2 * Copyright (c) 2018 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <plugins/gbp/gbp.h>
19 * Grouping of global data for the GBP source EPG classification feature
21 typedef struct gbp_fwd_main_t_
24 * Next nodes for L2 output features
26 u32 l2_input_feat_next[32];
29 static gbp_fwd_main_t gbp_fwd_main;
31 #define foreach_gbp_fwd \
37 #define _(sym,str) GBP_FWD_ERROR_##sym,
43 static char *gbp_fwd_error_strings[] = {
44 #define _(sym,string) string,
51 #define _(sym,str) GBP_FWD_NEXT_##sym,
58 * per-packet trace data
60 typedef struct gbp_fwd_trace_t_
62 /* per-pkt trace data */
68 gbp_fwd (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
70 u32 n_left_from, *from, *to_next;
74 n_left_from = frame->n_vectors;
75 from = vlib_frame_vector_args (frame);
77 while (n_left_from > 0)
81 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
83 while (n_left_from > 0 && n_left_to_next > 0)
85 u32 bi0, sw_if_index0, src_epg;
89 next0 = GBP_FWD_NEXT_DROP;
97 b0 = vlib_get_buffer (vm, bi0);
100 * lookup the uplink based on src EPG
102 src_epg = vnet_buffer2 (b0)->gbp.src_epg;
104 sw_if_index0 = gbp_epg_itf_lookup (src_epg);
106 if (~0 != sw_if_index0)
108 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
110 next0 = GBP_FWD_NEXT_OUTPUT;
114 * don't know the uplink interface for this EPG => drop
117 if (PREDICT_FALSE ((b0->flags & VLIB_BUFFER_IS_TRACED)))
119 gbp_fwd_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
120 t->src_epg = src_epg;
121 t->sw_if_index = sw_if_index0;
124 /* verify speculative enqueue, maybe switch current next frame */
125 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
126 to_next, n_left_to_next,
130 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
133 return frame->n_vectors;
136 /* packet trace format function */
138 format_gbp_fwd_trace (u8 * s, va_list * args)
140 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
141 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
142 gbp_fwd_trace_t *t = va_arg (*args, gbp_fwd_trace_t *);
144 s = format (s, "src-epg:%d", t->src_epg);
150 VLIB_REGISTER_NODE (gbp_fwd_node) = {
153 .vector_size = sizeof (u32),
154 .format_trace = format_gbp_fwd_trace,
155 .type = VLIB_NODE_TYPE_INTERNAL,
157 .n_errors = ARRAY_LEN(gbp_fwd_error_strings),
158 .error_strings = gbp_fwd_error_strings,
160 .n_next_nodes = GBP_FWD_N_NEXT,
163 [GBP_FWD_NEXT_DROP] = "error-drop",
164 [GBP_FWD_NEXT_OUTPUT] = "l2-output",
168 VLIB_NODE_FUNCTION_MULTIARCH (gbp_fwd_node, gbp_fwd);
172 static clib_error_t *
173 gbp_fwd_init (vlib_main_t * vm)
175 gbp_fwd_main_t *gpm = &gbp_fwd_main;
177 /* Initialize the feature next-node indices */
178 feat_bitmap_init_next_nodes (vm,
181 l2input_get_feat_names (),
182 gpm->l2_input_feat_next);
187 VLIB_INIT_FUNCTION (gbp_fwd_init);
190 * fd.io coding-style-patch-verification: ON
193 * eval: (c-set-style "gnu")