Line data Source code
1 : /*
2 : *------------------------------------------------------------------
3 : * Copyright (c) 2018 Cisco and/or its affiliates.
4 : * Licensed under the Apache License, Version 2.0 (the "License");
5 : * you may not use this file except in compliance with the License.
6 : * You may obtain a copy of the License at:
7 : *
8 : * http://www.apache.org/licenses/LICENSE-2.0
9 : *
10 : * Unless required by applicable law or agreed to in writing, software
11 : * distributed under the License is distributed on an "AS IS" BASIS,
12 : * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 : * See the License for the specific language governing permissions and
14 : * limitations under the License.
15 : *------------------------------------------------------------------
16 : */
17 :
18 : #include <vlib/vlib.h>
19 : #include <vlib/unix/unix.h>
20 : #include <vlib/pci/pci.h>
21 : #include <vnet/ethernet/ethernet.h>
22 : #include <vnet/interface/rx_queue_funcs.h>
23 :
24 : #include <avf/avf.h>
25 :
26 : #define foreach_avf_input_error \
27 : _(BUFFER_ALLOC, "buffer alloc error")
28 :
29 : typedef enum
30 : {
31 : #define _(f,s) AVF_INPUT_ERROR_##f,
32 : foreach_avf_input_error
33 : #undef _
34 : AVF_INPUT_N_ERROR,
35 : } avf_input_error_t;
36 :
37 : static __clib_unused char *avf_input_error_strings[] = {
38 : #define _(n,s) s,
39 : foreach_avf_input_error
40 : #undef _
41 : };
42 :
43 : #define AVF_INPUT_REFILL_TRESHOLD 32
44 :
45 : static_always_inline void
46 0 : avf_rx_desc_write (avf_rx_desc_t * d, u64 addr)
47 : {
48 : #ifdef CLIB_HAVE_VEC256
49 0 : u64x4 v = { addr, 0, 0, 0 };
50 0 : u64x4_store_unaligned (v, (void *) d);
51 : #else
52 0 : d->qword[0] = addr;
53 0 : d->qword[1] = 0;
54 : #endif
55 0 : }
56 :
57 : static_always_inline void
58 0 : avf_rxq_refill (vlib_main_t * vm, vlib_node_runtime_t * node, avf_rxq_t * rxq,
59 : int use_va_dma)
60 : {
61 : u16 n_refill, mask, n_alloc, slot, size;
62 : vlib_buffer_t *b[8];
63 : avf_rx_desc_t *d, *first_d;
64 : void *p[8];
65 :
66 0 : size = rxq->size;
67 0 : mask = size - 1;
68 0 : n_refill = mask - rxq->n_enqueued;
69 0 : if (PREDICT_TRUE (n_refill <= AVF_INPUT_REFILL_TRESHOLD))
70 0 : return;
71 :
72 0 : slot = (rxq->next - n_refill - 1) & mask;
73 :
74 0 : n_refill &= ~7; /* round to 8 */
75 0 : n_alloc =
76 0 : vlib_buffer_alloc_to_ring_from_pool (vm, rxq->bufs, slot, size, n_refill,
77 0 : rxq->buffer_pool_index);
78 :
79 0 : if (PREDICT_FALSE (n_alloc != n_refill))
80 : {
81 0 : vlib_error_count (vm, node->node_index,
82 : AVF_INPUT_ERROR_BUFFER_ALLOC, 1);
83 0 : if (n_alloc)
84 0 : vlib_buffer_free_from_ring (vm, rxq->bufs, slot, size, n_alloc);
85 0 : return;
86 : }
87 :
88 0 : rxq->n_enqueued += n_alloc;
89 0 : first_d = rxq->descs;
90 :
91 0 : ASSERT (slot % 8 == 0);
92 :
93 0 : while (n_alloc >= 8)
94 : {
95 0 : d = first_d + slot;
96 :
97 0 : if (use_va_dma)
98 : {
99 0 : vlib_get_buffers_with_offset (vm, rxq->bufs + slot, p, 8,
100 : sizeof (vlib_buffer_t));
101 0 : avf_rx_desc_write (d + 0, pointer_to_uword (p[0]));
102 0 : avf_rx_desc_write (d + 1, pointer_to_uword (p[1]));
103 0 : avf_rx_desc_write (d + 2, pointer_to_uword (p[2]));
104 0 : avf_rx_desc_write (d + 3, pointer_to_uword (p[3]));
105 0 : avf_rx_desc_write (d + 4, pointer_to_uword (p[4]));
106 0 : avf_rx_desc_write (d + 5, pointer_to_uword (p[5]));
107 0 : avf_rx_desc_write (d + 6, pointer_to_uword (p[6]));
108 0 : avf_rx_desc_write (d + 7, pointer_to_uword (p[7]));
109 : }
110 : else
111 : {
112 0 : vlib_get_buffers (vm, rxq->bufs + slot, b, 8);
113 0 : avf_rx_desc_write (d + 0, vlib_buffer_get_pa (vm, b[0]));
114 0 : avf_rx_desc_write (d + 1, vlib_buffer_get_pa (vm, b[1]));
115 0 : avf_rx_desc_write (d + 2, vlib_buffer_get_pa (vm, b[2]));
116 0 : avf_rx_desc_write (d + 3, vlib_buffer_get_pa (vm, b[3]));
117 0 : avf_rx_desc_write (d + 4, vlib_buffer_get_pa (vm, b[4]));
118 0 : avf_rx_desc_write (d + 5, vlib_buffer_get_pa (vm, b[5]));
119 0 : avf_rx_desc_write (d + 6, vlib_buffer_get_pa (vm, b[6]));
120 0 : avf_rx_desc_write (d + 7, vlib_buffer_get_pa (vm, b[7]));
121 : }
122 :
123 : /* next */
124 0 : slot = (slot + 8) & mask;
125 0 : n_alloc -= 8;
126 : }
127 :
128 0 : avf_tail_write (rxq->qrx_tail, slot);
129 : }
130 :
131 :
132 : static_always_inline uword
133 0 : avf_rx_attach_tail (vlib_main_t * vm, vlib_buffer_t * bt, vlib_buffer_t * b,
134 : u64 qw1, avf_rx_tail_t * t)
135 : {
136 0 : vlib_buffer_t *hb = b;
137 0 : u32 tlnifb = 0, i = 0;
138 :
139 0 : if (qw1 & AVF_RXD_STATUS_EOP)
140 0 : return 0;
141 :
142 0 : while ((qw1 & AVF_RXD_STATUS_EOP) == 0)
143 : {
144 0 : ASSERT (i < AVF_RX_MAX_DESC_IN_CHAIN - 1);
145 0 : ASSERT (qw1 & AVF_RXD_STATUS_DD);
146 0 : qw1 = t->qw1s[i];
147 0 : b->next_buffer = t->buffers[i];
148 0 : b->flags |= VLIB_BUFFER_NEXT_PRESENT;
149 0 : b = vlib_get_buffer (vm, b->next_buffer);
150 0 : vlib_buffer_copy_template (b, bt);
151 0 : tlnifb += b->current_length = qw1 >> AVF_RXD_LEN_SHIFT;
152 0 : i++;
153 : }
154 :
155 0 : hb->total_length_not_including_first_buffer = tlnifb;
156 0 : hb->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
157 0 : return tlnifb;
158 : }
159 :
160 : static_always_inline void
161 0 : avf_process_flow_offload (avf_device_t *ad, avf_per_thread_data_t *ptd,
162 : uword n_rx_packets)
163 : {
164 : uword n;
165 : avf_flow_lookup_entry_t *fle;
166 :
167 0 : for (n = 0; n < n_rx_packets; n++)
168 : {
169 0 : if ((ptd->qw1s[n] & AVF_RXD_STATUS_FLM) == 0)
170 0 : continue;
171 :
172 0 : fle = pool_elt_at_index (ad->flow_lookup_entries, ptd->flow_ids[n]);
173 :
174 0 : if (fle->next_index != (u16) ~0)
175 : {
176 0 : ptd->next[n] = fle->next_index;
177 : }
178 :
179 0 : if (fle->flow_id != ~0)
180 : {
181 0 : ptd->bufs[n]->flow_id = fle->flow_id;
182 : }
183 :
184 0 : if (fle->buffer_advance != ~0)
185 : {
186 0 : vlib_buffer_advance (ptd->bufs[n], fle->buffer_advance);
187 : }
188 : }
189 0 : }
190 :
191 : static_always_inline uword
192 0 : avf_process_rx_burst (vlib_main_t * vm, vlib_node_runtime_t * node,
193 : avf_per_thread_data_t * ptd, u32 n_left,
194 : int maybe_multiseg)
195 : {
196 : vlib_buffer_t bt;
197 0 : vlib_buffer_t **b = ptd->bufs;
198 0 : u64 *qw1 = ptd->qw1s;
199 0 : avf_rx_tail_t *tail = ptd->tails;
200 0 : uword n_rx_bytes = 0;
201 :
202 : /* copy template into local variable - will save per packet load */
203 0 : vlib_buffer_copy_template (&bt, &ptd->buffer_template);
204 :
205 0 : while (n_left >= 4)
206 : {
207 0 : if (n_left >= 12)
208 : {
209 0 : vlib_prefetch_buffer_header (b[8], LOAD);
210 0 : vlib_prefetch_buffer_header (b[9], LOAD);
211 0 : vlib_prefetch_buffer_header (b[10], LOAD);
212 0 : vlib_prefetch_buffer_header (b[11], LOAD);
213 : }
214 :
215 0 : vlib_buffer_copy_template (b[0], &bt);
216 0 : vlib_buffer_copy_template (b[1], &bt);
217 0 : vlib_buffer_copy_template (b[2], &bt);
218 0 : vlib_buffer_copy_template (b[3], &bt);
219 :
220 0 : n_rx_bytes += b[0]->current_length = qw1[0] >> AVF_RXD_LEN_SHIFT;
221 0 : n_rx_bytes += b[1]->current_length = qw1[1] >> AVF_RXD_LEN_SHIFT;
222 0 : n_rx_bytes += b[2]->current_length = qw1[2] >> AVF_RXD_LEN_SHIFT;
223 0 : n_rx_bytes += b[3]->current_length = qw1[3] >> AVF_RXD_LEN_SHIFT;
224 :
225 0 : if (maybe_multiseg)
226 : {
227 0 : n_rx_bytes += avf_rx_attach_tail (vm, &bt, b[0], qw1[0], tail + 0);
228 0 : n_rx_bytes += avf_rx_attach_tail (vm, &bt, b[1], qw1[1], tail + 1);
229 0 : n_rx_bytes += avf_rx_attach_tail (vm, &bt, b[2], qw1[2], tail + 2);
230 0 : n_rx_bytes += avf_rx_attach_tail (vm, &bt, b[3], qw1[3], tail + 3);
231 : }
232 :
233 : /* next */
234 0 : qw1 += 4;
235 0 : tail += 4;
236 0 : b += 4;
237 0 : n_left -= 4;
238 : }
239 :
240 0 : while (n_left)
241 : {
242 0 : vlib_buffer_copy_template (b[0], &bt);
243 :
244 0 : n_rx_bytes += b[0]->current_length = qw1[0] >> AVF_RXD_LEN_SHIFT;
245 :
246 0 : if (maybe_multiseg)
247 0 : n_rx_bytes += avf_rx_attach_tail (vm, &bt, b[0], qw1[0], tail + 0);
248 :
249 : /* next */
250 0 : qw1 += 1;
251 0 : tail += 1;
252 0 : b += 1;
253 0 : n_left -= 1;
254 : }
255 0 : return n_rx_bytes;
256 : }
257 :
258 : static_always_inline uword
259 0 : avf_device_input_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
260 : vlib_frame_t *frame, avf_device_t *ad, u16 qid,
261 : int with_flows)
262 : {
263 0 : avf_main_t *am = &avf_main;
264 0 : vnet_main_t *vnm = vnet_get_main ();
265 0 : u32 thr_idx = vlib_get_thread_index ();
266 0 : avf_per_thread_data_t *ptd =
267 0 : vec_elt_at_index (am->per_thread_data, thr_idx);
268 0 : avf_rxq_t *rxq = vec_elt_at_index (ad->rxqs, qid);
269 0 : u32 n_trace, n_rx_packets = 0, n_rx_bytes = 0;
270 0 : u16 n_tail_desc = 0;
271 0 : u64 or_qw1 = 0;
272 : u32 *bi, *to_next, n_left_to_next;
273 0 : vlib_buffer_t *bt = &ptd->buffer_template;
274 0 : u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
275 0 : u16 next = rxq->next;
276 0 : u16 size = rxq->size;
277 0 : u16 mask = size - 1;
278 0 : avf_rx_desc_t *d, *fd = rxq->descs;
279 : #ifdef CLIB_HAVE_VEC256
280 0 : u64x4 q1x4, or_q1x4 = { 0 };
281 : u32x4 fdidx4;
282 0 : u64x4 dd_eop_mask4 = u64x4_splat (AVF_RXD_STATUS_DD | AVF_RXD_STATUS_EOP);
283 : #elif defined(CLIB_HAVE_VEC128)
284 0 : u32x4 q1x4_lo, q1x4_hi, or_q1x4 = { 0 };
285 : u32x4 fdidx4;
286 0 : u32x4 dd_eop_mask4 = u32x4_splat (AVF_RXD_STATUS_DD | AVF_RXD_STATUS_EOP);
287 : #endif
288 0 : int single_next = 1;
289 :
290 : /* is there anything on the ring */
291 0 : d = fd + next;
292 0 : if ((d->qword[1] & AVF_RXD_STATUS_DD) == 0)
293 0 : goto done;
294 :
295 0 : if (PREDICT_FALSE (ad->per_interface_next_index != ~0))
296 0 : next_index = ad->per_interface_next_index;
297 :
298 0 : if (PREDICT_FALSE (vnet_device_input_have_features (ad->sw_if_index)))
299 0 : vnet_feature_start_device_input_x1 (ad->sw_if_index, &next_index, bt);
300 :
301 0 : vlib_get_new_next_frame (vm, node, next_index, to_next, n_left_to_next);
302 :
303 : /* fetch up to AVF_RX_VECTOR_SZ from the rx ring, unflatten them and
304 : copy needed data from descriptor to rx vector */
305 0 : bi = to_next;
306 :
307 0 : while (n_rx_packets < AVF_RX_VECTOR_SZ)
308 : {
309 0 : if (next + 11 < size)
310 : {
311 0 : int stride = 8;
312 0 : clib_prefetch_load ((void *) (fd + (next + stride)));
313 0 : clib_prefetch_load ((void *) (fd + (next + stride + 1)));
314 0 : clib_prefetch_load ((void *) (fd + (next + stride + 2)));
315 0 : clib_prefetch_load ((void *) (fd + (next + stride + 3)));
316 : }
317 :
318 : #ifdef CLIB_HAVE_VEC256
319 0 : if (n_rx_packets >= AVF_RX_VECTOR_SZ - 4 || next >= size - 4)
320 0 : goto one_by_one;
321 :
322 0 : q1x4 = u64x4_gather ((void *) &d[0].qword[1], (void *) &d[1].qword[1],
323 0 : (void *) &d[2].qword[1], (void *) &d[3].qword[1]);
324 :
325 : /* not all packets are ready or at least one of them is chained */
326 0 : if (!u64x4_is_equal (q1x4 & dd_eop_mask4, dd_eop_mask4))
327 0 : goto one_by_one;
328 :
329 0 : or_q1x4 |= q1x4;
330 :
331 0 : u64x4_store_unaligned (q1x4, ptd->qw1s + n_rx_packets);
332 : #elif defined(CLIB_HAVE_VEC128)
333 0 : if (n_rx_packets >= AVF_RX_VECTOR_SZ - 4 || next >= size - 4)
334 0 : goto one_by_one;
335 :
336 0 : q1x4_lo =
337 0 : u32x4_gather ((void *) &d[0].qword[1], (void *) &d[1].qword[1],
338 0 : (void *) &d[2].qword[1], (void *) &d[3].qword[1]);
339 :
340 : /* not all packets are ready or at least one of them is chained */
341 0 : if (!u32x4_is_equal (q1x4_lo & dd_eop_mask4, dd_eop_mask4))
342 0 : goto one_by_one;
343 :
344 0 : q1x4_hi = u32x4_gather (
345 0 : (void *) &d[0].qword[1] + 4, (void *) &d[1].qword[1] + 4,
346 0 : (void *) &d[2].qword[1] + 4, (void *) &d[3].qword[1] + 4);
347 :
348 0 : or_q1x4 |= q1x4_lo;
349 0 : ptd->qw1s[n_rx_packets + 0] = (u64) q1x4_hi[0] << 32 | (u64) q1x4_lo[0];
350 0 : ptd->qw1s[n_rx_packets + 1] = (u64) q1x4_hi[1] << 32 | (u64) q1x4_lo[1];
351 0 : ptd->qw1s[n_rx_packets + 2] = (u64) q1x4_hi[2] << 32 | (u64) q1x4_lo[2];
352 0 : ptd->qw1s[n_rx_packets + 3] = (u64) q1x4_hi[3] << 32 | (u64) q1x4_lo[3];
353 : #endif
354 : #if defined(CLIB_HAVE_VEC256) || defined(CLIB_HAVE_VEC128)
355 :
356 0 : if (with_flows)
357 : {
358 0 : fdidx4 = u32x4_gather (
359 0 : (void *) &d[0].fdid_flex_hi, (void *) &d[1].fdid_flex_hi,
360 0 : (void *) &d[2].fdid_flex_hi, (void *) &d[3].fdid_flex_hi);
361 0 : u32x4_store_unaligned (fdidx4, ptd->flow_ids + n_rx_packets);
362 : }
363 :
364 0 : vlib_buffer_copy_indices (bi, rxq->bufs + next, 4);
365 :
366 : /* next */
367 0 : next = (next + 4) & mask;
368 0 : d = fd + next;
369 0 : n_rx_packets += 4;
370 0 : bi += 4;
371 0 : continue;
372 0 : one_by_one:
373 : #endif
374 0 : clib_prefetch_load ((void *) (fd + ((next + 8) & mask)));
375 :
376 0 : if (avf_rxd_is_not_dd (d))
377 0 : break;
378 :
379 0 : bi[0] = rxq->bufs[next];
380 :
381 : /* deal with chained buffers */
382 0 : if (PREDICT_FALSE (avf_rxd_is_not_eop (d)))
383 : {
384 0 : u16 tail_desc = 0;
385 0 : u16 tail_next = next;
386 0 : avf_rx_tail_t *tail = ptd->tails + n_rx_packets;
387 : avf_rx_desc_t *td;
388 : do
389 : {
390 0 : tail_next = (tail_next + 1) & mask;
391 0 : td = fd + tail_next;
392 :
393 : /* bail out in case of incomplete transaction */
394 0 : if (avf_rxd_is_not_dd (td))
395 0 : goto no_more_desc;
396 :
397 0 : or_qw1 |= tail->qw1s[tail_desc] = td[0].qword[1];
398 0 : tail->buffers[tail_desc] = rxq->bufs[tail_next];
399 0 : tail_desc++;
400 : }
401 0 : while (avf_rxd_is_not_eop (td));
402 0 : next = tail_next;
403 0 : n_tail_desc += tail_desc;
404 : }
405 :
406 0 : or_qw1 |= ptd->qw1s[n_rx_packets] = d[0].qword[1];
407 0 : if (PREDICT_FALSE (with_flows))
408 : {
409 0 : ptd->flow_ids[n_rx_packets] = d[0].fdid_flex_hi;
410 : }
411 :
412 : /* next */
413 0 : next = (next + 1) & mask;
414 0 : d = fd + next;
415 0 : n_rx_packets++;
416 0 : bi++;
417 : }
418 0 : no_more_desc:
419 :
420 0 : if (n_rx_packets == 0)
421 0 : goto done;
422 :
423 0 : rxq->next = next;
424 0 : rxq->n_enqueued -= n_rx_packets + n_tail_desc;
425 :
426 : /* avoid eating our own tail */
427 0 : rxq->descs[(next + rxq->n_enqueued) & mask].qword[1] = 0;
428 :
429 : #if defined(CLIB_HAVE_VEC256) || defined(CLIB_HAVE_VEC128)
430 0 : or_qw1 |= or_q1x4[0] | or_q1x4[1] | or_q1x4[2] | or_q1x4[3];
431 : #endif
432 :
433 0 : vlib_get_buffers (vm, to_next, ptd->bufs, n_rx_packets);
434 :
435 0 : vnet_buffer (bt)->sw_if_index[VLIB_RX] = ad->sw_if_index;
436 0 : vnet_buffer (bt)->sw_if_index[VLIB_TX] = ~0;
437 0 : bt->buffer_pool_index = rxq->buffer_pool_index;
438 0 : bt->ref_count = 1;
439 :
440 0 : if (n_tail_desc)
441 0 : n_rx_bytes = avf_process_rx_burst (vm, node, ptd, n_rx_packets, 1);
442 : else
443 0 : n_rx_bytes = avf_process_rx_burst (vm, node, ptd, n_rx_packets, 0);
444 :
445 : /* the MARKed packets may have different next nodes */
446 0 : if (PREDICT_FALSE (with_flows && (or_qw1 & AVF_RXD_STATUS_FLM)))
447 : {
448 : u32 n;
449 0 : single_next = 0;
450 0 : for (n = 0; n < n_rx_packets; n++)
451 0 : ptd->next[n] = next_index;
452 :
453 0 : avf_process_flow_offload (ad, ptd, n_rx_packets);
454 : }
455 :
456 : /* packet trace if enabled */
457 0 : if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node))))
458 : {
459 0 : u32 n_left = n_rx_packets;
460 : u32 i, j;
461 0 : u16 *next_indices = ptd->next;
462 :
463 0 : i = 0;
464 0 : while (n_trace && n_left)
465 : {
466 0 : vlib_buffer_t *b = ptd->bufs[i];
467 0 : if (PREDICT_FALSE (single_next == 0))
468 0 : next_index = next_indices[0];
469 :
470 0 : if (PREDICT_TRUE
471 : (vlib_trace_buffer
472 : (vm, node, next_index, b, /* follow_chain */ 0)))
473 : {
474 : avf_input_trace_t *tr =
475 0 : vlib_add_trace (vm, node, b, sizeof (*tr));
476 0 : tr->next_index = next_index;
477 0 : tr->qid = qid;
478 0 : tr->hw_if_index = ad->hw_if_index;
479 0 : tr->qw1s[0] = ptd->qw1s[i];
480 0 : tr->flow_id =
481 0 : (tr->qw1s[0] & AVF_RXD_STATUS_FLM) ? ptd->flow_ids[i] : 0;
482 0 : for (j = 1; j < AVF_RX_MAX_DESC_IN_CHAIN; j++)
483 0 : tr->qw1s[j] = ptd->tails[i].qw1s[j - 1];
484 :
485 0 : n_trace--;
486 : }
487 :
488 : /* next */
489 0 : n_left--;
490 0 : i++;
491 0 : next_indices++;
492 : }
493 0 : vlib_set_trace_count (vm, node, n_trace);
494 : }
495 :
496 : /* enqueu the packets to the next nodes */
497 0 : if (PREDICT_FALSE (with_flows && (or_qw1 & AVF_RXD_STATUS_FLM)))
498 : {
499 : /* release next node's frame vector, in this case we use
500 : vlib_buffer_enqueue_to_next to place the packets
501 : */
502 0 : vlib_put_next_frame (vm, node, next_index, n_left_to_next);
503 :
504 : /* enqueue buffers to the next node */
505 0 : vlib_buffer_enqueue_to_next (vm, node, to_next, ptd->next, n_rx_packets);
506 : }
507 : else
508 : {
509 0 : if (PREDICT_TRUE (next_index == VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT))
510 : {
511 : vlib_next_frame_t *nf;
512 : vlib_frame_t *f;
513 : ethernet_input_frame_t *ef;
514 0 : nf = vlib_node_runtime_get_next_frame (vm, node, next_index);
515 0 : f = vlib_get_frame (vm, nf->frame);
516 0 : f->flags = ETH_INPUT_FRAME_F_SINGLE_SW_IF_IDX;
517 :
518 0 : ef = vlib_frame_scalar_args (f);
519 0 : ef->sw_if_index = ad->sw_if_index;
520 0 : ef->hw_if_index = ad->hw_if_index;
521 :
522 0 : if ((or_qw1 & AVF_RXD_ERROR_IPE) == 0)
523 0 : f->flags |= ETH_INPUT_FRAME_F_IP4_CKSUM_OK;
524 0 : vlib_frame_no_append (f);
525 : }
526 :
527 0 : n_left_to_next -= n_rx_packets;
528 0 : vlib_put_next_frame (vm, node, next_index, n_left_to_next);
529 : }
530 :
531 0 : vlib_increment_combined_counter (vnm->interface_main.combined_sw_if_counters
532 : + VNET_INTERFACE_COUNTER_RX, thr_idx,
533 : ad->hw_if_index, n_rx_packets, n_rx_bytes);
534 :
535 0 : done:
536 : /* refill rx ring */
537 0 : if (ad->flags & AVF_DEVICE_F_VA_DMA)
538 0 : avf_rxq_refill (vm, node, rxq, 1 /* use_va_dma */ );
539 : else
540 0 : avf_rxq_refill (vm, node, rxq, 0 /* use_va_dma */ );
541 :
542 0 : return n_rx_packets;
543 : }
544 :
545 2795 : VLIB_NODE_FN (avf_input_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
546 : vlib_frame_t * frame)
547 : {
548 0 : u32 n_rx = 0;
549 : vnet_hw_if_rxq_poll_vector_t *pv;
550 :
551 0 : pv = vnet_hw_if_get_rxq_poll_vector (vm, node);
552 :
553 0 : for (int i = 0; i < vec_len (pv); i++)
554 : {
555 0 : avf_device_t *ad = avf_get_device (pv[i].dev_instance);
556 0 : if ((ad->flags & AVF_DEVICE_F_ADMIN_UP) == 0)
557 0 : continue;
558 0 : if (PREDICT_FALSE (ad->flags & AVF_DEVICE_F_RX_FLOW_OFFLOAD))
559 0 : n_rx +=
560 0 : avf_device_input_inline (vm, node, frame, ad, pv[i].queue_id, 1);
561 : else
562 0 : n_rx +=
563 0 : avf_device_input_inline (vm, node, frame, ad, pv[i].queue_id, 0);
564 : }
565 :
566 0 : return n_rx;
567 : }
568 :
569 : /* *INDENT-OFF* */
570 164680 : VLIB_REGISTER_NODE (avf_input_node) = {
571 : .name = "avf-input",
572 : .sibling_of = "device-input",
573 : .format_trace = format_avf_input_trace,
574 : .type = VLIB_NODE_TYPE_INPUT,
575 : .state = VLIB_NODE_STATE_DISABLED,
576 : .n_errors = AVF_INPUT_N_ERROR,
577 : .error_strings = avf_input_error_strings,
578 : .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
579 : };
580 :
581 : /* *INDENT-ON* */
582 :
583 :
584 : /*
585 : * fd.io coding-style-patch-verification: ON
586 : *
587 : * Local Variables:
588 : * eval: (c-set-style "gnu")
589 : * End:
590 : */
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