1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* Copyright(c) 2013 - 2019 Intel Corporation. */ |
3 | |
4 | #include "fm10k.h" |
5 | #include <linux/vmalloc.h> |
6 | #include <net/udp_tunnel.h> |
7 | #include <linux/if_macvlan.h> |
8 | |
9 | /** |
10 | * fm10k_setup_tx_resources - allocate Tx resources (Descriptors) |
11 | * @tx_ring: tx descriptor ring (for a specific queue) to setup |
12 | * |
13 | * Return 0 on success, negative on failure |
14 | **/ |
15 | int fm10k_setup_tx_resources(struct fm10k_ring *tx_ring) |
16 | { |
17 | struct device *dev = tx_ring->dev; |
18 | int size; |
19 | |
20 | size = sizeof(struct fm10k_tx_buffer) * tx_ring->count; |
21 | |
22 | tx_ring->tx_buffer = vzalloc(size); |
23 | if (!tx_ring->tx_buffer) |
24 | goto err; |
25 | |
26 | u64_stats_init(syncp: &tx_ring->syncp); |
27 | |
28 | /* round up to nearest 4K */ |
29 | tx_ring->size = tx_ring->count * sizeof(struct fm10k_tx_desc); |
30 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
31 | |
32 | tx_ring->desc = dma_alloc_coherent(dev, size: tx_ring->size, |
33 | dma_handle: &tx_ring->dma, GFP_KERNEL); |
34 | if (!tx_ring->desc) |
35 | goto err; |
36 | |
37 | return 0; |
38 | |
39 | err: |
40 | vfree(addr: tx_ring->tx_buffer); |
41 | tx_ring->tx_buffer = NULL; |
42 | return -ENOMEM; |
43 | } |
44 | |
45 | /** |
46 | * fm10k_setup_all_tx_resources - allocate all queues Tx resources |
47 | * @interface: board private structure |
48 | * |
49 | * If this function returns with an error, then it's possible one or |
50 | * more of the rings is populated (while the rest are not). It is the |
51 | * callers duty to clean those orphaned rings. |
52 | * |
53 | * Return 0 on success, negative on failure |
54 | **/ |
55 | static int fm10k_setup_all_tx_resources(struct fm10k_intfc *interface) |
56 | { |
57 | int i, err; |
58 | |
59 | for (i = 0; i < interface->num_tx_queues; i++) { |
60 | err = fm10k_setup_tx_resources(tx_ring: interface->tx_ring[i]); |
61 | if (!err) |
62 | continue; |
63 | |
64 | netif_err(interface, probe, interface->netdev, |
65 | "Allocation for Tx Queue %u failed\n" , i); |
66 | goto err_setup_tx; |
67 | } |
68 | |
69 | return 0; |
70 | err_setup_tx: |
71 | /* rewind the index freeing the rings as we go */ |
72 | while (i--) |
73 | fm10k_free_tx_resources(interface->tx_ring[i]); |
74 | return err; |
75 | } |
76 | |
77 | /** |
78 | * fm10k_setup_rx_resources - allocate Rx resources (Descriptors) |
79 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
80 | * |
81 | * Returns 0 on success, negative on failure |
82 | **/ |
83 | int fm10k_setup_rx_resources(struct fm10k_ring *rx_ring) |
84 | { |
85 | struct device *dev = rx_ring->dev; |
86 | int size; |
87 | |
88 | size = sizeof(struct fm10k_rx_buffer) * rx_ring->count; |
89 | |
90 | rx_ring->rx_buffer = vzalloc(size); |
91 | if (!rx_ring->rx_buffer) |
92 | goto err; |
93 | |
94 | u64_stats_init(syncp: &rx_ring->syncp); |
95 | |
96 | /* Round up to nearest 4K */ |
97 | rx_ring->size = rx_ring->count * sizeof(union fm10k_rx_desc); |
98 | rx_ring->size = ALIGN(rx_ring->size, 4096); |
99 | |
100 | rx_ring->desc = dma_alloc_coherent(dev, size: rx_ring->size, |
101 | dma_handle: &rx_ring->dma, GFP_KERNEL); |
102 | if (!rx_ring->desc) |
103 | goto err; |
104 | |
105 | return 0; |
106 | err: |
107 | vfree(addr: rx_ring->rx_buffer); |
108 | rx_ring->rx_buffer = NULL; |
109 | return -ENOMEM; |
110 | } |
111 | |
112 | /** |
113 | * fm10k_setup_all_rx_resources - allocate all queues Rx resources |
114 | * @interface: board private structure |
115 | * |
116 | * If this function returns with an error, then it's possible one or |
117 | * more of the rings is populated (while the rest are not). It is the |
118 | * callers duty to clean those orphaned rings. |
119 | * |
120 | * Return 0 on success, negative on failure |
121 | **/ |
122 | static int fm10k_setup_all_rx_resources(struct fm10k_intfc *interface) |
123 | { |
124 | int i, err; |
125 | |
126 | for (i = 0; i < interface->num_rx_queues; i++) { |
127 | err = fm10k_setup_rx_resources(rx_ring: interface->rx_ring[i]); |
128 | if (!err) |
129 | continue; |
130 | |
131 | netif_err(interface, probe, interface->netdev, |
132 | "Allocation for Rx Queue %u failed\n" , i); |
133 | goto err_setup_rx; |
134 | } |
135 | |
136 | return 0; |
137 | err_setup_rx: |
138 | /* rewind the index freeing the rings as we go */ |
139 | while (i--) |
140 | fm10k_free_rx_resources(interface->rx_ring[i]); |
141 | return err; |
142 | } |
143 | |
144 | void fm10k_unmap_and_free_tx_resource(struct fm10k_ring *ring, |
145 | struct fm10k_tx_buffer *tx_buffer) |
146 | { |
147 | if (tx_buffer->skb) { |
148 | dev_kfree_skb_any(skb: tx_buffer->skb); |
149 | if (dma_unmap_len(tx_buffer, len)) |
150 | dma_unmap_single(ring->dev, |
151 | dma_unmap_addr(tx_buffer, dma), |
152 | dma_unmap_len(tx_buffer, len), |
153 | DMA_TO_DEVICE); |
154 | } else if (dma_unmap_len(tx_buffer, len)) { |
155 | dma_unmap_page(ring->dev, |
156 | dma_unmap_addr(tx_buffer, dma), |
157 | dma_unmap_len(tx_buffer, len), |
158 | DMA_TO_DEVICE); |
159 | } |
160 | tx_buffer->next_to_watch = NULL; |
161 | tx_buffer->skb = NULL; |
162 | dma_unmap_len_set(tx_buffer, len, 0); |
163 | /* tx_buffer must be completely set up in the transmit path */ |
164 | } |
165 | |
166 | /** |
167 | * fm10k_clean_tx_ring - Free Tx Buffers |
168 | * @tx_ring: ring to be cleaned |
169 | **/ |
170 | static void fm10k_clean_tx_ring(struct fm10k_ring *tx_ring) |
171 | { |
172 | unsigned long size; |
173 | u16 i; |
174 | |
175 | /* ring already cleared, nothing to do */ |
176 | if (!tx_ring->tx_buffer) |
177 | return; |
178 | |
179 | /* Free all the Tx ring sk_buffs */ |
180 | for (i = 0; i < tx_ring->count; i++) { |
181 | struct fm10k_tx_buffer *tx_buffer = &tx_ring->tx_buffer[i]; |
182 | |
183 | fm10k_unmap_and_free_tx_resource(ring: tx_ring, tx_buffer); |
184 | } |
185 | |
186 | /* reset BQL values */ |
187 | netdev_tx_reset_queue(q: txring_txq(ring: tx_ring)); |
188 | |
189 | size = sizeof(struct fm10k_tx_buffer) * tx_ring->count; |
190 | memset(tx_ring->tx_buffer, 0, size); |
191 | |
192 | /* Zero out the descriptor ring */ |
193 | memset(tx_ring->desc, 0, tx_ring->size); |
194 | } |
195 | |
196 | /** |
197 | * fm10k_free_tx_resources - Free Tx Resources per Queue |
198 | * @tx_ring: Tx descriptor ring for a specific queue |
199 | * |
200 | * Free all transmit software resources |
201 | **/ |
202 | void fm10k_free_tx_resources(struct fm10k_ring *tx_ring) |
203 | { |
204 | fm10k_clean_tx_ring(tx_ring); |
205 | |
206 | vfree(addr: tx_ring->tx_buffer); |
207 | tx_ring->tx_buffer = NULL; |
208 | |
209 | /* if not set, then don't free */ |
210 | if (!tx_ring->desc) |
211 | return; |
212 | |
213 | dma_free_coherent(dev: tx_ring->dev, size: tx_ring->size, |
214 | cpu_addr: tx_ring->desc, dma_handle: tx_ring->dma); |
215 | tx_ring->desc = NULL; |
216 | } |
217 | |
218 | /** |
219 | * fm10k_clean_all_tx_rings - Free Tx Buffers for all queues |
220 | * @interface: board private structure |
221 | **/ |
222 | void fm10k_clean_all_tx_rings(struct fm10k_intfc *interface) |
223 | { |
224 | int i; |
225 | |
226 | for (i = 0; i < interface->num_tx_queues; i++) |
227 | fm10k_clean_tx_ring(tx_ring: interface->tx_ring[i]); |
228 | } |
229 | |
230 | /** |
231 | * fm10k_free_all_tx_resources - Free Tx Resources for All Queues |
232 | * @interface: board private structure |
233 | * |
234 | * Free all transmit software resources |
235 | **/ |
236 | static void fm10k_free_all_tx_resources(struct fm10k_intfc *interface) |
237 | { |
238 | int i = interface->num_tx_queues; |
239 | |
240 | while (i--) |
241 | fm10k_free_tx_resources(tx_ring: interface->tx_ring[i]); |
242 | } |
243 | |
244 | /** |
245 | * fm10k_clean_rx_ring - Free Rx Buffers per Queue |
246 | * @rx_ring: ring to free buffers from |
247 | **/ |
248 | static void fm10k_clean_rx_ring(struct fm10k_ring *rx_ring) |
249 | { |
250 | unsigned long size; |
251 | u16 i; |
252 | |
253 | if (!rx_ring->rx_buffer) |
254 | return; |
255 | |
256 | dev_kfree_skb(rx_ring->skb); |
257 | rx_ring->skb = NULL; |
258 | |
259 | /* Free all the Rx ring sk_buffs */ |
260 | for (i = 0; i < rx_ring->count; i++) { |
261 | struct fm10k_rx_buffer *buffer = &rx_ring->rx_buffer[i]; |
262 | /* clean-up will only set page pointer to NULL */ |
263 | if (!buffer->page) |
264 | continue; |
265 | |
266 | dma_unmap_page(rx_ring->dev, buffer->dma, |
267 | PAGE_SIZE, DMA_FROM_DEVICE); |
268 | __free_page(buffer->page); |
269 | |
270 | buffer->page = NULL; |
271 | } |
272 | |
273 | size = sizeof(struct fm10k_rx_buffer) * rx_ring->count; |
274 | memset(rx_ring->rx_buffer, 0, size); |
275 | |
276 | /* Zero out the descriptor ring */ |
277 | memset(rx_ring->desc, 0, rx_ring->size); |
278 | |
279 | rx_ring->next_to_alloc = 0; |
280 | rx_ring->next_to_clean = 0; |
281 | rx_ring->next_to_use = 0; |
282 | } |
283 | |
284 | /** |
285 | * fm10k_free_rx_resources - Free Rx Resources |
286 | * @rx_ring: ring to clean the resources from |
287 | * |
288 | * Free all receive software resources |
289 | **/ |
290 | void fm10k_free_rx_resources(struct fm10k_ring *rx_ring) |
291 | { |
292 | fm10k_clean_rx_ring(rx_ring); |
293 | |
294 | vfree(addr: rx_ring->rx_buffer); |
295 | rx_ring->rx_buffer = NULL; |
296 | |
297 | /* if not set, then don't free */ |
298 | if (!rx_ring->desc) |
299 | return; |
300 | |
301 | dma_free_coherent(dev: rx_ring->dev, size: rx_ring->size, |
302 | cpu_addr: rx_ring->desc, dma_handle: rx_ring->dma); |
303 | |
304 | rx_ring->desc = NULL; |
305 | } |
306 | |
307 | /** |
308 | * fm10k_clean_all_rx_rings - Free Rx Buffers for all queues |
309 | * @interface: board private structure |
310 | **/ |
311 | void fm10k_clean_all_rx_rings(struct fm10k_intfc *interface) |
312 | { |
313 | int i; |
314 | |
315 | for (i = 0; i < interface->num_rx_queues; i++) |
316 | fm10k_clean_rx_ring(rx_ring: interface->rx_ring[i]); |
317 | } |
318 | |
319 | /** |
320 | * fm10k_free_all_rx_resources - Free Rx Resources for All Queues |
321 | * @interface: board private structure |
322 | * |
323 | * Free all receive software resources |
324 | **/ |
325 | static void fm10k_free_all_rx_resources(struct fm10k_intfc *interface) |
326 | { |
327 | int i = interface->num_rx_queues; |
328 | |
329 | while (i--) |
330 | fm10k_free_rx_resources(rx_ring: interface->rx_ring[i]); |
331 | } |
332 | |
333 | /** |
334 | * fm10k_request_glort_range - Request GLORTs for use in configuring rules |
335 | * @interface: board private structure |
336 | * |
337 | * This function allocates a range of glorts for this interface to use. |
338 | **/ |
339 | static void fm10k_request_glort_range(struct fm10k_intfc *interface) |
340 | { |
341 | struct fm10k_hw *hw = &interface->hw; |
342 | u16 mask = (~hw->mac.dglort_map) >> FM10K_DGLORTMAP_MASK_SHIFT; |
343 | |
344 | /* establish GLORT base */ |
345 | interface->glort = hw->mac.dglort_map & FM10K_DGLORTMAP_NONE; |
346 | interface->glort_count = 0; |
347 | |
348 | /* nothing we can do until mask is allocated */ |
349 | if (hw->mac.dglort_map == FM10K_DGLORTMAP_NONE) |
350 | return; |
351 | |
352 | /* we support 3 possible GLORT configurations. |
353 | * 1: VFs consume all but the last 1 |
354 | * 2: VFs and PF split glorts with possible gap between |
355 | * 3: VFs allocated first 64, all others belong to PF |
356 | */ |
357 | if (mask <= hw->iov.total_vfs) { |
358 | interface->glort_count = 1; |
359 | interface->glort += mask; |
360 | } else if (mask < 64) { |
361 | interface->glort_count = (mask + 1) / 2; |
362 | interface->glort += interface->glort_count; |
363 | } else { |
364 | interface->glort_count = mask - 63; |
365 | interface->glort += 64; |
366 | } |
367 | } |
368 | |
369 | /** |
370 | * fm10k_restore_udp_port_info |
371 | * @interface: board private structure |
372 | * |
373 | * This function restores the value in the tunnel_cfg register(s) after reset |
374 | **/ |
375 | static void fm10k_restore_udp_port_info(struct fm10k_intfc *interface) |
376 | { |
377 | struct fm10k_hw *hw = &interface->hw; |
378 | |
379 | /* only the PF supports configuring tunnels */ |
380 | if (hw->mac.type != fm10k_mac_pf) |
381 | return; |
382 | |
383 | /* restore tunnel configuration register */ |
384 | fm10k_write_reg(hw, FM10K_TUNNEL_CFG, |
385 | ntohs(interface->vxlan_port) | |
386 | (ETH_P_TEB << FM10K_TUNNEL_CFG_NVGRE_SHIFT)); |
387 | |
388 | /* restore Geneve tunnel configuration register */ |
389 | fm10k_write_reg(hw, FM10K_TUNNEL_CFG_GENEVE, |
390 | ntohs(interface->geneve_port)); |
391 | } |
392 | |
393 | /** |
394 | * fm10k_udp_tunnel_sync - Called when UDP tunnel ports change |
395 | * @dev: network interface device structure |
396 | * @table: Tunnel table (according to tables of @fm10k_udp_tunnels) |
397 | * |
398 | * This function is called when a new UDP tunnel port is added or deleted. |
399 | * Due to hardware restrictions, only one port per type can be offloaded at |
400 | * once. Core will send to the driver a port of its choice. |
401 | **/ |
402 | static int fm10k_udp_tunnel_sync(struct net_device *dev, unsigned int table) |
403 | { |
404 | struct fm10k_intfc *interface = netdev_priv(dev); |
405 | struct udp_tunnel_info ti; |
406 | |
407 | udp_tunnel_nic_get_port(dev, table, idx: 0, ti: &ti); |
408 | if (!table) |
409 | interface->vxlan_port = ti.port; |
410 | else |
411 | interface->geneve_port = ti.port; |
412 | |
413 | fm10k_restore_udp_port_info(interface); |
414 | return 0; |
415 | } |
416 | |
417 | static const struct udp_tunnel_nic_info fm10k_udp_tunnels = { |
418 | .sync_table = fm10k_udp_tunnel_sync, |
419 | .tables = { |
420 | { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, }, |
421 | { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_GENEVE, }, |
422 | }, |
423 | }; |
424 | |
425 | /** |
426 | * fm10k_open - Called when a network interface is made active |
427 | * @netdev: network interface device structure |
428 | * |
429 | * Returns 0 on success, negative value on failure |
430 | * |
431 | * The open entry point is called when a network interface is made |
432 | * active by the system (IFF_UP). At this point all resources needed |
433 | * for transmit and receive operations are allocated, the interrupt |
434 | * handler is registered with the OS, the watchdog timer is started, |
435 | * and the stack is notified that the interface is ready. |
436 | **/ |
437 | int fm10k_open(struct net_device *netdev) |
438 | { |
439 | struct fm10k_intfc *interface = netdev_priv(dev: netdev); |
440 | int err; |
441 | |
442 | /* allocate transmit descriptors */ |
443 | err = fm10k_setup_all_tx_resources(interface); |
444 | if (err) |
445 | goto err_setup_tx; |
446 | |
447 | /* allocate receive descriptors */ |
448 | err = fm10k_setup_all_rx_resources(interface); |
449 | if (err) |
450 | goto err_setup_rx; |
451 | |
452 | /* allocate interrupt resources */ |
453 | err = fm10k_qv_request_irq(interface); |
454 | if (err) |
455 | goto err_req_irq; |
456 | |
457 | /* setup GLORT assignment for this port */ |
458 | fm10k_request_glort_range(interface); |
459 | |
460 | /* Notify the stack of the actual queue counts */ |
461 | err = netif_set_real_num_tx_queues(dev: netdev, |
462 | txq: interface->num_tx_queues); |
463 | if (err) |
464 | goto err_set_queues; |
465 | |
466 | err = netif_set_real_num_rx_queues(dev: netdev, |
467 | rxq: interface->num_rx_queues); |
468 | if (err) |
469 | goto err_set_queues; |
470 | |
471 | fm10k_up(interface); |
472 | |
473 | return 0; |
474 | |
475 | err_set_queues: |
476 | fm10k_qv_free_irq(interface); |
477 | err_req_irq: |
478 | fm10k_free_all_rx_resources(interface); |
479 | err_setup_rx: |
480 | fm10k_free_all_tx_resources(interface); |
481 | err_setup_tx: |
482 | return err; |
483 | } |
484 | |
485 | /** |
486 | * fm10k_close - Disables a network interface |
487 | * @netdev: network interface device structure |
488 | * |
489 | * Returns 0, this is not allowed to fail |
490 | * |
491 | * The close entry point is called when an interface is de-activated |
492 | * by the OS. The hardware is still under the drivers control, but |
493 | * needs to be disabled. A global MAC reset is issued to stop the |
494 | * hardware, and all transmit and receive resources are freed. |
495 | **/ |
496 | int fm10k_close(struct net_device *netdev) |
497 | { |
498 | struct fm10k_intfc *interface = netdev_priv(dev: netdev); |
499 | |
500 | fm10k_down(interface); |
501 | |
502 | fm10k_qv_free_irq(interface); |
503 | |
504 | fm10k_free_all_tx_resources(interface); |
505 | fm10k_free_all_rx_resources(interface); |
506 | |
507 | return 0; |
508 | } |
509 | |
510 | static netdev_tx_t fm10k_xmit_frame(struct sk_buff *skb, struct net_device *dev) |
511 | { |
512 | struct fm10k_intfc *interface = netdev_priv(dev); |
513 | int num_tx_queues = READ_ONCE(interface->num_tx_queues); |
514 | unsigned int r_idx = skb->queue_mapping; |
515 | int err; |
516 | |
517 | if (!num_tx_queues) |
518 | return NETDEV_TX_BUSY; |
519 | |
520 | if ((skb->protocol == htons(ETH_P_8021Q)) && |
521 | !skb_vlan_tag_present(skb)) { |
522 | /* FM10K only supports hardware tagging, any tags in frame |
523 | * are considered 2nd level or "outer" tags |
524 | */ |
525 | struct vlan_hdr *vhdr; |
526 | __be16 proto; |
527 | |
528 | /* make sure skb is not shared */ |
529 | skb = skb_share_check(skb, GFP_ATOMIC); |
530 | if (!skb) |
531 | return NETDEV_TX_OK; |
532 | |
533 | /* make sure there is enough room to move the ethernet header */ |
534 | if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN))) |
535 | return NETDEV_TX_OK; |
536 | |
537 | /* verify the skb head is not shared */ |
538 | err = skb_cow_head(skb, headroom: 0); |
539 | if (err) { |
540 | dev_kfree_skb(skb); |
541 | return NETDEV_TX_OK; |
542 | } |
543 | |
544 | /* locate VLAN header */ |
545 | vhdr = (struct vlan_hdr *)(skb->data + ETH_HLEN); |
546 | |
547 | /* pull the 2 key pieces of data out of it */ |
548 | __vlan_hwaccel_put_tag(skb, |
549 | htons(ETH_P_8021Q), |
550 | ntohs(vhdr->h_vlan_TCI)); |
551 | proto = vhdr->h_vlan_encapsulated_proto; |
552 | skb->protocol = (ntohs(proto) >= 1536) ? proto : |
553 | htons(ETH_P_802_2); |
554 | |
555 | /* squash it by moving the ethernet addresses up 4 bytes */ |
556 | memmove(skb->data + VLAN_HLEN, skb->data, 12); |
557 | __skb_pull(skb, VLAN_HLEN); |
558 | skb_reset_mac_header(skb); |
559 | } |
560 | |
561 | /* The minimum packet size for a single buffer is 17B so pad the skb |
562 | * in order to meet this minimum size requirement. |
563 | */ |
564 | if (unlikely(skb->len < 17)) { |
565 | int pad_len = 17 - skb->len; |
566 | |
567 | if (skb_pad(skb, pad: pad_len)) |
568 | return NETDEV_TX_OK; |
569 | __skb_put(skb, len: pad_len); |
570 | } |
571 | |
572 | if (r_idx >= num_tx_queues) |
573 | r_idx %= num_tx_queues; |
574 | |
575 | err = fm10k_xmit_frame_ring(skb, tx_ring: interface->tx_ring[r_idx]); |
576 | |
577 | return err; |
578 | } |
579 | |
580 | /** |
581 | * fm10k_tx_timeout - Respond to a Tx Hang |
582 | * @netdev: network interface device structure |
583 | * @txqueue: the index of the Tx queue that timed out |
584 | **/ |
585 | static void fm10k_tx_timeout(struct net_device *netdev, unsigned int txqueue) |
586 | { |
587 | struct fm10k_intfc *interface = netdev_priv(dev: netdev); |
588 | struct fm10k_ring *tx_ring; |
589 | bool real_tx_hang = false; |
590 | |
591 | if (txqueue >= interface->num_tx_queues) { |
592 | WARN(1, "invalid Tx queue index %d" , txqueue); |
593 | return; |
594 | } |
595 | |
596 | tx_ring = interface->tx_ring[txqueue]; |
597 | if (check_for_tx_hang(tx_ring) && fm10k_check_tx_hang(tx_ring)) |
598 | real_tx_hang = true; |
599 | |
600 | #define TX_TIMEO_LIMIT 16000 |
601 | if (real_tx_hang) { |
602 | fm10k_tx_timeout_reset(interface); |
603 | } else { |
604 | netif_info(interface, drv, netdev, |
605 | "Fake Tx hang detected with timeout of %d seconds\n" , |
606 | netdev->watchdog_timeo / HZ); |
607 | |
608 | /* fake Tx hang - increase the kernel timeout */ |
609 | if (netdev->watchdog_timeo < TX_TIMEO_LIMIT) |
610 | netdev->watchdog_timeo *= 2; |
611 | } |
612 | } |
613 | |
614 | /** |
615 | * fm10k_host_mbx_ready - Check PF interface's mailbox readiness |
616 | * @interface: board private structure |
617 | * |
618 | * This function checks if the PF interface's mailbox is ready before queueing |
619 | * mailbox messages for transmission. This will prevent filling the TX mailbox |
620 | * queue when the receiver is not ready. VF interfaces are exempt from this |
621 | * check since it will block all PF-VF mailbox messages from being sent from |
622 | * the VF to the PF at initialization. |
623 | **/ |
624 | static bool fm10k_host_mbx_ready(struct fm10k_intfc *interface) |
625 | { |
626 | struct fm10k_hw *hw = &interface->hw; |
627 | |
628 | return (hw->mac.type == fm10k_mac_vf || interface->host_ready); |
629 | } |
630 | |
631 | /** |
632 | * fm10k_queue_vlan_request - Queue a VLAN update request |
633 | * @interface: the fm10k interface structure |
634 | * @vid: the VLAN vid |
635 | * @vsi: VSI index number |
636 | * @set: whether to set or clear |
637 | * |
638 | * This function queues up a VLAN update. For VFs, this must be sent to the |
639 | * managing PF over the mailbox. For PFs, we'll use the same handling so that |
640 | * it's similar to the VF. This avoids storming the PF<->VF mailbox with too |
641 | * many VLAN updates during reset. |
642 | */ |
643 | int fm10k_queue_vlan_request(struct fm10k_intfc *interface, |
644 | u32 vid, u8 vsi, bool set) |
645 | { |
646 | struct fm10k_macvlan_request *request; |
647 | unsigned long flags; |
648 | |
649 | /* This must be atomic since we may be called while the netdev |
650 | * addr_list_lock is held |
651 | */ |
652 | request = kzalloc(size: sizeof(*request), GFP_ATOMIC); |
653 | if (!request) |
654 | return -ENOMEM; |
655 | |
656 | request->type = FM10K_VLAN_REQUEST; |
657 | request->vlan.vid = vid; |
658 | request->vlan.vsi = vsi; |
659 | request->set = set; |
660 | |
661 | spin_lock_irqsave(&interface->macvlan_lock, flags); |
662 | list_add_tail(new: &request->list, head: &interface->macvlan_requests); |
663 | spin_unlock_irqrestore(lock: &interface->macvlan_lock, flags); |
664 | |
665 | fm10k_macvlan_schedule(interface); |
666 | |
667 | return 0; |
668 | } |
669 | |
670 | /** |
671 | * fm10k_queue_mac_request - Queue a MAC update request |
672 | * @interface: the fm10k interface structure |
673 | * @glort: the target glort for this update |
674 | * @addr: the address to update |
675 | * @vid: the vid to update |
676 | * @set: whether to add or remove |
677 | * |
678 | * This function queues up a MAC request for sending to the switch manager. |
679 | * A separate thread monitors the queue and sends updates to the switch |
680 | * manager. Return 0 on success, and negative error code on failure. |
681 | **/ |
682 | int fm10k_queue_mac_request(struct fm10k_intfc *interface, u16 glort, |
683 | const unsigned char *addr, u16 vid, bool set) |
684 | { |
685 | struct fm10k_macvlan_request *request; |
686 | unsigned long flags; |
687 | |
688 | /* This must be atomic since we may be called while the netdev |
689 | * addr_list_lock is held |
690 | */ |
691 | request = kzalloc(size: sizeof(*request), GFP_ATOMIC); |
692 | if (!request) |
693 | return -ENOMEM; |
694 | |
695 | if (is_multicast_ether_addr(addr)) |
696 | request->type = FM10K_MC_MAC_REQUEST; |
697 | else |
698 | request->type = FM10K_UC_MAC_REQUEST; |
699 | |
700 | ether_addr_copy(dst: request->mac.addr, src: addr); |
701 | request->mac.glort = glort; |
702 | request->mac.vid = vid; |
703 | request->set = set; |
704 | |
705 | spin_lock_irqsave(&interface->macvlan_lock, flags); |
706 | list_add_tail(new: &request->list, head: &interface->macvlan_requests); |
707 | spin_unlock_irqrestore(lock: &interface->macvlan_lock, flags); |
708 | |
709 | fm10k_macvlan_schedule(interface); |
710 | |
711 | return 0; |
712 | } |
713 | |
714 | /** |
715 | * fm10k_clear_macvlan_queue - Cancel pending updates for a given glort |
716 | * @interface: the fm10k interface structure |
717 | * @glort: the target glort to clear |
718 | * @vlans: true to clear VLAN messages, false to ignore them |
719 | * |
720 | * Cancel any outstanding MAC/VLAN requests for a given glort. This is |
721 | * expected to be called when a logical port goes down. |
722 | **/ |
723 | void fm10k_clear_macvlan_queue(struct fm10k_intfc *interface, |
724 | u16 glort, bool vlans) |
725 | |
726 | { |
727 | struct fm10k_macvlan_request *r, *tmp; |
728 | unsigned long flags; |
729 | |
730 | spin_lock_irqsave(&interface->macvlan_lock, flags); |
731 | |
732 | /* Free any outstanding MAC/VLAN requests for this interface */ |
733 | list_for_each_entry_safe(r, tmp, &interface->macvlan_requests, list) { |
734 | switch (r->type) { |
735 | case FM10K_MC_MAC_REQUEST: |
736 | case FM10K_UC_MAC_REQUEST: |
737 | /* Don't free requests for other interfaces */ |
738 | if (r->mac.glort != glort) |
739 | break; |
740 | fallthrough; |
741 | case FM10K_VLAN_REQUEST: |
742 | if (vlans) { |
743 | list_del(entry: &r->list); |
744 | kfree(objp: r); |
745 | } |
746 | break; |
747 | } |
748 | } |
749 | |
750 | spin_unlock_irqrestore(lock: &interface->macvlan_lock, flags); |
751 | } |
752 | |
753 | static int fm10k_uc_vlan_unsync(struct net_device *netdev, |
754 | const unsigned char *uc_addr) |
755 | { |
756 | struct fm10k_intfc *interface = netdev_priv(dev: netdev); |
757 | u16 glort = interface->glort; |
758 | u16 vid = interface->vid; |
759 | bool set = !!(vid / VLAN_N_VID); |
760 | int err; |
761 | |
762 | /* drop any leading bits on the VLAN ID */ |
763 | vid &= VLAN_N_VID - 1; |
764 | |
765 | err = fm10k_queue_mac_request(interface, glort, addr: uc_addr, vid, set); |
766 | if (err) |
767 | return err; |
768 | |
769 | /* return non-zero value as we are only doing a partial sync/unsync */ |
770 | return 1; |
771 | } |
772 | |
773 | static int fm10k_mc_vlan_unsync(struct net_device *netdev, |
774 | const unsigned char *mc_addr) |
775 | { |
776 | struct fm10k_intfc *interface = netdev_priv(dev: netdev); |
777 | u16 glort = interface->glort; |
778 | u16 vid = interface->vid; |
779 | bool set = !!(vid / VLAN_N_VID); |
780 | int err; |
781 | |
782 | /* drop any leading bits on the VLAN ID */ |
783 | vid &= VLAN_N_VID - 1; |
784 | |
785 | err = fm10k_queue_mac_request(interface, glort, addr: mc_addr, vid, set); |
786 | if (err) |
787 | return err; |
788 | |
789 | /* return non-zero value as we are only doing a partial sync/unsync */ |
790 | return 1; |
791 | } |
792 | |
793 | static int fm10k_update_vid(struct net_device *netdev, u16 vid, bool set) |
794 | { |
795 | struct fm10k_intfc *interface = netdev_priv(dev: netdev); |
796 | struct fm10k_l2_accel *l2_accel = interface->l2_accel; |
797 | struct fm10k_hw *hw = &interface->hw; |
798 | u16 glort; |
799 | s32 err; |
800 | int i; |
801 | |
802 | /* updates do not apply to VLAN 0 */ |
803 | if (!vid) |
804 | return 0; |
805 | |
806 | if (vid >= VLAN_N_VID) |
807 | return -EINVAL; |
808 | |
809 | /* Verify that we have permission to add VLANs. If this is a request |
810 | * to remove a VLAN, we still want to allow the user to remove the |
811 | * VLAN device. In that case, we need to clear the bit in the |
812 | * active_vlans bitmask. |
813 | */ |
814 | if (set && hw->mac.vlan_override) |
815 | return -EACCES; |
816 | |
817 | /* update active_vlans bitmask */ |
818 | set_bit(nr: vid, addr: interface->active_vlans); |
819 | if (!set) |
820 | clear_bit(nr: vid, addr: interface->active_vlans); |
821 | |
822 | /* disable the default VLAN ID on ring if we have an active VLAN */ |
823 | for (i = 0; i < interface->num_rx_queues; i++) { |
824 | struct fm10k_ring *rx_ring = interface->rx_ring[i]; |
825 | u16 rx_vid = rx_ring->vid & (VLAN_N_VID - 1); |
826 | |
827 | if (test_bit(rx_vid, interface->active_vlans)) |
828 | rx_ring->vid |= FM10K_VLAN_CLEAR; |
829 | else |
830 | rx_ring->vid &= ~FM10K_VLAN_CLEAR; |
831 | } |
832 | |
833 | /* If our VLAN has been overridden, there is no reason to send VLAN |
834 | * removal requests as they will be silently ignored. |
835 | */ |
836 | if (hw->mac.vlan_override) |
837 | return 0; |
838 | |
839 | /* Do not remove default VLAN ID related entries from VLAN and MAC |
840 | * tables |
841 | */ |
842 | if (!set && vid == hw->mac.default_vid) |
843 | return 0; |
844 | |
845 | /* Do not throw an error if the interface is down. We will sync once |
846 | * we come up |
847 | */ |
848 | if (test_bit(__FM10K_DOWN, interface->state)) |
849 | return 0; |
850 | |
851 | fm10k_mbx_lock(interface); |
852 | |
853 | /* only need to update the VLAN if not in promiscuous mode */ |
854 | if (!(netdev->flags & IFF_PROMISC)) { |
855 | err = fm10k_queue_vlan_request(interface, vid, vsi: 0, set); |
856 | if (err) |
857 | goto err_out; |
858 | } |
859 | |
860 | /* Update our base MAC address */ |
861 | err = fm10k_queue_mac_request(interface, glort: interface->glort, |
862 | addr: hw->mac.addr, vid, set); |
863 | if (err) |
864 | goto err_out; |
865 | |
866 | /* Update L2 accelerated macvlan addresses */ |
867 | if (l2_accel) { |
868 | for (i = 0; i < l2_accel->size; i++) { |
869 | struct net_device *sdev = l2_accel->macvlan[i]; |
870 | |
871 | if (!sdev) |
872 | continue; |
873 | |
874 | glort = l2_accel->dglort + 1 + i; |
875 | |
876 | fm10k_queue_mac_request(interface, glort, |
877 | addr: sdev->dev_addr, |
878 | vid, set); |
879 | } |
880 | } |
881 | |
882 | /* set VLAN ID prior to syncing/unsyncing the VLAN */ |
883 | interface->vid = vid + (set ? VLAN_N_VID : 0); |
884 | |
885 | /* Update the unicast and multicast address list to add/drop VLAN */ |
886 | __dev_uc_unsync(dev: netdev, unsync: fm10k_uc_vlan_unsync); |
887 | __dev_mc_unsync(dev: netdev, unsync: fm10k_mc_vlan_unsync); |
888 | |
889 | err_out: |
890 | fm10k_mbx_unlock(interface); |
891 | |
892 | return err; |
893 | } |
894 | |
895 | static int fm10k_vlan_rx_add_vid(struct net_device *netdev, |
896 | __always_unused __be16 proto, u16 vid) |
897 | { |
898 | /* update VLAN and address table based on changes */ |
899 | return fm10k_update_vid(netdev, vid, set: true); |
900 | } |
901 | |
902 | static int fm10k_vlan_rx_kill_vid(struct net_device *netdev, |
903 | __always_unused __be16 proto, u16 vid) |
904 | { |
905 | /* update VLAN and address table based on changes */ |
906 | return fm10k_update_vid(netdev, vid, set: false); |
907 | } |
908 | |
909 | static u16 fm10k_find_next_vlan(struct fm10k_intfc *interface, u16 vid) |
910 | { |
911 | struct fm10k_hw *hw = &interface->hw; |
912 | u16 default_vid = hw->mac.default_vid; |
913 | u16 vid_limit = vid < default_vid ? default_vid : VLAN_N_VID; |
914 | |
915 | vid = find_next_bit(addr: interface->active_vlans, size: vid_limit, offset: ++vid); |
916 | |
917 | return vid; |
918 | } |
919 | |
920 | static void fm10k_clear_unused_vlans(struct fm10k_intfc *interface) |
921 | { |
922 | u32 vid, prev_vid; |
923 | |
924 | /* loop through and find any gaps in the table */ |
925 | for (vid = 0, prev_vid = 0; |
926 | prev_vid < VLAN_N_VID; |
927 | prev_vid = vid + 1, vid = fm10k_find_next_vlan(interface, vid)) { |
928 | if (prev_vid == vid) |
929 | continue; |
930 | |
931 | /* send request to clear multiple bits at a time */ |
932 | prev_vid += (vid - prev_vid - 1) << FM10K_VLAN_LENGTH_SHIFT; |
933 | fm10k_queue_vlan_request(interface, vid: prev_vid, vsi: 0, set: false); |
934 | } |
935 | } |
936 | |
937 | static int __fm10k_uc_sync(struct net_device *dev, |
938 | const unsigned char *addr, bool sync) |
939 | { |
940 | struct fm10k_intfc *interface = netdev_priv(dev); |
941 | u16 vid, glort = interface->glort; |
942 | s32 err; |
943 | |
944 | if (!is_valid_ether_addr(addr)) |
945 | return -EADDRNOTAVAIL; |
946 | |
947 | for (vid = fm10k_find_next_vlan(interface, vid: 0); |
948 | vid < VLAN_N_VID; |
949 | vid = fm10k_find_next_vlan(interface, vid)) { |
950 | err = fm10k_queue_mac_request(interface, glort, |
951 | addr, vid, set: sync); |
952 | if (err) |
953 | return err; |
954 | } |
955 | |
956 | return 0; |
957 | } |
958 | |
959 | static int fm10k_uc_sync(struct net_device *dev, |
960 | const unsigned char *addr) |
961 | { |
962 | return __fm10k_uc_sync(dev, addr, sync: true); |
963 | } |
964 | |
965 | static int fm10k_uc_unsync(struct net_device *dev, |
966 | const unsigned char *addr) |
967 | { |
968 | return __fm10k_uc_sync(dev, addr, sync: false); |
969 | } |
970 | |
971 | static int fm10k_set_mac(struct net_device *dev, void *p) |
972 | { |
973 | struct fm10k_intfc *interface = netdev_priv(dev); |
974 | struct fm10k_hw *hw = &interface->hw; |
975 | struct sockaddr *addr = p; |
976 | s32 err = 0; |
977 | |
978 | if (!is_valid_ether_addr(addr: addr->sa_data)) |
979 | return -EADDRNOTAVAIL; |
980 | |
981 | if (dev->flags & IFF_UP) { |
982 | /* setting MAC address requires mailbox */ |
983 | fm10k_mbx_lock(interface); |
984 | |
985 | err = fm10k_uc_sync(dev, addr: addr->sa_data); |
986 | if (!err) |
987 | fm10k_uc_unsync(dev, addr: hw->mac.addr); |
988 | |
989 | fm10k_mbx_unlock(interface); |
990 | } |
991 | |
992 | if (!err) { |
993 | eth_hw_addr_set(dev, addr: addr->sa_data); |
994 | ether_addr_copy(dst: hw->mac.addr, src: addr->sa_data); |
995 | dev->addr_assign_type &= ~NET_ADDR_RANDOM; |
996 | } |
997 | |
998 | /* if we had a mailbox error suggest trying again */ |
999 | return err ? -EAGAIN : 0; |
1000 | } |
1001 | |
1002 | static int __fm10k_mc_sync(struct net_device *dev, |
1003 | const unsigned char *addr, bool sync) |
1004 | { |
1005 | struct fm10k_intfc *interface = netdev_priv(dev); |
1006 | u16 vid, glort = interface->glort; |
1007 | s32 err; |
1008 | |
1009 | if (!is_multicast_ether_addr(addr)) |
1010 | return -EADDRNOTAVAIL; |
1011 | |
1012 | for (vid = fm10k_find_next_vlan(interface, vid: 0); |
1013 | vid < VLAN_N_VID; |
1014 | vid = fm10k_find_next_vlan(interface, vid)) { |
1015 | err = fm10k_queue_mac_request(interface, glort, |
1016 | addr, vid, set: sync); |
1017 | if (err) |
1018 | return err; |
1019 | } |
1020 | |
1021 | return 0; |
1022 | } |
1023 | |
1024 | static int fm10k_mc_sync(struct net_device *dev, |
1025 | const unsigned char *addr) |
1026 | { |
1027 | return __fm10k_mc_sync(dev, addr, sync: true); |
1028 | } |
1029 | |
1030 | static int fm10k_mc_unsync(struct net_device *dev, |
1031 | const unsigned char *addr) |
1032 | { |
1033 | return __fm10k_mc_sync(dev, addr, sync: false); |
1034 | } |
1035 | |
1036 | static void fm10k_set_rx_mode(struct net_device *dev) |
1037 | { |
1038 | struct fm10k_intfc *interface = netdev_priv(dev); |
1039 | struct fm10k_hw *hw = &interface->hw; |
1040 | int xcast_mode; |
1041 | |
1042 | /* no need to update the harwdare if we are not running */ |
1043 | if (!(dev->flags & IFF_UP)) |
1044 | return; |
1045 | |
1046 | /* determine new mode based on flags */ |
1047 | xcast_mode = (dev->flags & IFF_PROMISC) ? FM10K_XCAST_MODE_PROMISC : |
1048 | (dev->flags & IFF_ALLMULTI) ? FM10K_XCAST_MODE_ALLMULTI : |
1049 | (dev->flags & (IFF_BROADCAST | IFF_MULTICAST)) ? |
1050 | FM10K_XCAST_MODE_MULTI : FM10K_XCAST_MODE_NONE; |
1051 | |
1052 | fm10k_mbx_lock(interface); |
1053 | |
1054 | /* update xcast mode first, but only if it changed */ |
1055 | if (interface->xcast_mode != xcast_mode) { |
1056 | /* update VLAN table when entering promiscuous mode */ |
1057 | if (xcast_mode == FM10K_XCAST_MODE_PROMISC) |
1058 | fm10k_queue_vlan_request(interface, FM10K_VLAN_ALL, |
1059 | vsi: 0, set: true); |
1060 | |
1061 | /* clear VLAN table when exiting promiscuous mode */ |
1062 | if (interface->xcast_mode == FM10K_XCAST_MODE_PROMISC) |
1063 | fm10k_clear_unused_vlans(interface); |
1064 | |
1065 | /* update xcast mode if host's mailbox is ready */ |
1066 | if (fm10k_host_mbx_ready(interface)) |
1067 | hw->mac.ops.update_xcast_mode(hw, interface->glort, |
1068 | xcast_mode); |
1069 | |
1070 | /* record updated xcast mode state */ |
1071 | interface->xcast_mode = xcast_mode; |
1072 | } |
1073 | |
1074 | /* synchronize all of the addresses */ |
1075 | __dev_uc_sync(dev, sync: fm10k_uc_sync, unsync: fm10k_uc_unsync); |
1076 | __dev_mc_sync(dev, sync: fm10k_mc_sync, unsync: fm10k_mc_unsync); |
1077 | |
1078 | fm10k_mbx_unlock(interface); |
1079 | } |
1080 | |
1081 | void fm10k_restore_rx_state(struct fm10k_intfc *interface) |
1082 | { |
1083 | struct fm10k_l2_accel *l2_accel = interface->l2_accel; |
1084 | struct net_device *netdev = interface->netdev; |
1085 | struct fm10k_hw *hw = &interface->hw; |
1086 | int xcast_mode, i; |
1087 | u16 vid, glort; |
1088 | |
1089 | /* record glort for this interface */ |
1090 | glort = interface->glort; |
1091 | |
1092 | /* convert interface flags to xcast mode */ |
1093 | if (netdev->flags & IFF_PROMISC) |
1094 | xcast_mode = FM10K_XCAST_MODE_PROMISC; |
1095 | else if (netdev->flags & IFF_ALLMULTI) |
1096 | xcast_mode = FM10K_XCAST_MODE_ALLMULTI; |
1097 | else if (netdev->flags & (IFF_BROADCAST | IFF_MULTICAST)) |
1098 | xcast_mode = FM10K_XCAST_MODE_MULTI; |
1099 | else |
1100 | xcast_mode = FM10K_XCAST_MODE_NONE; |
1101 | |
1102 | fm10k_mbx_lock(interface); |
1103 | |
1104 | /* Enable logical port if host's mailbox is ready */ |
1105 | if (fm10k_host_mbx_ready(interface)) |
1106 | hw->mac.ops.update_lport_state(hw, glort, |
1107 | interface->glort_count, true); |
1108 | |
1109 | /* update VLAN table */ |
1110 | fm10k_queue_vlan_request(interface, FM10K_VLAN_ALL, vsi: 0, |
1111 | set: xcast_mode == FM10K_XCAST_MODE_PROMISC); |
1112 | |
1113 | /* update table with current entries */ |
1114 | for (vid = fm10k_find_next_vlan(interface, vid: 0); |
1115 | vid < VLAN_N_VID; |
1116 | vid = fm10k_find_next_vlan(interface, vid)) { |
1117 | fm10k_queue_vlan_request(interface, vid, vsi: 0, set: true); |
1118 | |
1119 | fm10k_queue_mac_request(interface, glort, |
1120 | addr: hw->mac.addr, vid, set: true); |
1121 | |
1122 | /* synchronize macvlan addresses */ |
1123 | if (l2_accel) { |
1124 | for (i = 0; i < l2_accel->size; i++) { |
1125 | struct net_device *sdev = l2_accel->macvlan[i]; |
1126 | |
1127 | if (!sdev) |
1128 | continue; |
1129 | |
1130 | glort = l2_accel->dglort + 1 + i; |
1131 | |
1132 | fm10k_queue_mac_request(interface, glort, |
1133 | addr: sdev->dev_addr, |
1134 | vid, set: true); |
1135 | } |
1136 | } |
1137 | } |
1138 | |
1139 | /* update xcast mode before synchronizing addresses if host's mailbox |
1140 | * is ready |
1141 | */ |
1142 | if (fm10k_host_mbx_ready(interface)) |
1143 | hw->mac.ops.update_xcast_mode(hw, glort, xcast_mode); |
1144 | |
1145 | /* synchronize all of the addresses */ |
1146 | __dev_uc_sync(dev: netdev, sync: fm10k_uc_sync, unsync: fm10k_uc_unsync); |
1147 | __dev_mc_sync(dev: netdev, sync: fm10k_mc_sync, unsync: fm10k_mc_unsync); |
1148 | |
1149 | /* synchronize macvlan addresses */ |
1150 | if (l2_accel) { |
1151 | for (i = 0; i < l2_accel->size; i++) { |
1152 | struct net_device *sdev = l2_accel->macvlan[i]; |
1153 | |
1154 | if (!sdev) |
1155 | continue; |
1156 | |
1157 | glort = l2_accel->dglort + 1 + i; |
1158 | |
1159 | hw->mac.ops.update_xcast_mode(hw, glort, |
1160 | FM10K_XCAST_MODE_NONE); |
1161 | fm10k_queue_mac_request(interface, glort, |
1162 | addr: sdev->dev_addr, |
1163 | vid: hw->mac.default_vid, set: true); |
1164 | } |
1165 | } |
1166 | |
1167 | fm10k_mbx_unlock(interface); |
1168 | |
1169 | /* record updated xcast mode state */ |
1170 | interface->xcast_mode = xcast_mode; |
1171 | |
1172 | /* Restore tunnel configuration */ |
1173 | fm10k_restore_udp_port_info(interface); |
1174 | } |
1175 | |
1176 | void fm10k_reset_rx_state(struct fm10k_intfc *interface) |
1177 | { |
1178 | struct net_device *netdev = interface->netdev; |
1179 | struct fm10k_hw *hw = &interface->hw; |
1180 | |
1181 | /* Wait for MAC/VLAN work to finish */ |
1182 | while (test_bit(__FM10K_MACVLAN_SCHED, interface->state)) |
1183 | usleep_range(min: 1000, max: 2000); |
1184 | |
1185 | /* Cancel pending MAC/VLAN requests */ |
1186 | fm10k_clear_macvlan_queue(interface, glort: interface->glort, vlans: true); |
1187 | |
1188 | fm10k_mbx_lock(interface); |
1189 | |
1190 | /* clear the logical port state on lower device if host's mailbox is |
1191 | * ready |
1192 | */ |
1193 | if (fm10k_host_mbx_ready(interface)) |
1194 | hw->mac.ops.update_lport_state(hw, interface->glort, |
1195 | interface->glort_count, false); |
1196 | |
1197 | fm10k_mbx_unlock(interface); |
1198 | |
1199 | /* reset flags to default state */ |
1200 | interface->xcast_mode = FM10K_XCAST_MODE_NONE; |
1201 | |
1202 | /* clear the sync flag since the lport has been dropped */ |
1203 | __dev_uc_unsync(dev: netdev, NULL); |
1204 | __dev_mc_unsync(dev: netdev, NULL); |
1205 | } |
1206 | |
1207 | /** |
1208 | * fm10k_get_stats64 - Get System Network Statistics |
1209 | * @netdev: network interface device structure |
1210 | * @stats: storage space for 64bit statistics |
1211 | * |
1212 | * Obtain 64bit statistics in a way that is safe for both 32bit and 64bit |
1213 | * architectures. |
1214 | */ |
1215 | static void fm10k_get_stats64(struct net_device *netdev, |
1216 | struct rtnl_link_stats64 *stats) |
1217 | { |
1218 | struct fm10k_intfc *interface = netdev_priv(dev: netdev); |
1219 | struct fm10k_ring *ring; |
1220 | unsigned int start, i; |
1221 | u64 bytes, packets; |
1222 | |
1223 | rcu_read_lock(); |
1224 | |
1225 | for (i = 0; i < interface->num_rx_queues; i++) { |
1226 | ring = READ_ONCE(interface->rx_ring[i]); |
1227 | |
1228 | if (!ring) |
1229 | continue; |
1230 | |
1231 | do { |
1232 | start = u64_stats_fetch_begin(syncp: &ring->syncp); |
1233 | packets = ring->stats.packets; |
1234 | bytes = ring->stats.bytes; |
1235 | } while (u64_stats_fetch_retry(syncp: &ring->syncp, start)); |
1236 | |
1237 | stats->rx_packets += packets; |
1238 | stats->rx_bytes += bytes; |
1239 | } |
1240 | |
1241 | for (i = 0; i < interface->num_tx_queues; i++) { |
1242 | ring = READ_ONCE(interface->tx_ring[i]); |
1243 | |
1244 | if (!ring) |
1245 | continue; |
1246 | |
1247 | do { |
1248 | start = u64_stats_fetch_begin(syncp: &ring->syncp); |
1249 | packets = ring->stats.packets; |
1250 | bytes = ring->stats.bytes; |
1251 | } while (u64_stats_fetch_retry(syncp: &ring->syncp, start)); |
1252 | |
1253 | stats->tx_packets += packets; |
1254 | stats->tx_bytes += bytes; |
1255 | } |
1256 | |
1257 | rcu_read_unlock(); |
1258 | |
1259 | /* following stats updated by fm10k_service_task() */ |
1260 | stats->rx_missed_errors = netdev->stats.rx_missed_errors; |
1261 | } |
1262 | |
1263 | int fm10k_setup_tc(struct net_device *dev, u8 tc) |
1264 | { |
1265 | struct fm10k_intfc *interface = netdev_priv(dev); |
1266 | int err; |
1267 | |
1268 | /* Currently only the PF supports priority classes */ |
1269 | if (tc && (interface->hw.mac.type != fm10k_mac_pf)) |
1270 | return -EINVAL; |
1271 | |
1272 | /* Hardware supports up to 8 traffic classes */ |
1273 | if (tc > 8) |
1274 | return -EINVAL; |
1275 | |
1276 | /* Hardware has to reinitialize queues to match packet |
1277 | * buffer alignment. Unfortunately, the hardware is not |
1278 | * flexible enough to do this dynamically. |
1279 | */ |
1280 | if (netif_running(dev)) |
1281 | fm10k_close(netdev: dev); |
1282 | |
1283 | fm10k_mbx_free_irq(interface); |
1284 | |
1285 | fm10k_clear_queueing_scheme(interface); |
1286 | |
1287 | /* we expect the prio_tc map to be repopulated later */ |
1288 | netdev_reset_tc(dev); |
1289 | netdev_set_num_tc(dev, num_tc: tc); |
1290 | |
1291 | err = fm10k_init_queueing_scheme(interface); |
1292 | if (err) |
1293 | goto err_queueing_scheme; |
1294 | |
1295 | err = fm10k_mbx_request_irq(interface); |
1296 | if (err) |
1297 | goto err_mbx_irq; |
1298 | |
1299 | err = netif_running(dev) ? fm10k_open(netdev: dev) : 0; |
1300 | if (err) |
1301 | goto err_open; |
1302 | |
1303 | /* flag to indicate SWPRI has yet to be updated */ |
1304 | set_bit(nr: FM10K_FLAG_SWPRI_CONFIG, addr: interface->flags); |
1305 | |
1306 | return 0; |
1307 | err_open: |
1308 | fm10k_mbx_free_irq(interface); |
1309 | err_mbx_irq: |
1310 | fm10k_clear_queueing_scheme(interface); |
1311 | err_queueing_scheme: |
1312 | netif_device_detach(dev); |
1313 | |
1314 | return err; |
1315 | } |
1316 | |
1317 | static int __fm10k_setup_tc(struct net_device *dev, enum tc_setup_type type, |
1318 | void *type_data) |
1319 | { |
1320 | struct tc_mqprio_qopt *mqprio = type_data; |
1321 | |
1322 | if (type != TC_SETUP_QDISC_MQPRIO) |
1323 | return -EOPNOTSUPP; |
1324 | |
1325 | mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; |
1326 | |
1327 | return fm10k_setup_tc(dev, tc: mqprio->num_tc); |
1328 | } |
1329 | |
1330 | static void fm10k_assign_l2_accel(struct fm10k_intfc *interface, |
1331 | struct fm10k_l2_accel *l2_accel) |
1332 | { |
1333 | int i; |
1334 | |
1335 | for (i = 0; i < interface->num_rx_queues; i++) { |
1336 | struct fm10k_ring *ring = interface->rx_ring[i]; |
1337 | |
1338 | rcu_assign_pointer(ring->l2_accel, l2_accel); |
1339 | } |
1340 | |
1341 | interface->l2_accel = l2_accel; |
1342 | } |
1343 | |
1344 | static void *fm10k_dfwd_add_station(struct net_device *dev, |
1345 | struct net_device *sdev) |
1346 | { |
1347 | struct fm10k_intfc *interface = netdev_priv(dev); |
1348 | struct fm10k_l2_accel *l2_accel = interface->l2_accel; |
1349 | struct fm10k_l2_accel *old_l2_accel = NULL; |
1350 | struct fm10k_dglort_cfg dglort = { 0 }; |
1351 | struct fm10k_hw *hw = &interface->hw; |
1352 | int size, i; |
1353 | u16 vid, glort; |
1354 | |
1355 | /* The hardware supported by fm10k only filters on the destination MAC |
1356 | * address. In order to avoid issues we only support offloading modes |
1357 | * where the hardware can actually provide the functionality. |
1358 | */ |
1359 | if (!macvlan_supports_dest_filter(dev: sdev)) |
1360 | return ERR_PTR(error: -EMEDIUMTYPE); |
1361 | |
1362 | /* allocate l2 accel structure if it is not available */ |
1363 | if (!l2_accel) { |
1364 | /* verify there is enough free GLORTs to support l2_accel */ |
1365 | if (interface->glort_count < 7) |
1366 | return ERR_PTR(error: -EBUSY); |
1367 | |
1368 | size = offsetof(struct fm10k_l2_accel, macvlan[7]); |
1369 | l2_accel = kzalloc(size, GFP_KERNEL); |
1370 | if (!l2_accel) |
1371 | return ERR_PTR(error: -ENOMEM); |
1372 | |
1373 | l2_accel->size = 7; |
1374 | l2_accel->dglort = interface->glort; |
1375 | |
1376 | /* update pointers */ |
1377 | fm10k_assign_l2_accel(interface, l2_accel); |
1378 | /* do not expand if we are at our limit */ |
1379 | } else if ((l2_accel->count == FM10K_MAX_STATIONS) || |
1380 | (l2_accel->count == (interface->glort_count - 1))) { |
1381 | return ERR_PTR(error: -EBUSY); |
1382 | /* expand if we have hit the size limit */ |
1383 | } else if (l2_accel->count == l2_accel->size) { |
1384 | old_l2_accel = l2_accel; |
1385 | size = offsetof(struct fm10k_l2_accel, |
1386 | macvlan[(l2_accel->size * 2) + 1]); |
1387 | l2_accel = kzalloc(size, GFP_KERNEL); |
1388 | if (!l2_accel) |
1389 | return ERR_PTR(error: -ENOMEM); |
1390 | |
1391 | memcpy(l2_accel, old_l2_accel, |
1392 | offsetof(struct fm10k_l2_accel, |
1393 | macvlan[old_l2_accel->size])); |
1394 | |
1395 | l2_accel->size = (old_l2_accel->size * 2) + 1; |
1396 | |
1397 | /* update pointers */ |
1398 | fm10k_assign_l2_accel(interface, l2_accel); |
1399 | kfree_rcu(old_l2_accel, rcu); |
1400 | } |
1401 | |
1402 | /* add macvlan to accel table, and record GLORT for position */ |
1403 | for (i = 0; i < l2_accel->size; i++) { |
1404 | if (!l2_accel->macvlan[i]) |
1405 | break; |
1406 | } |
1407 | |
1408 | /* record station */ |
1409 | l2_accel->macvlan[i] = sdev; |
1410 | l2_accel->count++; |
1411 | |
1412 | /* configure default DGLORT mapping for RSS/DCB */ |
1413 | dglort.idx = fm10k_dglort_pf_rss; |
1414 | dglort.inner_rss = 1; |
1415 | dglort.rss_l = fls(x: interface->ring_feature[RING_F_RSS].mask); |
1416 | dglort.pc_l = fls(x: interface->ring_feature[RING_F_QOS].mask); |
1417 | dglort.glort = interface->glort; |
1418 | dglort.shared_l = fls(x: l2_accel->size); |
1419 | hw->mac.ops.configure_dglort_map(hw, &dglort); |
1420 | |
1421 | /* Add rules for this specific dglort to the switch */ |
1422 | fm10k_mbx_lock(interface); |
1423 | |
1424 | glort = l2_accel->dglort + 1 + i; |
1425 | |
1426 | if (fm10k_host_mbx_ready(interface)) |
1427 | hw->mac.ops.update_xcast_mode(hw, glort, |
1428 | FM10K_XCAST_MODE_NONE); |
1429 | |
1430 | fm10k_queue_mac_request(interface, glort, addr: sdev->dev_addr, |
1431 | vid: hw->mac.default_vid, set: true); |
1432 | |
1433 | for (vid = fm10k_find_next_vlan(interface, vid: 0); |
1434 | vid < VLAN_N_VID; |
1435 | vid = fm10k_find_next_vlan(interface, vid)) |
1436 | fm10k_queue_mac_request(interface, glort, addr: sdev->dev_addr, |
1437 | vid, set: true); |
1438 | |
1439 | fm10k_mbx_unlock(interface); |
1440 | |
1441 | return sdev; |
1442 | } |
1443 | |
1444 | static void fm10k_dfwd_del_station(struct net_device *dev, void *priv) |
1445 | { |
1446 | struct fm10k_intfc *interface = netdev_priv(dev); |
1447 | struct fm10k_l2_accel *l2_accel = READ_ONCE(interface->l2_accel); |
1448 | struct fm10k_dglort_cfg dglort = { 0 }; |
1449 | struct fm10k_hw *hw = &interface->hw; |
1450 | struct net_device *sdev = priv; |
1451 | u16 vid, glort; |
1452 | int i; |
1453 | |
1454 | if (!l2_accel) |
1455 | return; |
1456 | |
1457 | /* search table for matching interface */ |
1458 | for (i = 0; i < l2_accel->size; i++) { |
1459 | if (l2_accel->macvlan[i] == sdev) |
1460 | break; |
1461 | } |
1462 | |
1463 | /* exit if macvlan not found */ |
1464 | if (i == l2_accel->size) |
1465 | return; |
1466 | |
1467 | /* Remove any rules specific to this dglort */ |
1468 | fm10k_mbx_lock(interface); |
1469 | |
1470 | glort = l2_accel->dglort + 1 + i; |
1471 | |
1472 | if (fm10k_host_mbx_ready(interface)) |
1473 | hw->mac.ops.update_xcast_mode(hw, glort, |
1474 | FM10K_XCAST_MODE_NONE); |
1475 | |
1476 | fm10k_queue_mac_request(interface, glort, addr: sdev->dev_addr, |
1477 | vid: hw->mac.default_vid, set: false); |
1478 | |
1479 | for (vid = fm10k_find_next_vlan(interface, vid: 0); |
1480 | vid < VLAN_N_VID; |
1481 | vid = fm10k_find_next_vlan(interface, vid)) |
1482 | fm10k_queue_mac_request(interface, glort, addr: sdev->dev_addr, |
1483 | vid, set: false); |
1484 | |
1485 | fm10k_mbx_unlock(interface); |
1486 | |
1487 | /* record removal */ |
1488 | l2_accel->macvlan[i] = NULL; |
1489 | l2_accel->count--; |
1490 | |
1491 | /* configure default DGLORT mapping for RSS/DCB */ |
1492 | dglort.idx = fm10k_dglort_pf_rss; |
1493 | dglort.inner_rss = 1; |
1494 | dglort.rss_l = fls(x: interface->ring_feature[RING_F_RSS].mask); |
1495 | dglort.pc_l = fls(x: interface->ring_feature[RING_F_QOS].mask); |
1496 | dglort.glort = interface->glort; |
1497 | dglort.shared_l = fls(x: l2_accel->size); |
1498 | hw->mac.ops.configure_dglort_map(hw, &dglort); |
1499 | |
1500 | /* If table is empty remove it */ |
1501 | if (l2_accel->count == 0) { |
1502 | fm10k_assign_l2_accel(interface, NULL); |
1503 | kfree_rcu(l2_accel, rcu); |
1504 | } |
1505 | } |
1506 | |
1507 | static netdev_features_t fm10k_features_check(struct sk_buff *skb, |
1508 | struct net_device *dev, |
1509 | netdev_features_t features) |
1510 | { |
1511 | if (!skb->encapsulation || fm10k_tx_encap_offload(skb)) |
1512 | return features; |
1513 | |
1514 | return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); |
1515 | } |
1516 | |
1517 | static const struct net_device_ops fm10k_netdev_ops = { |
1518 | .ndo_open = fm10k_open, |
1519 | .ndo_stop = fm10k_close, |
1520 | .ndo_validate_addr = eth_validate_addr, |
1521 | .ndo_start_xmit = fm10k_xmit_frame, |
1522 | .ndo_set_mac_address = fm10k_set_mac, |
1523 | .ndo_tx_timeout = fm10k_tx_timeout, |
1524 | .ndo_vlan_rx_add_vid = fm10k_vlan_rx_add_vid, |
1525 | .ndo_vlan_rx_kill_vid = fm10k_vlan_rx_kill_vid, |
1526 | .ndo_set_rx_mode = fm10k_set_rx_mode, |
1527 | .ndo_get_stats64 = fm10k_get_stats64, |
1528 | .ndo_setup_tc = __fm10k_setup_tc, |
1529 | .ndo_set_vf_mac = fm10k_ndo_set_vf_mac, |
1530 | .ndo_set_vf_vlan = fm10k_ndo_set_vf_vlan, |
1531 | .ndo_set_vf_rate = fm10k_ndo_set_vf_bw, |
1532 | .ndo_get_vf_config = fm10k_ndo_get_vf_config, |
1533 | .ndo_get_vf_stats = fm10k_ndo_get_vf_stats, |
1534 | .ndo_dfwd_add_station = fm10k_dfwd_add_station, |
1535 | .ndo_dfwd_del_station = fm10k_dfwd_del_station, |
1536 | .ndo_features_check = fm10k_features_check, |
1537 | }; |
1538 | |
1539 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 |
1540 | |
1541 | struct net_device *fm10k_alloc_netdev(const struct fm10k_info *info) |
1542 | { |
1543 | netdev_features_t hw_features; |
1544 | struct fm10k_intfc *interface; |
1545 | struct net_device *dev; |
1546 | |
1547 | dev = alloc_etherdev_mq(sizeof(struct fm10k_intfc), MAX_QUEUES); |
1548 | if (!dev) |
1549 | return NULL; |
1550 | |
1551 | /* set net device and ethtool ops */ |
1552 | dev->netdev_ops = &fm10k_netdev_ops; |
1553 | fm10k_set_ethtool_ops(dev); |
1554 | |
1555 | /* configure default debug level */ |
1556 | interface = netdev_priv(dev); |
1557 | interface->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; |
1558 | |
1559 | /* configure default features */ |
1560 | dev->features |= NETIF_F_IP_CSUM | |
1561 | NETIF_F_IPV6_CSUM | |
1562 | NETIF_F_SG | |
1563 | NETIF_F_TSO | |
1564 | NETIF_F_TSO6 | |
1565 | NETIF_F_TSO_ECN | |
1566 | NETIF_F_RXHASH | |
1567 | NETIF_F_RXCSUM; |
1568 | |
1569 | /* Only the PF can support VXLAN and NVGRE tunnel offloads */ |
1570 | if (info->mac == fm10k_mac_pf) { |
1571 | dev->hw_enc_features = NETIF_F_IP_CSUM | |
1572 | NETIF_F_TSO | |
1573 | NETIF_F_TSO6 | |
1574 | NETIF_F_TSO_ECN | |
1575 | NETIF_F_GSO_UDP_TUNNEL | |
1576 | NETIF_F_IPV6_CSUM | |
1577 | NETIF_F_SG; |
1578 | |
1579 | dev->features |= NETIF_F_GSO_UDP_TUNNEL; |
1580 | |
1581 | dev->udp_tunnel_nic_info = &fm10k_udp_tunnels; |
1582 | } |
1583 | |
1584 | /* all features defined to this point should be changeable */ |
1585 | hw_features = dev->features; |
1586 | |
1587 | /* allow user to enable L2 forwarding acceleration */ |
1588 | hw_features |= NETIF_F_HW_L2FW_DOFFLOAD; |
1589 | |
1590 | /* configure VLAN features */ |
1591 | dev->vlan_features |= dev->features; |
1592 | |
1593 | /* we want to leave these both on as we cannot disable VLAN tag |
1594 | * insertion or stripping on the hardware since it is contained |
1595 | * in the FTAG and not in the frame itself. |
1596 | */ |
1597 | dev->features |= NETIF_F_HW_VLAN_CTAG_TX | |
1598 | NETIF_F_HW_VLAN_CTAG_RX | |
1599 | NETIF_F_HW_VLAN_CTAG_FILTER; |
1600 | |
1601 | dev->priv_flags |= IFF_UNICAST_FLT; |
1602 | |
1603 | dev->hw_features |= hw_features; |
1604 | |
1605 | /* MTU range: 68 - 15342 */ |
1606 | dev->min_mtu = ETH_MIN_MTU; |
1607 | dev->max_mtu = FM10K_MAX_JUMBO_FRAME_SIZE; |
1608 | |
1609 | return dev; |
1610 | } |
1611 | |