1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
</*
* Copyright (c) 2015-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* ip/ip4_forward.h: IP v4 forwarding
*
* Copyright (c) 2008 Eliot Dresselhaus
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __included_ip4_forward_h__
#define __included_ip4_forward_h__
#include <vppinfra/cache.h>
#include <vnet/fib/ip4_fib.h>
#include <vnet/dpo/load_balance_map.h>
#include <vnet/ip/ip4_inlines.h>
/**
* @file
* @brief IPv4 Forwarding.
*
* This file contains the source code for IPv4 forwarding.
*/
always_inline uword
ip4_lookup_inline (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_frame_t * frame)
{
ip4_main_t *im = &ip4_main;
vlib_combined_counter_main_t *cm = &load_balance_main.lbm_to_counters;
u32 n_left, *from;
u32 thread_index = vm->thread_index;
vlib_buffer_t *bufs[VLIB_FRAME_SIZE];
vlib_buffer_t **b = bufs;
u16 nexts[VLIB_FRAME_SIZE], *next;
from = vlib_frame_vector_args (frame);
n_left = frame->n_vectors;
next = nexts;
vlib_get_buffers (vm, from, bufs, n_left);
#if (CLIB_N_PREFETCHES >= 8)
while (n_left >= 4)
{
ip4_header_t *ip0, *ip1, *ip2, *ip3;
const load_balance_t *lb0, *lb1, *lb2, *lb3;
ip4_address_t *dst_addr0, *dst_addr1, *dst_addr2, *dst_addr3;
u32 lb_index0, lb_index1, lb_index2, lb_index3;
flow_hash_config_t flow_hash_config0, flow_hash_config1;
flow_hash_config_t flow_hash_config2, flow_hash_config3;
u32 hash_c0, hash_c1, hash_c2, hash_c3;
const dpo_id_t *dpo0, *dpo1, *dpo2, *dpo3;
/* Prefetch next iteration. */
if (n_left >= 8)
{
vlib_prefetch_buffer_header (b[4], LOAD);
vlib_prefetch_buffer_header (b[5], LOAD);
vlib_prefetch_buffer_header (b[6], LOAD);
vlib_prefetch_buffer_header (b[7], LOAD);
CLIB_PREFETCH (b[4]->data, sizeof (ip0[0]), LOAD);
CLIB_PREFETCH (b[5]->data, sizeof (ip0[0]), LOAD);
CLIB_PREFETCH (b[6]->data, sizeof (ip0[0]), LOAD);
CLIB_PREFETCH (b[7]->data, sizeof (ip0[0]), LOAD);
}
ip0 = vlib_buffer_get_current (b[0]);
ip1 = vlib_buffer_get_current (b[1]);
ip2 = vlib_buffer_get_current (b[2]);
ip3 = vlib_buffer_get_current (b[3]);
dst_addr0 = &ip0->dst_address;
dst_addr1 = &ip1->dst_address;
dst_addr2 = &ip2->dst_address;
dst_addr3 = &ip3->dst_address;
ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[0]);
ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[1]);
ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[2]);
ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[3]);
ip4_fib_forwarding_lookup_x4 (
vnet_buffer (b[0])->ip.fib_index, vnet_buffer (b[1])->ip.fib_index,
vnet_buffer (b[2])->ip.fib_index, vnet_buffer (b[3])->ip.fib_index,
dst_addr0, dst_addr1, dst_addr2, dst_addr3, &lb_index0, &lb_index1,
&lb_index2, &lb_index3);
ASSERT (lb_index0 && lb_index1 && lb_index2 && lb_index3);
lb0 = load_balance_get (lb_index0);
lb1 = load_balance_get (lb_index1);
lb2 = load_balance_get (lb_index2);
lb3 = load_balance_get (lb_index3);
ASSERT (lb0->lb_n_buckets > 0);
ASSERT (is_pow2 (lb0->lb_n_buckets));
ASSERT (lb1->lb_n_buckets > 0);
ASSERT (is_pow2 (lb1->lb_n_buckets));
ASSERT (lb2->lb_n_buckets > 0);
ASSERT (is_pow2 (lb2->lb_n_buckets));
ASSERT (lb3->lb_n_buckets > 0);
ASSERT (is_pow2 (lb3->lb_n_buckets));
/* Use flow hash to compute multipath adjacency. */
hash_c0 = vnet_buffer (b[0])->ip.flow_hash = 0;
hash_c1 = vnet_buffer (b[1])->ip.flow_hash = 0;
hash_c2 = vnet_buffer (b[2])->ip.flow_hash = 0;
hash_c3 = vnet_buffer (b[3])->ip.flow_hash = 0;
if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
{
flow_hash_config0 = lb0->lb_hash_config;
hash_c0 = vnet_buffer (b[0])->ip.flow_hash =
ip4_compute_flow_hash (ip0, flow_hash_config0);
dpo0 =
load_balance_get_fwd_bucket (lb0,
(hash_c0 /*
* Copyright (c) 2015 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* interface_output.c: interface output node
*
* Copyright (c) 2008 Eliot Dresselhaus
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <vnet/vnet.h>
#include <vnet/ip/icmp46_packet.h>
#include <vnet/ethernet/packet.h>
#include <vnet/ip/format.h>
#include <vnet/ip/ip4.h>
#include <vnet/ip/ip6.h>
#include <vnet/udp/udp_packet.h>
#include <vnet/feature/feature.h>
#include <vnet/classify/pcap_classify.h>
#include <vnet/interface_output.h>
#include <vppinfra/vector_funcs.h>
typedef struct
{
u32 sw_if_index;
u32 flags;
u8 data[128 - 2 * sizeof (u32)];
}
interface_output_trace_t;
#ifndef CLIB_MARCH_VARIANT
u8 *
format_vnet_interface_output_trace (u8 * s, va_list * va)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
vlib_node_t *node = va_arg (*va, vlib_node_t *);
interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
vnet_main_t *vnm = vnet_get_main ();
vnet_sw_interface_t *si;
u32 indent;
if (t->sw_if_index != (u32) ~ 0)
{
indent = format_get_indent (s);
if (pool_is_free_index
(vnm->interface_main.sw_interfaces, t->sw_if_index))
{
/* the interface may have been deleted by the time the trace is printed */
s = format (s, "sw_if_index: %d ", t->sw_if_index);
}
else
{
si = vnet_get_sw_interface (vnm, t->sw_if_index);
s =
format (s, "%U ", format_vnet_sw_interface_name, vnm, si,
t->flags);
}
s =
format (s, "\n%U%U", format_white_space, indent,
node->format_buffer ? node->format_buffer : format_hex_bytes,
t->data, sizeof (t->data));
}
return s;
}
#endif /* CLIB_MARCH_VARIANT */
static void
vnet_interface_output_trace (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame, uword n_buffers)
{
u32 n_left, *from;
n_left = n_buffers;
from = vlib_frame_vector_args (frame);
while (n_left >= 4)
{
u32 bi0, bi1;
vlib_buffer_t *b0, *b1;
interface_output_trace_t *t0, *t1;
/* Prefetch next iteration. */
vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
bi0 = from[0];
bi1 = from[1];
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
if (b0->flags & VLIB_BUFFER_IS_TRACED)
{
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
t0->flags = b0->flags;
clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
sizeof (t0->data));
}
if (b1->flags & VLIB_BUFFER_IS_TRACED)
{
t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
t1->flags = b1->flags;
clib_memcpy_fast (t1->data, vlib_buffer_get_current (b1),
sizeof (t1->data));
}
from += 2;
n_left -= 2;
}
while (n_left >= 1)
{
u32 bi0;
vlib_buffer_t *b0;
interface_output_trace_t *t0;
bi0 = from[0];
b0 = vlib_get_buffer (vm, bi0);
if (b0->flags & VLIB_BUFFER_IS_TRACED)
{
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
t0->flags = b0->flags;
clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
sizeof (t0->data));
}
from += 1;
n_left -= 1;
}
}
static_always_inline void
vnet_interface_output_handle_offload (vlib_main_t *vm, vlib_buffer_t *b)
{
vnet_calc_checksums_inline (vm, b, b->flags & VNET_BUFFER_F_IS_IP4,
b->flags & VNET_BUFFER_F_IS_IP6);
}
static_always_inline uword
vnet_interface_output_node_inline (vlib_main_t *vm, u32 sw_if_index,
vlib_combined_counter_main_t *ccm,
vlib_buffer_t **b, u32 config_index, u8 arc,
u32 n_left, int do_tx_offloads,
int arc_or_subif)
{
u32 n_bytes = 0;
u32 n_bytes0, n_bytes1, n_bytes2, n_bytes3;
u32 ti = vm->thread_index;
while (n_left >= 8)
{
u32 or_flags;
/* Prefetch next iteration. */
vlib_prefetch_buffer_header (b[4], LOAD);
vlib_prefetch_buffer_header (b[5], LOAD);
vlib_prefetch_buffer_header (b[6], LOAD);
vlib_prefetch_buffer_header (b[7], LOAD);
if (do_tx_offloads)
or_flags = b[0]->flags | b[1]->flags | b[2]->flags | b[3]->flags;
/* Be grumpy about zero length buffers for benefit of
driver tx function. */
ASSERT (b[0]->current_length > 0);
ASSERT (b[1]->current_length > 0);
ASSERT (b[2]->current_length > 0);
ASSERT (b[3]->current_length > 0);
n_bytes += n_bytes0 = vlib_buffer_length_in_chain (vm, b[0]);
n_bytes += n_bytes1 = vlib_buffer_length_in_chain (vm, b[1]);
n_bytes += n_bytes2 = vlib_buffer_length_in_chain (vm, b[2]);
n_bytes += n_bytes3 = vlib_buffer_length_in_chain (vm, b[3]);
if (arc_or_subif)
{
u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3;
tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
tx_swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
tx_swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
tx_swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
/* update vlan subif tx counts, if required */
if (PREDICT_FALSE (tx_swif0 != sw_if_index))
vlib_increment_combined_counter (ccm, ti, tx_swif0, 1, n_bytes0);
if (PREDICT_FALSE (tx_swif1 != sw_if_index))
vlib_increment_combined_counter (ccm, ti, tx_swif1, 1, n_bytes1);
if (PREDICT_FALSE (tx_swif2 != sw_if_index))
vlib_increment_combined_counter (ccm, ti, tx_swif2, 1, n_bytes2);
if (PREDICT_FALSE (tx_swif3 != sw_if_index))
vlib_increment_combined_counter (ccm, ti, tx_swif3, 1, n_bytes3);
if (PREDICT_FALSE (config_index != ~0))
{
vnet_buffer (b[0])->feature_arc_index = arc;
b[0]->current_config_index = config_index;
vnet_buffer (b[1])->feature_arc_index = arc;
b[1]->current_config_index = config_index;
vnet_buffer (b[2])->feature_arc_index = arc;
b[2]->current_config_index = config_index;
vnet_buffer (b[3])->feature_arc_index = arc;
b[3]->current_config_index = config_index;
}
}
if (do_tx_offloads && (or_flags & VNET_BUFFER_F_OFFLOAD))
{
vnet_interface_output_handle_offload (vm, b[0]);
vnet_interface_output_handle_offload (vm, b[1]);
vnet_interface_output_handle_offload (vm, b[2]);
vnet_interface_output_handle_offload (vm, b[3]);
}
n_left -= 4;
b += 4;
}
while (n_left)
{
/* Be grumpy about zero length buffers for benefit of
driver tx function. */
ASSERT (b[0]->current_length > 0);
n_bytes += n_bytes0 = vlib_buffer_length_in_chain (vm, b[0]);
if (arc_or_subif)
{
u32 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
if (PREDICT_FALSE (config_index != ~0))
{
vnet_buffer (b[0])->feature_arc_index = arc;
b[0]->current_config_index = config_index;
}
if (PREDICT_FALSE (tx_swif0 != sw_if_index))
vlib_increment_combined_counter (ccm, ti, tx_swif0, 1, n_bytes0);
}
if (do_tx_offloads)
vnet_interface_output_handle_offload (vm, b[0]);
n_left -= 1;
b += 1;
}
return n_bytes;
}
static_always_inline void vnet_interface_pcap_tx_trace
(vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame,
int sw_if_index_from_buffer)
{
vnet_main_t *vnm = vnet_get_main ();
u32 n_left_from, *from;
u32 sw_if_index;
vnet_pcap_t *pp = &vnm->pcap;
if (PREDICT_TRUE (pp->pcap_tx_enable == 0))
return;
if (sw_if_index_from_buffer == 0)
{
vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
sw_if_index = rt->sw_if_index;
}
else
sw_if_index = ~0;
n_left_from = frame->n_vectors;
from = vlib_frame_vector_args (frame);
while (n_left_from > 0)
{
u32 bi0 = from[0];
vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
from++;
n_left_from--;
if (sw_if_index_from_buffer)
sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
if (vnet_is_packet_pcaped (pp, b0, sw_if_index))
pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
}
}
static_always_inline void
store_tx_frame_scalar_data (vnet_hw_if_output_node_runtime_t *r,
vnet_hw_if_tx_frame_t *tf)
{
if (r)
clib_memcpy_fast (tf, &r->frame, sizeof (vnet_hw_if_tx_frame_t));
}
static_always_inline void
enqueu_to_tx_node (vlib_main_t *vm, vlib_node_runtime_t *node,
vnet_hw_interface_t *hi, u32 *from, u32 n_vectors)
{
u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
vnet_hw_if_output_node_runtime_t *r = 0;
u32 n_free, n_copy, *to;
vnet_hw_if_tx_frame_t *tf;
vlib_frame_t *f;
ASSERT (n_vectors <= VLIB_FRAME_SIZE);
if (hi->output_node_thread_runtimes)
r = vec_elt_at_index (hi->output_node_thread_runtimes, vm->thread_index);
f = vlib_get_next_frame_internal (vm, node, next_index, 0);
tf = vlib_frame_scalar_args (f);
if (f->n_vectors > 0 && (r == 0 || tf->queue_id == r->frame.queue_id))
{
/* append current next frame */
n_free = VLIB_FRAME_SIZE - f->n_vectors;
n_copy = clib_min (n_vectors, n_free);
n_vectors -= n_copy;
to = vlib_frame_vector_args (f);
to += f->n_vectors;
}
else
{
if (f->n_vectors > 0)
{
/* current frame doesn't fit - grab empty one */
f = vlib_get_next_frame_internal (vm, node, next_index, 1);
tf = vlib_frame_scalar_args (f);
}
/* empty frame - store scalar data */
store_tx_frame_scalar_data (r, tf);
to = vlib_frame_vector_args (f);
n_free = VLIB_FRAME_SIZE;
n_copy = n_vectors;
n_vectors = 0;
}
vlib_buffer_copy_indices (to, from, n_copy);
vlib_put_next_frame (vm, node, next_index, n_free - n_copy);
if (n_vectors == 0)
return;
/* we have more indices to store, take empty frame */
from += n_copy;
f = vlib_get_next_frame_internal (vm, node, next_index, 1);
store_tx_frame_scalar_data (r, vlib_frame_scalar_args (f));
vlib_buffer_copy_indices (vlib_frame_vector_args (f), from, n_vectors);
vlib_put_next_frame (vm, node, next_index, VLIB_FRAME_SIZE - n_vectors);
}
VLIB_NODE_FN (vnet_interface_output_node)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
{
vnet_main_t *vnm = vnet_get_main ();
vnet_interface_main_t *im = &vnm->interface_main;
vlib_combined_counter_main_t *ccm;
vnet_hw_interface_t *hi;
vnet_sw_interface_t *si;
vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
vlib_buffer_t *bufs[VLIB_FRAME_SIZE];
u32 n_bytes, n_buffers = frame->n_vectors;
u32 config_index = ~0;
u32 sw_if_index = rt->sw_if_index;
u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
u32 ti = vm->thread_index;
u8 arc = im->output_feature_arc_index;
int arc_or_subif = 0;
int do_tx_offloads = 0;
u32 *from;
if (node->flags & VLIB_NODE_FLAG_TRACE)
vnet_interface_output_trace (vm, node, frame, n_buffers);
from = vlib_frame_vector_args (frame);
if (rt->is_deleted)
return vlib_error_drop_buffers (
vm, node, from,
/* buffer stride */ 1, n_buffers, VNET_INTERFACE_OUTPUT_NEXT_DROP,
node->node_index, VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
vnet_interface_pcap_tx_trace (vm, node, frame,
0 /* sw_if_index_from_buffer */ );
vlib_get_buffers (vm, from, bufs, n_buffers);
si = vnet_get_sw_interface (vnm, sw_if_index);
hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
!(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
{
vlib_simple_counter_main_t *cm;
cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
VNET_INTERFACE_COUNTER_TX_ERROR);
vlib_increment_simple_counter (cm, ti, sw_if_index, n_buffers);
return vlib_error_drop_buffers (
vm, node, from,
/* buffer stride */ 1, n_buffers, VNET_INTERFACE_OUTPUT_NEXT_DROP,
node->node_index, VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
}
/* interface-output feature arc handling */
if (PREDICT_FALSE (vnet_have_features (arc, sw_if_index)))
{
vnet_feature_config_main_t *fcm;
fcm = vnet_feature_get_config_main (arc);
config_index = vnet_get_feature_config_index (arc, sw_if_index);
vnet_get_config_data (&fcm->config_main, &config_index, &next_index, 0);
arc_or_subif = 1;
}
else if (hash_elts (hi->sub_interface_sw_if_index_by_id))
arc_or_subif = 1;
ccm = im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX;
if ((hi->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_TX_CKSUM) == 0)
do_tx_offloads = 1;
if (do_tx_offloads == 0 && arc_or_subif == 0)
n_bytes = vnet_interface_output_node_inline (
vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 0, 0);
else if (do_tx_offloads == 0 && arc_or_subif == 1)
n_bytes = vnet_interface_output_node_inline (
vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 0, 1);
else if (do_tx_offloads == 1 && arc_or_subif == 0)
n_bytes = vnet_interface_output_node_inline (
vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 1, 0);
else
n_bytes = vnet_interface_output_node_inline (
vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 1, 1);
from = vlib_frame_vector_args (frame);
if (PREDICT_TRUE (next_index == VNET_INTERFACE_OUTPUT_NEXT_TX))
{
enqueu_to_tx_node (vm, node, hi, from, frame->n_vectors);
}
else
{
vlib_buffer_enqueue_to_single_next (vm, node, from, next_index,
frame->n_vectors);
}
/* Update main interface stats. */
vlib_increment_combined_counter (ccm, ti, sw_if_index, n_buffers, n_bytes);
return n_buffers;
}
VLIB_REGISTER_NODE (vnet_interface_output_node) = {
.name = "interface-output-template",
.vector_size = sizeof (u32),
};
/* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
VLIB_NODE_FN (vnet_per_buffer_interface_output_node) (vlib_main_t * vm,
vlib_node_runtime_t *
node,
vlib_frame_t * frame)
{
vnet_main_t *vnm = vnet_get_main ();
u32 n_left_to_next, *from, *to_next;
u32 n_left_from, next_index;
vnet_interface_pcap_tx_trace (vm, node, frame,
1 /* sw_if_index_from_buffer */ );
n_left_from = frame->n_vectors;
from = vlib_frame_vector_args (frame);
next_index = node->cached_next_index;
while (n_left_from > 0)
{
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
u32 bi0, bi1, next0, next1;
vlib_buffer_t *b0, *b1;
vnet_hw_interface_t *hi0, *hi1;
/* Prefetch next iteration. */
vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
bi0 = from[0];
bi1 = from[1];
to_next[0] = bi0;
to_next[1] = bi1;
from += 2;
to_next += 2;
n_left_to_next -= 2;
n_left_from -= 2;
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
hi0 =
vnet_get_sup_hw_interface (vnm,
vnet_buffer (b0)->sw_if_index
[VLIB_TX]);
hi1 =
vnet_get_sup_hw_interface (vnm,
vnet_buffer (b1)->sw_if_index
[VLIB_TX]);
next0 = hi0->output_node_next_index;
next1 = hi1->output_node_next_index;
vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
n_left_to_next, bi0, bi1, next0,
next1);
}
while (n_left_from > 0 && n_left_to_next > 0)
{
u32 bi0, next0;
vlib_buffer_t *b0;
vnet_hw_interface_t *hi0;
bi0 = from[0];
to_next[0] = bi0;
from += 1;
to_next += 1;
n_left_to_next -= 1;
n_left_from -= 1;
b0 = vlib_get_buffer (vm, bi0);
hi0 =
vnet_get_sup_hw_interface (vnm,
vnet_buffer (b0)->sw_if_index
[VLIB_TX]);
next0 = hi0->output_node_next_index;
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, bi0, next0);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
return frame->n_vectors;
}
typedef struct vnet_error_trace_t_
{
u32 sw_if_index;
i8 details_valid;
u8 is_ip6;
u8 pad[2];
u16 mactype;
ip46_address_t src, dst;
} vnet_error_trace_t;
static u8 *
format_vnet_error_trace (u8 * s, va_list * va)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
vnet_error_trace_t *t = va_arg (*va, vnet_error_trace_t *);
/* Normal, non-catchup trace */
if (t->details_valid == 0)
{
s = format (s, "rx:%U", format_vnet_sw_if_index_name,
vnet_get_main (), t->sw_if_index);
}
else if (t->details_valid == 1)
{
/* The trace capture code didn't understant the mactype */
s = format (s, "mactype 0x%4x (not decoded)", t->mactype);
}
else if (t->details_valid == 2)
{
/* Dump the src/dst addresses */
if (t->is_ip6 == 0)
s = format (s, "IP4: %U -> %U",
format_ip4_address, &t->src.ip4,
format_ip4_address, &t->dst.ip4);
else
s = format (s, "IP6: %U -> %U",
format_ip6_address, &t->src.ip6,
format_ip6_address, &t->dst.ip6);
}
return s;
}
static void
interface_trace_buffers (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_frame_t * frame)
{
u32 n_left, *buffers;
buffers = vlib_frame_vector_args (frame);
n_left = frame->n_vectors;
while (n_left >= 4)
{
u32 bi0, bi1;
vlib_buffer_t *b0, *b1;
vnet_error_trace_t *t0, *t1;
/* Prefetch next iteration. */
vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
bi0 = buffers[0];
bi1 = buffers[1];
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
if (b0->flags & VLIB_BUFFER_IS_TRACED)
{
t0 = vlib_add_trace (vm, node, b0,
STRUCT_OFFSET_OF (vnet_error_trace_t, pad));
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
t0->details_valid = 0;
}
if (b1->flags & VLIB_BUFFER_IS_TRACED)
{
t1 = vlib_add_trace (vm, node, b1,
STRUCT_OFFSET_OF (vnet_error_trace_t, pad));
t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
t1->details_valid = 0;
}
buffers += 2;
n_left -= 2;
}
while (n_left >= 1)
{
u32 bi0;
vlib_buffer_t *b0;
vnet_error_trace_t *t0;
bi0 = buffers[0];
b0 = vlib_get_buffer (vm, bi0);
if (b0->flags & VLIB_BUFFER_IS_TRACED)
{
t0 = vlib_add_trace (vm, node, b0,
STRUCT_OFFSET_OF (vnet_error_trace_t, pad));
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
t0->details_valid = 0;
}
buffers += 1;
n_left -= 1;
}
}
typedef enum
{
VNET_ERROR_DISPOSITION_DROP,
VNET_ERROR_DISPOSITION_PUNT,
VNET_ERROR_N_DISPOSITION,
} vnet_error_disposition_t;
static void
drop_catchup_trace (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_buffer_t * b)
{
/* Can we safely rewind the buffer? If not, fagedaboudit */
if (b->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
{
vnet_error_trace_t *t;
ip4_header_t *ip4;
ip6_header_t *ip6;
ethernet_header_t *eh;
i16 delta;
t = vlib_add_trace (vm, node, b, sizeof (*t));
delta = vnet_buffer (b)->l2_hdr_offset - b->current_data;
vlib_buffer_advance (b, delta);
eh = vlib_buffer_get_current (b);
/* Save mactype */
t->mactype = clib_net_to_host_u16 (eh->type);
t->details_valid = 1;
switch (t->mactype)
{
case ETHERNET_TYPE_IP4:
ip4 = (void *) (eh + 1);
t->details_valid = 2;
t->is_ip6 = 0;
t->src.ip4.as_u32 = ip4->src_address.as_u32;
t->dst.ip4.as_u32 = ip4->dst_address.as_u32;
break;
case ETHERNET_TYPE_IP6:
ip6 = (void *) (eh + 1);
t->details_valid = 2;
t->is_ip6 = 1;
clib_memcpy_fast (t->src.as_u8, ip6->src_address.as_u8,
sizeof (ip6_address_t));
clib_memcpy_fast (t->dst.as_u8, ip6->dst_address.as_u8,
sizeof (ip6_address_t));
break;
default:
/* Dunno, do nothing, leave details_valid alone */
break;
}
/* Restore current data (probably unnecessary) */
vlib_buffer_advance (b, -delta);
}
}
static_always_inline uword
interface_drop_punt (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame,
vnet_error_disposition_t disposition)
{
u32 *from, n_left, thread_index, *sw_if_index;
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
u32 sw_if_indices[VLIB_FRAME_SIZE];
vlib_simple_counter_main_t *cm;
u16 nexts[VLIB_FRAME_SIZE];
u32 n_trace;
vnet_main_t *vnm;
vnm = vnet_get_main ();
thread_index = vm->thread_index;
from = vlib_frame_vector_args (frame);
n_left = frame->n_vectors;
b = bufs;
sw_if_index = sw_if_indices;
vlib_get_buffers (vm, from, bufs, n_left);
/* "trace add error-drop NNN?" */
if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node))))
{
/* If pkts aren't otherwise traced... */
if ((node->flags & VLIB_NODE_FLAG_TRACE) == 0)
{
/* Trace them from here */
node->flags |= VLIB_NODE_FLAG_TRACE;
while (n_trace && n_left)
{
if (PREDICT_TRUE
(vlib_trace_buffer (vm, node, 0 /* next_index */ , b[0],
0 /* follow chain */ )))
{
/*
* Here we have a wireshark dissector problem.
* Packets may be well-formed, or not. We
* must not blow chunks in any case.
*
* Try to produce trace records which will help
* folks understand what's going on.
*/
drop_catchup_trace (vm, node, b[0]);
n_trace--;
}
n_left--;
b++;
}
}
vlib_set_trace_count (vm, node, n_trace);
b = bufs;
n_left = frame->n_vectors;
}
if (node->flags & VLIB_NODE_FLAG_TRACE)
interface_trace_buffers (vm, node, frame);
/* All going to drop regardless, this is just a counting exercise */
clib_memset (nexts, 0, sizeof (nexts));
cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
(disposition == VNET_ERROR_DISPOSITION_PUNT
? VNET_INTERFACE_COUNTER_PUNT
: VNET_INTERFACE_COUNTER_DROP));
/* collect the array of interfaces first ... */
while (n_left >= 4)
{
if (n_left >= 12)
{
/* Prefetch 8 ahead - there's not much going on in each iteration */
vlib_prefetch_buffer_header (b[4], LOAD);
vlib_prefetch_buffer_header (b[5], LOAD);
vlib_prefetch_buffer_header (b[6], LOAD);
vlib_prefetch_buffer_header (b[7], LOAD);
}
sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_RX];
sw_if_index += 4;
n_left -= 4;
b += 4;
}
while (n_left)
{
sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
sw_if_index += 1;
n_left -= 1;
b += 1;
}
/* ... then count against them in blocks */
n_left = frame->n_vectors;
while (n_left)
{
vnet_sw_interface_t *sw_if0;
u16 off, count;
off = frame->n_vectors - n_left;
sw_if_index = sw_if_indices + off;
count = clib_count_equal_u32 (sw_if_index, n_left);
n_left -= count;
vlib_increment_simple_counter (cm, thread_index, sw_if_index[0], count);
/* Increment super-interface drop/punt counters for
sub-interfaces. */
sw_if0 = vnet_get_sw_interface (vnm, sw_if_index[0]);
if (sw_if0->sup_sw_if_index != sw_if_index[0])
vlib_increment_simple_counter
(cm, thread_index, sw_if0->sup_sw_if_index, count);
}
vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
return frame->n_vectors;
}
static inline void
pcap_drop_trace (vlib_main_t * vm,
vnet_interface_main_t * im,
vnet_pcap_t * pp, vlib_frame_t * f)
{
u32 *from;
u32 n_left = f->n_vectors;
vlib_buffer_t *b0, *p1;
u32 bi0;
i16 save_current_data;
u16 save_current_length;
vlib_error_main_t *em = &vm->error_main;
from = vlib_frame_vector_args (f);
while (n_left > 0)
{
if (PREDICT_TRUE (n_left > 1))
{
p1 = vlib_get_buffer (vm, from[1]);
vlib_prefetch_buffer_header (p1, LOAD);
}
bi0 = from[0];
b0 = vlib_get_buffer (vm, bi0);
from++;
n_left--;
/* See if we're pointedly ignoring this specific error */
if (im->pcap_drop_filter_hash
&& hash_get (im->pcap_drop_filter_hash, b0->error))
continue;
if (!vnet_is_packet_pcaped (pp, b0, ~0))
continue; /* not matching, skip */
/* Trace all drops, or drops received on a specific interface */
save_current_data = b0->current_data;
save_current_length = b0->current_length;
/*
* Typically, we'll need to rewind the buffer
* if l2_hdr_offset is valid, make sure to rewind to the start of
* the L2 header. This may not be the buffer start in case we pop-ed
* vlan tags.
* Otherwise, rewind to buffer start and hope for the best.
*/
if (b0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
{
if (b0->current_data > vnet_buffer (b0)->l2_hdr_offset)
vlib_buffer_advance (b0, vnet_buffer (b0)->l2_hdr_offset -
b0->current_data);
}
else if (b0->current_data > 0)
{
vlib_buffer_advance (b0, (word) -b0->current_data);
}
{
vlib_buffer_t *last = b0;
u32 error_node_index;
int drop_string_len;
vlib_node_t *n;
/* Length of the error string */
int error_string_len =
clib_strnlen (em->counters_heap[b0->error].name, 128);
/* Dig up the drop node */
error_node_index = vm->node_main.node_by_error[b0->error];
n = vlib_get_node (vm, error_node_index);
/* Length of full drop string, w/ "nodename: " prepended */
drop_string_len = error_string_len + vec_len (n->name) + 2;
/* Find the last buffer in the chain */
while (last->flags & VLIB_BUFFER_NEXT_PRESENT)
last = vlib_get_buffer (vm, last->next_buffer);
/*
* Append <nodename>: <error-string> to the capture,
* only if we can do that without allocating a new buffer.
*/
if (PREDICT_TRUE ((last->current_data + last->current_length) <
(VLIB_BUFFER_DEFAULT_DATA_SIZE - drop_string_len)))
{
clib_memcpy_fast (last->data + last->current_data +
last->current_length,
n->name, vec_len (n->name));
clib_memcpy_fast (last->data + last->current_data +
last->current_length + vec_len (n->name),
": ", 2);
clib_memcpy_fast (last->data + last->current_data +
last->current_length + vec_len (n->name) + 2,
em->counters_heap[b0->error].name,
error_string_len);
last->current_length += drop_string_len;
b0->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID);
pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
last->current_length -= drop_string_len;
b0->current_data = save_current_data;
b0->current_length = save_current_length;
continue;
}
}
/*
* Didn't have space in the last buffer, here's the dropped
* packet as-is
*/
pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
b0->current_data = save_current_data;
b0->current_length = save_current_length;
}
}
#ifndef CLIB_MARCH_VARIANT
void
vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
{
vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
if (im->pcap_drop_filter_hash == 0)
im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
if (is_add)
hash_set (im->pcap_drop_filter_hash, error_index, 1);
else
hash_unset (im->pcap_drop_filter_hash, error_index);
}
#endif /* CLIB_MARCH_VARIANT */
VLIB_NODE_FN (interface_drop) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
vnet_main_t *vnm = vnet_get_main ();
vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
vnet_pcap_t *pp = &vnm->pcap;
if (PREDICT_FALSE (pp->pcap_drop_enable))
pcap_drop_trace (vm, im, pp, frame);
return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
}
VLIB_NODE_FN (interface_punt) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (interface_drop) = {
.name = "error-drop",
.vector_size = sizeof (u32),
.format_trace = format_vnet_error_trace,
.flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
.n_next_nodes = 1,
.next_nodes = {
[0] = "drop",
},
};
/* *INDENT-ON* */
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (interface_punt) = {
.name = "error-punt",
.vector_size = sizeof (u32),
.format_trace = format_vnet_error_trace,
.flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
.n_next_nodes = 1,
.next_nodes = {
[0] = "punt",
},
};
/* *INDENT-ON* */
VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node) = {
.name = "interface-output",
.vector_size = sizeof (u32),
};
VLIB_NODE_FN (vnet_interface_output_arc_end_node)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
{
vnet_main_t *vnm = vnet_get_main ();
vnet_interface_main_t *im = &vnm->interface_main;
vnet_hw_if_output_node_runtime_t *r = 0;
vnet_hw_interface_t *hi;
vnet_hw_if_tx_frame_t *tf;
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
u32 sw_if_indices[VLIB_FRAME_SIZE], *sw_if_index = sw_if_indices;
u64 used_elts[VLIB_FRAME_SIZE / 64] = {};
u64 mask[VLIB_FRAME_SIZE / 64] = {};
u32 *tmp, *from, n_left, n_free, n_comp, *to, swif, off;
u16 next_index;
vlib_frame_t *f;
from = vlib_frame_vector_args (frame);
n_left = frame->n_vectors;
vlib_get_buffers (vm, from, bufs, n_left);
while (n_left >= 8)
{
vlib_prefetch_buffer_header (b[4], LOAD);
vlib_prefetch_buffer_header (b[5], LOAD);
vlib_prefetch_buffer_header (b[6], LOAD);
vlib_prefetch_buffer_header (b[7], LOAD);
sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
b += 4;
sw_if_index += 4;
n_left -= 4;
}
while (n_left)
{
sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
b++;
sw_if_index++;
n_left--;
}
n_left = frame->n_vectors;
swif = sw_if_indices[0];
off = 0;
/* a bit ugly but it allows us to reuse stack space for temporary store
* which may also improve memory latency */
tmp = (u32 *) bufs;
more:
next_index = vec_elt (im->if_out_arc_end_next_index_by_sw_if_index, swif);
hi = vnet_get_sup_hw_interface (vnm, swif);
if (hi->output_node_thread_runtimes)
r = vec_elt_at_index (hi->output_node_thread_runtimes, vm->thread_index);
f = vlib_get_next_frame_internal (vm, node, next_index, 0);
tf = vlib_frame_scalar_args (f);
if (f->n_vectors > 0 && (r == 0 || r->frame.queue_id == tf->queue_id))
{
/* append frame */
n_free = VLIB_FRAME_SIZE - f->n_vectors;
if (n_free >= f->n_vectors)
to = (u32 *) vlib_frame_vector_args (f) + f->n_vectors;
else
to = tmp;
}
else
{
if (f->n_vectors > 0)
{
/* current frame doesn't fit - grab empty one */
f = vlib_get_next_frame_internal (vm, node, next_index, 1);
tf = vlib_frame_scalar_args (f);
}
/* empty frame - store scalar data */
store_tx_frame_scalar_data (r, tf);
n_free = VLIB_FRAME_SIZE;
to = vlib_frame_vector_args (f);
}
/* compare and compress based on comparison mask */
clib_mask_compare_u32 (swif, sw_if_indices, mask, frame->n_vectors);
n_comp = clib_compress_u32 (to, from, mask, frame->n_vectors);
if (tmp != to)
{
/* indices already written to frame, just close it */
vlib_put_next_frame (vm, node, next_index, n_free - n_comp);
}
else if (n_free >= n_comp)
{
/* enough space in the existing frame */
to = (u32 *) vlib_frame_vector_args (f) + f->n_vectors;
vlib_buffer_copy_indices (to, tmp, n_comp);
vlib_put_next_frame (vm, node, next_index, n_free - n_comp);
}
else
{
/* full frame */
to = (u32 *) vlib_frame_vector_args (f) + f->n_vectors;
vlib_buffer_copy_indices (to, tmp, n_free);
vlib_put_next_frame (vm, node, next_index, 0);
/* second frame */
u32 n_frame2 = n_comp - n_free;
f = vlib_get_next_frame_internal (vm, node, next_index, 1);
to = vlib_frame_vector_args (f);
vlib_buffer_copy_indices (to, tmp + n_free, n_frame2);
tf = vlib_frame_scalar_args (f);
store_tx_frame_scalar_data (r, tf);
vlib_put_next_frame (vm, node, next_index, VLIB_FRAME_SIZE - n_frame2);
}
n_left -= n_comp;
if (n_left)
{
/* store comparison mask so we can find next unused element */
for (int i = 0; i < ARRAY_LEN (used_elts); i++)
used_elts[i] |= mask[i];
/* fine first unused sw_if_index by scanning trough used_elts bitmap */
while (PREDICT_FALSE (used_elts[off] == ~0))
off++;
swif =
sw_if_indices[(off << 6) + count_trailing_zeros (~used_elts[off])];
goto more;
}
return frame->n_vectors;
}
VLIB_REGISTER_NODE (vnet_interface_output_arc_end_node) = {
.name = "interface-output-arc-end",
.vector_size = sizeof (u32),
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
};
VNET_FEATURE_ARC_INIT (interface_output, static) = {
.arc_name = "interface-output",
.start_nodes = VNET_FEATURES (0),
.last_in_arc = "interface-output-arc-end",
.arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
};
VNET_FEATURE_INIT (span_tx, static) = {
.arc_name = "interface-output",
.node_name = "span-output",
.runs_before = VNET_FEATURES ("interface-output-arc-end"),
};
VNET_FEATURE_INIT (ipsec_if_tx, static) = {
.arc_name = "interface-output",
.node_name = "ipsec-if-output",
.runs_before = VNET_FEATURES ("interface-output-arc-end"),
};
VNET_FEATURE_INIT (interface_output_arc_end, static) = {
.arc_name = "interface-output",
.node_name = "interface-output-arc-end",
.runs_before = 0,
};
#ifndef CLIB_MARCH_VARIANT
clib_error_t *
vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
u32 hw_if_index,
u32 is_create)
{
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
u32 next_index;
if (hi->output_node_index == 0)
return 0;
next_index = vlib_node_add_next
(vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
hi->output_node_index);
hi->output_node_next_index = next_index;
return 0;
}
VNET_HW_INTERFACE_ADD_DEL_FUNCTION
(vnet_per_buffer_interface_output_hw_interface_add_del);
void
vnet_set_interface_output_node (vnet_main_t * vnm,
u32 hw_if_index, u32 node_index)
{
ASSERT (node_index);
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
u32 next_index = vlib_node_add_next
(vnm->vlib_main, vnet_per_buffer_interface_output_node.index, node_index);
hi->output_node_next_index = next_index;
hi->output_node_index = node_index;
}
#endif /* CLIB_MARCH_VARIANT */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|