From 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Mon, 19 Dec 2016 23:05:39 +0100 Subject: Reorganize source tree to use single autotools instance Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion --- src/vnet/lisp-gpe/lisp_gpe_tenant.c | 330 ++++++++++++++++++++++++++++++++++++ 1 file changed, 330 insertions(+) create mode 100644 src/vnet/lisp-gpe/lisp_gpe_tenant.c (limited to 'src/vnet/lisp-gpe/lisp_gpe_tenant.c') diff --git a/src/vnet/lisp-gpe/lisp_gpe_tenant.c b/src/vnet/lisp-gpe/lisp_gpe_tenant.c new file mode 100644 index 00000000000..6abb7731830 --- /dev/null +++ b/src/vnet/lisp-gpe/lisp_gpe_tenant.c @@ -0,0 +1,330 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include + +/** + * The pool of all tenants + */ +static lisp_gpe_tenant_t *lisp_gpe_tenant_pool; + +/** + * The hash table of all tenants: key:{VNI}. + */ +uword *lisp_gpe_tenant_db; + +static lisp_gpe_tenant_t * +lisp_gpe_tenant_find (u32 vni) +{ + uword *p; + + p = hash_get (lisp_gpe_tenant_db, vni); + + if (NULL == p) + return (NULL); + + return (pool_elt_at_index (lisp_gpe_tenant_pool, p[0])); +} + +static lisp_gpe_tenant_t * +lisp_gpe_tenant_find_or_create_i (u32 vni) +{ + lisp_gpe_tenant_t *lt; + + lt = lisp_gpe_tenant_find (vni); + + if (NULL == lt) + { + pool_get (lisp_gpe_tenant_pool, lt); + memset (lt, 0, sizeof (*lt)); + + lt->lt_vni = vni; + lt->lt_table_id = ~0; + lt->lt_bd_id = ~0; + + hash_set (lisp_gpe_tenant_db, vni, lt - lisp_gpe_tenant_pool); + } + + return (lt); +} + +/** + * @brief Find or create a tenant for the given VNI + */ +u32 +lisp_gpe_tenant_find_or_create (u32 vni) +{ + lisp_gpe_tenant_t *lt; + + lt = lisp_gpe_tenant_find (vni); + + if (NULL == lt) + { + lt = lisp_gpe_tenant_find_or_create_i (vni); + } + + return (lt - lisp_gpe_tenant_pool); +} + +/** + * @brief If there are no more locks/users of te tenant, then delete it + */ +static void +lisp_gpe_tenant_delete_if_empty (lisp_gpe_tenant_t * lt) +{ + int i; + + for (i = 0; i < LISP_GPE_TENANT_LOCK_NUM; i++) + { + if (lt->lt_locks[i]) + return; + } + + hash_unset (lisp_gpe_tenant_db, lt->lt_vni); + pool_put (lisp_gpe_tenant_pool, lt); +} + +/** + * @brief Add/create and lock a new or find and lock the existing L3 + * interface for the tenant + * + * @paran vni The tenant's VNI + * @param table_id the Tenant's L3 table ID. + * + * @return the SW IF index of the L3 interface + */ +u32 +lisp_gpe_tenant_l3_iface_add_or_lock (u32 vni, u32 table_id) +{ + lisp_gpe_tenant_t *lt; + + lt = lisp_gpe_tenant_find_or_create_i (vni); + + if (~0 == lt->lt_table_id) + lt->lt_table_id = table_id; + + ASSERT (lt->lt_table_id == table_id); + + if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L3_IFACE]) + { + /* create the l3 interface since there are currently no users of it */ + lt->lt_l3_sw_if_index = + lisp_gpe_add_l3_iface (&lisp_gpe_main, vni, table_id); + } + + lt->lt_locks[LISP_GPE_TENANT_LOCK_L3_IFACE]++; + + return (lt->lt_l3_sw_if_index); +} + +/** + * @brief Release the lock held on the tenant's L3 interface + */ +void +lisp_gpe_tenant_l3_iface_unlock (u32 vni) +{ + lisp_gpe_tenant_t *lt; + + lt = lisp_gpe_tenant_find (vni); + + if (NULL == lt) + { + clib_warning ("No tenant for VNI %d", vni); + return; + } + + if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L3_IFACE]) + { + clib_warning ("No L3 interface for tenant VNI %d", vni); + return; + } + + lt->lt_locks[LISP_GPE_TENANT_LOCK_L3_IFACE]--; + + if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L3_IFACE]) + { + /* the last user has gone, so delete the l3 interface */ + lisp_gpe_del_l3_iface (&lisp_gpe_main, vni, lt->lt_table_id); + } + + /* + * If there are no more locks on any tenant managed resource, then + * this tenant is toast. + */ + lisp_gpe_tenant_delete_if_empty (lt); +} + +/** + * @brief Add/create and lock a new or find and lock the existing L2 + * interface for the tenant + * + * @paran vni The tenant's VNI + * @param table_id the Tenant's L2 Bridge Domain ID. + * + * @return the SW IF index of the L2 interface + */ +u32 +lisp_gpe_tenant_l2_iface_add_or_lock (u32 vni, u32 bd_id) +{ + lisp_gpe_tenant_t *lt; + + lt = lisp_gpe_tenant_find_or_create_i (vni); + + if (NULL == lt) + { + clib_warning ("No tenant for VNI %d", vni); + return ~0; + } + + if (~0 == lt->lt_bd_id) + lt->lt_bd_id = bd_id; + + ASSERT (lt->lt_bd_id == bd_id); + + if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L2_IFACE]) + { + /* create the l2 interface since there are currently no users of it */ + lt->lt_l2_sw_if_index = + lisp_gpe_add_l2_iface (&lisp_gpe_main, vni, bd_id); + } + + lt->lt_locks[LISP_GPE_TENANT_LOCK_L2_IFACE]++; + + return (lt->lt_l2_sw_if_index); +} + +/** + * @brief Release the lock held on the tenant's L3 interface + */ +void +lisp_gpe_tenant_l2_iface_unlock (u32 vni) +{ + lisp_gpe_tenant_t *lt; + + lt = lisp_gpe_tenant_find (vni); + + if (NULL == lt) + { + clib_warning ("No tenant for VNI %d", vni); + return; + } + + if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L2_IFACE]) + { + clib_warning ("No L2 interface for tenant VNI %d", vni); + return; + } + + lt->lt_locks[LISP_GPE_TENANT_LOCK_L2_IFACE]--; + + if (0 == lt->lt_locks[LISP_GPE_TENANT_LOCK_L2_IFACE]) + { + /* the last user has gone, so delete the l2 interface */ + lisp_gpe_del_l2_iface (&lisp_gpe_main, vni, lt->lt_bd_id); + } + + /* + * If there are no more locks on any tenant managed resource, then + * this tenant is toast. + */ + lisp_gpe_tenant_delete_if_empty (lt); +} + +/** + * @brief get a const pointer to the tenant object + */ +const lisp_gpe_tenant_t * +lisp_gpe_tenant_get (u32 index) +{ + return (pool_elt_at_index (lisp_gpe_tenant_pool, index)); +} + +/** + * @brief Flush/delete ALL the tenants + */ +void +lisp_gpe_tenant_flush (void) +{ + lisp_gpe_tenant_t *lt; + + /* *INDENT-OFF* */ + pool_foreach(lt, lisp_gpe_tenant_pool, + ({ + lisp_gpe_tenant_l2_iface_unlock(lt->lt_vni); + lisp_gpe_tenant_l3_iface_unlock(lt->lt_vni); + })); + /* *INDENT-ON* */ +} + +/** + * @brif Show/display one tenant + */ +static u8 * +format_lisp_gpe_tenant (u8 * s, va_list ap) +{ + const lisp_gpe_tenant_t *lt = va_arg (ap, lisp_gpe_tenant_t *); + + s = format (s, "VNI:%d ", lt->lt_vni); + + if (lt->lt_table_id != ~0) + { + s = format (s, "VRF:%d ", lt->lt_table_id); + s = format (s, "L3-SW-IF:%d ", lt->lt_l3_sw_if_index); + } + + if (lt->lt_bd_id != ~0) + { + s = format (s, "BD-ID:%d ", lt->lt_bd_id); + s = format (s, "L2-SW-IF:%d ", lt->lt_l2_sw_if_index); + } + + return (s); +} + +/** + * @brief CLI command to show LISP-GPE tenant. + */ +static clib_error_t * +lisp_gpe_tenant_show (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + lisp_gpe_tenant_t *lt; + + /* *INDENT-OFF* */ + pool_foreach (lt, lisp_gpe_tenant_pool, + ({ + vlib_cli_output (vm, "%U", format_lisp_gpe_tenant, lt); + })); + /* *INDENT-ON* */ + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_gpe_tenant_command) = { + .path = "show lisp gpe tenant", + .short_help = "show lisp gpe tenant", + .function = lisp_gpe_tenant_show, +}; +/* *INDENT-ON* */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg