Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
e2849863 TG |
2 | #ifndef __NET_RTNETLINK_H |
3 | #define __NET_RTNETLINK_H | |
4 | ||
5 | #include <linux/rtnetlink.h> | |
6 | #include <net/netlink.h> | |
7 | ||
c21ef3e3 DA |
8 | typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, |
9 | struct netlink_ext_ack *); | |
e2849863 TG |
10 | typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *); |
11 | ||
62256f98 FW |
12 | enum rtnl_link_flags { |
13 | RTNL_FLAG_DOIT_UNLOCKED = 1, | |
14 | }; | |
15 | ||
efb48ccf | 16 | void rtnl_register(int protocol, int msgtype, |
b97bac64 | 17 | rtnl_doit_func, rtnl_dumpit_func, unsigned int flags); |
e4202511 FW |
18 | int rtnl_register_module(struct module *owner, int protocol, int msgtype, |
19 | rtnl_doit_func, rtnl_dumpit_func, unsigned int flags); | |
efb48ccf JP |
20 | int rtnl_unregister(int protocol, int msgtype); |
21 | void rtnl_unregister_all(int protocol); | |
e2849863 | 22 | |
3a6c2b41 | 23 | static inline int rtnl_msg_family(const struct nlmsghdr *nlh) |
c454673d TG |
24 | { |
25 | if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg)) | |
26 | return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family; | |
27 | else | |
28 | return AF_UNSPEC; | |
29 | } | |
30 | ||
38f7b870 PM |
31 | /** |
32 | * struct rtnl_link_ops - rtnetlink link operations | |
33 | * | |
34 | * @list: Used internally | |
35 | * @kind: Identifier | |
36 | * @maxtype: Highest device specific netlink attribute number | |
37 | * @policy: Netlink policy for device specific attribute validation | |
38 | * @validate: Optional validation function for netlink/changelink parameters | |
39 | * @priv_size: sizeof net_device private space | |
40 | * @setup: net_device setup function | |
41 | * @newlink: Function for configuring and registering a new device | |
42 | * @changelink: Function for changing parameters of an existing device | |
43 | * @dellink: Function to remove a device | |
44 | * @get_size: Function to calculate required room for dumping device | |
45 | * specific netlink attributes | |
46 | * @fill_info: Function to dump device specific netlink attributes | |
9b17876f | 47 | * @get_xstats_size: Function to calculate required room for dumping device |
38f7b870 PM |
48 | * specific statistics |
49 | * @fill_xstats: Function to dump device specific statistics | |
d40156aa JP |
50 | * @get_num_tx_queues: Function to determine number of transmit queues |
51 | * to create when creating a new device. | |
52 | * @get_num_rx_queues: Function to determine number of receive queues | |
53 | * to create when creating a new device. | |
d37512a2 | 54 | * @get_link_net: Function to get the i/o netns of the device |
97a47fac NA |
55 | * @get_linkxstats_size: Function to calculate the required room for |
56 | * dumping device-specific extended link stats | |
57 | * @fill_linkxstats: Function to dump device-specific extended link stats | |
38f7b870 PM |
58 | */ |
59 | struct rtnl_link_ops { | |
60 | struct list_head list; | |
61 | ||
62 | const char *kind; | |
63 | ||
64 | size_t priv_size; | |
65 | void (*setup)(struct net_device *dev); | |
66 | ||
ccf8dbcd | 67 | unsigned int maxtype; |
38f7b870 PM |
68 | const struct nla_policy *policy; |
69 | int (*validate)(struct nlattr *tb[], | |
a8b8a889 MS |
70 | struct nlattr *data[], |
71 | struct netlink_ext_ack *extack); | |
38f7b870 | 72 | |
81adee47 EB |
73 | int (*newlink)(struct net *src_net, |
74 | struct net_device *dev, | |
38f7b870 | 75 | struct nlattr *tb[], |
7a3f4a18 MS |
76 | struct nlattr *data[], |
77 | struct netlink_ext_ack *extack); | |
38f7b870 PM |
78 | int (*changelink)(struct net_device *dev, |
79 | struct nlattr *tb[], | |
ad744b22 MS |
80 | struct nlattr *data[], |
81 | struct netlink_ext_ack *extack); | |
23289a37 ED |
82 | void (*dellink)(struct net_device *dev, |
83 | struct list_head *head); | |
38f7b870 PM |
84 | |
85 | size_t (*get_size)(const struct net_device *dev); | |
86 | int (*fill_info)(struct sk_buff *skb, | |
87 | const struct net_device *dev); | |
88 | ||
89 | size_t (*get_xstats_size)(const struct net_device *dev); | |
90 | int (*fill_xstats)(struct sk_buff *skb, | |
91 | const struct net_device *dev); | |
d40156aa JP |
92 | unsigned int (*get_num_tx_queues)(void); |
93 | unsigned int (*get_num_rx_queues)(void); | |
ba7d49b1 | 94 | |
ccf8dbcd | 95 | unsigned int slave_maxtype; |
ba7d49b1 | 96 | const struct nla_policy *slave_policy; |
ba7d49b1 JP |
97 | int (*slave_changelink)(struct net_device *dev, |
98 | struct net_device *slave_dev, | |
99 | struct nlattr *tb[], | |
17dd0ec4 MS |
100 | struct nlattr *data[], |
101 | struct netlink_ext_ack *extack); | |
ba7d49b1 JP |
102 | size_t (*get_slave_size)(const struct net_device *dev, |
103 | const struct net_device *slave_dev); | |
104 | int (*fill_slave_info)(struct sk_buff *skb, | |
105 | const struct net_device *dev, | |
106 | const struct net_device *slave_dev); | |
d37512a2 | 107 | struct net *(*get_link_net)(const struct net_device *dev); |
80e73cc5 NA |
108 | size_t (*get_linkxstats_size)(const struct net_device *dev, |
109 | int attr); | |
97a47fac NA |
110 | int (*fill_linkxstats)(struct sk_buff *skb, |
111 | const struct net_device *dev, | |
80e73cc5 | 112 | int *prividx, int attr); |
38f7b870 PM |
113 | }; |
114 | ||
efb48ccf JP |
115 | int __rtnl_link_register(struct rtnl_link_ops *ops); |
116 | void __rtnl_link_unregister(struct rtnl_link_ops *ops); | |
38f7b870 | 117 | |
efb48ccf JP |
118 | int rtnl_link_register(struct rtnl_link_ops *ops); |
119 | void rtnl_link_unregister(struct rtnl_link_ops *ops); | |
38f7b870 | 120 | |
f8ff182c TG |
121 | /** |
122 | * struct rtnl_af_ops - rtnetlink address family operations | |
123 | * | |
124 | * @list: Used internally | |
125 | * @family: Address family | |
126 | * @fill_link_af: Function to fill IFLA_AF_SPEC with address family | |
127 | * specific netlink attributes. | |
128 | * @get_link_af_size: Function to calculate size of address family specific | |
9b17876f | 129 | * netlink attributes. |
cf7afbfe TG |
130 | * @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr |
131 | * for invalid configuration settings. | |
132 | * @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify | |
133 | * net_device accordingly. | |
f8ff182c TG |
134 | */ |
135 | struct rtnl_af_ops { | |
136 | struct list_head list; | |
137 | int family; | |
138 | ||
139 | int (*fill_link_af)(struct sk_buff *skb, | |
d5566fd7 SV |
140 | const struct net_device *dev, |
141 | u32 ext_filter_mask); | |
b1974ed0 AR |
142 | size_t (*get_link_af_size)(const struct net_device *dev, |
143 | u32 ext_filter_mask); | |
f8ff182c | 144 | |
cf7afbfe TG |
145 | int (*validate_link_af)(const struct net_device *dev, |
146 | const struct nlattr *attr); | |
147 | int (*set_link_af)(struct net_device *dev, | |
148 | const struct nlattr *attr); | |
aefb4d4a RS |
149 | |
150 | int (*fill_stats_af)(struct sk_buff *skb, | |
151 | const struct net_device *dev); | |
152 | size_t (*get_stats_af_size)(const struct net_device *dev); | |
f8ff182c TG |
153 | }; |
154 | ||
3678a9d8 | 155 | void rtnl_af_register(struct rtnl_af_ops *ops); |
efb48ccf | 156 | void rtnl_af_unregister(struct rtnl_af_ops *ops); |
f8ff182c | 157 | |
efb48ccf | 158 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]); |
78ebb0d0 | 159 | struct net_device *rtnl_create_link(struct net *net, const char *ifname, |
5517750f | 160 | unsigned char name_assign_type, |
efb48ccf | 161 | const struct rtnl_link_ops *ops, |
d0522f1c DA |
162 | struct nlattr *tb[], |
163 | struct netlink_ext_ack *extack); | |
614732ea | 164 | int rtnl_delete_link(struct net_device *dev); |
efb48ccf | 165 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm); |
f8ff182c | 166 | |
fceb6435 JB |
167 | int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len, |
168 | struct netlink_ext_ack *exterr); | |
c383edc4 | 169 | struct net *rtnl_get_net_ns_capable(struct sock *sk, int netnsid); |
e7199288 | 170 | |
38f7b870 PM |
171 | #define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind) |
172 | ||
e2849863 | 173 | #endif |