| Server IP : 20.75.53.88 / Your IP : 216.73.217.72 [ Web Server : Apache System : Linux VMRALP-3 4.4.0-256-generic #290~14.04.1-Ubuntu SMP Thu Jun 20 09:24:50 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 5.5.9-1ubuntu4.29+esm15 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, Domains : 3 Domains MySQL : ON | cURL : OFF | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/src/linux-headers-4.4.0-256/include/net/ |
Upload File : |
#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