Commit df9131c7 authored by Ido Schimmel's avatar Ido Schimmel Committed by Jakub Kicinski
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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: default avatarIdo Schimmel <idosch@nvidia.com>
Reviewed-by: default avatarGuillaume Nault <gnault@redhat.com>
Acked-by: default avatarFlorian Westphal <fw@strlen.de>
Reviewed-by: default avatarDavid Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20240821125251.1571445-9-idosch@nvidia.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 39d3628f

net/ipv4/route.c

+1 −1
Original line number Diff line number Diff line
@@ -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();