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| author | Fernando Fernandez Mancera <ffmancera@riseup.net> | 2021-12-21 14:13:45 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-29 14:25:57 +0300 |
| commit | c6d2754006c1b75d981dd1b3e4432eaafde81373 (patch) | |
| tree | 0705a8a1159c21700cb86c94fb7afc8af6646089 | |
| parent | 6809da5185141e61401da5b01896b79a4deed1ad (diff) | |
| download | linux-c6d2754006c1b75d981dd1b3e4432eaafde81373.tar.xz | |
bonding: fix ad_actor_system option setting to default
[ Upstream commit 1c15b05baea71a5ff98235783e3e4ad227760876 ]
When 802.3ad bond mode is configured the ad_actor_system option is set to
"00:00:00:00:00:00". But when trying to set the all-zeroes MAC as actors'
system address it was failing with EINVAL.
An all-zeroes ethernet address is valid, only multicast addresses are not
valid values.
Fixes: 171a42c38c6e ("bonding: add netlink support for sys prio, actor sys mac, and port key")
Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Link: https://lore.kernel.org/r/20211221111345.2462-1-ffmancera@riseup.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | Documentation/networking/bonding.rst | 11 | ||||
| -rw-r--r-- | drivers/net/bonding/bond_options.c | 2 |
2 files changed, 7 insertions, 6 deletions
diff --git a/Documentation/networking/bonding.rst b/Documentation/networking/bonding.rst index adc314639085..413dca513e1d 100644 --- a/Documentation/networking/bonding.rst +++ b/Documentation/networking/bonding.rst @@ -196,11 +196,12 @@ ad_actor_sys_prio ad_actor_system In an AD system, this specifies the mac-address for the actor in - protocol packet exchanges (LACPDUs). The value cannot be NULL or - multicast. It is preferred to have the local-admin bit set for this - mac but driver does not enforce it. If the value is not given then - system defaults to using the masters' mac address as actors' system - address. + protocol packet exchanges (LACPDUs). The value cannot be a multicast + address. If the all-zeroes MAC is specified, bonding will internally + use the MAC of the bond itself. It is preferred to have the + local-admin bit set for this mac but driver does not enforce it. If + the value is not given then system defaults to using the masters' + mac address as actors' system address. This parameter has effect only in 802.3ad mode and is available through SysFs interface. diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c index a4e4e15f574d..fe55c81608da 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -1466,7 +1466,7 @@ static int bond_option_ad_actor_system_set(struct bonding *bond, mac = (u8 *)&newval->value; } - if (!is_valid_ether_addr(mac)) + if (is_multicast_ether_addr(mac)) goto err; netdev_dbg(bond->dev, "Setting ad_actor_system to %pM\n", mac); |