/* * 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_record.h> #include <vnet/ip/ip.h> #include <vnet/ip/ip6_to_ip4.h> #include <vnet/feature/feature.h> #include <vnet/qos/qos_types.h> #include <vnet/l2/l2_input.h> #include <vnet/l2/feat_bitmap.h> /** * Per-interface, per-protocol vector of feature on/off configurations */ u8 *qos_record_configs[QOS_N_SOURCES]; u32 l2_qos_input_next[QOS_N_SOURCES][32]; static void qos_record_feature_config (u32 sw_if_index, qos_source_t input_source, u8 enable) { switch (input_source) { case QOS_SOURCE_IP: vnet_feature_enable_disable ("ip6-unicast", "ip6-qos-record", sw_if_index, enable, NULL, 0); vnet_feature_enable_disable ("ip6-multicast", "ip6-qos-record", sw_if_index, enable, NULL, 0); vnet_feature_enable_disable ("ip4-unicast", "ip4-qos-record", sw_if_index, enable, NULL, 0); vnet_feature_enable_disable ("ip4-multicast", "ip4-qos-record", sw_if_index, enable, NULL, 0); l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_L2_IP_QOS_RECORD, enable); break; case QOS_SOURCE_MPLS: vnet_feature_enable_disable ("mpls-input", "mpls-qos-record", sw_if_index, enable, NULL, 0); break; case QOS_SOURCE_VLAN: vnet_feature_enable_disable ("ip6-unicast", "vlan-ip6-qos-record", sw_if_index, enable, NULL, 0); vnet_feature_enable_disable ("ip6-multicast", "vlan-ip6-qos-record", sw_if_index, enable, NULL, 0); vnet_feature_enable_disable ("ip4-unicast", "vlan-ip4-qos-record", sw_if_index, enable, NULL, 0); vnet_feature_enable_disable ("ip4-multicast", "vlan-ip4-qos-record", sw_if_index, enable, NULL, 0); vnet_feature_enable_disable ("mpls-input", "vlan-mpls-qos-record", sw_if_index, enable, NULL, 0); break; case QOS_SOURCE_EXT: /* not a valid option for recording */ break; } } int qos_record_enable (u32 sw_if_index, qos_source_t input_source) { vec_validate (qos_record_configs[input_source], sw_if_index); if (0 == qos_record_configs[input_source][sw_if_index]) { qos_record_feature_config (sw_if_index, input_source, 1); } qos_record_configs[input_source][sw_if_index]++; return (0); } int qos_record_disable (u32 sw_if_index, qos_source_t input_source) { if (vec_len (qos_record_configs[input_source]) <= sw_if_index) return VNET_API_ERROR_NO_MATCHING_INTERFACE; if (0 == qos_record_configs[input_source][sw_if_index]) return VNET_API_ERROR_VALUE_EXIST; qos_record_configs[input_source][sw_if_index]--; if (0 == qos_record_configs[input_source][sw_if_index]) { qos_record_feature_config (sw_if_index, input_source, 0); } return (0); } void qos_record_walk (qos_record_walk_cb_t fn, void *c) { qos_source_t qs; FOR_EACH_QOS_SOURCE (qs) { u32 sw_if_index; vec_foreach_index (sw_if_index, qos_record_configs[qs]) { if (0 != qos_record_configs[qs][sw_if_index]) fn (sw_if_index, qs, c); } } } /* * Disable recording feature for all protocols when the interface * is deleted */ static clib_error_t * qos_record_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_record_disable (sw_if_index, qs) == 0); } } return (NULL); } VNET_SW_INTERFACE_ADD_DEL_FUNCTION (qos_record_ip_interface_add_del); clib_error_t * qos_record_init (vlib_main_t * vm) { qos_source_t qs; vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "l2-ip-qos-record"); /* Initialize the feature next-node indexes */ FOR_EACH_QOS_SOURCE (qs) feat_bitmap_init_next_nodes (vm, node->index, L2INPUT_N_FEAT, l2input_get_feat_names (), l2_qos_input_next[qs]); return 0; } VLIB_INIT_FUNCTION (qos_record_init); static clib_error_t * qos_record_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; u8 enable; qs = 0xff; enable = 1; 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)) ; else if (unformat (input, "%U", unformat_qos_source, &qs)) ; else if (unformat (input, "enable")) enable = 1; else if (unformat (input, "disable")) enable = 0; else break; } if (~0 == sw_if_index) return clib_error_return (0, "interface must be specified"); if (0xff == qs) return clib_error_return (0, "input location must be specified"); if (enable) qos_record_enable (sw_if_index, qs); else qos_record_disable (sw_if_index, qs); return (NULL); } /*? * Enable QoS bit recording 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 record ip GigEthernet0/1/0} ?*/ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (qos_record_command, static) = { .path = "qos record", .short_help = "qos record <record-source> <INTERFACE> [disable]", .function = qos_record_cli, .is_mp_safe = 1, }; /* *INDENT-ON* */ static void qos_record_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_record_configs[qs]) <= sw_if_index) continue; if (0 != (n_cfgs[qs] = qos_record_configs[qs][sw_if_index])) 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", format_qos_source, qs); } } } static clib_error_t * qos_record_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_record_configs[qs])); } for (ii = 0; ii < n_ints; ii++) { qos_record_show_one_interface (vm, ii); } } else qos_record_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_record_show_command, static) = { .path = "show qos record", .short_help = "show qos record [interface]", .function = qos_record_show, .is_mp_safe = 1, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */