2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vnet/lisp-gpe/lisp_gpe_tenant.h>
19 * The pool of all tenants
21 static lisp_gpe_tenant_t *lisp_gpe_tenant_pool;
24 * The hash table of all tenants: key:{VNI}.
26 uword *lisp_gpe_tenant_db;
28 static lisp_gpe_tenant_t *
29 lisp_gpe_tenant_find (u32 vni)
33 p = hash_get (lisp_gpe_tenant_db, vni);
38 return (pool_elt_at_index (lisp_gpe_tenant_pool, p[0]));
41 static lisp_gpe_tenant_t *
42 lisp_gpe_tenant_find_or_create_i (u32 vni)
44 lisp_gpe_tenant_t *lt;
46 lt = lisp_gpe_tenant_find (vni);
50 pool_get (lisp_gpe_tenant_pool, lt);
51 memset (lt, 0, sizeof (*lt));
57 hash_set (lisp_gpe_tenant_db, vni, lt - lisp_gpe_tenant_pool);
64 * @brief Find or create a tenant for the given VNI
67 lisp_gpe_tenant_find_or_create (u32 vni)
69 lisp_gpe_tenant_t *lt;
71 lt = lisp_gpe_tenant_find (vni);
75 lt = lisp_gpe_tenant_find_or_create_i (vni);
78 return (lt - lisp_gpe_tenant_pool);
82 * @brief If there are no more locks/users of te tenant, then delete it
85 lisp_gpe_tenant_delete_if_empty (lisp_gpe_tenant_t * lt)
89 for (i = 0; i < LISP_GPE_TENANT_LOCK_NUM; i++)
95 hash_unset (lisp_gpe_tenant_db, lt->lt_vni);
96 pool_put (lisp_gpe_tenant_pool, lt);
100 * @brief Add/create and lock a new or find and lock the existing L3
101 * interface for the tenant
103 * @paran vni The tenant's VNI
104 * @param table_id the Tenant's L3 table ID.
106 * @return the SW IF index of the L3 interface
109 lisp_gpe_tenant_l3_iface_add_or_lock (u32 vni, u32 table_id)
111 lisp_gpe_tenant_t *lt;
113 lt = lisp_gpe_tenant_find_or_create_i (vni);
115 if (~0 == lt->lt_table_id)
116 lt->lt_table_id = table_id;
118 ASSERT (lt->lt_table_id == table_id);
120 if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L3_IFACE])
122 /* create the l3 interface since there are currently no users of it */
123 lt->lt_l3_sw_if_index =
124 lisp_gpe_add_l3_iface (&lisp_gpe_main, vni, table_id);
127 lt->lt_locks[LISP_GPE_TENANT_LOCK_L3_IFACE]++;
129 return (lt->lt_l3_sw_if_index);
133 * @brief Release the lock held on the tenant's L3 interface
136 lisp_gpe_tenant_l3_iface_unlock (u32 vni)
138 lisp_gpe_tenant_t *lt;
140 lt = lisp_gpe_tenant_find (vni);
144 clib_warning ("No tenant for VNI %d", vni);
147 if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L3_IFACE])
149 clib_warning ("No L3 interface for tenant VNI %d", vni);
153 lt->lt_locks[LISP_GPE_TENANT_LOCK_L3_IFACE]--;
155 if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L3_IFACE])
157 /* the last user has gone, so delete the l3 interface */
158 lisp_gpe_del_l3_iface (&lisp_gpe_main, vni, lt->lt_table_id);
162 * If there are no more locks on any tenant managed resource, then
163 * this tenant is toast.
165 lisp_gpe_tenant_delete_if_empty (lt);
169 * @brief Add/create and lock a new or find and lock the existing L2
170 * interface for the tenant
172 * @paran vni The tenant's VNI
173 * @param table_id the Tenant's L2 Bridge Domain ID.
175 * @return the SW IF index of the L2 interface
178 lisp_gpe_tenant_l2_iface_add_or_lock (u32 vni, u32 bd_id)
180 lisp_gpe_tenant_t *lt;
182 lt = lisp_gpe_tenant_find_or_create_i (vni);
186 clib_warning ("No tenant for VNI %d", vni);
190 if (~0 == lt->lt_bd_id)
191 lt->lt_bd_id = bd_id;
193 ASSERT (lt->lt_bd_id == bd_id);
195 if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L2_IFACE])
197 /* create the l2 interface since there are currently no users of it */
198 lt->lt_l2_sw_if_index =
199 lisp_gpe_add_l2_iface (&lisp_gpe_main, vni, bd_id);
202 lt->lt_locks[LISP_GPE_TENANT_LOCK_L2_IFACE]++;
204 return (lt->lt_l2_sw_if_index);
208 * @brief Release the lock held on the tenant's L3 interface
211 lisp_gpe_tenant_l2_iface_unlock (u32 vni)
213 lisp_gpe_tenant_t *lt;
215 lt = lisp_gpe_tenant_find (vni);
219 clib_warning ("No tenant for VNI %d", vni);
223 if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L2_IFACE])
225 clib_warning ("No L2 interface for tenant VNI %d", vni);
229 lt->lt_locks[LISP_GPE_TENANT_LOCK_L2_IFACE]--;
231 if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L2_IFACE])
233 /* the last user has gone, so delete the l2 interface */
234 lisp_gpe_del_l2_iface (&lisp_gpe_main, vni, lt->lt_bd_id);
238 * If there are no more locks on any tenant managed resource, then
239 * this tenant is toast.
241 lisp_gpe_tenant_delete_if_empty (lt);
245 * @brief get a const pointer to the tenant object
247 const lisp_gpe_tenant_t *
248 lisp_gpe_tenant_get (u32 index)
250 return (pool_elt_at_index (lisp_gpe_tenant_pool, index));
254 * @brief Flush/delete ALL the tenants
257 lisp_gpe_tenant_flush (void)
259 lisp_gpe_tenant_t *lt;
262 pool_foreach(lt, lisp_gpe_tenant_pool,
264 lisp_gpe_tenant_l2_iface_unlock(lt->lt_vni);
265 lisp_gpe_tenant_l3_iface_unlock(lt->lt_vni);
271 * @brif Show/display one tenant
274 format_lisp_gpe_tenant (u8 * s, va_list ap)
276 const lisp_gpe_tenant_t *lt = va_arg (ap, lisp_gpe_tenant_t *);
278 s = format (s, "VNI:%d ", lt->lt_vni);
280 if (lt->lt_table_id != ~0)
282 s = format (s, "VRF:%d ", lt->lt_table_id);
283 s = format (s, "L3-SW-IF:%d ", lt->lt_l3_sw_if_index);
286 if (lt->lt_bd_id != ~0)
288 s = format (s, "BD-ID:%d ", lt->lt_bd_id);
289 s = format (s, "L2-SW-IF:%d ", lt->lt_l2_sw_if_index);
296 * @brief CLI command to show LISP-GPE tenant.
298 static clib_error_t *
299 lisp_gpe_tenant_show (vlib_main_t * vm,
300 unformat_input_t * input, vlib_cli_command_t * cmd)
302 lisp_gpe_tenant_t *lt;
305 pool_foreach (lt, lisp_gpe_tenant_pool,
307 vlib_cli_output (vm, "%U", format_lisp_gpe_tenant, lt);
315 VLIB_CLI_COMMAND (lisp_gpe_tenant_command) = {
316 .path = "show lisp gpe tenant",
317 .short_help = "show lisp gpe tenant",
318 .function = lisp_gpe_tenant_show,
324 * fd.io coding-style-patch-verification: ON
327 * eval: (c-set-style "gnu")