From f88a4a9b65a6f3422b81be995535d0e69df11bb8 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 13 Dec 2010 08:20:24 +0000 Subject: [PATCH] bonding/vlan: Fix mangled NAs on slaves without VLAN tag insertion bond_na_send() attempts to insert a VLAN tag in between building and sending packets of the respective formats. If the slave does not implement hardware VLAN tag insertion then vlan_put_tag() will mangle the network-layer header because the Ethernet header is not present at this point (unlike in bond_arp_send()). Fix this by adding the tag out-of-line and relying on dev_hard_start_xmit() to insert it inline if necessary. Signed-off-by: Ben Hutchings Signed-off-by: Jay Vosburgh Reviewed-by: Jesse Gross Signed-off-by: David S. Miller --- drivers/net/bonding/bond_ipv6.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/bonding/bond_ipv6.c b/drivers/net/bonding/bond_ipv6.c index 121b073a6c3..84fbd4ebd77 100644 --- a/drivers/net/bonding/bond_ipv6.c +++ b/drivers/net/bonding/bond_ipv6.c @@ -88,7 +88,12 @@ static void bond_na_send(struct net_device *slave_dev, } if (vlan_id) { - skb = vlan_put_tag(skb, vlan_id); + /* The Ethernet header is not present yet, so it is + * too early to insert a VLAN tag. Force use of an + * out-of-line tag here and let dev_hard_start_xmit() + * insert it if the slave hardware can't. + */ + skb = __vlan_hwaccel_put_tag(skb, vlan_id); if (!skb) { pr_err("failed to insert VLAN tag\n"); return; -- 2.11.4.GIT