Current File : //usr/src/kernels/3.10.0-957.21.3.el7.centos.plus.x86_64/include/net/rtnetlink.h
#ifndef __NET_RTNETLINK_H
#define __NET_RTNETLINK_H
#include <linux/rtnetlink.h>
#include <net/netlink.h>
#include <linux/rh_kabi.h>
typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *);
typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
typedef u16 (*rtnl_calcit_func)(struct sk_buff *, struct nlmsghdr *);
int __rtnl_register(int protocol, int msgtype,
rtnl_doit_func, rtnl_dumpit_func, rtnl_calcit_func);
void rtnl_register(int protocol, int msgtype,
rtnl_doit_func, rtnl_dumpit_func, rtnl_calcit_func);
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;
}
/*
* RHEL specific: Forward declaration of structure nla_policy that is used
* in RHEL 7.4 and earlier.
* For more details see the explanation in __rtnl_link_register() in
* net/core/rtnetlink.c
*/
struct nla_policy_rh74;
/**
* 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);
int maxtype;
RH_KABI_REPLACE(const struct nla_policy *policy,
const struct nla_policy_rh74 *policy_rh74)
int (*validate)(struct nlattr *tb[],
struct nlattr *data[]);
int (*newlink)(struct net *src_net,
struct net_device *dev,
struct nlattr *tb[],
struct nlattr *data[]);
int (*changelink)(struct net_device *dev,
struct nlattr *tb[],
struct nlattr *data[]);
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);
unsigned int (*get_num_rx_queues)(void);
/* RHEL SPECIFIC
*
* The following padding has been inserted before ABI freeze to
* allow extending the structure while preserve ABI. Feel free
* to replace reserved slots with required structure field
* additions of your backport.
*/
RH_KABI_USE_P(1, struct net *(*get_link_net)(const struct net_device *dev))
RH_KABI_USE_P(2, int slave_maxtype)
RH_KABI_USE_P(3, const struct nla_policy_rh74 *slave_policy_rh74)
RH_KABI_USE_P(4, int (*slave_validate)(struct nlattr *tb[], struct nlattr *data[]))
RH_KABI_USE_P(5, int (*slave_changelink)(struct net_device *dev,
struct net_device *slave_dev,
struct nlattr *tb[], struct nlattr *data[]))
RH_KABI_USE_P(6, size_t (*get_slave_size)(const struct net_device *dev,
const struct net_device *slave_dev))
RH_KABI_USE_P(7, int (*fill_slave_info)(struct sk_buff *skb,
const struct net_device *dev,
const struct net_device *slave_dev))
RH_KABI_USE_P(8, size_t (*get_linkxstats_size)(const struct net_device *dev,
int attr))
RH_KABI_USE_P(9, int (*fill_linkxstats)(struct sk_buff *skb,
const struct net_device *dev,
int *prividx, int attr))
RH_KABI_USE_P(10, const struct nla_policy *policy)
RH_KABI_USE_P(11, const struct nla_policy *slave_policy)
RH_KABI_RESERVE_P(12)
RH_KABI_RESERVE_P(13)
RH_KABI_RESERVE_P(14)
RH_KABI_RESERVE_P(15)
RH_KABI_RESERVE_P(16)
};
int __rtnl_link_register(struct rtnl_link_ops *ops);
void __rtnl_link_unregister(struct rtnl_link_ops *ops);
int rtnl_link_register(struct rtnl_link_ops *ops);
void rtnl_link_unregister(struct rtnl_link_ops *ops);
/**
* struct rtnl_af_ops - rtnetlink address family operations
*
* @list: Used internally
* @family: Address family
* @fill_link_af: Function to fill IFLA_AF_SPEC with address family
* specific netlink attributes.
* @get_link_af_size: Function to calculate size of address family specific
* netlink attributes.
* @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
* for invalid configuration settings.
* @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
* net_device accordingly.
*/
struct rtnl_af_ops {
struct list_head list;
int family;
int (*fill_link_af)(struct sk_buff *skb,
const struct net_device *dev);
size_t (*get_link_af_size)(const struct net_device *dev,
u32 ext_filter_mask);
int (*validate_link_af)(const struct net_device *dev,
const struct nlattr *attr);
int (*set_link_af)(struct net_device *dev,
const struct nlattr *attr);
};
void __rtnl_af_unregister(struct rtnl_af_ops *ops);
void rtnl_af_register(struct rtnl_af_ops *ops);
void rtnl_af_unregister(struct rtnl_af_ops *ops);
struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
struct net_device *rtnl_create_link(struct net *net, const char *ifname,
const struct rtnl_link_ops *ops,
struct nlattr *tb[]);
int rtnl_delete_link(struct net_device *dev);
int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm);
int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len);
#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
#endif
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