1 /*******************************************************************************
3 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
4 * Copyright(c) 2013 - 2016 Intel Corporation.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 ******************************************************************************/
28 #include "i40e_prototype.h"
29 static int i40evf_setup_all_tx_resources(struct i40evf_adapter
*adapter
);
30 static int i40evf_setup_all_rx_resources(struct i40evf_adapter
*adapter
);
31 static int i40evf_close(struct net_device
*netdev
);
33 char i40evf_driver_name
[] = "i40evf";
34 static const char i40evf_driver_string
[] =
35 "Intel(R) 40-10 Gigabit Virtual Function Network Driver";
39 #define DRV_VERSION_MAJOR 1
40 #define DRV_VERSION_MINOR 4
41 #define DRV_VERSION_BUILD 9
42 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
43 __stringify(DRV_VERSION_MINOR) "." \
44 __stringify(DRV_VERSION_BUILD) \
46 const char i40evf_driver_version
[] = DRV_VERSION
;
47 static const char i40evf_copyright
[] =
48 "Copyright (c) 2013 - 2015 Intel Corporation.";
50 /* i40evf_pci_tbl - PCI Device ID Table
52 * Wildcard entries (PCI_ANY_ID) should come last
53 * Last entry must be all 0s
55 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
56 * Class, Class Mask, private data (not used) }
58 static const struct pci_device_id i40evf_pci_tbl
[] = {
59 {PCI_VDEVICE(INTEL
, I40E_DEV_ID_VF
), 0},
60 {PCI_VDEVICE(INTEL
, I40E_DEV_ID_X722_VF
), 0},
61 /* required last entry */
65 MODULE_DEVICE_TABLE(pci
, i40evf_pci_tbl
);
67 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
68 MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver");
69 MODULE_LICENSE("GPL");
70 MODULE_VERSION(DRV_VERSION
);
72 static struct workqueue_struct
*i40evf_wq
;
75 * i40evf_allocate_dma_mem_d - OS specific memory alloc for shared code
76 * @hw: pointer to the HW structure
77 * @mem: ptr to mem struct to fill out
78 * @size: size of memory requested
79 * @alignment: what to align the allocation to
81 i40e_status
i40evf_allocate_dma_mem_d(struct i40e_hw
*hw
,
82 struct i40e_dma_mem
*mem
,
83 u64 size
, u32 alignment
)
85 struct i40evf_adapter
*adapter
= (struct i40evf_adapter
*)hw
->back
;
88 return I40E_ERR_PARAM
;
90 mem
->size
= ALIGN(size
, alignment
);
91 mem
->va
= dma_alloc_coherent(&adapter
->pdev
->dev
, mem
->size
,
92 (dma_addr_t
*)&mem
->pa
, GFP_KERNEL
);
96 return I40E_ERR_NO_MEMORY
;
100 * i40evf_free_dma_mem_d - OS specific memory free for shared code
101 * @hw: pointer to the HW structure
102 * @mem: ptr to mem struct to free
104 i40e_status
i40evf_free_dma_mem_d(struct i40e_hw
*hw
, struct i40e_dma_mem
*mem
)
106 struct i40evf_adapter
*adapter
= (struct i40evf_adapter
*)hw
->back
;
108 if (!mem
|| !mem
->va
)
109 return I40E_ERR_PARAM
;
110 dma_free_coherent(&adapter
->pdev
->dev
, mem
->size
,
111 mem
->va
, (dma_addr_t
)mem
->pa
);
116 * i40evf_allocate_virt_mem_d - OS specific memory alloc for shared code
117 * @hw: pointer to the HW structure
118 * @mem: ptr to mem struct to fill out
119 * @size: size of memory requested
121 i40e_status
i40evf_allocate_virt_mem_d(struct i40e_hw
*hw
,
122 struct i40e_virt_mem
*mem
, u32 size
)
125 return I40E_ERR_PARAM
;
128 mem
->va
= kzalloc(size
, GFP_KERNEL
);
133 return I40E_ERR_NO_MEMORY
;
137 * i40evf_free_virt_mem_d - OS specific memory free for shared code
138 * @hw: pointer to the HW structure
139 * @mem: ptr to mem struct to free
141 i40e_status
i40evf_free_virt_mem_d(struct i40e_hw
*hw
,
142 struct i40e_virt_mem
*mem
)
145 return I40E_ERR_PARAM
;
147 /* it's ok to kfree a NULL pointer */
154 * i40evf_debug_d - OS dependent version of debug printing
155 * @hw: pointer to the HW structure
156 * @mask: debug level mask
157 * @fmt_str: printf-type format description
159 void i40evf_debug_d(void *hw
, u32 mask
, char *fmt_str
, ...)
164 if (!(mask
& ((struct i40e_hw
*)hw
)->debug_mask
))
167 va_start(argptr
, fmt_str
);
168 vsnprintf(buf
, sizeof(buf
), fmt_str
, argptr
);
171 /* the debug string is already formatted with a newline */
176 * i40evf_tx_timeout - Respond to a Tx Hang
177 * @netdev: network interface device structure
179 static void i40evf_tx_timeout(struct net_device
*netdev
)
181 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
183 adapter
->tx_timeout_count
++;
184 if (!(adapter
->flags
& (I40EVF_FLAG_RESET_PENDING
|
185 I40EVF_FLAG_RESET_NEEDED
))) {
186 adapter
->flags
|= I40EVF_FLAG_RESET_NEEDED
;
187 queue_work(i40evf_wq
, &adapter
->reset_task
);
192 * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC
193 * @adapter: board private structure
195 static void i40evf_misc_irq_disable(struct i40evf_adapter
*adapter
)
197 struct i40e_hw
*hw
= &adapter
->hw
;
199 wr32(hw
, I40E_VFINT_DYN_CTL01
, 0);
202 rd32(hw
, I40E_VFGEN_RSTAT
);
204 synchronize_irq(adapter
->msix_entries
[0].vector
);
208 * i40evf_misc_irq_enable - Enable default interrupt generation settings
209 * @adapter: board private structure
211 static void i40evf_misc_irq_enable(struct i40evf_adapter
*adapter
)
213 struct i40e_hw
*hw
= &adapter
->hw
;
215 wr32(hw
, I40E_VFINT_DYN_CTL01
, I40E_VFINT_DYN_CTL01_INTENA_MASK
|
216 I40E_VFINT_DYN_CTL01_ITR_INDX_MASK
);
217 wr32(hw
, I40E_VFINT_ICR0_ENA1
, I40E_VFINT_ICR0_ENA1_ADMINQ_MASK
);
220 rd32(hw
, I40E_VFGEN_RSTAT
);
224 * i40evf_irq_disable - Mask off interrupt generation on the NIC
225 * @adapter: board private structure
227 static void i40evf_irq_disable(struct i40evf_adapter
*adapter
)
230 struct i40e_hw
*hw
= &adapter
->hw
;
232 if (!adapter
->msix_entries
)
235 for (i
= 1; i
< adapter
->num_msix_vectors
; i
++) {
236 wr32(hw
, I40E_VFINT_DYN_CTLN1(i
- 1), 0);
237 synchronize_irq(adapter
->msix_entries
[i
].vector
);
240 rd32(hw
, I40E_VFGEN_RSTAT
);
244 * i40evf_irq_enable_queues - Enable interrupt for specified queues
245 * @adapter: board private structure
246 * @mask: bitmap of queues to enable
248 void i40evf_irq_enable_queues(struct i40evf_adapter
*adapter
, u32 mask
)
250 struct i40e_hw
*hw
= &adapter
->hw
;
253 for (i
= 1; i
< adapter
->num_msix_vectors
; i
++) {
254 if (mask
& BIT(i
- 1)) {
255 wr32(hw
, I40E_VFINT_DYN_CTLN1(i
- 1),
256 I40E_VFINT_DYN_CTLN1_INTENA_MASK
|
257 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK
|
258 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK
);
264 * i40evf_fire_sw_int - Generate SW interrupt for specified vectors
265 * @adapter: board private structure
266 * @mask: bitmap of vectors to trigger
268 static void i40evf_fire_sw_int(struct i40evf_adapter
*adapter
, u32 mask
)
270 struct i40e_hw
*hw
= &adapter
->hw
;
275 dyn_ctl
= rd32(hw
, I40E_VFINT_DYN_CTL01
);
276 dyn_ctl
|= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK
|
277 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK
|
278 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK
;
279 wr32(hw
, I40E_VFINT_DYN_CTL01
, dyn_ctl
);
281 for (i
= 1; i
< adapter
->num_msix_vectors
; i
++) {
283 dyn_ctl
= rd32(hw
, I40E_VFINT_DYN_CTLN1(i
- 1));
284 dyn_ctl
|= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK
|
285 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK
|
286 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK
;
287 wr32(hw
, I40E_VFINT_DYN_CTLN1(i
- 1), dyn_ctl
);
293 * i40evf_irq_enable - Enable default interrupt generation settings
294 * @adapter: board private structure
295 * @flush: boolean value whether to run rd32()
297 void i40evf_irq_enable(struct i40evf_adapter
*adapter
, bool flush
)
299 struct i40e_hw
*hw
= &adapter
->hw
;
301 i40evf_misc_irq_enable(adapter
);
302 i40evf_irq_enable_queues(adapter
, ~0);
305 rd32(hw
, I40E_VFGEN_RSTAT
);
309 * i40evf_msix_aq - Interrupt handler for vector 0
310 * @irq: interrupt number
311 * @data: pointer to netdev
313 static irqreturn_t
i40evf_msix_aq(int irq
, void *data
)
315 struct net_device
*netdev
= data
;
316 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
317 struct i40e_hw
*hw
= &adapter
->hw
;
320 /* handle non-queue interrupts, these reads clear the registers */
321 val
= rd32(hw
, I40E_VFINT_ICR01
);
322 val
= rd32(hw
, I40E_VFINT_ICR0_ENA1
);
324 val
= rd32(hw
, I40E_VFINT_DYN_CTL01
) |
325 I40E_VFINT_DYN_CTL01_CLEARPBA_MASK
;
326 wr32(hw
, I40E_VFINT_DYN_CTL01
, val
);
328 /* schedule work on the private workqueue */
329 schedule_work(&adapter
->adminq_task
);
335 * i40evf_msix_clean_rings - MSIX mode Interrupt Handler
336 * @irq: interrupt number
337 * @data: pointer to a q_vector
339 static irqreturn_t
i40evf_msix_clean_rings(int irq
, void *data
)
341 struct i40e_q_vector
*q_vector
= data
;
343 if (!q_vector
->tx
.ring
&& !q_vector
->rx
.ring
)
346 napi_schedule_irqoff(&q_vector
->napi
);
352 * i40evf_map_vector_to_rxq - associate irqs with rx queues
353 * @adapter: board private structure
354 * @v_idx: interrupt number
355 * @r_idx: queue number
358 i40evf_map_vector_to_rxq(struct i40evf_adapter
*adapter
, int v_idx
, int r_idx
)
360 struct i40e_q_vector
*q_vector
= &adapter
->q_vectors
[v_idx
];
361 struct i40e_ring
*rx_ring
= &adapter
->rx_rings
[r_idx
];
363 rx_ring
->q_vector
= q_vector
;
364 rx_ring
->next
= q_vector
->rx
.ring
;
365 rx_ring
->vsi
= &adapter
->vsi
;
366 q_vector
->rx
.ring
= rx_ring
;
367 q_vector
->rx
.count
++;
368 q_vector
->rx
.latency_range
= I40E_LOW_LATENCY
;
369 q_vector
->itr_countdown
= ITR_COUNTDOWN_START
;
373 * i40evf_map_vector_to_txq - associate irqs with tx queues
374 * @adapter: board private structure
375 * @v_idx: interrupt number
376 * @t_idx: queue number
379 i40evf_map_vector_to_txq(struct i40evf_adapter
*adapter
, int v_idx
, int t_idx
)
381 struct i40e_q_vector
*q_vector
= &adapter
->q_vectors
[v_idx
];
382 struct i40e_ring
*tx_ring
= &adapter
->tx_rings
[t_idx
];
384 tx_ring
->q_vector
= q_vector
;
385 tx_ring
->next
= q_vector
->tx
.ring
;
386 tx_ring
->vsi
= &adapter
->vsi
;
387 q_vector
->tx
.ring
= tx_ring
;
388 q_vector
->tx
.count
++;
389 q_vector
->tx
.latency_range
= I40E_LOW_LATENCY
;
390 q_vector
->itr_countdown
= ITR_COUNTDOWN_START
;
391 q_vector
->num_ringpairs
++;
392 q_vector
->ring_mask
|= BIT(t_idx
);
396 * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors
397 * @adapter: board private structure to initialize
399 * This function maps descriptor rings to the queue-specific vectors
400 * we were allotted through the MSI-X enabling code. Ideally, we'd have
401 * one vector per ring/queue, but on a constrained vector budget, we
402 * group the rings as "efficiently" as possible. You would add new
403 * mapping configurations in here.
405 static int i40evf_map_rings_to_vectors(struct i40evf_adapter
*adapter
)
409 int rxr_idx
= 0, txr_idx
= 0;
410 int rxr_remaining
= adapter
->num_active_queues
;
411 int txr_remaining
= adapter
->num_active_queues
;
416 q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
418 /* The ideal configuration...
419 * We have enough vectors to map one per queue.
421 if (q_vectors
>= (rxr_remaining
* 2)) {
422 for (; rxr_idx
< rxr_remaining
; v_start
++, rxr_idx
++)
423 i40evf_map_vector_to_rxq(adapter
, v_start
, rxr_idx
);
425 for (; txr_idx
< txr_remaining
; v_start
++, txr_idx
++)
426 i40evf_map_vector_to_txq(adapter
, v_start
, txr_idx
);
430 /* If we don't have enough vectors for a 1-to-1
431 * mapping, we'll have to group them so there are
432 * multiple queues per vector.
433 * Re-adjusting *qpv takes care of the remainder.
435 for (i
= v_start
; i
< q_vectors
; i
++) {
436 rqpv
= DIV_ROUND_UP(rxr_remaining
, q_vectors
- i
);
437 for (j
= 0; j
< rqpv
; j
++) {
438 i40evf_map_vector_to_rxq(adapter
, i
, rxr_idx
);
443 for (i
= v_start
; i
< q_vectors
; i
++) {
444 tqpv
= DIV_ROUND_UP(txr_remaining
, q_vectors
- i
);
445 for (j
= 0; j
< tqpv
; j
++) {
446 i40evf_map_vector_to_txq(adapter
, i
, txr_idx
);
453 adapter
->aq_required
|= I40EVF_FLAG_AQ_MAP_VECTORS
;
458 #ifdef CONFIG_NET_POLL_CONTROLLER
460 * i40evf_netpoll - A Polling 'interrupt' handler
461 * @netdev: network interface device structure
463 * This is used by netconsole to send skbs without having to re-enable
464 * interrupts. It's not called while the normal interrupt routine is executing.
466 static void i40evf_netpoll(struct net_device
*netdev
)
468 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
469 int q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
472 /* if interface is down do nothing */
473 if (test_bit(__I40E_DOWN
, &adapter
->vsi
.state
))
476 for (i
= 0; i
< q_vectors
; i
++)
477 i40evf_msix_clean_rings(0, &adapter
->q_vectors
[i
]);
482 * i40evf_request_traffic_irqs - Initialize MSI-X interrupts
483 * @adapter: board private structure
485 * Allocates MSI-X vectors for tx and rx handling, and requests
486 * interrupts from the kernel.
489 i40evf_request_traffic_irqs(struct i40evf_adapter
*adapter
, char *basename
)
491 int vector
, err
, q_vectors
;
492 int rx_int_idx
= 0, tx_int_idx
= 0;
494 i40evf_irq_disable(adapter
);
495 /* Decrement for Other and TCP Timer vectors */
496 q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
498 for (vector
= 0; vector
< q_vectors
; vector
++) {
499 struct i40e_q_vector
*q_vector
= &adapter
->q_vectors
[vector
];
501 if (q_vector
->tx
.ring
&& q_vector
->rx
.ring
) {
502 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
503 "i40evf-%s-%s-%d", basename
,
504 "TxRx", rx_int_idx
++);
506 } else if (q_vector
->rx
.ring
) {
507 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
508 "i40evf-%s-%s-%d", basename
,
510 } else if (q_vector
->tx
.ring
) {
511 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
512 "i40evf-%s-%s-%d", basename
,
515 /* skip this unused q_vector */
519 adapter
->msix_entries
[vector
+ NONQ_VECS
].vector
,
520 i40evf_msix_clean_rings
,
525 dev_info(&adapter
->pdev
->dev
,
526 "Request_irq failed, error: %d\n", err
);
527 goto free_queue_irqs
;
529 /* assign the mask for this irq */
530 irq_set_affinity_hint(
531 adapter
->msix_entries
[vector
+ NONQ_VECS
].vector
,
532 q_vector
->affinity_mask
);
540 irq_set_affinity_hint(
541 adapter
->msix_entries
[vector
+ NONQ_VECS
].vector
,
543 free_irq(adapter
->msix_entries
[vector
+ NONQ_VECS
].vector
,
544 &adapter
->q_vectors
[vector
]);
550 * i40evf_request_misc_irq - Initialize MSI-X interrupts
551 * @adapter: board private structure
553 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This
554 * vector is only for the admin queue, and stays active even when the netdev
557 static int i40evf_request_misc_irq(struct i40evf_adapter
*adapter
)
559 struct net_device
*netdev
= adapter
->netdev
;
562 snprintf(adapter
->misc_vector_name
,
563 sizeof(adapter
->misc_vector_name
) - 1, "i40evf-%s:mbx",
564 dev_name(&adapter
->pdev
->dev
));
565 err
= request_irq(adapter
->msix_entries
[0].vector
,
567 adapter
->misc_vector_name
, netdev
);
569 dev_err(&adapter
->pdev
->dev
,
570 "request_irq for %s failed: %d\n",
571 adapter
->misc_vector_name
, err
);
572 free_irq(adapter
->msix_entries
[0].vector
, netdev
);
578 * i40evf_free_traffic_irqs - Free MSI-X interrupts
579 * @adapter: board private structure
581 * Frees all MSI-X vectors other than 0.
583 static void i40evf_free_traffic_irqs(struct i40evf_adapter
*adapter
)
588 q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
590 for (i
= 0; i
< q_vectors
; i
++) {
591 irq_set_affinity_hint(adapter
->msix_entries
[i
+1].vector
,
593 free_irq(adapter
->msix_entries
[i
+1].vector
,
594 &adapter
->q_vectors
[i
]);
599 * i40evf_free_misc_irq - Free MSI-X miscellaneous vector
600 * @adapter: board private structure
602 * Frees MSI-X vector 0.
604 static void i40evf_free_misc_irq(struct i40evf_adapter
*adapter
)
606 struct net_device
*netdev
= adapter
->netdev
;
608 free_irq(adapter
->msix_entries
[0].vector
, netdev
);
612 * i40evf_configure_tx - Configure Transmit Unit after Reset
613 * @adapter: board private structure
615 * Configure the Tx unit of the MAC after a reset.
617 static void i40evf_configure_tx(struct i40evf_adapter
*adapter
)
619 struct i40e_hw
*hw
= &adapter
->hw
;
622 for (i
= 0; i
< adapter
->num_active_queues
; i
++)
623 adapter
->tx_rings
[i
].tail
= hw
->hw_addr
+ I40E_QTX_TAIL1(i
);
627 * i40evf_configure_rx - Configure Receive Unit after Reset
628 * @adapter: board private structure
630 * Configure the Rx unit of the MAC after a reset.
632 static void i40evf_configure_rx(struct i40evf_adapter
*adapter
)
634 struct i40e_hw
*hw
= &adapter
->hw
;
635 struct net_device
*netdev
= adapter
->netdev
;
636 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
641 adapter
->flags
&= ~I40EVF_FLAG_RX_PS_CAPABLE
;
642 adapter
->flags
|= I40EVF_FLAG_RX_1BUF_CAPABLE
;
644 /* Decide whether to use packet split mode or not */
645 if (netdev
->mtu
> ETH_DATA_LEN
) {
646 if (adapter
->flags
& I40EVF_FLAG_RX_PS_CAPABLE
)
647 adapter
->flags
|= I40EVF_FLAG_RX_PS_ENABLED
;
649 adapter
->flags
&= ~I40EVF_FLAG_RX_PS_ENABLED
;
651 if (adapter
->flags
& I40EVF_FLAG_RX_1BUF_CAPABLE
)
652 adapter
->flags
&= ~I40EVF_FLAG_RX_PS_ENABLED
;
654 adapter
->flags
|= I40EVF_FLAG_RX_PS_ENABLED
;
657 /* Set the RX buffer length according to the mode */
658 if (adapter
->flags
& I40EVF_FLAG_RX_PS_ENABLED
) {
659 rx_buf_len
= I40E_RX_HDR_SIZE
;
661 if (netdev
->mtu
<= ETH_DATA_LEN
)
662 rx_buf_len
= I40EVF_RXBUFFER_2048
;
664 rx_buf_len
= ALIGN(max_frame
, 1024);
667 for (i
= 0; i
< adapter
->num_active_queues
; i
++) {
668 adapter
->rx_rings
[i
].tail
= hw
->hw_addr
+ I40E_QRX_TAIL1(i
);
669 adapter
->rx_rings
[i
].rx_buf_len
= rx_buf_len
;
674 * i40evf_find_vlan - Search filter list for specific vlan filter
675 * @adapter: board private structure
678 * Returns ptr to the filter object or NULL
681 i40evf_vlan_filter
*i40evf_find_vlan(struct i40evf_adapter
*adapter
, u16 vlan
)
683 struct i40evf_vlan_filter
*f
;
685 list_for_each_entry(f
, &adapter
->vlan_filter_list
, list
) {
693 * i40evf_add_vlan - Add a vlan filter to the list
694 * @adapter: board private structure
697 * Returns ptr to the filter object or NULL when no memory available.
700 i40evf_vlan_filter
*i40evf_add_vlan(struct i40evf_adapter
*adapter
, u16 vlan
)
702 struct i40evf_vlan_filter
*f
= NULL
;
705 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
706 &adapter
->crit_section
)) {
712 f
= i40evf_find_vlan(adapter
, vlan
);
714 f
= kzalloc(sizeof(*f
), GFP_ATOMIC
);
720 INIT_LIST_HEAD(&f
->list
);
721 list_add(&f
->list
, &adapter
->vlan_filter_list
);
723 adapter
->aq_required
|= I40EVF_FLAG_AQ_ADD_VLAN_FILTER
;
727 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
733 * i40evf_del_vlan - Remove a vlan filter from the list
734 * @adapter: board private structure
737 static void i40evf_del_vlan(struct i40evf_adapter
*adapter
, u16 vlan
)
739 struct i40evf_vlan_filter
*f
;
742 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
743 &adapter
->crit_section
)) {
749 f
= i40evf_find_vlan(adapter
, vlan
);
752 adapter
->aq_required
|= I40EVF_FLAG_AQ_DEL_VLAN_FILTER
;
754 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
758 * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device
759 * @netdev: network device struct
762 static int i40evf_vlan_rx_add_vid(struct net_device
*netdev
,
763 __always_unused __be16 proto
, u16 vid
)
765 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
767 if (!VLAN_ALLOWED(adapter
))
769 if (i40evf_add_vlan(adapter
, vid
) == NULL
)
775 * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device
776 * @netdev: network device struct
779 static int i40evf_vlan_rx_kill_vid(struct net_device
*netdev
,
780 __always_unused __be16 proto
, u16 vid
)
782 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
784 if (VLAN_ALLOWED(adapter
)) {
785 i40evf_del_vlan(adapter
, vid
);
792 * i40evf_find_filter - Search filter list for specific mac filter
793 * @adapter: board private structure
794 * @macaddr: the MAC address
796 * Returns ptr to the filter object or NULL
799 i40evf_mac_filter
*i40evf_find_filter(struct i40evf_adapter
*adapter
,
802 struct i40evf_mac_filter
*f
;
807 list_for_each_entry(f
, &adapter
->mac_filter_list
, list
) {
808 if (ether_addr_equal(macaddr
, f
->macaddr
))
815 * i40e_add_filter - Add a mac filter to the filter list
816 * @adapter: board private structure
817 * @macaddr: the MAC address
819 * Returns ptr to the filter object or NULL when no memory available.
822 i40evf_mac_filter
*i40evf_add_filter(struct i40evf_adapter
*adapter
,
825 struct i40evf_mac_filter
*f
;
831 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
832 &adapter
->crit_section
)) {
838 f
= i40evf_find_filter(adapter
, macaddr
);
840 f
= kzalloc(sizeof(*f
), GFP_ATOMIC
);
842 clear_bit(__I40EVF_IN_CRITICAL_TASK
,
843 &adapter
->crit_section
);
847 ether_addr_copy(f
->macaddr
, macaddr
);
849 list_add(&f
->list
, &adapter
->mac_filter_list
);
851 adapter
->aq_required
|= I40EVF_FLAG_AQ_ADD_MAC_FILTER
;
854 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
859 * i40evf_set_mac - NDO callback to set port mac address
860 * @netdev: network interface device structure
861 * @p: pointer to an address structure
863 * Returns 0 on success, negative on failure
865 static int i40evf_set_mac(struct net_device
*netdev
, void *p
)
867 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
868 struct i40e_hw
*hw
= &adapter
->hw
;
869 struct i40evf_mac_filter
*f
;
870 struct sockaddr
*addr
= p
;
872 if (!is_valid_ether_addr(addr
->sa_data
))
873 return -EADDRNOTAVAIL
;
875 if (ether_addr_equal(netdev
->dev_addr
, addr
->sa_data
))
878 if (adapter
->flags
& I40EVF_FLAG_ADDR_SET_BY_PF
)
881 f
= i40evf_find_filter(adapter
, hw
->mac
.addr
);
884 adapter
->aq_required
|= I40EVF_FLAG_AQ_DEL_MAC_FILTER
;
887 f
= i40evf_add_filter(adapter
, addr
->sa_data
);
889 ether_addr_copy(hw
->mac
.addr
, addr
->sa_data
);
890 ether_addr_copy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
);
893 return (f
== NULL
) ? -ENOMEM
: 0;
897 * i40evf_set_rx_mode - NDO callback to set the netdev filters
898 * @netdev: network interface device structure
900 static void i40evf_set_rx_mode(struct net_device
*netdev
)
902 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
903 struct i40evf_mac_filter
*f
, *ftmp
;
904 struct netdev_hw_addr
*uca
;
905 struct netdev_hw_addr
*mca
;
906 struct netdev_hw_addr
*ha
;
909 /* add addr if not already in the filter list */
910 netdev_for_each_uc_addr(uca
, netdev
) {
911 i40evf_add_filter(adapter
, uca
->addr
);
913 netdev_for_each_mc_addr(mca
, netdev
) {
914 i40evf_add_filter(adapter
, mca
->addr
);
917 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
918 &adapter
->crit_section
)) {
921 dev_err(&adapter
->pdev
->dev
,
922 "Failed to get lock in %s\n", __func__
);
926 /* remove filter if not in netdev list */
927 list_for_each_entry_safe(f
, ftmp
, &adapter
->mac_filter_list
, list
) {
928 netdev_for_each_mc_addr(mca
, netdev
)
929 if (ether_addr_equal(mca
->addr
, f
->macaddr
))
930 goto bottom_of_search_loop
;
932 netdev_for_each_uc_addr(uca
, netdev
)
933 if (ether_addr_equal(uca
->addr
, f
->macaddr
))
934 goto bottom_of_search_loop
;
936 for_each_dev_addr(netdev
, ha
)
937 if (ether_addr_equal(ha
->addr
, f
->macaddr
))
938 goto bottom_of_search_loop
;
940 if (ether_addr_equal(f
->macaddr
, adapter
->hw
.mac
.addr
))
941 goto bottom_of_search_loop
;
943 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
945 adapter
->aq_required
|= I40EVF_FLAG_AQ_DEL_MAC_FILTER
;
947 bottom_of_search_loop
:
950 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
954 * i40evf_napi_enable_all - enable NAPI on all queue vectors
955 * @adapter: board private structure
957 static void i40evf_napi_enable_all(struct i40evf_adapter
*adapter
)
960 struct i40e_q_vector
*q_vector
;
961 int q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
963 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
964 struct napi_struct
*napi
;
966 q_vector
= &adapter
->q_vectors
[q_idx
];
967 napi
= &q_vector
->napi
;
973 * i40evf_napi_disable_all - disable NAPI on all queue vectors
974 * @adapter: board private structure
976 static void i40evf_napi_disable_all(struct i40evf_adapter
*adapter
)
979 struct i40e_q_vector
*q_vector
;
980 int q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
982 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
983 q_vector
= &adapter
->q_vectors
[q_idx
];
984 napi_disable(&q_vector
->napi
);
989 * i40evf_configure - set up transmit and receive data structures
990 * @adapter: board private structure
992 static void i40evf_configure(struct i40evf_adapter
*adapter
)
994 struct net_device
*netdev
= adapter
->netdev
;
997 i40evf_set_rx_mode(netdev
);
999 i40evf_configure_tx(adapter
);
1000 i40evf_configure_rx(adapter
);
1001 adapter
->aq_required
|= I40EVF_FLAG_AQ_CONFIGURE_QUEUES
;
1003 for (i
= 0; i
< adapter
->num_active_queues
; i
++) {
1004 struct i40e_ring
*ring
= &adapter
->rx_rings
[i
];
1006 i40evf_alloc_rx_buffers_1buf(ring
, ring
->count
);
1007 ring
->next_to_use
= ring
->count
- 1;
1008 writel(ring
->next_to_use
, ring
->tail
);
1013 * i40evf_up_complete - Finish the last steps of bringing up a connection
1014 * @adapter: board private structure
1016 static int i40evf_up_complete(struct i40evf_adapter
*adapter
)
1018 adapter
->state
= __I40EVF_RUNNING
;
1019 clear_bit(__I40E_DOWN
, &adapter
->vsi
.state
);
1021 i40evf_napi_enable_all(adapter
);
1023 adapter
->aq_required
|= I40EVF_FLAG_AQ_ENABLE_QUEUES
;
1024 mod_timer_pending(&adapter
->watchdog_timer
, jiffies
+ 1);
1029 * i40e_down - Shutdown the connection processing
1030 * @adapter: board private structure
1032 void i40evf_down(struct i40evf_adapter
*adapter
)
1034 struct net_device
*netdev
= adapter
->netdev
;
1035 struct i40evf_mac_filter
*f
;
1037 if (adapter
->state
<= __I40EVF_DOWN_PENDING
)
1040 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
1041 &adapter
->crit_section
))
1042 usleep_range(500, 1000);
1044 netif_carrier_off(netdev
);
1045 netif_tx_disable(netdev
);
1046 i40evf_napi_disable_all(adapter
);
1047 i40evf_irq_disable(adapter
);
1049 /* remove all MAC filters */
1050 list_for_each_entry(f
, &adapter
->mac_filter_list
, list
) {
1053 /* remove all VLAN filters */
1054 list_for_each_entry(f
, &adapter
->vlan_filter_list
, list
) {
1057 if (!(adapter
->flags
& I40EVF_FLAG_PF_COMMS_FAILED
) &&
1058 adapter
->state
!= __I40EVF_RESETTING
) {
1059 /* cancel any current operation */
1060 adapter
->current_op
= I40E_VIRTCHNL_OP_UNKNOWN
;
1061 /* Schedule operations to close down the HW. Don't wait
1062 * here for this to complete. The watchdog is still running
1063 * and it will take care of this.
1065 adapter
->aq_required
= I40EVF_FLAG_AQ_DEL_MAC_FILTER
;
1066 adapter
->aq_required
|= I40EVF_FLAG_AQ_DEL_VLAN_FILTER
;
1067 adapter
->aq_required
|= I40EVF_FLAG_AQ_DISABLE_QUEUES
;
1070 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
1074 * i40evf_acquire_msix_vectors - Setup the MSIX capability
1075 * @adapter: board private structure
1076 * @vectors: number of vectors to request
1078 * Work with the OS to set up the MSIX vectors needed.
1080 * Returns 0 on success, negative on failure
1083 i40evf_acquire_msix_vectors(struct i40evf_adapter
*adapter
, int vectors
)
1085 int err
, vector_threshold
;
1087 /* We'll want at least 3 (vector_threshold):
1088 * 0) Other (Admin Queue and link, mostly)
1092 vector_threshold
= MIN_MSIX_COUNT
;
1094 /* The more we get, the more we will assign to Tx/Rx Cleanup
1095 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1096 * Right now, we simply care about how many we'll get; we'll
1097 * set them up later while requesting irq's.
1099 err
= pci_enable_msix_range(adapter
->pdev
, adapter
->msix_entries
,
1100 vector_threshold
, vectors
);
1102 dev_err(&adapter
->pdev
->dev
, "Unable to allocate MSI-X interrupts\n");
1103 kfree(adapter
->msix_entries
);
1104 adapter
->msix_entries
= NULL
;
1108 /* Adjust for only the vectors we'll use, which is minimum
1109 * of max_msix_q_vectors + NONQ_VECS, or the number of
1110 * vectors we were allocated.
1112 adapter
->num_msix_vectors
= err
;
1117 * i40evf_free_queues - Free memory for all rings
1118 * @adapter: board private structure to initialize
1120 * Free all of the memory associated with queue pairs.
1122 static void i40evf_free_queues(struct i40evf_adapter
*adapter
)
1124 if (!adapter
->vsi_res
)
1126 kfree(adapter
->tx_rings
);
1127 adapter
->tx_rings
= NULL
;
1128 kfree(adapter
->rx_rings
);
1129 adapter
->rx_rings
= NULL
;
1133 * i40evf_alloc_queues - Allocate memory for all rings
1134 * @adapter: board private structure to initialize
1136 * We allocate one ring per queue at run-time since we don't know the
1137 * number of queues at compile-time. The polling_netdev array is
1138 * intended for Multiqueue, but should work fine with a single queue.
1140 static int i40evf_alloc_queues(struct i40evf_adapter
*adapter
)
1144 adapter
->tx_rings
= kcalloc(adapter
->num_active_queues
,
1145 sizeof(struct i40e_ring
), GFP_KERNEL
);
1146 if (!adapter
->tx_rings
)
1148 adapter
->rx_rings
= kcalloc(adapter
->num_active_queues
,
1149 sizeof(struct i40e_ring
), GFP_KERNEL
);
1150 if (!adapter
->rx_rings
)
1153 for (i
= 0; i
< adapter
->num_active_queues
; i
++) {
1154 struct i40e_ring
*tx_ring
;
1155 struct i40e_ring
*rx_ring
;
1157 tx_ring
= &adapter
->tx_rings
[i
];
1159 tx_ring
->queue_index
= i
;
1160 tx_ring
->netdev
= adapter
->netdev
;
1161 tx_ring
->dev
= &adapter
->pdev
->dev
;
1162 tx_ring
->count
= adapter
->tx_desc_count
;
1163 if (adapter
->flags
& I40E_FLAG_WB_ON_ITR_CAPABLE
)
1164 tx_ring
->flags
|= I40E_TXR_FLAGS_WB_ON_ITR
;
1166 rx_ring
= &adapter
->rx_rings
[i
];
1167 rx_ring
->queue_index
= i
;
1168 rx_ring
->netdev
= adapter
->netdev
;
1169 rx_ring
->dev
= &adapter
->pdev
->dev
;
1170 rx_ring
->count
= adapter
->rx_desc_count
;
1176 i40evf_free_queues(adapter
);
1181 * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported
1182 * @adapter: board private structure to initialize
1184 * Attempt to configure the interrupts using the best available
1185 * capabilities of the hardware and the kernel.
1187 static int i40evf_set_interrupt_capability(struct i40evf_adapter
*adapter
)
1189 int vector
, v_budget
;
1193 if (!adapter
->vsi_res
) {
1197 pairs
= adapter
->num_active_queues
;
1199 /* It's easy to be greedy for MSI-X vectors, but it really
1200 * doesn't do us much good if we have a lot more vectors
1201 * than CPU's. So let's be conservative and only ask for
1202 * (roughly) twice the number of vectors as there are CPU's.
1204 v_budget
= min_t(int, pairs
, (int)(num_online_cpus() * 2)) + NONQ_VECS
;
1205 v_budget
= min_t(int, v_budget
, (int)adapter
->vf_res
->max_vectors
);
1207 adapter
->msix_entries
= kcalloc(v_budget
,
1208 sizeof(struct msix_entry
), GFP_KERNEL
);
1209 if (!adapter
->msix_entries
) {
1214 for (vector
= 0; vector
< v_budget
; vector
++)
1215 adapter
->msix_entries
[vector
].entry
= vector
;
1217 err
= i40evf_acquire_msix_vectors(adapter
, v_budget
);
1220 netif_set_real_num_rx_queues(adapter
->netdev
, pairs
);
1221 netif_set_real_num_tx_queues(adapter
->netdev
, pairs
);
1226 * i40e_config_rss_aq - Prepare for RSS using AQ commands
1227 * @vsi: vsi structure
1228 * @seed: RSS hash seed
1229 * @lut: Lookup table
1230 * @lut_size: Lookup table size
1232 * Return 0 on success, negative on failure
1234 static int i40evf_config_rss_aq(struct i40e_vsi
*vsi
, const u8
*seed
,
1235 u8
*lut
, u16 lut_size
)
1237 struct i40evf_adapter
*adapter
= vsi
->back
;
1238 struct i40e_hw
*hw
= &adapter
->hw
;
1244 if (adapter
->current_op
!= I40E_VIRTCHNL_OP_UNKNOWN
) {
1245 /* bail because we already have a command pending */
1246 dev_err(&adapter
->pdev
->dev
, "Cannot configure RSS, command %d pending\n",
1247 adapter
->current_op
);
1252 struct i40e_aqc_get_set_rss_key_data
*rss_key
=
1253 (struct i40e_aqc_get_set_rss_key_data
*)seed
;
1254 ret
= i40evf_aq_set_rss_key(hw
, vsi
->id
, rss_key
);
1256 dev_err(&adapter
->pdev
->dev
, "Cannot set RSS key, err %s aq_err %s\n",
1257 i40evf_stat_str(hw
, ret
),
1258 i40evf_aq_str(hw
, hw
->aq
.asq_last_status
));
1264 ret
= i40evf_aq_set_rss_lut(hw
, vsi
->id
, false, lut
, lut_size
);
1266 dev_err(&adapter
->pdev
->dev
,
1267 "Cannot set RSS lut, err %s aq_err %s\n",
1268 i40evf_stat_str(hw
, ret
),
1269 i40evf_aq_str(hw
, hw
->aq
.asq_last_status
));
1278 * i40evf_config_rss_reg - Configure RSS keys and lut by writing registers
1279 * @vsi: Pointer to vsi structure
1280 * @seed: RSS hash seed
1281 * @lut: Lookup table
1282 * @lut_size: Lookup table size
1284 * Returns 0 on success, negative on failure
1286 static int i40evf_config_rss_reg(struct i40e_vsi
*vsi
, const u8
*seed
,
1287 const u8
*lut
, u16 lut_size
)
1289 struct i40evf_adapter
*adapter
= vsi
->back
;
1290 struct i40e_hw
*hw
= &adapter
->hw
;
1294 u32
*seed_dw
= (u32
*)seed
;
1296 for (i
= 0; i
<= I40E_VFQF_HKEY_MAX_INDEX
; i
++)
1297 wr32(hw
, I40E_VFQF_HKEY(i
), seed_dw
[i
]);
1301 u32
*lut_dw
= (u32
*)lut
;
1303 if (lut_size
!= I40EVF_HLUT_ARRAY_SIZE
)
1306 for (i
= 0; i
<= I40E_VFQF_HLUT_MAX_INDEX
; i
++)
1307 wr32(hw
, I40E_VFQF_HLUT(i
), lut_dw
[i
]);
1315 * * i40evf_get_rss_aq - Get RSS keys and lut by using AQ commands
1316 * @vsi: Pointer to vsi structure
1317 * @seed: RSS hash seed
1318 * @lut: Lookup table
1319 * @lut_size: Lookup table size
1321 * Return 0 on success, negative on failure
1323 static int i40evf_get_rss_aq(struct i40e_vsi
*vsi
, const u8
*seed
,
1324 u8
*lut
, u16 lut_size
)
1326 struct i40evf_adapter
*adapter
= vsi
->back
;
1327 struct i40e_hw
*hw
= &adapter
->hw
;
1331 ret
= i40evf_aq_get_rss_key(hw
, vsi
->id
,
1332 (struct i40e_aqc_get_set_rss_key_data
*)seed
);
1334 dev_err(&adapter
->pdev
->dev
,
1335 "Cannot get RSS key, err %s aq_err %s\n",
1336 i40evf_stat_str(hw
, ret
),
1337 i40evf_aq_str(hw
, hw
->aq
.asq_last_status
));
1343 ret
= i40evf_aq_get_rss_lut(hw
, vsi
->id
, seed
, lut
, lut_size
);
1345 dev_err(&adapter
->pdev
->dev
,
1346 "Cannot get RSS lut, err %s aq_err %s\n",
1347 i40evf_stat_str(hw
, ret
),
1348 i40evf_aq_str(hw
, hw
->aq
.asq_last_status
));
1357 * * i40evf_get_rss_reg - Get RSS keys and lut by reading registers
1358 * @vsi: Pointer to vsi structure
1359 * @seed: RSS hash seed
1360 * @lut: Lookup table
1361 * @lut_size: Lookup table size
1363 * Returns 0 on success, negative on failure
1365 static int i40evf_get_rss_reg(struct i40e_vsi
*vsi
, const u8
*seed
,
1366 const u8
*lut
, u16 lut_size
)
1368 struct i40evf_adapter
*adapter
= vsi
->back
;
1369 struct i40e_hw
*hw
= &adapter
->hw
;
1373 u32
*seed_dw
= (u32
*)seed
;
1375 for (i
= 0; i
<= I40E_VFQF_HKEY_MAX_INDEX
; i
++)
1376 seed_dw
[i
] = rd32(hw
, I40E_VFQF_HKEY(i
));
1380 u32
*lut_dw
= (u32
*)lut
;
1382 if (lut_size
!= I40EVF_HLUT_ARRAY_SIZE
)
1385 for (i
= 0; i
<= I40E_VFQF_HLUT_MAX_INDEX
; i
++)
1386 lut_dw
[i
] = rd32(hw
, I40E_VFQF_HLUT(i
));
1393 * i40evf_config_rss - Configure RSS keys and lut
1394 * @vsi: Pointer to vsi structure
1395 * @seed: RSS hash seed
1396 * @lut: Lookup table
1397 * @lut_size: Lookup table size
1399 * Returns 0 on success, negative on failure
1401 int i40evf_config_rss(struct i40e_vsi
*vsi
, const u8
*seed
,
1402 u8
*lut
, u16 lut_size
)
1404 struct i40evf_adapter
*adapter
= vsi
->back
;
1406 if (RSS_AQ(adapter
))
1407 return i40evf_config_rss_aq(vsi
, seed
, lut
, lut_size
);
1409 return i40evf_config_rss_reg(vsi
, seed
, lut
, lut_size
);
1413 * i40evf_get_rss - Get RSS keys and lut
1414 * @vsi: Pointer to vsi structure
1415 * @seed: RSS hash seed
1416 * @lut: Lookup table
1417 * @lut_size: Lookup table size
1419 * Returns 0 on success, negative on failure
1421 int i40evf_get_rss(struct i40e_vsi
*vsi
, const u8
*seed
, u8
*lut
, u16 lut_size
)
1423 struct i40evf_adapter
*adapter
= vsi
->back
;
1425 if (RSS_AQ(adapter
))
1426 return i40evf_get_rss_aq(vsi
, seed
, lut
, lut_size
);
1428 return i40evf_get_rss_reg(vsi
, seed
, lut
, lut_size
);
1432 * i40evf_fill_rss_lut - Fill the lut with default values
1433 * @lut: Lookup table to be filled with
1434 * @rss_table_size: Lookup table size
1435 * @rss_size: Range of queue number for hashing
1437 static void i40evf_fill_rss_lut(u8
*lut
, u16 rss_table_size
, u16 rss_size
)
1441 for (i
= 0; i
< rss_table_size
; i
++)
1442 lut
[i
] = i
% rss_size
;
1446 * i40evf_init_rss - Prepare for RSS
1447 * @adapter: board private structure
1449 * Return 0 on success, negative on failure
1451 static int i40evf_init_rss(struct i40evf_adapter
*adapter
)
1453 struct i40e_vsi
*vsi
= &adapter
->vsi
;
1454 struct i40e_hw
*hw
= &adapter
->hw
;
1455 u8 seed
[I40EVF_HKEY_ARRAY_SIZE
];
1460 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
1461 if (adapter
->vf_res
->vf_offload_flags
&
1462 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2
)
1463 hena
= I40E_DEFAULT_RSS_HENA_EXPANDED
;
1465 hena
= I40E_DEFAULT_RSS_HENA
;
1466 wr32(hw
, I40E_VFQF_HENA(0), (u32
)hena
);
1467 wr32(hw
, I40E_VFQF_HENA(1), (u32
)(hena
>> 32));
1469 lut
= kzalloc(I40EVF_HLUT_ARRAY_SIZE
, GFP_KERNEL
);
1473 /* Use user configured lut if there is one, otherwise use default */
1474 if (vsi
->rss_lut_user
)
1475 memcpy(lut
, vsi
->rss_lut_user
, I40EVF_HLUT_ARRAY_SIZE
);
1477 i40evf_fill_rss_lut(lut
, I40EVF_HLUT_ARRAY_SIZE
,
1478 adapter
->num_active_queues
);
1480 /* Use user configured hash key if there is one, otherwise
1483 if (vsi
->rss_hkey_user
)
1484 memcpy(seed
, vsi
->rss_hkey_user
, I40EVF_HKEY_ARRAY_SIZE
);
1486 netdev_rss_key_fill((void *)seed
, I40EVF_HKEY_ARRAY_SIZE
);
1487 ret
= i40evf_config_rss(vsi
, seed
, lut
, I40EVF_HLUT_ARRAY_SIZE
);
1494 * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors
1495 * @adapter: board private structure to initialize
1497 * We allocate one q_vector per queue interrupt. If allocation fails we
1500 static int i40evf_alloc_q_vectors(struct i40evf_adapter
*adapter
)
1502 int q_idx
= 0, num_q_vectors
;
1503 struct i40e_q_vector
*q_vector
;
1505 num_q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
1506 adapter
->q_vectors
= kcalloc(num_q_vectors
, sizeof(*q_vector
),
1508 if (!adapter
->q_vectors
)
1511 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
1512 q_vector
= &adapter
->q_vectors
[q_idx
];
1513 q_vector
->adapter
= adapter
;
1514 q_vector
->vsi
= &adapter
->vsi
;
1515 q_vector
->v_idx
= q_idx
;
1516 netif_napi_add(adapter
->netdev
, &q_vector
->napi
,
1517 i40evf_napi_poll
, NAPI_POLL_WEIGHT
);
1525 q_vector
= &adapter
->q_vectors
[q_idx
];
1526 netif_napi_del(&q_vector
->napi
);
1528 kfree(adapter
->q_vectors
);
1533 * i40evf_free_q_vectors - Free memory allocated for interrupt vectors
1534 * @adapter: board private structure to initialize
1536 * This function frees the memory allocated to the q_vectors. In addition if
1537 * NAPI is enabled it will delete any references to the NAPI struct prior
1538 * to freeing the q_vector.
1540 static void i40evf_free_q_vectors(struct i40evf_adapter
*adapter
)
1542 int q_idx
, num_q_vectors
;
1545 num_q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
1546 napi_vectors
= adapter
->num_active_queues
;
1548 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
1549 struct i40e_q_vector
*q_vector
= &adapter
->q_vectors
[q_idx
];
1550 if (q_idx
< napi_vectors
)
1551 netif_napi_del(&q_vector
->napi
);
1553 kfree(adapter
->q_vectors
);
1557 * i40evf_reset_interrupt_capability - Reset MSIX setup
1558 * @adapter: board private structure
1561 void i40evf_reset_interrupt_capability(struct i40evf_adapter
*adapter
)
1563 pci_disable_msix(adapter
->pdev
);
1564 kfree(adapter
->msix_entries
);
1565 adapter
->msix_entries
= NULL
;
1569 * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init
1570 * @adapter: board private structure to initialize
1573 int i40evf_init_interrupt_scheme(struct i40evf_adapter
*adapter
)
1577 err
= i40evf_set_interrupt_capability(adapter
);
1579 dev_err(&adapter
->pdev
->dev
,
1580 "Unable to setup interrupt capabilities\n");
1581 goto err_set_interrupt
;
1584 err
= i40evf_alloc_q_vectors(adapter
);
1586 dev_err(&adapter
->pdev
->dev
,
1587 "Unable to allocate memory for queue vectors\n");
1588 goto err_alloc_q_vectors
;
1591 err
= i40evf_alloc_queues(adapter
);
1593 dev_err(&adapter
->pdev
->dev
,
1594 "Unable to allocate memory for queues\n");
1595 goto err_alloc_queues
;
1598 dev_info(&adapter
->pdev
->dev
, "Multiqueue %s: Queue pair count = %u",
1599 (adapter
->num_active_queues
> 1) ? "Enabled" : "Disabled",
1600 adapter
->num_active_queues
);
1604 i40evf_free_q_vectors(adapter
);
1605 err_alloc_q_vectors
:
1606 i40evf_reset_interrupt_capability(adapter
);
1612 * i40evf_clear_rss_config_user - Clear user configurations of RSS
1613 * @vsi: Pointer to VSI structure
1615 static void i40evf_clear_rss_config_user(struct i40e_vsi
*vsi
)
1620 kfree(vsi
->rss_hkey_user
);
1621 vsi
->rss_hkey_user
= NULL
;
1623 kfree(vsi
->rss_lut_user
);
1624 vsi
->rss_lut_user
= NULL
;
1628 * i40evf_watchdog_timer - Periodic call-back timer
1629 * @data: pointer to adapter disguised as unsigned long
1631 static void i40evf_watchdog_timer(unsigned long data
)
1633 struct i40evf_adapter
*adapter
= (struct i40evf_adapter
*)data
;
1635 schedule_work(&adapter
->watchdog_task
);
1636 /* timer will be rescheduled in watchdog task */
1640 * i40evf_watchdog_task - Periodic call-back task
1641 * @work: pointer to work_struct
1643 static void i40evf_watchdog_task(struct work_struct
*work
)
1645 struct i40evf_adapter
*adapter
= container_of(work
,
1646 struct i40evf_adapter
,
1648 struct i40e_hw
*hw
= &adapter
->hw
;
1651 if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
))
1652 goto restart_watchdog
;
1654 if (adapter
->flags
& I40EVF_FLAG_PF_COMMS_FAILED
) {
1655 reg_val
= rd32(hw
, I40E_VFGEN_RSTAT
) &
1656 I40E_VFGEN_RSTAT_VFR_STATE_MASK
;
1657 if ((reg_val
== I40E_VFR_VFACTIVE
) ||
1658 (reg_val
== I40E_VFR_COMPLETED
)) {
1659 /* A chance for redemption! */
1660 dev_err(&adapter
->pdev
->dev
, "Hardware came out of reset. Attempting reinit.\n");
1661 adapter
->state
= __I40EVF_STARTUP
;
1662 adapter
->flags
&= ~I40EVF_FLAG_PF_COMMS_FAILED
;
1663 schedule_delayed_work(&adapter
->init_task
, 10);
1664 clear_bit(__I40EVF_IN_CRITICAL_TASK
,
1665 &adapter
->crit_section
);
1666 /* Don't reschedule the watchdog, since we've restarted
1667 * the init task. When init_task contacts the PF and
1668 * gets everything set up again, it'll restart the
1669 * watchdog for us. Down, boy. Sit. Stay. Woof.
1673 adapter
->aq_required
= 0;
1674 adapter
->current_op
= I40E_VIRTCHNL_OP_UNKNOWN
;
1678 if ((adapter
->state
< __I40EVF_DOWN
) ||
1679 (adapter
->flags
& I40EVF_FLAG_RESET_PENDING
))
1682 /* check for reset */
1683 reg_val
= rd32(hw
, I40E_VF_ARQLEN1
) & I40E_VF_ARQLEN1_ARQENABLE_MASK
;
1684 if (!(adapter
->flags
& I40EVF_FLAG_RESET_PENDING
) && !reg_val
) {
1685 adapter
->state
= __I40EVF_RESETTING
;
1686 adapter
->flags
|= I40EVF_FLAG_RESET_PENDING
;
1687 dev_err(&adapter
->pdev
->dev
, "Hardware reset detected\n");
1688 schedule_work(&adapter
->reset_task
);
1689 adapter
->aq_required
= 0;
1690 adapter
->current_op
= I40E_VIRTCHNL_OP_UNKNOWN
;
1694 /* Process admin queue tasks. After init, everything gets done
1695 * here so we don't race on the admin queue.
1697 if (adapter
->current_op
) {
1698 if (!i40evf_asq_done(hw
)) {
1699 dev_dbg(&adapter
->pdev
->dev
, "Admin queue timeout\n");
1700 i40evf_send_api_ver(adapter
);
1704 if (adapter
->aq_required
& I40EVF_FLAG_AQ_GET_CONFIG
) {
1705 i40evf_send_vf_config_msg(adapter
);
1709 if (adapter
->aq_required
& I40EVF_FLAG_AQ_DISABLE_QUEUES
) {
1710 i40evf_disable_queues(adapter
);
1714 if (adapter
->aq_required
& I40EVF_FLAG_AQ_MAP_VECTORS
) {
1715 i40evf_map_queues(adapter
);
1719 if (adapter
->aq_required
& I40EVF_FLAG_AQ_ADD_MAC_FILTER
) {
1720 i40evf_add_ether_addrs(adapter
);
1724 if (adapter
->aq_required
& I40EVF_FLAG_AQ_ADD_VLAN_FILTER
) {
1725 i40evf_add_vlans(adapter
);
1729 if (adapter
->aq_required
& I40EVF_FLAG_AQ_DEL_MAC_FILTER
) {
1730 i40evf_del_ether_addrs(adapter
);
1734 if (adapter
->aq_required
& I40EVF_FLAG_AQ_DEL_VLAN_FILTER
) {
1735 i40evf_del_vlans(adapter
);
1739 if (adapter
->aq_required
& I40EVF_FLAG_AQ_CONFIGURE_QUEUES
) {
1740 i40evf_configure_queues(adapter
);
1744 if (adapter
->aq_required
& I40EVF_FLAG_AQ_ENABLE_QUEUES
) {
1745 i40evf_enable_queues(adapter
);
1749 if (adapter
->aq_required
& I40EVF_FLAG_AQ_CONFIGURE_RSS
) {
1750 /* This message goes straight to the firmware, not the
1751 * PF, so we don't have to set current_op as we will
1752 * not get a response through the ARQ.
1754 i40evf_init_rss(adapter
);
1755 adapter
->aq_required
&= ~I40EVF_FLAG_AQ_CONFIGURE_RSS
;
1759 if (adapter
->state
== __I40EVF_RUNNING
)
1760 i40evf_request_stats(adapter
);
1762 if (adapter
->state
== __I40EVF_RUNNING
) {
1763 i40evf_irq_enable_queues(adapter
, ~0);
1764 i40evf_fire_sw_int(adapter
, 0xFF);
1766 i40evf_fire_sw_int(adapter
, 0x1);
1769 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
1771 if (adapter
->state
== __I40EVF_REMOVE
)
1773 if (adapter
->aq_required
)
1774 mod_timer(&adapter
->watchdog_timer
,
1775 jiffies
+ msecs_to_jiffies(20));
1777 mod_timer(&adapter
->watchdog_timer
, jiffies
+ (HZ
* 2));
1778 schedule_work(&adapter
->adminq_task
);
1781 #define I40EVF_RESET_WAIT_MS 10
1782 #define I40EVF_RESET_WAIT_COUNT 500
1784 * i40evf_reset_task - Call-back task to handle hardware reset
1785 * @work: pointer to work_struct
1787 * During reset we need to shut down and reinitialize the admin queue
1788 * before we can use it to communicate with the PF again. We also clear
1789 * and reinit the rings because that context is lost as well.
1791 static void i40evf_reset_task(struct work_struct
*work
)
1793 struct i40evf_adapter
*adapter
= container_of(work
,
1794 struct i40evf_adapter
,
1796 struct net_device
*netdev
= adapter
->netdev
;
1797 struct i40e_hw
*hw
= &adapter
->hw
;
1798 struct i40evf_vlan_filter
*vlf
;
1799 struct i40evf_mac_filter
*f
;
1803 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
1804 &adapter
->crit_section
))
1805 usleep_range(500, 1000);
1807 i40evf_misc_irq_disable(adapter
);
1808 if (adapter
->flags
& I40EVF_FLAG_RESET_NEEDED
) {
1809 adapter
->flags
&= ~I40EVF_FLAG_RESET_NEEDED
;
1810 /* Restart the AQ here. If we have been reset but didn't
1811 * detect it, or if the PF had to reinit, our AQ will be hosed.
1813 i40evf_shutdown_adminq(hw
);
1814 i40evf_init_adminq(hw
);
1815 i40evf_request_reset(adapter
);
1817 adapter
->flags
|= I40EVF_FLAG_RESET_PENDING
;
1819 /* poll until we see the reset actually happen */
1820 for (i
= 0; i
< I40EVF_RESET_WAIT_COUNT
; i
++) {
1821 reg_val
= rd32(hw
, I40E_VF_ARQLEN1
) &
1822 I40E_VF_ARQLEN1_ARQENABLE_MASK
;
1825 usleep_range(5000, 10000);
1827 if (i
== I40EVF_RESET_WAIT_COUNT
) {
1828 dev_info(&adapter
->pdev
->dev
, "Never saw reset\n");
1829 goto continue_reset
; /* act like the reset happened */
1832 /* wait until the reset is complete and the PF is responding to us */
1833 for (i
= 0; i
< I40EVF_RESET_WAIT_COUNT
; i
++) {
1834 reg_val
= rd32(hw
, I40E_VFGEN_RSTAT
) &
1835 I40E_VFGEN_RSTAT_VFR_STATE_MASK
;
1836 if (reg_val
== I40E_VFR_VFACTIVE
)
1838 msleep(I40EVF_RESET_WAIT_MS
);
1840 pci_set_master(adapter
->pdev
);
1841 /* extra wait to make sure minimum wait is met */
1842 msleep(I40EVF_RESET_WAIT_MS
);
1843 if (i
== I40EVF_RESET_WAIT_COUNT
) {
1844 struct i40evf_mac_filter
*ftmp
;
1845 struct i40evf_vlan_filter
*fv
, *fvtmp
;
1847 /* reset never finished */
1848 dev_err(&adapter
->pdev
->dev
, "Reset never finished (%x)\n",
1850 adapter
->flags
|= I40EVF_FLAG_PF_COMMS_FAILED
;
1852 if (netif_running(adapter
->netdev
)) {
1853 set_bit(__I40E_DOWN
, &adapter
->vsi
.state
);
1854 netif_carrier_off(netdev
);
1855 netif_tx_disable(netdev
);
1856 i40evf_napi_disable_all(adapter
);
1857 i40evf_irq_disable(adapter
);
1858 i40evf_free_traffic_irqs(adapter
);
1859 i40evf_free_all_tx_resources(adapter
);
1860 i40evf_free_all_rx_resources(adapter
);
1863 /* Delete all of the filters, both MAC and VLAN. */
1864 list_for_each_entry_safe(f
, ftmp
, &adapter
->mac_filter_list
,
1870 list_for_each_entry_safe(fv
, fvtmp
, &adapter
->vlan_filter_list
,
1872 list_del(&fv
->list
);
1876 i40evf_free_misc_irq(adapter
);
1877 i40evf_reset_interrupt_capability(adapter
);
1878 i40evf_free_queues(adapter
);
1879 i40evf_free_q_vectors(adapter
);
1880 kfree(adapter
->vf_res
);
1881 i40evf_shutdown_adminq(hw
);
1882 adapter
->netdev
->flags
&= ~IFF_UP
;
1883 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
1884 adapter
->flags
&= ~I40EVF_FLAG_RESET_PENDING
;
1885 dev_info(&adapter
->pdev
->dev
, "Reset task did not complete, VF disabled\n");
1886 return; /* Do not attempt to reinit. It's dead, Jim. */
1890 if (netif_running(adapter
->netdev
)) {
1891 netif_carrier_off(netdev
);
1892 netif_tx_stop_all_queues(netdev
);
1893 i40evf_napi_disable_all(adapter
);
1895 i40evf_irq_disable(adapter
);
1897 adapter
->state
= __I40EVF_RESETTING
;
1898 adapter
->flags
&= ~I40EVF_FLAG_RESET_PENDING
;
1900 /* free the Tx/Rx rings and descriptors, might be better to just
1901 * re-use them sometime in the future
1903 i40evf_free_all_rx_resources(adapter
);
1904 i40evf_free_all_tx_resources(adapter
);
1906 /* kill and reinit the admin queue */
1907 if (i40evf_shutdown_adminq(hw
))
1908 dev_warn(&adapter
->pdev
->dev
, "Failed to shut down adminq\n");
1909 adapter
->current_op
= I40E_VIRTCHNL_OP_UNKNOWN
;
1910 err
= i40evf_init_adminq(hw
);
1912 dev_info(&adapter
->pdev
->dev
, "Failed to init adminq: %d\n",
1915 adapter
->aq_required
= I40EVF_FLAG_AQ_GET_CONFIG
;
1916 adapter
->aq_required
|= I40EVF_FLAG_AQ_MAP_VECTORS
;
1918 /* re-add all MAC filters */
1919 list_for_each_entry(f
, &adapter
->mac_filter_list
, list
) {
1922 /* re-add all VLAN filters */
1923 list_for_each_entry(vlf
, &adapter
->vlan_filter_list
, list
) {
1926 adapter
->aq_required
|= I40EVF_FLAG_AQ_ADD_MAC_FILTER
;
1927 adapter
->aq_required
|= I40EVF_FLAG_AQ_ADD_VLAN_FILTER
;
1928 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
1929 i40evf_misc_irq_enable(adapter
);
1931 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2);
1933 if (netif_running(adapter
->netdev
)) {
1934 /* allocate transmit descriptors */
1935 err
= i40evf_setup_all_tx_resources(adapter
);
1939 /* allocate receive descriptors */
1940 err
= i40evf_setup_all_rx_resources(adapter
);
1944 i40evf_configure(adapter
);
1946 err
= i40evf_up_complete(adapter
);
1950 i40evf_irq_enable(adapter
, true);
1952 adapter
->state
= __I40EVF_DOWN
;
1957 dev_err(&adapter
->pdev
->dev
, "failed to allocate resources during reinit\n");
1958 i40evf_close(adapter
->netdev
);
1962 * i40evf_adminq_task - worker thread to clean the admin queue
1963 * @work: pointer to work_struct containing our data
1965 static void i40evf_adminq_task(struct work_struct
*work
)
1967 struct i40evf_adapter
*adapter
=
1968 container_of(work
, struct i40evf_adapter
, adminq_task
);
1969 struct i40e_hw
*hw
= &adapter
->hw
;
1970 struct i40e_arq_event_info event
;
1971 struct i40e_virtchnl_msg
*v_msg
;
1976 if (adapter
->flags
& I40EVF_FLAG_PF_COMMS_FAILED
)
1979 event
.buf_len
= I40EVF_MAX_AQ_BUF_SIZE
;
1980 event
.msg_buf
= kzalloc(event
.buf_len
, GFP_KERNEL
);
1984 v_msg
= (struct i40e_virtchnl_msg
*)&event
.desc
;
1986 ret
= i40evf_clean_arq_element(hw
, &event
, &pending
);
1987 if (ret
|| !v_msg
->v_opcode
)
1988 break; /* No event to process or error cleaning ARQ */
1990 i40evf_virtchnl_completion(adapter
, v_msg
->v_opcode
,
1991 v_msg
->v_retval
, event
.msg_buf
,
1994 memset(event
.msg_buf
, 0, I40EVF_MAX_AQ_BUF_SIZE
);
1997 if ((adapter
->flags
&
1998 (I40EVF_FLAG_RESET_PENDING
| I40EVF_FLAG_RESET_NEEDED
)) ||
1999 adapter
->state
== __I40EVF_RESETTING
)
2002 /* check for error indications */
2003 val
= rd32(hw
, hw
->aq
.arq
.len
);
2005 if (val
& I40E_VF_ARQLEN1_ARQVFE_MASK
) {
2006 dev_info(&adapter
->pdev
->dev
, "ARQ VF Error detected\n");
2007 val
&= ~I40E_VF_ARQLEN1_ARQVFE_MASK
;
2009 if (val
& I40E_VF_ARQLEN1_ARQOVFL_MASK
) {
2010 dev_info(&adapter
->pdev
->dev
, "ARQ Overflow Error detected\n");
2011 val
&= ~I40E_VF_ARQLEN1_ARQOVFL_MASK
;
2013 if (val
& I40E_VF_ARQLEN1_ARQCRIT_MASK
) {
2014 dev_info(&adapter
->pdev
->dev
, "ARQ Critical Error detected\n");
2015 val
&= ~I40E_VF_ARQLEN1_ARQCRIT_MASK
;
2018 wr32(hw
, hw
->aq
.arq
.len
, val
);
2020 val
= rd32(hw
, hw
->aq
.asq
.len
);
2022 if (val
& I40E_VF_ATQLEN1_ATQVFE_MASK
) {
2023 dev_info(&adapter
->pdev
->dev
, "ASQ VF Error detected\n");
2024 val
&= ~I40E_VF_ATQLEN1_ATQVFE_MASK
;
2026 if (val
& I40E_VF_ATQLEN1_ATQOVFL_MASK
) {
2027 dev_info(&adapter
->pdev
->dev
, "ASQ Overflow Error detected\n");
2028 val
&= ~I40E_VF_ATQLEN1_ATQOVFL_MASK
;
2030 if (val
& I40E_VF_ATQLEN1_ATQCRIT_MASK
) {
2031 dev_info(&adapter
->pdev
->dev
, "ASQ Critical Error detected\n");
2032 val
&= ~I40E_VF_ATQLEN1_ATQCRIT_MASK
;
2035 wr32(hw
, hw
->aq
.asq
.len
, val
);
2038 kfree(event
.msg_buf
);
2040 /* re-enable Admin queue interrupt cause */
2041 i40evf_misc_irq_enable(adapter
);
2045 * i40evf_free_all_tx_resources - Free Tx Resources for All Queues
2046 * @adapter: board private structure
2048 * Free all transmit software resources
2050 void i40evf_free_all_tx_resources(struct i40evf_adapter
*adapter
)
2054 if (!adapter
->tx_rings
)
2057 for (i
= 0; i
< adapter
->num_active_queues
; i
++)
2058 if (adapter
->tx_rings
[i
].desc
)
2059 i40evf_free_tx_resources(&adapter
->tx_rings
[i
]);
2063 * i40evf_setup_all_tx_resources - allocate all queues Tx resources
2064 * @adapter: board private structure
2066 * If this function returns with an error, then it's possible one or
2067 * more of the rings is populated (while the rest are not). It is the
2068 * callers duty to clean those orphaned rings.
2070 * Return 0 on success, negative on failure
2072 static int i40evf_setup_all_tx_resources(struct i40evf_adapter
*adapter
)
2076 for (i
= 0; i
< adapter
->num_active_queues
; i
++) {
2077 adapter
->tx_rings
[i
].count
= adapter
->tx_desc_count
;
2078 err
= i40evf_setup_tx_descriptors(&adapter
->tx_rings
[i
]);
2081 dev_err(&adapter
->pdev
->dev
,
2082 "Allocation for Tx Queue %u failed\n", i
);
2090 * i40evf_setup_all_rx_resources - allocate all queues Rx resources
2091 * @adapter: board private structure
2093 * If this function returns with an error, then it's possible one or
2094 * more of the rings is populated (while the rest are not). It is the
2095 * callers duty to clean those orphaned rings.
2097 * Return 0 on success, negative on failure
2099 static int i40evf_setup_all_rx_resources(struct i40evf_adapter
*adapter
)
2103 for (i
= 0; i
< adapter
->num_active_queues
; i
++) {
2104 adapter
->rx_rings
[i
].count
= adapter
->rx_desc_count
;
2105 err
= i40evf_setup_rx_descriptors(&adapter
->rx_rings
[i
]);
2108 dev_err(&adapter
->pdev
->dev
,
2109 "Allocation for Rx Queue %u failed\n", i
);
2116 * i40evf_free_all_rx_resources - Free Rx Resources for All Queues
2117 * @adapter: board private structure
2119 * Free all receive software resources
2121 void i40evf_free_all_rx_resources(struct i40evf_adapter
*adapter
)
2125 if (!adapter
->rx_rings
)
2128 for (i
= 0; i
< adapter
->num_active_queues
; i
++)
2129 if (adapter
->rx_rings
[i
].desc
)
2130 i40evf_free_rx_resources(&adapter
->rx_rings
[i
]);
2134 * i40evf_open - Called when a network interface is made active
2135 * @netdev: network interface device structure
2137 * Returns 0 on success, negative value on failure
2139 * The open entry point is called when a network interface is made
2140 * active by the system (IFF_UP). At this point all resources needed
2141 * for transmit and receive operations are allocated, the interrupt
2142 * handler is registered with the OS, the watchdog timer is started,
2143 * and the stack is notified that the interface is ready.
2145 static int i40evf_open(struct net_device
*netdev
)
2147 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2150 if (adapter
->flags
& I40EVF_FLAG_PF_COMMS_FAILED
) {
2151 dev_err(&adapter
->pdev
->dev
, "Unable to open device due to PF driver failure.\n");
2155 if (adapter
->state
!= __I40EVF_DOWN
)
2158 /* allocate transmit descriptors */
2159 err
= i40evf_setup_all_tx_resources(adapter
);
2163 /* allocate receive descriptors */
2164 err
= i40evf_setup_all_rx_resources(adapter
);
2168 /* clear any pending interrupts, may auto mask */
2169 err
= i40evf_request_traffic_irqs(adapter
, netdev
->name
);
2173 i40evf_add_filter(adapter
, adapter
->hw
.mac
.addr
);
2174 i40evf_configure(adapter
);
2176 err
= i40evf_up_complete(adapter
);
2180 i40evf_irq_enable(adapter
, true);
2185 i40evf_down(adapter
);
2186 i40evf_free_traffic_irqs(adapter
);
2188 i40evf_free_all_rx_resources(adapter
);
2190 i40evf_free_all_tx_resources(adapter
);
2196 * i40evf_close - Disables a network interface
2197 * @netdev: network interface device structure
2199 * Returns 0, this is not allowed to fail
2201 * The close entry point is called when an interface is de-activated
2202 * by the OS. The hardware is still under the drivers control, but
2203 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue)
2204 * are freed, along with all transmit and receive resources.
2206 static int i40evf_close(struct net_device
*netdev
)
2208 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2210 if (adapter
->state
<= __I40EVF_DOWN_PENDING
)
2214 set_bit(__I40E_DOWN
, &adapter
->vsi
.state
);
2216 i40evf_down(adapter
);
2217 adapter
->state
= __I40EVF_DOWN_PENDING
;
2218 i40evf_free_traffic_irqs(adapter
);
2224 * i40evf_get_stats - Get System Network Statistics
2225 * @netdev: network interface device structure
2227 * Returns the address of the device statistics structure.
2228 * The statistics are actually updated from the timer callback.
2230 static struct net_device_stats
*i40evf_get_stats(struct net_device
*netdev
)
2232 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2234 /* only return the current stats */
2235 return &adapter
->net_stats
;
2239 * i40evf_change_mtu - Change the Maximum Transfer Unit
2240 * @netdev: network interface device structure
2241 * @new_mtu: new value for maximum frame size
2243 * Returns 0 on success, negative on failure
2245 static int i40evf_change_mtu(struct net_device
*netdev
, int new_mtu
)
2247 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2248 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2250 if ((new_mtu
< 68) || (max_frame
> I40E_MAX_RXBUFFER
))
2253 netdev
->mtu
= new_mtu
;
2254 adapter
->flags
|= I40EVF_FLAG_RESET_NEEDED
;
2255 schedule_work(&adapter
->reset_task
);
2260 static const struct net_device_ops i40evf_netdev_ops
= {
2261 .ndo_open
= i40evf_open
,
2262 .ndo_stop
= i40evf_close
,
2263 .ndo_start_xmit
= i40evf_xmit_frame
,
2264 .ndo_get_stats
= i40evf_get_stats
,
2265 .ndo_set_rx_mode
= i40evf_set_rx_mode
,
2266 .ndo_validate_addr
= eth_validate_addr
,
2267 .ndo_set_mac_address
= i40evf_set_mac
,
2268 .ndo_change_mtu
= i40evf_change_mtu
,
2269 .ndo_tx_timeout
= i40evf_tx_timeout
,
2270 .ndo_vlan_rx_add_vid
= i40evf_vlan_rx_add_vid
,
2271 .ndo_vlan_rx_kill_vid
= i40evf_vlan_rx_kill_vid
,
2272 #ifdef CONFIG_NET_POLL_CONTROLLER
2273 .ndo_poll_controller
= i40evf_netpoll
,
2278 * i40evf_check_reset_complete - check that VF reset is complete
2279 * @hw: pointer to hw struct
2281 * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
2283 static int i40evf_check_reset_complete(struct i40e_hw
*hw
)
2288 for (i
= 0; i
< 100; i
++) {
2289 rstat
= rd32(hw
, I40E_VFGEN_RSTAT
) &
2290 I40E_VFGEN_RSTAT_VFR_STATE_MASK
;
2291 if ((rstat
== I40E_VFR_VFACTIVE
) ||
2292 (rstat
== I40E_VFR_COMPLETED
))
2294 usleep_range(10, 20);
2300 * i40evf_process_config - Process the config information we got from the PF
2301 * @adapter: board private structure
2303 * Verify that we have a valid config struct, and set up our netdev features
2304 * and our VSI struct.
2306 int i40evf_process_config(struct i40evf_adapter
*adapter
)
2308 struct net_device
*netdev
= adapter
->netdev
;
2311 /* got VF config message back from PF, now we can parse it */
2312 for (i
= 0; i
< adapter
->vf_res
->num_vsis
; i
++) {
2313 if (adapter
->vf_res
->vsi_res
[i
].vsi_type
== I40E_VSI_SRIOV
)
2314 adapter
->vsi_res
= &adapter
->vf_res
->vsi_res
[i
];
2316 if (!adapter
->vsi_res
) {
2317 dev_err(&adapter
->pdev
->dev
, "No LAN VSI found\n");
2321 if (adapter
->vf_res
->vf_offload_flags
2322 & I40E_VIRTCHNL_VF_OFFLOAD_VLAN
) {
2323 netdev
->vlan_features
= netdev
->features
&
2324 ~(NETIF_F_HW_VLAN_CTAG_TX
|
2325 NETIF_F_HW_VLAN_CTAG_RX
|
2326 NETIF_F_HW_VLAN_CTAG_FILTER
);
2327 netdev
->features
|= NETIF_F_HW_VLAN_CTAG_TX
|
2328 NETIF_F_HW_VLAN_CTAG_RX
|
2329 NETIF_F_HW_VLAN_CTAG_FILTER
;
2331 netdev
->features
|= NETIF_F_HIGHDMA
|
2341 /* copy netdev features into list of user selectable features */
2342 netdev
->hw_features
|= netdev
->features
;
2343 netdev
->hw_features
&= ~NETIF_F_RXCSUM
;
2345 adapter
->vsi
.id
= adapter
->vsi_res
->vsi_id
;
2347 adapter
->vsi
.back
= adapter
;
2348 adapter
->vsi
.base_vector
= 1;
2349 adapter
->vsi
.work_limit
= I40E_DEFAULT_IRQ_WORK
;
2350 adapter
->vsi
.rx_itr_setting
= (I40E_ITR_DYNAMIC
|
2351 ITR_REG_TO_USEC(I40E_ITR_RX_DEF
));
2352 adapter
->vsi
.tx_itr_setting
= (I40E_ITR_DYNAMIC
|
2353 ITR_REG_TO_USEC(I40E_ITR_TX_DEF
));
2354 adapter
->vsi
.netdev
= adapter
->netdev
;
2355 adapter
->vsi
.qs_handle
= adapter
->vsi_res
->qset_handle
;
2360 * i40evf_init_task - worker thread to perform delayed initialization
2361 * @work: pointer to work_struct containing our data
2363 * This task completes the work that was begun in probe. Due to the nature
2364 * of VF-PF communications, we may need to wait tens of milliseconds to get
2365 * responses back from the PF. Rather than busy-wait in probe and bog down the
2366 * whole system, we'll do it in a task so we can sleep.
2367 * This task only runs during driver init. Once we've established
2368 * communications with the PF driver and set up our netdev, the watchdog
2371 static void i40evf_init_task(struct work_struct
*work
)
2373 struct i40evf_adapter
*adapter
= container_of(work
,
2374 struct i40evf_adapter
,
2376 struct net_device
*netdev
= adapter
->netdev
;
2377 struct i40e_hw
*hw
= &adapter
->hw
;
2378 struct pci_dev
*pdev
= adapter
->pdev
;
2381 switch (adapter
->state
) {
2382 case __I40EVF_STARTUP
:
2383 /* driver loaded, probe complete */
2384 adapter
->flags
&= ~I40EVF_FLAG_PF_COMMS_FAILED
;
2385 adapter
->flags
&= ~I40EVF_FLAG_RESET_PENDING
;
2386 err
= i40e_set_mac_type(hw
);
2388 dev_err(&pdev
->dev
, "Failed to set MAC type (%d)\n",
2392 err
= i40evf_check_reset_complete(hw
);
2394 dev_info(&pdev
->dev
, "Device is still in reset (%d), retrying\n",
2398 hw
->aq
.num_arq_entries
= I40EVF_AQ_LEN
;
2399 hw
->aq
.num_asq_entries
= I40EVF_AQ_LEN
;
2400 hw
->aq
.arq_buf_size
= I40EVF_MAX_AQ_BUF_SIZE
;
2401 hw
->aq
.asq_buf_size
= I40EVF_MAX_AQ_BUF_SIZE
;
2403 err
= i40evf_init_adminq(hw
);
2405 dev_err(&pdev
->dev
, "Failed to init Admin Queue (%d)\n",
2409 err
= i40evf_send_api_ver(adapter
);
2411 dev_err(&pdev
->dev
, "Unable to send to PF (%d)\n", err
);
2412 i40evf_shutdown_adminq(hw
);
2415 adapter
->state
= __I40EVF_INIT_VERSION_CHECK
;
2417 case __I40EVF_INIT_VERSION_CHECK
:
2418 if (!i40evf_asq_done(hw
)) {
2419 dev_err(&pdev
->dev
, "Admin queue command never completed\n");
2420 i40evf_shutdown_adminq(hw
);
2421 adapter
->state
= __I40EVF_STARTUP
;
2425 /* aq msg sent, awaiting reply */
2426 err
= i40evf_verify_api_ver(adapter
);
2428 if (err
== I40E_ERR_ADMIN_QUEUE_NO_WORK
)
2429 err
= i40evf_send_api_ver(adapter
);
2431 dev_err(&pdev
->dev
, "Unsupported PF API version %d.%d, expected %d.%d\n",
2432 adapter
->pf_version
.major
,
2433 adapter
->pf_version
.minor
,
2434 I40E_VIRTCHNL_VERSION_MAJOR
,
2435 I40E_VIRTCHNL_VERSION_MINOR
);
2438 err
= i40evf_send_vf_config_msg(adapter
);
2440 dev_err(&pdev
->dev
, "Unable to send config request (%d)\n",
2444 adapter
->state
= __I40EVF_INIT_GET_RESOURCES
;
2446 case __I40EVF_INIT_GET_RESOURCES
:
2447 /* aq msg sent, awaiting reply */
2448 if (!adapter
->vf_res
) {
2449 bufsz
= sizeof(struct i40e_virtchnl_vf_resource
) +
2451 sizeof(struct i40e_virtchnl_vsi_resource
));
2452 adapter
->vf_res
= kzalloc(bufsz
, GFP_KERNEL
);
2453 if (!adapter
->vf_res
)
2456 err
= i40evf_get_vf_config(adapter
);
2457 if (err
== I40E_ERR_ADMIN_QUEUE_NO_WORK
) {
2458 err
= i40evf_send_vf_config_msg(adapter
);
2460 } else if (err
== I40E_ERR_PARAM
) {
2461 /* We only get ERR_PARAM if the device is in a very bad
2462 * state or if we've been disabled for previous bad
2463 * behavior. Either way, we're done now.
2465 i40evf_shutdown_adminq(hw
);
2466 dev_err(&pdev
->dev
, "Unable to get VF config due to PF error condition, not retrying\n");
2470 dev_err(&pdev
->dev
, "Unable to get VF config (%d)\n",
2474 adapter
->state
= __I40EVF_INIT_SW
;
2479 if (i40evf_process_config(adapter
))
2481 adapter
->current_op
= I40E_VIRTCHNL_OP_UNKNOWN
;
2483 adapter
->flags
|= I40EVF_FLAG_RX_CSUM_ENABLED
;
2485 netdev
->netdev_ops
= &i40evf_netdev_ops
;
2486 i40evf_set_ethtool_ops(netdev
);
2487 netdev
->watchdog_timeo
= 5 * HZ
;
2489 if (!is_valid_ether_addr(adapter
->hw
.mac
.addr
)) {
2490 dev_info(&pdev
->dev
, "Invalid MAC address %pM, using random\n",
2491 adapter
->hw
.mac
.addr
);
2492 eth_hw_addr_random(netdev
);
2493 ether_addr_copy(adapter
->hw
.mac
.addr
, netdev
->dev_addr
);
2495 adapter
->flags
|= I40EVF_FLAG_ADDR_SET_BY_PF
;
2496 ether_addr_copy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
);
2497 ether_addr_copy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
);
2500 init_timer(&adapter
->watchdog_timer
);
2501 adapter
->watchdog_timer
.function
= &i40evf_watchdog_timer
;
2502 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
2503 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
2505 adapter
->num_active_queues
= min_t(int,
2506 adapter
->vsi_res
->num_queue_pairs
,
2507 (int)(num_online_cpus()));
2508 adapter
->tx_desc_count
= I40EVF_DEFAULT_TXD
;
2509 adapter
->rx_desc_count
= I40EVF_DEFAULT_RXD
;
2510 err
= i40evf_init_interrupt_scheme(adapter
);
2513 i40evf_map_rings_to_vectors(adapter
);
2514 if (adapter
->vf_res
->vf_offload_flags
&
2515 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR
)
2516 adapter
->flags
|= I40EVF_FLAG_WB_ON_ITR_CAPABLE
;
2518 if (adapter
->vf_res
->vf_offload_flags
&
2519 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR
)
2520 adapter
->flags
|= I40EVF_FLAG_WB_ON_ITR_CAPABLE
;
2522 err
= i40evf_request_misc_irq(adapter
);
2526 netif_carrier_off(netdev
);
2528 if (!adapter
->netdev_registered
) {
2529 err
= register_netdev(netdev
);
2534 adapter
->netdev_registered
= true;
2536 netif_tx_stop_all_queues(netdev
);
2538 dev_info(&pdev
->dev
, "MAC address: %pM\n", adapter
->hw
.mac
.addr
);
2539 if (netdev
->features
& NETIF_F_GRO
)
2540 dev_info(&pdev
->dev
, "GRO is enabled\n");
2542 adapter
->state
= __I40EVF_DOWN
;
2543 set_bit(__I40E_DOWN
, &adapter
->vsi
.state
);
2544 i40evf_misc_irq_enable(adapter
);
2546 if (RSS_AQ(adapter
)) {
2547 adapter
->aq_required
|= I40EVF_FLAG_AQ_CONFIGURE_RSS
;
2548 mod_timer_pending(&adapter
->watchdog_timer
, jiffies
+ 1);
2550 i40evf_init_rss(adapter
);
2554 schedule_delayed_work(&adapter
->init_task
, msecs_to_jiffies(30));
2558 i40evf_free_misc_irq(adapter
);
2560 i40evf_reset_interrupt_capability(adapter
);
2562 kfree(adapter
->vf_res
);
2563 adapter
->vf_res
= NULL
;
2565 /* Things went into the weeds, so try again later */
2566 if (++adapter
->aq_wait_count
> I40EVF_AQ_MAX_ERR
) {
2567 dev_err(&pdev
->dev
, "Failed to communicate with PF; waiting before retry\n");
2568 adapter
->flags
|= I40EVF_FLAG_PF_COMMS_FAILED
;
2569 i40evf_shutdown_adminq(hw
);
2570 adapter
->state
= __I40EVF_STARTUP
;
2571 schedule_delayed_work(&adapter
->init_task
, HZ
* 5);
2574 schedule_delayed_work(&adapter
->init_task
, HZ
);
2578 * i40evf_shutdown - Shutdown the device in preparation for a reboot
2579 * @pdev: pci device structure
2581 static void i40evf_shutdown(struct pci_dev
*pdev
)
2583 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2584 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2586 netif_device_detach(netdev
);
2588 if (netif_running(netdev
))
2589 i40evf_close(netdev
);
2591 /* Prevent the watchdog from running. */
2592 adapter
->state
= __I40EVF_REMOVE
;
2593 adapter
->aq_required
= 0;
2596 pci_save_state(pdev
);
2599 pci_disable_device(pdev
);
2603 * i40evf_probe - Device Initialization Routine
2604 * @pdev: PCI device information struct
2605 * @ent: entry in i40evf_pci_tbl
2607 * Returns 0 on success, negative on failure
2609 * i40evf_probe initializes an adapter identified by a pci_dev structure.
2610 * The OS initialization, configuring of the adapter private structure,
2611 * and a hardware reset occur.
2613 static int i40evf_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2615 struct net_device
*netdev
;
2616 struct i40evf_adapter
*adapter
= NULL
;
2617 struct i40e_hw
*hw
= NULL
;
2620 err
= pci_enable_device(pdev
);
2624 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(64));
2626 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
2629 "DMA configuration failed: 0x%x\n", err
);
2634 err
= pci_request_regions(pdev
, i40evf_driver_name
);
2637 "pci_request_regions failed 0x%x\n", err
);
2641 pci_enable_pcie_error_reporting(pdev
);
2643 pci_set_master(pdev
);
2645 netdev
= alloc_etherdev_mq(sizeof(struct i40evf_adapter
), MAX_QUEUES
);
2648 goto err_alloc_etherdev
;
2651 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2653 pci_set_drvdata(pdev
, netdev
);
2654 adapter
= netdev_priv(netdev
);
2656 adapter
->netdev
= netdev
;
2657 adapter
->pdev
= pdev
;
2662 adapter
->msg_enable
= BIT(DEFAULT_DEBUG_LEVEL_SHIFT
) - 1;
2663 adapter
->state
= __I40EVF_STARTUP
;
2665 /* Call save state here because it relies on the adapter struct. */
2666 pci_save_state(pdev
);
2668 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
2669 pci_resource_len(pdev
, 0));
2674 hw
->vendor_id
= pdev
->vendor
;
2675 hw
->device_id
= pdev
->device
;
2676 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
2677 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
2678 hw
->subsystem_device_id
= pdev
->subsystem_device
;
2679 hw
->bus
.device
= PCI_SLOT(pdev
->devfn
);
2680 hw
->bus
.func
= PCI_FUNC(pdev
->devfn
);
2682 /* set up the locks for the AQ, do this only once in probe
2683 * and destroy them only once in remove
2685 mutex_init(&hw
->aq
.asq_mutex
);
2686 mutex_init(&hw
->aq
.arq_mutex
);
2688 INIT_LIST_HEAD(&adapter
->mac_filter_list
);
2689 INIT_LIST_HEAD(&adapter
->vlan_filter_list
);
2691 INIT_WORK(&adapter
->reset_task
, i40evf_reset_task
);
2692 INIT_WORK(&adapter
->adminq_task
, i40evf_adminq_task
);
2693 INIT_WORK(&adapter
->watchdog_task
, i40evf_watchdog_task
);
2694 INIT_DELAYED_WORK(&adapter
->init_task
, i40evf_init_task
);
2695 schedule_delayed_work(&adapter
->init_task
,
2696 msecs_to_jiffies(5 * (pdev
->devfn
& 0x07)));
2701 free_netdev(netdev
);
2703 pci_release_regions(pdev
);
2706 pci_disable_device(pdev
);
2712 * i40evf_suspend - Power management suspend routine
2713 * @pdev: PCI device information struct
2716 * Called when the system (VM) is entering sleep/suspend.
2718 static int i40evf_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2720 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2721 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2724 netif_device_detach(netdev
);
2726 if (netif_running(netdev
)) {
2728 i40evf_down(adapter
);
2731 i40evf_free_misc_irq(adapter
);
2732 i40evf_reset_interrupt_capability(adapter
);
2734 retval
= pci_save_state(pdev
);
2738 pci_disable_device(pdev
);
2744 * i40evf_resume - Power management resume routine
2745 * @pdev: PCI device information struct
2747 * Called when the system (VM) is resumed from sleep/suspend.
2749 static int i40evf_resume(struct pci_dev
*pdev
)
2751 struct i40evf_adapter
*adapter
= pci_get_drvdata(pdev
);
2752 struct net_device
*netdev
= adapter
->netdev
;
2755 pci_set_power_state(pdev
, PCI_D0
);
2756 pci_restore_state(pdev
);
2757 /* pci_restore_state clears dev->state_saved so call
2758 * pci_save_state to restore it.
2760 pci_save_state(pdev
);
2762 err
= pci_enable_device_mem(pdev
);
2764 dev_err(&pdev
->dev
, "Cannot enable PCI device from suspend.\n");
2767 pci_set_master(pdev
);
2770 err
= i40evf_set_interrupt_capability(adapter
);
2773 dev_err(&pdev
->dev
, "Cannot enable MSI-X interrupts.\n");
2776 err
= i40evf_request_misc_irq(adapter
);
2779 dev_err(&pdev
->dev
, "Cannot get interrupt vector.\n");
2783 schedule_work(&adapter
->reset_task
);
2785 netif_device_attach(netdev
);
2790 #endif /* CONFIG_PM */
2792 * i40evf_remove - Device Removal Routine
2793 * @pdev: PCI device information struct
2795 * i40evf_remove is called by the PCI subsystem to alert the driver
2796 * that it should release a PCI device. The could be caused by a
2797 * Hot-Plug event, or because the driver is going to be removed from
2800 static void i40evf_remove(struct pci_dev
*pdev
)
2802 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2803 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2804 struct i40evf_mac_filter
*f
, *ftmp
;
2805 struct i40e_hw
*hw
= &adapter
->hw
;
2807 cancel_delayed_work_sync(&adapter
->init_task
);
2808 cancel_work_sync(&adapter
->reset_task
);
2810 if (adapter
->netdev_registered
) {
2811 unregister_netdev(netdev
);
2812 adapter
->netdev_registered
= false;
2815 /* Shut down all the garbage mashers on the detention level */
2816 adapter
->state
= __I40EVF_REMOVE
;
2817 adapter
->aq_required
= 0;
2818 i40evf_request_reset(adapter
);
2820 /* If the FW isn't responding, kick it once, but only once. */
2821 if (!i40evf_asq_done(hw
)) {
2822 i40evf_request_reset(adapter
);
2826 if (adapter
->msix_entries
) {
2827 i40evf_misc_irq_disable(adapter
);
2828 i40evf_free_misc_irq(adapter
);
2829 i40evf_reset_interrupt_capability(adapter
);
2830 i40evf_free_q_vectors(adapter
);
2833 if (adapter
->watchdog_timer
.function
)
2834 del_timer_sync(&adapter
->watchdog_timer
);
2836 flush_scheduled_work();
2838 /* Clear user configurations for RSS */
2839 i40evf_clear_rss_config_user(&adapter
->vsi
);
2841 if (hw
->aq
.asq
.count
)
2842 i40evf_shutdown_adminq(hw
);
2844 /* destroy the locks only once, here */
2845 mutex_destroy(&hw
->aq
.arq_mutex
);
2846 mutex_destroy(&hw
->aq
.asq_mutex
);
2848 iounmap(hw
->hw_addr
);
2849 pci_release_regions(pdev
);
2851 i40evf_free_all_tx_resources(adapter
);
2852 i40evf_free_all_rx_resources(adapter
);
2853 i40evf_free_queues(adapter
);
2854 kfree(adapter
->vf_res
);
2855 /* If we got removed before an up/down sequence, we've got a filter
2856 * hanging out there that we need to get rid of.
2858 list_for_each_entry_safe(f
, ftmp
, &adapter
->mac_filter_list
, list
) {
2862 list_for_each_entry_safe(f
, ftmp
, &adapter
->vlan_filter_list
, list
) {
2867 free_netdev(netdev
);
2869 pci_disable_pcie_error_reporting(pdev
);
2871 pci_disable_device(pdev
);
2874 static struct pci_driver i40evf_driver
= {
2875 .name
= i40evf_driver_name
,
2876 .id_table
= i40evf_pci_tbl
,
2877 .probe
= i40evf_probe
,
2878 .remove
= i40evf_remove
,
2880 .suspend
= i40evf_suspend
,
2881 .resume
= i40evf_resume
,
2883 .shutdown
= i40evf_shutdown
,
2887 * i40e_init_module - Driver Registration Routine
2889 * i40e_init_module is the first routine called when the driver is
2890 * loaded. All it does is register with the PCI subsystem.
2892 static int __init
i40evf_init_module(void)
2896 pr_info("i40evf: %s - version %s\n", i40evf_driver_string
,
2897 i40evf_driver_version
);
2899 pr_info("%s\n", i40evf_copyright
);
2901 i40evf_wq
= create_singlethread_workqueue(i40evf_driver_name
);
2903 pr_err("%s: Failed to create workqueue\n", i40evf_driver_name
);
2906 ret
= pci_register_driver(&i40evf_driver
);
2910 module_init(i40evf_init_module
);
2913 * i40e_exit_module - Driver Exit Cleanup Routine
2915 * i40e_exit_module is called just before the driver is removed
2918 static void __exit
i40evf_exit_module(void)
2920 pci_unregister_driver(&i40evf_driver
);
2921 destroy_workqueue(i40evf_wq
);
2924 module_exit(i40evf_exit_module
);