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