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175 lines
6.3 KiB
175 lines
6.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __NET_RTNETLINK_H |
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#define __NET_RTNETLINK_H |
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#include <linux/rtnetlink.h> |
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#include <net/netlink.h> |
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typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, |
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struct netlink_ext_ack *); |
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typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *); |
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enum rtnl_link_flags { |
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RTNL_FLAG_DOIT_UNLOCKED = 1, |
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}; |
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void rtnl_register(int protocol, int msgtype, |
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rtnl_doit_func, rtnl_dumpit_func, unsigned int flags); |
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int rtnl_register_module(struct module *owner, int protocol, int msgtype, |
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rtnl_doit_func, rtnl_dumpit_func, unsigned int flags); |
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int rtnl_unregister(int protocol, int msgtype); |
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void rtnl_unregister_all(int protocol); |
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static inline int rtnl_msg_family(const struct nlmsghdr *nlh) |
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{ |
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if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg)) |
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return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family; |
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else |
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return AF_UNSPEC; |
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} |
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/** |
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* struct rtnl_link_ops - rtnetlink link operations |
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* |
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* @list: Used internally |
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* @kind: Identifier |
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* @netns_refund: Physical device, move to init_net on netns exit |
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* @maxtype: Highest device specific netlink attribute number |
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* @policy: Netlink policy for device specific attribute validation |
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* @validate: Optional validation function for netlink/changelink parameters |
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* @priv_size: sizeof net_device private space |
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* @setup: net_device setup function |
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* @newlink: Function for configuring and registering a new device |
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* @changelink: Function for changing parameters of an existing device |
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* @dellink: Function to remove a device |
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* @get_size: Function to calculate required room for dumping device |
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* specific netlink attributes |
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* @fill_info: Function to dump device specific netlink attributes |
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* @get_xstats_size: Function to calculate required room for dumping device |
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* specific statistics |
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* @fill_xstats: Function to dump device specific statistics |
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* @get_num_tx_queues: Function to determine number of transmit queues |
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* to create when creating a new device. |
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* @get_num_rx_queues: Function to determine number of receive queues |
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* to create when creating a new device. |
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* @get_link_net: Function to get the i/o netns of the device |
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* @get_linkxstats_size: Function to calculate the required room for |
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* dumping device-specific extended link stats |
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* @fill_linkxstats: Function to dump device-specific extended link stats |
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*/ |
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struct rtnl_link_ops { |
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struct list_head list; |
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const char *kind; |
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size_t priv_size; |
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void (*setup)(struct net_device *dev); |
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bool netns_refund; |
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unsigned int maxtype; |
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const struct nla_policy *policy; |
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int (*validate)(struct nlattr *tb[], |
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struct nlattr *data[], |
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struct netlink_ext_ack *extack); |
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int (*newlink)(struct net *src_net, |
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struct net_device *dev, |
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struct nlattr *tb[], |
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struct nlattr *data[], |
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struct netlink_ext_ack *extack); |
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int (*changelink)(struct net_device *dev, |
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struct nlattr *tb[], |
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struct nlattr *data[], |
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struct netlink_ext_ack *extack); |
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void (*dellink)(struct net_device *dev, |
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struct list_head *head); |
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size_t (*get_size)(const struct net_device *dev); |
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int (*fill_info)(struct sk_buff *skb, |
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const struct net_device *dev); |
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size_t (*get_xstats_size)(const struct net_device *dev); |
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int (*fill_xstats)(struct sk_buff *skb, |
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const struct net_device *dev); |
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unsigned int (*get_num_tx_queues)(void); |
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unsigned int (*get_num_rx_queues)(void); |
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unsigned int slave_maxtype; |
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const struct nla_policy *slave_policy; |
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int (*slave_changelink)(struct net_device *dev, |
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struct net_device *slave_dev, |
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struct nlattr *tb[], |
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struct nlattr *data[], |
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struct netlink_ext_ack *extack); |
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size_t (*get_slave_size)(const struct net_device *dev, |
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const struct net_device *slave_dev); |
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int (*fill_slave_info)(struct sk_buff *skb, |
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const struct net_device *dev, |
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const struct net_device *slave_dev); |
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struct net *(*get_link_net)(const struct net_device *dev); |
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size_t (*get_linkxstats_size)(const struct net_device *dev, |
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int attr); |
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int (*fill_linkxstats)(struct sk_buff *skb, |
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const struct net_device *dev, |
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int *prividx, int attr); |
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}; |
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int __rtnl_link_register(struct rtnl_link_ops *ops); |
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void __rtnl_link_unregister(struct rtnl_link_ops *ops); |
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int rtnl_link_register(struct rtnl_link_ops *ops); |
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void rtnl_link_unregister(struct rtnl_link_ops *ops); |
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/** |
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* struct rtnl_af_ops - rtnetlink address family operations |
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* |
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* @list: Used internally |
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* @family: Address family |
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* @fill_link_af: Function to fill IFLA_AF_SPEC with address family |
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* specific netlink attributes. |
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* @get_link_af_size: Function to calculate size of address family specific |
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* netlink attributes. |
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* @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr |
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* for invalid configuration settings. |
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* @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify |
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* net_device accordingly. |
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*/ |
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struct rtnl_af_ops { |
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struct list_head list; |
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int family; |
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int (*fill_link_af)(struct sk_buff *skb, |
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const struct net_device *dev, |
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u32 ext_filter_mask); |
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size_t (*get_link_af_size)(const struct net_device *dev, |
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u32 ext_filter_mask); |
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int (*validate_link_af)(const struct net_device *dev, |
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const struct nlattr *attr); |
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int (*set_link_af)(struct net_device *dev, |
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const struct nlattr *attr, |
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struct netlink_ext_ack *extack); |
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int (*fill_stats_af)(struct sk_buff *skb, |
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const struct net_device *dev); |
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size_t (*get_stats_af_size)(const struct net_device *dev); |
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}; |
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void rtnl_af_register(struct rtnl_af_ops *ops); |
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void rtnl_af_unregister(struct rtnl_af_ops *ops); |
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struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]); |
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struct net_device *rtnl_create_link(struct net *net, const char *ifname, |
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unsigned char name_assign_type, |
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const struct rtnl_link_ops *ops, |
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struct nlattr *tb[], |
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struct netlink_ext_ack *extack); |
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int rtnl_delete_link(struct net_device *dev); |
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int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm); |
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int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len, |
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struct netlink_ext_ack *exterr); |
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struct net *rtnl_get_net_ns_capable(struct sock *sk, int netnsid); |
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#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind) |
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#endif
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