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- /*
- * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
- * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
- * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/pci.h>
- #include <linux/interrupt.h>
- #include <linux/sched.h>
- #include <linux/wait.h>
- #include <linux/spinlock.h>
- #include <linux/hashtable.h>
- #include <linux/crc32.h>
- #include <linux/sort.h>
- #include <linux/random.h>
- #include <linux/netdevice.h>
- #include <linux/inetdevice.h>
- #include <linux/skbuff.h>
- #include <linux/socket.h>
- #include <linux/etherdevice.h>
- #include <linux/ethtool.h>
- #include <linux/if_ether.h>
- #include <linux/if_vlan.h>
- #include <linux/if_bridge.h>
- #include <linux/bitops.h>
- #include <linux/ctype.h>
- #include <net/switchdev.h>
- #include <net/rtnetlink.h>
- #include <net/ip_fib.h>
- #include <net/netevent.h>
- #include <net/arp.h>
- #include <linux/io-64-nonatomic-lo-hi.h>
- #include <generated/utsrelease.h>
- #include "rocker.h"
- static const char rocker_driver_name[] = "rocker";
- static const struct pci_device_id rocker_pci_id_table[] = {
- {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
- {0, }
- };
- struct rocker_flow_tbl_key {
- u32 priority;
- enum rocker_of_dpa_table_id tbl_id;
- union {
- struct {
- u32 in_pport;
- u32 in_pport_mask;
- enum rocker_of_dpa_table_id goto_tbl;
- } ig_port;
- struct {
- u32 in_pport;
- __be16 vlan_id;
- __be16 vlan_id_mask;
- enum rocker_of_dpa_table_id goto_tbl;
- bool untagged;
- __be16 new_vlan_id;
- } vlan;
- struct {
- u32 in_pport;
- u32 in_pport_mask;
- __be16 eth_type;
- u8 eth_dst[ETH_ALEN];
- u8 eth_dst_mask[ETH_ALEN];
- __be16 vlan_id;
- __be16 vlan_id_mask;
- enum rocker_of_dpa_table_id goto_tbl;
- bool copy_to_cpu;
- } term_mac;
- struct {
- __be16 eth_type;
- __be32 dst4;
- __be32 dst4_mask;
- enum rocker_of_dpa_table_id goto_tbl;
- u32 group_id;
- } ucast_routing;
- struct {
- u8 eth_dst[ETH_ALEN];
- u8 eth_dst_mask[ETH_ALEN];
- int has_eth_dst;
- int has_eth_dst_mask;
- __be16 vlan_id;
- u32 tunnel_id;
- enum rocker_of_dpa_table_id goto_tbl;
- u32 group_id;
- bool copy_to_cpu;
- } bridge;
- struct {
- u32 in_pport;
- u32 in_pport_mask;
- u8 eth_src[ETH_ALEN];
- u8 eth_src_mask[ETH_ALEN];
- u8 eth_dst[ETH_ALEN];
- u8 eth_dst_mask[ETH_ALEN];
- __be16 eth_type;
- __be16 vlan_id;
- __be16 vlan_id_mask;
- u8 ip_proto;
- u8 ip_proto_mask;
- u8 ip_tos;
- u8 ip_tos_mask;
- u32 group_id;
- } acl;
- };
- };
- struct rocker_flow_tbl_entry {
- struct hlist_node entry;
- u32 cmd;
- u64 cookie;
- struct rocker_flow_tbl_key key;
- size_t key_len;
- u32 key_crc32; /* key */
- };
- struct rocker_group_tbl_entry {
- struct hlist_node entry;
- u32 cmd;
- u32 group_id; /* key */
- u16 group_count;
- u32 *group_ids;
- union {
- struct {
- u8 pop_vlan;
- } l2_interface;
- struct {
- u8 eth_src[ETH_ALEN];
- u8 eth_dst[ETH_ALEN];
- __be16 vlan_id;
- u32 group_id;
- } l2_rewrite;
- struct {
- u8 eth_src[ETH_ALEN];
- u8 eth_dst[ETH_ALEN];
- __be16 vlan_id;
- bool ttl_check;
- u32 group_id;
- } l3_unicast;
- };
- };
- struct rocker_fdb_tbl_entry {
- struct hlist_node entry;
- u32 key_crc32; /* key */
- bool learned;
- unsigned long touched;
- struct rocker_fdb_tbl_key {
- struct rocker_port *rocker_port;
- u8 addr[ETH_ALEN];
- __be16 vlan_id;
- } key;
- };
- struct rocker_internal_vlan_tbl_entry {
- struct hlist_node entry;
- int ifindex; /* key */
- u32 ref_count;
- __be16 vlan_id;
- };
- struct rocker_neigh_tbl_entry {
- struct hlist_node entry;
- __be32 ip_addr; /* key */
- struct net_device *dev;
- u32 ref_count;
- u32 index;
- u8 eth_dst[ETH_ALEN];
- bool ttl_check;
- };
- struct rocker_desc_info {
- char *data; /* mapped */
- size_t data_size;
- size_t tlv_size;
- struct rocker_desc *desc;
- dma_addr_t mapaddr;
- };
- struct rocker_dma_ring_info {
- size_t size;
- u32 head;
- u32 tail;
- struct rocker_desc *desc; /* mapped */
- dma_addr_t mapaddr;
- struct rocker_desc_info *desc_info;
- unsigned int type;
- };
- struct rocker;
- enum {
- ROCKER_CTRL_LINK_LOCAL_MCAST,
- ROCKER_CTRL_LOCAL_ARP,
- ROCKER_CTRL_IPV4_MCAST,
- ROCKER_CTRL_IPV6_MCAST,
- ROCKER_CTRL_DFLT_BRIDGING,
- ROCKER_CTRL_DFLT_OVS,
- ROCKER_CTRL_MAX,
- };
- #define ROCKER_INTERNAL_VLAN_ID_BASE 0x0f00
- #define ROCKER_N_INTERNAL_VLANS 255
- #define ROCKER_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
- #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
- struct rocker_port {
- struct net_device *dev;
- struct net_device *bridge_dev;
- struct rocker *rocker;
- unsigned int port_number;
- u32 pport;
- __be16 internal_vlan_id;
- int stp_state;
- u32 brport_flags;
- unsigned long ageing_time;
- bool ctrls[ROCKER_CTRL_MAX];
- unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
- struct napi_struct napi_tx;
- struct napi_struct napi_rx;
- struct rocker_dma_ring_info tx_ring;
- struct rocker_dma_ring_info rx_ring;
- };
- struct rocker {
- struct pci_dev *pdev;
- u8 __iomem *hw_addr;
- struct msix_entry *msix_entries;
- unsigned int port_count;
- struct rocker_port **ports;
- struct {
- u64 id;
- } hw;
- unsigned long ageing_time;
- spinlock_t cmd_ring_lock; /* for cmd ring accesses */
- struct rocker_dma_ring_info cmd_ring;
- struct rocker_dma_ring_info event_ring;
- DECLARE_HASHTABLE(flow_tbl, 16);
- spinlock_t flow_tbl_lock; /* for flow tbl accesses */
- u64 flow_tbl_next_cookie;
- DECLARE_HASHTABLE(group_tbl, 16);
- spinlock_t group_tbl_lock; /* for group tbl accesses */
- struct timer_list fdb_cleanup_timer;
- DECLARE_HASHTABLE(fdb_tbl, 16);
- spinlock_t fdb_tbl_lock; /* for fdb tbl accesses */
- unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
- DECLARE_HASHTABLE(internal_vlan_tbl, 8);
- spinlock_t internal_vlan_tbl_lock; /* for vlan tbl accesses */
- DECLARE_HASHTABLE(neigh_tbl, 16);
- spinlock_t neigh_tbl_lock; /* for neigh tbl accesses */
- u32 neigh_tbl_next_index;
- };
- static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
- static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
- static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
- static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
- static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
- static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
- static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
- static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
- static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
- /* Rocker priority levels for flow table entries. Higher
- * priority match takes precedence over lower priority match.
- */
- enum {
- ROCKER_PRIORITY_UNKNOWN = 0,
- ROCKER_PRIORITY_IG_PORT = 1,
- ROCKER_PRIORITY_VLAN = 1,
- ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
- ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
- ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
- ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
- ROCKER_PRIORITY_BRIDGING_VLAN = 3,
- ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
- ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
- ROCKER_PRIORITY_BRIDGING_TENANT = 3,
- ROCKER_PRIORITY_ACL_CTRL = 3,
- ROCKER_PRIORITY_ACL_NORMAL = 2,
- ROCKER_PRIORITY_ACL_DFLT = 1,
- };
- static bool rocker_vlan_id_is_internal(__be16 vlan_id)
- {
- u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
- u16 end = 0xffe;
- u16 _vlan_id = ntohs(vlan_id);
- return (_vlan_id >= start && _vlan_id <= end);
- }
- static __be16 rocker_port_vid_to_vlan(const struct rocker_port *rocker_port,
- u16 vid, bool *pop_vlan)
- {
- __be16 vlan_id;
- if (pop_vlan)
- *pop_vlan = false;
- vlan_id = htons(vid);
- if (!vlan_id) {
- vlan_id = rocker_port->internal_vlan_id;
- if (pop_vlan)
- *pop_vlan = true;
- }
- return vlan_id;
- }
- static u16 rocker_port_vlan_to_vid(const struct rocker_port *rocker_port,
- __be16 vlan_id)
- {
- if (rocker_vlan_id_is_internal(vlan_id))
- return 0;
- return ntohs(vlan_id);
- }
- static bool rocker_port_is_bridged(const struct rocker_port *rocker_port)
- {
- return rocker_port->bridge_dev &&
- netif_is_bridge_master(rocker_port->bridge_dev);
- }
- static bool rocker_port_is_ovsed(const struct rocker_port *rocker_port)
- {
- return rocker_port->bridge_dev &&
- netif_is_ovs_master(rocker_port->bridge_dev);
- }
- #define ROCKER_OP_FLAG_REMOVE BIT(0)
- #define ROCKER_OP_FLAG_NOWAIT BIT(1)
- #define ROCKER_OP_FLAG_LEARNED BIT(2)
- #define ROCKER_OP_FLAG_REFRESH BIT(3)
- static void *__rocker_port_mem_alloc(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- size_t size)
- {
- struct switchdev_trans_item *elem = NULL;
- gfp_t gfp_flags = (flags & ROCKER_OP_FLAG_NOWAIT) ?
- GFP_ATOMIC : GFP_KERNEL;
- /* If in transaction prepare phase, allocate the memory
- * and enqueue it on a transaction. If in transaction
- * commit phase, dequeue the memory from the transaction
- * rather than re-allocating the memory. The idea is the
- * driver code paths for prepare and commit are identical
- * so the memory allocated in the prepare phase is the
- * memory used in the commit phase.
- */
- if (!trans) {
- elem = kzalloc(size + sizeof(*elem), gfp_flags);
- } else if (switchdev_trans_ph_prepare(trans)) {
- elem = kzalloc(size + sizeof(*elem), gfp_flags);
- if (!elem)
- return NULL;
- switchdev_trans_item_enqueue(trans, elem, kfree, elem);
- } else {
- elem = switchdev_trans_item_dequeue(trans);
- }
- return elem ? elem + 1 : NULL;
- }
- static void *rocker_port_kzalloc(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- size_t size)
- {
- return __rocker_port_mem_alloc(rocker_port, trans, flags, size);
- }
- static void *rocker_port_kcalloc(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- size_t n, size_t size)
- {
- return __rocker_port_mem_alloc(rocker_port, trans, flags, n * size);
- }
- static void rocker_port_kfree(struct switchdev_trans *trans, const void *mem)
- {
- struct switchdev_trans_item *elem;
- /* Frees are ignored if in transaction prepare phase. The
- * memory remains on the per-port list until freed in the
- * commit phase.
- */
- if (switchdev_trans_ph_prepare(trans))
- return;
- elem = (struct switchdev_trans_item *) mem - 1;
- kfree(elem);
- }
- struct rocker_wait {
- wait_queue_head_t wait;
- bool done;
- bool nowait;
- };
- static void rocker_wait_reset(struct rocker_wait *wait)
- {
- wait->done = false;
- wait->nowait = false;
- }
- static void rocker_wait_init(struct rocker_wait *wait)
- {
- init_waitqueue_head(&wait->wait);
- rocker_wait_reset(wait);
- }
- static struct rocker_wait *rocker_wait_create(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- int flags)
- {
- struct rocker_wait *wait;
- wait = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*wait));
- if (!wait)
- return NULL;
- rocker_wait_init(wait);
- return wait;
- }
- static void rocker_wait_destroy(struct switchdev_trans *trans,
- struct rocker_wait *wait)
- {
- rocker_port_kfree(trans, wait);
- }
- static bool rocker_wait_event_timeout(struct rocker_wait *wait,
- unsigned long timeout)
- {
- wait_event_timeout(wait->wait, wait->done, HZ / 10);
- if (!wait->done)
- return false;
- return true;
- }
- static void rocker_wait_wake_up(struct rocker_wait *wait)
- {
- wait->done = true;
- wake_up(&wait->wait);
- }
- static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
- {
- return rocker->msix_entries[vector].vector;
- }
- static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
- {
- return rocker_msix_vector(rocker_port->rocker,
- ROCKER_MSIX_VEC_TX(rocker_port->port_number));
- }
- static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
- {
- return rocker_msix_vector(rocker_port->rocker,
- ROCKER_MSIX_VEC_RX(rocker_port->port_number));
- }
- #define rocker_write32(rocker, reg, val) \
- writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
- #define rocker_read32(rocker, reg) \
- readl((rocker)->hw_addr + (ROCKER_ ## reg))
- #define rocker_write64(rocker, reg, val) \
- writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
- #define rocker_read64(rocker, reg) \
- readq((rocker)->hw_addr + (ROCKER_ ## reg))
- /*****************************
- * HW basic testing functions
- *****************************/
- static int rocker_reg_test(const struct rocker *rocker)
- {
- const struct pci_dev *pdev = rocker->pdev;
- u64 test_reg;
- u64 rnd;
- rnd = prandom_u32();
- rnd >>= 1;
- rocker_write32(rocker, TEST_REG, rnd);
- test_reg = rocker_read32(rocker, TEST_REG);
- if (test_reg != rnd * 2) {
- dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
- test_reg, rnd * 2);
- return -EIO;
- }
- rnd = prandom_u32();
- rnd <<= 31;
- rnd |= prandom_u32();
- rocker_write64(rocker, TEST_REG64, rnd);
- test_reg = rocker_read64(rocker, TEST_REG64);
- if (test_reg != rnd * 2) {
- dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
- test_reg, rnd * 2);
- return -EIO;
- }
- return 0;
- }
- static int rocker_dma_test_one(const struct rocker *rocker,
- struct rocker_wait *wait, u32 test_type,
- dma_addr_t dma_handle, const unsigned char *buf,
- const unsigned char *expect, size_t size)
- {
- const struct pci_dev *pdev = rocker->pdev;
- int i;
- rocker_wait_reset(wait);
- rocker_write32(rocker, TEST_DMA_CTRL, test_type);
- if (!rocker_wait_event_timeout(wait, HZ / 10)) {
- dev_err(&pdev->dev, "no interrupt received within a timeout\n");
- return -EIO;
- }
- for (i = 0; i < size; i++) {
- if (buf[i] != expect[i]) {
- dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
- buf[i], i, expect[i]);
- return -EIO;
- }
- }
- return 0;
- }
- #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
- #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
- static int rocker_dma_test_offset(const struct rocker *rocker,
- struct rocker_wait *wait, int offset)
- {
- struct pci_dev *pdev = rocker->pdev;
- unsigned char *alloc;
- unsigned char *buf;
- unsigned char *expect;
- dma_addr_t dma_handle;
- int i;
- int err;
- alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
- GFP_KERNEL | GFP_DMA);
- if (!alloc)
- return -ENOMEM;
- buf = alloc + offset;
- expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
- dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
- PCI_DMA_BIDIRECTIONAL);
- if (pci_dma_mapping_error(pdev, dma_handle)) {
- err = -EIO;
- goto free_alloc;
- }
- rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
- rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
- memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
- err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
- dma_handle, buf, expect,
- ROCKER_TEST_DMA_BUF_SIZE);
- if (err)
- goto unmap;
- memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
- err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
- dma_handle, buf, expect,
- ROCKER_TEST_DMA_BUF_SIZE);
- if (err)
- goto unmap;
- prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
- for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
- expect[i] = ~buf[i];
- err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
- dma_handle, buf, expect,
- ROCKER_TEST_DMA_BUF_SIZE);
- if (err)
- goto unmap;
- unmap:
- pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
- PCI_DMA_BIDIRECTIONAL);
- free_alloc:
- kfree(alloc);
- return err;
- }
- static int rocker_dma_test(const struct rocker *rocker,
- struct rocker_wait *wait)
- {
- int i;
- int err;
- for (i = 0; i < 8; i++) {
- err = rocker_dma_test_offset(rocker, wait, i);
- if (err)
- return err;
- }
- return 0;
- }
- static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
- {
- struct rocker_wait *wait = dev_id;
- rocker_wait_wake_up(wait);
- return IRQ_HANDLED;
- }
- static int rocker_basic_hw_test(const struct rocker *rocker)
- {
- const struct pci_dev *pdev = rocker->pdev;
- struct rocker_wait wait;
- int err;
- err = rocker_reg_test(rocker);
- if (err) {
- dev_err(&pdev->dev, "reg test failed\n");
- return err;
- }
- err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
- rocker_test_irq_handler, 0,
- rocker_driver_name, &wait);
- if (err) {
- dev_err(&pdev->dev, "cannot assign test irq\n");
- return err;
- }
- rocker_wait_init(&wait);
- rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
- if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
- dev_err(&pdev->dev, "no interrupt received within a timeout\n");
- err = -EIO;
- goto free_irq;
- }
- err = rocker_dma_test(rocker, &wait);
- if (err)
- dev_err(&pdev->dev, "dma test failed\n");
- free_irq:
- free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
- return err;
- }
- /******
- * TLV
- ******/
- #define ROCKER_TLV_ALIGNTO 8U
- #define ROCKER_TLV_ALIGN(len) \
- (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
- #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
- /* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
- * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
- * | Header | Pad | Payload | Pad |
- * | (struct rocker_tlv) | ing | | ing |
- * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
- * <--------------------------- tlv->len -------------------------->
- */
- static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
- int *remaining)
- {
- int totlen = ROCKER_TLV_ALIGN(tlv->len);
- *remaining -= totlen;
- return (struct rocker_tlv *) ((char *) tlv + totlen);
- }
- static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
- {
- return remaining >= (int) ROCKER_TLV_HDRLEN &&
- tlv->len >= ROCKER_TLV_HDRLEN &&
- tlv->len <= remaining;
- }
- #define rocker_tlv_for_each(pos, head, len, rem) \
- for (pos = head, rem = len; \
- rocker_tlv_ok(pos, rem); \
- pos = rocker_tlv_next(pos, &(rem)))
- #define rocker_tlv_for_each_nested(pos, tlv, rem) \
- rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \
- rocker_tlv_len(tlv), rem)
- static int rocker_tlv_attr_size(int payload)
- {
- return ROCKER_TLV_HDRLEN + payload;
- }
- static int rocker_tlv_total_size(int payload)
- {
- return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
- }
- static int rocker_tlv_padlen(int payload)
- {
- return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
- }
- static int rocker_tlv_type(const struct rocker_tlv *tlv)
- {
- return tlv->type;
- }
- static void *rocker_tlv_data(const struct rocker_tlv *tlv)
- {
- return (char *) tlv + ROCKER_TLV_HDRLEN;
- }
- static int rocker_tlv_len(const struct rocker_tlv *tlv)
- {
- return tlv->len - ROCKER_TLV_HDRLEN;
- }
- static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
- {
- return *(u8 *) rocker_tlv_data(tlv);
- }
- static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
- {
- return *(u16 *) rocker_tlv_data(tlv);
- }
- static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
- {
- return *(__be16 *) rocker_tlv_data(tlv);
- }
- static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
- {
- return *(u32 *) rocker_tlv_data(tlv);
- }
- static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
- {
- return *(u64 *) rocker_tlv_data(tlv);
- }
- static void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype,
- const char *buf, int buf_len)
- {
- const struct rocker_tlv *tlv;
- const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
- int rem;
- memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
- rocker_tlv_for_each(tlv, head, buf_len, rem) {
- u32 type = rocker_tlv_type(tlv);
- if (type > 0 && type <= maxtype)
- tb[type] = tlv;
- }
- }
- static void rocker_tlv_parse_nested(const struct rocker_tlv **tb, int maxtype,
- const struct rocker_tlv *tlv)
- {
- rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
- rocker_tlv_len(tlv));
- }
- static void rocker_tlv_parse_desc(const struct rocker_tlv **tb, int maxtype,
- const struct rocker_desc_info *desc_info)
- {
- rocker_tlv_parse(tb, maxtype, desc_info->data,
- desc_info->desc->tlv_size);
- }
- static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
- {
- return (struct rocker_tlv *) ((char *) desc_info->data +
- desc_info->tlv_size);
- }
- static int rocker_tlv_put(struct rocker_desc_info *desc_info,
- int attrtype, int attrlen, const void *data)
- {
- int tail_room = desc_info->data_size - desc_info->tlv_size;
- int total_size = rocker_tlv_total_size(attrlen);
- struct rocker_tlv *tlv;
- if (unlikely(tail_room < total_size))
- return -EMSGSIZE;
- tlv = rocker_tlv_start(desc_info);
- desc_info->tlv_size += total_size;
- tlv->type = attrtype;
- tlv->len = rocker_tlv_attr_size(attrlen);
- memcpy(rocker_tlv_data(tlv), data, attrlen);
- memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
- return 0;
- }
- static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
- int attrtype, u8 value)
- {
- u8 tmp = value; /* work around GCC PR81715 */
- return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &tmp);
- }
- static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
- int attrtype, u16 value)
- {
- u16 tmp = value;
- return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &tmp);
- }
- static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
- int attrtype, __be16 value)
- {
- __be16 tmp = value;
- return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &tmp);
- }
- static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
- int attrtype, u32 value)
- {
- u32 tmp = value;
- return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &tmp);
- }
- static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
- int attrtype, __be32 value)
- {
- __be32 tmp = value;
- return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &tmp);
- }
- static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
- int attrtype, u64 value)
- {
- u64 tmp = value;
- return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &tmp);
- }
- static struct rocker_tlv *
- rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
- {
- struct rocker_tlv *start = rocker_tlv_start(desc_info);
- if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
- return NULL;
- return start;
- }
- static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
- struct rocker_tlv *start)
- {
- start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
- }
- static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
- const struct rocker_tlv *start)
- {
- desc_info->tlv_size = (const char *) start - desc_info->data;
- }
- /******************************************
- * DMA rings and descriptors manipulations
- ******************************************/
- static u32 __pos_inc(u32 pos, size_t limit)
- {
- return ++pos == limit ? 0 : pos;
- }
- static int rocker_desc_err(const struct rocker_desc_info *desc_info)
- {
- int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
- switch (err) {
- case ROCKER_OK:
- return 0;
- case -ROCKER_ENOENT:
- return -ENOENT;
- case -ROCKER_ENXIO:
- return -ENXIO;
- case -ROCKER_ENOMEM:
- return -ENOMEM;
- case -ROCKER_EEXIST:
- return -EEXIST;
- case -ROCKER_EINVAL:
- return -EINVAL;
- case -ROCKER_EMSGSIZE:
- return -EMSGSIZE;
- case -ROCKER_ENOTSUP:
- return -EOPNOTSUPP;
- case -ROCKER_ENOBUFS:
- return -ENOBUFS;
- }
- return -EINVAL;
- }
- static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
- {
- desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
- }
- static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
- {
- u32 comp_err = desc_info->desc->comp_err;
- return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
- }
- static void *rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
- {
- return (void *)(uintptr_t)desc_info->desc->cookie;
- }
- static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
- void *ptr)
- {
- desc_info->desc->cookie = (uintptr_t) ptr;
- }
- static struct rocker_desc_info *
- rocker_desc_head_get(const struct rocker_dma_ring_info *info)
- {
- static struct rocker_desc_info *desc_info;
- u32 head = __pos_inc(info->head, info->size);
- desc_info = &info->desc_info[info->head];
- if (head == info->tail)
- return NULL; /* ring full */
- desc_info->tlv_size = 0;
- return desc_info;
- }
- static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
- {
- desc_info->desc->buf_size = desc_info->data_size;
- desc_info->desc->tlv_size = desc_info->tlv_size;
- }
- static void rocker_desc_head_set(const struct rocker *rocker,
- struct rocker_dma_ring_info *info,
- const struct rocker_desc_info *desc_info)
- {
- u32 head = __pos_inc(info->head, info->size);
- BUG_ON(head == info->tail);
- rocker_desc_commit(desc_info);
- info->head = head;
- rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
- }
- static struct rocker_desc_info *
- rocker_desc_tail_get(struct rocker_dma_ring_info *info)
- {
- static struct rocker_desc_info *desc_info;
- if (info->tail == info->head)
- return NULL; /* nothing to be done between head and tail */
- desc_info = &info->desc_info[info->tail];
- if (!rocker_desc_gen(desc_info))
- return NULL; /* gen bit not set, desc is not ready yet */
- info->tail = __pos_inc(info->tail, info->size);
- desc_info->tlv_size = desc_info->desc->tlv_size;
- return desc_info;
- }
- static void rocker_dma_ring_credits_set(const struct rocker *rocker,
- const struct rocker_dma_ring_info *info,
- u32 credits)
- {
- if (credits)
- rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
- }
- static unsigned long rocker_dma_ring_size_fix(size_t size)
- {
- return max(ROCKER_DMA_SIZE_MIN,
- min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
- }
- static int rocker_dma_ring_create(const struct rocker *rocker,
- unsigned int type,
- size_t size,
- struct rocker_dma_ring_info *info)
- {
- int i;
- BUG_ON(size != rocker_dma_ring_size_fix(size));
- info->size = size;
- info->type = type;
- info->head = 0;
- info->tail = 0;
- info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
- GFP_KERNEL);
- if (!info->desc_info)
- return -ENOMEM;
- info->desc = pci_alloc_consistent(rocker->pdev,
- info->size * sizeof(*info->desc),
- &info->mapaddr);
- if (!info->desc) {
- kfree(info->desc_info);
- return -ENOMEM;
- }
- for (i = 0; i < info->size; i++)
- info->desc_info[i].desc = &info->desc[i];
- rocker_write32(rocker, DMA_DESC_CTRL(info->type),
- ROCKER_DMA_DESC_CTRL_RESET);
- rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
- rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
- return 0;
- }
- static void rocker_dma_ring_destroy(const struct rocker *rocker,
- const struct rocker_dma_ring_info *info)
- {
- rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
- pci_free_consistent(rocker->pdev,
- info->size * sizeof(struct rocker_desc),
- info->desc, info->mapaddr);
- kfree(info->desc_info);
- }
- static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
- struct rocker_dma_ring_info *info)
- {
- int i;
- BUG_ON(info->head || info->tail);
- /* When ring is consumer, we need to advance head for each desc.
- * That tells hw that the desc is ready to be used by it.
- */
- for (i = 0; i < info->size - 1; i++)
- rocker_desc_head_set(rocker, info, &info->desc_info[i]);
- rocker_desc_commit(&info->desc_info[i]);
- }
- static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
- const struct rocker_dma_ring_info *info,
- int direction, size_t buf_size)
- {
- struct pci_dev *pdev = rocker->pdev;
- int i;
- int err;
- for (i = 0; i < info->size; i++) {
- struct rocker_desc_info *desc_info = &info->desc_info[i];
- struct rocker_desc *desc = &info->desc[i];
- dma_addr_t dma_handle;
- char *buf;
- buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
- if (!buf) {
- err = -ENOMEM;
- goto rollback;
- }
- dma_handle = 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_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_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_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_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);
- rocker_wait_destroy(NULL, wait);
- } 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_port_fdb(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- const unsigned char *addr,
- __be16 vlan_id, int flags);
- 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;
- int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
- __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];
- if (rocker_port->stp_state != BR_STATE_LEARNING &&
- rocker_port->stp_state != BR_STATE_FORWARDING)
- return 0;
- return rocker_port_fdb(rocker_port, NULL, addr, vlan_id, flags);
- }
- 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
- ********************/
- typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
- struct rocker_desc_info *desc_info,
- void *priv);
- typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
- const struct rocker_desc_info *desc_info,
- void *priv);
- static int rocker_cmd_exec(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- 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;
- bool nowait = !!(flags & ROCKER_OP_FLAG_NOWAIT);
- unsigned long lock_flags;
- int err;
- wait = rocker_wait_create(rocker_port, trans, flags);
- if (!wait)
- return -ENOMEM;
- wait->nowait = nowait;
- 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);
- err = -EAGAIN;
- goto out;
- }
- err = prepare(rocker_port, desc_info, prepare_priv);
- if (err) {
- spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
- goto out;
- }
- rocker_desc_cookie_ptr_set(desc_info, wait);
- if (!switchdev_trans_ph_prepare(trans))
- rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
- spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
- if (nowait)
- return 0;
- if (!switchdev_trans_ph_prepare(trans))
- 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);
- out:
- rocker_wait_destroy(trans, wait);
- 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_cmd *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]);
- ecmd->transceiver = XCVR_INTERNAL;
- ecmd->supported = SUPPORTED_TP;
- ecmd->phy_address = 0xff;
- ecmd->port = PORT_TP;
- ethtool_cmd_speed_set(ecmd, speed);
- ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
- ecmd->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;
- }
- 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_cmd *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,
- ethtool_cmd_speed(ecmd)))
- return -EMSGSIZE;
- if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
- ecmd->duplex))
- return -EMSGSIZE;
- if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
- ecmd->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)
- {
- 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,
- !!(rocker_port->brport_flags & BR_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_cmd *ecmd)
- {
- return rocker_cmd_exec(rocker_port, NULL, 0,
- 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, NULL, 0,
- rocker_cmd_get_port_settings_prep, NULL,
- rocker_cmd_get_port_settings_macaddr_proc,
- macaddr);
- }
- static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
- struct ethtool_cmd *ecmd)
- {
- return rocker_cmd_exec(rocker_port, NULL, 0,
- 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, NULL, 0,
- 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, NULL, 0,
- rocker_cmd_set_port_settings_mtu_prep,
- &mtu, NULL, NULL);
- }
- static int rocker_port_set_learning(struct rocker_port *rocker_port,
- struct switchdev_trans *trans)
- {
- return rocker_cmd_exec(rocker_port, trans, 0,
- rocker_cmd_set_port_learning_prep,
- NULL, NULL, NULL);
- }
- static int
- rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
- const struct rocker_flow_tbl_entry *entry)
- {
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
- entry->key.ig_port.in_pport))
- return -EMSGSIZE;
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
- entry->key.ig_port.in_pport_mask))
- return -EMSGSIZE;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
- entry->key.ig_port.goto_tbl))
- return -EMSGSIZE;
- return 0;
- }
- static int
- rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
- const struct rocker_flow_tbl_entry *entry)
- {
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
- entry->key.vlan.in_pport))
- return -EMSGSIZE;
- if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
- entry->key.vlan.vlan_id))
- return -EMSGSIZE;
- if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
- entry->key.vlan.vlan_id_mask))
- return -EMSGSIZE;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
- entry->key.vlan.goto_tbl))
- return -EMSGSIZE;
- if (entry->key.vlan.untagged &&
- rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
- entry->key.vlan.new_vlan_id))
- return -EMSGSIZE;
- return 0;
- }
- static int
- rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
- const struct rocker_flow_tbl_entry *entry)
- {
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
- entry->key.term_mac.in_pport))
- return -EMSGSIZE;
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
- entry->key.term_mac.in_pport_mask))
- return -EMSGSIZE;
- if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
- entry->key.term_mac.eth_type))
- return -EMSGSIZE;
- if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
- ETH_ALEN, entry->key.term_mac.eth_dst))
- return -EMSGSIZE;
- if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
- ETH_ALEN, entry->key.term_mac.eth_dst_mask))
- return -EMSGSIZE;
- if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
- entry->key.term_mac.vlan_id))
- return -EMSGSIZE;
- if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
- entry->key.term_mac.vlan_id_mask))
- return -EMSGSIZE;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
- entry->key.term_mac.goto_tbl))
- return -EMSGSIZE;
- if (entry->key.term_mac.copy_to_cpu &&
- rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
- entry->key.term_mac.copy_to_cpu))
- return -EMSGSIZE;
- return 0;
- }
- static int
- rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
- const struct rocker_flow_tbl_entry *entry)
- {
- if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
- entry->key.ucast_routing.eth_type))
- return -EMSGSIZE;
- if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
- entry->key.ucast_routing.dst4))
- return -EMSGSIZE;
- if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
- entry->key.ucast_routing.dst4_mask))
- return -EMSGSIZE;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
- entry->key.ucast_routing.goto_tbl))
- return -EMSGSIZE;
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
- entry->key.ucast_routing.group_id))
- return -EMSGSIZE;
- return 0;
- }
- static int
- rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
- const struct rocker_flow_tbl_entry *entry)
- {
- if (entry->key.bridge.has_eth_dst &&
- rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
- ETH_ALEN, entry->key.bridge.eth_dst))
- return -EMSGSIZE;
- if (entry->key.bridge.has_eth_dst_mask &&
- rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
- ETH_ALEN, entry->key.bridge.eth_dst_mask))
- return -EMSGSIZE;
- if (entry->key.bridge.vlan_id &&
- rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
- entry->key.bridge.vlan_id))
- return -EMSGSIZE;
- if (entry->key.bridge.tunnel_id &&
- rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
- entry->key.bridge.tunnel_id))
- return -EMSGSIZE;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
- entry->key.bridge.goto_tbl))
- return -EMSGSIZE;
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
- entry->key.bridge.group_id))
- return -EMSGSIZE;
- if (entry->key.bridge.copy_to_cpu &&
- rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
- entry->key.bridge.copy_to_cpu))
- return -EMSGSIZE;
- return 0;
- }
- static int
- rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
- const struct rocker_flow_tbl_entry *entry)
- {
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
- entry->key.acl.in_pport))
- return -EMSGSIZE;
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
- entry->key.acl.in_pport_mask))
- return -EMSGSIZE;
- if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
- ETH_ALEN, entry->key.acl.eth_src))
- return -EMSGSIZE;
- if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
- ETH_ALEN, entry->key.acl.eth_src_mask))
- return -EMSGSIZE;
- if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
- ETH_ALEN, entry->key.acl.eth_dst))
- return -EMSGSIZE;
- if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
- ETH_ALEN, entry->key.acl.eth_dst_mask))
- return -EMSGSIZE;
- if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
- entry->key.acl.eth_type))
- return -EMSGSIZE;
- if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
- entry->key.acl.vlan_id))
- return -EMSGSIZE;
- if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
- entry->key.acl.vlan_id_mask))
- return -EMSGSIZE;
- switch (ntohs(entry->key.acl.eth_type)) {
- case ETH_P_IP:
- case ETH_P_IPV6:
- if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
- entry->key.acl.ip_proto))
- return -EMSGSIZE;
- if (rocker_tlv_put_u8(desc_info,
- ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
- entry->key.acl.ip_proto_mask))
- return -EMSGSIZE;
- if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
- entry->key.acl.ip_tos & 0x3f))
- return -EMSGSIZE;
- if (rocker_tlv_put_u8(desc_info,
- ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
- entry->key.acl.ip_tos_mask & 0x3f))
- return -EMSGSIZE;
- if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
- (entry->key.acl.ip_tos & 0xc0) >> 6))
- return -EMSGSIZE;
- if (rocker_tlv_put_u8(desc_info,
- ROCKER_TLV_OF_DPA_IP_ECN_MASK,
- (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
- return -EMSGSIZE;
- break;
- }
- if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
- rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
- entry->key.acl.group_id))
- return -EMSGSIZE;
- return 0;
- }
- static int rocker_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
- struct rocker_desc_info *desc_info,
- void *priv)
- {
- const struct rocker_flow_tbl_entry *entry = priv;
- struct rocker_tlv *cmd_info;
- int err = 0;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
- return -EMSGSIZE;
- cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
- if (!cmd_info)
- return -EMSGSIZE;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
- entry->key.tbl_id))
- return -EMSGSIZE;
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
- entry->key.priority))
- return -EMSGSIZE;
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
- return -EMSGSIZE;
- if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
- entry->cookie))
- return -EMSGSIZE;
- switch (entry->key.tbl_id) {
- case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
- err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
- break;
- case ROCKER_OF_DPA_TABLE_ID_VLAN:
- err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
- break;
- case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
- err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
- break;
- case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
- err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
- break;
- case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
- err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
- break;
- case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
- err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
- break;
- default:
- err = -ENOTSUPP;
- break;
- }
- if (err)
- return err;
- rocker_tlv_nest_end(desc_info, cmd_info);
- return 0;
- }
- static int rocker_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
- struct rocker_desc_info *desc_info,
- void *priv)
- {
- const struct rocker_flow_tbl_entry *entry = priv;
- struct rocker_tlv *cmd_info;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
- return -EMSGSIZE;
- cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
- if (!cmd_info)
- return -EMSGSIZE;
- if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
- entry->cookie))
- return -EMSGSIZE;
- rocker_tlv_nest_end(desc_info, cmd_info);
- return 0;
- }
- static int
- rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
- struct rocker_group_tbl_entry *entry)
- {
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
- ROCKER_GROUP_PORT_GET(entry->group_id)))
- return -EMSGSIZE;
- if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
- entry->l2_interface.pop_vlan))
- return -EMSGSIZE;
- return 0;
- }
- static int
- rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
- const struct rocker_group_tbl_entry *entry)
- {
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
- entry->l2_rewrite.group_id))
- return -EMSGSIZE;
- if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
- rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
- ETH_ALEN, entry->l2_rewrite.eth_src))
- return -EMSGSIZE;
- if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
- rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
- ETH_ALEN, entry->l2_rewrite.eth_dst))
- return -EMSGSIZE;
- if (entry->l2_rewrite.vlan_id &&
- rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
- entry->l2_rewrite.vlan_id))
- return -EMSGSIZE;
- return 0;
- }
- static int
- rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
- const struct rocker_group_tbl_entry *entry)
- {
- int i;
- struct rocker_tlv *group_ids;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
- entry->group_count))
- return -EMSGSIZE;
- group_ids = rocker_tlv_nest_start(desc_info,
- ROCKER_TLV_OF_DPA_GROUP_IDS);
- if (!group_ids)
- return -EMSGSIZE;
- for (i = 0; i < entry->group_count; i++)
- /* Note TLV array is 1-based */
- if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
- return -EMSGSIZE;
- rocker_tlv_nest_end(desc_info, group_ids);
- return 0;
- }
- static int
- rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
- const struct rocker_group_tbl_entry *entry)
- {
- if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
- rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
- ETH_ALEN, entry->l3_unicast.eth_src))
- return -EMSGSIZE;
- if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
- rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
- ETH_ALEN, entry->l3_unicast.eth_dst))
- return -EMSGSIZE;
- if (entry->l3_unicast.vlan_id &&
- rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
- entry->l3_unicast.vlan_id))
- return -EMSGSIZE;
- if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
- entry->l3_unicast.ttl_check))
- return -EMSGSIZE;
- if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
- entry->l3_unicast.group_id))
- return -EMSGSIZE;
- return 0;
- }
- static int rocker_cmd_group_tbl_add(const struct rocker_port *rocker_port,
- struct rocker_desc_info *desc_info,
- void *priv)
- {
- struct rocker_group_tbl_entry *entry = priv;
- struct rocker_tlv *cmd_info;
- int err = 0;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
- 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_OF_DPA_GROUP_ID,
- entry->group_id))
- return -EMSGSIZE;
- switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
- case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
- err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
- break;
- case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
- err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
- break;
- case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
- case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
- err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
- break;
- case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
- err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
- break;
- default:
- err = -ENOTSUPP;
- break;
- }
- if (err)
- return err;
- rocker_tlv_nest_end(desc_info, cmd_info);
- return 0;
- }
- static int rocker_cmd_group_tbl_del(const struct rocker_port *rocker_port,
- struct rocker_desc_info *desc_info,
- void *priv)
- {
- const struct rocker_group_tbl_entry *entry = priv;
- struct rocker_tlv *cmd_info;
- if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
- 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_OF_DPA_GROUP_ID,
- entry->group_id))
- return -EMSGSIZE;
- rocker_tlv_nest_end(desc_info, cmd_info);
- return 0;
- }
- /***************************************************
- * Flow, group, FDB, internal VLAN and neigh tables
- ***************************************************/
- static int rocker_init_tbls(struct rocker *rocker)
- {
- hash_init(rocker->flow_tbl);
- spin_lock_init(&rocker->flow_tbl_lock);
- hash_init(rocker->group_tbl);
- spin_lock_init(&rocker->group_tbl_lock);
- hash_init(rocker->fdb_tbl);
- spin_lock_init(&rocker->fdb_tbl_lock);
- hash_init(rocker->internal_vlan_tbl);
- spin_lock_init(&rocker->internal_vlan_tbl_lock);
- hash_init(rocker->neigh_tbl);
- spin_lock_init(&rocker->neigh_tbl_lock);
- return 0;
- }
- static void rocker_free_tbls(struct rocker *rocker)
- {
- unsigned long flags;
- struct rocker_flow_tbl_entry *flow_entry;
- struct rocker_group_tbl_entry *group_entry;
- struct rocker_fdb_tbl_entry *fdb_entry;
- struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
- struct rocker_neigh_tbl_entry *neigh_entry;
- struct hlist_node *tmp;
- int bkt;
- spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
- hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
- hash_del(&flow_entry->entry);
- spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
- spin_lock_irqsave(&rocker->group_tbl_lock, flags);
- hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
- hash_del(&group_entry->entry);
- spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
- spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
- hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
- hash_del(&fdb_entry->entry);
- spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
- spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
- hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
- tmp, internal_vlan_entry, entry)
- hash_del(&internal_vlan_entry->entry);
- spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
- spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
- hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
- hash_del(&neigh_entry->entry);
- spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
- }
- static struct rocker_flow_tbl_entry *
- rocker_flow_tbl_find(const struct rocker *rocker,
- const struct rocker_flow_tbl_entry *match)
- {
- struct rocker_flow_tbl_entry *found;
- size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
- hash_for_each_possible(rocker->flow_tbl, found,
- entry, match->key_crc32) {
- if (memcmp(&found->key, &match->key, key_len) == 0)
- return found;
- }
- return NULL;
- }
- static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- struct rocker_flow_tbl_entry *match)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_flow_tbl_entry *found;
- size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
- unsigned long lock_flags;
- match->key_crc32 = crc32(~0, &match->key, key_len);
- spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
- found = rocker_flow_tbl_find(rocker, match);
- if (found) {
- match->cookie = found->cookie;
- if (!switchdev_trans_ph_prepare(trans))
- hash_del(&found->entry);
- rocker_port_kfree(trans, found);
- found = match;
- found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
- } else {
- found = match;
- found->cookie = rocker->flow_tbl_next_cookie++;
- found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
- }
- if (!switchdev_trans_ph_prepare(trans))
- hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
- spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
- return rocker_cmd_exec(rocker_port, trans, flags,
- rocker_cmd_flow_tbl_add, found, NULL, NULL);
- }
- static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- struct rocker_flow_tbl_entry *match)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_flow_tbl_entry *found;
- size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
- unsigned long lock_flags;
- int err = 0;
- match->key_crc32 = crc32(~0, &match->key, key_len);
- spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
- found = rocker_flow_tbl_find(rocker, match);
- if (found) {
- if (!switchdev_trans_ph_prepare(trans))
- hash_del(&found->entry);
- found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
- }
- spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
- rocker_port_kfree(trans, match);
- if (found) {
- err = rocker_cmd_exec(rocker_port, trans, flags,
- rocker_cmd_flow_tbl_del,
- found, NULL, NULL);
- rocker_port_kfree(trans, found);
- }
- return err;
- }
- static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- struct rocker_flow_tbl_entry *entry)
- {
- if (flags & ROCKER_OP_FLAG_REMOVE)
- return rocker_flow_tbl_del(rocker_port, trans, flags, entry);
- else
- return rocker_flow_tbl_add(rocker_port, trans, flags, entry);
- }
- static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- u32 in_pport, u32 in_pport_mask,
- enum rocker_of_dpa_table_id goto_tbl)
- {
- struct rocker_flow_tbl_entry *entry;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- entry->key.priority = ROCKER_PRIORITY_IG_PORT;
- entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
- entry->key.ig_port.in_pport = in_pport;
- entry->key.ig_port.in_pport_mask = in_pport_mask;
- entry->key.ig_port.goto_tbl = goto_tbl;
- return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
- }
- static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- u32 in_pport, __be16 vlan_id,
- __be16 vlan_id_mask,
- enum rocker_of_dpa_table_id goto_tbl,
- bool untagged, __be16 new_vlan_id)
- {
- struct rocker_flow_tbl_entry *entry;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- entry->key.priority = ROCKER_PRIORITY_VLAN;
- entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
- entry->key.vlan.in_pport = in_pport;
- entry->key.vlan.vlan_id = vlan_id;
- entry->key.vlan.vlan_id_mask = vlan_id_mask;
- entry->key.vlan.goto_tbl = goto_tbl;
- entry->key.vlan.untagged = untagged;
- entry->key.vlan.new_vlan_id = new_vlan_id;
- return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
- }
- static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- u32 in_pport, u32 in_pport_mask,
- __be16 eth_type, const u8 *eth_dst,
- const u8 *eth_dst_mask, __be16 vlan_id,
- __be16 vlan_id_mask, bool copy_to_cpu,
- int flags)
- {
- struct rocker_flow_tbl_entry *entry;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- if (is_multicast_ether_addr(eth_dst)) {
- entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
- entry->key.term_mac.goto_tbl =
- ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
- } else {
- entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
- entry->key.term_mac.goto_tbl =
- ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
- }
- entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
- entry->key.term_mac.in_pport = in_pport;
- entry->key.term_mac.in_pport_mask = in_pport_mask;
- entry->key.term_mac.eth_type = eth_type;
- ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
- ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
- entry->key.term_mac.vlan_id = vlan_id;
- entry->key.term_mac.vlan_id_mask = vlan_id_mask;
- entry->key.term_mac.copy_to_cpu = copy_to_cpu;
- return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
- }
- static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- const u8 *eth_dst, const u8 *eth_dst_mask,
- __be16 vlan_id, u32 tunnel_id,
- enum rocker_of_dpa_table_id goto_tbl,
- u32 group_id, bool copy_to_cpu)
- {
- struct rocker_flow_tbl_entry *entry;
- u32 priority;
- bool vlan_bridging = !!vlan_id;
- bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
- bool wild = false;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
- if (eth_dst) {
- entry->key.bridge.has_eth_dst = 1;
- ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
- }
- if (eth_dst_mask) {
- entry->key.bridge.has_eth_dst_mask = 1;
- ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
- if (!ether_addr_equal(eth_dst_mask, ff_mac))
- wild = true;
- }
- priority = ROCKER_PRIORITY_UNKNOWN;
- if (vlan_bridging && dflt && wild)
- priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
- else if (vlan_bridging && dflt && !wild)
- priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
- else if (vlan_bridging && !dflt)
- priority = ROCKER_PRIORITY_BRIDGING_VLAN;
- else if (!vlan_bridging && dflt && wild)
- priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
- else if (!vlan_bridging && dflt && !wild)
- priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
- else if (!vlan_bridging && !dflt)
- priority = ROCKER_PRIORITY_BRIDGING_TENANT;
- entry->key.priority = priority;
- entry->key.bridge.vlan_id = vlan_id;
- entry->key.bridge.tunnel_id = tunnel_id;
- entry->key.bridge.goto_tbl = goto_tbl;
- entry->key.bridge.group_id = group_id;
- entry->key.bridge.copy_to_cpu = copy_to_cpu;
- return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
- }
- static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- __be16 eth_type, __be32 dst,
- __be32 dst_mask, u32 priority,
- enum rocker_of_dpa_table_id goto_tbl,
- u32 group_id, int flags)
- {
- struct rocker_flow_tbl_entry *entry;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
- entry->key.priority = priority;
- entry->key.ucast_routing.eth_type = eth_type;
- entry->key.ucast_routing.dst4 = dst;
- entry->key.ucast_routing.dst4_mask = dst_mask;
- entry->key.ucast_routing.goto_tbl = goto_tbl;
- entry->key.ucast_routing.group_id = group_id;
- entry->key_len = offsetof(struct rocker_flow_tbl_key,
- ucast_routing.group_id);
- return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
- }
- static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- u32 in_pport, u32 in_pport_mask,
- const u8 *eth_src, const u8 *eth_src_mask,
- const u8 *eth_dst, const u8 *eth_dst_mask,
- __be16 eth_type, __be16 vlan_id,
- __be16 vlan_id_mask, u8 ip_proto,
- u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
- u32 group_id)
- {
- u32 priority;
- struct rocker_flow_tbl_entry *entry;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- priority = ROCKER_PRIORITY_ACL_NORMAL;
- if (eth_dst && eth_dst_mask) {
- if (ether_addr_equal(eth_dst_mask, mcast_mac))
- priority = ROCKER_PRIORITY_ACL_DFLT;
- else if (is_link_local_ether_addr(eth_dst))
- priority = ROCKER_PRIORITY_ACL_CTRL;
- }
- entry->key.priority = priority;
- entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
- entry->key.acl.in_pport = in_pport;
- entry->key.acl.in_pport_mask = in_pport_mask;
- if (eth_src)
- ether_addr_copy(entry->key.acl.eth_src, eth_src);
- if (eth_src_mask)
- ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
- if (eth_dst)
- ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
- if (eth_dst_mask)
- ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
- entry->key.acl.eth_type = eth_type;
- entry->key.acl.vlan_id = vlan_id;
- entry->key.acl.vlan_id_mask = vlan_id_mask;
- entry->key.acl.ip_proto = ip_proto;
- entry->key.acl.ip_proto_mask = ip_proto_mask;
- entry->key.acl.ip_tos = ip_tos;
- entry->key.acl.ip_tos_mask = ip_tos_mask;
- entry->key.acl.group_id = group_id;
- return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
- }
- static struct rocker_group_tbl_entry *
- rocker_group_tbl_find(const struct rocker *rocker,
- const struct rocker_group_tbl_entry *match)
- {
- struct rocker_group_tbl_entry *found;
- hash_for_each_possible(rocker->group_tbl, found,
- entry, match->group_id) {
- if (found->group_id == match->group_id)
- return found;
- }
- return NULL;
- }
- static void rocker_group_tbl_entry_free(struct switchdev_trans *trans,
- struct rocker_group_tbl_entry *entry)
- {
- switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
- case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
- case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
- rocker_port_kfree(trans, entry->group_ids);
- break;
- default:
- break;
- }
- rocker_port_kfree(trans, entry);
- }
- static int rocker_group_tbl_add(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- struct rocker_group_tbl_entry *match)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_group_tbl_entry *found;
- unsigned long lock_flags;
- spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
- found = rocker_group_tbl_find(rocker, match);
- if (found) {
- if (!switchdev_trans_ph_prepare(trans))
- hash_del(&found->entry);
- rocker_group_tbl_entry_free(trans, found);
- found = match;
- found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
- } else {
- found = match;
- found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
- }
- if (!switchdev_trans_ph_prepare(trans))
- hash_add(rocker->group_tbl, &found->entry, found->group_id);
- spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
- return rocker_cmd_exec(rocker_port, trans, flags,
- rocker_cmd_group_tbl_add, found, NULL, NULL);
- }
- static int rocker_group_tbl_del(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- struct rocker_group_tbl_entry *match)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_group_tbl_entry *found;
- unsigned long lock_flags;
- int err = 0;
- spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
- found = rocker_group_tbl_find(rocker, match);
- if (found) {
- if (!switchdev_trans_ph_prepare(trans))
- hash_del(&found->entry);
- found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
- }
- spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
- rocker_group_tbl_entry_free(trans, match);
- if (found) {
- err = rocker_cmd_exec(rocker_port, trans, flags,
- rocker_cmd_group_tbl_del,
- found, NULL, NULL);
- rocker_group_tbl_entry_free(trans, found);
- }
- return err;
- }
- static int rocker_group_tbl_do(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- struct rocker_group_tbl_entry *entry)
- {
- if (flags & ROCKER_OP_FLAG_REMOVE)
- return rocker_group_tbl_del(rocker_port, trans, flags, entry);
- else
- return rocker_group_tbl_add(rocker_port, trans, flags, entry);
- }
- static int rocker_group_l2_interface(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- __be16 vlan_id, u32 out_pport,
- int pop_vlan)
- {
- struct rocker_group_tbl_entry *entry;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
- entry->l2_interface.pop_vlan = pop_vlan;
- return rocker_group_tbl_do(rocker_port, trans, flags, entry);
- }
- static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- int flags, u8 group_count,
- const u32 *group_ids, u32 group_id)
- {
- struct rocker_group_tbl_entry *entry;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- entry->group_id = group_id;
- entry->group_count = group_count;
- entry->group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
- group_count, sizeof(u32));
- if (!entry->group_ids) {
- rocker_port_kfree(trans, entry);
- return -ENOMEM;
- }
- memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
- return rocker_group_tbl_do(rocker_port, trans, flags, entry);
- }
- static int rocker_group_l2_flood(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- __be16 vlan_id, u8 group_count,
- const u32 *group_ids, u32 group_id)
- {
- return rocker_group_l2_fan_out(rocker_port, trans, flags,
- group_count, group_ids,
- group_id);
- }
- static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- u32 index, const u8 *src_mac, const u8 *dst_mac,
- __be16 vlan_id, bool ttl_check, u32 pport)
- {
- struct rocker_group_tbl_entry *entry;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
- if (src_mac)
- ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
- if (dst_mac)
- ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
- entry->l3_unicast.vlan_id = vlan_id;
- entry->l3_unicast.ttl_check = ttl_check;
- entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
- return rocker_group_tbl_do(rocker_port, trans, flags, entry);
- }
- static struct rocker_neigh_tbl_entry *
- rocker_neigh_tbl_find(const struct rocker *rocker, __be32 ip_addr)
- {
- struct rocker_neigh_tbl_entry *found;
- hash_for_each_possible(rocker->neigh_tbl, found,
- entry, be32_to_cpu(ip_addr))
- if (found->ip_addr == ip_addr)
- return found;
- return NULL;
- }
- static void _rocker_neigh_add(struct rocker *rocker,
- struct switchdev_trans *trans,
- struct rocker_neigh_tbl_entry *entry)
- {
- if (!switchdev_trans_ph_commit(trans))
- entry->index = rocker->neigh_tbl_next_index++;
- if (switchdev_trans_ph_prepare(trans))
- return;
- entry->ref_count++;
- hash_add(rocker->neigh_tbl, &entry->entry,
- be32_to_cpu(entry->ip_addr));
- }
- static void _rocker_neigh_del(struct switchdev_trans *trans,
- struct rocker_neigh_tbl_entry *entry)
- {
- if (switchdev_trans_ph_prepare(trans))
- return;
- if (--entry->ref_count == 0) {
- hash_del(&entry->entry);
- rocker_port_kfree(trans, entry);
- }
- }
- static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
- struct switchdev_trans *trans,
- const u8 *eth_dst, bool ttl_check)
- {
- if (eth_dst) {
- ether_addr_copy(entry->eth_dst, eth_dst);
- entry->ttl_check = ttl_check;
- } else if (!switchdev_trans_ph_prepare(trans)) {
- entry->ref_count++;
- }
- }
- static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- int flags, __be32 ip_addr, const u8 *eth_dst)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_neigh_tbl_entry *entry;
- struct rocker_neigh_tbl_entry *found;
- unsigned long lock_flags;
- __be16 eth_type = htons(ETH_P_IP);
- enum rocker_of_dpa_table_id goto_tbl =
- ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
- u32 group_id;
- u32 priority = 0;
- bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
- bool updating;
- bool removing;
- int err = 0;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
- found = rocker_neigh_tbl_find(rocker, ip_addr);
- updating = found && adding;
- removing = found && !adding;
- adding = !found && adding;
- if (adding) {
- entry->ip_addr = ip_addr;
- entry->dev = rocker_port->dev;
- ether_addr_copy(entry->eth_dst, eth_dst);
- entry->ttl_check = true;
- _rocker_neigh_add(rocker, trans, entry);
- } else if (removing) {
- memcpy(entry, found, sizeof(*entry));
- _rocker_neigh_del(trans, found);
- } else if (updating) {
- _rocker_neigh_update(found, trans, eth_dst, true);
- memcpy(entry, found, sizeof(*entry));
- } else {
- err = -ENOENT;
- }
- spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
- if (err)
- goto err_out;
- /* For each active neighbor, we have an L3 unicast group and
- * a /32 route to the neighbor, which uses the L3 unicast
- * group. The L3 unicast group can also be referred to by
- * other routes' nexthops.
- */
- err = rocker_group_l3_unicast(rocker_port, trans, flags,
- entry->index,
- rocker_port->dev->dev_addr,
- entry->eth_dst,
- rocker_port->internal_vlan_id,
- entry->ttl_check,
- rocker_port->pport);
- if (err) {
- netdev_err(rocker_port->dev,
- "Error (%d) L3 unicast group index %d\n",
- err, entry->index);
- goto err_out;
- }
- if (adding || removing) {
- group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
- err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
- eth_type, ip_addr,
- inet_make_mask(32),
- priority, goto_tbl,
- group_id, flags);
- if (err)
- netdev_err(rocker_port->dev,
- "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
- err, &entry->ip_addr, group_id);
- }
- err_out:
- if (!adding)
- rocker_port_kfree(trans, entry);
- return err;
- }
- static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- __be32 ip_addr)
- {
- struct net_device *dev = rocker_port->dev;
- struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
- int err = 0;
- if (!n) {
- n = neigh_create(&arp_tbl, &ip_addr, dev);
- if (IS_ERR(n))
- return IS_ERR(n);
- }
- /* If the neigh is already resolved, then go ahead and
- * install the entry, otherwise start the ARP process to
- * resolve the neigh.
- */
- if (n->nud_state & NUD_VALID)
- err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
- ip_addr, n->ha);
- else
- neigh_event_send(n, NULL);
- neigh_release(n);
- return err;
- }
- static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- __be32 ip_addr, u32 *index)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_neigh_tbl_entry *entry;
- struct rocker_neigh_tbl_entry *found;
- unsigned long lock_flags;
- bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
- bool updating;
- bool removing;
- bool resolved = true;
- int err = 0;
- entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
- if (!entry)
- return -ENOMEM;
- spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
- found = rocker_neigh_tbl_find(rocker, ip_addr);
- if (found)
- *index = found->index;
- updating = found && adding;
- removing = found && !adding;
- adding = !found && adding;
- if (adding) {
- entry->ip_addr = ip_addr;
- entry->dev = rocker_port->dev;
- _rocker_neigh_add(rocker, trans, entry);
- *index = entry->index;
- resolved = false;
- } else if (removing) {
- _rocker_neigh_del(trans, found);
- } else if (updating) {
- _rocker_neigh_update(found, trans, NULL, false);
- resolved = !is_zero_ether_addr(found->eth_dst);
- } else {
- err = -ENOENT;
- }
- spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
- if (!adding)
- rocker_port_kfree(trans, entry);
- if (err)
- return err;
- /* Resolved means neigh ip_addr is resolved to neigh mac. */
- if (!resolved)
- err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
- return err;
- }
- static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- int flags, __be16 vlan_id)
- {
- struct rocker_port *p;
- const struct rocker *rocker = rocker_port->rocker;
- u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
- u32 *group_ids;
- u8 group_count = 0;
- int err = 0;
- int i;
- group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
- rocker->port_count, sizeof(u32));
- if (!group_ids)
- return -ENOMEM;
- /* Adjust the flood group for this VLAN. The flood group
- * references an L2 interface group for each port in this
- * VLAN.
- */
- for (i = 0; i < rocker->port_count; i++) {
- p = rocker->ports[i];
- if (!p)
- continue;
- if (!rocker_port_is_bridged(p))
- continue;
- if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
- group_ids[group_count++] =
- ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
- }
- }
- /* If there are no bridged ports in this VLAN, we're done */
- if (group_count == 0)
- goto no_ports_in_vlan;
- err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
- group_count, group_ids, group_id);
- if (err)
- netdev_err(rocker_port->dev,
- "Error (%d) port VLAN l2 flood group\n", err);
- no_ports_in_vlan:
- rocker_port_kfree(trans, group_ids);
- return err;
- }
- static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- __be16 vlan_id, bool pop_vlan)
- {
- const struct rocker *rocker = rocker_port->rocker;
- struct rocker_port *p;
- bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
- u32 out_pport;
- int ref = 0;
- int err;
- int i;
- /* An L2 interface group for this port in this VLAN, but
- * only when port STP state is LEARNING|FORWARDING.
- */
- if (rocker_port->stp_state == BR_STATE_LEARNING ||
- rocker_port->stp_state == BR_STATE_FORWARDING) {
- out_pport = rocker_port->pport;
- err = rocker_group_l2_interface(rocker_port, trans, flags,
- vlan_id, out_pport, pop_vlan);
- if (err) {
- netdev_err(rocker_port->dev,
- "Error (%d) port VLAN l2 group for pport %d\n",
- err, out_pport);
- return err;
- }
- }
- /* An L2 interface group for this VLAN to CPU port.
- * Add when first port joins this VLAN and destroy when
- * last port leaves this VLAN.
- */
- for (i = 0; i < rocker->port_count; i++) {
- p = rocker->ports[i];
- if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
- ref++;
- }
- if ((!adding || ref != 1) && (adding || ref != 0))
- return 0;
- out_pport = 0;
- err = rocker_group_l2_interface(rocker_port, trans, flags,
- vlan_id, out_pport, pop_vlan);
- if (err) {
- netdev_err(rocker_port->dev,
- "Error (%d) port VLAN l2 group for CPU port\n", err);
- return err;
- }
- return 0;
- }
- static struct rocker_ctrl {
- const u8 *eth_dst;
- const u8 *eth_dst_mask;
- __be16 eth_type;
- bool acl;
- bool bridge;
- bool term;
- bool copy_to_cpu;
- } rocker_ctrls[] = {
- [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
- /* pass link local multicast pkts up to CPU for filtering */
- .eth_dst = ll_mac,
- .eth_dst_mask = ll_mask,
- .acl = true,
- },
- [ROCKER_CTRL_LOCAL_ARP] = {
- /* pass local ARP pkts up to CPU */
- .eth_dst = zero_mac,
- .eth_dst_mask = zero_mac,
- .eth_type = htons(ETH_P_ARP),
- .acl = true,
- },
- [ROCKER_CTRL_IPV4_MCAST] = {
- /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
- .eth_dst = ipv4_mcast,
- .eth_dst_mask = ipv4_mask,
- .eth_type = htons(ETH_P_IP),
- .term = true,
- .copy_to_cpu = true,
- },
- [ROCKER_CTRL_IPV6_MCAST] = {
- /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
- .eth_dst = ipv6_mcast,
- .eth_dst_mask = ipv6_mask,
- .eth_type = htons(ETH_P_IPV6),
- .term = true,
- .copy_to_cpu = true,
- },
- [ROCKER_CTRL_DFLT_BRIDGING] = {
- /* flood any pkts on vlan */
- .bridge = true,
- .copy_to_cpu = true,
- },
- [ROCKER_CTRL_DFLT_OVS] = {
- /* pass all pkts up to CPU */
- .eth_dst = zero_mac,
- .eth_dst_mask = zero_mac,
- .acl = true,
- },
- };
- static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- const struct rocker_ctrl *ctrl, __be16 vlan_id)
- {
- u32 in_pport = rocker_port->pport;
- u32 in_pport_mask = 0xffffffff;
- u32 out_pport = 0;
- const u8 *eth_src = NULL;
- const u8 *eth_src_mask = NULL;
- __be16 vlan_id_mask = htons(0xffff);
- u8 ip_proto = 0;
- u8 ip_proto_mask = 0;
- u8 ip_tos = 0;
- u8 ip_tos_mask = 0;
- u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
- int err;
- err = rocker_flow_tbl_acl(rocker_port, trans, flags,
- in_pport, in_pport_mask,
- eth_src, eth_src_mask,
- ctrl->eth_dst, ctrl->eth_dst_mask,
- ctrl->eth_type,
- vlan_id, vlan_id_mask,
- ip_proto, ip_proto_mask,
- ip_tos, ip_tos_mask,
- group_id);
- if (err)
- netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
- return err;
- }
- static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- int flags,
- const struct rocker_ctrl *ctrl,
- __be16 vlan_id)
- {
- enum rocker_of_dpa_table_id goto_tbl =
- ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
- u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
- u32 tunnel_id = 0;
- int err;
- if (!rocker_port_is_bridged(rocker_port))
- return 0;
- err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
- ctrl->eth_dst, ctrl->eth_dst_mask,
- vlan_id, tunnel_id,
- goto_tbl, group_id, ctrl->copy_to_cpu);
- if (err)
- netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
- return err;
- }
- static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- const struct rocker_ctrl *ctrl, __be16 vlan_id)
- {
- u32 in_pport_mask = 0xffffffff;
- __be16 vlan_id_mask = htons(0xffff);
- int err;
- if (ntohs(vlan_id) == 0)
- vlan_id = rocker_port->internal_vlan_id;
- err = rocker_flow_tbl_term_mac(rocker_port, trans,
- rocker_port->pport, in_pport_mask,
- ctrl->eth_type, ctrl->eth_dst,
- ctrl->eth_dst_mask, vlan_id,
- vlan_id_mask, ctrl->copy_to_cpu,
- flags);
- if (err)
- netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
- return err;
- }
- static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- const struct rocker_ctrl *ctrl, __be16 vlan_id)
- {
- if (ctrl->acl)
- return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
- ctrl, vlan_id);
- if (ctrl->bridge)
- return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
- ctrl, vlan_id);
- if (ctrl->term)
- return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
- ctrl, vlan_id);
- return -EOPNOTSUPP;
- }
- static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- __be16 vlan_id)
- {
- int err = 0;
- int i;
- for (i = 0; i < ROCKER_CTRL_MAX; i++) {
- if (rocker_port->ctrls[i]) {
- err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
- &rocker_ctrls[i], vlan_id);
- if (err)
- return err;
- }
- }
- return err;
- }
- static int rocker_port_ctrl(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- const struct rocker_ctrl *ctrl)
- {
- u16 vid;
- int err = 0;
- for (vid = 1; vid < VLAN_N_VID; vid++) {
- if (!test_bit(vid, rocker_port->vlan_bitmap))
- continue;
- err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
- ctrl, htons(vid));
- if (err)
- break;
- }
- return err;
- }
- static int rocker_port_vlan(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags, u16 vid)
- {
- enum rocker_of_dpa_table_id goto_tbl =
- ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
- u32 in_pport = rocker_port->pport;
- __be16 vlan_id = htons(vid);
- __be16 vlan_id_mask = htons(0xffff);
- __be16 internal_vlan_id;
- bool untagged;
- bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
- int err;
- internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
- if (adding && test_bit(ntohs(internal_vlan_id),
- rocker_port->vlan_bitmap))
- return 0; /* already added */
- else if (!adding && !test_bit(ntohs(internal_vlan_id),
- rocker_port->vlan_bitmap))
- return 0; /* already removed */
- change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
- if (adding) {
- err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
- internal_vlan_id);
- if (err) {
- netdev_err(rocker_port->dev,
- "Error (%d) port ctrl vlan add\n", err);
- goto err_out;
- }
- }
- err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
- internal_vlan_id, untagged);
- if (err) {
- netdev_err(rocker_port->dev,
- "Error (%d) port VLAN l2 groups\n", err);
- goto err_out;
- }
- err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
- internal_vlan_id);
- if (err) {
- netdev_err(rocker_port->dev,
- "Error (%d) port VLAN l2 flood group\n", err);
- goto err_out;
- }
- err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
- in_pport, vlan_id, vlan_id_mask,
- goto_tbl, untagged, internal_vlan_id);
- if (err)
- netdev_err(rocker_port->dev,
- "Error (%d) port VLAN table\n", err);
- err_out:
- if (switchdev_trans_ph_prepare(trans))
- change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
- return err;
- }
- static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags)
- {
- enum rocker_of_dpa_table_id goto_tbl;
- u32 in_pport;
- u32 in_pport_mask;
- int err;
- /* Normal Ethernet Frames. Matches pkts from any local physical
- * ports. Goto VLAN tbl.
- */
- in_pport = 0;
- in_pport_mask = 0xffff0000;
- goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
- err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
- in_pport, in_pport_mask,
- goto_tbl);
- if (err)
- netdev_err(rocker_port->dev,
- "Error (%d) ingress port table entry\n", err);
- return err;
- }
- struct rocker_fdb_learn_work {
- struct work_struct work;
- struct rocker_port *rocker_port;
- struct switchdev_trans *trans;
- int flags;
- u8 addr[ETH_ALEN];
- u16 vid;
- };
- static void rocker_port_fdb_learn_work(struct work_struct *work)
- {
- const struct rocker_fdb_learn_work *lw =
- container_of(work, struct rocker_fdb_learn_work, work);
- bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
- bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
- struct switchdev_notifier_fdb_info info;
- info.addr = lw->addr;
- info.vid = lw->vid;
- rtnl_lock();
- if (learned && removing)
- call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
- lw->rocker_port->dev, &info.info);
- else if (learned && !removing)
- call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
- lw->rocker_port->dev, &info.info);
- rtnl_unlock();
- rocker_port_kfree(lw->trans, work);
- }
- static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- const u8 *addr, __be16 vlan_id)
- {
- struct rocker_fdb_learn_work *lw;
- enum rocker_of_dpa_table_id goto_tbl =
- ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
- u32 out_pport = rocker_port->pport;
- u32 tunnel_id = 0;
- u32 group_id = ROCKER_GROUP_NONE;
- bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
- bool copy_to_cpu = false;
- int err;
- if (rocker_port_is_bridged(rocker_port))
- group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
- if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
- err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
- NULL, vlan_id, tunnel_id, goto_tbl,
- group_id, copy_to_cpu);
- if (err)
- return err;
- }
- if (!syncing)
- return 0;
- if (!rocker_port_is_bridged(rocker_port))
- return 0;
- lw = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*lw));
- if (!lw)
- return -ENOMEM;
- INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
- lw->rocker_port = rocker_port;
- lw->trans = trans;
- lw->flags = flags;
- ether_addr_copy(lw->addr, addr);
- lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
- if (switchdev_trans_ph_prepare(trans))
- rocker_port_kfree(trans, lw);
- else
- schedule_work(&lw->work);
- return 0;
- }
- static struct rocker_fdb_tbl_entry *
- rocker_fdb_tbl_find(const struct rocker *rocker,
- const struct rocker_fdb_tbl_entry *match)
- {
- struct rocker_fdb_tbl_entry *found;
- hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
- if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
- return found;
- return NULL;
- }
- static int rocker_port_fdb(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- const unsigned char *addr,
- __be16 vlan_id, int flags)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_fdb_tbl_entry *fdb;
- struct rocker_fdb_tbl_entry *found;
- bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
- unsigned long lock_flags;
- fdb = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*fdb));
- if (!fdb)
- return -ENOMEM;
- fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
- fdb->touched = jiffies;
- fdb->key.rocker_port = rocker_port;
- ether_addr_copy(fdb->key.addr, addr);
- fdb->key.vlan_id = vlan_id;
- fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
- spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
- found = rocker_fdb_tbl_find(rocker, fdb);
- if (found) {
- found->touched = jiffies;
- if (removing) {
- rocker_port_kfree(trans, fdb);
- if (!switchdev_trans_ph_prepare(trans))
- hash_del(&found->entry);
- }
- } else if (!removing) {
- if (!switchdev_trans_ph_prepare(trans))
- hash_add(rocker->fdb_tbl, &fdb->entry,
- fdb->key_crc32);
- }
- spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
- /* Check if adding and already exists, or removing and can't find */
- if (!found != !removing) {
- rocker_port_kfree(trans, fdb);
- if (!found && removing)
- return 0;
- /* Refreshing existing to update aging timers */
- flags |= ROCKER_OP_FLAG_REFRESH;
- }
- return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
- }
- static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_fdb_tbl_entry *found;
- unsigned long lock_flags;
- struct hlist_node *tmp;
- int bkt;
- int err = 0;
- if (rocker_port->stp_state == BR_STATE_LEARNING ||
- rocker_port->stp_state == BR_STATE_FORWARDING)
- return 0;
- flags |= ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
- spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
- hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
- if (found->key.rocker_port != rocker_port)
- continue;
- if (!found->learned)
- continue;
- err = rocker_port_fdb_learn(rocker_port, trans, flags,
- found->key.addr,
- found->key.vlan_id);
- if (err)
- goto err_out;
- if (!switchdev_trans_ph_prepare(trans))
- hash_del(&found->entry);
- }
- err_out:
- spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
- return err;
- }
- static void rocker_fdb_cleanup(unsigned long data)
- {
- struct rocker *rocker = (struct rocker *)data;
- struct rocker_port *rocker_port;
- struct rocker_fdb_tbl_entry *entry;
- struct hlist_node *tmp;
- unsigned long next_timer = jiffies + rocker->ageing_time;
- unsigned long expires;
- unsigned long lock_flags;
- int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE |
- ROCKER_OP_FLAG_LEARNED;
- int bkt;
- spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
- hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, entry, entry) {
- if (!entry->learned)
- continue;
- rocker_port = entry->key.rocker_port;
- expires = entry->touched + rocker_port->ageing_time;
- if (time_before_eq(expires, jiffies)) {
- rocker_port_fdb_learn(rocker_port, NULL,
- flags, entry->key.addr,
- entry->key.vlan_id);
- hash_del(&entry->entry);
- } else if (time_before(expires, next_timer)) {
- next_timer = expires;
- }
- }
- spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
- mod_timer(&rocker->fdb_cleanup_timer, round_jiffies_up(next_timer));
- }
- static int rocker_port_router_mac(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- __be16 vlan_id)
- {
- u32 in_pport_mask = 0xffffffff;
- __be16 eth_type;
- const u8 *dst_mac_mask = ff_mac;
- __be16 vlan_id_mask = htons(0xffff);
- bool copy_to_cpu = false;
- int err;
- if (ntohs(vlan_id) == 0)
- vlan_id = rocker_port->internal_vlan_id;
- eth_type = htons(ETH_P_IP);
- err = rocker_flow_tbl_term_mac(rocker_port, trans,
- rocker_port->pport, in_pport_mask,
- eth_type, rocker_port->dev->dev_addr,
- dst_mac_mask, vlan_id, vlan_id_mask,
- copy_to_cpu, flags);
- if (err)
- return err;
- eth_type = htons(ETH_P_IPV6);
- err = rocker_flow_tbl_term_mac(rocker_port, trans,
- rocker_port->pport, in_pport_mask,
- eth_type, rocker_port->dev->dev_addr,
- dst_mac_mask, vlan_id, vlan_id_mask,
- copy_to_cpu, flags);
- return err;
- }
- static int rocker_port_fwding(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags)
- {
- bool pop_vlan;
- u32 out_pport;
- __be16 vlan_id;
- u16 vid;
- int err;
- /* Port will be forwarding-enabled if its STP state is LEARNING
- * or FORWARDING. Traffic from CPU can still egress, regardless of
- * port STP state. Use L2 interface group on port VLANs as a way
- * to toggle port forwarding: if forwarding is disabled, L2
- * interface group will not exist.
- */
- if (rocker_port->stp_state != BR_STATE_LEARNING &&
- rocker_port->stp_state != BR_STATE_FORWARDING)
- flags |= ROCKER_OP_FLAG_REMOVE;
- out_pport = rocker_port->pport;
- for (vid = 1; vid < VLAN_N_VID; vid++) {
- if (!test_bit(vid, rocker_port->vlan_bitmap))
- continue;
- vlan_id = htons(vid);
- pop_vlan = rocker_vlan_id_is_internal(vlan_id);
- err = rocker_group_l2_interface(rocker_port, trans, flags,
- vlan_id, out_pport, pop_vlan);
- if (err) {
- netdev_err(rocker_port->dev,
- "Error (%d) port VLAN l2 group for pport %d\n",
- err, out_pport);
- return err;
- }
- }
- return 0;
- }
- static int rocker_port_stp_update(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags,
- u8 state)
- {
- bool want[ROCKER_CTRL_MAX] = { 0, };
- bool prev_ctrls[ROCKER_CTRL_MAX];
- u8 uninitialized_var(prev_state);
- int err;
- int i;
- if (switchdev_trans_ph_prepare(trans)) {
- memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
- prev_state = rocker_port->stp_state;
- }
- if (rocker_port->stp_state == state)
- return 0;
- rocker_port->stp_state = state;
- switch (state) {
- case BR_STATE_DISABLED:
- /* port is completely disabled */
- break;
- case BR_STATE_LISTENING:
- case BR_STATE_BLOCKING:
- want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
- break;
- case BR_STATE_LEARNING:
- case BR_STATE_FORWARDING:
- if (!rocker_port_is_ovsed(rocker_port))
- want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
- want[ROCKER_CTRL_IPV4_MCAST] = true;
- want[ROCKER_CTRL_IPV6_MCAST] = true;
- if (rocker_port_is_bridged(rocker_port))
- want[ROCKER_CTRL_DFLT_BRIDGING] = true;
- else if (rocker_port_is_ovsed(rocker_port))
- want[ROCKER_CTRL_DFLT_OVS] = true;
- else
- want[ROCKER_CTRL_LOCAL_ARP] = true;
- break;
- }
- for (i = 0; i < ROCKER_CTRL_MAX; i++) {
- if (want[i] != rocker_port->ctrls[i]) {
- int ctrl_flags = flags |
- (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
- err = rocker_port_ctrl(rocker_port, trans, ctrl_flags,
- &rocker_ctrls[i]);
- if (err)
- goto err_out;
- rocker_port->ctrls[i] = want[i];
- }
- }
- err = rocker_port_fdb_flush(rocker_port, trans, flags);
- if (err)
- goto err_out;
- err = rocker_port_fwding(rocker_port, trans, flags);
- err_out:
- if (switchdev_trans_ph_prepare(trans)) {
- memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
- rocker_port->stp_state = prev_state;
- }
- return err;
- }
- static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags)
- {
- if (rocker_port_is_bridged(rocker_port))
- /* bridge STP will enable port */
- return 0;
- /* port is not bridged, so simulate going to FORWARDING state */
- return rocker_port_stp_update(rocker_port, trans, flags,
- BR_STATE_FORWARDING);
- }
- static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, int flags)
- {
- if (rocker_port_is_bridged(rocker_port))
- /* bridge STP will disable port */
- return 0;
- /* port is not bridged, so simulate going to DISABLED state */
- return rocker_port_stp_update(rocker_port, trans, flags,
- BR_STATE_DISABLED);
- }
- static struct rocker_internal_vlan_tbl_entry *
- rocker_internal_vlan_tbl_find(const struct rocker *rocker, int ifindex)
- {
- struct rocker_internal_vlan_tbl_entry *found;
- hash_for_each_possible(rocker->internal_vlan_tbl, found,
- entry, ifindex) {
- if (found->ifindex == ifindex)
- return found;
- }
- return NULL;
- }
- static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
- int ifindex)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_internal_vlan_tbl_entry *entry;
- struct rocker_internal_vlan_tbl_entry *found;
- unsigned long lock_flags;
- int i;
- entry = kzalloc(sizeof(*entry), GFP_KERNEL);
- if (!entry)
- return 0;
- entry->ifindex = ifindex;
- spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
- found = rocker_internal_vlan_tbl_find(rocker, ifindex);
- if (found) {
- kfree(entry);
- goto found;
- }
- found = entry;
- hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
- for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
- if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
- continue;
- found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
- goto found;
- }
- netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
- found:
- found->ref_count++;
- spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
- return found->vlan_id;
- }
- static void
- rocker_port_internal_vlan_id_put(const struct rocker_port *rocker_port,
- int ifindex)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_internal_vlan_tbl_entry *found;
- unsigned long lock_flags;
- unsigned long bit;
- spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
- found = rocker_internal_vlan_tbl_find(rocker, ifindex);
- if (!found) {
- netdev_err(rocker_port->dev,
- "ifindex (%d) not found in internal VLAN tbl\n",
- ifindex);
- goto not_found;
- }
- if (--found->ref_count <= 0) {
- bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
- clear_bit(bit, rocker->internal_vlan_bitmap);
- hash_del(&found->entry);
- kfree(found);
- }
- not_found:
- spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
- }
- static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
- struct switchdev_trans *trans, __be32 dst,
- int dst_len, const struct fib_info *fi,
- u32 tb_id, int flags)
- {
- const struct fib_nh *nh;
- __be16 eth_type = htons(ETH_P_IP);
- __be32 dst_mask = inet_make_mask(dst_len);
- __be16 internal_vlan_id = rocker_port->internal_vlan_id;
- u32 priority = fi->fib_priority;
- enum rocker_of_dpa_table_id goto_tbl =
- ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
- u32 group_id;
- bool nh_on_port;
- bool has_gw;
- u32 index;
- int err;
- /* XXX support ECMP */
- nh = fi->fib_nh;
- nh_on_port = (fi->fib_dev == rocker_port->dev);
- has_gw = !!nh->nh_gw;
- if (has_gw && nh_on_port) {
- err = rocker_port_ipv4_nh(rocker_port, trans, flags,
- nh->nh_gw, &index);
- if (err)
- return err;
- group_id = ROCKER_GROUP_L3_UNICAST(index);
- } else {
- /* Send to CPU for processing */
- group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
- }
- err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
- dst_mask, priority, goto_tbl,
- group_id, flags);
- if (err)
- netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
- err, &dst);
- return err;
- }
- /*****************
- * 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_port_fwd_enable(rocker_port, NULL, 0);
- if (err)
- goto err_fwd_enable;
- 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_fwd_enable:
- 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_port_fwd_disable(rocker_port, NULL,
- ROCKER_OP_FLAG_NOWAIT);
- 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;
- #define ROCKER_PORT_MIN_MTU 68
- #define ROCKER_PORT_MAX_MTU 9000
- if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU)
- return -EINVAL;
- 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, NULL, 0,
- 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 neighbour *n)
- {
- struct rocker_port *rocker_port = netdev_priv(n->dev);
- int flags = ROCKER_OP_FLAG_REMOVE | ROCKER_OP_FLAG_NOWAIT;
- __be32 ip_addr = *(__be32 *)n->primary_key;
- rocker_port_ipv4_neigh(rocker_port, NULL,
- flags, ip_addr, n->ha);
- }
- 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_bridge_getlink = switchdev_port_bridge_getlink,
- .ndo_bridge_setlink = switchdev_port_bridge_setlink,
- .ndo_bridge_dellink = switchdev_port_bridge_dellink,
- .ndo_fdb_add = switchdev_port_fdb_add,
- .ndo_fdb_del = switchdev_port_fdb_del,
- .ndo_fdb_dump = switchdev_port_fdb_dump,
- .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;
- 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:
- attr->u.brport_flags = rocker_port->brport_flags;
- break;
- default:
- return -EOPNOTSUPP;
- }
- return 0;
- }
- static int rocker_port_brport_flags_set(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- unsigned long brport_flags)
- {
- unsigned long orig_flags;
- int err = 0;
- orig_flags = rocker_port->brport_flags;
- rocker_port->brport_flags = brport_flags;
- if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING)
- err = rocker_port_set_learning(rocker_port, trans);
- if (switchdev_trans_ph_prepare(trans))
- rocker_port->brport_flags = orig_flags;
- return err;
- }
- static int rocker_port_bridge_ageing_time(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- u32 ageing_time)
- {
- struct rocker *rocker = rocker_port->rocker;
- if (!switchdev_trans_ph_prepare(trans)) {
- rocker_port->ageing_time = clock_t_to_jiffies(ageing_time);
- if (rocker_port->ageing_time < rocker->ageing_time)
- rocker->ageing_time = rocker_port->ageing_time;
- mod_timer(&rocker_port->rocker->fdb_cleanup_timer, jiffies);
- }
- return 0;
- }
- 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_port_stp_update(rocker_port, trans, 0,
- attr->u.stp_state);
- break;
- case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
- err = rocker_port_brport_flags_set(rocker_port, trans,
- attr->u.brport_flags);
- break;
- case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
- err = rocker_port_bridge_ageing_time(rocker_port, trans,
- attr->u.ageing_time);
- break;
- default:
- err = -EOPNOTSUPP;
- break;
- }
- return err;
- }
- static int rocker_port_vlan_add(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- u16 vid, u16 flags)
- {
- int err;
- /* XXX deal with flags for PVID and untagged */
- err = rocker_port_vlan(rocker_port, trans, 0, vid);
- if (err)
- return err;
- err = rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
- if (err)
- rocker_port_vlan(rocker_port, trans,
- ROCKER_OP_FLAG_REMOVE, vid);
- return err;
- }
- static int rocker_port_vlans_add(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- const struct switchdev_obj_port_vlan *vlan)
- {
- u16 vid;
- int err;
- for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
- err = rocker_port_vlan_add(rocker_port, trans,
- vid, vlan->flags);
- if (err)
- return err;
- }
- return 0;
- }
- static int rocker_port_fdb_add(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- const struct switchdev_obj_port_fdb *fdb)
- {
- __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
- int flags = 0;
- if (!rocker_port_is_bridged(rocker_port))
- return -EINVAL;
- return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
- }
- 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);
- const struct switchdev_obj_ipv4_fib *fib4;
- int err = 0;
- switch (obj->id) {
- case SWITCHDEV_OBJ_ID_PORT_VLAN:
- err = rocker_port_vlans_add(rocker_port, trans,
- SWITCHDEV_OBJ_PORT_VLAN(obj));
- break;
- case SWITCHDEV_OBJ_ID_IPV4_FIB:
- fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj);
- err = rocker_port_fib_ipv4(rocker_port, trans,
- htonl(fib4->dst), fib4->dst_len,
- fib4->fi, fib4->tb_id, 0);
- break;
- case SWITCHDEV_OBJ_ID_PORT_FDB:
- err = rocker_port_fdb_add(rocker_port, trans,
- SWITCHDEV_OBJ_PORT_FDB(obj));
- break;
- default:
- err = -EOPNOTSUPP;
- break;
- }
- return err;
- }
- static int rocker_port_vlan_del(struct rocker_port *rocker_port,
- u16 vid, u16 flags)
- {
- int err;
- err = rocker_port_router_mac(rocker_port, NULL,
- ROCKER_OP_FLAG_REMOVE, htons(vid));
- if (err)
- return err;
- return rocker_port_vlan(rocker_port, NULL,
- ROCKER_OP_FLAG_REMOVE, vid);
- }
- static int rocker_port_vlans_del(struct rocker_port *rocker_port,
- const struct switchdev_obj_port_vlan *vlan)
- {
- u16 vid;
- int err;
- for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
- err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
- if (err)
- return err;
- }
- return 0;
- }
- static int rocker_port_fdb_del(struct rocker_port *rocker_port,
- struct switchdev_trans *trans,
- const struct switchdev_obj_port_fdb *fdb)
- {
- __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
- int flags = ROCKER_OP_FLAG_REMOVE;
- if (!rocker_port_is_bridged(rocker_port))
- return -EINVAL;
- return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
- }
- static int rocker_port_obj_del(struct net_device *dev,
- const struct switchdev_obj *obj)
- {
- struct rocker_port *rocker_port = netdev_priv(dev);
- const struct switchdev_obj_ipv4_fib *fib4;
- int err = 0;
- switch (obj->id) {
- case SWITCHDEV_OBJ_ID_PORT_VLAN:
- err = rocker_port_vlans_del(rocker_port,
- SWITCHDEV_OBJ_PORT_VLAN(obj));
- break;
- case SWITCHDEV_OBJ_ID_IPV4_FIB:
- fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj);
- err = rocker_port_fib_ipv4(rocker_port, NULL,
- htonl(fib4->dst), fib4->dst_len,
- fib4->fi, fib4->tb_id,
- ROCKER_OP_FLAG_REMOVE);
- break;
- case SWITCHDEV_OBJ_ID_PORT_FDB:
- err = rocker_port_fdb_del(rocker_port, NULL,
- SWITCHDEV_OBJ_PORT_FDB(obj));
- break;
- default:
- err = -EOPNOTSUPP;
- break;
- }
- return err;
- }
- static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
- struct switchdev_obj_port_fdb *fdb,
- switchdev_obj_dump_cb_t *cb)
- {
- struct rocker *rocker = rocker_port->rocker;
- struct rocker_fdb_tbl_entry *found;
- struct hlist_node *tmp;
- unsigned long lock_flags;
- int bkt;
- int err = 0;
- spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
- hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
- if (found->key.rocker_port != rocker_port)
- continue;
- ether_addr_copy(fdb->addr, found->key.addr);
- fdb->ndm_state = NUD_REACHABLE;
- fdb->vid = rocker_port_vlan_to_vid(rocker_port,
- found->key.vlan_id);
- err = cb(&fdb->obj);
- if (err)
- break;
- }
- spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
- return err;
- }
- static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
- struct switchdev_obj_port_vlan *vlan,
- switchdev_obj_dump_cb_t *cb)
- {
- u16 vid;
- int err = 0;
- for (vid = 1; vid < VLAN_N_VID; vid++) {
- if (!test_bit(vid, rocker_port->vlan_bitmap))
- continue;
- vlan->flags = 0;
- if (rocker_vlan_id_is_internal(htons(vid)))
- vlan->flags |= BRIDGE_VLAN_INFO_PVID;
- vlan->vid_begin = vlan->vid_end = vid;
- err = cb(&vlan->obj);
- if (err)
- break;
- }
- return err;
- }
- static int rocker_port_obj_dump(struct net_device *dev,
- struct switchdev_obj *obj,
- switchdev_obj_dump_cb_t *cb)
- {
- const struct rocker_port *rocker_port = netdev_priv(dev);
- int err = 0;
- switch (obj->id) {
- case SWITCHDEV_OBJ_ID_PORT_FDB:
- err = rocker_port_fdb_dump(rocker_port,
- SWITCHDEV_OBJ_PORT_FDB(obj), cb);
- break;
- case SWITCHDEV_OBJ_ID_PORT_VLAN:
- err = rocker_port_vlan_dump(rocker_port,
- SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
- 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,
- .switchdev_port_obj_dump = rocker_port_obj_dump,
- };
- /********************
- * ethtool interface
- ********************/
- static int rocker_port_get_settings(struct net_device *dev,
- struct ethtool_cmd *ecmd)
- {
- struct rocker_port *rocker_port = netdev_priv(dev);
- return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
- }
- static int rocker_port_set_settings(struct net_device *dev,
- struct ethtool_cmd *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, NULL, 0,
- 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_settings = rocker_port_get_settings,
- .set_settings = rocker_port_set_settings,
- .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,
- };
- /*****************
- * 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 = rocker_port->dev->offload_fwd_mark;
- 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(napi);
- 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(const 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_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE);
- unregister_netdev(rocker_port->dev);
- free_netdev(rocker_port->dev);
- }
- 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);
- }
- }
- static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
- {
- const struct pci_dev *pdev = rocker->pdev;
- struct rocker_port *rocker_port;
- struct net_device *dev;
- u16 untagged_vid = 0;
- int err;
- dev = alloc_etherdev(sizeof(struct rocker_port));
- if (!dev)
- return -ENOMEM;
- 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;
- rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
- rocker_port->ageing_time = BR_DEFAULT_AGEING_TIME;
- 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_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;
- err = register_netdev(dev);
- if (err) {
- dev_err(&pdev->dev, "register_netdev failed\n");
- goto err_register_netdev;
- }
- rocker->ports[port_number] = rocker_port;
- switchdev_port_fwd_mark_set(rocker_port->dev, NULL, false);
- rocker_port_set_learning(rocker_port, NULL);
- err = rocker_port_ig_tbl(rocker_port, NULL, 0);
- if (err) {
- netdev_err(rocker_port->dev, "install ig port table failed\n");
- goto err_port_ig_tbl;
- }
- rocker_port->internal_vlan_id =
- rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
- err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
- if (err) {
- netdev_err(rocker_port->dev, "install untagged VLAN failed\n");
- goto err_untagged_vlan;
- }
- return 0;
- err_untagged_vlan:
- rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE);
- err_port_ig_tbl:
- rocker->ports[port_number] = NULL;
- unregister_netdev(dev);
- err_register_netdev:
- 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 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->hw.id = rocker_read64(rocker, SWITCH_ID);
- err = rocker_init_tbls(rocker);
- if (err) {
- dev_err(&pdev->dev, "cannot init rocker tables\n");
- goto err_init_tbls;
- }
- rocker->ageing_time = BR_DEFAULT_AGEING_TIME;
- setup_timer(&rocker->fdb_cleanup_timer, rocker_fdb_cleanup,
- (unsigned long) rocker);
- mod_timer(&rocker->fdb_cleanup_timer, jiffies);
- rocker->ageing_time = BR_DEFAULT_AGEING_TIME;
- 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:
- del_timer_sync(&rocker->fdb_cleanup_timer);
- rocker_free_tbls(rocker);
- err_init_tbls:
- 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);
- del_timer_sync(&rocker->fdb_cleanup_timer);
- rocker_free_tbls(rocker);
- rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
- rocker_remove_ports(rocker);
- 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(const struct net_device *dev)
- {
- return dev->netdev_ops == &rocker_port_netdev_ops;
- }
- static int rocker_port_bridge_join(struct rocker_port *rocker_port,
- struct net_device *bridge)
- {
- u16 untagged_vid = 0;
- int err;
- /* Port is joining bridge, so the internal VLAN for the
- * port is going to change to the bridge internal VLAN.
- * Let's remove untagged VLAN (vid=0) from port and
- * re-add once internal VLAN has changed.
- */
- err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
- if (err)
- return err;
- rocker_port_internal_vlan_id_put(rocker_port,
- rocker_port->dev->ifindex);
- rocker_port->internal_vlan_id =
- rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
- rocker_port->bridge_dev = bridge;
- switchdev_port_fwd_mark_set(rocker_port->dev, bridge, true);
- return rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
- }
- static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
- {
- u16 untagged_vid = 0;
- int err;
- err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
- if (err)
- return err;
- rocker_port_internal_vlan_id_put(rocker_port,
- rocker_port->bridge_dev->ifindex);
- rocker_port->internal_vlan_id =
- rocker_port_internal_vlan_id_get(rocker_port,
- rocker_port->dev->ifindex);
- switchdev_port_fwd_mark_set(rocker_port->dev, rocker_port->bridge_dev,
- false);
- rocker_port->bridge_dev = NULL;
- err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
- if (err)
- return err;
- if (rocker_port->dev->flags & IFF_UP)
- err = rocker_port_fwd_enable(rocker_port, NULL, 0);
- return err;
- }
- static int rocker_port_ovs_changed(struct rocker_port *rocker_port,
- struct net_device *master)
- {
- int err;
- rocker_port->bridge_dev = master;
- err = rocker_port_fwd_disable(rocker_port, NULL, 0);
- if (err)
- return err;
- err = rocker_port_fwd_enable(rocker_port, NULL, 0);
- return err;
- }
- static int rocker_port_master_linked(struct rocker_port *rocker_port,
- struct net_device *master)
- {
- int err = 0;
- if (netif_is_bridge_master(master))
- err = rocker_port_bridge_join(rocker_port, master);
- else if (netif_is_ovs_master(master))
- err = rocker_port_ovs_changed(rocker_port, master);
- return err;
- }
- static int rocker_port_master_unlinked(struct rocker_port *rocker_port)
- {
- int err = 0;
- if (rocker_port_is_bridged(rocker_port))
- err = rocker_port_bridge_leave(rocker_port);
- else if (rocker_port_is_ovsed(rocker_port))
- err = rocker_port_ovs_changed(rocker_port, NULL);
- return err;
- }
- 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_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_port_master_unlinked(rocker_port);
- if (err)
- netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
- err);
- }
- break;
- }
- 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_neigh_update(struct net_device *dev, struct neighbour *n)
- {
- struct rocker_port *rocker_port = netdev_priv(dev);
- int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) |
- ROCKER_OP_FLAG_NOWAIT;
- __be32 ip_addr = *(__be32 *)n->primary_key;
- return rocker_port_ipv4_neigh(rocker_port, NULL, flags, ip_addr, n->ha);
- }
- static int rocker_netevent_event(struct notifier_block *unused,
- unsigned long event, void *ptr)
- {
- 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;
- err = rocker_neigh_update(dev, n);
- if (err)
- netdev_warn(dev,
- "failed to handle neigh update (err %d)\n",
- err);
- break;
- }
- return NOTIFY_DONE;
- }
- static struct notifier_block rocker_netevent_nb __read_mostly = {
- .notifier_call = rocker_netevent_event,
- };
- /***********************
- * Module init and exit
- ***********************/
- static int __init rocker_module_init(void)
- {
- int err;
- register_netdevice_notifier(&rocker_netdevice_nb);
- register_netevent_notifier(&rocker_netevent_nb);
- err = pci_register_driver(&rocker_pci_driver);
- if (err)
- goto err_pci_register_driver;
- return 0;
- err_pci_register_driver:
- unregister_netevent_notifier(&rocker_netevent_nb);
- unregister_netdevice_notifier(&rocker_netdevice_nb);
- return err;
- }
- static void __exit rocker_module_exit(void)
- {
- unregister_netevent_notifier(&rocker_netevent_nb);
- unregister_netdevice_notifier(&rocker_netdevice_nb);
- pci_unregister_driver(&rocker_pci_driver);
- }
- module_init(rocker_module_init);
- module_exit(rocker_module_exit);
- MODULE_LICENSE("GPL v2");
- MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
- MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
- MODULE_DESCRIPTION("Rocker switch device driver");
- MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);
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