diff options
Diffstat (limited to 'examples/vdpa')
| -rw-r--r-- | examples/vdpa/Makefile | 32 | ||||
| -rw-r--r-- | examples/vdpa/main.c | 454 | ||||
| -rw-r--r-- | examples/vdpa/meson.build | 16 |
3 files changed, 502 insertions, 0 deletions
diff --git a/examples/vdpa/Makefile b/examples/vdpa/Makefile new file mode 100644 index 00000000..42672a2b --- /dev/null +++ b/examples/vdpa/Makefile @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright(c) 2018 Intel Corporation + +ifeq ($(RTE_SDK),) +$(error "Please define RTE_SDK environment variable") +endif + +# Default target, can be overridden by command line or environment +RTE_TARGET ?= x86_64-native-linuxapp-gcc + +include $(RTE_SDK)/mk/rte.vars.mk + +ifneq ($(CONFIG_RTE_EXEC_ENV),"linuxapp") +$(info This application can only operate in a linuxapp environment, \ +please change the definition of the RTE_TARGET environment variable) +all: +else + +# binary name +APP = vdpa + +# all source are stored in SRCS-y +SRCS-y := main.c + +CFLAGS += -O2 -D_FILE_OFFSET_BITS=64 +CFLAGS += $(WERROR_FLAGS) +CFLAGS += -D_GNU_SOURCE +CFLAGS += -DALLOW_EXPERIMENTAL_API + +include $(RTE_SDK)/mk/rte.extapp.mk + +endif diff --git a/examples/vdpa/main.c b/examples/vdpa/main.c new file mode 100644 index 00000000..d2e2cb7c --- /dev/null +++ b/examples/vdpa/main.c @@ -0,0 +1,454 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Intel Corporation + */ + +#include <getopt.h> +#include <signal.h> +#include <stdint.h> +#include <string.h> +#include <unistd.h> + +#include <rte_ethdev.h> +#include <rte_malloc.h> +#include <rte_vhost.h> +#include <rte_vdpa.h> +#include <rte_pci.h> +#include <rte_string_fns.h> + +#include <cmdline_parse.h> +#include <cmdline_socket.h> +#include <cmdline_parse_string.h> +#include <cmdline.h> + +#define MAX_PATH_LEN 128 +#define MAX_VDPA_SAMPLE_PORTS 1024 +#define RTE_LOGTYPE_VDPA RTE_LOGTYPE_USER1 + +struct vdpa_port { + char ifname[MAX_PATH_LEN]; + int did; + int vid; + uint64_t flags; +}; + +static struct vdpa_port vports[MAX_VDPA_SAMPLE_PORTS]; + +static char iface[MAX_PATH_LEN]; +static int dev_total; +static int devcnt; +static int interactive; +static int client_mode; + +/* display usage */ +static void +vdpa_usage(const char *prgname) +{ + printf("Usage: %s [EAL options] -- " + " --interactive|-i: run in interactive mode.\n" + " --iface <path>: specify the path prefix of the socket files, e.g. /tmp/vhost-user-.\n" + " --client: register a vhost-user socket as client mode.\n", + prgname); +} + +static int +parse_args(int argc, char **argv) +{ + static const char *short_option = "i"; + static struct option long_option[] = { + {"iface", required_argument, NULL, 0}, + {"interactive", no_argument, &interactive, 1}, + {"client", no_argument, &client_mode, 1}, + {NULL, 0, 0, 0}, + }; + int opt, idx; + char *prgname = argv[0]; + + while ((opt = getopt_long(argc, argv, short_option, long_option, &idx)) + != EOF) { + switch (opt) { + case 'i': + printf("Interactive-mode selected\n"); + interactive = 1; + break; + /* long options */ + case 0: + if (strncmp(long_option[idx].name, "iface", + MAX_PATH_LEN) == 0) { + rte_strscpy(iface, optarg, MAX_PATH_LEN); + printf("iface %s\n", iface); + } + if (!strcmp(long_option[idx].name, "interactive")) { + printf("Interactive-mode selected\n"); + interactive = 1; + } + break; + + default: + vdpa_usage(prgname); + return -1; + } + } + + if (iface[0] == '\0' && interactive == 0) { + vdpa_usage(prgname); + return -1; + } + + return 0; +} + +static int +new_device(int vid) +{ + char ifname[MAX_PATH_LEN]; + int i; + + rte_vhost_get_ifname(vid, ifname, sizeof(ifname)); + for (i = 0; i < MAX_VDPA_SAMPLE_PORTS; i++) { + if (strncmp(ifname, vports[i].ifname, MAX_PATH_LEN) == 0) { + printf("\nnew port %s, did: %d\n", + ifname, vports[i].did); + vports[i].vid = vid; + break; + } + } + + if (i >= MAX_VDPA_SAMPLE_PORTS) + return -1; + + return 0; +} + +static void +destroy_device(int vid) +{ + char ifname[MAX_PATH_LEN]; + int i; + + rte_vhost_get_ifname(vid, ifname, sizeof(ifname)); + for (i = 0; i < MAX_VDPA_SAMPLE_PORTS; i++) { + if (strcmp(ifname, vports[i].ifname) == 0) { + printf("\ndestroy port %s, did: %d\n", + ifname, vports[i].did); + break; + } + } +} + +static const struct vhost_device_ops vdpa_sample_devops = { + .new_device = new_device, + .destroy_device = destroy_device, +}; + +static int +start_vdpa(struct vdpa_port *vport) +{ + int ret; + char *socket_path = vport->ifname; + int did = vport->did; + + if (client_mode) + vport->flags |= RTE_VHOST_USER_CLIENT; + + if (access(socket_path, F_OK) != -1 && !client_mode) { + RTE_LOG(ERR, VDPA, + "%s exists, please remove it or specify another file and try again.\n", + socket_path); + return -1; + } + ret = rte_vhost_driver_register(socket_path, vport->flags); + if (ret != 0) + rte_exit(EXIT_FAILURE, + "register driver failed: %s\n", + socket_path); + + ret = rte_vhost_driver_callback_register(socket_path, + &vdpa_sample_devops); + if (ret != 0) + rte_exit(EXIT_FAILURE, + "register driver ops failed: %s\n", + socket_path); + + ret = rte_vhost_driver_attach_vdpa_device(socket_path, did); + if (ret != 0) + rte_exit(EXIT_FAILURE, + "attach vdpa device failed: %s\n", + socket_path); + + if (rte_vhost_driver_start(socket_path) < 0) + rte_exit(EXIT_FAILURE, + "start vhost driver failed: %s\n", + socket_path); + return 0; +} + +static void +close_vdpa(struct vdpa_port *vport) +{ + int ret; + char *socket_path = vport->ifname; + + ret = rte_vhost_driver_detach_vdpa_device(socket_path); + if (ret != 0) + RTE_LOG(ERR, VDPA, + "detach vdpa device failed: %s\n", + socket_path); + + ret = rte_vhost_driver_unregister(socket_path); + if (ret != 0) + RTE_LOG(ERR, VDPA, + "Fail to unregister vhost driver for %s.\n", + socket_path); +} + +static void +vdpa_sample_quit(void) +{ + int i; + for (i = 0; i < RTE_MIN(MAX_VDPA_SAMPLE_PORTS, dev_total); i++) { + if (vports[i].ifname[0] != '\0') + close_vdpa(&vports[i]); + } +} + +static void +signal_handler(int signum) +{ + if (signum == SIGINT || signum == SIGTERM) { + printf("\nSignal %d received, preparing to exit...\n", signum); + vdpa_sample_quit(); + exit(0); + } +} + +/* interactive cmds */ + +/* *** Help command with introduction. *** */ +struct cmd_help_result { + cmdline_fixed_string_t help; +}; + +static void cmd_help_parsed(__attribute__((unused)) void *parsed_result, + struct cmdline *cl, + __attribute__((unused)) void *data) +{ + cmdline_printf( + cl, + "\n" + "The following commands are currently available:\n\n" + "Control:\n" + " help : Show interactive instructions.\n" + " list : list all available vdpa devices.\n" + " create <socket file> <vdev addr> : create a new vdpa port.\n" + " quit : exit vdpa sample app.\n" + ); +} + +cmdline_parse_token_string_t cmd_help_help = + TOKEN_STRING_INITIALIZER(struct cmd_help_result, help, "help"); + +cmdline_parse_inst_t cmd_help = { + .f = cmd_help_parsed, + .data = NULL, + .help_str = "show help", + .tokens = { + (void *)&cmd_help_help, + NULL, + }, +}; + +/* *** List all available vdpa devices *** */ +struct cmd_list_result { + cmdline_fixed_string_t action; +}; + +static void cmd_list_vdpa_devices_parsed( + __attribute__((unused)) void *parsed_result, + struct cmdline *cl, + __attribute__((unused)) void *data) +{ + int did; + uint32_t queue_num; + uint64_t features; + struct rte_vdpa_device *vdev; + struct rte_pci_addr addr; + + cmdline_printf(cl, "device id\tdevice address\tqueue num\tsupported features\n"); + for (did = 0; did < dev_total; did++) { + vdev = rte_vdpa_get_device(did); + if (!vdev) + continue; + if (vdev->ops->get_queue_num(did, &queue_num) < 0) { + RTE_LOG(ERR, VDPA, + "failed to get vdpa queue number " + "for device id %d.\n", did); + continue; + } + if (vdev->ops->get_features(did, &features) < 0) { + RTE_LOG(ERR, VDPA, + "failed to get vdpa features " + "for device id %d.\n", did); + continue; + } + addr = vdev->addr.pci_addr; + cmdline_printf(cl, + "%d\t\t" PCI_PRI_FMT "\t%" PRIu32 "\t\t0x%" PRIx64 "\n", + did, addr.domain, addr.bus, addr.devid, + addr.function, queue_num, features); + } +} + +cmdline_parse_token_string_t cmd_action_list = + TOKEN_STRING_INITIALIZER(struct cmd_list_result, action, "list"); + +cmdline_parse_inst_t cmd_list_vdpa_devices = { + .f = cmd_list_vdpa_devices_parsed, + .data = NULL, + .help_str = "list all available vdpa devices", + .tokens = { + (void *)&cmd_action_list, + NULL, + }, +}; + +/* *** Create new vdpa port *** */ +struct cmd_create_result { + cmdline_fixed_string_t action; + cmdline_fixed_string_t socket_path; + cmdline_fixed_string_t bdf; +}; + +static void cmd_create_vdpa_port_parsed(void *parsed_result, + struct cmdline *cl, + __attribute__((unused)) void *data) +{ + int did; + struct cmd_create_result *res = parsed_result; + struct rte_vdpa_dev_addr addr; + + rte_strscpy(vports[devcnt].ifname, res->socket_path, MAX_PATH_LEN); + if (rte_pci_addr_parse(res->bdf, &addr.pci_addr) != 0) { + cmdline_printf(cl, "Unable to parse the given bdf.\n"); + return; + } + addr.type = PCI_ADDR; + did = rte_vdpa_find_device_id(&addr); + if (did < 0) { + cmdline_printf(cl, "Unable to find vdpa device id.\n"); + return; + } + + vports[devcnt].did = did; + + if (start_vdpa(&vports[devcnt]) == 0) + devcnt++; +} + +cmdline_parse_token_string_t cmd_action_create = + TOKEN_STRING_INITIALIZER(struct cmd_create_result, action, "create"); +cmdline_parse_token_string_t cmd_socket_path = + TOKEN_STRING_INITIALIZER(struct cmd_create_result, socket_path, NULL); +cmdline_parse_token_string_t cmd_bdf = + TOKEN_STRING_INITIALIZER(struct cmd_create_result, bdf, NULL); + +cmdline_parse_inst_t cmd_create_vdpa_port = { + .f = cmd_create_vdpa_port_parsed, + .data = NULL, + .help_str = "create a new vdpa port", + .tokens = { + (void *)&cmd_action_create, + (void *)&cmd_socket_path, + (void *)&cmd_bdf, + NULL, + }, +}; + +/* *** QUIT *** */ +struct cmd_quit_result { + cmdline_fixed_string_t quit; +}; + +static void cmd_quit_parsed(__attribute__((unused)) void *parsed_result, + struct cmdline *cl, + __attribute__((unused)) void *data) +{ + vdpa_sample_quit(); + cmdline_quit(cl); +} + +cmdline_parse_token_string_t cmd_quit_quit = + TOKEN_STRING_INITIALIZER(struct cmd_quit_result, quit, "quit"); + +cmdline_parse_inst_t cmd_quit = { + .f = cmd_quit_parsed, + .data = NULL, + .help_str = "quit: exit application", + .tokens = { + (void *)&cmd_quit_quit, + NULL, + }, +}; +cmdline_parse_ctx_t main_ctx[] = { + (cmdline_parse_inst_t *)&cmd_help, + (cmdline_parse_inst_t *)&cmd_list_vdpa_devices, + (cmdline_parse_inst_t *)&cmd_create_vdpa_port, + (cmdline_parse_inst_t *)&cmd_quit, + NULL, +}; + +int +main(int argc, char *argv[]) +{ + char ch; + int i; + int ret; + struct cmdline *cl; + + ret = rte_eal_init(argc, argv); + if (ret < 0) + rte_exit(EXIT_FAILURE, "eal init failed\n"); + argc -= ret; + argv += ret; + + dev_total = rte_vdpa_get_device_num(); + if (dev_total <= 0) + rte_exit(EXIT_FAILURE, "No available vdpa device found\n"); + + signal(SIGINT, signal_handler); + signal(SIGTERM, signal_handler); + + ret = parse_args(argc, argv); + if (ret < 0) + rte_exit(EXIT_FAILURE, "invalid argument\n"); + + if (interactive == 1) { + cl = cmdline_stdin_new(main_ctx, "vdpa> "); + if (cl == NULL) + rte_panic("Cannot create cmdline instance\n"); + cmdline_interact(cl); + cmdline_stdin_exit(cl); + } else { + for (i = 0; i < RTE_MIN(MAX_VDPA_SAMPLE_PORTS, dev_total); + i++) { + vports[i].did = i; + snprintf(vports[i].ifname, MAX_PATH_LEN, "%s%d", + iface, i); + + start_vdpa(&vports[i]); + } + + printf("enter \'q\' to quit\n"); + while (scanf("%c", &ch)) { + if (ch == 'q') + break; + while (ch != '\n') { + if (scanf("%c", &ch)) + printf("%c", ch); + } + printf("enter \'q\' to quit\n"); + } + vdpa_sample_quit(); + } + + return 0; +} diff --git a/examples/vdpa/meson.build b/examples/vdpa/meson.build new file mode 100644 index 00000000..2e38a069 --- /dev/null +++ b/examples/vdpa/meson.build @@ -0,0 +1,16 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright(c) 2018 Intel Corporation + +# meson file, for building this example as part of a main DPDK build. +# +# To build this example as a standalone application with an already-installed +# DPDK instance, use 'make' + +if host_machine.system() != 'linux' + build = false +endif +deps += 'vhost' +allow_experimental_apis = true +sources = files( + 'main.c' +)
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