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net: devlink: introduce devlink_compat_phys_port_name_get()

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Introduce devlink_compat_phys_port_name_get() helper that
gets the physical port name for specified netdevice
according to devlink port attributes.
Call this helper from dev_get_phys_port_name()
in case ndo_get_phys_port_name is not defined.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko
2019-03-28 13:56:37 +01:00
committed by David S. Miller
parent 5dc37bb9b0
commit af3836df9a
3 changed files with 43 additions and 5 deletions
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11
net/core/dev.c
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@@ -146,6 +146,7 @@
#include <net/udp_tunnel.h>
#include <linux/net_namespace.h>
#include <linux/indirect_call_wrapper.h>
#include <net/devlink.h>
#include "net-sysfs.h"
@@ -7877,10 +7878,14 @@ int dev_get_phys_port_name(struct net_device *dev,
char *name, size_t len)
{
const struct net_device_ops *ops = dev->netdev_ops;
int err;
if (!ops->ndo_get_phys_port_name)
return -EOPNOTSUPP;
return ops->ndo_get_phys_port_name(dev, name, len);
if (ops->ndo_get_phys_port_name) {
err = ops->ndo_get_phys_port_name(dev, name, len);
if (err != -EOPNOTSUPP)
return err;
}
return devlink_compat_phys_port_name_get(dev, name, len);
}
EXPORT_SYMBOL(dev_get_phys_port_name);