From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Date: Wed, 2 Aug 2017 16:34:15 +0000 (-0700)
Subject: ipv4: Introduce ipip_offload_init helper function.
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=93b1b31f87ae7c0795afc7586d28f3ed4f859d20;p=openwrt%2Fstaging%2Fblogic.git

ipv4: Introduce ipip_offload_init helper function.

It's convenient to init ipip offload. We will check
the return value, and print KERN_CRIT info on failure.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index f0103ffe1cdb..683ffafb6ff9 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1765,6 +1765,11 @@ static const struct net_offload ipip_offload = {
 	},
 };
 
+static int __init ipip_offload_init(void)
+{
+	return inet_add_offload(&ipip_offload, IPPROTO_IPIP);
+}
+
 static int __init ipv4_offload_init(void)
 {
 	/*
@@ -1774,9 +1779,10 @@ static int __init ipv4_offload_init(void)
 		pr_crit("%s: Cannot add UDP protocol offload\n", __func__);
 	if (tcpv4_offload_init() < 0)
 		pr_crit("%s: Cannot add TCP protocol offload\n", __func__);
+	if (ipip_offload_init() < 0)
+		pr_crit("%s: Cannot add IPIP protocol offload\n", __func__);
 
 	dev_add_offload(&ip_packet_offload);
-	inet_add_offload(&ipip_offload, IPPROTO_IPIP);
 	return 0;
 }