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authorPravin B Shelar <pshelar@nicira.com>2013-02-14 14:02:41 +0000
committerDavid S. Miller <davem@davemloft.net>2013-02-15 15:17:11 -0500
commit68c331631143f5f039baac99a650e0b9e1ea02b6 (patch)
treec69d73c5599aab5e92a8c99bc5343c9fc9ffbbd8 /net/core/ethtool.c
parent05e8ef4ab2d8087d360e814d14da20b9f7fb2283 (diff)
v4 GRE: Add TCP segmentation offload for GRE
Following patch adds GRE protocol offload handler so that skb_gso_segment() can segment GRE packets. SKB GSO CB is added to keep track of total header length so that skb_segment can push entire header. e.g. in case of GRE, skb_segment need to push inner and outer headers to every segment. New NETIF_F_GRE_GSO feature is added for devices which support HW GRE TSO offload. Currently none of devices support it therefore GRE GSO always fall backs to software GSO. [ Compute pkt_len before ip_local_out() invocation. -DaveM ] Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/ethtool.c')
-rw-r--r--net/core/ethtool.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index d9d55209db67..3e9b2c3e30f0 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -77,6 +77,7 @@ static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN]
[NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
[NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
[NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
+ [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
[NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
[NETIF_F_SCTP_CSUM_BIT] = "tx-checksum-sctp",