/* 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];
}

static inline struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev, u32 key)
{
	return ___neigh_lookup_noref(&arp_tbl, neigh_key_eq32, arp_hashfn, &key, dev);
}

static inline struct neighbour *__ipv4_neigh_lookup(struct net_device *dev, u32 key)
{
	struct neighbour *n;

	rcu_read_lock_bh();
	n = __ipv4_neigh_lookup_noref(dev, key);
	if (n && !atomic_inc_not_zero(&n->refcnt))
		n = NULL;
	rcu_read_unlock_bh();

	return n;
}

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);

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 */
/td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/Documentation/arm'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/Documentation/arm?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/Documentation/arm?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/Documentation/arm?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/Documentation/arm'>
<input type='hidden' name='id' value='9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>Documentation</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation/arm?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>arm</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-04-17 12:30:06 -0700</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-04-17 12:30:06 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation/arm?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd</a> (<a href='/cgit.cgi/linux/net-next.git/patch/Documentation/arm?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>682aa81166cf120ef72e4d402fdd5a2c3cc2e179</a> /<a href='/cgit.cgi/linux/net-next.git/tree/Documentation/arm?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>Documentation/arm</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation/arm?id=b9f5dba225aede4518ab0a7374c2dc38c7c049ce'>b9f5dba225aede4518ab0a7374c2dc38c7c049ce</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation/arm?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd&amp;id2=b9f5dba225aede4518ab0a7374c2dc38c7c049ce'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation/arm?id=6545b60baaf880b0cd29a5e89dbe745a06027e89'>6545b60baaf880b0cd29a5e89dbe745a06027e89</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation/arm?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd&amp;id2=6545b60baaf880b0cd29a5e89dbe745a06027e89'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'dm-4.6-fix-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm</div><div class='commit-msg'>Pull device mapper fix from Mike Snitzer:
 "Fix for earlier 4.6-rc4 stable@ commit that introduced improper use of
  write lock in cmd_read_lock() -- due to cut-n-paste gone awry (and
  sparse didn't catch it)"

* tag 'dm-4.6-fix-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm cache metadata: fix cmd_read_lock() acquiring write lock
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=9d090d01e3efdcdb8f7f07e86fcac91e01ae30cd'>Diffstat</a> (limited to 'Documentation/arm')</div><table summary='diffstat' class='diffstat'>