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1#ifndef __NET_RTNETLINK_H
2#define __NET_RTNETLINK_H
3
4#include <linux/rtnetlink.h>
5#include <net/netlink.h>
6
7typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *);
8typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
9typedef u16 (*rtnl_calcit_func)(struct sk_buff *, struct nlmsghdr *);
10
11int __rtnl_register(int protocol, int msgtype,
12 rtnl_doit_func, rtnl_dumpit_func, rtnl_calcit_func);
13void rtnl_register(int protocol, int msgtype,
14 rtnl_doit_func, rtnl_dumpit_func, rtnl_calcit_func);
15int rtnl_unregister(int protocol, int msgtype);
16void rtnl_unregister_all(int protocol);
17
18static inline int rtnl_msg_family(const struct nlmsghdr *nlh)
19{
20 if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))
21 return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;
22 else
23 return AF_UNSPEC;
24}
25
26/**
27 * struct rtnl_link_ops - rtnetlink link operations
28 *
29 * @list: Used internally
30 * @kind: Identifier
31 * @maxtype: Highest device specific netlink attribute number
32 * @policy: Netlink policy for device specific attribute validation
33 * @validate: Optional validation function for netlink/changelink parameters
34 * @priv_size: sizeof net_device private space
35 * @setup: net_device setup function
36 * @newlink: Function for configuring and registering a new device
37 * @changelink: Function for changing parameters of an existing device
38 * @dellink: Function to remove a device
39 * @get_size: Function to calculate required room for dumping device
40 * specific netlink attributes
41 * @fill_info: Function to dump device specific netlink attributes
42 * @get_xstats_size: Function to calculate required room for dumping device
43 * specific statistics
44 * @fill_xstats: Function to dump device specific statistics
45 * @get_num_tx_queues: Function to determine number of transmit queues
46 * to create when creating a new device.
47 * @get_num_rx_queues: Function to determine number of receive queues
48 * to create when creating a new device.
49 * @get_link_net: Function to get the i/o netns of the device
50 */
51struct rtnl_link_ops {
52 struct list_head list;
53
54 const char *kind;
55
56 size_t priv_size;
57 void (*setup)(struct net_device *dev);
58
59 int maxtype;
60 const struct nla_policy *policy;
61 int (*validate)(struct nlattr *tb[],
62 struct nlattr *data[]);
63
64 int (*newlink)(struct net *src_net,
65 struct net_device *dev,
66 struct nlattr *tb[],
67 struct nlattr *data[]);
68 int (*changelink)(struct net_device *dev,
69 struct nlattr *tb[],
70 struct nlattr *data[]);
71 void (*dellink)(struct net_device *dev,
72 struct list_head *head);
73
74 size_t (*get_size)(const struct net_device *dev);
75 int (*fill_info)(struct sk_buff *skb,
76 const struct net_device *dev);
77
78 size_t (*get_xstats_size)(const struct net_device *dev);
79 int (*fill_xstats)(struct sk_buff *skb,
80 const struct net_device *dev);
81 unsigned int (*get_num_tx_queues)(void);
82 unsigned int (*get_num_rx_queues)(void);
83
84 int slave_maxtype;
85 const struct nla_policy *slave_policy;
86 int (*slave_validate)(struct nlattr *tb[],
87 struct nlattr *data[]);
88 int (*slave_changelink)(struct net_device *dev,
89 struct net_device *slave_dev,
90 struct nlattr *tb[],
91 struct nlattr *data[]);
92 size_t (*get_slave_size)(const struct net_device *dev,
93 const struct net_device *slave_dev);
94 int (*fill_slave_info)(struct sk_buff *skb,
95 const struct net_device *dev,
96 const struct net_device *slave_dev);
97 struct net *(*get_link_net)(const struct net_device *dev);
98};
99
100int __rtnl_link_register(struct rtnl_link_ops *ops);
101void __rtnl_link_unregister(struct rtnl_link_ops *ops);
102
103int rtnl_link_register(struct rtnl_link_ops *ops);
104void rtnl_link_unregister(struct rtnl_link_ops *ops);
105
106/**
107 * struct rtnl_af_ops - rtnetlink address family operations
108 *
109 * @list: Used internally
110 * @family: Address family
111 * @fill_link_af: Function to fill IFLA_AF_SPEC with address family
112 * specific netlink attributes.
113 * @get_link_af_size: Function to calculate size of address family specific
114 * netlink attributes.
115 * @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
116 * for invalid configuration settings.
117 * @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
118 * net_device accordingly.
119 */
120struct rtnl_af_ops {
121 struct list_head list;
122 int family;
123
124 int (*fill_link_af)(struct sk_buff *skb,
125 const struct net_device *dev,
126 u32 ext_filter_mask);
127 size_t (*get_link_af_size)(const struct net_device *dev,
128 u32 ext_filter_mask);
129
130 int (*validate_link_af)(const struct net_device *dev,
131 const struct nlattr *attr);
132 int (*set_link_af)(struct net_device *dev,
133 const struct nlattr *attr);
134};
135
136void __rtnl_af_unregister(struct rtnl_af_ops *ops);
137
138void rtnl_af_register(struct rtnl_af_ops *ops);
139void rtnl_af_unregister(struct rtnl_af_ops *ops);
140
141struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
142struct net_device *rtnl_create_link(struct net *net, const char *ifname,
143 unsigned char name_assign_type,
144 const struct rtnl_link_ops *ops,
145 struct nlattr *tb[]);
146int rtnl_delete_link(struct net_device *dev);
147int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm);
148
149int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len);
150
151#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
152
153#endif
1#ifndef __NET_RTNETLINK_H
2#define __NET_RTNETLINK_H
3
4#include <linux/rtnetlink.h>
5#include <net/netlink.h>
6
7typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, void *);
8typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
9typedef u16 (*rtnl_calcit_func)(struct sk_buff *, struct nlmsghdr *);
10
11extern int __rtnl_register(int protocol, int msgtype,
12 rtnl_doit_func, rtnl_dumpit_func,
13 rtnl_calcit_func);
14extern void rtnl_register(int protocol, int msgtype,
15 rtnl_doit_func, rtnl_dumpit_func,
16 rtnl_calcit_func);
17extern int rtnl_unregister(int protocol, int msgtype);
18extern void rtnl_unregister_all(int protocol);
19
20static inline int rtnl_msg_family(const struct nlmsghdr *nlh)
21{
22 if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))
23 return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;
24 else
25 return AF_UNSPEC;
26}
27
28/**
29 * struct rtnl_link_ops - rtnetlink link operations
30 *
31 * @list: Used internally
32 * @kind: Identifier
33 * @maxtype: Highest device specific netlink attribute number
34 * @policy: Netlink policy for device specific attribute validation
35 * @validate: Optional validation function for netlink/changelink parameters
36 * @priv_size: sizeof net_device private space
37 * @setup: net_device setup function
38 * @newlink: Function for configuring and registering a new device
39 * @changelink: Function for changing parameters of an existing device
40 * @dellink: Function to remove a device
41 * @get_size: Function to calculate required room for dumping device
42 * specific netlink attributes
43 * @fill_info: Function to dump device specific netlink attributes
44 * @get_xstats_size: Function to calculate required room for dumping device
45 * specific statistics
46 * @fill_xstats: Function to dump device specific statistics
47 * @get_tx_queues: Function to determine number of transmit queues to create when
48 * creating a new device.
49 */
50struct rtnl_link_ops {
51 struct list_head list;
52
53 const char *kind;
54
55 size_t priv_size;
56 void (*setup)(struct net_device *dev);
57
58 int maxtype;
59 const struct nla_policy *policy;
60 int (*validate)(struct nlattr *tb[],
61 struct nlattr *data[]);
62
63 int (*newlink)(struct net *src_net,
64 struct net_device *dev,
65 struct nlattr *tb[],
66 struct nlattr *data[]);
67 int (*changelink)(struct net_device *dev,
68 struct nlattr *tb[],
69 struct nlattr *data[]);
70 void (*dellink)(struct net_device *dev,
71 struct list_head *head);
72
73 size_t (*get_size)(const struct net_device *dev);
74 int (*fill_info)(struct sk_buff *skb,
75 const struct net_device *dev);
76
77 size_t (*get_xstats_size)(const struct net_device *dev);
78 int (*fill_xstats)(struct sk_buff *skb,
79 const struct net_device *dev);
80 int (*get_tx_queues)(struct net *net,
81 struct nlattr *tb[]);
82};
83
84extern int __rtnl_link_register(struct rtnl_link_ops *ops);
85extern void __rtnl_link_unregister(struct rtnl_link_ops *ops);
86
87extern int rtnl_link_register(struct rtnl_link_ops *ops);
88extern void rtnl_link_unregister(struct rtnl_link_ops *ops);
89
90/**
91 * struct rtnl_af_ops - rtnetlink address family operations
92 *
93 * @list: Used internally
94 * @family: Address family
95 * @fill_link_af: Function to fill IFLA_AF_SPEC with address family
96 * specific netlink attributes.
97 * @get_link_af_size: Function to calculate size of address family specific
98 * netlink attributes.
99 * @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
100 * for invalid configuration settings.
101 * @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
102 * net_device accordingly.
103 */
104struct rtnl_af_ops {
105 struct list_head list;
106 int family;
107
108 int (*fill_link_af)(struct sk_buff *skb,
109 const struct net_device *dev);
110 size_t (*get_link_af_size)(const struct net_device *dev);
111
112 int (*validate_link_af)(const struct net_device *dev,
113 const struct nlattr *attr);
114 int (*set_link_af)(struct net_device *dev,
115 const struct nlattr *attr);
116};
117
118extern int __rtnl_af_register(struct rtnl_af_ops *ops);
119extern void __rtnl_af_unregister(struct rtnl_af_ops *ops);
120
121extern int rtnl_af_register(struct rtnl_af_ops *ops);
122extern void rtnl_af_unregister(struct rtnl_af_ops *ops);
123
124
125extern struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
126extern struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
127 char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]);
128extern int rtnl_configure_link(struct net_device *dev,
129 const struct ifinfomsg *ifm);
130extern const struct nla_policy ifla_policy[IFLA_MAX+1];
131
132#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
133
134#endif