2 * Copyright 2015 Amazon.com, Inc. or its affiliates.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
35 #ifdef CONFIG_RFS_ACCEL
36 #include <linux/cpu_rmap.h>
37 #endif /* CONFIG_RFS_ACCEL */
38 #include <linux/ethtool.h>
39 #include <linux/if_vlan.h>
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/moduleparam.h>
43 #include <linux/numa.h>
44 #include <linux/pci.h>
45 #include <linux/utsname.h>
46 #include <linux/version.h>
47 #include <linux/vmalloc.h>
50 #include "ena_netdev.h"
51 #include "ena_pci_id_tbl.h"
53 static char version
[] = DEVICE_NAME
" v" DRV_MODULE_VERSION
"\n";
55 MODULE_AUTHOR("Amazon.com, Inc. or its affiliates");
56 MODULE_DESCRIPTION(DEVICE_NAME
);
57 MODULE_LICENSE("GPL");
58 MODULE_VERSION(DRV_MODULE_VERSION
);
60 /* Time in jiffies before concluding the transmitter is hung. */
61 #define TX_TIMEOUT (5 * HZ)
63 #define ENA_NAPI_BUDGET 64
65 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | \
66 NETIF_MSG_TX_DONE | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
67 static int debug
= -1;
68 module_param(debug
, int, 0);
69 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
71 static struct ena_aenq_handlers aenq_handlers
;
73 static struct workqueue_struct
*ena_wq
;
75 MODULE_DEVICE_TABLE(pci
, ena_pci_tbl
);
77 static int ena_rss_init_default(struct ena_adapter
*adapter
);
79 static void ena_tx_timeout(struct net_device
*dev
)
81 struct ena_adapter
*adapter
= netdev_priv(dev
);
83 /* Change the state of the device to trigger reset
84 * Check that we are not in the middle or a trigger already
87 if (test_and_set_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
))
90 adapter
->reset_reason
= ENA_REGS_RESET_OS_NETDEV_WD
;
91 u64_stats_update_begin(&adapter
->syncp
);
92 adapter
->dev_stats
.tx_timeout
++;
93 u64_stats_update_end(&adapter
->syncp
);
95 netif_err(adapter
, tx_err
, dev
, "Transmit time out\n");
98 static void update_rx_ring_mtu(struct ena_adapter
*adapter
, int mtu
)
102 for (i
= 0; i
< adapter
->num_queues
; i
++)
103 adapter
->rx_ring
[i
].mtu
= mtu
;
106 static int ena_change_mtu(struct net_device
*dev
, int new_mtu
)
108 struct ena_adapter
*adapter
= netdev_priv(dev
);
111 ret
= ena_com_set_dev_mtu(adapter
->ena_dev
, new_mtu
);
113 netif_dbg(adapter
, drv
, dev
, "set MTU to %d\n", new_mtu
);
114 update_rx_ring_mtu(adapter
, new_mtu
);
117 netif_err(adapter
, drv
, dev
, "Failed to set MTU to %d\n",
124 static int ena_init_rx_cpu_rmap(struct ena_adapter
*adapter
)
126 #ifdef CONFIG_RFS_ACCEL
130 adapter
->netdev
->rx_cpu_rmap
= alloc_irq_cpu_rmap(adapter
->num_queues
);
131 if (!adapter
->netdev
->rx_cpu_rmap
)
133 for (i
= 0; i
< adapter
->num_queues
; i
++) {
134 int irq_idx
= ENA_IO_IRQ_IDX(i
);
136 rc
= irq_cpu_rmap_add(adapter
->netdev
->rx_cpu_rmap
,
137 pci_irq_vector(adapter
->pdev
, irq_idx
));
139 free_irq_cpu_rmap(adapter
->netdev
->rx_cpu_rmap
);
140 adapter
->netdev
->rx_cpu_rmap
= NULL
;
144 #endif /* CONFIG_RFS_ACCEL */
148 static void ena_init_io_rings_common(struct ena_adapter
*adapter
,
149 struct ena_ring
*ring
, u16 qid
)
152 ring
->pdev
= adapter
->pdev
;
153 ring
->dev
= &adapter
->pdev
->dev
;
154 ring
->netdev
= adapter
->netdev
;
155 ring
->napi
= &adapter
->ena_napi
[qid
].napi
;
156 ring
->adapter
= adapter
;
157 ring
->ena_dev
= adapter
->ena_dev
;
158 ring
->per_napi_packets
= 0;
159 ring
->per_napi_bytes
= 0;
161 u64_stats_init(&ring
->syncp
);
164 static void ena_init_io_rings(struct ena_adapter
*adapter
)
166 struct ena_com_dev
*ena_dev
;
167 struct ena_ring
*txr
, *rxr
;
170 ena_dev
= adapter
->ena_dev
;
172 for (i
= 0; i
< adapter
->num_queues
; i
++) {
173 txr
= &adapter
->tx_ring
[i
];
174 rxr
= &adapter
->rx_ring
[i
];
176 /* TX/RX common ring state */
177 ena_init_io_rings_common(adapter
, txr
, i
);
178 ena_init_io_rings_common(adapter
, rxr
, i
);
180 /* TX specific ring state */
181 txr
->ring_size
= adapter
->tx_ring_size
;
182 txr
->tx_max_header_size
= ena_dev
->tx_max_header_size
;
183 txr
->tx_mem_queue_type
= ena_dev
->tx_mem_queue_type
;
184 txr
->sgl_size
= adapter
->max_tx_sgl_size
;
185 txr
->smoothed_interval
=
186 ena_com_get_nonadaptive_moderation_interval_tx(ena_dev
);
188 /* RX specific ring state */
189 rxr
->ring_size
= adapter
->rx_ring_size
;
190 rxr
->rx_copybreak
= adapter
->rx_copybreak
;
191 rxr
->sgl_size
= adapter
->max_rx_sgl_size
;
192 rxr
->smoothed_interval
=
193 ena_com_get_nonadaptive_moderation_interval_rx(ena_dev
);
194 rxr
->empty_rx_queue
= 0;
198 /* ena_setup_tx_resources - allocate I/O Tx resources (Descriptors)
199 * @adapter: network interface device structure
202 * Return 0 on success, negative on failure
204 static int ena_setup_tx_resources(struct ena_adapter
*adapter
, int qid
)
206 struct ena_ring
*tx_ring
= &adapter
->tx_ring
[qid
];
207 struct ena_irq
*ena_irq
= &adapter
->irq_tbl
[ENA_IO_IRQ_IDX(qid
)];
210 if (tx_ring
->tx_buffer_info
) {
211 netif_err(adapter
, ifup
,
212 adapter
->netdev
, "tx_buffer_info info is not NULL");
216 size
= sizeof(struct ena_tx_buffer
) * tx_ring
->ring_size
;
217 node
= cpu_to_node(ena_irq
->cpu
);
219 tx_ring
->tx_buffer_info
= vzalloc_node(size
, node
);
220 if (!tx_ring
->tx_buffer_info
) {
221 tx_ring
->tx_buffer_info
= vzalloc(size
);
222 if (!tx_ring
->tx_buffer_info
)
226 size
= sizeof(u16
) * tx_ring
->ring_size
;
227 tx_ring
->free_tx_ids
= vzalloc_node(size
, node
);
228 if (!tx_ring
->free_tx_ids
) {
229 tx_ring
->free_tx_ids
= vzalloc(size
);
230 if (!tx_ring
->free_tx_ids
) {
231 vfree(tx_ring
->tx_buffer_info
);
236 /* Req id ring for TX out of order completions */
237 for (i
= 0; i
< tx_ring
->ring_size
; i
++)
238 tx_ring
->free_tx_ids
[i
] = i
;
240 /* Reset tx statistics */
241 memset(&tx_ring
->tx_stats
, 0x0, sizeof(tx_ring
->tx_stats
));
243 tx_ring
->next_to_use
= 0;
244 tx_ring
->next_to_clean
= 0;
245 tx_ring
->cpu
= ena_irq
->cpu
;
249 /* ena_free_tx_resources - Free I/O Tx Resources per Queue
250 * @adapter: network interface device structure
253 * Free all transmit software resources
255 static void ena_free_tx_resources(struct ena_adapter
*adapter
, int qid
)
257 struct ena_ring
*tx_ring
= &adapter
->tx_ring
[qid
];
259 vfree(tx_ring
->tx_buffer_info
);
260 tx_ring
->tx_buffer_info
= NULL
;
262 vfree(tx_ring
->free_tx_ids
);
263 tx_ring
->free_tx_ids
= NULL
;
266 /* ena_setup_all_tx_resources - allocate I/O Tx queues resources for All queues
267 * @adapter: private structure
269 * Return 0 on success, negative on failure
271 static int ena_setup_all_tx_resources(struct ena_adapter
*adapter
)
275 for (i
= 0; i
< adapter
->num_queues
; i
++) {
276 rc
= ena_setup_tx_resources(adapter
, i
);
285 netif_err(adapter
, ifup
, adapter
->netdev
,
286 "Tx queue %d: allocation failed\n", i
);
288 /* rewind the index freeing the rings as we go */
290 ena_free_tx_resources(adapter
, i
);
294 /* ena_free_all_io_tx_resources - Free I/O Tx Resources for All Queues
295 * @adapter: board private structure
297 * Free all transmit software resources
299 static void ena_free_all_io_tx_resources(struct ena_adapter
*adapter
)
303 for (i
= 0; i
< adapter
->num_queues
; i
++)
304 ena_free_tx_resources(adapter
, i
);
307 static inline int validate_rx_req_id(struct ena_ring
*rx_ring
, u16 req_id
)
309 if (likely(req_id
< rx_ring
->ring_size
))
312 netif_err(rx_ring
->adapter
, rx_err
, rx_ring
->netdev
,
313 "Invalid rx req_id: %hu\n", req_id
);
315 u64_stats_update_begin(&rx_ring
->syncp
);
316 rx_ring
->rx_stats
.bad_req_id
++;
317 u64_stats_update_end(&rx_ring
->syncp
);
319 /* Trigger device reset */
320 rx_ring
->adapter
->reset_reason
= ENA_REGS_RESET_INV_RX_REQ_ID
;
321 set_bit(ENA_FLAG_TRIGGER_RESET
, &rx_ring
->adapter
->flags
);
325 /* ena_setup_rx_resources - allocate I/O Rx resources (Descriptors)
326 * @adapter: network interface device structure
329 * Returns 0 on success, negative on failure
331 static int ena_setup_rx_resources(struct ena_adapter
*adapter
,
334 struct ena_ring
*rx_ring
= &adapter
->rx_ring
[qid
];
335 struct ena_irq
*ena_irq
= &adapter
->irq_tbl
[ENA_IO_IRQ_IDX(qid
)];
338 if (rx_ring
->rx_buffer_info
) {
339 netif_err(adapter
, ifup
, adapter
->netdev
,
340 "rx_buffer_info is not NULL");
344 /* alloc extra element so in rx path
345 * we can always prefetch rx_info + 1
347 size
= sizeof(struct ena_rx_buffer
) * (rx_ring
->ring_size
+ 1);
348 node
= cpu_to_node(ena_irq
->cpu
);
350 rx_ring
->rx_buffer_info
= vzalloc_node(size
, node
);
351 if (!rx_ring
->rx_buffer_info
) {
352 rx_ring
->rx_buffer_info
= vzalloc(size
);
353 if (!rx_ring
->rx_buffer_info
)
357 size
= sizeof(u16
) * rx_ring
->ring_size
;
358 rx_ring
->free_rx_ids
= vzalloc_node(size
, node
);
359 if (!rx_ring
->free_rx_ids
) {
360 rx_ring
->free_rx_ids
= vzalloc(size
);
361 if (!rx_ring
->free_rx_ids
) {
362 vfree(rx_ring
->rx_buffer_info
);
367 /* Req id ring for receiving RX pkts out of order */
368 for (i
= 0; i
< rx_ring
->ring_size
; i
++)
369 rx_ring
->free_rx_ids
[i
] = i
;
371 /* Reset rx statistics */
372 memset(&rx_ring
->rx_stats
, 0x0, sizeof(rx_ring
->rx_stats
));
374 rx_ring
->next_to_clean
= 0;
375 rx_ring
->next_to_use
= 0;
376 rx_ring
->cpu
= ena_irq
->cpu
;
381 /* ena_free_rx_resources - Free I/O Rx Resources
382 * @adapter: network interface device structure
385 * Free all receive software resources
387 static void ena_free_rx_resources(struct ena_adapter
*adapter
,
390 struct ena_ring
*rx_ring
= &adapter
->rx_ring
[qid
];
392 vfree(rx_ring
->rx_buffer_info
);
393 rx_ring
->rx_buffer_info
= NULL
;
395 vfree(rx_ring
->free_rx_ids
);
396 rx_ring
->free_rx_ids
= NULL
;
399 /* ena_setup_all_rx_resources - allocate I/O Rx queues resources for all queues
400 * @adapter: board private structure
402 * Return 0 on success, negative on failure
404 static int ena_setup_all_rx_resources(struct ena_adapter
*adapter
)
408 for (i
= 0; i
< adapter
->num_queues
; i
++) {
409 rc
= ena_setup_rx_resources(adapter
, i
);
418 netif_err(adapter
, ifup
, adapter
->netdev
,
419 "Rx queue %d: allocation failed\n", i
);
421 /* rewind the index freeing the rings as we go */
423 ena_free_rx_resources(adapter
, i
);
427 /* ena_free_all_io_rx_resources - Free I/O Rx Resources for All Queues
428 * @adapter: board private structure
430 * Free all receive software resources
432 static void ena_free_all_io_rx_resources(struct ena_adapter
*adapter
)
436 for (i
= 0; i
< adapter
->num_queues
; i
++)
437 ena_free_rx_resources(adapter
, i
);
440 static inline int ena_alloc_rx_page(struct ena_ring
*rx_ring
,
441 struct ena_rx_buffer
*rx_info
, gfp_t gfp
)
443 struct ena_com_buf
*ena_buf
;
447 /* if previous allocated page is not used */
448 if (unlikely(rx_info
->page
))
451 page
= alloc_page(gfp
);
452 if (unlikely(!page
)) {
453 u64_stats_update_begin(&rx_ring
->syncp
);
454 rx_ring
->rx_stats
.page_alloc_fail
++;
455 u64_stats_update_end(&rx_ring
->syncp
);
459 dma
= dma_map_page(rx_ring
->dev
, page
, 0, PAGE_SIZE
,
461 if (unlikely(dma_mapping_error(rx_ring
->dev
, dma
))) {
462 u64_stats_update_begin(&rx_ring
->syncp
);
463 rx_ring
->rx_stats
.dma_mapping_err
++;
464 u64_stats_update_end(&rx_ring
->syncp
);
469 netif_dbg(rx_ring
->adapter
, rx_status
, rx_ring
->netdev
,
470 "alloc page %p, rx_info %p\n", page
, rx_info
);
472 rx_info
->page
= page
;
473 rx_info
->page_offset
= 0;
474 ena_buf
= &rx_info
->ena_buf
;
475 ena_buf
->paddr
= dma
;
476 ena_buf
->len
= PAGE_SIZE
;
481 static void ena_free_rx_page(struct ena_ring
*rx_ring
,
482 struct ena_rx_buffer
*rx_info
)
484 struct page
*page
= rx_info
->page
;
485 struct ena_com_buf
*ena_buf
= &rx_info
->ena_buf
;
487 if (unlikely(!page
)) {
488 netif_warn(rx_ring
->adapter
, rx_err
, rx_ring
->netdev
,
489 "Trying to free unallocated buffer\n");
493 dma_unmap_page(rx_ring
->dev
, ena_buf
->paddr
, PAGE_SIZE
,
497 rx_info
->page
= NULL
;
500 static int ena_refill_rx_bufs(struct ena_ring
*rx_ring
, u32 num
)
502 u16 next_to_use
, req_id
;
506 next_to_use
= rx_ring
->next_to_use
;
508 for (i
= 0; i
< num
; i
++) {
509 struct ena_rx_buffer
*rx_info
;
511 req_id
= rx_ring
->free_rx_ids
[next_to_use
];
512 rc
= validate_rx_req_id(rx_ring
, req_id
);
513 if (unlikely(rc
< 0))
516 rx_info
= &rx_ring
->rx_buffer_info
[req_id
];
519 rc
= ena_alloc_rx_page(rx_ring
, rx_info
,
520 __GFP_COLD
| GFP_ATOMIC
| __GFP_COMP
);
521 if (unlikely(rc
< 0)) {
522 netif_warn(rx_ring
->adapter
, rx_err
, rx_ring
->netdev
,
523 "failed to alloc buffer for rx queue %d\n",
527 rc
= ena_com_add_single_rx_desc(rx_ring
->ena_com_io_sq
,
531 netif_warn(rx_ring
->adapter
, rx_status
, rx_ring
->netdev
,
532 "failed to add buffer for rx queue %d\n",
536 next_to_use
= ENA_RX_RING_IDX_NEXT(next_to_use
,
540 if (unlikely(i
< num
)) {
541 u64_stats_update_begin(&rx_ring
->syncp
);
542 rx_ring
->rx_stats
.refil_partial
++;
543 u64_stats_update_end(&rx_ring
->syncp
);
544 netdev_warn(rx_ring
->netdev
,
545 "refilled rx qid %d with only %d buffers (from %d)\n",
546 rx_ring
->qid
, i
, num
);
550 /* Add memory barrier to make sure the desc were written before
554 ena_com_write_sq_doorbell(rx_ring
->ena_com_io_sq
);
557 rx_ring
->next_to_use
= next_to_use
;
562 static void ena_free_rx_bufs(struct ena_adapter
*adapter
,
565 struct ena_ring
*rx_ring
= &adapter
->rx_ring
[qid
];
568 for (i
= 0; i
< rx_ring
->ring_size
; i
++) {
569 struct ena_rx_buffer
*rx_info
= &rx_ring
->rx_buffer_info
[i
];
572 ena_free_rx_page(rx_ring
, rx_info
);
576 /* ena_refill_all_rx_bufs - allocate all queues Rx buffers
577 * @adapter: board private structure
580 static void ena_refill_all_rx_bufs(struct ena_adapter
*adapter
)
582 struct ena_ring
*rx_ring
;
585 for (i
= 0; i
< adapter
->num_queues
; i
++) {
586 rx_ring
= &adapter
->rx_ring
[i
];
587 bufs_num
= rx_ring
->ring_size
- 1;
588 rc
= ena_refill_rx_bufs(rx_ring
, bufs_num
);
590 if (unlikely(rc
!= bufs_num
))
591 netif_warn(rx_ring
->adapter
, rx_status
, rx_ring
->netdev
,
592 "refilling Queue %d failed. allocated %d buffers from: %d\n",
597 static void ena_free_all_rx_bufs(struct ena_adapter
*adapter
)
601 for (i
= 0; i
< adapter
->num_queues
; i
++)
602 ena_free_rx_bufs(adapter
, i
);
605 /* ena_free_tx_bufs - Free Tx Buffers per Queue
606 * @tx_ring: TX ring for which buffers be freed
608 static void ena_free_tx_bufs(struct ena_ring
*tx_ring
)
610 bool print_once
= true;
613 for (i
= 0; i
< tx_ring
->ring_size
; i
++) {
614 struct ena_tx_buffer
*tx_info
= &tx_ring
->tx_buffer_info
[i
];
615 struct ena_com_buf
*ena_buf
;
623 netdev_notice(tx_ring
->netdev
,
624 "free uncompleted tx skb qid %d idx 0x%x\n",
628 netdev_dbg(tx_ring
->netdev
,
629 "free uncompleted tx skb qid %d idx 0x%x\n",
633 ena_buf
= tx_info
->bufs
;
634 dma_unmap_single(tx_ring
->dev
,
639 /* unmap remaining mapped pages */
640 nr_frags
= tx_info
->num_of_bufs
- 1;
641 for (j
= 0; j
< nr_frags
; j
++) {
643 dma_unmap_page(tx_ring
->dev
,
649 dev_kfree_skb_any(tx_info
->skb
);
651 netdev_tx_reset_queue(netdev_get_tx_queue(tx_ring
->netdev
,
655 static void ena_free_all_tx_bufs(struct ena_adapter
*adapter
)
657 struct ena_ring
*tx_ring
;
660 for (i
= 0; i
< adapter
->num_queues
; i
++) {
661 tx_ring
= &adapter
->tx_ring
[i
];
662 ena_free_tx_bufs(tx_ring
);
666 static void ena_destroy_all_tx_queues(struct ena_adapter
*adapter
)
671 for (i
= 0; i
< adapter
->num_queues
; i
++) {
672 ena_qid
= ENA_IO_TXQ_IDX(i
);
673 ena_com_destroy_io_queue(adapter
->ena_dev
, ena_qid
);
677 static void ena_destroy_all_rx_queues(struct ena_adapter
*adapter
)
682 for (i
= 0; i
< adapter
->num_queues
; i
++) {
683 ena_qid
= ENA_IO_RXQ_IDX(i
);
684 ena_com_destroy_io_queue(adapter
->ena_dev
, ena_qid
);
688 static void ena_destroy_all_io_queues(struct ena_adapter
*adapter
)
690 ena_destroy_all_tx_queues(adapter
);
691 ena_destroy_all_rx_queues(adapter
);
694 static int validate_tx_req_id(struct ena_ring
*tx_ring
, u16 req_id
)
696 struct ena_tx_buffer
*tx_info
= NULL
;
698 if (likely(req_id
< tx_ring
->ring_size
)) {
699 tx_info
= &tx_ring
->tx_buffer_info
[req_id
];
700 if (likely(tx_info
->skb
))
705 netif_err(tx_ring
->adapter
, tx_done
, tx_ring
->netdev
,
706 "tx_info doesn't have valid skb\n");
708 netif_err(tx_ring
->adapter
, tx_done
, tx_ring
->netdev
,
709 "Invalid req_id: %hu\n", req_id
);
711 u64_stats_update_begin(&tx_ring
->syncp
);
712 tx_ring
->tx_stats
.bad_req_id
++;
713 u64_stats_update_end(&tx_ring
->syncp
);
715 /* Trigger device reset */
716 tx_ring
->adapter
->reset_reason
= ENA_REGS_RESET_INV_TX_REQ_ID
;
717 set_bit(ENA_FLAG_TRIGGER_RESET
, &tx_ring
->adapter
->flags
);
721 static int ena_clean_tx_irq(struct ena_ring
*tx_ring
, u32 budget
)
723 struct netdev_queue
*txq
;
732 next_to_clean
= tx_ring
->next_to_clean
;
733 txq
= netdev_get_tx_queue(tx_ring
->netdev
, tx_ring
->qid
);
735 while (tx_pkts
< budget
) {
736 struct ena_tx_buffer
*tx_info
;
738 struct ena_com_buf
*ena_buf
;
741 rc
= ena_com_tx_comp_req_id_get(tx_ring
->ena_com_io_cq
,
746 rc
= validate_tx_req_id(tx_ring
, req_id
);
750 tx_info
= &tx_ring
->tx_buffer_info
[req_id
];
753 /* prefetch skb_end_pointer() to speedup skb_shinfo(skb) */
757 tx_info
->last_jiffies
= 0;
759 if (likely(tx_info
->num_of_bufs
!= 0)) {
760 ena_buf
= tx_info
->bufs
;
762 dma_unmap_single(tx_ring
->dev
,
763 dma_unmap_addr(ena_buf
, paddr
),
764 dma_unmap_len(ena_buf
, len
),
767 /* unmap remaining mapped pages */
768 nr_frags
= tx_info
->num_of_bufs
- 1;
769 for (i
= 0; i
< nr_frags
; i
++) {
771 dma_unmap_page(tx_ring
->dev
,
772 dma_unmap_addr(ena_buf
, paddr
),
773 dma_unmap_len(ena_buf
, len
),
778 netif_dbg(tx_ring
->adapter
, tx_done
, tx_ring
->netdev
,
779 "tx_poll: q %d skb %p completed\n", tx_ring
->qid
,
782 tx_bytes
+= skb
->len
;
785 total_done
+= tx_info
->tx_descs
;
787 tx_ring
->free_tx_ids
[next_to_clean
] = req_id
;
788 next_to_clean
= ENA_TX_RING_IDX_NEXT(next_to_clean
,
792 tx_ring
->next_to_clean
= next_to_clean
;
793 ena_com_comp_ack(tx_ring
->ena_com_io_sq
, total_done
);
794 ena_com_update_dev_comp_head(tx_ring
->ena_com_io_cq
);
796 netdev_tx_completed_queue(txq
, tx_pkts
, tx_bytes
);
798 netif_dbg(tx_ring
->adapter
, tx_done
, tx_ring
->netdev
,
799 "tx_poll: q %d done. total pkts: %d\n",
800 tx_ring
->qid
, tx_pkts
);
802 /* need to make the rings circular update visible to
803 * ena_start_xmit() before checking for netif_queue_stopped().
807 above_thresh
= ena_com_sq_empty_space(tx_ring
->ena_com_io_sq
) >
808 ENA_TX_WAKEUP_THRESH
;
809 if (unlikely(netif_tx_queue_stopped(txq
) && above_thresh
)) {
810 __netif_tx_lock(txq
, smp_processor_id());
811 above_thresh
= ena_com_sq_empty_space(tx_ring
->ena_com_io_sq
) >
812 ENA_TX_WAKEUP_THRESH
;
813 if (netif_tx_queue_stopped(txq
) && above_thresh
) {
814 netif_tx_wake_queue(txq
);
815 u64_stats_update_begin(&tx_ring
->syncp
);
816 tx_ring
->tx_stats
.queue_wakeup
++;
817 u64_stats_update_end(&tx_ring
->syncp
);
819 __netif_tx_unlock(txq
);
822 tx_ring
->per_napi_bytes
+= tx_bytes
;
823 tx_ring
->per_napi_packets
+= tx_pkts
;
828 static struct sk_buff
*ena_rx_skb(struct ena_ring
*rx_ring
,
829 struct ena_com_rx_buf_info
*ena_bufs
,
834 struct ena_rx_buffer
*rx_info
;
835 u16 len
, req_id
, buf
= 0;
838 len
= ena_bufs
[buf
].len
;
839 req_id
= ena_bufs
[buf
].req_id
;
840 rx_info
= &rx_ring
->rx_buffer_info
[req_id
];
842 if (unlikely(!rx_info
->page
)) {
843 netif_err(rx_ring
->adapter
, rx_err
, rx_ring
->netdev
,
848 netif_dbg(rx_ring
->adapter
, rx_status
, rx_ring
->netdev
,
849 "rx_info %p page %p\n",
850 rx_info
, rx_info
->page
);
852 /* save virt address of first buffer */
853 va
= page_address(rx_info
->page
) + rx_info
->page_offset
;
854 prefetch(va
+ NET_IP_ALIGN
);
856 if (len
<= rx_ring
->rx_copybreak
) {
857 skb
= netdev_alloc_skb_ip_align(rx_ring
->netdev
,
858 rx_ring
->rx_copybreak
);
859 if (unlikely(!skb
)) {
860 u64_stats_update_begin(&rx_ring
->syncp
);
861 rx_ring
->rx_stats
.skb_alloc_fail
++;
862 u64_stats_update_end(&rx_ring
->syncp
);
863 netif_err(rx_ring
->adapter
, rx_err
, rx_ring
->netdev
,
864 "Failed to allocate skb\n");
868 netif_dbg(rx_ring
->adapter
, rx_status
, rx_ring
->netdev
,
869 "rx allocated small packet. len %d. data_len %d\n",
870 skb
->len
, skb
->data_len
);
872 /* sync this buffer for CPU use */
873 dma_sync_single_for_cpu(rx_ring
->dev
,
874 dma_unmap_addr(&rx_info
->ena_buf
, paddr
),
877 skb_copy_to_linear_data(skb
, va
, len
);
878 dma_sync_single_for_device(rx_ring
->dev
,
879 dma_unmap_addr(&rx_info
->ena_buf
, paddr
),
884 skb
->protocol
= eth_type_trans(skb
, rx_ring
->netdev
);
885 *next_to_clean
= ENA_RX_RING_IDX_ADD(*next_to_clean
, descs
,
890 skb
= napi_get_frags(rx_ring
->napi
);
891 if (unlikely(!skb
)) {
892 netif_dbg(rx_ring
->adapter
, rx_status
, rx_ring
->netdev
,
893 "Failed allocating skb\n");
894 u64_stats_update_begin(&rx_ring
->syncp
);
895 rx_ring
->rx_stats
.skb_alloc_fail
++;
896 u64_stats_update_end(&rx_ring
->syncp
);
901 dma_unmap_page(rx_ring
->dev
,
902 dma_unmap_addr(&rx_info
->ena_buf
, paddr
),
903 PAGE_SIZE
, DMA_FROM_DEVICE
);
905 skb_add_rx_frag(skb
, skb_shinfo(skb
)->nr_frags
, rx_info
->page
,
906 rx_info
->page_offset
, len
, PAGE_SIZE
);
908 netif_dbg(rx_ring
->adapter
, rx_status
, rx_ring
->netdev
,
909 "rx skb updated. len %d. data_len %d\n",
910 skb
->len
, skb
->data_len
);
912 rx_info
->page
= NULL
;
914 rx_ring
->free_rx_ids
[*next_to_clean
] = req_id
;
916 ENA_RX_RING_IDX_NEXT(*next_to_clean
,
918 if (likely(--descs
== 0))
922 len
= ena_bufs
[buf
].len
;
923 req_id
= ena_bufs
[buf
].req_id
;
924 rx_info
= &rx_ring
->rx_buffer_info
[req_id
];
930 /* ena_rx_checksum - indicate in skb if hw indicated a good cksum
931 * @adapter: structure containing adapter specific data
932 * @ena_rx_ctx: received packet context/metadata
933 * @skb: skb currently being received and modified
935 static inline void ena_rx_checksum(struct ena_ring
*rx_ring
,
936 struct ena_com_rx_ctx
*ena_rx_ctx
,
939 /* Rx csum disabled */
940 if (unlikely(!(rx_ring
->netdev
->features
& NETIF_F_RXCSUM
))) {
941 skb
->ip_summed
= CHECKSUM_NONE
;
945 /* For fragmented packets the checksum isn't valid */
946 if (ena_rx_ctx
->frag
) {
947 skb
->ip_summed
= CHECKSUM_NONE
;
951 /* if IP and error */
952 if (unlikely((ena_rx_ctx
->l3_proto
== ENA_ETH_IO_L3_PROTO_IPV4
) &&
953 (ena_rx_ctx
->l3_csum_err
))) {
954 /* ipv4 checksum error */
955 skb
->ip_summed
= CHECKSUM_NONE
;
956 u64_stats_update_begin(&rx_ring
->syncp
);
957 rx_ring
->rx_stats
.bad_csum
++;
958 u64_stats_update_end(&rx_ring
->syncp
);
959 netif_err(rx_ring
->adapter
, rx_err
, rx_ring
->netdev
,
960 "RX IPv4 header checksum error\n");
965 if (likely((ena_rx_ctx
->l4_proto
== ENA_ETH_IO_L4_PROTO_TCP
) ||
966 (ena_rx_ctx
->l4_proto
== ENA_ETH_IO_L4_PROTO_UDP
))) {
967 if (unlikely(ena_rx_ctx
->l4_csum_err
)) {
968 /* TCP/UDP checksum error */
969 u64_stats_update_begin(&rx_ring
->syncp
);
970 rx_ring
->rx_stats
.bad_csum
++;
971 u64_stats_update_end(&rx_ring
->syncp
);
972 netif_err(rx_ring
->adapter
, rx_err
, rx_ring
->netdev
,
973 "RX L4 checksum error\n");
974 skb
->ip_summed
= CHECKSUM_NONE
;
978 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
982 static void ena_set_rx_hash(struct ena_ring
*rx_ring
,
983 struct ena_com_rx_ctx
*ena_rx_ctx
,
986 enum pkt_hash_types hash_type
;
988 if (likely(rx_ring
->netdev
->features
& NETIF_F_RXHASH
)) {
989 if (likely((ena_rx_ctx
->l4_proto
== ENA_ETH_IO_L4_PROTO_TCP
) ||
990 (ena_rx_ctx
->l4_proto
== ENA_ETH_IO_L4_PROTO_UDP
)))
992 hash_type
= PKT_HASH_TYPE_L4
;
994 hash_type
= PKT_HASH_TYPE_NONE
;
996 /* Override hash type if the packet is fragmented */
997 if (ena_rx_ctx
->frag
)
998 hash_type
= PKT_HASH_TYPE_NONE
;
1000 skb_set_hash(skb
, ena_rx_ctx
->hash
, hash_type
);
1004 /* ena_clean_rx_irq - Cleanup RX irq
1005 * @rx_ring: RX ring to clean
1006 * @napi: napi handler
1007 * @budget: how many packets driver is allowed to clean
1009 * Returns the number of cleaned buffers.
1011 static int ena_clean_rx_irq(struct ena_ring
*rx_ring
, struct napi_struct
*napi
,
1014 u16 next_to_clean
= rx_ring
->next_to_clean
;
1015 u32 res_budget
, work_done
;
1017 struct ena_com_rx_ctx ena_rx_ctx
;
1018 struct ena_adapter
*adapter
;
1019 struct sk_buff
*skb
;
1020 int refill_required
;
1021 int refill_threshold
;
1024 int rx_copybreak_pkt
= 0;
1027 netif_dbg(rx_ring
->adapter
, rx_status
, rx_ring
->netdev
,
1028 "%s qid %d\n", __func__
, rx_ring
->qid
);
1029 res_budget
= budget
;
1032 ena_rx_ctx
.ena_bufs
= rx_ring
->ena_bufs
;
1033 ena_rx_ctx
.max_bufs
= rx_ring
->sgl_size
;
1034 ena_rx_ctx
.descs
= 0;
1035 rc
= ena_com_rx_pkt(rx_ring
->ena_com_io_cq
,
1036 rx_ring
->ena_com_io_sq
,
1041 if (unlikely(ena_rx_ctx
.descs
== 0))
1044 netif_dbg(rx_ring
->adapter
, rx_status
, rx_ring
->netdev
,
1045 "rx_poll: q %d got packet from ena. descs #: %d l3 proto %d l4 proto %d hash: %x\n",
1046 rx_ring
->qid
, ena_rx_ctx
.descs
, ena_rx_ctx
.l3_proto
,
1047 ena_rx_ctx
.l4_proto
, ena_rx_ctx
.hash
);
1049 /* allocate skb and fill it */
1050 skb
= ena_rx_skb(rx_ring
, rx_ring
->ena_bufs
, ena_rx_ctx
.descs
,
1053 /* exit if we failed to retrieve a buffer */
1054 if (unlikely(!skb
)) {
1055 for (i
= 0; i
< ena_rx_ctx
.descs
; i
++) {
1056 rx_ring
->free_tx_ids
[next_to_clean
] =
1057 rx_ring
->ena_bufs
[i
].req_id
;
1059 ENA_RX_RING_IDX_NEXT(next_to_clean
,
1060 rx_ring
->ring_size
);
1065 ena_rx_checksum(rx_ring
, &ena_rx_ctx
, skb
);
1067 ena_set_rx_hash(rx_ring
, &ena_rx_ctx
, skb
);
1069 skb_record_rx_queue(skb
, rx_ring
->qid
);
1071 if (rx_ring
->ena_bufs
[0].len
<= rx_ring
->rx_copybreak
) {
1072 total_len
+= rx_ring
->ena_bufs
[0].len
;
1074 napi_gro_receive(napi
, skb
);
1076 total_len
+= skb
->len
;
1077 napi_gro_frags(napi
);
1081 } while (likely(res_budget
));
1083 work_done
= budget
- res_budget
;
1084 rx_ring
->per_napi_bytes
+= total_len
;
1085 rx_ring
->per_napi_packets
+= work_done
;
1086 u64_stats_update_begin(&rx_ring
->syncp
);
1087 rx_ring
->rx_stats
.bytes
+= total_len
;
1088 rx_ring
->rx_stats
.cnt
+= work_done
;
1089 rx_ring
->rx_stats
.rx_copybreak_pkt
+= rx_copybreak_pkt
;
1090 u64_stats_update_end(&rx_ring
->syncp
);
1092 rx_ring
->next_to_clean
= next_to_clean
;
1094 refill_required
= ena_com_sq_empty_space(rx_ring
->ena_com_io_sq
);
1095 refill_threshold
= rx_ring
->ring_size
/ ENA_RX_REFILL_THRESH_DIVIDER
;
1097 /* Optimization, try to batch new rx buffers */
1098 if (refill_required
> refill_threshold
) {
1099 ena_com_update_dev_comp_head(rx_ring
->ena_com_io_cq
);
1100 ena_refill_rx_bufs(rx_ring
, refill_required
);
1106 adapter
= netdev_priv(rx_ring
->netdev
);
1108 u64_stats_update_begin(&rx_ring
->syncp
);
1109 rx_ring
->rx_stats
.bad_desc_num
++;
1110 u64_stats_update_end(&rx_ring
->syncp
);
1112 /* Too many desc from the device. Trigger reset */
1113 adapter
->reset_reason
= ENA_REGS_RESET_TOO_MANY_RX_DESCS
;
1114 set_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
);
1119 inline void ena_adjust_intr_moderation(struct ena_ring
*rx_ring
,
1120 struct ena_ring
*tx_ring
)
1122 /* We apply adaptive moderation on Rx path only.
1123 * Tx uses static interrupt moderation.
1125 ena_com_calculate_interrupt_delay(rx_ring
->ena_dev
,
1126 rx_ring
->per_napi_packets
,
1127 rx_ring
->per_napi_bytes
,
1128 &rx_ring
->smoothed_interval
,
1129 &rx_ring
->moder_tbl_idx
);
1131 /* Reset per napi packets/bytes */
1132 tx_ring
->per_napi_packets
= 0;
1133 tx_ring
->per_napi_bytes
= 0;
1134 rx_ring
->per_napi_packets
= 0;
1135 rx_ring
->per_napi_bytes
= 0;
1138 static inline void ena_unmask_interrupt(struct ena_ring
*tx_ring
,
1139 struct ena_ring
*rx_ring
)
1141 struct ena_eth_io_intr_reg intr_reg
;
1143 /* Update intr register: rx intr delay,
1144 * tx intr delay and interrupt unmask
1146 ena_com_update_intr_reg(&intr_reg
,
1147 rx_ring
->smoothed_interval
,
1148 tx_ring
->smoothed_interval
,
1151 /* It is a shared MSI-X.
1152 * Tx and Rx CQ have pointer to it.
1153 * So we use one of them to reach the intr reg
1155 ena_com_unmask_intr(rx_ring
->ena_com_io_cq
, &intr_reg
);
1158 static inline void ena_update_ring_numa_node(struct ena_ring
*tx_ring
,
1159 struct ena_ring
*rx_ring
)
1161 int cpu
= get_cpu();
1164 /* Check only one ring since the 2 rings are running on the same cpu */
1165 if (likely(tx_ring
->cpu
== cpu
))
1168 numa_node
= cpu_to_node(cpu
);
1171 if (numa_node
!= NUMA_NO_NODE
) {
1172 ena_com_update_numa_node(tx_ring
->ena_com_io_cq
, numa_node
);
1173 ena_com_update_numa_node(rx_ring
->ena_com_io_cq
, numa_node
);
1184 static int ena_io_poll(struct napi_struct
*napi
, int budget
)
1186 struct ena_napi
*ena_napi
= container_of(napi
, struct ena_napi
, napi
);
1187 struct ena_ring
*tx_ring
, *rx_ring
;
1192 int napi_comp_call
= 0;
1195 tx_ring
= ena_napi
->tx_ring
;
1196 rx_ring
= ena_napi
->rx_ring
;
1198 tx_budget
= tx_ring
->ring_size
/ ENA_TX_POLL_BUDGET_DIVIDER
;
1200 if (!test_bit(ENA_FLAG_DEV_UP
, &tx_ring
->adapter
->flags
) ||
1201 test_bit(ENA_FLAG_TRIGGER_RESET
, &tx_ring
->adapter
->flags
)) {
1202 napi_complete_done(napi
, 0);
1206 tx_work_done
= ena_clean_tx_irq(tx_ring
, tx_budget
);
1207 rx_work_done
= ena_clean_rx_irq(rx_ring
, napi
, budget
);
1209 /* If the device is about to reset or down, avoid unmask
1210 * the interrupt and return 0 so NAPI won't reschedule
1212 if (unlikely(!test_bit(ENA_FLAG_DEV_UP
, &tx_ring
->adapter
->flags
) ||
1213 test_bit(ENA_FLAG_TRIGGER_RESET
, &tx_ring
->adapter
->flags
))) {
1214 napi_complete_done(napi
, 0);
1217 } else if ((budget
> rx_work_done
) && (tx_budget
> tx_work_done
)) {
1220 /* Update numa and unmask the interrupt only when schedule
1221 * from the interrupt context (vs from sk_busy_loop)
1223 if (napi_complete_done(napi
, rx_work_done
)) {
1224 /* Tx and Rx share the same interrupt vector */
1225 if (ena_com_get_adaptive_moderation_enabled(rx_ring
->ena_dev
))
1226 ena_adjust_intr_moderation(rx_ring
, tx_ring
);
1228 ena_unmask_interrupt(tx_ring
, rx_ring
);
1231 ena_update_ring_numa_node(tx_ring
, rx_ring
);
1238 u64_stats_update_begin(&tx_ring
->syncp
);
1239 tx_ring
->tx_stats
.napi_comp
+= napi_comp_call
;
1240 tx_ring
->tx_stats
.tx_poll
++;
1241 u64_stats_update_end(&tx_ring
->syncp
);
1246 static irqreturn_t
ena_intr_msix_mgmnt(int irq
, void *data
)
1248 struct ena_adapter
*adapter
= (struct ena_adapter
*)data
;
1250 ena_com_admin_q_comp_intr_handler(adapter
->ena_dev
);
1252 /* Don't call the aenq handler before probe is done */
1253 if (likely(test_bit(ENA_FLAG_DEVICE_RUNNING
, &adapter
->flags
)))
1254 ena_com_aenq_intr_handler(adapter
->ena_dev
, data
);
1259 /* ena_intr_msix_io - MSI-X Interrupt Handler for Tx/Rx
1260 * @irq: interrupt number
1261 * @data: pointer to a network interface private napi device structure
1263 static irqreturn_t
ena_intr_msix_io(int irq
, void *data
)
1265 struct ena_napi
*ena_napi
= data
;
1267 napi_schedule_irqoff(&ena_napi
->napi
);
1272 /* Reserve a single MSI-X vector for management (admin + aenq).
1273 * plus reserve one vector for each potential io queue.
1274 * the number of potential io queues is the minimum of what the device
1275 * supports and the number of vCPUs.
1277 static int ena_enable_msix(struct ena_adapter
*adapter
, int num_queues
)
1279 int msix_vecs
, irq_cnt
;
1281 if (test_bit(ENA_FLAG_MSIX_ENABLED
, &adapter
->flags
)) {
1282 netif_err(adapter
, probe
, adapter
->netdev
,
1283 "Error, MSI-X is already enabled\n");
1287 /* Reserved the max msix vectors we might need */
1288 msix_vecs
= ENA_MAX_MSIX_VEC(num_queues
);
1290 netif_dbg(adapter
, probe
, adapter
->netdev
,
1291 "trying to enable MSI-X, vectors %d\n", msix_vecs
);
1293 irq_cnt
= pci_alloc_irq_vectors(adapter
->pdev
, ENA_MIN_MSIX_VEC
,
1294 msix_vecs
, PCI_IRQ_MSIX
);
1297 netif_err(adapter
, probe
, adapter
->netdev
,
1298 "Failed to enable MSI-X. irq_cnt %d\n", irq_cnt
);
1302 if (irq_cnt
!= msix_vecs
) {
1303 netif_notice(adapter
, probe
, adapter
->netdev
,
1304 "enable only %d MSI-X (out of %d), reduce the number of queues\n",
1305 irq_cnt
, msix_vecs
);
1306 adapter
->num_queues
= irq_cnt
- ENA_ADMIN_MSIX_VEC
;
1309 if (ena_init_rx_cpu_rmap(adapter
))
1310 netif_warn(adapter
, probe
, adapter
->netdev
,
1311 "Failed to map IRQs to CPUs\n");
1313 adapter
->msix_vecs
= irq_cnt
;
1314 set_bit(ENA_FLAG_MSIX_ENABLED
, &adapter
->flags
);
1319 static void ena_setup_mgmnt_intr(struct ena_adapter
*adapter
)
1323 snprintf(adapter
->irq_tbl
[ENA_MGMNT_IRQ_IDX
].name
,
1324 ENA_IRQNAME_SIZE
, "ena-mgmnt@pci:%s",
1325 pci_name(adapter
->pdev
));
1326 adapter
->irq_tbl
[ENA_MGMNT_IRQ_IDX
].handler
=
1327 ena_intr_msix_mgmnt
;
1328 adapter
->irq_tbl
[ENA_MGMNT_IRQ_IDX
].data
= adapter
;
1329 adapter
->irq_tbl
[ENA_MGMNT_IRQ_IDX
].vector
=
1330 pci_irq_vector(adapter
->pdev
, ENA_MGMNT_IRQ_IDX
);
1331 cpu
= cpumask_first(cpu_online_mask
);
1332 adapter
->irq_tbl
[ENA_MGMNT_IRQ_IDX
].cpu
= cpu
;
1333 cpumask_set_cpu(cpu
,
1334 &adapter
->irq_tbl
[ENA_MGMNT_IRQ_IDX
].affinity_hint_mask
);
1337 static void ena_setup_io_intr(struct ena_adapter
*adapter
)
1339 struct net_device
*netdev
;
1340 int irq_idx
, i
, cpu
;
1342 netdev
= adapter
->netdev
;
1344 for (i
= 0; i
< adapter
->num_queues
; i
++) {
1345 irq_idx
= ENA_IO_IRQ_IDX(i
);
1346 cpu
= i
% num_online_cpus();
1348 snprintf(adapter
->irq_tbl
[irq_idx
].name
, ENA_IRQNAME_SIZE
,
1349 "%s-Tx-Rx-%d", netdev
->name
, i
);
1350 adapter
->irq_tbl
[irq_idx
].handler
= ena_intr_msix_io
;
1351 adapter
->irq_tbl
[irq_idx
].data
= &adapter
->ena_napi
[i
];
1352 adapter
->irq_tbl
[irq_idx
].vector
=
1353 pci_irq_vector(adapter
->pdev
, irq_idx
);
1354 adapter
->irq_tbl
[irq_idx
].cpu
= cpu
;
1356 cpumask_set_cpu(cpu
,
1357 &adapter
->irq_tbl
[irq_idx
].affinity_hint_mask
);
1361 static int ena_request_mgmnt_irq(struct ena_adapter
*adapter
)
1363 unsigned long flags
= 0;
1364 struct ena_irq
*irq
;
1367 irq
= &adapter
->irq_tbl
[ENA_MGMNT_IRQ_IDX
];
1368 rc
= request_irq(irq
->vector
, irq
->handler
, flags
, irq
->name
,
1371 netif_err(adapter
, probe
, adapter
->netdev
,
1372 "failed to request admin irq\n");
1376 netif_dbg(adapter
, probe
, adapter
->netdev
,
1377 "set affinity hint of mgmnt irq.to 0x%lx (irq vector: %d)\n",
1378 irq
->affinity_hint_mask
.bits
[0], irq
->vector
);
1380 irq_set_affinity_hint(irq
->vector
, &irq
->affinity_hint_mask
);
1385 static int ena_request_io_irq(struct ena_adapter
*adapter
)
1387 unsigned long flags
= 0;
1388 struct ena_irq
*irq
;
1391 if (!test_bit(ENA_FLAG_MSIX_ENABLED
, &adapter
->flags
)) {
1392 netif_err(adapter
, ifup
, adapter
->netdev
,
1393 "Failed to request I/O IRQ: MSI-X is not enabled\n");
1397 for (i
= ENA_IO_IRQ_FIRST_IDX
; i
< adapter
->msix_vecs
; i
++) {
1398 irq
= &adapter
->irq_tbl
[i
];
1399 rc
= request_irq(irq
->vector
, irq
->handler
, flags
, irq
->name
,
1402 netif_err(adapter
, ifup
, adapter
->netdev
,
1403 "Failed to request I/O IRQ. index %d rc %d\n",
1408 netif_dbg(adapter
, ifup
, adapter
->netdev
,
1409 "set affinity hint of irq. index %d to 0x%lx (irq vector: %d)\n",
1410 i
, irq
->affinity_hint_mask
.bits
[0], irq
->vector
);
1412 irq_set_affinity_hint(irq
->vector
, &irq
->affinity_hint_mask
);
1418 for (k
= ENA_IO_IRQ_FIRST_IDX
; k
< i
; k
++) {
1419 irq
= &adapter
->irq_tbl
[k
];
1420 free_irq(irq
->vector
, irq
->data
);
1426 static void ena_free_mgmnt_irq(struct ena_adapter
*adapter
)
1428 struct ena_irq
*irq
;
1430 irq
= &adapter
->irq_tbl
[ENA_MGMNT_IRQ_IDX
];
1431 synchronize_irq(irq
->vector
);
1432 irq_set_affinity_hint(irq
->vector
, NULL
);
1433 free_irq(irq
->vector
, irq
->data
);
1436 static void ena_free_io_irq(struct ena_adapter
*adapter
)
1438 struct ena_irq
*irq
;
1441 #ifdef CONFIG_RFS_ACCEL
1442 if (adapter
->msix_vecs
>= 1) {
1443 free_irq_cpu_rmap(adapter
->netdev
->rx_cpu_rmap
);
1444 adapter
->netdev
->rx_cpu_rmap
= NULL
;
1446 #endif /* CONFIG_RFS_ACCEL */
1448 for (i
= ENA_IO_IRQ_FIRST_IDX
; i
< adapter
->msix_vecs
; i
++) {
1449 irq
= &adapter
->irq_tbl
[i
];
1450 irq_set_affinity_hint(irq
->vector
, NULL
);
1451 free_irq(irq
->vector
, irq
->data
);
1455 static void ena_disable_msix(struct ena_adapter
*adapter
)
1457 if (test_and_clear_bit(ENA_FLAG_MSIX_ENABLED
, &adapter
->flags
))
1458 pci_free_irq_vectors(adapter
->pdev
);
1461 static void ena_disable_io_intr_sync(struct ena_adapter
*adapter
)
1465 if (!netif_running(adapter
->netdev
))
1468 for (i
= ENA_IO_IRQ_FIRST_IDX
; i
< adapter
->msix_vecs
; i
++)
1469 synchronize_irq(adapter
->irq_tbl
[i
].vector
);
1472 static void ena_del_napi(struct ena_adapter
*adapter
)
1476 for (i
= 0; i
< adapter
->num_queues
; i
++)
1477 netif_napi_del(&adapter
->ena_napi
[i
].napi
);
1480 static void ena_init_napi(struct ena_adapter
*adapter
)
1482 struct ena_napi
*napi
;
1485 for (i
= 0; i
< adapter
->num_queues
; i
++) {
1486 napi
= &adapter
->ena_napi
[i
];
1488 netif_napi_add(adapter
->netdev
,
1489 &adapter
->ena_napi
[i
].napi
,
1492 napi
->rx_ring
= &adapter
->rx_ring
[i
];
1493 napi
->tx_ring
= &adapter
->tx_ring
[i
];
1498 static void ena_napi_disable_all(struct ena_adapter
*adapter
)
1502 for (i
= 0; i
< adapter
->num_queues
; i
++)
1503 napi_disable(&adapter
->ena_napi
[i
].napi
);
1506 static void ena_napi_enable_all(struct ena_adapter
*adapter
)
1510 for (i
= 0; i
< adapter
->num_queues
; i
++)
1511 napi_enable(&adapter
->ena_napi
[i
].napi
);
1514 static void ena_restore_ethtool_params(struct ena_adapter
*adapter
)
1516 adapter
->tx_usecs
= 0;
1517 adapter
->rx_usecs
= 0;
1518 adapter
->tx_frames
= 1;
1519 adapter
->rx_frames
= 1;
1522 /* Configure the Rx forwarding */
1523 static int ena_rss_configure(struct ena_adapter
*adapter
)
1525 struct ena_com_dev
*ena_dev
= adapter
->ena_dev
;
1528 /* In case the RSS table wasn't initialized by probe */
1529 if (!ena_dev
->rss
.tbl_log_size
) {
1530 rc
= ena_rss_init_default(adapter
);
1531 if (rc
&& (rc
!= -EOPNOTSUPP
)) {
1532 netif_err(adapter
, ifup
, adapter
->netdev
,
1533 "Failed to init RSS rc: %d\n", rc
);
1538 /* Set indirect table */
1539 rc
= ena_com_indirect_table_set(ena_dev
);
1540 if (unlikely(rc
&& rc
!= -EOPNOTSUPP
))
1543 /* Configure hash function (if supported) */
1544 rc
= ena_com_set_hash_function(ena_dev
);
1545 if (unlikely(rc
&& (rc
!= -EOPNOTSUPP
)))
1548 /* Configure hash inputs (if supported) */
1549 rc
= ena_com_set_hash_ctrl(ena_dev
);
1550 if (unlikely(rc
&& (rc
!= -EOPNOTSUPP
)))
1556 static int ena_up_complete(struct ena_adapter
*adapter
)
1560 rc
= ena_rss_configure(adapter
);
1564 ena_init_napi(adapter
);
1566 ena_change_mtu(adapter
->netdev
, adapter
->netdev
->mtu
);
1568 ena_refill_all_rx_bufs(adapter
);
1570 /* enable transmits */
1571 netif_tx_start_all_queues(adapter
->netdev
);
1573 ena_restore_ethtool_params(adapter
);
1575 ena_napi_enable_all(adapter
);
1577 /* Enable completion queues interrupt */
1578 for (i
= 0; i
< adapter
->num_queues
; i
++)
1579 ena_unmask_interrupt(&adapter
->tx_ring
[i
],
1580 &adapter
->rx_ring
[i
]);
1582 /* schedule napi in case we had pending packets
1583 * from the last time we disable napi
1585 for (i
= 0; i
< adapter
->num_queues
; i
++)
1586 napi_schedule(&adapter
->ena_napi
[i
].napi
);
1591 static int ena_create_io_tx_queue(struct ena_adapter
*adapter
, int qid
)
1593 struct ena_com_create_io_ctx ctx
= { 0 };
1594 struct ena_com_dev
*ena_dev
;
1595 struct ena_ring
*tx_ring
;
1600 ena_dev
= adapter
->ena_dev
;
1602 tx_ring
= &adapter
->tx_ring
[qid
];
1603 msix_vector
= ENA_IO_IRQ_IDX(qid
);
1604 ena_qid
= ENA_IO_TXQ_IDX(qid
);
1606 ctx
.direction
= ENA_COM_IO_QUEUE_DIRECTION_TX
;
1608 ctx
.mem_queue_type
= ena_dev
->tx_mem_queue_type
;
1609 ctx
.msix_vector
= msix_vector
;
1610 ctx
.queue_size
= adapter
->tx_ring_size
;
1611 ctx
.numa_node
= cpu_to_node(tx_ring
->cpu
);
1613 rc
= ena_com_create_io_queue(ena_dev
, &ctx
);
1615 netif_err(adapter
, ifup
, adapter
->netdev
,
1616 "Failed to create I/O TX queue num %d rc: %d\n",
1621 rc
= ena_com_get_io_handlers(ena_dev
, ena_qid
,
1622 &tx_ring
->ena_com_io_sq
,
1623 &tx_ring
->ena_com_io_cq
);
1625 netif_err(adapter
, ifup
, adapter
->netdev
,
1626 "Failed to get TX queue handlers. TX queue num %d rc: %d\n",
1628 ena_com_destroy_io_queue(ena_dev
, ena_qid
);
1632 ena_com_update_numa_node(tx_ring
->ena_com_io_cq
, ctx
.numa_node
);
1636 static int ena_create_all_io_tx_queues(struct ena_adapter
*adapter
)
1638 struct ena_com_dev
*ena_dev
= adapter
->ena_dev
;
1641 for (i
= 0; i
< adapter
->num_queues
; i
++) {
1642 rc
= ena_create_io_tx_queue(adapter
, i
);
1651 ena_com_destroy_io_queue(ena_dev
, ENA_IO_TXQ_IDX(i
));
1656 static int ena_create_io_rx_queue(struct ena_adapter
*adapter
, int qid
)
1658 struct ena_com_dev
*ena_dev
;
1659 struct ena_com_create_io_ctx ctx
= { 0 };
1660 struct ena_ring
*rx_ring
;
1665 ena_dev
= adapter
->ena_dev
;
1667 rx_ring
= &adapter
->rx_ring
[qid
];
1668 msix_vector
= ENA_IO_IRQ_IDX(qid
);
1669 ena_qid
= ENA_IO_RXQ_IDX(qid
);
1672 ctx
.direction
= ENA_COM_IO_QUEUE_DIRECTION_RX
;
1673 ctx
.mem_queue_type
= ENA_ADMIN_PLACEMENT_POLICY_HOST
;
1674 ctx
.msix_vector
= msix_vector
;
1675 ctx
.queue_size
= adapter
->rx_ring_size
;
1676 ctx
.numa_node
= cpu_to_node(rx_ring
->cpu
);
1678 rc
= ena_com_create_io_queue(ena_dev
, &ctx
);
1680 netif_err(adapter
, ifup
, adapter
->netdev
,
1681 "Failed to create I/O RX queue num %d rc: %d\n",
1686 rc
= ena_com_get_io_handlers(ena_dev
, ena_qid
,
1687 &rx_ring
->ena_com_io_sq
,
1688 &rx_ring
->ena_com_io_cq
);
1690 netif_err(adapter
, ifup
, adapter
->netdev
,
1691 "Failed to get RX queue handlers. RX queue num %d rc: %d\n",
1693 ena_com_destroy_io_queue(ena_dev
, ena_qid
);
1697 ena_com_update_numa_node(rx_ring
->ena_com_io_cq
, ctx
.numa_node
);
1702 static int ena_create_all_io_rx_queues(struct ena_adapter
*adapter
)
1704 struct ena_com_dev
*ena_dev
= adapter
->ena_dev
;
1707 for (i
= 0; i
< adapter
->num_queues
; i
++) {
1708 rc
= ena_create_io_rx_queue(adapter
, i
);
1717 ena_com_destroy_io_queue(ena_dev
, ENA_IO_RXQ_IDX(i
));
1722 static int ena_up(struct ena_adapter
*adapter
)
1726 netdev_dbg(adapter
->netdev
, "%s\n", __func__
);
1728 ena_setup_io_intr(adapter
);
1730 rc
= ena_request_io_irq(adapter
);
1734 /* allocate transmit descriptors */
1735 rc
= ena_setup_all_tx_resources(adapter
);
1739 /* allocate receive descriptors */
1740 rc
= ena_setup_all_rx_resources(adapter
);
1744 /* Create TX queues */
1745 rc
= ena_create_all_io_tx_queues(adapter
);
1747 goto err_create_tx_queues
;
1749 /* Create RX queues */
1750 rc
= ena_create_all_io_rx_queues(adapter
);
1752 goto err_create_rx_queues
;
1754 rc
= ena_up_complete(adapter
);
1758 if (test_bit(ENA_FLAG_LINK_UP
, &adapter
->flags
))
1759 netif_carrier_on(adapter
->netdev
);
1761 u64_stats_update_begin(&adapter
->syncp
);
1762 adapter
->dev_stats
.interface_up
++;
1763 u64_stats_update_end(&adapter
->syncp
);
1765 set_bit(ENA_FLAG_DEV_UP
, &adapter
->flags
);
1770 ena_destroy_all_rx_queues(adapter
);
1771 err_create_rx_queues
:
1772 ena_destroy_all_tx_queues(adapter
);
1773 err_create_tx_queues
:
1774 ena_free_all_io_rx_resources(adapter
);
1776 ena_free_all_io_tx_resources(adapter
);
1778 ena_free_io_irq(adapter
);
1784 static void ena_down(struct ena_adapter
*adapter
)
1786 netif_info(adapter
, ifdown
, adapter
->netdev
, "%s\n", __func__
);
1788 clear_bit(ENA_FLAG_DEV_UP
, &adapter
->flags
);
1790 u64_stats_update_begin(&adapter
->syncp
);
1791 adapter
->dev_stats
.interface_down
++;
1792 u64_stats_update_end(&adapter
->syncp
);
1794 netif_carrier_off(adapter
->netdev
);
1795 netif_tx_disable(adapter
->netdev
);
1797 /* After this point the napi handler won't enable the tx queue */
1798 ena_napi_disable_all(adapter
);
1800 /* After destroy the queue there won't be any new interrupts */
1802 if (test_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
)) {
1805 rc
= ena_com_dev_reset(adapter
->ena_dev
, adapter
->reset_reason
);
1807 dev_err(&adapter
->pdev
->dev
, "Device reset failed\n");
1810 ena_destroy_all_io_queues(adapter
);
1812 ena_disable_io_intr_sync(adapter
);
1813 ena_free_io_irq(adapter
);
1814 ena_del_napi(adapter
);
1816 ena_free_all_tx_bufs(adapter
);
1817 ena_free_all_rx_bufs(adapter
);
1818 ena_free_all_io_tx_resources(adapter
);
1819 ena_free_all_io_rx_resources(adapter
);
1822 /* ena_open - Called when a network interface is made active
1823 * @netdev: network interface device structure
1825 * Returns 0 on success, negative value on failure
1827 * The open entry point is called when a network interface is made
1828 * active by the system (IFF_UP). At this point all resources needed
1829 * for transmit and receive operations are allocated, the interrupt
1830 * handler is registered with the OS, the watchdog timer is started,
1831 * and the stack is notified that the interface is ready.
1833 static int ena_open(struct net_device
*netdev
)
1835 struct ena_adapter
*adapter
= netdev_priv(netdev
);
1838 /* Notify the stack of the actual queue counts. */
1839 rc
= netif_set_real_num_tx_queues(netdev
, adapter
->num_queues
);
1841 netif_err(adapter
, ifup
, netdev
, "Can't set num tx queues\n");
1845 rc
= netif_set_real_num_rx_queues(netdev
, adapter
->num_queues
);
1847 netif_err(adapter
, ifup
, netdev
, "Can't set num rx queues\n");
1851 rc
= ena_up(adapter
);
1858 /* ena_close - Disables a network interface
1859 * @netdev: network interface device structure
1861 * Returns 0, this is not allowed to fail
1863 * The close entry point is called when an interface is de-activated
1864 * by the OS. The hardware is still under the drivers control, but
1865 * needs to be disabled. A global MAC reset is issued to stop the
1866 * hardware, and all transmit and receive resources are freed.
1868 static int ena_close(struct net_device
*netdev
)
1870 struct ena_adapter
*adapter
= netdev_priv(netdev
);
1872 netif_dbg(adapter
, ifdown
, netdev
, "%s\n", __func__
);
1874 if (test_bit(ENA_FLAG_DEV_UP
, &adapter
->flags
))
1880 static void ena_tx_csum(struct ena_com_tx_ctx
*ena_tx_ctx
, struct sk_buff
*skb
)
1882 u32 mss
= skb_shinfo(skb
)->gso_size
;
1883 struct ena_com_tx_meta
*ena_meta
= &ena_tx_ctx
->ena_meta
;
1886 if ((skb
->ip_summed
== CHECKSUM_PARTIAL
) || mss
) {
1887 ena_tx_ctx
->l4_csum_enable
= 1;
1889 ena_tx_ctx
->tso_enable
= 1;
1890 ena_meta
->l4_hdr_len
= tcp_hdr(skb
)->doff
;
1891 ena_tx_ctx
->l4_csum_partial
= 0;
1893 ena_tx_ctx
->tso_enable
= 0;
1894 ena_meta
->l4_hdr_len
= 0;
1895 ena_tx_ctx
->l4_csum_partial
= 1;
1898 switch (ip_hdr(skb
)->version
) {
1900 ena_tx_ctx
->l3_proto
= ENA_ETH_IO_L3_PROTO_IPV4
;
1901 if (ip_hdr(skb
)->frag_off
& htons(IP_DF
))
1904 ena_tx_ctx
->l3_csum_enable
= 1;
1905 l4_protocol
= ip_hdr(skb
)->protocol
;
1908 ena_tx_ctx
->l3_proto
= ENA_ETH_IO_L3_PROTO_IPV6
;
1909 l4_protocol
= ipv6_hdr(skb
)->nexthdr
;
1915 if (l4_protocol
== IPPROTO_TCP
)
1916 ena_tx_ctx
->l4_proto
= ENA_ETH_IO_L4_PROTO_TCP
;
1918 ena_tx_ctx
->l4_proto
= ENA_ETH_IO_L4_PROTO_UDP
;
1920 ena_meta
->mss
= mss
;
1921 ena_meta
->l3_hdr_len
= skb_network_header_len(skb
);
1922 ena_meta
->l3_hdr_offset
= skb_network_offset(skb
);
1923 ena_tx_ctx
->meta_valid
= 1;
1926 ena_tx_ctx
->meta_valid
= 0;
1930 static int ena_check_and_linearize_skb(struct ena_ring
*tx_ring
,
1931 struct sk_buff
*skb
)
1933 int num_frags
, header_len
, rc
;
1935 num_frags
= skb_shinfo(skb
)->nr_frags
;
1936 header_len
= skb_headlen(skb
);
1938 if (num_frags
< tx_ring
->sgl_size
)
1941 if ((num_frags
== tx_ring
->sgl_size
) &&
1942 (header_len
< tx_ring
->tx_max_header_size
))
1945 u64_stats_update_begin(&tx_ring
->syncp
);
1946 tx_ring
->tx_stats
.linearize
++;
1947 u64_stats_update_end(&tx_ring
->syncp
);
1949 rc
= skb_linearize(skb
);
1951 u64_stats_update_begin(&tx_ring
->syncp
);
1952 tx_ring
->tx_stats
.linearize_failed
++;
1953 u64_stats_update_end(&tx_ring
->syncp
);
1959 /* Called with netif_tx_lock. */
1960 static netdev_tx_t
ena_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
1962 struct ena_adapter
*adapter
= netdev_priv(dev
);
1963 struct ena_tx_buffer
*tx_info
;
1964 struct ena_com_tx_ctx ena_tx_ctx
;
1965 struct ena_ring
*tx_ring
;
1966 struct netdev_queue
*txq
;
1967 struct ena_com_buf
*ena_buf
;
1975 int qid
, rc
, nb_hw_desc
;
1978 netif_dbg(adapter
, tx_queued
, dev
, "%s skb %p\n", __func__
, skb
);
1979 /* Determine which tx ring we will be placed on */
1980 qid
= skb_get_queue_mapping(skb
);
1981 tx_ring
= &adapter
->tx_ring
[qid
];
1982 txq
= netdev_get_tx_queue(dev
, qid
);
1984 rc
= ena_check_and_linearize_skb(tx_ring
, skb
);
1986 goto error_drop_packet
;
1988 skb_tx_timestamp(skb
);
1989 len
= skb_headlen(skb
);
1991 next_to_use
= tx_ring
->next_to_use
;
1992 req_id
= tx_ring
->free_tx_ids
[next_to_use
];
1993 tx_info
= &tx_ring
->tx_buffer_info
[req_id
];
1994 tx_info
->num_of_bufs
= 0;
1996 WARN(tx_info
->skb
, "SKB isn't NULL req_id %d\n", req_id
);
1997 ena_buf
= tx_info
->bufs
;
2000 if (tx_ring
->tx_mem_queue_type
== ENA_ADMIN_PLACEMENT_POLICY_DEV
) {
2001 /* prepared the push buffer */
2002 push_len
= min_t(u32
, len
, tx_ring
->tx_max_header_size
);
2003 header_len
= push_len
;
2004 push_hdr
= skb
->data
;
2007 header_len
= min_t(u32
, len
, tx_ring
->tx_max_header_size
);
2011 netif_dbg(adapter
, tx_queued
, dev
,
2012 "skb: %p header_buf->vaddr: %p push_len: %d\n", skb
,
2013 push_hdr
, push_len
);
2015 if (len
> push_len
) {
2016 dma
= dma_map_single(tx_ring
->dev
, skb
->data
+ push_len
,
2017 len
- push_len
, DMA_TO_DEVICE
);
2018 if (dma_mapping_error(tx_ring
->dev
, dma
))
2019 goto error_report_dma_error
;
2021 ena_buf
->paddr
= dma
;
2022 ena_buf
->len
= len
- push_len
;
2025 tx_info
->num_of_bufs
++;
2028 last_frag
= skb_shinfo(skb
)->nr_frags
;
2030 for (i
= 0; i
< last_frag
; i
++) {
2031 const skb_frag_t
*frag
= &skb_shinfo(skb
)->frags
[i
];
2033 len
= skb_frag_size(frag
);
2034 dma
= skb_frag_dma_map(tx_ring
->dev
, frag
, 0, len
,
2036 if (dma_mapping_error(tx_ring
->dev
, dma
))
2037 goto error_report_dma_error
;
2039 ena_buf
->paddr
= dma
;
2044 tx_info
->num_of_bufs
+= last_frag
;
2046 memset(&ena_tx_ctx
, 0x0, sizeof(struct ena_com_tx_ctx
));
2047 ena_tx_ctx
.ena_bufs
= tx_info
->bufs
;
2048 ena_tx_ctx
.push_header
= push_hdr
;
2049 ena_tx_ctx
.num_bufs
= tx_info
->num_of_bufs
;
2050 ena_tx_ctx
.req_id
= req_id
;
2051 ena_tx_ctx
.header_len
= header_len
;
2053 /* set flags and meta data */
2054 ena_tx_csum(&ena_tx_ctx
, skb
);
2056 /* prepare the packet's descriptors to dma engine */
2057 rc
= ena_com_prepare_tx(tx_ring
->ena_com_io_sq
, &ena_tx_ctx
,
2061 netif_err(adapter
, tx_queued
, dev
,
2062 "failed to prepare tx bufs\n");
2063 u64_stats_update_begin(&tx_ring
->syncp
);
2064 tx_ring
->tx_stats
.queue_stop
++;
2065 tx_ring
->tx_stats
.prepare_ctx_err
++;
2066 u64_stats_update_end(&tx_ring
->syncp
);
2067 netif_tx_stop_queue(txq
);
2068 goto error_unmap_dma
;
2071 netdev_tx_sent_queue(txq
, skb
->len
);
2073 u64_stats_update_begin(&tx_ring
->syncp
);
2074 tx_ring
->tx_stats
.cnt
++;
2075 tx_ring
->tx_stats
.bytes
+= skb
->len
;
2076 u64_stats_update_end(&tx_ring
->syncp
);
2078 tx_info
->tx_descs
= nb_hw_desc
;
2079 tx_info
->last_jiffies
= jiffies
;
2080 tx_info
->print_once
= 0;
2082 tx_ring
->next_to_use
= ENA_TX_RING_IDX_NEXT(next_to_use
,
2083 tx_ring
->ring_size
);
2085 /* This WMB is aimed to:
2086 * 1 - perform smp barrier before reading next_to_completion
2087 * 2 - make sure the desc were written before trigger DB
2091 /* stop the queue when no more space available, the packet can have up
2092 * to sgl_size + 2. one for the meta descriptor and one for header
2093 * (if the header is larger than tx_max_header_size).
2095 if (unlikely(ena_com_sq_empty_space(tx_ring
->ena_com_io_sq
) <
2096 (tx_ring
->sgl_size
+ 2))) {
2097 netif_dbg(adapter
, tx_queued
, dev
, "%s stop queue %d\n",
2100 netif_tx_stop_queue(txq
);
2101 u64_stats_update_begin(&tx_ring
->syncp
);
2102 tx_ring
->tx_stats
.queue_stop
++;
2103 u64_stats_update_end(&tx_ring
->syncp
);
2105 /* There is a rare condition where this function decide to
2106 * stop the queue but meanwhile clean_tx_irq updates
2107 * next_to_completion and terminates.
2108 * The queue will remain stopped forever.
2109 * To solve this issue this function perform rmb, check
2110 * the wakeup condition and wake up the queue if needed.
2114 if (ena_com_sq_empty_space(tx_ring
->ena_com_io_sq
)
2115 > ENA_TX_WAKEUP_THRESH
) {
2116 netif_tx_wake_queue(txq
);
2117 u64_stats_update_begin(&tx_ring
->syncp
);
2118 tx_ring
->tx_stats
.queue_wakeup
++;
2119 u64_stats_update_end(&tx_ring
->syncp
);
2123 if (netif_xmit_stopped(txq
) || !skb
->xmit_more
) {
2124 /* trigger the dma engine */
2125 ena_com_write_sq_doorbell(tx_ring
->ena_com_io_sq
);
2126 u64_stats_update_begin(&tx_ring
->syncp
);
2127 tx_ring
->tx_stats
.doorbells
++;
2128 u64_stats_update_end(&tx_ring
->syncp
);
2131 return NETDEV_TX_OK
;
2133 error_report_dma_error
:
2134 u64_stats_update_begin(&tx_ring
->syncp
);
2135 tx_ring
->tx_stats
.dma_mapping_err
++;
2136 u64_stats_update_end(&tx_ring
->syncp
);
2137 netdev_warn(adapter
->netdev
, "failed to map skb\n");
2139 tx_info
->skb
= NULL
;
2143 /* save value of frag that failed */
2146 /* start back at beginning and unmap skb */
2147 tx_info
->skb
= NULL
;
2148 ena_buf
= tx_info
->bufs
;
2149 dma_unmap_single(tx_ring
->dev
, dma_unmap_addr(ena_buf
, paddr
),
2150 dma_unmap_len(ena_buf
, len
), DMA_TO_DEVICE
);
2152 /* unmap remaining mapped pages */
2153 for (i
= 0; i
< last_frag
; i
++) {
2155 dma_unmap_page(tx_ring
->dev
, dma_unmap_addr(ena_buf
, paddr
),
2156 dma_unmap_len(ena_buf
, len
), DMA_TO_DEVICE
);
2163 return NETDEV_TX_OK
;
2166 #ifdef CONFIG_NET_POLL_CONTROLLER
2167 static void ena_netpoll(struct net_device
*netdev
)
2169 struct ena_adapter
*adapter
= netdev_priv(netdev
);
2172 /* Dont schedule NAPI if the driver is in the middle of reset
2173 * or netdev is down.
2176 if (!test_bit(ENA_FLAG_DEV_UP
, &adapter
->flags
) ||
2177 test_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
))
2180 for (i
= 0; i
< adapter
->num_queues
; i
++)
2181 napi_schedule(&adapter
->ena_napi
[i
].napi
);
2183 #endif /* CONFIG_NET_POLL_CONTROLLER */
2185 static u16
ena_select_queue(struct net_device
*dev
, struct sk_buff
*skb
,
2186 void *accel_priv
, select_queue_fallback_t fallback
)
2189 /* we suspect that this is good for in--kernel network services that
2190 * want to loop incoming skb rx to tx in normal user generated traffic,
2191 * most probably we will not get to this
2193 if (skb_rx_queue_recorded(skb
))
2194 qid
= skb_get_rx_queue(skb
);
2196 qid
= fallback(dev
, skb
);
2201 static void ena_config_host_info(struct ena_com_dev
*ena_dev
)
2203 struct ena_admin_host_info
*host_info
;
2206 /* Allocate only the host info */
2207 rc
= ena_com_allocate_host_info(ena_dev
);
2209 pr_err("Cannot allocate host info\n");
2213 host_info
= ena_dev
->host_attr
.host_info
;
2215 host_info
->os_type
= ENA_ADMIN_OS_LINUX
;
2216 host_info
->kernel_ver
= LINUX_VERSION_CODE
;
2217 strncpy(host_info
->kernel_ver_str
, utsname()->version
,
2218 sizeof(host_info
->kernel_ver_str
) - 1);
2219 host_info
->os_dist
= 0;
2220 strncpy(host_info
->os_dist_str
, utsname()->release
,
2221 sizeof(host_info
->os_dist_str
) - 1);
2222 host_info
->driver_version
=
2223 (DRV_MODULE_VER_MAJOR
) |
2224 (DRV_MODULE_VER_MINOR
<< ENA_ADMIN_HOST_INFO_MINOR_SHIFT
) |
2225 (DRV_MODULE_VER_SUBMINOR
<< ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT
);
2227 rc
= ena_com_set_host_attributes(ena_dev
);
2229 if (rc
== -EOPNOTSUPP
)
2230 pr_warn("Cannot set host attributes\n");
2232 pr_err("Cannot set host attributes\n");
2240 ena_com_delete_host_info(ena_dev
);
2243 static void ena_config_debug_area(struct ena_adapter
*adapter
)
2245 u32 debug_area_size
;
2248 ss_count
= ena_get_sset_count(adapter
->netdev
, ETH_SS_STATS
);
2249 if (ss_count
<= 0) {
2250 netif_err(adapter
, drv
, adapter
->netdev
,
2251 "SS count is negative\n");
2255 /* allocate 32 bytes for each string and 64bit for the value */
2256 debug_area_size
= ss_count
* ETH_GSTRING_LEN
+ sizeof(u64
) * ss_count
;
2258 rc
= ena_com_allocate_debug_area(adapter
->ena_dev
, debug_area_size
);
2260 pr_err("Cannot allocate debug area\n");
2264 rc
= ena_com_set_host_attributes(adapter
->ena_dev
);
2266 if (rc
== -EOPNOTSUPP
)
2267 netif_warn(adapter
, drv
, adapter
->netdev
,
2268 "Cannot set host attributes\n");
2270 netif_err(adapter
, drv
, adapter
->netdev
,
2271 "Cannot set host attributes\n");
2277 ena_com_delete_debug_area(adapter
->ena_dev
);
2280 static struct rtnl_link_stats64
*ena_get_stats64(struct net_device
*netdev
,
2281 struct rtnl_link_stats64
*stats
)
2283 struct ena_adapter
*adapter
= netdev_priv(netdev
);
2284 struct ena_ring
*rx_ring
, *tx_ring
;
2289 if (!test_bit(ENA_FLAG_DEV_UP
, &adapter
->flags
))
2292 for (i
= 0; i
< adapter
->num_queues
; i
++) {
2295 tx_ring
= &adapter
->tx_ring
[i
];
2298 start
= u64_stats_fetch_begin_irq(&tx_ring
->syncp
);
2299 packets
= tx_ring
->tx_stats
.cnt
;
2300 bytes
= tx_ring
->tx_stats
.bytes
;
2301 } while (u64_stats_fetch_retry_irq(&tx_ring
->syncp
, start
));
2303 stats
->tx_packets
+= packets
;
2304 stats
->tx_bytes
+= bytes
;
2306 rx_ring
= &adapter
->rx_ring
[i
];
2309 start
= u64_stats_fetch_begin_irq(&rx_ring
->syncp
);
2310 packets
= rx_ring
->rx_stats
.cnt
;
2311 bytes
= rx_ring
->rx_stats
.bytes
;
2312 } while (u64_stats_fetch_retry_irq(&rx_ring
->syncp
, start
));
2314 stats
->rx_packets
+= packets
;
2315 stats
->rx_bytes
+= bytes
;
2319 start
= u64_stats_fetch_begin_irq(&adapter
->syncp
);
2320 rx_drops
= adapter
->dev_stats
.rx_drops
;
2321 } while (u64_stats_fetch_retry_irq(&adapter
->syncp
, start
));
2323 stats
->rx_dropped
= rx_drops
;
2325 stats
->multicast
= 0;
2326 stats
->collisions
= 0;
2328 stats
->rx_length_errors
= 0;
2329 stats
->rx_crc_errors
= 0;
2330 stats
->rx_frame_errors
= 0;
2331 stats
->rx_fifo_errors
= 0;
2332 stats
->rx_missed_errors
= 0;
2333 stats
->tx_window_errors
= 0;
2335 stats
->rx_errors
= 0;
2336 stats
->tx_errors
= 0;
2341 static const struct net_device_ops ena_netdev_ops
= {
2342 .ndo_open
= ena_open
,
2343 .ndo_stop
= ena_close
,
2344 .ndo_start_xmit
= ena_start_xmit
,
2345 .ndo_select_queue
= ena_select_queue
,
2346 .ndo_get_stats64
= ena_get_stats64
,
2347 .ndo_tx_timeout
= ena_tx_timeout
,
2348 .ndo_change_mtu
= ena_change_mtu
,
2349 .ndo_set_mac_address
= NULL
,
2350 .ndo_validate_addr
= eth_validate_addr
,
2351 #ifdef CONFIG_NET_POLL_CONTROLLER
2352 .ndo_poll_controller
= ena_netpoll
,
2353 #endif /* CONFIG_NET_POLL_CONTROLLER */
2356 static void ena_device_io_suspend(struct work_struct
*work
)
2358 struct ena_adapter
*adapter
=
2359 container_of(work
, struct ena_adapter
, suspend_io_task
);
2360 struct net_device
*netdev
= adapter
->netdev
;
2362 /* ena_napi_disable_all disables only the IO handling.
2363 * We are still subject to AENQ keep alive watchdog.
2365 u64_stats_update_begin(&adapter
->syncp
);
2366 adapter
->dev_stats
.io_suspend
++;
2367 u64_stats_update_begin(&adapter
->syncp
);
2368 ena_napi_disable_all(adapter
);
2369 netif_tx_lock(netdev
);
2370 netif_device_detach(netdev
);
2371 netif_tx_unlock(netdev
);
2374 static void ena_device_io_resume(struct work_struct
*work
)
2376 struct ena_adapter
*adapter
=
2377 container_of(work
, struct ena_adapter
, resume_io_task
);
2378 struct net_device
*netdev
= adapter
->netdev
;
2380 u64_stats_update_begin(&adapter
->syncp
);
2381 adapter
->dev_stats
.io_resume
++;
2382 u64_stats_update_end(&adapter
->syncp
);
2384 netif_device_attach(netdev
);
2385 ena_napi_enable_all(adapter
);
2388 static int ena_device_validate_params(struct ena_adapter
*adapter
,
2389 struct ena_com_dev_get_features_ctx
*get_feat_ctx
)
2391 struct net_device
*netdev
= adapter
->netdev
;
2394 rc
= ether_addr_equal(get_feat_ctx
->dev_attr
.mac_addr
,
2397 netif_err(adapter
, drv
, netdev
,
2398 "Error, mac address are different\n");
2402 if ((get_feat_ctx
->max_queues
.max_cq_num
< adapter
->num_queues
) ||
2403 (get_feat_ctx
->max_queues
.max_sq_num
< adapter
->num_queues
)) {
2404 netif_err(adapter
, drv
, netdev
,
2405 "Error, device doesn't support enough queues\n");
2409 if (get_feat_ctx
->dev_attr
.max_mtu
< netdev
->mtu
) {
2410 netif_err(adapter
, drv
, netdev
,
2411 "Error, device max mtu is smaller than netdev MTU\n");
2418 static int ena_device_init(struct ena_com_dev
*ena_dev
, struct pci_dev
*pdev
,
2419 struct ena_com_dev_get_features_ctx
*get_feat_ctx
,
2422 struct device
*dev
= &pdev
->dev
;
2423 bool readless_supported
;
2428 rc
= ena_com_mmio_reg_read_request_init(ena_dev
);
2430 dev_err(dev
, "failed to init mmio read less\n");
2434 /* The PCIe configuration space revision id indicate if mmio reg
2437 readless_supported
= !(pdev
->revision
& ENA_MMIO_DISABLE_REG_READ
);
2438 ena_com_set_mmio_read_mode(ena_dev
, readless_supported
);
2440 rc
= ena_com_dev_reset(ena_dev
, ENA_REGS_RESET_NORMAL
);
2442 dev_err(dev
, "Can not reset device\n");
2443 goto err_mmio_read_less
;
2446 rc
= ena_com_validate_version(ena_dev
);
2448 dev_err(dev
, "device version is too low\n");
2449 goto err_mmio_read_less
;
2452 dma_width
= ena_com_get_dma_width(ena_dev
);
2453 if (dma_width
< 0) {
2454 dev_err(dev
, "Invalid dma width value %d", dma_width
);
2456 goto err_mmio_read_less
;
2459 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(dma_width
));
2461 dev_err(dev
, "pci_set_dma_mask failed 0x%x\n", rc
);
2462 goto err_mmio_read_less
;
2465 rc
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(dma_width
));
2467 dev_err(dev
, "err_pci_set_consistent_dma_mask failed 0x%x\n",
2469 goto err_mmio_read_less
;
2472 /* ENA admin level init */
2473 rc
= ena_com_admin_init(ena_dev
, &aenq_handlers
, true);
2476 "Can not initialize ena admin queue with device\n");
2477 goto err_mmio_read_less
;
2480 /* To enable the msix interrupts the driver needs to know the number
2481 * of queues. So the driver uses polling mode to retrieve this
2484 ena_com_set_admin_polling_mode(ena_dev
, true);
2486 ena_config_host_info(ena_dev
);
2488 /* Get Device Attributes*/
2489 rc
= ena_com_get_dev_attr_feat(ena_dev
, get_feat_ctx
);
2491 dev_err(dev
, "Cannot get attribute for ena device rc=%d\n", rc
);
2492 goto err_admin_init
;
2495 /* Try to turn all the available aenq groups */
2496 aenq_groups
= BIT(ENA_ADMIN_LINK_CHANGE
) |
2497 BIT(ENA_ADMIN_FATAL_ERROR
) |
2498 BIT(ENA_ADMIN_WARNING
) |
2499 BIT(ENA_ADMIN_NOTIFICATION
) |
2500 BIT(ENA_ADMIN_KEEP_ALIVE
);
2502 aenq_groups
&= get_feat_ctx
->aenq
.supported_groups
;
2504 rc
= ena_com_set_aenq_config(ena_dev
, aenq_groups
);
2506 dev_err(dev
, "Cannot configure aenq groups rc= %d\n", rc
);
2507 goto err_admin_init
;
2510 *wd_state
= !!(aenq_groups
& BIT(ENA_ADMIN_KEEP_ALIVE
));
2515 ena_com_delete_host_info(ena_dev
);
2516 ena_com_admin_destroy(ena_dev
);
2518 ena_com_mmio_reg_read_request_destroy(ena_dev
);
2523 static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter
*adapter
,
2526 struct ena_com_dev
*ena_dev
= adapter
->ena_dev
;
2527 struct device
*dev
= &adapter
->pdev
->dev
;
2530 rc
= ena_enable_msix(adapter
, io_vectors
);
2532 dev_err(dev
, "Can not reserve msix vectors\n");
2536 ena_setup_mgmnt_intr(adapter
);
2538 rc
= ena_request_mgmnt_irq(adapter
);
2540 dev_err(dev
, "Can not setup management interrupts\n");
2541 goto err_disable_msix
;
2544 ena_com_set_admin_polling_mode(ena_dev
, false);
2546 ena_com_admin_aenq_enable(ena_dev
);
2551 ena_disable_msix(adapter
);
2556 static void ena_fw_reset_device(struct work_struct
*work
)
2558 struct ena_com_dev_get_features_ctx get_feat_ctx
;
2559 struct ena_adapter
*adapter
=
2560 container_of(work
, struct ena_adapter
, reset_task
);
2561 struct net_device
*netdev
= adapter
->netdev
;
2562 struct ena_com_dev
*ena_dev
= adapter
->ena_dev
;
2563 struct pci_dev
*pdev
= adapter
->pdev
;
2564 bool dev_up
, wd_state
;
2567 if (unlikely(!test_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
))) {
2569 "device reset schedule while reset bit is off\n");
2573 netif_carrier_off(netdev
);
2575 del_timer_sync(&adapter
->timer_service
);
2579 dev_up
= test_bit(ENA_FLAG_DEV_UP
, &adapter
->flags
);
2580 ena_com_set_admin_running_state(ena_dev
, false);
2582 /* After calling ena_close the tx queues and the napi
2583 * are disabled so no one can interfere or touch the
2588 ena_free_mgmnt_irq(adapter
);
2590 ena_disable_msix(adapter
);
2592 ena_com_abort_admin_commands(ena_dev
);
2594 ena_com_wait_for_abort_completion(ena_dev
);
2596 ena_com_admin_destroy(ena_dev
);
2598 ena_com_mmio_reg_read_request_destroy(ena_dev
);
2600 adapter
->reset_reason
= ENA_REGS_RESET_NORMAL
;
2601 clear_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
);
2603 /* Finish with the destroy part. Start the init part */
2605 rc
= ena_device_init(ena_dev
, adapter
->pdev
, &get_feat_ctx
, &wd_state
);
2607 dev_err(&pdev
->dev
, "Can not initialize device\n");
2610 adapter
->wd_state
= wd_state
;
2612 rc
= ena_device_validate_params(adapter
, &get_feat_ctx
);
2614 dev_err(&pdev
->dev
, "Validation of device parameters failed\n");
2615 goto err_device_destroy
;
2618 rc
= ena_enable_msix_and_set_admin_interrupts(adapter
,
2619 adapter
->num_queues
);
2621 dev_err(&pdev
->dev
, "Enable MSI-X failed\n");
2622 goto err_device_destroy
;
2624 /* If the interface was up before the reset bring it up */
2626 rc
= ena_up(adapter
);
2628 dev_err(&pdev
->dev
, "Failed to create I/O queues\n");
2629 goto err_disable_msix
;
2633 mod_timer(&adapter
->timer_service
, round_jiffies(jiffies
+ HZ
));
2637 dev_err(&pdev
->dev
, "Device reset completed successfully\n");
2641 ena_free_mgmnt_irq(adapter
);
2642 ena_disable_msix(adapter
);
2644 ena_com_admin_destroy(ena_dev
);
2648 clear_bit(ENA_FLAG_DEVICE_RUNNING
, &adapter
->flags
);
2651 "Reset attempt failed. Can not reset the device\n");
2654 static int check_missing_comp_in_queue(struct ena_adapter
*adapter
,
2655 struct ena_ring
*tx_ring
)
2657 struct ena_tx_buffer
*tx_buf
;
2658 unsigned long last_jiffies
;
2662 for (i
= 0; i
< tx_ring
->ring_size
; i
++) {
2663 tx_buf
= &tx_ring
->tx_buffer_info
[i
];
2664 last_jiffies
= tx_buf
->last_jiffies
;
2665 if (unlikely(last_jiffies
&&
2666 time_is_before_jiffies(last_jiffies
+ adapter
->missing_tx_completion_to
))) {
2667 if (!tx_buf
->print_once
)
2668 netif_notice(adapter
, tx_err
, adapter
->netdev
,
2669 "Found a Tx that wasn't completed on time, qid %d, index %d.\n",
2672 tx_buf
->print_once
= 1;
2675 if (unlikely(missed_tx
> adapter
->missing_tx_completion_threshold
)) {
2676 netif_err(adapter
, tx_err
, adapter
->netdev
,
2677 "The number of lost tx completions is above the threshold (%d > %d). Reset the device\n",
2679 adapter
->missing_tx_completion_threshold
);
2680 adapter
->reset_reason
=
2681 ENA_REGS_RESET_MISS_TX_CMPL
;
2682 set_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
);
2691 static void check_for_missing_tx_completions(struct ena_adapter
*adapter
)
2693 struct ena_ring
*tx_ring
;
2696 /* Make sure the driver doesn't turn the device in other process */
2699 if (!test_bit(ENA_FLAG_DEV_UP
, &adapter
->flags
))
2702 if (test_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
))
2705 if (adapter
->missing_tx_completion_to
== ENA_HW_HINTS_NO_TIMEOUT
)
2708 budget
= ENA_MONITORED_TX_QUEUES
;
2710 for (i
= adapter
->last_monitored_tx_qid
; i
< adapter
->num_queues
; i
++) {
2711 tx_ring
= &adapter
->tx_ring
[i
];
2713 rc
= check_missing_comp_in_queue(adapter
, tx_ring
);
2722 adapter
->last_monitored_tx_qid
= i
% adapter
->num_queues
;
2725 /* trigger napi schedule after 2 consecutive detections */
2726 #define EMPTY_RX_REFILL 2
2727 /* For the rare case where the device runs out of Rx descriptors and the
2728 * napi handler failed to refill new Rx descriptors (due to a lack of memory
2730 * This case will lead to a deadlock:
2731 * The device won't send interrupts since all the new Rx packets will be dropped
2732 * The napi handler won't allocate new Rx descriptors so the device will be
2733 * able to send new packets.
2735 * This scenario can happen when the kernel's vm.min_free_kbytes is too small.
2736 * It is recommended to have at least 512MB, with a minimum of 128MB for
2737 * constrained environment).
2739 * When such a situation is detected - Reschedule napi
2741 static void check_for_empty_rx_ring(struct ena_adapter
*adapter
)
2743 struct ena_ring
*rx_ring
;
2744 int i
, refill_required
;
2746 if (!test_bit(ENA_FLAG_DEV_UP
, &adapter
->flags
))
2749 if (test_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
))
2752 for (i
= 0; i
< adapter
->num_queues
; i
++) {
2753 rx_ring
= &adapter
->rx_ring
[i
];
2756 ena_com_sq_empty_space(rx_ring
->ena_com_io_sq
);
2757 if (unlikely(refill_required
== (rx_ring
->ring_size
- 1))) {
2758 rx_ring
->empty_rx_queue
++;
2760 if (rx_ring
->empty_rx_queue
>= EMPTY_RX_REFILL
) {
2761 u64_stats_update_begin(&rx_ring
->syncp
);
2762 rx_ring
->rx_stats
.empty_rx_ring
++;
2763 u64_stats_update_end(&rx_ring
->syncp
);
2765 netif_err(adapter
, drv
, adapter
->netdev
,
2766 "trigger refill for ring %d\n", i
);
2768 napi_schedule(rx_ring
->napi
);
2769 rx_ring
->empty_rx_queue
= 0;
2772 rx_ring
->empty_rx_queue
= 0;
2777 /* Check for keep alive expiration */
2778 static void check_for_missing_keep_alive(struct ena_adapter
*adapter
)
2780 unsigned long keep_alive_expired
;
2782 if (!adapter
->wd_state
)
2785 if (adapter
->keep_alive_timeout
== ENA_HW_HINTS_NO_TIMEOUT
)
2788 keep_alive_expired
= round_jiffies(adapter
->last_keep_alive_jiffies
+
2789 adapter
->keep_alive_timeout
);
2790 if (unlikely(time_is_before_jiffies(keep_alive_expired
))) {
2791 netif_err(adapter
, drv
, adapter
->netdev
,
2792 "Keep alive watchdog timeout.\n");
2793 u64_stats_update_begin(&adapter
->syncp
);
2794 adapter
->dev_stats
.wd_expired
++;
2795 u64_stats_update_end(&adapter
->syncp
);
2796 adapter
->reset_reason
= ENA_REGS_RESET_KEEP_ALIVE_TO
;
2797 set_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
);
2801 static void check_for_admin_com_state(struct ena_adapter
*adapter
)
2803 if (unlikely(!ena_com_get_admin_running_state(adapter
->ena_dev
))) {
2804 netif_err(adapter
, drv
, adapter
->netdev
,
2805 "ENA admin queue is not in running state!\n");
2806 u64_stats_update_begin(&adapter
->syncp
);
2807 adapter
->dev_stats
.admin_q_pause
++;
2808 u64_stats_update_end(&adapter
->syncp
);
2809 adapter
->reset_reason
= ENA_REGS_RESET_ADMIN_TO
;
2810 set_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
);
2814 static void ena_update_hints(struct ena_adapter
*adapter
,
2815 struct ena_admin_ena_hw_hints
*hints
)
2817 struct net_device
*netdev
= adapter
->netdev
;
2819 if (hints
->admin_completion_tx_timeout
)
2820 adapter
->ena_dev
->admin_queue
.completion_timeout
=
2821 hints
->admin_completion_tx_timeout
* 1000;
2823 if (hints
->mmio_read_timeout
)
2824 /* convert to usec */
2825 adapter
->ena_dev
->mmio_read
.reg_read_to
=
2826 hints
->mmio_read_timeout
* 1000;
2828 if (hints
->missed_tx_completion_count_threshold_to_reset
)
2829 adapter
->missing_tx_completion_threshold
=
2830 hints
->missed_tx_completion_count_threshold_to_reset
;
2832 if (hints
->missing_tx_completion_timeout
) {
2833 if (hints
->missing_tx_completion_timeout
== ENA_HW_HINTS_NO_TIMEOUT
)
2834 adapter
->missing_tx_completion_to
= ENA_HW_HINTS_NO_TIMEOUT
;
2836 adapter
->missing_tx_completion_to
=
2837 msecs_to_jiffies(hints
->missing_tx_completion_timeout
);
2840 if (hints
->netdev_wd_timeout
)
2841 netdev
->watchdog_timeo
= msecs_to_jiffies(hints
->netdev_wd_timeout
);
2843 if (hints
->driver_watchdog_timeout
) {
2844 if (hints
->driver_watchdog_timeout
== ENA_HW_HINTS_NO_TIMEOUT
)
2845 adapter
->keep_alive_timeout
= ENA_HW_HINTS_NO_TIMEOUT
;
2847 adapter
->keep_alive_timeout
=
2848 msecs_to_jiffies(hints
->driver_watchdog_timeout
);
2852 static void ena_update_host_info(struct ena_admin_host_info
*host_info
,
2853 struct net_device
*netdev
)
2855 host_info
->supported_network_features
[0] =
2856 netdev
->features
& GENMASK_ULL(31, 0);
2857 host_info
->supported_network_features
[1] =
2858 (netdev
->features
& GENMASK_ULL(63, 32)) >> 32;
2861 static void ena_timer_service(unsigned long data
)
2863 struct ena_adapter
*adapter
= (struct ena_adapter
*)data
;
2864 u8
*debug_area
= adapter
->ena_dev
->host_attr
.debug_area_virt_addr
;
2865 struct ena_admin_host_info
*host_info
=
2866 adapter
->ena_dev
->host_attr
.host_info
;
2868 check_for_missing_keep_alive(adapter
);
2870 check_for_admin_com_state(adapter
);
2872 check_for_missing_tx_completions(adapter
);
2874 check_for_empty_rx_ring(adapter
);
2877 ena_dump_stats_to_buf(adapter
, debug_area
);
2880 ena_update_host_info(host_info
, adapter
->netdev
);
2882 if (unlikely(test_bit(ENA_FLAG_TRIGGER_RESET
, &adapter
->flags
))) {
2883 netif_err(adapter
, drv
, adapter
->netdev
,
2884 "Trigger reset is on\n");
2885 ena_dump_stats_to_dmesg(adapter
);
2886 queue_work(ena_wq
, &adapter
->reset_task
);
2890 /* Reset the timer */
2891 mod_timer(&adapter
->timer_service
, jiffies
+ HZ
);
2894 static int ena_calc_io_queue_num(struct pci_dev
*pdev
,
2895 struct ena_com_dev
*ena_dev
,
2896 struct ena_com_dev_get_features_ctx
*get_feat_ctx
)
2898 int io_sq_num
, io_queue_num
;
2900 /* In case of LLQ use the llq number in the get feature cmd */
2901 if (ena_dev
->tx_mem_queue_type
== ENA_ADMIN_PLACEMENT_POLICY_DEV
) {
2902 io_sq_num
= get_feat_ctx
->max_queues
.max_llq_num
;
2904 if (io_sq_num
== 0) {
2906 "Trying to use LLQ but llq_num is 0. Fall back into regular queues\n");
2908 ena_dev
->tx_mem_queue_type
=
2909 ENA_ADMIN_PLACEMENT_POLICY_HOST
;
2910 io_sq_num
= get_feat_ctx
->max_queues
.max_sq_num
;
2913 io_sq_num
= get_feat_ctx
->max_queues
.max_sq_num
;
2916 io_queue_num
= min_t(int, num_online_cpus(), ENA_MAX_NUM_IO_QUEUES
);
2917 io_queue_num
= min_t(int, io_queue_num
, io_sq_num
);
2918 io_queue_num
= min_t(int, io_queue_num
,
2919 get_feat_ctx
->max_queues
.max_cq_num
);
2920 /* 1 IRQ for for mgmnt and 1 IRQs for each IO direction */
2921 io_queue_num
= min_t(int, io_queue_num
, pci_msix_vec_count(pdev
) - 1);
2922 if (unlikely(!io_queue_num
)) {
2923 dev_err(&pdev
->dev
, "The device doesn't have io queues\n");
2927 return io_queue_num
;
2930 static void ena_set_push_mode(struct pci_dev
*pdev
, struct ena_com_dev
*ena_dev
,
2931 struct ena_com_dev_get_features_ctx
*get_feat_ctx
)
2935 has_mem_bar
= pci_select_bars(pdev
, IORESOURCE_MEM
) & BIT(ENA_MEM_BAR
);
2937 /* Enable push mode if device supports LLQ */
2938 if (has_mem_bar
&& (get_feat_ctx
->max_queues
.max_llq_num
> 0))
2939 ena_dev
->tx_mem_queue_type
= ENA_ADMIN_PLACEMENT_POLICY_DEV
;
2941 ena_dev
->tx_mem_queue_type
= ENA_ADMIN_PLACEMENT_POLICY_HOST
;
2944 static void ena_set_dev_offloads(struct ena_com_dev_get_features_ctx
*feat
,
2945 struct net_device
*netdev
)
2947 netdev_features_t dev_features
= 0;
2949 /* Set offload features */
2950 if (feat
->offload
.tx
&
2951 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK
)
2952 dev_features
|= NETIF_F_IP_CSUM
;
2954 if (feat
->offload
.tx
&
2955 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK
)
2956 dev_features
|= NETIF_F_IPV6_CSUM
;
2958 if (feat
->offload
.tx
& ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK
)
2959 dev_features
|= NETIF_F_TSO
;
2961 if (feat
->offload
.tx
& ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_MASK
)
2962 dev_features
|= NETIF_F_TSO6
;
2964 if (feat
->offload
.tx
& ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_ECN_MASK
)
2965 dev_features
|= NETIF_F_TSO_ECN
;
2967 if (feat
->offload
.rx_supported
&
2968 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK
)
2969 dev_features
|= NETIF_F_RXCSUM
;
2971 if (feat
->offload
.rx_supported
&
2972 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK
)
2973 dev_features
|= NETIF_F_RXCSUM
;
2981 netdev
->hw_features
|= netdev
->features
;
2982 netdev
->vlan_features
|= netdev
->features
;
2985 static void ena_set_conf_feat_params(struct ena_adapter
*adapter
,
2986 struct ena_com_dev_get_features_ctx
*feat
)
2988 struct net_device
*netdev
= adapter
->netdev
;
2990 /* Copy mac address */
2991 if (!is_valid_ether_addr(feat
->dev_attr
.mac_addr
)) {
2992 eth_hw_addr_random(netdev
);
2993 ether_addr_copy(adapter
->mac_addr
, netdev
->dev_addr
);
2995 ether_addr_copy(adapter
->mac_addr
, feat
->dev_attr
.mac_addr
);
2996 ether_addr_copy(netdev
->dev_addr
, adapter
->mac_addr
);
2999 /* Set offload features */
3000 ena_set_dev_offloads(feat
, netdev
);
3002 adapter
->max_mtu
= feat
->dev_attr
.max_mtu
;
3003 netdev
->max_mtu
= adapter
->max_mtu
;
3004 netdev
->min_mtu
= ENA_MIN_MTU
;
3007 static int ena_rss_init_default(struct ena_adapter
*adapter
)
3009 struct ena_com_dev
*ena_dev
= adapter
->ena_dev
;
3010 struct device
*dev
= &adapter
->pdev
->dev
;
3014 rc
= ena_com_rss_init(ena_dev
, ENA_RX_RSS_TABLE_LOG_SIZE
);
3016 dev_err(dev
, "Cannot init indirect table\n");
3020 for (i
= 0; i
< ENA_RX_RSS_TABLE_SIZE
; i
++) {
3021 val
= ethtool_rxfh_indir_default(i
, adapter
->num_queues
);
3022 rc
= ena_com_indirect_table_fill_entry(ena_dev
, i
,
3023 ENA_IO_RXQ_IDX(val
));
3024 if (unlikely(rc
&& (rc
!= -EOPNOTSUPP
))) {
3025 dev_err(dev
, "Cannot fill indirect table\n");
3026 goto err_fill_indir
;
3030 rc
= ena_com_fill_hash_function(ena_dev
, ENA_ADMIN_CRC32
, NULL
,
3031 ENA_HASH_KEY_SIZE
, 0xFFFFFFFF);
3032 if (unlikely(rc
&& (rc
!= -EOPNOTSUPP
))) {
3033 dev_err(dev
, "Cannot fill hash function\n");
3034 goto err_fill_indir
;
3037 rc
= ena_com_set_default_hash_ctrl(ena_dev
);
3038 if (unlikely(rc
&& (rc
!= -EOPNOTSUPP
))) {
3039 dev_err(dev
, "Cannot fill hash control\n");
3040 goto err_fill_indir
;
3046 ena_com_rss_destroy(ena_dev
);
3052 static void ena_release_bars(struct ena_com_dev
*ena_dev
, struct pci_dev
*pdev
)
3056 if (ena_dev
->mem_bar
)
3057 devm_iounmap(&pdev
->dev
, ena_dev
->mem_bar
);
3059 devm_iounmap(&pdev
->dev
, ena_dev
->reg_bar
);
3061 release_bars
= pci_select_bars(pdev
, IORESOURCE_MEM
) & ENA_BAR_MASK
;
3062 pci_release_selected_regions(pdev
, release_bars
);
3065 static int ena_calc_queue_size(struct pci_dev
*pdev
,
3066 struct ena_com_dev
*ena_dev
,
3067 u16
*max_tx_sgl_size
,
3068 u16
*max_rx_sgl_size
,
3069 struct ena_com_dev_get_features_ctx
*get_feat_ctx
)
3071 u32 queue_size
= ENA_DEFAULT_RING_SIZE
;
3073 queue_size
= min_t(u32
, queue_size
,
3074 get_feat_ctx
->max_queues
.max_cq_depth
);
3075 queue_size
= min_t(u32
, queue_size
,
3076 get_feat_ctx
->max_queues
.max_sq_depth
);
3078 if (ena_dev
->tx_mem_queue_type
== ENA_ADMIN_PLACEMENT_POLICY_DEV
)
3079 queue_size
= min_t(u32
, queue_size
,
3080 get_feat_ctx
->max_queues
.max_llq_depth
);
3082 queue_size
= rounddown_pow_of_two(queue_size
);
3084 if (unlikely(!queue_size
)) {
3085 dev_err(&pdev
->dev
, "Invalid queue size\n");
3089 *max_tx_sgl_size
= min_t(u16
, ENA_PKT_MAX_BUFS
,
3090 get_feat_ctx
->max_queues
.max_packet_tx_descs
);
3091 *max_rx_sgl_size
= min_t(u16
, ENA_PKT_MAX_BUFS
,
3092 get_feat_ctx
->max_queues
.max_packet_rx_descs
);
3097 /* ena_probe - Device Initialization Routine
3098 * @pdev: PCI device information struct
3099 * @ent: entry in ena_pci_tbl
3101 * Returns 0 on success, negative on failure
3103 * ena_probe initializes an adapter identified by a pci_dev structure.
3104 * The OS initialization, configuring of the adapter private structure,
3105 * and a hardware reset occur.
3107 static int ena_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
3109 struct ena_com_dev_get_features_ctx get_feat_ctx
;
3110 static int version_printed
;
3111 struct net_device
*netdev
;
3112 struct ena_adapter
*adapter
;
3113 struct ena_com_dev
*ena_dev
= NULL
;
3114 static int adapters_found
;
3115 int io_queue_num
, bars
, rc
;
3117 u16 tx_sgl_size
= 0;
3118 u16 rx_sgl_size
= 0;
3121 dev_dbg(&pdev
->dev
, "%s\n", __func__
);
3123 if (version_printed
++ == 0)
3124 dev_info(&pdev
->dev
, "%s", version
);
3126 rc
= pci_enable_device_mem(pdev
);
3128 dev_err(&pdev
->dev
, "pci_enable_device_mem() failed!\n");
3132 pci_set_master(pdev
);
3134 ena_dev
= vzalloc(sizeof(*ena_dev
));
3137 goto err_disable_device
;
3140 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
) & ENA_BAR_MASK
;
3141 rc
= pci_request_selected_regions(pdev
, bars
, DRV_MODULE_NAME
);
3143 dev_err(&pdev
->dev
, "pci_request_selected_regions failed %d\n",
3145 goto err_free_ena_dev
;
3148 ena_dev
->reg_bar
= devm_ioremap(&pdev
->dev
,
3149 pci_resource_start(pdev
, ENA_REG_BAR
),
3150 pci_resource_len(pdev
, ENA_REG_BAR
));
3151 if (!ena_dev
->reg_bar
) {
3152 dev_err(&pdev
->dev
, "failed to remap regs bar\n");
3154 goto err_free_region
;
3157 ena_dev
->dmadev
= &pdev
->dev
;
3159 rc
= ena_device_init(ena_dev
, pdev
, &get_feat_ctx
, &wd_state
);
3161 dev_err(&pdev
->dev
, "ena device init failed\n");
3164 goto err_free_region
;
3167 ena_set_push_mode(pdev
, ena_dev
, &get_feat_ctx
);
3169 if (ena_dev
->tx_mem_queue_type
== ENA_ADMIN_PLACEMENT_POLICY_DEV
) {
3170 ena_dev
->mem_bar
= devm_ioremap_wc(&pdev
->dev
,
3171 pci_resource_start(pdev
, ENA_MEM_BAR
),
3172 pci_resource_len(pdev
, ENA_MEM_BAR
));
3173 if (!ena_dev
->mem_bar
) {
3175 goto err_device_destroy
;
3179 /* initial Tx interrupt delay, Assumes 1 usec granularity.
3180 * Updated during device initialization with the real granularity
3182 ena_dev
->intr_moder_tx_interval
= ENA_INTR_INITIAL_TX_INTERVAL_USECS
;
3183 io_queue_num
= ena_calc_io_queue_num(pdev
, ena_dev
, &get_feat_ctx
);
3184 queue_size
= ena_calc_queue_size(pdev
, ena_dev
, &tx_sgl_size
,
3185 &rx_sgl_size
, &get_feat_ctx
);
3186 if ((queue_size
<= 0) || (io_queue_num
<= 0)) {
3188 goto err_device_destroy
;
3191 dev_info(&pdev
->dev
, "creating %d io queues. queue size: %d\n",
3192 io_queue_num
, queue_size
);
3194 /* dev zeroed in init_etherdev */
3195 netdev
= alloc_etherdev_mq(sizeof(struct ena_adapter
), io_queue_num
);
3197 dev_err(&pdev
->dev
, "alloc_etherdev_mq failed\n");
3199 goto err_device_destroy
;
3202 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
3204 adapter
= netdev_priv(netdev
);
3205 pci_set_drvdata(pdev
, adapter
);
3207 adapter
->ena_dev
= ena_dev
;
3208 adapter
->netdev
= netdev
;
3209 adapter
->pdev
= pdev
;
3211 ena_set_conf_feat_params(adapter
, &get_feat_ctx
);
3213 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
3214 adapter
->reset_reason
= ENA_REGS_RESET_NORMAL
;
3216 adapter
->tx_ring_size
= queue_size
;
3217 adapter
->rx_ring_size
= queue_size
;
3219 adapter
->max_tx_sgl_size
= tx_sgl_size
;
3220 adapter
->max_rx_sgl_size
= rx_sgl_size
;
3222 adapter
->num_queues
= io_queue_num
;
3223 adapter
->last_monitored_tx_qid
= 0;
3225 adapter
->rx_copybreak
= ENA_DEFAULT_RX_COPYBREAK
;
3226 adapter
->wd_state
= wd_state
;
3228 snprintf(adapter
->name
, ENA_NAME_MAX_LEN
, "ena_%d", adapters_found
);
3230 rc
= ena_com_init_interrupt_moderation(adapter
->ena_dev
);
3233 "Failed to query interrupt moderation feature\n");
3234 goto err_netdev_destroy
;
3236 ena_init_io_rings(adapter
);
3238 netdev
->netdev_ops
= &ena_netdev_ops
;
3239 netdev
->watchdog_timeo
= TX_TIMEOUT
;
3240 ena_set_ethtool_ops(netdev
);
3242 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
3244 u64_stats_init(&adapter
->syncp
);
3246 rc
= ena_enable_msix_and_set_admin_interrupts(adapter
, io_queue_num
);
3249 "Failed to enable and set the admin interrupts\n");
3250 goto err_worker_destroy
;
3252 rc
= ena_rss_init_default(adapter
);
3253 if (rc
&& (rc
!= -EOPNOTSUPP
)) {
3254 dev_err(&pdev
->dev
, "Cannot init RSS rc: %d\n", rc
);
3258 ena_config_debug_area(adapter
);
3260 memcpy(adapter
->netdev
->perm_addr
, adapter
->mac_addr
, netdev
->addr_len
);
3262 netif_carrier_off(netdev
);
3264 rc
= register_netdev(netdev
);
3266 dev_err(&pdev
->dev
, "Cannot register net device\n");
3270 INIT_WORK(&adapter
->suspend_io_task
, ena_device_io_suspend
);
3271 INIT_WORK(&adapter
->resume_io_task
, ena_device_io_resume
);
3272 INIT_WORK(&adapter
->reset_task
, ena_fw_reset_device
);
3274 adapter
->last_keep_alive_jiffies
= jiffies
;
3275 adapter
->keep_alive_timeout
= ENA_DEVICE_KALIVE_TIMEOUT
;
3276 adapter
->missing_tx_completion_to
= TX_TIMEOUT
;
3277 adapter
->missing_tx_completion_threshold
= MAX_NUM_OF_TIMEOUTED_PACKETS
;
3279 ena_update_hints(adapter
, &get_feat_ctx
.hw_hints
);
3281 setup_timer(&adapter
->timer_service
, ena_timer_service
,
3282 (unsigned long)adapter
);
3283 mod_timer(&adapter
->timer_service
, round_jiffies(jiffies
+ HZ
));
3285 dev_info(&pdev
->dev
, "%s found at mem %lx, mac addr %pM Queues %d\n",
3286 DEVICE_NAME
, (long)pci_resource_start(pdev
, 0),
3287 netdev
->dev_addr
, io_queue_num
);
3289 set_bit(ENA_FLAG_DEVICE_RUNNING
, &adapter
->flags
);
3296 ena_com_delete_debug_area(ena_dev
);
3297 ena_com_rss_destroy(ena_dev
);
3299 ena_com_dev_reset(ena_dev
, ENA_REGS_RESET_INIT_ERR
);
3300 ena_free_mgmnt_irq(adapter
);
3301 ena_disable_msix(adapter
);
3303 ena_com_destroy_interrupt_moderation(ena_dev
);
3304 del_timer(&adapter
->timer_service
);
3305 cancel_work_sync(&adapter
->suspend_io_task
);
3306 cancel_work_sync(&adapter
->resume_io_task
);
3308 free_netdev(netdev
);
3310 ena_com_delete_host_info(ena_dev
);
3311 ena_com_admin_destroy(ena_dev
);
3313 ena_release_bars(ena_dev
, pdev
);
3317 pci_disable_device(pdev
);
3321 /*****************************************************************************/
3322 static int ena_sriov_configure(struct pci_dev
*dev
, int numvfs
)
3327 rc
= pci_enable_sriov(dev
, numvfs
);
3330 "pci_enable_sriov failed to enable: %d vfs with the error: %d\n",
3339 pci_disable_sriov(dev
);
3346 /*****************************************************************************/
3347 /*****************************************************************************/
3349 /* ena_remove - Device Removal Routine
3350 * @pdev: PCI device information struct
3352 * ena_remove is called by the PCI subsystem to alert the driver
3353 * that it should release a PCI device.
3355 static void ena_remove(struct pci_dev
*pdev
)
3357 struct ena_adapter
*adapter
= pci_get_drvdata(pdev
);
3358 struct ena_com_dev
*ena_dev
;
3359 struct net_device
*netdev
;
3361 ena_dev
= adapter
->ena_dev
;
3362 netdev
= adapter
->netdev
;
3364 #ifdef CONFIG_RFS_ACCEL
3365 if ((adapter
->msix_vecs
>= 1) && (netdev
->rx_cpu_rmap
)) {
3366 free_irq_cpu_rmap(netdev
->rx_cpu_rmap
);
3367 netdev
->rx_cpu_rmap
= NULL
;
3369 #endif /* CONFIG_RFS_ACCEL */
3371 unregister_netdev(netdev
);
3372 del_timer_sync(&adapter
->timer_service
);
3374 cancel_work_sync(&adapter
->reset_task
);
3376 cancel_work_sync(&adapter
->suspend_io_task
);
3378 cancel_work_sync(&adapter
->resume_io_task
);
3380 /* Reset the device only if the device is running. */
3381 if (test_bit(ENA_FLAG_DEVICE_RUNNING
, &adapter
->flags
))
3382 ena_com_dev_reset(ena_dev
, adapter
->reset_reason
);
3384 ena_free_mgmnt_irq(adapter
);
3386 ena_disable_msix(adapter
);
3388 free_netdev(netdev
);
3390 ena_com_mmio_reg_read_request_destroy(ena_dev
);
3392 ena_com_abort_admin_commands(ena_dev
);
3394 ena_com_wait_for_abort_completion(ena_dev
);
3396 ena_com_admin_destroy(ena_dev
);
3398 ena_com_rss_destroy(ena_dev
);
3400 ena_com_delete_debug_area(ena_dev
);
3402 ena_com_delete_host_info(ena_dev
);
3404 ena_release_bars(ena_dev
, pdev
);
3406 pci_disable_device(pdev
);
3408 ena_com_destroy_interrupt_moderation(ena_dev
);
3413 static struct pci_driver ena_pci_driver
= {
3414 .name
= DRV_MODULE_NAME
,
3415 .id_table
= ena_pci_tbl
,
3417 .remove
= ena_remove
,
3418 .sriov_configure
= ena_sriov_configure
,
3421 static int __init
ena_init(void)
3423 pr_info("%s", version
);
3425 ena_wq
= create_singlethread_workqueue(DRV_MODULE_NAME
);
3427 pr_err("Failed to create workqueue\n");
3431 return pci_register_driver(&ena_pci_driver
);
3434 static void __exit
ena_cleanup(void)
3436 pci_unregister_driver(&ena_pci_driver
);
3439 destroy_workqueue(ena_wq
);
3444 /******************************************************************************
3445 ******************************** AENQ Handlers *******************************
3446 *****************************************************************************/
3447 /* ena_update_on_link_change:
3448 * Notify the network interface about the change in link status
3450 static void ena_update_on_link_change(void *adapter_data
,
3451 struct ena_admin_aenq_entry
*aenq_e
)
3453 struct ena_adapter
*adapter
= (struct ena_adapter
*)adapter_data
;
3454 struct ena_admin_aenq_link_change_desc
*aenq_desc
=
3455 (struct ena_admin_aenq_link_change_desc
*)aenq_e
;
3456 int status
= aenq_desc
->flags
&
3457 ENA_ADMIN_AENQ_LINK_CHANGE_DESC_LINK_STATUS_MASK
;
3460 netdev_dbg(adapter
->netdev
, "%s\n", __func__
);
3461 set_bit(ENA_FLAG_LINK_UP
, &adapter
->flags
);
3462 netif_carrier_on(adapter
->netdev
);
3464 clear_bit(ENA_FLAG_LINK_UP
, &adapter
->flags
);
3465 netif_carrier_off(adapter
->netdev
);
3469 static void ena_keep_alive_wd(void *adapter_data
,
3470 struct ena_admin_aenq_entry
*aenq_e
)
3472 struct ena_adapter
*adapter
= (struct ena_adapter
*)adapter_data
;
3474 adapter
->last_keep_alive_jiffies
= jiffies
;
3477 static void ena_notification(void *adapter_data
,
3478 struct ena_admin_aenq_entry
*aenq_e
)
3480 struct ena_adapter
*adapter
= (struct ena_adapter
*)adapter_data
;
3481 struct ena_admin_ena_hw_hints
*hints
;
3483 WARN(aenq_e
->aenq_common_desc
.group
!= ENA_ADMIN_NOTIFICATION
,
3484 "Invalid group(%x) expected %x\n",
3485 aenq_e
->aenq_common_desc
.group
,
3486 ENA_ADMIN_NOTIFICATION
);
3488 switch (aenq_e
->aenq_common_desc
.syndrom
) {
3489 case ENA_ADMIN_SUSPEND
:
3490 /* Suspend just the IO queues.
3491 * We deliberately don't suspend admin so the timer and
3492 * the keep_alive events should remain.
3494 queue_work(ena_wq
, &adapter
->suspend_io_task
);
3496 case ENA_ADMIN_RESUME
:
3497 queue_work(ena_wq
, &adapter
->resume_io_task
);
3499 case ENA_ADMIN_UPDATE_HINTS
:
3500 hints
= (struct ena_admin_ena_hw_hints
*)
3501 (&aenq_e
->inline_data_w4
);
3502 ena_update_hints(adapter
, hints
);
3505 netif_err(adapter
, drv
, adapter
->netdev
,
3506 "Invalid aenq notification link state %d\n",
3507 aenq_e
->aenq_common_desc
.syndrom
);
3511 /* This handler will called for unknown event group or unimplemented handlers*/
3512 static void unimplemented_aenq_handler(void *data
,
3513 struct ena_admin_aenq_entry
*aenq_e
)
3515 struct ena_adapter
*adapter
= (struct ena_adapter
*)data
;
3517 netif_err(adapter
, drv
, adapter
->netdev
,
3518 "Unknown event was received or event with unimplemented handler\n");
3521 static struct ena_aenq_handlers aenq_handlers
= {
3523 [ENA_ADMIN_LINK_CHANGE
] = ena_update_on_link_change
,
3524 [ENA_ADMIN_NOTIFICATION
] = ena_notification
,
3525 [ENA_ADMIN_KEEP_ALIVE
] = ena_keep_alive_wd
,
3527 .unimplemented_handler
= unimplemented_aenq_handler
3530 module_init(ena_init
);
3531 module_exit(ena_cleanup
);