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69 lines
2.6 KiB
Diff
69 lines
2.6 KiB
Diff
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From ad729bc9acfb7c47112964b4877ef5404578ed13 Mon Sep 17 00:00:00 2001
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From: Andreas Born <futur.andy@googlemail.com>
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Date: Thu, 10 Aug 2017 06:41:44 +0200
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Subject: [PATCH] bonding: require speed/duplex only for 802.3ad, alb and tlb
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The patch c4adfc822bf5 ("bonding: make speed, duplex setting consistent
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with link state") puts the link state to down if
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bond_update_speed_duplex() cannot retrieve speed and duplex settings.
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Assumably the patch was written with 802.3ad mode in mind which relies
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on link speed/duplex settings. For other modes like active-backup these
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settings are not required. Thus, only for these other modes, this patch
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reintroduces support for slaves that do not support reporting speed or
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duplex such as wireless devices. This fixes the regression reported in
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bug 196547 (https://bugzilla.kernel.org/show_bug.cgi?id=196547).
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Fixes: c4adfc822bf5 ("bonding: make speed, duplex setting consistent
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with link state")
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Signed-off-by: Andreas Born <futur.andy@googlemail.com>
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Acked-by: Mahesh Bandewar <maheshb@google.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/bonding/bond_main.c | 6 ++++--
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include/net/bonding.h | 5 +++++
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2 files changed, 9 insertions(+), 2 deletions(-)
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diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
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index 9bee6c1c70cc..85bb272d2a34 100644
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--- a/drivers/net/bonding/bond_main.c
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+++ b/drivers/net/bonding/bond_main.c
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@@ -1569,7 +1569,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
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new_slave->delay = 0;
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new_slave->link_failure_count = 0;
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- if (bond_update_speed_duplex(new_slave))
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+ if (bond_update_speed_duplex(new_slave) &&
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+ bond_needs_speed_duplex(bond))
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new_slave->link = BOND_LINK_DOWN;
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new_slave->last_rx = jiffies -
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@@ -2140,7 +2141,8 @@ static void bond_miimon_commit(struct bonding *bond)
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continue;
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case BOND_LINK_UP:
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- if (bond_update_speed_duplex(slave)) {
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+ if (bond_update_speed_duplex(slave) &&
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+ bond_needs_speed_duplex(bond)) {
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slave->link = BOND_LINK_DOWN;
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netdev_warn(bond->dev,
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"failed to get link speed/duplex for %s\n",
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diff --git a/include/net/bonding.h b/include/net/bonding.h
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index b00508d22e0a..b2e68657a216 100644
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--- a/include/net/bonding.h
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+++ b/include/net/bonding.h
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@@ -277,6 +277,11 @@ static inline bool bond_is_lb(const struct bonding *bond)
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BOND_MODE(bond) == BOND_MODE_ALB;
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}
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+static inline bool bond_needs_speed_duplex(const struct bonding *bond)
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+{
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+ return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond);
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+}
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+
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static inline bool bond_is_nondyn_tlb(const struct bonding *bond)
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{
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return (BOND_MODE(bond) == BOND_MODE_TLB) &&
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--
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2.14.1
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