diff options
| author | Eric Dumazet <edumazet@google.com> | 2012-06-01 01:47:50 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-01 14:22:11 -0400 |
| commit | fff3269907897ee91406ece125795f53e722677e (patch) | |
| tree | 6c22d2afaea6bc6fd2b34311db9c80b5418b94d1 /net/core/skbuff.c | |
| parent | 7433819a1eefd4e74711fffd6d54e30a644ef240 (diff) | |
tcp: reflect SYN queue_mapping into SYNACK packets
While testing how linux behaves on SYNFLOOD attack on multiqueue device
(ixgbe), I found that SYNACK messages were dropped at Qdisc level
because we send them all on a single queue.
Obvious choice is to reflect incoming SYN packet @queue_mapping to
SYNACK packet.
Under stress, my machine could only send 25.000 SYNACK per second (for
200.000 incoming SYN per second). NIC : ixgbe with 16 rx/tx queues.
After patch, not a single SYNACK is dropped.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Hans Schillstrom <hans.schillstrom@ericsson.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/skbuff.c')
0 files changed, 0 insertions, 0 deletions