From b3899830aa47333fa73e7f23eddc856003fd8bda Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Thu, 5 Sep 2024 19:51:31 +0300 Subject: [PATCH] bpf: lwtunnel: Unmask upper DSCP bits in bpf_lwt_xmit_reroute() Unmask the upper DSCP bits when calling ip_route_output_key() so that in the future it could perform the FIB lookup according to the full DSCP value. Signed-off-by: Ido Schimmel Reviewed-by: Guillaume Nault Signed-off-by: David S. Miller --- net/core/lwt_bpf.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/core/lwt_bpf.c b/net/core/lwt_bpf.c index afb05f58b64c..1a14f915b7a4 100644 --- a/net/core/lwt_bpf.c +++ b/net/core/lwt_bpf.c @@ -12,6 +12,7 @@ #include #include #include +#include struct bpf_lwt_prog { struct bpf_prog *prog; @@ -205,7 +206,7 @@ static int bpf_lwt_xmit_reroute(struct sk_buff *skb) fl4.flowi4_oif = oif; fl4.flowi4_mark = skb->mark; fl4.flowi4_uid = sock_net_uid(net, sk); - fl4.flowi4_tos = RT_TOS(iph->tos); + fl4.flowi4_tos = iph->tos & INET_DSCP_MASK; fl4.flowi4_flags = FLOWI_FLAG_ANYSRC; fl4.flowi4_proto = iph->protocol; fl4.daddr = iph->daddr; -- 2.25.1