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>
20 #include <plugins/gbp/gbp_sclass.h>
22 #include <vnet/vxlan-gbp/vxlan_gbp.h>
23 #include <vlibmemory/api.h>
24 #include <vnet/fib/fib_table.h>
28 typedef struct gbp_vxlan_trace_t_
37 #define foreach_gbp_vxlan_input_next \
38 _(DROP, "error-drop") \
39 _(L2_INPUT, "l2-input") \
40 _(IP4_INPUT, "ip4-input") \
41 _(IP6_INPUT, "ip6-input")
45 #define _(s,n) GBP_VXLAN_INPUT_NEXT_##s,
46 foreach_gbp_vxlan_input_next
48 GBP_VXLAN_INPUT_N_NEXT,
49 } gbp_vxlan_input_next_t;
52 #define foreach_gbp_vxlan_error \
53 _(DECAPPED, "decapped") \
58 #define _(s,n) GBP_VXLAN_ERROR_##s,
59 foreach_gbp_vxlan_error
62 } gbp_vxlan_input_error_t;
64 static char *gbp_vxlan_error_strings[] = {
66 foreach_gbp_vxlan_error
71 gbp_vxlan_decap (vlib_main_t * vm,
72 vlib_node_runtime_t * node,
73 vlib_frame_t * from_frame, u8 is_ip4)
75 u32 n_left_to_next, n_left_from, next_index, *to_next, *from;
78 from = vlib_frame_vector_args (from_frame);
79 n_left_from = from_frame->n_vectors;
81 while (n_left_from > 0)
84 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
86 while (n_left_from > 0 && n_left_to_next > 0)
88 vxlan_gbp_header_t *vxlan_gbp0;
89 gbp_vxlan_input_next_t next0;
90 gbp_vxlan_tunnel_t *gt0;
95 bi0 = to_next[0] = from[0];
100 next0 = GBP_VXLAN_INPUT_NEXT_DROP;
102 b0 = vlib_get_buffer (vm, bi0);
104 vlib_buffer_get_current (b0) - sizeof (vxlan_gbp_header_t);
106 vni0 = vxlan_gbp_get_vni (vxlan_gbp0);
107 p = hash_get (gv_db, vni0);
109 if (PREDICT_FALSE (NULL == p))
112 next0 = GBP_VXLAN_INPUT_NEXT_DROP;
116 gt0 = gbp_vxlan_tunnel_get (p[0]);
118 vnet_buffer (b0)->sw_if_index[VLIB_RX] = gt0->gt_sw_if_index;
120 if (GBP_VXLAN_TUN_L2 == gt0->gt_layer)
122 * An L2 layer tunnel goes into the BD
124 next0 = GBP_VXLAN_INPUT_NEXT_L2_INPUT;
128 * An L3 layer tunnel needs to strip the L2 header
129 * an inject into the RD
131 ethernet_header_t *e0;
134 e0 = vlib_buffer_get_current (b0);
135 type0 = clib_net_to_host_u16 (e0->type);
138 case ETHERNET_TYPE_IP4:
139 next0 = GBP_VXLAN_INPUT_NEXT_IP4_INPUT;
141 case ETHERNET_TYPE_IP6:
142 next0 = GBP_VXLAN_INPUT_NEXT_IP6_INPUT;
147 vlib_buffer_advance (b0, sizeof (*e0));
152 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
154 gbp_vxlan_trace_t *tr;
156 tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
157 tr->dropped = (next0 == GBP_VXLAN_INPUT_NEXT_DROP);
159 tr->sw_if_index = (gt0 ? gt0->gt_sw_if_index : ~0);
160 tr->flags = vxlan_gbp_get_gpflags (vxlan_gbp0);
161 tr->sclass = vxlan_gbp_get_sclass (vxlan_gbp0);
164 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
165 to_next, n_left_to_next,
169 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
172 return from_frame->n_vectors;
175 VLIB_NODE_FN (gbp_vxlan4_input_node) (vlib_main_t * vm,
176 vlib_node_runtime_t * node,
177 vlib_frame_t * from_frame)
179 return gbp_vxlan_decap (vm, node, from_frame, 1);
183 format_gbp_vxlan_rx_trace (u8 * s, va_list * args)
185 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
186 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
187 gbp_vxlan_trace_t *t = va_arg (*args, gbp_vxlan_trace_t *);
189 s = format (s, "vni:%d dropped:%d rx:%d sclass:%d flags:%U",
190 t->vni, t->dropped, t->sw_if_index,
191 t->sclass, format_vxlan_gbp_header_gpflags, t->flags);
197 VLIB_REGISTER_NODE (gbp_vxlan4_input_node) =
199 .name = "gbp-vxlan4",
200 .vector_size = sizeof (u32),
201 .n_errors = GBP_VXLAN_N_ERROR,
202 .error_strings = gbp_vxlan_error_strings,
203 .n_next_nodes = GBP_VXLAN_INPUT_N_NEXT,
204 .format_trace = format_gbp_vxlan_rx_trace,
206 #define _(s,n) [GBP_VXLAN_INPUT_NEXT_##s] = n,
207 foreach_gbp_vxlan_input_next
214 * fd.io coding-style-patch-verification: ON
217 * eval: (c-set-style "gnu")