diff options
Diffstat (limited to 'src/vnet/qos/qos_store.c')
| -rw-r--r-- | src/vnet/qos/qos_store.c | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/src/vnet/qos/qos_store.c b/src/vnet/qos/qos_store.c new file mode 100644 index 00000000000..18e79a33653 --- /dev/null +++ b/src/vnet/qos/qos_store.c @@ -0,0 +1,310 @@ +/* + * 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; + + 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 (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: + */ |