linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __NET_RTNETLINK_H

#define __NET_RTNETLINK_H

​

#include <linux/rtnetlink.h>

#include <net/netlink.h>

​

typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *,

                  struct netlink_ext_ack *);

typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);

​

enum rtnl_link_flags {

    RTNL_FLAG_DOIT_UNLOCKED = 1,

};

​

void rtnl_register(int protocol, int msgtype,

           rtnl_doit_func, rtnl_dumpit_func, unsigned int flags);

int rtnl_register_module(struct module *owner, int protocol, int msgtype,

             rtnl_doit_func, rtnl_dumpit_func, unsigned int flags);

int rtnl_unregister(int protocol, int msgtype);

void rtnl_unregister_all(int protocol);

​

static inline int rtnl_msg_family(const struct nlmsghdr *nlh)

{

    if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))

        return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;

    else

        return AF_UNSPEC;

}

​

/**

 *  struct rtnl_link_ops - rtnetlink link operations

 *

 *  @list: Used internally

 *  @kind: Identifier

 *  @maxtype: Highest device specific netlink attribute number

 *  @policy: Netlink policy for device specific attribute validation

 *  @validate: Optional validation function for netlink/changelink parameters

 *  @priv_size: sizeof net_device private space

 *  @setup: net_device setup function

 *  @newlink: Function for configuring and registering a new device

 *  @changelink: Function for changing parameters of an existing device

 *  @dellink: Function to remove a device

 *  @get_size: Function to calculate required room for dumping device

 *         specific netlink attributes

 *  @fill_info: Function to dump device specific netlink attributes

 *  @get_xstats_size: Function to calculate required room for dumping device

 *            specific statistics

 *  @fill_xstats: Function to dump device specific statistics

 *  @get_num_tx_queues: Function to determine number of transmit queues

 *              to create when creating a new device.

 *  @get_num_rx_queues: Function to determine number of receive queues

 *              to create when creating a new device.

 *  @get_link_net: Function to get the i/o netns of the device

 *  @get_linkxstats_size: Function to calculate the required room for

 *                dumping device-specific extended link stats

 *  @fill_linkxstats: Function to dump device-specific extended link stats

 */

struct rtnl_link_ops {

    struct list_head    list;

​

    const char      *kind;

​

    size_t          priv_size;

    void            (*setup)(struct net_device *dev);

​

    unsigned int        maxtype;

    const struct nla_policy *policy;

    int         (*validate)(struct nlattr *tb[],

                        struct nlattr *data[],

                        struct netlink_ext_ack *extack);

​

    int         (*newlink)(struct net *src_net,

                       struct net_device *dev,

                       struct nlattr *tb[],

                       struct nlattr *data[],

                       struct netlink_ext_ack *extack);

    int         (*changelink)(struct net_device *dev,

                          struct nlattr *tb[],

                          struct nlattr *data[],

                          struct netlink_ext_ack *extack);

    void            (*dellink)(struct net_device *dev,

                       struct list_head *head);

​

    size_t          (*get_size)(const struct net_device *dev);

    int         (*fill_info)(struct sk_buff *skb,

                         const struct net_device *dev);

​

    size_t          (*get_xstats_size)(const struct net_device *dev);

    int         (*fill_xstats)(struct sk_buff *skb,

                           const struct net_device *dev);

    unsigned int        (*get_num_tx_queues)(void);