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| author | Julien Grall <julien.grall@citrix.com> | 2015-06-24 20:03:14 +0300 |
|---|---|---|
| committer | David Vrabel <david.vrabel@citrix.com> | 2015-10-23 16:20:32 +0300 |
| commit | a0f2e80fcd3b6b1369527828b02caab01af60c36 (patch) | |
| tree | 5fef15dd8d48a9ff3a41638a3277c3a2e668ae64 /drivers/net/xen-netback | |
| parent | 4a69c909deb0dd3cae653d14ac0ff52d5440a19c (diff) | |
| download | linux-a0f2e80fcd3b6b1369527828b02caab01af60c36.tar.xz | |
net/xen-netback: xenvif_gop_frag_copy: move GSO check out of the loop
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.grall@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'drivers/net/xen-netback')
| -rw-r--r-- | drivers/net/xen-netback/netback.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index ec98d43916a8..c4e6c025d64d 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -288,6 +288,13 @@ 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)); @@ -347,13 +354,6 @@ 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++; |