[PATCH net 2/5] i40e: Implement ndo_gso_check()
From: Joe Stringer <hidden>
Date: 2014-11-04 22:03:57
Also in:
lkml
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> --- 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, }; /**
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1.7.10.4