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(parent: 6ac705b) | patch
tcp: constify tcp_make_synack() socket argument
authorEric Dumazet <edumazet@google.com>
Fri, 25 Sep 2015 14:39:19 +0000 (07:39 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 25 Sep 2015 20:00:38 +0000 (13:00 -0700)
commit5d062de7f8ea1ca7c635957ff1144fba815ba34c
tree913926fe8c4d4d3594a4a8558aa3ac6feb80ded6tree | snapshot (tar.gz zip)
parent6ac705b1805863b1899e85f641bb265f9e6e9d99commit | diff
tcp: constify tcp_make_synack() socket argument

listener socket is not locked when tcp_make_synack() is called.

We better make sure no field is written.

There is one exception : Since SYNACK packets are attached to the listener
at this moment (or SYN_RECV child in case of Fast Open),
sock_wmalloc() needs to update sk->sk_wmem_alloc, but this is done using
atomic operations so this is safe.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/tcp.h diff | blob | blame | history
net/ipv4/tcp_output.c diff | blob | blame | history