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devlink: create a special NDO for getting the devlink instance

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Instead of iterating over all devlink ports add a NDO which
will return the devlink instance from the driver.

v2: add the netdev_to_devlink() helper (Michal)
v3: check that devlink has ops (Florian)
v4: hold devlink_mutex (Jiri)

Suggested-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski
2019-02-25 19:34:03 -08:00
committed by David S. Miller
parent f4b6bcc700
commit b473b0d235
3 changed files with 33 additions and 39 deletions
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9
include/net/devlink.h
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@@ -538,6 +538,15 @@ static inline struct devlink *priv_to_devlink(void *priv)
return container_of(priv, struct devlink, priv);
}
static inline struct devlink *netdev_to_devlink(struct net_device *dev)
{
#if IS_ENABLED(CONFIG_NET_DEVLINK)
if (dev->netdev_ops->ndo_get_devlink)
return dev->netdev_ops->ndo_get_devlink(dev);
#endif
return NULL;
}
struct ib_device;
#if IS_ENABLED(CONFIG_NET_DEVLINK)