| /* |
| * link.c TIPC link functionality. |
| * |
| * 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: Richard Alpe <richard.alpe@ericsson.com> |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| |
| #include <linux/tipc_netlink.h> |
| #include <linux/tipc.h> |
| #include <linux/genetlink.h> |
| #include <libmnl/libmnl.h> |
| |
| #include "cmdl.h" |
| #include "msg.h" |
| #include "link.h" |
| |
| static int link_list_cb(const struct nlmsghdr *nlh, void *data) |
| { |
| struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| struct nlattr *info[TIPC_NLA_MAX + 1] = {}; |
| struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1] = {}; |
| |
| mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); |
| if (!info[TIPC_NLA_LINK]) |
| return MNL_CB_ERROR; |
| |
| mnl_attr_parse_nested(info[TIPC_NLA_LINK], parse_attrs, attrs); |
| if (!attrs[TIPC_NLA_LINK_NAME]) |
| return MNL_CB_ERROR; |
| |
| printf("%s: ", mnl_attr_get_str(attrs[TIPC_NLA_LINK_NAME])); |
| |
| if (attrs[TIPC_NLA_LINK_UP]) |
| printf("up\n"); |
| else |
| printf("down\n"); |
| |
| return MNL_CB_OK; |
| } |
| |
| static int cmd_link_list(struct nlmsghdr *nlh, const struct cmd *cmd, |
| struct cmdl *cmdl, void *data) |
| { |
| char buf[MNL_SOCKET_BUFFER_SIZE]; |
| |
| if (help_flag) { |
| fprintf(stderr, "Usage: %s link list\n", cmdl->argv[0]); |
| return -EINVAL; |
| } |
| |
| if (!(nlh = msg_init(buf, TIPC_NL_LINK_GET))) { |
| fprintf(stderr, "error, message initialisation failed\n"); |
| return -1; |
| } |
| |
| return msg_dumpit(nlh, link_list_cb, NULL); |
| } |
| |
| static int link_get_cb(const struct nlmsghdr *nlh, void *data) |
| { |
| int *prop = data; |
| struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| struct nlattr *info[TIPC_NLA_MAX + 1] = {}; |
| struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1] = {}; |
| struct nlattr *props[TIPC_NLA_PROP_MAX + 1] = {}; |
| |
| mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); |
| if (!info[TIPC_NLA_LINK]) |
| return MNL_CB_ERROR; |
| |
| mnl_attr_parse_nested(info[TIPC_NLA_LINK], parse_attrs, attrs); |
| if (!attrs[TIPC_NLA_LINK_PROP]) |
| return MNL_CB_ERROR; |
| |
| mnl_attr_parse_nested(attrs[TIPC_NLA_LINK_PROP], parse_attrs, props); |
| if (!props[*prop]) |
| return MNL_CB_ERROR; |
| |
| printf("%u\n", mnl_attr_get_u32(props[*prop])); |
| |
| return MNL_CB_OK; |
| } |
| |
| |
| static int cmd_link_get_prop(struct nlmsghdr *nlh, const struct cmd *cmd, |
| struct cmdl *cmdl, void *data) |
| { |
| int prop; |
| char buf[MNL_SOCKET_BUFFER_SIZE]; |
| struct opt *opt; |
| struct opt opts[] = { |
| { "link", NULL }, |
| { NULL } |
| }; |
| |
| if (strcmp(cmd->cmd, "priority") == 0) |
| prop = TIPC_NLA_PROP_PRIO; |
| else if ((strcmp(cmd->cmd, "tolerance") == 0)) |
| prop = TIPC_NLA_PROP_TOL; |
| else if ((strcmp(cmd->cmd, "window") == 0)) |
| prop = TIPC_NLA_PROP_WIN; |
| else |
| return -EINVAL; |
| |
| if (help_flag) { |
| (cmd->help)(cmdl); |
| return -EINVAL; |
| } |
| |
| if (parse_opts(opts, cmdl) < 0) |
| return -EINVAL; |
| |
| if (!(nlh = msg_init(buf, TIPC_NL_LINK_GET))) { |
| fprintf(stderr, "error, message initialisation failed\n"); |
| return -1; |
| } |
| |
| if (!(opt = get_opt(opts, "link"))) { |
| fprintf(stderr, "error, missing link\n"); |
| return -EINVAL; |
| } |
| mnl_attr_put_strz(nlh, TIPC_NLA_LINK_NAME, opt->val); |
| |
| return msg_doit(nlh, link_get_cb, &prop); |
| } |
| |
| static void cmd_link_get_help(struct cmdl *cmdl) |
| { |
| fprintf(stderr, "Usage: %s link get PPROPERTY link LINK\n\n" |
| "PROPERTIES\n" |
| " tolerance - Get link tolerance\n" |
| " priority - Get link priority\n" |
| " window - Get link window\n", |
| cmdl->argv[0]); |
| } |
| |
| static int cmd_link_get(struct nlmsghdr *nlh, const struct cmd *cmd, |
| struct cmdl *cmdl, void *data) |
| { |
| const struct cmd cmds[] = { |
| { "priority", cmd_link_get_prop, cmd_link_get_help }, |
| { "tolerance", cmd_link_get_prop, cmd_link_get_help }, |
| { "window", cmd_link_get_prop, cmd_link_get_help }, |
| { NULL } |
| }; |
| |
| return run_cmd(nlh, cmd, cmds, cmdl, NULL); |
| } |
| |
| static void cmd_link_stat_reset_help(struct cmdl *cmdl) |
| { |
| fprintf(stderr, "Usage: %s link stat reset link LINK\n\n", cmdl->argv[0]); |
| } |
| |
| static int cmd_link_stat_reset(struct nlmsghdr *nlh, const struct cmd *cmd, |
| struct cmdl *cmdl, void *data) |
| { |
| char *link; |
| char buf[MNL_SOCKET_BUFFER_SIZE]; |
| struct opt *opt; |
| struct nlattr *nest; |
| struct opt opts[] = { |
| { "link", NULL }, |
| { NULL } |
| }; |
| |
| if (help_flag) { |
| (cmd->help)(cmdl); |
| return -EINVAL; |
| } |
| |
| if (parse_opts(opts, cmdl) != 1) { |
| (cmd->help)(cmdl); |
| return -EINVAL; |
| } |
| |
| if (!(nlh = msg_init(buf, TIPC_NL_LINK_RESET_STATS))) { |
| fprintf(stderr, "error, message initialisation failed\n"); |
| return -1; |
| } |
| |
| if (!(opt = get_opt(opts, "link"))) { |
| fprintf(stderr, "error, missing link\n"); |
| return -EINVAL; |
| } |
| link = opt->val; |
| |
| nest = mnl_attr_nest_start(nlh, TIPC_NLA_LINK); |
| mnl_attr_put_strz(nlh, TIPC_NLA_LINK_NAME, link); |
| mnl_attr_nest_end(nlh, nest); |
| |
| return msg_doit(nlh, NULL, NULL); |
| } |
| |
| static uint32_t perc(uint32_t count, uint32_t total) |
| { |
| return (count * 100 + (total / 2)) / total; |
| } |
| |
| static int _show_link_stat(struct nlattr *attrs[], struct nlattr *prop[], |
| struct nlattr *stats[]) |
| { |
| uint32_t proft; |
| |
| if (attrs[TIPC_NLA_LINK_ACTIVE]) |
| printf(" ACTIVE"); |
| else if (attrs[TIPC_NLA_LINK_UP]) |
| printf(" STANDBY"); |
| else |
| printf(" DEFUNCT"); |
| |
| printf(" MTU:%u Priority:%u Tolerance:%u ms Window:%u packets\n", |
| mnl_attr_get_u32(attrs[TIPC_NLA_LINK_MTU]), |
| mnl_attr_get_u32(prop[TIPC_NLA_PROP_PRIO]), |
| mnl_attr_get_u32(prop[TIPC_NLA_PROP_TOL]), |
| mnl_attr_get_u32(prop[TIPC_NLA_PROP_WIN])); |
| |
| printf(" RX packets:%u fragments:%u/%u bundles:%u/%u\n", |
| mnl_attr_get_u32(attrs[TIPC_NLA_LINK_RX]) - |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_INFO]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED])); |
| |
| printf(" TX packets:%u fragments:%u/%u bundles:%u/%u\n", |
| mnl_attr_get_u32(attrs[TIPC_NLA_LINK_TX]) - |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_INFO]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED])); |
| |
| proft = mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]); |
| printf(" TX profile sample:%u packets average:%u octets\n", |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) / proft); |
| |
| printf(" 0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% " |
| "-16384:%u%% -32768:%u%% -66000:%u%%\n", |
| perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]), proft), |
| perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]), proft), |
| perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]), proft), |
| perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]), proft), |
| perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]), proft), |
| perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]), proft), |
| perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]), proft)); |
| |
| printf(" RX states:%u probes:%u naks:%u defs:%u dups:%u\n", |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_STATES]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_DUPLICATES])); |
| |
| printf(" TX states:%u probes:%u naks:%u acks:%u dups:%u\n", |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_STATES]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED])); |
| |
| printf(" Congestion link:%u Send queue max:%u avg:%u\n", |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE])); |
| |
| return MNL_CB_OK; |
| } |
| |
| static int _show_bc_link_stat(struct nlattr *prop[], struct nlattr *stats[]) |
| { |
| printf(" Window:%u packets\n", |
| mnl_attr_get_u32(prop[TIPC_NLA_PROP_WIN])); |
| |
| printf(" RX packets:%u fragments:%u/%u bundles:%u/%u\n", |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_INFO]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED])); |
| |
| printf(" TX packets:%u fragments:%u/%u bundles:%u/%u\n", |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_INFO]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED])); |
| |
| printf(" RX naks:%u defs:%u dups:%u\n", |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_DUPLICATES])); |
| |
| printf(" TX naks:%u acks:%u dups:%u\n", |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED])); |
| |
| printf(" Congestion link:%u Send queue max:%u avg:%u\n", |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]), |
| mnl_attr_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE])); |
| |
| return MNL_CB_OK; |
| } |
| |
| static int link_stat_show_cb(const struct nlmsghdr *nlh, void *data) |
| { |
| const char *name; |
| const char *link = data; |
| struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| struct nlattr *info[TIPC_NLA_MAX + 1] = {}; |
| struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1] = {}; |
| struct nlattr *prop[TIPC_NLA_PROP_MAX + 1] = {}; |
| struct nlattr *stats[TIPC_NLA_STATS_MAX + 1] = {}; |
| |
| mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); |
| if (!info[TIPC_NLA_LINK]) |
| return MNL_CB_ERROR; |
| |
| mnl_attr_parse_nested(info[TIPC_NLA_LINK], parse_attrs, attrs); |
| if (!attrs[TIPC_NLA_LINK_NAME] || !attrs[TIPC_NLA_LINK_PROP] || |
| !attrs[TIPC_NLA_LINK_STATS]) |
| return MNL_CB_ERROR; |
| |
| mnl_attr_parse_nested(attrs[TIPC_NLA_LINK_PROP], parse_attrs, prop); |
| mnl_attr_parse_nested(attrs[TIPC_NLA_LINK_STATS], parse_attrs, stats); |
| |
| name = mnl_attr_get_str(attrs[TIPC_NLA_LINK_NAME]); |
| |
| /* If a link is passed, skip all but that link */ |
| if (link && (strcmp(name, link) != 0)) |
| return MNL_CB_OK; |
| |
| if (attrs[TIPC_NLA_LINK_BROADCAST]) { |
| printf("Link <%s>\n", name); |
| return _show_bc_link_stat(prop, stats); |
| } |
| |
| printf("\nLink <%s>\n", name); |
| |
| return _show_link_stat(attrs, prop, stats); |
| } |
| |
| static void cmd_link_stat_show_help(struct cmdl *cmdl) |
| { |
| fprintf(stderr, "Usage: %s link stat show [ link LINK ]\n", |
| cmdl->argv[0]); |
| } |
| |
| static int cmd_link_stat_show(struct nlmsghdr *nlh, const struct cmd *cmd, |
| struct cmdl *cmdl, void *data) |
| { |
| char *link = NULL; |
| char buf[MNL_SOCKET_BUFFER_SIZE]; |
| struct opt *opt; |
| struct opt opts[] = { |
| { "link", NULL }, |
| { NULL } |
| }; |
| |
| if (help_flag) { |
| (cmd->help)(cmdl); |
| return -EINVAL; |
| } |
| |
| if (!(nlh = msg_init(buf, TIPC_NL_LINK_GET))) { |
| fprintf(stderr, "error, message initialisation failed\n"); |
| return -1; |
| } |
| |
| if (parse_opts(opts, cmdl) < 0) |
| return -EINVAL; |
| |
| if ((opt = get_opt(opts, "link"))) |
| link = opt->val; |
| |
| return msg_dumpit(nlh, link_stat_show_cb, link); |
| } |
| |
| static void cmd_link_stat_help(struct cmdl *cmdl) |
| { |
| fprintf(stderr, "Usage: %s link stat COMMAND [ARGS]\n\n" |
| "COMMANDS:\n" |
| " reset - Reset link statistics for link\n" |
| " show - Get link priority\n", |
| cmdl->argv[0]); |
| } |
| |
| static int cmd_link_stat(struct nlmsghdr *nlh, const struct cmd *cmd, |
| struct cmdl *cmdl, void *data) |
| { |
| const struct cmd cmds[] = { |
| { "reset", cmd_link_stat_reset, cmd_link_stat_reset_help }, |
| { "show", cmd_link_stat_show, cmd_link_stat_show_help }, |
| { NULL } |
| }; |
| |
| return run_cmd(nlh, cmd, cmds, cmdl, NULL); |
| } |
| |
| static void cmd_link_set_help(struct cmdl *cmdl) |
| { |
| fprintf(stderr, "Usage: %s link set PPROPERTY link LINK\n\n" |
| "PROPERTIES\n" |
| " tolerance TOLERANCE - Set link tolerance\n" |
| " priority PRIORITY - Set link priority\n" |
| " window WINDOW - Set link window\n", |
| cmdl->argv[0]); |
| } |
| |
| static int cmd_link_set_prop(struct nlmsghdr *nlh, const struct cmd *cmd, |
| struct cmdl *cmdl, void *data) |
| { |
| int val; |
| int prop; |
| char buf[MNL_SOCKET_BUFFER_SIZE]; |
| struct nlattr *props; |
| struct nlattr *attrs; |
| struct opt *opt; |
| struct opt opts[] = { |
| { "link", NULL }, |
| { NULL } |
| }; |
| |
| if (strcmp(cmd->cmd, "priority") == 0) |
| prop = TIPC_NLA_PROP_PRIO; |
| else if ((strcmp(cmd->cmd, "tolerance") == 0)) |
| prop = TIPC_NLA_PROP_TOL; |
| else if ((strcmp(cmd->cmd, "window") == 0)) |
| prop = TIPC_NLA_PROP_WIN; |
| else |
| return -EINVAL; |
| |
| if (help_flag) { |
| (cmd->help)(cmdl); |
| return -EINVAL; |
| } |
| |
| if (cmdl->optind >= cmdl->argc) { |
| fprintf(stderr, "error, missing value\n"); |
| return -EINVAL; |
| } |
| val = atoi(shift_cmdl(cmdl)); |
| |
| if (parse_opts(opts, cmdl) < 0) |
| return -EINVAL; |
| |
| if (!(nlh = msg_init(buf, TIPC_NL_LINK_SET))) { |
| fprintf(stderr, "error, message initialisation failed\n"); |
| return -1; |
| } |
| attrs = mnl_attr_nest_start(nlh, TIPC_NLA_LINK); |
| |
| if (!(opt = get_opt(opts, "link"))) { |
| fprintf(stderr, "error, missing link\n"); |
| return -EINVAL; |
| } |
| mnl_attr_put_strz(nlh, TIPC_NLA_LINK_NAME, opt->val); |
| |
| props = mnl_attr_nest_start(nlh, TIPC_NLA_LINK_PROP); |
| mnl_attr_put_u32(nlh, prop, val); |
| mnl_attr_nest_end(nlh, props); |
| |
| mnl_attr_nest_end(nlh, attrs); |
| |
| return msg_doit(nlh, link_get_cb, &prop); |
| |
| return 0; |
| } |
| |
| static int cmd_link_set(struct nlmsghdr *nlh, const struct cmd *cmd, |
| struct cmdl *cmdl, void *data) |
| { |
| const struct cmd cmds[] = { |
| { "priority", cmd_link_set_prop, cmd_link_set_help }, |
| { "tolerance", cmd_link_set_prop, cmd_link_set_help }, |
| { "window", cmd_link_set_prop, cmd_link_set_help }, |
| { NULL } |
| }; |
| |
| return run_cmd(nlh, cmd, cmds, cmdl, NULL); |
| } |
| |
| void cmd_link_help(struct cmdl *cmdl) |
| { |
| fprintf(stderr, |
| "Usage: %s link COMMAND [ARGS] ...\n" |
| "\n" |
| "COMMANDS\n" |
| " list - List links\n" |
| " get - Get various link properties\n" |
| " set - Set various link properties\n" |
| " statistics - Show or reset statistics\n", |
| cmdl->argv[0]); |
| } |
| |
| int cmd_link(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl, |
| void *data) |
| { |
| const struct cmd cmds[] = { |
| { "get", cmd_link_get, cmd_link_get_help }, |
| { "list", cmd_link_list, NULL }, |
| { "set", cmd_link_set, cmd_link_set_help }, |
| { "statistics", cmd_link_stat, cmd_link_stat_help }, |
| { NULL } |
| }; |
| |
| return run_cmd(nlh, cmd, cmds, cmdl, NULL); |
| } |