diff options
| -rw-r--r-- | include/linux/netdevice.h | 20 | ||||
| -rw-r--r-- | net/core/dev.c | 18 |
2 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 3ca60b0..875f869 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -728,6 +728,16 @@ struct netdev_fcoe_hbainfo { }; #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. * The following hooks can be defined; unless noted otherwise, they are @@ -932,6 +942,12 @@ struct netdev_fcoe_hbainfo { * that determine carrier state from physical hardware properties (eg * network cables) or protocol-dependent mechanisms (eg * 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 { int (*ndo_init)(struct net_device *dev); @@ -1060,6 +1076,8 @@ struct net_device_ops { struct nlmsghdr *nlh); int (*ndo_change_carrier)(struct net_device *dev, 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 *, struct sockaddr *); extern int dev_change_carrier(struct net_device *, 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, struct net_device *dev, struct netdev_queue *txq); diff --git a/net/core/dev.c b/net/core/dev.c index dfd9f5d..58eb802 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4989,6 +4989,24 @@ int dev_change_carrier(struct net_device *dev, bool new_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 * @net: the applicable net namespace * |
