bat_priv, hard_iface->bat_iv.ogm_buff,
 				hard_iface->bat_iv.ogm_buff_len, hard_iface, 1,
 				batadv_iv_ogm_emit_send_time(bat_priv));
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index beeab2e..fad0846 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -34,35 +34,6 @@
 static int batadv_route_unicast_packet(struct sk_buff *skb,
 				       struct batadv_hard_iface *recv_if);
 
-void batadv_slide_own_bcast_window(struct batadv_hard_iface *hard_iface)
-{
-	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
-	struct batadv_hashtable *hash = bat_priv->orig_hash;
-	struct hlist_head *head;
-	struct batadv_orig_node *orig_node;
-	unsigned long *word;
-	uint32_t i;
-	size_t word_index;
-	uint8_t *w;
-
-	for (i = 0; i < hash->size; i++) {
-		head = &hash->table[i];
-
-		rcu_read_lock();
-		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
-			spin_lock_bh(&orig_node->ogm_cnt_lock);
-			word_index = hard_iface->if_num * BATADV_NUM_WORDS;
-			word = &(orig_node->bcast_own[word_index]);
-
-			batadv_bit_get_packet(bat_priv, word, 1, 0);
-			w = &orig_node->bcast_own_sum[hard_iface->if_num];
-			*w = bitmap_weight(word, BATADV_TQ_LOCAL_WINDOW_SIZE);
-			spin_unlock_bh(&orig_node->ogm_cnt_lock);
-		}
-		rcu_read_unlock();
-	}
-}
-
 static void _batadv_update_route(struct batadv_priv *bat_priv,
 				 struct batadv_orig_node *orig_node,
 				 struct batadv_neigh_node *neigh_node)
diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h
index 99eeafa..72a29bd 100644
--- a/net/batman-adv/routing.h
+++ b/net/batman-adv/routing.h
@@ -20,7 +20,6 @@
 #ifndef _NET_BATMAN_ADV_ROUTING_H_
 #define _NET_BATMAN_ADV_ROUTING_H_
 
-void batadv_slide_own_bcast_window(struct batadv_hard_iface *hard_iface);
 bool batadv_check_management_packet(struct sk_buff *skb,
 				    struct batadv_hard_iface *hard_iface,
 				    int header_len);
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 12/21] batman-adv: move batadv_slide_own_bcast_window to bat_iv_ogm.c

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

batadv_slide_own_bcast_window() is used only in bat_iv_ogm.c
and it is currently touching only batman_iv specific
attributes.

Move it into bat_iv_ogm.c and make it static.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 37 ++++++++++++++++++++++++++++++++++++-
 net/batman-adv/routing.c    | 29 -----------------------------
 net/batman-adv/routing.h    |  1 -
 3 files changed, 36 insertions(+), 31 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 31c2891..42b7a94 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -630,6 +630,41 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node,
 				if_incoming, 0, batadv_iv_ogm_fwd_send_time());
 }
 
+/**
+ * batadv_iv_ogm_slide_own_bcast_window - bitshift own OGM broadcast windows for
+ * the given interface
+ * @hard_iface: the interface for which the windows have to be shifted
+ */
+static void
+batadv_iv_ogm_slide_own_bcast_window(struct batadv_hard_iface *hard_iface)
+{
+	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
+	struct batadv_hashtable *hash = bat_priv->orig_hash;
+	struct hlist_head *head;
+	struct batadv_orig_node *orig_node;
+	unsigned long *word;
+	uint32_t i;
+	size_t word_index;
+	uint8_t *w;
+
+	for (i = 0; i < hash->size; i++) {
+		head = &hash->table[i];
+
+		rcu_read_lock();
+		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
+			spin_lock_bh(&orig_node->ogm_cnt_lock);
+			word_index = hard_iface->if_num * BATADV_NUM_WORDS;
+			word = &(orig_node->bcast_own[word_index]);
+
+			batadv_bit_get_packet(bat_priv, word, 1, 0);
+			w = &orig_node->bcast_own_sum[hard_iface->if_num];
+			*w = bitmap_weight(word, BATADV_TQ_LOCAL_WINDOW_SIZE);
+			spin_unlock_bh(&orig_node->ogm_cnt_lock);
+		}
+		rcu_read_unlock();
+	}
+}
+
 static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
 {
 	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
@@ -674,7 +709,7 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
 		batadv_ogm_packet->gw_flags = BATADV_NO_FLAGS;
 	}
 
-	batadv_slide_own_bcast_window(hard_iface);
+	batadv_iv_ogm_slide_own_bcast_window(hard_iface);
 	batadv_iv_ogm_queue_add(bat_priv, hard_iface->bat_iv.ogm_buff,
 				hard_iface->bat_iv.ogm_buff_len, hard_iface, 1,
 				batadv_iv_ogm_emit_send_time(bat_priv));
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index beeab2e..fad0846 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -34,35 +34,6 @@
 static int batadv_route_unicast_packet(struct sk_buff *skb,
 				       struct batadv_hard_iface *recv_if);
 
-void batadv_slide_own_bcast_window(struct batadv_hard_iface *hard_iface)
-{
-	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
-	struct batadv_hashtable *hash = bat_priv->orig_hash;
-	struct hlist_head *head;
-	struct batadv_orig_node *orig_node;
-	unsigned long *word;
-	uint32_t i;
-	size_t word_index;
-	uint8_t *w;
-
-	for (i = 0; i < hash->size; i++) {
-		head = &hash->table[i];
-
-		rcu_read_lock();
-		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
-			spin_lock_bh(&orig_node->ogm_cnt_lock);
-			word_index = hard_iface->if_num * BATADV_NUM_WORDS;
-			word = &(orig_node->bcast_own[word_index]);
-
-			batadv_bit_get_packet(bat_priv, word, 1, 0);
-			w = &orig_node->bcast_own_sum[hard_iface->if_num];
-			*w = bitmap_weight(word, BATADV_TQ_LOCAL_WINDOW_SIZE);
-			spin_unlock_bh(&orig_node->ogm_cnt_lock);
-		}
-		rcu_read_unlock();
-	}
-}
-
 static void _batadv_update_route(struct batadv_priv *bat_priv,
 				 struct batadv_orig_node *orig_node,
 				 struct batadv_neigh_node *neigh_node)
diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h
index 99eeafa..72a29bd 100644
--- a/net/batman-adv/routing.h
+++ b/net/batman-adv/routing.h
@@ -20,7 +20,6 @@
 #ifndef _NET_BATMAN_ADV_ROUTING_H_
 #define _NET_BATMAN_ADV_ROUTING_H_
 
-void batadv_slide_own_bcast_window(struct batadv_hard_iface *hard_iface);
 bool batadv_check_management_packet(struct sk_buff *skb,
 				    struct batadv_hard_iface *hard_iface,
 				    int header_len);
-- 
1.8.1.5

[PATCH 13/21] batman-adv: refactor batadv_tt_local_event()

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

Instead of passing a generic combination of flags as
argument, it is easier to pass the entire tt_common
structure (containing the flags already set) plus a
bitfield of event flags that will be unified with
the already existing ones before inserting the client
in the event queue.
In this way invocations of the modified function can be
simplified.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/translation-table.c | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 9e87485..d35b739 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -163,10 +163,19 @@ batadv_tt_orig_list_entry_free_ref(struct batadv_tt_orig_list_entry *orig_entry)
 	call_rcu(&orig_entry->rcu, batadv_tt_orig_list_entry_free_rcu);
 }
 
+/**
+ * batadv_tt_local_event - store a local TT event (ADD/DEL)
+ * @bat_priv: the bat priv with all the soft interface information
+ * @tt_local_entry: the TT entry involved in the event
+ * @event_flags: flags to store in the event structure
+ */
 static void batadv_tt_local_event(struct batadv_priv *bat_priv,
-				  const uint8_t *addr, uint8_t flags)
+				  struct batadv_tt_local_entry *tt_local_entry,
+				  uint8_t event_flags)
 {
 	struct batadv_tt_change_node *tt_change_node, *entry, *safe;
+	struct batadv_tt_common_entry *common = &tt_local_entry->common;
+	uint8_t flags = common->flags | event_flags;
 	bool event_removed = false;
 	bool del_op_requested, del_op_entry;
 
@@ -176,7 +185,7 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv,
 		return;
 
 	tt_change_node->change.flags = flags;
-	memcpy(tt_change_node->change.addr, addr, ETH_ALEN);
+	memcpy(tt_change_node->change.addr, common->addr, ETH_ALEN);
 
 	del_op_requested = flags & BATADV_TT_CLIENT_DEL;
 
@@ -184,7 +193,7 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv,
 	spin_lock_bh(&bat_priv->tt.changes_list_lock);
 	list_for_each_entry_safe(entry, safe, &bat_priv->tt.changes_list,
 				 list) {
-		if (!batadv_compare_eth(entry->change.addr, addr))
+		if (!batadv_compare_eth(entry->change.addr, common->addr))
 			continue;
 
 		/* DEL+ADD in the same orig interval have no effect and can be
@@ -332,7 +341,7 @@ void batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
 	}
 
 add_event:
-	batadv_tt_local_event(bat_priv, addr, tt_local->common.flags);
+	batadv_tt_local_event(bat_priv, tt_local, BATADV_NO_FLAGS);
 
 check_roaming:
 	/* Check whether it is a roaming, but don't do anything if the roaming
@@ -529,8 +538,7 @@ batadv_tt_local_set_pending(struct batadv_priv *bat_priv,
 			    struct batadv_tt_local_entry *tt_local_entry,
 			    uint16_t flags, const char *message)
 {
-	batadv_tt_local_event(bat_priv, tt_local_entry->common.addr,
-			      tt_local_entry->common.flags | flags);
+	batadv_tt_local_event(bat_priv, tt_local_entry, flags);
 
 	/* The local client has to be marked as "pending to be removed" but has
 	 * to be kept in the table in order to send it in a full table
@@ -584,8 +592,7 @@ uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
 	/* if this client has been added right now, it is possible to
 	 * immediately purge it
 	 */
-	batadv_tt_local_event(bat_priv, tt_local_entry->common.addr,
-			      curr_flags | BATADV_TT_CLIENT_DEL);
+	batadv_tt_local_event(bat_priv, tt_local_entry, BATADV_TT_CLIENT_DEL);
 	hlist_del_rcu(&tt_local_entry->common.hash_entry);
 	batadv_tt_local_entry_free_ref(tt_local_entry);
 
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 13/21] batman-adv: refactor batadv_tt_local_event()

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

Instead of passing a generic combination of flags as
argument, it is easier to pass the entire tt_common
structure (containing the flags already set) plus a
bitfield of event flags that will be unified with
the already existing ones before inserting the client
in the event queue.
In this way invocations of the modified function can be
simplified.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/translation-table.c | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 9e87485..d35b739 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -163,10 +163,19 @@ batadv_tt_orig_list_entry_free_ref(struct batadv_tt_orig_list_entry *orig_entry)
 	call_rcu(&orig_entry->rcu, batadv_tt_orig_list_entry_free_rcu);
 }
 
+/**
+ * batadv_tt_local_event - store a local TT event (ADD/DEL)
+ * @bat_priv: the bat priv with all the soft interface information
+ * @tt_local_entry: the TT entry involved in the event
+ * @event_flags: flags to store in the event structure
+ */
 static void batadv_tt_local_event(struct batadv_priv *bat_priv,
-				  const uint8_t *addr, uint8_t flags)
+				  struct batadv_tt_local_entry *tt_local_entry,
+				  uint8_t event_flags)
 {
 	struct batadv_tt_change_node *tt_change_node, *entry, *safe;
+	struct batadv_tt_common_entry *common = &tt_local_entry->common;
+	uint8_t flags = common->flags | event_flags;
 	bool event_removed = false;
 	bool del_op_requested, del_op_entry;
 
@@ -176,7 +185,7 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv,
 		return;
 
 	tt_change_node->change.flags = flags;
-	memcpy(tt_change_node->change.addr, addr, ETH_ALEN);
+	memcpy(tt_change_node->change.addr, common->addr, ETH_ALEN);
 
 	del_op_requested = flags & BATADV_TT_CLIENT_DEL;
 
@@ -184,7 +193,7 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv,
 	spin_lock_bh(&bat_priv->tt.changes_list_lock);
 	list_for_each_entry_safe(entry, safe, &bat_priv->tt.changes_list,
 				 list) {
-		if (!batadv_compare_eth(entry->change.addr, addr))
+		if (!batadv_compare_eth(entry->change.addr, common->addr))
 			continue;
 
 		/* DEL+ADD in the same orig interval have no effect and can be
@@ -332,7 +341,7 @@ void batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
 	}
 
 add_event:
-	batadv_tt_local_event(bat_priv, addr, tt_local->common.flags);
+	batadv_tt_local_event(bat_priv, tt_local, BATADV_NO_FLAGS);
 
 check_roaming:
 	/* Check whether it is a roaming, but don't do anything if the roaming
@@ -529,8 +538,7 @@ batadv_tt_local_set_pending(struct batadv_priv *bat_priv,
 			    struct batadv_tt_local_entry *tt_local_entry,
 			    uint16_t flags, const char *message)
 {
-	batadv_tt_local_event(bat_priv, tt_local_entry->common.addr,
-			      tt_local_entry->common.flags | flags);
+	batadv_tt_local_event(bat_priv, tt_local_entry, flags);
 
 	/* The local client has to be marked as "pending to be removed" but has
 	 * to be kept in the table in order to send it in a full table
@@ -584,8 +592,7 @@ uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
 	/* if this client has been added right now, it is possible to
 	 * immediately purge it
 	 */
-	batadv_tt_local_event(bat_priv, tt_local_entry->common.addr,
-			      curr_flags | BATADV_TT_CLIENT_DEL);
+	batadv_tt_local_event(bat_priv, tt_local_entry, BATADV_TT_CLIENT_DEL);
 	hlist_del_rcu(&tt_local_entry->common.hash_entry);
 	batadv_tt_local_entry_free_ref(tt_local_entry);
 
-- 
1.8.1.5

[PATCH 14/21] batman-adv: don't deal with NET_IP_ALIGN manually

[Antonio Quartulli]

Instead of dealing with NET_IP_ALIGN during allocation and
headroom reservation, it is possible to use
netdev_alloc_skb_ip_align() which transparently allocate
and reserve the correct amount of data

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c        |  6 +++---
 net/batman-adv/icmp_socket.c       |  4 ++--
 net/batman-adv/translation-table.c | 20 ++++++++++----------
 net/batman-adv/vis.c               | 12 ++++++------
 4 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 42b7a94..5b0a043 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -453,16 +453,16 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff,
 	else
 		skb_size = packet_len;
 
-	skb_size += ETH_HLEN + NET_IP_ALIGN;
+	skb_size += ETH_HLEN;
 
-	forw_packet_aggr->skb = dev_alloc_skb(skb_size);
+	forw_packet_aggr->skb = netdev_alloc_skb_ip_align(NULL, skb_size);
 	if (!forw_packet_aggr->skb) {
 		if (!own_packet)
 			atomic_inc(&bat_priv->batman_queue_left);
 		kfree(forw_packet_aggr);
 		goto out;
 	}
-	skb_reserve(forw_packet_aggr->skb, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(forw_packet_aggr->skb, ETH_HLEN);
 
 	INIT_HLIST_NODE(&forw_packet_aggr->list);
 
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index 0ba6c89..b27508b 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -177,13 +177,13 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
 	if (len >= sizeof(struct batadv_icmp_packet_rr))
 		packet_len = sizeof(struct batadv_icmp_packet_rr);
 
-	skb = dev_alloc_skb(packet_len + ETH_HLEN + NET_IP_ALIGN);
+	skb = netdev_alloc_skb_ip_align(NULL, packet_len + ETH_HLEN);
 	if (!skb) {
 		len = -ENOMEM;
 		goto out;
 	}
 
-	skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(skb, ETH_HLEN);
 	icmp_packet = (struct batadv_icmp_packet_rr *)skb_put(skb, packet_len);
 
 	if (copy_from_user(icmp_packet, buff, packet_len)) {
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index d35b739..52808c4 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1607,11 +1607,11 @@ batadv_tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
 	tt_tot = tt_len / sizeof(struct batadv_tt_change);
 
 	len = tt_query_size + tt_len;
-	skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+	skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
 	if (!skb)
 		goto out;
 
-	skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(skb, ETH_HLEN);
 	tt_response = (struct batadv_tt_query_packet *)skb_put(skb, len);
 	tt_response->ttvn = ttvn;
 
@@ -1672,11 +1672,11 @@ static int batadv_send_tt_request(struct batadv_priv *bat_priv,
 	if (!tt_req_node)
 		goto out;
 
-	skb = dev_alloc_skb(sizeof(*tt_request) + ETH_HLEN + NET_IP_ALIGN);
+	skb = netdev_alloc_skb_ip_align(NULL, sizeof(*tt_request) + ETH_HLEN);
 	if (!skb)
 		goto out;
 
-	skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(skb, ETH_HLEN);
 
 	tt_req_len = sizeof(*tt_request);
 	tt_request = (struct batadv_tt_query_packet *)skb_put(skb, tt_req_len);
@@ -1769,11 +1769,11 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
 		tt_tot = tt_len / sizeof(struct batadv_tt_change);
 
 		len = sizeof(*tt_response) + tt_len;
-		skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+		skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
 		if (!skb)
 			goto unlock;
 
-		skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+		skb_reserve(skb, ETH_HLEN);
 		packet_pos = skb_put(skb, len);
 		tt_response = (struct batadv_tt_query_packet *)packet_pos;
 		tt_response->ttvn = req_ttvn;
@@ -1885,11 +1885,11 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 		tt_tot = tt_len / sizeof(struct batadv_tt_change);
 
 		len = sizeof(*tt_response) + tt_len;
-		skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+		skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
 		if (!skb)
 			goto unlock;
 
-		skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+		skb_reserve(skb, ETH_HLEN);
 		packet_pos = skb_put(skb, len);
 		tt_response = (struct batadv_tt_query_packet *)packet_pos;
 		tt_response->ttvn = req_ttvn;
@@ -2219,11 +2219,11 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
 	if (!batadv_tt_check_roam_count(bat_priv, client))
 		goto out;
 
-	skb = dev_alloc_skb(sizeof(*roam_adv_packet) + ETH_HLEN + NET_IP_ALIGN);
+	skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
 	if (!skb)
 		goto out;
 
-	skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(skb, ETH_HLEN);
 
 	roam_adv_packet = (struct batadv_roam_adv_packet *)skb_put(skb, len);
 
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index 1625e57..94eaeb5 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -392,12 +392,12 @@ batadv_add_packet(struct batadv_priv *bat_priv,
 		return NULL;
 
 	len = sizeof(*packet) + vis_info_len;
-	info->skb_packet = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+	info->skb_packet = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
 	if (!info->skb_packet) {
 		kfree(info);
 		return NULL;
 	}
-	skb_reserve(info->skb_packet, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(info->skb_packet, ETH_HLEN);
 	packet = (struct batadv_vis_packet *)skb_put(info->skb_packet, len);
 
 	kref_init(&info->refcount);
@@ -854,13 +854,13 @@ int batadv_vis_init(struct batadv_priv *bat_priv)
 	if (!bat_priv->vis.my_info)
 		goto err;
 
-	len = sizeof(*packet) + BATADV_MAX_VIS_PACKET_SIZE;
-	len += ETH_HLEN + NET_IP_ALIGN;
-	bat_priv->vis.my_info->skb_packet = dev_alloc_skb(len);
+	len = sizeof(*packet) + BATADV_MAX_VIS_PACKET_SIZE + ETH_HLEN;
+	bat_priv->vis.my_info->skb_packet = netdev_alloc_skb_ip_align(NULL,
+								      len);
 	if (!bat_priv->vis.my_info->skb_packet)
 		goto free_info;
 
-	skb_reserve(bat_priv->vis.my_info->skb_packet, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(bat_priv->vis.my_info->skb_packet, ETH_HLEN);
 	tmp_skb = bat_priv->vis.my_info->skb_packet;
 	packet = (struct batadv_vis_packet *)skb_put(tmp_skb, sizeof(*packet));
 
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 14/21] batman-adv: don't deal with NET_IP_ALIGN manually

[Antonio Quartulli]

Instead of dealing with NET_IP_ALIGN during allocation and
headroom reservation, it is possible to use
netdev_alloc_skb_ip_align() which transparently allocate
and reserve the correct amount of data

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c        |  6 +++---
 net/batman-adv/icmp_socket.c       |  4 ++--
 net/batman-adv/translation-table.c | 20 ++++++++++----------
 net/batman-adv/vis.c               | 12 ++++++------
 4 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 42b7a94..5b0a043 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -453,16 +453,16 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff,
 	else
 		skb_size = packet_len;
 
-	skb_size += ETH_HLEN + NET_IP_ALIGN;
+	skb_size += ETH_HLEN;
 
-	forw_packet_aggr->skb = dev_alloc_skb(skb_size);
+	forw_packet_aggr->skb = netdev_alloc_skb_ip_align(NULL, skb_size);
 	if (!forw_packet_aggr->skb) {
 		if (!own_packet)
 			atomic_inc(&bat_priv->batman_queue_left);
 		kfree(forw_packet_aggr);
 		goto out;
 	}
-	skb_reserve(forw_packet_aggr->skb, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(forw_packet_aggr->skb, ETH_HLEN);
 
 	INIT_HLIST_NODE(&forw_packet_aggr->list);
 
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index 0ba6c89..b27508b 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -177,13 +177,13 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
 	if (len >= sizeof(struct batadv_icmp_packet_rr))
 		packet_len = sizeof(struct batadv_icmp_packet_rr);
 
-	skb = dev_alloc_skb(packet_len + ETH_HLEN + NET_IP_ALIGN);
+	skb = netdev_alloc_skb_ip_align(NULL, packet_len + ETH_HLEN);
 	if (!skb) {
 		len = -ENOMEM;
 		goto out;
 	}
 
-	skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(skb, ETH_HLEN);
 	icmp_packet = (struct batadv_icmp_packet_rr *)skb_put(skb, packet_len);
 
 	if (copy_from_user(icmp_packet, buff, packet_len)) {
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index d35b739..52808c4 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1607,11 +1607,11 @@ batadv_tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
 	tt_tot = tt_len / sizeof(struct batadv_tt_change);
 
 	len = tt_query_size + tt_len;
-	skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+	skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
 	if (!skb)
 		goto out;
 
-	skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(skb, ETH_HLEN);
 	tt_response = (struct batadv_tt_query_packet *)skb_put(skb, len);
 	tt_response->ttvn = ttvn;
 
@@ -1672,11 +1672,11 @@ static int batadv_send_tt_request(struct batadv_priv *bat_priv,
 	if (!tt_req_node)
 		goto out;
 
-	skb = dev_alloc_skb(sizeof(*tt_request) + ETH_HLEN + NET_IP_ALIGN);
+	skb = netdev_alloc_skb_ip_align(NULL, sizeof(*tt_request) + ETH_HLEN);
 	if (!skb)
 		goto out;
 
-	skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(skb, ETH_HLEN);
 
 	tt_req_len = sizeof(*tt_request);
 	tt_request = (struct batadv_tt_query_packet *)skb_put(skb, tt_req_len);
@@ -1769,11 +1769,11 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
 		tt_tot = tt_len / sizeof(struct batadv_tt_change);
 
 		len = sizeof(*tt_response) + tt_len;
-		skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+		skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
 		if (!skb)
 			goto unlock;
 
-		skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+		skb_reserve(skb, ETH_HLEN);
 		packet_pos = skb_put(skb, len);
 		tt_response = (struct batadv_tt_query_packet *)packet_pos;
 		tt_response->ttvn = req_ttvn;
@@ -1885,11 +1885,11 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 		tt_tot = tt_len / sizeof(struct batadv_tt_change);
 
 		len = sizeof(*tt_response) + tt_len;
-		skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+		skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
 		if (!skb)
 			goto unlock;
 
-		skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+		skb_reserve(skb, ETH_HLEN);
 		packet_pos = skb_put(skb, len);
 		tt_response = (struct batadv_tt_query_packet *)packet_pos;
 		tt_response->ttvn = req_ttvn;
@@ -2219,11 +2219,11 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
 	if (!batadv_tt_check_roam_count(bat_priv, client))
 		goto out;
 
-	skb = dev_alloc_skb(sizeof(*roam_adv_packet) + ETH_HLEN + NET_IP_ALIGN);
+	skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
 	if (!skb)
 		goto out;
 
-	skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(skb, ETH_HLEN);
 
 	roam_adv_packet = (struct batadv_roam_adv_packet *)skb_put(skb, len);
 
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index 1625e57..94eaeb5 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -392,12 +392,12 @@ batadv_add_packet(struct batadv_priv *bat_priv,
 		return NULL;
 
 	len = sizeof(*packet) + vis_info_len;
-	info->skb_packet = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+	info->skb_packet = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
 	if (!info->skb_packet) {
 		kfree(info);
 		return NULL;
 	}
-	skb_reserve(info->skb_packet, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(info->skb_packet, ETH_HLEN);
 	packet = (struct batadv_vis_packet *)skb_put(info->skb_packet, len);
 
 	kref_init(&info->refcount);
@@ -854,13 +854,13 @@ int batadv_vis_init(struct batadv_priv *bat_priv)
 	if (!bat_priv->vis.my_info)
 		goto err;
 
-	len = sizeof(*packet) + BATADV_MAX_VIS_PACKET_SIZE;
-	len += ETH_HLEN + NET_IP_ALIGN;
-	bat_priv->vis.my_info->skb_packet = dev_alloc_skb(len);
+	len = sizeof(*packet) + BATADV_MAX_VIS_PACKET_SIZE + ETH_HLEN;
+	bat_priv->vis.my_info->skb_packet = netdev_alloc_skb_ip_align(NULL,
+								      len);
 	if (!bat_priv->vis.my_info->skb_packet)
 		goto free_info;
 
-	skb_reserve(bat_priv->vis.my_info->skb_packet, ETH_HLEN + NET_IP_ALIGN);
+	skb_reserve(bat_priv->vis.my_info->skb_packet, ETH_HLEN);
 	tmp_skb = bat_priv->vis.my_info->skb_packet;
 	packet = (struct batadv_vis_packet *)skb_put(tmp_skb, sizeof(*packet));
 
-- 
1.8.1.5

[PATCH 15/21] batman-adv: pass a 16bit long flag argument to tt_global_add()

[Antonio Quartulli]

it may be the case that we want to store some local TT client flags in a global
entry, therefore the tt_global_add needs to get a proper argument for this

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/translation-table.c | 19 +++++++++++++++++--
 net/batman-adv/translation-table.h |  2 +-
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 52808c4..e272f68 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -798,10 +798,25 @@ out:
 		batadv_tt_orig_list_entry_free_ref(orig_entry);
 }
 
-/* caller must hold orig_node refcount */
+/**
+ * batadv_tt_global_add - add a new TT global entry or update an existing one
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: the originator announcing the client
+ * @tt_addr: the mac address of the non-mesh client
+ * @flags: TT flags that have to be set for this non-mesh client
+ * @ttvn: the tt version number ever announcing this non-mesh client
+ *
+ * Add a new TT global entry for the given originator. If the entry already
+ * exists add a new reference to the given originator (a global entry can have
+ * references to multiple originators) and adjust the flags attribute to reflect
+ * the function argument.
+ * If a TT local entry exists for this non-mesh client remove it.
+ *
+ * The caller must hold orig_node refcount.
+ */
 int batadv_tt_global_add(struct batadv_priv *bat_priv,
 			 struct batadv_orig_node *orig_node,
-			 const unsigned char *tt_addr, uint8_t flags,
+			 const unsigned char *tt_addr, uint16_t flags,
 			 uint8_t ttvn)
 {
 	struct batadv_tt_global_entry *tt_global_entry;
diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h
index ab8e683..659a3bb 100644
--- a/net/batman-adv/translation-table.h
+++ b/net/batman-adv/translation-table.h
@@ -33,7 +33,7 @@ void batadv_tt_global_add_orig(struct batadv_priv *bat_priv,
 			       const unsigned char *tt_buff, int tt_buff_len);
 int batadv_tt_global_add(struct batadv_priv *bat_priv,
 			 struct batadv_orig_node *orig_node,
-			 const unsigned char *addr, uint8_t flags,
+			 const unsigned char *addr, uint16_t flags,
 			 uint8_t ttvn);
 int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset);
 void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 15/21] batman-adv: pass a 16bit long flag argument to tt_global_add()

[Antonio Quartulli]

it may be the case that we want to store some local TT client flags in a global
entry, therefore the tt_global_add needs to get a proper argument for this

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/translation-table.c | 19 +++++++++++++++++--
 net/batman-adv/translation-table.h |  2 +-
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 52808c4..e272f68 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -798,10 +798,25 @@ out:
 		batadv_tt_orig_list_entry_free_ref(orig_entry);
 }
 
-/* caller must hold orig_node refcount */
+/**
+ * batadv_tt_global_add - add a new TT global entry or update an existing one
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: the originator announcing the client
+ * @tt_addr: the mac address of the non-mesh client
+ * @flags: TT flags that have to be set for this non-mesh client
+ * @ttvn: the tt version number ever announcing this non-mesh client
+ *
+ * Add a new TT global entry for the given originator. If the entry already
+ * exists add a new reference to the given originator (a global entry can have
+ * references to multiple originators) and adjust the flags attribute to reflect
+ * the function argument.
+ * If a TT local entry exists for this non-mesh client remove it.
+ *
+ * The caller must hold orig_node refcount.
+ */
 int batadv_tt_global_add(struct batadv_priv *bat_priv,
 			 struct batadv_orig_node *orig_node,
-			 const unsigned char *tt_addr, uint8_t flags,
+			 const unsigned char *tt_addr, uint16_t flags,
 			 uint8_t ttvn)
 {
 	struct batadv_tt_global_entry *tt_global_entry;
diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h
index ab8e683..659a3bb 100644
--- a/net/batman-adv/translation-table.h
+++ b/net/batman-adv/translation-table.h
@@ -33,7 +33,7 @@ void batadv_tt_global_add_orig(struct batadv_priv *bat_priv,
 			       const unsigned char *tt_buff, int tt_buff_len);
 int batadv_tt_global_add(struct batadv_priv *bat_priv,
 			 struct batadv_orig_node *orig_node,
-			 const unsigned char *addr, uint8_t flags,
+			 const unsigned char *addr, uint16_t flags,
 			 uint8_t ttvn);
 int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset);
 void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
-- 
1.8.1.5

[PATCH 16/21] batman-adv: Remove unnecessary INIT_HLIST_NODE() calls

[Antonio Quartulli]

From: Linus Lüssing <linus.luessing@web.de>

There's no need to for an explicit hlist_node initialization if it is
added to a list right away, like it's the case with the
hlist_add_head()s here.

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/bat_iv_ogm.c | 2 --
 net/batman-adv/send.c       | 2 --
 2 files changed, 4 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 5b0a043..d07323b 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -464,8 +464,6 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff,
 	}
 	skb_reserve(forw_packet_aggr->skb, ETH_HLEN);
 
-	INIT_HLIST_NODE(&forw_packet_aggr->list);
-
 	skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
 	forw_packet_aggr->packet_len = packet_len;
 	memcpy(skb_buff, packet_buff, packet_len);
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index ed7072a..ce69f45 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -152,8 +152,6 @@ _batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
 				 struct batadv_forw_packet *forw_packet,
 				 unsigned long send_time)
 {
-	INIT_HLIST_NODE(&forw_packet->list);
-
 	/* add new packet to packet list */
 	spin_lock_bh(&bat_priv->forw_bcast_list_lock);
 	hlist_add_head(&forw_packet->list, &bat_priv->forw_bcast_list);
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 16/21] batman-adv: Remove unnecessary INIT_HLIST_NODE() calls

[Antonio Quartulli]

From: Linus Lüssing <linus.luessing@web.de>

There's no need to for an explicit hlist_node initialization if it is
added to a list right away, like it's the case with the
hlist_add_head()s here.

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/bat_iv_ogm.c | 2 --
 net/batman-adv/send.c       | 2 --
 2 files changed, 4 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 5b0a043..d07323b 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -464,8 +464,6 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff,
 	}
 	skb_reserve(forw_packet_aggr->skb, ETH_HLEN);
 
-	INIT_HLIST_NODE(&forw_packet_aggr->list);
-
 	skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
 	forw_packet_aggr->packet_len = packet_len;
 	memcpy(skb_buff, packet_buff, packet_len);
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index ed7072a..ce69f45 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -152,8 +152,6 @@ _batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
 				 struct batadv_forw_packet *forw_packet,
 				 unsigned long send_time)
 {
-	INIT_HLIST_NODE(&forw_packet->list);
-
 	/* add new packet to packet list */
 	spin_lock_bh(&bat_priv->forw_bcast_list_lock);
 	hlist_add_head(&forw_packet->list, &bat_priv->forw_bcast_list);
-- 
1.8.1.5

[PATCH 17/21] batman-adv: do not print orig nodes without nc neighbors on nc table print

[Antonio Quartulli]

From: Marek Lindner <lindner_marek@yahoo.de>

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/network-coding.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 0787a34..22cd51f 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1763,6 +1763,13 @@ int batadv_nc_nodes_seq_print_text(struct seq_file *seq, void *offset)
 		/* For each orig_node in this bin */
 		rcu_read_lock();
 		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
+			/* no need to print the orig node if it does not have
+			 * network coding neighbors
+			 */
+			if (list_empty(&orig_node->in_coding_list) &&
+			    list_empty(&orig_node->out_coding_list))
+				continue;
+
 			seq_printf(seq, "Node:      %pM\n", orig_node->orig);
 
 			seq_puts(seq, " Ingoing:  ");
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 17/21] batman-adv: do not print orig nodes without nc neighbors on nc table print

[Antonio Quartulli]

From: Marek Lindner <lindner_marek@yahoo.de>

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/network-coding.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 0787a34..22cd51f 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1763,6 +1763,13 @@ int batadv_nc_nodes_seq_print_text(struct seq_file *seq, void *offset)
 		/* For each orig_node in this bin */
 		rcu_read_lock();
 		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
+			/* no need to print the orig node if it does not have
+			 * network coding neighbors
+			 */
+			if (list_empty(&orig_node->in_coding_list) &&
+			    list_empty(&orig_node->out_coding_list))
+				continue;
+
 			seq_printf(seq, "Node:      %pM\n", orig_node->orig);
 
 			seq_puts(seq, " Ingoing:  ");
-- 
1.8.1.5

[PATCH 18/21] batman-adv: change VID semantic in the BLA code

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

In order to make batman-adv fully vlan aware later, the
semantic used for variables storing the VLAN ID values has
to be changed in order to be adapted to the new one which
will be used batman-adv wide.

In particular, the VID has to be an "_unsigned_ short int"
and its 4 MSB will be used as a flag bitfield, while the
remaining 12 bits are used to store the real VID value

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
---
 net/batman-adv/bridge_loop_avoidance.c | 51 ++++++++++++++++++----------------
 net/batman-adv/bridge_loop_avoidance.h | 12 ++++----
 net/batman-adv/main.h                  | 11 ++++++++
 net/batman-adv/soft-interface.c        |  4 +--
 net/batman-adv/types.h                 |  4 +--
 5 files changed, 49 insertions(+), 33 deletions(-)

diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 082189e..7354063 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -180,7 +180,7 @@ static struct batadv_bla_claim
  */
 static struct batadv_bla_backbone_gw *
 batadv_backbone_hash_find(struct batadv_priv *bat_priv,
-			  uint8_t *addr, short vid)
+			  uint8_t *addr, unsigned short vid)
 {
 	struct batadv_hashtable *hash = bat_priv->bla.backbone_hash;
 	struct hlist_head *head;
@@ -257,7 +257,7 @@ batadv_bla_del_backbone_claims(struct batadv_bla_backbone_gw *backbone_gw)
  * @claimtype: the type of the claim (CLAIM, UNCLAIM, ANNOUNCE, ...)
  */
 static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
-				  short vid, int claimtype)
+				  unsigned short vid, int claimtype)
 {
 	struct sk_buff *skb;
 	struct ethhdr *ethhdr;
@@ -335,13 +335,14 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		memcpy(hw_src, mac, ETH_ALEN);
 		memcpy(ethhdr->h_dest, mac, ETH_ALEN);
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
-			   "bla_send_claim(): REQUEST of %pM to %pMon vid %d\n",
+			   "bla_send_claim(): REQUEST of %pM to %pM on vid %d\n",
 			   ethhdr->h_source, ethhdr->h_dest, vid);
 		break;
 	}
 
-	if (vid != -1)
-		skb = vlan_insert_tag(skb, htons(ETH_P_8021Q), vid);
+	if (vid & BATADV_VLAN_HAS_TAG)
+		skb = vlan_insert_tag(skb, htons(ETH_P_8021Q),
+				      vid & VLAN_VID_MASK);
 
 	skb_reset_mac_header(skb);
 	skb->protocol = eth_type_trans(skb, soft_iface);
@@ -367,7 +368,7 @@ out:
  */
 static struct batadv_bla_backbone_gw *
 batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
-			   short vid, bool own_backbone)
+			   unsigned short vid, bool own_backbone)
 {
 	struct batadv_bla_backbone_gw *entry;
 	struct batadv_orig_node *orig_node;
@@ -434,7 +435,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
 static void
 batadv_bla_update_own_backbone_gw(struct batadv_priv *bat_priv,
 				  struct batadv_hard_iface *primary_if,
-				  short vid)
+				  unsigned short vid)
 {
 	struct batadv_bla_backbone_gw *backbone_gw;
 
@@ -456,7 +457,7 @@ batadv_bla_update_own_backbone_gw(struct batadv_priv *bat_priv,
  */
 static void batadv_bla_answer_request(struct batadv_priv *bat_priv,
 				      struct batadv_hard_iface *primary_if,
-				      short vid)
+				      unsigned short vid)
 {
 	struct hlist_head *head;
 	struct batadv_hashtable *hash;
@@ -547,7 +548,7 @@ static void batadv_bla_send_announce(struct batadv_priv *bat_priv,
  * @backbone_gw: the backbone gateway which claims it
  */
 static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
-				 const uint8_t *mac, const short vid,
+				 const uint8_t *mac, const unsigned short vid,
 				 struct batadv_bla_backbone_gw *backbone_gw)
 {
 	struct batadv_bla_claim *claim;
@@ -611,7 +612,7 @@ claim_free_ref:
  * given mac address and vid.
  */
 static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
-				 const uint8_t *mac, const short vid)
+				 const uint8_t *mac, const unsigned short vid)
 {
 	struct batadv_bla_claim search_claim, *claim;
 
@@ -637,7 +638,7 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
 /* check for ANNOUNCE frame, return 1 if handled */
 static int batadv_handle_announce(struct batadv_priv *bat_priv,
 				  uint8_t *an_addr, uint8_t *backbone_addr,
-				  short vid)
+				  unsigned short vid)
 {
 	struct batadv_bla_backbone_gw *backbone_gw;
 	uint16_t crc;
@@ -685,7 +686,7 @@ static int batadv_handle_announce(struct batadv_priv *bat_priv,
 static int batadv_handle_request(struct batadv_priv *bat_priv,
 				 struct batadv_hard_iface *primary_if,
 				 uint8_t *backbone_addr,
-				 struct ethhdr *ethhdr, short vid)
+				 struct ethhdr *ethhdr, unsigned short vid)
 {
 	/* check for REQUEST frame */
 	if (!batadv_compare_eth(backbone_addr, ethhdr->h_dest))
@@ -709,7 +710,7 @@ static int batadv_handle_request(struct batadv_priv *bat_priv,
 static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
 				 struct batadv_hard_iface *primary_if,
 				 uint8_t *backbone_addr,
-				 uint8_t *claim_addr, short vid)
+				 uint8_t *claim_addr, unsigned short vid)
 {
 	struct batadv_bla_backbone_gw *backbone_gw;
 
@@ -738,7 +739,7 @@ static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
 static int batadv_handle_claim(struct batadv_priv *bat_priv,
 			       struct batadv_hard_iface *primary_if,
 			       uint8_t *backbone_addr, uint8_t *claim_addr,
-			       short vid)
+			       unsigned short vid)
 {
 	struct batadv_bla_backbone_gw *backbone_gw;
 
@@ -861,7 +862,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 	struct batadv_bla_claim_dst *bla_dst;
 	uint16_t proto;
 	int headlen;
-	short vid = -1;
+	unsigned short vid = BATADV_NO_FLAGS;
 	int ret;
 
 	ethhdr = eth_hdr(skb);
@@ -869,6 +870,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 	if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
 		vhdr = (struct vlan_ethhdr *)ethhdr;
 		vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
+		vid |= BATADV_VLAN_HAS_TAG;
 		proto = ntohs(vhdr->h_vlan_encapsulated_proto);
 		headlen = sizeof(*vhdr);
 	} else {
@@ -1358,7 +1360,7 @@ int batadv_bla_is_backbone_gw(struct sk_buff *skb,
 	struct ethhdr *ethhdr;
 	struct vlan_ethhdr *vhdr;
 	struct batadv_bla_backbone_gw *backbone_gw;
-	short vid = -1;
+	unsigned short vid = BATADV_NO_FLAGS;
 
 	if (!atomic_read(&orig_node->bat_priv->bridge_loop_avoidance))
 		return 0;
@@ -1375,6 +1377,7 @@ int batadv_bla_is_backbone_gw(struct sk_buff *skb,
 
 		vhdr = (struct vlan_ethhdr *)(skb->data + hdr_size);
 		vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
+		vid |= BATADV_VLAN_HAS_TAG;
 	}
 
 	/* see if this originator is a backbone gw for this VLAN */
@@ -1424,8 +1427,8 @@ void batadv_bla_free(struct batadv_priv *bat_priv)
  * returns 1, otherwise it returns 0 and the caller shall further
  * process the skb.
  */
-int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
-		  bool is_bcast)
+int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		  unsigned short vid, bool is_bcast)
 {
 	struct ethhdr *ethhdr;
 	struct batadv_bla_claim search_claim, *claim = NULL;
@@ -1519,7 +1522,8 @@ out:
  * returns 1, otherwise it returns 0 and the caller shall further
  * process the skb.
  */
-int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
+int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		  unsigned short vid)
 {
 	struct ethhdr *ethhdr;
 	struct batadv_bla_claim search_claim, *claim = NULL;
@@ -1623,7 +1627,7 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
 		hlist_for_each_entry_rcu(claim, head, hash_entry) {
 			is_own = batadv_compare_eth(claim->backbone_gw->orig,
 						    primary_addr);
-			seq_printf(seq,	" * %pM on % 5d by %pM [%c] (%#.4x)\n",
+			seq_printf(seq, " * %pM on %5d by %pM [%c] (%#.4x)\n",
 				   claim->addr, claim->vid,
 				   claim->backbone_gw->orig,
 				   (is_own ? 'x' : ' '),
@@ -1676,10 +1680,9 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
 			if (is_own)
 				continue;
 
-			seq_printf(seq,
-				   " * %pM on % 5d % 4i.%03is (%#.4x)\n",
-				   backbone_gw->orig, backbone_gw->vid,
-				   secs, msecs, backbone_gw->crc);
+			seq_printf(seq, " * %pM on %5d %4i.%03is (%#.4x)\n",
+				   backbone_gw->orig, backbone_gw->vid, secs,
+				   msecs, backbone_gw->crc);
 		}
 		rcu_read_unlock();
 	}
diff --git a/net/batman-adv/bridge_loop_avoidance.h b/net/batman-adv/bridge_loop_avoidance.h
index dea2fbc..4b102e7 100644
--- a/net/batman-adv/bridge_loop_avoidance.h
+++ b/net/batman-adv/bridge_loop_avoidance.h
@@ -21,9 +21,10 @@
 #define _NET_BATMAN_ADV_BLA_H_
 
 #ifdef CONFIG_BATMAN_ADV_BLA
-int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
-		  bool is_bcast);
-int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid);
+int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		  unsigned short vid, bool is_bcast);
+int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		  unsigned short vid);
 int batadv_bla_is_backbone_gw(struct sk_buff *skb,
 			      struct batadv_orig_node *orig_node, int hdr_size);
 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
@@ -42,13 +43,14 @@ void batadv_bla_free(struct batadv_priv *bat_priv);
 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
 
 static inline int batadv_bla_rx(struct batadv_priv *bat_priv,
-				struct sk_buff *skb, short vid, bool is_bcast)
+				struct sk_buff *skb, unsigned short vid,
+				bool is_bcast)
 {
 	return 0;
 }
 
 static inline int batadv_bla_tx(struct batadv_priv *bat_priv,
-				struct sk_buff *skb, short vid)
+				struct sk_buff *skb, unsigned short vid)
 {
 	return 0;
 }
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index ea1a3ba..6f25ef2 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -162,6 +162,17 @@ enum batadv_uev_type {
 #include <linux/seq_file.h>
 #include "types.h"
 
+/**
+ * batadv_vlan_flags - flags for the four MSB of any vlan ID field
+ * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not
+ */
+enum batadv_vlan_flags {
+	BATADV_VLAN_HAS_TAG	= BIT(15),
+};
+
+#define BATADV_PRINT_VID(vid) (vid & BATADV_VLAN_HAS_TAG ? \
+			       (int)(vid & VLAN_VID_MASK) : -1)
+
 extern char batadv_routing_algo[];
 extern struct list_head batadv_hardif_list;
 
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index b26a6cd..700d0b4 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -154,7 +154,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
 						    0x00, 0x00};
 	unsigned int header_len = 0;
 	int data_len = skb->len, ret;
-	short vid __maybe_unused = -1;
+	unsigned short vid __maybe_unused = BATADV_NO_FLAGS;
 	bool do_bcast = false;
 	uint32_t seqno;
 	unsigned long brd_delay = 1;
@@ -303,7 +303,7 @@ void batadv_interface_rx(struct net_device *soft_iface,
 	struct ethhdr *ethhdr;
 	struct vlan_ethhdr *vhdr;
 	struct batadv_header *batadv_header = (struct batadv_header *)skb->data;
-	short vid __maybe_unused = -1;
+	unsigned short vid __maybe_unused = BATADV_NO_FLAGS;
 	__be16 ethertype = __constant_htons(ETH_P_BATMAN);
 	bool is_bcast;
 
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 5f542bd..b2c94e1 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -642,7 +642,7 @@ struct batadv_socket_packet {
 #ifdef CONFIG_BATMAN_ADV_BLA
 struct batadv_bla_backbone_gw {
 	uint8_t orig[ETH_ALEN];
-	short vid;
+	unsigned short vid;
 	struct hlist_node hash_entry;
 	struct batadv_priv *bat_priv;
 	unsigned long lasttime;
@@ -665,7 +665,7 @@ struct batadv_bla_backbone_gw {
  */
 struct batadv_bla_claim {
 	uint8_t addr[ETH_ALEN];
-	short vid;
+	unsigned short vid;
 	struct batadv_bla_backbone_gw *backbone_gw;
 	unsigned long lasttime;
 	struct hlist_node hash_entry;
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 18/21] batman-adv: change VID semantic in the BLA code

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

In order to make batman-adv fully vlan aware later, the
semantic used for variables storing the VLAN ID values has
to be changed in order to be adapted to the new one which
will be used batman-adv wide.

In particular, the VID has to be an "_unsigned_ short int"
and its 4 MSB will be used as a flag bitfield, while the
remaining 12 bits are used to store the real VID value

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
---
 net/batman-adv/bridge_loop_avoidance.c | 51 ++++++++++++++++++----------------
 net/batman-adv/bridge_loop_avoidance.h | 12 ++++----
 net/batman-adv/main.h                  | 11 ++++++++
 net/batman-adv/soft-interface.c        |  4 +--
 net/batman-adv/types.h                 |  4 +--
 5 files changed, 49 insertions(+), 33 deletions(-)

diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 082189e..7354063 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -180,7 +180,7 @@ static struct batadv_bla_claim
  */
 static struct batadv_bla_backbone_gw *
 batadv_backbone_hash_find(struct batadv_priv *bat_priv,
-			  uint8_t *addr, short vid)
+			  uint8_t *addr, unsigned short vid)
 {
 	struct batadv_hashtable *hash = bat_priv->bla.backbone_hash;
 	struct hlist_head *head;
@@ -257,7 +257,7 @@ batadv_bla_del_backbone_claims(struct batadv_bla_backbone_gw *backbone_gw)
  * @claimtype: the type of the claim (CLAIM, UNCLAIM, ANNOUNCE, ...)
  */
 static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
-				  short vid, int claimtype)
+				  unsigned short vid, int claimtype)
 {
 	struct sk_buff *skb;
 	struct ethhdr *ethhdr;
@@ -335,13 +335,14 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		memcpy(hw_src, mac, ETH_ALEN);
 		memcpy(ethhdr->h_dest, mac, ETH_ALEN);
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
-			   "bla_send_claim(): REQUEST of %pM to %pMon vid %d\n",
+			   "bla_send_claim(): REQUEST of %pM to %pM on vid %d\n",
 			   ethhdr->h_source, ethhdr->h_dest, vid);
 		break;
 	}
 
-	if (vid != -1)
-		skb = vlan_insert_tag(skb, htons(ETH_P_8021Q), vid);
+	if (vid & BATADV_VLAN_HAS_TAG)
+		skb = vlan_insert_tag(skb, htons(ETH_P_8021Q),
+				      vid & VLAN_VID_MASK);
 
 	skb_reset_mac_header(skb);
 	skb->protocol = eth_type_trans(skb, soft_iface);
@@ -367,7 +368,7 @@ out:
  */
 static struct batadv_bla_backbone_gw *
 batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
-			   short vid, bool own_backbone)
+			   unsigned short vid, bool own_backbone)
 {
 	struct batadv_bla_backbone_gw *entry;
 	struct batadv_orig_node *orig_node;
@@ -434,7 +435,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
 static void
 batadv_bla_update_own_backbone_gw(struct batadv_priv *bat_priv,
 				  struct batadv_hard_iface *primary_if,
-				  short vid)
+				  unsigned short vid)
 {
 	struct batadv_bla_backbone_gw *backbone_gw;
 
@@ -456,7 +457,7 @@ batadv_bla_update_own_backbone_gw(struct batadv_priv *bat_priv,
  */
 static void batadv_bla_answer_request(struct batadv_priv *bat_priv,
 				      struct batadv_hard_iface *primary_if,
-				      short vid)
+				      unsigned short vid)
 {
 	struct hlist_head *head;
 	struct batadv_hashtable *hash;
@@ -547,7 +548,7 @@ static void batadv_bla_send_announce(struct batadv_priv *bat_priv,
  * @backbone_gw: the backbone gateway which claims it
  */
 static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
-				 const uint8_t *mac, const short vid,
+				 const uint8_t *mac, const unsigned short vid,
 				 struct batadv_bla_backbone_gw *backbone_gw)
 {
 	struct batadv_bla_claim *claim;
@@ -611,7 +612,7 @@ claim_free_ref:
  * given mac address and vid.
  */
 static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
-				 const uint8_t *mac, const short vid)
+				 const uint8_t *mac, const unsigned short vid)
 {
 	struct batadv_bla_claim search_claim, *claim;
 
@@ -637,7 +638,7 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
 /* check for ANNOUNCE frame, return 1 if handled */
 static int batadv_handle_announce(struct batadv_priv *bat_priv,
 				  uint8_t *an_addr, uint8_t *backbone_addr,
-				  short vid)
+				  unsigned short vid)
 {
 	struct batadv_bla_backbone_gw *backbone_gw;
 	uint16_t crc;
@@ -685,7 +686,7 @@ static int batadv_handle_announce(struct batadv_priv *bat_priv,
 static int batadv_handle_request(struct batadv_priv *bat_priv,
 				 struct batadv_hard_iface *primary_if,
 				 uint8_t *backbone_addr,
-				 struct ethhdr *ethhdr, short vid)
+				 struct ethhdr *ethhdr, unsigned short vid)
 {
 	/* check for REQUEST frame */
 	if (!batadv_compare_eth(backbone_addr, ethhdr->h_dest))
@@ -709,7 +710,7 @@ static int batadv_handle_request(struct batadv_priv *bat_priv,
 static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
 				 struct batadv_hard_iface *primary_if,
 				 uint8_t *backbone_addr,
-				 uint8_t *claim_addr, short vid)
+				 uint8_t *claim_addr, unsigned short vid)
 {
 	struct batadv_bla_backbone_gw *backbone_gw;
 
@@ -738,7 +739,7 @@ static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
 static int batadv_handle_claim(struct batadv_priv *bat_priv,
 			       struct batadv_hard_iface *primary_if,
 			       uint8_t *backbone_addr, uint8_t *claim_addr,
-			       short vid)
+			       unsigned short vid)
 {
 	struct batadv_bla_backbone_gw *backbone_gw;
 
@@ -861,7 +862,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 	struct batadv_bla_claim_dst *bla_dst;
 	uint16_t proto;
 	int headlen;
-	short vid = -1;
+	unsigned short vid = BATADV_NO_FLAGS;
 	int ret;
 
 	ethhdr = eth_hdr(skb);
@@ -869,6 +870,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 	if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
 		vhdr = (struct vlan_ethhdr *)ethhdr;
 		vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
+		vid |= BATADV_VLAN_HAS_TAG;
 		proto = ntohs(vhdr->h_vlan_encapsulated_proto);
 		headlen = sizeof(*vhdr);
 	} else {
@@ -1358,7 +1360,7 @@ int batadv_bla_is_backbone_gw(struct sk_buff *skb,
 	struct ethhdr *ethhdr;
 	struct vlan_ethhdr *vhdr;
 	struct batadv_bla_backbone_gw *backbone_gw;
-	short vid = -1;
+	unsigned short vid = BATADV_NO_FLAGS;
 
 	if (!atomic_read(&orig_node->bat_priv->bridge_loop_avoidance))
 		return 0;
@@ -1375,6 +1377,7 @@ int batadv_bla_is_backbone_gw(struct sk_buff *skb,
 
 		vhdr = (struct vlan_ethhdr *)(skb->data + hdr_size);
 		vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
+		vid |= BATADV_VLAN_HAS_TAG;
 	}
 
 	/* see if this originator is a backbone gw for this VLAN */
@@ -1424,8 +1427,8 @@ void batadv_bla_free(struct batadv_priv *bat_priv)
  * returns 1, otherwise it returns 0 and the caller shall further
  * process the skb.
  */
-int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
-		  bool is_bcast)
+int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		  unsigned short vid, bool is_bcast)
 {
 	struct ethhdr *ethhdr;
 	struct batadv_bla_claim search_claim, *claim = NULL;
@@ -1519,7 +1522,8 @@ out:
  * returns 1, otherwise it returns 0 and the caller shall further
  * process the skb.
  */
-int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
+int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		  unsigned short vid)
 {
 	struct ethhdr *ethhdr;
 	struct batadv_bla_claim search_claim, *claim = NULL;
@@ -1623,7 +1627,7 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
 		hlist_for_each_entry_rcu(claim, head, hash_entry) {
 			is_own = batadv_compare_eth(claim->backbone_gw->orig,
 						    primary_addr);
-			seq_printf(seq,	" * %pM on % 5d by %pM [%c] (%#.4x)\n",
+			seq_printf(seq, " * %pM on %5d by %pM [%c] (%#.4x)\n",
 				   claim->addr, claim->vid,
 				   claim->backbone_gw->orig,
 				   (is_own ? 'x' : ' '),
@@ -1676,10 +1680,9 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
 			if (is_own)
 				continue;
 
-			seq_printf(seq,
-				   " * %pM on % 5d % 4i.%03is (%#.4x)\n",
-				   backbone_gw->orig, backbone_gw->vid,
-				   secs, msecs, backbone_gw->crc);
+			seq_printf(seq, " * %pM on %5d %4i.%03is (%#.4x)\n",
+				   backbone_gw->orig, backbone_gw->vid, secs,
+				   msecs, backbone_gw->crc);
 		}
 		rcu_read_unlock();
 	}
diff --git a/net/batman-adv/bridge_loop_avoidance.h b/net/batman-adv/bridge_loop_avoidance.h
index dea2fbc..4b102e7 100644
--- a/net/batman-adv/bridge_loop_avoidance.h
+++ b/net/batman-adv/bridge_loop_avoidance.h
@@ -21,9 +21,10 @@
 #define _NET_BATMAN_ADV_BLA_H_
 
 #ifdef CONFIG_BATMAN_ADV_BLA
-int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
-		  bool is_bcast);
-int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid);
+int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		  unsigned short vid, bool is_bcast);
+int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+		  unsigned short vid);
 int batadv_bla_is_backbone_gw(struct sk_buff *skb,
 			      struct batadv_orig_node *orig_node, int hdr_size);
 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
@@ -42,13 +43,14 @@ void batadv_bla_free(struct batadv_priv *bat_priv);
 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
 
 static inline int batadv_bla_rx(struct batadv_priv *bat_priv,
-				struct sk_buff *skb, short vid, bool is_bcast)
+				struct sk_buff *skb, unsigned short vid,
+				bool is_bcast)
 {
 	return 0;
 }
 
 static inline int batadv_bla_tx(struct batadv_priv *bat_priv,
-				struct sk_buff *skb, short vid)
+				struct sk_buff *skb, unsigned short vid)
 {
 	return 0;
 }
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index ea1a3ba..6f25ef2 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -162,6 +162,17 @@ enum batadv_uev_type {
 #include <linux/seq_file.h>
 #include "types.h"
 
+/**
+ * batadv_vlan_flags - flags for the four MSB of any vlan ID field
+ * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not
+ */
+enum batadv_vlan_flags {
+	BATADV_VLAN_HAS_TAG	= BIT(15),
+};
+
+#define BATADV_PRINT_VID(vid) (vid & BATADV_VLAN_HAS_TAG ? \
+			       (int)(vid & VLAN_VID_MASK) : -1)
+
 extern char batadv_routing_algo[];
 extern struct list_head batadv_hardif_list;
 
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index b26a6cd..700d0b4 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -154,7 +154,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
 						    0x00, 0x00};
 	unsigned int header_len = 0;
 	int data_len = skb->len, ret;
-	short vid __maybe_unused = -1;
+	unsigned short vid __maybe_unused = BATADV_NO_FLAGS;
 	bool do_bcast = false;
 	uint32_t seqno;
 	unsigned long brd_delay = 1;
@@ -303,7 +303,7 @@ void batadv_interface_rx(struct net_device *soft_iface,
 	struct ethhdr *ethhdr;
 	struct vlan_ethhdr *vhdr;
 	struct batadv_header *batadv_header = (struct batadv_header *)skb->data;
-	short vid __maybe_unused = -1;
+	unsigned short vid __maybe_unused = BATADV_NO_FLAGS;
 	__be16 ethertype = __constant_htons(ETH_P_BATMAN);
 	bool is_bcast;
 
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 5f542bd..b2c94e1 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -642,7 +642,7 @@ struct batadv_socket_packet {
 #ifdef CONFIG_BATMAN_ADV_BLA
 struct batadv_bla_backbone_gw {
 	uint8_t orig[ETH_ALEN];
-	short vid;
+	unsigned short vid;
 	struct hlist_node hash_entry;
 	struct batadv_priv *bat_priv;
 	unsigned long lasttime;
@@ -665,7 +665,7 @@ struct batadv_bla_backbone_gw {
  */
 struct batadv_bla_claim {
 	uint8_t addr[ETH_ALEN];
-	short vid;
+	unsigned short vid;
 	struct batadv_bla_backbone_gw *backbone_gw;
 	unsigned long lasttime;
 	struct hlist_node hash_entry;
-- 
1.8.1.5

[PATCH 19/21] batman-adv: print the VID properly

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

Since the MSB bits of any vid variable are now used for
storing flags, print the vid properly by taking the flags
away and printing -1 in case of VID representing no real
VLAN.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bridge_loop_avoidance.c | 37 +++++++++++++++++++---------------
 1 file changed, 21 insertions(+), 16 deletions(-)

diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 7354063..e9d8e0b 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -307,7 +307,8 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		 */
 		memcpy(ethhdr->h_source, mac, ETH_ALEN);
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
-			   "bla_send_claim(): CLAIM %pM on vid %d\n", mac, vid);
+			   "bla_send_claim(): CLAIM %pM on vid %d\n", mac,
+			   BATADV_PRINT_VID(vid));
 		break;
 	case BATADV_CLAIM_TYPE_UNCLAIM:
 		/* unclaim frame
@@ -316,7 +317,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		memcpy(hw_src, mac, ETH_ALEN);
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_send_claim(): UNCLAIM %pM on vid %d\n", mac,
-			   vid);
+			   BATADV_PRINT_VID(vid));
 		break;
 	case BATADV_CLAIM_TYPE_ANNOUNCE:
 		/* announcement frame
@@ -325,7 +326,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		memcpy(hw_src, mac, ETH_ALEN);
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_send_claim(): ANNOUNCE of %pM on vid %d\n",
-			   ethhdr->h_source, vid);
+			   ethhdr->h_source, BATADV_PRINT_VID(vid));
 		break;
 	case BATADV_CLAIM_TYPE_REQUEST:
 		/* request frame
@@ -336,7 +337,8 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		memcpy(ethhdr->h_dest, mac, ETH_ALEN);
 		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, vid);
+			   ethhdr->h_source, ethhdr->h_dest,
+			   BATADV_PRINT_VID(vid));
 		break;
 	}
 
@@ -381,7 +383,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv,
 		   "bla_get_backbone_gw(): not found (%pM, %d), creating new entry\n",
-		   orig, vid);
+		   orig, BATADV_PRINT_VID(vid));
 
 	entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 	if (!entry)
@@ -573,7 +575,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
 		atomic_set(&claim->refcount, 2);
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_add_claim(): adding new entry %pM, vid %d to hash ...\n",
-			   mac, vid);
+			   mac, BATADV_PRINT_VID(vid));
 		hash_added = batadv_hash_add(bat_priv->bla.claim_hash,
 					     batadv_compare_claim,
 					     batadv_choose_claim, claim,
@@ -592,7 +594,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
 
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_add_claim(): changing ownership for %pM, vid %d\n",
-			   mac, vid);
+			   mac, BATADV_PRINT_VID(vid));
 
 		claim->backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
 		batadv_backbone_gw_free_ref(claim->backbone_gw);
@@ -623,7 +625,7 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
 		return;
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla_del_claim(): %pM, vid %d\n",
-		   mac, vid);
+		   mac, BATADV_PRINT_VID(vid));
 
 	batadv_hash_remove(bat_priv->bla.claim_hash, batadv_compare_claim,
 			   batadv_choose_claim, claim);
@@ -659,12 +661,13 @@ static int batadv_handle_announce(struct batadv_priv *bat_priv,
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv,
 		   "handle_announce(): ANNOUNCE vid %d (sent by %pM)... CRC = %#.4x\n",
-		   vid, backbone_gw->orig, crc);
+		   BATADV_PRINT_VID(vid), backbone_gw->orig, crc);
 
 	if (backbone_gw->crc != crc) {
 		batadv_dbg(BATADV_DBG_BLA, backbone_gw->bat_priv,
 			   "handle_announce(): CRC FAILED for %pM/%d (my = %#.4x, sent = %#.4x)\n",
-			   backbone_gw->orig, backbone_gw->vid,
+			   backbone_gw->orig,
+			   BATADV_PRINT_VID(backbone_gw->vid),
 			   backbone_gw->crc, crc);
 
 		batadv_bla_send_request(backbone_gw);
@@ -700,7 +703,7 @@ static int batadv_handle_request(struct batadv_priv *bat_priv,
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv,
 		   "handle_request(): REQUEST vid %d (sent by %pM)...\n",
-		   vid, ethhdr->h_source);
+		   BATADV_PRINT_VID(vid), ethhdr->h_source);
 
 	batadv_bla_answer_request(bat_priv, primary_if, vid);
 	return 1;
@@ -728,7 +731,7 @@ static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
 	/* this must be an UNCLAIM frame */
 	batadv_dbg(BATADV_DBG_BLA, bat_priv,
 		   "handle_unclaim(): UNCLAIM %pM on vid %d (sent by %pM)...\n",
-		   claim_addr, vid, backbone_gw->orig);
+		   claim_addr, BATADV_PRINT_VID(vid), backbone_gw->orig);
 
 	batadv_bla_del_claim(bat_priv, claim_addr, vid);
 	batadv_backbone_gw_free_ref(backbone_gw);
@@ -912,7 +915,8 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 	if (ret == 1)
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_process_claim(): received a claim frame from another group. From: %pM on vid %d ...(hw_src %pM, hw_dst %pM)\n",
-			   ethhdr->h_source, vid, hw_src, hw_dst);
+			   ethhdr->h_source, BATADV_PRINT_VID(vid), hw_src,
+			   hw_dst);
 
 	if (ret < 2)
 		return ret;
@@ -947,7 +951,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv,
 		   "bla_process_claim(): ERROR - this looks like a claim frame, but is useless. eth src %pM on vid %d ...(hw_src %pM, hw_dst %pM)\n",
-		   ethhdr->h_source, vid, hw_src, hw_dst);
+		   ethhdr->h_source, BATADV_PRINT_VID(vid), hw_src, hw_dst);
 	return 1;
 }
 
@@ -1628,7 +1632,7 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
 			is_own = batadv_compare_eth(claim->backbone_gw->orig,
 						    primary_addr);
 			seq_printf(seq, " * %pM on %5d by %pM [%c] (%#.4x)\n",
-				   claim->addr, claim->vid,
+				   claim->addr, BATADV_PRINT_VID(claim->vid),
 				   claim->backbone_gw->orig,
 				   (is_own ? 'x' : ' '),
 				   claim->backbone_gw->crc);
@@ -1681,7 +1685,8 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
 				continue;
 
 			seq_printf(seq, " * %pM on %5d %4i.%03is (%#.4x)\n",
-				   backbone_gw->orig, backbone_gw->vid, secs,
+				   backbone_gw->orig,
+				   BATADV_PRINT_VID(backbone_gw->vid), secs,
 				   msecs, backbone_gw->crc);
 		}
 		rcu_read_unlock();
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 19/21] batman-adv: print the VID properly

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

Since the MSB bits of any vid variable are now used for
storing flags, print the vid properly by taking the flags
away and printing -1 in case of VID representing no real
VLAN.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bridge_loop_avoidance.c | 37 +++++++++++++++++++---------------
 1 file changed, 21 insertions(+), 16 deletions(-)

diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 7354063..e9d8e0b 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -307,7 +307,8 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		 */
 		memcpy(ethhdr->h_source, mac, ETH_ALEN);
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
-			   "bla_send_claim(): CLAIM %pM on vid %d\n", mac, vid);
+			   "bla_send_claim(): CLAIM %pM on vid %d\n", mac,
+			   BATADV_PRINT_VID(vid));
 		break;
 	case BATADV_CLAIM_TYPE_UNCLAIM:
 		/* unclaim frame
@@ -316,7 +317,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		memcpy(hw_src, mac, ETH_ALEN);
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_send_claim(): UNCLAIM %pM on vid %d\n", mac,
-			   vid);
+			   BATADV_PRINT_VID(vid));
 		break;
 	case BATADV_CLAIM_TYPE_ANNOUNCE:
 		/* announcement frame
@@ -325,7 +326,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		memcpy(hw_src, mac, ETH_ALEN);
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_send_claim(): ANNOUNCE of %pM on vid %d\n",
-			   ethhdr->h_source, vid);
+			   ethhdr->h_source, BATADV_PRINT_VID(vid));
 		break;
 	case BATADV_CLAIM_TYPE_REQUEST:
 		/* request frame
@@ -336,7 +337,8 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		memcpy(ethhdr->h_dest, mac, ETH_ALEN);
 		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, vid);
+			   ethhdr->h_source, ethhdr->h_dest,
+			   BATADV_PRINT_VID(vid));
 		break;
 	}
 
@@ -381,7 +383,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv,
 		   "bla_get_backbone_gw(): not found (%pM, %d), creating new entry\n",
-		   orig, vid);
+		   orig, BATADV_PRINT_VID(vid));
 
 	entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 	if (!entry)
@@ -573,7 +575,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
 		atomic_set(&claim->refcount, 2);
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_add_claim(): adding new entry %pM, vid %d to hash ...\n",
-			   mac, vid);
+			   mac, BATADV_PRINT_VID(vid));
 		hash_added = batadv_hash_add(bat_priv->bla.claim_hash,
 					     batadv_compare_claim,
 					     batadv_choose_claim, claim,
@@ -592,7 +594,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
 
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_add_claim(): changing ownership for %pM, vid %d\n",
-			   mac, vid);
+			   mac, BATADV_PRINT_VID(vid));
 
 		claim->backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
 		batadv_backbone_gw_free_ref(claim->backbone_gw);
@@ -623,7 +625,7 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
 		return;
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla_del_claim(): %pM, vid %d\n",
-		   mac, vid);
+		   mac, BATADV_PRINT_VID(vid));
 
 	batadv_hash_remove(bat_priv->bla.claim_hash, batadv_compare_claim,
 			   batadv_choose_claim, claim);
@@ -659,12 +661,13 @@ static int batadv_handle_announce(struct batadv_priv *bat_priv,
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv,
 		   "handle_announce(): ANNOUNCE vid %d (sent by %pM)... CRC = %#.4x\n",
-		   vid, backbone_gw->orig, crc);
+		   BATADV_PRINT_VID(vid), backbone_gw->orig, crc);
 
 	if (backbone_gw->crc != crc) {
 		batadv_dbg(BATADV_DBG_BLA, backbone_gw->bat_priv,
 			   "handle_announce(): CRC FAILED for %pM/%d (my = %#.4x, sent = %#.4x)\n",
-			   backbone_gw->orig, backbone_gw->vid,
+			   backbone_gw->orig,
+			   BATADV_PRINT_VID(backbone_gw->vid),
 			   backbone_gw->crc, crc);
 
 		batadv_bla_send_request(backbone_gw);
@@ -700,7 +703,7 @@ static int batadv_handle_request(struct batadv_priv *bat_priv,
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv,
 		   "handle_request(): REQUEST vid %d (sent by %pM)...\n",
-		   vid, ethhdr->h_source);
+		   BATADV_PRINT_VID(vid), ethhdr->h_source);
 
 	batadv_bla_answer_request(bat_priv, primary_if, vid);
 	return 1;
@@ -728,7 +731,7 @@ static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
 	/* this must be an UNCLAIM frame */
 	batadv_dbg(BATADV_DBG_BLA, bat_priv,
 		   "handle_unclaim(): UNCLAIM %pM on vid %d (sent by %pM)...\n",
-		   claim_addr, vid, backbone_gw->orig);
+		   claim_addr, BATADV_PRINT_VID(vid), backbone_gw->orig);
 
 	batadv_bla_del_claim(bat_priv, claim_addr, vid);
 	batadv_backbone_gw_free_ref(backbone_gw);
@@ -912,7 +915,8 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 	if (ret == 1)
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_process_claim(): received a claim frame from another group. From: %pM on vid %d ...(hw_src %pM, hw_dst %pM)\n",
-			   ethhdr->h_source, vid, hw_src, hw_dst);
+			   ethhdr->h_source, BATADV_PRINT_VID(vid), hw_src,
+			   hw_dst);
 
 	if (ret < 2)
 		return ret;
@@ -947,7 +951,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv,
 		   "bla_process_claim(): ERROR - this looks like a claim frame, but is useless. eth src %pM on vid %d ...(hw_src %pM, hw_dst %pM)\n",
-		   ethhdr->h_source, vid, hw_src, hw_dst);
+		   ethhdr->h_source, BATADV_PRINT_VID(vid), hw_src, hw_dst);
 	return 1;
 }
 
@@ -1628,7 +1632,7 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
 			is_own = batadv_compare_eth(claim->backbone_gw->orig,
 						    primary_addr);
 			seq_printf(seq, " * %pM on %5d by %pM [%c] (%#.4x)\n",
-				   claim->addr, claim->vid,
+				   claim->addr, BATADV_PRINT_VID(claim->vid),
 				   claim->backbone_gw->orig,
 				   (is_own ? 'x' : ' '),
 				   claim->backbone_gw->crc);
@@ -1681,7 +1685,8 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
 				continue;
 
 			seq_printf(seq, " * %pM on %5d %4i.%03is (%#.4x)\n",
-				   backbone_gw->orig, backbone_gw->vid, secs,
+				   backbone_gw->orig,
+				   BATADV_PRINT_VID(backbone_gw->vid), secs,
 				   msecs, backbone_gw->crc);
 		}
 		rcu_read_unlock();
-- 
1.8.1.5

[PATCH 20/21] batman-adv: Move call to batadv_nc_skb_forward() from routing.c to send.c

[Antonio Quartulli]

From: Martin Hundebøll <martin@hundeboll.net>

The call to batadv_nc_skb_forward() fits better in
batadv_send_skb_to_orig(), as this is where the actual next hop is
looked up.

To let the caller of batadv_send_skb_to_orig() know wether the skb is
transmitted, buffered or failed, the return value is changed from
boolean to int.

Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/network-coding.c    |  5 ++---
 net/batman-adv/network-coding.h    |  6 ++----
 net/batman-adv/routing.c           | 23 +++++++++++++----------
 net/batman-adv/send.c              | 27 +++++++++++++++++++--------
 net/batman-adv/send.h              |  6 +++---
 net/batman-adv/translation-table.c | 12 +++++++-----
 net/batman-adv/unicast.c           |  2 +-
 net/batman-adv/vis.c               |  7 ++++---
 8 files changed, 51 insertions(+), 37 deletions(-)

diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 22cd51f..a487d46 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1359,18 +1359,17 @@ static bool batadv_nc_skb_add_to_path(struct sk_buff *skb,
  *  buffer
  * @skb: data skb to forward
  * @neigh_node: next hop to forward packet to
- * @ethhdr: pointer to the ethernet header inside the skb
  *
  * Returns true if the skb was consumed (encoded packet sent) or false otherwise
  */
 bool batadv_nc_skb_forward(struct sk_buff *skb,
-			   struct batadv_neigh_node *neigh_node,
-			   struct ethhdr *ethhdr)
+			   struct batadv_neigh_node *neigh_node)
 {
 	const struct net_device *netdev = neigh_node->if_incoming->soft_iface;
 	struct batadv_priv *bat_priv = netdev_priv(netdev);
 	struct batadv_unicast_packet *packet;
 	struct batadv_nc_path *nc_path;
+	struct ethhdr *ethhdr = eth_hdr(skb);
 	__be32 packet_id;
 	u8 *payload;
 
diff --git a/net/batman-adv/network-coding.h b/net/batman-adv/network-coding.h
index 4fa6d0c..85a4ec8 100644
--- a/net/batman-adv/network-coding.h
+++ b/net/batman-adv/network-coding.h
@@ -36,8 +36,7 @@ void batadv_nc_purge_orig(struct batadv_priv *bat_priv,
 void batadv_nc_init_bat_priv(struct batadv_priv *bat_priv);
 void batadv_nc_init_orig(struct batadv_orig_node *orig_node);
 bool batadv_nc_skb_forward(struct sk_buff *skb,
-			   struct batadv_neigh_node *neigh_node,
-			   struct ethhdr *ethhdr);
+			   struct batadv_neigh_node *neigh_node);
 void batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv,
 				      struct sk_buff *skb);
 void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv,
@@ -87,8 +86,7 @@ static inline void batadv_nc_init_orig(struct batadv_orig_node *orig_node)
 }
 
 static inline bool batadv_nc_skb_forward(struct sk_buff *skb,
-					 struct batadv_neigh_node *neigh_node,
-					 struct ethhdr *ethhdr)
+					 struct batadv_neigh_node *neigh_node)
 {
 	return false;
 }
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index fad0846..2f0bd3f 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -285,7 +285,7 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv *bat_priv,
 	icmp_packet->msg_type = BATADV_ECHO_REPLY;
 	icmp_packet->header.ttl = BATADV_TTL;
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = NET_RX_SUCCESS;
 
 out:
@@ -333,7 +333,7 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv *bat_priv,
 	icmp_packet->msg_type = BATADV_TTL_EXCEEDED;
 	icmp_packet->header.ttl = BATADV_TTL;
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = NET_RX_SUCCESS;
 
 out:
@@ -410,7 +410,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
 	icmp_packet->header.ttl--;
 
 	/* route it */
-	if (batadv_send_skb_to_orig(skb, orig_node, recv_if))
+	if (batadv_send_skb_to_orig(skb, orig_node, recv_if) != NET_XMIT_DROP)
 		ret = NET_RX_SUCCESS;
 
 out:
@@ -775,7 +775,7 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
 	struct batadv_neigh_node *neigh_node = NULL;
 	struct batadv_unicast_packet *unicast_packet;
 	struct ethhdr *ethhdr = eth_hdr(skb);
-	int ret = NET_RX_DROP;
+	int res, ret = NET_RX_DROP;
 	struct sk_buff *new_skb;
 
 	unicast_packet = (struct batadv_unicast_packet *)skb->data;
@@ -835,16 +835,19 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
 	/* decrement ttl */
 	unicast_packet->header.ttl--;
 
-	/* network code packet if possible */
-	if (batadv_nc_skb_forward(skb, neigh_node, ethhdr)) {
-		ret = NET_RX_SUCCESS;
-	} else if (batadv_send_skb_to_orig(skb, orig_node, recv_if)) {
-		ret = NET_RX_SUCCESS;
+	res = batadv_send_skb_to_orig(skb, orig_node, recv_if);
 
-		/* Update stats counter */
+	/* translate transmit result into receive result */
+	if (res == NET_XMIT_SUCCESS) {
+		/* skb was transmitted and consumed */
 		batadv_inc_counter(bat_priv, BATADV_CNT_FORWARD);
 		batadv_add_counter(bat_priv, BATADV_CNT_FORWARD_BYTES,
 				   skb->len + ETH_HLEN);
+
+		ret = NET_RX_SUCCESS;
+	} else if (res == NET_XMIT_POLICED) {
+		/* skb was buffered and consumed */
+		ret = NET_RX_SUCCESS;
 	}
 
 out:
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index ce69f45..e9ff8d8 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -96,26 +96,37 @@ send_skb_err:
  * host, NULL can be passed as recv_if and no interface alternating is
  * attempted.
  *
- * Returns TRUE on success; FALSE otherwise.
+ * Returns NET_XMIT_SUCCESS on success, NET_XMIT_DROP on failure, or
+ * NET_XMIT_POLICED if the skb is buffered for later transmit.
  */
-bool batadv_send_skb_to_orig(struct sk_buff *skb,
-			     struct batadv_orig_node *orig_node,
-			     struct batadv_hard_iface *recv_if)
+int batadv_send_skb_to_orig(struct sk_buff *skb,
+			    struct batadv_orig_node *orig_node,
+			    struct batadv_hard_iface *recv_if)
 {
 	struct batadv_priv *bat_priv = orig_node->bat_priv;
 	struct batadv_neigh_node *neigh_node;
+	int ret = NET_XMIT_DROP;
 
 	/* batadv_find_router() increases neigh_nodes refcount if found. */
 	neigh_node = batadv_find_router(bat_priv, orig_node, recv_if);
 	if (!neigh_node)
-		return false;
+		return ret;
 
-	/* route it */
-	batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
+	/* try to network code the packet, if it is received on an interface
+	 * (i.e. being forwarded). If the packet originates from this node or if
+	 * network coding fails, then send the packet as usual.
+	 */
+	if (recv_if && batadv_nc_skb_forward(skb, neigh_node)) {
+		ret = NET_XMIT_POLICED;
+	} else {
+		batadv_send_skb_packet(skb, neigh_node->if_incoming,
+				       neigh_node->addr);
+		ret = NET_XMIT_SUCCESS;
+	}
 
 	batadv_neigh_node_free_ref(neigh_node);
 
-	return true;
+	return ret;
 }
 
 void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface)
diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h
index 38e662f..e7b1788 100644
--- a/net/batman-adv/send.h
+++ b/net/batman-adv/send.h
@@ -23,9 +23,9 @@
 int batadv_send_skb_packet(struct sk_buff *skb,
 			   struct batadv_hard_iface *hard_iface,
 			   const uint8_t *dst_addr);
-bool batadv_send_skb_to_orig(struct sk_buff *skb,
-			     struct batadv_orig_node *orig_node,
-			     struct batadv_hard_iface *recv_if);
+int batadv_send_skb_to_orig(struct sk_buff *skb,
+			    struct batadv_orig_node *orig_node,
+			    struct batadv_hard_iface *recv_if);
 void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface);
 int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
 				    const struct sk_buff *skb,
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index e272f68..429aeef 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1713,7 +1713,7 @@ static int batadv_send_tt_request(struct batadv_priv *bat_priv,
 
 	batadv_inc_counter(bat_priv, BATADV_CNT_TT_REQUEST_TX);
 
-	if (batadv_send_skb_to_orig(skb, dst_orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, dst_orig_node, NULL) != NET_XMIT_DROP)
 		ret = 0;
 
 out:
@@ -1737,7 +1737,7 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
 	struct batadv_orig_node *req_dst_orig_node;
 	struct batadv_orig_node *res_dst_orig_node = NULL;
 	uint8_t orig_ttvn, req_ttvn, ttvn;
-	int ret = false;
+	int res, ret = false;
 	unsigned char *tt_buff;
 	bool full_table;
 	uint16_t tt_len, tt_tot;
@@ -1832,8 +1832,10 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
 
 	batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_TX);
 
-	if (batadv_send_skb_to_orig(skb, res_dst_orig_node, NULL))
+	res = batadv_send_skb_to_orig(skb, res_dst_orig_node, NULL);
+	if (res != NET_XMIT_DROP)
 		ret = true;
+
 	goto out;
 
 unlock:
@@ -1947,7 +1949,7 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 
 	batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_TX);
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = true;
 	goto out;
 
@@ -2260,7 +2262,7 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
 
 	batadv_inc_counter(bat_priv, BATADV_CNT_TT_ROAM_ADV_TX);
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = 0;
 
 out:
diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c
index 0bb3b59..dc8b5d4 100644
--- a/net/batman-adv/unicast.c
+++ b/net/batman-adv/unicast.c
@@ -464,7 +464,7 @@ find_router:
 		goto out;
 	}
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = 0;
 
 out:
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index 94eaeb5..4983340 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -697,7 +697,7 @@ static void batadv_broadcast_vis_packet(struct batadv_priv *bat_priv,
 	struct batadv_orig_node *orig_node;
 	struct batadv_vis_packet *packet;
 	struct sk_buff *skb;
-	uint32_t i;
+	uint32_t i, res;
 
 
 	packet = (struct batadv_vis_packet *)info->skb_packet->data;
@@ -724,7 +724,8 @@ static void batadv_broadcast_vis_packet(struct batadv_priv *bat_priv,
 			if (!skb)
 				continue;
 
-			if (!batadv_send_skb_to_orig(skb, orig_node, NULL))
+			res = batadv_send_skb_to_orig(skb, orig_node, NULL);
+			if (res == NET_XMIT_DROP)
 				kfree_skb(skb);
 		}
 		rcu_read_unlock();
@@ -748,7 +749,7 @@ static void batadv_unicast_vis_packet(struct batadv_priv *bat_priv,
 	if (!skb)
 		goto out;
 
-	if (!batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) == NET_XMIT_DROP)
 		kfree_skb(skb);
 
 out:
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 20/21] batman-adv: Move call to batadv_nc_skb_forward() from routing.c to send.c

[Antonio Quartulli]

From: Martin Hundebøll <martin@hundeboll.net>

The call to batadv_nc_skb_forward() fits better in
batadv_send_skb_to_orig(), as this is where the actual next hop is
looked up.

To let the caller of batadv_send_skb_to_orig() know wether the skb is
transmitted, buffered or failed, the return value is changed from
boolean to int.

Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 net/batman-adv/network-coding.c    |  5 ++---
 net/batman-adv/network-coding.h    |  6 ++----
 net/batman-adv/routing.c           | 23 +++++++++++++----------
 net/batman-adv/send.c              | 27 +++++++++++++++++++--------
 net/batman-adv/send.h              |  6 +++---
 net/batman-adv/translation-table.c | 12 +++++++-----
 net/batman-adv/unicast.c           |  2 +-
 net/batman-adv/vis.c               |  7 ++++---
 8 files changed, 51 insertions(+), 37 deletions(-)

diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 22cd51f..a487d46 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1359,18 +1359,17 @@ static bool batadv_nc_skb_add_to_path(struct sk_buff *skb,
  *  buffer
  * @skb: data skb to forward
  * @neigh_node: next hop to forward packet to
- * @ethhdr: pointer to the ethernet header inside the skb
  *
  * Returns true if the skb was consumed (encoded packet sent) or false otherwise
  */
 bool batadv_nc_skb_forward(struct sk_buff *skb,
-			   struct batadv_neigh_node *neigh_node,
-			   struct ethhdr *ethhdr)
+			   struct batadv_neigh_node *neigh_node)
 {
 	const struct net_device *netdev = neigh_node->if_incoming->soft_iface;
 	struct batadv_priv *bat_priv = netdev_priv(netdev);
 	struct batadv_unicast_packet *packet;
 	struct batadv_nc_path *nc_path;
+	struct ethhdr *ethhdr = eth_hdr(skb);
 	__be32 packet_id;
 	u8 *payload;
 
diff --git a/net/batman-adv/network-coding.h b/net/batman-adv/network-coding.h
index 4fa6d0c..85a4ec8 100644
--- a/net/batman-adv/network-coding.h
+++ b/net/batman-adv/network-coding.h
@@ -36,8 +36,7 @@ void batadv_nc_purge_orig(struct batadv_priv *bat_priv,
 void batadv_nc_init_bat_priv(struct batadv_priv *bat_priv);
 void batadv_nc_init_orig(struct batadv_orig_node *orig_node);
 bool batadv_nc_skb_forward(struct sk_buff *skb,
-			   struct batadv_neigh_node *neigh_node,
-			   struct ethhdr *ethhdr);
+			   struct batadv_neigh_node *neigh_node);
 void batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv,
 				      struct sk_buff *skb);
 void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv,
@@ -87,8 +86,7 @@ static inline void batadv_nc_init_orig(struct batadv_orig_node *orig_node)
 }
 
 static inline bool batadv_nc_skb_forward(struct sk_buff *skb,
-					 struct batadv_neigh_node *neigh_node,
-					 struct ethhdr *ethhdr)
+					 struct batadv_neigh_node *neigh_node)
 {
 	return false;
 }
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index fad0846..2f0bd3f 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -285,7 +285,7 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv *bat_priv,
 	icmp_packet->msg_type = BATADV_ECHO_REPLY;
 	icmp_packet->header.ttl = BATADV_TTL;
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = NET_RX_SUCCESS;
 
 out:
@@ -333,7 +333,7 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv *bat_priv,
 	icmp_packet->msg_type = BATADV_TTL_EXCEEDED;
 	icmp_packet->header.ttl = BATADV_TTL;
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = NET_RX_SUCCESS;
 
 out:
@@ -410,7 +410,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
 	icmp_packet->header.ttl--;
 
 	/* route it */
-	if (batadv_send_skb_to_orig(skb, orig_node, recv_if))
+	if (batadv_send_skb_to_orig(skb, orig_node, recv_if) != NET_XMIT_DROP)
 		ret = NET_RX_SUCCESS;
 
 out:
@@ -775,7 +775,7 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
 	struct batadv_neigh_node *neigh_node = NULL;
 	struct batadv_unicast_packet *unicast_packet;
 	struct ethhdr *ethhdr = eth_hdr(skb);
-	int ret = NET_RX_DROP;
+	int res, ret = NET_RX_DROP;
 	struct sk_buff *new_skb;
 
 	unicast_packet = (struct batadv_unicast_packet *)skb->data;
@@ -835,16 +835,19 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
 	/* decrement ttl */
 	unicast_packet->header.ttl--;
 
-	/* network code packet if possible */
-	if (batadv_nc_skb_forward(skb, neigh_node, ethhdr)) {
-		ret = NET_RX_SUCCESS;
-	} else if (batadv_send_skb_to_orig(skb, orig_node, recv_if)) {
-		ret = NET_RX_SUCCESS;
+	res = batadv_send_skb_to_orig(skb, orig_node, recv_if);
 
-		/* Update stats counter */
+	/* translate transmit result into receive result */
+	if (res == NET_XMIT_SUCCESS) {
+		/* skb was transmitted and consumed */
 		batadv_inc_counter(bat_priv, BATADV_CNT_FORWARD);
 		batadv_add_counter(bat_priv, BATADV_CNT_FORWARD_BYTES,
 				   skb->len + ETH_HLEN);
+
+		ret = NET_RX_SUCCESS;
+	} else if (res == NET_XMIT_POLICED) {
+		/* skb was buffered and consumed */
+		ret = NET_RX_SUCCESS;
 	}
 
 out:
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index ce69f45..e9ff8d8 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -96,26 +96,37 @@ send_skb_err:
  * host, NULL can be passed as recv_if and no interface alternating is
  * attempted.
  *
- * Returns TRUE on success; FALSE otherwise.
+ * Returns NET_XMIT_SUCCESS on success, NET_XMIT_DROP on failure, or
+ * NET_XMIT_POLICED if the skb is buffered for later transmit.
  */
-bool batadv_send_skb_to_orig(struct sk_buff *skb,
-			     struct batadv_orig_node *orig_node,
-			     struct batadv_hard_iface *recv_if)
+int batadv_send_skb_to_orig(struct sk_buff *skb,
+			    struct batadv_orig_node *orig_node,
+			    struct batadv_hard_iface *recv_if)
 {
 	struct batadv_priv *bat_priv = orig_node->bat_priv;
 	struct batadv_neigh_node *neigh_node;
+	int ret = NET_XMIT_DROP;
 
 	/* batadv_find_router() increases neigh_nodes refcount if found. */
 	neigh_node = batadv_find_router(bat_priv, orig_node, recv_if);
 	if (!neigh_node)
-		return false;
+		return ret;
 
-	/* route it */
-	batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
+	/* try to network code the packet, if it is received on an interface
+	 * (i.e. being forwarded). If the packet originates from this node or if
+	 * network coding fails, then send the packet as usual.
+	 */
+	if (recv_if && batadv_nc_skb_forward(skb, neigh_node)) {
+		ret = NET_XMIT_POLICED;
+	} else {
+		batadv_send_skb_packet(skb, neigh_node->if_incoming,
+				       neigh_node->addr);
+		ret = NET_XMIT_SUCCESS;
+	}
 
 	batadv_neigh_node_free_ref(neigh_node);
 
-	return true;
+	return ret;
 }
 
 void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface)
diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h
index 38e662f..e7b1788 100644
--- a/net/batman-adv/send.h
+++ b/net/batman-adv/send.h
@@ -23,9 +23,9 @@
 int batadv_send_skb_packet(struct sk_buff *skb,
 			   struct batadv_hard_iface *hard_iface,
 			   const uint8_t *dst_addr);
-bool batadv_send_skb_to_orig(struct sk_buff *skb,
-			     struct batadv_orig_node *orig_node,
-			     struct batadv_hard_iface *recv_if);
+int batadv_send_skb_to_orig(struct sk_buff *skb,
+			    struct batadv_orig_node *orig_node,
+			    struct batadv_hard_iface *recv_if);
 void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface);
 int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
 				    const struct sk_buff *skb,
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index e272f68..429aeef 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1713,7 +1713,7 @@ static int batadv_send_tt_request(struct batadv_priv *bat_priv,
 
 	batadv_inc_counter(bat_priv, BATADV_CNT_TT_REQUEST_TX);
 
-	if (batadv_send_skb_to_orig(skb, dst_orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, dst_orig_node, NULL) != NET_XMIT_DROP)
 		ret = 0;
 
 out:
@@ -1737,7 +1737,7 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
 	struct batadv_orig_node *req_dst_orig_node;
 	struct batadv_orig_node *res_dst_orig_node = NULL;
 	uint8_t orig_ttvn, req_ttvn, ttvn;
-	int ret = false;
+	int res, ret = false;
 	unsigned char *tt_buff;
 	bool full_table;
 	uint16_t tt_len, tt_tot;
@@ -1832,8 +1832,10 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
 
 	batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_TX);
 
-	if (batadv_send_skb_to_orig(skb, res_dst_orig_node, NULL))
+	res = batadv_send_skb_to_orig(skb, res_dst_orig_node, NULL);
+	if (res != NET_XMIT_DROP)
 		ret = true;
+
 	goto out;
 
 unlock:
@@ -1947,7 +1949,7 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 
 	batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_TX);
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = true;
 	goto out;
 
@@ -2260,7 +2262,7 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
 
 	batadv_inc_counter(bat_priv, BATADV_CNT_TT_ROAM_ADV_TX);
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = 0;
 
 out:
diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c
index 0bb3b59..dc8b5d4 100644
--- a/net/batman-adv/unicast.c
+++ b/net/batman-adv/unicast.c
@@ -464,7 +464,7 @@ find_router:
 		goto out;
 	}
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = 0;
 
 out:
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index 94eaeb5..4983340 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -697,7 +697,7 @@ static void batadv_broadcast_vis_packet(struct batadv_priv *bat_priv,
 	struct batadv_orig_node *orig_node;
 	struct batadv_vis_packet *packet;
 	struct sk_buff *skb;
-	uint32_t i;
+	uint32_t i, res;
 
 
 	packet = (struct batadv_vis_packet *)info->skb_packet->data;
@@ -724,7 +724,8 @@ static void batadv_broadcast_vis_packet(struct batadv_priv *bat_priv,
 			if (!skb)
 				continue;
 
-			if (!batadv_send_skb_to_orig(skb, orig_node, NULL))
+			res = batadv_send_skb_to_orig(skb, orig_node, NULL);
+			if (res == NET_XMIT_DROP)
 				kfree_skb(skb);
 		}
 		rcu_read_unlock();
@@ -748,7 +749,7 @@ static void batadv_unicast_vis_packet(struct batadv_priv *bat_priv,
 	if (!skb)
 		goto out;
 
-	if (!batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) == NET_XMIT_DROP)
 		kfree_skb(skb);
 
 out:
-- 
1.8.1.5

[PATCH 21/21] batman-adv: Start new development cycle

[Antonio Quartulli]

From: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 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 6f25ef2..5e9aebb 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -26,7 +26,7 @@
 #define BATADV_DRIVER_DEVICE "batman-adv"
 
 #ifndef BATADV_SOURCE_VERSION
-#define BATADV_SOURCE_VERSION "2013.2.0"
+#define BATADV_SOURCE_VERSION "2013.3.0"
 #endif
 
 /* B.A.T.M.A.N. parameters */
-- 
1.8.1.5

[B.A.T.M.A.N.] [PATCH 21/21] batman-adv: Start new development cycle

[Antonio Quartulli]

From: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 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 6f25ef2..5e9aebb 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -26,7 +26,7 @@
 #define BATADV_DRIVER_DEVICE "batman-adv"
 
 #ifndef BATADV_SOURCE_VERSION
-#define BATADV_SOURCE_VERSION "2013.2.0"
+#define BATADV_SOURCE_VERSION "2013.3.0"
 #endif
 
 /* B.A.T.M.A.N. parameters */
-- 
1.8.1.5

Re: pull request: batman-adv 2013-05-29b

[Antonio Quartulli]

[-- Attachment #1: Type: text/plain, Size: 664 bytes --]

On Wed, May 29, 2013 at 10:10:30AM +0200, Antonio Quartulli wrote:
> Hello David,
> 
> this is again our pull request intended for net-next/linux-3.11.
> 
> Apparently my mail server decided that 14/21 was spam and refused all the
> subsequent emails. It's a first step towards the automatic kernel maintenance
> :-)

David, sorry but it happened again.

I'm in touch with my provider admin in order to solve the issue.
Meanwhile I sent the patches divided in two subsets and I hope it did not create
troubles to patchwork.

Sorry for the noise.

Regards,

-- 
Antonio Quartulli

..each of us alone is worth nothing..
Ernesto "Che" Guevara

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]

Re: [B.A.T.M.A.N.] pull request: batman-adv 2013-05-29b

[Antonio Quartulli]

[-- Attachment #1: Type: text/plain, Size: 664 bytes --]

On Wed, May 29, 2013 at 10:10:30AM +0200, Antonio Quartulli wrote:
> Hello David,
> 
> this is again our pull request intended for net-next/linux-3.11.
> 
> Apparently my mail server decided that 14/21 was spam and refused all the
> subsequent emails. It's a first step towards the automatic kernel maintenance
> :-)

David, sorry but it happened again.

I'm in touch with my provider admin in order to solve the issue.
Meanwhile I sent the patches divided in two subsets and I hope it did not create
troubles to patchwork.

Sorry for the noise.

Regards,

-- 
Antonio Quartulli

..each of us alone is worth nothing..
Ernesto "Che" Guevara

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]

Re: pull request: batman-adv 2013-05-29b

[David Miller]

From: Antonio Quartulli <ordex@autistici.org>
Date: Wed, 29 May 2013 10:10:30 +0200

> The only real behavioural change in this batch is the broadcast overhead
> reduction on non-wireless interfaces brought by Matthias Schiffer.
> 
> The rest is made up by code cleanups and refactoring.
> 
> Two highlights on the refactoring are the introduction of
> netdev_alloc_skb_ip_align() to avoid to deal with NET_IP_ALIGN manually and the
> introduction of the eth_hdr() wherever it was possible in order to improve
> readability.
> 
> Please pull or let me know of any problem.
 ...
> The following changes since commit 06ecf24bdf2b7afc6c8fd13de6dba2a96dd331b6:
> 
>   net: Fix build warnings after mac_header and transport_header became __u16. (2013-05-28 13:15:50 -0700)
> 
> are available in the git repository at:
> 
>   git://git.open-mesh.org/linux-merge.git tags/batman-adv-for-davem

Pulled, thanks Antonio.

Re: [B.A.T.M.A.N.] pull request: batman-adv 2013-05-29b

[David Miller]

From: Antonio Quartulli <ordex@autistici.org>
Date: Wed, 29 May 2013 10:10:30 +0200

> The only real behavioural change in this batch is the broadcast overhead
> reduction on non-wireless interfaces brought by Matthias Schiffer.
> 
> The rest is made up by code cleanups and refactoring.
> 
> Two highlights on the refactoring are the introduction of
> netdev_alloc_skb_ip_align() to avoid to deal with NET_IP_ALIGN manually and the
> introduction of the eth_hdr() wherever it was possible in order to improve
> readability.
> 
> Please pull or let me know of any problem.
 ...
> The following changes since commit 06ecf24bdf2b7afc6c8fd13de6dba2a96dd331b6:
> 
>   net: Fix build warnings after mac_header and transport_header became __u16. (2013-05-28 13:15:50 -0700)
> 
> are available in the git repository at:
> 
>   git://git.open-mesh.org/linux-merge.git tags/batman-adv-for-davem

Pulled, thanks Antonio.

pull request: batman-adv 2013-05-29

[Antonio Quartulli]

Hello David,

this is our pull request intended for net-next/linux-3.11.

The only real behavioural change in this batch is the broadcast overhead
reduction on non-wireless interfaces brought by Matthias Schiffer.

The rest is made up by code cleanups and refactoring.

Two highlights on the refactoring are the introduction of
netdev_alloc_skb_ip_align() to avoid to deal with NET_IP_ALIGN manually and the
introduction of the eth_hdr() wherever it was possible in order to improve
readability.


Please pull or let me know of any problem.

Thanks a lot,
	Antonio



The following changes since commit 06ecf24bdf2b7afc6c8fd13de6dba2a96dd331b6:

  net: Fix build warnings after mac_header and transport_header became __u16. (2013-05-28 13:15:50 -0700)

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 6715fd3f0538e805b6a769d66823ec16b8b647ac:

  batman-adv: Start new development cycle (2013-05-29 02:44:56 +0200)

----------------------------------------------------------------
Included changes:
- reduce broadcast overhead on non-lossy wired links
- fix typos in kernel doc
- use eth_hdr() when possible
- use netdev_allock_skb_ip_align() and don't deal with NET_IP_ALIGN
- change VID semantic in the BLA component
- other minor cleanups and code refactoring

----------------------------------------------------------------
Antonio Quartulli (14):
      batman-adv: drop useless argument seqno in neighbor creation
      batman-adv: slightly improve neighbor creation debug message
      batman-adv: don't check the source address twice
      batman-adv: don't check compat version twice
      batman-adv: do not silently ignore wrong condition
      batman-adv: don't initialise batman_iv private members in hard-interface.c
      batman-adv: use eth_hdr() when it makes sense
      batman-adv: move ring_buffer helper functions in bat_iv_ogm
      batman-adv: move batadv_slide_own_bcast_window to bat_iv_ogm.c
      batman-adv: refactor batadv_tt_local_event()
      batman-adv: don't deal with NET_IP_ALIGN manually
      batman-adv: pass a 16bit long flag argument to tt_global_add()
      batman-adv: change VID semantic in the BLA code
      batman-adv: print the VID properly

Linus Lüssing (1):
      batman-adv: Remove unnecessary INIT_HLIST_NODE() calls

Marek Lindner (2):
      batman-adv: fix typos in kernel doc & comments
      batman-adv: do not print orig nodes without nc neighbors on nc table print

Martin Hundebøll (1):
      batman-adv: Move call to batadv_nc_skb_forward() from routing.c to send.c

Matthias Schiffer (2):
      batman-adv: split batadv_is_wifi_iface() into two functions
      batman-adv: send each broadcast only once on non-wireless interfaces

Simon Wunderlich (1):
      batman-adv: Start new development cycle

 net/batman-adv/Makefile                |   1 -
 net/batman-adv/bat_iv_ogm.c            | 122 ++++++++++++++++++++++++---------
 net/batman-adv/bridge_loop_avoidance.c |  94 +++++++++++++------------
 net/batman-adv/bridge_loop_avoidance.h |  12 ++--
 net/batman-adv/distributed-arp-table.c |  82 +++++++++++-----------
 net/batman-adv/hard-interface.c        |  96 +++++++++++++++-----------
 net/batman-adv/icmp_socket.c           |   4 +-
 net/batman-adv/main.h                  |  18 ++++-
 net/batman-adv/network-coding.c        |  22 +++---
 net/batman-adv/network-coding.h        |   6 +-
 net/batman-adv/originator.c            |   6 +-
 net/batman-adv/originator.h            |   2 +-
 net/batman-adv/ring_buffer.c           |  51 --------------
 net/batman-adv/ring_buffer.h           |  27 --------
 net/batman-adv/routing.c               |  64 +++++------------
 net/batman-adv/routing.h               |   1 -
 net/batman-adv/send.c                  |  36 ++++++----
 net/batman-adv/send.h                  |   6 +-
 net/batman-adv/soft-interface.c        |   6 +-
 net/batman-adv/translation-table.c     |  74 +++++++++++++-------
 net/batman-adv/translation-table.h     |   2 +-
 net/batman-adv/types.h                 |   6 +-
 net/batman-adv/unicast.c               |   2 +-
 net/batman-adv/vis.c                   |  19 ++---
 24 files changed, 395 insertions(+), 364 deletions(-)
 delete mode 100644 net/batman-adv/ring_buffer.c
 delete mode 100644 net/batman-adv/ring_buffer.h

[PATCH 04/21] batman-adv: drop useless argument seqno in neighbor creation

[Antonio Quartulli]

From: Antonio Quartulli <antonio@open-mesh.com>

the sequence number is not stored in struct neigh_node,
therefore there is no need to pass such value to the
neigh_node creation procedure.

At the moment the value is only used by a debug message, but
given the fact that the seqno is not related to the neighbor
object, it is better to print it elsewhere.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
 net/batman-adv/bat_iv_ogm.c | 11 ++++-------
 net/batman-adv/originator.c |  5 ++---
 net/batman-adv/originator.h |  2 +-
 3 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 071f288..da239c5 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -33,12 +33,11 @@ static struct batadv_neigh_node *
 batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
 			const uint8_t *neigh_addr,
 			struct batadv_orig_node *orig_node,
-			struct batadv_orig_node *orig_neigh, __be32 seqno)
+			struct batadv_orig_node *orig_neigh)
 {
 	struct batadv_neigh_node *neigh_node;
 
-	neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr,
-					   ntohl(seqno));
+	neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr);
 	if (!neigh_node)
 		goto out;
 
@@ -696,8 +695,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
 
 		neigh_node = batadv_iv_ogm_neigh_new(if_incoming,
 						     ethhdr->h_source,
-						     orig_node, orig_tmp,
-						     batadv_ogm_packet->seqno);
+						     orig_node, orig_tmp);
 
 		batadv_orig_node_free_ref(orig_tmp);
 		if (!neigh_node)
@@ -829,8 +827,7 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
 		neigh_node = batadv_iv_ogm_neigh_new(if_incoming,
 						     orig_neigh_node->orig,
 						     orig_neigh_node,
-						     orig_neigh_node,
-						     batadv_ogm_packet->seqno);
+						     orig_neigh_node);
 
 	if (!neigh_node)
 		goto out;
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index fad1a20..ddf5634 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -92,7 +92,7 @@ batadv_orig_node_get_router(struct batadv_orig_node *orig_node)
 
 struct batadv_neigh_node *
 batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
-		      const uint8_t *neigh_addr, uint32_t seqno)
+		      const uint8_t *neigh_addr)
 {
 	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
 	struct batadv_neigh_node *neigh_node;
@@ -110,8 +110,7 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
 	atomic_set(&neigh_node->refcount, 2);
 
 	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-		   "Creating new neighbor %pM, initial seqno %d\n",
-		   neigh_addr, seqno);
+		   "Creating new neighbor %pM\n", neigh_addr);
 
 out:
 	return neigh_node;
diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h
index 734e5a3..7887b84 100644
--- a/net/batman-adv/originator.h
+++ b/net/batman-adv/originator.h
@@ -31,7 +31,7 @@ struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv,
 					      const uint8_t *addr);
 struct batadv_neigh_node *
 batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
-		      const uint8_t *neigh_addr, uint32_t seqno);
+		      const uint8_t *neigh_addr);
 void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node);
 struct batadv_neigh_node *
 batadv_orig_node_get_router(struct batadv_orig_node *orig_node);
-- 
1.8.1.5