Commit 38f7b870 authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller

[RTNETLINK]: Link creation API

Add rtnetlink API for creating, changing and deleting software devices.
Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0157f60c
......@@ -76,6 +76,8 @@ enum
#define IFLA_WEIGHT IFLA_WEIGHT
IFLA_OPERSTATE,
IFLA_LINKMODE,
IFLA_LINKINFO,
#define IFLA_LINKINFO IFLA_LINKINFO
__IFLA_MAX
};
......@@ -140,4 +142,15 @@ struct ifla_cacheinfo
__u32 retrans_time;
};
enum
{
IFLA_INFO_UNSPEC,
IFLA_INFO_KIND,
IFLA_INFO_DATA,
IFLA_INFO_XSTATS,
__IFLA_INFO_MAX,
};
#define IFLA_INFO_MAX (__IFLA_INFO_MAX - 1)
#endif /* _LINUX_IF_LINK_H */
......@@ -540,6 +540,9 @@ struct net_device
struct device dev;
/* space for optional statistics and wireless sysfs groups */
struct attribute_group *sysfs_groups[3];
/* rtnetlink link ops */
const struct rtnl_link_ops *rtnl_link_ops;
};
#define to_net_dev(d) container_of(d, struct net_device, dev)
......
......@@ -22,4 +22,62 @@ static inline int rtnl_msg_family(struct nlmsghdr *nlh)
return AF_UNSPEC;
}
/**
* struct rtnl_link_ops - rtnetlink link operations
*
* @list: Used internally
* @kind: Identifier
* @maxtype: Highest device specific netlink attribute number
* @policy: Netlink policy for device specific attribute validation
* @validate: Optional validation function for netlink/changelink parameters
* @priv_size: sizeof net_device private space
* @setup: net_device setup function
* @newlink: Function for configuring and registering a new device
* @changelink: Function for changing parameters of an existing device
* @dellink: Function to remove a device
* @get_size: Function to calculate required room for dumping device
* specific netlink attributes
* @fill_info: Function to dump device specific netlink attributes
* @get_xstats_size: Function to calculate required room for dumping devic
* specific statistics
* @fill_xstats: Function to dump device specific statistics
*/
struct rtnl_link_ops {
struct list_head list;
const char *kind;
size_t priv_size;
void (*setup)(struct net_device *dev);
int maxtype;
const struct nla_policy *policy;
int (*validate)(struct nlattr *tb[],
struct nlattr *data[]);
int (*newlink)(struct net_device *dev,
struct nlattr *tb[],
struct nlattr *data[]);
int (*changelink)(struct net_device *dev,
struct nlattr *tb[],
struct nlattr *data[]);
void (*dellink)(struct net_device *dev);
size_t (*get_size)(const struct net_device *dev);
int (*fill_info)(struct sk_buff *skb,
const struct net_device *dev);
size_t (*get_xstats_size)(const struct net_device *dev);
int (*fill_xstats)(struct sk_buff *skb,
const struct net_device *dev);
};
extern int __rtnl_link_register(struct rtnl_link_ops *ops);
extern void __rtnl_link_unregister(struct rtnl_link_ops *ops);
extern int rtnl_link_register(struct rtnl_link_ops *ops);
extern void rtnl_link_unregister(struct rtnl_link_ops *ops);
#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
#endif
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