From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Wang Subject: [PATCH net-next] macvlan: delay the header check for dodgy packets into lower device Date: Wed, 26 Nov 2014 17:21:14 +0800 Message-ID: <1416993674-11177-1-git-send-email-jasowang@redhat.com> Cc: mst@redhat.com, vyasevic@redhat.com, Jason Wang To: kaber@trash.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org We do header check twice for a dodgy packet. One is done before macvlan_start_xmit(), another is done before lower device's ndo_start_xmit(). The first one seems redundant so this patch tries to delay header check until a packet reaches its lower device (or macvtap) through always enabling NETIF_F_GSO_ROBUST for macvlan device. Cc: Patrick McHardy Signed-off-by: Jason Wang --- drivers/net/macvlan.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index bfb0b6e..11d4b35 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -742,11 +742,12 @@ static struct lock_class_key macvlan_netdev_xmit_lock_key; static struct lock_class_key macvlan_netdev_addr_lock_key; #define ALWAYS_ON_FEATURES \ - (NETIF_F_SG | NETIF_F_GEN_CSUM | NETIF_F_GSO_SOFTWARE | NETIF_F_LLTX) + (NETIF_F_SG | NETIF_F_GEN_CSUM | NETIF_F_GSO_SOFTWARE | NETIF_F_LLTX | \ + NETIF_F_GSO_ROBUST) #define MACVLAN_FEATURES \ (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ - NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ + NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | \ NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) -- 1.9.1