diff options
| author | Jiri Pirko <jpirko@redhat.com> | 2011-03-12 03:14:35 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-03-16 12:51:19 -0700 |
| commit | f1c1775ac7e61950225925c949045406ffcb43de (patch) | |
| tree | dff2fc348c566df3c18f023043fd308bb75662f7 /drivers/net/bonding/bond_main.c | |
| parent | c888385a0d61c4c6923ecc3b9dacfe8a1d8cb222 (diff) | |
bonding: register slave pointer for rx_handler
Register slave pointer as rx_handler data. That would eventually prevent
need to loop over slave devices to find the right slave.
Use synchronize_net to ensure that bond_handle_frame does not get slave
structure freed when working with that.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bonding/bond_main.c')
| -rw-r--r-- | drivers/net/bonding/bond_main.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 66c98e61f0b..b047d75c28d 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1482,21 +1482,22 @@ static bool bond_should_deliver_exact_match(struct sk_buff *skb, static struct sk_buff *bond_handle_frame(struct sk_buff *skb) { - struct net_device *slave_dev; + struct slave *slave; struct net_device *bond_dev; skb = skb_share_check(skb, GFP_ATOMIC); if (unlikely(!skb)) return NULL; - slave_dev = skb->dev; - bond_dev = ACCESS_ONCE(slave_dev->master); + + slave = bond_slave_get_rcu(skb->dev); + bond_dev = ACCESS_ONCE(slave->dev->master); if (unlikely(!bond_dev)) return skb; if (bond_dev->priv_flags & IFF_MASTER_ARPMON) - slave_dev->last_rx = jiffies; + slave->dev->last_rx = jiffies; - if (bond_should_deliver_exact_match(skb, slave_dev, bond_dev)) { + if (bond_should_deliver_exact_match(skb, slave->dev, bond_dev)) { skb->deliver_no_wcard = 1; return skb; } @@ -1694,7 +1695,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) pr_debug("Error %d calling netdev_set_bond_master\n", res); goto err_restore_mac; } - res = netdev_rx_handler_register(slave_dev, bond_handle_frame, NULL); + res = netdev_rx_handler_register(slave_dev, bond_handle_frame, + new_slave); if (res) { pr_debug("Error %d calling netdev_rx_handler_register\n", res); goto err_unset_master; @@ -1916,6 +1918,7 @@ err_close: err_unreg_rxhandler: netdev_rx_handler_unregister(slave_dev); + synchronize_net(); err_unset_master: netdev_set_bond_master(slave_dev, NULL); @@ -2099,6 +2102,7 @@ int bond_release(struct net_device *bond_dev, struct net_device *slave_dev) } netdev_rx_handler_unregister(slave_dev); + synchronize_net(); netdev_set_bond_master(slave_dev, NULL); slave_disable_netpoll(slave); @@ -2213,6 +2217,7 @@ static int bond_release_all(struct net_device *bond_dev) } netdev_rx_handler_unregister(slave_dev); + synchronize_net(); netdev_set_bond_master(slave_dev, NULL); slave_disable_netpoll(slave); |