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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-10-30 18:39:02 (GMT) |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-10-30 18:39:02 (GMT) |
| commit | 31271e9aacaa3c3460cbad8ec62fb5a04a522f5b (patch) | |
| tree | 815c671dac14e0e07959dc88e94c36a994f9c460 /net/ipv4/tcp_input.c | |
| parent | 32111abb508424d1d110fa471d940160abe251f5 (diff) | |
| parent | dc4dc36056392c0b0b1ca9e81bebff964b9297e0 (diff) | |
| download | linux-31271e9aacaa3c3460cbad8ec62fb5a04a522f5b.tar.xz | |
Merge branch 'spi-tegra' into spi-next
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -rw-r--r-- | net/ipv4/tcp_input.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 432c366..1db6639 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -5646,6 +5646,7 @@ static bool tcp_rcv_fastopen_synack(struct sock *sk, struct sk_buff *synack, tcp_rearm_rto(sk); return true; } + tp->syn_data_acked = tp->syn_data; return false; } @@ -5963,7 +5964,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb, req = tp->fastopen_rsk; if (req != NULL) { - BUG_ON(sk->sk_state != TCP_SYN_RECV && + WARN_ON_ONCE(sk->sk_state != TCP_SYN_RECV && sk->sk_state != TCP_FIN_WAIT1); if (tcp_check_req(sk, skb, req, NULL, true) == NULL) @@ -6052,7 +6053,15 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb, * ACK we have received, this would have acknowledged * our SYNACK so stop the SYNACK timer. */ - if (acceptable && req != NULL) { + if (req != NULL) { + /* Return RST if ack_seq is invalid. + * Note that RFC793 only says to generate a + * DUPACK for it but for TCP Fast Open it seems + * better to treat this case like TCP_SYN_RECV + * above. + */ + if (!acceptable) + return 1; /* We no longer need the request sock. */ reqsk_fastopen_remove(sk, req, false); tcp_rearm_rto(sk); |