/* * 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 <plugins/gbp/gbp_ext_itf.h> #include <plugins/gbp/gbp_bridge_domain.h> #include <plugins/gbp/gbp_route_domain.h> #include <plugins/gbp/gbp_itf.h> /** * Pool of GBP ext_itfs */ gbp_ext_itf_t *gbp_ext_itf_pool; /** * external interface configs keyed by sw_if_index */ index_t *gbp_ext_itf_db; #define GBP_EXT_ITF_ID 0x00000080 /** * logger */ vlib_log_class_t gx_logger; #define GBP_EXT_ITF_DBG(...) \ vlib_log_debug (gx_logger, __VA_ARGS__); u8 * format_gbp_ext_itf (u8 * s, va_list * args) { gbp_ext_itf_t *gx = va_arg (*args, gbp_ext_itf_t *); return (format (s, "%U%s in %U", format_gbp_itf_hdl, gx->gx_itf, (gx->gx_flags & GBP_EXT_ITF_F_ANON) ? " [anon]" : "", format_gbp_bridge_domain, gx->gx_bd)); } int gbp_ext_itf_add (u32 sw_if_index, u32 bd_id, u32 rd_id, u32 flags) { gbp_ext_itf_t *gx; index_t gxi; vec_validate_init_empty (gbp_ext_itf_db, sw_if_index, INDEX_INVALID); gxi = gbp_ext_itf_db[sw_if_index]; if (INDEX_INVALID == gxi) { gbp_route_domain_t *gr; fib_protocol_t fproto; index_t gbi, gri; gbi = gbp_bridge_domain_find_and_lock (bd_id); if (INDEX_INVALID == gbi) return (VNET_API_ERROR_NO_SUCH_ENTRY); gri = gbp_route_domain_find_and_lock (rd_id); if (INDEX_INVALID == gri) { gbp_bridge_domain_unlock (gbi); return (VNET_API_ERROR_NO_SUCH_ENTRY); } pool_get_zero (gbp_ext_itf_pool, gx); gxi = gx - gbp_ext_itf_pool; gr = gbp_route_domain_get (gri); gx->gx_bd = gbi; gx->gx_rd = gri; gbp_itf_hdl_reset (&gx->gx_itf); FOR_EACH_FIB_IP_PROTOCOL (fproto) { gx->gx_fib_index[fproto] = gr->grd_fib_index[fib_proto_to_dpo (fproto)]; } if (flags & GBP_EXT_ITF_F_ANON) { /* add interface to the BD */ gx->gx_itf = gbp_itf_l2_add_and_lock (sw_if_index, gbi); /* setup GBP L2 features on this interface */ gbp_itf_l2_set_input_feature (gx->gx_itf, L2INPUT_FEAT_GBP_LPM_ANON_CLASSIFY | L2INPUT_FEAT_LEARN); gbp_itf_l2_set_output_feature (gx->gx_itf, L2OUTPUT_FEAT_GBP_POLICY_LPM); } gx->gx_flags = flags; gbp_ext_itf_db[sw_if_index] = gxi; GBP_EXT_ITF_DBG ("add: %U", format_gbp_ext_itf, gx); return (0); } return (VNET_API_ERROR_ENTRY_ALREADY_EXISTS); } int gbp_ext_itf_delete (u32 sw_if_index) { gbp_ext_itf_t *gx; index_t gxi; if (vec_len (gbp_ext_itf_db) <= sw_if_index) return (VNET_API_ERROR_INVALID_SW_IF_INDEX); gxi = gbp_ext_itf_db[sw_if_index]; if (INDEX_INVALID != gxi) { gx = pool_elt_at_index (gbp_ext_itf_pool, gxi); GBP_EXT_ITF_DBG ("del: %U", format_gbp_ext_itf, gx); gbp_itf_unlock (&gx->gx_itf); gbp_route_domain_unlock (gx->gx_rd); gbp_bridge_domain_unlock (gx->gx_bd); gbp_ext_itf_db[sw_if_index] = INDEX_INVALID; pool_put (gbp_ext_itf_pool, gx); return (0); } return (VNET_API_ERROR_NO_SUCH_ENTRY); } static clib_error_t * gbp_ext_itf_add_del_cli (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; u32 sw_if_index = ~0, bd_id = ~0, rd_id = ~0, flags = 0; int add = 1; int rv; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "del")) add = 0; else if (unformat (line_input, "%U", unformat_vnet_sw_interface, vnet_get_main (), &sw_if_index)) ; else if (unformat (line_input, "bd %d", &bd_id)) ; else if (unformat (line_input, "rd %d", &rd_id)) ; else if (unformat (line_input, "anon-l3-out")) flags |= GBP_EXT_ITF_F_ANON; else return clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); } unformat_free (line_input); if (~0 == sw_if_index) return clib_error_return (0, "interface must be specified"); if (add) { if (~0 == bd_id) return clib_error_return (0, "BD-ID must be specified"); if (~0 == rd_id) return clib_error_return (0, "RD-ID must be specified"); rv = gbp_ext_itf_add (sw_if_index, bd_id, rd_id, flags); } else rv = gbp_ext_itf_delete (sw_if_index); switch (rv) { case 0: return 0; case VNET_API_ERROR_ENTRY_ALREADY_EXISTS: return clib_error_return (0, "interface already exists"); case VNET_API_ERROR_NO_SUCH_ENTRY: /* fallthrough */ case VNET_API_ERROR_INVALID_SW_IF_INDEX: return clib_error_return (0, "unknown interface"); default: return clib_error_return (0, "error %d", rv); } /* never reached */ return 0; } /*? * Add Group Based Interface as anonymous L3out interface * * @cliexpar * @cliexstart{gbp interface [del] anon-l3out <interface> bd <ID>} * @cliexend ?*/ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (gbp_itf_anon_l3out_add_del_node, static) = { .path = "gbp ext-itf", .short_help = "gbp ext-itf [del] <interface> bd <ID> rd <ID> [anon-l3-out]\n", .function = gbp_ext_itf_add_del_cli, }; /* *INDENT-ON* */ void gbp_ext_itf_walk (gbp_ext_itf_cb_t cb, void *ctx) { gbp_ext_itf_t *ge; /* *INDENT-OFF* */ pool_foreach (ge, gbp_ext_itf_pool) { if (!cb(ge, ctx)) break; } /* *INDENT-ON* */ } static walk_rc_t gbp_ext_itf_show_one (gbp_ext_itf_t * gx, void *ctx) { vlib_cli_output (ctx, " %U", format_gbp_ext_itf, gx); return (WALK_CONTINUE); } static clib_error_t * gbp_ext_itf_show (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { vlib_cli_output (vm, "External-Interfaces:"); gbp_ext_itf_walk (gbp_ext_itf_show_one, vm); return (NULL); } /*? * Show Group Based Policy external interface and derived information * * @cliexpar * @cliexstart{show gbp ext-itf} * @cliexend ?*/ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (gbp_ext_itf_show_node, static) = { .path = "show gbp ext-itf", .short_help = "show gbp ext-itf\n", .function = gbp_ext_itf_show, }; /* *INDENT-ON* */ static clib_error_t * gbp_ext_itf_init (vlib_main_t * vm) { gx_logger = vlib_log_register_class ("gbp", "ext-itf"); return (NULL); } VLIB_INIT_FUNCTION (gbp_ext_itf_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */