ipv6: tcp: fix TCLASS value in ACK messages sent from TIME_WAIT

commit 66b13d99d96a (ipv4: tcp: fix TOS value in ACK messages sent from
TIME_WAIT) fixed IPv4 only.

This part is for the IPv6 side, adding a tclass param to ip6_xmit()

We alias tw_tclass and tw_tos, if socket family is INET6.

[ if sockets is ipv4-mapped, only IP_TOS socket option is used to fill
TOS field, TCLASS is not taken into account ]

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 85a2fbebd7e..66363b689ad 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -345,6 +345,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
                         tw6 = inet6_twsk((struct sock *)tw);
                         ipv6_addr_copy(&tw6->tw_v6_daddr, &np->daddr);
                         ipv6_addr_copy(&tw6->tw_v6_rcv_saddr, &np->rcv_saddr);
+                        tw->tw_tclass = np->tclass;
                         tw->tw_ipv6only = np->ipv6only;
                 }
 #endif