#ifndef _NET_DST_CACHE_H
#define _NET_DST_CACHE_H

#include <linux/jiffies.h>
#include <net/dst.h>
#if IS_ENABLED(CONFIG_IPV6)
#include <net/ip6_fib.h>
#endif

struct dst_cache {
	struct dst_cache_pcpu __percpu *cache;
	unsigned long reset_ts;
};

/**
 *	dst_cache_get - perform cache lookup
 *	@dst_cache: the cache
 *
 *	The caller should use dst_cache_get_ip4() if it need to retrieve the
 *	source address to be used when xmitting to the cached dst.
 *	local BH must be disabled.
 */
struct dst_entry *dst_cache_get(struct dst_cache *dst_cache);

/**
 *	dst_cache_get_ip4 - perform cache lookup and fetch ipv4 source address
 *	@dst_cache: the cache
 *	@saddr: return value for the retrieved source address
 *
 *	local BH must be disabled.
 */
struct rtable *dst_cache_get_ip4(struct dst_cache *dst_cache, __be32 *saddr);

/**
 *	dst_cache_set_ip4 - store the ipv4 dst into the cache
 *	@dst_cache: the cache
 *	@dst: the entry to be cached
 *	@saddr: the source address to be stored inside the cache
 *
 *	local BH must be disabled.
 */
void dst_cache_set_ip4(struct dst_cache *dst_cache, struct dst_entry *dst,
		       __be32 saddr);

#if IS_ENABLED(CONFIG_IPV6)

/**
 *	dst_cache_set_ip6 - store the ipv6 dst into the cache
 *	@dst_cache: the cache
 *	@dst: the entry to be cached
 *	@saddr: the source address to be stored inside the cache
 *
 *	local BH must be disabled.
 */
void dst_cache_set_ip6(struct dst_cache *dst_cache, struct dst_entry *dst,
		       const struct in6_addr *addr);

/**
 *	dst_cache_get_ip6 - perform cache lookup and fetch ipv6 source address
 *	@dst_cache: the cache
 *	@saddr: return value for the retrieved source address
 *
 *	local BH must be disabled.
 */
struct dst_entry *dst_cache_get_ip6(struct dst_cache *dst_cache,
				    struct in6_addr *saddr);
#endif

/**
 *	dst_cache_reset - invalidate the cache contents
 *	@dst_cache: the cache
 *
 *	This do not free the cached dst to avoid races and contentions.
 *	the dst will be freed on later cache lookup.
 */
static inline void dst_cache_reset(struct dst_cache *dst_cache)
{
	dst_cache->reset_ts = jiffies;
}

/**
 *	dst_cache_init - initialize the cache, allocating the required storage
 *	@dst_cache: the cache
 *	@gfp: allocation flags
 */
int dst_cache_init(struct dst_cache *dst_cache, gfp_t gfp);

/**
 *	dst_cache_destroy - empty the cache and free the allocated storage
 *	@dst_cache: the cache
 *
 *	No synchronization is enforced: it must be called only when the cache
 *	is unsed.
 */
void dst_cache_destroy(struct dst_cache *dst_cache);

#endif

<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/log/?h=nds-private-remove&amp;id=a61d5ce9cc56e2e41bbb1ad62ca7a16d7e7567bd'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?h=nds-private-remove&amp;id=a61d5ce9cc56e2e41bbb1ad62ca7a16d7e7567bd'>include</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/net?h=nds-private-remove&amp;id=a61d5ce9cc56e2e41bbb1ad62ca7a16d7e7567bd'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/net/if_inet6.h?h=nds-private-remove&amp;id=a61d5ce9cc56e2e41bbb1ad62ca7a16d7e7567bd'>if_inet6.h</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include/net/if_inet6.h?h=nds-private-remove&amp;id=a61d5ce9cc56e2e41bbb1ad62ca7a16d7e7567bd&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
</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>Stanislaw Gruszka &lt;sgruszka@redhat.com&gt;</td><td class='right'>2017-01-29 12:40:52 +0100</td></tr>
<tr><th>committer</th><td>Kalle Valo &lt;kvalo@codeaurora.org&gt;</td><td class='right'>2017-01-31 09:08:52 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/exynos5440.h?id=33e962c8871f015f5c8978384553dddcf5b81b22'>33e962c8871f015f5c8978384553dddcf5b81b22</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/dt-bindings/clock/exynos5440.h?id=33e962c8871f015f5c8978384553dddcf5b81b22'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=33e962c8871f015f5c8978384553dddcf5b81b22'>43aff96c2ee21d9e0fa2018457778a4de52053cd</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/clock/exynos5440.h?id=33e962c8871f015f5c8978384553dddcf5b81b22'>include/dt-bindings/clock/exynos5440.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/exynos5440.h?id=575ddce0507789bf9830d089557d2199d2f91865'>575ddce0507789bf9830d089557d2199d2f91865</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/clock/exynos5440.h?id=33e962c8871f015f5c8978384553dddcf5b81b22&amp;id2=575ddce0507789bf9830d089557d2199d2f91865'>diff</a>)</td></tr></table>
<div class='commit-subject'>rt2x00: fix clk_get call</div><div class='commit-msg'>clk_get() takes two arguments and might return ERR_PTR(), so we
have to nullify pointer on that case, to do not break further call
to clk_get_rate().

Reported-by: Felix Fietkau &lt;nbd@nbd.name&gt;
Fixes: 34db70b92fae ("rt2x00: add copy of clk for soc devices")
Signed-off-by: Stanislaw Gruszka &lt;sgruszka@redhat.com&gt;
Signed-off-by: Kalle Valo &lt;kvalo@codeaurora.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=33e962c8871f015f5c8978384553dddcf5b81b22'>Diffstat</a> (limited to 'include/dt-bindings/clock/exynos5440.h')</div><table summary='diffstat' class='diffstat'>