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author | Haishuang Yan <yanhaishuang@cmss.chinamobile.com> | 2017-09-27 11:35:42 +0800 |
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committer | David S. Miller <davem@davemloft.net> | 2017-10-01 17:55:54 -0700 |
commit | 437138485656c41e32b8c63c0987cfa0348be0e6 (patch) | |
tree | 942ae784a68f7d351f62fd3ac48c1330d629ce31 /net/ipv4/af_inet.c | |
parent | dd000598a39b6937fcefdf143720ec9fb5250e72 (diff) | |
download | linux-stable-437138485656c41e32b8c63c0987cfa0348be0e6.tar.gz linux-stable-437138485656c41e32b8c63c0987cfa0348be0e6.tar.bz2 linux-stable-437138485656c41e32b8c63c0987cfa0348be0e6.zip |
ipv4: Namespaceify tcp_fastopen_key knob
Different namespace application might require different tcp_fastopen_key
independently of the host.
David Miller pointed out there is a leak without releasing the context
of tcp_fastopen_key during netns teardown. So add the release action in
exit_batch path.
Tested:
1. Container namespace:
# cat /proc/sys/net/ipv4/tcp_fastopen_key:
2817fff2-f803cf97-eadfd1f3-78c0992b
cookie key in tcp syn packets:
Fast Open Cookie
Kind: TCP Fast Open Cookie (34)
Length: 10
Fast Open Cookie: 1e5dd82a8c492ca9
2. Host:
# cat /proc/sys/net/ipv4/tcp_fastopen_key:
107d7c5f-68eb2ac7-02fb06e6-ed341702
cookie key in tcp syn packets:
Fast Open Cookie
Kind: TCP Fast Open Cookie (34)
Length: 10
Fast Open Cookie: e213c02bf0afbc8a
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/af_inet.c')
-rw-r--r-- | net/ipv4/af_inet.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index e73ce79d7176..43a1bbed7a42 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -222,7 +222,7 @@ int inet_listen(struct socket *sock, int backlog) (tcp_fastopen & TFO_SERVER_ENABLE) && !inet_csk(sk)->icsk_accept_queue.fastopenq.max_qlen) { fastopen_queue_tune(sk, backlog); - tcp_fastopen_init_key_once(); + tcp_fastopen_init_key_once(sock_net(sk)); } err = inet_csk_listen_start(sk, backlog); |