| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jiri Pirko | 9825 | 67.36% | 26 | 20.31% |
| Scott Feldman | 2473 | 16.95% | 30 | 23.44% |
| Arkadi Sharshevsky | 614 | 4.21% | 3 | 2.34% |
| David Ahern | 364 | 2.50% | 6 | 4.69% |
| Ido Schimmel | 364 | 2.50% | 12 | 9.38% |
| Florian Fainelli | 242 | 1.66% | 4 | 3.12% |
| Petr Machata | 197 | 1.35% | 5 | 3.91% |
| Christophe Jaillet | 91 | 0.62% | 2 | 1.56% |
| Simon Horman | 78 | 0.53% | 6 | 4.69% |
| Sridhar Samudrala | 77 | 0.53% | 1 | 0.78% |
| Philippe Reynes | 71 | 0.49% | 1 | 0.78% |
| Vladimir Oltean | 36 | 0.25% | 4 | 3.12% |
| Taehee Yoo | 27 | 0.19% | 1 | 0.78% |
| Kangjie Lu | 22 | 0.15% | 1 | 0.78% |
| Jakub Kiciński | 22 | 0.15% | 3 | 2.34% |
| Jarod Wilson | 14 | 0.10% | 1 | 0.78% |
| Colin Ian King | 10 | 0.07% | 1 | 0.78% |
| Linus Torvalds (pre-git) | 7 | 0.05% | 3 | 2.34% |
| Vivien Didelot | 7 | 0.05% | 2 | 1.56% |
| Eric Dumazet | 7 | 0.05% | 2 | 1.56% |
| Aditya Pakki | 7 | 0.05% | 1 | 0.78% |
| Wei Yongjun | 5 | 0.03% | 2 | 1.56% |
| Anuradha Karuppiah | 5 | 0.03% | 1 | 0.78% |
| Andrew Lunn | 5 | 0.03% | 1 | 0.78% |
| Jason A. Donenfeld | 4 | 0.03% | 2 | 1.56% |
| Dan Carpenter | 3 | 0.02% | 1 | 0.78% |
| Ying Xue | 3 | 0.02% | 1 | 0.78% |
| Thomas Gleixner | 2 | 0.01% | 1 | 0.78% |
| Christoph Hellwig | 1 | 0.01% | 1 | 0.78% |
| Wolfram Sang | 1 | 0.01% | 1 | 0.78% |
| Thomas Graf | 1 | 0.01% | 1 | 0.78% |
| Gilad Ben-Yossef | 1 | 0.01% | 1 | 0.78% |
| Total | 14586 | 128 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com> * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/interrupt.h> #include <linux/sched.h> #include <linux/wait.h> #include <linux/spinlock.h> #include <linux/sort.h> #include <linux/random.h> #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/socket.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/if_ether.h> #include <linux/if_vlan.h> #include <linux/if_bridge.h> #include <linux/bitops.h> #include <linux/ctype.h> #include <linux/workqueue.h> #include <net/switchdev.h> #include <net/rtnetlink.h> #include <net/netevent.h> #include <net/arp.h> #include <net/fib_rules.h> #include <net/fib_notifier.h> #include <linux/io-64-nonatomic-lo-hi.h> #include "rocker_hw.h" #include "rocker.h" #include "rocker_tlv.h" static const char rocker_driver_name[] = "rocker"; static const struct pci_device_id rocker_pci_id_table[] = { {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0}, {0, } }; struct rocker_wait { wait_queue_head_t wait; bool done; bool nowait; }; static void rocker_wait_reset(struct rocker_wait *wait) { wait->done = false; wait->nowait = false; } static void rocker_wait_init(struct rocker_wait *wait) { init_waitqueue_head(&wait->wait); rocker_wait_reset(wait); } static struct rocker_wait *rocker_wait_create(void) { struct rocker_wait *wait; wait = kzalloc(sizeof(*wait), GFP_KERNEL); if (!wait) return NULL; return wait; } static void rocker_wait_destroy(struct rocker_wait *wait) { kfree(wait); } static bool rocker_wait_event_timeout(struct rocker_wait *wait, unsigned long timeout) { wait_event_timeout(wait->wait, wait->done, HZ / 10); if (!wait->done) return false; return true; } static void rocker_wait_wake_up(struct rocker_wait *wait) { wait->done = true; wake_up(&wait->wait); } static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector) { return rocker->msix_entries[vector].vector; } static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port) { return rocker_msix_vector(rocker_port->rocker, ROCKER_MSIX_VEC_TX(rocker_port->port_number)); } static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port) { return rocker_msix_vector(rocker_port->rocker, ROCKER_MSIX_VEC_RX(rocker_port->port_number)); } #define rocker_write32(rocker, reg, val) \ writel((val), (rocker)->hw_addr + (ROCKER_ ## reg)) #define rocker_read32(rocker, reg) \ readl((rocker)->hw_addr + (ROCKER_ ## reg)) #define rocker_write64(rocker, reg, val) \ writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg)) #define rocker_read64(rocker, reg) \ readq((rocker)->hw_addr + (ROCKER_ ## reg)) /***************************** * HW basic testing functions *****************************/ static int rocker_reg_test(const struct rocker *rocker) { const struct pci_dev *pdev = rocker->pdev; u64 test_reg; u64 rnd; rnd = get_random_u32(); rnd >>= 1; rocker_write32(rocker, TEST_REG, rnd); test_reg = rocker_read32(rocker, TEST_REG); if (test_reg != rnd * 2) { dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n", test_reg, rnd * 2); return -EIO; } rnd = get_random_u32(); rnd <<= 31; rnd |= get_random_u32(); rocker_write64(rocker, TEST_REG64, rnd); test_reg = rocker_read64(rocker, TEST_REG64); if (test_reg != rnd * 2) { dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n", test_reg, rnd * 2); return -EIO; } return 0; } static int rocker_dma_test_one(const struct rocker *rocker, struct rocker_wait *wait, u32 test_type, dma_addr_t dma_handle, const unsigned char *buf, const unsigned char *expect, size_t size) { const struct pci_dev *pdev = rocker->pdev; int i; rocker_wait_reset(wait); rocker_write32(rocker, TEST_DMA_CTRL, test_type); if (!rocker_wait_event_timeout(wait, HZ / 10)) { dev_err(&pdev->dev, "no interrupt received within a timeout\n"); return -EIO; } for (i = 0; i < size; i++) { if (buf[i] != expect[i]) { dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected", buf[i], i, expect[i]); return -EIO; } } return 0; } #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4) #define ROCKER_TEST_DMA_FILL_PATTERN 0x96 static int rocker_dma_test_offset(const struct rocker *rocker, struct rocker_wait *wait, int offset) { struct pci_dev *pdev = rocker->pdev; unsigned char *alloc; unsigned char *buf; unsigned char *expect; dma_addr_t dma_handle; int i; int err; alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset, GFP_KERNEL | GFP_DMA); if (!alloc) return -ENOMEM; buf = alloc + offset; expect = buf + ROCKER_TEST_DMA_BUF_SIZE; dma_handle = dma_map_single(&pdev->dev, buf, ROCKER_TEST_DMA_BUF_SIZE, DMA_BIDIRECTIONAL); if (dma_mapping_error(&pdev->dev, dma_handle)) { err = -EIO; goto free_alloc; } rocker_write64(rocker, TEST_DMA_ADDR, dma_handle); rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE); memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE); err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL, dma_handle, buf, expect, ROCKER_TEST_DMA_BUF_SIZE); if (err) goto unmap; memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE); err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR, dma_handle, buf, expect, ROCKER_TEST_DMA_BUF_SIZE); if (err) goto unmap; get_random_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++) expect[i] = ~buf[i]; err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT, dma_handle, buf, expect, ROCKER_TEST_DMA_BUF_SIZE); if (err) goto unmap; unmap: dma_unmap_single(&pdev->dev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE, DMA_BIDIRECTIONAL); free_alloc: kfree(alloc); return err; } static int rocker_dma_test(const struct rocker *rocker, struct rocker_wait *wait) { int i; int err; for (i = 0; i < 8; i++) { err = rocker_dma_test_offset(rocker, wait, i); if (err) return err; } return 0; } static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id) { struct rocker_wait *wait = dev_id; rocker_wait_wake_up(wait); return IRQ_HANDLED; } static int rocker_basic_hw_test(const struct rocker *rocker) { const struct pci_dev *pdev = rocker->pdev; struct rocker_wait wait; int err; err = rocker_reg_test(rocker); if (err) { dev_err(&pdev->dev, "reg test failed\n"); return err; } err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), rocker_test_irq_handler, 0, rocker_driver_name, &wait); if (err) { dev_err(&pdev->dev, "cannot assign test irq\n"); return err; } rocker_wait_init(&wait); rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST); if (!rocker_wait_event_timeout(&wait, HZ / 10)) { dev_err(&pdev->dev, "no interrupt received within a timeout\n"); err = -EIO; goto free_irq; } err = rocker_dma_test(rocker, &wait); if (err) dev_err(&pdev->dev, "dma test failed\n"); free_irq: free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait); return err; } /****************************************** * DMA rings and descriptors manipulations ******************************************/ static u32 __pos_inc(u32 pos, size_t limit) { return ++pos == limit ? 0 : pos; } static int rocker_desc_err(const struct rocker_desc_info *desc_info) { int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN; switch (err) { case ROCKER_OK: return 0; case -ROCKER_ENOENT: return -ENOENT; case -ROCKER_ENXIO: return -ENXIO; case -ROCKER_ENOMEM: return -ENOMEM; case -ROCKER_EEXIST: return -EEXIST; case -ROCKER_EINVAL: return -EINVAL; case -ROCKER_EMSGSIZE: return -EMSGSIZE; case -ROCKER_ENOTSUP: return -EOPNOTSUPP; case -ROCKER_ENOBUFS: return -ENOBUFS; } return -EINVAL; } static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info) { desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN; } static bool rocker_desc_gen(const struct rocker_desc_info *desc_info) { u32 comp_err = desc_info->desc->comp_err; return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false; } static void * rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info) { return (void *)(uintptr_t)desc_info->desc->cookie; } static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info, void *ptr) { desc_info->desc->cookie = (uintptr_t) ptr; } static struct rocker_desc_info * rocker_desc_head_get(const struct rocker_dma_ring_info *info) { struct rocker_desc_info *desc_info; u32 head = __pos_inc(info->head, info->size); desc_info = &info->desc_info[info->head]; if (head == info->tail) return NULL; /* ring full */ desc_info->tlv_size = 0; return desc_info; } static void rocker_desc_commit(const struct rocker_desc_info *desc_info) { desc_info->desc->buf_size = desc_info->data_size; desc_info->desc->tlv_size = desc_info->tlv_size; } static void rocker_desc_head_set(const struct rocker *rocker, struct rocker_dma_ring_info *info, const struct rocker_desc_info *desc_info) { u32 head = __pos_inc(info->head, info->size); BUG_ON(head == info->tail); rocker_desc_commit(desc_info); info->head = head; rocker_write32(rocker, DMA_DESC_HEAD(info->type), head); } static struct rocker_desc_info * rocker_desc_tail_get(struct rocker_dma_ring_info *info) { struct rocker_desc_info *desc_info; if (info->tail == info->head) return NULL; /* nothing to be done between head and tail */ desc_info = &info->desc_info[info->tail]; if (!rocker_desc_gen(desc_info)) return NULL; /* gen bit not set, desc is not ready yet */ info->tail = __pos_inc(info->tail, info->size); desc_info->tlv_size = desc_info->desc->tlv_size; return desc_info; } static void rocker_dma_ring_credits_set(const struct rocker *rocker, const struct rocker_dma_ring_info *info, u32 credits) { if (credits) rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits); } static unsigned long rocker_dma_ring_size_fix(size_t size) { return max(ROCKER_DMA_SIZE_MIN, min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX)); } static int rocker_dma_ring_create(const struct rocker *rocker, unsigned int type, size_t size, struct rocker_dma_ring_info *info) { int i; BUG_ON(size != rocker_dma_ring_size_fix(size)); info->size = size; info->type = type; info->head = 0; info->tail = 0; info->desc_info = kcalloc(info->size, sizeof(*info->desc_info), GFP_KERNEL); if (!info->desc_info) return -ENOMEM; info->desc = dma_alloc_coherent(&rocker->pdev->dev, info->size * sizeof(*info->desc), &info->mapaddr, GFP_KERNEL); if (!info->desc) { kfree(info->desc_info); return -ENOMEM; } for (i = 0; i < info->size; i++) info->desc_info[i].desc = &info->desc[i]; rocker_write32(rocker, DMA_DESC_CTRL(info->type), ROCKER_DMA_DESC_CTRL_RESET); rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr); rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size); return 0; } static void rocker_dma_ring_destroy(const struct rocker *rocker, const struct rocker_dma_ring_info *info) { rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0); dma_free_coherent(&rocker->pdev->dev, info->size * sizeof(struct rocker_desc), info->desc, info->mapaddr); kfree(info->desc_info); } static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker, struct rocker_dma_ring_info *info) { int i; BUG_ON(info->head || info->tail); /* When ring is consumer, we need to advance head for each desc. * That tells hw that the desc is ready to be used by it. */ for (i = 0; i < info->size - 1; i++) rocker_desc_head_set(rocker, info, &info->desc_info[i]); rocker_desc_commit(&info->desc_info[i]); } static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker, const struct rocker_dma_ring_info *info, int direction, size_t buf_size) { struct pci_dev *pdev = rocker->pdev; int i; int err; for (i = 0; i < info->size; i++) { struct rocker_desc_info *desc_info = &info->desc_info[i]; struct rocker_desc *desc = &info->desc[i]; dma_addr_t dma_handle; char *buf; buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA); if (!buf) { err = -ENOMEM; goto rollback; } dma_handle = dma_map_single(&pdev->dev, buf, buf_size, direction); if (dma_mapping_error(&pdev->dev, dma_handle)) { kfree(buf); err = -EIO; goto rollback; } desc_info->data = buf; desc_info->data_size = buf_size; dma_unmap_addr_set(desc_info, mapaddr, dma_handle); desc->buf_addr = dma_handle; desc->buf_size = buf_size; } return 0; rollback: for (i--; i >= 0; i--) { const struct rocker_desc_info *desc_info = &info->desc_info[i]; dma_unmap_single(&pdev->dev, dma_unmap_addr(desc_info, mapaddr), desc_info->data_size, direction); kfree(desc_info->data); } return err; } static void rocker_dma_ring_bufs_free(const struct rocker *rocker, const struct rocker_dma_ring_info *info, int direction) { struct pci_dev *pdev = rocker->pdev; int i; for (i = 0; i < info->size; i++) { const struct rocker_desc_info *desc_info = &info->desc_info[i]; struct rocker_desc *desc = &info->desc[i]; desc->buf_addr = 0; desc->buf_size = 0; dma_unmap_single(&pdev->dev, dma_unmap_addr(desc_info, mapaddr), desc_info->data_size, direction); kfree(desc_info->data); } } static int rocker_dma_cmd_ring_wait_alloc(struct rocker_desc_info *desc_info) { struct rocker_wait *wait; wait = rocker_wait_create(); if (!wait) return -ENOMEM; rocker_desc_cookie_ptr_set(desc_info, wait); return 0; } static void rocker_dma_cmd_ring_wait_free(const struct rocker_desc_info *desc_info) { struct rocker_wait *wait = rocker_desc_cookie_ptr_get(desc_info); rocker_wait_destroy(wait); } static int rocker_dma_cmd_ring_waits_alloc(const struct rocker *rocker) { const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring; int i; int err; for (i = 0; i < cmd_ring->size; i++) { err = rocker_dma_cmd_ring_wait_alloc(&cmd_ring->desc_info[i]); if (err) goto rollback; } return 0; rollback: for (i--; i >= 0; i--) rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]); return err; } static void rocker_dma_cmd_ring_waits_free(const struct rocker *rocker) { const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring; int i; for (i = 0; i < cmd_ring->size; i++) rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]); } static int rocker_dma_rings_init(struct rocker *rocker) { const struct pci_dev *pdev = rocker->pdev; int err; err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD, ROCKER_DMA_CMD_DEFAULT_SIZE, &rocker->cmd_ring); if (err) { dev_err(&pdev->dev, "failed to create command dma ring\n"); return err; } spin_lock_init(&rocker->cmd_ring_lock); err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring, DMA_BIDIRECTIONAL, PAGE_SIZE); if (err) { dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n"); goto err_dma_cmd_ring_bufs_alloc; } err = rocker_dma_cmd_ring_waits_alloc(rocker); if (err) { dev_err(&pdev->dev, "failed to alloc command dma ring waits\n"); goto err_dma_cmd_ring_waits_alloc; } err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT, ROCKER_DMA_EVENT_DEFAULT_SIZE, &rocker->event_ring); if (err) { dev_err(&pdev->dev, "failed to create event dma ring\n"); goto err_dma_event_ring_create; } err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring, DMA_FROM_DEVICE, PAGE_SIZE); if (err) { dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n"); goto err_dma_event_ring_bufs_alloc; } rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring); return 0; err_dma_event_ring_bufs_alloc: rocker_dma_ring_destroy(rocker, &rocker->event_ring); err_dma_event_ring_create: rocker_dma_cmd_ring_waits_free(rocker); err_dma_cmd_ring_waits_alloc: rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, DMA_BIDIRECTIONAL); err_dma_cmd_ring_bufs_alloc: rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); return err; } static void rocker_dma_rings_fini(struct rocker *rocker) { rocker_dma_ring_bufs_free(rocker, &rocker->event_ring, DMA_BIDIRECTIONAL); rocker_dma_ring_destroy(rocker, &rocker->event_ring); rocker_dma_cmd_ring_waits_free(rocker); rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, DMA_BIDIRECTIONAL); rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); } static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, struct sk_buff *skb, size_t buf_len) { const struct rocker *rocker = rocker_port->rocker; struct pci_dev *pdev = rocker->pdev; dma_addr_t dma_handle; dma_handle = dma_map_single(&pdev->dev, skb->data, buf_len, DMA_FROM_DEVICE); if (dma_mapping_error(&pdev->dev, dma_handle)) return -EIO; if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle)) goto tlv_put_failure; if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len)) goto tlv_put_failure; return 0; tlv_put_failure: dma_unmap_single(&pdev->dev, dma_handle, buf_len, DMA_FROM_DEVICE); desc_info->tlv_size = 0; return -EMSGSIZE; } static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port) { return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; } static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info) { struct net_device *dev = rocker_port->dev; struct sk_buff *skb; size_t buf_len = rocker_port_rx_buf_len(rocker_port); int err; /* Ensure that hw will see tlv_size zero in case of an error. * That tells hw to use another descriptor. */ rocker_desc_cookie_ptr_set(desc_info, NULL); desc_info->tlv_size = 0; skb = netdev_alloc_skb_ip_align(dev, buf_len); if (!skb) return -ENOMEM; err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len); if (err) { dev_kfree_skb_any(skb); return err; } rocker_desc_cookie_ptr_set(desc_info, skb); return 0; } static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker, const struct rocker_tlv **attrs) { struct pci_dev *pdev = rocker->pdev; dma_addr_t dma_handle; size_t len; if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] || !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]) return; dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]); len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]); dma_unmap_single(&pdev->dev, dma_handle, len, DMA_FROM_DEVICE); } static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker, const struct rocker_desc_info *desc_info) { const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); if (!skb) return; rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); rocker_dma_rx_ring_skb_unmap(rocker, attrs); dev_kfree_skb_any(skb); } static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port) { const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; const struct rocker *rocker = rocker_port->rocker; int i; int err; for (i = 0; i < rx_ring->size; i++) { err = rocker_dma_rx_ring_skb_alloc(rocker_port, &rx_ring->desc_info[i]); if (err) goto rollback; } return 0; rollback: for (i--; i >= 0; i--) rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); return err; } static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port) { const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; const struct rocker *rocker = rocker_port->rocker; int i; for (i = 0; i < rx_ring->size; i++) rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); } static int rocker_port_dma_rings_init(struct rocker_port *rocker_port) { struct rocker *rocker = rocker_port->rocker; int err; err = rocker_dma_ring_create(rocker, ROCKER_DMA_TX(rocker_port->port_number), ROCKER_DMA_TX_DEFAULT_SIZE, &rocker_port->tx_ring); if (err) { netdev_err(rocker_port->dev, "failed to create tx dma ring\n"); return err; } err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring, DMA_TO_DEVICE, ROCKER_DMA_TX_DESC_SIZE); if (err) { netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n"); goto err_dma_tx_ring_bufs_alloc; } err = rocker_dma_ring_create(rocker, ROCKER_DMA_RX(rocker_port->port_number), ROCKER_DMA_RX_DEFAULT_SIZE, &rocker_port->rx_ring); if (err) { netdev_err(rocker_port->dev, "failed to create rx dma ring\n"); goto err_dma_rx_ring_create; } err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring, DMA_BIDIRECTIONAL, ROCKER_DMA_RX_DESC_SIZE); if (err) { netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n"); goto err_dma_rx_ring_bufs_alloc; } err = rocker_dma_rx_ring_skbs_alloc(rocker_port); if (err) { netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n"); goto err_dma_rx_ring_skbs_alloc; } rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring); return 0; err_dma_rx_ring_skbs_alloc: rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, DMA_BIDIRECTIONAL); err_dma_rx_ring_bufs_alloc: rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); err_dma_rx_ring_create: rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, DMA_TO_DEVICE); err_dma_tx_ring_bufs_alloc: rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); return err; } static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port) { struct rocker *rocker = rocker_port->rocker; rocker_dma_rx_ring_skbs_free(rocker_port); rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, DMA_BIDIRECTIONAL); rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, DMA_TO_DEVICE); rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); } static void rocker_port_set_enable(const struct rocker_port *rocker_port, bool enable) { u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE); if (enable) val |= 1ULL << rocker_port->pport; else val &= ~(1ULL << rocker_port->pport); rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val); } /******************************** * Interrupt handler and helpers ********************************/ static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id) { struct rocker *rocker = dev_id; const struct rocker_desc_info *desc_info; struct rocker_wait *wait; u32 credits = 0; spin_lock(&rocker->cmd_ring_lock); while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) { wait = rocker_desc_cookie_ptr_get(desc_info); if (wait->nowait) { rocker_desc_gen_clear(desc_info); } else { rocker_wait_wake_up(wait); } credits++; } spin_unlock(&rocker->cmd_ring_lock); rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits); return IRQ_HANDLED; } static void rocker_port_link_up(const struct rocker_port *rocker_port) { netif_carrier_on(rocker_port->dev); netdev_info(rocker_port->dev, "Link is up\n"); } static void rocker_port_link_down(const struct rocker_port *rocker_port) { netif_carrier_off(rocker_port->dev); netdev_info(rocker_port->dev, "Link is down\n"); } static int rocker_event_link_change(const struct rocker *rocker, const struct rocker_tlv *info) { const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1]; unsigned int port_number; bool link_up; struct rocker_port *rocker_port; rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info); if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] || !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]) return -EIO; port_number = rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1; link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]); if (port_number >= rocker->port_count) return -EINVAL; rocker_port = rocker->ports[port_number]; if (netif_carrier_ok(rocker_port->dev) != link_up) { if (link_up) rocker_port_link_up(rocker_port); else rocker_port_link_down(rocker_port); } return 0; } static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port, const unsigned char *addr, __be16 vlan_id); static int rocker_event_mac_vlan_seen(const struct rocker *rocker, const struct rocker_tlv *info) { const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1]; unsigned int port_number; struct rocker_port *rocker_port; const unsigned char *addr; __be16 vlan_id; rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info); if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] || !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] || !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]) return -EIO; port_number = rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1; addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]); vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]); if (port_number >= rocker->port_count) return -EINVAL; rocker_port = rocker->ports[port_number]; return rocker_world_port_ev_mac_vlan_seen(rocker_port, addr, vlan_id); } static int rocker_event_process(const struct rocker *rocker, const struct rocker_desc_info *desc_info) { const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1]; const struct rocker_tlv *info; u16 type; rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info); if (!attrs[ROCKER_TLV_EVENT_TYPE] || !attrs[ROCKER_TLV_EVENT_INFO]) return -EIO; type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]); info = attrs[ROCKER_TLV_EVENT_INFO]; switch (type) { case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED: return rocker_event_link_change(rocker, info); case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN: return rocker_event_mac_vlan_seen(rocker, info); } return -EOPNOTSUPP; } static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id) { struct rocker *rocker = dev_id; const struct pci_dev *pdev = rocker->pdev; const struct rocker_desc_info *desc_info; u32 credits = 0; int err; while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) { err = rocker_desc_err(desc_info); if (err) { dev_err(&pdev->dev, "event desc received with err %d\n", err); } else { err = rocker_event_process(rocker, desc_info); if (err) dev_err(&pdev->dev, "event processing failed with err %d\n", err); } rocker_desc_gen_clear(desc_info); rocker_desc_head_set(rocker, &rocker->event_ring, desc_info); credits++; } rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits); return IRQ_HANDLED; } static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id) { struct rocker_port *rocker_port = dev_id; napi_schedule(&rocker_port->napi_tx); return IRQ_HANDLED; } static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id) { struct rocker_port *rocker_port = dev_id; napi_schedule(&rocker_port->napi_rx); return IRQ_HANDLED; } /******************** * Command interface ********************/ int rocker_cmd_exec(struct rocker_port *rocker_port, bool nowait, rocker_cmd_prep_cb_t prepare, void *prepare_priv, rocker_cmd_proc_cb_t process, void *process_priv) { struct rocker *rocker = rocker_port->rocker; struct rocker_desc_info *desc_info; struct rocker_wait *wait; unsigned long lock_flags; int err; spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags); desc_info = rocker_desc_head_get(&rocker->cmd_ring); if (!desc_info) { spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); return -EAGAIN; } wait = rocker_desc_cookie_ptr_get(desc_info); rocker_wait_init(wait); wait->nowait = nowait; err = prepare(rocker_port, desc_info, prepare_priv); if (err) { spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); return err; } rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info); spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); if (nowait) return 0; if (!rocker_wait_event_timeout(wait, HZ / 10)) return -EIO; err = rocker_desc_err(desc_info); if (err) return err; if (process) err = process(rocker_port, desc_info, process_priv); rocker_desc_gen_clear(desc_info); return err; } static int rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { struct rocker_tlv *cmd_info; if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS)) return -EMSGSIZE; cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); if (!cmd_info) return -EMSGSIZE; if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, rocker_port->pport)) return -EMSGSIZE; rocker_tlv_nest_end(desc_info, cmd_info); return 0; } static int rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port, const struct rocker_desc_info *desc_info, void *priv) { struct ethtool_link_ksettings *ecmd = priv; const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; u32 speed; u8 duplex; u8 autoneg; rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); if (!attrs[ROCKER_TLV_CMD_INFO]) return -EIO; rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, attrs[ROCKER_TLV_CMD_INFO]); if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] || !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] || !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]) return -EIO; speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]); duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]); autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]); ethtool_link_ksettings_zero_link_mode(ecmd, supported); ethtool_link_ksettings_add_link_mode(ecmd, supported, TP); ecmd->base.phy_address = 0xff; ecmd->base.port = PORT_TP; ecmd->base.speed = speed; ecmd->base.duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF; ecmd->base.autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE; return 0; } static int rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port, const struct rocker_desc_info *desc_info, void *priv) { unsigned char *macaddr = priv; const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; const struct rocker_tlv *attr; rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); if (!attrs[ROCKER_TLV_CMD_INFO]) return -EIO; rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, attrs[ROCKER_TLV_CMD_INFO]); attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]; if (!attr) return -EIO; if (rocker_tlv_len(attr) != ETH_ALEN) return -EINVAL; ether_addr_copy(macaddr, rocker_tlv_data(attr)); return 0; } static int rocker_cmd_get_port_settings_mode_proc(const struct rocker_port *rocker_port, const struct rocker_desc_info *desc_info, void *priv) { u8 *p_mode = priv; const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; const struct rocker_tlv *attr; rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); if (!attrs[ROCKER_TLV_CMD_INFO]) return -EIO; rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, attrs[ROCKER_TLV_CMD_INFO]); attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]; if (!attr) return -EIO; *p_mode = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]); return 0; } struct port_name { char *buf; size_t len; }; static int rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port, const struct rocker_desc_info *desc_info, void *priv) { const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; struct port_name *name = priv; const struct rocker_tlv *attr; size_t i, j, len; const char *str; rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); if (!attrs[ROCKER_TLV_CMD_INFO]) return -EIO; rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, attrs[ROCKER_TLV_CMD_INFO]); attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME]; if (!attr) return -EIO; len = min_t(size_t, rocker_tlv_len(attr), name->len); str = rocker_tlv_data(attr); /* make sure name only contains alphanumeric characters */ for (i = j = 0; i < len; ++i) { if (isalnum(str[i])) { name->buf[j] = str[i]; j++; } } if (j == 0) return -EIO; name->buf[j] = '\0'; return 0; } static int rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { struct ethtool_link_ksettings *ecmd = priv; struct rocker_tlv *cmd_info; if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) return -EMSGSIZE; cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); if (!cmd_info) return -EMSGSIZE; if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, rocker_port->pport)) return -EMSGSIZE; if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, ecmd->base.speed)) return -EMSGSIZE; if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, ecmd->base.duplex)) return -EMSGSIZE; if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, ecmd->base.autoneg)) return -EMSGSIZE; rocker_tlv_nest_end(desc_info, cmd_info); return 0; } static int rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { const unsigned char *macaddr = priv; struct rocker_tlv *cmd_info; if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) return -EMSGSIZE; cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); if (!cmd_info) return -EMSGSIZE; if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, rocker_port->pport)) return -EMSGSIZE; if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, ETH_ALEN, macaddr)) return -EMSGSIZE; rocker_tlv_nest_end(desc_info, cmd_info); return 0; } static int rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { int mtu = *(int *)priv; struct rocker_tlv *cmd_info; if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) return -EMSGSIZE; cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); if (!cmd_info) return -EMSGSIZE; if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, rocker_port->pport)) return -EMSGSIZE; if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU, mtu)) return -EMSGSIZE; rocker_tlv_nest_end(desc_info, cmd_info); return 0; } static int rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { bool learning = *(bool *)priv; struct rocker_tlv *cmd_info; if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) return -EMSGSIZE; cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); if (!cmd_info) return -EMSGSIZE; if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, rocker_port->pport)) return -EMSGSIZE; if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING, learning)) return -EMSGSIZE; rocker_tlv_nest_end(desc_info, cmd_info); return 0; } static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port, struct ethtool_link_ksettings *ecmd) { return rocker_cmd_exec(rocker_port, false, rocker_cmd_get_port_settings_prep, NULL, rocker_cmd_get_port_settings_ethtool_proc, ecmd); } static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port, unsigned char *macaddr) { return rocker_cmd_exec(rocker_port, false, rocker_cmd_get_port_settings_prep, NULL, rocker_cmd_get_port_settings_macaddr_proc, macaddr); } static int rocker_cmd_get_port_settings_mode(struct rocker_port *rocker_port, u8 *p_mode) { return rocker_cmd_exec(rocker_port, false, rocker_cmd_get_port_settings_prep, NULL, rocker_cmd_get_port_settings_mode_proc, p_mode); } static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port, const struct ethtool_link_ksettings *ecmd) { struct ethtool_link_ksettings copy_ecmd; memcpy(©_ecmd, ecmd, sizeof(copy_ecmd)); return rocker_cmd_exec(rocker_port, false, rocker_cmd_set_port_settings_ethtool_prep, ©_ecmd, NULL, NULL); } static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port, unsigned char *macaddr) { return rocker_cmd_exec(rocker_port, false, rocker_cmd_set_port_settings_macaddr_prep, macaddr, NULL, NULL); } static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port, int mtu) { return rocker_cmd_exec(rocker_port, false, rocker_cmd_set_port_settings_mtu_prep, &mtu, NULL, NULL); } int rocker_port_set_learning(struct rocker_port *rocker_port, bool learning) { return rocker_cmd_exec(rocker_port, false, rocker_cmd_set_port_learning_prep, &learning, NULL, NULL); } /********************** * Worlds manipulation **********************/ static struct rocker_world_ops *rocker_world_ops[] = { &rocker_ofdpa_ops, }; #define ROCKER_WORLD_OPS_LEN ARRAY_SIZE(rocker_world_ops) static struct rocker_world_ops *rocker_world_ops_find(u8 mode) { int i; for (i = 0; i < ROCKER_WORLD_OPS_LEN; i++) if (rocker_world_ops[i]->mode == mode) return rocker_world_ops[i]; return NULL; } static int rocker_world_init(struct rocker *rocker, u8 mode) { struct rocker_world_ops *wops; int err; wops = rocker_world_ops_find(mode); if (!wops) { dev_err(&rocker->pdev->dev, "port mode \"%d\" is not supported\n", mode); return -EINVAL; } rocker->wops = wops; rocker->wpriv = kzalloc(wops->priv_size, GFP_KERNEL); if (!rocker->wpriv) return -ENOMEM; if (!wops->init) return 0; err = wops->init(rocker); if (err) kfree(rocker->wpriv); return err; } static void rocker_world_fini(struct rocker *rocker) { struct rocker_world_ops *wops = rocker->wops; if (!wops || !wops->fini) return; wops->fini(rocker); kfree(rocker->wpriv); } static int rocker_world_check_init(struct rocker_port *rocker_port) { struct rocker *rocker = rocker_port->rocker; u8 mode; int err; err = rocker_cmd_get_port_settings_mode(rocker_port, &mode); if (err) { dev_err(&rocker->pdev->dev, "failed to get port mode\n"); return err; } if (rocker->wops) { if (rocker->wops->mode != mode) { dev_err(&rocker->pdev->dev, "hardware has ports in different worlds, which is not supported\n"); return -EINVAL; } return 0; } return rocker_world_init(rocker, mode); } static int rocker_world_port_pre_init(struct rocker_port *rocker_port) { struct rocker_world_ops *wops = rocker_port->rocker->wops; int err; rocker_port->wpriv = kzalloc(wops->port_priv_size, GFP_KERNEL); if (!rocker_port->wpriv) return -ENOMEM; if (!wops->port_pre_init) return 0; err = wops->port_pre_init(rocker_port); if (err) kfree(rocker_port->wpriv); return 0; } static int rocker_world_port_init(struct rocker_port *rocker_port) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_init) return 0; return wops->port_init(rocker_port); } static void rocker_world_port_fini(struct rocker_port *rocker_port) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_fini) return; wops->port_fini(rocker_port); } static void rocker_world_port_post_fini(struct rocker_port *rocker_port) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_post_fini) return; wops->port_post_fini(rocker_port); kfree(rocker_port->wpriv); } static int rocker_world_port_open(struct rocker_port *rocker_port) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_open) return 0; return wops->port_open(rocker_port); } static void rocker_world_port_stop(struct rocker_port *rocker_port) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_stop) return; wops->port_stop(rocker_port); } static int rocker_world_port_attr_stp_state_set(struct rocker_port *rocker_port, u8 state) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_attr_stp_state_set) return -EOPNOTSUPP; return wops->port_attr_stp_state_set(rocker_port, state); } static int rocker_world_port_attr_bridge_flags_support_get(const struct rocker_port * rocker_port, unsigned long * p_brport_flags_support) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_attr_bridge_flags_support_get) return -EOPNOTSUPP; return wops->port_attr_bridge_flags_support_get(rocker_port, p_brport_flags_support); } static int rocker_world_port_attr_pre_bridge_flags_set(struct rocker_port *rocker_port, struct switchdev_brport_flags flags) { struct rocker_world_ops *wops = rocker_port->rocker->wops; unsigned long brport_flags_s; int err; if (!wops->port_attr_bridge_flags_set) return -EOPNOTSUPP; err = rocker_world_port_attr_bridge_flags_support_get(rocker_port, &brport_flags_s); if (err) return err; if (flags.mask & ~brport_flags_s) return -EINVAL; return 0; } static int rocker_world_port_attr_bridge_flags_set(struct rocker_port *rocker_port, struct switchdev_brport_flags flags) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_attr_bridge_flags_set) return -EOPNOTSUPP; return wops->port_attr_bridge_flags_set(rocker_port, flags.val); } static int rocker_world_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port, u32 ageing_time) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_attr_bridge_ageing_time_set) return -EOPNOTSUPP; return wops->port_attr_bridge_ageing_time_set(rocker_port, ageing_time); } static int rocker_world_port_obj_vlan_add(struct rocker_port *rocker_port, const struct switchdev_obj_port_vlan *vlan) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_obj_vlan_add) return -EOPNOTSUPP; return wops->port_obj_vlan_add(rocker_port, vlan); } static int rocker_world_port_obj_vlan_del(struct rocker_port *rocker_port, const struct switchdev_obj_port_vlan *vlan) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (netif_is_bridge_master(vlan->obj.orig_dev)) return -EOPNOTSUPP; if (!wops->port_obj_vlan_del) return -EOPNOTSUPP; return wops->port_obj_vlan_del(rocker_port, vlan); } static int rocker_world_port_fdb_add(struct rocker_port *rocker_port, struct switchdev_notifier_fdb_info *info) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_obj_fdb_add) return -EOPNOTSUPP; return wops->port_obj_fdb_add(rocker_port, info->vid, info->addr); } static int rocker_world_port_fdb_del(struct rocker_port *rocker_port, struct switchdev_notifier_fdb_info *info) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_obj_fdb_del) return -EOPNOTSUPP; return wops->port_obj_fdb_del(rocker_port, info->vid, info->addr); } static int rocker_world_port_master_linked(struct rocker_port *rocker_port, struct net_device *master, struct netlink_ext_ack *extack) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_master_linked) return -EOPNOTSUPP; return wops->port_master_linked(rocker_port, master, extack); } static int rocker_world_port_master_unlinked(struct rocker_port *rocker_port, struct net_device *master) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_master_unlinked) return -EOPNOTSUPP; return wops->port_master_unlinked(rocker_port, master); } static int rocker_world_port_neigh_update(struct rocker_port *rocker_port, struct neighbour *n) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_neigh_update) return -EOPNOTSUPP; return wops->port_neigh_update(rocker_port, n); } static int rocker_world_port_neigh_destroy(struct rocker_port *rocker_port, struct neighbour *n) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_neigh_destroy) return -EOPNOTSUPP; return wops->port_neigh_destroy(rocker_port, n); } static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port, const unsigned char *addr, __be16 vlan_id) { struct rocker_world_ops *wops = rocker_port->rocker->wops; if (!wops->port_ev_mac_vlan_seen) return -EOPNOTSUPP; return wops->port_ev_mac_vlan_seen(rocker_port, addr, vlan_id); } static int rocker_world_fib4_add(struct rocker *rocker, const struct fib_entry_notifier_info *fen_info) { struct rocker_world_ops *wops = rocker->wops; if (!wops->fib4_add) return 0; return wops->fib4_add(rocker, fen_info); } static int rocker_world_fib4_del(struct rocker *rocker, const struct fib_entry_notifier_info *fen_info) { struct rocker_world_ops *wops = rocker->wops; if (!wops->fib4_del) return 0; return wops->fib4_del(rocker, fen_info); } static void rocker_world_fib4_abort(struct rocker *rocker) { struct rocker_world_ops *wops = rocker->wops; if (wops->fib4_abort) wops->fib4_abort(rocker); } /***************** * Net device ops *****************/ static int rocker_port_open(struct net_device *dev) { struct rocker_port *rocker_port = netdev_priv(dev); int err; err = rocker_port_dma_rings_init(rocker_port); if (err) return err; err = request_irq(rocker_msix_tx_vector(rocker_port), rocker_tx_irq_handler, 0, rocker_driver_name, rocker_port); if (err) { netdev_err(rocker_port->dev, "cannot assign tx irq\n"); goto err_request_tx_irq; } err = request_irq(rocker_msix_rx_vector(rocker_port), rocker_rx_irq_handler, 0, rocker_driver_name, rocker_port); if (err) { netdev_err(rocker_port->dev, "cannot assign rx irq\n"); goto err_request_rx_irq; } err = rocker_world_port_open(rocker_port); if (err) { netdev_err(rocker_port->dev, "cannot open port in world\n"); goto err_world_port_open; } napi_enable(&rocker_port->napi_tx); napi_enable(&rocker_port->napi_rx); if (!dev->proto_down) rocker_port_set_enable(rocker_port, true); netif_start_queue(dev); return 0; err_world_port_open: free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); err_request_rx_irq: free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); err_request_tx_irq: rocker_port_dma_rings_fini(rocker_port); return err; } static int rocker_port_stop(struct net_device *dev) { struct rocker_port *rocker_port = netdev_priv(dev); netif_stop_queue(dev); rocker_port_set_enable(rocker_port, false); napi_disable(&rocker_port->napi_rx); napi_disable(&rocker_port->napi_tx); rocker_world_port_stop(rocker_port); free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); rocker_port_dma_rings_fini(rocker_port); return 0; } static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port, const struct rocker_desc_info *desc_info) { const struct rocker *rocker = rocker_port->rocker; struct pci_dev *pdev = rocker->pdev; const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1]; struct rocker_tlv *attr; int rem; rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info); if (!attrs[ROCKER_TLV_TX_FRAGS]) return; rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) { const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1]; dma_addr_t dma_handle; size_t len; if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG) continue; rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX, attr); if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] || !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]) continue; dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]); len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]); dma_unmap_single(&pdev->dev, dma_handle, len, DMA_TO_DEVICE); } } static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, char *buf, size_t buf_len) { const struct rocker *rocker = rocker_port->rocker; struct pci_dev *pdev = rocker->pdev; dma_addr_t dma_handle; struct rocker_tlv *frag; dma_handle = dma_map_single(&pdev->dev, buf, buf_len, DMA_TO_DEVICE); if (unlikely(dma_mapping_error(&pdev->dev, dma_handle))) { if (net_ratelimit()) netdev_err(rocker_port->dev, "failed to dma map tx frag\n"); return -EIO; } frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG); if (!frag) goto unmap_frag; if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR, dma_handle)) goto nest_cancel; if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN, buf_len)) goto nest_cancel; rocker_tlv_nest_end(desc_info, frag); return 0; nest_cancel: rocker_tlv_nest_cancel(desc_info, frag); unmap_frag: dma_unmap_single(&pdev->dev, dma_handle, buf_len, DMA_TO_DEVICE); return -EMSGSIZE; } static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev) { struct rocker_port *rocker_port = netdev_priv(dev); struct rocker *rocker = rocker_port->rocker; struct rocker_desc_info *desc_info; struct rocker_tlv *frags; int i; int err; desc_info = rocker_desc_head_get(&rocker_port->tx_ring); if (unlikely(!desc_info)) { if (net_ratelimit()) netdev_err(dev, "tx ring full when queue awake\n"); return NETDEV_TX_BUSY; } rocker_desc_cookie_ptr_set(desc_info, skb); frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS); if (!frags) goto out; err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, skb->data, skb_headlen(skb)); if (err) goto nest_cancel; if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) { err = skb_linearize(skb); if (err) goto unmap_frags; } for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, skb_frag_address(frag), skb_frag_size(frag)); if (err) goto unmap_frags; } rocker_tlv_nest_end(desc_info, frags); rocker_desc_gen_clear(desc_info); rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info); desc_info = rocker_desc_head_get(&rocker_port->tx_ring); if (!desc_info) netif_stop_queue(dev); return NETDEV_TX_OK; unmap_frags: rocker_tx_desc_frags_unmap(rocker_port, desc_info); nest_cancel: rocker_tlv_nest_cancel(desc_info, frags); out: dev_kfree_skb(skb); dev->stats.tx_dropped++; return NETDEV_TX_OK; } static int rocker_port_set_mac_address(struct net_device *dev, void *p) { struct sockaddr *addr = p; struct rocker_port *rocker_port = netdev_priv(dev); int err; if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL; err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data); if (err) return err; eth_hw_addr_set(dev, addr->sa_data); return 0; } static int rocker_port_change_mtu(struct net_device *dev, int new_mtu) { struct rocker_port *rocker_port = netdev_priv(dev); int running = netif_running(dev); int err; if (running) rocker_port_stop(dev); netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu); WRITE_ONCE(dev->mtu, new_mtu); err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu); if (err) return err; if (running) err = rocker_port_open(dev); return err; } static int rocker_port_get_phys_port_name(struct net_device *dev, char *buf, size_t len) { struct rocker_port *rocker_port = netdev_priv(dev); struct port_name name = { .buf = buf, .len = len }; int err; err = rocker_cmd_exec(rocker_port, false, rocker_cmd_get_port_settings_prep, NULL, rocker_cmd_get_port_settings_phys_name_proc, &name); return err ? -EOPNOTSUPP : 0; } static void rocker_port_neigh_destroy(struct net_device *dev, struct neighbour *n) { struct rocker_port *rocker_port = netdev_priv(n->dev); int err; err = rocker_world_port_neigh_destroy(rocker_port, n); if (err) netdev_warn(rocker_port->dev, "failed to handle neigh destroy (err %d)\n", err); } static int rocker_port_get_port_parent_id(struct net_device *dev, struct netdev_phys_item_id *ppid) { const struct rocker_port *rocker_port = netdev_priv(dev); const struct rocker *rocker = rocker_port->rocker; ppid->id_len = sizeof(rocker->hw.id); memcpy(&ppid->id, &rocker->hw.id, ppid->id_len); return 0; } static const struct net_device_ops rocker_port_netdev_ops = { .ndo_open = rocker_port_open, .ndo_stop = rocker_port_stop, .ndo_start_xmit = rocker_port_xmit, .ndo_set_mac_address = rocker_port_set_mac_address, .ndo_change_mtu = rocker_port_change_mtu, .ndo_get_phys_port_name = rocker_port_get_phys_port_name, .ndo_neigh_destroy = rocker_port_neigh_destroy, .ndo_get_port_parent_id = rocker_port_get_port_parent_id, }; /******************** * swdev interface ********************/ static int rocker_port_attr_set(struct net_device *dev, const struct switchdev_attr *attr) { struct rocker_port *rocker_port = netdev_priv(dev); int err = 0; switch (attr->id) { case SWITCHDEV_ATTR_ID_PORT_STP_STATE: err = rocker_world_port_attr_stp_state_set(rocker_port, attr->u.stp_state); break; case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: err = rocker_world_port_attr_pre_bridge_flags_set(rocker_port, attr->u.brport_flags); break; case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: err = rocker_world_port_attr_bridge_flags_set(rocker_port, attr->u.brport_flags); break; case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: err = rocker_world_port_attr_bridge_ageing_time_set(rocker_port, attr->u.ageing_time); break; default: err = -EOPNOTSUPP; break; } return err; } static int rocker_port_obj_add(struct net_device *dev, const struct switchdev_obj *obj) { struct rocker_port *rocker_port = netdev_priv(dev); int err = 0; switch (obj->id) { case SWITCHDEV_OBJ_ID_PORT_VLAN: err = rocker_world_port_obj_vlan_add(rocker_port, SWITCHDEV_OBJ_PORT_VLAN(obj)); break; default: err = -EOPNOTSUPP; break; } return err; } static int rocker_port_obj_del(struct net_device *dev, const struct switchdev_obj *obj) { struct rocker_port *rocker_port = netdev_priv(dev); int err = 0; switch (obj->id) { case SWITCHDEV_OBJ_ID_PORT_VLAN: err = rocker_world_port_obj_vlan_del(rocker_port, SWITCHDEV_OBJ_PORT_VLAN(obj)); break; default: err = -EOPNOTSUPP; break; } return err; } struct rocker_fib_event_work { struct work_struct work; union { struct fib_entry_notifier_info fen_info; struct fib_rule_notifier_info fr_info; }; struct rocker *rocker; unsigned long event; }; static void rocker_router_fib_event_work(struct work_struct *work) { struct rocker_fib_event_work *fib_work = container_of(work, struct rocker_fib_event_work, work); struct rocker *rocker = fib_work->rocker; struct fib_rule *rule; int err; /* Protect internal structures from changes */ rtnl_lock(); switch (fib_work->event) { case FIB_EVENT_ENTRY_REPLACE: err = rocker_world_fib4_add(rocker, &fib_work->fen_info); if (err) rocker_world_fib4_abort(rocker); fib_info_put(fib_work->fen_info.fi); break; case FIB_EVENT_ENTRY_DEL: rocker_world_fib4_del(rocker, &fib_work->fen_info); fib_info_put(fib_work->fen_info.fi); break; case FIB_EVENT_RULE_ADD: case FIB_EVENT_RULE_DEL: rule = fib_work->fr_info.rule; if (!fib4_rule_default(rule)) rocker_world_fib4_abort(rocker); fib_rule_put(rule); break; } rtnl_unlock(); kfree(fib_work); } /* Called with rcu_read_lock() */ static int rocker_router_fib_event(struct notifier_block *nb, unsigned long event, void *ptr) { struct rocker *rocker = container_of(nb, struct rocker, fib_nb); struct rocker_fib_event_work *fib_work; struct fib_notifier_info *info = ptr; if (info->family != AF_INET) return NOTIFY_DONE; fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); if (WARN_ON(!fib_work)) return NOTIFY_BAD; INIT_WORK(&fib_work->work, rocker_router_fib_event_work); fib_work->rocker = rocker; fib_work->event = event; switch (event) { case FIB_EVENT_ENTRY_REPLACE: case FIB_EVENT_ENTRY_DEL: if (info->family == AF_INET) { struct fib_entry_notifier_info *fen_info = ptr; if (fen_info->fi->fib_nh_is_v6) { NL_SET_ERR_MSG_MOD(info->extack, "IPv6 gateway with IPv4 route is not supported"); kfree(fib_work); return notifier_from_errno(-EINVAL); } if (fen_info->fi->nh) { NL_SET_ERR_MSG_MOD(info->extack, "IPv4 route with nexthop objects is not supported"); kfree(fib_work); return notifier_from_errno(-EINVAL); } } memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info)); /* Take referece on fib_info to prevent it from being * freed while work is queued. Release it afterwards. */ fib_info_hold(fib_work->fen_info.fi); break; case FIB_EVENT_RULE_ADD: case FIB_EVENT_RULE_DEL: memcpy(&fib_work->fr_info, ptr, sizeof(fib_work->fr_info)); fib_rule_get(fib_work->fr_info.rule); break; } queue_work(rocker->rocker_owq, &fib_work->work); return NOTIFY_DONE; } /******************** * ethtool interface ********************/ static int rocker_port_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *ecmd) { struct rocker_port *rocker_port = netdev_priv(dev); return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd); } static int rocker_port_set_link_ksettings(struct net_device *dev, const struct ethtool_link_ksettings *ecmd) { struct rocker_port *rocker_port = netdev_priv(dev); return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd); } static void rocker_port_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo) { strscpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver)); } static struct rocker_port_stats { char str[ETH_GSTRING_LEN]; int type; } rocker_port_stats[] = { { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, }, { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, }, { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, }, { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, }, { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, }, { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, }, { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, }, { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, }, }; #define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats) static void rocker_port_get_strings(struct net_device *netdev, u32 stringset, u8 *data) { u8 *p = data; int i; switch (stringset) { case ETH_SS_STATS: for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN); p += ETH_GSTRING_LEN; } break; } } static int rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { struct rocker_tlv *cmd_stats; if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, ROCKER_TLV_CMD_TYPE_GET_PORT_STATS)) return -EMSGSIZE; cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); if (!cmd_stats) return -EMSGSIZE; if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT, rocker_port->pport)) return -EMSGSIZE; rocker_tlv_nest_end(desc_info, cmd_stats); return 0; } static int rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port, const struct rocker_desc_info *desc_info, void *priv) { const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1]; const struct rocker_tlv *pattr; u32 pport; u64 *data = priv; int i; rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); if (!attrs[ROCKER_TLV_CMD_INFO]) return -EIO; rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX, attrs[ROCKER_TLV_CMD_INFO]); if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]) return -EIO; pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]); if (pport != rocker_port->pport) return -EIO; for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { pattr = stats_attrs[rocker_port_stats[i].type]; if (!pattr) continue; data[i] = rocker_tlv_get_u64(pattr); } return 0; } static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port, void *priv) { return rocker_cmd_exec(rocker_port, false, rocker_cmd_get_port_stats_prep, NULL, rocker_cmd_get_port_stats_ethtool_proc, priv); } static void rocker_port_get_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) { struct rocker_port *rocker_port = netdev_priv(dev); if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) { int i; for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i) data[i] = 0; } } static int rocker_port_get_sset_count(struct net_device *netdev, int sset) { switch (sset) { case ETH_SS_STATS: return ROCKER_PORT_STATS_LEN; default: return -EOPNOTSUPP; } } static const struct ethtool_ops rocker_port_ethtool_ops = { .get_drvinfo = rocker_port_get_drvinfo, .get_link = ethtool_op_get_link, .get_strings = rocker_port_get_strings, .get_ethtool_stats = rocker_port_get_stats, .get_sset_count = rocker_port_get_sset_count, .get_link_ksettings = rocker_port_get_link_ksettings, .set_link_ksettings = rocker_port_set_link_ksettings, }; /***************** * NAPI interface *****************/ static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi) { return container_of(napi, struct rocker_port, napi_tx); } static int rocker_port_poll_tx(struct napi_struct *napi, int budget) { struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi); const struct rocker *rocker = rocker_port->rocker; const struct rocker_desc_info *desc_info; u32 credits = 0; int err; /* Cleanup tx descriptors */ while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) { struct sk_buff *skb; err = rocker_desc_err(desc_info); if (err && net_ratelimit()) netdev_err(rocker_port->dev, "tx desc received with err %d\n", err); rocker_tx_desc_frags_unmap(rocker_port, desc_info); skb = rocker_desc_cookie_ptr_get(desc_info); if (err == 0) { rocker_port->dev->stats.tx_packets++; rocker_port->dev->stats.tx_bytes += skb->len; } else { rocker_port->dev->stats.tx_errors++; } dev_kfree_skb_any(skb); credits++; } if (credits && netif_queue_stopped(rocker_port->dev)) netif_wake_queue(rocker_port->dev); napi_complete(napi); rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits); return 0; } static int rocker_port_rx_proc(const struct rocker *rocker, const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info) { const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); size_t rx_len; u16 rx_flags = 0; if (!skb) return -ENOENT; rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); if (!attrs[ROCKER_TLV_RX_FRAG_LEN]) return -EINVAL; if (attrs[ROCKER_TLV_RX_FLAGS]) rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]); rocker_dma_rx_ring_skb_unmap(rocker, attrs); rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]); skb_put(skb, rx_len); skb->protocol = eth_type_trans(skb, rocker_port->dev); if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD) skb->offload_fwd_mark = 1; rocker_port->dev->stats.rx_packets++; rocker_port->dev->stats.rx_bytes += skb->len; netif_receive_skb(skb); return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info); } static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi) { return container_of(napi, struct rocker_port, napi_rx); } static int rocker_port_poll_rx(struct napi_struct *napi, int budget) { struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi); const struct rocker *rocker = rocker_port->rocker; struct rocker_desc_info *desc_info; u32 credits = 0; int err; /* Process rx descriptors */ while (credits < budget && (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) { err = rocker_desc_err(desc_info); if (err) { if (net_ratelimit()) netdev_err(rocker_port->dev, "rx desc received with err %d\n", err); } else { err = rocker_port_rx_proc(rocker, rocker_port, desc_info); if (err && net_ratelimit()) netdev_err(rocker_port->dev, "rx processing failed with err %d\n", err); } if (err) rocker_port->dev->stats.rx_errors++; rocker_desc_gen_clear(desc_info); rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info); credits++; } if (credits < budget) napi_complete_done(napi, credits); rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits); return credits; } /***************** * PCI driver ops *****************/ static void rocker_carrier_init(const struct rocker_port *rocker_port) { const struct rocker *rocker = rocker_port->rocker; u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS); bool link_up; link_up = link_status & (1 << rocker_port->pport); if (link_up) netif_carrier_on(rocker_port->dev); else netif_carrier_off(rocker_port->dev); } static void rocker_remove_ports(struct rocker *rocker) { struct rocker_port *rocker_port; int i; for (i = 0; i < rocker->port_count; i++) { rocker_port = rocker->ports[i]; if (!rocker_port) continue; rocker_world_port_fini(rocker_port); unregister_netdev(rocker_port->dev); rocker_world_port_post_fini(rocker_port); free_netdev(rocker_port->dev); } rocker_world_fini(rocker); kfree(rocker->ports); } static void rocker_port_dev_addr_init(struct rocker_port *rocker_port) { const struct rocker *rocker = rocker_port->rocker; const struct pci_dev *pdev = rocker->pdev; u8 addr[ETH_ALEN]; int err; err = rocker_cmd_get_port_settings_macaddr(rocker_port, addr); if (!err) { eth_hw_addr_set(rocker_port->dev, addr); } else { dev_warn(&pdev->dev, "failed to get mac address, using random\n"); eth_hw_addr_random(rocker_port->dev); } } #define ROCKER_PORT_MIN_MTU ETH_MIN_MTU #define ROCKER_PORT_MAX_MTU 9000 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number) { struct pci_dev *pdev = rocker->pdev; struct rocker_port *rocker_port; struct net_device *dev; int err; dev = alloc_etherdev(sizeof(struct rocker_port)); if (!dev) return -ENOMEM; SET_NETDEV_DEV(dev, &pdev->dev); rocker_port = netdev_priv(dev); rocker_port->dev = dev; rocker_port->rocker = rocker; rocker_port->port_number = port_number; rocker_port->pport = port_number + 1; err = rocker_world_check_init(rocker_port); if (err) { dev_err(&pdev->dev, "world init failed\n"); goto err_world_check_init; } rocker_port_dev_addr_init(rocker_port); dev->netdev_ops = &rocker_port_netdev_ops; dev->ethtool_ops = &rocker_port_ethtool_ops; netif_napi_add_tx(dev, &rocker_port->napi_tx, rocker_port_poll_tx); netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx); rocker_carrier_init(rocker_port); dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG; /* MTU range: 68 - 9000 */ dev->min_mtu = ROCKER_PORT_MIN_MTU; dev->max_mtu = ROCKER_PORT_MAX_MTU; err = rocker_world_port_pre_init(rocker_port); if (err) { dev_err(&pdev->dev, "port world pre-init failed\n"); goto err_world_port_pre_init; } err = register_netdev(dev); if (err) { dev_err(&pdev->dev, "register_netdev failed\n"); goto err_register_netdev; } rocker->ports[port_number] = rocker_port; err = rocker_world_port_init(rocker_port); if (err) { dev_err(&pdev->dev, "port world init failed\n"); goto err_world_port_init; } return 0; err_world_port_init: rocker->ports[port_number] = NULL; unregister_netdev(dev); err_register_netdev: rocker_world_port_post_fini(rocker_port); err_world_port_pre_init: err_world_check_init: free_netdev(dev); return err; } static int rocker_probe_ports(struct rocker *rocker) { int i; size_t alloc_size; int err; alloc_size = sizeof(struct rocker_port *) * rocker->port_count; rocker->ports = kzalloc(alloc_size, GFP_KERNEL); if (!rocker->ports) return -ENOMEM; for (i = 0; i < rocker->port_count; i++) { err = rocker_probe_port(rocker, i); if (err) goto remove_ports; } return 0; remove_ports: rocker_remove_ports(rocker); return err; } static int rocker_msix_init(struct rocker *rocker) { struct pci_dev *pdev = rocker->pdev; int msix_entries; int i; int err; msix_entries = pci_msix_vec_count(pdev); if (msix_entries < 0) return msix_entries; if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count)) return -EINVAL; rocker->msix_entries = kmalloc_array(msix_entries, sizeof(struct msix_entry), GFP_KERNEL); if (!rocker->msix_entries) return -ENOMEM; for (i = 0; i < msix_entries; i++) rocker->msix_entries[i].entry = i; err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries); if (err < 0) goto err_enable_msix; return 0; err_enable_msix: kfree(rocker->msix_entries); return err; } static void rocker_msix_fini(const struct rocker *rocker) { pci_disable_msix(rocker->pdev); kfree(rocker->msix_entries); } static bool rocker_port_dev_check(const struct net_device *dev) { return dev->netdev_ops == &rocker_port_netdev_ops; } static int rocker_switchdev_port_attr_set_event(struct net_device *netdev, struct switchdev_notifier_port_attr_info *port_attr_info) { int err; err = rocker_port_attr_set(netdev, port_attr_info->attr); port_attr_info->handled = true; return notifier_from_errno(err); } struct rocker_switchdev_event_work { struct work_struct work; struct switchdev_notifier_fdb_info fdb_info; struct rocker_port *rocker_port; unsigned long event; }; static void rocker_fdb_offload_notify(struct rocker_port *rocker_port, struct switchdev_notifier_fdb_info *recv_info) { struct switchdev_notifier_fdb_info info = {}; info.addr = recv_info->addr; info.vid = recv_info->vid; info.offloaded = true; call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, rocker_port->dev, &info.info, NULL); } static void rocker_switchdev_event_work(struct work_struct *work) { struct rocker_switchdev_event_work *switchdev_work = container_of(work, struct rocker_switchdev_event_work, work); struct rocker_port *rocker_port = switchdev_work->rocker_port; struct switchdev_notifier_fdb_info *fdb_info; int err; rtnl_lock(); switch (switchdev_work->event) { case SWITCHDEV_FDB_ADD_TO_DEVICE: fdb_info = &switchdev_work->fdb_info; if (!fdb_info->added_by_user || fdb_info->is_local) break; err = rocker_world_port_fdb_add(rocker_port, fdb_info); if (err) { netdev_dbg(rocker_port->dev, "fdb add failed err=%d\n", err); break; } rocker_fdb_offload_notify(rocker_port, fdb_info); break; case SWITCHDEV_FDB_DEL_TO_DEVICE: fdb_info = &switchdev_work->fdb_info; if (!fdb_info->added_by_user || fdb_info->is_local) break; err = rocker_world_port_fdb_del(rocker_port, fdb_info); if (err) netdev_dbg(rocker_port->dev, "fdb add failed err=%d\n", err); break; } rtnl_unlock(); kfree(switchdev_work->fdb_info.addr); kfree(switchdev_work); dev_put(rocker_port->dev); } /* called under rcu_read_lock() */ static int rocker_switchdev_event(struct notifier_block *unused, unsigned long event, void *ptr) { struct net_device *dev = switchdev_notifier_info_to_dev(ptr); struct rocker_switchdev_event_work *switchdev_work; struct switchdev_notifier_fdb_info *fdb_info = ptr; struct rocker_port *rocker_port; if (!rocker_port_dev_check(dev)) return NOTIFY_DONE; if (event == SWITCHDEV_PORT_ATTR_SET) return rocker_switchdev_port_attr_set_event(dev, ptr); rocker_port = netdev_priv(dev); switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); if (WARN_ON(!switchdev_work)) return NOTIFY_BAD; INIT_WORK(&switchdev_work->work, rocker_switchdev_event_work); switchdev_work->rocker_port = rocker_port; switchdev_work->event = event; switch (event) { case SWITCHDEV_FDB_ADD_TO_DEVICE: case SWITCHDEV_FDB_DEL_TO_DEVICE: memcpy(&switchdev_work->fdb_info, ptr, sizeof(switchdev_work->fdb_info)); switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); if (unlikely(!switchdev_work->fdb_info.addr)) { kfree(switchdev_work); return NOTIFY_BAD; } ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, fdb_info->addr); /* Take a reference on the rocker device */ dev_hold(dev); break; default: kfree(switchdev_work); return NOTIFY_DONE; } queue_work(rocker_port->rocker->rocker_owq, &switchdev_work->work); return NOTIFY_DONE; } static int rocker_switchdev_port_obj_event(unsigned long event, struct net_device *netdev, struct switchdev_notifier_port_obj_info *port_obj_info) { int err = -EOPNOTSUPP; switch (event) { case SWITCHDEV_PORT_OBJ_ADD: err = rocker_port_obj_add(netdev, port_obj_info->obj); break; case SWITCHDEV_PORT_OBJ_DEL: err = rocker_port_obj_del(netdev, port_obj_info->obj); break; } port_obj_info->handled = true; return notifier_from_errno(err); } static int rocker_switchdev_blocking_event(struct notifier_block *unused, unsigned long event, void *ptr) { struct net_device *dev = switchdev_notifier_info_to_dev(ptr); if (!rocker_port_dev_check(dev)) return NOTIFY_DONE; switch (event) { case SWITCHDEV_PORT_OBJ_ADD: case SWITCHDEV_PORT_OBJ_DEL: return rocker_switchdev_port_obj_event(event, dev, ptr); case SWITCHDEV_PORT_ATTR_SET: return rocker_switchdev_port_attr_set_event(dev, ptr); } return NOTIFY_DONE; } static struct notifier_block rocker_switchdev_notifier = { .notifier_call = rocker_switchdev_event, }; static struct notifier_block rocker_switchdev_blocking_notifier = { .notifier_call = rocker_switchdev_blocking_event, }; static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct notifier_block *nb; struct rocker *rocker; int err; rocker = kzalloc(sizeof(*rocker), GFP_KERNEL); if (!rocker) return -ENOMEM; err = pci_enable_device(pdev); if (err) { dev_err(&pdev->dev, "pci_enable_device failed\n"); goto err_pci_enable_device; } err = pci_request_regions(pdev, rocker_driver_name); if (err) { dev_err(&pdev->dev, "pci_request_regions failed\n"); goto err_pci_request_regions; } err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (err) { dev_err(&pdev->dev, "dma_set_mask failed\n"); goto err_pci_set_dma_mask; } if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) { dev_err(&pdev->dev, "invalid PCI region size\n"); err = -EINVAL; goto err_pci_resource_len_check; } rocker->hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); if (!rocker->hw_addr) { dev_err(&pdev->dev, "ioremap failed\n"); err = -EIO; goto err_ioremap; } pci_set_master(pdev); rocker->pdev = pdev; pci_set_drvdata(pdev, rocker); rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT); err = rocker_msix_init(rocker); if (err) { dev_err(&pdev->dev, "MSI-X init failed\n"); goto err_msix_init; } err = rocker_basic_hw_test(rocker); if (err) { dev_err(&pdev->dev, "basic hw test failed\n"); goto err_basic_hw_test; } rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); err = rocker_dma_rings_init(rocker); if (err) goto err_dma_rings_init; err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker_cmd_irq_handler, 0, rocker_driver_name, rocker); if (err) { dev_err(&pdev->dev, "cannot assign cmd irq\n"); goto err_request_cmd_irq; } err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker_event_irq_handler, 0, rocker_driver_name, rocker); if (err) { dev_err(&pdev->dev, "cannot assign event irq\n"); goto err_request_event_irq; } rocker->rocker_owq = alloc_ordered_workqueue(rocker_driver_name, WQ_MEM_RECLAIM); if (!rocker->rocker_owq) { err = -ENOMEM; goto err_alloc_ordered_workqueue; } err = rocker_probe_ports(rocker); if (err) { dev_err(&pdev->dev, "failed to probe ports\n"); goto err_probe_ports; } /* Only FIBs pointing to our own netdevs are programmed into * the device, so no need to pass a callback. */ rocker->fib_nb.notifier_call = rocker_router_fib_event; err = register_fib_notifier(&init_net, &rocker->fib_nb, NULL, NULL); if (err) goto err_register_fib_notifier; err = register_switchdev_notifier(&rocker_switchdev_notifier); if (err) { dev_err(&pdev->dev, "Failed to register switchdev notifier\n"); goto err_register_switchdev_notifier; } nb = &rocker_switchdev_blocking_notifier; err = register_switchdev_blocking_notifier(nb); if (err) { dev_err(&pdev->dev, "Failed to register switchdev blocking notifier\n"); goto err_register_switchdev_blocking_notifier; } rocker->hw.id = rocker_read64(rocker, SWITCH_ID); dev_info(&pdev->dev, "Rocker switch with id %*phN\n", (int)sizeof(rocker->hw.id), &rocker->hw.id); return 0; err_register_switchdev_blocking_notifier: unregister_switchdev_notifier(&rocker_switchdev_notifier); err_register_switchdev_notifier: unregister_fib_notifier(&init_net, &rocker->fib_nb); err_register_fib_notifier: rocker_remove_ports(rocker); err_probe_ports: destroy_workqueue(rocker->rocker_owq); err_alloc_ordered_workqueue: free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); err_request_event_irq: free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); err_request_cmd_irq: rocker_dma_rings_fini(rocker); err_dma_rings_init: err_basic_hw_test: rocker_msix_fini(rocker); err_msix_init: iounmap(rocker->hw_addr); err_ioremap: err_pci_resource_len_check: err_pci_set_dma_mask: pci_release_regions(pdev); err_pci_request_regions: pci_disable_device(pdev); err_pci_enable_device: kfree(rocker); return err; } static void rocker_remove(struct pci_dev *pdev) { struct rocker *rocker = pci_get_drvdata(pdev); struct notifier_block *nb; nb = &rocker_switchdev_blocking_notifier; unregister_switchdev_blocking_notifier(nb); unregister_switchdev_notifier(&rocker_switchdev_notifier); unregister_fib_notifier(&init_net, &rocker->fib_nb); rocker_remove_ports(rocker); rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); destroy_workqueue(rocker->rocker_owq); free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); rocker_dma_rings_fini(rocker); rocker_msix_fini(rocker); iounmap(rocker->hw_addr); pci_release_regions(rocker->pdev); pci_disable_device(rocker->pdev); kfree(rocker); } static struct pci_driver rocker_pci_driver = { .name = rocker_driver_name, .id_table = rocker_pci_id_table, .probe = rocker_probe, .remove = rocker_remove, }; /************************************ * Net device notifier event handler ************************************/ static bool rocker_port_dev_check_under(const struct net_device *dev, struct rocker *rocker) { struct rocker_port *rocker_port; if (!rocker_port_dev_check(dev)) return false; rocker_port = netdev_priv(dev); if (rocker_port->rocker != rocker) return false; return true; } struct rocker_walk_data { struct rocker *rocker; struct rocker_port *port; }; static int rocker_lower_dev_walk(struct net_device *lower_dev, struct netdev_nested_priv *priv) { struct rocker_walk_data *data = (struct rocker_walk_data *)priv->data; int ret = 0; if (rocker_port_dev_check_under(lower_dev, data->rocker)) { data->port = netdev_priv(lower_dev); ret = 1; } return ret; } struct rocker_port *rocker_port_dev_lower_find(struct net_device *dev, struct rocker *rocker) { struct netdev_nested_priv priv; struct rocker_walk_data data; if (rocker_port_dev_check_under(dev, rocker)) return netdev_priv(dev); data.rocker = rocker; data.port = NULL; priv.data = (void *)&data; netdev_walk_all_lower_dev(dev, rocker_lower_dev_walk, &priv); return data.port; } static int rocker_netdevice_event(struct notifier_block *unused, unsigned long event, void *ptr) { struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr); struct net_device *dev = netdev_notifier_info_to_dev(ptr); struct netdev_notifier_changeupper_info *info; struct rocker_port *rocker_port; int err; if (!rocker_port_dev_check(dev)) return NOTIFY_DONE; switch (event) { case NETDEV_CHANGEUPPER: info = ptr; if (!info->master) goto out; rocker_port = netdev_priv(dev); if (info->linking) { err = rocker_world_port_master_linked(rocker_port, info->upper_dev, extack); if (err) netdev_warn(dev, "failed to reflect master linked (err %d)\n", err); } else { err = rocker_world_port_master_unlinked(rocker_port, info->upper_dev); if (err) netdev_warn(dev, "failed to reflect master unlinked (err %d)\n", err); } } out: return NOTIFY_DONE; } static struct notifier_block rocker_netdevice_nb __read_mostly = { .notifier_call = rocker_netdevice_event, }; /************************************ * Net event notifier event handler ************************************/ static int rocker_netevent_event(struct notifier_block *unused, unsigned long event, void *ptr) { struct rocker_port *rocker_port; struct net_device *dev; struct neighbour *n = ptr; int err; switch (event) { case NETEVENT_NEIGH_UPDATE: if (n->tbl != &arp_tbl) return NOTIFY_DONE; dev = n->dev; if (!rocker_port_dev_check(dev)) return NOTIFY_DONE; rocker_port = netdev_priv(dev); err = rocker_world_port_neigh_update(rocker_port, n); if (err) netdev_warn(dev, "failed to handle neigh update (err %d)\n", err); break; } return NOTIFY_DONE; } static struct notifier_block rocker_netevent_nb __read_mostly = { .notifier_call = rocker_netevent_event, }; /*********************** * Module init and exit ***********************/ static int __init rocker_module_init(void) { int err; register_netdevice_notifier(&rocker_netdevice_nb); register_netevent_notifier(&rocker_netevent_nb); err = pci_register_driver(&rocker_pci_driver); if (err) goto err_pci_register_driver; return 0; err_pci_register_driver: unregister_netevent_notifier(&rocker_netevent_nb); unregister_netdevice_notifier(&rocker_netdevice_nb); return err; } static void __exit rocker_module_exit(void) { unregister_netevent_notifier(&rocker_netevent_nb); unregister_netdevice_notifier(&rocker_netdevice_nb); pci_unregister_driver(&rocker_pci_driver); } module_init(rocker_module_init); module_exit(rocker_module_exit); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>"); MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>"); MODULE_DESCRIPTION("Rocker switch device driver"); MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);
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