netdev - [PATCH net-next v2 1/4] netdev: introduce new NETIF_F_HW_NETFUNC_OFFLOAD feature flag for switch device offloads

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Date:	Wed, 10 Dec 2014 01:05:17 -0800
From:	roopa@...ulusnetworks.com
To:	jiri@...nulli.us, sfeldma@...il.com, jhs@...atatu.com,
	bcrl@...ck.org, tgraf@...g.ch, john.fastabend@...il.com,
	stephen@...workplumber.org, linville@...driver.com,
	vyasevic@...hat.com
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	shm@...ulusnetworks.com, gospo@...ulusnetworks.com,
	Roopa Prabhu <roopa@...ulusnetworks.com>
Subject: [PATCH net-next v2 1/4] netdev: introduce new NETIF_F_HW_NETFUNC_OFFLOAD feature flag for switch device offloads

From: Roopa Prabhu <roopa@...ulusnetworks.com>

This is a high level feature flag for all switch asic offloads

switch drivers set this flag on switch ports. Logical devices like
bridge, bonds, vxlans can inherit this flag from their slaves/ports.

The patch also adds the flag to NETIF_F_ONE_FOR_ALL, so that it gets
propagated to the upperdevices (bridges and bonds).

(In case you did not notice, I am trying a new name NETIF_F_HW_NETFUNC_OFFLOAD for the flag ;)

Signed-off-by: Roopa Prabhu <roopa@...ulusnetworks.com>
---
 include/linux/netdev_features.h |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 8e30685..8ab175b 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -66,6 +66,7 @@ enum {
 	NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */
 	NETIF_F_HW_L2FW_DOFFLOAD_BIT,	/* Allow L2 Forwarding in Hardware */
 	NETIF_F_BUSY_POLL_BIT,		/* Busy poll */
+	NETIF_F_HW_NETFUNC_OFFLOAD_BIT,  /* HW switch offload */
 
 	/*
 	 * Add your fresh new feature above and remember to update
@@ -124,6 +125,7 @@ enum {
 #define NETIF_F_HW_VLAN_STAG_TX	__NETIF_F(HW_VLAN_STAG_TX)
 #define NETIF_F_HW_L2FW_DOFFLOAD	__NETIF_F(HW_L2FW_DOFFLOAD)
 #define NETIF_F_BUSY_POLL	__NETIF_F(BUSY_POLL)
+#define NETIF_F_HW_NETFUNC_OFFLOAD	__NETIF_F(HW_NETFUNC_OFFLOAD)
 
 /* Features valid for ethtool to change */
 /* = all defined minus driver/device-class-related */
@@ -159,7 +161,8 @@ enum {
  */
 #define NETIF_F_ONE_FOR_ALL	(NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
 				 NETIF_F_SG | NETIF_F_HIGHDMA |		\
-				 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
+				 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED | \
+				 NETIF_F_HW_NETFUNC_OFFLOAD)
 /*
  * If one device doesn't support one of these features, then disable it
  * for all in netdev_increment_features.
-- 
1.7.10.4

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