ethdev: add an argument to internal callback function
[dpdk.git] / drivers / net / enic / enic_main.c
1 /*
2  * Copyright 2008-2014 Cisco Systems, Inc.  All rights reserved.
3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
4  *
5  * Copyright (c) 2014, Cisco Systems, Inc.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31  * POSSIBILITY OF SUCH DAMAGE.
32  *
33  */
34
35 #include <stdio.h>
36
37 #include <sys/stat.h>
38 #include <sys/mman.h>
39 #include <fcntl.h>
40 #include <libgen.h>
41
42 #include <rte_pci.h>
43 #include <rte_memzone.h>
44 #include <rte_malloc.h>
45 #include <rte_mbuf.h>
46 #include <rte_string_fns.h>
47 #include <rte_ethdev.h>
48
49 #include "enic_compat.h"
50 #include "enic.h"
51 #include "wq_enet_desc.h"
52 #include "rq_enet_desc.h"
53 #include "cq_enet_desc.h"
54 #include "vnic_enet.h"
55 #include "vnic_dev.h"
56 #include "vnic_wq.h"
57 #include "vnic_rq.h"
58 #include "vnic_cq.h"
59 #include "vnic_intr.h"
60 #include "vnic_nic.h"
61
62 static inline int enic_is_sriov_vf(struct enic *enic)
63 {
64         return enic->pdev->id.device_id == PCI_DEVICE_ID_CISCO_VIC_ENET_VF;
65 }
66
67 static int is_zero_addr(uint8_t *addr)
68 {
69         return !(addr[0] |  addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
70 }
71
72 static int is_mcast_addr(uint8_t *addr)
73 {
74         return addr[0] & 1;
75 }
76
77 static int is_eth_addr_valid(uint8_t *addr)
78 {
79         return !is_mcast_addr(addr) && !is_zero_addr(addr);
80 }
81
82 static void
83 enic_rxmbuf_queue_release(__rte_unused struct enic *enic, struct vnic_rq *rq)
84 {
85         uint16_t i;
86
87         if (!rq || !rq->mbuf_ring) {
88                 dev_debug(enic, "Pointer to rq or mbuf_ring is NULL");
89                 return;
90         }
91
92         for (i = 0; i < rq->ring.desc_count; i++) {
93                 if (rq->mbuf_ring[i]) {
94                         rte_pktmbuf_free_seg(rq->mbuf_ring[i]);
95                         rq->mbuf_ring[i] = NULL;
96                 }
97         }
98 }
99
100 void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size)
101 {
102         vnic_set_hdr_split_size(enic->vdev, split_hdr_size);
103 }
104
105 static void enic_free_wq_buf(struct vnic_wq_buf *buf)
106 {
107         struct rte_mbuf *mbuf = (struct rte_mbuf *)buf->mb;
108
109         rte_pktmbuf_free_seg(mbuf);
110         buf->mb = NULL;
111 }
112
113 static void enic_log_q_error(struct enic *enic)
114 {
115         unsigned int i;
116         u32 error_status;
117
118         for (i = 0; i < enic->wq_count; i++) {
119                 error_status = vnic_wq_error_status(&enic->wq[i]);
120                 if (error_status)
121                         dev_err(enic, "WQ[%d] error_status %d\n", i,
122                                 error_status);
123         }
124
125         for (i = 0; i < enic_vnic_rq_count(enic); i++) {
126                 if (!enic->rq[i].in_use)
127                         continue;
128                 error_status = vnic_rq_error_status(&enic->rq[i]);
129                 if (error_status)
130                         dev_err(enic, "RQ[%d] error_status %d\n", i,
131                                 error_status);
132         }
133 }
134
135 static void enic_clear_soft_stats(struct enic *enic)
136 {
137         struct enic_soft_stats *soft_stats = &enic->soft_stats;
138         rte_atomic64_clear(&soft_stats->rx_nombuf);
139         rte_atomic64_clear(&soft_stats->rx_packet_errors);
140 }
141
142 static void enic_init_soft_stats(struct enic *enic)
143 {
144         struct enic_soft_stats *soft_stats = &enic->soft_stats;
145         rte_atomic64_init(&soft_stats->rx_nombuf);
146         rte_atomic64_init(&soft_stats->rx_packet_errors);
147         enic_clear_soft_stats(enic);
148 }
149
150 void enic_dev_stats_clear(struct enic *enic)
151 {
152         if (vnic_dev_stats_clear(enic->vdev))
153                 dev_err(enic, "Error in clearing stats\n");
154         enic_clear_soft_stats(enic);
155 }
156
157 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
158 {
159         struct vnic_stats *stats;
160         struct enic_soft_stats *soft_stats = &enic->soft_stats;
161         int64_t rx_truncated;
162         uint64_t rx_packet_errors;
163
164         if (vnic_dev_stats_dump(enic->vdev, &stats)) {
165                 dev_err(enic, "Error in getting stats\n");
166                 return;
167         }
168
169         /* The number of truncated packets can only be calculated by
170          * subtracting a hardware counter from error packets received by
171          * the driver. Note: this causes transient inaccuracies in the
172          * ipackets count. Also, the length of truncated packets are
173          * counted in ibytes even though truncated packets are dropped
174          * which can make ibytes be slightly higher than it should be.
175          */
176         rx_packet_errors = rte_atomic64_read(&soft_stats->rx_packet_errors);
177         rx_truncated = rx_packet_errors - stats->rx.rx_errors -
178                 stats->rx.rx_no_bufs;
179
180         r_stats->ipackets = stats->rx.rx_frames_ok - rx_truncated;
181         r_stats->opackets = stats->tx.tx_frames_ok;
182
183         r_stats->ibytes = stats->rx.rx_bytes_ok;
184         r_stats->obytes = stats->tx.tx_bytes_ok;
185
186         r_stats->ierrors = stats->rx.rx_errors + stats->rx.rx_drop;
187         r_stats->oerrors = stats->tx.tx_errors;
188
189         r_stats->imissed = stats->rx.rx_no_bufs + rx_truncated;
190
191         r_stats->rx_nombuf = rte_atomic64_read(&soft_stats->rx_nombuf);
192 }
193
194 void enic_del_mac_address(struct enic *enic)
195 {
196         if (vnic_dev_del_addr(enic->vdev, enic->mac_addr))
197                 dev_err(enic, "del mac addr failed\n");
198 }
199
200 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr)
201 {
202         int err;
203
204         if (!is_eth_addr_valid(mac_addr)) {
205                 dev_err(enic, "invalid mac address\n");
206                 return;
207         }
208
209         err = vnic_dev_del_addr(enic->vdev, enic->mac_addr);
210         if (err) {
211                 dev_err(enic, "del mac addr failed\n");
212                 return;
213         }
214
215         ether_addr_copy((struct ether_addr *)mac_addr,
216                 (struct ether_addr *)enic->mac_addr);
217
218         err = vnic_dev_add_addr(enic->vdev, mac_addr);
219         if (err) {
220                 dev_err(enic, "add mac addr failed\n");
221                 return;
222         }
223 }
224
225 static void
226 enic_free_rq_buf(struct rte_mbuf **mbuf)
227 {
228         if (*mbuf == NULL)
229                 return;
230
231         rte_pktmbuf_free(*mbuf);
232         mbuf = NULL;
233 }
234
235 void enic_init_vnic_resources(struct enic *enic)
236 {
237         unsigned int error_interrupt_enable = 1;
238         unsigned int error_interrupt_offset = 0;
239         unsigned int index = 0;
240         unsigned int cq_idx;
241         struct vnic_rq *data_rq;
242
243         for (index = 0; index < enic->rq_count; index++) {
244                 cq_idx = enic_cq_rq(enic, enic_sop_rq(index));
245
246                 vnic_rq_init(&enic->rq[enic_sop_rq(index)],
247                         cq_idx,
248                         error_interrupt_enable,
249                         error_interrupt_offset);
250
251                 data_rq = &enic->rq[enic_data_rq(index)];
252                 if (data_rq->in_use)
253                         vnic_rq_init(data_rq,
254                                      cq_idx,
255                                      error_interrupt_enable,
256                                      error_interrupt_offset);
257
258                 vnic_cq_init(&enic->cq[cq_idx],
259                         0 /* flow_control_enable */,
260                         1 /* color_enable */,
261                         0 /* cq_head */,
262                         0 /* cq_tail */,
263                         1 /* cq_tail_color */,
264                         0 /* interrupt_enable */,
265                         1 /* cq_entry_enable */,
266                         0 /* cq_message_enable */,
267                         0 /* interrupt offset */,
268                         0 /* cq_message_addr */);
269         }
270
271         for (index = 0; index < enic->wq_count; index++) {
272                 vnic_wq_init(&enic->wq[index],
273                         enic_cq_wq(enic, index),
274                         error_interrupt_enable,
275                         error_interrupt_offset);
276
277                 cq_idx = enic_cq_wq(enic, index);
278                 vnic_cq_init(&enic->cq[cq_idx],
279                         0 /* flow_control_enable */,
280                         1 /* color_enable */,
281                         0 /* cq_head */,
282                         0 /* cq_tail */,
283                         1 /* cq_tail_color */,
284                         0 /* interrupt_enable */,
285                         0 /* cq_entry_enable */,
286                         1 /* cq_message_enable */,
287                         0 /* interrupt offset */,
288                         (u64)enic->wq[index].cqmsg_rz->phys_addr);
289         }
290
291         vnic_intr_init(&enic->intr,
292                 enic->config.intr_timer_usec,
293                 enic->config.intr_timer_type,
294                 /*mask_on_assertion*/1);
295 }
296
297
298 static int
299 enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
300 {
301         struct rte_mbuf *mb;
302         struct rq_enet_desc *rqd = rq->ring.descs;
303         unsigned i;
304         dma_addr_t dma_addr;
305
306         if (!rq->in_use)
307                 return 0;
308
309         dev_debug(enic, "queue %u, allocating %u rx queue mbufs\n", rq->index,
310                   rq->ring.desc_count);
311
312         for (i = 0; i < rq->ring.desc_count; i++, rqd++) {
313                 mb = rte_mbuf_raw_alloc(rq->mp);
314                 if (mb == NULL) {
315                         dev_err(enic, "RX mbuf alloc failed queue_id=%u\n",
316                         (unsigned)rq->index);
317                         return -ENOMEM;
318                 }
319
320                 mb->data_off = RTE_PKTMBUF_HEADROOM;
321                 dma_addr = (dma_addr_t)(mb->buf_physaddr
322                            + RTE_PKTMBUF_HEADROOM);
323                 rq_enet_desc_enc(rqd, dma_addr,
324                                 (rq->is_sop ? RQ_ENET_TYPE_ONLY_SOP
325                                 : RQ_ENET_TYPE_NOT_SOP),
326                                 mb->buf_len - RTE_PKTMBUF_HEADROOM);
327                 rq->mbuf_ring[i] = mb;
328         }
329
330         /* make sure all prior writes are complete before doing the PIO write */
331         rte_rmb();
332
333         /* Post all but the last buffer to VIC. */
334         rq->posted_index = rq->ring.desc_count - 1;
335
336         rq->rx_nb_hold = 0;
337
338         dev_debug(enic, "port=%u, qidx=%u, Write %u posted idx, %u sw held\n",
339                 enic->port_id, rq->index, rq->posted_index, rq->rx_nb_hold);
340         iowrite32(rq->posted_index, &rq->ctrl->posted_index);
341         iowrite32(0, &rq->ctrl->fetch_index);
342         rte_rmb();
343
344         return 0;
345
346 }
347
348 static void *
349 enic_alloc_consistent(void *priv, size_t size,
350         dma_addr_t *dma_handle, u8 *name)
351 {
352         void *vaddr;
353         const struct rte_memzone *rz;
354         *dma_handle = 0;
355         struct enic *enic = (struct enic *)priv;
356         struct enic_memzone_entry *mze;
357
358         rz = rte_memzone_reserve_aligned((const char *)name,
359                                          size, SOCKET_ID_ANY, 0, ENIC_ALIGN);
360         if (!rz) {
361                 pr_err("%s : Failed to allocate memory requested for %s\n",
362                         __func__, name);
363                 return NULL;
364         }
365
366         vaddr = rz->addr;
367         *dma_handle = (dma_addr_t)rz->phys_addr;
368
369         mze = rte_malloc("enic memzone entry",
370                          sizeof(struct enic_memzone_entry), 0);
371
372         if (!mze) {
373                 pr_err("%s : Failed to allocate memory for memzone list\n",
374                        __func__);
375                 rte_memzone_free(rz);
376         }
377
378         mze->rz = rz;
379
380         rte_spinlock_lock(&enic->memzone_list_lock);
381         LIST_INSERT_HEAD(&enic->memzone_list, mze, entries);
382         rte_spinlock_unlock(&enic->memzone_list_lock);
383
384         return vaddr;
385 }
386
387 static void
388 enic_free_consistent(void *priv,
389                      __rte_unused size_t size,
390                      void *vaddr,
391                      dma_addr_t dma_handle)
392 {
393         struct enic_memzone_entry *mze;
394         struct enic *enic = (struct enic *)priv;
395
396         rte_spinlock_lock(&enic->memzone_list_lock);
397         LIST_FOREACH(mze, &enic->memzone_list, entries) {
398                 if (mze->rz->addr == vaddr &&
399                     mze->rz->phys_addr == dma_handle)
400                         break;
401         }
402         if (mze == NULL) {
403                 rte_spinlock_unlock(&enic->memzone_list_lock);
404                 dev_warning(enic,
405                             "Tried to free memory, but couldn't find it in the memzone list\n");
406                 return;
407         }
408         LIST_REMOVE(mze, entries);
409         rte_spinlock_unlock(&enic->memzone_list_lock);
410         rte_memzone_free(mze->rz);
411         rte_free(mze);
412 }
413
414 int enic_link_update(struct enic *enic)
415 {
416         struct rte_eth_dev *eth_dev = enic->rte_dev;
417         int ret;
418         int link_status = 0;
419
420         link_status = enic_get_link_status(enic);
421         ret = (link_status == enic->link_status);
422         enic->link_status = link_status;
423         eth_dev->data->dev_link.link_status = link_status;
424         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
425         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
426         return ret;
427 }
428
429 static void
430 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
431         void *arg)
432 {
433         struct rte_eth_dev *dev = (struct rte_eth_dev *)arg;
434         struct enic *enic = pmd_priv(dev);
435
436         vnic_intr_return_all_credits(&enic->intr);
437
438         enic_link_update(enic);
439         _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
440         enic_log_q_error(enic);
441 }
442
443 int enic_enable(struct enic *enic)
444 {
445         unsigned int index;
446         int err;
447         struct rte_eth_dev *eth_dev = enic->rte_dev;
448
449         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
450         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
451
452         /* vnic notification of link status has already been turned on in
453          * enic_dev_init() which is called during probe time.  Here we are
454          * just turning on interrupt vector 0 if needed.
455          */
456         if (eth_dev->data->dev_conf.intr_conf.lsc)
457                 vnic_dev_notify_set(enic->vdev, 0);
458
459         if (enic_clsf_init(enic))
460                 dev_warning(enic, "Init of hash table for clsf failed."\
461                         "Flow director feature will not work\n");
462
463         for (index = 0; index < enic->rq_count; index++) {
464                 err = enic_alloc_rx_queue_mbufs(enic,
465                         &enic->rq[enic_sop_rq(index)]);
466                 if (err) {
467                         dev_err(enic, "Failed to alloc sop RX queue mbufs\n");
468                         return err;
469                 }
470                 err = enic_alloc_rx_queue_mbufs(enic,
471                         &enic->rq[enic_data_rq(index)]);
472                 if (err) {
473                         /* release the allocated mbufs for the sop rq*/
474                         enic_rxmbuf_queue_release(enic,
475                                 &enic->rq[enic_sop_rq(index)]);
476
477                         dev_err(enic, "Failed to alloc data RX queue mbufs\n");
478                         return err;
479                 }
480         }
481
482         for (index = 0; index < enic->wq_count; index++)
483                 enic_start_wq(enic, index);
484         for (index = 0; index < enic->rq_count; index++)
485                 enic_start_rq(enic, index);
486
487         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
488
489         vnic_dev_enable_wait(enic->vdev);
490
491         /* Register and enable error interrupt */
492         rte_intr_callback_register(&(enic->pdev->intr_handle),
493                 enic_intr_handler, (void *)enic->rte_dev);
494
495         rte_intr_enable(&(enic->pdev->intr_handle));
496         vnic_intr_unmask(&enic->intr);
497
498         return 0;
499 }
500
501 int enic_alloc_intr_resources(struct enic *enic)
502 {
503         int err;
504
505         dev_info(enic, "vNIC resources used:  "\
506                 "wq %d rq %d cq %d intr %d\n",
507                 enic->wq_count, enic_vnic_rq_count(enic),
508                 enic->cq_count, enic->intr_count);
509
510         err = vnic_intr_alloc(enic->vdev, &enic->intr, 0);
511         if (err)
512                 enic_free_vnic_resources(enic);
513
514         return err;
515 }
516
517 void enic_free_rq(void *rxq)
518 {
519         struct vnic_rq *rq_sop, *rq_data;
520         struct enic *enic;
521
522         if (rxq == NULL)
523                 return;
524
525         rq_sop = (struct vnic_rq *)rxq;
526         enic = vnic_dev_priv(rq_sop->vdev);
527         rq_data = &enic->rq[rq_sop->data_queue_idx];
528
529         enic_rxmbuf_queue_release(enic, rq_sop);
530         if (rq_data->in_use)
531                 enic_rxmbuf_queue_release(enic, rq_data);
532
533         rte_free(rq_sop->mbuf_ring);
534         if (rq_data->in_use)
535                 rte_free(rq_data->mbuf_ring);
536
537         rq_sop->mbuf_ring = NULL;
538         rq_data->mbuf_ring = NULL;
539
540         vnic_rq_free(rq_sop);
541         if (rq_data->in_use)
542                 vnic_rq_free(rq_data);
543
544         vnic_cq_free(&enic->cq[rq_sop->index]);
545
546         rq_sop->in_use = 0;
547         rq_data->in_use = 0;
548 }
549
550 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
551 {
552         struct rte_eth_dev *eth_dev = enic->rte_dev;
553         vnic_wq_enable(&enic->wq[queue_idx]);
554         eth_dev->data->tx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STARTED;
555 }
556
557 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
558 {
559         struct rte_eth_dev *eth_dev = enic->rte_dev;
560         int ret;
561
562         ret = vnic_wq_disable(&enic->wq[queue_idx]);
563         if (ret)
564                 return ret;
565
566         eth_dev->data->tx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STOPPED;
567         return 0;
568 }
569
570 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
571 {
572         struct vnic_rq *rq_sop = &enic->rq[enic_sop_rq(queue_idx)];
573         struct vnic_rq *rq_data = &enic->rq[rq_sop->data_queue_idx];
574         struct rte_eth_dev *eth_dev = enic->rte_dev;
575
576         if (rq_data->in_use)
577                 vnic_rq_enable(rq_data);
578         rte_mb();
579         vnic_rq_enable(rq_sop);
580         eth_dev->data->rx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STARTED;
581 }
582
583 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
584 {
585         int ret1 = 0, ret2 = 0;
586         struct rte_eth_dev *eth_dev = enic->rte_dev;
587         struct vnic_rq *rq_sop = &enic->rq[enic_sop_rq(queue_idx)];
588         struct vnic_rq *rq_data = &enic->rq[rq_sop->data_queue_idx];
589
590         ret2 = vnic_rq_disable(rq_sop);
591         rte_mb();
592         if (rq_data->in_use)
593                 ret1 = vnic_rq_disable(rq_data);
594
595         if (ret2)
596                 return ret2;
597         else if (ret1)
598                 return ret1;
599
600         eth_dev->data->rx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STOPPED;
601         return 0;
602 }
603
604 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
605         unsigned int socket_id, struct rte_mempool *mp,
606         uint16_t nb_desc)
607 {
608         int rc;
609         uint16_t sop_queue_idx = enic_sop_rq(queue_idx);
610         uint16_t data_queue_idx = enic_data_rq(queue_idx);
611         struct vnic_rq *rq_sop = &enic->rq[sop_queue_idx];
612         struct vnic_rq *rq_data = &enic->rq[data_queue_idx];
613         unsigned int mbuf_size, mbufs_per_pkt;
614         unsigned int nb_sop_desc, nb_data_desc;
615         uint16_t min_sop, max_sop, min_data, max_data;
616         uint16_t mtu = enic->rte_dev->data->mtu;
617
618         rq_sop->is_sop = 1;
619         rq_sop->data_queue_idx = data_queue_idx;
620         rq_data->is_sop = 0;
621         rq_data->data_queue_idx = 0;
622         rq_sop->socket_id = socket_id;
623         rq_sop->mp = mp;
624         rq_data->socket_id = socket_id;
625         rq_data->mp = mp;
626         rq_sop->in_use = 1;
627
628         mbuf_size = (uint16_t)(rte_pktmbuf_data_room_size(mp) -
629                                RTE_PKTMBUF_HEADROOM);
630
631         if (enic->rte_dev->data->dev_conf.rxmode.enable_scatter) {
632                 dev_info(enic, "Rq %u Scatter rx mode enabled\n", queue_idx);
633                 /* ceil((mtu + ETHER_HDR_LEN + 4)/mbuf_size) */
634                 mbufs_per_pkt = ((mtu + ETHER_HDR_LEN + 4) +
635                                  (mbuf_size - 1)) / mbuf_size;
636         } else {
637                 dev_info(enic, "Scatter rx mode disabled\n");
638                 mbufs_per_pkt = 1;
639         }
640
641         if (mbufs_per_pkt > 1) {
642                 dev_info(enic, "Rq %u Scatter rx mode in use\n", queue_idx);
643                 rq_data->in_use = 1;
644         } else {
645                 dev_info(enic, "Rq %u Scatter rx mode not being used\n",
646                          queue_idx);
647                 rq_data->in_use = 0;
648         }
649
650         /* number of descriptors have to be a multiple of 32 */
651         nb_sop_desc = (nb_desc / mbufs_per_pkt) & ~0x1F;
652         nb_data_desc = (nb_desc - nb_sop_desc) & ~0x1F;
653
654         rq_sop->max_mbufs_per_pkt = mbufs_per_pkt;
655         rq_data->max_mbufs_per_pkt = mbufs_per_pkt;
656
657         if (mbufs_per_pkt > 1) {
658                 min_sop = 64;
659                 max_sop = ((enic->config.rq_desc_count /
660                             (mbufs_per_pkt - 1)) & ~0x1F);
661                 min_data = min_sop * (mbufs_per_pkt - 1);
662                 max_data = enic->config.rq_desc_count;
663         } else {
664                 min_sop = 64;
665                 max_sop = enic->config.rq_desc_count;
666                 min_data = 0;
667                 max_data = 0;
668         }
669
670         if (nb_desc < (min_sop + min_data)) {
671                 dev_warning(enic,
672                             "Number of rx descs too low, adjusting to minimum\n");
673                 nb_sop_desc = min_sop;
674                 nb_data_desc = min_data;
675         } else if (nb_desc > (max_sop + max_data)) {
676                 dev_warning(enic,
677                             "Number of rx_descs too high, adjusting to maximum\n");
678                 nb_sop_desc = max_sop;
679                 nb_data_desc = max_data;
680         }
681         if (mbufs_per_pkt > 1) {
682                 dev_info(enic, "For mtu %d and mbuf size %d valid rx descriptor range is %d to %d\n",
683                          mtu, mbuf_size, min_sop + min_data,
684                          max_sop + max_data);
685         }
686         dev_info(enic, "Using %d rx descriptors (sop %d, data %d)\n",
687                  nb_sop_desc + nb_data_desc, nb_sop_desc, nb_data_desc);
688
689         /* Allocate sop queue resources */
690         rc = vnic_rq_alloc(enic->vdev, rq_sop, sop_queue_idx,
691                 nb_sop_desc, sizeof(struct rq_enet_desc));
692         if (rc) {
693                 dev_err(enic, "error in allocation of sop rq\n");
694                 goto err_exit;
695         }
696         nb_sop_desc = rq_sop->ring.desc_count;
697
698         if (rq_data->in_use) {
699                 /* Allocate data queue resources */
700                 rc = vnic_rq_alloc(enic->vdev, rq_data, data_queue_idx,
701                                    nb_data_desc,
702                                    sizeof(struct rq_enet_desc));
703                 if (rc) {
704                         dev_err(enic, "error in allocation of data rq\n");
705                         goto err_free_rq_sop;
706                 }
707                 nb_data_desc = rq_data->ring.desc_count;
708         }
709         rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
710                            socket_id, nb_sop_desc + nb_data_desc,
711                            sizeof(struct cq_enet_rq_desc));
712         if (rc) {
713                 dev_err(enic, "error in allocation of cq for rq\n");
714                 goto err_free_rq_data;
715         }
716
717         /* Allocate the mbuf rings */
718         rq_sop->mbuf_ring = (struct rte_mbuf **)
719                 rte_zmalloc_socket("rq->mbuf_ring",
720                                    sizeof(struct rte_mbuf *) * nb_sop_desc,
721                                    RTE_CACHE_LINE_SIZE, rq_sop->socket_id);
722         if (rq_sop->mbuf_ring == NULL)
723                 goto err_free_cq;
724
725         if (rq_data->in_use) {
726                 rq_data->mbuf_ring = (struct rte_mbuf **)
727                         rte_zmalloc_socket("rq->mbuf_ring",
728                                 sizeof(struct rte_mbuf *) * nb_data_desc,
729                                 RTE_CACHE_LINE_SIZE, rq_sop->socket_id);
730                 if (rq_data->mbuf_ring == NULL)
731                         goto err_free_sop_mbuf;
732         }
733
734         rq_sop->tot_nb_desc = nb_desc; /* squirl away for MTU update function */
735
736         return 0;
737
738 err_free_sop_mbuf:
739         rte_free(rq_sop->mbuf_ring);
740 err_free_cq:
741         /* cleanup on error */
742         vnic_cq_free(&enic->cq[queue_idx]);
743 err_free_rq_data:
744         if (rq_data->in_use)
745                 vnic_rq_free(rq_data);
746 err_free_rq_sop:
747         vnic_rq_free(rq_sop);
748 err_exit:
749         return -ENOMEM;
750 }
751
752 void enic_free_wq(void *txq)
753 {
754         struct vnic_wq *wq;
755         struct enic *enic;
756
757         if (txq == NULL)
758                 return;
759
760         wq = (struct vnic_wq *)txq;
761         enic = vnic_dev_priv(wq->vdev);
762         rte_memzone_free(wq->cqmsg_rz);
763         vnic_wq_free(wq);
764         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
765 }
766
767 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
768         unsigned int socket_id, uint16_t nb_desc)
769 {
770         int err;
771         struct vnic_wq *wq = &enic->wq[queue_idx];
772         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
773         char name[NAME_MAX];
774         static int instance;
775
776         wq->socket_id = socket_id;
777         if (nb_desc) {
778                 if (nb_desc > enic->config.wq_desc_count) {
779                         dev_warning(enic,
780                                 "WQ %d - number of tx desc in cmd line (%d)"\
781                                 "is greater than that in the UCSM/CIMC adapter"\
782                                 "policy.  Applying the value in the adapter "\
783                                 "policy (%d)\n",
784                                 queue_idx, nb_desc, enic->config.wq_desc_count);
785                 } else if (nb_desc != enic->config.wq_desc_count) {
786                         enic->config.wq_desc_count = nb_desc;
787                         dev_info(enic,
788                                 "TX Queues - effective number of descs:%d\n",
789                                 nb_desc);
790                 }
791         }
792
793         /* Allocate queue resources */
794         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
795                 enic->config.wq_desc_count,
796                 sizeof(struct wq_enet_desc));
797         if (err) {
798                 dev_err(enic, "error in allocation of wq\n");
799                 return err;
800         }
801
802         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
803                 socket_id, enic->config.wq_desc_count,
804                 sizeof(struct cq_enet_wq_desc));
805         if (err) {
806                 vnic_wq_free(wq);
807                 dev_err(enic, "error in allocation of cq for wq\n");
808         }
809
810         /* setup up CQ message */
811         snprintf((char *)name, sizeof(name),
812                  "vnic_cqmsg-%s-%d-%d", enic->bdf_name, queue_idx,
813                 instance++);
814
815         wq->cqmsg_rz = rte_memzone_reserve_aligned((const char *)name,
816                                                    sizeof(uint32_t),
817                                                    SOCKET_ID_ANY, 0,
818                                                    ENIC_ALIGN);
819         if (!wq->cqmsg_rz)
820                 return -ENOMEM;
821
822         return err;
823 }
824
825 int enic_disable(struct enic *enic)
826 {
827         unsigned int i;
828         int err;
829
830         vnic_intr_mask(&enic->intr);
831         (void)vnic_intr_masked(&enic->intr); /* flush write */
832         rte_intr_disable(&enic->pdev->intr_handle);
833         rte_intr_callback_unregister(&enic->pdev->intr_handle,
834                                      enic_intr_handler,
835                                      (void *)enic->rte_dev);
836
837         vnic_dev_disable(enic->vdev);
838
839         enic_clsf_destroy(enic);
840
841         if (!enic_is_sriov_vf(enic))
842                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
843
844         for (i = 0; i < enic->wq_count; i++) {
845                 err = vnic_wq_disable(&enic->wq[i]);
846                 if (err)
847                         return err;
848         }
849         for (i = 0; i < enic_vnic_rq_count(enic); i++) {
850                 if (enic->rq[i].in_use) {
851                         err = vnic_rq_disable(&enic->rq[i]);
852                         if (err)
853                                 return err;
854                 }
855         }
856
857         /* If we were using interrupts, set the interrupt vector to -1
858          * to disable interrupts.  We are not disabling link notifcations,
859          * though, as we want the polling of link status to continue working.
860          */
861         if (enic->rte_dev->data->dev_conf.intr_conf.lsc)
862                 vnic_dev_notify_set(enic->vdev, -1);
863
864         vnic_dev_set_reset_flag(enic->vdev, 1);
865
866         for (i = 0; i < enic->wq_count; i++)
867                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
868
869         for (i = 0; i < enic_vnic_rq_count(enic); i++)
870                 if (enic->rq[i].in_use)
871                         vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
872         for (i = 0; i < enic->cq_count; i++)
873                 vnic_cq_clean(&enic->cq[i]);
874         vnic_intr_clean(&enic->intr);
875
876         return 0;
877 }
878
879 static int enic_dev_wait(struct vnic_dev *vdev,
880         int (*start)(struct vnic_dev *, int),
881         int (*finished)(struct vnic_dev *, int *),
882         int arg)
883 {
884         int done;
885         int err;
886         int i;
887
888         err = start(vdev, arg);
889         if (err)
890                 return err;
891
892         /* Wait for func to complete...2 seconds max */
893         for (i = 0; i < 2000; i++) {
894                 err = finished(vdev, &done);
895                 if (err)
896                         return err;
897                 if (done)
898                         return 0;
899                 usleep(1000);
900         }
901         return -ETIMEDOUT;
902 }
903
904 static int enic_dev_open(struct enic *enic)
905 {
906         int err;
907
908         err = enic_dev_wait(enic->vdev, vnic_dev_open,
909                 vnic_dev_open_done, 0);
910         if (err)
911                 dev_err(enic_get_dev(enic),
912                         "vNIC device open failed, err %d\n", err);
913
914         return err;
915 }
916
917 static int enic_set_rsskey(struct enic *enic)
918 {
919         dma_addr_t rss_key_buf_pa;
920         union vnic_rss_key *rss_key_buf_va = NULL;
921         static union vnic_rss_key rss_key = {
922                 .key = {
923                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
924                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
925                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
926                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
927                 }
928         };
929         int err;
930         u8 name[NAME_MAX];
931
932         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
933         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
934                 &rss_key_buf_pa, name);
935         if (!rss_key_buf_va)
936                 return -ENOMEM;
937
938         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
939
940         err = enic_set_rss_key(enic,
941                 rss_key_buf_pa,
942                 sizeof(union vnic_rss_key));
943
944         enic_free_consistent(enic, sizeof(union vnic_rss_key),
945                 rss_key_buf_va, rss_key_buf_pa);
946
947         return err;
948 }
949
950 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
951 {
952         dma_addr_t rss_cpu_buf_pa;
953         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
954         int i;
955         int err;
956         u8 name[NAME_MAX];
957
958         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
959         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
960                 &rss_cpu_buf_pa, name);
961         if (!rss_cpu_buf_va)
962                 return -ENOMEM;
963
964         for (i = 0; i < (1 << rss_hash_bits); i++)
965                 (*rss_cpu_buf_va).cpu[i / 4].b[i % 4] =
966                         enic_sop_rq(i % enic->rq_count);
967
968         err = enic_set_rss_cpu(enic,
969                 rss_cpu_buf_pa,
970                 sizeof(union vnic_rss_cpu));
971
972         enic_free_consistent(enic, sizeof(union vnic_rss_cpu),
973                 rss_cpu_buf_va, rss_cpu_buf_pa);
974
975         return err;
976 }
977
978 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
979         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
980 {
981         const u8 tso_ipid_split_en = 0;
982         int err;
983
984         /* Enable VLAN tag stripping */
985
986         err = enic_set_nic_cfg(enic,
987                 rss_default_cpu, rss_hash_type,
988                 rss_hash_bits, rss_base_cpu,
989                 rss_enable, tso_ipid_split_en,
990                 enic->ig_vlan_strip_en);
991
992         return err;
993 }
994
995 int enic_set_rss_nic_cfg(struct enic *enic)
996 {
997         const u8 rss_default_cpu = 0;
998         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
999             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
1000             NIC_CFG_RSS_HASH_TYPE_IPV6 |
1001             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
1002         const u8 rss_hash_bits = 7;
1003         const u8 rss_base_cpu = 0;
1004         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
1005
1006         if (rss_enable) {
1007                 if (!enic_set_rsskey(enic)) {
1008                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
1009                                 rss_enable = 0;
1010                                 dev_warning(enic, "RSS disabled, "\
1011                                         "Failed to set RSS cpu indirection table.");
1012                         }
1013                 } else {
1014                         rss_enable = 0;
1015                         dev_warning(enic,
1016                                 "RSS disabled, Failed to set RSS key.\n");
1017                 }
1018         }
1019
1020         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
1021                 rss_hash_bits, rss_base_cpu, rss_enable);
1022 }
1023
1024 int enic_setup_finish(struct enic *enic)
1025 {
1026         int ret;
1027
1028         enic_init_soft_stats(enic);
1029
1030         ret = enic_set_rss_nic_cfg(enic);
1031         if (ret) {
1032                 dev_err(enic, "Failed to config nic, aborting.\n");
1033                 return -1;
1034         }
1035
1036         /* Default conf */
1037         vnic_dev_packet_filter(enic->vdev,
1038                 1 /* directed  */,
1039                 1 /* multicast */,
1040                 1 /* broadcast */,
1041                 0 /* promisc   */,
1042                 1 /* allmulti  */);
1043
1044         enic->promisc = 0;
1045         enic->allmulti = 1;
1046
1047         return 0;
1048 }
1049
1050 void enic_add_packet_filter(struct enic *enic)
1051 {
1052         /* Args -> directed, multicast, broadcast, promisc, allmulti */
1053         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
1054                 enic->promisc, enic->allmulti);
1055 }
1056
1057 int enic_get_link_status(struct enic *enic)
1058 {
1059         return vnic_dev_link_status(enic->vdev);
1060 }
1061
1062 static void enic_dev_deinit(struct enic *enic)
1063 {
1064         struct rte_eth_dev *eth_dev = enic->rte_dev;
1065
1066         /* stop link status checking */
1067         vnic_dev_notify_unset(enic->vdev);
1068
1069         rte_free(eth_dev->data->mac_addrs);
1070 }
1071
1072
1073 int enic_set_vnic_res(struct enic *enic)
1074 {
1075         struct rte_eth_dev *eth_dev = enic->rte_dev;
1076         int rc = 0;
1077
1078         /* With Rx scatter support, two RQs are now used per RQ used by
1079          * the application.
1080          */
1081         if (enic->conf_rq_count < eth_dev->data->nb_rx_queues) {
1082                 dev_err(dev, "Not enough Receive queues. Requested:%u which uses %d RQs on VIC, Configured:%u\n",
1083                         eth_dev->data->nb_rx_queues,
1084                         eth_dev->data->nb_rx_queues * 2, enic->conf_rq_count);
1085                 rc = -EINVAL;
1086         }
1087         if (enic->conf_wq_count < eth_dev->data->nb_tx_queues) {
1088                 dev_err(dev, "Not enough Transmit queues. Requested:%u, Configured:%u\n",
1089                         eth_dev->data->nb_tx_queues, enic->conf_wq_count);
1090                 rc = -EINVAL;
1091         }
1092
1093         if (enic->conf_cq_count < (eth_dev->data->nb_rx_queues +
1094                                    eth_dev->data->nb_tx_queues)) {
1095                 dev_err(dev, "Not enough Completion queues. Required:%u, Configured:%u\n",
1096                         (eth_dev->data->nb_rx_queues +
1097                          eth_dev->data->nb_tx_queues), enic->conf_cq_count);
1098                 rc = -EINVAL;
1099         }
1100
1101         if (rc == 0) {
1102                 enic->rq_count = eth_dev->data->nb_rx_queues;
1103                 enic->wq_count = eth_dev->data->nb_tx_queues;
1104                 enic->cq_count = enic->rq_count + enic->wq_count;
1105         }
1106
1107         return rc;
1108 }
1109
1110 /* Initialize the completion queue for an RQ */
1111 static int
1112 enic_reinit_rq(struct enic *enic, unsigned int rq_idx)
1113 {
1114         struct vnic_rq *sop_rq, *data_rq;
1115         unsigned int cq_idx = enic_cq_rq(enic, rq_idx);
1116         int rc = 0;
1117
1118         sop_rq = &enic->rq[enic_sop_rq(rq_idx)];
1119         data_rq = &enic->rq[enic_data_rq(rq_idx)];
1120
1121         vnic_cq_clean(&enic->cq[cq_idx]);
1122         vnic_cq_init(&enic->cq[cq_idx],
1123                      0 /* flow_control_enable */,
1124                      1 /* color_enable */,
1125                      0 /* cq_head */,
1126                      0 /* cq_tail */,
1127                      1 /* cq_tail_color */,
1128                      0 /* interrupt_enable */,
1129                      1 /* cq_entry_enable */,
1130                      0 /* cq_message_enable */,
1131                      0 /* interrupt offset */,
1132                      0 /* cq_message_addr */);
1133
1134
1135         vnic_rq_init_start(sop_rq, enic_cq_rq(enic, enic_sop_rq(rq_idx)),
1136                            0, sop_rq->ring.desc_count - 1, 1, 0);
1137         if (data_rq->in_use) {
1138                 vnic_rq_init_start(data_rq,
1139                                    enic_cq_rq(enic, enic_data_rq(rq_idx)),
1140                                    0, data_rq->ring.desc_count - 1, 1, 0);
1141         }
1142
1143         rc = enic_alloc_rx_queue_mbufs(enic, sop_rq);
1144         if (rc)
1145                 return rc;
1146
1147         if (data_rq->in_use) {
1148                 rc = enic_alloc_rx_queue_mbufs(enic, data_rq);
1149                 if (rc) {
1150                         enic_rxmbuf_queue_release(enic, sop_rq);
1151                         return rc;
1152                 }
1153         }
1154
1155         return 0;
1156 }
1157
1158 /* The Cisco NIC can send and receive packets up to a max packet size
1159  * determined by the NIC type and firmware. There is also an MTU
1160  * configured into the NIC via the CIMC/UCSM management interface
1161  * which can be overridden by this function (up to the max packet size).
1162  * Depending on the network setup, doing so may cause packet drops
1163  * and unexpected behavior.
1164  */
1165 int enic_set_mtu(struct enic *enic, uint16_t new_mtu)
1166 {
1167         unsigned int rq_idx;
1168         struct vnic_rq *rq;
1169         int rc = 0;
1170         uint16_t old_mtu;       /* previous setting */
1171         uint16_t config_mtu;    /* Value configured into NIC via CIMC/UCSM */
1172         struct rte_eth_dev *eth_dev = enic->rte_dev;
1173
1174         old_mtu = eth_dev->data->mtu;
1175         config_mtu = enic->config.mtu;
1176
1177         if (new_mtu > enic->max_mtu) {
1178                 dev_err(enic,
1179                         "MTU not updated: requested (%u) greater than max (%u)\n",
1180                         new_mtu, enic->max_mtu);
1181                 return -EINVAL;
1182         }
1183         if (new_mtu < ENIC_MIN_MTU) {
1184                 dev_info(enic,
1185                         "MTU not updated: requested (%u) less than min (%u)\n",
1186                         new_mtu, ENIC_MIN_MTU);
1187                 return -EINVAL;
1188         }
1189         if (new_mtu > config_mtu)
1190                 dev_warning(enic,
1191                         "MTU (%u) is greater than value configured in NIC (%u)\n",
1192                         new_mtu, config_mtu);
1193
1194         /* The easy case is when scatter is disabled. However if the MTU
1195          * becomes greater than the mbuf data size, packet drops will ensue.
1196          */
1197         if (!enic->rte_dev->data->dev_conf.rxmode.enable_scatter) {
1198                 eth_dev->data->mtu = new_mtu;
1199                 goto set_mtu_done;
1200         }
1201
1202         /* Rx scatter is enabled so reconfigure RQ's on the fly. The point is to
1203          * change Rx scatter mode if necessary for better performance. I.e. if
1204          * MTU was greater than the mbuf size and now it's less, scatter Rx
1205          * doesn't have to be used and vice versa.
1206           */
1207         rte_spinlock_lock(&enic->mtu_lock);
1208
1209         /* Stop traffic on all RQs */
1210         for (rq_idx = 0; rq_idx < enic->rq_count * 2; rq_idx++) {
1211                 rq = &enic->rq[rq_idx];
1212                 if (rq->is_sop && rq->in_use) {
1213                         rc = enic_stop_rq(enic, enic_rq_sop(rq_idx));
1214                         if (rc) {
1215                                 dev_err(enic, "Failed to stop Rq %u\n", rq_idx);
1216                                 goto set_mtu_done;
1217                         }
1218                 }
1219         }
1220
1221         /* replace Rx funciton with a no-op to avoid getting stale pkts */
1222         eth_dev->rx_pkt_burst = enic_dummy_recv_pkts;
1223         rte_mb();
1224
1225         /* Allow time for threads to exit the real Rx function. */
1226         usleep(100000);
1227
1228         /* now it is safe to reconfigure the RQs */
1229
1230         /* update the mtu */
1231         eth_dev->data->mtu = new_mtu;
1232
1233         /* free and reallocate RQs with the new MTU */
1234         for (rq_idx = 0; rq_idx < enic->rq_count; rq_idx++) {
1235                 rq = &enic->rq[enic_sop_rq(rq_idx)];
1236
1237                 enic_free_rq(rq);
1238                 rc = enic_alloc_rq(enic, rq_idx, rq->socket_id, rq->mp,
1239                                    rq->tot_nb_desc);
1240                 if (rc) {
1241                         dev_err(enic,
1242                                 "Fatal MTU alloc error- No traffic will pass\n");
1243                         goto set_mtu_done;
1244                 }
1245
1246                 rc = enic_reinit_rq(enic, rq_idx);
1247                 if (rc) {
1248                         dev_err(enic,
1249                                 "Fatal MTU RQ reinit- No traffic will pass\n");
1250                         goto set_mtu_done;
1251                 }
1252         }
1253
1254         /* put back the real receive function */
1255         rte_mb();
1256         eth_dev->rx_pkt_burst = enic_recv_pkts;
1257         rte_mb();
1258
1259         /* restart Rx traffic */
1260         for (rq_idx = 0; rq_idx < enic->rq_count; rq_idx++) {
1261                 rq = &enic->rq[enic_sop_rq(rq_idx)];
1262                 if (rq->is_sop && rq->in_use)
1263                         enic_start_rq(enic, rq_idx);
1264         }
1265
1266 set_mtu_done:
1267         dev_info(enic, "MTU changed from %u to %u\n",  old_mtu, new_mtu);
1268         rte_spinlock_unlock(&enic->mtu_lock);
1269         return rc;
1270 }
1271
1272 static int enic_dev_init(struct enic *enic)
1273 {
1274         int err;
1275         struct rte_eth_dev *eth_dev = enic->rte_dev;
1276
1277         vnic_dev_intr_coal_timer_info_default(enic->vdev);
1278
1279         /* Get vNIC configuration
1280         */
1281         err = enic_get_vnic_config(enic);
1282         if (err) {
1283                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
1284                 return err;
1285         }
1286
1287         /* Get available resource counts */
1288         enic_get_res_counts(enic);
1289         if (enic->conf_rq_count == 1) {
1290                 dev_err(enic, "Running with only 1 RQ configured in the vNIC is not supported.\n");
1291                 dev_err(enic, "Please configure 2 RQs in the vNIC for each Rx queue used by DPDK.\n");
1292                 dev_err(enic, "See the ENIC PMD guide for more information.\n");
1293                 return -EINVAL;
1294         }
1295
1296         /* Get the supported filters */
1297         enic_fdir_info(enic);
1298
1299         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
1300         if (!eth_dev->data->mac_addrs) {
1301                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
1302                 return -1;
1303         }
1304         ether_addr_copy((struct ether_addr *) enic->mac_addr,
1305                 &eth_dev->data->mac_addrs[0]);
1306
1307         vnic_dev_set_reset_flag(enic->vdev, 0);
1308
1309         /* set up link status checking */
1310         vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */
1311
1312         return 0;
1313
1314 }
1315
1316 int enic_probe(struct enic *enic)
1317 {
1318         struct rte_pci_device *pdev = enic->pdev;
1319         int err = -1;
1320
1321         dev_debug(enic, " Initializing ENIC PMD\n");
1322
1323         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
1324         enic->bar0.len = pdev->mem_resource[0].len;
1325
1326         /* Register vNIC device */
1327         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
1328         if (!enic->vdev) {
1329                 dev_err(enic, "vNIC registration failed, aborting\n");
1330                 goto err_out;
1331         }
1332
1333         LIST_INIT(&enic->memzone_list);
1334         rte_spinlock_init(&enic->memzone_list_lock);
1335
1336         vnic_register_cbacks(enic->vdev,
1337                 enic_alloc_consistent,
1338                 enic_free_consistent);
1339
1340         /* Issue device open to get device in known state */
1341         err = enic_dev_open(enic);
1342         if (err) {
1343                 dev_err(enic, "vNIC dev open failed, aborting\n");
1344                 goto err_out_unregister;
1345         }
1346
1347         /* Set ingress vlan rewrite mode before vnic initialization */
1348         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
1349                 IG_VLAN_REWRITE_MODE_PASS_THRU);
1350         if (err) {
1351                 dev_err(enic,
1352                         "Failed to set ingress vlan rewrite mode, aborting.\n");
1353                 goto err_out_dev_close;
1354         }
1355
1356         /* Issue device init to initialize the vnic-to-switch link.
1357          * We'll start with carrier off and wait for link UP
1358          * notification later to turn on carrier.  We don't need
1359          * to wait here for the vnic-to-switch link initialization
1360          * to complete; link UP notification is the indication that
1361          * the process is complete.
1362          */
1363
1364         err = vnic_dev_init(enic->vdev, 0);
1365         if (err) {
1366                 dev_err(enic, "vNIC dev init failed, aborting\n");
1367                 goto err_out_dev_close;
1368         }
1369
1370         err = enic_dev_init(enic);
1371         if (err) {
1372                 dev_err(enic, "Device initialization failed, aborting\n");
1373                 goto err_out_dev_close;
1374         }
1375
1376         return 0;
1377
1378 err_out_dev_close:
1379         vnic_dev_close(enic->vdev);
1380 err_out_unregister:
1381         vnic_dev_unregister(enic->vdev);
1382 err_out:
1383         return err;
1384 }
1385
1386 void enic_remove(struct enic *enic)
1387 {
1388         enic_dev_deinit(enic);
1389         vnic_dev_close(enic->vdev);
1390         vnic_dev_unregister(enic->vdev);
1391 }