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tcp: accept fin-ack in syn-rcvd state

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Change-Id: Ibe57abc7d2a06be80146ce28edf4c60ecda991eb
Signed-off-by: Florin Coras <fcoras@cisco.com>
This commit is contained in:
Florin Coras
2018-09-20 18:36:54 -07:00
committed by Marco Varlese
parent 877ad144b6
commit c01c4451c5
1 changed files with 3 additions and 1 deletions
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4
src/vnet/tcp/tcp_input.c
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@ -2735,10 +2735,10 @@ tcp46_rcv_process_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
case TCP_STATE_SYN_RCVD:
/* Send FIN-ACK notify app and enter CLOSE-WAIT */
tcp_connection_timers_reset (tc0);
tcp_retransmit_timer_set (tc0);
tcp_make_fin (tc0, b0);
tc0->snd_nxt += 1;
tc0->snd_una_max = tc0->snd_nxt;
tcp_retransmit_timer_set (tc0);
next0 = tcp_next_output (tc0->c_is_ip4);
stream_session_disconnect_notify (&tc0->connection);
tc0->state = TCP_STATE_CLOSE_WAIT;
@ -3442,6 +3442,8 @@ do { \
_(SYN_RCVD, TCP_FLAG_ACK, TCP_INPUT_NEXT_RCV_PROCESS, TCP_ERROR_NONE);
_(SYN_RCVD, TCP_FLAG_RST, TCP_INPUT_NEXT_RCV_PROCESS, TCP_ERROR_NONE);
_(SYN_RCVD, TCP_FLAG_SYN, TCP_INPUT_NEXT_RCV_PROCESS, TCP_ERROR_NONE);
_(SYN_RCVD, TCP_FLAG_FIN | TCP_FLAG_ACK, TCP_INPUT_NEXT_RCV_PROCESS,
TCP_ERROR_NONE);
/* SYN-ACK for a SYN */
_(SYN_SENT, TCP_FLAG_SYN | TCP_FLAG_ACK, TCP_INPUT_NEXT_SYN_SENT,
TCP_ERROR_NONE);