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bfdd: create a hash table for local sbfd reflector info

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Signed-off-by: wumu.zsl <wumu.zsl@alibaba-inc.com>
This commit is contained in:
wumu.zsl 2025-01-21 05:41:35 +00:00
parent 868c4d02e6
commit 5107e273d0
2 changed files with 119 additions and 1 deletions
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104
bfdd/bfd.c
View File

@ -23,6 +23,7 @@ DEFINE_MTYPE_STATIC(BFDD, BFDD_CONFIG, "long-lived configuration memory");
DEFINE_MTYPE_STATIC(BFDD, BFDD_PROFILE, "long-lived profile memory");
DEFINE_MTYPE_STATIC(BFDD, BFDD_SESSION_OBSERVER, "Session observer");
DEFINE_MTYPE_STATIC(BFDD, BFDD_VRF, "BFD VRF");
DEFINE_MTYPE_STATIC(BFDD, SBFD_REFLECTOR, "SBFD REFLECTOR");
/*
* Prototypes
@ -1529,6 +1530,10 @@ void bs_to_bpc(struct bfd_session *bs, struct bfd_peer_cfg *bpc)
static struct hash *bfd_id_hash;
static struct hash *bfd_key_hash;
/*sbfd reflector discr hash*/
static struct hash *sbfd_rflt_hash;
static unsigned int sbfd_discr_hash_do(const void *p);
static unsigned int bfd_id_hash_do(const void *p);
static unsigned int bfd_key_hash_do(const void *p);
@ -1604,6 +1609,20 @@ static bool bfd_key_hash_cmp(const void *n1, const void *n2)
return true;
}
/* SBFD disr hash . */
static unsigned int sbfd_discr_hash_do(const void *p)
{
const struct sbfd_reflector *sr = p;
return jhash_1word(sr->discr, 0);
}
static bool sbfd_discr_hash_cmp(const void *n1, const void *n2)
{
const struct sbfd_reflector *sr1 = n1, *sr2 = n2;
return sr1->discr == sr2->discr;
}
/*
* Hash public interface / exported functions.
@ -1628,6 +1647,15 @@ struct bfd_session *bfd_key_lookup(struct bfd_key key)
return hash_lookup(bfd_key_hash, &bs);
}
struct sbfd_reflector *sbfd_discr_lookup(uint32_t discr)
{
struct sbfd_reflector sr;
sr.discr = discr;
return hash_lookup(sbfd_rflt_hash, &sr);
}
/*
* Delete functions.
*
@ -1656,6 +1684,15 @@ struct bfd_session *bfd_key_delete(struct bfd_key key)
return hash_release(bfd_key_hash, &bs);
}
struct sbfd_reflector *sbfd_discr_delete(uint32_t discr)
{
struct sbfd_reflector sr;
sr.discr = discr;
return hash_release(sbfd_rflt_hash, &sr);
}
/* Iteration functions. */
void bfd_id_iterate(hash_iter_func hif, void *arg)
{
@ -1667,6 +1704,11 @@ void bfd_key_iterate(hash_iter_func hif, void *arg)
hash_iterate(bfd_key_hash, hif, arg);
}
void sbfd_discr_iterate(hash_iter_func hif, void *arg)
{
hash_iterate(sbfd_rflt_hash, hif, arg);
}
/*
* Insert functions.
*
@ -1683,12 +1725,24 @@ bool bfd_key_insert(struct bfd_session *bs)
return (hash_get(bfd_key_hash, bs, hash_alloc_intern) == bs);
}
bool sbfd_discr_insert(struct sbfd_reflector *sr)
{
return (hash_get(sbfd_rflt_hash, sr, hash_alloc_intern) == sr);
}
unsigned long sbfd_discr_get_count(void)
{
return sbfd_rflt_hash->count;
}
void bfd_initialize(void)
{
bfd_id_hash = hash_create(bfd_id_hash_do, bfd_id_hash_cmp,
"BFD session discriminator hash");
bfd_key_hash = hash_create(bfd_key_hash_do, bfd_key_hash_cmp,
"BFD session hash");
sbfd_rflt_hash = hash_create(sbfd_discr_hash_do, sbfd_discr_hash_cmp,
"SBFD reflector discriminator hash");
TAILQ_INIT(&bplist);
}
@ -1700,6 +1754,14 @@ static void _bfd_free(struct hash_bucket *hb,
bfd_session_free(bs);
}
static void _sbfd_reflector_free(struct hash_bucket *hb, void *arg __attribute__((__unused__)))
{
struct sbfd_reflector *sr = hb->data;
sbfd_reflector_free(sr->discr);
}
void bfd_shutdown(void)
{
struct bfd_profile *bp;
@ -1714,9 +1776,13 @@ void bfd_shutdown(void)
bfd_id_iterate(_bfd_free, NULL);
assert(bfd_key_hash->count == 0);
sbfd_discr_iterate(_sbfd_reflector_free, NULL);
assert(sbfd_rflt_hash->count == 0);
/* Now free the hashes themselves. */
hash_free(bfd_id_hash);
hash_free(bfd_key_hash);
hash_free(sbfd_rflt_hash);
/* Free all profile allocations. */
while ((bp = TAILQ_FIRST(&bplist)) != NULL)
@ -2066,6 +2132,44 @@ unsigned long bfd_get_session_count(void)
return bfd_key_hash->count;
}
struct sbfd_reflector *sbfd_reflector_new(const uint32_t discr, struct in6_addr *sip)
{
struct sbfd_reflector *sr;
sr = sbfd_discr_lookup(discr);
if (sr)
return sr;
sr = XCALLOC(MTYPE_SBFD_REFLECTOR, sizeof(*sr));
sr->discr = discr;
memcpy(&sr->local, sip, sizeof(struct in6_addr));
sbfd_discr_insert(sr);
return sr;
}
void sbfd_reflector_free(const uint32_t discr)
{
struct sbfd_reflector *sr;
sr = sbfd_discr_lookup(discr);
if (!sr)
return;
sbfd_discr_delete(discr);
XFREE(MTYPE_SBFD_REFLECTOR, sr);
return;
}
void sbfd_reflector_flush()
{
sbfd_discr_iterate(_sbfd_reflector_free, NULL);
return;
}
void bfd_rtt_init(struct bfd_session *bfd)
{
uint8_t i;

16
bfdd/bfd.h
View File

@ -411,6 +411,11 @@ struct bfd_session_observer {
};
TAILQ_HEAD(obslist, bfd_session_observer);
/*sbfd reflector struct*/
struct sbfd_reflector {
uint32_t discr;
struct in6_addr local;
};
/* States defined per 4.1 */
#define PTM_BFD_ADM_DOWN 0
@ -667,18 +672,22 @@ void bfd_vrf_terminate(void);
struct bfd_vrf_global *bfd_vrf_look_by_session(struct bfd_session *bfd);
struct bfd_session *bfd_id_lookup(uint32_t id);
struct bfd_session *bfd_key_lookup(struct bfd_key key);
struct sbfd_reflector *sbfd_discr_lookup(uint32_t discr);
struct bfd_session *bfd_id_delete(uint32_t id);
struct bfd_session *bfd_key_delete(struct bfd_key key);
struct sbfd_reflector *sbfd_discr_delete(uint32_t discr);
bool bfd_id_insert(struct bfd_session *bs);
bool bfd_key_insert(struct bfd_session *bs);
bool sbfd_discr_insert(struct sbfd_reflector *sr);
typedef void (*hash_iter_func)(struct hash_bucket *hb, void *arg);
void bfd_id_iterate(hash_iter_func hif, void *arg);
void bfd_key_iterate(hash_iter_func hif, void *arg);
void sbfd_discr_iterate(hash_iter_func hif, void *arg);
unsigned long bfd_get_session_count(void);
unsigned long sbfd_discr_get_count(void);
/* Export callback functions for `event.c`. */
extern struct event_loop *master;
@ -823,4 +832,9 @@ int bfd_dplane_update_session_counters(struct bfd_session *bs);
void bfd_dplane_show_counters(struct vty *vty);
/*sbfd relfector*/
struct sbfd_reflector *sbfd_reflector_new(const uint32_t discr, struct in6_addr *sip);
void sbfd_reflector_free(const uint32_t discr);
void sbfd_reflector_flush(void);
#endif /* _BFD_H_ */