lkml.org 
[lkml]   [2014]   [Nov]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH net 3/5] fm10k: Implement ndo_gso_check()
Date
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>
---
Should this driver report support for GSO on packets with tunnel headers
up to 64B like the i40e driver does?
---
drivers/net/ethernet/intel/fm10k/fm10k_netdev.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
index 8811364..b9ef622 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
@@ -1350,6 +1350,17 @@ static void fm10k_dfwd_del_station(struct net_device *dev, void *priv)
}
}

+static bool fm10k_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 fm10k_netdev_ops = {
.ndo_open = fm10k_open,
.ndo_stop = fm10k_close,
@@ -1372,6 +1383,7 @@ static const struct net_device_ops fm10k_netdev_ops = {
.ndo_do_ioctl = fm10k_ioctl,
.ndo_dfwd_add_station = fm10k_dfwd_add_station,
.ndo_dfwd_del_station = fm10k_dfwd_del_station,
+ .ndo_gso_check = fm10k_gso_check,
};

#define DEFAULT_DEBUG_LEVEL_SHIFT 3
--
1.7.10.4


\
 
 \ /
  Last update: 2014-11-04 23:21    [W:0.143 / U:1.000 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site