Merge remote-tracking branch 'omap_dss2/for-next'
[deliverable/linux.git] / drivers / net / ethernet / intel / fm10k / fm10k_netdev.c
CommitLineData
86641094 1/* Intel(R) Ethernet Switch Host Interface Driver
9de6a1a6 2 * Copyright(c) 2013 - 2016 Intel Corporation.
0e7b3644
AD
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * The full GNU General Public License is included in this distribution in
14 * the file called "COPYING".
15 *
16 * Contact Information:
17 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
18 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
19 */
20
21#include "fm10k.h"
3abaae42 22#include <linux/vmalloc.h>
f174cdbe 23#include <net/udp_tunnel.h>
3abaae42
AD
24
25/**
26 * fm10k_setup_tx_resources - allocate Tx resources (Descriptors)
27 * @tx_ring: tx descriptor ring (for a specific queue) to setup
28 *
29 * Return 0 on success, negative on failure
30 **/
31int fm10k_setup_tx_resources(struct fm10k_ring *tx_ring)
32{
33 struct device *dev = tx_ring->dev;
34 int size;
35
36 size = sizeof(struct fm10k_tx_buffer) * tx_ring->count;
37
38 tx_ring->tx_buffer = vzalloc(size);
39 if (!tx_ring->tx_buffer)
40 goto err;
41
42 u64_stats_init(&tx_ring->syncp);
43
44 /* round up to nearest 4K */
45 tx_ring->size = tx_ring->count * sizeof(struct fm10k_tx_desc);
46 tx_ring->size = ALIGN(tx_ring->size, 4096);
47
48 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
49 &tx_ring->dma, GFP_KERNEL);
50 if (!tx_ring->desc)
51 goto err;
52
53 return 0;
54
55err:
56 vfree(tx_ring->tx_buffer);
57 tx_ring->tx_buffer = NULL;
58 return -ENOMEM;
59}
60
61/**
62 * fm10k_setup_all_tx_resources - allocate all queues Tx resources
63 * @interface: board private structure
64 *
65 * If this function returns with an error, then it's possible one or
66 * more of the rings is populated (while the rest are not). It is the
67 * callers duty to clean those orphaned rings.
68 *
69 * Return 0 on success, negative on failure
70 **/
71static int fm10k_setup_all_tx_resources(struct fm10k_intfc *interface)
72{
73 int i, err = 0;
74
75 for (i = 0; i < interface->num_tx_queues; i++) {
76 err = fm10k_setup_tx_resources(interface->tx_ring[i]);
77 if (!err)
78 continue;
79
80 netif_err(interface, probe, interface->netdev,
81 "Allocation for Tx Queue %u failed\n", i);
82 goto err_setup_tx;
83 }
84
85 return 0;
86err_setup_tx:
87 /* rewind the index freeing the rings as we go */
88 while (i--)
89 fm10k_free_tx_resources(interface->tx_ring[i]);
90 return err;
91}
92
93/**
94 * fm10k_setup_rx_resources - allocate Rx resources (Descriptors)
95 * @rx_ring: rx descriptor ring (for a specific queue) to setup
96 *
97 * Returns 0 on success, negative on failure
98 **/
99int fm10k_setup_rx_resources(struct fm10k_ring *rx_ring)
100{
101 struct device *dev = rx_ring->dev;
102 int size;
103
104 size = sizeof(struct fm10k_rx_buffer) * rx_ring->count;
105
106 rx_ring->rx_buffer = vzalloc(size);
107 if (!rx_ring->rx_buffer)
108 goto err;
109
110 u64_stats_init(&rx_ring->syncp);
111
112 /* Round up to nearest 4K */
113 rx_ring->size = rx_ring->count * sizeof(union fm10k_rx_desc);
114 rx_ring->size = ALIGN(rx_ring->size, 4096);
115
116 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
117 &rx_ring->dma, GFP_KERNEL);
118 if (!rx_ring->desc)
119 goto err;
120
121 return 0;
122err:
123 vfree(rx_ring->rx_buffer);
124 rx_ring->rx_buffer = NULL;
125 return -ENOMEM;
126}
127
128/**
129 * fm10k_setup_all_rx_resources - allocate all queues Rx resources
130 * @interface: board private structure
131 *
132 * If this function returns with an error, then it's possible one or
133 * more of the rings is populated (while the rest are not). It is the
134 * callers duty to clean those orphaned rings.
135 *
136 * Return 0 on success, negative on failure
137 **/
138static int fm10k_setup_all_rx_resources(struct fm10k_intfc *interface)
139{
140 int i, err = 0;
141
142 for (i = 0; i < interface->num_rx_queues; i++) {
143 err = fm10k_setup_rx_resources(interface->rx_ring[i]);
144 if (!err)
145 continue;
146
147 netif_err(interface, probe, interface->netdev,
148 "Allocation for Rx Queue %u failed\n", i);
149 goto err_setup_rx;
150 }
151
152 return 0;
153err_setup_rx:
154 /* rewind the index freeing the rings as we go */
155 while (i--)
156 fm10k_free_rx_resources(interface->rx_ring[i]);
157 return err;
158}
159
160void fm10k_unmap_and_free_tx_resource(struct fm10k_ring *ring,
161 struct fm10k_tx_buffer *tx_buffer)
162{
163 if (tx_buffer->skb) {
164 dev_kfree_skb_any(tx_buffer->skb);
165 if (dma_unmap_len(tx_buffer, len))
166 dma_unmap_single(ring->dev,
167 dma_unmap_addr(tx_buffer, dma),
168 dma_unmap_len(tx_buffer, len),
169 DMA_TO_DEVICE);
170 } else if (dma_unmap_len(tx_buffer, len)) {
171 dma_unmap_page(ring->dev,
172 dma_unmap_addr(tx_buffer, dma),
173 dma_unmap_len(tx_buffer, len),
174 DMA_TO_DEVICE);
175 }
176 tx_buffer->next_to_watch = NULL;
177 tx_buffer->skb = NULL;
178 dma_unmap_len_set(tx_buffer, len, 0);
179 /* tx_buffer must be completely set up in the transmit path */
180}
181
182/**
183 * fm10k_clean_tx_ring - Free Tx Buffers
184 * @tx_ring: ring to be cleaned
185 **/
186static void fm10k_clean_tx_ring(struct fm10k_ring *tx_ring)
187{
188 struct fm10k_tx_buffer *tx_buffer;
189 unsigned long size;
190 u16 i;
191
192 /* ring already cleared, nothing to do */
193 if (!tx_ring->tx_buffer)
194 return;
195
196 /* Free all the Tx ring sk_buffs */
197 for (i = 0; i < tx_ring->count; i++) {
198 tx_buffer = &tx_ring->tx_buffer[i];
199 fm10k_unmap_and_free_tx_resource(tx_ring, tx_buffer);
200 }
201
202 /* reset BQL values */
203 netdev_tx_reset_queue(txring_txq(tx_ring));
204
205 size = sizeof(struct fm10k_tx_buffer) * tx_ring->count;
206 memset(tx_ring->tx_buffer, 0, size);
207
208 /* Zero out the descriptor ring */
209 memset(tx_ring->desc, 0, tx_ring->size);
210}
211
212/**
213 * fm10k_free_tx_resources - Free Tx Resources per Queue
214 * @tx_ring: Tx descriptor ring for a specific queue
215 *
216 * Free all transmit software resources
217 **/
218void fm10k_free_tx_resources(struct fm10k_ring *tx_ring)
219{
220 fm10k_clean_tx_ring(tx_ring);
221
222 vfree(tx_ring->tx_buffer);
223 tx_ring->tx_buffer = NULL;
224
225 /* if not set, then don't free */
226 if (!tx_ring->desc)
227 return;
228
229 dma_free_coherent(tx_ring->dev, tx_ring->size,
230 tx_ring->desc, tx_ring->dma);
231 tx_ring->desc = NULL;
232}
233
234/**
235 * fm10k_clean_all_tx_rings - Free Tx Buffers for all queues
236 * @interface: board private structure
237 **/
238void fm10k_clean_all_tx_rings(struct fm10k_intfc *interface)
239{
240 int i;
241
242 for (i = 0; i < interface->num_tx_queues; i++)
243 fm10k_clean_tx_ring(interface->tx_ring[i]);
244}
245
246/**
247 * fm10k_free_all_tx_resources - Free Tx Resources for All Queues
248 * @interface: board private structure
249 *
250 * Free all transmit software resources
251 **/
252static void fm10k_free_all_tx_resources(struct fm10k_intfc *interface)
253{
254 int i = interface->num_tx_queues;
255
256 while (i--)
257 fm10k_free_tx_resources(interface->tx_ring[i]);
258}
259
260/**
261 * fm10k_clean_rx_ring - Free Rx Buffers per Queue
262 * @rx_ring: ring to free buffers from
263 **/
264static void fm10k_clean_rx_ring(struct fm10k_ring *rx_ring)
265{
266 unsigned long size;
267 u16 i;
268
269 if (!rx_ring->rx_buffer)
270 return;
271
272 if (rx_ring->skb)
273 dev_kfree_skb(rx_ring->skb);
274 rx_ring->skb = NULL;
275
276 /* Free all the Rx ring sk_buffs */
277 for (i = 0; i < rx_ring->count; i++) {
278 struct fm10k_rx_buffer *buffer = &rx_ring->rx_buffer[i];
279 /* clean-up will only set page pointer to NULL */
280 if (!buffer->page)
281 continue;
282
283 dma_unmap_page(rx_ring->dev, buffer->dma,
284 PAGE_SIZE, DMA_FROM_DEVICE);
285 __free_page(buffer->page);
286
287 buffer->page = NULL;
288 }
289
290 size = sizeof(struct fm10k_rx_buffer) * rx_ring->count;
291 memset(rx_ring->rx_buffer, 0, size);
292
293 /* Zero out the descriptor ring */
294 memset(rx_ring->desc, 0, rx_ring->size);
295
296 rx_ring->next_to_alloc = 0;
297 rx_ring->next_to_clean = 0;
298 rx_ring->next_to_use = 0;
299}
300
301/**
302 * fm10k_free_rx_resources - Free Rx Resources
303 * @rx_ring: ring to clean the resources from
304 *
305 * Free all receive software resources
306 **/
307void fm10k_free_rx_resources(struct fm10k_ring *rx_ring)
308{
309 fm10k_clean_rx_ring(rx_ring);
310
311 vfree(rx_ring->rx_buffer);
312 rx_ring->rx_buffer = NULL;
313
314 /* if not set, then don't free */
315 if (!rx_ring->desc)
316 return;
317
318 dma_free_coherent(rx_ring->dev, rx_ring->size,
319 rx_ring->desc, rx_ring->dma);
320
321 rx_ring->desc = NULL;
322}
323
324/**
325 * fm10k_clean_all_rx_rings - Free Rx Buffers for all queues
326 * @interface: board private structure
327 **/
328void fm10k_clean_all_rx_rings(struct fm10k_intfc *interface)
329{
330 int i;
331
332 for (i = 0; i < interface->num_rx_queues; i++)
333 fm10k_clean_rx_ring(interface->rx_ring[i]);
334}
335
336/**
337 * fm10k_free_all_rx_resources - Free Rx Resources for All Queues
338 * @interface: board private structure
339 *
340 * Free all receive software resources
341 **/
342static void fm10k_free_all_rx_resources(struct fm10k_intfc *interface)
343{
344 int i = interface->num_rx_queues;
345
346 while (i--)
347 fm10k_free_rx_resources(interface->rx_ring[i]);
348}
0e7b3644 349
504c5eac
AD
350/**
351 * fm10k_request_glort_range - Request GLORTs for use in configuring rules
352 * @interface: board private structure
353 *
eca32047 354 * This function allocates a range of glorts for this interface to use.
504c5eac
AD
355 **/
356static void fm10k_request_glort_range(struct fm10k_intfc *interface)
357{
358 struct fm10k_hw *hw = &interface->hw;
359 u16 mask = (~hw->mac.dglort_map) >> FM10K_DGLORTMAP_MASK_SHIFT;
360
361 /* establish GLORT base */
362 interface->glort = hw->mac.dglort_map & FM10K_DGLORTMAP_NONE;
363 interface->glort_count = 0;
364
365 /* nothing we can do until mask is allocated */
366 if (hw->mac.dglort_map == FM10K_DGLORTMAP_NONE)
367 return;
368
883a9ccb
AD
369 /* we support 3 possible GLORT configurations.
370 * 1: VFs consume all but the last 1
371 * 2: VFs and PF split glorts with possible gap between
372 * 3: VFs allocated first 64, all others belong to PF
373 */
374 if (mask <= hw->iov.total_vfs) {
375 interface->glort_count = 1;
376 interface->glort += mask;
377 } else if (mask < 64) {
378 interface->glort_count = (mask + 1) / 2;
379 interface->glort += interface->glort_count;
380 } else {
381 interface->glort_count = mask - 63;
382 interface->glort += 64;
383 }
504c5eac
AD
384}
385
76a540d4 386/**
f92e0e48 387 * fm10k_free_udp_port_info
76a540d4
AD
388 * @interface: board private structure
389 *
1ad78292 390 * This function frees both geneve_port and vxlan_port structures
76a540d4 391 **/
f92e0e48 392static void fm10k_free_udp_port_info(struct fm10k_intfc *interface)
76a540d4 393{
f92e0e48
JK
394 struct fm10k_udp_port *port;
395
396 /* flush all entries from vxlan list */
397 port = list_first_entry_or_null(&interface->vxlan_port,
398 struct fm10k_udp_port, list);
399 while (port) {
400 list_del(&port->list);
401 kfree(port);
402 port = list_first_entry_or_null(&interface->vxlan_port,
403 struct fm10k_udp_port,
404 list);
76a540d4 405 }
1ad78292
JK
406
407 /* flush all entries from geneve list */
408 port = list_first_entry_or_null(&interface->geneve_port,
409 struct fm10k_udp_port, list);
410 while (port) {
411 list_del(&port->list);
412 kfree(port);
413 port = list_first_entry_or_null(&interface->vxlan_port,
414 struct fm10k_udp_port,
415 list);
416 }
76a540d4
AD
417}
418
419/**
f92e0e48 420 * fm10k_restore_udp_port_info
76a540d4
AD
421 * @interface: board private structure
422 *
f92e0e48 423 * This function restores the value in the tunnel_cfg register(s) after reset
76a540d4 424 **/
f92e0e48 425static void fm10k_restore_udp_port_info(struct fm10k_intfc *interface)
76a540d4
AD
426{
427 struct fm10k_hw *hw = &interface->hw;
f92e0e48 428 struct fm10k_udp_port *port;
76a540d4
AD
429
430 /* only the PF supports configuring tunnels */
431 if (hw->mac.type != fm10k_mac_pf)
432 return;
433
f92e0e48
JK
434 port = list_first_entry_or_null(&interface->vxlan_port,
435 struct fm10k_udp_port, list);
76a540d4
AD
436
437 /* restore tunnel configuration register */
438 fm10k_write_reg(hw, FM10K_TUNNEL_CFG,
f92e0e48 439 (port ? ntohs(port->port) : 0) |
76a540d4 440 (ETH_P_TEB << FM10K_TUNNEL_CFG_NVGRE_SHIFT));
1ad78292
JK
441
442 port = list_first_entry_or_null(&interface->geneve_port,
443 struct fm10k_udp_port, list);
444
445 /* restore Geneve tunnel configuration register */
446 fm10k_write_reg(hw, FM10K_TUNNEL_CFG_GENEVE,
447 (port ? ntohs(port->port) : 0));
76a540d4
AD
448}
449
f92e0e48
JK
450static struct fm10k_udp_port *
451fm10k_remove_tunnel_port(struct list_head *ports,
452 struct udp_tunnel_info *ti)
453{
454 struct fm10k_udp_port *port;
455
456 list_for_each_entry(port, ports, list) {
457 if ((port->port == ti->port) &&
458 (port->sa_family == ti->sa_family)) {
459 list_del(&port->list);
460 return port;
461 }
462 }
463
464 return NULL;
465}
466
467static void fm10k_insert_tunnel_port(struct list_head *ports,
468 struct udp_tunnel_info *ti)
469{
470 struct fm10k_udp_port *port;
471
472 /* remove existing port entry from the list so that the newest items
473 * are always at the tail of the list.
474 */
475 port = fm10k_remove_tunnel_port(ports, ti);
476 if (!port) {
477 port = kmalloc(sizeof(*port), GFP_ATOMIC);
478 if (!port)
479 return;
480 port->port = ti->port;
481 port->sa_family = ti->sa_family;
482 }
483
484 list_add_tail(&port->list, ports);
485}
486
76a540d4 487/**
f92e0e48 488 * fm10k_udp_tunnel_add
76a540d4 489 * @netdev: network interface device structure
e5de25dc 490 * @ti: Tunnel endpoint information
76a540d4 491 *
f92e0e48 492 * This function is called when a new UDP tunnel port has been added.
1ad78292
JK
493 * Due to hardware restrictions, only one port per type can be offloaded at
494 * once.
76a540d4 495 **/
f92e0e48 496static void fm10k_udp_tunnel_add(struct net_device *dev,
f174cdbe
AD
497 struct udp_tunnel_info *ti)
498{
76a540d4 499 struct fm10k_intfc *interface = netdev_priv(dev);
76a540d4
AD
500
501 /* only the PF supports configuring tunnels */
502 if (interface->hw.mac.type != fm10k_mac_pf)
503 return;
504
f92e0e48
JK
505 switch (ti->type) {
506 case UDP_TUNNEL_TYPE_VXLAN:
507 fm10k_insert_tunnel_port(&interface->vxlan_port, ti);
508 break;
1ad78292
JK
509 case UDP_TUNNEL_TYPE_GENEVE:
510 fm10k_insert_tunnel_port(&interface->geneve_port, ti);
511 break;
f92e0e48 512 default:
76a540d4 513 return;
f92e0e48 514 }
76a540d4 515
f92e0e48 516 fm10k_restore_udp_port_info(interface);
76a540d4
AD
517}
518
519/**
f92e0e48 520 * fm10k_udp_tunnel_del
76a540d4 521 * @netdev: network interface device structure
e5de25dc 522 * @ti: Tunnel endpoint information
76a540d4 523 *
f92e0e48
JK
524 * This function is called when a new UDP tunnel port is deleted. The freed
525 * port will be removed from the list, then we reprogram the offloaded port
526 * based on the head of the list.
76a540d4 527 **/
f92e0e48 528static void fm10k_udp_tunnel_del(struct net_device *dev,
f174cdbe
AD
529 struct udp_tunnel_info *ti)
530{
76a540d4 531 struct fm10k_intfc *interface = netdev_priv(dev);
f92e0e48 532 struct fm10k_udp_port *port = NULL;
76a540d4
AD
533
534 if (interface->hw.mac.type != fm10k_mac_pf)
535 return;
536
f92e0e48
JK
537 switch (ti->type) {
538 case UDP_TUNNEL_TYPE_VXLAN:
539 port = fm10k_remove_tunnel_port(&interface->vxlan_port, ti);
540 break;
1ad78292
JK
541 case UDP_TUNNEL_TYPE_GENEVE:
542 port = fm10k_remove_tunnel_port(&interface->geneve_port, ti);
543 break;
f92e0e48
JK
544 default:
545 return;
76a540d4
AD
546 }
547
f92e0e48
JK
548 /* if we did remove a port we need to free its memory */
549 kfree(port);
550
551 fm10k_restore_udp_port_info(interface);
76a540d4
AD
552}
553
504c5eac
AD
554/**
555 * fm10k_open - Called when a network interface is made active
556 * @netdev: network interface device structure
557 *
558 * Returns 0 on success, negative value on failure
559 *
560 * The open entry point is called when a network interface is made
561 * active by the system (IFF_UP). At this point all resources needed
562 * for transmit and receive operations are allocated, the interrupt
563 * handler is registered with the OS, the watchdog timer is started,
564 * and the stack is notified that the interface is ready.
565 **/
566int fm10k_open(struct net_device *netdev)
567{
568 struct fm10k_intfc *interface = netdev_priv(netdev);
18283cad
AD
569 int err;
570
3abaae42
AD
571 /* allocate transmit descriptors */
572 err = fm10k_setup_all_tx_resources(interface);
573 if (err)
574 goto err_setup_tx;
575
576 /* allocate receive descriptors */
577 err = fm10k_setup_all_rx_resources(interface);
578 if (err)
579 goto err_setup_rx;
580
18283cad
AD
581 /* allocate interrupt resources */
582 err = fm10k_qv_request_irq(interface);
583 if (err)
584 goto err_req_irq;
504c5eac
AD
585
586 /* setup GLORT assignment for this port */
587 fm10k_request_glort_range(interface);
588
e27ef599 589 /* Notify the stack of the actual queue counts */
c9d49940
AD
590 err = netif_set_real_num_tx_queues(netdev,
591 interface->num_tx_queues);
592 if (err)
593 goto err_set_queues;
e27ef599
AD
594
595 err = netif_set_real_num_rx_queues(netdev,
596 interface->num_rx_queues);
597 if (err)
598 goto err_set_queues;
599
f174cdbe 600 udp_tunnel_get_rx_info(netdev);
0d722ec8 601
504c5eac
AD
602 fm10k_up(interface);
603
604 return 0;
18283cad 605
e27ef599
AD
606err_set_queues:
607 fm10k_qv_free_irq(interface);
18283cad 608err_req_irq:
3abaae42
AD
609 fm10k_free_all_rx_resources(interface);
610err_setup_rx:
611 fm10k_free_all_tx_resources(interface);
612err_setup_tx:
18283cad 613 return err;
504c5eac
AD
614}
615
616/**
617 * fm10k_close - Disables a network interface
618 * @netdev: network interface device structure
619 *
620 * Returns 0, this is not allowed to fail
621 *
622 * The close entry point is called when an interface is de-activated
623 * by the OS. The hardware is still under the drivers control, but
624 * needs to be disabled. A global MAC reset is issued to stop the
625 * hardware, and all transmit and receive resources are freed.
626 **/
627int fm10k_close(struct net_device *netdev)
628{
629 struct fm10k_intfc *interface = netdev_priv(netdev);
630
631 fm10k_down(interface);
632
18283cad
AD
633 fm10k_qv_free_irq(interface);
634
f92e0e48 635 fm10k_free_udp_port_info(interface);
76a540d4 636
3abaae42
AD
637 fm10k_free_all_tx_resources(interface);
638 fm10k_free_all_rx_resources(interface);
639
504c5eac
AD
640 return 0;
641}
642
0e7b3644
AD
643static netdev_tx_t fm10k_xmit_frame(struct sk_buff *skb, struct net_device *dev)
644{
b101c962 645 struct fm10k_intfc *interface = netdev_priv(dev);
c9d49940 646 unsigned int r_idx = skb->queue_mapping;
b101c962
AD
647 int err;
648
a4fcad65 649 if ((skb->protocol == htons(ETH_P_8021Q)) &&
df8a39de 650 !skb_vlan_tag_present(skb)) {
b101c962
AD
651 /* FM10K only supports hardware tagging, any tags in frame
652 * are considered 2nd level or "outer" tags
653 */
654 struct vlan_hdr *vhdr;
655 __be16 proto;
656
657 /* make sure skb is not shared */
658 skb = skb_share_check(skb, GFP_ATOMIC);
659 if (!skb)
660 return NETDEV_TX_OK;
661
662 /* make sure there is enough room to move the ethernet header */
663 if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN)))
664 return NETDEV_TX_OK;
665
666 /* verify the skb head is not shared */
667 err = skb_cow_head(skb, 0);
6f97532e 668 if (err) {
669 dev_kfree_skb(skb);
b101c962 670 return NETDEV_TX_OK;
6f97532e 671 }
b101c962 672
aa502b4a 673 /* locate VLAN header */
b101c962
AD
674 vhdr = (struct vlan_hdr *)(skb->data + ETH_HLEN);
675
676 /* pull the 2 key pieces of data out of it */
677 __vlan_hwaccel_put_tag(skb,
678 htons(ETH_P_8021Q),
679 ntohs(vhdr->h_vlan_TCI));
680 proto = vhdr->h_vlan_encapsulated_proto;
681 skb->protocol = (ntohs(proto) >= 1536) ? proto :
682 htons(ETH_P_802_2);
683
684 /* squash it by moving the ethernet addresses up 4 bytes */
685 memmove(skb->data + VLAN_HLEN, skb->data, 12);
686 __skb_pull(skb, VLAN_HLEN);
687 skb_reset_mac_header(skb);
688 }
689
690 /* The minimum packet size for a single buffer is 17B so pad the skb
691 * in order to meet this minimum size requirement.
692 */
693 if (unlikely(skb->len < 17)) {
694 int pad_len = 17 - skb->len;
695
696 if (skb_pad(skb, pad_len))
697 return NETDEV_TX_OK;
698 __skb_put(skb, pad_len);
699 }
700
701 if (r_idx >= interface->num_tx_queues)
702 r_idx %= interface->num_tx_queues;
703
704 err = fm10k_xmit_frame_ring(skb, interface->tx_ring[r_idx]);
705
706 return err;
0e7b3644
AD
707}
708
709static int fm10k_change_mtu(struct net_device *dev, int new_mtu)
710{
711 if (new_mtu < 68 || new_mtu > FM10K_MAX_JUMBO_FRAME_SIZE)
712 return -EINVAL;
713
714 dev->mtu = new_mtu;
715
716 return 0;
717}
718
b101c962
AD
719/**
720 * fm10k_tx_timeout - Respond to a Tx Hang
721 * @netdev: network interface device structure
722 **/
723static void fm10k_tx_timeout(struct net_device *netdev)
724{
725 struct fm10k_intfc *interface = netdev_priv(netdev);
726 bool real_tx_hang = false;
727 int i;
728
729#define TX_TIMEO_LIMIT 16000
730 for (i = 0; i < interface->num_tx_queues; i++) {
731 struct fm10k_ring *tx_ring = interface->tx_ring[i];
732
733 if (check_for_tx_hang(tx_ring) && fm10k_check_tx_hang(tx_ring))
734 real_tx_hang = true;
735 }
736
737 if (real_tx_hang) {
738 fm10k_tx_timeout_reset(interface);
739 } else {
740 netif_info(interface, drv, netdev,
741 "Fake Tx hang detected with timeout of %d seconds\n",
a4fcad65 742 netdev->watchdog_timeo / HZ);
b101c962
AD
743
744 /* fake Tx hang - increase the kernel timeout */
745 if (netdev->watchdog_timeo < TX_TIMEO_LIMIT)
746 netdev->watchdog_timeo *= 2;
747 }
748}
749
8f5e20d4
AD
750static int fm10k_uc_vlan_unsync(struct net_device *netdev,
751 const unsigned char *uc_addr)
752{
753 struct fm10k_intfc *interface = netdev_priv(netdev);
754 struct fm10k_hw *hw = &interface->hw;
755 u16 glort = interface->glort;
756 u16 vid = interface->vid;
757 bool set = !!(vid / VLAN_N_VID);
758 int err;
759
760 /* drop any leading bits on the VLAN ID */
761 vid &= VLAN_N_VID - 1;
762
763 err = hw->mac.ops.update_uc_addr(hw, glort, uc_addr, vid, set, 0);
764 if (err)
765 return err;
766
767 /* return non-zero value as we are only doing a partial sync/unsync */
768 return 1;
769}
770
771static int fm10k_mc_vlan_unsync(struct net_device *netdev,
772 const unsigned char *mc_addr)
773{
774 struct fm10k_intfc *interface = netdev_priv(netdev);
775 struct fm10k_hw *hw = &interface->hw;
776 u16 glort = interface->glort;
777 u16 vid = interface->vid;
778 bool set = !!(vid / VLAN_N_VID);
779 int err;
780
781 /* drop any leading bits on the VLAN ID */
782 vid &= VLAN_N_VID - 1;
783
784 err = hw->mac.ops.update_mc_addr(hw, glort, mc_addr, vid, set);
785 if (err)
786 return err;
787
788 /* return non-zero value as we are only doing a partial sync/unsync */
789 return 1;
790}
791
792static int fm10k_update_vid(struct net_device *netdev, u16 vid, bool set)
793{
794 struct fm10k_intfc *interface = netdev_priv(netdev);
795 struct fm10k_hw *hw = &interface->hw;
796 s32 err;
e71c9318 797 int i;
8f5e20d4
AD
798
799 /* updates do not apply to VLAN 0 */
800 if (!vid)
801 return 0;
802
803 if (vid >= VLAN_N_VID)
804 return -EINVAL;
805
806 /* Verify we have permission to add VLANs */
807 if (hw->mac.vlan_override)
808 return -EACCES;
809
8f5e20d4
AD
810 /* update active_vlans bitmask */
811 set_bit(vid, interface->active_vlans);
812 if (!set)
813 clear_bit(vid, interface->active_vlans);
814
aa502b4a 815 /* disable the default VLAN ID on ring if we have an active VLAN */
e71c9318
JK
816 for (i = 0; i < interface->num_rx_queues; i++) {
817 struct fm10k_ring *rx_ring = interface->rx_ring[i];
818 u16 rx_vid = rx_ring->vid & (VLAN_N_VID - 1);
819
820 if (test_bit(rx_vid, interface->active_vlans))
821 rx_ring->vid |= FM10K_VLAN_CLEAR;
822 else
823 rx_ring->vid &= ~FM10K_VLAN_CLEAR;
824 }
825
3d02b3df
BA
826 /* Do not remove default VLAN ID related entries from VLAN and MAC
827 * tables
828 */
56f0569e 829 if (!set && vid == hw->mac.default_vid)
661b2067
JK
830 return 0;
831
3f0bdb2e
JK
832 /* Do not throw an error if the interface is down. We will sync once
833 * we come up
834 */
835 if (test_bit(__FM10K_DOWN, &interface->state))
836 return 0;
837
8f5e20d4
AD
838 fm10k_mbx_lock(interface);
839
eca32047 840 /* only need to update the VLAN if not in promiscuous mode */
8f5e20d4
AD
841 if (!(netdev->flags & IFF_PROMISC)) {
842 err = hw->mac.ops.update_vlan(hw, vid, 0, set);
843 if (err)
13cb2dad 844 goto err_out;
8f5e20d4
AD
845 }
846
847 /* update our base MAC address */
848 err = hw->mac.ops.update_uc_addr(hw, interface->glort, hw->mac.addr,
849 vid, set, 0);
850 if (err)
13cb2dad 851 goto err_out;
8f5e20d4 852
aa502b4a 853 /* set VLAN ID prior to syncing/unsyncing the VLAN */
8f5e20d4
AD
854 interface->vid = vid + (set ? VLAN_N_VID : 0);
855
856 /* Update the unicast and multicast address list to add/drop VLAN */
857 __dev_uc_unsync(netdev, fm10k_uc_vlan_unsync);
858 __dev_mc_unsync(netdev, fm10k_mc_vlan_unsync);
859
13cb2dad 860err_out:
8f5e20d4
AD
861 fm10k_mbx_unlock(interface);
862
13cb2dad 863 return err;
8f5e20d4
AD
864}
865
866static int fm10k_vlan_rx_add_vid(struct net_device *netdev,
867 __always_unused __be16 proto, u16 vid)
868{
869 /* update VLAN and address table based on changes */
870 return fm10k_update_vid(netdev, vid, true);
871}
872
873static int fm10k_vlan_rx_kill_vid(struct net_device *netdev,
874 __always_unused __be16 proto, u16 vid)
875{
876 /* update VLAN and address table based on changes */
877 return fm10k_update_vid(netdev, vid, false);
878}
879
880static u16 fm10k_find_next_vlan(struct fm10k_intfc *interface, u16 vid)
881{
882 struct fm10k_hw *hw = &interface->hw;
883 u16 default_vid = hw->mac.default_vid;
884 u16 vid_limit = vid < default_vid ? default_vid : VLAN_N_VID;
885
886 vid = find_next_bit(interface->active_vlans, vid_limit, ++vid);
887
888 return vid;
889}
890
891static void fm10k_clear_unused_vlans(struct fm10k_intfc *interface)
892{
893 struct fm10k_hw *hw = &interface->hw;
894 u32 vid, prev_vid;
895
896 /* loop through and find any gaps in the table */
897 for (vid = 0, prev_vid = 0;
898 prev_vid < VLAN_N_VID;
899 prev_vid = vid + 1, vid = fm10k_find_next_vlan(interface, vid)) {
900 if (prev_vid == vid)
901 continue;
902
903 /* send request to clear multiple bits at a time */
904 prev_vid += (vid - prev_vid - 1) << FM10K_VLAN_LENGTH_SHIFT;
905 hw->mac.ops.update_vlan(hw, prev_vid, 0, false);
906 }
907}
908
909static int __fm10k_uc_sync(struct net_device *dev,
910 const unsigned char *addr, bool sync)
911{
912 struct fm10k_intfc *interface = netdev_priv(dev);
913 struct fm10k_hw *hw = &interface->hw;
914 u16 vid, glort = interface->glort;
915 s32 err;
916
917 if (!is_valid_ether_addr(addr))
918 return -EADDRNOTAVAIL;
919
920 /* update table with current entries */
8998763a 921 for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 1;
8f5e20d4
AD
922 vid < VLAN_N_VID;
923 vid = fm10k_find_next_vlan(interface, vid)) {
924 err = hw->mac.ops.update_uc_addr(hw, glort, addr,
925 vid, sync, 0);
926 if (err)
927 return err;
928 }
929
930 return 0;
931}
932
933static int fm10k_uc_sync(struct net_device *dev,
934 const unsigned char *addr)
935{
936 return __fm10k_uc_sync(dev, addr, true);
937}
938
939static int fm10k_uc_unsync(struct net_device *dev,
940 const unsigned char *addr)
941{
942 return __fm10k_uc_sync(dev, addr, false);
943}
944
0e7b3644
AD
945static int fm10k_set_mac(struct net_device *dev, void *p)
946{
8f5e20d4
AD
947 struct fm10k_intfc *interface = netdev_priv(dev);
948 struct fm10k_hw *hw = &interface->hw;
0e7b3644
AD
949 struct sockaddr *addr = p;
950 s32 err = 0;
951
952 if (!is_valid_ether_addr(addr->sa_data))
953 return -EADDRNOTAVAIL;
954
8f5e20d4
AD
955 if (dev->flags & IFF_UP) {
956 /* setting MAC address requires mailbox */
957 fm10k_mbx_lock(interface);
958
959 err = fm10k_uc_sync(dev, addr->sa_data);
960 if (!err)
961 fm10k_uc_unsync(dev, hw->mac.addr);
962
963 fm10k_mbx_unlock(interface);
964 }
965
0e7b3644
AD
966 if (!err) {
967 ether_addr_copy(dev->dev_addr, addr->sa_data);
8f5e20d4 968 ether_addr_copy(hw->mac.addr, addr->sa_data);
0e7b3644
AD
969 dev->addr_assign_type &= ~NET_ADDR_RANDOM;
970 }
971
8f5e20d4
AD
972 /* if we had a mailbox error suggest trying again */
973 return err ? -EAGAIN : 0;
974}
975
976static int __fm10k_mc_sync(struct net_device *dev,
977 const unsigned char *addr, bool sync)
978{
979 struct fm10k_intfc *interface = netdev_priv(dev);
980 struct fm10k_hw *hw = &interface->hw;
981 u16 vid, glort = interface->glort;
8f5e20d4
AD
982
983 /* update table with current entries */
8998763a 984 for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 1;
8f5e20d4
AD
985 vid < VLAN_N_VID;
986 vid = fm10k_find_next_vlan(interface, vid)) {
745136a8 987 hw->mac.ops.update_mc_addr(hw, glort, addr, vid, sync);
8f5e20d4
AD
988 }
989
990 return 0;
991}
992
993static int fm10k_mc_sync(struct net_device *dev,
994 const unsigned char *addr)
995{
996 return __fm10k_mc_sync(dev, addr, true);
997}
998
999static int fm10k_mc_unsync(struct net_device *dev,
1000 const unsigned char *addr)
1001{
1002 return __fm10k_mc_sync(dev, addr, false);
0e7b3644
AD
1003}
1004
1005static void fm10k_set_rx_mode(struct net_device *dev)
1006{
8f5e20d4
AD
1007 struct fm10k_intfc *interface = netdev_priv(dev);
1008 struct fm10k_hw *hw = &interface->hw;
1009 int xcast_mode;
1010
1011 /* no need to update the harwdare if we are not running */
1012 if (!(dev->flags & IFF_UP))
1013 return;
1014
1015 /* determine new mode based on flags */
1016 xcast_mode = (dev->flags & IFF_PROMISC) ? FM10K_XCAST_MODE_PROMISC :
1017 (dev->flags & IFF_ALLMULTI) ? FM10K_XCAST_MODE_ALLMULTI :
1018 (dev->flags & (IFF_BROADCAST | IFF_MULTICAST)) ?
1019 FM10K_XCAST_MODE_MULTI : FM10K_XCAST_MODE_NONE;
1020
1021 fm10k_mbx_lock(interface);
1022
a7731cc8 1023 /* update xcast mode first, but only if it changed */
8f5e20d4
AD
1024 if (interface->xcast_mode != xcast_mode) {
1025 /* update VLAN table */
1026 if (xcast_mode == FM10K_XCAST_MODE_PROMISC)
1027 hw->mac.ops.update_vlan(hw, FM10K_VLAN_ALL, 0, true);
1028 if (interface->xcast_mode == FM10K_XCAST_MODE_PROMISC)
1029 fm10k_clear_unused_vlans(interface);
1030
1031 /* update xcast mode */
1032 hw->mac.ops.update_xcast_mode(hw, interface->glort, xcast_mode);
1033
1034 /* record updated xcast mode state */
1035 interface->xcast_mode = xcast_mode;
1036 }
1037
a7731cc8 1038 /* synchronize all of the addresses */
8998763a
NMK
1039 __dev_uc_sync(dev, fm10k_uc_sync, fm10k_uc_unsync);
1040 __dev_mc_sync(dev, fm10k_mc_sync, fm10k_mc_unsync);
a7731cc8 1041
8f5e20d4
AD
1042 fm10k_mbx_unlock(interface);
1043}
1044
1045void fm10k_restore_rx_state(struct fm10k_intfc *interface)
1046{
1047 struct net_device *netdev = interface->netdev;
1048 struct fm10k_hw *hw = &interface->hw;
1049 int xcast_mode;
1050 u16 vid, glort;
1051
1052 /* record glort for this interface */
1053 glort = interface->glort;
1054
1055 /* convert interface flags to xcast mode */
1056 if (netdev->flags & IFF_PROMISC)
1057 xcast_mode = FM10K_XCAST_MODE_PROMISC;
1058 else if (netdev->flags & IFF_ALLMULTI)
1059 xcast_mode = FM10K_XCAST_MODE_ALLMULTI;
1060 else if (netdev->flags & (IFF_BROADCAST | IFF_MULTICAST))
1061 xcast_mode = FM10K_XCAST_MODE_MULTI;
1062 else
1063 xcast_mode = FM10K_XCAST_MODE_NONE;
1064
1065 fm10k_mbx_lock(interface);
1066
1067 /* Enable logical port */
1068 hw->mac.ops.update_lport_state(hw, glort, interface->glort_count, true);
1069
1070 /* update VLAN table */
1071 hw->mac.ops.update_vlan(hw, FM10K_VLAN_ALL, 0,
1072 xcast_mode == FM10K_XCAST_MODE_PROMISC);
1073
1074 /* Add filter for VLAN 0 */
1075 hw->mac.ops.update_vlan(hw, 0, 0, true);
1076
1077 /* update table with current entries */
8998763a 1078 for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 1;
8f5e20d4
AD
1079 vid < VLAN_N_VID;
1080 vid = fm10k_find_next_vlan(interface, vid)) {
1081 hw->mac.ops.update_vlan(hw, vid, 0, true);
1082 hw->mac.ops.update_uc_addr(hw, glort, hw->mac.addr,
1083 vid, true, 0);
1084 }
1085
5c2d642f 1086 /* update xcast mode before synchronizing addresses */
a7731cc8
JK
1087 hw->mac.ops.update_xcast_mode(hw, glort, xcast_mode);
1088
eca32047 1089 /* synchronize all of the addresses */
8998763a
NMK
1090 __dev_uc_sync(netdev, fm10k_uc_sync, fm10k_uc_unsync);
1091 __dev_mc_sync(netdev, fm10k_mc_sync, fm10k_mc_unsync);
8f5e20d4 1092
8f5e20d4
AD
1093 fm10k_mbx_unlock(interface);
1094
1095 /* record updated xcast mode state */
1096 interface->xcast_mode = xcast_mode;
76a540d4
AD
1097
1098 /* Restore tunnel configuration */
f92e0e48 1099 fm10k_restore_udp_port_info(interface);
8f5e20d4
AD
1100}
1101
1102void fm10k_reset_rx_state(struct fm10k_intfc *interface)
1103{
1104 struct net_device *netdev = interface->netdev;
1105 struct fm10k_hw *hw = &interface->hw;
1106
1107 fm10k_mbx_lock(interface);
1108
1109 /* clear the logical port state on lower device */
1110 hw->mac.ops.update_lport_state(hw, interface->glort,
1111 interface->glort_count, false);
1112
1113 fm10k_mbx_unlock(interface);
1114
1115 /* reset flags to default state */
1116 interface->xcast_mode = FM10K_XCAST_MODE_NONE;
1117
1118 /* clear the sync flag since the lport has been dropped */
1119 __dev_uc_unsync(netdev, NULL);
1120 __dev_mc_unsync(netdev, NULL);
0e7b3644
AD
1121}
1122
e27ef599
AD
1123/**
1124 * fm10k_get_stats64 - Get System Network Statistics
1125 * @netdev: network interface device structure
1126 * @stats: storage space for 64bit statistics
1127 *
1128 * Returns 64bit statistics, for use in the ndo_get_stats64 callback. This
1129 * function replaces fm10k_get_stats for kernels which support it.
1130 */
1131static struct rtnl_link_stats64 *fm10k_get_stats64(struct net_device *netdev,
1132 struct rtnl_link_stats64 *stats)
1133{
1134 struct fm10k_intfc *interface = netdev_priv(netdev);
1135 struct fm10k_ring *ring;
1136 unsigned int start, i;
1137 u64 bytes, packets;
1138
1139 rcu_read_lock();
1140
1141 for (i = 0; i < interface->num_rx_queues; i++) {
ce4dad2c 1142 ring = READ_ONCE(interface->rx_ring[i]);
e27ef599
AD
1143
1144 if (!ring)
1145 continue;
1146
1147 do {
1148 start = u64_stats_fetch_begin_irq(&ring->syncp);
1149 packets = ring->stats.packets;
1150 bytes = ring->stats.bytes;
1151 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
1152
1153 stats->rx_packets += packets;
1154 stats->rx_bytes += bytes;
1155 }
1156
1157 for (i = 0; i < interface->num_tx_queues; i++) {
ce4dad2c 1158 ring = READ_ONCE(interface->tx_ring[i]);
e27ef599
AD
1159
1160 if (!ring)
1161 continue;
1162
1163 do {
1164 start = u64_stats_fetch_begin_irq(&ring->syncp);
1165 packets = ring->stats.packets;
1166 bytes = ring->stats.bytes;
1167 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
1168
1169 stats->tx_packets += packets;
1170 stats->tx_bytes += bytes;
1171 }
1172
1173 rcu_read_unlock();
1174
1175 /* following stats updated by fm10k_service_task() */
1176 stats->rx_missed_errors = netdev->stats.rx_missed_errors;
1177
1178 return stats;
1179}
1180
aa3ac822
AD
1181int fm10k_setup_tc(struct net_device *dev, u8 tc)
1182{
1183 struct fm10k_intfc *interface = netdev_priv(dev);
09f8a82b 1184 int err;
aa3ac822
AD
1185
1186 /* Currently only the PF supports priority classes */
1187 if (tc && (interface->hw.mac.type != fm10k_mac_pf))
1188 return -EINVAL;
1189
1190 /* Hardware supports up to 8 traffic classes */
1191 if (tc > 8)
1192 return -EINVAL;
1193
1194 /* Hardware has to reinitialize queues to match packet
1195 * buffer alignment. Unfortunately, the hardware is not
1196 * flexible enough to do this dynamically.
1197 */
1198 if (netif_running(dev))
1199 fm10k_close(dev);
1200
1201 fm10k_mbx_free_irq(interface);
1202
1203 fm10k_clear_queueing_scheme(interface);
1204
1205 /* we expect the prio_tc map to be repopulated later */
1206 netdev_reset_tc(dev);
1207 netdev_set_num_tc(dev, tc);
1208
09f8a82b
AD
1209 err = fm10k_init_queueing_scheme(interface);
1210 if (err)
1211 goto err_queueing_scheme;
aa3ac822 1212
09f8a82b
AD
1213 err = fm10k_mbx_request_irq(interface);
1214 if (err)
1215 goto err_mbx_irq;
aa3ac822 1216
09f8a82b
AD
1217 err = netif_running(dev) ? fm10k_open(dev) : 0;
1218 if (err)
1219 goto err_open;
aa3ac822
AD
1220
1221 /* flag to indicate SWPRI has yet to be updated */
1222 interface->flags |= FM10K_FLAG_SWPRI_CONFIG;
1223
1224 return 0;
09f8a82b
AD
1225err_open:
1226 fm10k_mbx_free_irq(interface);
1227err_mbx_irq:
1228 fm10k_clear_queueing_scheme(interface);
1229err_queueing_scheme:
1230 netif_device_detach(dev);
1231
1232 return err;
aa3ac822
AD
1233}
1234
16e5cc64
JF
1235static int __fm10k_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
1236 struct tc_to_netdev *tc)
e4c6734e 1237{
5eb4dce3 1238 if (tc->type != TC_SETUP_MQPRIO)
e4c6734e
JF
1239 return -EINVAL;
1240
16e5cc64 1241 return fm10k_setup_tc(dev, tc->tc);
e4c6734e
JF
1242}
1243
5cd5e2e9
AD
1244static void fm10k_assign_l2_accel(struct fm10k_intfc *interface,
1245 struct fm10k_l2_accel *l2_accel)
1246{
1247 struct fm10k_ring *ring;
1248 int i;
1249
1250 for (i = 0; i < interface->num_rx_queues; i++) {
1251 ring = interface->rx_ring[i];
1252 rcu_assign_pointer(ring->l2_accel, l2_accel);
1253 }
1254
1255 interface->l2_accel = l2_accel;
1256}
1257
1258static void *fm10k_dfwd_add_station(struct net_device *dev,
1259 struct net_device *sdev)
1260{
1261 struct fm10k_intfc *interface = netdev_priv(dev);
1262 struct fm10k_l2_accel *l2_accel = interface->l2_accel;
1263 struct fm10k_l2_accel *old_l2_accel = NULL;
1264 struct fm10k_dglort_cfg dglort = { 0 };
1265 struct fm10k_hw *hw = &interface->hw;
1266 int size = 0, i;
1267 u16 glort;
1268
1269 /* allocate l2 accel structure if it is not available */
1270 if (!l2_accel) {
1271 /* verify there is enough free GLORTs to support l2_accel */
1272 if (interface->glort_count < 7)
1273 return ERR_PTR(-EBUSY);
1274
1275 size = offsetof(struct fm10k_l2_accel, macvlan[7]);
1276 l2_accel = kzalloc(size, GFP_KERNEL);
1277 if (!l2_accel)
1278 return ERR_PTR(-ENOMEM);
1279
1280 l2_accel->size = 7;
1281 l2_accel->dglort = interface->glort;
1282
1283 /* update pointers */
1284 fm10k_assign_l2_accel(interface, l2_accel);
1285 /* do not expand if we are at our limit */
1286 } else if ((l2_accel->count == FM10K_MAX_STATIONS) ||
1287 (l2_accel->count == (interface->glort_count - 1))) {
1288 return ERR_PTR(-EBUSY);
1289 /* expand if we have hit the size limit */
1290 } else if (l2_accel->count == l2_accel->size) {
1291 old_l2_accel = l2_accel;
1292 size = offsetof(struct fm10k_l2_accel,
1293 macvlan[(l2_accel->size * 2) + 1]);
1294 l2_accel = kzalloc(size, GFP_KERNEL);
1295 if (!l2_accel)
1296 return ERR_PTR(-ENOMEM);
1297
1298 memcpy(l2_accel, old_l2_accel,
1299 offsetof(struct fm10k_l2_accel,
1300 macvlan[old_l2_accel->size]));
1301
1302 l2_accel->size = (old_l2_accel->size * 2) + 1;
1303
1304 /* update pointers */
1305 fm10k_assign_l2_accel(interface, l2_accel);
1306 kfree_rcu(old_l2_accel, rcu);
1307 }
1308
1309 /* add macvlan to accel table, and record GLORT for position */
1310 for (i = 0; i < l2_accel->size; i++) {
1311 if (!l2_accel->macvlan[i])
1312 break;
1313 }
1314
1315 /* record station */
1316 l2_accel->macvlan[i] = sdev;
1317 l2_accel->count++;
1318
1319 /* configure default DGLORT mapping for RSS/DCB */
1320 dglort.idx = fm10k_dglort_pf_rss;
1321 dglort.inner_rss = 1;
1322 dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask);
1323 dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask);
1324 dglort.glort = interface->glort;
1325 dglort.shared_l = fls(l2_accel->size);
1326 hw->mac.ops.configure_dglort_map(hw, &dglort);
1327
1328 /* Add rules for this specific dglort to the switch */
1329 fm10k_mbx_lock(interface);
1330
1331 glort = l2_accel->dglort + 1 + i;
1332 hw->mac.ops.update_xcast_mode(hw, glort, FM10K_XCAST_MODE_MULTI);
1333 hw->mac.ops.update_uc_addr(hw, glort, sdev->dev_addr, 0, true, 0);
1334
1335 fm10k_mbx_unlock(interface);
1336
1337 return sdev;
1338}
1339
1340static void fm10k_dfwd_del_station(struct net_device *dev, void *priv)
1341{
1342 struct fm10k_intfc *interface = netdev_priv(dev);
ce4dad2c 1343 struct fm10k_l2_accel *l2_accel = READ_ONCE(interface->l2_accel);
5cd5e2e9
AD
1344 struct fm10k_dglort_cfg dglort = { 0 };
1345 struct fm10k_hw *hw = &interface->hw;
1346 struct net_device *sdev = priv;
1347 int i;
1348 u16 glort;
1349
1350 if (!l2_accel)
1351 return;
1352
1353 /* search table for matching interface */
1354 for (i = 0; i < l2_accel->size; i++) {
1355 if (l2_accel->macvlan[i] == sdev)
1356 break;
1357 }
1358
1359 /* exit if macvlan not found */
1360 if (i == l2_accel->size)
1361 return;
1362
1363 /* Remove any rules specific to this dglort */
1364 fm10k_mbx_lock(interface);
1365
1366 glort = l2_accel->dglort + 1 + i;
1367 hw->mac.ops.update_xcast_mode(hw, glort, FM10K_XCAST_MODE_NONE);
1368 hw->mac.ops.update_uc_addr(hw, glort, sdev->dev_addr, 0, false, 0);
1369
1370 fm10k_mbx_unlock(interface);
1371
1372 /* record removal */
1373 l2_accel->macvlan[i] = NULL;
1374 l2_accel->count--;
1375
1376 /* configure default DGLORT mapping for RSS/DCB */
1377 dglort.idx = fm10k_dglort_pf_rss;
1378 dglort.inner_rss = 1;
1379 dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask);
1380 dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask);
1381 dglort.glort = interface->glort;
f1f3322e 1382 dglort.shared_l = fls(l2_accel->size);
5cd5e2e9
AD
1383 hw->mac.ops.configure_dglort_map(hw, &dglort);
1384
1385 /* If table is empty remove it */
1386 if (l2_accel->count == 0) {
1387 fm10k_assign_l2_accel(interface, NULL);
1388 kfree_rcu(l2_accel, rcu);
1389 }
1390}
1391
5bf33dc6
MV
1392static netdev_features_t fm10k_features_check(struct sk_buff *skb,
1393 struct net_device *dev,
1394 netdev_features_t features)
1395{
1396 if (!skb->encapsulation || fm10k_tx_encap_offload(skb))
1397 return features;
1398
a188222b 1399 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
5bf33dc6
MV
1400}
1401
0e7b3644 1402static const struct net_device_ops fm10k_netdev_ops = {
504c5eac
AD
1403 .ndo_open = fm10k_open,
1404 .ndo_stop = fm10k_close,
0e7b3644
AD
1405 .ndo_validate_addr = eth_validate_addr,
1406 .ndo_start_xmit = fm10k_xmit_frame,
1407 .ndo_set_mac_address = fm10k_set_mac,
1408 .ndo_change_mtu = fm10k_change_mtu,
b101c962 1409 .ndo_tx_timeout = fm10k_tx_timeout,
8f5e20d4
AD
1410 .ndo_vlan_rx_add_vid = fm10k_vlan_rx_add_vid,
1411 .ndo_vlan_rx_kill_vid = fm10k_vlan_rx_kill_vid,
0e7b3644 1412 .ndo_set_rx_mode = fm10k_set_rx_mode,
e27ef599 1413 .ndo_get_stats64 = fm10k_get_stats64,
e4c6734e 1414 .ndo_setup_tc = __fm10k_setup_tc,
883a9ccb
AD
1415 .ndo_set_vf_mac = fm10k_ndo_set_vf_mac,
1416 .ndo_set_vf_vlan = fm10k_ndo_set_vf_vlan,
1417 .ndo_set_vf_rate = fm10k_ndo_set_vf_bw,
1418 .ndo_get_vf_config = fm10k_ndo_get_vf_config,
f92e0e48
JK
1419 .ndo_udp_tunnel_add = fm10k_udp_tunnel_add,
1420 .ndo_udp_tunnel_del = fm10k_udp_tunnel_del,
5cd5e2e9
AD
1421 .ndo_dfwd_add_station = fm10k_dfwd_add_station,
1422 .ndo_dfwd_del_station = fm10k_dfwd_del_station,
8b4a98c7
JK
1423#ifdef CONFIG_NET_POLL_CONTROLLER
1424 .ndo_poll_controller = fm10k_netpoll,
1425#endif
5bf33dc6 1426 .ndo_features_check = fm10k_features_check,
0e7b3644
AD
1427};
1428
1429#define DEFAULT_DEBUG_LEVEL_SHIFT 3
1430
e0244903 1431struct net_device *fm10k_alloc_netdev(const struct fm10k_info *info)
0e7b3644 1432{
e0244903 1433 netdev_features_t hw_features;
0e7b3644
AD
1434 struct fm10k_intfc *interface;
1435 struct net_device *dev;
1436
e27ef599 1437 dev = alloc_etherdev_mq(sizeof(struct fm10k_intfc), MAX_QUEUES);
0e7b3644
AD
1438 if (!dev)
1439 return NULL;
1440
1441 /* set net device and ethtool ops */
1442 dev->netdev_ops = &fm10k_netdev_ops;
82dd0f7e 1443 fm10k_set_ethtool_ops(dev);
0e7b3644
AD
1444
1445 /* configure default debug level */
1446 interface = netdev_priv(dev);
fcdb0a99 1447 interface->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
0e7b3644
AD
1448
1449 /* configure default features */
76a540d4
AD
1450 dev->features |= NETIF_F_IP_CSUM |
1451 NETIF_F_IPV6_CSUM |
1452 NETIF_F_SG |
1453 NETIF_F_TSO |
1454 NETIF_F_TSO6 |
1455 NETIF_F_TSO_ECN |
76a540d4
AD
1456 NETIF_F_RXHASH |
1457 NETIF_F_RXCSUM;
0e7b3644 1458
e0244903
JK
1459 /* Only the PF can support VXLAN and NVGRE tunnel offloads */
1460 if (info->mac == fm10k_mac_pf) {
1461 dev->hw_enc_features = NETIF_F_IP_CSUM |
1462 NETIF_F_TSO |
1463 NETIF_F_TSO6 |
1464 NETIF_F_TSO_ECN |
1465 NETIF_F_GSO_UDP_TUNNEL |
1466 NETIF_F_IPV6_CSUM |
1467 NETIF_F_SG;
1468
1469 dev->features |= NETIF_F_GSO_UDP_TUNNEL;
1470 }
1471
0e7b3644 1472 /* all features defined to this point should be changeable */
e0244903 1473 hw_features = dev->features;
0e7b3644 1474
5cd5e2e9 1475 /* allow user to enable L2 forwarding acceleration */
e0244903 1476 hw_features |= NETIF_F_HW_L2FW_DOFFLOAD;
5cd5e2e9 1477
0e7b3644
AD
1478 /* configure VLAN features */
1479 dev->vlan_features |= dev->features;
1480
8f5e20d4
AD
1481 /* we want to leave these both on as we cannot disable VLAN tag
1482 * insertion or stripping on the hardware since it is contained
1483 * in the FTAG and not in the frame itself.
1484 */
1485 dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
1486 NETIF_F_HW_VLAN_CTAG_RX |
1487 NETIF_F_HW_VLAN_CTAG_FILTER;
1488
1489 dev->priv_flags |= IFF_UNICAST_FLT;
1490
e0244903
JK
1491 dev->hw_features |= hw_features;
1492
0e7b3644
AD
1493 return dev;
1494}
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