From 6a59526628ad6dadf389f45ddb3f75db44930897 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Thu, 29 Aug 2024 09:54:56 +0300 Subject: ipv6: sit: Unmask upper DSCP bits in ipip6_tunnel_xmit() The function calls flowi4_init_output() to initialize an IPv4 flow key with which it then performs a FIB lookup using ip_route_output_flow(). The 'tos' variable with which the TOS value in the IPv4 flow key (flowi4_tos) is initialized contains the full DS field. Unmask the upper DSCP bits so that in the future the FIB lookup could be performed according to the full DSCP value. Signed-off-by: Ido Schimmel Reviewed-by: Guillaume Nault Signed-off-by: David S. Miller --- net/ipv6/sit.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'net') diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 83b195f09561..3b2eed7fc765 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -51,6 +51,7 @@ #include #include #include +#include /* This version of net/ipv6/sit.c is cloned of net/ipv4/ip_gre.c @@ -935,8 +936,8 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb, } flowi4_init_output(&fl4, tunnel->parms.link, tunnel->fwmark, - RT_TOS(tos), RT_SCOPE_UNIVERSE, IPPROTO_IPV6, - 0, dst, tiph->saddr, 0, 0, + tos & INET_DSCP_MASK, RT_SCOPE_UNIVERSE, + IPPROTO_IPV6, 0, dst, tiph->saddr, 0, 0, sock_net_uid(tunnel->net, NULL)); rt = dst_cache_get_ip4(&tunnel->dst_cache, &fl4.saddr); -- cgit