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https://github.com/openvswitch/ovs
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06aeda4805
Most of patch iron out USE_UPSTREAM_TUNNEL case where datapath directly use upstream tunneling modules. Signed-off-by: Pravin B Shelar <pshelar@ovn.org> Acked-by: Jesse Gross <jesse@kernel.org> Acked-by: Amitabha Biswas <abiswas@us.ibm.com>
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
#ifndef _NET_DST_CACHE_WRAPPER_H
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#define _NET_DST_CACHE_WRAPPER_H
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#include <linux/jiffies.h>
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#include <net/dst.h>
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#if IS_ENABLED(CONFIG_IPV6)
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#include <net/ip6_fib.h>
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#endif
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#ifdef USE_UPSTREAM_TUNNEL
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#include_next <net/dst_cache.h>
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#else
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struct dst_cache {
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struct dst_cache_pcpu __percpu *cache;
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unsigned long reset_ts;
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};
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/**
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* dst_cache_get - perform cache lookup
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* @dst_cache: the cache
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*
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* The caller should use dst_cache_get_ip4() if it need to retrieve the
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* source address to be used when xmitting to the cached dst.
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* local BH must be disabled.
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*/
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#define rpl_dst_cache_get dst_cache_get
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struct dst_entry *rpl_dst_cache_get(struct dst_cache *dst_cache);
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/**
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* dst_cache_get_ip4 - perform cache lookup and fetch ipv4 source address
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* @dst_cache: the cache
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* @saddr: return value for the retrieved source address
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*
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* local BH must be disabled.
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*/
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#define rpl_dst_cache_get_ip4 dst_cache_get_ip4
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struct rtable *rpl_dst_cache_get_ip4(struct dst_cache *dst_cache, __be32 *saddr);
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/**
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* dst_cache_set_ip4 - store the ipv4 dst into the cache
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* @dst_cache: the cache
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* @dst: the entry to be cached
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* @saddr: the source address to be stored inside the cache
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*
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* local BH must be disabled.
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*/
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#define rpl_dst_cache_set_ip4 dst_cache_set_ip4
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void rpl_dst_cache_set_ip4(struct dst_cache *dst_cache, struct dst_entry *dst,
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__be32 saddr);
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#if IS_ENABLED(CONFIG_IPV6)
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/**
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* dst_cache_set_ip6 - store the ipv6 dst into the cache
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* @dst_cache: the cache
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* @dst: the entry to be cached
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* @saddr: the source address to be stored inside the cache
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*
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* local BH must be disabled.
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*/
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#define rpl_dst_cache_set_ip6 dst_cache_set_ip6
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void rpl_dst_cache_set_ip6(struct dst_cache *dst_cache, struct dst_entry *dst,
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const struct in6_addr *addr);
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/**
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* dst_cache_get_ip6 - perform cache lookup and fetch ipv6 source address
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* @dst_cache: the cache
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* @saddr: return value for the retrieved source address
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*
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* local BH must be disabled.
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*/
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#define rpl_dst_cache_get_ip6 dst_cache_get_ip6
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struct dst_entry *rpl_dst_cache_get_ip6(struct dst_cache *dst_cache,
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struct in6_addr *saddr);
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#endif
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/**
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* dst_cache_reset - invalidate the cache contents
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* @dst_cache: the cache
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*
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* This do not free the cached dst to avoid races and contentions.
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* the dst will be freed on later cache lookup.
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*/
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static inline void dst_cache_reset(struct dst_cache *dst_cache)
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{
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dst_cache->reset_ts = jiffies;
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}
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/**
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* dst_cache_init - initialize the cache, allocating the required storage
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* @dst_cache: the cache
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* @gfp: allocation flags
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*/
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#define rpl_dst_cache_init dst_cache_init
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int rpl_dst_cache_init(struct dst_cache *dst_cache, gfp_t gfp);
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/**
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* dst_cache_destroy - empty the cache and free the allocated storage
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* @dst_cache: the cache
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*
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* No synchronization is enforced: it must be called only when the cache
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* is unsed.
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*/
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#define rpl_dst_cache_destroy dst_cache_destroy
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void rpl_dst_cache_destroy(struct dst_cache *dst_cache);
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#endif /* USE_UPSTREAM_TUNNEL */
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#endif
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