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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - include/net/rtnetlink.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __NET_RTNETLINK_H
3 #define __NET_RTNETLINK_H
5 #include <linux/rtnetlink.h>
6 #include <net/netlink.h>
8 typedef int (*rtnl_doit_func
)(struct sk_buff
*, struct nlmsghdr
*,
9 struct netlink_ext_ack
*);
10 typedef int (*rtnl_dumpit_func
)(struct sk_buff
*, struct netlink_callback
*);
12 enum rtnl_link_flags
{
13 RTNL_FLAG_DOIT_UNLOCKED
= 1,
16 void rtnl_register(int protocol
, int msgtype
,
17 rtnl_doit_func
, rtnl_dumpit_func
, unsigned int flags
);
18 int rtnl_register_module(struct module
*owner
, int protocol
, int msgtype
,
19 rtnl_doit_func
, rtnl_dumpit_func
, unsigned int flags
);
20 int rtnl_unregister(int protocol
, int msgtype
);
21 void rtnl_unregister_all(int protocol
);
23 static inline int rtnl_msg_family(const struct nlmsghdr
*nlh
)
25 if (nlmsg_len(nlh
) >= sizeof(struct rtgenmsg
))
26 return ((struct rtgenmsg
*) nlmsg_data(nlh
))->rtgen_family
;
32 * struct rtnl_link_ops - rtnetlink link operations
34 * @list: Used internally
36 * @netns_refund: Physical device, move to init_net on netns exit
37 * @maxtype: Highest device specific netlink attribute number
38 * @policy: Netlink policy for device specific attribute validation
39 * @validate: Optional validation function for netlink/changelink parameters
40 * @alloc: netdev allocation function, can be %NULL and is then used
41 * in place of alloc_netdev_mqs(), in this case @priv_size
42 * and @setup are unused. Returns a netdev or ERR_PTR().
43 * @priv_size: sizeof net_device private space
44 * @setup: net_device setup function
45 * @newlink: Function for configuring and registering a new device
46 * @changelink: Function for changing parameters of an existing device
47 * @dellink: Function to remove a device
48 * @get_size: Function to calculate required room for dumping device
49 * specific netlink attributes
50 * @fill_info: Function to dump device specific netlink attributes
51 * @get_xstats_size: Function to calculate required room for dumping device
53 * @fill_xstats: Function to dump device specific statistics
54 * @get_num_tx_queues: Function to determine number of transmit queues
55 * to create when creating a new device.
56 * @get_num_rx_queues: Function to determine number of receive queues
57 * to create when creating a new device.
58 * @get_link_net: Function to get the i/o netns of the device
59 * @get_linkxstats_size: Function to calculate the required room for
60 * dumping device-specific extended link stats
61 * @fill_linkxstats: Function to dump device-specific extended link stats
63 struct rtnl_link_ops
{
64 struct list_head list
;
69 struct net_device
*(*alloc
)(struct nlattr
*tb
[],
71 unsigned char name_assign_type
,
72 unsigned int num_tx_queues
,
73 unsigned int num_rx_queues
);
74 void (*setup
)(struct net_device
*dev
);
78 const struct nla_policy
*policy
;
79 int (*validate
)(struct nlattr
*tb
[],
80 struct nlattr
*data
[],
81 struct netlink_ext_ack
*extack
);
83 int (*newlink
)(struct net
*src_net
,
84 struct net_device
*dev
,
86 struct nlattr
*data
[],
87 struct netlink_ext_ack
*extack
);
88 int (*changelink
)(struct net_device
*dev
,
90 struct nlattr
*data
[],
91 struct netlink_ext_ack
*extack
);
92 void (*dellink
)(struct net_device
*dev
,
93 struct list_head
*head
);
95 size_t (*get_size
)(const struct net_device
*dev
);
96 int (*fill_info
)(struct sk_buff
*skb
,
97 const struct net_device
*dev
);
99 size_t (*get_xstats_size
)(const struct net_device
*dev
);
100 int (*fill_xstats
)(struct sk_buff
*skb
,
101 const struct net_device
*dev
);
102 unsigned int (*get_num_tx_queues
)(void);
103 unsigned int (*get_num_rx_queues
)(void);
105 unsigned int slave_maxtype
;
106 const struct nla_policy
*slave_policy
;
107 int (*slave_changelink
)(struct net_device
*dev
,
108 struct net_device
*slave_dev
,
110 struct nlattr
*data
[],
111 struct netlink_ext_ack
*extack
);
112 size_t (*get_slave_size
)(const struct net_device
*dev
,
113 const struct net_device
*slave_dev
);
114 int (*fill_slave_info
)(struct sk_buff
*skb
,
115 const struct net_device
*dev
,
116 const struct net_device
*slave_dev
);
117 struct net
*(*get_link_net
)(const struct net_device
*dev
);
118 size_t (*get_linkxstats_size
)(const struct net_device
*dev
,
120 int (*fill_linkxstats
)(struct sk_buff
*skb
,
121 const struct net_device
*dev
,
122 int *prividx
, int attr
);
125 int __rtnl_link_register(struct rtnl_link_ops
*ops
);
126 void __rtnl_link_unregister(struct rtnl_link_ops
*ops
);
128 int rtnl_link_register(struct rtnl_link_ops
*ops
);
129 void rtnl_link_unregister(struct rtnl_link_ops
*ops
);
132 * struct rtnl_af_ops - rtnetlink address family operations
134 * @list: Used internally
135 * @family: Address family
136 * @fill_link_af: Function to fill IFLA_AF_SPEC with address family
137 * specific netlink attributes.
138 * @get_link_af_size: Function to calculate size of address family specific
139 * netlink attributes.
140 * @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
141 * for invalid configuration settings.
142 * @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
143 * net_device accordingly.
146 struct list_head list
;
149 int (*fill_link_af
)(struct sk_buff
*skb
,
150 const struct net_device
*dev
,
151 u32 ext_filter_mask
);
152 size_t (*get_link_af_size
)(const struct net_device
*dev
,
153 u32 ext_filter_mask
);
155 int (*validate_link_af
)(const struct net_device
*dev
,
156 const struct nlattr
*attr
,
157 struct netlink_ext_ack
*extack
);
158 int (*set_link_af
)(struct net_device
*dev
,
159 const struct nlattr
*attr
,
160 struct netlink_ext_ack
*extack
);
161 int (*fill_stats_af
)(struct sk_buff
*skb
,
162 const struct net_device
*dev
);
163 size_t (*get_stats_af_size
)(const struct net_device
*dev
);
166 void rtnl_af_register(struct rtnl_af_ops
*ops
);
167 void rtnl_af_unregister(struct rtnl_af_ops
*ops
);
169 struct net
*rtnl_link_get_net(struct net
*src_net
, struct nlattr
*tb
[]);
170 struct net_device
*rtnl_create_link(struct net
*net
, const char *ifname
,
171 unsigned char name_assign_type
,
172 const struct rtnl_link_ops
*ops
,
174 struct netlink_ext_ack
*extack
);
175 int rtnl_delete_link(struct net_device
*dev
);
176 int rtnl_configure_link(struct net_device
*dev
, const struct ifinfomsg
*ifm
);
178 int rtnl_nla_parse_ifla(struct nlattr
**tb
, const struct nlattr
*head
, int len
,
179 struct netlink_ext_ack
*exterr
);
180 struct net
*rtnl_get_net_ns_capable(struct sock
*sk
, int netnsid
);
182 #define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)