netdev - [PATCH v8 3/3] geneve: add IPv6 bits to geneve_fill_metadata

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Date:	Tue, 27 Oct 2015 09:49:00 -0400
From:	"John W. Linville" <linville@...driver.com>
To:	netdev@...r.kernel.org
Cc:	Dave Miller <davem@...emloft.net>,
	Pravin B Shelar <pshelar@...ira.com>,
	Jesse Gross <jesse@...ira.com>, Jiri Benc <jbenc@...hat.com>,
	YOSHIFUJI Hideaki/吉藤英明 
	<hideaki.yoshifuji@...aclelinux.com>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	"John W. Linville" <linville@...driver.com>
Subject: [PATCH v8 3/3] geneve: add IPv6 bits to geneve_fill_metadata_dst

Signed-off-by: John W. Linville <linville@...driver.com>
---
v7 -- initial version (numbered to match earlier patches in series)
v8 -- fixup of bracing on an "else { return -EINVAL; }"

 drivers/net/geneve.c | 29 ++++++++++++++++++++++-------
 1 file changed, 22 insertions(+), 7 deletions(-)

diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 44e724508c55..de5c30c9f059 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -1006,16 +1006,31 @@ static int geneve_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb)
 	struct geneve_dev *geneve = netdev_priv(dev);
 	struct rtable *rt;
 	struct flowi4 fl4;
+#if IS_ENABLED(CONFIG_IPV6)
+	struct dst_entry *dst;
+	struct flowi6 fl6;
+#endif
 
-	if (ip_tunnel_info_af(info) != AF_INET)
-		return -EINVAL;
+	if (ip_tunnel_info_af(info) == AF_INET) {
+		rt = geneve_get_v4_rt(skb, dev, &fl4, info);
+		if (IS_ERR(rt))
+			return PTR_ERR(rt);
 
-	rt = geneve_get_v4_rt(skb, dev, &fl4, info);
-	if (IS_ERR(rt))
-		return PTR_ERR(rt);
+		ip_rt_put(rt);
+		info->key.u.ipv4.src = fl4.saddr;
+#if IS_ENABLED(CONFIG_IPV6)
+	} else if (ip_tunnel_info_af(info) == AF_INET6) {
+		dst = geneve_get_v6_dst(skb, dev, &fl6, info);
+		if (IS_ERR(dst))
+			return PTR_ERR(dst);
+
+		dst_release(dst);
+		info->key.u.ipv6.src = fl6.saddr;
+#endif
+	} else {
+		return -EINVAL;
+	}
 
-	ip_rt_put(rt);
-	info->key.u.ipv4.src = fl4.saddr;
 	info->key.tp_src = udp_flow_src_port(geneve->net, skb,
 					     1, USHRT_MAX, true);
 	info->key.tp_dst = geneve->dst_port;
-- 
2.4.3

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