From mboxrd@z Thu Jan 1 00:00:00 1970 From: julien.grall@citrix.com (Julien Grall) Date: Wed, 30 Sep 2015 11:45:16 +0100 Subject: [PATCH v5 01/22] net/xen-netback: xenvif_gop_frag_copy: move GSO check out of the loop In-Reply-To: <1443609937-25278-1-git-send-email-julien.grall@citrix.com> References: <1443609937-25278-1-git-send-email-julien.grall@citrix.com> Message-ID: <1443609937-25278-2-git-send-email-julien.grall@citrix.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Acked-by: Wei Liu --- Cc: Ian Campbell Cc: netdev at vger.kernel.org Changes in v4: - Add Wei's acked 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 ec98d43..c4e6c02 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<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