| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __LINUX_RTNETLINK_H |
| #define __LINUX_RTNETLINK_H |
| |
| |
| #include <linux/mutex.h> |
| #include <linux/netdevice.h> |
| #include <linux/wait.h> |
| #include <linux/refcount.h> |
| #include <uapi/linux/rtnetlink.h> |
| |
| extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo); |
| extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid); |
| extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, |
| u32 group, struct nlmsghdr *nlh, gfp_t flags); |
| extern void rtnl_set_sk_err(struct net *net, u32 group, int error); |
| extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics); |
| extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, |
| u32 id, long expires, u32 error); |
| |
| void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change, gfp_t flags); |
| void rtmsg_ifinfo_newnet(int type, struct net_device *dev, unsigned int change, |
| gfp_t flags, int *new_nsid, int new_ifindex); |
| struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev, |
| unsigned change, u32 event, |
| gfp_t flags, int *new_nsid, |
| int new_ifindex); |
| void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, |
| gfp_t flags); |
| |
| |
| /* RTNL is used as a global lock for all changes to network configuration */ |
| extern void rtnl_lock(void); |
| extern void rtnl_unlock(void); |
| extern int rtnl_trylock(void); |
| extern int rtnl_is_locked(void); |
| extern int rtnl_lock_killable(void); |
| extern bool refcount_dec_and_rtnl_lock(refcount_t *r); |
| |
| extern wait_queue_head_t netdev_unregistering_wq; |
| extern struct rw_semaphore pernet_ops_rwsem; |
| extern struct rw_semaphore net_rwsem; |
| |
| #ifdef CONFIG_PROVE_LOCKING |
| extern bool lockdep_rtnl_is_held(void); |
| #else |
| static inline bool lockdep_rtnl_is_held(void) |
| { |
| return true; |
| } |
| #endif /* #ifdef CONFIG_PROVE_LOCKING */ |
| |
| /** |
| * rcu_dereference_rtnl - rcu_dereference with debug checking |
| * @p: The pointer to read, prior to dereferencing |
| * |
| * Do an rcu_dereference(p), but check caller either holds rcu_read_lock() |
| * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference() |
| */ |
| #define rcu_dereference_rtnl(p) \ |
| rcu_dereference_check(p, lockdep_rtnl_is_held()) |
| |
| /** |
| * rcu_dereference_bh_rtnl - rcu_dereference_bh with debug checking |
| * @p: The pointer to read, prior to dereference |
| * |
| * Do an rcu_dereference_bh(p), but check caller either holds rcu_read_lock_bh() |
| * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference_bh() |
| */ |
| #define rcu_dereference_bh_rtnl(p) \ |
| rcu_dereference_bh_check(p, lockdep_rtnl_is_held()) |
| |
| /** |
| * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL |
| * @p: The pointer to read, prior to dereferencing |
| * |
| * Return the value of the specified RCU-protected pointer, but omit |
| * the READ_ONCE(), because caller holds RTNL. |
| */ |
| #define rtnl_dereference(p) \ |
| rcu_dereference_protected(p, lockdep_rtnl_is_held()) |
| |
| static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev) |
| { |
| return rtnl_dereference(dev->ingress_queue); |
| } |
| |
| struct netdev_queue *dev_ingress_queue_create(struct net_device *dev); |
| |
| #ifdef CONFIG_NET_INGRESS |
| void net_inc_ingress_queue(void); |
| void net_dec_ingress_queue(void); |
| #endif |
| |
| #ifdef CONFIG_NET_EGRESS |
| void net_inc_egress_queue(void); |
| void net_dec_egress_queue(void); |
| #endif |
| |
| void rtnetlink_init(void); |
| void __rtnl_unlock(void); |
| void rtnl_kfree_skbs(struct sk_buff *head, struct sk_buff *tail); |
| |
| #define ASSERT_RTNL() \ |
| WARN_ONCE(!rtnl_is_locked(), \ |
| "RTNL: assertion failed at %s (%d)\n", __FILE__, __LINE__) |
| |
| extern int ndo_dflt_fdb_dump(struct sk_buff *skb, |
| struct netlink_callback *cb, |
| struct net_device *dev, |
| struct net_device *filter_dev, |
| int *idx); |
| extern int ndo_dflt_fdb_add(struct ndmsg *ndm, |
| struct nlattr *tb[], |
| struct net_device *dev, |
| const unsigned char *addr, |
| u16 vid, |
| u16 flags); |
| extern int ndo_dflt_fdb_del(struct ndmsg *ndm, |
| struct nlattr *tb[], |
| struct net_device *dev, |
| const unsigned char *addr, |
| u16 vid); |
| |
| extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
| struct net_device *dev, u16 mode, |
| u32 flags, u32 mask, int nlflags, |
| u32 filter_mask, |
| int (*vlan_fill)(struct sk_buff *skb, |
| struct net_device *dev, |
| u32 filter_mask)); |
| #endif /* __LINUX_RTNETLINK_H */ |