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netfilter: br_netfilter: Unmask upper DSCP bits in br_nf_pre_routing_finish()

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Unmask upper DSCP bits when calling ip_route_output() so that in the
future it could perform the FIB lookup according to the full DSCP value.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2024-09-05 19:51:29 +03:00 committed by David S. Miller
parent 8f08854199
commit 1f23a1909d
1 changed files with 2 additions and 1 deletions
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3
net/bridge/br_netfilter_hooks.c
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@ -36,6 +36,7 @@
#include <net/route.h>
#include <net/netfilter/br_netfilter.h>
#include <net/netns/generic.h>
#include <net/inet_dscp.h>
#include <linux/uaccess.h>
#include "br_private.h"
@ -402,7 +403,7 @@ static int br_nf_pre_routing_finish(struct net *net, struct sock *sk, struct sk_
goto free_skb;
rt = ip_route_output(net, iph->daddr, 0,
RT_TOS(iph->tos), 0,
iph->tos & INET_DSCP_MASK, 0,
RT_SCOPE_UNIVERSE);
if (!IS_ERR(rt)) {
/* - Bridged-and-DNAT'ed traffic doesn't