From: Jiri Bohac Date: Fri, 14 Feb 2014 17:13:50 +0000 (+0100) Subject: bonding: 802.3ad: make aggregator_identifier bond-private X-Git-Tag: v3.12.14~133 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c92210fdc60d7be2ece4fbdbdd82d811355583d8;p=kernel%2Fkernel-generic.git bonding: 802.3ad: make aggregator_identifier bond-private [ Upstream commit 163c8ff30dbe473abfbb24a7eac5536c87f3baa9 ] aggregator_identifier is used to assign unique aggregator identifiers to aggregators of a bond during device enslaving. aggregator_identifier is currently a global variable that is zeroed in bond_3ad_initialize(). This sequence will lead to duplicate aggregator identifiers for eth1 and eth3: create bond0 change bond0 mode to 802.3ad enslave eth0 to bond0 //eth0 gets agg id 1 enslave eth1 to bond0 //eth1 gets agg id 2 create bond1 change bond1 mode to 802.3ad enslave eth2 to bond1 //aggregator_identifier is reset to 0 //eth2 gets agg id 1 enslave eth3 to bond0 //eth3 gets agg id 2 Fix this by making aggregator_identifier private to the bond. Signed-off-by: Jiri Bohac Acked-by: Veaceslav Falico Signed-off-by: David S. Miller Signed-off-by: Jiri Slaby --- diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c index 0d8f427..b3c2252 100644 --- a/drivers/net/bonding/bond_3ad.c +++ b/drivers/net/bonding/bond_3ad.c @@ -1861,8 +1861,6 @@ void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout) BOND_AD_INFO(bond).agg_select_timer = timeout; } -static u16 aggregator_identifier; - /** * bond_3ad_initialize - initialize a bond's 802.3ad parameters and structures * @bond: bonding struct to work on @@ -1876,7 +1874,7 @@ void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution) if (MAC_ADDRESS_COMPARE(&(BOND_AD_INFO(bond).system.sys_mac_addr), bond->dev->dev_addr)) { - aggregator_identifier = 0; + BOND_AD_INFO(bond).aggregator_identifier = 0; BOND_AD_INFO(bond).system.sys_priority = 0xFFFF; BOND_AD_INFO(bond).system.sys_mac_addr = *((struct mac_addr *)bond->dev->dev_addr); @@ -1947,7 +1945,7 @@ int bond_3ad_bind_slave(struct slave *slave) ad_initialize_agg(aggregator); aggregator->aggregator_mac_address = *((struct mac_addr *)bond->dev->dev_addr); - aggregator->aggregator_identifier = (++aggregator_identifier); + aggregator->aggregator_identifier = ++BOND_AD_INFO(bond).aggregator_identifier; aggregator->slave = slave; aggregator->is_active = 0; aggregator->num_of_ports = 0; diff --git a/drivers/net/bonding/bond_3ad.h b/drivers/net/bonding/bond_3ad.h index 5d91ad0..1f081c8 100644 --- a/drivers/net/bonding/bond_3ad.h +++ b/drivers/net/bonding/bond_3ad.h @@ -253,6 +253,7 @@ struct ad_system { struct ad_bond_info { struct ad_system system; /* 802.3ad system structure */ u32 agg_select_timer; // Timer to select aggregator after all adapter's hand shakes + u16 aggregator_identifier; }; struct ad_slave_info {