diff options
Diffstat (limited to 'src/vnet/qos/qos_mark.c')
| -rw-r--r-- | src/vnet/qos/qos_mark.c | 447 |
1 files changed, 447 insertions, 0 deletions
diff --git a/src/vnet/qos/qos_mark.c b/src/vnet/qos/qos_mark.c new file mode 100644 index 00000000000..cec7192b018 --- /dev/null +++ b/src/vnet/qos/qos_mark.c @@ -0,0 +1,447 @@ +/* + * 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/ip/ip.h> +#include <vnet/feature/feature.h> +#include <vnet/qos/qos_egress_map.h> +#include <vnet/qos/qos_mark.h> + +/** + * per-interface vector of which MAP is used by which interface + * for each output source + */ +index_t *qos_mark_configs[QOS_N_SOURCES]; + +void +qos_mark_ip_enable_disable (u32 sw_if_index, u8 enable) +{ + vnet_feature_enable_disable ("ip6-output", "ip6-qos-mark", + sw_if_index, enable, NULL, 0); + vnet_feature_enable_disable ("ip4-output", "ip4-qos-mark", + sw_if_index, enable, NULL, 0); +} + +void +qos_mark_vlan_enable_disable (u32 sw_if_index, u8 enable) +{ + vnet_feature_enable_disable ("interface-output", "vlan-qos-mark", + sw_if_index, enable, NULL, 0); +} + +void +qos_mark_mpls_enable_disable (u32 sw_if_index, u8 enable) +{ + vnet_feature_enable_disable ("mpls-output", "mpls-qos-mark", + sw_if_index, enable, NULL, 0); +} + +static void +qos_egress_map_feature_config (u32 sw_if_index, qos_source_t qs, u8 enable) +{ + switch (qs) + { + case QOS_SOURCE_EXT: + ASSERT (0); + break; + case QOS_SOURCE_VLAN: + qos_mark_vlan_enable_disable (sw_if_index, enable); + break; + case QOS_SOURCE_MPLS: + qos_mark_mpls_enable_disable (sw_if_index, enable); + break; + case QOS_SOURCE_IP: + qos_mark_ip_enable_disable (sw_if_index, enable); + break; + } +} + +always_inline qos_egress_map_t * +qos_egress_map_interface (u32 sw_if_index, qos_source_t output_source) +{ + ASSERT (vec_len (qos_mark_configs[output_source]) > sw_if_index); + + return pool_elt_at_index (qem_pool, + qos_mark_configs[output_source][sw_if_index]); +} + +/** + * per-packet trace data + */ +typedef struct qos_mark_trace_t_ +{ + /* per-pkt trace data */ + qos_bits_t bits; + qos_source_t input; + u32 used; +} qos_mark_trace_t; + +static inline uword +qos_mark_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame, qos_source_t output_source, int is_ip6) +{ + u32 n_left_from, *from, *to_next, next_index; + + next_index = 0; + n_left_from = frame->n_vectors; + from = vlib_frame_vector_args (frame); + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + qos_source_t input_source0; + ethernet_vlan_header_t *vlan0; + u32 sw_if_index0, next0, bi0; + qos_egress_map_t *qem0; + ip4_header_t *ip4_0; + ip6_header_t *ip6_0; + vlib_buffer_t *b0; + qos_bits_t qos0; + u8 *mpls_bytes_0; + u8 eos0; + + next0 = 0; + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + input_source0 = vnet_buffer2 (b0)->qos.source; + + qem0 = qos_egress_map_interface (sw_if_index0, output_source); + qos0 = qem0->qem_output[input_source0][vnet_buffer2 (b0)->qos.bits]; + + if (PREDICT_TRUE (b0->flags & VNET_BUFFER_F_QOS_DATA_VALID)) + { + /* there is a source of QoS recording for this packet */ + if (QOS_SOURCE_IP == output_source) + { + if (is_ip6) + { + ip6_0 = (vlib_buffer_get_current (b0) + + vnet_buffer (b0)->ip.save_rewrite_length); + + ip6_set_traffic_class_network_order (ip6_0, qos0); + } + else + { + ip4_0 = (vlib_buffer_get_current (b0) + + vnet_buffer (b0)->ip.save_rewrite_length); + if (PREDICT_FALSE (qos0 != ip4_0->tos)) + { + ip4_0->tos = qos0; + ip4_0->checksum = ip4_header_checksum (ip4_0); + } + } + } + else if (QOS_SOURCE_MPLS == output_source) + { + mpls_bytes_0 = (vlib_buffer_get_current (b0) + + vnet_buffer (b0)->mpls.save_rewrite_length); + + /* apply to all the labels in the stack */ + do + { + /* clear out the old COS bts */ + mpls_bytes_0[2] &= 0xf1; + /* OR in 3 bits of the mapped value */ + mpls_bytes_0[2] |= (qos0 & 0x7) << 1; + eos0 = mpls_bytes_0[2] & 0x1; + mpls_bytes_0 += 4; + } + while (!eos0); + } + else if (QOS_SOURCE_VLAN == output_source) + { + vlan0 = (vlib_buffer_get_current (b0) + + sizeof (ethernet_header_t)); + + ethernet_vlan_header_set_priority_net_order (vlan0, qos0); + } + } + vnet_feature_next (sw_if_index0, &next0, b0); + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + qos_mark_trace_t *t = + vlib_add_trace (vm, node, b0, sizeof (*t)); + t->bits = qos0; + t->input = input_source0; + t->used = (b0->flags & VNET_BUFFER_F_QOS_DATA_VALID); + } + + /* verify speculative enqueue, maybe switch current next frame */ + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, + to_next, n_left_to_next, + bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + return frame->n_vectors; +} + +/* packet trace format function */ +static u8 * +format_qos_mark_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + qos_mark_trace_t *t = va_arg (*args, qos_mark_trace_t *); + + s = format (s, "source:%U qos:%d used:%s", + format_qos_source, t->input, t->bits, (t->used ? "yes" : "no")); + + return s; +} + +static inline uword +ip4_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return (qos_mark_inline (vm, node, frame, QOS_SOURCE_IP, 0)); +} + +static inline uword +ip6_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return (qos_mark_inline (vm, node, frame, QOS_SOURCE_IP, 1)); +} + +static inline uword +mpls_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return (qos_mark_inline (vm, node, frame, QOS_SOURCE_MPLS, 0)); +} + +static inline uword +vlan_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return (qos_mark_inline (vm, node, frame, QOS_SOURCE_VLAN, 0)); +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ip4_qos_mark_node) = { + .function = ip4_qos_mark, + .name = "ip4-qos-mark", + .vector_size = sizeof (u32), + .format_trace = format_qos_mark_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = 0, + .n_next_nodes = 1, + + .next_nodes = { + [0] = "ip4-drop", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (ip4_qos_mark_node, ip4_qos_mark); + +VNET_FEATURE_INIT (ip4_qos_mark_node, static) = { + .arc_name = "ip4-output", + .node_name = "ip4-qos-mark", +}; + +VLIB_REGISTER_NODE (ip6_qos_mark_node) = { + .function = ip6_qos_mark, + .name = "ip6-qos-mark", + .vector_size = sizeof (u32), + .format_trace = format_qos_mark_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = 0, + .n_next_nodes = 1, + + .next_nodes = { + [0] = "ip6-drop", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (ip6_qos_mark_node, ip6_qos_mark); + +VNET_FEATURE_INIT (ip6_qos_mark_node, static) = { + .arc_name = "ip6-output", + .node_name = "ip6-qos-mark", +}; + +VLIB_REGISTER_NODE (mpls_qos_mark_node) = { + .function = mpls_qos_mark, + .name = "mpls-qos-mark", + .vector_size = sizeof (u32), + .format_trace = format_qos_mark_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = 0, + .n_next_nodes = 1, + + .next_nodes = { + [0] = "mpls-drop", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (mpls_qos_mark_node, mpls_qos_mark); + +VNET_FEATURE_INIT (mpls_qos_mark_node, static) = { + .arc_name = "mpls-output", + .node_name = "mpls-qos-mark", +}; +VLIB_REGISTER_NODE (vlan_qos_mark_node) = { + .function = vlan_qos_mark, + .name = "vlan-qos-mark", + .vector_size = sizeof (u32), + .format_trace = format_qos_mark_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = 0, + .n_next_nodes = 1, + + .next_nodes = { + [0] = "error-drop", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (vlan_qos_mark_node, vlan_qos_mark); + +VNET_FEATURE_INIT (vlan_qos_mark_node, static) = { + .arc_name = "interface-output", + .node_name = "vlan-qos-mark", +}; +/* *INDENT-ON* */ + +int +qos_mark_enable (u32 sw_if_index, + qos_source_t output_source, qos_egress_map_id_t mid) +{ + index_t qemi; + + vec_validate_init_empty (qos_mark_configs[output_source], + sw_if_index, INDEX_INVALID); + + qemi = qos_egress_map_find (mid); + + if (INDEX_INVALID == qemi) + return VNET_API_ERROR_NO_SUCH_TABLE; + + if (INDEX_INVALID == qos_mark_configs[output_source][sw_if_index]) + { + qos_egress_map_feature_config (sw_if_index, output_source, 1); + } + + qos_mark_configs[output_source][sw_if_index] = qemi; + + return (0); +} + +int +qos_mark_disable (u32 sw_if_index, qos_source_t output_source) +{ + if (vec_len (qos_mark_configs[output_source]) < sw_if_index) + return VNET_API_ERROR_NO_MATCHING_INTERFACE; + if (INDEX_INVALID == qos_mark_configs[output_source][sw_if_index]) + return VNET_API_ERROR_VALUE_EXIST; + + if (INDEX_INVALID != qos_mark_configs[output_source][sw_if_index]) + { + qos_egress_map_feature_config (sw_if_index, output_source, 0); + } + + qos_mark_configs[output_source][sw_if_index] = INDEX_INVALID; + + return (0); +} + +static clib_error_t * +qos_mark_cli (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + qos_egress_map_id_t map_id; + u32 sw_if_index, qs; + vnet_main_t *vnm; + int rv, enable; + + vnm = vnet_get_main (); + map_id = ~0; + qs = 0xff; + enable = 1; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "id %d", &map_id)) + ; + else if (unformat (input, "disable")) + enable = 0; + else if (unformat (input, "%U", unformat_qos_source, &qs)) + ; + else if (unformat (input, "%U", + unformat_vnet_sw_interface, vnm, &sw_if_index)) + ; + else + break; + } + + if (~0 == sw_if_index) + return clib_error_return (0, "interface must be specified"); + if (0xff == qs) + return clib_error_return (0, "output location must be specified"); + + if (enable) + rv = qos_mark_enable (sw_if_index, qs, map_id); + else + rv = qos_mark_disable (sw_if_index, qs); + + if (0 == rv) + return (NULL); + + return clib_error_return (0, "Failed to map interface"); +} + +/*? + * Apply a QoS egress mapping table to an interface for QoS marking packets + * at the given output protocol. + * + * @cliexpar + * @cliexcmd{qos egress interface GigEthernet0/9/0 id 0 output ip} + ?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (qos_egress_map_interface_command, static) = { + .path = "qos mark", + .short_help = "qos mark <SOURCE> <INTERFACE> id <MAP>", + .function = qos_mark_cli, + .is_mp_safe = 1, +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * +* Local Variables: +* eval: (c-set-style "gnu") +* End: +* +*/ |