From: Ophir Munk Date: Mon, 1 Jun 2020 05:50:47 +0000 (+0000) Subject: common/mlx5: split common file under Linux directory X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=79aa430721b1;p=dpdk.git common/mlx5: split common file under Linux directory File mlx5_common.c includes both specific and non-specific Linux APIs. Move the Linux specific APIS into a new file named linux/mlx5_common_os.c. Signed-off-by: Ophir Munk Acked-by: Matan Azrad --- diff --git a/drivers/common/mlx5/Makefile b/drivers/common/mlx5/Makefile index 40bf2a51e5..e9863b5fdb 100644 --- a/drivers/common/mlx5/Makefile +++ b/drivers/common/mlx5/Makefile @@ -16,6 +16,7 @@ SRCS-y += linux/mlx5_glue.c endif SRCS-y += mlx5_devx_cmds.c SRCS-y += mlx5_common.c +SRCS-y += linux/mlx5_common_os.c SRCS-y += linux/mlx5_nl.c SRCS-y += mlx5_common_mp.c SRCS-y += mlx5_common_mr.c diff --git a/drivers/common/mlx5/linux/meson.build b/drivers/common/mlx5/linux/meson.build index 04f7e03d16..f0016fa6a7 100644 --- a/drivers/common/mlx5/linux/meson.build +++ b/drivers/common/mlx5/linux/meson.build @@ -46,6 +46,7 @@ if static_ibverbs endif sources += files('mlx5_nl.c') +sources += files('mlx5_common_os.c') if not dlopen_ibverbs sources += files('mlx5_glue.c') endif diff --git a/drivers/common/mlx5/linux/mlx5_common_os.c b/drivers/common/mlx5/linux/mlx5_common_os.c new file mode 100644 index 0000000000..4e04d705ac --- /dev/null +++ b/drivers/common/mlx5/linux/mlx5_common_os.c @@ -0,0 +1,305 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2020 Mellanox Technologies, Ltd + */ + +#include +#include +#include +#ifdef RTE_IBVERBS_LINK_DLOPEN +#include +#endif + +#include + +#include "mlx5_common.h" +#include "mlx5_common_utils.h" +#include "mlx5_glue.h" + +#ifdef MLX5_GLUE +const struct mlx5_glue *mlx5_glue; +#endif + +/** + * Get PCI information by sysfs device path. + * + * @param dev_path + * Pointer to device sysfs folder name. + * @param[out] pci_addr + * PCI bus address output buffer. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_dev_to_pci_addr(const char *dev_path, + struct rte_pci_addr *pci_addr) +{ + FILE *file; + char line[32]; + MKSTR(path, "%s/device/uevent", dev_path); + + file = fopen(path, "rb"); + if (file == NULL) { + rte_errno = errno; + return -rte_errno; + } + while (fgets(line, sizeof(line), file) == line) { + size_t len = strlen(line); + int ret; + + /* Truncate long lines. */ + if (len == (sizeof(line) - 1)) + while (line[(len - 1)] != '\n') { + ret = fgetc(file); + if (ret == EOF) + break; + line[(len - 1)] = ret; + } + /* Extract information. */ + if (sscanf(line, + "PCI_SLOT_NAME=" + "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", + &pci_addr->domain, + &pci_addr->bus, + &pci_addr->devid, + &pci_addr->function) == 4) { + ret = 0; + break; + } + } + fclose(file); + return 0; +} + +/** + * Extract port name, as a number, from sysfs or netlink information. + * + * @param[in] port_name_in + * String representing the port name. + * @param[out] port_info_out + * Port information, including port name as a number and port name + * type if recognized + * + * @return + * port_name field set according to recognized name format. + */ +void +mlx5_translate_port_name(const char *port_name_in, + struct mlx5_switch_info *port_info_out) +{ + char pf_c1, pf_c2, vf_c1, vf_c2; + char *end; + int sc_items; + + /* + * Check for port-name as a string of the form pf0vf0 + * (support kernel ver >= 5.0 or OFED ver >= 4.6). + */ + sc_items = sscanf(port_name_in, "%c%c%d%c%c%d", + &pf_c1, &pf_c2, &port_info_out->pf_num, + &vf_c1, &vf_c2, &port_info_out->port_name); + if (sc_items == 6 && + pf_c1 == 'p' && pf_c2 == 'f' && + vf_c1 == 'v' && vf_c2 == 'f') { + port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF; + return; + } + /* + * Check for port-name as a string of the form p0 + * (support kernel ver >= 5.0, or OFED ver >= 4.6). + */ + sc_items = sscanf(port_name_in, "%c%d", + &pf_c1, &port_info_out->port_name); + if (sc_items == 2 && pf_c1 == 'p') { + port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK; + return; + } + /* Check for port-name as a number (support kernel ver < 5.0 */ + errno = 0; + port_info_out->port_name = strtol(port_name_in, &end, 0); + if (!errno && + (size_t)(end - port_name_in) == strlen(port_name_in)) { + port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY; + return; + } + port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN; +} + +#ifdef MLX5_GLUE + +/** + * 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: + RTE_LOG(ERR, PMD, "unable to append \"-glue\" to last component of" + " RTE_EAL_PMD_PATH (\"" RTE_EAL_PMD_PATH "\"), please" + " re-configure DPDK"); + return NULL; +} + +static int +mlx5_glue_dlopen(void) +{ + char glue_path[sizeof(RTE_EAL_PMD_PATH) - 1 + sizeof("-glue")]; + void *handle = NULL; + + char const *path[] = { + /* + * A basic security check is necessary before trusting + * MLX5_GLUE_PATH, which may override RTE_EAL_PMD_PATH. + */ + (geteuid() == getuid() && getegid() == getgid() ? + getenv("MLX5_GLUE_PATH") : NULL), + /* + * 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 **sym; + const char *dlmsg; + + while (!handle && i != RTE_DIM(path)) { + const char *end; + size_t len; + int ret; + + if (!path[i]) { + ++i; + continue; + } + end = strpbrk(path[i], ":;"); + if (!end) + end = path[i] + strlen(path[i]); + len = end - path[i]; + ret = 0; + do { + char name[ret + 1]; + + ret = snprintf(name, sizeof(name), "%.*s%s" MLX5_GLUE, + (int)len, path[i], + (!len || *(end - 1) == '/') ? "" : "/"); + if (ret == -1) + break; + if (sizeof(name) != (size_t)ret + 1) + continue; + DRV_LOG(DEBUG, "Looking for rdma-core glue as " + "\"%s\"", name); + handle = dlopen(name, RTLD_LAZY); + break; + } while (1); + path[i] = end + 1; + if (!*end) + ++i; + } + if (!handle) { + rte_errno = EINVAL; + dlmsg = dlerror(); + if (dlmsg) + DRV_LOG(WARNING, "Cannot load glue library: %s", dlmsg); + goto glue_error; + } + sym = dlsym(handle, "mlx5_glue"); + if (!sym || !*sym) { + rte_errno = EINVAL; + dlmsg = dlerror(); + if (dlmsg) + DRV_LOG(ERR, "Cannot resolve glue symbol: %s", dlmsg); + goto glue_error; + } + mlx5_glue = *sym; + return 0; + +glue_error: + if (handle) + dlclose(handle); + return -1; +} + +#endif + +/** + * Initialization routine for run-time dependency on rdma-core. + */ +void +mlx5_glue_constructor(void) +{ + /* + * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use + * huge pages. Calling ibv_fork_init() during init allows + * applications to use fork() safely for purposes other than + * using this PMD, which is not supported in forked processes. + */ + setenv("RDMAV_HUGEPAGES_SAFE", "1", 1); + /* 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 MLX5_GLUE + if (mlx5_glue_dlopen() != 0) + goto glue_error; +#endif + +#ifdef RTE_LIBRTE_MLX5_DEBUG + /* Glue structure must not contain any NULL pointers. */ + { + unsigned int i; + + for (i = 0; i != sizeof(*mlx5_glue) / sizeof(void *); ++i) + MLX5_ASSERT(((const void *const *)mlx5_glue)[i]); + } +#endif + if (strcmp(mlx5_glue->version, MLX5_GLUE_VERSION)) { + rte_errno = EINVAL; + DRV_LOG(ERR, "rdma-core glue \"%s\" mismatch: \"%s\" is " + "required", mlx5_glue->version, MLX5_GLUE_VERSION); + goto glue_error; + } + mlx5_glue->fork_init(); + return; + +glue_error: + DRV_LOG(WARNING, "Cannot initialize MLX5 common due to missing" + " run-time dependency on rdma-core libraries (libibverbs," + " libmlx5)"); + mlx5_glue = NULL; +} diff --git a/drivers/common/mlx5/mlx5_common.c b/drivers/common/mlx5/mlx5_common.c index 1c77763da9..db94d4aa8c 100644 --- a/drivers/common/mlx5/mlx5_common.c +++ b/drivers/common/mlx5/mlx5_common.c @@ -5,16 +5,11 @@ #include #include #include -#ifdef RTE_IBVERBS_LINK_DLOPEN -#include -#endif #include #include "mlx5_common.h" #include "mlx5_common_utils.h" -#include "mlx5_glue.h" - int mlx5_common_logtype; @@ -24,58 +19,6 @@ const struct mlx5_glue *mlx5_glue; uint8_t haswell_broadwell_cpu; -/** - * Get PCI information by sysfs device path. - * - * @param dev_path - * Pointer to device sysfs folder name. - * @param[out] pci_addr - * PCI bus address output buffer. - * - * @return - * 0 on success, a negative errno value otherwise and rte_errno is set. - */ -int -mlx5_dev_to_pci_addr(const char *dev_path, - struct rte_pci_addr *pci_addr) -{ - FILE *file; - char line[32]; - MKSTR(path, "%s/device/uevent", dev_path); - - file = fopen(path, "rb"); - if (file == NULL) { - rte_errno = errno; - return -rte_errno; - } - while (fgets(line, sizeof(line), file) == line) { - size_t len = strlen(line); - int ret; - - /* Truncate long lines. */ - if (len == (sizeof(line) - 1)) - while (line[(len - 1)] != '\n') { - ret = fgetc(file); - if (ret == EOF) - break; - line[(len - 1)] = ret; - } - /* Extract information. */ - if (sscanf(line, - "PCI_SLOT_NAME=" - "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", - &pci_addr->domain, - &pci_addr->bus, - &pci_addr->devid, - &pci_addr->function) == 4) { - ret = 0; - break; - } - } - fclose(file); - return 0; -} - static int mlx5_class_check_handler(__rte_unused const char *key, const char *value, void *opaque) @@ -112,187 +55,6 @@ mlx5_class_get(struct rte_devargs *devargs) return ret; } -/** - * Extract port name, as a number, from sysfs or netlink information. - * - * @param[in] port_name_in - * String representing the port name. - * @param[out] port_info_out - * Port information, including port name as a number and port name - * type if recognized - * - * @return - * port_name field set according to recognized name format. - */ -void -mlx5_translate_port_name(const char *port_name_in, - struct mlx5_switch_info *port_info_out) -{ - char pf_c1, pf_c2, vf_c1, vf_c2; - char *end; - int sc_items; - - /* - * Check for port-name as a string of the form pf0vf0 - * (support kernel ver >= 5.0 or OFED ver >= 4.6). - */ - sc_items = sscanf(port_name_in, "%c%c%d%c%c%d", - &pf_c1, &pf_c2, &port_info_out->pf_num, - &vf_c1, &vf_c2, &port_info_out->port_name); - if (sc_items == 6 && - pf_c1 == 'p' && pf_c2 == 'f' && - vf_c1 == 'v' && vf_c2 == 'f') { - port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF; - return; - } - /* - * Check for port-name as a string of the form p0 - * (support kernel ver >= 5.0, or OFED ver >= 4.6). - */ - sc_items = sscanf(port_name_in, "%c%d", - &pf_c1, &port_info_out->port_name); - if (sc_items == 2 && pf_c1 == 'p') { - port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK; - return; - } - /* Check for port-name as a number (support kernel ver < 5.0 */ - errno = 0; - port_info_out->port_name = strtol(port_name_in, &end, 0); - if (!errno && - (size_t)(end - port_name_in) == strlen(port_name_in)) { - port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY; - return; - } - port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN; - return; -} - -#ifdef MLX5_GLUE - -/** - * 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: - RTE_LOG(ERR, PMD, "unable to append \"-glue\" to last component of" - " RTE_EAL_PMD_PATH (\"" RTE_EAL_PMD_PATH "\"), please" - " re-configure DPDK"); - return NULL; -} - -static int -mlx5_glue_dlopen(void) -{ - char glue_path[sizeof(RTE_EAL_PMD_PATH) - 1 + sizeof("-glue")]; - void *handle = NULL; - - const char *path[] = { - /* - * A basic security check is necessary before trusting - * MLX5_GLUE_PATH, which may override RTE_EAL_PMD_PATH. - */ - (geteuid() == getuid() && getegid() == getgid() ? - getenv("MLX5_GLUE_PATH") : NULL), - /* - * 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 **sym; - const char *dlmsg; - - while (!handle && i != RTE_DIM(path)) { - const char *end; - size_t len; - int ret; - - if (!path[i]) { - ++i; - continue; - } - end = strpbrk(path[i], ":;"); - if (!end) - end = path[i] + strlen(path[i]); - len = end - path[i]; - ret = 0; - do { - char name[ret + 1]; - - ret = snprintf(name, sizeof(name), "%.*s%s" MLX5_GLUE, - (int)len, path[i], - (!len || *(end - 1) == '/') ? "" : "/"); - if (ret == -1) - break; - if (sizeof(name) != (size_t)ret + 1) - continue; - DRV_LOG(DEBUG, "Looking for rdma-core glue as " - "\"%s\"", name); - handle = dlopen(name, RTLD_LAZY); - break; - } while (1); - path[i] = end + 1; - if (!*end) - ++i; - } - if (!handle) { - rte_errno = EINVAL; - dlmsg = dlerror(); - if (dlmsg) - DRV_LOG(WARNING, "Cannot load glue library: %s", dlmsg); - goto glue_error; - } - sym = dlsym(handle, "mlx5_glue"); - if (!sym || !*sym) { - rte_errno = EINVAL; - dlmsg = dlerror(); - if (dlmsg) - DRV_LOG(ERR, "Cannot resolve glue symbol: %s", dlmsg); - goto glue_error; - } - mlx5_glue = *sym; - return 0; - -glue_error: - if (handle) - dlclose(handle); - return -1; -} - -#endif /* In case this is an x86_64 intel processor to check if * we should use relaxed ordering. @@ -325,55 +87,11 @@ RTE_INIT_PRIO(mlx5_log_init, LOG) } /** - * Initialization routine for run-time dependency on rdma-core. + * Initialization routine for run-time dependency on glue library. */ RTE_INIT_PRIO(mlx5_glue_init, CLASS) { - /* - * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use - * huge pages. Calling ibv_fork_init() during init allows - * applications to use fork() safely for purposes other than - * using this PMD, which is not supported in forked processes. - */ - setenv("RDMAV_HUGEPAGES_SAFE", "1", 1); - /* 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 MLX5_GLUE - if (mlx5_glue_dlopen() != 0) - goto glue_error; -#endif - -#ifdef RTE_LIBRTE_MLX5_DEBUG - /* Glue structure must not contain any NULL pointers. */ - { - unsigned int i; - - for (i = 0; i != sizeof(*mlx5_glue) / sizeof(void *); ++i) - MLX5_ASSERT(((const void *const *)mlx5_glue)[i]); - } -#endif - if (strcmp(mlx5_glue->version, MLX5_GLUE_VERSION)) { - rte_errno = EINVAL; - DRV_LOG(ERR, "rdma-core glue \"%s\" mismatch: \"%s\" is " - "required", mlx5_glue->version, MLX5_GLUE_VERSION); - goto glue_error; - } - mlx5_glue->fork_init(); - return; - -glue_error: - DRV_LOG(WARNING, "Cannot initialize MLX5 common due to missing" - " run-time dependency on rdma-core libraries (libibverbs," - " libmlx5)"); - mlx5_glue = NULL; - return; + mlx5_glue_constructor(); } /** diff --git a/drivers/common/mlx5/mlx5_common.h b/drivers/common/mlx5/mlx5_common.h index 8cd3ea590d..8e679c6993 100644 --- a/drivers/common/mlx5/mlx5_common.h +++ b/drivers/common/mlx5/mlx5_common.h @@ -212,6 +212,7 @@ enum mlx5_class mlx5_class_get(struct rte_devargs *devargs); __rte_internal void mlx5_translate_port_name(const char *port_name_in, struct mlx5_switch_info *port_info_out); +void mlx5_glue_constructor(void); extern uint8_t haswell_broadwell_cpu;