1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
4 * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com>
5 * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
8 #include <linux/kernel.h>
9 #include <linux/module.h>
10 #include <linux/pci.h>
11 #include <linux/interrupt.h>
12 #include <linux/sched.h>
13 #include <linux/wait.h>
14 #include <linux/spinlock.h>
15 #include <linux/sort.h>
16 #include <linux/random.h>
17 #include <linux/netdevice.h>
18 #include <linux/skbuff.h>
19 #include <linux/socket.h>
20 #include <linux/etherdevice.h>
21 #include <linux/ethtool.h>
22 #include <linux/if_ether.h>
23 #include <linux/if_vlan.h>
24 #include <linux/if_bridge.h>
25 #include <linux/bitops.h>
26 #include <linux/ctype.h>
27 #include <linux/workqueue.h>
28 #include <net/switchdev.h>
29 #include <net/rtnetlink.h>
30 #include <net/netevent.h>
32 #include <net/fib_rules.h>
33 #include <net/fib_notifier.h>
34 #include <linux/io-64-nonatomic-lo-hi.h>
35 #include <generated/utsrelease.h>
37 #include "rocker_hw.h"
39 #include "rocker_tlv.h"
41 static const char rocker_driver_name[] = "rocker";
43 static const struct pci_device_id rocker_pci_id_table[] = {
44 {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
49 wait_queue_head_t wait;
54 static void rocker_wait_reset(struct rocker_wait *wait)
60 static void rocker_wait_init(struct rocker_wait *wait)
62 init_waitqueue_head(&wait->wait);
63 rocker_wait_reset(wait);
66 static struct rocker_wait *rocker_wait_create(void)
68 struct rocker_wait *wait;
70 wait = kzalloc(sizeof(*wait), GFP_KERNEL);
76 static void rocker_wait_destroy(struct rocker_wait *wait)
81 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
82 unsigned long timeout)
84 wait_event_timeout(wait->wait, wait->done, HZ / 10);
90 static void rocker_wait_wake_up(struct rocker_wait *wait)
96 static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
98 return rocker->msix_entries[vector].vector;
101 static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
103 return rocker_msix_vector(rocker_port->rocker,
104 ROCKER_MSIX_VEC_TX(rocker_port->port_number));
107 static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
109 return rocker_msix_vector(rocker_port->rocker,
110 ROCKER_MSIX_VEC_RX(rocker_port->port_number));
113 #define rocker_write32(rocker, reg, val) \
114 writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
115 #define rocker_read32(rocker, reg) \
116 readl((rocker)->hw_addr + (ROCKER_ ## reg))
117 #define rocker_write64(rocker, reg, val) \
118 writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
119 #define rocker_read64(rocker, reg) \
120 readq((rocker)->hw_addr + (ROCKER_ ## reg))
122 /*****************************
123 * HW basic testing functions
124 *****************************/
126 static int rocker_reg_test(const struct rocker *rocker)
128 const struct pci_dev *pdev = rocker->pdev;
134 rocker_write32(rocker, TEST_REG, rnd);
135 test_reg = rocker_read32(rocker, TEST_REG);
136 if (test_reg != rnd * 2) {
137 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
144 rnd |= prandom_u32();
145 rocker_write64(rocker, TEST_REG64, rnd);
146 test_reg = rocker_read64(rocker, TEST_REG64);
147 if (test_reg != rnd * 2) {
148 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
156 static int rocker_dma_test_one(const struct rocker *rocker,
157 struct rocker_wait *wait, u32 test_type,
158 dma_addr_t dma_handle, const unsigned char *buf,
159 const unsigned char *expect, size_t size)
161 const struct pci_dev *pdev = rocker->pdev;
164 rocker_wait_reset(wait);
165 rocker_write32(rocker, TEST_DMA_CTRL, test_type);
167 if (!rocker_wait_event_timeout(wait, HZ / 10)) {
168 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
172 for (i = 0; i < size; i++) {
173 if (buf[i] != expect[i]) {
174 dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
175 buf[i], i, expect[i]);
182 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
183 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
185 static int rocker_dma_test_offset(const struct rocker *rocker,
186 struct rocker_wait *wait, int offset)
188 struct pci_dev *pdev = rocker->pdev;
189 unsigned char *alloc;
191 unsigned char *expect;
192 dma_addr_t dma_handle;
196 alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
197 GFP_KERNEL | GFP_DMA);
200 buf = alloc + offset;
201 expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
203 dma_handle = dma_map_single(&pdev->dev, buf, ROCKER_TEST_DMA_BUF_SIZE,
205 if (dma_mapping_error(&pdev->dev, dma_handle)) {
210 rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
211 rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
213 memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
214 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
215 dma_handle, buf, expect,
216 ROCKER_TEST_DMA_BUF_SIZE);
220 memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
221 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
222 dma_handle, buf, expect,
223 ROCKER_TEST_DMA_BUF_SIZE);
227 prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
228 for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
230 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
231 dma_handle, buf, expect,
232 ROCKER_TEST_DMA_BUF_SIZE);
237 dma_unmap_single(&pdev->dev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
245 static int rocker_dma_test(const struct rocker *rocker,
246 struct rocker_wait *wait)
251 for (i = 0; i < 8; i++) {
252 err = rocker_dma_test_offset(rocker, wait, i);
259 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
261 struct rocker_wait *wait = dev_id;
263 rocker_wait_wake_up(wait);
268 static int rocker_basic_hw_test(const struct rocker *rocker)
270 const struct pci_dev *pdev = rocker->pdev;
271 struct rocker_wait wait;
274 err = rocker_reg_test(rocker);
276 dev_err(&pdev->dev, "reg test failed\n");
280 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
281 rocker_test_irq_handler, 0,
282 rocker_driver_name, &wait);
284 dev_err(&pdev->dev, "cannot assign test irq\n");
288 rocker_wait_init(&wait);
289 rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
291 if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
292 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
297 err = rocker_dma_test(rocker, &wait);
299 dev_err(&pdev->dev, "dma test failed\n");
302 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
306 /******************************************
307 * DMA rings and descriptors manipulations
308 ******************************************/
310 static u32 __pos_inc(u32 pos, size_t limit)
312 return ++pos == limit ? 0 : pos;
315 static int rocker_desc_err(const struct rocker_desc_info *desc_info)
317 int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
332 case -ROCKER_EMSGSIZE:
334 case -ROCKER_ENOTSUP:
336 case -ROCKER_ENOBUFS:
343 static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
345 desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
348 static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
350 u32 comp_err = desc_info->desc->comp_err;
352 return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
356 rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
358 return (void *)(uintptr_t)desc_info->desc->cookie;
361 static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
364 desc_info->desc->cookie = (uintptr_t) ptr;
367 static struct rocker_desc_info *
368 rocker_desc_head_get(const struct rocker_dma_ring_info *info)
370 struct rocker_desc_info *desc_info;
371 u32 head = __pos_inc(info->head, info->size);
373 desc_info = &info->desc_info[info->head];
374 if (head == info->tail)
375 return NULL; /* ring full */
376 desc_info->tlv_size = 0;
380 static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
382 desc_info->desc->buf_size = desc_info->data_size;
383 desc_info->desc->tlv_size = desc_info->tlv_size;
386 static void rocker_desc_head_set(const struct rocker *rocker,
387 struct rocker_dma_ring_info *info,
388 const struct rocker_desc_info *desc_info)
390 u32 head = __pos_inc(info->head, info->size);
392 BUG_ON(head == info->tail);
393 rocker_desc_commit(desc_info);
395 rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
398 static struct rocker_desc_info *
399 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
401 struct rocker_desc_info *desc_info;
403 if (info->tail == info->head)
404 return NULL; /* nothing to be done between head and tail */
405 desc_info = &info->desc_info[info->tail];
406 if (!rocker_desc_gen(desc_info))
407 return NULL; /* gen bit not set, desc is not ready yet */
408 info->tail = __pos_inc(info->tail, info->size);
409 desc_info->tlv_size = desc_info->desc->tlv_size;
413 static void rocker_dma_ring_credits_set(const struct rocker *rocker,
414 const struct rocker_dma_ring_info *info,
418 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
421 static unsigned long rocker_dma_ring_size_fix(size_t size)
423 return max(ROCKER_DMA_SIZE_MIN,
424 min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
427 static int rocker_dma_ring_create(const struct rocker *rocker,
430 struct rocker_dma_ring_info *info)
434 BUG_ON(size != rocker_dma_ring_size_fix(size));
439 info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
441 if (!info->desc_info)
444 info->desc = dma_alloc_coherent(&rocker->pdev->dev,
445 info->size * sizeof(*info->desc),
446 &info->mapaddr, GFP_KERNEL);
448 kfree(info->desc_info);
452 for (i = 0; i < info->size; i++)
453 info->desc_info[i].desc = &info->desc[i];
455 rocker_write32(rocker, DMA_DESC_CTRL(info->type),
456 ROCKER_DMA_DESC_CTRL_RESET);
457 rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
458 rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
463 static void rocker_dma_ring_destroy(const struct rocker *rocker,
464 const struct rocker_dma_ring_info *info)
466 rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
468 dma_free_coherent(&rocker->pdev->dev,
469 info->size * sizeof(struct rocker_desc), info->desc,
471 kfree(info->desc_info);
474 static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
475 struct rocker_dma_ring_info *info)
479 BUG_ON(info->head || info->tail);
481 /* When ring is consumer, we need to advance head for each desc.
482 * That tells hw that the desc is ready to be used by it.
484 for (i = 0; i < info->size - 1; i++)
485 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
486 rocker_desc_commit(&info->desc_info[i]);
489 static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
490 const struct rocker_dma_ring_info *info,
491 int direction, size_t buf_size)
493 struct pci_dev *pdev = rocker->pdev;
497 for (i = 0; i < info->size; i++) {
498 struct rocker_desc_info *desc_info = &info->desc_info[i];
499 struct rocker_desc *desc = &info->desc[i];
500 dma_addr_t dma_handle;
503 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
509 dma_handle = dma_map_single(&pdev->dev, buf, buf_size,
511 if (dma_mapping_error(&pdev->dev, dma_handle)) {
517 desc_info->data = buf;
518 desc_info->data_size = buf_size;
519 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
521 desc->buf_addr = dma_handle;
522 desc->buf_size = buf_size;
527 for (i--; i >= 0; i--) {
528 const struct rocker_desc_info *desc_info = &info->desc_info[i];
530 dma_unmap_single(&pdev->dev,
531 dma_unmap_addr(desc_info, mapaddr),
532 desc_info->data_size, direction);
533 kfree(desc_info->data);
538 static void rocker_dma_ring_bufs_free(const struct rocker *rocker,
539 const struct rocker_dma_ring_info *info,
542 struct pci_dev *pdev = rocker->pdev;
545 for (i = 0; i < info->size; i++) {
546 const struct rocker_desc_info *desc_info = &info->desc_info[i];
547 struct rocker_desc *desc = &info->desc[i];
551 dma_unmap_single(&pdev->dev,
552 dma_unmap_addr(desc_info, mapaddr),
553 desc_info->data_size, direction);
554 kfree(desc_info->data);
558 static int rocker_dma_cmd_ring_wait_alloc(struct rocker_desc_info *desc_info)
560 struct rocker_wait *wait;
562 wait = rocker_wait_create();
565 rocker_desc_cookie_ptr_set(desc_info, wait);
570 rocker_dma_cmd_ring_wait_free(const struct rocker_desc_info *desc_info)
572 struct rocker_wait *wait = rocker_desc_cookie_ptr_get(desc_info);
574 rocker_wait_destroy(wait);
577 static int rocker_dma_cmd_ring_waits_alloc(const struct rocker *rocker)
579 const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring;
583 for (i = 0; i < cmd_ring->size; i++) {
584 err = rocker_dma_cmd_ring_wait_alloc(&cmd_ring->desc_info[i]);
591 for (i--; i >= 0; i--)
592 rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]);
596 static void rocker_dma_cmd_ring_waits_free(const struct rocker *rocker)
598 const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring;
601 for (i = 0; i < cmd_ring->size; i++)
602 rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]);
605 static int rocker_dma_rings_init(struct rocker *rocker)
607 const struct pci_dev *pdev = rocker->pdev;
610 err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
611 ROCKER_DMA_CMD_DEFAULT_SIZE,
614 dev_err(&pdev->dev, "failed to create command dma ring\n");
618 spin_lock_init(&rocker->cmd_ring_lock);
620 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
621 DMA_BIDIRECTIONAL, PAGE_SIZE);
623 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
624 goto err_dma_cmd_ring_bufs_alloc;
627 err = rocker_dma_cmd_ring_waits_alloc(rocker);
629 dev_err(&pdev->dev, "failed to alloc command dma ring waits\n");
630 goto err_dma_cmd_ring_waits_alloc;
633 err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
634 ROCKER_DMA_EVENT_DEFAULT_SIZE,
635 &rocker->event_ring);
637 dev_err(&pdev->dev, "failed to create event dma ring\n");
638 goto err_dma_event_ring_create;
641 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
642 DMA_FROM_DEVICE, PAGE_SIZE);
644 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
645 goto err_dma_event_ring_bufs_alloc;
647 rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
650 err_dma_event_ring_bufs_alloc:
651 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
652 err_dma_event_ring_create:
653 rocker_dma_cmd_ring_waits_free(rocker);
654 err_dma_cmd_ring_waits_alloc:
655 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
657 err_dma_cmd_ring_bufs_alloc:
658 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
662 static void rocker_dma_rings_fini(struct rocker *rocker)
664 rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
666 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
667 rocker_dma_cmd_ring_waits_free(rocker);
668 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
670 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
673 static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port,
674 struct rocker_desc_info *desc_info,
675 struct sk_buff *skb, size_t buf_len)
677 const struct rocker *rocker = rocker_port->rocker;
678 struct pci_dev *pdev = rocker->pdev;
679 dma_addr_t dma_handle;
681 dma_handle = dma_map_single(&pdev->dev, skb->data, buf_len,
683 if (dma_mapping_error(&pdev->dev, dma_handle))
685 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
686 goto tlv_put_failure;
687 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
688 goto tlv_put_failure;
692 dma_unmap_single(&pdev->dev, dma_handle, buf_len, DMA_FROM_DEVICE);
693 desc_info->tlv_size = 0;
697 static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port)
699 return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
702 static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port,
703 struct rocker_desc_info *desc_info)
705 struct net_device *dev = rocker_port->dev;
707 size_t buf_len = rocker_port_rx_buf_len(rocker_port);
710 /* Ensure that hw will see tlv_size zero in case of an error.
711 * That tells hw to use another descriptor.
713 rocker_desc_cookie_ptr_set(desc_info, NULL);
714 desc_info->tlv_size = 0;
716 skb = netdev_alloc_skb_ip_align(dev, buf_len);
719 err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len);
721 dev_kfree_skb_any(skb);
724 rocker_desc_cookie_ptr_set(desc_info, skb);
728 static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker,
729 const struct rocker_tlv **attrs)
731 struct pci_dev *pdev = rocker->pdev;
732 dma_addr_t dma_handle;
735 if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
736 !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
738 dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
739 len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
740 dma_unmap_single(&pdev->dev, dma_handle, len, DMA_FROM_DEVICE);
743 static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker,
744 const struct rocker_desc_info *desc_info)
746 const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
747 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
751 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
752 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
753 dev_kfree_skb_any(skb);
756 static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port)
758 const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
759 const struct rocker *rocker = rocker_port->rocker;
763 for (i = 0; i < rx_ring->size; i++) {
764 err = rocker_dma_rx_ring_skb_alloc(rocker_port,
765 &rx_ring->desc_info[i]);
772 for (i--; i >= 0; i--)
773 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
777 static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port)
779 const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
780 const struct rocker *rocker = rocker_port->rocker;
783 for (i = 0; i < rx_ring->size; i++)
784 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
787 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
789 struct rocker *rocker = rocker_port->rocker;
792 err = rocker_dma_ring_create(rocker,
793 ROCKER_DMA_TX(rocker_port->port_number),
794 ROCKER_DMA_TX_DEFAULT_SIZE,
795 &rocker_port->tx_ring);
797 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
801 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
803 ROCKER_DMA_TX_DESC_SIZE);
805 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
806 goto err_dma_tx_ring_bufs_alloc;
809 err = rocker_dma_ring_create(rocker,
810 ROCKER_DMA_RX(rocker_port->port_number),
811 ROCKER_DMA_RX_DEFAULT_SIZE,
812 &rocker_port->rx_ring);
814 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
815 goto err_dma_rx_ring_create;
818 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
820 ROCKER_DMA_RX_DESC_SIZE);
822 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
823 goto err_dma_rx_ring_bufs_alloc;
826 err = rocker_dma_rx_ring_skbs_alloc(rocker_port);
828 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
829 goto err_dma_rx_ring_skbs_alloc;
831 rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
835 err_dma_rx_ring_skbs_alloc:
836 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
838 err_dma_rx_ring_bufs_alloc:
839 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
840 err_dma_rx_ring_create:
841 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
843 err_dma_tx_ring_bufs_alloc:
844 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
848 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
850 struct rocker *rocker = rocker_port->rocker;
852 rocker_dma_rx_ring_skbs_free(rocker_port);
853 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
855 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
856 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
858 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
861 static void rocker_port_set_enable(const struct rocker_port *rocker_port,
864 u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
867 val |= 1ULL << rocker_port->pport;
869 val &= ~(1ULL << rocker_port->pport);
870 rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
873 /********************************
874 * Interrupt handler and helpers
875 ********************************/
877 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
879 struct rocker *rocker = dev_id;
880 const struct rocker_desc_info *desc_info;
881 struct rocker_wait *wait;
884 spin_lock(&rocker->cmd_ring_lock);
885 while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
886 wait = rocker_desc_cookie_ptr_get(desc_info);
888 rocker_desc_gen_clear(desc_info);
890 rocker_wait_wake_up(wait);
894 spin_unlock(&rocker->cmd_ring_lock);
895 rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
900 static void rocker_port_link_up(const struct rocker_port *rocker_port)
902 netif_carrier_on(rocker_port->dev);
903 netdev_info(rocker_port->dev, "Link is up\n");
906 static void rocker_port_link_down(const struct rocker_port *rocker_port)
908 netif_carrier_off(rocker_port->dev);
909 netdev_info(rocker_port->dev, "Link is down\n");
912 static int rocker_event_link_change(const struct rocker *rocker,
913 const struct rocker_tlv *info)
915 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
916 unsigned int port_number;
918 struct rocker_port *rocker_port;
920 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
921 if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
922 !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
925 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
926 link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
928 if (port_number >= rocker->port_count)
931 rocker_port = rocker->ports[port_number];
932 if (netif_carrier_ok(rocker_port->dev) != link_up) {
934 rocker_port_link_up(rocker_port);
936 rocker_port_link_down(rocker_port);
942 static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port,
943 const unsigned char *addr,
946 static int rocker_event_mac_vlan_seen(const struct rocker *rocker,
947 const struct rocker_tlv *info)
949 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
950 unsigned int port_number;
951 struct rocker_port *rocker_port;
952 const unsigned char *addr;
955 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
956 if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
957 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
958 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
961 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
962 addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
963 vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
965 if (port_number >= rocker->port_count)
968 rocker_port = rocker->ports[port_number];
969 return rocker_world_port_ev_mac_vlan_seen(rocker_port, addr, vlan_id);
972 static int rocker_event_process(const struct rocker *rocker,
973 const struct rocker_desc_info *desc_info)
975 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
976 const struct rocker_tlv *info;
979 rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
980 if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
981 !attrs[ROCKER_TLV_EVENT_INFO])
984 type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
985 info = attrs[ROCKER_TLV_EVENT_INFO];
988 case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
989 return rocker_event_link_change(rocker, info);
990 case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
991 return rocker_event_mac_vlan_seen(rocker, info);
997 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
999 struct rocker *rocker = dev_id;
1000 const struct pci_dev *pdev = rocker->pdev;
1001 const struct rocker_desc_info *desc_info;
1005 while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1006 err = rocker_desc_err(desc_info);
1008 dev_err(&pdev->dev, "event desc received with err %d\n",
1011 err = rocker_event_process(rocker, desc_info);
1013 dev_err(&pdev->dev, "event processing failed with err %d\n",
1016 rocker_desc_gen_clear(desc_info);
1017 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1020 rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1025 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1027 struct rocker_port *rocker_port = dev_id;
1029 napi_schedule(&rocker_port->napi_tx);
1033 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1035 struct rocker_port *rocker_port = dev_id;
1037 napi_schedule(&rocker_port->napi_rx);
1041 /********************
1043 ********************/
1045 int rocker_cmd_exec(struct rocker_port *rocker_port, bool nowait,
1046 rocker_cmd_prep_cb_t prepare, void *prepare_priv,
1047 rocker_cmd_proc_cb_t process, void *process_priv)
1049 struct rocker *rocker = rocker_port->rocker;
1050 struct rocker_desc_info *desc_info;
1051 struct rocker_wait *wait;
1052 unsigned long lock_flags;
1055 spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags);
1057 desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1059 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1063 wait = rocker_desc_cookie_ptr_get(desc_info);
1064 rocker_wait_init(wait);
1065 wait->nowait = nowait;
1067 err = prepare(rocker_port, desc_info, prepare_priv);
1069 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1073 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1075 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1080 if (!rocker_wait_event_timeout(wait, HZ / 10))
1083 err = rocker_desc_err(desc_info);
1088 err = process(rocker_port, desc_info, process_priv);
1090 rocker_desc_gen_clear(desc_info);
1095 rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port,
1096 struct rocker_desc_info *desc_info,
1099 struct rocker_tlv *cmd_info;
1101 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1102 ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1104 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1107 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1108 rocker_port->pport))
1110 rocker_tlv_nest_end(desc_info, cmd_info);
1115 rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port,
1116 const struct rocker_desc_info *desc_info,
1119 struct ethtool_link_ksettings *ecmd = priv;
1120 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1121 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1126 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1127 if (!attrs[ROCKER_TLV_CMD_INFO])
1130 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1131 attrs[ROCKER_TLV_CMD_INFO]);
1132 if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1133 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1134 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1137 speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1138 duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1139 autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1141 ethtool_link_ksettings_zero_link_mode(ecmd, supported);
1142 ethtool_link_ksettings_add_link_mode(ecmd, supported, TP);
1144 ecmd->base.phy_address = 0xff;
1145 ecmd->base.port = PORT_TP;
1146 ecmd->base.speed = speed;
1147 ecmd->base.duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1148 ecmd->base.autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1154 rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port,
1155 const struct rocker_desc_info *desc_info,
1158 unsigned char *macaddr = priv;
1159 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1160 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1161 const struct rocker_tlv *attr;
1163 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1164 if (!attrs[ROCKER_TLV_CMD_INFO])
1167 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1168 attrs[ROCKER_TLV_CMD_INFO]);
1169 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1173 if (rocker_tlv_len(attr) != ETH_ALEN)
1176 ether_addr_copy(macaddr, rocker_tlv_data(attr));
1181 rocker_cmd_get_port_settings_mode_proc(const struct rocker_port *rocker_port,
1182 const struct rocker_desc_info *desc_info,
1186 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1187 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1188 const struct rocker_tlv *attr;
1190 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1191 if (!attrs[ROCKER_TLV_CMD_INFO])
1194 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1195 attrs[ROCKER_TLV_CMD_INFO]);
1196 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE];
1200 *p_mode = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]);
1210 rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port,
1211 const struct rocker_desc_info *desc_info,
1214 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1215 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1216 struct port_name *name = priv;
1217 const struct rocker_tlv *attr;
1221 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1222 if (!attrs[ROCKER_TLV_CMD_INFO])
1225 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1226 attrs[ROCKER_TLV_CMD_INFO]);
1227 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1231 len = min_t(size_t, rocker_tlv_len(attr), name->len);
1232 str = rocker_tlv_data(attr);
1234 /* make sure name only contains alphanumeric characters */
1235 for (i = j = 0; i < len; ++i) {
1236 if (isalnum(str[i])) {
1237 name->buf[j] = str[i];
1245 name->buf[j] = '\0';
1251 rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port,
1252 struct rocker_desc_info *desc_info,
1255 struct ethtool_link_ksettings *ecmd = priv;
1256 struct rocker_tlv *cmd_info;
1258 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1259 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1261 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1264 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1265 rocker_port->pport))
1267 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1270 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1273 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1274 ecmd->base.autoneg))
1276 rocker_tlv_nest_end(desc_info, cmd_info);
1281 rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port,
1282 struct rocker_desc_info *desc_info,
1285 const unsigned char *macaddr = priv;
1286 struct rocker_tlv *cmd_info;
1288 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1289 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1291 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1294 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1295 rocker_port->pport))
1297 if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1300 rocker_tlv_nest_end(desc_info, cmd_info);
1305 rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port,
1306 struct rocker_desc_info *desc_info,
1309 int mtu = *(int *)priv;
1310 struct rocker_tlv *cmd_info;
1312 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1313 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1315 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1318 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1319 rocker_port->pport))
1321 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU,
1324 rocker_tlv_nest_end(desc_info, cmd_info);
1329 rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port,
1330 struct rocker_desc_info *desc_info,
1333 bool learning = *(bool *)priv;
1334 struct rocker_tlv *cmd_info;
1336 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1337 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1339 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1342 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1343 rocker_port->pport))
1345 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1348 rocker_tlv_nest_end(desc_info, cmd_info);
1353 rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1354 struct ethtool_link_ksettings *ecmd)
1356 return rocker_cmd_exec(rocker_port, false,
1357 rocker_cmd_get_port_settings_prep, NULL,
1358 rocker_cmd_get_port_settings_ethtool_proc,
1362 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1363 unsigned char *macaddr)
1365 return rocker_cmd_exec(rocker_port, false,
1366 rocker_cmd_get_port_settings_prep, NULL,
1367 rocker_cmd_get_port_settings_macaddr_proc,
1371 static int rocker_cmd_get_port_settings_mode(struct rocker_port *rocker_port,
1374 return rocker_cmd_exec(rocker_port, false,
1375 rocker_cmd_get_port_settings_prep, NULL,
1376 rocker_cmd_get_port_settings_mode_proc, p_mode);
1380 rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1381 const struct ethtool_link_ksettings *ecmd)
1383 struct ethtool_link_ksettings copy_ecmd;
1385 memcpy(©_ecmd, ecmd, sizeof(copy_ecmd));
1387 return rocker_cmd_exec(rocker_port, false,
1388 rocker_cmd_set_port_settings_ethtool_prep,
1389 ©_ecmd, NULL, NULL);
1392 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1393 unsigned char *macaddr)
1395 return rocker_cmd_exec(rocker_port, false,
1396 rocker_cmd_set_port_settings_macaddr_prep,
1397 macaddr, NULL, NULL);
1400 static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port,
1403 return rocker_cmd_exec(rocker_port, false,
1404 rocker_cmd_set_port_settings_mtu_prep,
1408 int rocker_port_set_learning(struct rocker_port *rocker_port,
1411 return rocker_cmd_exec(rocker_port, false,
1412 rocker_cmd_set_port_learning_prep,
1413 &learning, NULL, NULL);
1416 /**********************
1417 * Worlds manipulation
1418 **********************/
1420 static struct rocker_world_ops *rocker_world_ops[] = {
1424 #define ROCKER_WORLD_OPS_LEN ARRAY_SIZE(rocker_world_ops)
1426 static struct rocker_world_ops *rocker_world_ops_find(u8 mode)
1430 for (i = 0; i < ROCKER_WORLD_OPS_LEN; i++)
1431 if (rocker_world_ops[i]->mode == mode)
1432 return rocker_world_ops[i];
1436 static int rocker_world_init(struct rocker *rocker, u8 mode)
1438 struct rocker_world_ops *wops;
1441 wops = rocker_world_ops_find(mode);
1443 dev_err(&rocker->pdev->dev, "port mode \"%d\" is not supported\n",
1447 rocker->wops = wops;
1448 rocker->wpriv = kzalloc(wops->priv_size, GFP_KERNEL);
1453 err = wops->init(rocker);
1455 kfree(rocker->wpriv);
1459 static void rocker_world_fini(struct rocker *rocker)
1461 struct rocker_world_ops *wops = rocker->wops;
1463 if (!wops || !wops->fini)
1466 kfree(rocker->wpriv);
1469 static int rocker_world_check_init(struct rocker_port *rocker_port)
1471 struct rocker *rocker = rocker_port->rocker;
1475 err = rocker_cmd_get_port_settings_mode(rocker_port, &mode);
1477 dev_err(&rocker->pdev->dev, "failed to get port mode\n");
1481 if (rocker->wops->mode != mode) {
1482 dev_err(&rocker->pdev->dev, "hardware has ports in different worlds, which is not supported\n");
1487 return rocker_world_init(rocker, mode);
1490 static int rocker_world_port_pre_init(struct rocker_port *rocker_port)
1492 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1495 rocker_port->wpriv = kzalloc(wops->port_priv_size, GFP_KERNEL);
1496 if (!rocker_port->wpriv)
1498 if (!wops->port_pre_init)
1500 err = wops->port_pre_init(rocker_port);
1502 kfree(rocker_port->wpriv);
1506 static int rocker_world_port_init(struct rocker_port *rocker_port)
1508 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1510 if (!wops->port_init)
1512 return wops->port_init(rocker_port);
1515 static void rocker_world_port_fini(struct rocker_port *rocker_port)
1517 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1519 if (!wops->port_fini)
1521 wops->port_fini(rocker_port);
1524 static void rocker_world_port_post_fini(struct rocker_port *rocker_port)
1526 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1528 if (!wops->port_post_fini)
1530 wops->port_post_fini(rocker_port);
1531 kfree(rocker_port->wpriv);
1534 static int rocker_world_port_open(struct rocker_port *rocker_port)
1536 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1538 if (!wops->port_open)
1540 return wops->port_open(rocker_port);
1543 static void rocker_world_port_stop(struct rocker_port *rocker_port)
1545 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1547 if (!wops->port_stop)
1549 wops->port_stop(rocker_port);
1552 static int rocker_world_port_attr_stp_state_set(struct rocker_port *rocker_port,
1554 struct switchdev_trans *trans)
1556 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1558 if (!wops->port_attr_stp_state_set)
1561 if (switchdev_trans_ph_prepare(trans))
1564 return wops->port_attr_stp_state_set(rocker_port, state);
1568 rocker_world_port_attr_bridge_flags_support_get(const struct rocker_port *
1571 p_brport_flags_support)
1573 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1575 if (!wops->port_attr_bridge_flags_support_get)
1577 return wops->port_attr_bridge_flags_support_get(rocker_port,
1578 p_brport_flags_support);
1582 rocker_world_port_attr_pre_bridge_flags_set(struct rocker_port *rocker_port,
1583 unsigned long brport_flags,
1584 struct switchdev_trans *trans)
1586 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1587 unsigned long brport_flags_s;
1590 if (!wops->port_attr_bridge_flags_set)
1593 err = rocker_world_port_attr_bridge_flags_support_get(rocker_port,
1598 if (brport_flags & ~brport_flags_s)
1605 rocker_world_port_attr_bridge_flags_set(struct rocker_port *rocker_port,
1606 unsigned long brport_flags,
1607 struct switchdev_trans *trans)
1609 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1611 if (!wops->port_attr_bridge_flags_set)
1614 if (switchdev_trans_ph_prepare(trans))
1617 return wops->port_attr_bridge_flags_set(rocker_port, brport_flags,
1622 rocker_world_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port,
1624 struct switchdev_trans *trans)
1627 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1629 if (!wops->port_attr_bridge_ageing_time_set)
1632 if (switchdev_trans_ph_prepare(trans))
1635 return wops->port_attr_bridge_ageing_time_set(rocker_port, ageing_time,
1640 rocker_world_port_obj_vlan_add(struct rocker_port *rocker_port,
1641 const struct switchdev_obj_port_vlan *vlan,
1642 struct switchdev_trans *trans)
1644 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1646 if (!wops->port_obj_vlan_add)
1649 if (switchdev_trans_ph_prepare(trans))
1652 return wops->port_obj_vlan_add(rocker_port, vlan);
1656 rocker_world_port_obj_vlan_del(struct rocker_port *rocker_port,
1657 const struct switchdev_obj_port_vlan *vlan)
1659 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1661 if (netif_is_bridge_master(vlan->obj.orig_dev))
1664 if (!wops->port_obj_vlan_del)
1666 return wops->port_obj_vlan_del(rocker_port, vlan);
1670 rocker_world_port_fdb_add(struct rocker_port *rocker_port,
1671 struct switchdev_notifier_fdb_info *info)
1673 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1675 if (!wops->port_obj_fdb_add)
1678 return wops->port_obj_fdb_add(rocker_port, info->vid, info->addr);
1682 rocker_world_port_fdb_del(struct rocker_port *rocker_port,
1683 struct switchdev_notifier_fdb_info *info)
1685 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1687 if (!wops->port_obj_fdb_del)
1689 return wops->port_obj_fdb_del(rocker_port, info->vid, info->addr);
1692 static int rocker_world_port_master_linked(struct rocker_port *rocker_port,
1693 struct net_device *master)
1695 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1697 if (!wops->port_master_linked)
1699 return wops->port_master_linked(rocker_port, master);
1702 static int rocker_world_port_master_unlinked(struct rocker_port *rocker_port,
1703 struct net_device *master)
1705 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1707 if (!wops->port_master_unlinked)
1709 return wops->port_master_unlinked(rocker_port, master);
1712 static int rocker_world_port_neigh_update(struct rocker_port *rocker_port,
1713 struct neighbour *n)
1715 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1717 if (!wops->port_neigh_update)
1719 return wops->port_neigh_update(rocker_port, n);
1722 static int rocker_world_port_neigh_destroy(struct rocker_port *rocker_port,
1723 struct neighbour *n)
1725 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1727 if (!wops->port_neigh_destroy)
1729 return wops->port_neigh_destroy(rocker_port, n);
1732 static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port,
1733 const unsigned char *addr,
1736 struct rocker_world_ops *wops = rocker_port->rocker->wops;
1738 if (!wops->port_ev_mac_vlan_seen)
1740 return wops->port_ev_mac_vlan_seen(rocker_port, addr, vlan_id);
1743 static int rocker_world_fib4_add(struct rocker *rocker,
1744 const struct fib_entry_notifier_info *fen_info)
1746 struct rocker_world_ops *wops = rocker->wops;
1748 if (!wops->fib4_add)
1750 return wops->fib4_add(rocker, fen_info);
1753 static int rocker_world_fib4_del(struct rocker *rocker,
1754 const struct fib_entry_notifier_info *fen_info)
1756 struct rocker_world_ops *wops = rocker->wops;
1758 if (!wops->fib4_del)
1760 return wops->fib4_del(rocker, fen_info);
1763 static void rocker_world_fib4_abort(struct rocker *rocker)
1765 struct rocker_world_ops *wops = rocker->wops;
1767 if (wops->fib4_abort)
1768 wops->fib4_abort(rocker);
1775 static int rocker_port_open(struct net_device *dev)
1777 struct rocker_port *rocker_port = netdev_priv(dev);
1780 err = rocker_port_dma_rings_init(rocker_port);
1784 err = request_irq(rocker_msix_tx_vector(rocker_port),
1785 rocker_tx_irq_handler, 0,
1786 rocker_driver_name, rocker_port);
1788 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
1789 goto err_request_tx_irq;
1792 err = request_irq(rocker_msix_rx_vector(rocker_port),
1793 rocker_rx_irq_handler, 0,
1794 rocker_driver_name, rocker_port);
1796 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
1797 goto err_request_rx_irq;
1800 err = rocker_world_port_open(rocker_port);
1802 netdev_err(rocker_port->dev, "cannot open port in world\n");
1803 goto err_world_port_open;
1806 napi_enable(&rocker_port->napi_tx);
1807 napi_enable(&rocker_port->napi_rx);
1808 if (!dev->proto_down)
1809 rocker_port_set_enable(rocker_port, true);
1810 netif_start_queue(dev);
1813 err_world_port_open:
1814 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
1816 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
1818 rocker_port_dma_rings_fini(rocker_port);
1822 static int rocker_port_stop(struct net_device *dev)
1824 struct rocker_port *rocker_port = netdev_priv(dev);
1826 netif_stop_queue(dev);
1827 rocker_port_set_enable(rocker_port, false);
1828 napi_disable(&rocker_port->napi_rx);
1829 napi_disable(&rocker_port->napi_tx);
1830 rocker_world_port_stop(rocker_port);
1831 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
1832 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
1833 rocker_port_dma_rings_fini(rocker_port);
1838 static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port,
1839 const struct rocker_desc_info *desc_info)
1841 const struct rocker *rocker = rocker_port->rocker;
1842 struct pci_dev *pdev = rocker->pdev;
1843 const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
1844 struct rocker_tlv *attr;
1847 rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
1848 if (!attrs[ROCKER_TLV_TX_FRAGS])
1850 rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
1851 const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
1852 dma_addr_t dma_handle;
1855 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
1857 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
1859 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
1860 !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
1862 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
1863 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
1864 dma_unmap_single(&pdev->dev, dma_handle, len, DMA_TO_DEVICE);
1868 static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port,
1869 struct rocker_desc_info *desc_info,
1870 char *buf, size_t buf_len)
1872 const struct rocker *rocker = rocker_port->rocker;
1873 struct pci_dev *pdev = rocker->pdev;
1874 dma_addr_t dma_handle;
1875 struct rocker_tlv *frag;
1877 dma_handle = dma_map_single(&pdev->dev, buf, buf_len, DMA_TO_DEVICE);
1878 if (unlikely(dma_mapping_error(&pdev->dev, dma_handle))) {
1879 if (net_ratelimit())
1880 netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
1883 frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
1886 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
1889 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
1892 rocker_tlv_nest_end(desc_info, frag);
1896 rocker_tlv_nest_cancel(desc_info, frag);
1898 dma_unmap_single(&pdev->dev, dma_handle, buf_len, DMA_TO_DEVICE);
1902 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
1904 struct rocker_port *rocker_port = netdev_priv(dev);
1905 struct rocker *rocker = rocker_port->rocker;
1906 struct rocker_desc_info *desc_info;
1907 struct rocker_tlv *frags;
1911 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
1912 if (unlikely(!desc_info)) {
1913 if (net_ratelimit())
1914 netdev_err(dev, "tx ring full when queue awake\n");
1915 return NETDEV_TX_BUSY;
1918 rocker_desc_cookie_ptr_set(desc_info, skb);
1920 frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
1923 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
1924 skb->data, skb_headlen(skb));
1927 if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) {
1928 err = skb_linearize(skb);
1933 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1934 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1936 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
1937 skb_frag_address(frag),
1938 skb_frag_size(frag));
1942 rocker_tlv_nest_end(desc_info, frags);
1944 rocker_desc_gen_clear(desc_info);
1945 rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
1947 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
1949 netif_stop_queue(dev);
1951 return NETDEV_TX_OK;
1954 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
1956 rocker_tlv_nest_cancel(desc_info, frags);
1959 dev->stats.tx_dropped++;
1961 return NETDEV_TX_OK;
1964 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
1966 struct sockaddr *addr = p;
1967 struct rocker_port *rocker_port = netdev_priv(dev);
1970 if (!is_valid_ether_addr(addr->sa_data))
1971 return -EADDRNOTAVAIL;
1973 err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
1976 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1980 static int rocker_port_change_mtu(struct net_device *dev, int new_mtu)
1982 struct rocker_port *rocker_port = netdev_priv(dev);
1983 int running = netif_running(dev);
1987 rocker_port_stop(dev);
1989 netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu);
1992 err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu);
1997 err = rocker_port_open(dev);
2002 static int rocker_port_get_phys_port_name(struct net_device *dev,
2003 char *buf, size_t len)
2005 struct rocker_port *rocker_port = netdev_priv(dev);
2006 struct port_name name = { .buf = buf, .len = len };
2009 err = rocker_cmd_exec(rocker_port, false,
2010 rocker_cmd_get_port_settings_prep, NULL,
2011 rocker_cmd_get_port_settings_phys_name_proc,
2014 return err ? -EOPNOTSUPP : 0;
2017 static int rocker_port_change_proto_down(struct net_device *dev,
2020 struct rocker_port *rocker_port = netdev_priv(dev);
2022 if (rocker_port->dev->flags & IFF_UP)
2023 rocker_port_set_enable(rocker_port, !proto_down);
2024 rocker_port->dev->proto_down = proto_down;
2028 static void rocker_port_neigh_destroy(struct net_device *dev,
2029 struct neighbour *n)
2031 struct rocker_port *rocker_port = netdev_priv(n->dev);
2034 err = rocker_world_port_neigh_destroy(rocker_port, n);
2036 netdev_warn(rocker_port->dev, "failed to handle neigh destroy (err %d)\n",
2040 static int rocker_port_get_port_parent_id(struct net_device *dev,
2041 struct netdev_phys_item_id *ppid)
2043 const struct rocker_port *rocker_port = netdev_priv(dev);
2044 const struct rocker *rocker = rocker_port->rocker;
2046 ppid->id_len = sizeof(rocker->hw.id);
2047 memcpy(&ppid->id, &rocker->hw.id, ppid->id_len);
2052 static const struct net_device_ops rocker_port_netdev_ops = {
2053 .ndo_open = rocker_port_open,
2054 .ndo_stop = rocker_port_stop,
2055 .ndo_start_xmit = rocker_port_xmit,
2056 .ndo_set_mac_address = rocker_port_set_mac_address,
2057 .ndo_change_mtu = rocker_port_change_mtu,
2058 .ndo_get_phys_port_name = rocker_port_get_phys_port_name,
2059 .ndo_change_proto_down = rocker_port_change_proto_down,
2060 .ndo_neigh_destroy = rocker_port_neigh_destroy,
2061 .ndo_get_port_parent_id = rocker_port_get_port_parent_id,
2064 /********************
2066 ********************/
2068 static int rocker_port_attr_set(struct net_device *dev,
2069 const struct switchdev_attr *attr,
2070 struct switchdev_trans *trans)
2072 struct rocker_port *rocker_port = netdev_priv(dev);
2076 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
2077 err = rocker_world_port_attr_stp_state_set(rocker_port,
2081 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
2082 err = rocker_world_port_attr_pre_bridge_flags_set(rocker_port,
2083 attr->u.brport_flags,
2086 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
2087 err = rocker_world_port_attr_bridge_flags_set(rocker_port,
2088 attr->u.brport_flags,
2091 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
2092 err = rocker_world_port_attr_bridge_ageing_time_set(rocker_port,
2093 attr->u.ageing_time,
2104 static int rocker_port_obj_add(struct net_device *dev,
2105 const struct switchdev_obj *obj,
2106 struct switchdev_trans *trans)
2108 struct rocker_port *rocker_port = netdev_priv(dev);
2112 case SWITCHDEV_OBJ_ID_PORT_VLAN:
2113 err = rocker_world_port_obj_vlan_add(rocker_port,
2114 SWITCHDEV_OBJ_PORT_VLAN(obj),
2125 static int rocker_port_obj_del(struct net_device *dev,
2126 const struct switchdev_obj *obj)
2128 struct rocker_port *rocker_port = netdev_priv(dev);
2132 case SWITCHDEV_OBJ_ID_PORT_VLAN:
2133 err = rocker_world_port_obj_vlan_del(rocker_port,
2134 SWITCHDEV_OBJ_PORT_VLAN(obj));
2144 struct rocker_fib_event_work {
2145 struct work_struct work;
2147 struct fib_entry_notifier_info fen_info;
2148 struct fib_rule_notifier_info fr_info;
2150 struct rocker *rocker;
2151 unsigned long event;
2154 static void rocker_router_fib_event_work(struct work_struct *work)
2156 struct rocker_fib_event_work *fib_work =
2157 container_of(work, struct rocker_fib_event_work, work);
2158 struct rocker *rocker = fib_work->rocker;
2159 struct fib_rule *rule;
2162 /* Protect internal structures from changes */
2164 switch (fib_work->event) {
2165 case FIB_EVENT_ENTRY_REPLACE:
2166 err = rocker_world_fib4_add(rocker, &fib_work->fen_info);
2168 rocker_world_fib4_abort(rocker);
2169 fib_info_put(fib_work->fen_info.fi);
2171 case FIB_EVENT_ENTRY_DEL:
2172 rocker_world_fib4_del(rocker, &fib_work->fen_info);
2173 fib_info_put(fib_work->fen_info.fi);
2175 case FIB_EVENT_RULE_ADD:
2176 case FIB_EVENT_RULE_DEL:
2177 rule = fib_work->fr_info.rule;
2178 if (!fib4_rule_default(rule))
2179 rocker_world_fib4_abort(rocker);
2187 /* Called with rcu_read_lock() */
2188 static int rocker_router_fib_event(struct notifier_block *nb,
2189 unsigned long event, void *ptr)
2191 struct rocker *rocker = container_of(nb, struct rocker, fib_nb);
2192 struct rocker_fib_event_work *fib_work;
2193 struct fib_notifier_info *info = ptr;
2195 if (info->family != AF_INET)
2198 fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC);
2199 if (WARN_ON(!fib_work))
2202 INIT_WORK(&fib_work->work, rocker_router_fib_event_work);
2203 fib_work->rocker = rocker;
2204 fib_work->event = event;
2207 case FIB_EVENT_ENTRY_REPLACE:
2208 case FIB_EVENT_ENTRY_DEL:
2209 if (info->family == AF_INET) {
2210 struct fib_entry_notifier_info *fen_info = ptr;
2212 if (fen_info->fi->fib_nh_is_v6) {
2213 NL_SET_ERR_MSG_MOD(info->extack, "IPv6 gateway with IPv4 route is not supported");
2215 return notifier_from_errno(-EINVAL);
2217 if (fen_info->fi->nh) {
2218 NL_SET_ERR_MSG_MOD(info->extack, "IPv4 route with nexthop objects is not supported");
2220 return notifier_from_errno(-EINVAL);
2224 memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info));
2225 /* Take referece on fib_info to prevent it from being
2226 * freed while work is queued. Release it afterwards.
2228 fib_info_hold(fib_work->fen_info.fi);
2230 case FIB_EVENT_RULE_ADD:
2231 case FIB_EVENT_RULE_DEL:
2232 memcpy(&fib_work->fr_info, ptr, sizeof(fib_work->fr_info));
2233 fib_rule_get(fib_work->fr_info.rule);
2237 queue_work(rocker->rocker_owq, &fib_work->work);
2242 /********************
2244 ********************/
2247 rocker_port_get_link_ksettings(struct net_device *dev,
2248 struct ethtool_link_ksettings *ecmd)
2250 struct rocker_port *rocker_port = netdev_priv(dev);
2252 return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
2256 rocker_port_set_link_ksettings(struct net_device *dev,
2257 const struct ethtool_link_ksettings *ecmd)
2259 struct rocker_port *rocker_port = netdev_priv(dev);
2261 return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
2264 static void rocker_port_get_drvinfo(struct net_device *dev,
2265 struct ethtool_drvinfo *drvinfo)
2267 strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
2268 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
2271 static struct rocker_port_stats {
2272 char str[ETH_GSTRING_LEN];
2274 } rocker_port_stats[] = {
2275 { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, },
2276 { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, },
2277 { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
2278 { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, },
2280 { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, },
2281 { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, },
2282 { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
2283 { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, },
2286 #define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats)
2288 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
2294 switch (stringset) {
2296 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
2297 memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
2298 p += ETH_GSTRING_LEN;
2305 rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port,
2306 struct rocker_desc_info *desc_info,
2309 struct rocker_tlv *cmd_stats;
2311 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
2312 ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
2315 cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2319 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
2320 rocker_port->pport))
2323 rocker_tlv_nest_end(desc_info, cmd_stats);
2329 rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port,
2330 const struct rocker_desc_info *desc_info,
2333 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
2334 const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
2335 const struct rocker_tlv *pattr;
2340 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
2342 if (!attrs[ROCKER_TLV_CMD_INFO])
2345 rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
2346 attrs[ROCKER_TLV_CMD_INFO]);
2348 if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
2351 pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
2352 if (pport != rocker_port->pport)
2355 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
2356 pattr = stats_attrs[rocker_port_stats[i].type];
2360 data[i] = rocker_tlv_get_u64(pattr);
2366 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
2369 return rocker_cmd_exec(rocker_port, false,
2370 rocker_cmd_get_port_stats_prep, NULL,
2371 rocker_cmd_get_port_stats_ethtool_proc,
2375 static void rocker_port_get_stats(struct net_device *dev,
2376 struct ethtool_stats *stats, u64 *data)
2378 struct rocker_port *rocker_port = netdev_priv(dev);
2380 if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
2383 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
2388 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
2392 return ROCKER_PORT_STATS_LEN;
2398 static const struct ethtool_ops rocker_port_ethtool_ops = {
2399 .get_drvinfo = rocker_port_get_drvinfo,
2400 .get_link = ethtool_op_get_link,
2401 .get_strings = rocker_port_get_strings,
2402 .get_ethtool_stats = rocker_port_get_stats,
2403 .get_sset_count = rocker_port_get_sset_count,
2404 .get_link_ksettings = rocker_port_get_link_ksettings,
2405 .set_link_ksettings = rocker_port_set_link_ksettings,
2412 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
2414 return container_of(napi, struct rocker_port, napi_tx);
2417 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
2419 struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
2420 const struct rocker *rocker = rocker_port->rocker;
2421 const struct rocker_desc_info *desc_info;
2425 /* Cleanup tx descriptors */
2426 while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
2427 struct sk_buff *skb;
2429 err = rocker_desc_err(desc_info);
2430 if (err && net_ratelimit())
2431 netdev_err(rocker_port->dev, "tx desc received with err %d\n",
2433 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
2435 skb = rocker_desc_cookie_ptr_get(desc_info);
2437 rocker_port->dev->stats.tx_packets++;
2438 rocker_port->dev->stats.tx_bytes += skb->len;
2440 rocker_port->dev->stats.tx_errors++;
2443 dev_kfree_skb_any(skb);
2447 if (credits && netif_queue_stopped(rocker_port->dev))
2448 netif_wake_queue(rocker_port->dev);
2450 napi_complete(napi);
2451 rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
2456 static int rocker_port_rx_proc(const struct rocker *rocker,
2457 const struct rocker_port *rocker_port,
2458 struct rocker_desc_info *desc_info)
2460 const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
2461 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
2468 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
2469 if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
2471 if (attrs[ROCKER_TLV_RX_FLAGS])
2472 rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]);
2474 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
2476 rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
2477 skb_put(skb, rx_len);
2478 skb->protocol = eth_type_trans(skb, rocker_port->dev);
2480 if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD)
2481 skb->offload_fwd_mark = 1;
2483 rocker_port->dev->stats.rx_packets++;
2484 rocker_port->dev->stats.rx_bytes += skb->len;
2486 netif_receive_skb(skb);
2488 return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info);
2491 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
2493 return container_of(napi, struct rocker_port, napi_rx);
2496 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
2498 struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
2499 const struct rocker *rocker = rocker_port->rocker;
2500 struct rocker_desc_info *desc_info;
2504 /* Process rx descriptors */
2505 while (credits < budget &&
2506 (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
2507 err = rocker_desc_err(desc_info);
2509 if (net_ratelimit())
2510 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
2513 err = rocker_port_rx_proc(rocker, rocker_port,
2515 if (err && net_ratelimit())
2516 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
2520 rocker_port->dev->stats.rx_errors++;
2522 rocker_desc_gen_clear(desc_info);
2523 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
2527 if (credits < budget)
2528 napi_complete_done(napi, credits);
2530 rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
2539 static void rocker_carrier_init(const struct rocker_port *rocker_port)
2541 const struct rocker *rocker = rocker_port->rocker;
2542 u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
2545 link_up = link_status & (1 << rocker_port->pport);
2547 netif_carrier_on(rocker_port->dev);
2549 netif_carrier_off(rocker_port->dev);
2552 static void rocker_remove_ports(struct rocker *rocker)
2554 struct rocker_port *rocker_port;
2557 for (i = 0; i < rocker->port_count; i++) {
2558 rocker_port = rocker->ports[i];
2561 rocker_world_port_fini(rocker_port);
2562 unregister_netdev(rocker_port->dev);
2563 rocker_world_port_post_fini(rocker_port);
2564 free_netdev(rocker_port->dev);
2566 rocker_world_fini(rocker);
2567 kfree(rocker->ports);
2570 static void rocker_port_dev_addr_init(struct rocker_port *rocker_port)
2572 const struct rocker *rocker = rocker_port->rocker;
2573 const struct pci_dev *pdev = rocker->pdev;
2576 err = rocker_cmd_get_port_settings_macaddr(rocker_port,
2577 rocker_port->dev->dev_addr);
2579 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
2580 eth_hw_addr_random(rocker_port->dev);
2584 #define ROCKER_PORT_MIN_MTU ETH_MIN_MTU
2585 #define ROCKER_PORT_MAX_MTU 9000
2586 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
2588 struct pci_dev *pdev = rocker->pdev;
2589 struct rocker_port *rocker_port;
2590 struct net_device *dev;
2593 dev = alloc_etherdev(sizeof(struct rocker_port));
2596 SET_NETDEV_DEV(dev, &pdev->dev);
2597 rocker_port = netdev_priv(dev);
2598 rocker_port->dev = dev;
2599 rocker_port->rocker = rocker;
2600 rocker_port->port_number = port_number;
2601 rocker_port->pport = port_number + 1;
2603 err = rocker_world_check_init(rocker_port);
2605 dev_err(&pdev->dev, "world init failed\n");
2606 goto err_world_check_init;
2609 rocker_port_dev_addr_init(rocker_port);
2610 dev->netdev_ops = &rocker_port_netdev_ops;
2611 dev->ethtool_ops = &rocker_port_ethtool_ops;
2612 netif_tx_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
2614 netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
2616 rocker_carrier_init(rocker_port);
2618 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG;
2620 /* MTU range: 68 - 9000 */
2621 dev->min_mtu = ROCKER_PORT_MIN_MTU;
2622 dev->max_mtu = ROCKER_PORT_MAX_MTU;
2624 err = rocker_world_port_pre_init(rocker_port);
2626 dev_err(&pdev->dev, "port world pre-init failed\n");
2627 goto err_world_port_pre_init;
2629 err = register_netdev(dev);
2631 dev_err(&pdev->dev, "register_netdev failed\n");
2632 goto err_register_netdev;
2634 rocker->ports[port_number] = rocker_port;
2636 err = rocker_world_port_init(rocker_port);
2638 dev_err(&pdev->dev, "port world init failed\n");
2639 goto err_world_port_init;
2644 err_world_port_init:
2645 rocker->ports[port_number] = NULL;
2646 unregister_netdev(dev);
2647 err_register_netdev:
2648 rocker_world_port_post_fini(rocker_port);
2649 err_world_port_pre_init:
2650 err_world_check_init:
2655 static int rocker_probe_ports(struct rocker *rocker)
2661 alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
2662 rocker->ports = kzalloc(alloc_size, GFP_KERNEL);
2665 for (i = 0; i < rocker->port_count; i++) {
2666 err = rocker_probe_port(rocker, i);
2673 rocker_remove_ports(rocker);
2677 static int rocker_msix_init(struct rocker *rocker)
2679 struct pci_dev *pdev = rocker->pdev;
2684 msix_entries = pci_msix_vec_count(pdev);
2685 if (msix_entries < 0)
2686 return msix_entries;
2688 if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
2691 rocker->msix_entries = kmalloc_array(msix_entries,
2692 sizeof(struct msix_entry),
2694 if (!rocker->msix_entries)
2697 for (i = 0; i < msix_entries; i++)
2698 rocker->msix_entries[i].entry = i;
2700 err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
2702 goto err_enable_msix;
2707 kfree(rocker->msix_entries);
2711 static void rocker_msix_fini(const struct rocker *rocker)
2713 pci_disable_msix(rocker->pdev);
2714 kfree(rocker->msix_entries);
2717 static bool rocker_port_dev_check(const struct net_device *dev)
2719 return dev->netdev_ops == &rocker_port_netdev_ops;
2723 rocker_switchdev_port_attr_set_event(struct net_device *netdev,
2724 struct switchdev_notifier_port_attr_info *port_attr_info)
2728 err = rocker_port_attr_set(netdev, port_attr_info->attr,
2729 port_attr_info->trans);
2731 port_attr_info->handled = true;
2732 return notifier_from_errno(err);
2735 struct rocker_switchdev_event_work {
2736 struct work_struct work;
2737 struct switchdev_notifier_fdb_info fdb_info;
2738 struct rocker_port *rocker_port;
2739 unsigned long event;
2743 rocker_fdb_offload_notify(struct rocker_port *rocker_port,
2744 struct switchdev_notifier_fdb_info *recv_info)
2746 struct switchdev_notifier_fdb_info info;
2748 info.addr = recv_info->addr;
2749 info.vid = recv_info->vid;
2750 info.offloaded = true;
2751 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED,
2752 rocker_port->dev, &info.info, NULL);
2755 static void rocker_switchdev_event_work(struct work_struct *work)
2757 struct rocker_switchdev_event_work *switchdev_work =
2758 container_of(work, struct rocker_switchdev_event_work, work);
2759 struct rocker_port *rocker_port = switchdev_work->rocker_port;
2760 struct switchdev_notifier_fdb_info *fdb_info;
2764 switch (switchdev_work->event) {
2765 case SWITCHDEV_FDB_ADD_TO_DEVICE:
2766 fdb_info = &switchdev_work->fdb_info;
2767 if (!fdb_info->added_by_user)
2769 err = rocker_world_port_fdb_add(rocker_port, fdb_info);
2771 netdev_dbg(rocker_port->dev, "fdb add failed err=%d\n", err);
2774 rocker_fdb_offload_notify(rocker_port, fdb_info);
2776 case SWITCHDEV_FDB_DEL_TO_DEVICE:
2777 fdb_info = &switchdev_work->fdb_info;
2778 if (!fdb_info->added_by_user)
2780 err = rocker_world_port_fdb_del(rocker_port, fdb_info);
2782 netdev_dbg(rocker_port->dev, "fdb add failed err=%d\n", err);
2787 kfree(switchdev_work->fdb_info.addr);
2788 kfree(switchdev_work);
2789 dev_put(rocker_port->dev);
2792 /* called under rcu_read_lock() */
2793 static int rocker_switchdev_event(struct notifier_block *unused,
2794 unsigned long event, void *ptr)
2796 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
2797 struct rocker_switchdev_event_work *switchdev_work;
2798 struct switchdev_notifier_fdb_info *fdb_info = ptr;
2799 struct rocker_port *rocker_port;
2801 if (!rocker_port_dev_check(dev))
2804 if (event == SWITCHDEV_PORT_ATTR_SET)
2805 return rocker_switchdev_port_attr_set_event(dev, ptr);
2807 rocker_port = netdev_priv(dev);
2808 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
2809 if (WARN_ON(!switchdev_work))
2812 INIT_WORK(&switchdev_work->work, rocker_switchdev_event_work);
2813 switchdev_work->rocker_port = rocker_port;
2814 switchdev_work->event = event;
2817 case SWITCHDEV_FDB_ADD_TO_DEVICE:
2818 case SWITCHDEV_FDB_DEL_TO_DEVICE:
2819 memcpy(&switchdev_work->fdb_info, ptr,
2820 sizeof(switchdev_work->fdb_info));
2821 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
2822 if (unlikely(!switchdev_work->fdb_info.addr)) {
2823 kfree(switchdev_work);
2827 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
2829 /* Take a reference on the rocker device */
2833 kfree(switchdev_work);
2837 queue_work(rocker_port->rocker->rocker_owq,
2838 &switchdev_work->work);
2843 rocker_switchdev_port_obj_event(unsigned long event, struct net_device *netdev,
2844 struct switchdev_notifier_port_obj_info *port_obj_info)
2846 int err = -EOPNOTSUPP;
2849 case SWITCHDEV_PORT_OBJ_ADD:
2850 err = rocker_port_obj_add(netdev, port_obj_info->obj,
2851 port_obj_info->trans);
2853 case SWITCHDEV_PORT_OBJ_DEL:
2854 err = rocker_port_obj_del(netdev, port_obj_info->obj);
2858 port_obj_info->handled = true;
2859 return notifier_from_errno(err);
2862 static int rocker_switchdev_blocking_event(struct notifier_block *unused,
2863 unsigned long event, void *ptr)
2865 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
2867 if (!rocker_port_dev_check(dev))
2871 case SWITCHDEV_PORT_OBJ_ADD:
2872 case SWITCHDEV_PORT_OBJ_DEL:
2873 return rocker_switchdev_port_obj_event(event, dev, ptr);
2874 case SWITCHDEV_PORT_ATTR_SET:
2875 return rocker_switchdev_port_attr_set_event(dev, ptr);
2881 static struct notifier_block rocker_switchdev_notifier = {
2882 .notifier_call = rocker_switchdev_event,
2885 static struct notifier_block rocker_switchdev_blocking_notifier = {
2886 .notifier_call = rocker_switchdev_blocking_event,
2889 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2891 struct notifier_block *nb;
2892 struct rocker *rocker;
2895 rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
2899 err = pci_enable_device(pdev);
2901 dev_err(&pdev->dev, "pci_enable_device failed\n");
2902 goto err_pci_enable_device;
2905 err = pci_request_regions(pdev, rocker_driver_name);
2907 dev_err(&pdev->dev, "pci_request_regions failed\n");
2908 goto err_pci_request_regions;
2911 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
2913 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
2915 dev_err(&pdev->dev, "dma_set_coherent_mask failed\n");
2916 goto err_pci_set_dma_mask;
2919 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
2921 dev_err(&pdev->dev, "dma_set_mask failed\n");
2922 goto err_pci_set_dma_mask;
2926 if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
2927 dev_err(&pdev->dev, "invalid PCI region size\n");
2929 goto err_pci_resource_len_check;
2932 rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
2933 pci_resource_len(pdev, 0));
2934 if (!rocker->hw_addr) {
2935 dev_err(&pdev->dev, "ioremap failed\n");
2939 pci_set_master(pdev);
2941 rocker->pdev = pdev;
2942 pci_set_drvdata(pdev, rocker);
2944 rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
2946 err = rocker_msix_init(rocker);
2948 dev_err(&pdev->dev, "MSI-X init failed\n");
2952 err = rocker_basic_hw_test(rocker);
2954 dev_err(&pdev->dev, "basic hw test failed\n");
2955 goto err_basic_hw_test;
2958 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
2960 err = rocker_dma_rings_init(rocker);
2962 goto err_dma_rings_init;
2964 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
2965 rocker_cmd_irq_handler, 0,
2966 rocker_driver_name, rocker);
2968 dev_err(&pdev->dev, "cannot assign cmd irq\n");
2969 goto err_request_cmd_irq;
2972 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
2973 rocker_event_irq_handler, 0,
2974 rocker_driver_name, rocker);
2976 dev_err(&pdev->dev, "cannot assign event irq\n");
2977 goto err_request_event_irq;
2980 rocker->rocker_owq = alloc_ordered_workqueue(rocker_driver_name,
2982 if (!rocker->rocker_owq) {
2984 goto err_alloc_ordered_workqueue;
2987 err = rocker_probe_ports(rocker);
2989 dev_err(&pdev->dev, "failed to probe ports\n");
2990 goto err_probe_ports;
2993 /* Only FIBs pointing to our own netdevs are programmed into
2994 * the device, so no need to pass a callback.
2996 rocker->fib_nb.notifier_call = rocker_router_fib_event;
2997 err = register_fib_notifier(&init_net, &rocker->fib_nb, NULL, NULL);
2999 goto err_register_fib_notifier;
3001 err = register_switchdev_notifier(&rocker_switchdev_notifier);
3003 dev_err(&pdev->dev, "Failed to register switchdev notifier\n");
3004 goto err_register_switchdev_notifier;
3007 nb = &rocker_switchdev_blocking_notifier;
3008 err = register_switchdev_blocking_notifier(nb);
3010 dev_err(&pdev->dev, "Failed to register switchdev blocking notifier\n");
3011 goto err_register_switchdev_blocking_notifier;
3014 rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
3016 dev_info(&pdev->dev, "Rocker switch with id %*phN\n",
3017 (int)sizeof(rocker->hw.id), &rocker->hw.id);
3021 err_register_switchdev_blocking_notifier:
3022 unregister_switchdev_notifier(&rocker_switchdev_notifier);
3023 err_register_switchdev_notifier:
3024 unregister_fib_notifier(&init_net, &rocker->fib_nb);
3025 err_register_fib_notifier:
3026 rocker_remove_ports(rocker);
3028 destroy_workqueue(rocker->rocker_owq);
3029 err_alloc_ordered_workqueue:
3030 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
3031 err_request_event_irq:
3032 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
3033 err_request_cmd_irq:
3034 rocker_dma_rings_fini(rocker);
3037 rocker_msix_fini(rocker);
3039 iounmap(rocker->hw_addr);
3041 err_pci_resource_len_check:
3042 err_pci_set_dma_mask:
3043 pci_release_regions(pdev);
3044 err_pci_request_regions:
3045 pci_disable_device(pdev);
3046 err_pci_enable_device:
3051 static void rocker_remove(struct pci_dev *pdev)
3053 struct rocker *rocker = pci_get_drvdata(pdev);
3054 struct notifier_block *nb;
3056 nb = &rocker_switchdev_blocking_notifier;
3057 unregister_switchdev_blocking_notifier(nb);
3059 unregister_switchdev_notifier(&rocker_switchdev_notifier);
3060 unregister_fib_notifier(&init_net, &rocker->fib_nb);
3061 rocker_remove_ports(rocker);
3062 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
3063 destroy_workqueue(rocker->rocker_owq);
3064 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
3065 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
3066 rocker_dma_rings_fini(rocker);
3067 rocker_msix_fini(rocker);
3068 iounmap(rocker->hw_addr);
3069 pci_release_regions(rocker->pdev);
3070 pci_disable_device(rocker->pdev);
3074 static struct pci_driver rocker_pci_driver = {
3075 .name = rocker_driver_name,
3076 .id_table = rocker_pci_id_table,
3077 .probe = rocker_probe,
3078 .remove = rocker_remove,
3081 /************************************
3082 * Net device notifier event handler
3083 ************************************/
3085 static bool rocker_port_dev_check_under(const struct net_device *dev,
3086 struct rocker *rocker)
3088 struct rocker_port *rocker_port;
3090 if (!rocker_port_dev_check(dev))
3093 rocker_port = netdev_priv(dev);
3094 if (rocker_port->rocker != rocker)
3100 struct rocker_walk_data {
3101 struct rocker *rocker;
3102 struct rocker_port *port;
3105 static int rocker_lower_dev_walk(struct net_device *lower_dev,
3106 struct netdev_nested_priv *priv)
3108 struct rocker_walk_data *data = (struct rocker_walk_data *)priv->data;
3111 if (rocker_port_dev_check_under(lower_dev, data->rocker)) {
3112 data->port = netdev_priv(lower_dev);
3119 struct rocker_port *rocker_port_dev_lower_find(struct net_device *dev,
3120 struct rocker *rocker)
3122 struct netdev_nested_priv priv;
3123 struct rocker_walk_data data;
3125 if (rocker_port_dev_check_under(dev, rocker))
3126 return netdev_priv(dev);
3128 data.rocker = rocker;
3130 priv.data = (void *)&data;
3131 netdev_walk_all_lower_dev(dev, rocker_lower_dev_walk, &priv);
3136 static int rocker_netdevice_event(struct notifier_block *unused,
3137 unsigned long event, void *ptr)
3139 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3140 struct netdev_notifier_changeupper_info *info;
3141 struct rocker_port *rocker_port;
3144 if (!rocker_port_dev_check(dev))
3148 case NETDEV_CHANGEUPPER:
3152 rocker_port = netdev_priv(dev);
3153 if (info->linking) {
3154 err = rocker_world_port_master_linked(rocker_port,
3157 netdev_warn(dev, "failed to reflect master linked (err %d)\n",
3160 err = rocker_world_port_master_unlinked(rocker_port,
3163 netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
3171 static struct notifier_block rocker_netdevice_nb __read_mostly = {
3172 .notifier_call = rocker_netdevice_event,
3175 /************************************
3176 * Net event notifier event handler
3177 ************************************/
3179 static int rocker_netevent_event(struct notifier_block *unused,
3180 unsigned long event, void *ptr)
3182 struct rocker_port *rocker_port;
3183 struct net_device *dev;
3184 struct neighbour *n = ptr;
3188 case NETEVENT_NEIGH_UPDATE:
3189 if (n->tbl != &arp_tbl)
3192 if (!rocker_port_dev_check(dev))
3194 rocker_port = netdev_priv(dev);
3195 err = rocker_world_port_neigh_update(rocker_port, n);
3197 netdev_warn(dev, "failed to handle neigh update (err %d)\n",
3205 static struct notifier_block rocker_netevent_nb __read_mostly = {
3206 .notifier_call = rocker_netevent_event,
3209 /***********************
3210 * Module init and exit
3211 ***********************/
3213 static int __init rocker_module_init(void)
3217 register_netdevice_notifier(&rocker_netdevice_nb);
3218 register_netevent_notifier(&rocker_netevent_nb);
3219 err = pci_register_driver(&rocker_pci_driver);
3221 goto err_pci_register_driver;
3224 err_pci_register_driver:
3225 unregister_netevent_notifier(&rocker_netevent_nb);
3226 unregister_netdevice_notifier(&rocker_netdevice_nb);
3230 static void __exit rocker_module_exit(void)
3232 unregister_netevent_notifier(&rocker_netevent_nb);
3233 unregister_netdevice_notifier(&rocker_netdevice_nb);
3234 pci_unregister_driver(&rocker_pci_driver);
3237 module_init(rocker_module_init);
3238 module_exit(rocker_module_exit);
3240 MODULE_LICENSE("GPL v2");
3241 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
3242 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
3243 MODULE_DESCRIPTION("Rocker switch device driver");
3244 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);