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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778/* SPDX-License-Identifier: GPL-2.0 *//* linux/net/inet/arp.h */#ifndef _ARP_H#define _ARP_H
#include <linux/if_arp.h>#include <linux/hash.h>#include <net/neighbour.h>
extern struct neigh_table arp_tbl;
static inline u32 arp_hashfn(const void *pkey, const struct net_device *dev, u32 *hash_rnd){ u32 key = *(const u32 *)pkey; u32 val = key ^ hash32_ptr(dev);
return val * hash_rnd[0];}
#ifdef CONFIG_INETstatic inline struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev, u32 key){ if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT)) key = INADDR_ANY;
return ___neigh_lookup_noref(&arp_tbl, neigh_key_eq32, arp_hashfn, &key, dev);}#elsestatic inlinestruct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev, u32 key){ return NULL;}#endif
static inline struct neighbour *__ipv4_neigh_lookup(struct net_device *dev, u32 key){ struct neighbour *n;
rcu_read_lock(); n = __ipv4_neigh_lookup_noref(dev, key); if (n && !refcount_inc_not_zero(&n->refcnt)) n = NULL; rcu_read_unlock();
return n;}
static inline void __ipv4_confirm_neigh(struct net_device *dev, u32 key){ struct neighbour *n;
rcu_read_lock(); n = __ipv4_neigh_lookup_noref(dev, key); neigh_confirm(n); rcu_read_unlock();}
void arp_init(void);int arp_ioctl(struct net *net, unsigned int cmd, void __user *arg);void arp_send(int type, int ptype, __be32 dest_ip, struct net_device *dev, __be32 src_ip, const unsigned char *dest_hw, const unsigned char *src_hw, const unsigned char *th);int arp_mc_map(__be32 addr, u8 *haddr, struct net_device *dev, int dir);void arp_ifdown(struct net_device *dev);int arp_invalidate(struct net_device *dev, __be32 ip, bool force);
struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip, struct net_device *dev, __be32 src_ip, const unsigned char *dest_hw, const unsigned char *src_hw, const unsigned char *target_hw);void arp_xmit(struct sk_buff *skb);
#endif /* _ARP_H */