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 | 12 | enum rtnl_link_flags { |
a6cec0bc NA |
13 | RTNL_FLAG_DOIT_UNLOCKED = BIT(0), |
14 | RTNL_FLAG_BULK_DEL_SUPPORTED = BIT(1), | |
62256f98 FW |
15 | }; |
16 | ||
12dc5c2c NA |
17 | enum rtnl_kinds { |
18 | RTNL_KIND_NEW, | |
19 | RTNL_KIND_DEL, | |
20 | RTNL_KIND_GET, | |
21 | RTNL_KIND_SET | |
22 | }; | |
2e9ea3e3 NA |
23 | #define RTNL_KIND_MASK 0x3 |
24 | ||
25 | static inline enum rtnl_kinds rtnl_msgtype_kind(int msgtype) | |
26 | { | |
27 | return msgtype & RTNL_KIND_MASK; | |
28 | } | |
12dc5c2c | 29 | |
efb48ccf | 30 | void rtnl_register(int protocol, int msgtype, |
b97bac64 | 31 | rtnl_doit_func, rtnl_dumpit_func, unsigned int flags); |
e4202511 FW |
32 | int rtnl_register_module(struct module *owner, int protocol, int msgtype, |
33 | rtnl_doit_func, rtnl_dumpit_func, unsigned int flags); | |
efb48ccf JP |
34 | int rtnl_unregister(int protocol, int msgtype); |
35 | void rtnl_unregister_all(int protocol); | |
e2849863 | 36 | |
3a6c2b41 | 37 | static inline int rtnl_msg_family(const struct nlmsghdr *nlh) |
c454673d TG |
38 | { |
39 | if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg)) | |
40 | return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family; | |
41 | else | |
42 | return AF_UNSPEC; | |
43 | } | |
44 | ||
38f7b870 PM |
45 | /** |
46 | * struct rtnl_link_ops - rtnetlink link operations | |
47 | * | |
48 | * @list: Used internally | |
49 | * @kind: Identifier | |
3a5ca857 | 50 | * @netns_refund: Physical device, move to init_net on netns exit |
38f7b870 PM |
51 | * @maxtype: Highest device specific netlink attribute number |
52 | * @policy: Netlink policy for device specific attribute validation | |
53 | * @validate: Optional validation function for netlink/changelink parameters | |
8c713dc9 JB |
54 | * @alloc: netdev allocation function, can be %NULL and is then used |
55 | * in place of alloc_netdev_mqs(), in this case @priv_size | |
56 | * and @setup are unused. Returns a netdev or ERR_PTR(). | |
38f7b870 PM |
57 | * @priv_size: sizeof net_device private space |
58 | * @setup: net_device setup function | |
59 | * @newlink: Function for configuring and registering a new device | |
60 | * @changelink: Function for changing parameters of an existing device | |
61 | * @dellink: Function to remove a device | |
62 | * @get_size: Function to calculate required room for dumping device | |
63 | * specific netlink attributes | |
64 | * @fill_info: Function to dump device specific netlink attributes | |
9b17876f | 65 | * @get_xstats_size: Function to calculate required room for dumping device |
38f7b870 PM |
66 | * specific statistics |
67 | * @fill_xstats: Function to dump device specific statistics | |
d40156aa JP |
68 | * @get_num_tx_queues: Function to determine number of transmit queues |
69 | * to create when creating a new device. | |
70 | * @get_num_rx_queues: Function to determine number of receive queues | |
71 | * to create when creating a new device. | |
d37512a2 | 72 | * @get_link_net: Function to get the i/o netns of the device |
97a47fac NA |
73 | * @get_linkxstats_size: Function to calculate the required room for |
74 | * dumping device-specific extended link stats | |
75 | * @fill_linkxstats: Function to dump device-specific extended link stats | |
38f7b870 PM |
76 | */ |
77 | struct rtnl_link_ops { | |
78 | struct list_head list; | |
79 | ||
80 | const char *kind; | |
81 | ||
82 | size_t priv_size; | |
8c713dc9 JB |
83 | struct net_device *(*alloc)(struct nlattr *tb[], |
84 | const char *ifname, | |
85 | unsigned char name_assign_type, | |
86 | unsigned int num_tx_queues, | |
87 | unsigned int num_rx_queues); | |
38f7b870 PM |
88 | void (*setup)(struct net_device *dev); |
89 | ||
3a5ca857 | 90 | bool netns_refund; |
ccf8dbcd | 91 | unsigned int maxtype; |
38f7b870 PM |
92 | const struct nla_policy *policy; |
93 | int (*validate)(struct nlattr *tb[], | |
a8b8a889 MS |
94 | struct nlattr *data[], |
95 | struct netlink_ext_ack *extack); | |
38f7b870 | 96 | |
81adee47 EB |
97 | int (*newlink)(struct net *src_net, |
98 | struct net_device *dev, | |
38f7b870 | 99 | struct nlattr *tb[], |
7a3f4a18 MS |
100 | struct nlattr *data[], |
101 | struct netlink_ext_ack *extack); | |
38f7b870 PM |
102 | int (*changelink)(struct net_device *dev, |
103 | struct nlattr *tb[], | |
ad744b22 MS |
104 | struct nlattr *data[], |
105 | struct netlink_ext_ack *extack); | |
23289a37 ED |
106 | void (*dellink)(struct net_device *dev, |
107 | struct list_head *head); | |
38f7b870 PM |
108 | |
109 | size_t (*get_size)(const struct net_device *dev); | |
110 | int (*fill_info)(struct sk_buff *skb, | |
111 | const struct net_device *dev); | |
112 | ||
113 | size_t (*get_xstats_size)(const struct net_device *dev); | |
114 | int (*fill_xstats)(struct sk_buff *skb, | |
115 | const struct net_device *dev); | |
d40156aa JP |
116 | unsigned int (*get_num_tx_queues)(void); |
117 | unsigned int (*get_num_rx_queues)(void); | |
ba7d49b1 | 118 | |
ccf8dbcd | 119 | unsigned int slave_maxtype; |
ba7d49b1 | 120 | const struct nla_policy *slave_policy; |
ba7d49b1 JP |
121 | int (*slave_changelink)(struct net_device *dev, |
122 | struct net_device *slave_dev, | |
123 | struct nlattr *tb[], | |
17dd0ec4 MS |
124 | struct nlattr *data[], |
125 | struct netlink_ext_ack *extack); | |
ba7d49b1 JP |
126 | size_t (*get_slave_size)(const struct net_device *dev, |
127 | const struct net_device *slave_dev); | |
128 | int (*fill_slave_info)(struct sk_buff *skb, | |
129 | const struct net_device *dev, | |
130 | const struct net_device *slave_dev); | |
d37512a2 | 131 | struct net *(*get_link_net)(const struct net_device *dev); |
80e73cc5 NA |
132 | size_t (*get_linkxstats_size)(const struct net_device *dev, |
133 | int attr); | |
97a47fac NA |
134 | int (*fill_linkxstats)(struct sk_buff *skb, |
135 | const struct net_device *dev, | |
80e73cc5 | 136 | int *prividx, int attr); |
38f7b870 PM |
137 | }; |
138 | ||
efb48ccf JP |
139 | int __rtnl_link_register(struct rtnl_link_ops *ops); |
140 | void __rtnl_link_unregister(struct rtnl_link_ops *ops); | |
38f7b870 | 141 | |
efb48ccf JP |
142 | int rtnl_link_register(struct rtnl_link_ops *ops); |
143 | void rtnl_link_unregister(struct rtnl_link_ops *ops); | |
38f7b870 | 144 | |
f8ff182c TG |
145 | /** |
146 | * struct rtnl_af_ops - rtnetlink address family operations | |
147 | * | |
148 | * @list: Used internally | |
149 | * @family: Address family | |
150 | * @fill_link_af: Function to fill IFLA_AF_SPEC with address family | |
151 | * specific netlink attributes. | |
152 | * @get_link_af_size: Function to calculate size of address family specific | |
9b17876f | 153 | * netlink attributes. |
cf7afbfe TG |
154 | * @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr |
155 | * for invalid configuration settings. | |
156 | * @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify | |
157 | * net_device accordingly. | |
f8ff182c TG |
158 | */ |
159 | struct rtnl_af_ops { | |
160 | struct list_head list; | |
161 | int family; | |
162 | ||
163 | int (*fill_link_af)(struct sk_buff *skb, | |
d5566fd7 SV |
164 | const struct net_device *dev, |
165 | u32 ext_filter_mask); | |
b1974ed0 AR |
166 | size_t (*get_link_af_size)(const struct net_device *dev, |
167 | u32 ext_filter_mask); | |
f8ff182c | 168 | |
cf7afbfe | 169 | int (*validate_link_af)(const struct net_device *dev, |
8679c31e RY |
170 | const struct nlattr *attr, |
171 | struct netlink_ext_ack *extack); | |
cf7afbfe | 172 | int (*set_link_af)(struct net_device *dev, |
3583a4e8 SH |
173 | const struct nlattr *attr, |
174 | struct netlink_ext_ack *extack); | |
aefb4d4a RS |
175 | int (*fill_stats_af)(struct sk_buff *skb, |
176 | const struct net_device *dev); | |
177 | size_t (*get_stats_af_size)(const struct net_device *dev); | |
f8ff182c TG |
178 | }; |
179 | ||
3678a9d8 | 180 | void rtnl_af_register(struct rtnl_af_ops *ops); |
efb48ccf | 181 | void rtnl_af_unregister(struct rtnl_af_ops *ops); |
f8ff182c | 182 | |
efb48ccf | 183 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]); |
78ebb0d0 | 184 | struct net_device *rtnl_create_link(struct net *net, const char *ifname, |
5517750f | 185 | unsigned char name_assign_type, |
efb48ccf | 186 | const struct rtnl_link_ops *ops, |
d0522f1c DA |
187 | struct nlattr *tb[], |
188 | struct netlink_ext_ack *extack); | |
f3a63cce | 189 | int rtnl_delete_link(struct net_device *dev, u32 portid, const struct nlmsghdr *nlh); |
1d997f10 HL |
190 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm, |
191 | u32 portid, const struct nlmsghdr *nlh); | |
f8ff182c | 192 | |
fceb6435 JB |
193 | int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len, |
194 | struct netlink_ext_ack *exterr); | |
c383edc4 | 195 | struct net *rtnl_get_net_ns_capable(struct sock *sk, int netnsid); |
e7199288 | 196 | |
38f7b870 PM |
197 | #define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind) |
198 | ||
e2849863 | 199 | #endif |