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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* media.c TIPC link functionality.
*
* 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/genetlink.h>
#include "cmdl.h"
#include "msg.h"
#include "media.h"
static int media_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_MEDIA_MAX + 1] = {};
mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
if (!info[TIPC_NLA_MEDIA])
return MNL_CB_ERROR;
mnl_attr_parse_nested(info[TIPC_NLA_MEDIA], parse_attrs, attrs);
if (!attrs[TIPC_NLA_MEDIA_NAME])
return MNL_CB_ERROR;
printf("%s\n", mnl_attr_get_str(attrs[TIPC_NLA_MEDIA_NAME]));
return MNL_CB_OK;
}
static int cmd_media_list(struct nlmsghdr *nlh, const struct cmd *cmd,
struct cmdl *cmdl, void *data)
{
if (help_flag) {
fprintf(stderr, "Usage: %s media list\n", cmdl->argv[0]);
return -EINVAL;
}
nlh = msg_init(TIPC_NL_MEDIA_GET);
if (!nlh) {
fprintf(stderr, "error, message initialisation failed\n");
return -1;
}
return msg_dumpit(nlh, media_list_cb, NULL);
}
static int media_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_MEDIA_MAX + 1] = {};
struct nlattr *props[TIPC_NLA_PROP_MAX + 1] = {};
mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
if (!info[TIPC_NLA_MEDIA])
return MNL_CB_ERROR;
mnl_attr_parse_nested(info[TIPC_NLA_MEDIA], parse_attrs, attrs);
if (!attrs[TIPC_NLA_MEDIA_PROP])
return MNL_CB_ERROR;
mnl_attr_parse_nested(attrs[TIPC_NLA_MEDIA_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_media_get_prop(struct nlmsghdr *nlh, const struct cmd *cmd,
struct cmdl *cmdl, void *data)
{
int prop;
struct nlattr *nest;
struct opt *opt;
struct opt opts[] = {
{ "media", OPT_KEYVAL, 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 if ((strcmp(cmd->cmd, "mtu") == 0))
prop = TIPC_NLA_PROP_MTU;
else
return -EINVAL;
if (help_flag) {
(cmd->help)(cmdl);
return -EINVAL;
}
if (parse_opts(opts, cmdl) < 0)
return -EINVAL;
nlh = msg_init(TIPC_NL_MEDIA_GET);
if (!nlh) {
fprintf(stderr, "error, message initialisation failed\n");
return -1;
}
if (!(opt = get_opt(opts, "media"))) {
fprintf(stderr, "error, missing media\n");
return -EINVAL;
}
if ((prop == TIPC_NLA_PROP_MTU) &&
(strcmp(opt->val, "udp"))) {
fprintf(stderr, "error, not supported for media\n");
return -EINVAL;
}
nest = mnl_attr_nest_start(nlh, TIPC_NLA_MEDIA);
mnl_attr_put_strz(nlh, TIPC_NLA_MEDIA_NAME, opt->val);
mnl_attr_nest_end(nlh, nest);
return msg_doit(nlh, media_get_cb, &prop);
}
static void cmd_media_get_help(struct cmdl *cmdl)
{
fprintf(stderr, "Usage: %s media get PPROPERTY media MEDIA\n\n"
"PROPERTIES\n"
" tolerance - Get media tolerance\n"
" priority - Get media priority\n"
" window - Get media window\n"
" mtu - Get media mtu\n",
cmdl->argv[0]);
}
static int cmd_media_get(struct nlmsghdr *nlh, const struct cmd *cmd,
struct cmdl *cmdl, void *data)
{
const struct cmd cmds[] = {
{ "priority", cmd_media_get_prop, cmd_media_get_help },
{ "tolerance", cmd_media_get_prop, cmd_media_get_help },
{ "window", cmd_media_get_prop, cmd_media_get_help },
{ "mtu", cmd_media_get_prop, cmd_media_get_help },
{ NULL }
};
return run_cmd(nlh, cmd, cmds, cmdl, NULL);
}
static void cmd_media_set_help(struct cmdl *cmdl)
{
fprintf(stderr, "Usage: %s media set PPROPERTY media MEDIA\n\n"
"PROPERTIES\n"
" tolerance TOLERANCE - Set media tolerance\n"
" priority PRIORITY - Set media priority\n"
" window WINDOW - Set media window\n"
" mtu MTU - Set media mtu\n",
cmdl->argv[0]);
}
static int cmd_media_set_prop(struct nlmsghdr *nlh, const struct cmd *cmd,
struct cmdl *cmdl, void *data)
{
int val;
int prop;
struct nlattr *props;
struct nlattr *attrs;
struct opt *opt;
struct opt opts[] = {
{ "media", OPT_KEYVAL, 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 if ((strcmp(cmd->cmd, "mtu") == 0))
prop = TIPC_NLA_PROP_MTU;
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;
nlh = msg_init(TIPC_NL_MEDIA_SET);
if (!nlh) {
fprintf(stderr, "error, message initialisation failed\n");
return -1;
}
attrs = mnl_attr_nest_start(nlh, TIPC_NLA_MEDIA);
if (!(opt = get_opt(opts, "media"))) {
fprintf(stderr, "error, missing media\n");
return -EINVAL;
}
if ((prop == TIPC_NLA_PROP_MTU) &&
(strcmp(opt->val, "udp"))) {
fprintf(stderr, "error, not supported for media\n");
return -EINVAL;
}
mnl_attr_put_strz(nlh, TIPC_NLA_MEDIA_NAME, opt->val);
props = mnl_attr_nest_start(nlh, TIPC_NLA_MEDIA_PROP);
mnl_attr_put_u32(nlh, prop, val);
mnl_attr_nest_end(nlh, props);
mnl_attr_nest_end(nlh, attrs);
return msg_doit(nlh, NULL, NULL);
}
static int cmd_media_set(struct nlmsghdr *nlh, const struct cmd *cmd,
struct cmdl *cmdl, void *data)
{
const struct cmd cmds[] = {
{ "priority", cmd_media_set_prop, cmd_media_set_help },
{ "tolerance", cmd_media_set_prop, cmd_media_set_help },
{ "window", cmd_media_set_prop, cmd_media_set_help },
{ "mtu", cmd_media_set_prop, cmd_media_set_help },
{ NULL }
};
return run_cmd(nlh, cmd, cmds, cmdl, NULL);
}
void cmd_media_help(struct cmdl *cmdl)
{
fprintf(stderr,
"Usage: %s media COMMAND [ARGS] ...\n"
"\n"
"Commands:\n"
" list - List active media types\n"
" get - Get various media properties\n"
" set - Set various media properties\n",
cmdl->argv[0]);
}
int cmd_media(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
void *data)
{
const struct cmd cmds[] = {
{ "get", cmd_media_get, cmd_media_get_help },
{ "list", cmd_media_list, NULL },
{ "set", cmd_media_set, cmd_media_set_help },
{ NULL }
};
return run_cmd(nlh, cmd, cmds, cmdl, NULL);
}
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