diff options
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index dca9ca2f1081..b6faee8a1e67 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3593,6 +3593,23 @@ int do_tcp_setsockopt(struct sock *sk, int level, int optname, __tcp_sock_set_quickack(sk, val); break; +#ifdef CONFIG_TCP_AO + case TCP_AO_ADD_KEY: + case TCP_AO_DEL_KEY: + case TCP_AO_INFO: { + /* If this is the first TCP-AO setsockopt() on the socket, + * sk_state has to be LISTEN or CLOSE + */ + if (((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE)) || + rcu_dereference_protected(tcp_sk(sk)->ao_info, + lockdep_sock_is_held(sk))) + err = tp->af_specific->ao_parse(sk, optname, optval, + optlen); + else + err = -EISCONN; + break; + } +#endif #ifdef CONFIG_TCP_MD5SIG case TCP_MD5SIG: case TCP_MD5SIG_EXT: |