Commit 345663e6 authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

netfilter: nf_dup4: Unmask upper DSCP bits in nf_dup_ipv4_route() 



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: default avatarIdo Schimmel <idosch@nvidia.com>
Reviewed-by: default avatarGuillaume Nault <gnault@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b7172768

net/ipv4/netfilter/nf_dup_ipv4.c

+2 −1
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <net/icmp.h>

#include <net/ip.h>

#include <net/route.h>

#include <net/inet_dscp.h>

#include <net/netfilter/ipv4/nf_dup_ipv4.h>

#if IS_ENABLED(CONFIG_NF_CONNTRACK)

#include <net/netfilter/nf_conntrack.h>
@@ -32,7 +33,7 @@ static bool nf_dup_ipv4_route(struct net *net, struct sk_buff *skb, 
		fl4.flowi4_oif = oif;



	fl4.daddr = gw->s_addr;

	fl4.flowi4_tos = RT_TOS(iph->tos);

	fl4.flowi4_tos = iph->tos & INET_DSCP_MASK;

	fl4.flowi4_scope = RT_SCOPE_UNIVERSE;

	fl4.flowi4_flags = FLOWI_FLAG_KNOWN_NH;

	rt = ip_route_output_key(net, &fl4);