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 tunnel headers over UDP of up to 64 octets in length.
Implementation shamelessly stolen from Tom Herbert: http://thread.gmane.org/gmane.linux.network/332428/focus=333111 Signed-off-by: Joe Stringer <joestrin...@nicira.com> --- drivers/net/ethernet/intel/i40e/i40e_main.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index c3a7f4a..21829b5 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -7444,9 +7444,20 @@ static int i40e_ndo_fdb_dump(struct sk_buff *skb, return idx; } - #endif /* USE_DEFAULT_FDB_DEL_DUMP */ #endif /* HAVE_FDB_OPS */ + +static bool i40e_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) > 64)) + return false; + + return true; +} + static const struct net_device_ops i40e_netdev_ops = { .ndo_open = i40e_open, .ndo_stop = i40e_close, @@ -7487,6 +7498,7 @@ static const struct net_device_ops i40e_netdev_ops = { .ndo_fdb_dump = i40e_ndo_fdb_dump, #endif #endif + .ndo_gso_check = i40e_gso_check, }; /** -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
