Merge branch 'for-4.15/dax' into libnvdimm-for-next
[linux-2.6-microblaze.git] / include / net / rtnetlink.h
1 #ifndef __NET_RTNETLINK_H
2 #define __NET_RTNETLINK_H
3
4 #include <linux/rtnetlink.h>
5 #include <net/netlink.h>
6
7 typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *,
8                               struct netlink_ext_ack *);
9 typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
10
11 enum rtnl_link_flags {
12         RTNL_FLAG_DOIT_UNLOCKED = 1,
13 };
14
15 int __rtnl_register(int protocol, int msgtype,
16                     rtnl_doit_func, rtnl_dumpit_func, unsigned int flags);
17 void rtnl_register(int protocol, int msgtype,
18                    rtnl_doit_func, rtnl_dumpit_func, unsigned int flags);
19 int rtnl_unregister(int protocol, int msgtype);
20 void rtnl_unregister_all(int protocol);
21
22 static inline int rtnl_msg_family(const struct nlmsghdr *nlh)
23 {
24         if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))
25                 return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;
26         else
27                 return AF_UNSPEC;
28 }
29
30 /**
31  *      struct rtnl_link_ops - rtnetlink link operations
32  *
33  *      @list: Used internally
34  *      @kind: Identifier
35  *      @maxtype: Highest device specific netlink attribute number
36  *      @policy: Netlink policy for device specific attribute validation
37  *      @validate: Optional validation function for netlink/changelink parameters
38  *      @priv_size: sizeof net_device private space
39  *      @setup: net_device setup function
40  *      @newlink: Function for configuring and registering a new device
41  *      @changelink: Function for changing parameters of an existing device
42  *      @dellink: Function to remove a device
43  *      @get_size: Function to calculate required room for dumping device
44  *                 specific netlink attributes
45  *      @fill_info: Function to dump device specific netlink attributes
46  *      @get_xstats_size: Function to calculate required room for dumping device
47  *                        specific statistics
48  *      @fill_xstats: Function to dump device specific statistics
49  *      @get_num_tx_queues: Function to determine number of transmit queues
50  *                          to create when creating a new device.
51  *      @get_num_rx_queues: Function to determine number of receive queues
52  *                          to create when creating a new device.
53  *      @get_link_net: Function to get the i/o netns of the device
54  *      @get_linkxstats_size: Function to calculate the required room for
55  *                            dumping device-specific extended link stats
56  *      @fill_linkxstats: Function to dump device-specific extended link stats
57  */
58 struct rtnl_link_ops {
59         struct list_head        list;
60
61         const char              *kind;
62
63         size_t                  priv_size;
64         void                    (*setup)(struct net_device *dev);
65
66         int                     maxtype;
67         const struct nla_policy *policy;
68         int                     (*validate)(struct nlattr *tb[],
69                                             struct nlattr *data[],
70                                             struct netlink_ext_ack *extack);
71
72         int                     (*newlink)(struct net *src_net,
73                                            struct net_device *dev,
74                                            struct nlattr *tb[],
75                                            struct nlattr *data[],
76                                            struct netlink_ext_ack *extack);
77         int                     (*changelink)(struct net_device *dev,
78                                               struct nlattr *tb[],
79                                               struct nlattr *data[],
80                                               struct netlink_ext_ack *extack);
81         void                    (*dellink)(struct net_device *dev,
82                                            struct list_head *head);
83
84         size_t                  (*get_size)(const struct net_device *dev);
85         int                     (*fill_info)(struct sk_buff *skb,
86                                              const struct net_device *dev);
87
88         size_t                  (*get_xstats_size)(const struct net_device *dev);
89         int                     (*fill_xstats)(struct sk_buff *skb,
90                                                const struct net_device *dev);
91         unsigned int            (*get_num_tx_queues)(void);
92         unsigned int            (*get_num_rx_queues)(void);
93
94         int                     slave_maxtype;
95         const struct nla_policy *slave_policy;
96         int                     (*slave_validate)(struct nlattr *tb[],
97                                                   struct nlattr *data[],
98                                                   struct netlink_ext_ack *extack);
99         int                     (*slave_changelink)(struct net_device *dev,
100                                                     struct net_device *slave_dev,
101                                                     struct nlattr *tb[],
102                                                     struct nlattr *data[],
103                                                     struct netlink_ext_ack *extack);
104         size_t                  (*get_slave_size)(const struct net_device *dev,
105                                                   const struct net_device *slave_dev);
106         int                     (*fill_slave_info)(struct sk_buff *skb,
107                                                    const struct net_device *dev,
108                                                    const struct net_device *slave_dev);
109         struct net              *(*get_link_net)(const struct net_device *dev);
110         size_t                  (*get_linkxstats_size)(const struct net_device *dev,
111                                                        int attr);
112         int                     (*fill_linkxstats)(struct sk_buff *skb,
113                                                    const struct net_device *dev,
114                                                    int *prividx, int attr);
115 };
116
117 int __rtnl_link_register(struct rtnl_link_ops *ops);
118 void __rtnl_link_unregister(struct rtnl_link_ops *ops);
119
120 int rtnl_link_register(struct rtnl_link_ops *ops);
121 void rtnl_link_unregister(struct rtnl_link_ops *ops);
122
123 /**
124  *      struct rtnl_af_ops - rtnetlink address family operations
125  *
126  *      @list: Used internally
127  *      @family: Address family
128  *      @fill_link_af: Function to fill IFLA_AF_SPEC with address family
129  *                     specific netlink attributes.
130  *      @get_link_af_size: Function to calculate size of address family specific
131  *                         netlink attributes.
132  *      @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
133  *                         for invalid configuration settings.
134  *      @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
135  *                    net_device accordingly.
136  */
137 struct rtnl_af_ops {
138         struct list_head        list;
139         int                     family;
140
141         int                     (*fill_link_af)(struct sk_buff *skb,
142                                                 const struct net_device *dev,
143                                                 u32 ext_filter_mask);
144         size_t                  (*get_link_af_size)(const struct net_device *dev,
145                                                     u32 ext_filter_mask);
146
147         int                     (*validate_link_af)(const struct net_device *dev,
148                                                     const struct nlattr *attr);
149         int                     (*set_link_af)(struct net_device *dev,
150                                                const struct nlattr *attr);
151
152         int                     (*fill_stats_af)(struct sk_buff *skb,
153                                                  const struct net_device *dev);
154         size_t                  (*get_stats_af_size)(const struct net_device *dev);
155 };
156
157 void __rtnl_af_unregister(struct rtnl_af_ops *ops);
158
159 void rtnl_af_register(struct rtnl_af_ops *ops);
160 void rtnl_af_unregister(struct rtnl_af_ops *ops);
161
162 struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
163 struct net_device *rtnl_create_link(struct net *net, const char *ifname,
164                                     unsigned char name_assign_type,
165                                     const struct rtnl_link_ops *ops,
166                                     struct nlattr *tb[]);
167 int rtnl_delete_link(struct net_device *dev);
168 int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm);
169
170 int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len,
171                         struct netlink_ext_ack *exterr);
172
173 #define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
174
175 #endif