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| author | Eric Dumazet <edumazet@google.com> | 2015-10-16 13:00:01 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-10-18 22:26:02 -0700 |
| commit | dc6ef6be52154490c5c03f742e28bc781cc751b2 (patch) | |
| tree | 8e297dd00c9cef73f67424b72a5669d6a97d13f7 /net/ipv6 | |
| parent | 951b5d959f1da4bae8910085a2d8d6a3d374c72d (diff) | |
| download | linux-stable-dc6ef6be52154490c5c03f742e28bc781cc751b2.tar.gz linux-stable-dc6ef6be52154490c5c03f742e28bc781cc751b2.tar.bz2 linux-stable-dc6ef6be52154490c5c03f742e28bc781cc751b2.zip | |
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 'net/ipv6')
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index acb06f86f372..f495d189f5e0 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -437,7 +437,6 @@ out: static int tcp_v6_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, bool attach_req) { @@ -462,7 +461,6 @@ static int tcp_v6_send_synack(const struct sock *sk, struct dst_entry *dst, if (np->repflow && ireq->pktopts) fl6->flowlabel = ip6_flowlabel(ipv6_hdr(ireq->pktopts)); - skb_set_queue_mapping(skb, queue_mapping); err = ip6_xmit(sk, skb, fl6, np->opt, np->tclass); err = net_xmit_eval(err); } |