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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 09:50:04 +00:00
![Arkadi Sharshevsky](/assets/img/avatar_default.png)
The FDB add/delete are now done through the notification chain. The FDBs are synced with the bridge and there is no need for extra dumping. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
3141 lines
82 KiB
C
3141 lines
82 KiB
C
/*
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* drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
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* Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com>
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* Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <linux/sched.h>
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#include <linux/wait.h>
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#include <linux/spinlock.h>
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#include <linux/sort.h>
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#include <linux/random.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/socket.h>
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#include <linux/etherdevice.h>
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#include <linux/ethtool.h>
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#include <linux/if_ether.h>
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#include <linux/if_vlan.h>
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#include <linux/if_bridge.h>
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#include <linux/bitops.h>
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#include <linux/ctype.h>
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#include <linux/workqueue.h>
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#include <net/switchdev.h>
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#include <net/rtnetlink.h>
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#include <net/netevent.h>
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#include <net/arp.h>
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#include <net/fib_rules.h>
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#include <linux/io-64-nonatomic-lo-hi.h>
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#include <generated/utsrelease.h>
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#include "rocker_hw.h"
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#include "rocker.h"
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#include "rocker_tlv.h"
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static const char rocker_driver_name[] = "rocker";
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static const struct pci_device_id rocker_pci_id_table[] = {
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{PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
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{0, }
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};
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struct rocker_wait {
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wait_queue_head_t wait;
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bool done;
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bool nowait;
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};
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static void rocker_wait_reset(struct rocker_wait *wait)
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{
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wait->done = false;
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wait->nowait = false;
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}
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static void rocker_wait_init(struct rocker_wait *wait)
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{
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init_waitqueue_head(&wait->wait);
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rocker_wait_reset(wait);
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}
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static struct rocker_wait *rocker_wait_create(void)
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{
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struct rocker_wait *wait;
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wait = kzalloc(sizeof(*wait), GFP_KERNEL);
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if (!wait)
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return NULL;
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return wait;
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}
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static void rocker_wait_destroy(struct rocker_wait *wait)
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{
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kfree(wait);
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}
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static bool rocker_wait_event_timeout(struct rocker_wait *wait,
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unsigned long timeout)
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{
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wait_event_timeout(wait->wait, wait->done, HZ / 10);
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if (!wait->done)
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return false;
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return true;
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}
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static void rocker_wait_wake_up(struct rocker_wait *wait)
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{
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wait->done = true;
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wake_up(&wait->wait);
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}
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static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
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{
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return rocker->msix_entries[vector].vector;
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}
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static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
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{
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return rocker_msix_vector(rocker_port->rocker,
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ROCKER_MSIX_VEC_TX(rocker_port->port_number));
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}
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static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
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{
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return rocker_msix_vector(rocker_port->rocker,
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ROCKER_MSIX_VEC_RX(rocker_port->port_number));
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}
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#define rocker_write32(rocker, reg, val) \
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writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
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#define rocker_read32(rocker, reg) \
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readl((rocker)->hw_addr + (ROCKER_ ## reg))
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#define rocker_write64(rocker, reg, val) \
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writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
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#define rocker_read64(rocker, reg) \
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readq((rocker)->hw_addr + (ROCKER_ ## reg))
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/*****************************
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* HW basic testing functions
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*****************************/
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static int rocker_reg_test(const struct rocker *rocker)
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{
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const struct pci_dev *pdev = rocker->pdev;
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u64 test_reg;
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u64 rnd;
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rnd = prandom_u32();
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rnd >>= 1;
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rocker_write32(rocker, TEST_REG, rnd);
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test_reg = rocker_read32(rocker, TEST_REG);
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if (test_reg != rnd * 2) {
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dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
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test_reg, rnd * 2);
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return -EIO;
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}
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rnd = prandom_u32();
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rnd <<= 31;
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rnd |= prandom_u32();
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rocker_write64(rocker, TEST_REG64, rnd);
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test_reg = rocker_read64(rocker, TEST_REG64);
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if (test_reg != rnd * 2) {
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dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
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test_reg, rnd * 2);
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return -EIO;
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}
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return 0;
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}
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static int rocker_dma_test_one(const struct rocker *rocker,
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struct rocker_wait *wait, u32 test_type,
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dma_addr_t dma_handle, const unsigned char *buf,
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const unsigned char *expect, size_t size)
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{
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const struct pci_dev *pdev = rocker->pdev;
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int i;
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rocker_wait_reset(wait);
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rocker_write32(rocker, TEST_DMA_CTRL, test_type);
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if (!rocker_wait_event_timeout(wait, HZ / 10)) {
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dev_err(&pdev->dev, "no interrupt received within a timeout\n");
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return -EIO;
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}
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for (i = 0; i < size; i++) {
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if (buf[i] != expect[i]) {
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dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
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buf[i], i, expect[i]);
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return -EIO;
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}
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}
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return 0;
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}
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#define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
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#define ROCKER_TEST_DMA_FILL_PATTERN 0x96
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static int rocker_dma_test_offset(const struct rocker *rocker,
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struct rocker_wait *wait, int offset)
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{
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struct pci_dev *pdev = rocker->pdev;
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unsigned char *alloc;
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unsigned char *buf;
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unsigned char *expect;
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dma_addr_t dma_handle;
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int i;
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int err;
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alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
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GFP_KERNEL | GFP_DMA);
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if (!alloc)
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return -ENOMEM;
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buf = alloc + offset;
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expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
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dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
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PCI_DMA_BIDIRECTIONAL);
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if (pci_dma_mapping_error(pdev, dma_handle)) {
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err = -EIO;
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goto free_alloc;
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}
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rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
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rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
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memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
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err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
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dma_handle, buf, expect,
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ROCKER_TEST_DMA_BUF_SIZE);
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if (err)
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goto unmap;
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memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
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err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
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dma_handle, buf, expect,
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ROCKER_TEST_DMA_BUF_SIZE);
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if (err)
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goto unmap;
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prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
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for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
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expect[i] = ~buf[i];
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err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
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dma_handle, buf, expect,
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ROCKER_TEST_DMA_BUF_SIZE);
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if (err)
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goto unmap;
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unmap:
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pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
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PCI_DMA_BIDIRECTIONAL);
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free_alloc:
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kfree(alloc);
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return err;
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}
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static int rocker_dma_test(const struct rocker *rocker,
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struct rocker_wait *wait)
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{
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int i;
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int err;
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for (i = 0; i < 8; i++) {
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err = rocker_dma_test_offset(rocker, wait, i);
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if (err)
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return err;
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}
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return 0;
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}
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static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
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{
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struct rocker_wait *wait = dev_id;
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rocker_wait_wake_up(wait);
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return IRQ_HANDLED;
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}
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static int rocker_basic_hw_test(const struct rocker *rocker)
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{
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const struct pci_dev *pdev = rocker->pdev;
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struct rocker_wait wait;
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int err;
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err = rocker_reg_test(rocker);
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if (err) {
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dev_err(&pdev->dev, "reg test failed\n");
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return err;
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}
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err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
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rocker_test_irq_handler, 0,
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rocker_driver_name, &wait);
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if (err) {
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dev_err(&pdev->dev, "cannot assign test irq\n");
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return err;
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}
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rocker_wait_init(&wait);
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rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
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if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
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dev_err(&pdev->dev, "no interrupt received within a timeout\n");
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err = -EIO;
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goto free_irq;
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}
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err = rocker_dma_test(rocker, &wait);
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if (err)
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dev_err(&pdev->dev, "dma test failed\n");
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free_irq:
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free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
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return err;
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}
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/******************************************
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* DMA rings and descriptors manipulations
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******************************************/
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static u32 __pos_inc(u32 pos, size_t limit)
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{
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return ++pos == limit ? 0 : pos;
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}
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static int rocker_desc_err(const struct rocker_desc_info *desc_info)
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{
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int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
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switch (err) {
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case ROCKER_OK:
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return 0;
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case -ROCKER_ENOENT:
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return -ENOENT;
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case -ROCKER_ENXIO:
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return -ENXIO;
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case -ROCKER_ENOMEM:
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return -ENOMEM;
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case -ROCKER_EEXIST:
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return -EEXIST;
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case -ROCKER_EINVAL:
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return -EINVAL;
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case -ROCKER_EMSGSIZE:
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return -EMSGSIZE;
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case -ROCKER_ENOTSUP:
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return -EOPNOTSUPP;
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case -ROCKER_ENOBUFS:
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return -ENOBUFS;
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}
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return -EINVAL;
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}
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static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
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{
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desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
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}
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static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
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{
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u32 comp_err = desc_info->desc->comp_err;
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return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
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}
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static void *
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rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
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{
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return (void *)(uintptr_t)desc_info->desc->cookie;
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}
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static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
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void *ptr)
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{
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desc_info->desc->cookie = (uintptr_t) ptr;
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}
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static struct rocker_desc_info *
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rocker_desc_head_get(const struct rocker_dma_ring_info *info)
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{
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static struct rocker_desc_info *desc_info;
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u32 head = __pos_inc(info->head, info->size);
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desc_info = &info->desc_info[info->head];
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if (head == info->tail)
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return NULL; /* ring full */
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desc_info->tlv_size = 0;
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return desc_info;
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}
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static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
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{
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desc_info->desc->buf_size = desc_info->data_size;
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desc_info->desc->tlv_size = desc_info->tlv_size;
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}
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static void rocker_desc_head_set(const struct rocker *rocker,
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struct rocker_dma_ring_info *info,
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const struct rocker_desc_info *desc_info)
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{
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u32 head = __pos_inc(info->head, info->size);
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BUG_ON(head == info->tail);
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rocker_desc_commit(desc_info);
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info->head = head;
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rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
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}
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static struct rocker_desc_info *
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rocker_desc_tail_get(struct rocker_dma_ring_info *info)
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{
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static struct rocker_desc_info *desc_info;
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if (info->tail == info->head)
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return NULL; /* nothing to be done between head and tail */
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desc_info = &info->desc_info[info->tail];
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if (!rocker_desc_gen(desc_info))
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return NULL; /* gen bit not set, desc is not ready yet */
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info->tail = __pos_inc(info->tail, info->size);
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desc_info->tlv_size = desc_info->desc->tlv_size;
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return desc_info;
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}
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static void rocker_dma_ring_credits_set(const struct rocker *rocker,
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const struct rocker_dma_ring_info *info,
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u32 credits)
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{
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if (credits)
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rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
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}
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static unsigned long rocker_dma_ring_size_fix(size_t size)
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{
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return max(ROCKER_DMA_SIZE_MIN,
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min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
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}
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|
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static int rocker_dma_ring_create(const struct rocker *rocker,
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unsigned int type,
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size_t size,
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struct rocker_dma_ring_info *info)
|
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{
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int i;
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BUG_ON(size != rocker_dma_ring_size_fix(size));
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info->size = size;
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info->type = type;
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info->head = 0;
|
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info->tail = 0;
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info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
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GFP_KERNEL);
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if (!info->desc_info)
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return -ENOMEM;
|
|
|
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info->desc = pci_alloc_consistent(rocker->pdev,
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info->size * sizeof(*info->desc),
|
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&info->mapaddr);
|
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if (!info->desc) {
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kfree(info->desc_info);
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return -ENOMEM;
|
|
}
|
|
|
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for (i = 0; i < info->size; i++)
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info->desc_info[i].desc = &info->desc[i];
|
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|
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rocker_write32(rocker, DMA_DESC_CTRL(info->type),
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ROCKER_DMA_DESC_CTRL_RESET);
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rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
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rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
|
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|
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return 0;
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}
|
|
|
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static void rocker_dma_ring_destroy(const struct rocker *rocker,
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const struct rocker_dma_ring_info *info)
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{
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rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
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pci_free_consistent(rocker->pdev,
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info->size * sizeof(struct rocker_desc),
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info->desc, info->mapaddr);
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kfree(info->desc_info);
|
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}
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|
|
static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
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struct rocker_dma_ring_info *info)
|
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{
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int i;
|
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|
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BUG_ON(info->head || info->tail);
|
|
|
|
/* When ring is consumer, we need to advance head for each desc.
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* That tells hw that the desc is ready to be used by it.
|
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*/
|
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for (i = 0; i < info->size - 1; i++)
|
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rocker_desc_head_set(rocker, info, &info->desc_info[i]);
|
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rocker_desc_commit(&info->desc_info[i]);
|
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}
|
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|
|
static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
|
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const struct rocker_dma_ring_info *info,
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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 = pci_map_single(pdev, buf, buf_size, direction);
|
|
if (pci_dma_mapping_error(pdev, 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];
|
|
|
|
pci_unmap_single(pdev, 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;
|
|
pci_unmap_single(pdev, 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,
|
|
PCI_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,
|
|
PCI_DMA_FROMDEVICE, 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_ring_bufs_free(rocker, &rocker->cmd_ring,
|
|
PCI_DMA_BIDIRECTIONAL);
|
|
err_dma_cmd_ring_waits_alloc:
|
|
rocker_dma_cmd_ring_waits_free(rocker);
|
|
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,
|
|
PCI_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,
|
|
PCI_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 = pci_map_single(pdev, skb->data, buf_len,
|
|
PCI_DMA_FROMDEVICE);
|
|
if (pci_dma_mapping_error(pdev, 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:
|
|
pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
|
|
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]);
|
|
pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
|
|
}
|
|
|
|
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,
|
|
PCI_DMA_TODEVICE,
|
|
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,
|
|
PCI_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,
|
|
PCI_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,
|
|
PCI_DMA_TODEVICE);
|
|
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,
|
|
PCI_DMA_BIDIRECTIONAL);
|
|
rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
|
|
rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
|
|
PCI_DMA_TODEVICE);
|
|
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 switchdev_trans *trans)
|
|
{
|
|
struct rocker_world_ops *wops = rocker_port->rocker->wops;
|
|
|
|
if (!wops->port_attr_stp_state_set)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (switchdev_trans_ph_prepare(trans))
|
|
return 0;
|
|
|
|
return wops->port_attr_stp_state_set(rocker_port, state);
|
|
}
|
|
|
|
static int
|
|
rocker_world_port_attr_bridge_flags_set(struct rocker_port *rocker_port,
|
|
unsigned long brport_flags,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
struct rocker_world_ops *wops = rocker_port->rocker->wops;
|
|
|
|
if (!wops->port_attr_bridge_flags_set)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (switchdev_trans_ph_prepare(trans))
|
|
return 0;
|
|
|
|
return wops->port_attr_bridge_flags_set(rocker_port, brport_flags,
|
|
trans);
|
|
}
|
|
|
|
static int
|
|
rocker_world_port_attr_bridge_flags_get(const struct rocker_port *rocker_port,
|
|
unsigned long *p_brport_flags)
|
|
{
|
|
struct rocker_world_ops *wops = rocker_port->rocker->wops;
|
|
|
|
if (!wops->port_attr_bridge_flags_get)
|
|
return -EOPNOTSUPP;
|
|
return wops->port_attr_bridge_flags_get(rocker_port, p_brport_flags);
|
|
}
|
|
|
|
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_bridge_ageing_time_set(struct rocker_port *rocker_port,
|
|
u32 ageing_time,
|
|
struct switchdev_trans *trans)
|
|
|
|
{
|
|
struct rocker_world_ops *wops = rocker_port->rocker->wops;
|
|
|
|
if (!wops->port_attr_bridge_ageing_time_set)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (switchdev_trans_ph_prepare(trans))
|
|
return 0;
|
|
|
|
return wops->port_attr_bridge_ageing_time_set(rocker_port, ageing_time,
|
|
trans);
|
|
}
|
|
|
|
static int
|
|
rocker_world_port_obj_vlan_add(struct rocker_port *rocker_port,
|
|
const struct switchdev_obj_port_vlan *vlan,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
struct rocker_world_ops *wops = rocker_port->rocker->wops;
|
|
|
|
if (!wops->port_obj_vlan_add)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (switchdev_trans_ph_prepare(trans))
|
|
return 0;
|
|
|
|
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 (!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 rocker_world_ops *wops = rocker_port->rocker->wops;
|
|
|
|
if (!wops->port_master_linked)
|
|
return -EOPNOTSUPP;
|
|
return wops->port_master_linked(rocker_port, master);
|
|
}
|
|
|
|
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]);
|
|
pci_unmap_single(pdev, 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 = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
|
|
if (unlikely(pci_dma_mapping_error(pdev, 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:
|
|
pci_unmap_single(pdev, 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;
|
|
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
|
|
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);
|
|
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 int rocker_port_change_proto_down(struct net_device *dev,
|
|
bool proto_down)
|
|
{
|
|
struct rocker_port *rocker_port = netdev_priv(dev);
|
|
|
|
if (rocker_port->dev->flags & IFF_UP)
|
|
rocker_port_set_enable(rocker_port, !proto_down);
|
|
rocker_port->dev->proto_down = proto_down;
|
|
return 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 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_change_proto_down = rocker_port_change_proto_down,
|
|
.ndo_neigh_destroy = rocker_port_neigh_destroy,
|
|
};
|
|
|
|
/********************
|
|
* swdev interface
|
|
********************/
|
|
|
|
static int rocker_port_attr_get(struct net_device *dev,
|
|
struct switchdev_attr *attr)
|
|
{
|
|
const struct rocker_port *rocker_port = netdev_priv(dev);
|
|
const struct rocker *rocker = rocker_port->rocker;
|
|
int err = 0;
|
|
|
|
switch (attr->id) {
|
|
case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
|
|
attr->u.ppid.id_len = sizeof(rocker->hw.id);
|
|
memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
|
|
break;
|
|
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
|
|
err = rocker_world_port_attr_bridge_flags_get(rocker_port,
|
|
&attr->u.brport_flags);
|
|
break;
|
|
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
|
|
err = rocker_world_port_attr_bridge_flags_support_get(rocker_port,
|
|
&attr->u.brport_flags_support);
|
|
break;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int rocker_port_attr_set(struct net_device *dev,
|
|
const struct switchdev_attr *attr,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
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,
|
|
trans);
|
|
break;
|
|
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
|
|
err = rocker_world_port_attr_bridge_flags_set(rocker_port,
|
|
attr->u.brport_flags,
|
|
trans);
|
|
break;
|
|
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
|
|
err = rocker_world_port_attr_bridge_ageing_time_set(rocker_port,
|
|
attr->u.ageing_time,
|
|
trans);
|
|
break;
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int rocker_port_obj_add(struct net_device *dev,
|
|
const struct switchdev_obj *obj,
|
|
struct switchdev_trans *trans)
|
|
{
|
|
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),
|
|
trans);
|
|
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;
|
|
}
|
|
|
|
static const struct switchdev_ops rocker_port_switchdev_ops = {
|
|
.switchdev_port_attr_get = rocker_port_attr_get,
|
|
.switchdev_port_attr_set = rocker_port_attr_set,
|
|
.switchdev_port_obj_add = rocker_port_obj_add,
|
|
.switchdev_port_obj_del = rocker_port_obj_del,
|
|
};
|
|
|
|
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_ADD:
|
|
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: /* fall through */
|
|
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;
|
|
|
|
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_ADD: /* fall through */
|
|
case FIB_EVENT_ENTRY_DEL:
|
|
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: /* fall through */
|
|
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)
|
|
{
|
|
strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
|
|
strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
|
|
}
|
|
|
|
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;
|
|
int err;
|
|
|
|
err = rocker_cmd_get_port_settings_macaddr(rocker_port,
|
|
rocker_port->dev->dev_addr);
|
|
if (err) {
|
|
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;
|
|
dev->switchdev_ops = &rocker_port_switchdev_ops;
|
|
netif_tx_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
|
|
NAPI_POLL_WEIGHT);
|
|
netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
|
|
NAPI_POLL_WEIGHT);
|
|
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;
|
|
}
|
|
|
|
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;
|
|
call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED,
|
|
rocker_port->dev, &info.info);
|
|
}
|
|
|
|
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;
|
|
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;
|
|
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;
|
|
|
|
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: /* fall through */
|
|
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);
|
|
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 struct notifier_block rocker_switchdev_notifier = {
|
|
.notifier_call = rocker_switchdev_event,
|
|
};
|
|
|
|
static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|
{
|
|
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 = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
|
|
if (!err) {
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
|
|
if (err) {
|
|
dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
|
|
goto err_pci_set_dma_mask;
|
|
}
|
|
} else {
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (err) {
|
|
dev_err(&pdev->dev, "pci_set_dma_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;
|
|
}
|
|
|
|
/* 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(&rocker->fib_nb, 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;
|
|
}
|
|
|
|
rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
|
|
|
|
err = rocker_probe_ports(rocker);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "failed to probe ports\n");
|
|
goto err_probe_ports;
|
|
}
|
|
|
|
dev_info(&pdev->dev, "Rocker switch with id %*phN\n",
|
|
(int)sizeof(rocker->hw.id), &rocker->hw.id);
|
|
|
|
return 0;
|
|
|
|
err_probe_ports:
|
|
unregister_switchdev_notifier(&rocker_switchdev_notifier);
|
|
err_register_switchdev_notifier:
|
|
unregister_fib_notifier(&rocker->fib_nb);
|
|
err_register_fib_notifier:
|
|
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);
|
|
|
|
rocker_remove_ports(rocker);
|
|
unregister_switchdev_notifier(&rocker_switchdev_notifier);
|
|
unregister_fib_notifier(&rocker->fib_nb);
|
|
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, void *_data)
|
|
{
|
|
struct rocker_walk_data *data = _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 rocker_walk_data data;
|
|
|
|
if (rocker_port_dev_check_under(dev, rocker))
|
|
return netdev_priv(dev);
|
|
|
|
data.rocker = rocker;
|
|
data.port = NULL;
|
|
netdev_walk_all_lower_dev(dev, rocker_lower_dev_walk, &data);
|
|
|
|
return data.port;
|
|
}
|
|
|
|
static int rocker_netdevice_event(struct notifier_block *unused,
|
|
unsigned long event, void *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);
|
|
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);
|