netdev - [PATCH net] bonding: Don't assume 802.1Q when sending alb learning packets.

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Message-Id: <1400685879-21843-1-git-send-email-vyasevic@redhat.com>
Date:	Wed, 21 May 2014 11:24:39 -0400
From:	Vlad Yasevich <vyasevic@...hat.com>
To:	netdev@...r.kernel.org
Cc:	Vlad Yasevich <vyasevic@...hat.com>,
	Jay Vosburgh <j.vosburgh@...il.com>,
	Veaceslav Falico <vfalico@...il.com>,
	Andy Gospodarek <andy@...yhouse.net>
Subject: [PATCH net] bonding: Don't assume 802.1Q when sending alb learning packets.

TLB/ALB learning packets always assume 802.1Q vlan protocol, but
that is no longer the case since we now have support for Q-in-Q
on top of bonding.  Pass the vlan protocol to alb_send_lp_vid()
so that the packets are properly tagged.

CC: Jay Vosburgh <j.vosburgh@...il.com>
CC: Veaceslav Falico <vfalico@...il.com>
CC: Andy Gospodarek <andy@...yhouse.net>
Signed-off-by: Vlad Yasevich <vyasevic@...hat.com>
---
 drivers/net/bonding/bond_alb.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index e538478..2ec945c 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -995,7 +995,7 @@ static void rlb_clear_vlan(struct bonding *bond, unsigned short vlan_id)
 /*********************** tlb/rlb shared functions *********************/
 
 static void alb_send_lp_vid(struct slave *slave, u8 mac_addr[],
-			    u16 vid)
+			    __be16 vlan_proto, u16 vid)
 {
 	struct learning_pkt pkt;
 	struct sk_buff *skb;
@@ -1021,7 +1021,7 @@ static void alb_send_lp_vid(struct slave *slave, u8 mac_addr[],
 	skb->dev = slave->dev;
 
 	if (vid) {
-		skb = vlan_put_tag(skb, htons(ETH_P_8021Q), vid);
+		skb = vlan_put_tag(skb, vlan_proto, vid);
 		if (!skb) {
 			pr_err("%s: Error: failed to insert VLAN tag\n",
 			       slave->bond->dev->name);
@@ -1040,13 +1040,14 @@ static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[])
 	struct list_head *iter;
 
 	/* send untagged */
-	alb_send_lp_vid(slave, mac_addr, 0);
+	alb_send_lp_vid(slave, mac_addr, 0, 0);
 
 	/* loop through vlans and send one packet for each */
 	rcu_read_lock();
 	netdev_for_each_all_upper_dev_rcu(bond->dev, upper, iter) {
 		if (is_vlan_dev(upper) && vlan_get_encap_level(upper) == 0)
 			alb_send_lp_vid(slave, mac_addr,
+					vlan_dev_vlan_proto(upper),
 					vlan_dev_vlan_id(upper));
 	}
 	rcu_read_unlock();
-- 
1.9.0

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