tree 8c39812fc6fc8133cc28944e38b44c941d8fa3ce
parent 7eebb0b28f755e297d355a205bb04945b256db6b
author Florian Westphal <fw@strlen.de> 1240134228 +0000
committer David S. Miller <davem@davemloft.net> 1240219526 -0700

syncookies: remove last_synq_overflow from struct tcp_sock

last_synq_overflow eats 4 or 8 bytes in struct tcp_sock, even
though it is only used when a listening sockets syn queue
is full.

We can (ab)use rx_opt.ts_recent_stamp to store the same information;
it is not used otherwise as long as a socket is in listen state.

Move linger2 around to avoid splitting struct mtu_probe
across cacheline boundary on 32 bit arches.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>