2 * Copyright (c) 2019 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.
15 #include <plugins/gbp/gbp_vxlan.h>
16 #include <plugins/gbp/gbp_itf.h>
17 #include <plugins/gbp/gbp_learn.h>
18 #include <plugins/gbp/gbp_bridge_domain.h>
19 #include <plugins/gbp/gbp_route_domain.h>
21 #include <vnet/vxlan-gbp/vxlan_gbp.h>
22 #include <vlibmemory/api.h>
23 #include <vnet/fib/fib_table.h>
27 typedef struct gbp_vxlan_trace_t_
36 #define foreach_gbp_vxlan_input_next \
37 _(DROP, "error-drop") \
38 _(L2_INPUT, "l2-input") \
39 _(IP4_INPUT, "ip4-input") \
40 _(IP6_INPUT, "ip6-input")
44 #define _(s,n) GBP_VXLAN_INPUT_NEXT_##s,
45 foreach_gbp_vxlan_input_next
47 GBP_VXLAN_INPUT_N_NEXT,
48 } gbp_vxlan_input_next_t;
51 #define foreach_gbp_vxlan_error \
52 _(DECAPPED, "decapped") \
57 #define _(s,n) GBP_VXLAN_ERROR_##s,
58 foreach_gbp_vxlan_error
61 } gbp_vxlan_input_error_t;
63 static char *gbp_vxlan_error_strings[] = {
65 foreach_gbp_vxlan_error
70 gbp_vxlan_decap (vlib_main_t * vm,
71 vlib_node_runtime_t * node,
72 vlib_frame_t * from_frame, u8 is_ip4)
74 u32 n_left_to_next, n_left_from, next_index, *to_next, *from;
77 from = vlib_frame_vector_args (from_frame);
78 n_left_from = from_frame->n_vectors;
80 while (n_left_from > 0)
83 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
85 while (n_left_from > 0 && n_left_to_next > 0)
87 vxlan_gbp_header_t *vxlan_gbp0;
88 gbp_vxlan_input_next_t next0;
89 gbp_vxlan_tunnel_t *gt0;
94 bi0 = to_next[0] = from[0];
99 next0 = GBP_VXLAN_INPUT_NEXT_DROP;
101 b0 = vlib_get_buffer (vm, bi0);
103 vlib_buffer_get_current (b0) - sizeof (vxlan_gbp_header_t);
105 vni0 = vxlan_gbp_get_vni (vxlan_gbp0);
106 p = hash_get (gv_db, vni0);
108 if (PREDICT_FALSE (NULL == p))
111 next0 = GBP_VXLAN_INPUT_NEXT_DROP;
115 gt0 = gbp_vxlan_tunnel_get (p[0]);
117 vnet_buffer (b0)->sw_if_index[VLIB_RX] = gt0->gt_sw_if_index;
119 if (GBP_VXLAN_TUN_L2 == gt0->gt_layer)
121 * An L2 layer tunnel goes into the BD
123 next0 = GBP_VXLAN_INPUT_NEXT_L2_INPUT;
127 * An L3 layer tunnel needs to strip the L2 header
128 * an inject into the RD
130 ethernet_header_t *e0;
133 e0 = vlib_buffer_get_current (b0);
134 type0 = clib_net_to_host_u16 (e0->type);
137 case ETHERNET_TYPE_IP4:
138 next0 = GBP_VXLAN_INPUT_NEXT_IP4_INPUT;
140 case ETHERNET_TYPE_IP6:
141 next0 = GBP_VXLAN_INPUT_NEXT_IP6_INPUT;
146 vlib_buffer_advance (b0, sizeof (*e0));
151 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
153 gbp_vxlan_trace_t *tr;
155 tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
156 tr->dropped = (next0 == GBP_VXLAN_INPUT_NEXT_DROP);
158 tr->sw_if_index = (gt0 ? gt0->gt_sw_if_index : ~0);
159 tr->flags = vxlan_gbp_get_gpflags (vxlan_gbp0);
160 tr->sclass = vxlan_gbp_get_sclass (vxlan_gbp0);
163 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
164 to_next, n_left_to_next,
168 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
171 return from_frame->n_vectors;
174 VLIB_NODE_FN (gbp_vxlan4_input_node) (vlib_main_t * vm,
175 vlib_node_runtime_t * node,
176 vlib_frame_t * from_frame)
178 return gbp_vxlan_decap (vm, node, from_frame, 1);
182 format_gbp_vxlan_rx_trace (u8 * s, va_list * args)
184 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
185 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
186 gbp_vxlan_trace_t *t = va_arg (*args, gbp_vxlan_trace_t *);
188 s = format (s, "vni:%d dropped:%d rx:%d sclass:%d flags:%U",
189 t->vni, t->dropped, t->sw_if_index,
190 t->sclass, format_vxlan_gbp_header_gpflags, t->flags);
196 VLIB_REGISTER_NODE (gbp_vxlan4_input_node) =
198 .name = "gbp-vxlan4",
199 .vector_size = sizeof (u32),
200 .n_errors = GBP_VXLAN_N_ERROR,
201 .error_strings = gbp_vxlan_error_strings,
202 .n_next_nodes = GBP_VXLAN_INPUT_N_NEXT,
203 .format_trace = format_gbp_vxlan_rx_trace,
205 #define _(s,n) [GBP_VXLAN_INPUT_NEXT_##s] = n,
206 foreach_gbp_vxlan_input_next
213 * fd.io coding-style-patch-verification: ON
216 * eval: (c-set-style "gnu")