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Commit 6bcdc40d authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

tcp: move rx_opt & syn_data_acked init to tcp_disconnect() 



If we make sure all listeners have these fields cleared, then a clone
will also inherit zero values.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 792c4354

net/ipv4/tcp.c

+4 −0
Original line number Diff line number Diff line
@@ -2617,6 +2617,10 @@ int tcp_disconnect(struct sock *sk, int flags) 
	tp->rack.last_delivered = 0;

	tp->rack.reo_wnd_persist = 0;

	tp->rack.dsack_seen = 0;

	tp->syn_data_acked = 0;

	tp->rx_opt.saw_tstamp = 0;

	tp->rx_opt.dsack = 0;

	tp->rx_opt.num_sacks = 0;





	/* Clean up fastopen related fields */

net/ipv4/tcp_minisocks.c

+0 −6
Original line number Diff line number Diff line
@@ -489,11 +489,6 @@ struct sock *tcp_create_openreq_child(const struct sock *sk, 
	tcp_init_xmit_timers(newsk);

	newtp->write_seq = newtp->pushed_seq = treq->snt_isn + 1;



	newtp->rx_opt.saw_tstamp = 0;



	newtp->rx_opt.dsack = 0;

	newtp->rx_opt.num_sacks = 0;



	if (sock_flag(newsk, SOCK_KEEPOPEN))

		inet_csk_reset_keepalive_timer(newsk,

					       keepalive_time_when(newtp));
@@ -534,7 +529,6 @@ struct sock *tcp_create_openreq_child(const struct sock *sk, 
	tcp_ecn_openreq_child(newtp, req);

	newtp->fastopen_req = NULL;

	newtp->fastopen_rsk = NULL;

	newtp->syn_data_acked = 0;



	__TCP_INC_STATS(sock_net(sk), TCP_MIB_PASSIVEOPENS);