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authorFilip Tehlar <ftehlar@cisco.com>2017-09-05 15:46:09 +0200
committerFlorin Coras <florin.coras@gmail.com>2017-09-19 16:00:51 +0000
commit058799951d062bbbe4df8df101b4db5bc7797b8f (patch)
treee723fcadfdfbf47d5887503843babe98779dd863 /src/vnet/lisp-cp/gid_dictionary.c
parent02e14b526dc6f30c534e483c8e4a77678e27352e (diff)
LISP: support for neighbor discovery
Change-Id: I0f1a051dd3b5786dc7c457bc6fc7ce4fcd0f530c Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
Diffstat (limited to 'src/vnet/lisp-cp/gid_dictionary.c')
-rw-r--r--src/vnet/lisp-cp/gid_dictionary.c82
1 files changed, 49 insertions, 33 deletions
diff --git a/src/vnet/lisp-cp/gid_dictionary.c b/src/vnet/lisp-cp/gid_dictionary.c
index cf9a741ae12..c3b93301a41 100644
--- a/src/vnet/lisp-cp/gid_dictionary.c
+++ b/src/vnet/lisp-cp/gid_dictionary.c
@@ -139,12 +139,13 @@ gid_dict_foreach_subprefix (gid_dictionary_t * db, gid_address_t * eid,
}
void
-gid_dict_foreach_l2_arp_entry (gid_dictionary_t * db, void (*cb)
- (BVT (clib_bihash_kv) * kvp, void *arg),
- void *ht)
+gid_dict_foreach_l2_arp_ndp_entry (gid_dictionary_t * db, void (*cb)
+ (BVT (clib_bihash_kv) * kvp, void *arg),
+ void *ht)
{
- gid_l2_arp_table_t *tab = &db->arp_table;
- BV (clib_bihash_foreach_key_value_pair) (&tab->arp_lookup_table, cb, ht);
+ gid_l2_arp_ndp_table_t *tab = &db->arp_ndp_table;
+ BV (clib_bihash_foreach_key_value_pair) (&tab->arp_ndp_lookup_table, cb,
+ ht);
}
static void
@@ -338,11 +339,19 @@ ip_sd_lookup (gid_dictionary_t * db, u32 vni, ip_prefix_t * dst,
}
static void
-make_arp_key (BVT (clib_bihash_kv) * kv, u32 bd, ip4_address_t * addr)
+make_arp_ndp_key (BVT (clib_bihash_kv) * kv, u32 bd, ip_address_t * addr)
{
- kv->key[0] = (u64) bd;
- kv->key[1] = (u64) addr->as_u32;
- kv->key[2] = (u64) 0;
+ kv->key[0] = ((u64) bd << 32) | (u32) ip_addr_version (addr);
+ if (ip_addr_version (addr) == IP4)
+ {
+ kv->key[1] = (u64) addr->ip.v4.as_u32;
+ kv->key[2] = (u64) 0;
+ }
+ else
+ {
+ kv->key[1] = (u64) addr->ip.v6.as_u64[0];
+ kv->key[2] = (u64) addr->ip.v6.as_u64[1];
+ }
}
static void
@@ -354,13 +363,14 @@ make_nsh_key (BVT (clib_bihash_kv) * kv, u32 vni, u32 spi, u8 si)
}
static u64
-arp_lookup (gid_l2_arp_table_t * db, u32 bd, ip4_address_t * key)
+arp_ndp_lookup (gid_l2_arp_ndp_table_t * db, u32 bd, ip_address_t * key)
{
int rv;
BVT (clib_bihash_kv) kv, value;
- make_arp_key (&kv, bd, key);
- rv = BV (clib_bihash_search_inline_2) (&db->arp_lookup_table, &kv, &value);
+ make_arp_ndp_key (&kv, bd, key);
+ rv = BV (clib_bihash_search_inline_2) (&db->arp_ndp_lookup_table, &kv,
+ &value);
if (rv == 0)
return value.value;
@@ -414,8 +424,9 @@ gid_dictionary_lookup (gid_dictionary_t * db, gid_address_t * key)
}
break;
case GID_ADDR_ARP:
- return arp_lookup (&db->arp_table, gid_address_arp_bd (key),
- &gid_address_arp_ip4 (key));
+ case GID_ADDR_NDP:
+ return arp_ndp_lookup (&db->arp_ndp_table, gid_address_arp_ndp_bd (key),
+ &gid_address_arp_ndp_ip (key));
case GID_ADDR_NSH:
return nsh_lookup (&db->nsh_table, gid_address_vni (key),
gid_address_nsh_spi (key), gid_address_nsh_si (key));
@@ -890,25 +901,27 @@ add_del_sd (gid_dictionary_t * db, u32 vni, source_dest_t * key, u32 value,
}
static u64
-add_del_arp (gid_l2_arp_table_t * db, u32 bd, ip4_address_t * key, u64 value,
- u8 is_add)
+add_del_arp_ndp (gid_l2_arp_ndp_table_t * db, u32 bd, ip_address_t * key,
+ u64 value, u8 is_add)
{
BVT (clib_bihash_kv) kv, result;
u32 old_val = ~0;
- make_arp_key (&kv, bd, key);
- if (BV (clib_bihash_search) (&db->arp_lookup_table, &kv, &result) == 0)
+ make_arp_ndp_key (&kv, bd, key);
+ if (BV (clib_bihash_search) (&db->arp_ndp_lookup_table, &kv, &result) == 0)
old_val = result.value;
if (is_add)
{
kv.value = value;
- BV (clib_bihash_add_del) (&db->arp_lookup_table, &kv, 1 /* is_add */ );
+ BV (clib_bihash_add_del) (&db->arp_ndp_lookup_table, &kv,
+ 1 /* is_add */ );
db->count++;
}
else
{
- BV (clib_bihash_add_del) (&db->arp_lookup_table, &kv, 0 /* is_add */ );
+ BV (clib_bihash_add_del) (&db->arp_ndp_lookup_table, &kv,
+ 0 /* is_add */ );
db->count--;
}
return old_val;
@@ -955,8 +968,10 @@ gid_dictionary_add_del (gid_dictionary_t * db, gid_address_t * key, u64 value,
return add_del_sd (db, gid_address_vni (key), &gid_address_sd (key),
(u32) value, is_add);
case GID_ADDR_ARP:
- return add_del_arp (&db->arp_table, gid_address_arp_bd (key),
- &gid_address_arp_ip4 (key), value, is_add);
+ case GID_ADDR_NDP:
+ return add_del_arp_ndp (&db->arp_ndp_table,
+ gid_address_arp_ndp_bd (key),
+ &gid_address_arp_ndp_ip (key), value, is_add);
case GID_ADDR_NSH:
return add_del_nsh (&db->nsh_table, gid_address_vni (key),
gid_address_nsh_spi (key), gid_address_nsh_si (key),
@@ -987,20 +1002,21 @@ mac_lookup_init (gid_mac_table_t * db)
}
static void
-arp_lookup_init (gid_l2_arp_table_t * db)
+arp_ndp_lookup_init (gid_l2_arp_ndp_table_t * db)
{
- if (db->arp_lookup_table_nbuckets == 0)
- db->arp_lookup_table_nbuckets = ARP_LOOKUP_DEFAULT_HASH_NUM_BUCKETS;
+ if (db->arp_ndp_lookup_table_nbuckets == 0)
+ db->arp_ndp_lookup_table_nbuckets =
+ ARP_NDP_LOOKUP_DEFAULT_HASH_NUM_BUCKETS;
- db->arp_lookup_table_nbuckets =
- 1 << max_log2 (db->arp_lookup_table_nbuckets);
+ db->arp_ndp_lookup_table_nbuckets =
+ 1 << max_log2 (db->arp_ndp_lookup_table_nbuckets);
- if (db->arp_lookup_table_size == 0)
- db->arp_lookup_table_size = ARP_LOOKUP_DEFAULT_HASH_MEMORY_SIZE;
+ if (db->arp_ndp_lookup_table_size == 0)
+ db->arp_ndp_lookup_table_size = ARP_NDP_LOOKUP_DEFAULT_HASH_MEMORY_SIZE;
- BV (clib_bihash_init) (&db->arp_lookup_table, "arp lookup table",
- db->arp_lookup_table_nbuckets,
- db->arp_lookup_table_size);
+ BV (clib_bihash_init) (&db->arp_ndp_lookup_table, "arp ndp lookup table",
+ db->arp_ndp_lookup_table_nbuckets,
+ db->arp_ndp_lookup_table_size);
}
static void
@@ -1026,7 +1042,7 @@ gid_dictionary_init (gid_dictionary_t * db)
ip4_lookup_init (&db->dst_ip4_table);
ip6_lookup_init (&db->dst_ip6_table);
mac_lookup_init (&db->sd_mac_table);
- arp_lookup_init (&db->arp_table);
+ arp_ndp_lookup_init (&db->arp_ndp_table);
nsh_lookup_init (&db->nsh_table);
}