From: Jiri Benc <jbenc@redhat.com>
To: netdev@vger.kernel.org
Cc: Jamal Hadi Salim <jhs@mojatatu.com>,
Cong Wang <xiyou.wangcong@gmail.com>,
Jiri Pirko <jiri@resnulli.us>
Subject: [PATCH net-next 2/2] net: sched: act_tunnel_key: make UDP checksum configurable
Date: Wed, 14 Jun 2017 21:19:31 +0200 [thread overview]
Message-ID: <c76f11daaa0e322c9c2ef7b919c30e7c9ff61f56.1497467840.git.jbenc@redhat.com> (raw)
In-Reply-To: <cover.1497467840.git.jbenc@redhat.com>
Allow requesting of zero UDP checksum for encapsulated packets. The name and
meaning of the attribute is "NO_CSUM" in order to have the same meaning of
the attribute missing and being 0.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
---
include/uapi/linux/tc_act/tc_tunnel_key.h | 1 +
net/sched/act_tunnel_key.c | 15 ++++++++++++---
2 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/include/uapi/linux/tc_act/tc_tunnel_key.h b/include/uapi/linux/tc_act/tc_tunnel_key.h
index 84ea55e1076b..afcd4be953e2 100644
--- a/include/uapi/linux/tc_act/tc_tunnel_key.h
+++ b/include/uapi/linux/tc_act/tc_tunnel_key.h
@@ -34,6 +34,7 @@ enum {
TCA_TUNNEL_KEY_ENC_KEY_ID, /* be64 */
TCA_TUNNEL_KEY_PAD,
TCA_TUNNEL_KEY_ENC_DST_PORT, /* be16 */
+ TCA_TUNNEL_KEY_NO_CSUM, /* u8 */
__TCA_TUNNEL_KEY_MAX,
};
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c
index b90effa10eb5..fd7e75679c69 100644
--- a/net/sched/act_tunnel_key.c
+++ b/net/sched/act_tunnel_key.c
@@ -67,6 +67,7 @@ static int tunnel_key_act(struct sk_buff *skb, const struct tc_action *a,
[TCA_TUNNEL_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
[TCA_TUNNEL_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
[TCA_TUNNEL_KEY_ENC_DST_PORT] = {.type = NLA_U16},
+ [TCA_TUNNEL_KEY_NO_CSUM] = { .type = NLA_U8 },
};
static int tunnel_key_init(struct net *net, struct nlattr *nla,
@@ -83,6 +84,7 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
bool exists = false;
__be16 dst_port = 0;
__be64 key_id;
+ __be16 flags;
int ret = 0;
int err;
@@ -113,6 +115,11 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
key_id = key32_to_tunnel_id(nla_get_be32(tb[TCA_TUNNEL_KEY_ENC_KEY_ID]));
+ flags = TUNNEL_KEY | TUNNEL_CSUM;
+ if (tb[TCA_TUNNEL_KEY_NO_CSUM] &&
+ nla_get_u8(tb[TCA_TUNNEL_KEY_NO_CSUM]))
+ flags &= ~TUNNEL_CSUM;
+
if (tb[TCA_TUNNEL_KEY_ENC_DST_PORT])
dst_port = nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_DST_PORT]);
@@ -125,7 +132,7 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
daddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]);
metadata = __ip_tun_set_dst(saddr, daddr, 0, 0,
- dst_port, TUNNEL_KEY | TUNNEL_CSUM,
+ dst_port, flags,
key_id, 0);
} else if (tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC] &&
tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]) {
@@ -136,7 +143,7 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
daddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]);
metadata = __ipv6_tun_set_dst(&saddr, &daddr, 0, 0, dst_port,
- 0, TUNNEL_KEY | TUNNEL_CSUM,
+ 0, flags,
key_id, 0);
}
@@ -266,7 +273,9 @@ static int tunnel_key_dump(struct sk_buff *skb, struct tc_action *a,
if (nla_put_be32(skb, TCA_TUNNEL_KEY_ENC_KEY_ID, key_id) ||
tunnel_key_dump_addresses(skb,
¶ms->tcft_enc_metadata->u.tun_info) ||
- nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_DST_PORT, key->tp_dst))
+ nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_DST_PORT, key->tp_dst) ||
+ nla_put_u8(skb, TCA_TUNNEL_KEY_NO_CSUM,
+ !(key->tun_flags & TUNNEL_CSUM)))
goto nla_put_failure;
}
--
1.8.3.1
next prev parent reply other threads:[~2017-06-14 19:24 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-14 19:19 [PATCH net-next 0/2] net: sched: act_tunnel_key: UDP checksums Jiri Benc
2017-06-14 19:19 ` [PATCH net-next 1/2] net: sched: act_tunnel_key: request UDP checksum by default Jiri Benc
2017-06-14 19:19 ` Jiri Benc [this message]
2017-06-14 19:29 ` [PATCH iproute2 1/2] tc: m_tunnel_key: reformat the usage text Jiri Benc
2017-06-14 19:30 ` [PATCH iproute2 2/2] tc: m_tunnel_key: add csum/nocsum option Jiri Benc
2017-06-14 20:38 ` Stephen Hemminger
2017-06-15 8:21 ` Jiri Benc
2017-06-16 16:12 ` Stephen Hemminger
2017-06-15 18:21 ` [PATCH net-next 0/2] net: sched: act_tunnel_key: UDP checksums David Miller
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