diff mbox series

[4/4] netfilter: nf_flow_table: reload iph in nf_flow_tuple_ip

Message ID 1584281705-26228-4-git-send-email-yanhaishuang@cmss.chinamobile.com
State New
Headers show
Series None | expand

Commit Message

Haishuang Yan March 15, 2020, 2:15 p.m. UTC 
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 mbox series

Patch

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;