diff options
author | Eric Dumazet <edumazet@google.com> | 2015-10-03 06:27:28 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2015-10-03 13:25:20 -0700 |
commit | e96f78ab2703f3b0d512f6b469bc685d2ef20475 (patch) | |
tree | c3401c3053c26288e2bfef14544d326e9db3dc0d /net/netfilter | |
parent | 4236e2a1ad679f3b57b23ba333f261b514814f4f (diff) |
tcp/dccp: add SLAB_DESTROY_BY_RCU flag for request sockets
Before letting request sockets being put in TCP/DCCP regular
ehash table, we need to add either :
- SLAB_DESTROY_BY_RCU flag to their kmem_cache
- add RCU grace period before freeing them.
Since we carefully respected the SLAB_DESTROY_BY_RCU protocol
like ESTABLISH and TIMEWAIT sockets, use it here.
req_prot_init() being only used by TCP and DCCP, I did not add
a new slab_flags into their rsk_prot, but reuse prot->slab_flags
Since all reqsk_alloc() users are correctly dealing with a failure,
add the __GFP_NOWARN flag to avoid traces under pressure.
Fixes: 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter')
0 files changed, 0 insertions, 0 deletions