From 93cc3ee3b3a9c9224a1446625882205f3282a949 Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Wed, 10 Oct 2018 07:22:51 -0700 Subject: GBP Endpoint Learning Learning GBP endpoints over vxlan-gbp tunnels Change-Id: I1db9fda5a16802d9ad8b4efd4e475614f3b21502 Signed-off-by: Neale Ranns --- src/plugins/gbp/gbp_bridge_domain.c | 368 ++++++++++++++++++++++++++++++++++++ 1 file changed, 368 insertions(+) create mode 100644 src/plugins/gbp/gbp_bridge_domain.c (limited to 'src/plugins/gbp/gbp_bridge_domain.c') diff --git a/src/plugins/gbp/gbp_bridge_domain.c b/src/plugins/gbp/gbp_bridge_domain.c new file mode 100644 index 00000000000..b7812eb1645 --- /dev/null +++ b/src/plugins/gbp/gbp_bridge_domain.c @@ -0,0 +1,368 @@ +/* + * Copyright (c) 2018 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 +#include + +#include +#include +#include +#include +#include +#include + +/** + * Pool of GBP bridge_domains + */ +gbp_bridge_domain_t *gbp_bridge_domain_pool; + +/** + * DB of bridge_domains + */ +typedef struct gbp_bridge_domain_db_t +{ + uword *gbd_by_bd_id; +} gbp_bridge_domain_db_t; + +static gbp_bridge_domain_db_t gbp_bridge_domain_db; + +/** + * logger + */ +vlib_log_class_t gb_logger; + +#define GBP_BD_DBG(...) \ + vlib_log_debug (gb_logger, __VA_ARGS__); + +gbp_bridge_domain_t * +gbp_bridge_domain_get (index_t i) +{ + return (pool_elt_at_index (gbp_bridge_domain_pool, i)); +} + +static void +gbp_bridge_domain_lock (index_t i) +{ + gbp_bridge_domain_t *gb; + + gb = gbp_bridge_domain_get (i); + gb->gb_locks++; +} + +static index_t +gbp_bridge_domain_find (u32 bd_id) +{ + uword *p; + + p = hash_get (gbp_bridge_domain_db.gbd_by_bd_id, bd_id); + + if (NULL != p) + return p[0]; + + return (INDEX_INVALID); +} + +index_t +gbp_bridge_domain_find_and_lock (u32 bd_id) +{ + uword *p; + + p = hash_get (gbp_bridge_domain_db.gbd_by_bd_id, bd_id); + + if (NULL != p) + { + gbp_bridge_domain_lock (p[0]); + return p[0]; + } + return (INDEX_INVALID); +} + +static void +gbp_bridge_domain_db_add (gbp_bridge_domain_t * gb) +{ + index_t gbi = gb - gbp_bridge_domain_pool; + + hash_set (gbp_bridge_domain_db.gbd_by_bd_id, gb->gb_bd_id, gbi); +} + +static void +gbp_bridge_domain_db_remove (gbp_bridge_domain_t * gb) +{ + hash_unset (gbp_bridge_domain_db.gbd_by_bd_id, gb->gb_bd_id); +} + +int +gbp_bridge_domain_add_and_lock (u32 bd_id, + u32 bvi_sw_if_index, u32 uu_fwd_sw_if_index) +{ + gbp_bridge_domain_t *gb; + index_t gbi; + + gbi = gbp_bridge_domain_find (bd_id); + + if (INDEX_INVALID == gbi) + { + u32 bd_index; + + bd_index = bd_find_index (&bd_main, bd_id); + + if (~0 == bd_index) + return (VNET_API_ERROR_BD_NOT_MODIFIABLE); + + /* + * unset learning in the bridge + */ + bd_set_flags (vlib_get_main (), bd_index, L2_LEARN, 0); + + pool_get (gbp_bridge_domain_pool, gb); + memset (gb, 0, sizeof (*gb)); + + gb->gb_bd_id = bd_id; + gb->gb_bd_index = bd_index; + gb->gb_uu_fwd_sw_if_index = uu_fwd_sw_if_index; + gb->gb_bvi_sw_if_index = bvi_sw_if_index; + gb->gb_locks = 1; + + /* + * Set the BVI and uu-flood interfaces into the BD + */ + set_int_l2_mode (vlib_get_main (), vnet_get_main (), + MODE_L2_BRIDGE, gb->gb_bvi_sw_if_index, + bd_index, L2_BD_PORT_TYPE_BVI, 0, 0); + if (~0 != gb->gb_uu_fwd_sw_if_index) + set_int_l2_mode (vlib_get_main (), vnet_get_main (), + MODE_L2_BRIDGE, gb->gb_uu_fwd_sw_if_index, + bd_index, L2_BD_PORT_TYPE_UU_FWD, 0, 0); + + /* + * Add the BVI's MAC to the L2FIB + */ + l2fib_add_entry (vnet_sw_interface_get_hw_address + (vnet_get_main (), gb->gb_bvi_sw_if_index), + gb->gb_bd_index, gb->gb_bvi_sw_if_index, + (L2FIB_ENTRY_RESULT_FLAG_STATIC | + L2FIB_ENTRY_RESULT_FLAG_BVI)); + + gbp_bridge_domain_db_add (gb); + } + else + { + gb = gbp_bridge_domain_get (gbi); + gb->gb_locks++; + } + + GBP_BD_DBG ("add: %U", format_gbp_bridge_domain, gb); + + return (0); +} + +void +gbp_bridge_domain_unlock (index_t index) +{ + gbp_bridge_domain_t *gb; + + gb = gbp_bridge_domain_get (index); + + gb->gb_locks--; + + if (0 == gb->gb_locks) + { + GBP_BD_DBG ("destroy: %U", format_gbp_bridge_domain, gb); + + l2fib_del_entry (vnet_sw_interface_get_hw_address + (vnet_get_main (), gb->gb_bvi_sw_if_index), + gb->gb_bd_index, gb->gb_bvi_sw_if_index); + + set_int_l2_mode (vlib_get_main (), vnet_get_main (), + MODE_L3, gb->gb_bvi_sw_if_index, + gb->gb_bd_index, L2_BD_PORT_TYPE_BVI, 0, 0); + if (~0 != gb->gb_uu_fwd_sw_if_index) + set_int_l2_mode (vlib_get_main (), vnet_get_main (), + MODE_L3, gb->gb_uu_fwd_sw_if_index, + gb->gb_bd_index, L2_BD_PORT_TYPE_UU_FWD, 0, 0); + + gbp_bridge_domain_db_remove (gb); + + pool_put (gbp_bridge_domain_pool, gb); + } +} + +int +gbp_bridge_domain_delete (u32 bd_id) +{ + index_t gbi; + + GBP_BD_DBG ("del: %d", bd_id); + gbi = gbp_bridge_domain_find (bd_id); + + if (INDEX_INVALID != gbi) + { + GBP_BD_DBG ("del: %U", format_gbp_bridge_domain, + gbp_bridge_domain_get (gbi)); + gbp_bridge_domain_unlock (gbi); + + return (0); + } + + return (VNET_API_ERROR_NO_SUCH_ENTRY); +} + +void +gbp_bridge_domain_walk (gbp_bridge_domain_cb_t cb, void *ctx) +{ + gbp_bridge_domain_t *gbpe; + + /* *INDENT-OFF* */ + pool_foreach(gbpe, gbp_bridge_domain_pool, + { + if (!cb(gbpe, ctx)) + break; + }); + /* *INDENT-ON* */ +} + +static clib_error_t * +gbp_bridge_domain_cli (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + vnet_main_t *vnm = vnet_get_main (); + u32 uu_fwd_sw_if_index = ~0; + u32 bvi_sw_if_index = ~0; + u32 bd_id = ~0; + u8 add = 1; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "bvi %U", unformat_vnet_sw_interface, + vnm, &bvi_sw_if_index)) + ; + else if (unformat (input, "uu-flood %U", unformat_vnet_sw_interface, + vnm, &uu_fwd_sw_if_index)) + ; + else if (unformat (input, "add")) + add = 1; + else if (unformat (input, "del")) + add = 0; + else if (unformat (input, "bd %d", &bd_id)) + ; + else + break; + } + + if (~0 == bd_id) + return clib_error_return (0, "EPG-ID must be specified"); + + if (add) + { + if (~0 == bvi_sw_if_index) + return clib_error_return (0, "interface must be specified"); + + gbp_bridge_domain_add_and_lock (bd_id, + bvi_sw_if_index, uu_fwd_sw_if_index); + } + else + gbp_bridge_domain_delete (bd_id); + + return (NULL); +} + +/*? + * Configure a GBP bridge-domain + * + * @cliexpar + * @cliexstart{set gbp bridge-domain [del] bd bvi uu-flood } + * @cliexend + ?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (gbp_bridge_domain_cli_node, static) = { + .path = "gbp bridge-domain", + .short_help = "gbp bridge-domain [del] epg bd bvi uu-flood ", + .function = gbp_bridge_domain_cli, +}; + +u8 * +format_gbp_bridge_domain (u8 * s, va_list * args) +{ + gbp_bridge_domain_t *gb = va_arg (*args, gbp_bridge_domain_t*); + vnet_main_t *vnm = vnet_get_main (); + + if (NULL != gb) + s = format (s, "[%d] bd:[%d,%d], bvi:%U uu-flood:%U locks:%d", + gb - gbp_bridge_domain_pool, + gb->gb_bd_id, + gb->gb_bd_index, + format_vnet_sw_if_index_name, vnm, gb->gb_bvi_sw_if_index, + format_vnet_sw_if_index_name, vnm, gb->gb_uu_fwd_sw_if_index, + gb->gb_locks); + else + s = format (s, "NULL"); + + return (s); +} + +static int +gbp_bridge_domain_show_one (gbp_bridge_domain_t *gb, void *ctx) +{ + vlib_main_t *vm; + + vm = ctx; + vlib_cli_output (vm, " %U",format_gbp_bridge_domain, gb); + + return (1); +} + +static clib_error_t * +gbp_bridge_domain_show (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + vlib_cli_output (vm, "Bridge-Domains:"); + gbp_bridge_domain_walk (gbp_bridge_domain_show_one, vm); + + return (NULL); +} + + +/*? + * Show Group Based Policy Bridge_Domains and derived information + * + * @cliexpar + * @cliexstart{show gbp bridge_domain} + * @cliexend + ?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (gbp_bridge_domain_show_node, static) = { + .path = "show gbp bridge-domain", + .short_help = "show gbp bridge-domain\n", + .function = gbp_bridge_domain_show, +}; +/* *INDENT-ON* */ + +static clib_error_t * +gbp_bridge_domain_init (vlib_main_t * vm) +{ + gb_logger = vlib_log_register_class ("gbp", "bd"); + + return (NULL); +} + +VLIB_INIT_FUNCTION (gbp_bridge_domain_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg