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@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index e538478..2ec945c 100644 (file)
--- 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();