diff options
Diffstat (limited to 'net/ipv4/syncookies.c')
| -rw-r--r-- | net/ipv4/syncookies.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c index 0681d3e82b11..98b25e5d147b 100644 --- a/net/ipv4/syncookies.c +++ b/net/ipv4/syncookies.c @@ -344,6 +344,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb) __u8 rcv_wscale; struct flowi4 fl4; u32 tsoff = 0; + int l3index; if (!READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_syncookies) || !th->ack || th->rst) @@ -400,13 +401,14 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb) treq->snt_synack = 0; treq->tfo_listener = false; - tcp_ao_syncookie(sk, skb, treq, AF_INET); - if (IS_ENABLED(CONFIG_SMC)) ireq->smc_ok = 0; ireq->ir_iif = inet_request_bound_dev_if(sk, skb); + l3index = l3mdev_master_ifindex_by_index(sock_net(sk), ireq->ir_iif); + tcp_ao_syncookie(sk, skb, treq, AF_INET, l3index); + /* We throwed the options of the initial SYN away, so we hope * the ACK carries the same options again (see RFC1122 4.2.3.8) */ |