diff options
Diffstat (limited to 'drivers/net/mlx5/mlx5.c')
| -rw-r--r-- | drivers/net/mlx5/mlx5.c | 1528 |
1 files changed, 1020 insertions, 508 deletions
diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c index 6c0985bd..ec63bc6e 100644 --- a/drivers/net/mlx5/mlx5.c +++ b/drivers/net/mlx5/mlx5.c @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: BSD-3-Clause * Copyright 2015 6WIND S.A. - * Copyright 2015 Mellanox. + * Copyright 2015 Mellanox Technologies, Ltd */ #include <stddef.h> @@ -13,6 +13,8 @@ #include <errno.h> #include <net/if.h> #include <sys/mman.h> +#include <linux/netlink.h> +#include <linux/rtnetlink.h> /* Verbs header. */ /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */ @@ -33,6 +35,9 @@ #include <rte_config.h> #include <rte_eal_memconfig.h> #include <rte_kvargs.h> +#include <rte_rwlock.h> +#include <rte_spinlock.h> +#include <rte_string_fns.h> #include "mlx5.h" #include "mlx5_utils.h" @@ -40,10 +45,23 @@ #include "mlx5_autoconf.h" #include "mlx5_defs.h" #include "mlx5_glue.h" +#include "mlx5_mr.h" /* Device parameter to enable RX completion queue compression. */ #define MLX5_RXQ_CQE_COMP_EN "rxq_cqe_comp_en" +/* Device parameter to enable Multi-Packet Rx queue. */ +#define MLX5_RX_MPRQ_EN "mprq_en" + +/* Device parameter to configure log 2 of the number of strides for MPRQ. */ +#define MLX5_RX_MPRQ_LOG_STRIDE_NUM "mprq_log_stride_num" + +/* Device parameter to limit the size of memcpy'd packet for MPRQ. */ +#define MLX5_RX_MPRQ_MAX_MEMCPY_LEN "mprq_max_memcpy_len" + +/* Device parameter to set the minimum number of Rx queues to enable MPRQ. */ +#define MLX5_RXQS_MIN_MPRQ "rxqs_min_mprq" + /* Device parameter to configure inline send. */ #define MLX5_TXQ_INLINE "txq_inline" @@ -68,6 +86,15 @@ /* Device parameter to enable hardware Rx vector. */ #define MLX5_RX_VEC_EN "rx_vec_en" +/* Allow L3 VXLAN flow creation. */ +#define MLX5_L3_VXLAN_EN "l3_vxlan_en" + +/* Activate Netlink support in VF mode. */ +#define MLX5_VF_NL_EN "vf_nl_en" + +/* Select port representors to instantiate. */ +#define MLX5_REPRESENTOR "representor" + #ifndef HAVE_IBV_MLX5_MOD_MPW #define MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED (1 << 2) #define MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW (1 << 3) @@ -77,6 +104,50 @@ #define MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP (1 << 4) #endif +static const char *MZ_MLX5_PMD_SHARED_DATA = "mlx5_pmd_shared_data"; + +/* Shared memory between primary and secondary processes. */ +struct mlx5_shared_data *mlx5_shared_data; + +/* Spinlock for mlx5_shared_data allocation. */ +static rte_spinlock_t mlx5_shared_data_lock = RTE_SPINLOCK_INITIALIZER; + +/** Driver-specific log messages type. */ +int mlx5_logtype; + +/** + * Prepare shared data between primary and secondary process. + */ +static void +mlx5_prepare_shared_data(void) +{ + const struct rte_memzone *mz; + + rte_spinlock_lock(&mlx5_shared_data_lock); + if (mlx5_shared_data == NULL) { + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { + /* Allocate shared memory. */ + mz = rte_memzone_reserve(MZ_MLX5_PMD_SHARED_DATA, + sizeof(*mlx5_shared_data), + SOCKET_ID_ANY, 0); + } else { + /* Lookup allocated shared memory. */ + mz = rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA); + } + if (mz == NULL) + rte_panic("Cannot allocate mlx5 shared data\n"); + mlx5_shared_data = mz->addr; + /* Initialize shared data. */ + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { + LIST_INIT(&mlx5_shared_data->mem_event_cb_list); + rte_rwlock_init(&mlx5_shared_data->mem_event_rwlock); + } + rte_mem_event_callback_register("MLX5_MEM_EVENT_CB", + mlx5_mr_mem_event_cb, NULL); + } + rte_spinlock_unlock(&mlx5_shared_data_lock); +} + /** * Retrieve integer value from environment variable. * @@ -108,7 +179,7 @@ mlx5_getenv_int(const char *name) * A pointer to the callback data. * * @return - * a pointer to the allocate space. + * Allocated buffer, NULL otherwise and rte_errno is set. */ static void * mlx5_alloc_verbs_buf(size_t size, void *data) @@ -130,7 +201,8 @@ mlx5_alloc_verbs_buf(size_t size, void *data) } assert(data != NULL); ret = rte_malloc_socket(__func__, size, alignment, socket); - DEBUG("Extern alloc size: %lu, align: %lu: %p", size, alignment, ret); + if (!ret && size) + rte_errno = ENOMEM; return ret; } @@ -146,7 +218,6 @@ static void mlx5_free_verbs_buf(void *ptr, void *data __rte_unused) { assert(data != NULL); - DEBUG("Extern free request: %p", ptr); rte_free(ptr); } @@ -165,13 +236,13 @@ mlx5_dev_close(struct rte_eth_dev *dev) unsigned int i; int ret; - priv_lock(priv); - DEBUG("%p: closing device \"%s\"", - (void *)dev, - ((priv->ctx != NULL) ? priv->ctx->device->name : "")); + DRV_LOG(DEBUG, "port %u closing device \"%s\"", + dev->data->port_id, + ((priv->ctx != NULL) ? priv->ctx->device->name : "")); /* In case mlx5_dev_stop() has not been called. */ - priv_dev_interrupt_handler_uninstall(priv, dev); - priv_dev_traffic_disable(priv, dev); + mlx5_dev_interrupt_handler_uninstall(dev); + mlx5_traffic_disable(dev); + mlx5_flow_flush(dev, NULL); /* Prevent crashes when queues are still in use. */ dev->rx_pkt_burst = removed_rx_burst; dev->tx_pkt_burst = removed_tx_burst; @@ -179,7 +250,7 @@ mlx5_dev_close(struct rte_eth_dev *dev) /* XXX race condition if mlx5_rx_burst() is still running. */ usleep(1000); for (i = 0; (i != priv->rxqs_n); ++i) - mlx5_priv_rxq_release(priv, i); + mlx5_rxq_release(dev, i); priv->rxqs_n = 0; priv->rxqs = NULL; } @@ -187,10 +258,12 @@ mlx5_dev_close(struct rte_eth_dev *dev) /* XXX race condition if mlx5_tx_burst() is still running. */ usleep(1000); for (i = 0; (i != priv->txqs_n); ++i) - mlx5_priv_txq_release(priv, i); + mlx5_txq_release(dev, i); priv->txqs_n = 0; priv->txqs = NULL; } + mlx5_mprq_free_mp(dev); + mlx5_mr_release(dev); if (priv->pd != NULL) { assert(priv->ctx != NULL); claim_zero(mlx5_glue->dealloc_pd(priv->pd)); @@ -202,33 +275,64 @@ mlx5_dev_close(struct rte_eth_dev *dev) if (priv->reta_idx != NULL) rte_free(priv->reta_idx); if (priv->primary_socket) - priv_socket_uninit(priv); - ret = mlx5_priv_hrxq_ibv_verify(priv); + mlx5_socket_uninit(dev); + if (priv->config.vf) + mlx5_nl_mac_addr_flush(dev); + if (priv->nl_socket_route >= 0) + close(priv->nl_socket_route); + if (priv->nl_socket_rdma >= 0) + close(priv->nl_socket_rdma); + if (priv->mnl_socket) + mlx5_nl_flow_socket_destroy(priv->mnl_socket); + ret = mlx5_hrxq_ibv_verify(dev); if (ret) - WARN("%p: some Hash Rx queue still remain", (void *)priv); - ret = mlx5_priv_ind_table_ibv_verify(priv); + DRV_LOG(WARNING, "port %u some hash Rx queue still remain", + dev->data->port_id); + ret = mlx5_ind_table_ibv_verify(dev); if (ret) - WARN("%p: some Indirection table still remain", (void *)priv); - ret = mlx5_priv_rxq_ibv_verify(priv); + DRV_LOG(WARNING, "port %u some indirection table still remain", + dev->data->port_id); + ret = mlx5_rxq_ibv_verify(dev); if (ret) - WARN("%p: some Verbs Rx queue still remain", (void *)priv); - ret = mlx5_priv_rxq_verify(priv); + DRV_LOG(WARNING, "port %u some Verbs Rx queue still remain", + dev->data->port_id); + ret = mlx5_rxq_verify(dev); if (ret) - WARN("%p: some Rx Queues still remain", (void *)priv); - ret = mlx5_priv_txq_ibv_verify(priv); + DRV_LOG(WARNING, "port %u some Rx queues still remain", + dev->data->port_id); + ret = mlx5_txq_ibv_verify(dev); if (ret) - WARN("%p: some Verbs Tx queue still remain", (void *)priv); - ret = mlx5_priv_txq_verify(priv); + DRV_LOG(WARNING, "port %u some Verbs Tx queue still remain", + dev->data->port_id); + ret = mlx5_txq_verify(dev); if (ret) - WARN("%p: some Tx Queues still remain", (void *)priv); - ret = priv_flow_verify(priv); + DRV_LOG(WARNING, "port %u some Tx queues still remain", + dev->data->port_id); + ret = mlx5_flow_verify(dev); if (ret) - WARN("%p: some flows still remain", (void *)priv); - ret = priv_mr_verify(priv); - if (ret) - WARN("%p: some Memory Region still remain", (void *)priv); - priv_unlock(priv); + DRV_LOG(WARNING, "port %u some flows still remain", + dev->data->port_id); + if (priv->domain_id != RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) { + unsigned int c = 0; + unsigned int i = mlx5_dev_to_port_id(dev->device, NULL, 0); + uint16_t port_id[i]; + + i = RTE_MIN(mlx5_dev_to_port_id(dev->device, port_id, i), i); + while (i--) { + struct priv *opriv = + rte_eth_devices[port_id[i]].data->dev_private; + + if (!opriv || + opriv->domain_id != priv->domain_id || + &rte_eth_devices[port_id[i]] == dev) + continue; + ++c; + } + if (!c) + claim_zero(rte_eth_switch_domain_free(priv->domain_id)); + } memset(priv, 0, sizeof(*priv)); + priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID; } const struct eth_dev_ops mlx5_dev_ops = { @@ -260,6 +364,7 @@ const struct eth_dev_ops mlx5_dev_ops = { .mac_addr_remove = mlx5_mac_addr_remove, .mac_addr_add = mlx5_mac_addr_add, .mac_addr_set = mlx5_mac_addr_set, + .set_mc_addr_list = mlx5_set_mc_addr_list, .mtu_set = mlx5_dev_set_mtu, .vlan_strip_queue_set = mlx5_vlan_strip_queue_set, .vlan_offload_set = mlx5_vlan_offload_set, @@ -294,6 +399,10 @@ const struct eth_dev_ops mlx5_dev_ops_isolate = { .dev_set_link_down = mlx5_set_link_down, .dev_set_link_up = mlx5_set_link_up, .dev_close = mlx5_dev_close, + .promiscuous_enable = mlx5_promiscuous_enable, + .promiscuous_disable = mlx5_promiscuous_disable, + .allmulticast_enable = mlx5_allmulticast_enable, + .allmulticast_disable = mlx5_allmulticast_disable, .link_update = mlx5_link_update, .stats_get = mlx5_stats_get, .stats_reset = mlx5_stats_reset, @@ -312,6 +421,7 @@ const struct eth_dev_ops mlx5_dev_ops_isolate = { .mac_addr_remove = mlx5_mac_addr_remove, .mac_addr_add = mlx5_mac_addr_add, .mac_addr_set = mlx5_mac_addr_set, + .set_mc_addr_list = mlx5_set_mc_addr_list, .mtu_set = mlx5_dev_set_mtu, .vlan_strip_queue_set = mlx5_vlan_strip_queue_set, .vlan_offload_set = mlx5_vlan_offload_set, @@ -323,39 +433,6 @@ const struct eth_dev_ops mlx5_dev_ops_isolate = { .is_removed = mlx5_is_removed, }; -static struct { - struct rte_pci_addr pci_addr; /* associated PCI address */ - uint32_t ports; /* physical ports bitfield. */ -} mlx5_dev[32]; - -/** - * Get device index in mlx5_dev[] from PCI bus address. - * - * @param[in] pci_addr - * PCI bus address to look for. - * - * @return - * mlx5_dev[] index on success, -1 on failure. - */ -static int -mlx5_dev_idx(struct rte_pci_addr *pci_addr) -{ - unsigned int i; - int ret = -1; - - assert(pci_addr != NULL); - for (i = 0; (i != RTE_DIM(mlx5_dev)); ++i) { - if ((mlx5_dev[i].pci_addr.domain == pci_addr->domain) && - (mlx5_dev[i].pci_addr.bus == pci_addr->bus) && - (mlx5_dev[i].pci_addr.devid == pci_addr->devid) && - (mlx5_dev[i].pci_addr.function == pci_addr->function)) - return i; - if ((mlx5_dev[i].ports == 0) && (ret == -1)) - ret = i; - } - return ret; -} - /** * Verify and store value for device argument. * @@ -367,7 +444,7 @@ mlx5_dev_idx(struct rte_pci_addr *pci_addr) * User data. * * @return - * 0 on success, negative errno value on failure. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int mlx5_args_check(const char *key, const char *val, void *opaque) @@ -375,14 +452,26 @@ mlx5_args_check(const char *key, const char *val, void *opaque) struct mlx5_dev_config *config = opaque; unsigned long tmp; + /* No-op, port representors are processed in mlx5_dev_spawn(). */ + if (!strcmp(MLX5_REPRESENTOR, key)) + return 0; errno = 0; tmp = strtoul(val, NULL, 0); if (errno) { - WARN("%s: \"%s\" is not a valid integer", key, val); - return errno; + rte_errno = errno; + DRV_LOG(WARNING, "%s: \"%s\" is not a valid integer", key, val); + return -rte_errno; } if (strcmp(MLX5_RXQ_CQE_COMP_EN, key) == 0) { config->cqe_comp = !!tmp; + } else if (strcmp(MLX5_RX_MPRQ_EN, key) == 0) { + config->mprq.enabled = !!tmp; + } else if (strcmp(MLX5_RX_MPRQ_LOG_STRIDE_NUM, key) == 0) { + config->mprq.stride_num_n = tmp; + } else if (strcmp(MLX5_RX_MPRQ_MAX_MEMCPY_LEN, key) == 0) { + config->mprq.max_memcpy_len = tmp; + } else if (strcmp(MLX5_RXQS_MIN_MPRQ, key) == 0) { + config->mprq.min_rxqs_num = tmp; } else if (strcmp(MLX5_TXQ_INLINE, key) == 0) { config->txq_inline = tmp; } else if (strcmp(MLX5_TXQS_MIN_INLINE, key) == 0) { @@ -397,9 +486,14 @@ mlx5_args_check(const char *key, const char *val, void *opaque) config->tx_vec_en = !!tmp; } else if (strcmp(MLX5_RX_VEC_EN, key) == 0) { config->rx_vec_en = !!tmp; + } else if (strcmp(MLX5_L3_VXLAN_EN, key) == 0) { + config->l3_vxlan_en = !!tmp; + } else if (strcmp(MLX5_VF_NL_EN, key) == 0) { + config->vf_nl_en = !!tmp; } else { - WARN("%s: unknown parameter", key); - return -EINVAL; + DRV_LOG(WARNING, "%s: unknown parameter", key); + rte_errno = EINVAL; + return -rte_errno; } return 0; } @@ -413,13 +507,17 @@ mlx5_args_check(const char *key, const char *val, void *opaque) * Device arguments structure. * * @return - * 0 on success, errno value on failure. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int mlx5_args(struct mlx5_dev_config *config, struct rte_devargs *devargs) { const char **params = (const char *[]){ MLX5_RXQ_CQE_COMP_EN, + MLX5_RX_MPRQ_EN, + MLX5_RX_MPRQ_LOG_STRIDE_NUM, + MLX5_RX_MPRQ_MAX_MEMCPY_LEN, + MLX5_RXQS_MIN_MPRQ, MLX5_TXQ_INLINE, MLX5_TXQS_MIN_INLINE, MLX5_TXQ_MPW_EN, @@ -427,6 +525,9 @@ mlx5_args(struct mlx5_dev_config *config, struct rte_devargs *devargs) MLX5_TXQ_MAX_INLINE_LEN, MLX5_TX_VEC_EN, MLX5_RX_VEC_EN, + MLX5_L3_VXLAN_EN, + MLX5_VF_NL_EN, + MLX5_REPRESENTOR, NULL, }; struct rte_kvargs *kvlist; @@ -444,9 +545,10 @@ mlx5_args(struct mlx5_dev_config *config, struct rte_devargs *devargs) if (rte_kvargs_count(kvlist, params[i])) { ret = rte_kvargs_process(kvlist, params[i], mlx5_args_check, config); - if (ret != 0) { + if (ret) { + rte_errno = EINVAL; rte_kvargs_free(kvlist); - return ret; + return -rte_errno; } } } @@ -465,50 +567,60 @@ static struct rte_pci_driver mlx5_driver; */ static void *uar_base; +static int +find_lower_va_bound(const struct rte_memseg_list *msl __rte_unused, + const struct rte_memseg *ms, void *arg) +{ + void **addr = arg; + + if (*addr == NULL) + *addr = ms->addr; + else + *addr = RTE_MIN(*addr, ms->addr); + + return 0; +} + /** * Reserve UAR address space for primary process. * - * @param[in] priv - * Pointer to private structure. + * @param[in] dev + * Pointer to Ethernet device. * * @return - * 0 on success, errno value on failure. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int -priv_uar_init_primary(struct priv *priv) +mlx5_uar_init_primary(struct rte_eth_dev *dev) { + struct priv *priv = dev->data->dev_private; void *addr = (void *)0; - int i; - const struct rte_mem_config *mcfg; - int ret; if (uar_base) { /* UAR address space mapped. */ priv->uar_base = uar_base; return 0; } /* find out lower bound of hugepage segments */ - mcfg = rte_eal_get_configuration()->mem_config; - for (i = 0; i < RTE_MAX_MEMSEG && mcfg->memseg[i].addr; i++) { - if (addr) - addr = RTE_MIN(addr, mcfg->memseg[i].addr); - else - addr = mcfg->memseg[i].addr; - } + rte_memseg_walk(find_lower_va_bound, &addr); + /* keep distance to hugepages to minimize potential conflicts. */ - addr = RTE_PTR_SUB(addr, MLX5_UAR_OFFSET + MLX5_UAR_SIZE); + addr = RTE_PTR_SUB(addr, (uintptr_t)(MLX5_UAR_OFFSET + MLX5_UAR_SIZE)); /* anonymous mmap, no real memory consumption. */ addr = mmap(addr, MLX5_UAR_SIZE, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); if (addr == MAP_FAILED) { - ERROR("Failed to reserve UAR address space, please adjust " - "MLX5_UAR_SIZE or try --base-virtaddr"); - ret = ENOMEM; - return ret; + DRV_LOG(ERR, + "port %u failed to reserve UAR address space, please" + " adjust MLX5_UAR_SIZE or try --base-virtaddr", + dev->data->port_id); + rte_errno = ENOMEM; + return -rte_errno; } /* Accept either same addr or a new addr returned from mmap if target * range occupied. */ - INFO("Reserved UAR address space: %p", addr); + DRV_LOG(INFO, "port %u reserved UAR address space: %p", + dev->data->port_id, addr); priv->uar_base = addr; /* for primary and secondary UAR re-mmap. */ uar_base = addr; /* process local, don't reserve again. */ return 0; @@ -518,17 +630,17 @@ priv_uar_init_primary(struct priv *priv) * Reserve UAR address space for secondary process, align with * primary process. * - * @param[in] priv - * Pointer to private structure. + * @param[in] dev + * Pointer to Ethernet device. * * @return - * 0 on success, errno value on failure. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int -priv_uar_init_secondary(struct priv *priv) +mlx5_uar_init_secondary(struct rte_eth_dev *dev) { + struct priv *priv = dev->data->dev_private; void *addr; - int ret; assert(priv->uar_base); if (uar_base) { /* already reserved. */ @@ -539,467 +651,802 @@ priv_uar_init_secondary(struct priv *priv) addr = mmap(priv->uar_base, MLX5_UAR_SIZE, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); if (addr == MAP_FAILED) { - ERROR("UAR mmap failed: %p size: %llu", - priv->uar_base, MLX5_UAR_SIZE); - ret = ENXIO; - return ret; + DRV_LOG(ERR, "port %u UAR mmap failed: %p size: %llu", + dev->data->port_id, priv->uar_base, MLX5_UAR_SIZE); + rte_errno = ENXIO; + return -rte_errno; } if (priv->uar_base != addr) { - ERROR("UAR address %p size %llu occupied, please adjust " - "MLX5_UAR_OFFSET or try EAL parameter --base-virtaddr", - priv->uar_base, MLX5_UAR_SIZE); - ret = ENXIO; - return ret; + DRV_LOG(ERR, + "port %u UAR address %p size %llu occupied, please" + " adjust MLX5_UAR_OFFSET or try EAL parameter" + " --base-virtaddr", + dev->data->port_id, priv->uar_base, MLX5_UAR_SIZE); + rte_errno = ENXIO; + return -rte_errno; } uar_base = addr; /* process local, don't reserve again */ - INFO("Reserved UAR address space: %p", addr); + DRV_LOG(INFO, "port %u reserved UAR address space: %p", + dev->data->port_id, addr); return 0; } /** - * DPDK callback to register a PCI device. + * Spawn an Ethernet device from Verbs information. * - * This function creates an Ethernet device for each port of a given - * PCI device. - * - * @param[in] pci_drv - * PCI driver structure (mlx5_driver). - * @param[in] pci_dev - * PCI device information. + * @param dpdk_dev + * Backing DPDK device. + * @param ibv_dev + * Verbs device. + * @param vf + * If nonzero, enable VF-specific features. + * @param[in] switch_info + * Switch properties of Ethernet device. * * @return - * 0 on success, negative errno value on failure. + * A valid Ethernet device object on success, NULL otherwise and rte_errno + * is set. The following error is defined: + * + * EBUSY: device is not supposed to be spawned. */ -static int -mlx5_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev) +static struct rte_eth_dev * +mlx5_dev_spawn(struct rte_device *dpdk_dev, + struct ibv_device *ibv_dev, + int vf, + const struct mlx5_switch_info *switch_info) { - struct ibv_device **list; - struct ibv_device *ibv_dev; + struct ibv_context *ctx; + struct ibv_device_attr_ex attr; + struct ibv_port_attr port_attr; + struct ibv_pd *pd = NULL; + struct mlx5dv_context dv_attr = { .comp_mask = 0 }; + struct mlx5_dev_config config = { + .vf = !!vf, + .tx_vec_en = 1, + .rx_vec_en = 1, + .mpw_hdr_dseg = 0, + .txq_inline = MLX5_ARG_UNSET, + .txqs_inline = MLX5_ARG_UNSET, + .inline_max_packet_sz = MLX5_ARG_UNSET, + .vf_nl_en = 1, + .mprq = { + .enabled = 0, + .stride_num_n = MLX5_MPRQ_STRIDE_NUM_N, + .max_memcpy_len = MLX5_MPRQ_MEMCPY_DEFAULT_LEN, + .min_rxqs_num = MLX5_MPRQ_MIN_RXQS, + }, + }; + struct rte_eth_dev *eth_dev = NULL; + struct priv *priv = NULL; int err = 0; - struct ibv_context *attr_ctx = NULL; - struct ibv_device_attr_ex device_attr; - unsigned int sriov; unsigned int mps; unsigned int cqe_comp; unsigned int tunnel_en = 0; - int idx; - int i; - struct mlx5dv_context attrs_out; + unsigned int mpls_en = 0; + unsigned int swp = 0; + unsigned int mprq = 0; + unsigned int mprq_min_stride_size_n = 0; + unsigned int mprq_max_stride_size_n = 0; + unsigned int mprq_min_stride_num_n = 0; + unsigned int mprq_max_stride_num_n = 0; #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT - struct ibv_counter_set_description cs_desc; + struct ibv_counter_set_description cs_desc = { .counter_type = 0 }; #endif + struct ether_addr mac; + char name[RTE_ETH_NAME_MAX_LEN]; + int own_domain_id = 0; + unsigned int i; - (void)pci_drv; - assert(pci_drv == &mlx5_driver); - /* Get mlx5_dev[] index. */ - idx = mlx5_dev_idx(&pci_dev->addr); - if (idx == -1) { - ERROR("this driver cannot support any more adapters"); - return -ENOMEM; - } - DEBUG("using driver device index %d", idx); - - /* Save PCI address. */ - mlx5_dev[idx].pci_addr = pci_dev->addr; - list = mlx5_glue->get_device_list(&i); - if (list == NULL) { - assert(errno); - if (errno == ENOSYS) - ERROR("cannot list devices, is ib_uverbs loaded?"); - return -errno; - } - assert(i >= 0); - /* - * For each listed device, check related sysfs entry against - * the provided PCI ID. - */ - while (i != 0) { - struct rte_pci_addr pci_addr; + /* Determine if this port representor is supposed to be spawned. */ + if (switch_info->representor && dpdk_dev->devargs) { + struct rte_eth_devargs eth_da; - --i; - DEBUG("checking device \"%s\"", list[i]->name); - if (mlx5_ibv_device_to_pci_addr(list[i], &pci_addr)) - continue; - if ((pci_dev->addr.domain != pci_addr.domain) || - (pci_dev->addr.bus != pci_addr.bus) || - (pci_dev->addr.devid != pci_addr.devid) || - (pci_dev->addr.function != pci_addr.function)) - continue; - sriov = ((pci_dev->id.device_id == - PCI_DEVICE_ID_MELLANOX_CONNECTX4VF) || - (pci_dev->id.device_id == - PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF) || - (pci_dev->id.device_id == - PCI_DEVICE_ID_MELLANOX_CONNECTX5VF) || - (pci_dev->id.device_id == - PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF)); - switch (pci_dev->id.device_id) { - case PCI_DEVICE_ID_MELLANOX_CONNECTX4: - tunnel_en = 1; - break; - case PCI_DEVICE_ID_MELLANOX_CONNECTX4LX: - case PCI_DEVICE_ID_MELLANOX_CONNECTX5: - case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF: - case PCI_DEVICE_ID_MELLANOX_CONNECTX5EX: - case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF: - tunnel_en = 1; - break; - default: - break; + err = rte_eth_devargs_parse(dpdk_dev->devargs->args, ð_da); + if (err) { + rte_errno = -err; + DRV_LOG(ERR, "failed to process device arguments: %s", + strerror(rte_errno)); + return NULL; } - INFO("PCI information matches, using device \"%s\"" - " (SR-IOV: %s)", - list[i]->name, - sriov ? "true" : "false"); - attr_ctx = mlx5_glue->open_device(list[i]); - err = errno; - break; - } - if (attr_ctx == NULL) { - mlx5_glue->free_device_list(list); - switch (err) { - case 0: - ERROR("cannot access device, is mlx5_ib loaded?"); - return -ENODEV; - case EINVAL: - ERROR("cannot use device, are drivers up to date?"); - return -EINVAL; + for (i = 0; i < eth_da.nb_representor_ports; ++i) + if (eth_da.representor_ports[i] == + (uint16_t)switch_info->port_name) + break; + if (i == eth_da.nb_representor_ports) { + rte_errno = EBUSY; + return NULL; } - assert(err > 0); - return -err; } - ibv_dev = list[i]; - - DEBUG("device opened"); + /* Prepare shared data between primary and secondary process. */ + mlx5_prepare_shared_data(); + errno = 0; + ctx = mlx5_glue->open_device(ibv_dev); + if (!ctx) { + rte_errno = errno ? errno : ENODEV; + return NULL; + } +#ifdef HAVE_IBV_MLX5_MOD_SWP + dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_SWP; +#endif /* * Multi-packet send is supported by ConnectX-4 Lx PF as well * as all ConnectX-5 devices. */ - mlx5_glue->dv_query_device(attr_ctx, &attrs_out); - if (attrs_out.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) { - if (attrs_out.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) { - DEBUG("Enhanced MPW is supported"); +#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT + dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS; +#endif +#ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT + dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_STRIDING_RQ; +#endif + mlx5_glue->dv_query_device(ctx, &dv_attr); + if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) { + if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) { + DRV_LOG(DEBUG, "enhanced MPW is supported"); mps = MLX5_MPW_ENHANCED; } else { - DEBUG("MPW is supported"); + DRV_LOG(DEBUG, "MPW is supported"); mps = MLX5_MPW; } } else { - DEBUG("MPW isn't supported"); + DRV_LOG(DEBUG, "MPW isn't supported"); mps = MLX5_MPW_DISABLED; } + config.mps = mps; +#ifdef HAVE_IBV_MLX5_MOD_SWP + if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_SWP) + swp = dv_attr.sw_parsing_caps.sw_parsing_offloads; + DRV_LOG(DEBUG, "SWP support: %u", swp); +#endif + config.swp = !!swp; +#ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT + if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_STRIDING_RQ) { + struct mlx5dv_striding_rq_caps mprq_caps = + dv_attr.striding_rq_caps; + + DRV_LOG(DEBUG, "\tmin_single_stride_log_num_of_bytes: %d", + mprq_caps.min_single_stride_log_num_of_bytes); + DRV_LOG(DEBUG, "\tmax_single_stride_log_num_of_bytes: %d", + mprq_caps.max_single_stride_log_num_of_bytes); + DRV_LOG(DEBUG, "\tmin_single_wqe_log_num_of_strides: %d", + mprq_caps.min_single_wqe_log_num_of_strides); + DRV_LOG(DEBUG, "\tmax_single_wqe_log_num_of_strides: %d", + mprq_caps.max_single_wqe_log_num_of_strides); + DRV_LOG(DEBUG, "\tsupported_qpts: %d", + mprq_caps.supported_qpts); + DRV_LOG(DEBUG, "device supports Multi-Packet RQ"); + mprq = 1; + mprq_min_stride_size_n = + mprq_caps.min_single_stride_log_num_of_bytes; + mprq_max_stride_size_n = + mprq_caps.max_single_stride_log_num_of_bytes; + mprq_min_stride_num_n = + mprq_caps.min_single_wqe_log_num_of_strides; + mprq_max_stride_num_n = + mprq_caps.max_single_wqe_log_num_of_strides; + config.mprq.stride_num_n = RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N, + mprq_min_stride_num_n); + } +#endif if (RTE_CACHE_LINE_SIZE == 128 && - !(attrs_out.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP)) + !(dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP)) cqe_comp = 0; else cqe_comp = 1; - if (mlx5_glue->query_device_ex(attr_ctx, NULL, &device_attr)) + config.cqe_comp = cqe_comp; +#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT + if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS) { + tunnel_en = ((dv_attr.tunnel_offloads_caps & + MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN) && + (dv_attr.tunnel_offloads_caps & + MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE)); + } + DRV_LOG(DEBUG, "tunnel offloading is %ssupported", + tunnel_en ? "" : "not "); +#else + DRV_LOG(WARNING, + "tunnel offloading disabled due to old OFED/rdma-core version"); +#endif + config.tunnel_en = tunnel_en; +#ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT + mpls_en = ((dv_attr.tunnel_offloads_caps & + MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_GRE) && + (dv_attr.tunnel_offloads_caps & + MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_UDP)); + DRV_LOG(DEBUG, "MPLS over GRE/UDP tunnel offloading is %ssupported", + mpls_en ? "" : "not "); +#else + DRV_LOG(WARNING, "MPLS over GRE/UDP tunnel offloading disabled due to" + " old OFED/rdma-core version or firmware configuration"); +#endif + config.mpls_en = mpls_en; + err = mlx5_glue->query_device_ex(ctx, NULL, &attr); + if (err) { + DEBUG("ibv_query_device_ex() failed"); goto error; - INFO("%u port(s) detected", device_attr.orig_attr.phys_port_cnt); - - for (i = 0; i < device_attr.orig_attr.phys_port_cnt; i++) { - char name[RTE_ETH_NAME_MAX_LEN]; - int len; - uint32_t port = i + 1; /* ports are indexed from one */ - uint32_t test = (1 << i); - struct ibv_context *ctx = NULL; - struct ibv_port_attr port_attr; - struct ibv_pd *pd = NULL; - struct priv *priv = NULL; - struct rte_eth_dev *eth_dev; - struct ibv_device_attr_ex device_attr_ex; - struct ether_addr mac; - uint16_t num_vfs = 0; - struct ibv_device_attr_ex device_attr; - struct mlx5_dev_config config = { - .cqe_comp = cqe_comp, - .mps = mps, - .tunnel_en = tunnel_en, - .tx_vec_en = 1, - .rx_vec_en = 1, - .mpw_hdr_dseg = 0, - .txq_inline = MLX5_ARG_UNSET, - .txqs_inline = MLX5_ARG_UNSET, - .inline_max_packet_sz = MLX5_ARG_UNSET, - }; - - len = snprintf(name, sizeof(name), PCI_PRI_FMT, - pci_dev->addr.domain, pci_dev->addr.bus, - pci_dev->addr.devid, pci_dev->addr.function); - if (device_attr.orig_attr.phys_port_cnt > 1) - snprintf(name + len, sizeof(name), " port %u", i); - - mlx5_dev[idx].ports |= test; - - if (rte_eal_process_type() == RTE_PROC_SECONDARY) { - eth_dev = rte_eth_dev_attach_secondary(name); - if (eth_dev == NULL) { - ERROR("can not attach rte ethdev"); - err = ENOMEM; - goto error; - } - eth_dev->device = &pci_dev->device; - eth_dev->dev_ops = &mlx5_dev_sec_ops; - priv = eth_dev->data->dev_private; - err = priv_uar_init_secondary(priv); - if (err < 0) { - err = -err; - goto error; - } - /* Receive command fd from primary process */ - err = priv_socket_connect(priv); - if (err < 0) { - err = -err; - goto error; - } - /* Remap UAR for Tx queues. */ - err = priv_tx_uar_remap(priv, err); - if (err) - goto error; - /* - * Ethdev pointer is still required as input since - * the primary device is not accessible from the - * secondary process. - */ - eth_dev->rx_pkt_burst = - priv_select_rx_function(priv, eth_dev); - eth_dev->tx_pkt_burst = - priv_select_tx_function(priv, eth_dev); - continue; - } - - DEBUG("using port %u (%08" PRIx32 ")", port, test); - - ctx = mlx5_glue->open_device(ibv_dev); - if (ctx == NULL) { - err = ENODEV; - goto port_error; + } + if (!switch_info->representor) + rte_strlcpy(name, dpdk_dev->name, sizeof(name)); + else + snprintf(name, sizeof(name), "%s_representor_%u", + dpdk_dev->name, switch_info->port_name); + DRV_LOG(DEBUG, "naming Ethernet device \"%s\"", name); + if (rte_eal_process_type() == RTE_PROC_SECONDARY) { + eth_dev = rte_eth_dev_attach_secondary(name); + if (eth_dev == NULL) { + DRV_LOG(ERR, "can not attach rte ethdev"); + rte_errno = ENOMEM; + err = rte_errno; + goto error; } - - mlx5_glue->query_device_ex(ctx, NULL, &device_attr); - /* Check port status. */ - err = mlx5_glue->query_port(ctx, port, &port_attr); + eth_dev->device = dpdk_dev; + eth_dev->dev_ops = &mlx5_dev_sec_ops; + err = mlx5_uar_init_secondary(eth_dev); if (err) { - ERROR("port query failed: %s", strerror(err)); - goto port_error; + err = rte_errno; + goto error; } - - if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) { - ERROR("port %d is not configured in Ethernet mode", - port); - err = EINVAL; - goto port_error; + /* Receive command fd from primary process */ + err = mlx5_socket_connect(eth_dev); + if (err < 0) { + err = rte_errno; + goto error; } - - if (port_attr.state != IBV_PORT_ACTIVE) - DEBUG("port %d is not active: \"%s\" (%d)", - port, mlx5_glue->port_state_str(port_attr.state), - port_attr.state); - - /* Allocate protection domain. */ - pd = mlx5_glue->alloc_pd(ctx); - if (pd == NULL) { - ERROR("PD allocation failure"); - err = ENOMEM; - goto port_error; + /* Remap UAR for Tx queues. */ + err = mlx5_tx_uar_remap(eth_dev, err); + if (err) { + err = rte_errno; + goto error; } - - mlx5_dev[idx].ports |= test; - - /* from rte_ethdev.c */ - priv = rte_zmalloc("ethdev private structure", - sizeof(*priv), - RTE_CACHE_LINE_SIZE); - if (priv == NULL) { - ERROR("priv allocation failure"); - err = ENOMEM; - goto port_error; + /* + * Ethdev pointer is still required as input since + * the primary device is not accessible from the + * secondary process. + */ + eth_dev->rx_pkt_burst = mlx5_select_rx_function(eth_dev); + eth_dev->tx_pkt_burst = mlx5_select_tx_function(eth_dev); + claim_zero(mlx5_glue->close_device(ctx)); + return eth_dev; + } + /* Check port status. */ + err = mlx5_glue->query_port(ctx, 1, &port_attr); + if (err) { + DRV_LOG(ERR, "port query failed: %s", strerror(err)); + goto error; + } + if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) { + DRV_LOG(ERR, "port is not configured in Ethernet mode"); + err = EINVAL; + goto error; + } + if (port_attr.state != IBV_PORT_ACTIVE) + DRV_LOG(DEBUG, "port is not active: \"%s\" (%d)", + mlx5_glue->port_state_str(port_attr.state), + port_attr.state); + /* Allocate protection domain. */ + pd = mlx5_glue->alloc_pd(ctx); + if (pd == NULL) { + DRV_LOG(ERR, "PD allocation failure"); + err = ENOMEM; + goto error; + } + priv = rte_zmalloc("ethdev private structure", + sizeof(*priv), + RTE_CACHE_LINE_SIZE); + if (priv == NULL) { + DRV_LOG(ERR, "priv allocation failure"); + err = ENOMEM; + goto error; + } + priv->ctx = ctx; + strncpy(priv->ibdev_name, priv->ctx->device->name, + sizeof(priv->ibdev_name)); + strncpy(priv->ibdev_path, priv->ctx->device->ibdev_path, + sizeof(priv->ibdev_path)); + priv->device_attr = attr; + priv->pd = pd; + priv->mtu = ETHER_MTU; +#ifndef RTE_ARCH_64 + /* Initialize UAR access locks for 32bit implementations. */ + rte_spinlock_init(&priv->uar_lock_cq); + for (i = 0; i < MLX5_UAR_PAGE_NUM_MAX; i++) + rte_spinlock_init(&priv->uar_lock[i]); +#endif + /* Some internal functions rely on Netlink sockets, open them now. */ + priv->nl_socket_rdma = mlx5_nl_init(NETLINK_RDMA); + priv->nl_socket_route = mlx5_nl_init(NETLINK_ROUTE); + priv->nl_sn = 0; + priv->representor = !!switch_info->representor; + priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID; + priv->representor_id = + switch_info->representor ? switch_info->port_name : -1; + /* + * Look for sibling devices in order to reuse their switch domain + * if any, otherwise allocate one. + */ + i = mlx5_dev_to_port_id(dpdk_dev, NULL, 0); + if (i > 0) { + uint16_t port_id[i]; + + i = RTE_MIN(mlx5_dev_to_port_id(dpdk_dev, port_id, i), i); + while (i--) { + const struct priv *opriv = + rte_eth_devices[port_id[i]].data->dev_private; + + if (!opriv || + opriv->domain_id == + RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) + continue; + priv->domain_id = opriv->domain_id; + break; } - - priv->ctx = ctx; - strncpy(priv->ibdev_path, priv->ctx->device->ibdev_path, - sizeof(priv->ibdev_path)); - priv->device_attr = device_attr; - priv->port = port; - priv->pd = pd; - priv->mtu = ETHER_MTU; - err = mlx5_args(&config, pci_dev->device.devargs); + } + if (priv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) { + err = rte_eth_switch_domain_alloc(&priv->domain_id); if (err) { - ERROR("failed to process device arguments: %s", - strerror(err)); - goto port_error; + err = rte_errno; + DRV_LOG(ERR, "unable to allocate switch domain: %s", + strerror(rte_errno)); + goto error; } - if (mlx5_glue->query_device_ex(ctx, NULL, &device_attr_ex)) { - ERROR("ibv_query_device_ex() failed"); - goto port_error; - } - - config.hw_csum = !!(device_attr_ex.device_cap_flags_ex & - IBV_DEVICE_RAW_IP_CSUM); - DEBUG("checksum offloading is %ssupported", - (config.hw_csum ? "" : "not ")); - -#ifdef HAVE_IBV_DEVICE_VXLAN_SUPPORT - config.hw_csum_l2tun = - !!(exp_device_attr.exp_device_cap_flags & - IBV_DEVICE_VXLAN_SUPPORT); -#endif - DEBUG("Rx L2 tunnel checksum offloads are %ssupported", - (config.hw_csum_l2tun ? "" : "not ")); - + own_domain_id = 1; + } + err = mlx5_args(&config, dpdk_dev->devargs); + if (err) { + err = rte_errno; + DRV_LOG(ERR, "failed to process device arguments: %s", + strerror(rte_errno)); + goto error; + } + config.hw_csum = !!(attr.device_cap_flags_ex & IBV_DEVICE_RAW_IP_CSUM); + DRV_LOG(DEBUG, "checksum offloading is %ssupported", + (config.hw_csum ? "" : "not ")); #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT - config.flow_counter_en = !!(device_attr.max_counter_sets); - mlx5_glue->describe_counter_set(ctx, 0, &cs_desc); - DEBUG("counter type = %d, num of cs = %ld, attributes = %d", - cs_desc.counter_type, cs_desc.num_of_cs, - cs_desc.attributes); + config.flow_counter_en = !!attr.max_counter_sets; + mlx5_glue->describe_counter_set(ctx, 0, &cs_desc); + DRV_LOG(DEBUG, "counter type = %d, num of cs = %ld, attributes = %d", + cs_desc.counter_type, cs_desc.num_of_cs, + cs_desc.attributes); #endif - config.ind_table_max_size = - device_attr_ex.rss_caps.max_rwq_indirection_table_size; - /* Remove this check once DPDK supports larger/variable - * indirection tables. */ - if (config.ind_table_max_size > - (unsigned int)ETH_RSS_RETA_SIZE_512) - config.ind_table_max_size = ETH_RSS_RETA_SIZE_512; - DEBUG("maximum RX indirection table size is %u", - config.ind_table_max_size); - config.hw_vlan_strip = !!(device_attr_ex.raw_packet_caps & - IBV_RAW_PACKET_CAP_CVLAN_STRIPPING); - DEBUG("VLAN stripping is %ssupported", - (config.hw_vlan_strip ? "" : "not ")); - - config.hw_fcs_strip = !!(device_attr_ex.raw_packet_caps & - IBV_RAW_PACKET_CAP_SCATTER_FCS); - DEBUG("FCS stripping configuration is %ssupported", - (config.hw_fcs_strip ? "" : "not ")); - + config.ind_table_max_size = + attr.rss_caps.max_rwq_indirection_table_size; + /* + * Remove this check once DPDK supports larger/variable + * indirection tables. + */ + if (config.ind_table_max_size > (unsigned int)ETH_RSS_RETA_SIZE_512) + config.ind_table_max_size = ETH_RSS_RETA_SIZE_512; + DRV_LOG(DEBUG, "maximum Rx indirection table size is %u", + config.ind_table_max_size); + config.hw_vlan_strip = !!(attr.raw_packet_caps & + IBV_RAW_PACKET_CAP_CVLAN_STRIPPING); + DRV_LOG(DEBUG, "VLAN stripping is %ssupported", + (config.hw_vlan_strip ? "" : "not ")); + config.hw_fcs_strip = !!(attr.raw_packet_caps & + IBV_RAW_PACKET_CAP_SCATTER_FCS); + DRV_LOG(DEBUG, "FCS stripping configuration is %ssupported", + (config.hw_fcs_strip ? "" : "not ")); #ifdef HAVE_IBV_WQ_FLAG_RX_END_PADDING - config.hw_padding = !!device_attr_ex.rx_pad_end_addr_align; + config.hw_padding = !!attr.rx_pad_end_addr_align; #endif - DEBUG("hardware RX end alignment padding is %ssupported", - (config.hw_padding ? "" : "not ")); - - priv_get_num_vfs(priv, &num_vfs); - config.sriov = (num_vfs || sriov); - config.tso = ((device_attr_ex.tso_caps.max_tso > 0) && - (device_attr_ex.tso_caps.supported_qpts & - (1 << IBV_QPT_RAW_PACKET))); - if (config.tso) - config.tso_max_payload_sz = - device_attr_ex.tso_caps.max_tso; - if (config.mps && !mps) { - ERROR("multi-packet send not supported on this device" - " (" MLX5_TXQ_MPW_EN ")"); - err = ENOTSUP; - goto port_error; - } - INFO("%sMPS is %s", - config.mps == MLX5_MPW_ENHANCED ? "Enhanced " : "", - config.mps != MLX5_MPW_DISABLED ? "enabled" : "disabled"); - if (config.cqe_comp && !cqe_comp) { - WARN("Rx CQE compression isn't supported"); - config.cqe_comp = 0; - } - err = priv_uar_init_primary(priv); - if (err) - goto port_error; - /* Configure the first MAC address by default. */ - if (priv_get_mac(priv, &mac.addr_bytes)) { - ERROR("cannot get MAC address, is mlx5_en loaded?" - " (errno: %s)", strerror(errno)); - err = ENODEV; - goto port_error; + DRV_LOG(DEBUG, "hardware Rx end alignment padding is %ssupported", + (config.hw_padding ? "" : "not ")); + config.tso = (attr.tso_caps.max_tso > 0 && + (attr.tso_caps.supported_qpts & + (1 << IBV_QPT_RAW_PACKET))); + if (config.tso) + config.tso_max_payload_sz = attr.tso_caps.max_tso; + if (config.mps && !mps) { + DRV_LOG(ERR, + "multi-packet send not supported on this device" + " (" MLX5_TXQ_MPW_EN ")"); + err = ENOTSUP; + goto error; + } + DRV_LOG(INFO, "%sMPS is %s", + config.mps == MLX5_MPW_ENHANCED ? "enhanced " : "", + config.mps != MLX5_MPW_DISABLED ? "enabled" : "disabled"); + if (config.cqe_comp && !cqe_comp) { + DRV_LOG(WARNING, "Rx CQE compression isn't supported"); + config.cqe_comp = 0; + } + if (config.mprq.enabled && mprq) { + if (config.mprq.stride_num_n > mprq_max_stride_num_n || + config.mprq.stride_num_n < mprq_min_stride_num_n) { + config.mprq.stride_num_n = + RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N, + mprq_min_stride_num_n); + DRV_LOG(WARNING, + "the number of strides" + " for Multi-Packet RQ is out of range," + " setting default value (%u)", + 1 << config.mprq.stride_num_n); } - INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x", - priv->port, - mac.addr_bytes[0], mac.addr_bytes[1], - mac.addr_bytes[2], mac.addr_bytes[3], - mac.addr_bytes[4], mac.addr_bytes[5]); + config.mprq.min_stride_size_n = mprq_min_stride_size_n; + config.mprq.max_stride_size_n = mprq_max_stride_size_n; + } else if (config.mprq.enabled && !mprq) { + DRV_LOG(WARNING, "Multi-Packet RQ isn't supported"); + config.mprq.enabled = 0; + } + eth_dev = rte_eth_dev_allocate(name); + if (eth_dev == NULL) { + DRV_LOG(ERR, "can not allocate rte ethdev"); + err = ENOMEM; + goto error; + } + if (priv->representor) + eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR; + eth_dev->data->dev_private = priv; + priv->dev_data = eth_dev->data; + eth_dev->data->mac_addrs = priv->mac; + eth_dev->device = dpdk_dev; + eth_dev->device->driver = &mlx5_driver.driver; + err = mlx5_uar_init_primary(eth_dev); + if (err) { + err = rte_errno; + goto error; + } + /* Configure the first MAC address by default. */ + if (mlx5_get_mac(eth_dev, &mac.addr_bytes)) { + DRV_LOG(ERR, + "port %u cannot get MAC address, is mlx5_en" + " loaded? (errno: %s)", + eth_dev->data->port_id, strerror(rte_errno)); + err = ENODEV; + goto error; + } + DRV_LOG(INFO, + "port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x", + eth_dev->data->port_id, + mac.addr_bytes[0], mac.addr_bytes[1], + mac.addr_bytes[2], mac.addr_bytes[3], + mac.addr_bytes[4], mac.addr_bytes[5]); #ifndef NDEBUG - { - char ifname[IF_NAMESIZE]; - - if (priv_get_ifname(priv, &ifname) == 0) - DEBUG("port %u ifname is \"%s\"", - priv->port, ifname); - else - DEBUG("port %u ifname is unknown", priv->port); - } + { + char ifname[IF_NAMESIZE]; + + if (mlx5_get_ifname(eth_dev, &ifname) == 0) + DRV_LOG(DEBUG, "port %u ifname is \"%s\"", + eth_dev->data->port_id, ifname); + else + DRV_LOG(DEBUG, "port %u ifname is unknown", + eth_dev->data->port_id); + } #endif - /* Get actual MTU if possible. */ - priv_get_mtu(priv, &priv->mtu); - DEBUG("port %u MTU is %u", priv->port, priv->mtu); + /* Get actual MTU if possible. */ + err = mlx5_get_mtu(eth_dev, &priv->mtu); + if (err) { + err = rte_errno; + goto error; + } + DRV_LOG(DEBUG, "port %u MTU is %u", eth_dev->data->port_id, + priv->mtu); + /* Initialize burst functions to prevent crashes before link-up. */ + eth_dev->rx_pkt_burst = removed_rx_burst; + eth_dev->tx_pkt_burst = removed_tx_burst; + eth_dev->dev_ops = &mlx5_dev_ops; + /* Register MAC address. */ + claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0)); + if (vf && config.vf_nl_en) + mlx5_nl_mac_addr_sync(eth_dev); + priv->mnl_socket = mlx5_nl_flow_socket_create(); + if (!priv->mnl_socket) { + err = -rte_errno; + DRV_LOG(WARNING, + "flow rules relying on switch offloads will not be" + " supported: cannot open libmnl socket: %s", + strerror(rte_errno)); + } else { + struct rte_flow_error error; + unsigned int ifindex = mlx5_ifindex(eth_dev); - eth_dev = rte_eth_dev_allocate(name); - if (eth_dev == NULL) { - ERROR("can not allocate rte ethdev"); - err = ENOMEM; - goto port_error; + if (!ifindex) { + err = -rte_errno; + error.message = + "cannot retrieve network interface index"; + } else { + err = mlx5_nl_flow_init(priv->mnl_socket, ifindex, + &error); + } + if (err) { + DRV_LOG(WARNING, + "flow rules relying on switch offloads will" + " not be supported: %s: %s", + error.message, strerror(rte_errno)); + mlx5_nl_flow_socket_destroy(priv->mnl_socket); + priv->mnl_socket = NULL; } - eth_dev->data->dev_private = priv; - eth_dev->data->mac_addrs = priv->mac; - eth_dev->device = &pci_dev->device; - rte_eth_copy_pci_info(eth_dev, pci_dev); - eth_dev->device->driver = &mlx5_driver.driver; - /* - * Initialize burst functions to prevent crashes before link-up. - */ - eth_dev->rx_pkt_burst = removed_rx_burst; - eth_dev->tx_pkt_burst = removed_tx_burst; - priv->dev = eth_dev; - eth_dev->dev_ops = &mlx5_dev_ops; - /* Register MAC address. */ - claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0)); - TAILQ_INIT(&priv->flows); - TAILQ_INIT(&priv->ctrl_flows); - - /* Hint libmlx5 to use PMD allocator for data plane resources */ - struct mlx5dv_ctx_allocators alctr = { - .alloc = &mlx5_alloc_verbs_buf, - .free = &mlx5_free_verbs_buf, - .data = priv, - }; - mlx5_glue->dv_set_context_attr(ctx, - MLX5DV_CTX_ATTR_BUF_ALLOCATORS, - (void *)((uintptr_t)&alctr)); - - /* Bring Ethernet device up. */ - DEBUG("forcing Ethernet interface up"); - priv_set_flags(priv, ~IFF_UP, IFF_UP); - /* Store device configuration on private structure. */ - priv->config = config; - continue; - -port_error: - if (priv) - rte_free(priv); - if (pd) - claim_zero(mlx5_glue->dealloc_pd(pd)); - if (ctx) - claim_zero(mlx5_glue->close_device(ctx)); - break; } - + TAILQ_INIT(&priv->flows); + TAILQ_INIT(&priv->ctrl_flows); + /* Hint libmlx5 to use PMD allocator for data plane resources */ + struct mlx5dv_ctx_allocators alctr = { + .alloc = &mlx5_alloc_verbs_buf, + .free = &mlx5_free_verbs_buf, + .data = priv, + }; + mlx5_glue->dv_set_context_attr(ctx, MLX5DV_CTX_ATTR_BUF_ALLOCATORS, + (void *)((uintptr_t)&alctr)); + /* Bring Ethernet device up. */ + DRV_LOG(DEBUG, "port %u forcing Ethernet interface up", + eth_dev->data->port_id); + mlx5_set_link_up(eth_dev); /* - * XXX if something went wrong in the loop above, there is a resource - * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as - * long as the dpdk does not provide a way to deallocate a ethdev and a - * way to enumerate the registered ethdevs to free the previous ones. + * Even though the interrupt handler is not installed yet, + * interrupts will still trigger on the asyn_fd from + * Verbs context returned by ibv_open_device(). */ - - /* no port found, complain */ - if (!mlx5_dev[idx].ports) { - err = ENODEV; + mlx5_link_update(eth_dev, 0); + /* Store device configuration on private structure. */ + priv->config = config; + /* Supported Verbs flow priority number detection. */ + err = mlx5_flow_discover_priorities(eth_dev); + if (err < 0) + goto error; + priv->config.flow_prio = err; + /* + * Once the device is added to the list of memory event + * callback, its global MR cache table cannot be expanded + * on the fly because of deadlock. If it overflows, lookup + * should be done by searching MR list linearly, which is slow. + */ + err = mlx5_mr_btree_init(&priv->mr.cache, + MLX5_MR_BTREE_CACHE_N * 2, + eth_dev->device->numa_node); + if (err) { + err = rte_errno; goto error; } - + /* Add device to memory callback list. */ + rte_rwlock_write_lock(&mlx5_shared_data->mem_event_rwlock); + LIST_INSERT_HEAD(&mlx5_shared_data->mem_event_cb_list, + priv, mem_event_cb); + rte_rwlock_write_unlock(&mlx5_shared_data->mem_event_rwlock); + return eth_dev; error: - if (attr_ctx) - claim_zero(mlx5_glue->close_device(attr_ctx)); - if (list) - mlx5_glue->free_device_list(list); - assert(err >= 0); - return -err; + if (priv) { + if (priv->nl_socket_route >= 0) + close(priv->nl_socket_route); + if (priv->nl_socket_rdma >= 0) + close(priv->nl_socket_rdma); + if (priv->mnl_socket) + mlx5_nl_flow_socket_destroy(priv->mnl_socket); + if (own_domain_id) + claim_zero(rte_eth_switch_domain_free(priv->domain_id)); + rte_free(priv); + } + if (pd) + claim_zero(mlx5_glue->dealloc_pd(pd)); + if (eth_dev) + rte_eth_dev_release_port(eth_dev); + if (ctx) + claim_zero(mlx5_glue->close_device(ctx)); + assert(err > 0); + rte_errno = err; + return NULL; +} + +/** Data associated with devices to spawn. */ +struct mlx5_dev_spawn_data { + unsigned int ifindex; /**< Network interface index. */ + struct mlx5_switch_info info; /**< Switch information. */ + struct ibv_device *ibv_dev; /**< Associated IB device. */ + struct rte_eth_dev *eth_dev; /**< Associated Ethernet device. */ +}; + +/** + * Comparison callback to sort device data. + * + * This is meant to be used with qsort(). + * + * @param a[in] + * Pointer to pointer to first data object. + * @param b[in] + * Pointer to pointer to second data object. + * + * @return + * 0 if both objects are equal, less than 0 if the first argument is less + * than the second, greater than 0 otherwise. + */ +static int +mlx5_dev_spawn_data_cmp(const void *a, const void *b) +{ + const struct mlx5_switch_info *si_a = + &((const struct mlx5_dev_spawn_data *)a)->info; + const struct mlx5_switch_info *si_b = + &((const struct mlx5_dev_spawn_data *)b)->info; + int ret; + + /* Master device first. */ + ret = si_b->master - si_a->master; + if (ret) + return ret; + /* Then representor devices. */ + ret = si_b->representor - si_a->representor; + if (ret) + return ret; + /* Unidentified devices come last in no specific order. */ + if (!si_a->representor) + return 0; + /* Order representors by name. */ + return si_a->port_name - si_b->port_name; +} + +/** + * DPDK callback to register a PCI device. + * + * This function spawns Ethernet devices out of a given PCI device. + * + * @param[in] pci_drv + * PCI driver structure (mlx5_driver). + * @param[in] pci_dev + * PCI device information. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static int +mlx5_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, + struct rte_pci_device *pci_dev) +{ + struct ibv_device **ibv_list; + unsigned int n = 0; + int vf; + int ret; + + assert(pci_drv == &mlx5_driver); + errno = 0; + ibv_list = mlx5_glue->get_device_list(&ret); + if (!ibv_list) { + rte_errno = errno ? errno : ENOSYS; + DRV_LOG(ERR, "cannot list devices, is ib_uverbs loaded?"); + return -rte_errno; + } + + struct ibv_device *ibv_match[ret + 1]; + + while (ret-- > 0) { + struct rte_pci_addr pci_addr; + + DRV_LOG(DEBUG, "checking device \"%s\"", ibv_list[ret]->name); + if (mlx5_ibv_device_to_pci_addr(ibv_list[ret], &pci_addr)) + continue; + if (pci_dev->addr.domain != pci_addr.domain || + pci_dev->addr.bus != pci_addr.bus || + pci_dev->addr.devid != pci_addr.devid || + pci_dev->addr.function != pci_addr.function) + continue; + DRV_LOG(INFO, "PCI information matches for device \"%s\"", + ibv_list[ret]->name); + ibv_match[n++] = ibv_list[ret]; + } + ibv_match[n] = NULL; + + struct mlx5_dev_spawn_data list[n]; + int nl_route = n ? mlx5_nl_init(NETLINK_ROUTE) : -1; + int nl_rdma = n ? mlx5_nl_init(NETLINK_RDMA) : -1; + unsigned int i; + unsigned int u; + + /* + * The existence of several matching entries (n > 1) means port + * representors have been instantiated. No existing Verbs call nor + * /sys entries can tell them apart, this can only be done through + * Netlink calls assuming kernel drivers are recent enough to + * support them. + * + * In the event of identification failure through Netlink, try again + * through sysfs, then either: + * + * 1. No device matches (n == 0), complain and bail out. + * 2. A single IB device matches (n == 1) and is not a representor, + * assume no switch support. + * 3. Otherwise no safe assumptions can be made; complain louder and + * bail out. + */ + for (i = 0; i != n; ++i) { + list[i].ibv_dev = ibv_match[i]; + list[i].eth_dev = NULL; + if (nl_rdma < 0) + list[i].ifindex = 0; + else + list[i].ifindex = mlx5_nl_ifindex + (nl_rdma, list[i].ibv_dev->name); + if (nl_route < 0 || + !list[i].ifindex || + mlx5_nl_switch_info(nl_route, list[i].ifindex, + &list[i].info) || + ((!list[i].info.representor && !list[i].info.master) && + mlx5_sysfs_switch_info(list[i].ifindex, &list[i].info))) { + list[i].ifindex = 0; + memset(&list[i].info, 0, sizeof(list[i].info)); + continue; + } + } + if (nl_rdma >= 0) + close(nl_rdma); + if (nl_route >= 0) + close(nl_route); + /* Count unidentified devices. */ + for (u = 0, i = 0; i != n; ++i) + if (!list[i].info.master && !list[i].info.representor) + ++u; + if (u) { + if (n == 1 && u == 1) { + /* Case #2. */ + DRV_LOG(INFO, "no switch support detected"); + } else { + /* Case #3. */ + DRV_LOG(ERR, + "unable to tell which of the matching devices" + " is the master (lack of kernel support?)"); + n = 0; + } + } + /* + * Sort list to probe devices in natural order for users convenience + * (i.e. master first, then representors from lowest to highest ID). + */ + if (n) + qsort(list, n, sizeof(*list), mlx5_dev_spawn_data_cmp); + switch (pci_dev->id.device_id) { + case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF: + case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF: + case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF: + case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF: + vf = 1; + break; + default: + vf = 0; + } + for (i = 0; i != n; ++i) { + uint32_t restore; + + list[i].eth_dev = mlx5_dev_spawn + (&pci_dev->device, list[i].ibv_dev, vf, &list[i].info); + if (!list[i].eth_dev) { + if (rte_errno != EBUSY) + break; + /* Device is disabled, ignore it. */ + continue; + } + restore = list[i].eth_dev->data->dev_flags; + rte_eth_copy_pci_info(list[i].eth_dev, pci_dev); + /* Restore non-PCI flags cleared by the above call. */ + list[i].eth_dev->data->dev_flags |= restore; + rte_eth_dev_probing_finish(list[i].eth_dev); + } + mlx5_glue->free_device_list(ibv_list); + if (!n) { + DRV_LOG(WARNING, + "no Verbs device matches PCI device " PCI_PRI_FMT "," + " are kernel drivers loaded?", + pci_dev->addr.domain, pci_dev->addr.bus, + pci_dev->addr.devid, pci_dev->addr.function); + rte_errno = ENOENT; + ret = -rte_errno; + } else if (i != n) { + DRV_LOG(ERR, + "probe of PCI device " PCI_PRI_FMT " aborted after" + " encountering an error: %s", + pci_dev->addr.domain, pci_dev->addr.bus, + pci_dev->addr.devid, pci_dev->addr.function, + strerror(rte_errno)); + ret = -rte_errno; + /* Roll back. */ + while (i--) { + if (!list[i].eth_dev) + continue; + mlx5_dev_close(list[i].eth_dev); + if (rte_eal_process_type() == RTE_PROC_PRIMARY) + rte_free(list[i].eth_dev->data->dev_private); + claim_zero(rte_eth_dev_release_port(list[i].eth_dev)); + } + /* Restore original error. */ + rte_errno = -ret; + } else { + ret = 0; + } + return ret; } static const struct rte_pci_id mlx5_pci_id_map[] = { @@ -1036,6 +1483,10 @@ static const struct rte_pci_id mlx5_pci_id_map[] = { PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF) }, { + RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, + PCI_DEVICE_ID_MELLANOX_CONNECTX5BF) + }, + { .vendor_id = 0 } }; @@ -1052,11 +1503,54 @@ static struct rte_pci_driver mlx5_driver = { #ifdef RTE_LIBRTE_MLX5_DLOPEN_DEPS /** + * Suffix RTE_EAL_PMD_PATH with "-glue". + * + * This function performs a sanity check on RTE_EAL_PMD_PATH before + * suffixing its last component. + * + * @param buf[out] + * Output buffer, should be large enough otherwise NULL is returned. + * @param size + * Size of @p out. + * + * @return + * Pointer to @p buf or @p NULL in case suffix cannot be appended. + */ +static char * +mlx5_glue_path(char *buf, size_t size) +{ + static const char *const bad[] = { "/", ".", "..", NULL }; + const char *path = RTE_EAL_PMD_PATH; + size_t len = strlen(path); + size_t off; + int i; + + while (len && path[len - 1] == '/') + --len; + for (off = len; off && path[off - 1] != '/'; --off) + ; + for (i = 0; bad[i]; ++i) + if (!strncmp(path + off, bad[i], (int)(len - off))) + goto error; + i = snprintf(buf, size, "%.*s-glue", (int)len, path); + if (i == -1 || (size_t)i >= size) + goto error; + return buf; +error: + DRV_LOG(ERR, + "unable to append \"-glue\" to last component of" + " RTE_EAL_PMD_PATH (\"" RTE_EAL_PMD_PATH "\")," + " please re-configure DPDK"); + return NULL; +} + +/** * Initialization routine for run-time dependency on rdma-core. */ static int mlx5_glue_init(void) { + char glue_path[sizeof(RTE_EAL_PMD_PATH) - 1 + sizeof("-glue")]; const char *path[] = { /* * A basic security check is necessary before trusting @@ -1064,7 +1558,13 @@ mlx5_glue_init(void) */ (geteuid() == getuid() && getegid() == getgid() ? getenv("MLX5_GLUE_PATH") : NULL), - RTE_EAL_PMD_PATH, + /* + * When RTE_EAL_PMD_PATH is set, use its glue-suffixed + * variant, otherwise let dlopen() look up libraries on its + * own. + */ + (*RTE_EAL_PMD_PATH ? + mlx5_glue_path(glue_path, sizeof(glue_path)) : ""), }; unsigned int i = 0; void *handle = NULL; @@ -1095,7 +1595,8 @@ mlx5_glue_init(void) break; if (sizeof(name) != (size_t)ret + 1) continue; - DEBUG("looking for rdma-core glue as \"%s\"", name); + DRV_LOG(DEBUG, "looking for rdma-core glue as \"%s\"", + name); handle = dlopen(name, RTLD_LAZY); break; } while (1); @@ -1107,7 +1608,7 @@ mlx5_glue_init(void) rte_errno = EINVAL; dlmsg = dlerror(); if (dlmsg) - WARN("cannot load glue library: %s", dlmsg); + DRV_LOG(WARNING, "cannot load glue library: %s", dlmsg); goto glue_error; } sym = dlsym(handle, "mlx5_glue"); @@ -1115,7 +1616,7 @@ mlx5_glue_init(void) rte_errno = EINVAL; dlmsg = dlerror(); if (dlmsg) - ERROR("cannot resolve glue symbol: %s", dlmsg); + DRV_LOG(ERR, "cannot resolve glue symbol: %s", dlmsg); goto glue_error; } mlx5_glue = *sym; @@ -1123,9 +1624,9 @@ mlx5_glue_init(void) glue_error: if (handle) dlclose(handle); - WARN("cannot initialize PMD due to missing run-time" - " dependency on rdma-core libraries (libibverbs," - " libmlx5)"); + DRV_LOG(WARNING, + "cannot initialize PMD due to missing run-time dependency on" + " rdma-core libraries (libibverbs, libmlx5)"); return -rte_errno; } @@ -1134,12 +1635,17 @@ glue_error: /** * Driver initialization routine. */ -RTE_INIT(rte_mlx5_pmd_init); -static void -rte_mlx5_pmd_init(void) +RTE_INIT(rte_mlx5_pmd_init) { - /* Build the static table for ptype conversion. */ + /* Initialize driver log type. */ + mlx5_logtype = rte_log_register("pmd.net.mlx5"); + if (mlx5_logtype >= 0) + rte_log_set_level(mlx5_logtype, RTE_LOG_NOTICE); + + /* Build the static tables for Verbs conversion. */ mlx5_set_ptype_table(); + mlx5_set_cksum_table(); + mlx5_set_swp_types_table(); /* * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use * huge pages. Calling ibv_fork_init() during init allows @@ -1150,6 +1656,11 @@ rte_mlx5_pmd_init(void) /* Match the size of Rx completion entry to the size of a cacheline. */ if (RTE_CACHE_LINE_SIZE == 128) setenv("MLX5_CQE_SIZE", "128", 0); + /* + * MLX5_DEVICE_FATAL_CLEANUP tells ibv_destroy functions to + * cleanup all the Verbs resources even when the device was removed. + */ + setenv("MLX5_DEVICE_FATAL_CLEANUP", "1", 1); #ifdef RTE_LIBRTE_MLX5_DLOPEN_DEPS if (mlx5_glue_init()) return; @@ -1165,8 +1676,9 @@ rte_mlx5_pmd_init(void) } #endif if (strcmp(mlx5_glue->version, MLX5_GLUE_VERSION)) { - ERROR("rdma-core glue \"%s\" mismatch: \"%s\" is required", - mlx5_glue->version, MLX5_GLUE_VERSION); + DRV_LOG(ERR, + "rdma-core glue \"%s\" mismatch: \"%s\" is required", + mlx5_glue->version, MLX5_GLUE_VERSION); return; } mlx5_glue->fork_init(); |