This fixes issues with TCP FastOpen vs lockless listeners,
and SYNACK being attached to request sockets.
Then, last patch brings performance improvement for
syncookies generation and validation.
Tested under a 4.3 Mpps SYNFLOOD attack, new perf profile looks
like :
12.11% [kernel] [k] sha_transform
5.83% [kernel] [k] tcp_conn_request
4.59% [kernel] [k] __inet_lookup_listener
4.11% [kernel] [k] ipt_do_table
3.91% [kernel] [k] tcp_make_synack
3.05% [kernel] [k] fib_table_lookup
2.74% [kernel] [k] sock_wfree
2.66% [kernel] [k] memcpy_erms
2.12% [kernel] [k] tcp_v4_rcv
Eric Dumazet (5):
tcp: fix fastopen races vs lockless listener
inet: ip_skb_dst_mtu() should use sk_fullsock()
ipv6: inet6_sk() should use sk_fullsock()
net: use sk_fullsock() in __netdev_pick_tx()
tcp: avoid two atomic ops for syncookies
include/linux/ipv6.h | 4 ++--
include/net/inet_sock.h | 3 ++-
include/net/ip.h | 9 ++++++---
include/net/request_sock.h | 12 +++++++++---
net/core/dev.c | 1 +
net/dccp/ipv4.c | 2 +-
net/dccp/ipv6.c | 2 +-
net/ipv4/syncookies.c | 2 +-
net/ipv4/tcp_fastopen.c | 26 +++++++-------------------
net/ipv4/tcp_input.c | 14 ++++++++++----
net/ipv6/syncookies.c | 2 +-
11 files changed, 41 insertions(+), 36 deletions(-)
--
2.6.0.rc2.230.g3dd15c0
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