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_dpo.h>
17 #include <vnet/fib/fib_node.h>
20 * The 'DB' of interface DPOs.
21 * There is only one per-interface per-protocol, so this is a per-interface
24 static index_t *interface_dpo_db[DPO_PROTO_NUM];
26 static interface_dpo_t *
27 interface_dpo_alloc (void)
31 pool_get(interface_dpo_pool, ido);
36 static inline interface_dpo_t *
37 interface_dpo_get_from_dpo (const dpo_id_t *dpo)
39 ASSERT(DPO_INTERFACE == dpo->dpoi_type);
41 return (interface_dpo_get(dpo->dpoi_index));
45 interface_dpo_get_index (interface_dpo_t *ido)
47 return (ido - interface_dpo_pool);
51 interface_dpo_lock (dpo_id_t *dpo)
55 ido = interface_dpo_get_from_dpo(dpo);
60 interface_dpo_unlock (dpo_id_t *dpo)
64 ido = interface_dpo_get_from_dpo(dpo);
67 if (0 == ido->ido_locks)
69 interface_dpo_db[ido->ido_proto][ido->ido_sw_if_index] =
71 pool_put(interface_dpo_pool, ido);
76 * interface_dpo_add_or_lock
78 * Add/create and lock a new or lock an existing for the interface DPO
79 * on the interface and protocol given
82 interface_dpo_add_or_lock (dpo_proto_t proto,
88 vec_validate_init_empty(interface_dpo_db[proto],
92 if (INDEX_INVALID == interface_dpo_db[proto][sw_if_index])
94 ido = interface_dpo_alloc();
96 ido->ido_sw_if_index = sw_if_index;
97 ido->ido_proto = proto;
99 interface_dpo_db[proto][sw_if_index] =
100 interface_dpo_get_index(ido);
104 ido = interface_dpo_get(interface_dpo_db[proto][sw_if_index]);
107 dpo_set(dpo, DPO_INTERFACE, proto, interface_dpo_get_index(ido));
111 static clib_error_t *
112 interface_dpo_interface_state_change (vnet_main_t * vnm,
121 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(
122 interface_dpo_interface_state_change);
125 * @brief Registered callback for HW interface state changes
127 static clib_error_t *
128 interface_dpo_hw_interface_state_change (vnet_main_t * vnm,
135 VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(
136 interface_dpo_hw_interface_state_change);
138 static clib_error_t *
139 interface_dpo_interface_delete (vnet_main_t * vnm,
146 VNET_SW_INTERFACE_ADD_DEL_FUNCTION(
147 interface_dpo_interface_delete);
150 format_interface_dpo (u8* s, va_list *ap)
152 index_t index = va_arg(*ap, index_t);
153 CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
154 vnet_main_t * vnm = vnet_get_main();
155 interface_dpo_t *ido = interface_dpo_get(index);
157 return (format(s, "%U-dpo: %U",
158 format_vnet_sw_interface_name,
160 vnet_get_sw_interface(vnm, ido->ido_sw_if_index),
161 format_dpo_proto, ido->ido_proto));
165 interface_dpo_mem_show (void)
167 fib_show_memory_usage("Interface",
168 pool_elts(interface_dpo_pool),
169 pool_len(interface_dpo_pool),
170 sizeof(interface_dpo_t));
174 const static dpo_vft_t interface_dpo_vft = {
175 .dv_lock = interface_dpo_lock,
176 .dv_unlock = interface_dpo_unlock,
177 .dv_format = format_interface_dpo,
178 .dv_mem_show = interface_dpo_mem_show,
182 * @brief The per-protocol VLIB graph nodes that are assigned to a glean
185 * this means that these graph nodes are ones from which a glean is the
186 * parent object in the DPO-graph.
188 const static char* const interface_dpo_ip4_nodes[] =
193 const static char* const interface_dpo_ip6_nodes[] =
199 const static char* const * const interface_dpo_nodes[DPO_PROTO_NUM] =
201 [DPO_PROTO_IP4] = interface_dpo_ip4_nodes,
202 [DPO_PROTO_IP6] = interface_dpo_ip6_nodes,
203 [DPO_PROTO_MPLS] = NULL,
207 interface_dpo_module_init (void)
209 dpo_register(DPO_INTERFACE,
211 interface_dpo_nodes);
215 * @brief Interface DPO trace data
217 typedef struct interface_dpo_trace_t_
220 } interface_dpo_trace_t;
222 typedef enum interface_dpo_next_t_
224 INTERFACE_DPO_DROP = 0,
225 INTERFACE_DPO_INPUT = 1,
226 } interface_dpo_next_t;
229 interface_dpo_inline (vlib_main_t * vm,
230 vlib_node_runtime_t * node,
231 vlib_frame_t * from_frame)
233 u32 n_left_from, next_index, * from, * to_next;
234 u32 cpu_index = os_get_cpu_number();
235 vnet_interface_main_t *im;
237 im = &vnet_get_main ()->interface_main;
238 from = vlib_frame_vector_args (from_frame);
239 n_left_from = from_frame->n_vectors;
241 next_index = node->cached_next_index;
243 while (n_left_from > 0)
247 vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
249 while (n_left_from >= 4 && n_left_to_next > 2)
251 const interface_dpo_t *ido0, *ido1;
252 u32 bi0, idoi0, bi1, idoi1;
253 vlib_buffer_t *b0, *b1;
264 b0 = vlib_get_buffer (vm, bi0);
265 b1 = vlib_get_buffer (vm, bi1);
267 idoi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
268 idoi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
269 ido0 = interface_dpo_get(idoi0);
270 ido1 = interface_dpo_get(idoi1);
272 vnet_buffer(b0)->sw_if_index[VLIB_RX] = ido0->ido_sw_if_index;
273 vnet_buffer(b1)->sw_if_index[VLIB_RX] = ido1->ido_sw_if_index;
275 vlib_increment_combined_counter (im->combined_sw_if_counters
276 + VNET_INTERFACE_COUNTER_RX,
278 ido0->ido_sw_if_index,
280 vlib_buffer_length_in_chain (vm, b0));
281 vlib_increment_combined_counter (im->combined_sw_if_counters
282 + VNET_INTERFACE_COUNTER_RX,
284 ido1->ido_sw_if_index,
286 vlib_buffer_length_in_chain (vm, b1));
288 if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
290 interface_dpo_trace_t *tr0;
292 tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
293 tr0->sw_if_index = ido0->ido_sw_if_index;
295 if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
297 interface_dpo_trace_t *tr1;
299 tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
300 tr1->sw_if_index = ido1->ido_sw_if_index;
303 vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
304 n_left_to_next, bi0, bi1,
306 INTERFACE_DPO_INPUT);
309 while (n_left_from > 0 && n_left_to_next > 0)
311 const interface_dpo_t * ido0;
322 b0 = vlib_get_buffer (vm, bi0);
324 idoi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
325 ido0 = interface_dpo_get(idoi0);
327 /* Swap the RX interface of the packet to the one the
328 * interface DPR represents */
329 vnet_buffer(b0)->sw_if_index[VLIB_RX] = ido0->ido_sw_if_index;
331 /* Bump the interface's RX coutners */
332 vlib_increment_combined_counter (im->combined_sw_if_counters
333 + VNET_INTERFACE_COUNTER_RX,
335 ido0->ido_sw_if_index,
337 vlib_buffer_length_in_chain (vm, b0));
339 if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
341 interface_dpo_trace_t *tr;
343 tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
344 tr->sw_if_index = ido0->ido_sw_if_index;
347 vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
349 INTERFACE_DPO_INPUT);
351 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
353 return from_frame->n_vectors;
357 format_interface_dpo_trace (u8 * s, va_list * args)
359 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
360 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
361 interface_dpo_trace_t * t = va_arg (*args, interface_dpo_trace_t *);
362 uword indent = format_get_indent (s);
363 s = format (s, "%U sw_if_index:%d",
364 format_white_space, indent,
370 interface_dpo_ip4 (vlib_main_t * vm,
371 vlib_node_runtime_t * node,
372 vlib_frame_t * from_frame)
374 return (interface_dpo_inline(vm, node, from_frame));
378 interface_dpo_ip6 (vlib_main_t * vm,
379 vlib_node_runtime_t * node,
380 vlib_frame_t * from_frame)
382 return (interface_dpo_inline(vm, node, from_frame));
385 VLIB_REGISTER_NODE (interface_dpo_ip4_node) = {
386 .function = interface_dpo_ip4,
387 .name = "interface-dpo-ip4",
388 .vector_size = sizeof (u32),
389 .format_trace = format_interface_dpo_trace,
393 [INTERFACE_DPO_DROP] = "ip4-drop",
394 [INTERFACE_DPO_INPUT] = "ip4-input",
398 VLIB_NODE_FUNCTION_MULTIARCH (interface_dpo_ip4_node,
401 VLIB_REGISTER_NODE (interface_dpo_ip6_node) = {
402 .function = interface_dpo_ip6,
403 .name = "interface-dpo-ip6",
404 .vector_size = sizeof (u32),
405 .format_trace = format_interface_dpo_trace,
409 [INTERFACE_DPO_DROP] = "ip6-drop",
410 [INTERFACE_DPO_INPUT] = "ip6-input",
414 VLIB_NODE_FUNCTION_MULTIARCH (interface_dpo_ip6_node,