mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 20:20:50 +07:00
f8ff182c71
Each net_device contains address family specific data such as
per device settings and statistics. We already expose this data
via procfs/sysfs and partially netlink.
The netlink method requires the requester to send one RTM_GETLINK
request for each address family it wishes to receive data of
and then merge this data itself.
This patch implements a new API which combines all address family
specific link data in a new netlink attribute IFLA_AF_SPEC.
IFLA_AF_SPEC contains a sequence of nested attributes, one for each
address family which in turn defines the structure of its own
attribute. Example:
[IFLA_AF_SPEC] = {
[AF_INET] = {
[IFLA_INET_CONF] = ...,
},
[AF_INET6] = {
[IFLA_INET6_FLAGS] = ...,
[IFLA_INET6_CONF] = ...,
}
}
The API also allows for address families to implement a function
which parses the IFLA_AF_SPEC attribute sent by userspace to
implement address family specific link options.
Signed-off-by: Thomas Graf <tgraf@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
127 lines
4.3 KiB
C
127 lines
4.3 KiB
C
#ifndef __NET_RTNETLINK_H
|
|
#define __NET_RTNETLINK_H
|
|
|
|
#include <linux/rtnetlink.h>
|
|
#include <net/netlink.h>
|
|
|
|
typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, void *);
|
|
typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
|
|
|
|
extern int __rtnl_register(int protocol, int msgtype,
|
|
rtnl_doit_func, rtnl_dumpit_func);
|
|
extern void rtnl_register(int protocol, int msgtype,
|
|
rtnl_doit_func, rtnl_dumpit_func);
|
|
extern int rtnl_unregister(int protocol, int msgtype);
|
|
extern void rtnl_unregister_all(int protocol);
|
|
|
|
static inline int rtnl_msg_family(const struct nlmsghdr *nlh)
|
|
{
|
|
if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))
|
|
return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;
|
|
else
|
|
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 *src_net,
|
|
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,
|
|
struct list_head *head);
|
|
|
|
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);
|
|
int (*get_tx_queues)(struct net *net, struct nlattr *tb[],
|
|
unsigned int *tx_queues,
|
|
unsigned int *real_tx_queues);
|
|
};
|
|
|
|
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);
|
|
|
|
/**
|
|
* struct rtnl_af_ops - rtnetlink address family operations
|
|
*
|
|
* @list: Used internally
|
|
* @family: Address family
|
|
* @fill_link_af: Function to fill IFLA_AF_SPEC with address family
|
|
* specific netlink attributes.
|
|
* @get_link_af_size: Function to calculate size of address family specific
|
|
* netlink attributes exlusive the container attribute.
|
|
* @parse_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
|
|
* net_device accordingly.
|
|
*/
|
|
struct rtnl_af_ops {
|
|
struct list_head list;
|
|
int family;
|
|
|
|
int (*fill_link_af)(struct sk_buff *skb,
|
|
const struct net_device *dev);
|
|
size_t (*get_link_af_size)(const struct net_device *dev);
|
|
|
|
int (*parse_link_af)(struct net_device *dev,
|
|
const struct nlattr *attr);
|
|
};
|
|
|
|
extern int __rtnl_af_register(struct rtnl_af_ops *ops);
|
|
extern void __rtnl_af_unregister(struct rtnl_af_ops *ops);
|
|
|
|
extern int rtnl_af_register(struct rtnl_af_ops *ops);
|
|
extern void rtnl_af_unregister(struct rtnl_af_ops *ops);
|
|
|
|
|
|
extern struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
|
|
extern struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
|
|
char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]);
|
|
extern int rtnl_configure_link(struct net_device *dev,
|
|
const struct ifinfomsg *ifm);
|
|
extern const struct nla_policy ifla_policy[IFLA_MAX+1];
|
|
|
|
#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
|
|
|
|
#endif
|