/* * 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 <vnet/qos/qos_store.h> #include <vnet/ip/ip.h> #include <vnet/feature/feature.h> /** * QoS Store configuration */ typedef struct qos_store_t_ { u8 qst_n_cfgs; qos_bits_t qst_value; } qos_store_t; /** * Per-interface, per-protocol vector of feature on/off configurations */ qos_store_t *qos_store_configs[QOS_N_SOURCES]; static void qos_store_feature_config (u32 sw_if_index, qos_source_t input_source, u8 enable, qos_bits_t value) { switch (input_source) { case QOS_SOURCE_IP: vnet_feature_enable_disable ("ip6-unicast", "ip6-qos-store", sw_if_index, enable, &value, sizeof (value)); vnet_feature_enable_disable ("ip6-multicast", "ip6-qos-store", sw_if_index, enable, &value, sizeof (value)); vnet_feature_enable_disable ("ip4-unicast", "ip4-qos-store", sw_if_index, enable, &value, sizeof (value)); vnet_feature_enable_disable ("ip4-multicast", "ip4-qos-store", sw_if_index, enable, &value, sizeof (value)); break; case QOS_SOURCE_MPLS: case QOS_SOURCE_VLAN: case QOS_SOURCE_EXT: /* not a valid option for storeing */ break; } } int qos_store_enable (u32 sw_if_index, qos_source_t input_source, qos_bits_t value) { qos_store_t *qst; if (QOS_SOURCE_IP != input_source) return VNET_API_ERROR_UNIMPLEMENTED; vec_validate (qos_store_configs[input_source], sw_if_index); qst = &qos_store_configs[input_source][sw_if_index]; if (0 == qst->qst_n_cfgs) { qst->qst_value = value; qos_store_feature_config (sw_if_index, input_source, 1, value); } qst->qst_n_cfgs++; return (0); } int qos_store_disable (u32 sw_if_index, qos_source_t input_source) { qos_store_t *qst; if (vec_len (qos_store_configs[input_source]) <= sw_if_index) return VNET_API_ERROR_NO_MATCHING_INTERFACE; qst = &qos_store_configs[input_source][sw_if_index]; if (0 == qst->qst_n_cfgs) return VNET_API_ERROR_VALUE_EXIST; qst->qst_n_cfgs--; if (0 == qst->qst_n_cfgs) { qos_store_feature_config (sw_if_index, input_source, 0, qst->qst_value); } return (0); } void qos_store_walk (qos_store_walk_cb_t fn, void *c) { qos_source_t qs; FOR_EACH_QOS_SOURCE (qs) { qos_store_t *qst; u32 sw_if_index; vec_foreach_index (sw_if_index, qos_store_configs[qs]) { qst = &qos_store_configs[qs][sw_if_index]; if (0 != qst->qst_n_cfgs) fn (sw_if_index, qs, qst->qst_value, c); } } } /* * Disable storeing feature for all protocols when the interface * is deleted */ static clib_error_t * qos_store_ip_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add) { if (!is_add) { qos_source_t qs; FOR_EACH_QOS_SOURCE (qs) { while (qos_store_disable (sw_if_index, qs) == 0); } } return (NULL); } VNET_SW_INTERFACE_ADD_DEL_FUNCTION (qos_store_ip_interface_add_del); clib_error_t * qos_store_init (vlib_main_t * vm) { return 0; } VLIB_INIT_FUNCTION (qos_store_init); static clib_error_t * qos_store_cli (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { vnet_main_t *vnm = vnet_get_main (); u32 sw_if_index, qs, value; u8 enable; qs = 0xff; enable = 1; sw_if_index = ~0; value = ~0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index)) ; else if (unformat (input, "%U", unformat_qos_source, &qs)) ; else if (unformat (input, "enable")) enable = 1; else if (unformat (input, "disable")) enable = 0; else if (unformat (input, "value &d", &value)) ; else break; } if (~0 == sw_if_index) return clib_error_return (0, "interface must be specified"); if (~0 == value) return clib_error_return (0, "value to be stored must be specified"); if (0xff == qs) return clib_error_return (0, "input location must be specified"); if (enable) qos_store_enable (sw_if_index, qs, value); else qos_store_disable (sw_if_index, qs); return (NULL); } /*? * Enable QoS bit storeing on an interface using the packet's input DSCP bits * Which input QoS bits to use are either; IP, MPLS or VLAN. If more than * one protocol is chosen (which is foolish) the higher layers override the * lower. * * @cliexpar * @cliexcmd{qos store ip GigEthernet0/1/0} ?*/ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (qos_store_command, static) = { .path = "qos store", .short_help = "qos store <store-source> <INTERFACE> [disable]", .function = qos_store_cli, .is_mp_safe = 1, }; /* *INDENT-ON* */ static void qos_store_show_one_interface (vlib_main_t * vm, u32 sw_if_index) { u8 n_cfgs[QOS_N_SOURCES] = { }; qos_source_t qs; bool set; set = false; FOR_EACH_QOS_SOURCE (qs) { if (vec_len (qos_store_configs[qs]) <= sw_if_index) continue; if (0 != (n_cfgs[qs] = qos_store_configs[qs][sw_if_index].qst_n_cfgs)) set = true; } if (set) { vlib_cli_output (vm, " %U:", format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index); FOR_EACH_QOS_SOURCE (qs) { if (n_cfgs[qs] != 0) vlib_cli_output (vm, " %U -> %d", format_qos_source, qs, qos_store_configs[qs][sw_if_index].qst_value); } } } static clib_error_t * qos_store_show (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { vnet_main_t *vnm = vnet_get_main (); qos_source_t qs; u32 sw_if_index; sw_if_index = ~0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index)) ; } if (~0 == sw_if_index) { u32 ii, n_ints = 0; FOR_EACH_QOS_SOURCE (qs) { n_ints = clib_max (n_ints, vec_len (qos_store_configs[qs])); } for (ii = 0; ii < n_ints; ii++) { qos_store_show_one_interface (vm, ii); } } else qos_store_show_one_interface (vm, sw_if_index); return (NULL); } /*? * Show Egress Qos Maps * * @cliexpar * @cliexcmd{show qos egress map} ?*/ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (qos_store_show_command, static) = { .path = "show qos store", .short_help = "show qos store [interface]", .function = qos_store_show, .is_mp_safe = 1, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */