/* * gbp.h : Group Based Policy * * 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 #include #include #include #include #include #include #include #include #include #include #include /** * per-packet trace data */ typedef struct gbp_classify_trace_t_ { /* per-pkt trace data */ sclass_t sclass; } gbp_classify_trace_t; /* * determine the SRC EPG form the input port */ always_inline uword gbp_classify_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, gbp_src_classify_type_t type, dpo_proto_t dproto) { gbp_src_classify_main_t *gscm = &gbp_src_classify_main; u32 n_left_from, *from, *to_next; u32 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) { u32 next0, bi0, sw_if_index0; const gbp_endpoint_t *ge0; vlib_buffer_t *b0; sclass_t sclass0; 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_RX]; vnet_buffer2 (b0)->gbp.flags = VXLAN_GBP_GPFLAGS_NONE; if (GBP_SRC_CLASSIFY_NULL == type) { sclass0 = SCLASS_INVALID; next0 = vnet_l2_feature_next (b0, gscm->l2_input_feat_next[type], L2INPUT_FEAT_GBP_NULL_CLASSIFY); } else { if (DPO_PROTO_ETHERNET == dproto) { const ethernet_header_t *h0; h0 = vlib_buffer_get_current (b0); next0 = vnet_l2_feature_next (b0, gscm->l2_input_feat_next[type], L2INPUT_FEAT_GBP_SRC_CLASSIFY); ge0 = gbp_endpoint_find_mac (h0->src_address, vnet_buffer (b0)->l2.bd_index); } else if (DPO_PROTO_IP4 == dproto) { const ip4_header_t *h0; h0 = vlib_buffer_get_current (b0); ge0 = gbp_endpoint_find_ip4 (&h0->src_address, fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index0)); /* * Go straight to looukp, do not pass go, do not collect $200 */ next0 = 0; } else if (DPO_PROTO_IP6 == dproto) { const ip6_header_t *h0; h0 = vlib_buffer_get_current (b0); ge0 = gbp_endpoint_find_ip6 (&h0->src_address, fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP6, sw_if_index0)); /* * Go straight to lookup, do not pass go, do not collect $200 */ next0 = 0; } else { ge0 = NULL; next0 = 0; ASSERT (0); } if (PREDICT_TRUE (NULL != ge0)) sclass0 = ge0->ge_fwd.gef_sclass; else sclass0 = SCLASS_INVALID; } vnet_buffer2 (b0)->gbp.sclass = sclass0; if (PREDICT_FALSE ((b0->flags & VLIB_BUFFER_IS_TRACED))) { gbp_classify_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); t->sclass = sclass0; } 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; } VLIB_NODE_FN (gbp_src_classify_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return (gbp_classify_inline (vm, node, frame, GBP_SRC_CLASSIFY_PORT, DPO_PROTO_ETHERNET)); } VLIB_NODE_FN (gbp_null_classify_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return (gbp_classify_inline (vm, node, frame, GBP_SRC_CLASSIFY_NULL, DPO_PROTO_ETHERNET)); } VLIB_NODE_FN (gbp_ip4_src_classify_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return (gbp_classify_inline (vm, node, frame, GBP_SRC_CLASSIFY_PORT, DPO_PROTO_IP4)); } VLIB_NODE_FN (gbp_ip6_src_classify_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return (gbp_classify_inline (vm, node, frame, GBP_SRC_CLASSIFY_PORT, DPO_PROTO_IP6)); } /* packet trace format function */ static u8 * format_gbp_classify_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 *); gbp_classify_trace_t *t = va_arg (*args, gbp_classify_trace_t *); s = format (s, "sclass:%d", t->sclass); return s; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (gbp_null_classify_node) = { .name = "gbp-null-classify", .vector_size = sizeof (u32), .format_trace = format_gbp_classify_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = 0, .n_next_nodes = 0, }; VLIB_REGISTER_NODE (gbp_src_classify_node) = { .name = "gbp-src-classify", .vector_size = sizeof (u32), .format_trace = format_gbp_classify_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = 0, .n_next_nodes = 0, }; VLIB_REGISTER_NODE (gbp_ip4_src_classify_node) = { .name = "ip4-gbp-src-classify", .vector_size = sizeof (u32), .format_trace = format_gbp_classify_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = 0, .n_next_nodes = 1, .next_nodes = { [0] = "ip4-lookup" }, }; VLIB_REGISTER_NODE (gbp_ip6_src_classify_node) = { .name = "ip6-gbp-src-classify", .vector_size = sizeof (u32), .format_trace = format_gbp_classify_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_error
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