From: Alexander Duyck <aduyck@mirantis.com>
Date: Fri, 5 Feb 2016 23:27:31 +0000 (-0800)
Subject: net: Drop unecessary enc_features variable from tunnel segmentation functions
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bef3c6c9374da40ec63698cd504474366a9de2ff;p=linux-beck.git

net: Drop unecessary enc_features variable from tunnel segmentation functions

The enc_features variable isn't necessary since features isn't used
anywhere after we create enc_features so instead just use a destructive AND
on features itself and save ourselves the variable declaration.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Acked-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
index 5a8ee3282550..02cb1a416c7d 100644
--- a/net/ipv4/gre_offload.c
+++ b/net/ipv4/gre_offload.c
@@ -19,7 +19,6 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
 				       netdev_features_t features)
 {
 	struct sk_buff *segs = ERR_PTR(-EINVAL);
-	netdev_features_t enc_features;
 	int ghl;
 	struct gre_base_hdr *greh;
 	u16 mac_offset = skb->mac_header;
@@ -68,9 +67,10 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
 	skb_set_network_header(skb, skb_inner_network_offset(skb));
 	skb->mac_len = skb_inner_network_offset(skb);
 
+	features &= skb->dev->hw_enc_features;
+
 	/* segment inner packet. */
-	enc_features = skb->dev->hw_enc_features & features;
-	segs = skb_mac_gso_segment(skb, enc_features);
+	segs = skb_mac_gso_segment(skb, features);
 	if (IS_ERR_OR_NULL(segs)) {
 		skb_gso_error_unwind(skb, protocol, ghl, mac_offset, mac_len);
 		goto out;
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index 4c519c1dc161..ce64c2b7ba55 100644
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c
@@ -37,7 +37,6 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb,
 	int mac_len = skb->mac_len;
 	int tnl_hlen = skb_inner_mac_header(skb) - skb_transport_header(skb);
 	__be16 protocol = skb->protocol;
-	netdev_features_t enc_features;
 	int udp_offset, outer_hlen;
 	unsigned int oldlen;
 	bool need_csum = !!(skb_shinfo(skb)->gso_type &
@@ -65,9 +64,10 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb,
 			   (skb->dev->features & (is_ipv6 ?
 			    NETIF_F_IPV6_CSUM : NETIF_F_IP_CSUM))));
 
+	features &= skb->dev->hw_enc_features;
+
 	/* segment inner packet. */
-	enc_features = skb->dev->hw_enc_features & features;
-	segs = gso_inner_segment(skb, enc_features);
+	segs = gso_inner_segment(skb, features);
 	if (IS_ERR_OR_NULL(segs)) {
 		skb_gso_error_unwind(skb, protocol, tnl_hlen, mac_offset,
 				     mac_len);