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net: tcp2: Handle FIN_WAIT_2 and CLOSING

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Added support for FIN_WAIT_2 and CLOSING states.

Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
This commit is contained in:
Ravi kumar Veeramally 2020-04-19 18:16:18 +03:00 • committed by Jukka Rissanen
commit 184a2d5197
1 changed files with 21 additions and 2 deletions
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23
subsys/net/ip/tcp2.c
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@ -942,14 +942,33 @@ next_state:
conn_ack(conn, + 1);
tcp_out(conn, ACK);
next = TCP_TIME_WAIT;
} else if (th && FL(&fl, ==, FIN, th_seq(th) == conn->ack)) {
tcp_send_timer_cancel(conn);
conn_ack(conn, + 1);
tcp_out(conn, ACK);
next = TCP_CLOSING;
} else if (th && FL(&fl, ==, ACK, th_seq(th) == conn->ack)) {
tcp_send_timer_cancel(conn);
next = TCP_FIN_WAIT_2;
}
break;
case TCP_FIN_WAIT_2:
if (th && FL(&fl, ==, FIN, th_seq(th) == conn->ack)) {
conn_ack(conn, + 1);
tcp_out(conn, ACK);
next = TCP_TIME_WAIT;
}
break;
case TCP_CLOSING:
if (th && FL(&fl, ==, ACK, th_seq(th) == conn->ack)) {
tcp_send_timer_cancel(conn);
next = TCP_TIME_WAIT;
}
break;
case TCP_TIME_WAIT:
k_delayed_work_submit(&conn->timewait_timer,
K_MSEC(CONFIG_NET_TCP_TIME_WAIT_DELAY));
break;
case TCP_FIN_WAIT_2:
case TCP_CLOSING:
default:
NET_ASSERT(false, "%s is unimplemented",
tcp_state_to_str(conn->state, true));