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