/* * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver * Copyright (c) 2014 Jiri Pirko * Copyright (c) 2014 Scott Feldman * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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; struct rocker_fdb_tbl_key { u32 pport; 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; DEFINE_DMA_UNMAP_ADDR(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_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; 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; spinlock_t cmd_ring_lock; struct rocker_dma_ring_info cmd_ring; struct rocker_dma_ring_info event_ring; DECLARE_HASHTABLE(flow_tbl, 16); spinlock_t flow_tbl_lock; u64 flow_tbl_next_cookie; DECLARE_HASHTABLE(group_tbl, 16); spinlock_t group_tbl_lock; DECLARE_HASHTABLE(fdb_tbl, 16); spinlock_t fdb_tbl_lock; unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN]; DECLARE_HASHTABLE(internal_vlan_tbl, 8); spinlock_t internal_vlan_tbl_lock; DECLARE_HASHTABLE(neigh_tbl, 16); spinlock_t neigh_tbl_lock; 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(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(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(struct rocker_port *rocker_port) { return !!rocker_port->bridge_dev; } 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(gfp_t gfp) { struct rocker_wait *wait; wait = kmalloc(sizeof(*wait), gfp); if (!wait) return NULL; rocker_wait_init(wait); return wait; } static void rocker_wait_destroy(struct rocker_wait *work) { kfree(work); } 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(struct rocker *rocker, unsigned int vector) { return rocker->msix_entries[vector].vector; } static u32 rocker_msix_tx_vector(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(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(struct rocker *rocker) { 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(struct rocker *rocker, struct rocker_wait *wait, u32 test_type, dma_addr_t dma_handle, unsigned char *buf, unsigned char *expect, size_t size) { 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(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(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(struct rocker *rocker) { 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(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] = (struct rocker_tlv *) tlv; } } static void rocker_tlv_parse_nested(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(struct rocker_tlv **tb, int maxtype, 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) { return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value); } static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info, int attrtype, u16 value) { return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value); } static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info, int attrtype, __be16 value) { return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value); } static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info, int attrtype, u32 value) { return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value); } static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info, int attrtype, __be32 value) { return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value); } static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info, int attrtype, u64 value) { return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value); } 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, struct rocker_tlv *start) { desc_info->tlv_size = (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(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(struct rocker_desc_info *desc_info) { desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN; } static bool rocker_desc_gen(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(struct rocker_desc_info *desc_info) { return (void *)(uintptr_t)desc_info->desc->cookie; } static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info, void *ptr) { desc_info->desc->cookie = (uintptr_t) ptr; } static struct rocker_desc_info * rocker_desc_head_get(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(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(struct rocker *rocker, struct rocker_dma_ring_info *info, 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(struct rocker *rocker, 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(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(struct rocker *rocker, 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(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(struct rocker *rocker, 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--) { 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(struct rocker *rocker, struct rocker_dma_ring_info *info, int direction) { struct pci_dev *pdev = rocker->pdev; int i; for (i = 0; i < info->size; i++) { 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) { 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(struct rocker *rocker, struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, struct sk_buff *skb, size_t buf_len) { 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(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(struct rocker *rocker, 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, 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(struct rocker *rocker, 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(struct rocker *rocker, struct rocker_desc_info *desc_info) { 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(struct rocker *rocker, struct rocker_port *rocker_port) { struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; int i; int err; for (i = 0; i < rx_ring->size; i++) { err = rocker_dma_rx_ring_skb_alloc(rocker, 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(struct rocker *rocker, struct rocker_port *rocker_port) { struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; 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, 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, 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(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; 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(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(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(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(struct rocker *rocker, const struct rocker_tlv *info) { 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; } #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 int rocker_port_fdb(struct rocker_port *rocker_port, const unsigned char *addr, __be16 vlan_id, int flags); static int rocker_event_mac_vlan_seen(struct rocker *rocker, const struct rocker_tlv *info) { struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1]; unsigned int port_number; struct rocker_port *rocker_port; 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, addr, vlan_id, flags); } static int rocker_event_process(struct rocker *rocker, struct rocker_desc_info *desc_info) { struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1]; 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; struct pci_dev *pdev = rocker->pdev; 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_cb_t)(struct rocker *rocker, struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv); static int rocker_cmd_exec(struct rocker *rocker, struct rocker_port *rocker_port, rocker_cmd_cb_t prepare, void *prepare_priv, rocker_cmd_cb_t process, void *process_priv, bool nowait) { struct rocker_desc_info *desc_info; struct rocker_wait *wait; unsigned long flags; int err; wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL); if (!wait) return -ENOMEM; wait->nowait = nowait; spin_lock_irqsave(&rocker->cmd_ring_lock, flags); desc_info = rocker_desc_head_get(&rocker->cmd_ring); if (!desc_info) { spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags); err = -EAGAIN; goto out; } err = prepare(rocker, rocker_port, desc_info, prepare_priv); if (err) { spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags); goto out; } rocker_desc_cookie_ptr_set(desc_info, wait); rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info); spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags); if (nowait) return 0; if (!rocker_wait_event_timeout(wait, HZ / 10)) return -EIO; err = rocker_desc_err(desc_info); if (err) return err; if (process) err = process(rocker, rocker_port, desc_info, process_priv); rocker_desc_gen_clear(desc_info); out: rocker_wait_destroy(wait); return err; } static int rocker_cmd_get_port_settings_prep(struct rocker *rocker, 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(struct rocker *rocker, struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { struct ethtool_cmd *ecmd = priv; struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; 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(struct rocker *rocker, struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { unsigned char *macaddr = priv; struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; struct rocker_tlv *attr; rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); if (!attrs[ROCKER_TLV_CMD_INFO]) return -EIO; rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, attrs[ROCKER_TLV_CMD_INFO]); attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]; if (!attr) return -EIO; if (rocker_tlv_len(attr) != ETH_ALEN) return -EINVAL; ether_addr_copy(macaddr, rocker_tlv_data(attr)); return 0; } static int rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker, 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(struct rocker *rocker, struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { 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_learning_prep(struct rocker *rocker, 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->rocker, rocker_port, rocker_cmd_get_port_settings_prep, NULL, rocker_cmd_get_port_settings_ethtool_proc, ecmd, false); } static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port, unsigned char *macaddr) { return rocker_cmd_exec(rocker_port->rocker, rocker_port, rocker_cmd_get_port_settings_prep, NULL, rocker_cmd_get_port_settings_macaddr_proc, macaddr, false); } static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port, struct ethtool_cmd *ecmd) { return rocker_cmd_exec(rocker_port->rocker, rocker_port, rocker_cmd_set_port_settings_ethtool_prep, ecmd, NULL, NULL, false); } static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port, unsigned char *macaddr) { return rocker_cmd_exec(rocker_port->rocker, rocker_port, rocker_cmd_set_port_settings_macaddr_prep, macaddr, NULL, NULL, false); } static int rocker_port_set_learning(struct rocker_port *rocker_port) { return rocker_cmd_exec(rocker_port->rocker, rocker_port, rocker_cmd_set_port_learning_prep, NULL, NULL, NULL, false); } static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info, 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, 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, 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, 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, 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, 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(struct rocker *rocker, struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { 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(struct rocker *rocker, 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, 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, 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, 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(struct rocker *rocker, 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(struct rocker *rocker, 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(struct rocker *rocker, 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 rocker_flow_tbl_entry *match, bool nowait) { 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 flags; match->key_crc32 = crc32(~0, &match->key, key_len); spin_lock_irqsave(&rocker->flow_tbl_lock, flags); found = rocker_flow_tbl_find(rocker, match); if (found) { match->cookie = found->cookie; hash_del(&found->entry); kfree(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; } hash_add(rocker->flow_tbl, &found->entry, found->key_crc32); spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags); return rocker_cmd_exec(rocker, rocker_port, rocker_cmd_flow_tbl_add, found, NULL, NULL, nowait); } static int rocker_flow_tbl_del(struct rocker_port *rocker_port, struct rocker_flow_tbl_entry *match, bool nowait) { 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 flags; int err = 0; match->key_crc32 = crc32(~0, &match->key, key_len); spin_lock_irqsave(&rocker->flow_tbl_lock, flags); found = rocker_flow_tbl_find(rocker, match); if (found) { hash_del(&found->entry); found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL; } spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags); kfree(match); if (found) { err = rocker_cmd_exec(rocker, rocker_port, rocker_cmd_flow_tbl_del, found, NULL, NULL, nowait); kfree(found); } return err; } static gfp_t rocker_op_flags_gfp(int flags) { return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL; } static int rocker_flow_tbl_do(struct rocker_port *rocker_port, int flags, struct rocker_flow_tbl_entry *entry) { bool nowait = flags & ROCKER_OP_FLAG_NOWAIT; if (flags & ROCKER_OP_FLAG_REMOVE) return rocker_flow_tbl_del(rocker_port, entry, nowait); else return rocker_flow_tbl_add(rocker_port, entry, nowait); } static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port, int flags, u32 in_pport, u32 in_pport_mask, enum rocker_of_dpa_table_id goto_tbl) { struct rocker_flow_tbl_entry *entry; entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 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, flags, entry); } static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port, 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 = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 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, flags, entry); } static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port, 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 = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 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, flags, entry); } static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port, 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 = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 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 (memcmp(eth_dst_mask, ff_mac, ETH_ALEN)) 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, flags, entry); } static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port, __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 = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 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, flags, entry); } static int rocker_flow_tbl_acl(struct rocker_port *rocker_port, 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 = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); if (!entry) return -ENOMEM; priority = ROCKER_PRIORITY_ACL_NORMAL; if (eth_dst && eth_dst_mask) { if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0) 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, flags, entry); } static struct rocker_group_tbl_entry * rocker_group_tbl_find(struct rocker *rocker, 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 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: kfree(entry->group_ids); break; default: break; } kfree(entry); } static int rocker_group_tbl_add(struct rocker_port *rocker_port, struct rocker_group_tbl_entry *match, bool nowait) { struct rocker *rocker = rocker_port->rocker; struct rocker_group_tbl_entry *found; unsigned long flags; spin_lock_irqsave(&rocker->group_tbl_lock, flags); found = rocker_group_tbl_find(rocker, match); if (found) { hash_del(&found->entry); rocker_group_tbl_entry_free(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; } hash_add(rocker->group_tbl, &found->entry, found->group_id); spin_unlock_irqrestore(&rocker->group_tbl_lock, flags); return rocker_cmd_exec(rocker, rocker_port, rocker_cmd_group_tbl_add, found, NULL, NULL, nowait); } static int rocker_group_tbl_del(struct rocker_port *rocker_port, struct rocker_group_tbl_entry *match, bool nowait) { struct rocker *rocker = rocker_port->rocker; struct rocker_group_tbl_entry *found; unsigned long flags; int err = 0; spin_lock_irqsave(&rocker->group_tbl_lock, flags); found = rocker_group_tbl_find(rocker, match); if (found) { hash_del(&found->entry); found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL; } spin_unlock_irqrestore(&rocker->group_tbl_lock, flags); rocker_group_tbl_entry_free(match); if (found) { err = rocker_cmd_exec(rocker, rocker_port, rocker_cmd_group_tbl_del, found, NULL, NULL, nowait); rocker_group_tbl_entry_free(found); } return err; } static int rocker_group_tbl_do(struct rocker_port *rocker_port, int flags, struct rocker_group_tbl_entry *entry) { bool nowait = flags & ROCKER_OP_FLAG_NOWAIT; if (flags & ROCKER_OP_FLAG_REMOVE) return rocker_group_tbl_del(rocker_port, entry, nowait); else return rocker_group_tbl_add(rocker_port, entry, nowait); } static int rocker_group_l2_interface(struct rocker_port *rocker_port, int flags, __be16 vlan_id, u32 out_pport, int pop_vlan) { struct rocker_group_tbl_entry *entry; entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 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, flags, entry); } static int rocker_group_l2_fan_out(struct rocker_port *rocker_port, int flags, u8 group_count, u32 *group_ids, u32 group_id) { struct rocker_group_tbl_entry *entry; entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); if (!entry) return -ENOMEM; entry->group_id = group_id; entry->group_count = group_count; entry->group_ids = kcalloc(group_count, sizeof(u32), rocker_op_flags_gfp(flags)); if (!entry->group_ids) { kfree(entry); return -ENOMEM; } memcpy(entry->group_ids, group_ids, group_count * sizeof(u32)); return rocker_group_tbl_do(rocker_port, flags, entry); } static int rocker_group_l2_flood(struct rocker_port *rocker_port, int flags, __be16 vlan_id, u8 group_count, u32 *group_ids, u32 group_id) { return rocker_group_l2_fan_out(rocker_port, flags, group_count, group_ids, group_id); } static int rocker_group_l3_unicast(struct rocker_port *rocker_port, int flags, u32 index, u8 *src_mac, u8 *dst_mac, __be16 vlan_id, bool ttl_check, u32 pport) { struct rocker_group_tbl_entry *entry; entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 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, flags, entry); } static struct rocker_neigh_tbl_entry * rocker_neigh_tbl_find(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 rocker_neigh_tbl_entry *entry) { entry->index = rocker->neigh_tbl_next_index++; entry->ref_count++; hash_add(rocker->neigh_tbl, &entry->entry, be32_to_cpu(entry->ip_addr)); } static void _rocker_neigh_del(struct rocker *rocker, struct rocker_neigh_tbl_entry *entry) { if (--entry->ref_count == 0) { hash_del(&entry->entry); kfree(entry); } } static void _rocker_neigh_update(struct rocker *rocker, struct rocker_neigh_tbl_entry *entry, u8 *eth_dst, bool ttl_check) { if (eth_dst) { ether_addr_copy(entry->eth_dst, eth_dst); entry->ttl_check = ttl_check; } else { entry->ref_count++; } } static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port, int flags, __be32 ip_addr, 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 = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 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, entry); } else if (removing) { memcpy(entry, found, sizeof(*entry)); _rocker_neigh_del(rocker, found); } else if (updating) { _rocker_neigh_update(rocker, found, 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, 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, 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) kfree(entry); return err; } static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port, __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 (!n) return -ENOMEM; /* 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, 0, ip_addr, n->ha); else neigh_event_send(n, NULL); return err; } static int rocker_port_ipv4_nh(struct rocker_port *rocker_port, 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 = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); 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, entry); *index = entry->index; resolved = false; } else if (removing) { _rocker_neigh_del(rocker, found); } else if (updating) { _rocker_neigh_update(rocker, found, NULL, false); resolved = !is_zero_ether_addr(found->eth_dst); } else { err = -ENOENT; } spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags); if (!adding) kfree(entry); if (err) return err; /* Resolved means neigh ip_addr is resolved to neigh mac. */ if (!resolved) err = rocker_port_ipv4_resolve(rocker_port, ip_addr); return err; } static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port, int flags, __be16 vlan_id) { struct rocker_port *p; struct rocker *rocker = rocker_port->rocker; u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0); u32 group_ids[ROCKER_FP_PORTS_MAX]; u8 group_count = 0; int err; int i; /* 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 (!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) return 0; err = rocker_group_l2_flood(rocker_port, 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); return err; } static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port, int flags, __be16 vlan_id, bool pop_vlan) { 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, 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 (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, 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, }, }; static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port, int flags, struct rocker_ctrl *ctrl, __be16 vlan_id) { u32 in_pport = rocker_port->pport; u32 in_pport_mask = 0xffffffff; u32 out_pport = 0; u8 *eth_src = NULL; 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, 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, int flags, 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, 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, int flags, 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, 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, int flags, struct rocker_ctrl *ctrl, __be16 vlan_id) { if (ctrl->acl) return rocker_port_ctrl_vlan_acl(rocker_port, flags, ctrl, vlan_id); if (ctrl->bridge) return rocker_port_ctrl_vlan_bridge(rocker_port, flags, ctrl, vlan_id); if (ctrl->term) return rocker_port_ctrl_vlan_term(rocker_port, flags, ctrl, vlan_id); return -EOPNOTSUPP; } static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port, 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, flags, &rocker_ctrls[i], vlan_id); if (err) return err; } } return err; } static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags, 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, flags, ctrl, htons(vid)); if (err) break; } return err; } static int rocker_port_vlan(struct rocker_port *rocker_port, 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_and_set_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap)) return 0; /* already added */ else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap)) return 0; /* already removed */ if (adding) { err = rocker_port_ctrl_vlan_add(rocker_port, flags, internal_vlan_id); if (err) { netdev_err(rocker_port->dev, "Error (%d) port ctrl vlan add\n", err); return err; } } err = rocker_port_vlan_l2_groups(rocker_port, flags, internal_vlan_id, untagged); if (err) { netdev_err(rocker_port->dev, "Error (%d) port VLAN l2 groups\n", err); return err; } err = rocker_port_vlan_flood_group(rocker_port, flags, internal_vlan_id); if (err) { netdev_err(rocker_port->dev, "Error (%d) port VLAN l2 flood group\n", err); return err; } err = rocker_flow_tbl_vlan(rocker_port, 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); return err; } static int rocker_port_ig_tbl(struct rocker_port *rocker_port, 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, 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 net_device *dev; int flags; u8 addr[ETH_ALEN]; u16 vid; }; static void rocker_port_fdb_learn_work(struct work_struct *work) { 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 netdev_switch_notifier_fdb_info info; info.addr = lw->addr; info.vid = lw->vid; if (learned && removing) call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL, lw->dev, &info.info); else if (learned && !removing) call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_ADD, lw->dev, &info.info); kfree(work); } static int rocker_port_fdb_learn(struct rocker_port *rocker_port, 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, 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 = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags)); if (!lw) return -ENOMEM; INIT_WORK(&lw->work, rocker_port_fdb_learn_work); lw->dev = rocker_port->dev; lw->flags = flags; ether_addr_copy(lw->addr, addr); lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id); schedule_work(&lw->work); return 0; } static struct rocker_fdb_tbl_entry * rocker_fdb_tbl_find(struct rocker *rocker, 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, 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 = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags)); if (!fdb) return -ENOMEM; fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED); fdb->key.pport = rocker_port->pport; 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 (removing && found) { kfree(fdb); hash_del(&found->entry); } else if (!removing && !found) { 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) { kfree(fdb); if (!found && removing) return 0; /* Refreshing existing to update aging timers */ flags |= ROCKER_OP_FLAG_REFRESH; } return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id); } static int rocker_port_fdb_flush(struct rocker_port *rocker_port) { struct rocker *rocker = rocker_port->rocker; struct rocker_fdb_tbl_entry *found; unsigned long lock_flags; int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE; 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; spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags); hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) { if (found->key.pport != rocker_port->pport) continue; if (!found->learned) continue; err = rocker_port_fdb_learn(rocker_port, flags, found->key.addr, found->key.vlan_id); if (err) goto err_out; hash_del(&found->entry); } err_out: spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags); return err; } static int rocker_port_router_mac(struct rocker_port *rocker_port, 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, 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, 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) { bool pop_vlan; u32 out_pport; __be16 vlan_id; u16 vid; int flags = ROCKER_OP_FLAG_NOWAIT; 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, 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, u8 state) { bool want[ROCKER_CTRL_MAX] = { 0, }; int flags; int err; int i; 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: 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 want[ROCKER_CTRL_LOCAL_ARP] = true; break; } for (i = 0; i < ROCKER_CTRL_MAX; i++) { if (want[i] != rocker_port->ctrls[i]) { flags = ROCKER_OP_FLAG_NOWAIT | (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE); err = rocker_port_ctrl(rocker_port, flags, &rocker_ctrls[i]); if (err) return err; rocker_port->ctrls[i] = want[i]; } } err = rocker_port_fdb_flush(rocker_port); if (err) return err; return rocker_port_fwding(rocker_port); } static int rocker_port_fwd_enable(struct rocker_port *rocker_port) { 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, BR_STATE_FORWARDING); } static int rocker_port_fwd_disable(struct rocker_port *rocker_port) { 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, BR_STATE_DISABLED); } static struct rocker_internal_vlan_tbl_entry * rocker_internal_vlan_tbl_find(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(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, __be32 dst, int dst_len, struct fib_info *fi, u32 tb_id, int flags) { 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, 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, 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); if (err) goto err_fwd_enable; napi_enable(&rocker_port->napi_tx); napi_enable(&rocker_port->napi_rx); 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); 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(struct rocker_port *rocker_port, struct rocker_desc_info *desc_info) { struct rocker *rocker = rocker_port->rocker; struct pci_dev *pdev = rocker->pdev; 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) { 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(struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, char *buf, size_t buf_len) { 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) goto nest_cancel; 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_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) { struct rocker_port *rocker_port = netdev_priv(dev); int err; err = rocker_port_vlan(rocker_port, 0, vid); if (err) return err; return rocker_port_router_mac(rocker_port, 0, htons(vid)); } static int rocker_port_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) { struct rocker_port *rocker_port = netdev_priv(dev); int err; err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE, htons(vid)); if (err) return err; return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid); } static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, const unsigned char *addr, u16 vid, u16 nlm_flags) { struct rocker_port *rocker_port = netdev_priv(dev); __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL); int flags = 0; if (!rocker_port_is_bridged(rocker_port)) return -EINVAL; return rocker_port_fdb(rocker_port, addr, vlan_id, flags); } static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, const unsigned char *addr, u16 vid) { struct rocker_port *rocker_port = netdev_priv(dev); __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL); int flags = ROCKER_OP_FLAG_REMOVE; if (!rocker_port_is_bridged(rocker_port)) return -EINVAL; return rocker_port_fdb(rocker_port, addr, vlan_id, flags); } static int rocker_fdb_fill_info(struct sk_buff *skb, struct rocker_port *rocker_port, const unsigned char *addr, u16 vid, u32 portid, u32 seq, int type, unsigned int flags) { struct nlmsghdr *nlh; struct ndmsg *ndm; nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags); if (!nlh) return -EMSGSIZE; ndm = nlmsg_data(nlh); ndm->ndm_family = AF_BRIDGE; ndm->ndm_pad1 = 0; ndm->ndm_pad2 = 0; ndm->ndm_flags = NTF_SELF; ndm->ndm_type = 0; ndm->ndm_ifindex = rocker_port->dev->ifindex; ndm->ndm_state = NUD_REACHABLE; if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) goto nla_put_failure; if (vid && nla_put_u16(skb, NDA_VLAN, vid)) goto nla_put_failure; nlmsg_end(skb, nlh); return 0; nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; } static int rocker_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, struct net_device *dev, struct net_device *filter_dev, int idx) { struct rocker_port *rocker_port = netdev_priv(dev); struct rocker *rocker = rocker_port->rocker; struct rocker_fdb_tbl_entry *found; struct hlist_node *tmp; int bkt; unsigned long lock_flags; const unsigned char *addr; u16 vid; int err; spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags); hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) { if (found->key.pport != rocker_port->pport) continue; if (idx < cb->args[0]) goto skip; addr = found->key.addr; vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id); err = rocker_fdb_fill_info(skb, rocker_port, addr, vid, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWNEIGH, NLM_F_MULTI); if (err < 0) break; skip: ++idx; } spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags); return idx; } static int rocker_port_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) { struct rocker_port *rocker_port = netdev_priv(dev); struct nlattr *protinfo; struct nlattr *attr; int err; protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); if (protinfo) { attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING); if (attr) { if (nla_len(attr) < sizeof(u8)) return -EINVAL; if (nla_get_u8(attr)) rocker_port->brport_flags |= BR_LEARNING; else rocker_port->brport_flags &= ~BR_LEARNING; err = rocker_port_set_learning(rocker_port); if (err) return err; } attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC); if (attr) { if (nla_len(attr) < sizeof(u8)) return -EINVAL; if (nla_get_u8(attr)) rocker_port->brport_flags |= BR_LEARNING_SYNC; else rocker_port->brport_flags &= ~BR_LEARNING_SYNC; } } return 0; } static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, u32 filter_mask) { struct rocker_port *rocker_port = netdev_priv(dev); u16 mode = BRIDGE_MODE_UNDEF; u32 mask = BR_LEARNING | BR_LEARNING_SYNC; return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, rocker_port->brport_flags, mask); } 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_vlan_rx_add_vid = rocker_port_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = rocker_port_vlan_rx_kill_vid, .ndo_fdb_add = rocker_port_fdb_add, .ndo_fdb_del = rocker_port_fdb_del, .ndo_fdb_dump = rocker_port_fdb_dump, .ndo_bridge_setlink = rocker_port_bridge_setlink, .ndo_bridge_getlink = rocker_port_bridge_getlink, }; /******************** * swdev interface ********************/ static int rocker_port_swdev_parent_id_get(struct net_device *dev, struct netdev_phys_item_id *psid) { struct rocker_port *rocker_port = netdev_priv(dev); struct rocker *rocker = rocker_port->rocker; psid->id_len = sizeof(rocker->hw.id); memcpy(&psid->id, &rocker->hw.id, psid->id_len); return 0; } static int rocker_port_swdev_port_stp_update(struct net_device *dev, u8 state) { struct rocker_port *rocker_port = netdev_priv(dev); return rocker_port_stp_update(rocker_port, state); } static int rocker_port_swdev_fib_ipv4_add(struct net_device *dev, __be32 dst, int dst_len, struct fib_info *fi, u8 tos, u8 type, u32 nlflags, u32 tb_id) { struct rocker_port *rocker_port = netdev_priv(dev); int flags = 0; return rocker_port_fib_ipv4(rocker_port, dst, dst_len, fi, tb_id, flags); } static int rocker_port_swdev_fib_ipv4_del(struct net_device *dev, __be32 dst, int dst_len, struct fib_info *fi, u8 tos, u8 type, u32 tb_id) { struct rocker_port *rocker_port = netdev_priv(dev); int flags = ROCKER_OP_FLAG_REMOVE; return rocker_port_fib_ipv4(rocker_port, dst, dst_len, fi, tb_id, flags); } static const struct swdev_ops rocker_port_swdev_ops = { .swdev_parent_id_get = rocker_port_swdev_parent_id_get, .swdev_port_stp_update = rocker_port_swdev_port_stp_update, .swdev_fib_ipv4_add = rocker_port_swdev_fib_ipv4_add, .swdev_fib_ipv4_del = rocker_port_swdev_fib_ipv4_del, }; /******************** * 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(struct rocker *rocker, 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(struct rocker *rocker, struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) { struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1]; 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->rocker, rocker_port, rocker_cmd_get_port_stats_prep, NULL, rocker_cmd_get_port_stats_ethtool_proc, priv, false); } 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; } return; } 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); struct rocker *rocker = rocker_port->rocker; 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(struct rocker *rocker, struct rocker_port *rocker_port, struct rocker_desc_info *desc_info) { struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); size_t rx_len; if (!skb) return -ENOENT; rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); if (!attrs[ROCKER_TLV_RX_FRAG_LEN]) return -EINVAL; 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); 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, 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); 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(struct rocker_port *rocker_port) { struct rocker *rocker = rocker_port->rocker; u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS); bool link_up; link_up = link_status & (1 << rocker_port->pport); if (link_up) netif_carrier_on(rocker_port->dev); else netif_carrier_off(rocker_port->dev); } static void rocker_remove_ports(struct rocker *rocker) { struct rocker_port *rocker_port; int i; for (i = 0; i < rocker->port_count; i++) { rocker_port = rocker->ports[i]; rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE); unregister_netdev(rocker_port->dev); } kfree(rocker->ports); } static void rocker_port_dev_addr_init(struct rocker *rocker, struct rocker_port *rocker_port) { 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) { struct pci_dev *pdev = rocker->pdev; struct rocker_port *rocker_port; struct net_device *dev; int err; dev = alloc_etherdev(sizeof(struct rocker_port)); if (!dev) return -ENOMEM; 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_dev_addr_init(rocker, rocker_port); dev->netdev_ops = &rocker_port_netdev_ops; dev->ethtool_ops = &rocker_port_ethtool_ops; dev->swdev_ops = &rocker_port_swdev_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_HW_VLAN_CTAG_FILTER | NETIF_F_HW_SWITCH_OFFLOAD; err = register_netdev(dev); if (err) { dev_err(&pdev->dev, "register_netdev failed\n"); goto err_register_netdev; } rocker->ports[port_number] = rocker_port; rocker_port_set_learning(rocker_port); rocker_port->internal_vlan_id = rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex); err = rocker_port_ig_tbl(rocker_port, 0); if (err) { dev_err(&pdev->dev, "install ig port table failed\n"); goto err_port_ig_tbl; } return 0; err_port_ig_tbl: 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 = kmalloc(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(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"); 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; } 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 %016llx\n", rocker->hw.id); return 0; err_probe_ports: 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); 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(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) { int err; rocker_port_internal_vlan_id_put(rocker_port, rocker_port->dev->ifindex); rocker_port->bridge_dev = bridge; /* Use bridge internal VLAN ID for untagged pkts */ err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0); if (err) return err; rocker_port->internal_vlan_id = rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex); return rocker_port_vlan(rocker_port, 0, 0); } static int rocker_port_bridge_leave(struct rocker_port *rocker_port) { int err; rocker_port_internal_vlan_id_put(rocker_port, rocker_port->bridge_dev->ifindex); rocker_port->bridge_dev = NULL; /* Use port internal VLAN ID for untagged pkts */ err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0); if (err) return err; rocker_port->internal_vlan_id = rocker_port_internal_vlan_id_get(rocker_port, rocker_port->dev->ifindex); err = rocker_port_vlan(rocker_port, 0, 0); if (err) return err; if (rocker_port->dev->flags & IFF_UP) err = rocker_port_fwd_enable(rocker_port); return err; } static int rocker_port_master_changed(struct net_device *dev) { struct rocker_port *rocker_port = netdev_priv(dev); struct net_device *master = netdev_master_upper_dev_get(dev); int err = 0; if (master && master->rtnl_link_ops && !strcmp(master->rtnl_link_ops->kind, "bridge")) err = rocker_port_bridge_join(rocker_port, master); else err = rocker_port_bridge_leave(rocker_port); return err; } static int rocker_netdevice_event(struct notifier_block *unused, unsigned long event, void *ptr) { struct net_device *dev; int err; switch (event) { case NETDEV_CHANGEUPPER: dev = netdev_notifier_info_to_dev(ptr); if (!rocker_port_dev_check(dev)) return NOTIFY_DONE; err = rocker_port_master_changed(dev); if (err) netdev_warn(dev, "failed to reflect master change (err %d)\n", err); break; } 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; __be32 ip_addr = *(__be32 *)n->primary_key; return rocker_port_ipv4_neigh(rocker_port, 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_netdevice_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 "); MODULE_AUTHOR("Scott Feldman "); MODULE_DESCRIPTION("Rocker switch device driver"); MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);