LISP: add NSH support
Change-Id: I971c110ed126f1a24a963f9d3b88cf8f8c308816
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
diff --git a/src/vnet/lisp-cp/gid_dictionary.c b/src/vnet/lisp-cp/gid_dictionary.c
index 80d59fa..cf9a741 100644
--- a/src/vnet/lisp-cp/gid_dictionary.c
+++ b/src/vnet/lisp-cp/gid_dictionary.c
@@ -345,6 +345,14 @@
kv->key[2] = (u64) 0;
}
+static void
+make_nsh_key (BVT (clib_bihash_kv) * kv, u32 vni, u32 spi, u8 si)
+{
+ kv->key[0] = (u64) vni;
+ kv->key[1] = (u64) spi;
+ kv->key[2] = (u64) si;
+}
+
static u64
arp_lookup (gid_l2_arp_table_t * db, u32 bd, ip4_address_t * key)
{
@@ -360,6 +368,21 @@
return GID_LOOKUP_MISS_L2;
}
+static u32
+nsh_lookup (gid_nsh_table_t * db, u32 vni, u32 spi, u8 si)
+{
+ int rv;
+ BVT (clib_bihash_kv) kv, value;
+
+ make_nsh_key (&kv, vni, spi, si);
+ rv = BV (clib_bihash_search_inline_2) (&db->nsh_lookup_table, &kv, &value);
+
+ if (rv == 0)
+ return value.value;
+
+ return GID_LOOKUP_MISS;
+}
+
u64
gid_dictionary_lookup (gid_dictionary_t * db, gid_address_t * key)
{
@@ -393,6 +416,9 @@
case GID_ADDR_ARP:
return arp_lookup (&db->arp_table, gid_address_arp_bd (key),
&gid_address_arp_ip4 (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));
default:
clib_warning ("address type %d not supported!", gid_address_type (key));
break;
@@ -432,6 +458,9 @@
break;
}
break;
+ case GID_ADDR_NSH:
+ return gid_dictionary_lookup (db, dst);
+ break;
default:
clib_warning ("address type %d not supported!", gid_address_type (dst));
break;
@@ -860,7 +889,7 @@
return ~0;
}
-static u32
+static u64
add_del_arp (gid_l2_arp_table_t * db, u32 bd, ip4_address_t * key, u64 value,
u8 is_add)
{
@@ -885,6 +914,31 @@
return old_val;
}
+static u32
+add_del_nsh (gid_nsh_table_t * db, u32 vni, u32 spi, u8 si, u32 value,
+ u8 is_add)
+{
+ BVT (clib_bihash_kv) kv, result;
+ u32 old_val = ~0;
+
+ make_nsh_key (&kv, vni, spi, si);
+ if (BV (clib_bihash_search) (&db->nsh_lookup_table, &kv, &result) == 0)
+ old_val = result.value;
+
+ if (is_add)
+ {
+ kv.value = value;
+ BV (clib_bihash_add_del) (&db->nsh_lookup_table, &kv, 1 /* is_add */ );
+ db->count++;
+ }
+ else
+ {
+ BV (clib_bihash_add_del) (&db->nsh_lookup_table, &kv, 0 /* is_add */ );
+ db->count--;
+ }
+ return old_val;
+}
+
u32
gid_dictionary_add_del (gid_dictionary_t * db, gid_address_t * key, u64 value,
u8 is_add)
@@ -903,6 +957,11 @@
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_NSH:
+ return add_del_nsh (&db->nsh_table, gid_address_vni (key),
+ gid_address_nsh_spi (key), gid_address_nsh_si (key),
+ value, is_add);
+
default:
clib_warning ("address type %d not supported!", gid_address_type (key));
break;
@@ -944,6 +1003,23 @@
db->arp_lookup_table_size);
}
+static void
+nsh_lookup_init (gid_nsh_table_t * db)
+{
+ if (db->nsh_lookup_table_nbuckets == 0)
+ db->nsh_lookup_table_nbuckets = MAC_LOOKUP_DEFAULT_HASH_NUM_BUCKETS;
+
+ db->nsh_lookup_table_nbuckets =
+ 1 << max_log2 (db->nsh_lookup_table_nbuckets);
+
+ if (db->nsh_lookup_table_size == 0)
+ db->nsh_lookup_table_size = MAC_LOOKUP_DEFAULT_HASH_MEMORY_SIZE;
+
+ BV (clib_bihash_init) (&db->nsh_lookup_table, "nsh lookup table",
+ db->nsh_lookup_table_nbuckets,
+ db->nsh_lookup_table_size);
+}
+
void
gid_dictionary_init (gid_dictionary_t * db)
{
@@ -951,6 +1027,7 @@
ip6_lookup_init (&db->dst_ip6_table);
mac_lookup_init (&db->sd_mac_table);
arp_lookup_init (&db->arp_table);
+ nsh_lookup_init (&db->nsh_table);
}
/*