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tcp: allow data in passive open ack (VPP-1545)

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Change-Id: Iceb99d3f8b7029bd1b1e9ebafb1e0b3790c573e4
Signed-off-by: Florin Coras <fcoras@cisco.com>
(cherry picked from commit 865872ebdb2bbaf3f157e2a9889405b84114d2eb)
This commit is contained in:
Florin Coras
2019-01-18 12:12:29 -08:00
committed by Florin Coras
parent 48872780e8
commit cbb4565c88
1 changed files with 3 additions and 2 deletions
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5
src/vnet/tcp/tcp_input.c
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@ -359,6 +359,7 @@ tcp_segment_validate (tcp_worker_ctx_t * wrk, tcp_connection_t * tc0,
/* 4th: check the SYN bit */
if (PREDICT_FALSE (tcp_syn (th0)))
{
*error0 = tcp_ack (th0) ? TCP_ERROR_SYN_ACKS_RCVD : TCP_ERROR_SYNS_RCVD;
/* TODO implement RFC 5961 */
if (tc0->state == TCP_STATE_SYN_RCVD)
{
@ -2712,8 +2713,7 @@ tcp46_rcv_process_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
}
/* Make sure the ack is exactly right */
if (tc0->rcv_nxt != vnet_buffer (b0)->tcp.seq_number || is_fin0
|| vnet_buffer (b0)->tcp.data_len)
if (tc0->rcv_nxt != vnet_buffer (b0)->tcp.seq_number || is_fin0)
{
tcp_connection_reset (tc0);
error0 = TCP_ERROR_SEGMENT_INVALID;
@ -3144,6 +3144,7 @@ tcp46_listen_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
child0->snd_wl2 = vnet_buffer (b0)->tcp.ack_number;
tcp_connection_init_vars (child0);
child0->rto = TCP_RTO_MIN;
TCP_EVT_DBG (TCP_EVT_SYN_RCVD, child0, 1);
if (stream_session_accept (&child0->connection, lc0->c_s_index,