Messages in this thread | | | From | Shahed Shaikh <> | Subject | RE: [PATCH net 5/5] qlcnic: Implement ndo_gso_check() | Date | Wed, 5 Nov 2014 09:17:31 +0000 |
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> -----Original Message----- > From: Joe Stringer [mailto:joestringer@nicira.com] > Sent: Wednesday, November 05, 2014 3:27 AM > To: netdev > Cc: sathya.perla@emulex.com; jeffrey.t.kirsher@intel.com; > linux.nics@intel.com; amirv@mellanox.com; Shahed Shaikh; Dept-GE Linux > NIC Dev; Tom Herbert (Partner - google); linux-kernel > Subject: [PATCH net 5/5] qlcnic: Implement ndo_gso_check() > > 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 <joestringer@nicira.com> > --- > 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; > +
Hi Joe,
Yes, qlcnic driver only supports VXLAN offload. It would be good to put a comment about value 16 to make it more intuitive. e.g. 16 is the size of outer UDP header + VXLAN header.
Anyway, patch looks good to me.
Acked-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Thanks, Shahed
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