gro: New frags interface to avoid copying shinfo

It turns out that copying a 16-byte area at ~800k times a second
can be really expensive :) This patch redesigns the frags GRO
interface to avoid copying that area twice.

The two disciples of the frags interface have been converted.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 4 deletions

diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index e1ff5b14310e..7ff9af1d0f05 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -118,8 +118,7 @@ extern int vlan_hwaccel_do_receive(struct sk_buff *skb);
 extern int vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp,
                             unsigned int vlan_tci, struct sk_buff *skb);
 extern int vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp,
-                          unsigned int vlan_tci,
-                          struct napi_gro_fraginfo *info);
+                          unsigned int vlan_tci);
 
 #else
 static inline struct net_device *vlan_dev_real_dev(const struct net_device *dev)
@@ -154,8 +153,7 @@ static inline int vlan_gro_receive(struct napi_struct *napi,
 }
 
 static inline int vlan_gro_frags(struct napi_struct *napi,
-                                 struct vlan_group *grp, unsigned int vlan_tci,
-                                 struct napi_gro_fraginfo *info)
+                                 struct vlan_group *grp, unsigned int vlan_tci)
 {
         return NET_RX_DROP;
 }