From df9131c7fafdc0d4c85686f5c7711a4dd4f3ae60 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 21 Aug 2024 15:52:47 +0300 Subject: [PATCH] ipv4: Unmask upper DSCP bits in input route lookup Unmask the upper DSCP bits in input route lookup so that in the future the lookup could be performed according to the full DSCP value. No functional changes intended since the upper DSCP bits are masked when comparing against the TOS selectors in FIB rules and routes. Signed-off-by: Ido Schimmel Reviewed-by: Guillaume Nault Acked-by: Florian Westphal Reviewed-by: David Ahern Link: https://patch.msgid.link/20240821125251.1571445-9-idosch@nvidia.com Signed-off-by: Jakub Kicinski --- net/ipv4/route.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 9b6528b7b562..73bb61162445 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2470,7 +2470,7 @@ int ip_route_input_noref(struct sk_buff *skb, __be32 daddr, __be32 saddr, struct fib_result res; int err; - tos &= IPTOS_RT_MASK; + tos &= INET_DSCP_MASK; rcu_read_lock(); err = ip_route_input_rcu(skb, daddr, saddr, tos, dev, &res); rcu_read_unlock(); -- 2.25.1