1
2
3
4
5#include <stdint.h>
6#include <sys/types.h>
7#include <unistd.h>
8#include <fcntl.h>
9#include <linux/major.h>
10#include <sys/stat.h>
11#include <sys/sysmacros.h>
12#include <sys/socket.h>
13
14#include <rte_malloc.h>
15#include <rte_kvargs.h>
16#include <ethdev_vdev.h>
17#include <rte_bus_vdev.h>
18#include <rte_alarm.h>
19#include <rte_cycles.h>
20
21#include "virtio_ethdev.h"
22#include "virtio_logs.h"
23#include "virtio.h"
24#include "virtqueue.h"
25#include "virtio_rxtx.h"
26#include "virtio_user/virtio_user_dev.h"
27#include "virtio_user/vhost.h"
28
29#define virtio_user_get_dev(hwp) container_of(hwp, struct virtio_user_dev, hw)
30
31static void
32virtio_user_read_dev_config(struct virtio_hw *hw, size_t offset,
33 void *dst, int length)
34{
35 int i;
36 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
37
38 if (offset == offsetof(struct virtio_net_config, mac) &&
39 length == RTE_ETHER_ADDR_LEN) {
40 for (i = 0; i < RTE_ETHER_ADDR_LEN; ++i)
41 ((uint8_t *)dst)[i] = dev->mac_addr[i];
42 return;
43 }
44
45 if (offset == offsetof(struct virtio_net_config, status)) {
46 virtio_user_dev_update_link_state(dev);
47
48 *(uint16_t *)dst = dev->net_status;
49 }
50
51 if (offset == offsetof(struct virtio_net_config, max_virtqueue_pairs))
52 *(uint16_t *)dst = dev->max_queue_pairs;
53}
54
55static void
56virtio_user_write_dev_config(struct virtio_hw *hw, size_t offset,
57 const void *src, int length)
58{
59 int i;
60 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
61
62 if ((offset == offsetof(struct virtio_net_config, mac)) &&
63 (length == RTE_ETHER_ADDR_LEN))
64 for (i = 0; i < RTE_ETHER_ADDR_LEN; ++i)
65 dev->mac_addr[i] = ((const uint8_t *)src)[i];
66 else
67 PMD_DRV_LOG(ERR, "not supported offset=%zu, len=%d",
68 offset, length);
69}
70
71static void
72virtio_user_reset(struct virtio_hw *hw)
73{
74 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
75
76 if (dev->status & VIRTIO_CONFIG_STATUS_DRIVER_OK)
77 virtio_user_stop_device(dev);
78}
79
80static void
81virtio_user_set_status(struct virtio_hw *hw, uint8_t status)
82{
83 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
84 uint8_t old_status = dev->status;
85
86 if (status & VIRTIO_CONFIG_STATUS_FEATURES_OK &&
87 ~old_status & VIRTIO_CONFIG_STATUS_FEATURES_OK)
88 virtio_user_dev_set_features(dev);
89 if (status & VIRTIO_CONFIG_STATUS_DRIVER_OK)
90 virtio_user_start_device(dev);
91 else if (status == VIRTIO_CONFIG_STATUS_RESET)
92 virtio_user_reset(hw);
93
94 virtio_user_dev_set_status(dev, status);
95}
96
97static uint8_t
98virtio_user_get_status(struct virtio_hw *hw)
99{
100 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
101
102 virtio_user_dev_update_status(dev);
103
104 return dev->status;
105}
106
107static uint64_t
108virtio_user_get_features(struct virtio_hw *hw)
109{
110 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
111
112
113 return dev->device_features & VIRTIO_PMD_SUPPORTED_GUEST_FEATURES;
114}
115
116static void
117virtio_user_set_features(struct virtio_hw *hw, uint64_t features)
118{
119 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
120
121 dev->features = features & dev->device_features;
122}
123
124static int
125virtio_user_features_ok(struct virtio_hw *hw __rte_unused)
126{
127 return 0;
128}
129
130static uint8_t
131virtio_user_get_isr(struct virtio_hw *hw __rte_unused)
132{
133
134
135
136 return VIRTIO_ISR_CONFIG;
137}
138
139static uint16_t
140virtio_user_set_config_irq(struct virtio_hw *hw __rte_unused,
141 uint16_t vec __rte_unused)
142{
143 return 0;
144}
145
146static uint16_t
147virtio_user_set_queue_irq(struct virtio_hw *hw __rte_unused,
148 struct virtqueue *vq __rte_unused,
149 uint16_t vec)
150{
151
152 return vec;
153}
154
155
156
157
158
159static uint16_t
160virtio_user_get_queue_num(struct virtio_hw *hw, uint16_t queue_id __rte_unused)
161{
162 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
163
164
165 return dev->queue_size;
166}
167
168static void
169virtio_user_setup_queue_packed(struct virtqueue *vq,
170 struct virtio_user_dev *dev)
171{
172 uint16_t queue_idx = vq->vq_queue_index;
173 struct vring_packed *vring;
174 uint64_t desc_addr;
175 uint64_t avail_addr;
176 uint64_t used_addr;
177 uint16_t i;
178
179 vring = &dev->packed_vrings[queue_idx];
180 desc_addr = (uintptr_t)vq->vq_ring_virt_mem;
181 avail_addr = desc_addr + vq->vq_nentries *
182 sizeof(struct vring_packed_desc);
183 used_addr = RTE_ALIGN_CEIL(avail_addr +
184 sizeof(struct vring_packed_desc_event),
185 VIRTIO_VRING_ALIGN);
186 vring->num = vq->vq_nentries;
187 vring->desc = (void *)(uintptr_t)desc_addr;
188 vring->driver = (void *)(uintptr_t)avail_addr;
189 vring->device = (void *)(uintptr_t)used_addr;
190 dev->packed_queues[queue_idx].avail_wrap_counter = true;
191 dev->packed_queues[queue_idx].used_wrap_counter = true;
192
193 for (i = 0; i < vring->num; i++)
194 vring->desc[i].flags = 0;
195}
196
197static void
198virtio_user_setup_queue_split(struct virtqueue *vq, struct virtio_user_dev *dev)
199{
200 uint16_t queue_idx = vq->vq_queue_index;
201 uint64_t desc_addr, avail_addr, used_addr;
202
203 desc_addr = (uintptr_t)vq->vq_ring_virt_mem;
204 avail_addr = desc_addr + vq->vq_nentries * sizeof(struct vring_desc);
205 used_addr = RTE_ALIGN_CEIL(avail_addr + offsetof(struct vring_avail,
206 ring[vq->vq_nentries]),
207 VIRTIO_VRING_ALIGN);
208
209 dev->vrings[queue_idx].num = vq->vq_nentries;
210 dev->vrings[queue_idx].desc = (void *)(uintptr_t)desc_addr;
211 dev->vrings[queue_idx].avail = (void *)(uintptr_t)avail_addr;
212 dev->vrings[queue_idx].used = (void *)(uintptr_t)used_addr;
213}
214
215static int
216virtio_user_setup_queue(struct virtio_hw *hw, struct virtqueue *vq)
217{
218 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
219
220 if (virtio_with_packed_queue(hw))
221 virtio_user_setup_queue_packed(vq, dev);
222 else
223 virtio_user_setup_queue_split(vq, dev);
224
225 return 0;
226}
227
228static void
229virtio_user_del_queue(struct virtio_hw *hw, struct virtqueue *vq)
230{
231
232
233
234
235
236
237
238
239
240 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
241
242 close(dev->callfds[vq->vq_queue_index]);
243 close(dev->kickfds[vq->vq_queue_index]);
244}
245
246static void
247virtio_user_notify_queue(struct virtio_hw *hw, struct virtqueue *vq)
248{
249 uint64_t buf = 1;
250 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
251
252 if (hw->cvq && (hw->cvq->vq == vq)) {
253 if (virtio_with_packed_queue(vq->hw))
254 virtio_user_handle_cq_packed(dev, vq->vq_queue_index);
255 else
256 virtio_user_handle_cq(dev, vq->vq_queue_index);
257 return;
258 }
259
260 if (write(dev->kickfds[vq->vq_queue_index], &buf, sizeof(buf)) < 0)
261 PMD_DRV_LOG(ERR, "failed to kick backend: %s",
262 strerror(errno));
263}
264
265static int
266virtio_user_dev_close(struct virtio_hw *hw)
267{
268 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
269
270 virtio_user_dev_uninit(dev);
271
272 return 0;
273}
274
275const struct virtio_ops virtio_user_ops = {
276 .read_dev_cfg = virtio_user_read_dev_config,
277 .write_dev_cfg = virtio_user_write_dev_config,
278 .get_status = virtio_user_get_status,
279 .set_status = virtio_user_set_status,
280 .get_features = virtio_user_get_features,
281 .set_features = virtio_user_set_features,
282 .features_ok = virtio_user_features_ok,
283 .get_isr = virtio_user_get_isr,
284 .set_config_irq = virtio_user_set_config_irq,
285 .set_queue_irq = virtio_user_set_queue_irq,
286 .get_queue_num = virtio_user_get_queue_num,
287 .setup_queue = virtio_user_setup_queue,
288 .del_queue = virtio_user_del_queue,
289 .notify_queue = virtio_user_notify_queue,
290 .dev_close = virtio_user_dev_close,
291};
292
293static const char *valid_args[] = {
294#define VIRTIO_USER_ARG_QUEUES_NUM "queues"
295 VIRTIO_USER_ARG_QUEUES_NUM,
296#define VIRTIO_USER_ARG_CQ_NUM "cq"
297 VIRTIO_USER_ARG_CQ_NUM,
298#define VIRTIO_USER_ARG_MAC "mac"
299 VIRTIO_USER_ARG_MAC,
300#define VIRTIO_USER_ARG_PATH "path"
301 VIRTIO_USER_ARG_PATH,
302#define VIRTIO_USER_ARG_QUEUE_SIZE "queue_size"
303 VIRTIO_USER_ARG_QUEUE_SIZE,
304#define VIRTIO_USER_ARG_INTERFACE_NAME "iface"
305 VIRTIO_USER_ARG_INTERFACE_NAME,
306#define VIRTIO_USER_ARG_SERVER_MODE "server"
307 VIRTIO_USER_ARG_SERVER_MODE,
308#define VIRTIO_USER_ARG_MRG_RXBUF "mrg_rxbuf"
309 VIRTIO_USER_ARG_MRG_RXBUF,
310#define VIRTIO_USER_ARG_IN_ORDER "in_order"
311 VIRTIO_USER_ARG_IN_ORDER,
312#define VIRTIO_USER_ARG_PACKED_VQ "packed_vq"
313 VIRTIO_USER_ARG_PACKED_VQ,
314#define VIRTIO_USER_ARG_SPEED "speed"
315 VIRTIO_USER_ARG_SPEED,
316#define VIRTIO_USER_ARG_VECTORIZED "vectorized"
317 VIRTIO_USER_ARG_VECTORIZED,
318 NULL
319};
320
321#define VIRTIO_USER_DEF_CQ_EN 0
322#define VIRTIO_USER_DEF_Q_NUM 1
323#define VIRTIO_USER_DEF_Q_SZ 256
324#define VIRTIO_USER_DEF_SERVER_MODE 0
325
326static int
327get_string_arg(const char *key __rte_unused,
328 const char *value, void *extra_args)
329{
330 if (!value || !extra_args)
331 return -EINVAL;
332
333 *(char **)extra_args = strdup(value);
334
335 if (!*(char **)extra_args)
336 return -ENOMEM;
337
338 return 0;
339}
340
341static int
342get_integer_arg(const char *key __rte_unused,
343 const char *value, void *extra_args)
344{
345 uint64_t integer = 0;
346 if (!value || !extra_args)
347 return -EINVAL;
348 errno = 0;
349 integer = strtoull(value, NULL, 0);
350
351
352
353 if (errno == 0)
354 *(uint64_t *)extra_args = integer;
355 return -errno;
356}
357
358static uint32_t
359vdpa_dynamic_major_num(void)
360{
361 FILE *fp;
362 char *line = NULL;
363 size_t size;
364 char name[11];
365 bool found = false;
366 uint32_t num;
367
368 fp = fopen("/proc/devices", "r");
369 if (fp == NULL) {
370 PMD_INIT_LOG(ERR, "Cannot open /proc/devices: %s",
371 strerror(errno));
372 return UNNAMED_MAJOR;
373 }
374
375 while (getline(&line, &size, fp) > 0) {
376 char *stripped = line + strspn(line, " ");
377 if ((sscanf(stripped, "%u %10s", &num, name) == 2) &&
378 (strncmp(name, "vhost-vdpa", 10) == 0)) {
379 found = true;
380 break;
381 }
382 }
383 fclose(fp);
384 return found ? num : UNNAMED_MAJOR;
385}
386
387static enum virtio_user_backend_type
388virtio_user_backend_type(const char *path)
389{
390 struct stat sb;
391
392 if (stat(path, &sb) == -1) {
393 if (errno == ENOENT)
394 return VIRTIO_USER_BACKEND_VHOST_USER;
395
396 PMD_INIT_LOG(ERR, "Stat fails: %s (%s)\n", path,
397 strerror(errno));
398 return VIRTIO_USER_BACKEND_UNKNOWN;
399 }
400
401 if (S_ISSOCK(sb.st_mode)) {
402 return VIRTIO_USER_BACKEND_VHOST_USER;
403 } else if (S_ISCHR(sb.st_mode)) {
404 if (major(sb.st_rdev) == MISC_MAJOR)
405 return VIRTIO_USER_BACKEND_VHOST_KERNEL;
406 if (major(sb.st_rdev) == vdpa_dynamic_major_num())
407 return VIRTIO_USER_BACKEND_VHOST_VDPA;
408 }
409 return VIRTIO_USER_BACKEND_UNKNOWN;
410}
411
412static struct rte_eth_dev *
413virtio_user_eth_dev_alloc(struct rte_vdev_device *vdev)
414{
415 struct rte_eth_dev *eth_dev;
416 struct rte_eth_dev_data *data;
417 struct virtio_hw *hw;
418 struct virtio_user_dev *dev;
419
420 eth_dev = rte_eth_vdev_allocate(vdev, sizeof(*dev));
421 if (!eth_dev) {
422 PMD_INIT_LOG(ERR, "cannot alloc rte_eth_dev");
423 return NULL;
424 }
425
426 data = eth_dev->data;
427 dev = eth_dev->data->dev_private;
428 hw = &dev->hw;
429
430 hw->port_id = data->port_id;
431 dev->port_id = data->port_id;
432 VIRTIO_OPS(hw) = &virtio_user_ops;
433
434 hw->intr_lsc = 1;
435 hw->use_vec_rx = 0;
436 hw->use_vec_tx = 0;
437 hw->use_inorder_rx = 0;
438 hw->use_inorder_tx = 0;
439
440 return eth_dev;
441}
442
443static void
444virtio_user_eth_dev_free(struct rte_eth_dev *eth_dev)
445{
446 rte_eth_dev_release_port(eth_dev);
447}
448
449
450
451
452
453static int
454virtio_user_pmd_probe(struct rte_vdev_device *vdev)
455{
456 struct rte_kvargs *kvlist = NULL;
457 struct rte_eth_dev *eth_dev;
458 struct virtio_hw *hw;
459 struct virtio_user_dev *dev;
460 enum virtio_user_backend_type backend_type = VIRTIO_USER_BACKEND_UNKNOWN;
461 uint64_t queues = VIRTIO_USER_DEF_Q_NUM;
462 uint64_t cq = VIRTIO_USER_DEF_CQ_EN;
463 uint64_t queue_size = VIRTIO_USER_DEF_Q_SZ;
464 uint64_t server_mode = VIRTIO_USER_DEF_SERVER_MODE;
465 uint64_t mrg_rxbuf = 1;
466 uint64_t in_order = 1;
467 uint64_t packed_vq = 0;
468 uint64_t vectorized = 0;
469 char *path = NULL;
470 char *ifname = NULL;
471 char *mac_addr = NULL;
472 int ret = -1;
473
474 RTE_BUILD_BUG_ON(offsetof(struct virtio_user_dev, hw) != 0);
475
476 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
477 const char *name = rte_vdev_device_name(vdev);
478 eth_dev = rte_eth_dev_attach_secondary(name);
479 if (!eth_dev) {
480 PMD_INIT_LOG(ERR, "Failed to probe %s", name);
481 return -1;
482 }
483
484 dev = eth_dev->data->dev_private;
485 hw = &dev->hw;
486 VIRTIO_OPS(hw) = &virtio_user_ops;
487
488 if (eth_virtio_dev_init(eth_dev) < 0) {
489 PMD_INIT_LOG(ERR, "eth_virtio_dev_init fails");
490 rte_eth_dev_release_port(eth_dev);
491 return -1;
492 }
493
494 eth_dev->dev_ops = &virtio_user_secondary_eth_dev_ops;
495 eth_dev->device = &vdev->device;
496 rte_eth_dev_probing_finish(eth_dev);
497 return 0;
498 }
499
500 kvlist = rte_kvargs_parse(rte_vdev_device_args(vdev), valid_args);
501 if (!kvlist) {
502 PMD_INIT_LOG(ERR, "error when parsing param");
503 goto end;
504 }
505
506 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_PATH) == 1) {
507 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_PATH,
508 &get_string_arg, &path) < 0) {
509 PMD_INIT_LOG(ERR, "error to parse %s",
510 VIRTIO_USER_ARG_PATH);
511 goto end;
512 }
513 } else {
514 PMD_INIT_LOG(ERR, "arg %s is mandatory for virtio_user",
515 VIRTIO_USER_ARG_PATH);
516 goto end;
517 }
518
519 backend_type = virtio_user_backend_type(path);
520 if (backend_type == VIRTIO_USER_BACKEND_UNKNOWN) {
521 PMD_INIT_LOG(ERR,
522 "unable to determine backend type for path %s",
523 path);
524 goto end;
525 }
526 PMD_INIT_LOG(INFO, "Backend type detected: %s",
527 virtio_user_backend_strings[backend_type]);
528
529 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_INTERFACE_NAME) == 1) {
530 if (backend_type != VIRTIO_USER_BACKEND_VHOST_KERNEL) {
531 PMD_INIT_LOG(ERR,
532 "arg %s applies only to vhost-kernel backend",
533 VIRTIO_USER_ARG_INTERFACE_NAME);
534 goto end;
535 }
536
537 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_INTERFACE_NAME,
538 &get_string_arg, &ifname) < 0) {
539 PMD_INIT_LOG(ERR, "error to parse %s",
540 VIRTIO_USER_ARG_INTERFACE_NAME);
541 goto end;
542 }
543 }
544
545 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_MAC) == 1) {
546 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_MAC,
547 &get_string_arg, &mac_addr) < 0) {
548 PMD_INIT_LOG(ERR, "error to parse %s",
549 VIRTIO_USER_ARG_MAC);
550 goto end;
551 }
552 }
553
554 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_QUEUE_SIZE) == 1) {
555 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_QUEUE_SIZE,
556 &get_integer_arg, &queue_size) < 0) {
557 PMD_INIT_LOG(ERR, "error to parse %s",
558 VIRTIO_USER_ARG_QUEUE_SIZE);
559 goto end;
560 }
561 }
562
563 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_QUEUES_NUM) == 1) {
564 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_QUEUES_NUM,
565 &get_integer_arg, &queues) < 0) {
566 PMD_INIT_LOG(ERR, "error to parse %s",
567 VIRTIO_USER_ARG_QUEUES_NUM);
568 goto end;
569 }
570 }
571
572 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_SERVER_MODE) == 1) {
573 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_SERVER_MODE,
574 &get_integer_arg, &server_mode) < 0) {
575 PMD_INIT_LOG(ERR, "error to parse %s",
576 VIRTIO_USER_ARG_SERVER_MODE);
577 goto end;
578 }
579 }
580
581 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_CQ_NUM) == 1) {
582 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_CQ_NUM,
583 &get_integer_arg, &cq) < 0) {
584 PMD_INIT_LOG(ERR, "error to parse %s",
585 VIRTIO_USER_ARG_CQ_NUM);
586 goto end;
587 }
588 } else if (queues > 1) {
589 cq = 1;
590 }
591
592 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_PACKED_VQ) == 1) {
593 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_PACKED_VQ,
594 &get_integer_arg, &packed_vq) < 0) {
595 PMD_INIT_LOG(ERR, "error to parse %s",
596 VIRTIO_USER_ARG_PACKED_VQ);
597 goto end;
598 }
599 }
600
601 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_VECTORIZED) == 1) {
602 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_VECTORIZED,
603 &get_integer_arg, &vectorized) < 0) {
604 PMD_INIT_LOG(ERR, "error to parse %s",
605 VIRTIO_USER_ARG_VECTORIZED);
606 goto end;
607 }
608 }
609
610 if (queues > 1 && cq == 0) {
611 PMD_INIT_LOG(ERR, "multi-q requires ctrl-q");
612 goto end;
613 }
614
615 if (queues > VIRTIO_MAX_VIRTQUEUE_PAIRS) {
616 PMD_INIT_LOG(ERR, "arg %s %" PRIu64 " exceeds the limit %u",
617 VIRTIO_USER_ARG_QUEUES_NUM, queues,
618 VIRTIO_MAX_VIRTQUEUE_PAIRS);
619 goto end;
620 }
621
622 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_MRG_RXBUF) == 1) {
623 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_MRG_RXBUF,
624 &get_integer_arg, &mrg_rxbuf) < 0) {
625 PMD_INIT_LOG(ERR, "error to parse %s",
626 VIRTIO_USER_ARG_MRG_RXBUF);
627 goto end;
628 }
629 }
630
631 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_IN_ORDER) == 1) {
632 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_IN_ORDER,
633 &get_integer_arg, &in_order) < 0) {
634 PMD_INIT_LOG(ERR, "error to parse %s",
635 VIRTIO_USER_ARG_IN_ORDER);
636 goto end;
637 }
638 }
639
640 eth_dev = virtio_user_eth_dev_alloc(vdev);
641 if (!eth_dev) {
642 PMD_INIT_LOG(ERR, "virtio_user fails to alloc device");
643 goto end;
644 }
645
646 dev = eth_dev->data->dev_private;
647 hw = &dev->hw;
648 if (virtio_user_dev_init(dev, path, queues, cq,
649 queue_size, mac_addr, &ifname, server_mode,
650 mrg_rxbuf, in_order, packed_vq, backend_type) < 0) {
651 PMD_INIT_LOG(ERR, "virtio_user_dev_init fails");
652 virtio_user_eth_dev_free(eth_dev);
653 goto end;
654 }
655
656
657 if (eth_virtio_dev_init(eth_dev) < 0) {
658 PMD_INIT_LOG(ERR, "eth_virtio_dev_init fails");
659 virtio_user_eth_dev_free(eth_dev);
660 goto end;
661 }
662
663 if (vectorized) {
664 if (packed_vq) {
665#if defined(CC_AVX512_SUPPORT) || defined(RTE_ARCH_ARM)
666 hw->use_vec_rx = 1;
667 hw->use_vec_tx = 1;
668#else
669 PMD_INIT_LOG(INFO,
670 "building environment do not support packed ring vectorized");
671#endif
672 } else {
673 hw->use_vec_rx = 1;
674 }
675 }
676
677 rte_eth_dev_probing_finish(eth_dev);
678 ret = 0;
679
680end:
681 if (kvlist)
682 rte_kvargs_free(kvlist);
683 if (path)
684 free(path);
685 if (mac_addr)
686 free(mac_addr);
687 if (ifname)
688 free(ifname);
689 return ret;
690}
691
692static int
693virtio_user_pmd_remove(struct rte_vdev_device *vdev)
694{
695 const char *name;
696 struct rte_eth_dev *eth_dev;
697
698 if (!vdev)
699 return -EINVAL;
700
701 name = rte_vdev_device_name(vdev);
702 PMD_DRV_LOG(INFO, "Un-Initializing %s", name);
703 eth_dev = rte_eth_dev_allocated(name);
704
705 if (!eth_dev)
706 return 0;
707
708 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
709 return rte_eth_dev_release_port(eth_dev);
710
711
712 return rte_eth_dev_close(eth_dev->data->port_id);
713}
714
715static int virtio_user_pmd_dma_map(struct rte_vdev_device *vdev, void *addr,
716 uint64_t iova, size_t len)
717{
718 const char *name;
719 struct rte_eth_dev *eth_dev;
720 struct virtio_user_dev *dev;
721
722 if (!vdev)
723 return -EINVAL;
724
725 name = rte_vdev_device_name(vdev);
726 eth_dev = rte_eth_dev_allocated(name);
727
728 if (!eth_dev)
729 return 0;
730
731 dev = eth_dev->data->dev_private;
732
733 if (dev->ops->dma_map)
734 return dev->ops->dma_map(dev, addr, iova, len);
735
736 return 0;
737}
738
739static int virtio_user_pmd_dma_unmap(struct rte_vdev_device *vdev, void *addr,
740 uint64_t iova, size_t len)
741{
742 const char *name;
743 struct rte_eth_dev *eth_dev;
744 struct virtio_user_dev *dev;
745
746 if (!vdev)
747 return -EINVAL;
748
749 name = rte_vdev_device_name(vdev);
750 eth_dev = rte_eth_dev_allocated(name);
751
752 if (!eth_dev)
753 return 0;
754
755 dev = eth_dev->data->dev_private;
756
757 if (dev->ops->dma_unmap)
758 return dev->ops->dma_unmap(dev, addr, iova, len);
759
760 return 0;
761}
762
763static struct rte_vdev_driver virtio_user_driver = {
764 .probe = virtio_user_pmd_probe,
765 .remove = virtio_user_pmd_remove,
766 .dma_map = virtio_user_pmd_dma_map,
767 .dma_unmap = virtio_user_pmd_dma_unmap,
768 .drv_flags = RTE_VDEV_DRV_NEED_IOVA_AS_VA,
769};
770
771RTE_PMD_REGISTER_VDEV(net_virtio_user, virtio_user_driver);
772RTE_PMD_REGISTER_ALIAS(net_virtio_user, virtio_user);
773RTE_PMD_REGISTER_PARAM_STRING(net_virtio_user,
774 "path=<path> "
775 "mac=<mac addr> "
776 "cq=<int> "
777 "queue_size=<int> "
778 "queues=<int> "
779 "iface=<string> "
780 "server=<0|1> "
781 "mrg_rxbuf=<0|1> "
782 "in_order=<0|1> "
783 "packed_vq=<0|1> "
784 "speed=<int> "
785 "vectorized=<0|1>");
786
