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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-05 08:13:24 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-05 08:13:24 +0200
commit9c2edd8b5bcb36ec6c890dd85f8fd13034aaa43e (patch)
tree052b3c229e00462cd0c5773c8b6b9fe314e86f38 /net/ipv6/tcp_ipv6.c
parentaa652b1ccbd0d3a9cd4ecdec6d36935f78c838da (diff)
parentc6935931c1894ff857616ff8549b61236a19148f (diff)
downloadlinux-9c2edd8b5bcb36ec6c890dd85f8fd13034aaa43e.tar.gz
Merge 4.8-rc5 into staging-next
We want the staging fixes in here as well to handle merge issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
-rw-r--r--net/ipv6/tcp_ipv6.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 33df8b8575cc..94f4f89d73e7 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -944,9 +944,15 @@ static void tcp_v6_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
 	/* sk->sk_state == TCP_LISTEN -> for regular TCP_SYN_RECV
 	 * sk->sk_state == TCP_SYN_RECV -> for Fast Open.
 	 */
+	/* RFC 7323 2.3
+	 * The window field (SEG.WND) of every outgoing segment, with the
+	 * exception of <SYN> segments, MUST be right-shifted by
+	 * Rcv.Wind.Shift bits:
+	 */
 	tcp_v6_send_ack(sk, skb, (sk->sk_state == TCP_LISTEN) ?
 			tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt,
-			tcp_rsk(req)->rcv_nxt, req->rsk_rcv_wnd,
+			tcp_rsk(req)->rcv_nxt,
+			req->rsk_rcv_wnd >> inet_rsk(req)->rcv_wscale,
 			tcp_time_stamp, req->ts_recent, sk->sk_bound_dev_if,
 			tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr),
 			0, 0);