From b5bf0f5b16b9c316c34df9f31d4be8729eb86845 Mon Sep 17 00:00:00 2001 From: Mahesh Bandewar Date: Mon, 27 Mar 2017 11:37:37 -0700 Subject: [PATCH] bonding: correctly update link status during mii-commit phase bond_miimon_commit() marks the link UP after attempting to get the speed and duplex settings for the link. There is a possibility that bond_update_speed_duplex() could fail. This is another place where it could result into an inconsistent bonding link state. With this patch the link will be marked UP only if the speed and duplex values retrieved have sane values and processed further. Signed-off-by: Mahesh Bandewar Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index ad317bb63193..6cea964ab70a 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -2125,7 +2125,12 @@ static void bond_miimon_commit(struct bonding *bond) continue; case BOND_LINK_UP: - bond_update_speed_duplex(slave); + if (bond_update_speed_duplex(slave)) { + netdev_warn(bond->dev, + "failed to get link speed/duplex for %s\n", + slave->dev->name); + continue; + } bond_set_slave_link_state(slave, BOND_LINK_UP, BOND_SLAVE_NOTIFY_NOW); slave->last_link_up = jiffies; -- 2.39.2