2 * Copyright (c) 2016 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 <vnet/dpo/interface_rx_dpo.h>
17 #include <vnet/fib/fib_node.h>
18 #include <vnet/l2/l2_input.h>
20 interface_rx_dpo_t *interface_rx_dpo_pool;
23 * The 'DB' of interface DPOs.
24 * There is only one per-interface per-protocol, so this is a per-interface
27 static index_t *interface_rx_dpo_db[DPO_PROTO_NUM];
29 static interface_rx_dpo_t *
30 interface_rx_dpo_alloc (void)
32 interface_rx_dpo_t *ido;
34 pool_get(interface_rx_dpo_pool, ido);
39 static inline interface_rx_dpo_t *
40 interface_rx_dpo_get_from_dpo (const dpo_id_t *dpo)
42 ASSERT(DPO_INTERFACE_RX == dpo->dpoi_type);
44 return (interface_rx_dpo_get(dpo->dpoi_index));
48 interface_rx_dpo_get_index (interface_rx_dpo_t *ido)
50 return (ido - interface_rx_dpo_pool);
54 interface_rx_dpo_lock (dpo_id_t *dpo)
56 interface_rx_dpo_t *ido;
58 ido = interface_rx_dpo_get_from_dpo(dpo);
63 interface_rx_dpo_unlock (dpo_id_t *dpo)
65 interface_rx_dpo_t *ido;
67 ido = interface_rx_dpo_get_from_dpo(dpo);
70 if (0 == ido->ido_locks)
72 interface_rx_dpo_db[ido->ido_proto][ido->ido_sw_if_index] =
74 pool_put(interface_rx_dpo_pool, ido);
79 * interface_rx_dpo_add_or_lock
81 * Add/create and lock a new or lock an existing for the interface DPO
82 * on the interface and protocol given
85 interface_rx_dpo_add_or_lock (dpo_proto_t proto,
89 interface_rx_dpo_t *ido;
91 vec_validate_init_empty(interface_rx_dpo_db[proto],
95 if (INDEX_INVALID == interface_rx_dpo_db[proto][sw_if_index])
97 ido = interface_rx_dpo_alloc();
99 ido->ido_sw_if_index = sw_if_index;
100 ido->ido_proto = proto;
102 interface_rx_dpo_db[proto][sw_if_index] =
103 interface_rx_dpo_get_index(ido);
107 ido = interface_rx_dpo_get(interface_rx_dpo_db[proto][sw_if_index]);
110 dpo_set(dpo, DPO_INTERFACE_RX, proto, interface_rx_dpo_get_index(ido));
114 static clib_error_t *
115 interface_rx_dpo_interface_state_change (vnet_main_t * vnm,
124 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(
125 interface_rx_dpo_interface_state_change);
128 * @brief Registered callback for HW interface state changes
130 static clib_error_t *
131 interface_rx_dpo_hw_interface_state_change (vnet_main_t * vnm,
138 VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(
139 interface_rx_dpo_hw_interface_state_change);
141 static clib_error_t *
142 interface_rx_dpo_interface_delete (vnet_main_t * vnm,
149 VNET_SW_INTERFACE_ADD_DEL_FUNCTION(
150 interface_rx_dpo_interface_delete);
153 format_interface_rx_dpo (u8* s, va_list *ap)
155 index_t index = va_arg(*ap, index_t);
156 CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
157 vnet_main_t * vnm = vnet_get_main();
158 interface_rx_dpo_t *ido = interface_rx_dpo_get(index);
160 return (format(s, "%U-rx-dpo: %U",
161 format_vnet_sw_interface_name,
163 vnet_get_sw_interface(vnm, ido->ido_sw_if_index),
164 format_dpo_proto, ido->ido_proto));
168 interface_rx_dpo_mem_show (void)
170 fib_show_memory_usage("Interface",
171 pool_elts(interface_rx_dpo_pool),
172 pool_len(interface_rx_dpo_pool),
173 sizeof(interface_rx_dpo_t));
177 const static dpo_vft_t interface_rx_dpo_vft = {
178 .dv_lock = interface_rx_dpo_lock,
179 .dv_unlock = interface_rx_dpo_unlock,
180 .dv_format = format_interface_rx_dpo,
181 .dv_mem_show = interface_rx_dpo_mem_show,
185 * @brief The per-protocol VLIB graph nodes that are assigned to a glean
188 * this means that these graph nodes are ones from which a glean is the
189 * parent object in the DPO-graph.
191 const static char* const interface_rx_dpo_ip4_nodes[] =
193 "interface-rx-dpo-ip4",
196 const static char* const interface_rx_dpo_ip6_nodes[] =
198 "interface-rx-dpo-ip6",
201 const static char* const interface_rx_dpo_l2_nodes[] =
203 "interface-rx-dpo-l2",
207 const static char* const * const interface_rx_dpo_nodes[DPO_PROTO_NUM] =
209 [DPO_PROTO_IP4] = interface_rx_dpo_ip4_nodes,
210 [DPO_PROTO_IP6] = interface_rx_dpo_ip6_nodes,
211 [DPO_PROTO_ETHERNET] = interface_rx_dpo_l2_nodes,
212 [DPO_PROTO_MPLS] = NULL,
216 interface_rx_dpo_module_init (void)
218 dpo_register(DPO_INTERFACE_RX,
219 &interface_rx_dpo_vft,
220 interface_rx_dpo_nodes);
224 * @brief Interface DPO trace data
226 typedef struct interface_rx_dpo_trace_t_
229 } interface_rx_dpo_trace_t;
231 typedef enum interface_rx_dpo_next_t_
233 INTERFACE_RX_DPO_DROP = 0,
234 INTERFACE_RX_DPO_INPUT = 1,
235 } interface_rx_dpo_next_t;
238 interface_rx_dpo_inline (vlib_main_t * vm,
239 vlib_node_runtime_t * node,
240 vlib_frame_t * from_frame,
243 u32 n_left_from, next_index, * from, * to_next;
244 u32 thread_index = vm->thread_index;
245 vnet_interface_main_t *im;
247 im = &vnet_get_main ()->interface_main;
248 from = vlib_frame_vector_args (from_frame);
249 n_left_from = from_frame->n_vectors;
251 next_index = INTERFACE_RX_DPO_INPUT;
253 while (n_left_from > 0)
257 vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
259 while (n_left_from >= 4 && n_left_to_next > 2)
261 const interface_rx_dpo_t *ido0, *ido1;
262 u32 bi0, idoi0, bi1, idoi1;
263 vlib_buffer_t *b0, *b1;
274 b0 = vlib_get_buffer (vm, bi0);
275 b1 = vlib_get_buffer (vm, bi1);
277 idoi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
278 idoi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
279 ido0 = interface_rx_dpo_get(idoi0);
280 ido1 = interface_rx_dpo_get(idoi1);
282 vnet_buffer(b0)->sw_if_index[VLIB_RX] = ido0->ido_sw_if_index;
283 vnet_buffer(b1)->sw_if_index[VLIB_RX] = ido1->ido_sw_if_index;
287 vnet_update_l2_len (b0);
288 vnet_update_l2_len (b1);
291 vlib_increment_combined_counter (im->combined_sw_if_counters
292 + VNET_INTERFACE_COUNTER_RX,
294 ido0->ido_sw_if_index,
296 vlib_buffer_length_in_chain (vm, b0));
297 vlib_increment_combined_counter (im->combined_sw_if_counters
298 + VNET_INTERFACE_COUNTER_RX,
300 ido1->ido_sw_if_index,
302 vlib_buffer_length_in_chain (vm, b1));
304 if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
306 interface_rx_dpo_trace_t *tr0;
308 tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
309 tr0->sw_if_index = ido0->ido_sw_if_index;
311 if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
313 interface_rx_dpo_trace_t *tr1;
315 tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
316 tr1->sw_if_index = ido1->ido_sw_if_index;
320 while (n_left_from > 0 && n_left_to_next > 0)
322 const interface_rx_dpo_t * ido0;
333 b0 = vlib_get_buffer (vm, bi0);
335 idoi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
336 ido0 = interface_rx_dpo_get(idoi0);
338 /* Swap the RX interface of the packet to the one the
339 * interface DPR represents */
340 vnet_buffer(b0)->sw_if_index[VLIB_RX] = ido0->ido_sw_if_index;
342 /* Update l2_len to make l2 tag rewrite work */
344 vnet_update_l2_len (b0);
346 /* Bump the interface's RX coutners */
347 vlib_increment_combined_counter (im->combined_sw_if_counters
348 + VNET_INTERFACE_COUNTER_RX,
350 ido0->ido_sw_if_index,
352 vlib_buffer_length_in_chain (vm, b0));
354 if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
356 interface_rx_dpo_trace_t *tr;
358 tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
359 tr->sw_if_index = ido0->ido_sw_if_index;
362 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
364 return from_frame->n_vectors;
368 format_interface_rx_dpo_trace (u8 * s, va_list * args)
370 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
371 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
372 interface_rx_dpo_trace_t * t = va_arg (*args, interface_rx_dpo_trace_t *);
373 u32 indent = format_get_indent (s);
374 s = format (s, "%U sw_if_index:%d",
375 format_white_space, indent,
381 interface_rx_dpo_ip4 (vlib_main_t * vm,
382 vlib_node_runtime_t * node,
383 vlib_frame_t * from_frame)
385 return (interface_rx_dpo_inline(vm, node, from_frame, 0));
389 interface_rx_dpo_ip6 (vlib_main_t * vm,
390 vlib_node_runtime_t * node,
391 vlib_frame_t * from_frame)
393 return (interface_rx_dpo_inline(vm, node, from_frame, 0));
397 interface_rx_dpo_l2 (vlib_main_t * vm,
398 vlib_node_runtime_t * node,
399 vlib_frame_t * from_frame)
401 return (interface_rx_dpo_inline(vm, node, from_frame, 1));
404 VLIB_REGISTER_NODE (interface_rx_dpo_ip4_node) = {
405 .function = interface_rx_dpo_ip4,
406 .name = "interface-rx-dpo-ip4",
407 .vector_size = sizeof (u32),
408 .format_trace = format_interface_rx_dpo_trace,
412 [INTERFACE_RX_DPO_DROP] = "ip4-drop",
413 [INTERFACE_RX_DPO_INPUT] = "ip4-input",
417 VLIB_NODE_FUNCTION_MULTIARCH (interface_rx_dpo_ip4_node,
418 interface_rx_dpo_ip4)
420 VLIB_REGISTER_NODE (interface_rx_dpo_ip6_node) = {
421 .function = interface_rx_dpo_ip6,
422 .name = "interface-rx-dpo-ip6",
423 .vector_size = sizeof (u32),
424 .format_trace = format_interface_rx_dpo_trace,
428 [INTERFACE_RX_DPO_DROP] = "ip6-drop",
429 [INTERFACE_RX_DPO_INPUT] = "ip6-input",
433 VLIB_NODE_FUNCTION_MULTIARCH (interface_rx_dpo_ip6_node,
434 interface_rx_dpo_ip6)
436 VLIB_REGISTER_NODE (interface_rx_dpo_l2_node) = {
437 .function = interface_rx_dpo_l2,
438 .name = "interface-rx-dpo-l2",
439 .vector_size = sizeof (u32),
440 .format_trace = format_interface_rx_dpo_trace,
444 [INTERFACE_RX_DPO_DROP] = "error-drop",
445 [INTERFACE_RX_DPO_INPUT] = "l2-input",
449 VLIB_NODE_FUNCTION_MULTIARCH (interface_rx_dpo_l2_node,