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authorEric Dumazet <edumazet@google.com>2015-10-16 23:00:01 +0300
committerDavid S. Miller <davem@davemloft.net>2015-10-19 08:26:02 +0300
commitdc6ef6be52154490c5c03f742e28bc781cc751b2 (patch)
tree8e297dd00c9cef73f67424b72a5669d6a97d13f7 /include/net/tcp.h
parent951b5d959f1da4bae8910085a2d8d6a3d374c72d (diff)
downloadlinux-dc6ef6be52154490c5c03f742e28bc781cc751b2.tar.xz
tcp: do not set queue_mapping on SYNACK
At the time of commit fff326990789 ("tcp: reflect SYN queue_mapping into SYNACK packets") we had little ways to cope with SYN floods. We no longer need to reflect incoming skb queue mappings, and instead can pick a TX queue based on cpu cooking the SYNACK, with normal XPS affinities. Note that all SYNACK retransmits were picking TX queue 0, this no longer is a win given that SYNACK rtx are now distributed on all cpus. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/tcp.h')
-rw-r--r--include/net/tcp.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index a6be56d5f0e3..eed94fc355c1 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1716,7 +1716,7 @@ struct tcp_request_sock_ops {
__u32 (*init_seq)(const struct sk_buff *skb);
int (*send_synack)(const struct sock *sk, struct dst_entry *dst,
struct flowi *fl, struct request_sock *req,
- u16 queue_mapping, struct tcp_fastopen_cookie *foc,
+ struct tcp_fastopen_cookie *foc,
bool attach_req);
};