diff options
| 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/ipv4/ip_output.c | |
| parent | 951b5d959f1da4bae8910085a2d8d6a3d374c72d (diff) | |
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/ipv4/ip_output.c')
| -rw-r--r-- | net/ipv4/ip_output.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 67404e1fe7d4..50e29737b584 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -1596,7 +1596,6 @@ void ip_send_unicast_reply(struct sock *sk, struct sk_buff *skb, arg->csumoffset) = csum_fold(csum_add(nskb->csum, arg->csum)); nskb->ip_summed = CHECKSUM_NONE; - skb_set_queue_mapping(nskb, skb_get_queue_mapping(skb)); ip_push_pending_frames(sk, &fl4); } out: |