[PATCH 4/4] netfilter: nf_flow_table: reload iph in nf_flow_tuple_ip
From: Haishuang Yan <hidden>
Date: 2020-03-15 14:16:21
Also in:
lkml, netfilter-devel
Subsystem:
netfilter, networking [general], the rest · Maintainers:
Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Since pskb_may_pull may change skb->data, so we need to reload iph at
the right place.
Fixes: 7d2086871762 ("netfilter: nf_flow_table: move ipv4 offload hook
code to nf_flow_table")
Signed-off-by: Haishuang Yan <redacted>
---
net/netfilter/nf_flow_table_ip.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c
index 954737f..610c60a 100644
--- a/net/netfilter/nf_flow_table_ip.c
+++ b/net/netfilter/nf_flow_table_ip.c@@ -190,6 +190,7 @@ static int nf_flow_tuple_ip(struct sk_buff *skb, const struct net_device *dev, if (!pskb_may_pull(skb, thoff + sizeof(*ports))) return -1; + iph = ip_hdr(skb); ports = (struct flow_ports *)(skb_network_header(skb) + thoff); tuple->src_v4.s_addr = iph->saddr;
--
1.8.3.1