When creating a flow table entry, the reverse route is looked
up based on the current packet.
There can be scenarios where the user creates a custom ip rule
to route the traffic differently.
In order to support those scenarios, the lookup needs to add
more information based on the current packet.
The patch adds multiple new information to the route lookup.
Signed-off-by: Sven Auhagen <sven.auhagen@xxxxxxxxxxxx>
diff --git a/net/netfilter/nft_flow_offload.c b/net/netfilter/nft_flow_offload.c
index 0af34ad41479..34116a6cb72b 100644
--- a/net/netfilter/nft_flow_offload.c
+++ b/net/netfilter/nft_flow_offload.c
@@ -227,11 +227,19 @@ static int nft_flow_route(const struct nft_pktinfo *pkt,
switch (nft_pf(pkt)) {
case NFPROTO_IPV4:
fl.u.ip4.daddr = ct->tuplehash[dir].tuple.src.u3.ip;
+ fl.u.ip4.saddr = ct->tuplehash[dir].tuple.dst.u3.ip;
fl.u.ip4.flowi4_oif = nft_in(pkt)->ifindex;
+ fl.u.ip4.flowi4_iif = this_dst->dev->ifindex;
+ fl.u.ip4.flowi4_tos = RT_TOS(ip_hdr(pkt->skb)->tos);
+ fl.u.ip4.flowi4_mark = pkt->skb->mark;
break;
case NFPROTO_IPV6:
fl.u.ip6.daddr = ct->tuplehash[dir].tuple.src.u3.in6;
+ fl.u.ip6.saddr = ct->tuplehash[dir].tuple.dst.u3.in6;
fl.u.ip6.flowi6_oif = nft_in(pkt)->ifindex;
+ fl.u.ip6.flowi6_iif = this_dst->dev->ifindex;
+ fl.u.ip6.flowlabel = ip6_flowinfo(ipv6_hdr(pkt->skb));
+ fl.u.ip6.flowi6_mark = pkt->skb->mark;
break;
}
--
2.33.1
