#include <net/if.h>
|
#include <errno.h>
|
#include <string.h>
|
|
#include <netlink/genl/genl.h>
|
#include <netlink/genl/family.h>
|
#include <netlink/genl/ctrl.h>
|
#include <netlink/msg.h>
|
#include <netlink/attr.h>
|
|
#include "nl80211.h"
|
#include "iw.h"
|
|
SECTION(survey);
|
|
static int print_survey_handler(struct nl_msg *msg, void *arg)
|
{
|
struct nlattr *tb[NL80211_ATTR_MAX + 1];
|
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
|
struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
|
char dev[20];
|
|
static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
|
[NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
|
[NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
|
};
|
|
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
|
genlmsg_attrlen(gnlh, 0), NULL);
|
|
if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev);
|
printf("Survey data from %s\n", dev);
|
|
if (!tb[NL80211_ATTR_SURVEY_INFO]) {
|
fprintf(stderr, "survey data missing!\n");
|
return NL_SKIP;
|
}
|
|
if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
|
tb[NL80211_ATTR_SURVEY_INFO],
|
survey_policy)) {
|
fprintf(stderr, "failed to parse nested attributes!\n");
|
return NL_SKIP;
|
}
|
|
if (sinfo[NL80211_SURVEY_INFO_FREQUENCY])
|
printf("\tfrequency:\t\t\t%u MHz%s\n",
|
nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]),
|
sinfo[NL80211_SURVEY_INFO_IN_USE] ? " [in use]" : "");
|
if (sinfo[NL80211_SURVEY_INFO_NOISE])
|
printf("\tnoise:\t\t\t\t%d dBm\n",
|
(int8_t)nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]));
|
if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME])
|
printf("\tchannel active time:\t\t%llu ms\n",
|
(unsigned long long)nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]));
|
if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY])
|
printf("\tchannel busy time:\t\t%llu ms\n",
|
(unsigned long long)nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]));
|
if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY])
|
printf("\textension channel busy time:\t%llu ms\n",
|
(unsigned long long)nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY]));
|
if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX])
|
printf("\tchannel receive time:\t\t%llu ms\n",
|
(unsigned long long)nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]));
|
if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX])
|
printf("\tchannel transmit time:\t\t%llu ms\n",
|
(unsigned long long)nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]));
|
return NL_SKIP;
|
}
|
|
static int handle_survey_dump(struct nl80211_state *state,
|
struct nl_cb *cb,
|
struct nl_msg *msg,
|
int argc, char **argv,
|
enum id_input id)
|
{
|
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_survey_handler, NULL);
|
return 0;
|
}
|
COMMAND(survey, dump, NULL,
|
NL80211_CMD_GET_SURVEY, NLM_F_DUMP, CIB_NETDEV, handle_survey_dump,
|
"List all gathered channel survey data");
|
