diff options
| author | Eric Dumazet <edumazet@google.com> | 2017-06-07 10:34:37 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-08 10:53:28 -0400 |
| commit | f930103421f6579719b8252285c94c1195f6e032 (patch) | |
| tree | cb94c6b7a228ffa51760fbdd18c8d321402efe11 /net/ipv4/syncookies.c | |
| parent | eed29f17f09ad7f400bc245f209acad6a8214fac (diff) | |
| download | lwn-f930103421f6579719b8252285c94c1195f6e032.tar.gz lwn-f930103421f6579719b8252285c94c1195f6e032.zip | |
tcp: Namespaceify sysctl_tcp_sack
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/syncookies.c')
| -rw-r--r-- | net/ipv4/syncookies.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c index 6a32cb381877..b386e8592ffd 100644 --- a/net/ipv4/syncookies.c +++ b/net/ipv4/syncookies.c @@ -232,7 +232,8 @@ EXPORT_SYMBOL(tcp_get_cookie_sock); * return false if we decode a tcp option that is disabled * on the host. */ -bool cookie_timestamp_decode(struct tcp_options_received *tcp_opt) +bool cookie_timestamp_decode(const struct net *net, + struct tcp_options_received *tcp_opt) { /* echoed timestamp, lowest bits contain options */ u32 options = tcp_opt->rcv_tsecr; @@ -247,7 +248,7 @@ bool cookie_timestamp_decode(struct tcp_options_received *tcp_opt) tcp_opt->sack_ok = (options & TS_OPT_SACK) ? TCP_SACK_SEEN : 0; - if (tcp_opt->sack_ok && !sysctl_tcp_sack) + if (tcp_opt->sack_ok && !net->ipv4.sysctl_tcp_sack) return false; if ((options & TS_OPT_WSCALE_MASK) == TS_OPT_WSCALE_MASK) @@ -319,7 +320,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb) tcp_opt.rcv_tsecr -= tsoff; } - if (!cookie_timestamp_decode(&tcp_opt)) + if (!cookie_timestamp_decode(sock_net(sk), &tcp_opt)) goto out; ret = NULL; |