Commit 66b52b0d authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller

net: add ndo to get id of physical port of the device

This patch adds a ndo for getting physical port of the device. Driver
which is aware of being virtual function of some physical port should
implement this ndo. This is applicable not only for IOV, but for other
solutions (NPAR, multichannel) as well. Basically if there is possible
to have multiple netdevs on the single hw port.
Signed-off-by: default avatarJiri Pirko <jiri@resnulli.us>
Acked-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9ad8fef6
...@@ -728,6 +728,16 @@ struct netdev_fcoe_hbainfo { ...@@ -728,6 +728,16 @@ struct netdev_fcoe_hbainfo {
}; };
#endif #endif
#define MAX_PHYS_PORT_ID_LEN 32
/* This structure holds a unique identifier to identify the
* physical port used by a netdevice.
*/
struct netdev_phys_port_id {
unsigned char id[MAX_PHYS_PORT_ID_LEN];
unsigned char id_len;
};
/* /*
* This structure defines the management hooks for network devices. * This structure defines the management hooks for network devices.
* The following hooks can be defined; unless noted otherwise, they are * The following hooks can be defined; unless noted otherwise, they are
...@@ -932,6 +942,12 @@ struct netdev_fcoe_hbainfo { ...@@ -932,6 +942,12 @@ struct netdev_fcoe_hbainfo {
* that determine carrier state from physical hardware properties (eg * that determine carrier state from physical hardware properties (eg
* network cables) or protocol-dependent mechanisms (eg * network cables) or protocol-dependent mechanisms (eg
* USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function.
*
* int (*ndo_get_phys_port_id)(struct net_device *dev,
* struct netdev_phys_port_id *ppid);
* Called to get ID of physical port of this device. If driver does
* not implement this, it is assumed that the hw is not able to have
* multiple net devices on single physical port.
*/ */
struct net_device_ops { struct net_device_ops {
int (*ndo_init)(struct net_device *dev); int (*ndo_init)(struct net_device *dev);
...@@ -1060,6 +1076,8 @@ struct net_device_ops { ...@@ -1060,6 +1076,8 @@ struct net_device_ops {
struct nlmsghdr *nlh); struct nlmsghdr *nlh);
int (*ndo_change_carrier)(struct net_device *dev, int (*ndo_change_carrier)(struct net_device *dev,
bool new_carrier); bool new_carrier);
int (*ndo_get_phys_port_id)(struct net_device *dev,
struct netdev_phys_port_id *ppid);
}; };
/* /*
...@@ -2315,6 +2333,8 @@ extern int dev_set_mac_address(struct net_device *, ...@@ -2315,6 +2333,8 @@ extern int dev_set_mac_address(struct net_device *,
struct sockaddr *); struct sockaddr *);
extern int dev_change_carrier(struct net_device *, extern int dev_change_carrier(struct net_device *,
bool new_carrier); bool new_carrier);
extern int dev_get_phys_port_id(struct net_device *dev,
struct netdev_phys_port_id *ppid);
extern int dev_hard_start_xmit(struct sk_buff *skb, extern int dev_hard_start_xmit(struct sk_buff *skb,
struct net_device *dev, struct net_device *dev,
struct netdev_queue *txq); struct netdev_queue *txq);
......
...@@ -4988,6 +4988,24 @@ int dev_change_carrier(struct net_device *dev, bool new_carrier) ...@@ -4988,6 +4988,24 @@ int dev_change_carrier(struct net_device *dev, bool new_carrier)
} }
EXPORT_SYMBOL(dev_change_carrier); EXPORT_SYMBOL(dev_change_carrier);
/**
* dev_get_phys_port_id - Get device physical port ID
* @dev: device
* @ppid: port ID
*
* Get device physical port ID
*/
int dev_get_phys_port_id(struct net_device *dev,
struct netdev_phys_port_id *ppid)
{
const struct net_device_ops *ops = dev->netdev_ops;
if (!ops->ndo_get_phys_port_id)
return -EOPNOTSUPP;
return ops->ndo_get_phys_port_id(dev, ppid);
}
EXPORT_SYMBOL(dev_get_phys_port_id);
/** /**
* dev_new_index - allocate an ifindex * dev_new_index - allocate an ifindex
* @net: the applicable net namespace * @net: the applicable net namespace
......
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