netdev - [PATCH net 4/5] be2net: allow offloading with the same port for IPv4 and IPv6

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Message-Id: <1b2a27cefac4b736f098624b8c411aee6ccef9f2.1442498316.git.jbenc@redhat.com>
Date:	Thu, 17 Sep 2015 16:11:13 +0200
From:	Jiri Benc <jbenc@...hat.com>
To:	netdev@...r.kernel.org
Cc:	Sathya Perla <sathya.perla@...gotech.com>,
	Ajit Khaparde <ajit.khaparde@...gotech.com>,
	Padmanabh Ratnakar <padmanabh.ratnakar@...gotech.com>,
	Sriharsha Basavapatna <sriharsha.basavapatna@...gotech.com>
Subject: [PATCH net 4/5] be2net: allow offloading with the same port for IPv4 and IPv6

The callback for adding vxlan port can be called with the same port for both
IPv4 and IPv6. Do not disable the offloading if this occurs.

Signed-off-by: Jiri Benc <jbenc@...hat.com>
---
 drivers/net/ethernet/emulex/benet/be.h      |  1 +
 drivers/net/ethernet/emulex/benet/be_main.c | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h
index 0a27805cbbbd..821540913343 100644
--- a/drivers/net/ethernet/emulex/benet/be.h
+++ b/drivers/net/ethernet/emulex/benet/be.h
@@ -582,6 +582,7 @@ struct be_adapter {
 	u16 pvid;
 	__be16 vxlan_port;
 	int vxlan_port_count;
+	int vxlan_port_aliases;
 	struct phy_info phy;
 	u8 wol_cap;
 	bool wol_en;
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 12687bf52b95..7bf51a1a0a77 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -5176,6 +5176,11 @@ static void be_add_vxlan_port(struct net_device *netdev, sa_family_t sa_family,
 	if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter))
 		return;
 
+	if (adapter->vxlan_port == port && adapter->vxlan_port_count) {
+		adapter->vxlan_port_aliases++;
+		return;
+	}
+
 	if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) {
 		dev_info(dev,
 			 "Only one UDP port supported for VxLAN offloads\n");
@@ -5226,6 +5231,11 @@ static void be_del_vxlan_port(struct net_device *netdev, sa_family_t sa_family,
 	if (adapter->vxlan_port != port)
 		goto done;
 
+	if (adapter->vxlan_port_aliases) {
+		adapter->vxlan_port_aliases--;
+		return;
+	}
+
 	be_disable_vxlan_offloads(adapter);
 
 	dev_info(&adapter->pdev->dev,
-- 
1.8.3.1

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