From f6c0f5d209fa80eb808e08aa4206f6e264041ef6 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 24 Sep 2019 08:01:16 -0700 Subject: tcp: honor SO_PRIORITY in TIME_WAIT state ctl packets sent on behalf of TIME_WAIT sockets currently have a zero skb->priority, which can cause various problems. In this patch we : - add a tw_priority field in struct inet_timewait_sock. - populate it from sk->sk_priority when a TIME_WAIT is created. - For IPv4, change ip_send_unicast_reply() and its two callers to propagate tw_priority correctly. ip_send_unicast_reply() no longer changes sk->sk_priority. - For IPv6, make sure TIME_WAIT sockets pass their tw_priority field to tcp_v6_send_response() and tcp_v6_send_ack(). Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/inet_timewait_sock.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net/inet_timewait_sock.h') diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h index aef38c140014..dfd919b3119e 100644 --- a/include/net/inet_timewait_sock.h +++ b/include/net/inet_timewait_sock.h @@ -71,6 +71,7 @@ struct inet_timewait_sock { tw_pad : 2, /* 2 bits hole */ tw_tos : 8; u32 tw_txhash; + u32 tw_priority; struct timer_list tw_timer; struct inet_bind_bucket *tw_tb; }; -- cgit v1.2.3-59-g8ed1b