diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/af_inet.c | 2 | ||||
| -rw-r--r-- | net/ipv4/ip_sockglue.c | 11 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 7 | ||||
| -rw-r--r-- | net/ipv4/tcp_fastopen.c | 2 |
4 files changed, 17 insertions, 5 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index cc858ef44451..9532ee87151f 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -228,6 +228,8 @@ int inet_listen(struct socket *sock, int backlog) err = 0; if (err) goto out; + + tcp_fastopen_init_key_once(true); } err = inet_csk_listen_start(sk, backlog); if (err) diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 04ae2992a5cd..c3c359ad66e3 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -432,6 +432,15 @@ void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 port, u32 inf kfree_skb(skb); } +/* For some errors we have valid addr_offset even with zero payload and + * zero port. Also, addr_offset should be supported if port is set. + */ +static inline bool ipv4_datagram_support_addr(struct sock_exterr_skb *serr) +{ + return serr->ee.ee_origin == SO_EE_ORIGIN_ICMP || + serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL || serr->port; +} + /* IPv4 supports cmsg on all imcp errors and some timestamps * * Timestamp code paths do not initialize the fields expected by cmsg: @@ -498,7 +507,7 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) serr = SKB_EXT_ERR(skb); - if (sin && serr->port) { + if (sin && ipv4_datagram_support_addr(serr)) { sin->sin_family = AF_INET; sin->sin_addr.s_addr = *(__be32 *)(skb_network_header(skb) + serr->addr_offset); diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 697b86dd45b3..7f4056785acc 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2573,10 +2573,13 @@ static int do_tcp_setsockopt(struct sock *sk, int level, case TCP_FASTOPEN: if (val >= 0 && ((1 << sk->sk_state) & (TCPF_CLOSE | - TCPF_LISTEN))) + TCPF_LISTEN))) { + tcp_fastopen_init_key_once(true); + err = fastopen_init_queue(sk, val); - else + } else { err = -EINVAL; + } break; case TCP_TIMESTAMP: if (!tp->repair) diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c index 46b087a27503..f9c0fb84e435 100644 --- a/net/ipv4/tcp_fastopen.c +++ b/net/ipv4/tcp_fastopen.c @@ -78,8 +78,6 @@ static bool __tcp_fastopen_cookie_gen(const void *path, struct tcp_fastopen_context *ctx; bool ok = false; - tcp_fastopen_init_key_once(true); - rcu_read_lock(); ctx = rcu_dereference(tcp_fastopen_ctx); if (ctx) { |