[PATCH] bonding: show full hw address in sysfs for slave entries

[PATCH] bonding: show full hw address in sysfs for slave entries

[Konstantin Khorenko]

Bond expects ethernet hwaddr for its slave, but it can be longer than 6
bytes - infiniband interface for example.

 # cat /sys/devices/<skipped>/net/ib0/address
 80:00:02:08:fe:80:00:00:00:00:00:00:7c:fe:90:03:00:be:5d:e1

 # cat /sys/devices/<skipped>/net/ib0/bonding_slave/perm_hwaddr
 80:00:02:08:fe:80

So print full hwaddr in sysfs "bonding_slave/perm_hwaddr" as well.

Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>
---
 drivers/net/bonding/bond_sysfs_slave.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bonding/bond_sysfs_slave.c b/drivers/net/bonding/bond_sysfs_slave.c
index 2f120b2ffef0..4985268e2273 100644
--- a/drivers/net/bonding/bond_sysfs_slave.c
+++ b/drivers/net/bonding/bond_sysfs_slave.c
@@ -55,7 +55,9 @@ static SLAVE_ATTR_RO(link_failure_count);
 
 static ssize_t perm_hwaddr_show(struct slave *slave, char *buf)
 {
-	return sprintf(buf, "%pM\n", slave->perm_hwaddr);
+	return sprintf(buf, "%*phC\n",
+		       slave->dev->addr_len,
+		       slave->perm_hwaddr);
 }
 static SLAVE_ATTR_RO(perm_hwaddr);
 
-- 
2.15.1

Re: [PATCH] bonding: show full hw address in sysfs for slave entries

[David Miller]

From: Konstantin Khorenko <khorenko@virtuozzo.com>
Date: Thu, 28 Mar 2019 13:29:21 +0300

> Bond expects ethernet hwaddr for its slave, but it can be longer than 6
> bytes - infiniband interface for example.
> 
>  # cat /sys/devices/<skipped>/net/ib0/address
>  80:00:02:08:fe:80:00:00:00:00:00:00:7c:fe:90:03:00:be:5d:e1
> 
>  # cat /sys/devices/<skipped>/net/ib0/bonding_slave/perm_hwaddr
>  80:00:02:08:fe:80
> 
> So print full hwaddr in sysfs "bonding_slave/perm_hwaddr" as well.
> 
> Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>

Applied, thanks.

Re: [PATCH] bonding: show full hw address in sysfs for slave entries

[Jay Vosburgh]

Konstantin Khorenko <khorenko@virtuozzo.com> wrote:

>Bond expects ethernet hwaddr for its slave, but it can be longer than 6
>bytes - infiniband interface for example.
>
> # cat /sys/devices/<skipped>/net/ib0/address
> 80:00:02:08:fe:80:00:00:00:00:00:00:7c:fe:90:03:00:be:5d:e1
>
> # cat /sys/devices/<skipped>/net/ib0/bonding_slave/perm_hwaddr
> 80:00:02:08:fe:80
>
>So print full hwaddr in sysfs "bonding_slave/perm_hwaddr" as well.
>
>Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>
>---
> drivers/net/bonding/bond_sysfs_slave.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/net/bonding/bond_sysfs_slave.c b/drivers/net/bonding/bond_sysfs_slave.c
>index 2f120b2ffef0..4985268e2273 100644
>--- a/drivers/net/bonding/bond_sysfs_slave.c
>+++ b/drivers/net/bonding/bond_sysfs_slave.c
>@@ -55,7 +55,9 @@ static SLAVE_ATTR_RO(link_failure_count);
> 
> static ssize_t perm_hwaddr_show(struct slave *slave, char *buf)
> {
>-	return sprintf(buf, "%pM\n", slave->perm_hwaddr);
>+	return sprintf(buf, "%*phC\n",
>+		       slave->dev->addr_len,
>+		       slave->perm_hwaddr);
> }
> static SLAVE_ATTR_RO(perm_hwaddr);

Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>

	-J

---
	-Jay Vosburgh, jay.vosburgh@canonical.com