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| author | Jay Vosburgh <fubar@us.ibm.com> | 2010-07-21 12:14:47 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-07-22 14:14:46 -0700 |
| commit | f35188faa0fbabefac476536994f4b6f3677380f (patch) | |
| tree | 460c54e3d8505fd0ce42d16a1798c1f8c371d4a9 /drivers/net/bonding/bond_alb.c | |
| parent | 4bee1f9ac066ef0350b961eab9fedc4d0bd0a549 (diff) | |
| download | blackbird-op-linux-f35188faa0fbabefac476536994f4b6f3677380f.tar.gz blackbird-op-linux-f35188faa0fbabefac476536994f4b6f3677380f.zip | |
bonding: change test for presence of VLANs
After commit ad1afb00393915a51c21b1ae8704562bf036855f
("vlan_dev: VLAN 0 should be treated as "no vlan tag" (802.1p packet)")
it is now regular practice for a VLAN "add vid" for VLAN 0 to
arrive prior to any VLAN registration or creation of a vlan_group.
This patch updates the bonding code that tests for the presence
of VLANs configured above bonding. The new logic tests for bond->vlgrp
to determine if a registration has occured, instead of testing that
bonding's internal vlan_list is empty.
The old code would panic when vlan_list was not empty, but
vlgrp was still NULL (because only an "add vid" for VLAN 0 had occured).
Bonding still adds VLAN 0 to its internal list so that 802.1p
frames are handled correctly on transmit when non-VLAN accelerated
slaves are members of the bond. The test against bond->vlan_list
remains in bond_dev_queue_xmit for this reason.
Modification to the bond->vlgrp now occurs under lock (in
addition to RTNL), because not all inspections of it occur under RTNL.
Additionally, because 8021q will never issue a "kill vid" for
VLAN 0, there is now logic in bond_uninit to release any remaining
entries from vlan_list.
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Cc: Pedro Garcia <pedro.netdev@dondevamos.com>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bonding/bond_alb.c')
| -rw-r--r-- | drivers/net/bonding/bond_alb.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c index 3662d6e446a9..e3b35d0b4284 100644 --- a/drivers/net/bonding/bond_alb.c +++ b/drivers/net/bonding/bond_alb.c @@ -682,7 +682,7 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon client_info->ntt = 0; } - if (!list_empty(&bond->vlan_list)) { + if (bond->vlgrp) { if (!vlan_get_tag(skb, &client_info->vlan_id)) client_info->tag = 1; } @@ -904,7 +904,7 @@ static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[]) skb->priority = TC_PRIO_CONTROL; skb->dev = slave->dev; - if (!list_empty(&bond->vlan_list)) { + if (bond->vlgrp) { struct vlan_entry *vlan; vlan = bond_next_vlan(bond, |
