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netfilter: flowtable: fix missing FLOWI_FLAG_ANYSRC flag

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The nf_flow_table gets route through ip_route_output_key. If the saddr
is not local one, then FLOWI_FLAG_ANYSRC flag should be set. Without
this flag, the route lookup for other_dst will fail.

Fixes: 3412e16418 (netfilter: flowtable: nft_flow_route use more data for reverse route)
Signed-off-by: wenxu <wenxu@chinatelecom.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
wenxu 2022-05-25 21:25:45 -04:00 committed by Pablo Neira Ayuso
parent f9a43007d3
commit f1896d45fe
1 changed files with 2 additions and 0 deletions
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2
net/netfilter/nft_flow_offload.c
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@ -237,6 +237,7 @@ static int nft_flow_route(const struct nft_pktinfo *pkt,
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;
fl.u.ip4.flowi4_flags = FLOWI_FLAG_ANYSRC;
break;
case NFPROTO_IPV6:
fl.u.ip6.daddr = ct->tuplehash[dir].tuple.src.u3.in6;
@ -245,6 +246,7 @@ static int nft_flow_route(const struct nft_pktinfo *pkt,
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;
fl.u.ip6.flowi6_flags = FLOWI_FLAG_ANYSRC;
break;
}