The skb doesn't change within the function. Therefore it's only
necessary to check if we need GSO once at the beginning.

Signed-off-by: Julien Grall <julien.gr...@citrix.com>

---
Cc: Ian Campbell <ian.campb...@citrix.com>
Cc: Wei Liu <wei.l...@citrix.com>
Cc: net...@vger.kernel.org

    Changes in v2:
        - Patch added
---
 drivers/net/xen-netback/netback.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/net/xen-netback/netback.c 
b/drivers/net/xen-netback/netback.c
index 8293374..66f1780 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -277,6 +277,13 @@ static void xenvif_gop_frag_copy(struct xenvif_queue 
*queue, struct sk_buff *skb
        unsigned long bytes;
        int gso_type = XEN_NETIF_GSO_TYPE_NONE;
 
+       if (skb_is_gso(skb)) {
+               if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4)
+                       gso_type = XEN_NETIF_GSO_TYPE_TCPV4;
+               else if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6)
+                       gso_type = XEN_NETIF_GSO_TYPE_TCPV6;
+       }
+
        /* Data must not cross a page boundary. */
        BUG_ON(size + offset > PAGE_SIZE<<compound_order(page));
 
@@ -336,13 +343,6 @@ static void xenvif_gop_frag_copy(struct xenvif_queue 
*queue, struct sk_buff *skb
                }
 
                /* Leave a gap for the GSO descriptor. */
-               if (skb_is_gso(skb)) {
-                       if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4)
-                               gso_type = XEN_NETIF_GSO_TYPE_TCPV4;
-                       else if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6)
-                               gso_type = XEN_NETIF_GSO_TYPE_TCPV6;
-               }
-
                if (*head && ((1 << gso_type) & queue->vif->gso_mask))
                        queue->rx.req_cons++;
 
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Reply via email to