From cfc672a90b746013e73fae5f7c6593e38deae2f8 Mon Sep 17 00:00:00 2001 From: Ori Kam Date: Mon, 20 Jul 2020 06:26:07 +0000 Subject: [PATCH] regex/mlx5: support probing This commit adds the probe function to the RegEx PMD. Signed-off-by: Parav Pandit Signed-off-by: Ori Kam --- drivers/common/mlx5/mlx5_devx_cmds.c | 3 + drivers/common/mlx5/mlx5_devx_cmds.h | 2 + drivers/common/mlx5/mlx5_prm.h | 9 +- drivers/regex/mlx5/Makefile | 2 + drivers/regex/mlx5/mlx5_regex.c | 167 +++++++++++++++++++++++++++ drivers/regex/mlx5/mlx5_regex.h | 6 + mk/rte.app.mk | 1 + 7 files changed, 188 insertions(+), 2 deletions(-) diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c index 2179a83983..54b20a7a36 100644 --- a/drivers/common/mlx5/mlx5_devx_cmds.c +++ b/drivers/common/mlx5/mlx5_devx_cmds.c @@ -467,6 +467,9 @@ mlx5_devx_cmd_query_hca_attr(void *ctx, attr->vdpa.queue_counters_valid = !!(MLX5_GET64(cmd_hca_cap, hcattr, general_obj_types) & MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_Q_COUNTERS); + attr->regex = MLX5_GET(cmd_hca_cap, hcattr, regexp); + attr->regexp_num_of_engines = MLX5_GET(cmd_hca_cap, hcattr, + regexp_num_of_engines); if (attr->qos.sup) { MLX5_SET(query_hca_cap_in, in, op_mod, MLX5_GET_HCA_CAP_OP_MOD_QOS_CAP | diff --git a/drivers/common/mlx5/mlx5_devx_cmds.h b/drivers/common/mlx5/mlx5_devx_cmds.h index 25704efc1f..bb14ca5850 100644 --- a/drivers/common/mlx5/mlx5_devx_cmds.h +++ b/drivers/common/mlx5/mlx5_devx_cmds.h @@ -90,6 +90,8 @@ struct mlx5_hca_attr { uint32_t vhca_id:16; uint32_t relaxed_ordering_write:1; uint32_t relaxed_ordering_read:1; + uint32_t regex:1; + uint32_t regexp_num_of_engines; struct mlx5_hca_qos_attr qos; struct mlx5_hca_vdpa_attr vdpa; }; diff --git a/drivers/common/mlx5/mlx5_prm.h b/drivers/common/mlx5/mlx5_prm.h index c63795fc84..a24a10d0d9 100644 --- a/drivers/common/mlx5/mlx5_prm.h +++ b/drivers/common/mlx5/mlx5_prm.h @@ -994,9 +994,14 @@ struct mlx5_ifc_cmd_hca_cap_bits { u8 log_max_qp_sz[0x8]; u8 reserved_at_90[0xb]; u8 log_max_qp[0x5]; - u8 reserved_at_a0[0xb]; + u8 regexp[0x1]; + u8 reserved_at_a1[0x3]; + u8 regexp_num_of_engines[0x4]; + u8 reserved_at_a8[0x3]; u8 log_max_srq[0x5]; - u8 reserved_at_b0[0x10]; + u8 reserved_at_b0[0x3]; + u8 regexp_log_crspace_size[0x5]; + u8 reserved_at_b8[0x8]; u8 reserved_at_c0[0x8]; u8 log_max_cq_sz[0x8]; u8 reserved_at_d0[0xb]; diff --git a/drivers/regex/mlx5/Makefile b/drivers/regex/mlx5/Makefile index fa32cda5bf..c5978b566f 100644 --- a/drivers/regex/mlx5/Makefile +++ b/drivers/regex/mlx5/Makefile @@ -16,6 +16,7 @@ CFLAGS += -g CFLAGS += -I$(RTE_SDK)/drivers/common/mlx5 CFLAGS += -I$(BUILDDIR)/drivers/common/mlx5 CFLAGS += -I$(RTE_SDK)/drivers/common/mlx5/linux +CFLAGS += -I$(BUILDDIR)/drivers/common/mlx5/linux CFLAGS += -D_BSD_SOURCE CFLAGS += -D_DEFAULT_SOURCE CFLAGS += -D_XOPEN_SOURCE=600 @@ -26,6 +27,7 @@ LDLIBS += -lm LDLIBS += -lrte_eal -lrte_mbuf -lrte_regexdev LDLIBS += -lrte_kvargs LDLIBS += -lrte_bus_pci +LDLIBS += -lrte_pci # A few warnings cannot be avoided in external headers. CFLAGS += -Wno-error=cast-qual diff --git a/drivers/regex/mlx5/mlx5_regex.c b/drivers/regex/mlx5/mlx5_regex.c index 922c23630f..5c0b2c48ae 100644 --- a/drivers/regex/mlx5/mlx5_regex.c +++ b/drivers/regex/mlx5/mlx5_regex.c @@ -2,9 +2,176 @@ * Copyright 2020 Mellanox Technologies, Ltd */ +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + #include "mlx5_regex.h" #include "mlx5_regex_utils.h" int mlx5_regex_logtype; +static const struct rte_regexdev_ops mlx5_regexdev_ops = {0}; + +static struct ibv_device * +mlx5_regex_get_ib_device_match(struct rte_pci_addr *addr) +{ + int n; + struct ibv_device **ibv_list = mlx5_glue->get_device_list(&n); + struct ibv_device *ibv_match = NULL; + + if (!ibv_list) { + rte_errno = ENOSYS; + return NULL; + } + while (n-- > 0) { + struct rte_pci_addr pci_addr; + + DRV_LOG(DEBUG, "Checking device \"%s\"..", ibv_list[n]->name); + if (mlx5_dev_to_pci_addr(ibv_list[n]->ibdev_path, &pci_addr)) + continue; + if (rte_pci_addr_cmp(addr, &pci_addr)) + continue; + ibv_match = ibv_list[n]; + break; + } + if (!ibv_match) + rte_errno = ENOENT; + mlx5_glue->free_device_list(ibv_list); + return ibv_match; +} + +static void +mlx5_regex_get_name(char *name, struct rte_pci_device *pci_dev __rte_unused) +{ + sprintf(name, "mlx5_regex_%02x:%02x.%02x", pci_dev->addr.bus, + pci_dev->addr.devid, pci_dev->addr.function); +} + +static int +mlx5_regex_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, + struct rte_pci_device *pci_dev) +{ + struct ibv_device *ibv; + struct mlx5_regex_priv *priv = NULL; + struct ibv_context *ctx = NULL; + struct mlx5_hca_attr attr; + char name[RTE_REGEXDEV_NAME_MAX_LEN]; + int ret; + + ibv = mlx5_regex_get_ib_device_match(&pci_dev->addr); + if (!ibv) { + DRV_LOG(ERR, "No matching IB device for PCI slot " + PCI_PRI_FMT ".", pci_dev->addr.domain, + pci_dev->addr.bus, pci_dev->addr.devid, + pci_dev->addr.function); + return -rte_errno; + } + DRV_LOG(INFO, "PCI information matches for device \"%s\".", + ibv->name); + ctx = mlx5_glue->dv_open_device(ibv); + if (!ctx) { + DRV_LOG(ERR, "Failed to open IB device \"%s\".", ibv->name); + rte_errno = ENODEV; + return -rte_errno; + } + ret = mlx5_devx_cmd_query_hca_attr(ctx, &attr); + if (ret) { + DRV_LOG(ERR, "Unable to read HCA capabilities."); + rte_errno = ENOTSUP; + goto error; + } else if (!attr.regex || attr.regexp_num_of_engines == 0) { + DRV_LOG(ERR, "Not enough capabilities to support RegEx, maybe " + "old FW/OFED version?"); + rte_errno = ENOTSUP; + goto error; + } + priv = rte_zmalloc("mlx5 regex device private", sizeof(*priv), + RTE_CACHE_LINE_SIZE); + if (!priv) { + DRV_LOG(ERR, "Failed to allocate private memory."); + rte_errno = ENOMEM; + goto error; + } + priv->ctx = ctx; + mlx5_regex_get_name(name, pci_dev); + priv->regexdev = rte_regexdev_register(name); + if (priv->regexdev == NULL) { + DRV_LOG(ERR, "Failed to register RegEx device."); + rte_errno = rte_errno ? rte_errno : EINVAL; + goto error; + } + priv->regexdev->dev_ops = &mlx5_regexdev_ops; + priv->regexdev->device = (struct rte_device *)pci_dev; + priv->regexdev->data->dev_private = priv; + return 0; + +error: + if (ctx) + mlx5_glue->close_device(ctx); + if (priv) + rte_free(priv); + return -rte_errno; +} + +static int +mlx5_regex_pci_remove(struct rte_pci_device *pci_dev) +{ + char name[RTE_REGEXDEV_NAME_MAX_LEN]; + struct rte_regexdev *dev; + struct mlx5_regex_priv *priv = NULL; + + mlx5_regex_get_name(name, pci_dev); + dev = rte_regexdev_get_device_by_name(name); + if (!dev) + return 0; + priv = dev->data->dev_private; + if (priv) { + if (priv->ctx) + mlx5_glue->close_device(priv->ctx); + if (priv->regexdev) + rte_regexdev_unregister(priv->regexdev); + rte_free(priv); + } + return 0; +} + +static const struct rte_pci_id mlx5_regex_pci_id_map[] = { + { + RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, + PCI_DEVICE_ID_MELLANOX_CONNECTX6DXBF) + }, + { + .vendor_id = 0 + } +}; + +static struct rte_pci_driver mlx5_regex_driver = { + .driver = { + .name = "mlx5_regex", + }, + .id_table = mlx5_regex_pci_id_map, + .probe = mlx5_regex_pci_probe, + .remove = mlx5_regex_pci_remove, + .drv_flags = 0, +}; + +RTE_INIT(rte_mlx5_regex_init) +{ + if (mlx5_glue) + rte_pci_register(&mlx5_regex_driver); +} + RTE_LOG_REGISTER(mlx5_regex_logtype, pmd.regex.mlx5, NOTICE) +RTE_PMD_EXPORT_NAME(net_mlx5_regex, __COUNTER__); +RTE_PMD_REGISTER_PCI_TABLE(net_mlx5_regex, mlx5_regex_pci_id_map); +RTE_PMD_REGISTER_KMOD_DEP(net_mlx5_regex, "* ib_uverbs & mlx5_core & mlx5_ib"); diff --git a/drivers/regex/mlx5/mlx5_regex.h b/drivers/regex/mlx5/mlx5_regex.h index 0e0495c263..0ce1e4df36 100644 --- a/drivers/regex/mlx5/mlx5_regex.h +++ b/drivers/regex/mlx5/mlx5_regex.h @@ -5,4 +5,10 @@ #ifndef MLX5_REGEX_H #define MLX5_REGEX_H +struct mlx5_regex_priv { + TAILQ_ENTRY(mlx5_regex_priv) next; + struct ibv_context *ctx; /* Device context. */ + struct rte_pci_device *pci_dev; + struct rte_regexdev *regexdev; /* Pointer to the RegEx dev. */ +}; #endif /* MLX5_REGEX_H */ diff --git a/mk/rte.app.mk b/mk/rte.app.mk index 1b9551ecf2..a544259970 100644 --- a/mk/rte.app.mk +++ b/mk/rte.app.mk @@ -85,6 +85,7 @@ _LDLIBS-$(CONFIG_RTE_LIBRTE_BBDEV) += -lrte_bbdev _LDLIBS-$(CONFIG_RTE_LIBRTE_CRYPTODEV) += -lrte_cryptodev _LDLIBS-$(CONFIG_RTE_LIBRTE_SECURITY) += -lrte_security _LDLIBS-$(CONFIG_RTE_LIBRTE_COMPRESSDEV) += -lrte_compressdev +_LDLIBS-$(CONFIG_RTE_LIBRTE_REGEXDEV) += -lrte_regexdev _LDLIBS-$(CONFIG_RTE_LIBRTE_EVENTDEV) += -lrte_eventdev _LDLIBS-$(CONFIG_RTE_LIBRTE_RAWDEV) += -lrte_rawdev _LDLIBS-$(CONFIG_RTE_LIBRTE_TIMER) += -lrte_timer