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 5
41 #define DRV_VERSION_BUILD 10
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_schedule_reset - Set the flags and schedule a reset event
177 * @adapter: board private structure
179 void i40evf_schedule_reset(struct i40evf_adapter
*adapter
)
181 if (!(adapter
->flags
&
182 (I40EVF_FLAG_RESET_PENDING
| I40EVF_FLAG_RESET_NEEDED
))) {
183 adapter
->flags
|= I40EVF_FLAG_RESET_NEEDED
;
184 schedule_work(&adapter
->reset_task
);
189 * i40evf_tx_timeout - Respond to a Tx Hang
190 * @netdev: network interface device structure
192 static void i40evf_tx_timeout(struct net_device
*netdev
)
194 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
196 adapter
->tx_timeout_count
++;
197 i40evf_schedule_reset(adapter
);
201 * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC
202 * @adapter: board private structure
204 static void i40evf_misc_irq_disable(struct i40evf_adapter
*adapter
)
206 struct i40e_hw
*hw
= &adapter
->hw
;
208 wr32(hw
, I40E_VFINT_DYN_CTL01
, 0);
211 rd32(hw
, I40E_VFGEN_RSTAT
);
213 synchronize_irq(adapter
->msix_entries
[0].vector
);
217 * i40evf_misc_irq_enable - Enable default interrupt generation settings
218 * @adapter: board private structure
220 static void i40evf_misc_irq_enable(struct i40evf_adapter
*adapter
)
222 struct i40e_hw
*hw
= &adapter
->hw
;
224 wr32(hw
, I40E_VFINT_DYN_CTL01
, I40E_VFINT_DYN_CTL01_INTENA_MASK
|
225 I40E_VFINT_DYN_CTL01_ITR_INDX_MASK
);
226 wr32(hw
, I40E_VFINT_ICR0_ENA1
, I40E_VFINT_ICR0_ENA1_ADMINQ_MASK
);
229 rd32(hw
, I40E_VFGEN_RSTAT
);
233 * i40evf_irq_disable - Mask off interrupt generation on the NIC
234 * @adapter: board private structure
236 static void i40evf_irq_disable(struct i40evf_adapter
*adapter
)
239 struct i40e_hw
*hw
= &adapter
->hw
;
241 if (!adapter
->msix_entries
)
244 for (i
= 1; i
< adapter
->num_msix_vectors
; i
++) {
245 wr32(hw
, I40E_VFINT_DYN_CTLN1(i
- 1), 0);
246 synchronize_irq(adapter
->msix_entries
[i
].vector
);
249 rd32(hw
, I40E_VFGEN_RSTAT
);
253 * i40evf_irq_enable_queues - Enable interrupt for specified queues
254 * @adapter: board private structure
255 * @mask: bitmap of queues to enable
257 void i40evf_irq_enable_queues(struct i40evf_adapter
*adapter
, u32 mask
)
259 struct i40e_hw
*hw
= &adapter
->hw
;
262 for (i
= 1; i
< adapter
->num_msix_vectors
; i
++) {
263 if (mask
& BIT(i
- 1)) {
264 wr32(hw
, I40E_VFINT_DYN_CTLN1(i
- 1),
265 I40E_VFINT_DYN_CTLN1_INTENA_MASK
|
266 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK
|
267 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK
);
273 * i40evf_fire_sw_int - Generate SW interrupt for specified vectors
274 * @adapter: board private structure
275 * @mask: bitmap of vectors to trigger
277 static void i40evf_fire_sw_int(struct i40evf_adapter
*adapter
, u32 mask
)
279 struct i40e_hw
*hw
= &adapter
->hw
;
284 dyn_ctl
= rd32(hw
, I40E_VFINT_DYN_CTL01
);
285 dyn_ctl
|= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK
|
286 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK
|
287 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK
;
288 wr32(hw
, I40E_VFINT_DYN_CTL01
, dyn_ctl
);
290 for (i
= 1; i
< adapter
->num_msix_vectors
; i
++) {
292 dyn_ctl
= rd32(hw
, I40E_VFINT_DYN_CTLN1(i
- 1));
293 dyn_ctl
|= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK
|
294 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK
|
295 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK
;
296 wr32(hw
, I40E_VFINT_DYN_CTLN1(i
- 1), dyn_ctl
);
302 * i40evf_irq_enable - Enable default interrupt generation settings
303 * @adapter: board private structure
304 * @flush: boolean value whether to run rd32()
306 void i40evf_irq_enable(struct i40evf_adapter
*adapter
, bool flush
)
308 struct i40e_hw
*hw
= &adapter
->hw
;
310 i40evf_misc_irq_enable(adapter
);
311 i40evf_irq_enable_queues(adapter
, ~0);
314 rd32(hw
, I40E_VFGEN_RSTAT
);
318 * i40evf_msix_aq - Interrupt handler for vector 0
319 * @irq: interrupt number
320 * @data: pointer to netdev
322 static irqreturn_t
i40evf_msix_aq(int irq
, void *data
)
324 struct net_device
*netdev
= data
;
325 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
326 struct i40e_hw
*hw
= &adapter
->hw
;
329 /* handle non-queue interrupts, these reads clear the registers */
330 val
= rd32(hw
, I40E_VFINT_ICR01
);
331 val
= rd32(hw
, I40E_VFINT_ICR0_ENA1
);
333 val
= rd32(hw
, I40E_VFINT_DYN_CTL01
) |
334 I40E_VFINT_DYN_CTL01_CLEARPBA_MASK
;
335 wr32(hw
, I40E_VFINT_DYN_CTL01
, val
);
337 /* schedule work on the private workqueue */
338 schedule_work(&adapter
->adminq_task
);
344 * i40evf_msix_clean_rings - MSIX mode Interrupt Handler
345 * @irq: interrupt number
346 * @data: pointer to a q_vector
348 static irqreturn_t
i40evf_msix_clean_rings(int irq
, void *data
)
350 struct i40e_q_vector
*q_vector
= data
;
352 if (!q_vector
->tx
.ring
&& !q_vector
->rx
.ring
)
355 napi_schedule_irqoff(&q_vector
->napi
);
361 * i40evf_map_vector_to_rxq - associate irqs with rx queues
362 * @adapter: board private structure
363 * @v_idx: interrupt number
364 * @r_idx: queue number
367 i40evf_map_vector_to_rxq(struct i40evf_adapter
*adapter
, int v_idx
, int r_idx
)
369 struct i40e_q_vector
*q_vector
= &adapter
->q_vectors
[v_idx
];
370 struct i40e_ring
*rx_ring
= &adapter
->rx_rings
[r_idx
];
372 rx_ring
->q_vector
= q_vector
;
373 rx_ring
->next
= q_vector
->rx
.ring
;
374 rx_ring
->vsi
= &adapter
->vsi
;
375 q_vector
->rx
.ring
= rx_ring
;
376 q_vector
->rx
.count
++;
377 q_vector
->rx
.latency_range
= I40E_LOW_LATENCY
;
378 q_vector
->itr_countdown
= ITR_COUNTDOWN_START
;
382 * i40evf_map_vector_to_txq - associate irqs with tx queues
383 * @adapter: board private structure
384 * @v_idx: interrupt number
385 * @t_idx: queue number
388 i40evf_map_vector_to_txq(struct i40evf_adapter
*adapter
, int v_idx
, int t_idx
)
390 struct i40e_q_vector
*q_vector
= &adapter
->q_vectors
[v_idx
];
391 struct i40e_ring
*tx_ring
= &adapter
->tx_rings
[t_idx
];
393 tx_ring
->q_vector
= q_vector
;
394 tx_ring
->next
= q_vector
->tx
.ring
;
395 tx_ring
->vsi
= &adapter
->vsi
;
396 q_vector
->tx
.ring
= tx_ring
;
397 q_vector
->tx
.count
++;
398 q_vector
->tx
.latency_range
= I40E_LOW_LATENCY
;
399 q_vector
->itr_countdown
= ITR_COUNTDOWN_START
;
400 q_vector
->num_ringpairs
++;
401 q_vector
->ring_mask
|= BIT(t_idx
);
405 * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors
406 * @adapter: board private structure to initialize
408 * This function maps descriptor rings to the queue-specific vectors
409 * we were allotted through the MSI-X enabling code. Ideally, we'd have
410 * one vector per ring/queue, but on a constrained vector budget, we
411 * group the rings as "efficiently" as possible. You would add new
412 * mapping configurations in here.
414 static int i40evf_map_rings_to_vectors(struct i40evf_adapter
*adapter
)
418 int rxr_idx
= 0, txr_idx
= 0;
419 int rxr_remaining
= adapter
->num_active_queues
;
420 int txr_remaining
= adapter
->num_active_queues
;
425 q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
427 /* The ideal configuration...
428 * We have enough vectors to map one per queue.
430 if (q_vectors
>= (rxr_remaining
* 2)) {
431 for (; rxr_idx
< rxr_remaining
; v_start
++, rxr_idx
++)
432 i40evf_map_vector_to_rxq(adapter
, v_start
, rxr_idx
);
434 for (; txr_idx
< txr_remaining
; v_start
++, txr_idx
++)
435 i40evf_map_vector_to_txq(adapter
, v_start
, txr_idx
);
439 /* If we don't have enough vectors for a 1-to-1
440 * mapping, we'll have to group them so there are
441 * multiple queues per vector.
442 * Re-adjusting *qpv takes care of the remainder.
444 for (i
= v_start
; i
< q_vectors
; i
++) {
445 rqpv
= DIV_ROUND_UP(rxr_remaining
, q_vectors
- i
);
446 for (j
= 0; j
< rqpv
; j
++) {
447 i40evf_map_vector_to_rxq(adapter
, i
, rxr_idx
);
452 for (i
= v_start
; i
< q_vectors
; i
++) {
453 tqpv
= DIV_ROUND_UP(txr_remaining
, q_vectors
- i
);
454 for (j
= 0; j
< tqpv
; j
++) {
455 i40evf_map_vector_to_txq(adapter
, i
, txr_idx
);
462 adapter
->aq_required
|= I40EVF_FLAG_AQ_MAP_VECTORS
;
467 #ifdef CONFIG_NET_POLL_CONTROLLER
469 * i40evf_netpoll - A Polling 'interrupt' handler
470 * @netdev: network interface device structure
472 * This is used by netconsole to send skbs without having to re-enable
473 * interrupts. It's not called while the normal interrupt routine is executing.
475 static void i40evf_netpoll(struct net_device
*netdev
)
477 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
478 int q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
481 /* if interface is down do nothing */
482 if (test_bit(__I40E_DOWN
, &adapter
->vsi
.state
))
485 for (i
= 0; i
< q_vectors
; i
++)
486 i40evf_msix_clean_rings(0, &adapter
->q_vectors
[i
]);
491 * i40evf_request_traffic_irqs - Initialize MSI-X interrupts
492 * @adapter: board private structure
494 * Allocates MSI-X vectors for tx and rx handling, and requests
495 * interrupts from the kernel.
498 i40evf_request_traffic_irqs(struct i40evf_adapter
*adapter
, char *basename
)
500 int vector
, err
, q_vectors
;
501 int rx_int_idx
= 0, tx_int_idx
= 0;
503 i40evf_irq_disable(adapter
);
504 /* Decrement for Other and TCP Timer vectors */
505 q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
507 for (vector
= 0; vector
< q_vectors
; vector
++) {
508 struct i40e_q_vector
*q_vector
= &adapter
->q_vectors
[vector
];
510 if (q_vector
->tx
.ring
&& q_vector
->rx
.ring
) {
511 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
512 "i40evf-%s-%s-%d", basename
,
513 "TxRx", rx_int_idx
++);
515 } else if (q_vector
->rx
.ring
) {
516 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
517 "i40evf-%s-%s-%d", basename
,
519 } else if (q_vector
->tx
.ring
) {
520 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
521 "i40evf-%s-%s-%d", basename
,
524 /* skip this unused q_vector */
528 adapter
->msix_entries
[vector
+ NONQ_VECS
].vector
,
529 i40evf_msix_clean_rings
,
534 dev_info(&adapter
->pdev
->dev
,
535 "Request_irq failed, error: %d\n", err
);
536 goto free_queue_irqs
;
538 /* assign the mask for this irq */
539 irq_set_affinity_hint(
540 adapter
->msix_entries
[vector
+ NONQ_VECS
].vector
,
541 q_vector
->affinity_mask
);
549 irq_set_affinity_hint(
550 adapter
->msix_entries
[vector
+ NONQ_VECS
].vector
,
552 free_irq(adapter
->msix_entries
[vector
+ NONQ_VECS
].vector
,
553 &adapter
->q_vectors
[vector
]);
559 * i40evf_request_misc_irq - Initialize MSI-X interrupts
560 * @adapter: board private structure
562 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This
563 * vector is only for the admin queue, and stays active even when the netdev
566 static int i40evf_request_misc_irq(struct i40evf_adapter
*adapter
)
568 struct net_device
*netdev
= adapter
->netdev
;
571 snprintf(adapter
->misc_vector_name
,
572 sizeof(adapter
->misc_vector_name
) - 1, "i40evf-%s:mbx",
573 dev_name(&adapter
->pdev
->dev
));
574 err
= request_irq(adapter
->msix_entries
[0].vector
,
576 adapter
->misc_vector_name
, netdev
);
578 dev_err(&adapter
->pdev
->dev
,
579 "request_irq for %s failed: %d\n",
580 adapter
->misc_vector_name
, err
);
581 free_irq(adapter
->msix_entries
[0].vector
, netdev
);
587 * i40evf_free_traffic_irqs - Free MSI-X interrupts
588 * @adapter: board private structure
590 * Frees all MSI-X vectors other than 0.
592 static void i40evf_free_traffic_irqs(struct i40evf_adapter
*adapter
)
597 q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
599 for (i
= 0; i
< q_vectors
; i
++) {
600 irq_set_affinity_hint(adapter
->msix_entries
[i
+1].vector
,
602 free_irq(adapter
->msix_entries
[i
+1].vector
,
603 &adapter
->q_vectors
[i
]);
608 * i40evf_free_misc_irq - Free MSI-X miscellaneous vector
609 * @adapter: board private structure
611 * Frees MSI-X vector 0.
613 static void i40evf_free_misc_irq(struct i40evf_adapter
*adapter
)
615 struct net_device
*netdev
= adapter
->netdev
;
617 free_irq(adapter
->msix_entries
[0].vector
, netdev
);
621 * i40evf_configure_tx - Configure Transmit Unit after Reset
622 * @adapter: board private structure
624 * Configure the Tx unit of the MAC after a reset.
626 static void i40evf_configure_tx(struct i40evf_adapter
*adapter
)
628 struct i40e_hw
*hw
= &adapter
->hw
;
631 for (i
= 0; i
< adapter
->num_active_queues
; i
++)
632 adapter
->tx_rings
[i
].tail
= hw
->hw_addr
+ I40E_QTX_TAIL1(i
);
636 * i40evf_configure_rx - Configure Receive Unit after Reset
637 * @adapter: board private structure
639 * Configure the Rx unit of the MAC after a reset.
641 static void i40evf_configure_rx(struct i40evf_adapter
*adapter
)
643 struct i40e_hw
*hw
= &adapter
->hw
;
646 for (i
= 0; i
< adapter
->num_active_queues
; i
++) {
647 adapter
->rx_rings
[i
].tail
= hw
->hw_addr
+ I40E_QRX_TAIL1(i
);
648 adapter
->rx_rings
[i
].rx_buf_len
= I40EVF_RXBUFFER_2048
;
653 * i40evf_find_vlan - Search filter list for specific vlan filter
654 * @adapter: board private structure
657 * Returns ptr to the filter object or NULL
660 i40evf_vlan_filter
*i40evf_find_vlan(struct i40evf_adapter
*adapter
, u16 vlan
)
662 struct i40evf_vlan_filter
*f
;
664 list_for_each_entry(f
, &adapter
->vlan_filter_list
, list
) {
672 * i40evf_add_vlan - Add a vlan filter to the list
673 * @adapter: board private structure
676 * Returns ptr to the filter object or NULL when no memory available.
679 i40evf_vlan_filter
*i40evf_add_vlan(struct i40evf_adapter
*adapter
, u16 vlan
)
681 struct i40evf_vlan_filter
*f
= NULL
;
684 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
685 &adapter
->crit_section
)) {
691 f
= i40evf_find_vlan(adapter
, vlan
);
693 f
= kzalloc(sizeof(*f
), GFP_ATOMIC
);
699 INIT_LIST_HEAD(&f
->list
);
700 list_add(&f
->list
, &adapter
->vlan_filter_list
);
702 adapter
->aq_required
|= I40EVF_FLAG_AQ_ADD_VLAN_FILTER
;
706 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
712 * i40evf_del_vlan - Remove a vlan filter from the list
713 * @adapter: board private structure
716 static void i40evf_del_vlan(struct i40evf_adapter
*adapter
, u16 vlan
)
718 struct i40evf_vlan_filter
*f
;
721 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
722 &adapter
->crit_section
)) {
728 f
= i40evf_find_vlan(adapter
, vlan
);
731 adapter
->aq_required
|= I40EVF_FLAG_AQ_DEL_VLAN_FILTER
;
733 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
737 * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device
738 * @netdev: network device struct
741 static int i40evf_vlan_rx_add_vid(struct net_device
*netdev
,
742 __always_unused __be16 proto
, u16 vid
)
744 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
746 if (!VLAN_ALLOWED(adapter
))
748 if (i40evf_add_vlan(adapter
, vid
) == NULL
)
754 * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device
755 * @netdev: network device struct
758 static int i40evf_vlan_rx_kill_vid(struct net_device
*netdev
,
759 __always_unused __be16 proto
, u16 vid
)
761 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
763 if (VLAN_ALLOWED(adapter
)) {
764 i40evf_del_vlan(adapter
, vid
);
771 * i40evf_find_filter - Search filter list for specific mac filter
772 * @adapter: board private structure
773 * @macaddr: the MAC address
775 * Returns ptr to the filter object or NULL
778 i40evf_mac_filter
*i40evf_find_filter(struct i40evf_adapter
*adapter
,
781 struct i40evf_mac_filter
*f
;
786 list_for_each_entry(f
, &adapter
->mac_filter_list
, list
) {
787 if (ether_addr_equal(macaddr
, f
->macaddr
))
794 * i40e_add_filter - Add a mac filter to the filter list
795 * @adapter: board private structure
796 * @macaddr: the MAC address
798 * Returns ptr to the filter object or NULL when no memory available.
801 i40evf_mac_filter
*i40evf_add_filter(struct i40evf_adapter
*adapter
,
804 struct i40evf_mac_filter
*f
;
810 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
811 &adapter
->crit_section
)) {
817 f
= i40evf_find_filter(adapter
, macaddr
);
819 f
= kzalloc(sizeof(*f
), GFP_ATOMIC
);
821 clear_bit(__I40EVF_IN_CRITICAL_TASK
,
822 &adapter
->crit_section
);
826 ether_addr_copy(f
->macaddr
, macaddr
);
828 list_add(&f
->list
, &adapter
->mac_filter_list
);
830 adapter
->aq_required
|= I40EVF_FLAG_AQ_ADD_MAC_FILTER
;
833 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
838 * i40evf_set_mac - NDO callback to set port mac address
839 * @netdev: network interface device structure
840 * @p: pointer to an address structure
842 * Returns 0 on success, negative on failure
844 static int i40evf_set_mac(struct net_device
*netdev
, void *p
)
846 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
847 struct i40e_hw
*hw
= &adapter
->hw
;
848 struct i40evf_mac_filter
*f
;
849 struct sockaddr
*addr
= p
;
851 if (!is_valid_ether_addr(addr
->sa_data
))
852 return -EADDRNOTAVAIL
;
854 if (ether_addr_equal(netdev
->dev_addr
, addr
->sa_data
))
857 if (adapter
->flags
& I40EVF_FLAG_ADDR_SET_BY_PF
)
860 f
= i40evf_find_filter(adapter
, hw
->mac
.addr
);
863 adapter
->aq_required
|= I40EVF_FLAG_AQ_DEL_MAC_FILTER
;
866 f
= i40evf_add_filter(adapter
, addr
->sa_data
);
868 ether_addr_copy(hw
->mac
.addr
, addr
->sa_data
);
869 ether_addr_copy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
);
872 return (f
== NULL
) ? -ENOMEM
: 0;
876 * i40evf_set_rx_mode - NDO callback to set the netdev filters
877 * @netdev: network interface device structure
879 static void i40evf_set_rx_mode(struct net_device
*netdev
)
881 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
882 struct i40evf_mac_filter
*f
, *ftmp
;
883 struct netdev_hw_addr
*uca
;
884 struct netdev_hw_addr
*mca
;
885 struct netdev_hw_addr
*ha
;
888 /* add addr if not already in the filter list */
889 netdev_for_each_uc_addr(uca
, netdev
) {
890 i40evf_add_filter(adapter
, uca
->addr
);
892 netdev_for_each_mc_addr(mca
, netdev
) {
893 i40evf_add_filter(adapter
, mca
->addr
);
896 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
897 &adapter
->crit_section
)) {
900 dev_err(&adapter
->pdev
->dev
,
901 "Failed to get lock in %s\n", __func__
);
905 /* remove filter if not in netdev list */
906 list_for_each_entry_safe(f
, ftmp
, &adapter
->mac_filter_list
, list
) {
907 netdev_for_each_mc_addr(mca
, netdev
)
908 if (ether_addr_equal(mca
->addr
, f
->macaddr
))
909 goto bottom_of_search_loop
;
911 netdev_for_each_uc_addr(uca
, netdev
)
912 if (ether_addr_equal(uca
->addr
, f
->macaddr
))
913 goto bottom_of_search_loop
;
915 for_each_dev_addr(netdev
, ha
)
916 if (ether_addr_equal(ha
->addr
, f
->macaddr
))
917 goto bottom_of_search_loop
;
919 if (ether_addr_equal(f
->macaddr
, adapter
->hw
.mac
.addr
))
920 goto bottom_of_search_loop
;
922 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
924 adapter
->aq_required
|= I40EVF_FLAG_AQ_DEL_MAC_FILTER
;
926 bottom_of_search_loop
:
930 if (netdev
->flags
& IFF_PROMISC
&&
931 !(adapter
->flags
& I40EVF_FLAG_PROMISC_ON
))
932 adapter
->aq_required
|= I40EVF_FLAG_AQ_REQUEST_PROMISC
;
933 else if (!(netdev
->flags
& IFF_PROMISC
) &&
934 adapter
->flags
& I40EVF_FLAG_PROMISC_ON
)
935 adapter
->aq_required
|= I40EVF_FLAG_AQ_RELEASE_PROMISC
;
937 if (netdev
->flags
& IFF_ALLMULTI
&&
938 !(adapter
->flags
& I40EVF_FLAG_ALLMULTI_ON
))
939 adapter
->aq_required
|= I40EVF_FLAG_AQ_REQUEST_ALLMULTI
;
940 else if (!(netdev
->flags
& IFF_ALLMULTI
) &&
941 adapter
->flags
& I40EVF_FLAG_ALLMULTI_ON
)
942 adapter
->aq_required
|= I40EVF_FLAG_AQ_RELEASE_ALLMULTI
;
944 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
948 * i40evf_napi_enable_all - enable NAPI on all queue vectors
949 * @adapter: board private structure
951 static void i40evf_napi_enable_all(struct i40evf_adapter
*adapter
)
954 struct i40e_q_vector
*q_vector
;
955 int q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
957 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
958 struct napi_struct
*napi
;
960 q_vector
= &adapter
->q_vectors
[q_idx
];
961 napi
= &q_vector
->napi
;
967 * i40evf_napi_disable_all - disable NAPI on all queue vectors
968 * @adapter: board private structure
970 static void i40evf_napi_disable_all(struct i40evf_adapter
*adapter
)
973 struct i40e_q_vector
*q_vector
;
974 int q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
976 for (q_idx
= 0; q_idx
< q_vectors
; q_idx
++) {
977 q_vector
= &adapter
->q_vectors
[q_idx
];
978 napi_disable(&q_vector
->napi
);
983 * i40evf_configure - set up transmit and receive data structures
984 * @adapter: board private structure
986 static void i40evf_configure(struct i40evf_adapter
*adapter
)
988 struct net_device
*netdev
= adapter
->netdev
;
991 i40evf_set_rx_mode(netdev
);
993 i40evf_configure_tx(adapter
);
994 i40evf_configure_rx(adapter
);
995 adapter
->aq_required
|= I40EVF_FLAG_AQ_CONFIGURE_QUEUES
;
997 for (i
= 0; i
< adapter
->num_active_queues
; i
++) {
998 struct i40e_ring
*ring
= &adapter
->rx_rings
[i
];
1000 i40evf_alloc_rx_buffers(ring
, I40E_DESC_UNUSED(ring
));
1005 * i40evf_up_complete - Finish the last steps of bringing up a connection
1006 * @adapter: board private structure
1008 static int i40evf_up_complete(struct i40evf_adapter
*adapter
)
1010 adapter
->state
= __I40EVF_RUNNING
;
1011 clear_bit(__I40E_DOWN
, &adapter
->vsi
.state
);
1013 i40evf_napi_enable_all(adapter
);
1015 adapter
->aq_required
|= I40EVF_FLAG_AQ_ENABLE_QUEUES
;
1016 mod_timer_pending(&adapter
->watchdog_timer
, jiffies
+ 1);
1021 * i40e_down - Shutdown the connection processing
1022 * @adapter: board private structure
1024 void i40evf_down(struct i40evf_adapter
*adapter
)
1026 struct net_device
*netdev
= adapter
->netdev
;
1027 struct i40evf_mac_filter
*f
;
1029 if (adapter
->state
<= __I40EVF_DOWN_PENDING
)
1032 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
1033 &adapter
->crit_section
))
1034 usleep_range(500, 1000);
1036 netif_carrier_off(netdev
);
1037 netif_tx_disable(netdev
);
1038 i40evf_napi_disable_all(adapter
);
1039 i40evf_irq_disable(adapter
);
1041 /* remove all MAC filters */
1042 list_for_each_entry(f
, &adapter
->mac_filter_list
, list
) {
1045 /* remove all VLAN filters */
1046 list_for_each_entry(f
, &adapter
->vlan_filter_list
, list
) {
1049 if (!(adapter
->flags
& I40EVF_FLAG_PF_COMMS_FAILED
) &&
1050 adapter
->state
!= __I40EVF_RESETTING
) {
1051 /* cancel any current operation */
1052 adapter
->current_op
= I40E_VIRTCHNL_OP_UNKNOWN
;
1053 /* Schedule operations to close down the HW. Don't wait
1054 * here for this to complete. The watchdog is still running
1055 * and it will take care of this.
1057 adapter
->aq_required
= I40EVF_FLAG_AQ_DEL_MAC_FILTER
;
1058 adapter
->aq_required
|= I40EVF_FLAG_AQ_DEL_VLAN_FILTER
;
1059 adapter
->aq_required
|= I40EVF_FLAG_AQ_DISABLE_QUEUES
;
1062 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
1066 * i40evf_acquire_msix_vectors - Setup the MSIX capability
1067 * @adapter: board private structure
1068 * @vectors: number of vectors to request
1070 * Work with the OS to set up the MSIX vectors needed.
1072 * Returns 0 on success, negative on failure
1075 i40evf_acquire_msix_vectors(struct i40evf_adapter
*adapter
, int vectors
)
1077 int err
, vector_threshold
;
1079 /* We'll want at least 3 (vector_threshold):
1080 * 0) Other (Admin Queue and link, mostly)
1084 vector_threshold
= MIN_MSIX_COUNT
;
1086 /* The more we get, the more we will assign to Tx/Rx Cleanup
1087 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1088 * Right now, we simply care about how many we'll get; we'll
1089 * set them up later while requesting irq's.
1091 err
= pci_enable_msix_range(adapter
->pdev
, adapter
->msix_entries
,
1092 vector_threshold
, vectors
);
1094 dev_err(&adapter
->pdev
->dev
, "Unable to allocate MSI-X interrupts\n");
1095 kfree(adapter
->msix_entries
);
1096 adapter
->msix_entries
= NULL
;
1100 /* Adjust for only the vectors we'll use, which is minimum
1101 * of max_msix_q_vectors + NONQ_VECS, or the number of
1102 * vectors we were allocated.
1104 adapter
->num_msix_vectors
= err
;
1109 * i40evf_free_queues - Free memory for all rings
1110 * @adapter: board private structure to initialize
1112 * Free all of the memory associated with queue pairs.
1114 static void i40evf_free_queues(struct i40evf_adapter
*adapter
)
1116 if (!adapter
->vsi_res
)
1118 kfree(adapter
->tx_rings
);
1119 adapter
->tx_rings
= NULL
;
1120 kfree(adapter
->rx_rings
);
1121 adapter
->rx_rings
= NULL
;
1125 * i40evf_alloc_queues - Allocate memory for all rings
1126 * @adapter: board private structure to initialize
1128 * We allocate one ring per queue at run-time since we don't know the
1129 * number of queues at compile-time. The polling_netdev array is
1130 * intended for Multiqueue, but should work fine with a single queue.
1132 static int i40evf_alloc_queues(struct i40evf_adapter
*adapter
)
1136 adapter
->tx_rings
= kcalloc(adapter
->num_active_queues
,
1137 sizeof(struct i40e_ring
), GFP_KERNEL
);
1138 if (!adapter
->tx_rings
)
1140 adapter
->rx_rings
= kcalloc(adapter
->num_active_queues
,
1141 sizeof(struct i40e_ring
), GFP_KERNEL
);
1142 if (!adapter
->rx_rings
)
1145 for (i
= 0; i
< adapter
->num_active_queues
; i
++) {
1146 struct i40e_ring
*tx_ring
;
1147 struct i40e_ring
*rx_ring
;
1149 tx_ring
= &adapter
->tx_rings
[i
];
1151 tx_ring
->queue_index
= i
;
1152 tx_ring
->netdev
= adapter
->netdev
;
1153 tx_ring
->dev
= &adapter
->pdev
->dev
;
1154 tx_ring
->count
= adapter
->tx_desc_count
;
1155 if (adapter
->flags
& I40E_FLAG_WB_ON_ITR_CAPABLE
)
1156 tx_ring
->flags
|= I40E_TXR_FLAGS_WB_ON_ITR
;
1158 rx_ring
= &adapter
->rx_rings
[i
];
1159 rx_ring
->queue_index
= i
;
1160 rx_ring
->netdev
= adapter
->netdev
;
1161 rx_ring
->dev
= &adapter
->pdev
->dev
;
1162 rx_ring
->count
= adapter
->rx_desc_count
;
1168 i40evf_free_queues(adapter
);
1173 * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported
1174 * @adapter: board private structure to initialize
1176 * Attempt to configure the interrupts using the best available
1177 * capabilities of the hardware and the kernel.
1179 static int i40evf_set_interrupt_capability(struct i40evf_adapter
*adapter
)
1181 int vector
, v_budget
;
1185 if (!adapter
->vsi_res
) {
1189 pairs
= adapter
->num_active_queues
;
1191 /* It's easy to be greedy for MSI-X vectors, but it really
1192 * doesn't do us much good if we have a lot more vectors
1193 * than CPU's. So let's be conservative and only ask for
1194 * (roughly) twice the number of vectors as there are CPU's.
1196 v_budget
= min_t(int, pairs
, (int)(num_online_cpus() * 2)) + NONQ_VECS
;
1197 v_budget
= min_t(int, v_budget
, (int)adapter
->vf_res
->max_vectors
);
1199 adapter
->msix_entries
= kcalloc(v_budget
,
1200 sizeof(struct msix_entry
), GFP_KERNEL
);
1201 if (!adapter
->msix_entries
) {
1206 for (vector
= 0; vector
< v_budget
; vector
++)
1207 adapter
->msix_entries
[vector
].entry
= vector
;
1209 err
= i40evf_acquire_msix_vectors(adapter
, v_budget
);
1212 netif_set_real_num_rx_queues(adapter
->netdev
, pairs
);
1213 netif_set_real_num_tx_queues(adapter
->netdev
, pairs
);
1218 * i40e_config_rss_aq - Configure RSS keys and lut by using AQ commands
1219 * @adapter: board private structure
1221 * Return 0 on success, negative on failure
1223 static int i40evf_config_rss_aq(struct i40evf_adapter
*adapter
)
1225 struct i40e_aqc_get_set_rss_key_data
*rss_key
=
1226 (struct i40e_aqc_get_set_rss_key_data
*)adapter
->rss_key
;
1227 struct i40e_hw
*hw
= &adapter
->hw
;
1230 if (adapter
->current_op
!= I40E_VIRTCHNL_OP_UNKNOWN
) {
1231 /* bail because we already have a command pending */
1232 dev_err(&adapter
->pdev
->dev
, "Cannot configure RSS, command %d pending\n",
1233 adapter
->current_op
);
1237 ret
= i40evf_aq_set_rss_key(hw
, adapter
->vsi
.id
, rss_key
);
1239 dev_err(&adapter
->pdev
->dev
, "Cannot set RSS key, err %s aq_err %s\n",
1240 i40evf_stat_str(hw
, ret
),
1241 i40evf_aq_str(hw
, hw
->aq
.asq_last_status
));
1246 ret
= i40evf_aq_set_rss_lut(hw
, adapter
->vsi
.id
, false,
1247 adapter
->rss_lut
, adapter
->rss_lut_size
);
1249 dev_err(&adapter
->pdev
->dev
, "Cannot set RSS lut, err %s aq_err %s\n",
1250 i40evf_stat_str(hw
, ret
),
1251 i40evf_aq_str(hw
, hw
->aq
.asq_last_status
));
1259 * i40evf_config_rss_reg - Configure RSS keys and lut by writing registers
1260 * @adapter: board private structure
1262 * Returns 0 on success, negative on failure
1264 static int i40evf_config_rss_reg(struct i40evf_adapter
*adapter
)
1266 struct i40e_hw
*hw
= &adapter
->hw
;
1270 dw
= (u32
*)adapter
->rss_key
;
1271 for (i
= 0; i
<= adapter
->rss_key_size
/ 4; i
++)
1272 wr32(hw
, I40E_VFQF_HKEY(i
), dw
[i
]);
1274 dw
= (u32
*)adapter
->rss_lut
;
1275 for (i
= 0; i
<= adapter
->rss_lut_size
/ 4; i
++)
1276 wr32(hw
, I40E_VFQF_HLUT(i
), dw
[i
]);
1284 * i40evf_config_rss - Configure RSS keys and lut
1285 * @adapter: board private structure
1287 * Returns 0 on success, negative on failure
1289 int i40evf_config_rss(struct i40evf_adapter
*adapter
)
1292 if (RSS_PF(adapter
)) {
1293 adapter
->aq_required
|= I40EVF_FLAG_AQ_SET_RSS_LUT
|
1294 I40EVF_FLAG_AQ_SET_RSS_KEY
;
1296 } else if (RSS_AQ(adapter
)) {
1297 return i40evf_config_rss_aq(adapter
);
1299 return i40evf_config_rss_reg(adapter
);
1304 * i40evf_fill_rss_lut - Fill the lut with default values
1305 * @adapter: board private structure
1307 static void i40evf_fill_rss_lut(struct i40evf_adapter
*adapter
)
1311 for (i
= 0; i
< adapter
->rss_lut_size
; i
++)
1312 adapter
->rss_lut
[i
] = i
% adapter
->num_active_queues
;
1316 * i40evf_init_rss - Prepare for RSS
1317 * @adapter: board private structure
1319 * Return 0 on success, negative on failure
1321 static int i40evf_init_rss(struct i40evf_adapter
*adapter
)
1323 struct i40e_hw
*hw
= &adapter
->hw
;
1326 if (!RSS_PF(adapter
)) {
1327 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
1328 if (adapter
->vf_res
->vf_offload_flags
&
1329 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2
)
1330 adapter
->hena
= I40E_DEFAULT_RSS_HENA_EXPANDED
;
1332 adapter
->hena
= I40E_DEFAULT_RSS_HENA
;
1334 wr32(hw
, I40E_VFQF_HENA(0), (u32
)adapter
->hena
);
1335 wr32(hw
, I40E_VFQF_HENA(1), (u32
)(adapter
->hena
>> 32));
1338 i40evf_fill_rss_lut(adapter
);
1340 netdev_rss_key_fill((void *)adapter
->rss_key
, adapter
->rss_key_size
);
1341 ret
= i40evf_config_rss(adapter
);
1347 * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors
1348 * @adapter: board private structure to initialize
1350 * We allocate one q_vector per queue interrupt. If allocation fails we
1353 static int i40evf_alloc_q_vectors(struct i40evf_adapter
*adapter
)
1355 int q_idx
= 0, num_q_vectors
;
1356 struct i40e_q_vector
*q_vector
;
1358 num_q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
1359 adapter
->q_vectors
= kcalloc(num_q_vectors
, sizeof(*q_vector
),
1361 if (!adapter
->q_vectors
)
1364 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
1365 q_vector
= &adapter
->q_vectors
[q_idx
];
1366 q_vector
->adapter
= adapter
;
1367 q_vector
->vsi
= &adapter
->vsi
;
1368 q_vector
->v_idx
= q_idx
;
1369 netif_napi_add(adapter
->netdev
, &q_vector
->napi
,
1370 i40evf_napi_poll
, NAPI_POLL_WEIGHT
);
1377 * i40evf_free_q_vectors - Free memory allocated for interrupt vectors
1378 * @adapter: board private structure to initialize
1380 * This function frees the memory allocated to the q_vectors. In addition if
1381 * NAPI is enabled it will delete any references to the NAPI struct prior
1382 * to freeing the q_vector.
1384 static void i40evf_free_q_vectors(struct i40evf_adapter
*adapter
)
1386 int q_idx
, num_q_vectors
;
1389 num_q_vectors
= adapter
->num_msix_vectors
- NONQ_VECS
;
1390 napi_vectors
= adapter
->num_active_queues
;
1392 for (q_idx
= 0; q_idx
< num_q_vectors
; q_idx
++) {
1393 struct i40e_q_vector
*q_vector
= &adapter
->q_vectors
[q_idx
];
1394 if (q_idx
< napi_vectors
)
1395 netif_napi_del(&q_vector
->napi
);
1397 kfree(adapter
->q_vectors
);
1401 * i40evf_reset_interrupt_capability - Reset MSIX setup
1402 * @adapter: board private structure
1405 void i40evf_reset_interrupt_capability(struct i40evf_adapter
*adapter
)
1407 pci_disable_msix(adapter
->pdev
);
1408 kfree(adapter
->msix_entries
);
1409 adapter
->msix_entries
= NULL
;
1413 * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init
1414 * @adapter: board private structure to initialize
1417 int i40evf_init_interrupt_scheme(struct i40evf_adapter
*adapter
)
1421 err
= i40evf_set_interrupt_capability(adapter
);
1423 dev_err(&adapter
->pdev
->dev
,
1424 "Unable to setup interrupt capabilities\n");
1425 goto err_set_interrupt
;
1428 err
= i40evf_alloc_q_vectors(adapter
);
1430 dev_err(&adapter
->pdev
->dev
,
1431 "Unable to allocate memory for queue vectors\n");
1432 goto err_alloc_q_vectors
;
1435 err
= i40evf_alloc_queues(adapter
);
1437 dev_err(&adapter
->pdev
->dev
,
1438 "Unable to allocate memory for queues\n");
1439 goto err_alloc_queues
;
1442 dev_info(&adapter
->pdev
->dev
, "Multiqueue %s: Queue pair count = %u",
1443 (adapter
->num_active_queues
> 1) ? "Enabled" : "Disabled",
1444 adapter
->num_active_queues
);
1448 i40evf_free_q_vectors(adapter
);
1449 err_alloc_q_vectors
:
1450 i40evf_reset_interrupt_capability(adapter
);
1456 * i40evf_free_rss - Free memory used by RSS structs
1457 * @adapter: board private structure
1459 static void i40evf_free_rss(struct i40evf_adapter
*adapter
)
1461 kfree(adapter
->rss_key
);
1462 adapter
->rss_key
= NULL
;
1464 kfree(adapter
->rss_lut
);
1465 adapter
->rss_lut
= NULL
;
1469 * i40evf_watchdog_timer - Periodic call-back timer
1470 * @data: pointer to adapter disguised as unsigned long
1472 static void i40evf_watchdog_timer(unsigned long data
)
1474 struct i40evf_adapter
*adapter
= (struct i40evf_adapter
*)data
;
1476 schedule_work(&adapter
->watchdog_task
);
1477 /* timer will be rescheduled in watchdog task */
1481 * i40evf_watchdog_task - Periodic call-back task
1482 * @work: pointer to work_struct
1484 static void i40evf_watchdog_task(struct work_struct
*work
)
1486 struct i40evf_adapter
*adapter
= container_of(work
,
1487 struct i40evf_adapter
,
1489 struct i40e_hw
*hw
= &adapter
->hw
;
1492 if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
))
1493 goto restart_watchdog
;
1495 if (adapter
->flags
& I40EVF_FLAG_PF_COMMS_FAILED
) {
1496 reg_val
= rd32(hw
, I40E_VFGEN_RSTAT
) &
1497 I40E_VFGEN_RSTAT_VFR_STATE_MASK
;
1498 if ((reg_val
== I40E_VFR_VFACTIVE
) ||
1499 (reg_val
== I40E_VFR_COMPLETED
)) {
1500 /* A chance for redemption! */
1501 dev_err(&adapter
->pdev
->dev
, "Hardware came out of reset. Attempting reinit.\n");
1502 adapter
->state
= __I40EVF_STARTUP
;
1503 adapter
->flags
&= ~I40EVF_FLAG_PF_COMMS_FAILED
;
1504 schedule_delayed_work(&adapter
->init_task
, 10);
1505 clear_bit(__I40EVF_IN_CRITICAL_TASK
,
1506 &adapter
->crit_section
);
1507 /* Don't reschedule the watchdog, since we've restarted
1508 * the init task. When init_task contacts the PF and
1509 * gets everything set up again, it'll restart the
1510 * watchdog for us. Down, boy. Sit. Stay. Woof.
1514 adapter
->aq_required
= 0;
1515 adapter
->current_op
= I40E_VIRTCHNL_OP_UNKNOWN
;
1519 if ((adapter
->state
< __I40EVF_DOWN
) ||
1520 (adapter
->flags
& I40EVF_FLAG_RESET_PENDING
))
1523 /* check for reset */
1524 reg_val
= rd32(hw
, I40E_VF_ARQLEN1
) & I40E_VF_ARQLEN1_ARQENABLE_MASK
;
1525 if (!(adapter
->flags
& I40EVF_FLAG_RESET_PENDING
) && !reg_val
) {
1526 adapter
->state
= __I40EVF_RESETTING
;
1527 adapter
->flags
|= I40EVF_FLAG_RESET_PENDING
;
1528 dev_err(&adapter
->pdev
->dev
, "Hardware reset detected\n");
1529 schedule_work(&adapter
->reset_task
);
1530 adapter
->aq_required
= 0;
1531 adapter
->current_op
= I40E_VIRTCHNL_OP_UNKNOWN
;
1535 /* Process admin queue tasks. After init, everything gets done
1536 * here so we don't race on the admin queue.
1538 if (adapter
->current_op
) {
1539 if (!i40evf_asq_done(hw
)) {
1540 dev_dbg(&adapter
->pdev
->dev
, "Admin queue timeout\n");
1541 i40evf_send_api_ver(adapter
);
1545 if (adapter
->aq_required
& I40EVF_FLAG_AQ_GET_CONFIG
) {
1546 i40evf_send_vf_config_msg(adapter
);
1550 if (adapter
->aq_required
& I40EVF_FLAG_AQ_DISABLE_QUEUES
) {
1551 i40evf_disable_queues(adapter
);
1555 if (adapter
->aq_required
& I40EVF_FLAG_AQ_MAP_VECTORS
) {
1556 i40evf_map_queues(adapter
);
1560 if (adapter
->aq_required
& I40EVF_FLAG_AQ_ADD_MAC_FILTER
) {
1561 i40evf_add_ether_addrs(adapter
);
1565 if (adapter
->aq_required
& I40EVF_FLAG_AQ_ADD_VLAN_FILTER
) {
1566 i40evf_add_vlans(adapter
);
1570 if (adapter
->aq_required
& I40EVF_FLAG_AQ_DEL_MAC_FILTER
) {
1571 i40evf_del_ether_addrs(adapter
);
1575 if (adapter
->aq_required
& I40EVF_FLAG_AQ_DEL_VLAN_FILTER
) {
1576 i40evf_del_vlans(adapter
);
1580 if (adapter
->aq_required
& I40EVF_FLAG_AQ_CONFIGURE_QUEUES
) {
1581 i40evf_configure_queues(adapter
);
1585 if (adapter
->aq_required
& I40EVF_FLAG_AQ_ENABLE_QUEUES
) {
1586 i40evf_enable_queues(adapter
);
1590 if (adapter
->aq_required
& I40EVF_FLAG_AQ_CONFIGURE_RSS
) {
1591 /* This message goes straight to the firmware, not the
1592 * PF, so we don't have to set current_op as we will
1593 * not get a response through the ARQ.
1595 i40evf_init_rss(adapter
);
1596 adapter
->aq_required
&= ~I40EVF_FLAG_AQ_CONFIGURE_RSS
;
1599 if (adapter
->aq_required
& I40EVF_FLAG_AQ_GET_HENA
) {
1600 i40evf_get_hena(adapter
);
1603 if (adapter
->aq_required
& I40EVF_FLAG_AQ_SET_HENA
) {
1604 i40evf_set_hena(adapter
);
1607 if (adapter
->aq_required
& I40EVF_FLAG_AQ_SET_RSS_KEY
) {
1608 i40evf_set_rss_key(adapter
);
1611 if (adapter
->aq_required
& I40EVF_FLAG_AQ_SET_RSS_LUT
) {
1612 i40evf_set_rss_lut(adapter
);
1616 if (adapter
->aq_required
& I40EVF_FLAG_AQ_REQUEST_PROMISC
) {
1617 i40evf_set_promiscuous(adapter
, I40E_FLAG_VF_UNICAST_PROMISC
|
1618 I40E_FLAG_VF_MULTICAST_PROMISC
);
1622 if (adapter
->aq_required
& I40EVF_FLAG_AQ_REQUEST_ALLMULTI
) {
1623 i40evf_set_promiscuous(adapter
, I40E_FLAG_VF_MULTICAST_PROMISC
);
1627 if ((adapter
->aq_required
& I40EVF_FLAG_AQ_RELEASE_PROMISC
) &&
1628 (adapter
->aq_required
& I40EVF_FLAG_AQ_RELEASE_ALLMULTI
)) {
1629 i40evf_set_promiscuous(adapter
, 0);
1633 if (adapter
->state
== __I40EVF_RUNNING
)
1634 i40evf_request_stats(adapter
);
1636 if (adapter
->state
== __I40EVF_RUNNING
) {
1637 i40evf_irq_enable_queues(adapter
, ~0);
1638 i40evf_fire_sw_int(adapter
, 0xFF);
1640 i40evf_fire_sw_int(adapter
, 0x1);
1643 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
1645 if (adapter
->state
== __I40EVF_REMOVE
)
1647 if (adapter
->aq_required
)
1648 mod_timer(&adapter
->watchdog_timer
,
1649 jiffies
+ msecs_to_jiffies(20));
1651 mod_timer(&adapter
->watchdog_timer
, jiffies
+ (HZ
* 2));
1652 schedule_work(&adapter
->adminq_task
);
1655 #define I40EVF_RESET_WAIT_MS 10
1656 #define I40EVF_RESET_WAIT_COUNT 500
1658 * i40evf_reset_task - Call-back task to handle hardware reset
1659 * @work: pointer to work_struct
1661 * During reset we need to shut down and reinitialize the admin queue
1662 * before we can use it to communicate with the PF again. We also clear
1663 * and reinit the rings because that context is lost as well.
1665 static void i40evf_reset_task(struct work_struct
*work
)
1667 struct i40evf_adapter
*adapter
= container_of(work
,
1668 struct i40evf_adapter
,
1670 struct net_device
*netdev
= adapter
->netdev
;
1671 struct i40e_hw
*hw
= &adapter
->hw
;
1672 struct i40evf_vlan_filter
*vlf
;
1673 struct i40evf_mac_filter
*f
;
1677 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK
,
1678 &adapter
->crit_section
))
1679 usleep_range(500, 1000);
1681 i40evf_misc_irq_disable(adapter
);
1682 if (adapter
->flags
& I40EVF_FLAG_RESET_NEEDED
) {
1683 adapter
->flags
&= ~I40EVF_FLAG_RESET_NEEDED
;
1684 /* Restart the AQ here. If we have been reset but didn't
1685 * detect it, or if the PF had to reinit, our AQ will be hosed.
1687 i40evf_shutdown_adminq(hw
);
1688 i40evf_init_adminq(hw
);
1689 i40evf_request_reset(adapter
);
1691 adapter
->flags
|= I40EVF_FLAG_RESET_PENDING
;
1693 /* poll until we see the reset actually happen */
1694 for (i
= 0; i
< I40EVF_RESET_WAIT_COUNT
; i
++) {
1695 reg_val
= rd32(hw
, I40E_VF_ARQLEN1
) &
1696 I40E_VF_ARQLEN1_ARQENABLE_MASK
;
1699 usleep_range(5000, 10000);
1701 if (i
== I40EVF_RESET_WAIT_COUNT
) {
1702 dev_info(&adapter
->pdev
->dev
, "Never saw reset\n");
1703 goto continue_reset
; /* act like the reset happened */
1706 /* wait until the reset is complete and the PF is responding to us */
1707 for (i
= 0; i
< I40EVF_RESET_WAIT_COUNT
; i
++) {
1708 reg_val
= rd32(hw
, I40E_VFGEN_RSTAT
) &
1709 I40E_VFGEN_RSTAT_VFR_STATE_MASK
;
1710 if (reg_val
== I40E_VFR_VFACTIVE
)
1712 msleep(I40EVF_RESET_WAIT_MS
);
1714 pci_set_master(adapter
->pdev
);
1715 /* extra wait to make sure minimum wait is met */
1716 msleep(I40EVF_RESET_WAIT_MS
);
1717 if (i
== I40EVF_RESET_WAIT_COUNT
) {
1718 struct i40evf_mac_filter
*ftmp
;
1719 struct i40evf_vlan_filter
*fv
, *fvtmp
;
1721 /* reset never finished */
1722 dev_err(&adapter
->pdev
->dev
, "Reset never finished (%x)\n",
1724 adapter
->flags
|= I40EVF_FLAG_PF_COMMS_FAILED
;
1726 if (netif_running(adapter
->netdev
)) {
1727 set_bit(__I40E_DOWN
, &adapter
->vsi
.state
);
1728 netif_carrier_off(netdev
);
1729 netif_tx_disable(netdev
);
1730 i40evf_napi_disable_all(adapter
);
1731 i40evf_irq_disable(adapter
);
1732 i40evf_free_traffic_irqs(adapter
);
1733 i40evf_free_all_tx_resources(adapter
);
1734 i40evf_free_all_rx_resources(adapter
);
1737 /* Delete all of the filters, both MAC and VLAN. */
1738 list_for_each_entry_safe(f
, ftmp
, &adapter
->mac_filter_list
,
1744 list_for_each_entry_safe(fv
, fvtmp
, &adapter
->vlan_filter_list
,
1746 list_del(&fv
->list
);
1750 i40evf_free_misc_irq(adapter
);
1751 i40evf_reset_interrupt_capability(adapter
);
1752 i40evf_free_queues(adapter
);
1753 i40evf_free_q_vectors(adapter
);
1754 kfree(adapter
->vf_res
);
1755 i40evf_shutdown_adminq(hw
);
1756 adapter
->netdev
->flags
&= ~IFF_UP
;
1757 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
1758 adapter
->flags
&= ~I40EVF_FLAG_RESET_PENDING
;
1759 adapter
->state
= __I40EVF_DOWN
;
1760 dev_info(&adapter
->pdev
->dev
, "Reset task did not complete, VF disabled\n");
1761 return; /* Do not attempt to reinit. It's dead, Jim. */
1765 if (netif_running(adapter
->netdev
)) {
1766 netif_carrier_off(netdev
);
1767 netif_tx_stop_all_queues(netdev
);
1768 i40evf_napi_disable_all(adapter
);
1770 i40evf_irq_disable(adapter
);
1772 adapter
->state
= __I40EVF_RESETTING
;
1773 adapter
->flags
&= ~I40EVF_FLAG_RESET_PENDING
;
1775 /* free the Tx/Rx rings and descriptors, might be better to just
1776 * re-use them sometime in the future
1778 i40evf_free_all_rx_resources(adapter
);
1779 i40evf_free_all_tx_resources(adapter
);
1781 /* kill and reinit the admin queue */
1782 if (i40evf_shutdown_adminq(hw
))
1783 dev_warn(&adapter
->pdev
->dev
, "Failed to shut down adminq\n");
1784 adapter
->current_op
= I40E_VIRTCHNL_OP_UNKNOWN
;
1785 err
= i40evf_init_adminq(hw
);
1787 dev_info(&adapter
->pdev
->dev
, "Failed to init adminq: %d\n",
1790 adapter
->aq_required
= I40EVF_FLAG_AQ_GET_CONFIG
;
1791 adapter
->aq_required
|= I40EVF_FLAG_AQ_MAP_VECTORS
;
1793 /* re-add all MAC filters */
1794 list_for_each_entry(f
, &adapter
->mac_filter_list
, list
) {
1797 /* re-add all VLAN filters */
1798 list_for_each_entry(vlf
, &adapter
->vlan_filter_list
, list
) {
1801 adapter
->aq_required
|= I40EVF_FLAG_AQ_ADD_MAC_FILTER
;
1802 adapter
->aq_required
|= I40EVF_FLAG_AQ_ADD_VLAN_FILTER
;
1803 clear_bit(__I40EVF_IN_CRITICAL_TASK
, &adapter
->crit_section
);
1804 i40evf_misc_irq_enable(adapter
);
1806 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2);
1808 if (netif_running(adapter
->netdev
)) {
1809 /* allocate transmit descriptors */
1810 err
= i40evf_setup_all_tx_resources(adapter
);
1814 /* allocate receive descriptors */
1815 err
= i40evf_setup_all_rx_resources(adapter
);
1819 i40evf_configure(adapter
);
1821 err
= i40evf_up_complete(adapter
);
1825 i40evf_irq_enable(adapter
, true);
1827 adapter
->state
= __I40EVF_DOWN
;
1832 dev_err(&adapter
->pdev
->dev
, "failed to allocate resources during reinit\n");
1833 i40evf_close(adapter
->netdev
);
1837 * i40evf_adminq_task - worker thread to clean the admin queue
1838 * @work: pointer to work_struct containing our data
1840 static void i40evf_adminq_task(struct work_struct
*work
)
1842 struct i40evf_adapter
*adapter
=
1843 container_of(work
, struct i40evf_adapter
, adminq_task
);
1844 struct i40e_hw
*hw
= &adapter
->hw
;
1845 struct i40e_arq_event_info event
;
1846 struct i40e_virtchnl_msg
*v_msg
;
1851 if (adapter
->flags
& I40EVF_FLAG_PF_COMMS_FAILED
)
1854 event
.buf_len
= I40EVF_MAX_AQ_BUF_SIZE
;
1855 event
.msg_buf
= kzalloc(event
.buf_len
, GFP_KERNEL
);
1859 v_msg
= (struct i40e_virtchnl_msg
*)&event
.desc
;
1861 ret
= i40evf_clean_arq_element(hw
, &event
, &pending
);
1862 if (ret
|| !v_msg
->v_opcode
)
1863 break; /* No event to process or error cleaning ARQ */
1865 i40evf_virtchnl_completion(adapter
, v_msg
->v_opcode
,
1866 v_msg
->v_retval
, event
.msg_buf
,
1869 memset(event
.msg_buf
, 0, I40EVF_MAX_AQ_BUF_SIZE
);
1872 if ((adapter
->flags
&
1873 (I40EVF_FLAG_RESET_PENDING
| I40EVF_FLAG_RESET_NEEDED
)) ||
1874 adapter
->state
== __I40EVF_RESETTING
)
1877 /* check for error indications */
1878 val
= rd32(hw
, hw
->aq
.arq
.len
);
1879 if (val
== 0xdeadbeef) /* indicates device in reset */
1882 if (val
& I40E_VF_ARQLEN1_ARQVFE_MASK
) {
1883 dev_info(&adapter
->pdev
->dev
, "ARQ VF Error detected\n");
1884 val
&= ~I40E_VF_ARQLEN1_ARQVFE_MASK
;
1886 if (val
& I40E_VF_ARQLEN1_ARQOVFL_MASK
) {
1887 dev_info(&adapter
->pdev
->dev
, "ARQ Overflow Error detected\n");
1888 val
&= ~I40E_VF_ARQLEN1_ARQOVFL_MASK
;
1890 if (val
& I40E_VF_ARQLEN1_ARQCRIT_MASK
) {
1891 dev_info(&adapter
->pdev
->dev
, "ARQ Critical Error detected\n");
1892 val
&= ~I40E_VF_ARQLEN1_ARQCRIT_MASK
;
1895 wr32(hw
, hw
->aq
.arq
.len
, val
);
1897 val
= rd32(hw
, hw
->aq
.asq
.len
);
1899 if (val
& I40E_VF_ATQLEN1_ATQVFE_MASK
) {
1900 dev_info(&adapter
->pdev
->dev
, "ASQ VF Error detected\n");
1901 val
&= ~I40E_VF_ATQLEN1_ATQVFE_MASK
;
1903 if (val
& I40E_VF_ATQLEN1_ATQOVFL_MASK
) {
1904 dev_info(&adapter
->pdev
->dev
, "ASQ Overflow Error detected\n");
1905 val
&= ~I40E_VF_ATQLEN1_ATQOVFL_MASK
;
1907 if (val
& I40E_VF_ATQLEN1_ATQCRIT_MASK
) {
1908 dev_info(&adapter
->pdev
->dev
, "ASQ Critical Error detected\n");
1909 val
&= ~I40E_VF_ATQLEN1_ATQCRIT_MASK
;
1912 wr32(hw
, hw
->aq
.asq
.len
, val
);
1915 kfree(event
.msg_buf
);
1917 /* re-enable Admin queue interrupt cause */
1918 i40evf_misc_irq_enable(adapter
);
1922 * i40evf_free_all_tx_resources - Free Tx Resources for All Queues
1923 * @adapter: board private structure
1925 * Free all transmit software resources
1927 void i40evf_free_all_tx_resources(struct i40evf_adapter
*adapter
)
1931 if (!adapter
->tx_rings
)
1934 for (i
= 0; i
< adapter
->num_active_queues
; i
++)
1935 if (adapter
->tx_rings
[i
].desc
)
1936 i40evf_free_tx_resources(&adapter
->tx_rings
[i
]);
1940 * i40evf_setup_all_tx_resources - allocate all queues Tx resources
1941 * @adapter: board private structure
1943 * If this function returns with an error, then it's possible one or
1944 * more of the rings is populated (while the rest are not). It is the
1945 * callers duty to clean those orphaned rings.
1947 * Return 0 on success, negative on failure
1949 static int i40evf_setup_all_tx_resources(struct i40evf_adapter
*adapter
)
1953 for (i
= 0; i
< adapter
->num_active_queues
; i
++) {
1954 adapter
->tx_rings
[i
].count
= adapter
->tx_desc_count
;
1955 err
= i40evf_setup_tx_descriptors(&adapter
->tx_rings
[i
]);
1958 dev_err(&adapter
->pdev
->dev
,
1959 "Allocation for Tx Queue %u failed\n", i
);
1967 * i40evf_setup_all_rx_resources - allocate all queues Rx resources
1968 * @adapter: board private structure
1970 * If this function returns with an error, then it's possible one or
1971 * more of the rings is populated (while the rest are not). It is the
1972 * callers duty to clean those orphaned rings.
1974 * Return 0 on success, negative on failure
1976 static int i40evf_setup_all_rx_resources(struct i40evf_adapter
*adapter
)
1980 for (i
= 0; i
< adapter
->num_active_queues
; i
++) {
1981 adapter
->rx_rings
[i
].count
= adapter
->rx_desc_count
;
1982 err
= i40evf_setup_rx_descriptors(&adapter
->rx_rings
[i
]);
1985 dev_err(&adapter
->pdev
->dev
,
1986 "Allocation for Rx Queue %u failed\n", i
);
1993 * i40evf_free_all_rx_resources - Free Rx Resources for All Queues
1994 * @adapter: board private structure
1996 * Free all receive software resources
1998 void i40evf_free_all_rx_resources(struct i40evf_adapter
*adapter
)
2002 if (!adapter
->rx_rings
)
2005 for (i
= 0; i
< adapter
->num_active_queues
; i
++)
2006 if (adapter
->rx_rings
[i
].desc
)
2007 i40evf_free_rx_resources(&adapter
->rx_rings
[i
]);
2011 * i40evf_open - Called when a network interface is made active
2012 * @netdev: network interface device structure
2014 * Returns 0 on success, negative value on failure
2016 * The open entry point is called when a network interface is made
2017 * active by the system (IFF_UP). At this point all resources needed
2018 * for transmit and receive operations are allocated, the interrupt
2019 * handler is registered with the OS, the watchdog timer is started,
2020 * and the stack is notified that the interface is ready.
2022 static int i40evf_open(struct net_device
*netdev
)
2024 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2027 if (adapter
->flags
& I40EVF_FLAG_PF_COMMS_FAILED
) {
2028 dev_err(&adapter
->pdev
->dev
, "Unable to open device due to PF driver failure.\n");
2032 if (adapter
->state
!= __I40EVF_DOWN
)
2035 /* allocate transmit descriptors */
2036 err
= i40evf_setup_all_tx_resources(adapter
);
2040 /* allocate receive descriptors */
2041 err
= i40evf_setup_all_rx_resources(adapter
);
2045 /* clear any pending interrupts, may auto mask */
2046 err
= i40evf_request_traffic_irqs(adapter
, netdev
->name
);
2050 i40evf_add_filter(adapter
, adapter
->hw
.mac
.addr
);
2051 i40evf_configure(adapter
);
2053 err
= i40evf_up_complete(adapter
);
2057 i40evf_irq_enable(adapter
, true);
2062 i40evf_down(adapter
);
2063 i40evf_free_traffic_irqs(adapter
);
2065 i40evf_free_all_rx_resources(adapter
);
2067 i40evf_free_all_tx_resources(adapter
);
2073 * i40evf_close - Disables a network interface
2074 * @netdev: network interface device structure
2076 * Returns 0, this is not allowed to fail
2078 * The close entry point is called when an interface is de-activated
2079 * by the OS. The hardware is still under the drivers control, but
2080 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue)
2081 * are freed, along with all transmit and receive resources.
2083 static int i40evf_close(struct net_device
*netdev
)
2085 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2087 if (adapter
->state
<= __I40EVF_DOWN_PENDING
)
2091 set_bit(__I40E_DOWN
, &adapter
->vsi
.state
);
2093 i40evf_down(adapter
);
2094 adapter
->state
= __I40EVF_DOWN_PENDING
;
2095 i40evf_free_traffic_irqs(adapter
);
2101 * i40evf_get_stats - Get System Network Statistics
2102 * @netdev: network interface device structure
2104 * Returns the address of the device statistics structure.
2105 * The statistics are actually updated from the timer callback.
2107 static struct net_device_stats
*i40evf_get_stats(struct net_device
*netdev
)
2109 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2111 /* only return the current stats */
2112 return &adapter
->net_stats
;
2116 * i40evf_change_mtu - Change the Maximum Transfer Unit
2117 * @netdev: network interface device structure
2118 * @new_mtu: new value for maximum frame size
2120 * Returns 0 on success, negative on failure
2122 static int i40evf_change_mtu(struct net_device
*netdev
, int new_mtu
)
2124 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2125 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
2127 if ((new_mtu
< 68) || (max_frame
> I40E_MAX_RXBUFFER
))
2130 netdev
->mtu
= new_mtu
;
2131 adapter
->flags
|= I40EVF_FLAG_RESET_NEEDED
;
2132 schedule_work(&adapter
->reset_task
);
2137 #define I40EVF_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_TX |\
2138 NETIF_F_HW_VLAN_CTAG_RX |\
2139 NETIF_F_HW_VLAN_CTAG_FILTER)
2142 * i40evf_fix_features - fix up the netdev feature bits
2143 * @netdev: our net device
2144 * @features: desired feature bits
2146 * Returns fixed-up features bits
2148 static netdev_features_t
i40evf_fix_features(struct net_device
*netdev
,
2149 netdev_features_t features
)
2151 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2153 features
&= ~I40EVF_VLAN_FEATURES
;
2154 if (adapter
->vf_res
->vf_offload_flags
& I40E_VIRTCHNL_VF_OFFLOAD_VLAN
)
2155 features
|= I40EVF_VLAN_FEATURES
;
2159 static const struct net_device_ops i40evf_netdev_ops
= {
2160 .ndo_open
= i40evf_open
,
2161 .ndo_stop
= i40evf_close
,
2162 .ndo_start_xmit
= i40evf_xmit_frame
,
2163 .ndo_get_stats
= i40evf_get_stats
,
2164 .ndo_set_rx_mode
= i40evf_set_rx_mode
,
2165 .ndo_validate_addr
= eth_validate_addr
,
2166 .ndo_set_mac_address
= i40evf_set_mac
,
2167 .ndo_change_mtu
= i40evf_change_mtu
,
2168 .ndo_tx_timeout
= i40evf_tx_timeout
,
2169 .ndo_vlan_rx_add_vid
= i40evf_vlan_rx_add_vid
,
2170 .ndo_vlan_rx_kill_vid
= i40evf_vlan_rx_kill_vid
,
2171 .ndo_fix_features
= i40evf_fix_features
,
2172 #ifdef CONFIG_NET_POLL_CONTROLLER
2173 .ndo_poll_controller
= i40evf_netpoll
,
2178 * i40evf_check_reset_complete - check that VF reset is complete
2179 * @hw: pointer to hw struct
2181 * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
2183 static int i40evf_check_reset_complete(struct i40e_hw
*hw
)
2188 for (i
= 0; i
< 100; i
++) {
2189 rstat
= rd32(hw
, I40E_VFGEN_RSTAT
) &
2190 I40E_VFGEN_RSTAT_VFR_STATE_MASK
;
2191 if ((rstat
== I40E_VFR_VFACTIVE
) ||
2192 (rstat
== I40E_VFR_COMPLETED
))
2194 usleep_range(10, 20);
2200 * i40evf_process_config - Process the config information we got from the PF
2201 * @adapter: board private structure
2203 * Verify that we have a valid config struct, and set up our netdev features
2204 * and our VSI struct.
2206 int i40evf_process_config(struct i40evf_adapter
*adapter
)
2208 struct i40e_virtchnl_vf_resource
*vfres
= adapter
->vf_res
;
2209 struct net_device
*netdev
= adapter
->netdev
;
2210 struct i40e_vsi
*vsi
= &adapter
->vsi
;
2213 /* got VF config message back from PF, now we can parse it */
2214 for (i
= 0; i
< vfres
->num_vsis
; i
++) {
2215 if (vfres
->vsi_res
[i
].vsi_type
== I40E_VSI_SRIOV
)
2216 adapter
->vsi_res
= &vfres
->vsi_res
[i
];
2218 if (!adapter
->vsi_res
) {
2219 dev_err(&adapter
->pdev
->dev
, "No LAN VSI found\n");
2223 netdev
->hw_enc_features
|= NETIF_F_SG
|
2227 NETIF_F_SOFT_FEATURES
|
2232 NETIF_F_GSO_GRE_CSUM
|
2233 NETIF_F_GSO_IPXIP4
|
2234 NETIF_F_GSO_UDP_TUNNEL
|
2235 NETIF_F_GSO_UDP_TUNNEL_CSUM
|
2236 NETIF_F_GSO_PARTIAL
|
2242 if (!(adapter
->flags
& I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE
))
2243 netdev
->gso_partial_features
|= NETIF_F_GSO_UDP_TUNNEL_CSUM
;
2245 netdev
->gso_partial_features
|= NETIF_F_GSO_GRE_CSUM
;
2247 /* record features VLANs can make use of */
2248 netdev
->vlan_features
|= netdev
->hw_enc_features
|
2249 NETIF_F_TSO_MANGLEID
;
2251 /* Write features and hw_features separately to avoid polluting
2252 * with, or dropping, features that are set when we registgered.
2254 netdev
->hw_features
|= netdev
->hw_enc_features
;
2256 netdev
->features
|= netdev
->hw_enc_features
| I40EVF_VLAN_FEATURES
;
2257 netdev
->hw_enc_features
|= NETIF_F_TSO_MANGLEID
;
2259 /* disable VLAN features if not supported */
2260 if (!(vfres
->vf_offload_flags
& I40E_VIRTCHNL_VF_OFFLOAD_VLAN
))
2261 netdev
->features
^= I40EVF_VLAN_FEATURES
;
2263 adapter
->vsi
.id
= adapter
->vsi_res
->vsi_id
;
2265 adapter
->vsi
.back
= adapter
;
2266 adapter
->vsi
.base_vector
= 1;
2267 adapter
->vsi
.work_limit
= I40E_DEFAULT_IRQ_WORK
;
2268 adapter
->vsi
.rx_itr_setting
= (I40E_ITR_DYNAMIC
|
2269 ITR_REG_TO_USEC(I40E_ITR_RX_DEF
));
2270 adapter
->vsi
.tx_itr_setting
= (I40E_ITR_DYNAMIC
|
2271 ITR_REG_TO_USEC(I40E_ITR_TX_DEF
));
2272 vsi
->netdev
= adapter
->netdev
;
2273 vsi
->qs_handle
= adapter
->vsi_res
->qset_handle
;
2274 if (vfres
->vf_offload_flags
& I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF
) {
2275 adapter
->rss_key_size
= vfres
->rss_key_size
;
2276 adapter
->rss_lut_size
= vfres
->rss_lut_size
;
2278 adapter
->rss_key_size
= I40EVF_HKEY_ARRAY_SIZE
;
2279 adapter
->rss_lut_size
= I40EVF_HLUT_ARRAY_SIZE
;
2286 * i40evf_init_task - worker thread to perform delayed initialization
2287 * @work: pointer to work_struct containing our data
2289 * This task completes the work that was begun in probe. Due to the nature
2290 * of VF-PF communications, we may need to wait tens of milliseconds to get
2291 * responses back from the PF. Rather than busy-wait in probe and bog down the
2292 * whole system, we'll do it in a task so we can sleep.
2293 * This task only runs during driver init. Once we've established
2294 * communications with the PF driver and set up our netdev, the watchdog
2297 static void i40evf_init_task(struct work_struct
*work
)
2299 struct i40evf_adapter
*adapter
= container_of(work
,
2300 struct i40evf_adapter
,
2302 struct net_device
*netdev
= adapter
->netdev
;
2303 struct i40e_hw
*hw
= &adapter
->hw
;
2304 struct pci_dev
*pdev
= adapter
->pdev
;
2307 switch (adapter
->state
) {
2308 case __I40EVF_STARTUP
:
2309 /* driver loaded, probe complete */
2310 adapter
->flags
&= ~I40EVF_FLAG_PF_COMMS_FAILED
;
2311 adapter
->flags
&= ~I40EVF_FLAG_RESET_PENDING
;
2312 err
= i40e_set_mac_type(hw
);
2314 dev_err(&pdev
->dev
, "Failed to set MAC type (%d)\n",
2318 err
= i40evf_check_reset_complete(hw
);
2320 dev_info(&pdev
->dev
, "Device is still in reset (%d), retrying\n",
2324 hw
->aq
.num_arq_entries
= I40EVF_AQ_LEN
;
2325 hw
->aq
.num_asq_entries
= I40EVF_AQ_LEN
;
2326 hw
->aq
.arq_buf_size
= I40EVF_MAX_AQ_BUF_SIZE
;
2327 hw
->aq
.asq_buf_size
= I40EVF_MAX_AQ_BUF_SIZE
;
2329 err
= i40evf_init_adminq(hw
);
2331 dev_err(&pdev
->dev
, "Failed to init Admin Queue (%d)\n",
2335 err
= i40evf_send_api_ver(adapter
);
2337 dev_err(&pdev
->dev
, "Unable to send to PF (%d)\n", err
);
2338 i40evf_shutdown_adminq(hw
);
2341 adapter
->state
= __I40EVF_INIT_VERSION_CHECK
;
2343 case __I40EVF_INIT_VERSION_CHECK
:
2344 if (!i40evf_asq_done(hw
)) {
2345 dev_err(&pdev
->dev
, "Admin queue command never completed\n");
2346 i40evf_shutdown_adminq(hw
);
2347 adapter
->state
= __I40EVF_STARTUP
;
2351 /* aq msg sent, awaiting reply */
2352 err
= i40evf_verify_api_ver(adapter
);
2354 if (err
== I40E_ERR_ADMIN_QUEUE_NO_WORK
)
2355 err
= i40evf_send_api_ver(adapter
);
2357 dev_err(&pdev
->dev
, "Unsupported PF API version %d.%d, expected %d.%d\n",
2358 adapter
->pf_version
.major
,
2359 adapter
->pf_version
.minor
,
2360 I40E_VIRTCHNL_VERSION_MAJOR
,
2361 I40E_VIRTCHNL_VERSION_MINOR
);
2364 err
= i40evf_send_vf_config_msg(adapter
);
2366 dev_err(&pdev
->dev
, "Unable to send config request (%d)\n",
2370 adapter
->state
= __I40EVF_INIT_GET_RESOURCES
;
2372 case __I40EVF_INIT_GET_RESOURCES
:
2373 /* aq msg sent, awaiting reply */
2374 if (!adapter
->vf_res
) {
2375 bufsz
= sizeof(struct i40e_virtchnl_vf_resource
) +
2377 sizeof(struct i40e_virtchnl_vsi_resource
));
2378 adapter
->vf_res
= kzalloc(bufsz
, GFP_KERNEL
);
2379 if (!adapter
->vf_res
)
2382 err
= i40evf_get_vf_config(adapter
);
2383 if (err
== I40E_ERR_ADMIN_QUEUE_NO_WORK
) {
2384 err
= i40evf_send_vf_config_msg(adapter
);
2386 } else if (err
== I40E_ERR_PARAM
) {
2387 /* We only get ERR_PARAM if the device is in a very bad
2388 * state or if we've been disabled for previous bad
2389 * behavior. Either way, we're done now.
2391 i40evf_shutdown_adminq(hw
);
2392 dev_err(&pdev
->dev
, "Unable to get VF config due to PF error condition, not retrying\n");
2396 dev_err(&pdev
->dev
, "Unable to get VF config (%d)\n",
2400 adapter
->state
= __I40EVF_INIT_SW
;
2406 if (hw
->mac
.type
== I40E_MAC_X722_VF
)
2407 adapter
->flags
|= I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE
;
2409 if (i40evf_process_config(adapter
))
2411 adapter
->current_op
= I40E_VIRTCHNL_OP_UNKNOWN
;
2413 adapter
->flags
|= I40EVF_FLAG_RX_CSUM_ENABLED
;
2415 netdev
->netdev_ops
= &i40evf_netdev_ops
;
2416 i40evf_set_ethtool_ops(netdev
);
2417 netdev
->watchdog_timeo
= 5 * HZ
;
2419 if (!is_valid_ether_addr(adapter
->hw
.mac
.addr
)) {
2420 dev_info(&pdev
->dev
, "Invalid MAC address %pM, using random\n",
2421 adapter
->hw
.mac
.addr
);
2422 eth_hw_addr_random(netdev
);
2423 ether_addr_copy(adapter
->hw
.mac
.addr
, netdev
->dev_addr
);
2425 adapter
->flags
|= I40EVF_FLAG_ADDR_SET_BY_PF
;
2426 ether_addr_copy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
);
2427 ether_addr_copy(netdev
->perm_addr
, adapter
->hw
.mac
.addr
);
2430 init_timer(&adapter
->watchdog_timer
);
2431 adapter
->watchdog_timer
.function
= &i40evf_watchdog_timer
;
2432 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
2433 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
2435 adapter
->num_active_queues
= min_t(int,
2436 adapter
->vsi_res
->num_queue_pairs
,
2437 (int)(num_online_cpus()));
2438 adapter
->tx_desc_count
= I40EVF_DEFAULT_TXD
;
2439 adapter
->rx_desc_count
= I40EVF_DEFAULT_RXD
;
2440 err
= i40evf_init_interrupt_scheme(adapter
);
2443 i40evf_map_rings_to_vectors(adapter
);
2444 if (adapter
->vf_res
->vf_offload_flags
&
2445 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR
)
2446 adapter
->flags
|= I40EVF_FLAG_WB_ON_ITR_CAPABLE
;
2448 err
= i40evf_request_misc_irq(adapter
);
2452 netif_carrier_off(netdev
);
2454 if (!adapter
->netdev_registered
) {
2455 err
= register_netdev(netdev
);
2460 adapter
->netdev_registered
= true;
2462 netif_tx_stop_all_queues(netdev
);
2464 dev_info(&pdev
->dev
, "MAC address: %pM\n", adapter
->hw
.mac
.addr
);
2465 if (netdev
->features
& NETIF_F_GRO
)
2466 dev_info(&pdev
->dev
, "GRO is enabled\n");
2468 adapter
->state
= __I40EVF_DOWN
;
2469 set_bit(__I40E_DOWN
, &adapter
->vsi
.state
);
2470 i40evf_misc_irq_enable(adapter
);
2472 adapter
->rss_key
= kzalloc(adapter
->rss_key_size
, GFP_KERNEL
);
2473 adapter
->rss_lut
= kzalloc(adapter
->rss_lut_size
, GFP_KERNEL
);
2474 if (!adapter
->rss_key
|| !adapter
->rss_lut
)
2477 if (RSS_AQ(adapter
)) {
2478 adapter
->aq_required
|= I40EVF_FLAG_AQ_CONFIGURE_RSS
;
2479 mod_timer_pending(&adapter
->watchdog_timer
, jiffies
+ 1);
2481 i40evf_init_rss(adapter
);
2485 schedule_delayed_work(&adapter
->init_task
, msecs_to_jiffies(30));
2488 i40evf_free_rss(adapter
);
2490 i40evf_free_misc_irq(adapter
);
2492 i40evf_reset_interrupt_capability(adapter
);
2494 kfree(adapter
->vf_res
);
2495 adapter
->vf_res
= NULL
;
2497 /* Things went into the weeds, so try again later */
2498 if (++adapter
->aq_wait_count
> I40EVF_AQ_MAX_ERR
) {
2499 dev_err(&pdev
->dev
, "Failed to communicate with PF; waiting before retry\n");
2500 adapter
->flags
|= I40EVF_FLAG_PF_COMMS_FAILED
;
2501 i40evf_shutdown_adminq(hw
);
2502 adapter
->state
= __I40EVF_STARTUP
;
2503 schedule_delayed_work(&adapter
->init_task
, HZ
* 5);
2506 schedule_delayed_work(&adapter
->init_task
, HZ
);
2510 * i40evf_shutdown - Shutdown the device in preparation for a reboot
2511 * @pdev: pci device structure
2513 static void i40evf_shutdown(struct pci_dev
*pdev
)
2515 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2516 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2518 netif_device_detach(netdev
);
2520 if (netif_running(netdev
))
2521 i40evf_close(netdev
);
2523 /* Prevent the watchdog from running. */
2524 adapter
->state
= __I40EVF_REMOVE
;
2525 adapter
->aq_required
= 0;
2528 pci_save_state(pdev
);
2531 pci_disable_device(pdev
);
2535 * i40evf_probe - Device Initialization Routine
2536 * @pdev: PCI device information struct
2537 * @ent: entry in i40evf_pci_tbl
2539 * Returns 0 on success, negative on failure
2541 * i40evf_probe initializes an adapter identified by a pci_dev structure.
2542 * The OS initialization, configuring of the adapter private structure,
2543 * and a hardware reset occur.
2545 static int i40evf_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2547 struct net_device
*netdev
;
2548 struct i40evf_adapter
*adapter
= NULL
;
2549 struct i40e_hw
*hw
= NULL
;
2552 err
= pci_enable_device(pdev
);
2556 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(64));
2558 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
2561 "DMA configuration failed: 0x%x\n", err
);
2566 err
= pci_request_regions(pdev
, i40evf_driver_name
);
2569 "pci_request_regions failed 0x%x\n", err
);
2573 pci_enable_pcie_error_reporting(pdev
);
2575 pci_set_master(pdev
);
2577 netdev
= alloc_etherdev_mq(sizeof(struct i40evf_adapter
), MAX_QUEUES
);
2580 goto err_alloc_etherdev
;
2583 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2585 pci_set_drvdata(pdev
, netdev
);
2586 adapter
= netdev_priv(netdev
);
2588 adapter
->netdev
= netdev
;
2589 adapter
->pdev
= pdev
;
2594 adapter
->msg_enable
= BIT(DEFAULT_DEBUG_LEVEL_SHIFT
) - 1;
2595 adapter
->state
= __I40EVF_STARTUP
;
2597 /* Call save state here because it relies on the adapter struct. */
2598 pci_save_state(pdev
);
2600 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
2601 pci_resource_len(pdev
, 0));
2606 hw
->vendor_id
= pdev
->vendor
;
2607 hw
->device_id
= pdev
->device
;
2608 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
2609 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
2610 hw
->subsystem_device_id
= pdev
->subsystem_device
;
2611 hw
->bus
.device
= PCI_SLOT(pdev
->devfn
);
2612 hw
->bus
.func
= PCI_FUNC(pdev
->devfn
);
2614 /* set up the locks for the AQ, do this only once in probe
2615 * and destroy them only once in remove
2617 mutex_init(&hw
->aq
.asq_mutex
);
2618 mutex_init(&hw
->aq
.arq_mutex
);
2620 INIT_LIST_HEAD(&adapter
->mac_filter_list
);
2621 INIT_LIST_HEAD(&adapter
->vlan_filter_list
);
2623 INIT_WORK(&adapter
->reset_task
, i40evf_reset_task
);
2624 INIT_WORK(&adapter
->adminq_task
, i40evf_adminq_task
);
2625 INIT_WORK(&adapter
->watchdog_task
, i40evf_watchdog_task
);
2626 INIT_DELAYED_WORK(&adapter
->init_task
, i40evf_init_task
);
2627 schedule_delayed_work(&adapter
->init_task
,
2628 msecs_to_jiffies(5 * (pdev
->devfn
& 0x07)));
2633 free_netdev(netdev
);
2635 pci_release_regions(pdev
);
2638 pci_disable_device(pdev
);
2644 * i40evf_suspend - Power management suspend routine
2645 * @pdev: PCI device information struct
2648 * Called when the system (VM) is entering sleep/suspend.
2650 static int i40evf_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2652 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2653 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2656 netif_device_detach(netdev
);
2658 if (netif_running(netdev
)) {
2660 i40evf_down(adapter
);
2663 i40evf_free_misc_irq(adapter
);
2664 i40evf_reset_interrupt_capability(adapter
);
2666 retval
= pci_save_state(pdev
);
2670 pci_disable_device(pdev
);
2676 * i40evf_resume - Power management resume routine
2677 * @pdev: PCI device information struct
2679 * Called when the system (VM) is resumed from sleep/suspend.
2681 static int i40evf_resume(struct pci_dev
*pdev
)
2683 struct i40evf_adapter
*adapter
= pci_get_drvdata(pdev
);
2684 struct net_device
*netdev
= adapter
->netdev
;
2687 pci_set_power_state(pdev
, PCI_D0
);
2688 pci_restore_state(pdev
);
2689 /* pci_restore_state clears dev->state_saved so call
2690 * pci_save_state to restore it.
2692 pci_save_state(pdev
);
2694 err
= pci_enable_device_mem(pdev
);
2696 dev_err(&pdev
->dev
, "Cannot enable PCI device from suspend.\n");
2699 pci_set_master(pdev
);
2702 err
= i40evf_set_interrupt_capability(adapter
);
2705 dev_err(&pdev
->dev
, "Cannot enable MSI-X interrupts.\n");
2708 err
= i40evf_request_misc_irq(adapter
);
2711 dev_err(&pdev
->dev
, "Cannot get interrupt vector.\n");
2715 schedule_work(&adapter
->reset_task
);
2717 netif_device_attach(netdev
);
2722 #endif /* CONFIG_PM */
2724 * i40evf_remove - Device Removal Routine
2725 * @pdev: PCI device information struct
2727 * i40evf_remove is called by the PCI subsystem to alert the driver
2728 * that it should release a PCI device. The could be caused by a
2729 * Hot-Plug event, or because the driver is going to be removed from
2732 static void i40evf_remove(struct pci_dev
*pdev
)
2734 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2735 struct i40evf_adapter
*adapter
= netdev_priv(netdev
);
2736 struct i40evf_mac_filter
*f
, *ftmp
;
2737 struct i40e_hw
*hw
= &adapter
->hw
;
2739 cancel_delayed_work_sync(&adapter
->init_task
);
2740 cancel_work_sync(&adapter
->reset_task
);
2742 if (adapter
->netdev_registered
) {
2743 unregister_netdev(netdev
);
2744 adapter
->netdev_registered
= false;
2747 /* Shut down all the garbage mashers on the detention level */
2748 adapter
->state
= __I40EVF_REMOVE
;
2749 adapter
->aq_required
= 0;
2750 i40evf_request_reset(adapter
);
2752 /* If the FW isn't responding, kick it once, but only once. */
2753 if (!i40evf_asq_done(hw
)) {
2754 i40evf_request_reset(adapter
);
2758 if (adapter
->msix_entries
) {
2759 i40evf_misc_irq_disable(adapter
);
2760 i40evf_free_misc_irq(adapter
);
2761 i40evf_reset_interrupt_capability(adapter
);
2762 i40evf_free_q_vectors(adapter
);
2765 if (adapter
->watchdog_timer
.function
)
2766 del_timer_sync(&adapter
->watchdog_timer
);
2768 flush_scheduled_work();
2770 i40evf_free_rss(adapter
);
2772 if (hw
->aq
.asq
.count
)
2773 i40evf_shutdown_adminq(hw
);
2775 /* destroy the locks only once, here */
2776 mutex_destroy(&hw
->aq
.arq_mutex
);
2777 mutex_destroy(&hw
->aq
.asq_mutex
);
2779 iounmap(hw
->hw_addr
);
2780 pci_release_regions(pdev
);
2781 i40evf_free_all_tx_resources(adapter
);
2782 i40evf_free_all_rx_resources(adapter
);
2783 i40evf_free_queues(adapter
);
2784 kfree(adapter
->vf_res
);
2785 /* If we got removed before an up/down sequence, we've got a filter
2786 * hanging out there that we need to get rid of.
2788 list_for_each_entry_safe(f
, ftmp
, &adapter
->mac_filter_list
, list
) {
2792 list_for_each_entry_safe(f
, ftmp
, &adapter
->vlan_filter_list
, list
) {
2797 free_netdev(netdev
);
2799 pci_disable_pcie_error_reporting(pdev
);
2801 pci_disable_device(pdev
);
2804 static struct pci_driver i40evf_driver
= {
2805 .name
= i40evf_driver_name
,
2806 .id_table
= i40evf_pci_tbl
,
2807 .probe
= i40evf_probe
,
2808 .remove
= i40evf_remove
,
2810 .suspend
= i40evf_suspend
,
2811 .resume
= i40evf_resume
,
2813 .shutdown
= i40evf_shutdown
,
2817 * i40e_init_module - Driver Registration Routine
2819 * i40e_init_module is the first routine called when the driver is
2820 * loaded. All it does is register with the PCI subsystem.
2822 static int __init
i40evf_init_module(void)
2826 pr_info("i40evf: %s - version %s\n", i40evf_driver_string
,
2827 i40evf_driver_version
);
2829 pr_info("%s\n", i40evf_copyright
);
2831 i40evf_wq
= create_singlethread_workqueue(i40evf_driver_name
);
2833 pr_err("%s: Failed to create workqueue\n", i40evf_driver_name
);
2836 ret
= pci_register_driver(&i40evf_driver
);
2840 module_init(i40evf_init_module
);
2843 * i40e_exit_module - Driver Exit Cleanup Routine
2845 * i40e_exit_module is called just before the driver is removed
2848 static void __exit
i40evf_exit_module(void)
2850 pci_unregister_driver(&i40evf_driver
);
2851 destroy_workqueue(i40evf_wq
);
2854 module_exit(i40evf_exit_module
);