This patch introduces the first driver to benefit from the switchdev infrastructure and to implement newly introduced switch ndos. This is a driver for emulated switch chip implemented in qemu: https://github.com/sfeldma/qemu-rocker/
This patch is a result of joint work with Scott Feldman. Signed-off-by: Scott Feldman <sfel...@cumulusnetworks.com> Signed-off-by: Jiri Pirko <j...@resnulli.us> --- MAINTAINERS | 6 + drivers/net/ethernet/Kconfig | 1 + drivers/net/ethernet/Makefile | 1 + drivers/net/ethernet/rocker/Kconfig | 29 + drivers/net/ethernet/rocker/Makefile | 5 + drivers/net/ethernet/rocker/rocker.c | 3553 ++++++++++++++++++++++++++++++++++ drivers/net/ethernet/rocker/rocker.h | 465 +++++ 7 files changed, 4060 insertions(+) create mode 100644 drivers/net/ethernet/rocker/Kconfig create mode 100644 drivers/net/ethernet/rocker/Makefile create mode 100644 drivers/net/ethernet/rocker/rocker.c create mode 100644 drivers/net/ethernet/rocker/rocker.h diff --git a/MAINTAINERS b/MAINTAINERS index 4baaf44..9797bda 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7638,6 +7638,12 @@ F: drivers/hid/hid-roccat* F: include/linux/hid-roccat* F: Documentation/ABI/*/sysfs-driver-hid-roccat* +ROCKER DRIVER +M: Jiri Pirko <j...@resnulli.us> +L: net...@vger.kernel.org +S: Supported +F: drivers/net/ethernet/rocker/ + ROCKETPORT DRIVER P: Comtrol Corp. W: http://www.comtrol.com diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig index dc7406c..61c9cc4 100644 --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -153,6 +153,7 @@ source "drivers/net/ethernet/qlogic/Kconfig" source "drivers/net/ethernet/realtek/Kconfig" source "drivers/net/ethernet/renesas/Kconfig" source "drivers/net/ethernet/rdc/Kconfig" +source "drivers/net/ethernet/rocker/Kconfig" config S6GMAC tristate "S6105 GMAC ethernet support" diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile index 224a018..51ff723 100644 --- a/drivers/net/ethernet/Makefile +++ b/drivers/net/ethernet/Makefile @@ -63,6 +63,7 @@ obj-$(CONFIG_NET_VENDOR_QLOGIC) += qlogic/ obj-$(CONFIG_NET_VENDOR_REALTEK) += realtek/ obj-$(CONFIG_SH_ETH) += renesas/ obj-$(CONFIG_NET_VENDOR_RDC) += rdc/ +obj-$(CONFIG_NET_VENDOR_ROCKER) += rocker/ obj-$(CONFIG_S6GMAC) += s6gmac.o obj-$(CONFIG_NET_VENDOR_SAMSUNG) += samsung/ obj-$(CONFIG_NET_VENDOR_SEEQ) += seeq/ diff --git a/drivers/net/ethernet/rocker/Kconfig b/drivers/net/ethernet/rocker/Kconfig new file mode 100644 index 0000000..0441932 --- /dev/null +++ b/drivers/net/ethernet/rocker/Kconfig @@ -0,0 +1,29 @@ +# +# Rocker device configuration +# + +config NET_VENDOR_ROCKER + bool "Rocker devices" + default y + ---help--- + If you have a network (Ethernet) card belonging to this class, say Y + and read the Ethernet-HOWTO, available from + <http://www.tldp.org/docs.html#howto>. + + Note that the answer to this question doesn't directly affect the + kernel: saying N will just cause the configurator to skip all + the questions about Rocker devices. If you say Y, you will be asked for + your specific card in the following questions. + +if NET_VENDOR_ROCKER + +config ROCKER + tristate "Rocker switch driver (EXPERIMENTAL)" + depends on PCI && NET_SWITCHDEV + ---help--- + This driver supports Rocker switch device. + + To compile this driver as a module, choose M here: the + module will be called rocker. + +endif # NET_VENDOR_ROCKER diff --git a/drivers/net/ethernet/rocker/Makefile b/drivers/net/ethernet/rocker/Makefile new file mode 100644 index 0000000..f85fb12 --- /dev/null +++ b/drivers/net/ethernet/rocker/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the Rocker network device drivers. +# + +obj-$(CONFIG_ROCKER) += rocker.o diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c new file mode 100644 index 0000000..0e8b1ef --- /dev/null +++ b/drivers/net/ethernet/rocker/rocker.c @@ -0,0 +1,3553 @@ +/* + * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver + * Copyright (c) 2014 Jiri Pirko <j...@resnulli.us> + * Copyright (c) 2014 Scott Feldman <sfel...@cumulusnetworks.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <linux/sched.h> +#include <linux/wait.h> +#include <linux/spinlock.h> +#include <linux/hashtable.h> +#include <linux/crc32.h> +#include <linux/sort.h> +#include <linux/random.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <linux/socket.h> +#include <linux/etherdevice.h> +#include <linux/ethtool.h> +#include <linux/if_ether.h> +#include <linux/if_vlan.h> +#include <net/sw_flow.h> +#include <net/rtnetlink.h> +#include <asm-generic/io-64-nonatomic-lo-hi.h> +#include <generated/utsrelease.h> + +#include "rocker.h" + +static const char rocker_driver_name[] = "rocker"; + +static const struct pci_device_id rocker_pci_id_table[] = { + {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0}, + {0, } +}; + +struct rocker_flow_tbl_key { + u32 priority; + enum rocker_of_dpa_table_id tbl_id; + union { + struct { + u32 in_lport; + u32 in_lport_mask; + enum rocker_of_dpa_table_id goto_tbl; + } ig_port; + struct { + u32 in_lport; + __be16 vlan_id; + __be16 vlan_id_mask; + enum rocker_of_dpa_table_id goto_tbl; + bool untagged; + __be16 new_vlan_id; + } vlan; + struct { + /* TODO */ + } term_mac; + 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; + } bridge; + struct { + u32 in_lport; + u32 in_lport_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 ref_count; + u64 cookie; + struct rocker_flow_tbl_key key; + u32 key_crc32; +}; + +struct rocker_group_tbl_entry { + struct hlist_node entry; + u32 ref_count; + u32 group_id; + u16 group_count; + u32 *group_ids; + union { + struct { + u8 pop_vlan; + } l2_interface; + }; +}; + +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; + +struct rocker_port { + struct net_device *dev; + unsigned int prev_flags; + struct rocker *rocker; + unsigned port_number; + 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 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; + u16 group_index_next; +}; + +struct rocker_wait { + wait_queue_head_t wait; + bool done; + bool nowait; +}; + +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 lldp_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e }; + +/* 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_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_PORT_PROMISC = 1, + ROCKER_PRIORITY_ACL = 2, +}; + +static u32 rocker_port_to_lport(struct rocker_port *rocker_port) +{ + return rocker_port->port_number + 1; +} + +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 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 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_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_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) +{ + return -(desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN); +} + +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 *) desc_info->desc->cookie; +} + +static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info, + void *ptr) +{ + desc_info->desc->cookie = (long) 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; /* no thing 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 |= 1 << rocker_port_to_lport(rocker_port); + else + val &= ~(1 << rocker_port_to_lport(rocker_port)); + 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_process(struct rocker *rocker, + struct rocker_desc_info *desc_info) +{ + struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1]; + struct rocker_tlv *info_attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1]; + u16 type; + unsigned port_number; + bool link_up; + struct rocker_port *rocker_port; + + 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]); + if (!type) + return -EOPNOTSUPP; + + rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, + attrs[ROCKER_TLV_EVENT_INFO]); + if (!info_attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LPORT] || + !info_attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]) + return -EIO; + port_number = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LPORT]) - 1; + link_up = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]); + + if (port_number >= rocker->port_count) + return -EINVAL; + + rocker_port = rocker->ports[port_number]; + if (netif_carrier_ok(rocker_port->dev) != link_up) { + if (link_up) + rocker_port_link_up(rocker_port); + else + rocker_port_link_down(rocker_port); + } + return 0; +} + +static 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_LPORT, + rocker_port_to_lport(rocker_port))) + 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_get_port_settings_mode_proc(struct rocker *rocker, + struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + enum rocker_port_mode *mode = priv; + struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; + struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; + + 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_MODE]) + return -EIO; + + *mode = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]); + + 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_LPORT, + rocker_port_to_lport(rocker_port))) + 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_LPORT, + rocker_port_to_lport(rocker_port))) + return -EMSGSIZE; + if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, + ETH_ALEN, macaddr)) + return -EMSGSIZE; + rocker_tlv_nest_end(desc_info, cmd_info); + return 0; +} + +static int +rocker_cmd_set_port_settings_mode_prep(struct rocker *rocker, + struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + enum rocker_port_mode *mode = 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_LPORT, + rocker_port_to_lport(rocker_port))) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MODE, + *mode)) + 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_get_port_settings_mode(struct rocker_port *rocker_port, + enum rocker_port_mode *mode) +{ + return rocker_cmd_exec(rocker_port->rocker, rocker_port, + rocker_cmd_get_port_settings_prep, NULL, + rocker_cmd_get_port_settings_mode_proc, + mode, 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_cmd_set_port_settings_mode(struct rocker_port *rocker_port, + enum rocker_port_mode mode) +{ + return rocker_cmd_exec(rocker_port->rocker, rocker_port, + rocker_cmd_set_port_settings_mode_prep, + &mode, 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_LPORT, + entry->key.ig_port.in_lport)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK, + entry->key.ig_port.in_lport_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_LPORT, + entry->key.vlan.in_lport)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, + entry->key.vlan.vlan_id)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(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_u16(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_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_u16(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; + + 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_LPORT, + entry->key.acl.in_lport)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK, + entry->key.acl.in_lport_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_u16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE, + entry->key.acl.eth_type)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, + entry->key.acl.vlan_id)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(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, + ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD)) + 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_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, + ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL)) + 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_LPORT, + 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_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(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, + ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD)) + 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_MCAST: + err = rocker_cmd_group_tbl_add_group_ids(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, + ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL)) + 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 and group tables + ************************/ + +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; + + hash_for_each_possible(rocker->flow_tbl, found, entry, match->key_crc32) + if (memcmp(&found->key, &match->key, sizeof(found->key)) == 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; + unsigned long flags; + bool add_to_hw = false; + int err = 0; + + match->key_crc32 = crc32(~0, &match->key, sizeof(match->key)); + + spin_lock_irqsave(&rocker->flow_tbl_lock, flags); + + found = rocker_flow_tbl_find(rocker, match); + + if (found) { + kfree(match); + } else { + found = match; + found->cookie = rocker->flow_tbl_next_cookie++; + hash_add(rocker->flow_tbl, &found->entry, found->key_crc32); + add_to_hw = true; + } + + found->ref_count++; + + spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags); + + if (add_to_hw) { + err = rocker_cmd_exec(rocker, rocker_port, + rocker_cmd_flow_tbl_add, + found, NULL, NULL, nowait); + if (err) { + spin_lock_irqsave(&rocker->flow_tbl_lock, flags); + hash_del(&found->entry); + spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags); + kfree(found); + } + } + + return err; +} + +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; + unsigned long flags; + int del_from_hw = 0; + int err = 0; + + match->key_crc32 = crc32(~0, &match->key, sizeof(match->key)); + + spin_lock_irqsave(&rocker->flow_tbl_lock, flags); + + found = rocker_flow_tbl_find(rocker, match); + + if (found) { + found->ref_count--; + if (found->ref_count == 0) { + hash_del(&found->entry); + del_from_hw = 1; + } + } + + spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags); + + kfree(match); + + if (del_from_hw) { + err = rocker_cmd_exec(rocker, rocker_port, + rocker_cmd_flow_tbl_del, + found, NULL, NULL, nowait); + kfree(found); + } + + return err; +} + +#define ROCKER_OP_FLAG_REMOVE (1 << 0) +#define ROCKER_OP_FLAG_NOWAIT (1 << 1) + +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_lport, u32 in_lport_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_lport = in_lport; + entry->key.ig_port.in_lport_mask = in_lport_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_lport, + __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_lport = in_lport; + 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_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) +{ + 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, zero_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; + + return rocker_flow_tbl_do(rocker_port, flags, entry); +} + +static int rocker_flow_tbl_acl(struct rocker_port *rocker_port, + int flags, u32 priority, u32 in_lport, + u32 in_lport_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) +{ + struct rocker_flow_tbl_entry *entry; + + entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); + if (!entry) + return -ENOMEM; + + entry->key.priority = priority; + entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; + entry->key.acl.in_lport = in_lport; + entry->key.acl.in_lport_mask = in_lport_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; + u8 type = ROCKER_GROUP_TYPE_GET(match->group_id); + u16 index; + int bkt; + + switch (type) { + case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE: + /* search for match by group_id */ + hash_for_each_possible(rocker->group_tbl, found, + entry, match->group_id) + if (found->group_id == match->group_id) + return found; + break; + case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST: + /* search for match by group_ids */ + hash_for_each(rocker->group_tbl, bkt, found, entry) { + if (type != ROCKER_GROUP_TYPE_GET(found->group_id)) + continue; + if (found->group_count != match->group_count) + continue; + if (memcmp(found->group_ids, match->group_ids, + found->group_count * sizeof(u32)) == 0) + return found; + } + /* no match: create new unique group_id */ + index = rocker->group_index_next++; + match->group_id &= ~ROCKER_GROUP_INDEX_MASK; + match->group_id |= ROCKER_GROUP_INDEX_SET(index); + break; + default: + break; + } + + 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_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, + u32 *group_id, bool nowait) +{ + struct rocker *rocker = rocker_port->rocker; + struct rocker_group_tbl_entry *found; + unsigned long flags; + bool add_to_hw = false; + int err = 0; + + spin_lock_irqsave(&rocker->group_tbl_lock, flags); + + found = rocker_group_tbl_find(rocker, match); + + if (found) { + rocker_group_tbl_entry_free(match); + } else { + found = match; + hash_add(rocker->group_tbl, &found->entry, found->group_id); + add_to_hw = true; + } + + found->ref_count++; + + spin_unlock_irqrestore(&rocker->group_tbl_lock, flags); + + *group_id = found->group_id; + + if (add_to_hw) { + err = rocker_cmd_exec(rocker, rocker_port, + rocker_cmd_group_tbl_add, + found, NULL, NULL, nowait); + if (err) { + spin_lock_irqsave(&rocker->group_tbl_lock, flags); + hash_del(&found->entry); + spin_unlock_irqrestore(&rocker->group_tbl_lock, flags); + rocker_group_tbl_entry_free(found); + } + } + + return err; +} + +static int rocker_group_tbl_del(struct rocker_port *rocker_port, + struct rocker_group_tbl_entry *match, + u32 *group_id, bool nowait) +{ + struct rocker *rocker = rocker_port->rocker; + struct rocker_group_tbl_entry *found; + unsigned long flags; + bool del_from_hw = false; + int err = 0; + + spin_lock_irqsave(&rocker->group_tbl_lock, flags); + + found = rocker_group_tbl_find(rocker, match); + + if (found) { + *group_id = found->group_id; + found->ref_count--; + if (found->ref_count == 0) { + hash_del(&found->entry); + del_from_hw = true; + } + } + + spin_unlock_irqrestore(&rocker->group_tbl_lock, flags); + + rocker_group_tbl_entry_free(match); + + if (del_from_hw) { + 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, + u32 *group_id) +{ + bool nowait = flags & ROCKER_OP_FLAG_NOWAIT; + + if (flags & ROCKER_OP_FLAG_REMOVE) + return rocker_group_tbl_del(rocker_port, entry, + group_id, nowait); + else + return rocker_group_tbl_add(rocker_port, entry, + group_id, nowait); +} + +static int rocker_group_l2_interface(struct rocker_port *rocker_port, + int flags, u32 group_id, + 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 = group_id; + entry->l2_interface.pop_vlan = pop_vlan; + + return rocker_group_tbl_do(rocker_port, flags, entry, &group_id); +} + +static int rocker_group_l2_mcast(struct rocker_port *rocker_port, + int flags, __be16 vlan_id, + u16 group_count, u32 *group_ids, + u32 *group_id) +{ + struct rocker_group_tbl_entry *entry; + + *group_id = 0; + + entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags)); + if (!entry) + return -ENOMEM; + + entry->group_id = ROCKER_GROUP_L2_MCAST(vlan_id, 0); + entry->group_count = group_count; + entry->group_ids = group_ids; + + return rocker_group_tbl_do(rocker_port, flags, entry, group_id); +} + +static int rocker_group_id_compare(const void *a, const void *b) +{ + return memcmp(a, b, sizeof(u32)); +} + +static struct rocker_port *rocker_port_get_by_ifindex(struct rocker *rocker, + int ifindex) +{ + int i; + + for (i = 0; i < rocker->port_count; i++) + if (rocker->ports[i]->dev->ifindex == ifindex) + return rocker->ports[i]; + return NULL; +} + +static u32 *rocker_flow_get_group_ids(struct rocker_port *rocker_port, + const struct sw_flow *flow, int flags, + __be16 vlan_id, u16 *count) +{ + struct rocker_port *out_port; + u32 *group_ids = NULL; + u32 out_lport; + bool send_up = false; + int i; + + *count = 0; + + for (i = 0; i < flow->actions->count; i++) { + int ifindex = flow->actions->actions[i].out_port_ifindex; + + out_port = rocker_port_get_by_ifindex(rocker_port->rocker, + ifindex); + if (out_port) { + group_ids = krealloc(group_ids, + ++(*count) * sizeof(u32), + rocker_op_flags_gfp(flags)); + if (!group_ids) + goto err_out; + out_lport = + rocker_port_to_lport(out_port); + group_ids[i] = ROCKER_GROUP_L2_INTERFACE(vlan_id, + out_lport); + } else if (!send_up) { + send_up = true; + group_ids = krealloc(group_ids, + ++(*count) * sizeof(u32), + rocker_op_flags_gfp(flags)); + if (!group_ids) + goto err_out; + out_lport = 0; + group_ids[i] = ROCKER_GROUP_L2_INTERFACE(vlan_id, + out_lport); + } + } + + sort(group_ids, *count, sizeof(u32), rocker_group_id_compare, NULL); + + return group_ids; + +err_out: + *count = 0; + return NULL; +} + +static int rocker_bridging_vlan_ucast(struct rocker_port *rocker_port, + const struct sw_flow *flow, + int flags, __be16 vlan_id, bool pop_vlan) +{ + struct rocker_port *out_port; + u32 out_lport; + u32 tunnel_id = 0; + u32 group_l2_interface; + int err; + + /* L2 interface group for output */ + + if (flow->actions->count == 0) { + out_lport = 0; /* send it up */ + } else if (flow->actions->count == 1) { + int ifindex = flow->actions->actions[0].out_port_ifindex; + + out_port = rocker_port_get_by_ifindex(rocker_port->rocker, + ifindex); + if (out_port) + out_lport = rocker_port_to_lport(out_port); + else + out_lport = 0; /* send it up */ + } else { + netdev_err(rocker_port->dev, "Trying to install unicast bridge vlan flow with more than one output device\n"); + return -EINVAL; + } + + group_l2_interface = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport); + err = rocker_group_l2_interface(rocker_port, flags, + group_l2_interface, pop_vlan); + if (err) { + netdev_err(rocker_port->dev, "Error (%d) L2 interface group\n", + err); + return err; + } + + /* VLAN unicast bridge table entry */ + + err = rocker_flow_tbl_bridge(rocker_port, flags, + flow->key.eth.dst, NULL, + vlan_id, tunnel_id, + ROCKER_OF_DPA_TABLE_ID_ACL_POLICY, + group_l2_interface); + + if (err) + netdev_err(rocker_port->dev, "Error (%d) VLAN unicast bridging table entry\n", + err); + + return err; +} + +static int rocker_bridging_vlan_mcast(struct rocker_port *rocker_port, + const struct sw_flow *flow, + int flags, __be16 vlan_id, bool pop_vlan) +{ + u32 tunnel_id = 0; + u32 group_l2_mcast; + u16 group_count; + u32 *group_ids; + int err; + int i; + + /* Get sorted list of output L2 interface group ids; + * if there are none, there is nothing to forward in HW, + * so we're done. + */ + + group_ids = rocker_flow_get_group_ids(rocker_port, flow, flags, vlan_id, + &group_count); + if (group_ids == 0) + return 0; + + /* L2 interface groups for each out_lport */ + + for (i = 0; i < group_count; i++) { + err = rocker_group_l2_interface(rocker_port, flags, + group_ids[i], pop_vlan); + if (err) { + netdev_err(rocker_port->dev, "Error (%d) L2 interface group\n", + err); + goto err_free_group_ids; + } + } + + /* L2 multicast group entry */ + + err = rocker_group_l2_mcast(rocker_port, flags, + vlan_id, group_count, + group_ids, &group_l2_mcast); + if (err) { + netdev_err(rocker_port->dev, "Error (%d) L2 mcast group\n", + err); + goto err_free_group_ids; + } + + /* VLAN multicast bridge table entry */ + + err = rocker_flow_tbl_bridge(rocker_port, flags, + flow->key.eth.dst, NULL, + vlan_id, tunnel_id, + ROCKER_OF_DPA_TABLE_ID_ACL_POLICY, + group_l2_mcast); + + if (err) + netdev_err(rocker_port->dev, "Error (%d) VLAN mcast bridging\n", + err); + + return err; + +err_free_group_ids: + kfree(group_ids); + return err; +} + +static int rocker_flow_parse(struct rocker_port *rocker_port, + const struct sw_flow *flow, + int flags) +{ + struct rocker_port *in_port; + u32 in_lport; + u32 in_lport_mask; + __be16 vlan_id; + __be16 vlan_id_mask; + __be16 new_vlan_id; + __be16 outer_vlan_id; + u16 bridge_id; + u32 tunnel_id; + bool untagged; + bool unicast; + bool eth_dst_exact; + int err; + + enum { + BRIDGING_MODE_UNKNOWN, + BRIDGING_MODE_VLAN_UCAST, + BRIDGING_MODE_VLAN_MCAST, + BRIDGING_MODE_VLAN_DFLT, + BRIDGING_MODE_TUNNEL_UCAST, + BRIDGING_MODE_TUNNEL_MCAST, + BRIDGING_MODE_TUNNEL_DFLT, + } bridging_mode = BRIDGING_MODE_UNKNOWN; + + tunnel_id = 0; /* XXX for now */ + + /* A note about value masks: sw_flow uses mask bit value of + * 0 for "don't care", whereas OF-DPA HW uses mask bit value + * of 1 for "don't care", so sw_flow mask value must be + * inverted beforing passing to OF-DPA HW. To summarize: + * + * mask bit sw_flow OF-DPA + * ------------------------------------- + * 0 don't care care + * 1 care don't care + */ + + /* Get lport for in_port. Skip sw_flows if in_port is not a + * rocker port in our network namespace. + */ + + in_port = rocker_port_get_by_ifindex(rocker_port->rocker, + flow->key.misc.in_port_ifindex); + if (!in_port) + return 0; + + in_lport = rocker_port_to_lport(in_port); + in_lport_mask = 0; + + /* Determine outer VLAN ID. If untagged, use bridge VLAN ID, + * otherwise use tagged VLAN ID for outer VLAN ID. + */ + + if (flow->key.eth.tci == htons(0) && + flow->mask->key.eth.tci == htons(0xffff)) { + vlan_id = flow->key.eth.tci; + vlan_id_mask = htons(0x0fff); + untagged = true; + } else { + /* XXX For now, fail any vlan except untagged vlan 0 */ + netdev_warn(rocker_port->dev, + "Can't parse vlan info, vlan 0x%04x mask 0x%04x\n", + ntohs(flow->key.eth.tci), + ntohs(flow->mask->key.eth.tci)); + return 0; + } + + bridge_id = 0; /* XXX for now, need unique ID for each bridge */ + new_vlan_id = htons(bridge_id << 8 | in_lport); + outer_vlan_id = untagged ? new_vlan_id : vlan_id; + + /* Ingress port table entry */ + + err = rocker_flow_tbl_ig_port(rocker_port, flags, + in_lport, in_lport_mask, + ROCKER_OF_DPA_TABLE_ID_VLAN); + if (err) { + netdev_err(rocker_port->dev, "Error (%d) ingress port table entry\n", + err); + return err; + } + + /* VLAN table entry */ + + err = rocker_flow_tbl_vlan(rocker_port, flags, + in_lport, vlan_id, vlan_id_mask, + ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC, + untagged, new_vlan_id); + if (err) { + netdev_err(rocker_port->dev, "Error (%d) VLAN table entry\n", + err); + return err; + } + + /* XXX Determine if sw_flow wants L2 bridging or L3 routing. + * XXX If wanting L3 routing, need to add termination mac + * XXX table entry to catch L3 routing prefixes. + * XXX For now, just doing L2 bridging, so skip term mac tbl + * XXX (miss on term mac tbl goes to bridge tbl). + */ + + unicast = (flow->key.eth.dst[0] & 0x01) == 0x00; + eth_dst_exact = memcmp(flow->mask->key.eth.dst, ff_mac, ETH_ALEN) == 0; + + if (outer_vlan_id && unicast && eth_dst_exact) + bridging_mode = BRIDGING_MODE_VLAN_UCAST; + else if (outer_vlan_id && !unicast && eth_dst_exact) + bridging_mode = BRIDGING_MODE_VLAN_MCAST; + + switch (bridging_mode) { + case BRIDGING_MODE_VLAN_UCAST: + err = rocker_bridging_vlan_ucast(rocker_port, flow, flags, + outer_vlan_id, untagged); + break; + case BRIDGING_MODE_VLAN_MCAST: + err = rocker_bridging_vlan_mcast(rocker_port, flow, flags, + outer_vlan_id, untagged); + break; + default: + netdev_err(rocker_port->dev, "Unknown bridging mode\n"); + err = -ENOTSUPP; + break; + } + + if (err) { + netdev_err(rocker_port->dev, "Error (%d) bridging table entry\n", + err); + return err; + } + + /* ACL table entry */ + + err = rocker_flow_tbl_acl(rocker_port, flags, + ROCKER_PRIORITY_ACL, + in_lport, in_lport_mask, + flow->key.eth.src, zero_mac, + flow->key.eth.dst, zero_mac, + flow->key.eth.type, + outer_vlan_id, vlan_id_mask, + flow->key.ip.proto, ~flow->mask->key.ip.proto, + flow->key.ip.tos, ~flow->mask->key.ip.tos, + ROCKER_GROUP_NONE); + + if (err) + netdev_err(rocker_port->dev, "Error (%d) ACL table entry\n", + err); + + return err; +} + +static int rocker_flow_add(struct rocker_port *rocker_port, + const struct sw_flow *flow) +{ + return rocker_flow_parse(rocker_port, flow, 0); +} + +static int rocker_flow_del(struct rocker_port *rocker_port, + const struct sw_flow *flow) +{ + return rocker_flow_parse(rocker_port, flow, ROCKER_OP_FLAG_REMOVE); +} + +/***************** + * 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; + } + + 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_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); + 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); + return NETDEV_TX_OK; +} + +static struct rocker_promisc_acl { + u16 eth_type; + const u8 *eth_src; + const u8 *eth_src_mask; + const u8 *eth_dst; + const u8 *eth_dst_mask; + u8 ip_proto; + u8 ip_proto_mask; + u8 ip_tos; + u8 ip_tos_mask; +} rocker_promisc_acls[] = { + { + /* allow any ARP pkts */ + .eth_type = htons(ETH_P_ARP), + .eth_src = zero_mac, + .eth_src_mask = ff_mac, + .eth_dst = zero_mac, + .eth_dst_mask = ff_mac, + }, + { + /* allow any IP pkts */ + .eth_type = htons(ETH_P_IP), + .eth_src = zero_mac, + .eth_src_mask = ff_mac, + .eth_dst = zero_mac, + .eth_dst_mask = ff_mac, + .ip_proto = 0, + .ip_proto_mask = 0xff, + .ip_tos = 0, + .ip_tos_mask = 0xff, + }, + { + /* allow LLDP pkts */ + .eth_type = htons(0x88cc), + .eth_src = zero_mac, + .eth_src_mask = ff_mac, + .eth_dst = lldp_mac, + .eth_dst_mask = zero_mac, + }, + { + /* allow any IPv6 pkts */ + .eth_type = htons(ETH_P_IPV6), + .eth_src = zero_mac, + .eth_src_mask = ff_mac, + .eth_dst = zero_mac, + .eth_dst_mask = ff_mac, + .ip_proto = 0, + .ip_proto_mask = 0xff, + .ip_tos = 0, + .ip_tos_mask = 0xff, + }, + { + /* mark end of list */ + .eth_type = 0, + }, +}; + +static int rocker_port_set_promisc(struct rocker_port *rocker_port, + int flags) +{ + u32 in_lport = rocker_port_to_lport(rocker_port); + u32 in_lport_mask = 0; + u32 out_lport; + u16 bridge_id; + __be16 vlan_id; + __be16 vlan_id_mask; + __be16 new_vlan_id; + struct rocker_promisc_acl *acl; + u32 group_l2_interface; + bool untagged; + bool pop_vlan; + int err; + + /* ingress port table entry */ + + err = rocker_flow_tbl_ig_port(rocker_port, flags, + in_lport, in_lport_mask, + ROCKER_OF_DPA_TABLE_ID_VLAN); + if (err) { + netdev_err(rocker_port->dev, "Error (%d) ingress port table entry\n", + err); + return err; + } + + /* VLAN table entry for untagged traffic */ + + vlan_id = 0; + vlan_id_mask = htons(0x0fff); + untagged = true; + bridge_id = 0; /* XXX for now, need a unique ID for each bridge */ + new_vlan_id = htons(bridge_id << 8 | in_lport); + + err = rocker_flow_tbl_vlan(rocker_port, flags, + in_lport, vlan_id, vlan_id_mask, + ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC, + untagged, new_vlan_id); + if (err) { + netdev_err(rocker_port->dev, "Error (%d) VLAN table entry\n", + err); + return err; + } + + /* L2 interface group entry for bridge (port 0) */ + + out_lport = 0; + pop_vlan = untagged; + + group_l2_interface = ROCKER_GROUP_L2_INTERFACE(new_vlan_id, out_lport); + err = rocker_group_l2_interface(rocker_port, flags, group_l2_interface, + pop_vlan); + if (err) { + netdev_err(rocker_port->dev, "Error (%d) L2 interface group\n", + err); + return err; + } + + /* ACL table entries for acceptable pkts */ + + for (acl = rocker_promisc_acls; acl->eth_type; acl++) { + err = rocker_flow_tbl_acl(rocker_port, flags, + ROCKER_PRIORITY_ACL_PORT_PROMISC, + in_lport, in_lport_mask, + acl->eth_src, acl->eth_src_mask, + acl->eth_dst, acl->eth_dst_mask, + acl->eth_type, + new_vlan_id, vlan_id_mask, + acl->ip_proto, acl->ip_proto_mask, + acl->ip_tos, acl->ip_tos_mask, + group_l2_interface); + if (err) { + netdev_err(rocker_port->dev, "Error (%d) ACL table entry\n", + err); + return err; + } + } + + return 0; +} + +static void rocker_port_set_rx_mode(struct net_device *dev) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + int prev_promisc = (rocker_port->prev_flags & IFF_PROMISC) ? 1 : 0; + int promisc = (dev->flags & IFF_PROMISC) ? 1 : 0; + int op_flags = ROCKER_OP_FLAG_NOWAIT; + + if (!promisc) + op_flags |= ROCKER_OP_FLAG_REMOVE; + + if (promisc != prev_promisc) + rocker_port_set_promisc(rocker_port, op_flags); + + rocker_port->prev_flags = dev->flags; +} + +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_swdev_get_id(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_flow_insert(struct net_device *dev, + const struct sw_flow *flow) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + + return rocker_flow_add(rocker_port, flow); +} + +static int rocker_port_swdev_flow_remove(struct net_device *dev, + const struct sw_flow *flow) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + + return rocker_flow_del(rocker_port, flow); +} + +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_rx_mode = rocker_port_set_rx_mode, + .ndo_set_mac_address = rocker_port_set_mac_address, + .ndo_swdev_get_id = rocker_port_swdev_get_id, + .ndo_swdev_flow_insert = rocker_port_swdev_flow_insert, + .ndo_swdev_flow_remove = rocker_port_swdev_flow_remove, +}; + +static bool rocker_port_dev_check(struct net_device *dev) +{ + return dev->netdev_ops == &rocker_port_netdev_ops; +} + +/******************** + * 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 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, +}; + +/***************** + * 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))) { + 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); + dev_kfree_skb_any(rocker_desc_cookie_ptr_get(desc_info)); + 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); + 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); + } + 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_to_lport(rocker_port)); + if (link_up) + netif_carrier_on(rocker_port->dev); + else + netif_carrier_off(rocker_port->dev); +} + +static void rocker_remove_ports(struct rocker *rocker) +{ + int i; + + for (i = 0; i < rocker->port_count; i++) + unregister_netdev(rocker->ports[i]->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 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_dev_addr_init(rocker, rocker_port); + dev->netdev_ops = &rocker_port_netdev_ops; + dev->ethtool_ops = &rocker_port_ethtool_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); + + err = register_netdev(dev); + if (err) { + dev_err(&pdev->dev, "register_netdev failed\n"); + goto free_netdev; + } + rocker->ports[port_number] = rocker_port; + return 0; + +free_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); + 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_probe_ports(rocker); + if (err) { + dev_err(&pdev->dev, "failed to probe ports\n"); + goto err_probe_ports; + } + + hash_init(rocker->flow_tbl); + spin_lock_init(&rocker->flow_tbl_lock); + + hash_init(rocker->group_tbl); + spin_lock_init(&rocker->group_tbl_lock); + + dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id); + + return 0; + +err_probe_ports: + free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); +err_request_event_irq: + free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); +err_request_cmd_irq: + rocker_dma_rings_fini(rocker); +err_dma_rings_init: +err_basic_hw_test: + rocker_msix_fini(rocker); +err_msix_init: + iounmap(rocker->hw_addr); +err_ioremap: +err_pci_resource_len_check: +err_pci_set_dma_mask: + pci_release_regions(pdev); +err_pci_request_regions: + pci_disable_device(pdev); +err_pci_enable_device: + kfree(rocker); + return err; +} + +static void rocker_remove(struct pci_dev *pdev) +{ + struct rocker *rocker = pci_get_drvdata(pdev); + + rocker_remove_ports(rocker); + 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 int rocker_port_master_changed(struct net_device *dev) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + enum rocker_port_mode newmode = ROCKER_PORT_MODE_L2L3; + enum rocker_port_mode oldmode; + struct net_device *master = netdev_master_upper_dev_get(dev); + int err; + + if (master && master->rtnl_link_ops && + !strcmp(master->rtnl_link_ops->kind, "openvswitch")) + newmode = ROCKER_PORT_MODE_OF_DPA; + err = rocker_cmd_get_port_settings_mode(rocker_port, &oldmode); + if (err) + return err; + if (newmode == oldmode) + return 0; + err = rocker_cmd_set_port_settings_mode(rocker_port, newmode); + if (err) + return err; + netdev_info(dev, "port mode changed from %d to %d\n", oldmode, newmode); + return err; +} + +static int rocker_device_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *dev = netdev_notifier_info_to_dev(ptr); + int err; + + if (!rocker_port_dev_check(dev)) + return NOTIFY_DONE; + + switch (event) { + case NETDEV_CHANGEUPPER: + 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_notifier_block __read_mostly = { + .notifier_call = rocker_device_event, +}; + +/*********************** + * Module init and exit + ***********************/ + +static int __init rocker_module_init(void) +{ + int err; + + register_netdevice_notifier(&rocker_notifier_block); + err = pci_register_driver(&rocker_pci_driver); + if (err) + goto err_pci_register_driver; + return 0; + +err_pci_register_driver: + unregister_netdevice_notifier(&rocker_notifier_block); + return err; +} + +static void __exit rocker_module_exit(void) +{ + unregister_netdevice_notifier(&rocker_notifier_block); + pci_unregister_driver(&rocker_pci_driver); +} + +module_init(rocker_module_init); +module_exit(rocker_module_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Jiri Pirko <j...@resnulli.us>"); +MODULE_AUTHOR("Scott Feldman <sfel...@cumulusnetworks.com>"); +MODULE_DESCRIPTION("Rocker switch device driver"); +MODULE_DEVICE_TABLE(pci, rocker_pci_id_table); diff --git a/drivers/net/ethernet/rocker/rocker.h b/drivers/net/ethernet/rocker/rocker.h new file mode 100644 index 0000000..fc08592 --- /dev/null +++ b/drivers/net/ethernet/rocker/rocker.h @@ -0,0 +1,465 @@ +/* + * drivers/net/ethernet/rocker/rocker.h - Rocker switch device driver + * Copyright (c) 2014 Jiri Pirko <j...@resnulli.us> + * Copyright (c) 2014 Scott Feldman <sfel...@cumulusnetworks.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef _ROCKER_H +#define _ROCKER_H + +#include <linux/types.h> + +#define PCI_VENDOR_ID_REDHAT 0x1b36 +#define PCI_DEVICE_ID_REDHAT_ROCKER 0x0006 + +#define ROCKER_PCI_BAR0_SIZE 0x2000 + +/* MSI-X vectors */ +enum { + ROCKER_MSIX_VEC_CMD, + ROCKER_MSIX_VEC_EVENT, + ROCKER_MSIX_VEC_TEST, + ROCKER_MSIX_VEC_RESERVED0, + __ROCKER_MSIX_VEC_TX, + __ROCKER_MSIX_VEC_RX, +#define ROCKER_MSIX_VEC_TX(port) \ + (__ROCKER_MSIX_VEC_TX + ((port) * 2)) +#define ROCKER_MSIX_VEC_RX(port) \ + (__ROCKER_MSIX_VEC_RX + ((port) * 2)) +#define ROCKER_MSIX_VEC_COUNT(portcnt) \ + (ROCKER_MSIX_VEC_RX((portcnt - 1)) + 1) +}; + +/* Rocker bogus registers */ +#define ROCKER_BOGUS_REG0 0x0000 +#define ROCKER_BOGUS_REG1 0x0004 +#define ROCKER_BOGUS_REG2 0x0008 +#define ROCKER_BOGUS_REG3 0x000c + +/* Rocker test registers */ +#define ROCKER_TEST_REG 0x0010 +#define ROCKER_TEST_REG64 0x0018 /* 8-byte */ +#define ROCKER_TEST_IRQ 0x0020 +#define ROCKER_TEST_DMA_ADDR 0x0028 /* 8-byte */ +#define ROCKER_TEST_DMA_SIZE 0x0030 +#define ROCKER_TEST_DMA_CTRL 0x0034 + +/* Rocker test register ctrl */ +#define ROCKER_TEST_DMA_CTRL_CLEAR (1 << 0) +#define ROCKER_TEST_DMA_CTRL_FILL (1 << 1) +#define ROCKER_TEST_DMA_CTRL_INVERT (1 << 2) + +/* Rocker DMA ring register offsets */ +#define ROCKER_DMA_DESC_ADDR(x) (0x1000 + (x) * 32) /* 8-byte */ +#define ROCKER_DMA_DESC_SIZE(x) (0x1008 + (x) * 32) +#define ROCKER_DMA_DESC_HEAD(x) (0x100c + (x) * 32) +#define ROCKER_DMA_DESC_TAIL(x) (0x1010 + (x) * 32) +#define ROCKER_DMA_DESC_CTRL(x) (0x1014 + (x) * 32) +#define ROCKER_DMA_DESC_CREDITS(x) (0x1018 + (x) * 32) +#define ROCKER_DMA_DESC_RES1(x) (0x101c + (x) * 32) + +/* Rocker dma ctrl register bits */ +#define ROCKER_DMA_DESC_CTRL_RESET (1 << 0) + +/* Rocker DMA ring types */ +enum rocker_dma_type { + ROCKER_DMA_CMD, + ROCKER_DMA_EVENT, + __ROCKER_DMA_TX, + __ROCKER_DMA_RX, +#define ROCKER_DMA_TX(port) (__ROCKER_DMA_TX + (port) * 2) +#define ROCKER_DMA_RX(port) (__ROCKER_DMA_RX + (port) * 2) +}; + +/* Rocker DMA ring size limits and default sizes */ +#define ROCKER_DMA_SIZE_MIN 2ul +#define ROCKER_DMA_SIZE_MAX 65536ul +#define ROCKER_DMA_CMD_DEFAULT_SIZE 32ul +#define ROCKER_DMA_EVENT_DEFAULT_SIZE 32ul +#define ROCKER_DMA_TX_DEFAULT_SIZE 64ul +#define ROCKER_DMA_TX_DESC_SIZE 256 +#define ROCKER_DMA_RX_DEFAULT_SIZE 64ul +#define ROCKER_DMA_RX_DESC_SIZE 256 + +/* Rocker DMA descriptor struct */ +struct rocker_desc { + u64 buf_addr; + u64 cookie; + u16 buf_size; + u16 tlv_size; + u16 resv[5]; + u16 comp_err; +} __packed __aligned(8); + +#define ROCKER_DMA_DESC_COMP_ERR_GEN (1 << 15) + +/* Rocker DMA TLV struct */ +struct rocker_tlv { + u32 type; + u16 len; +} __packed __aligned(8); + +/* TLVs */ +enum { + ROCKER_TLV_CMD_UNSPEC, + ROCKER_TLV_CMD_TYPE, /* u16 */ + ROCKER_TLV_CMD_INFO, /* nest */ + + __ROCKER_TLV_CMD_MAX, + ROCKER_TLV_CMD_MAX = __ROCKER_TLV_CMD_MAX - 1, +}; + +enum { + ROCKER_TLV_CMD_TYPE_UNSPEC, + ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS, + ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS, + ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD, + ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD, + ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL, + ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_GET_STATS, + ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD, + ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD, + ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL, + ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_GET_STATS, + ROCKER_TLV_CMD_TYPE_TRUNK, + ROCKER_TLV_CMD_TYPE_BRIDGE, + + __ROCKER_TLV_CMD_TYPE_MAX, + ROCKER_TLV_CMD_TYPE_MAX = __ROCKER_TLV_CMD_TYPE_MAX - 1, +}; + +enum { + ROCKER_TLV_CMD_PORT_SETTINGS_UNSPEC, + ROCKER_TLV_CMD_PORT_SETTINGS_LPORT, /* u32 */ + ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, /* u32 */ + ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, /* u8 */ + ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, /* u8 */ + ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, /* binary */ + ROCKER_TLV_CMD_PORT_SETTINGS_MODE, /* u8 */ + + __ROCKER_TLV_CMD_PORT_SETTINGS_MAX, + ROCKER_TLV_CMD_PORT_SETTINGS_MAX = + __ROCKER_TLV_CMD_PORT_SETTINGS_MAX - 1, +}; + +enum rocker_port_mode { + ROCKER_PORT_MODE_OF_DPA, + ROCKER_PORT_MODE_L2L3, +}; + +enum { + ROCKER_TLV_EVENT_UNSPEC, + ROCKER_TLV_EVENT_TYPE, /* u16 */ + ROCKER_TLV_EVENT_INFO, /* nest */ + + __ROCKER_TLV_EVENT_MAX, + ROCKER_TLV_EVENT_MAX = __ROCKER_TLV_EVENT_MAX - 1, +}; + +enum { + ROCKER_TLV_EVENT_TYPE_UNSPEC, + ROCKER_TLV_EVENT_TYPE_LINK_CHANGED, + + __ROCKER_TLV_EVENT_TYPE_MAX, + ROCKER_TLV_EVENT_TYPE_MAX = __ROCKER_TLV_EVENT_TYPE_MAX - 1, +}; + +enum { + ROCKER_TLV_EVENT_LINK_CHANGED_UNSPEC, + ROCKER_TLV_EVENT_LINK_CHANGED_LPORT, /* u32 */ + ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP, /* u8 */ + + __ROCKER_TLV_EVENT_LINK_CHANGED_MAX, + ROCKER_TLV_EVENT_LINK_CHANGED_MAX = + __ROCKER_TLV_EVENT_LINK_CHANGED_MAX - 1, +}; + +enum { + ROCKER_TLV_RX_UNSPEC, + ROCKER_TLV_RX_FLAGS, /* u16, see ROCKER_RX_FLAGS_ */ + ROCKER_TLV_RX_CSUM, /* u16 */ + ROCKER_TLV_RX_FRAG_ADDR, /* u64 */ + ROCKER_TLV_RX_FRAG_MAX_LEN, /* u16 */ + ROCKER_TLV_RX_FRAG_LEN, /* u16 */ + + __ROCKER_TLV_RX_MAX, + ROCKER_TLV_RX_MAX = __ROCKER_TLV_RX_MAX - 1, +}; + +#define ROCKER_RX_FLAGS_IPV4 (1 << 0) +#define ROCKER_RX_FLAGS_IPV6 (1 << 1) +#define ROCKER_RX_FLAGS_CSUM_CALC (1 << 2) +#define ROCKER_RX_FLAGS_IPV4_CSUM_GOOD (1 << 3) +#define ROCKER_RX_FLAGS_IP_FRAG (1 << 4) +#define ROCKER_RX_FLAGS_TCP (1 << 5) +#define ROCKER_RX_FLAGS_UDP (1 << 6) +#define ROCKER_RX_FLAGS_TCP_UDP_CSUM_GOOD (1 << 7) + +enum { + ROCKER_TLV_TX_UNSPEC, + ROCKER_TLV_TX_OFFLOAD, /* u8, see ROCKER_TX_OFFLOAD_ */ + ROCKER_TLV_TX_L3_CSUM_OFF, /* u16 */ + ROCKER_TLV_TX_TSO_MSS, /* u16 */ + ROCKER_TLV_TX_TSO_HDR_LEN, /* u16 */ + ROCKER_TLV_TX_FRAGS, /* array */ + + __ROCKER_TLV_TX_MAX, + ROCKER_TLV_TX_MAX = __ROCKER_TLV_TX_MAX - 1, +}; + +#define ROCKER_TX_OFFLOAD_NONE 0 +#define ROCKER_TX_OFFLOAD_IP_CSUM 1 +#define ROCKER_TX_OFFLOAD_TCP_UDP_CSUM 2 +#define ROCKER_TX_OFFLOAD_L3_CSUM 3 +#define ROCKER_TX_OFFLOAD_TSO 4 + +#define ROCKER_TX_FRAGS_MAX 16 + +enum { + ROCKER_TLV_TX_FRAG_UNSPEC, + ROCKER_TLV_TX_FRAG, /* nest */ + + __ROCKER_TLV_TX_FRAG_MAX, + ROCKER_TLV_TX_FRAG_MAX = __ROCKER_TLV_TX_FRAG_MAX - 1, +}; + +enum { + ROCKER_TLV_TX_FRAG_ATTR_UNSPEC, + ROCKER_TLV_TX_FRAG_ATTR_ADDR, /* u64 */ + ROCKER_TLV_TX_FRAG_ATTR_LEN, /* u16 */ + + __ROCKER_TLV_TX_FRAG_ATTR_MAX, + ROCKER_TLV_TX_FRAG_ATTR_MAX = __ROCKER_TLV_TX_FRAG_ATTR_MAX - 1, +}; + +/* cmd info nested for OF-DPA msgs */ +enum { + ROCKER_TLV_OF_DPA_UNSPEC, + ROCKER_TLV_OF_DPA_TABLE_ID, /* u16 */ + ROCKER_TLV_OF_DPA_PRIORITY, /* u32 */ + ROCKER_TLV_OF_DPA_HARDTIME, /* u32 */ + ROCKER_TLV_OF_DPA_IDLETIME, /* u32 */ + ROCKER_TLV_OF_DPA_COOKIE, /* u64 */ + ROCKER_TLV_OF_DPA_IN_LPORT, /* u32 */ + ROCKER_TLV_OF_DPA_IN_LPORT_MASK, /* u32 */ + ROCKER_TLV_OF_DPA_OUT_LPORT, /* u32 */ + ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, /* u16 */ + ROCKER_TLV_OF_DPA_GROUP_ID, /* u32 */ + ROCKER_TLV_OF_DPA_GROUP_COUNT, /* u16 */ + ROCKER_TLV_OF_DPA_GROUP_IDS, /* u32 array */ + ROCKER_TLV_OF_DPA_VLAN_ID, /* __be16 */ + ROCKER_TLV_OF_DPA_VLAN_ID_MASK, /* __be16 */ + ROCKER_TLV_OF_DPA_VLAN_PCP, /* __be16 */ + ROCKER_TLV_OF_DPA_VLAN_PCP_MASK, /* __be16 */ + ROCKER_TLV_OF_DPA_VLAN_PCP_ACTION, /* u8 */ + ROCKER_TLV_OF_DPA_NEW_VLAN_ID, /* __be16 */ + ROCKER_TLV_OF_DPA_NEW_VLAN_PCP, /* u8 */ + ROCKER_TLV_OF_DPA_TUNNEL_ID, /* u32 */ + ROCKER_TLV_OF_DPA_TUN_LOG_LPORT, /* u32 */ + ROCKER_TLV_OF_DPA_ETHERTYPE, /* __be16 */ + ROCKER_TLV_OF_DPA_DST_MAC, /* binary */ + ROCKER_TLV_OF_DPA_DST_MAC_MASK, /* binary */ + ROCKER_TLV_OF_DPA_SRC_MAC, /* binary */ + ROCKER_TLV_OF_DPA_SRC_MAC_MASK, /* binary */ + ROCKER_TLV_OF_DPA_IP_PROTO, /* u8 */ + ROCKER_TLV_OF_DPA_IP_PROTO_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_IP_DSCP, /* u8 */ + ROCKER_TLV_OF_DPA_IP_DSCP_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_IP_DSCP_ACTION, /* u8 */ + ROCKER_TLV_OF_DPA_NEW_IP_DSCP, /* u8 */ + ROCKER_TLV_OF_DPA_IP_ECN, /* u8 */ + ROCKER_TLV_OF_DPA_IP_ECN_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_DST_IP, /* __be32 */ + ROCKER_TLV_OF_DPA_DST_IP_MASK, /* __be32 */ + ROCKER_TLV_OF_DPA_SRC_IP, /* __be32 */ + ROCKER_TLV_OF_DPA_SRC_IP_MASK, /* __be32 */ + ROCKER_TLV_OF_DPA_DST_IPV6, /* binary */ + ROCKER_TLV_OF_DPA_DST_IPV6_MASK, /* binary */ + ROCKER_TLV_OF_DPA_SRC_IPV6, /* binary */ + ROCKER_TLV_OF_DPA_SRC_IPV6_MASK, /* binary */ + ROCKER_TLV_OF_DPA_SRC_ARP_IP, /* __be32 */ + ROCKER_TLV_OF_DPA_SRC_ARP_IP_MASK, /* __be32 */ + ROCKER_TLV_OF_DPA_L4_DST_PORT, /* __be16 */ + ROCKER_TLV_OF_DPA_L4_DST_PORT_MASK, /* __be16 */ + ROCKER_TLV_OF_DPA_L4_SRC_PORT, /* __be16 */ + ROCKER_TLV_OF_DPA_L4_SRC_PORT_MASK, /* __be16 */ + ROCKER_TLV_OF_DPA_ICMP_TYPE, /* u8 */ + ROCKER_TLV_OF_DPA_ICMP_TYPE_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_ICMP_CODE, /* u8 */ + ROCKER_TLV_OF_DPA_ICMP_CODE_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_IPV6_LABEL, /* __be32 */ + ROCKER_TLV_OF_DPA_IPV6_LABEL_MASK, /* __be32 */ + ROCKER_TLV_OF_DPA_QUEUE_ID_ACTION, /* u8 */ + ROCKER_TLV_OF_DPA_NEW_QUEUE_ID, /* u8 */ + ROCKER_TLV_OF_DPA_CLEAR_ACTIONS, /* u32 */ + ROCKER_TLV_OF_DPA_POP_VLAN, /* u8 */ + + __ROCKER_TLV_OF_DPA_MAX, + ROCKER_TLV_OF_DPA_MAX = __ROCKER_TLV_OF_DPA_MAX - 1, +}; + +/* OF-DPA table IDs */ + +enum rocker_of_dpa_table_id { + ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT = 0, + ROCKER_OF_DPA_TABLE_ID_VLAN = 10, + ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC = 20, + ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING = 30, + ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING = 40, + ROCKER_OF_DPA_TABLE_ID_BRIDGING = 50, + ROCKER_OF_DPA_TABLE_ID_ACL_POLICY = 60, +}; + +/* OF_DPA_xxx nest */ +enum { + ROCKER_TLV_OF_DPA_INFO_UNSPEC, + ROCKER_TLV_OF_DPA_INFO_IN_LPORT, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_IN_LPORT_MASK, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_OUT_LPORT, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_GOTO_TABLE_ID, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_GROUP_ID, /* u32 */ + ROCKER_TLV_OF_DPA_INFO_VLAN_ID, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_VLAN_ID_MASK, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_VLAN_PCP, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_VLAN_PCP_MASK, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_VLAN_PCP_ACTION, /* u8 */ + ROCKER_TLV_OF_DPA_INFO_NEW_VLAN_ID, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_NEW_VLAN_PCP, /* u8 */ + ROCKER_TLV_OF_DPA_INFO_TUNNEL_ID, /* u32 */ + ROCKER_TLV_OF_DPA_INFO_TUN_LOG_LPORT, /* u32 */ + ROCKER_TLV_OF_DPA_INFO_ETHERTYPE, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_DST_MAC, /* binary */ + ROCKER_TLV_OF_DPA_INFO_DST_MAC_MASK, /* binary */ + ROCKER_TLV_OF_DPA_INFO_SRC_MAC, /* binary */ + ROCKER_TLV_OF_DPA_INFO_SRC_MAC_MASK, /* binary */ + ROCKER_TLV_OF_DPA_INFO_IP_PROTO, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_IP_PROTO_MASK, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_DSCP, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_DSCP_MASK, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_DSCP_ACTION, /* u8 */ + ROCKER_TLV_OF_DPA_INFO_NEW_DSCP, /* u8 */ + ROCKER_TLV_OF_DPA_INFO_ECN, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_ECN_MASK, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_DST_IP, /* binary */ + ROCKER_TLV_OF_DPA_INFO_DST_IP_MASK, /* binary */ + ROCKER_TLV_OF_DPA_INFO_SRC_IP, /* binary */ + ROCKER_TLV_OF_DPA_INFO_SRC_IP_MASK, /* binary */ + ROCKER_TLV_OF_DPA_INFO_DST_IPV6, /* binary */ + ROCKER_TLV_OF_DPA_INFO_DST_IPV6_MASK, /* binary */ + ROCKER_TLV_OF_DPA_INFO_SRC_IPV6, /* binary */ + ROCKER_TLV_OF_DPA_INFO_SRC_IPV6_MASK, /* binary */ + ROCKER_TLV_OF_DPA_INFO_SRC_ARP_IP, /* u32 */ + ROCKER_TLV_OF_DPA_INFO_SRC_ARP_IP_MASK, /* u32 */ + ROCKER_TLV_OF_DPA_INFO_L4_DST_PORT, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_L4_DST_PORT_MASK, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_L4_SRC_PORT, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_L4_SRC_PORT_MASK, /* u16 */ + ROCKER_TLV_OF_DPA_INFO_ICMP_TYPE, /* u8 */ + ROCKER_TLV_OF_DPA_INFO_ICMP_TYPE_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_INFO_ICMP_CODE, /* u8 */ + ROCKER_TLV_OF_DPA_INFO_ICMP_CODE_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_INFO_IPV6_LABEL, /* u32 */ + ROCKER_TLV_OF_DPA_INFO_IPV6_LABEL_MASK, /* u32 */ + ROCKER_TLV_OF_DPA_INFO_QUEUE_ID_ACTION, /* u8 */ + ROCKER_TLV_OF_DPA_INFO_NEW_QUEUE_ID, /* u8 */ + ROCKER_TLV_OF_DPA_INFO_CLEAR_ACTIONS, /* u32 */ + + __ROCKER_TLV_OF_DPA_INFO_MAX, + ROCKER_TLV_OF_DPA_INFO_MAX = __ROCKER_TLV_OF_DPA_INFO_MAX - 1, +}; + +/* OF-DPA flow stats */ +enum { + ROCKER_TLV_OF_DPA_FLOW_STAT_UNSPEC, + ROCKER_TLV_OF_DPA_FLOW_STAT_DURATION, /* u32 */ + ROCKER_TLV_OF_DPA_FLOW_STAT_RX_PKTS, /* u64 */ + ROCKER_TLV_OF_DPA_FLOW_STAT_TX_PKTS, /* u64 */ + + __ROCKER_TLV_OF_DPA_FLOW_STAT_MAX, + ROCKER_TLV_OF_DPA_FLOW_STAT_MAX = __ROCKER_TLV_OF_DPA_FLOW_STAT_MAX - 1, +}; + +/* OF-DPA group types */ +enum rocker_of_dpa_group_type { + ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE = 0, + ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE, + ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST, + ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST, + ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD, + ROCKER_OF_DPA_GROUP_TYPE_L3_INTERFACE, + ROCKER_OF_DPA_GROUP_TYPE_L3_MCAST, + ROCKER_OF_DPA_GROUP_TYPE_L3_ECMP, + ROCKER_OF_DPA_GROUP_TYPE_L2_OVERLAY, +}; + +/* OF-DPA group L2 overlay types */ +enum rocker_of_dpa_overlay_type { + ROCKER_OF_DPA_OVERLAY_TYPE_FLOOD_UCAST = 0, + ROCKER_OF_DPA_OVERLAY_TYPE_FLOOD_MCAST, + ROCKER_OF_DPA_OVERLAY_TYPE_MCAST_UCAST, + ROCKER_OF_DPA_OVERLAY_TYPE_MCAST_MCAST, +}; + +/* OF-DPA group ID encoding */ +#define ROCKER_GROUP_TYPE_SHIFT 28 +#define ROCKER_GROUP_TYPE_MASK 0xf0000000 +#define ROCKER_GROUP_VLAN_SHIFT 16 +#define ROCKER_GROUP_VLAN_MASK 0x0fff0000 +#define ROCKER_GROUP_PORT_SHIFT 0 +#define ROCKER_GROUP_PORT_MASK 0x0000ffff +#define ROCKER_GROUP_TUNNEL_ID_SHIFT 12 +#define ROCKER_GROUP_TUNNEL_ID_MASK 0x0ffff000 +#define ROCKER_GROUP_SUBTYPE_SHIFT 10 +#define ROCKER_GROUP_SUBTYPE_MASK 0x00000c00 +#define ROCKER_GROUP_INDEX_SHIFT 0 +#define ROCKER_GROUP_INDEX_MASK 0x0000ffff +#define ROCKER_GROUP_INDEX_LONG_SHIFT 0 +#define ROCKER_GROUP_INDEX_LONG_MASK 0x0fffffff + +#define ROCKER_GROUP_TYPE_GET(group_id) \ + (((group_id) & ROCKER_GROUP_TYPE_MASK) >> ROCKER_GROUP_TYPE_SHIFT) +#define ROCKER_GROUP_TYPE_SET(type) \ + (((type) << ROCKER_GROUP_TYPE_SHIFT) & ROCKER_GROUP_TYPE_MASK) +#define ROCKER_GROUP_VLAN_GET(group_id) \ + (((group_id) & ROCKER_GROUP_VLAN_ID_MASK) >> ROCKER_GROUP_VLAN_ID_SHIFT) +#define ROCKER_GROUP_VLAN_SET(vlan_id) \ + (((vlan_id) << ROCKER_GROUP_VLAN_SHIFT) & ROCKER_GROUP_VLAN_MASK) +#define ROCKER_GROUP_PORT_GET(group_id) \ + (((group_id) & ROCKER_GROUP_PORT_MASK) >> ROCKER_GROUP_PORT_SHIFT) +#define ROCKER_GROUP_PORT_SET(port) \ + (((port) << ROCKER_GROUP_PORT_SHIFT) & ROCKER_GROUP_PORT_MASK) +#define ROCKER_GROUP_INDEX_GET(group_id) \ + (((group_id) & ROCKER_GROUP_INDEX_MASK) >> ROCKER_GROUP_INDEX_SHIFT) +#define ROCKER_GROUP_INDEX_SET(index) \ + (((index) << ROCKER_GROUP_INDEX_SHIFT) & ROCKER_GROUP_INDEX_MASK) +#define ROCKER_GROUP_INDEX_LONG_GET(group_id) \ + (((group_id) & ROCKER_GROUP_INDEX_LONG_MASK) >> \ + ROCKER_GROUP_INDEX_LONG_SHIFT) +#define ROCKER_GROUP_INDEX_LONG_SET(index) \ + (((index) << ROCKER_GROUP_INDEX_LONG_SHIFT) & \ + ROCKER_GROUP_INDEX_LONG_MASK) + +#define ROCKER_GROUP_NONE 0 +#define ROCKER_GROUP_L2_INTERFACE(vlan_id, port) \ + (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE) |\ + ROCKER_GROUP_VLAN_SET(vlan_id) | ROCKER_GROUP_PORT_SET(port)) +#define ROCKER_GROUP_L2_MCAST(vlan_id, index) \ + (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST) |\ + ROCKER_GROUP_VLAN_SET(vlan_id) | ROCKER_GROUP_INDEX_SET(index)) + +/* Rocker general purpose registers */ +#define ROCKER_CONTROL 0x0300 +#define ROCKER_PORT_PHYS_COUNT 0x0304 +#define ROCKER_PORT_PHYS_LINK_STATUS 0x0310 /* 8-byte */ +#define ROCKER_PORT_PHYS_ENABLE 0x0318 /* 8-byte */ +#define ROCKER_SWITCH_ID 0x0320 /* 8-byte */ + +/* Rocker control bits */ +#define ROCKER_CONTROL_RESET (1 << 0) + +#endif -- 1.9.3 _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
