[patch 01/88] bonding: Fix updating of speed/duplex changes

Greg KH
2009-04-30T17:07:35Z

[-- Attachment #1: bonding-fix-updating-of-speed-duplex-changes.patch --]
[-- Type: text/plain, Size: 2406 bytes --]

2.6.28-stable review patch. If anyone has any objections, please let us know.

------------------

From: Jay Vosburgh <fubar@us.ibm.com>

[ Upstream commit 17d04500e2528217de5fe967599f98ee84348a9c ]

This patch corrects an omission from the following commit:

commit f0c76d61779b153dbfb955db3f144c62d02173c2
Author: Jay Vosburgh <fubar@us.ibm.com>
Date: Wed Jul 2 18:21:58 2008 -0700

bonding: refactor mii monitor

The un-refactored code checked the link speed and duplex of
every slave on every pass; the refactored code did not do so.

The 802.3ad and balance-alb/tlb modes utilize the speed and
duplex information, and require it to be kept up to date. This patch
adds a notifier check to perform the appropriate updating when the slave
device speed changes.

Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/net/bonding/bond_main.c | 25 ++++++++++++++++++++-----
drivers/net/bonding/bonding.h | 6 ++++++
2 files changed, 26 insertions(+), 5 deletions(-)

--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -248,6 +248,12 @@ static inline struct bonding *bond_get_b
return (struct bonding *)slave->dev->master->priv;
}

+static inline bool bond_is_lb(const struct bonding *bond)
+{
+ return bond->params.mode == BOND_MODE_TLB
+ || bond->params.mode == BOND_MODE_ALB;
+}
+
#define BOND_FOM_NONE 0
#define BOND_FOM_ACTIVE 1
#define BOND_FOM_FOLLOW 2
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3536,11 +3536,26 @@ static int bond_slave_netdev_event(unsig
}
break;
case NETDEV_CHANGE:
- /*
- * TODO: is this what we get if somebody
- * sets up a hierarchical bond, then rmmod's
- * one of the slave bonding devices?
- */
+ if (bond->params.mode == BOND_MODE_8023AD || bond_is_lb(bond)) {
+ struct slave *slave;
+
+ slave = bond_get_slave_by_dev(bond, slave_dev);
+ if (slave) {
+ u16 old_speed = slave->speed;
+ u16 old_duplex = slave->duplex;
+
+ bond_update_speed_duplex(slave);
+
+ if (bond_is_lb(bond))
+ break;
+
+ if (old_speed != slave->speed)
+ bond_3ad_adapter_speed_changed(slave);
+ if (old_duplex != slave->duplex)
+ bond_3ad_adapter_duplex_changed(slave);
+ }
+ }
+
break;
case NETDEV_DOWN:
/*