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Subject[PATCH 4/4] netfilter: nf_flow_table: reload iph in nf_flow_tuple_ip
Date
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 <yanhaishuang@cmss.chinamobile.com>
---
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


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