From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joe Stringer Subject: [PATCH net 5/5] qlcnic: Implement ndo_gso_check() Date: Tue, 4 Nov 2014 13:56:42 -0800 Message-ID: <1415138202-1197-6-git-send-email-joestringer@nicira.com> References: <1415138202-1197-1-git-send-email-joestringer@nicira.com> Cc: sathya.perla@emulex.com, jeffrey.t.kirsher@intel.com, linux.nics@intel.com, amirv@mellanox.com, shahed.shaikh@qlogic.com, Dept-GELinuxNICDev@qlogic.com, therbert@google.com, linux-kernel@vger.kernel.org To: netdev@vger.kernel.org Return-path: In-Reply-To: <1415138202-1197-1-git-send-email-joestringer@nicira.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org ndo_gso_check() was recently introduced to allow NICs to report the offloading support that they have on a per-skb basis. Add an implementation for this driver which checks for something that looks like VXLAN. Implementation shamelessly stolen from Tom Herbert: http://thread.gmane.org/gmane.linux.network/332428/focus=333111 Signed-off-by: Joe Stringer --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c index f5e29f7..6184f47 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c @@ -505,6 +505,17 @@ static void qlcnic_del_vxlan_port(struct net_device *netdev, } #endif +static bool qlcnic_gso_check(struct sk_buff *skb, struct net_device *dev) +{ + if ((skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL) && + (skb->inner_protocol_type != ENCAP_TYPE_ETHER || + skb->inner_protocol != htons(ETH_P_TEB) || + skb_inner_mac_header(skb) - skb_transport_header(skb) != 16)) + return false; + + return true; +} + static const struct net_device_ops qlcnic_netdev_ops = { .ndo_open = qlcnic_open, .ndo_stop = qlcnic_close, @@ -537,6 +548,7 @@ static const struct net_device_ops qlcnic_netdev_ops = { .ndo_set_vf_vlan = qlcnic_sriov_set_vf_vlan, .ndo_set_vf_spoofchk = qlcnic_sriov_set_vf_spoofchk, #endif + .ndo_gso_check = qlcnic_gso_check, }; static const struct net_device_ops qlcnic_netdev_failed_ops = { -- 1.7.10.4