| /* |
| * devlink.c Devlink tool |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Authors: Jiri Pirko <jiri@mellanox.com> |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdbool.h> |
| #include <unistd.h> |
| #include <getopt.h> |
| #include <limits.h> |
| #include <errno.h> |
| #include <linux/genetlink.h> |
| #include <linux/devlink.h> |
| #include <libmnl/libmnl.h> |
| |
| #include "SNAPSHOT.h" |
| #include "list.h" |
| #include "mnlg.h" |
| |
| #define pr_err(args...) fprintf(stderr, ##args) |
| #define pr_out(args...) fprintf(stdout, ##args) |
| |
| static int _mnlg_socket_recv_run(struct mnlg_socket *nlg, |
| mnl_cb_t data_cb, void *data) |
| { |
| int err; |
| |
| err = mnlg_socket_recv_run(nlg, data_cb, data); |
| if (err < 0) { |
| pr_err("devlink answers: %s\n", strerror(errno)); |
| return -errno; |
| } |
| return 0; |
| } |
| |
| static int _mnlg_socket_sndrcv(struct mnlg_socket *nlg, |
| const struct nlmsghdr *nlh, |
| mnl_cb_t data_cb, void *data) |
| { |
| int err; |
| |
| err = mnlg_socket_send(nlg, nlh); |
| if (err < 0) { |
| pr_err("Failed to call mnlg_socket_send\n"); |
| return -errno; |
| } |
| return _mnlg_socket_recv_run(nlg, data_cb, data); |
| } |
| |
| static int _mnlg_socket_group_add(struct mnlg_socket *nlg, |
| const char *group_name) |
| { |
| int err; |
| |
| err = mnlg_socket_group_add(nlg, group_name); |
| if (err < 0) { |
| pr_err("Failed to call mnlg_socket_group_add\n"); |
| return -errno; |
| } |
| return 0; |
| } |
| |
| struct ifname_map { |
| struct list_head list; |
| char *bus_name; |
| char *dev_name; |
| uint32_t port_index; |
| char *ifname; |
| }; |
| |
| static struct ifname_map *ifname_map_alloc(const char *bus_name, |
| const char *dev_name, |
| uint32_t port_index, |
| const char *ifname) |
| { |
| struct ifname_map *ifname_map; |
| |
| ifname_map = calloc(1, sizeof(*ifname_map)); |
| if (!ifname_map) |
| return NULL; |
| ifname_map->bus_name = strdup(bus_name); |
| ifname_map->dev_name = strdup(dev_name); |
| ifname_map->port_index = port_index; |
| ifname_map->ifname = strdup(ifname); |
| if (!ifname_map->bus_name || !ifname_map->dev_name || |
| !ifname_map->ifname) { |
| free(ifname_map->ifname); |
| free(ifname_map->dev_name); |
| free(ifname_map->bus_name); |
| free(ifname_map); |
| return NULL; |
| } |
| return ifname_map; |
| } |
| |
| static void ifname_map_free(struct ifname_map *ifname_map) |
| { |
| free(ifname_map->ifname); |
| free(ifname_map->dev_name); |
| free(ifname_map->bus_name); |
| free(ifname_map); |
| } |
| |
| #define BIT(nr) (1UL << (nr)) |
| #define DL_OPT_HANDLE BIT(0) |
| #define DL_OPT_HANDLEP BIT(1) |
| #define DL_OPT_PORT_TYPE BIT(2) |
| #define DL_OPT_PORT_COUNT BIT(3) |
| |
| struct dl_opts { |
| uint32_t present; /* flags of present items */ |
| char *bus_name; |
| char *dev_name; |
| uint32_t port_index; |
| enum devlink_port_type port_type; |
| uint32_t port_count; |
| }; |
| |
| struct dl { |
| struct mnlg_socket *nlg; |
| struct list_head ifname_map_list; |
| int argc; |
| char **argv; |
| bool no_nice_names; |
| struct dl_opts opts; |
| }; |
| |
| static int dl_argc(struct dl *dl) |
| { |
| return dl->argc; |
| } |
| |
| static char *dl_argv(struct dl *dl) |
| { |
| if (dl_argc(dl) == 0) |
| return NULL; |
| return *dl->argv; |
| } |
| |
| static void dl_arg_inc(struct dl *dl) |
| { |
| if (dl_argc(dl) == 0) |
| return; |
| dl->argc--; |
| dl->argv++; |
| } |
| |
| static char *dl_argv_next(struct dl *dl) |
| { |
| char *ret; |
| |
| if (dl_argc(dl) == 0) |
| return NULL; |
| |
| ret = *dl->argv; |
| dl_arg_inc(dl); |
| return ret; |
| } |
| |
| static char *dl_argv_index(struct dl *dl, unsigned int index) |
| { |
| if (index >= dl_argc(dl)) |
| return NULL; |
| return dl->argv[index]; |
| } |
| |
| static int strcmpx(const char *str1, const char *str2) |
| { |
| if (strlen(str1) > strlen(str2)) |
| return -1; |
| return strncmp(str1, str2, strlen(str1)); |
| } |
| |
| static bool dl_argv_match(struct dl *dl, const char *pattern) |
| { |
| if (dl_argc(dl) == 0) |
| return false; |
| return strcmpx(dl_argv(dl), pattern) == 0; |
| } |
| |
| static bool dl_no_arg(struct dl *dl) |
| { |
| return dl_argc(dl) == 0; |
| } |
| |
| static int attr_cb(const struct nlattr *attr, void *data) |
| { |
| const struct nlattr **tb = data; |
| int type; |
| |
| type = mnl_attr_get_type(attr); |
| |
| if (mnl_attr_type_valid(attr, DEVLINK_ATTR_MAX) < 0) |
| return MNL_CB_ERROR; |
| |
| if (type == DEVLINK_ATTR_BUS_NAME && |
| mnl_attr_validate(attr, MNL_TYPE_NUL_STRING) < 0) |
| return MNL_CB_ERROR; |
| if (type == DEVLINK_ATTR_DEV_NAME && |
| mnl_attr_validate(attr, MNL_TYPE_NUL_STRING) < 0) |
| return MNL_CB_ERROR; |
| if (type == DEVLINK_ATTR_PORT_INDEX && |
| mnl_attr_validate(attr, MNL_TYPE_U32) < 0) |
| return MNL_CB_ERROR; |
| if (type == DEVLINK_ATTR_PORT_TYPE && |
| mnl_attr_validate(attr, MNL_TYPE_U16) < 0) |
| return MNL_CB_ERROR; |
| if (type == DEVLINK_ATTR_PORT_DESIRED_TYPE && |
| mnl_attr_validate(attr, MNL_TYPE_U16) < 0) |
| return MNL_CB_ERROR; |
| if (type == DEVLINK_ATTR_PORT_NETDEV_IFINDEX && |
| mnl_attr_validate(attr, MNL_TYPE_U32) < 0) |
| return MNL_CB_ERROR; |
| if (type == DEVLINK_ATTR_PORT_NETDEV_NAME && |
| mnl_attr_validate(attr, MNL_TYPE_NUL_STRING) < 0) |
| return MNL_CB_ERROR; |
| if (type == DEVLINK_ATTR_PORT_IBDEV_NAME && |
| mnl_attr_validate(attr, MNL_TYPE_NUL_STRING) < 0) |
| return MNL_CB_ERROR; |
| tb[type] = attr; |
| return MNL_CB_OK; |
| } |
| |
| static int ifname_map_cb(const struct nlmsghdr *nlh, void *data) |
| { |
| struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {}; |
| struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| struct dl *dl = data; |
| struct ifname_map *ifname_map; |
| const char *bus_name; |
| const char *dev_name; |
| uint32_t port_ifindex; |
| const char *port_ifname; |
| |
| mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb); |
| if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME] || |
| !tb[DEVLINK_ATTR_PORT_INDEX]) |
| return MNL_CB_ERROR; |
| |
| if (!tb[DEVLINK_ATTR_PORT_NETDEV_NAME]) |
| return MNL_CB_OK; |
| |
| bus_name = mnl_attr_get_str(tb[DEVLINK_ATTR_BUS_NAME]); |
| dev_name = mnl_attr_get_str(tb[DEVLINK_ATTR_DEV_NAME]); |
| port_ifindex = mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_INDEX]); |
| port_ifname = mnl_attr_get_str(tb[DEVLINK_ATTR_PORT_NETDEV_NAME]); |
| ifname_map = ifname_map_alloc(bus_name, dev_name, |
| port_ifindex, port_ifname); |
| if (!ifname_map) |
| return MNL_CB_ERROR; |
| list_add(&ifname_map->list, &dl->ifname_map_list); |
| |
| return MNL_CB_OK; |
| } |
| |
| static void ifname_map_fini(struct dl *dl) |
| { |
| struct ifname_map *ifname_map, *tmp; |
| |
| list_for_each_entry_safe(ifname_map, tmp, |
| &dl->ifname_map_list, list) { |
| list_del(&ifname_map->list); |
| ifname_map_free(ifname_map); |
| } |
| } |
| |
| static int ifname_map_init(struct dl *dl) |
| { |
| struct nlmsghdr *nlh; |
| int err; |
| |
| INIT_LIST_HEAD(&dl->ifname_map_list); |
| |
| nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_PORT_GET, |
| NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP); |
| |
| err = _mnlg_socket_sndrcv(dl->nlg, nlh, ifname_map_cb, dl); |
| if (err) { |
| ifname_map_fini(dl); |
| return err; |
| } |
| return 0; |
| } |
| |
| static int ifname_map_lookup(struct dl *dl, const char *ifname, |
| char **p_bus_name, char **p_dev_name, |
| uint32_t *p_port_index) |
| { |
| struct ifname_map *ifname_map; |
| |
| list_for_each_entry(ifname_map, &dl->ifname_map_list, list) { |
| if (strcmp(ifname, ifname_map->ifname) == 0) { |
| *p_bus_name = ifname_map->bus_name; |
| *p_dev_name = ifname_map->dev_name; |
| *p_port_index = ifname_map->port_index; |
| return 0; |
| } |
| } |
| return -ENOENT; |
| } |
| |
| static int ifname_map_rev_lookup(struct dl *dl, const char *bus_name, |
| const char *dev_name, uint32_t port_index, |
| char **p_ifname) |
| { |
| struct ifname_map *ifname_map; |
| |
| list_for_each_entry(ifname_map, &dl->ifname_map_list, list) { |
| if (strcmp(bus_name, ifname_map->bus_name) == 0 && |
| strcmp(dev_name, ifname_map->dev_name) == 0 && |
| port_index == ifname_map->port_index) { |
| *p_ifname = ifname_map->ifname; |
| return 0; |
| } |
| } |
| return -ENOENT; |
| } |
| |
| static unsigned int strslashcount(char *str) |
| { |
| unsigned int count = 0; |
| char *pos = str; |
| |
| while ((pos = strchr(pos, '/'))) { |
| count++; |
| pos++; |
| } |
| return count; |
| } |
| |
| static int strslashrsplit(char *str, char **before, char **after) |
| { |
| char *slash; |
| |
| slash = strrchr(str, '/'); |
| if (!slash) |
| return -EINVAL; |
| *slash = '\0'; |
| *before = str; |
| *after = slash + 1; |
| return 0; |
| } |
| |
| static int strtouint32_t(const char *str, uint32_t *p_val) |
| { |
| char *endptr; |
| unsigned long int val; |
| |
| val = strtoul(str, &endptr, 10); |
| if (endptr == str || *endptr != '\0') |
| return -EINVAL; |
| if (val > UINT_MAX) |
| return -ERANGE; |
| *p_val = val; |
| return 0; |
| } |
| |
| static int __dl_argv_handle(char *str, char **p_bus_name, char **p_dev_name) |
| { |
| strslashrsplit(str, p_bus_name, p_dev_name); |
| return 0; |
| } |
| |
| static int dl_argv_handle(struct dl *dl, char **p_bus_name, char **p_dev_name) |
| { |
| char *str = dl_argv_next(dl); |
| |
| if (!str) { |
| pr_err("Devlink identification (\"bus_name/dev_name\") expected\n"); |
| return -EINVAL; |
| } |
| if (strslashcount(str) != 1) { |
| pr_err("Wrong devlink identification string format.\n"); |
| pr_err("Expected \"bus_name/dev_name\".\n"); |
| return -EINVAL; |
| } |
| return __dl_argv_handle(str, p_bus_name, p_dev_name); |
| } |
| |
| static int __dl_argv_handle_port(char *str, |
| char **p_bus_name, char **p_dev_name, |
| uint32_t *p_port_index) |
| { |
| char *handlestr = handlestr; |
| char *portstr = portstr; |
| int err; |
| |
| strslashrsplit(str, &handlestr, &portstr); |
| err = strtouint32_t(portstr, p_port_index); |
| if (err) { |
| pr_err("Port index \"%s\" is not a number or not within range\n", |
| portstr); |
| return err; |
| } |
| strslashrsplit(handlestr, p_bus_name, p_dev_name); |
| return 0; |
| } |
| |
| static int __dl_argv_handle_port_ifname(struct dl *dl, char *str, |
| char **p_bus_name, char **p_dev_name, |
| uint32_t *p_port_index) |
| { |
| int err; |
| |
| err = ifname_map_lookup(dl, str, p_bus_name, p_dev_name, |
| p_port_index); |
| if (err) { |
| pr_err("Netdevice \"%s\" not found\n", str); |
| return err; |
| } |
| return 0; |
| } |
| |
| static int dl_argv_handle_port(struct dl *dl, char **p_bus_name, |
| char **p_dev_name, uint32_t *p_port_index) |
| { |
| char *str = dl_argv_next(dl); |
| unsigned int slash_count; |
| |
| if (!str) { |
| pr_err("Port identification (\"bus_name/dev_name/port_index\" or \"netdev ifname\") expected.\n"); |
| return -EINVAL; |
| } |
| slash_count = strslashcount(str); |
| if (slash_count != 2 && slash_count != 0) { |
| pr_err("Wrong port identification string format.\n"); |
| pr_err("Expected \"bus_name/dev_name/port_index\" or \"netdev_ifname\".\n"); |
| return -EINVAL; |
| } |
| if (slash_count == 2) { |
| return __dl_argv_handle_port(str, p_bus_name, |
| p_dev_name, p_port_index); |
| } else if (slash_count == 0) { |
| return __dl_argv_handle_port_ifname(dl, str, p_bus_name, |
| p_dev_name, p_port_index); |
| } |
| return 0; |
| } |
| |
| static int dl_argv_handle_both(struct dl *dl, char **p_bus_name, |
| char **p_dev_name, uint32_t *p_port_index, |
| uint32_t *p_handle_bit) |
| { |
| char *str = dl_argv_next(dl); |
| unsigned int slash_count; |
| int err; |
| |
| if (!str) { |
| pr_err("One of following identifications expected:\n" |
| "Devlink identification (\"bus_name/dev_name\")\n" |
| "Port identification (\"bus_name/dev_name/port_index\" or \"netdev ifname\")\n"); |
| return -EINVAL; |
| } |
| slash_count = strslashcount(str); |
| if (slash_count == 1) { |
| err = __dl_argv_handle(str, p_bus_name, p_dev_name); |
| if (err) |
| return err; |
| *p_handle_bit = DL_OPT_HANDLE; |
| } else if (slash_count == 2) { |
| err = __dl_argv_handle_port(str, p_bus_name, |
| p_dev_name, p_port_index); |
| if (err) |
| return err; |
| *p_handle_bit = DL_OPT_HANDLEP; |
| } else if (slash_count == 0) { |
| err = __dl_argv_handle_port_ifname(dl, str, p_bus_name, |
| p_dev_name, p_port_index); |
| if (err) |
| return err; |
| *p_handle_bit = DL_OPT_HANDLEP; |
| } else { |
| pr_err("Wrong port identification string format.\n"); |
| pr_err("Expected \"bus_name/dev_name\" or \"bus_name/dev_name/port_index\" or \"netdev_ifname\".\n"); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static int dl_argv_uint32_t(struct dl *dl, uint32_t *p_val) |
| { |
| char *str = dl_argv_next(dl); |
| int err; |
| |
| if (!str) { |
| pr_err("Unsigned number argument expected\n"); |
| return -EINVAL; |
| } |
| |
| err = strtouint32_t(str, p_val); |
| if (err) { |
| pr_err("\"%s\" is not a number or not within range\n", str); |
| return err; |
| } |
| return 0; |
| } |
| |
| static int dl_argv_str(struct dl *dl, const char **p_str) |
| { |
| const char *str = dl_argv_next(dl); |
| |
| if (!str) { |
| pr_err("String parameter expected\n"); |
| return -EINVAL; |
| } |
| *p_str = str; |
| return 0; |
| } |
| |
| static int port_type_get(const char *typestr, enum devlink_port_type *p_type) |
| { |
| if (strcmp(typestr, "auto") == 0) { |
| *p_type = DEVLINK_PORT_TYPE_AUTO; |
| } else if (strcmp(typestr, "eth") == 0) { |
| *p_type = DEVLINK_PORT_TYPE_ETH; |
| } else if (strcmp(typestr, "ib") == 0) { |
| *p_type = DEVLINK_PORT_TYPE_IB; |
| } else { |
| pr_err("Unknown port type \"%s\"\n", typestr); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static int dl_argv_parse(struct dl *dl, uint32_t o_required, |
| uint32_t o_optional) |
| { |
| struct dl_opts *opts = &dl->opts; |
| uint32_t o_all = o_required | o_optional; |
| uint32_t o_found = 0; |
| int err; |
| |
| if (o_required & DL_OPT_HANDLE && o_required & DL_OPT_HANDLEP) { |
| uint32_t handle_bit = handle_bit; |
| |
| err = dl_argv_handle_both(dl, &opts->bus_name, &opts->dev_name, |
| &opts->port_index, &handle_bit); |
| if (err) |
| return err; |
| o_found |= handle_bit; |
| } else if (o_required & DL_OPT_HANDLE) { |
| err = dl_argv_handle(dl, &opts->bus_name, &opts->dev_name); |
| if (err) |
| return err; |
| o_found |= DL_OPT_HANDLE; |
| } else if (o_required & DL_OPT_HANDLEP) { |
| err = dl_argv_handle_port(dl, &opts->bus_name, &opts->dev_name, |
| &opts->port_index); |
| if (err) |
| return err; |
| o_found |= DL_OPT_HANDLEP; |
| } |
| |
| while (dl_argc(dl)) { |
| if (dl_argv_match(dl, "type") && |
| (o_all & DL_OPT_PORT_TYPE)) { |
| const char *typestr; |
| |
| dl_arg_inc(dl); |
| err = dl_argv_str(dl, &typestr); |
| if (err) |
| return err; |
| err = port_type_get(typestr, &opts->port_type); |
| if (err) |
| return err; |
| o_found |= DL_OPT_PORT_TYPE; |
| } else if (dl_argv_match(dl, "count") && |
| (o_all & DL_OPT_PORT_COUNT)) { |
| dl_arg_inc(dl); |
| err = dl_argv_uint32_t(dl, &opts->port_count); |
| if (err) |
| return err; |
| o_found |= DL_OPT_PORT_COUNT; |
| } else { |
| pr_err("Unknown option \"%s\"\n", dl_argv(dl)); |
| return -EINVAL; |
| } |
| } |
| |
| opts->present = o_found; |
| |
| if ((o_required & DL_OPT_PORT_TYPE) && !(o_found & DL_OPT_PORT_TYPE)) { |
| pr_err("Port type option expected.\n"); |
| return -EINVAL; |
| } |
| |
| if ((o_required & DL_OPT_PORT_COUNT) && |
| !(o_found & DL_OPT_PORT_COUNT)) { |
| pr_err("Port split count option expected.\n"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static void dl_opts_put(struct nlmsghdr *nlh, struct dl *dl) |
| { |
| struct dl_opts *opts = &dl->opts; |
| |
| if (opts->present & DL_OPT_HANDLE) { |
| mnl_attr_put_strz(nlh, DEVLINK_ATTR_BUS_NAME, opts->bus_name); |
| mnl_attr_put_strz(nlh, DEVLINK_ATTR_DEV_NAME, opts->dev_name); |
| } else if (opts->present & DL_OPT_HANDLEP) { |
| mnl_attr_put_strz(nlh, DEVLINK_ATTR_BUS_NAME, opts->bus_name); |
| mnl_attr_put_strz(nlh, DEVLINK_ATTR_DEV_NAME, opts->dev_name); |
| mnl_attr_put_u32(nlh, DEVLINK_ATTR_PORT_INDEX, |
| opts->port_index); |
| } |
| if (opts->present & DL_OPT_PORT_TYPE) |
| mnl_attr_put_u16(nlh, DEVLINK_ATTR_PORT_TYPE, |
| opts->port_type); |
| if (opts->present & DL_OPT_PORT_COUNT) |
| mnl_attr_put_u32(nlh, DEVLINK_ATTR_PORT_SPLIT_COUNT, |
| opts->port_count); |
| } |
| |
| static int dl_argv_parse_put(struct nlmsghdr *nlh, struct dl *dl, |
| uint32_t o_required, uint32_t o_optional) |
| { |
| int err; |
| |
| err = dl_argv_parse(dl, o_required, o_optional); |
| if (err) |
| return err; |
| dl_opts_put(nlh, dl); |
| return 0; |
| } |
| |
| |
| static void cmd_dev_help(void) |
| { |
| pr_out("Usage: devlink dev show [ DEV ]\n"); |
| } |
| |
| static void __pr_out_handle(const char *bus_name, const char *dev_name) |
| { |
| pr_out("%s/%s", bus_name, dev_name); |
| } |
| |
| static void pr_out_handle(struct nlattr **tb) |
| { |
| __pr_out_handle(mnl_attr_get_str(tb[DEVLINK_ATTR_BUS_NAME]), |
| mnl_attr_get_str(tb[DEVLINK_ATTR_DEV_NAME])); |
| } |
| |
| static void __pr_out_port_handle(const char *bus_name, const char *dev_name, |
| uint32_t port_index) |
| { |
| __pr_out_handle(bus_name, dev_name); |
| pr_out("/%d", port_index); |
| } |
| |
| static void pr_out_port_handle(struct nlattr **tb) |
| { |
| __pr_out_port_handle(mnl_attr_get_str(tb[DEVLINK_ATTR_BUS_NAME]), |
| mnl_attr_get_str(tb[DEVLINK_ATTR_DEV_NAME]), |
| mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_INDEX])); |
| } |
| |
| static void __pr_out_port_handle_nice(struct dl *dl, const char *bus_name, |
| const char *dev_name, uint32_t port_index) |
| { |
| char *ifname; |
| int err; |
| |
| if (dl->no_nice_names) |
| goto no_nice_names; |
| |
| err = ifname_map_rev_lookup(dl, bus_name, dev_name, |
| port_index, &ifname); |
| if (err) |
| goto no_nice_names; |
| pr_out("%s", ifname); |
| return; |
| |
| no_nice_names: |
| __pr_out_port_handle(bus_name, dev_name, port_index); |
| } |
| |
| static void pr_out_dev(struct nlattr **tb) |
| { |
| pr_out_handle(tb); |
| pr_out("\n"); |
| } |
| |
| static int cmd_dev_show_cb(const struct nlmsghdr *nlh, void *data) |
| { |
| struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {}; |
| struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| |
| mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb); |
| if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME]) |
| return MNL_CB_ERROR; |
| pr_out_dev(tb); |
| return MNL_CB_OK; |
| } |
| |
| static int cmd_dev_show(struct dl *dl) |
| { |
| struct nlmsghdr *nlh; |
| uint16_t flags = NLM_F_REQUEST | NLM_F_ACK; |
| int err; |
| |
| if (dl_argc(dl) == 0) |
| flags |= NLM_F_DUMP; |
| |
| nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_GET, flags); |
| |
| if (dl_argc(dl) > 0) { |
| err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE, 0); |
| if (err) |
| return err; |
| } |
| |
| return _mnlg_socket_sndrcv(dl->nlg, nlh, cmd_dev_show_cb, NULL); |
| } |
| |
| static int cmd_dev(struct dl *dl) |
| { |
| if (dl_argv_match(dl, "help")) { |
| cmd_dev_help(); |
| return 0; |
| } else if (dl_argv_match(dl, "show") || |
| dl_argv_match(dl, "list") || dl_no_arg(dl)) { |
| dl_arg_inc(dl); |
| return cmd_dev_show(dl); |
| } |
| pr_err("Command \"%s\" not found\n", dl_argv(dl)); |
| return -ENOENT; |
| } |
| |
| static void cmd_port_help(void) |
| { |
| pr_out("Usage: devlink port show [ DEV/PORT_INDEX ]\n"); |
| pr_out(" devlink port set DEV/PORT_INDEX [ type { eth | ib | auto} ]\n"); |
| pr_out(" devlink port split DEV/PORT_INDEX count COUNT\n"); |
| pr_out(" devlink port unsplit DEV/PORT_INDEX\n"); |
| } |
| |
| static const char *port_type_name(uint32_t type) |
| { |
| switch (type) { |
| case DEVLINK_PORT_TYPE_NOTSET: return "notset"; |
| case DEVLINK_PORT_TYPE_AUTO: return "auto"; |
| case DEVLINK_PORT_TYPE_ETH: return "eth"; |
| case DEVLINK_PORT_TYPE_IB: return "ib"; |
| default: return "<unknown type>"; |
| } |
| } |
| |
| static void pr_out_port(struct nlattr **tb) |
| { |
| struct nlattr *pt_attr = tb[DEVLINK_ATTR_PORT_TYPE]; |
| struct nlattr *dpt_attr = tb[DEVLINK_ATTR_PORT_DESIRED_TYPE]; |
| |
| pr_out_port_handle(tb); |
| pr_out(":"); |
| if (pt_attr) { |
| uint16_t port_type = mnl_attr_get_u16(pt_attr); |
| |
| pr_out(" type %s", port_type_name(port_type)); |
| if (dpt_attr) { |
| uint16_t des_port_type = mnl_attr_get_u16(dpt_attr); |
| |
| if (port_type != des_port_type) |
| pr_out("(%s)", port_type_name(des_port_type)); |
| } |
| } |
| if (tb[DEVLINK_ATTR_PORT_NETDEV_NAME]) |
| pr_out(" netdev %s", |
| mnl_attr_get_str(tb[DEVLINK_ATTR_PORT_NETDEV_NAME])); |
| if (tb[DEVLINK_ATTR_PORT_IBDEV_NAME]) |
| pr_out(" ibdev %s", |
| mnl_attr_get_str(tb[DEVLINK_ATTR_PORT_IBDEV_NAME])); |
| if (tb[DEVLINK_ATTR_PORT_SPLIT_GROUP]) |
| pr_out(" split_group %u", |
| mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_SPLIT_GROUP])); |
| pr_out("\n"); |
| } |
| |
| static int cmd_port_show_cb(const struct nlmsghdr *nlh, void *data) |
| { |
| struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {}; |
| struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| |
| mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb); |
| if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME] || |
| !tb[DEVLINK_ATTR_PORT_INDEX]) |
| return MNL_CB_ERROR; |
| pr_out_port(tb); |
| return MNL_CB_OK; |
| } |
| |
| static int cmd_port_show(struct dl *dl) |
| { |
| struct nlmsghdr *nlh; |
| uint16_t flags = NLM_F_REQUEST | NLM_F_ACK; |
| int err; |
| |
| if (dl_argc(dl) == 0) |
| flags |= NLM_F_DUMP; |
| |
| nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_PORT_GET, flags); |
| |
| if (dl_argc(dl) > 0) { |
| err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLEP, 0); |
| if (err) |
| return err; |
| } |
| |
| return _mnlg_socket_sndrcv(dl->nlg, nlh, cmd_port_show_cb, NULL); |
| } |
| |
| static int cmd_port_set(struct dl *dl) |
| { |
| struct nlmsghdr *nlh; |
| int err; |
| |
| nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_PORT_SET, |
| NLM_F_REQUEST | NLM_F_ACK); |
| |
| err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLEP | DL_OPT_PORT_TYPE, 0); |
| if (err) |
| return err; |
| |
| return _mnlg_socket_sndrcv(dl->nlg, nlh, NULL, NULL); |
| } |
| |
| static int cmd_port_split(struct dl *dl) |
| { |
| struct nlmsghdr *nlh; |
| int err; |
| |
| nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_PORT_SPLIT, |
| NLM_F_REQUEST | NLM_F_ACK); |
| |
| err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLEP | DL_OPT_PORT_COUNT, 0); |
| if (err) |
| return err; |
| |
| return _mnlg_socket_sndrcv(dl->nlg, nlh, NULL, NULL); |
| } |
| |
| static int cmd_port_unsplit(struct dl *dl) |
| { |
| struct nlmsghdr *nlh; |
| int err; |
| |
| nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_PORT_UNSPLIT, |
| NLM_F_REQUEST | NLM_F_ACK); |
| |
| err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLEP, 0); |
| if (err) |
| return err; |
| |
| return _mnlg_socket_sndrcv(dl->nlg, nlh, NULL, NULL); |
| } |
| |
| static int cmd_port(struct dl *dl) |
| { |
| if (dl_argv_match(dl, "help")) { |
| cmd_port_help(); |
| return 0; |
| } else if (dl_argv_match(dl, "show") || |
| dl_argv_match(dl, "list") || dl_no_arg(dl)) { |
| dl_arg_inc(dl); |
| return cmd_port_show(dl); |
| } else if (dl_argv_match(dl, "set")) { |
| dl_arg_inc(dl); |
| return cmd_port_set(dl); |
| } else if (dl_argv_match(dl, "split")) { |
| dl_arg_inc(dl); |
| return cmd_port_split(dl); |
| } else if (dl_argv_match(dl, "unsplit")) { |
| dl_arg_inc(dl); |
| return cmd_port_unsplit(dl); |
| } |
| pr_err("Command \"%s\" not found\n", dl_argv(dl)); |
| return -ENOENT; |
| } |
| |
| static const char *cmd_name(uint8_t cmd) |
| { |
| switch (cmd) { |
| case DEVLINK_CMD_UNSPEC: return "unspec"; |
| case DEVLINK_CMD_GET: return "get"; |
| case DEVLINK_CMD_SET: return "set"; |
| case DEVLINK_CMD_NEW: return "new"; |
| case DEVLINK_CMD_DEL: return "del"; |
| case DEVLINK_CMD_PORT_GET: return "get"; |
| case DEVLINK_CMD_PORT_SET: return "set"; |
| case DEVLINK_CMD_PORT_NEW: return "net"; |
| case DEVLINK_CMD_PORT_DEL: return "del"; |
| default: return "<unknown cmd>"; |
| } |
| } |
| |
| static const char *cmd_obj(uint8_t cmd) |
| { |
| switch (cmd) { |
| case DEVLINK_CMD_UNSPEC: return "unspec"; |
| case DEVLINK_CMD_GET: |
| case DEVLINK_CMD_SET: |
| case DEVLINK_CMD_NEW: |
| case DEVLINK_CMD_DEL: |
| return "dev"; |
| case DEVLINK_CMD_PORT_GET: |
| case DEVLINK_CMD_PORT_SET: |
| case DEVLINK_CMD_PORT_NEW: |
| case DEVLINK_CMD_PORT_DEL: |
| return "port"; |
| default: return "<unknown obj>"; |
| } |
| } |
| |
| static void pr_out_mon_header(uint8_t cmd) |
| { |
| pr_out("[%s,%s] ", cmd_obj(cmd), cmd_name(cmd)); |
| } |
| |
| static bool cmd_filter_check(struct dl *dl, uint8_t cmd) |
| { |
| const char *obj = cmd_obj(cmd); |
| unsigned int index = 0; |
| const char *cur_obj; |
| |
| if (dl_no_arg(dl)) |
| return true; |
| while ((cur_obj = dl_argv_index(dl, index++))) { |
| if (strcmp(cur_obj, obj) == 0 || strcmp(cur_obj, "all") == 0) |
| return true; |
| } |
| return false; |
| } |
| |
| static int cmd_mon_show_cb(const struct nlmsghdr *nlh, void *data) |
| { |
| struct dl *dl = data; |
| struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {}; |
| struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| uint8_t cmd = genl->cmd; |
| |
| if (!cmd_filter_check(dl, cmd)) |
| return MNL_CB_OK; |
| |
| switch (cmd) { |
| case DEVLINK_CMD_GET: /* fall through */ |
| case DEVLINK_CMD_SET: /* fall through */ |
| case DEVLINK_CMD_NEW: /* fall through */ |
| case DEVLINK_CMD_DEL: |
| mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb); |
| if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME]) |
| return MNL_CB_ERROR; |
| pr_out_mon_header(genl->cmd); |
| pr_out_dev(tb); |
| break; |
| case DEVLINK_CMD_PORT_GET: /* fall through */ |
| case DEVLINK_CMD_PORT_SET: /* fall through */ |
| case DEVLINK_CMD_PORT_NEW: /* fall through */ |
| case DEVLINK_CMD_PORT_DEL: |
| mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb); |
| if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME] || |
| !tb[DEVLINK_ATTR_PORT_INDEX]) |
| return MNL_CB_ERROR; |
| pr_out_mon_header(genl->cmd); |
| pr_out_port(tb); |
| break; |
| } |
| return MNL_CB_OK; |
| } |
| |
| static int cmd_mon_show(struct dl *dl) |
| { |
| int err; |
| unsigned int index = 0; |
| const char *cur_obj; |
| |
| while ((cur_obj = dl_argv_index(dl, index++))) { |
| if (strcmp(cur_obj, "all") != 0 && |
| strcmp(cur_obj, "dev") != 0 && |
| strcmp(cur_obj, "port") != 0) { |
| pr_err("Unknown object \"%s\"\n", cur_obj); |
| return -EINVAL; |
| } |
| } |
| err = _mnlg_socket_group_add(dl->nlg, DEVLINK_GENL_MCGRP_CONFIG_NAME); |
| if (err) |
| return err; |
| err = _mnlg_socket_recv_run(dl->nlg, cmd_mon_show_cb, dl); |
| if (err) |
| return err; |
| return 0; |
| } |
| |
| static void cmd_mon_help(void) |
| { |
| pr_out("Usage: devlink monitor [ all | OBJECT-LIST ]\n" |
| "where OBJECT-LIST := { dev | port }\n"); |
| } |
| |
| static int cmd_mon(struct dl *dl) |
| { |
| if (dl_argv_match(dl, "help")) { |
| cmd_mon_help(); |
| return 0; |
| } else if (dl_no_arg(dl)) { |
| dl_arg_inc(dl); |
| return cmd_mon_show(dl); |
| } |
| pr_err("Command \"%s\" not found\n", dl_argv(dl)); |
| return -ENOENT; |
| } |
| |
| static void help(void) |
| { |
| pr_out("Usage: devlink [ OPTIONS ] OBJECT { COMMAND | help }\n" |
| "where OBJECT := { dev | port | monitor }\n" |
| " OPTIONS := { -V[ersion] | -n[no-nice-names] }\n"); |
| } |
| |
| static int dl_cmd(struct dl *dl) |
| { |
| if (dl_argv_match(dl, "help") || dl_no_arg(dl)) { |
| help(); |
| return 0; |
| } else if (dl_argv_match(dl, "dev")) { |
| dl_arg_inc(dl); |
| return cmd_dev(dl); |
| } else if (dl_argv_match(dl, "port")) { |
| dl_arg_inc(dl); |
| return cmd_port(dl); |
| } else if (dl_argv_match(dl, "monitor")) { |
| dl_arg_inc(dl); |
| return cmd_mon(dl); |
| } |
| pr_err("Object \"%s\" not found\n", dl_argv(dl)); |
| return -ENOENT; |
| } |
| |
| static int dl_init(struct dl *dl, int argc, char **argv) |
| { |
| int err; |
| |
| dl->argc = argc; |
| dl->argv = argv; |
| |
| dl->nlg = mnlg_socket_open(DEVLINK_GENL_NAME, DEVLINK_GENL_VERSION); |
| if (!dl->nlg) { |
| pr_err("Failed to connect to devlink Netlink\n"); |
| return -errno; |
| } |
| |
| err = ifname_map_init(dl); |
| if (err) { |
| pr_err("Failed to create index map\n"); |
| goto err_ifname_map_create; |
| } |
| return 0; |
| |
| err_ifname_map_create: |
| mnlg_socket_close(dl->nlg); |
| return err; |
| } |
| |
| static void dl_fini(struct dl *dl) |
| { |
| ifname_map_fini(dl); |
| mnlg_socket_close(dl->nlg); |
| } |
| |
| static struct dl *dl_alloc(void) |
| { |
| struct dl *dl; |
| |
| dl = calloc(1, sizeof(*dl)); |
| if (!dl) |
| return NULL; |
| return dl; |
| } |
| |
| static void dl_free(struct dl *dl) |
| { |
| free(dl); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| static const struct option long_options[] = { |
| { "Version", no_argument, NULL, 'V' }, |
| { "no-nice-names", no_argument, NULL, 'n' }, |
| { NULL, 0, NULL, 0 } |
| }; |
| struct dl *dl; |
| int opt; |
| int err; |
| int ret; |
| |
| dl = dl_alloc(); |
| if (!dl) { |
| pr_err("Failed to allocate memory for devlink\n"); |
| return EXIT_FAILURE; |
| } |
| |
| while ((opt = getopt_long(argc, argv, "Vn", |
| long_options, NULL)) >= 0) { |
| |
| switch (opt) { |
| case 'V': |
| printf("devlink utility, iproute2-ss%s\n", SNAPSHOT); |
| return EXIT_SUCCESS; |
| case 'n': |
| dl->no_nice_names = true; |
| break; |
| default: |
| pr_err("Unknown option.\n"); |
| help(); |
| return EXIT_FAILURE; |
| } |
| } |
| |
| argc -= optind; |
| argv += optind; |
| |
| err = dl_init(dl, argc, argv); |
| if (err) { |
| ret = EXIT_FAILURE; |
| goto dl_free; |
| } |
| |
| err = dl_cmd(dl); |
| if (err) { |
| ret = EXIT_FAILURE; |
| goto dl_fini; |
| } |
| |
| ret = EXIT_SUCCESS; |
| |
| dl_fini: |
| dl_fini(dl); |
| dl_free: |
| dl_free(dl); |
| |
| return ret; |
| } |