nexmon – Blame information for rev 1

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1 office 1 #include <net/if.h>
2 #include <errno.h>
3 #include <string.h>
4  
5 #include <netlink/genl/genl.h>
6 #include <netlink/genl/family.h>
7 #include <netlink/genl/ctrl.h>
8 #include <netlink/msg.h>
9 #include <netlink/attr.h>
10  
11 #include "nl80211.h"
12 #include "iw.h"
13  
14 SECTION(survey);
15  
16 static int print_survey_handler(struct nl_msg *msg, void *arg)
17 {
18 struct nlattr *tb[NL80211_ATTR_MAX + 1];
19 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
20 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
21 char dev[20];
22  
23 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
24 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
25 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
26 };
27  
28 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
29 genlmsg_attrlen(gnlh, 0), NULL);
30  
31 if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev);
32 printf("Survey data from %s\n", dev);
33  
34 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
35 fprintf(stderr, "survey data missing!\n");
36 return NL_SKIP;
37 }
38  
39 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
40 tb[NL80211_ATTR_SURVEY_INFO],
41 survey_policy)) {
42 fprintf(stderr, "failed to parse nested attributes!\n");
43 return NL_SKIP;
44 }
45  
46 if (sinfo[NL80211_SURVEY_INFO_FREQUENCY])
47 printf("\tfrequency:\t\t\t%u MHz%s\n",
48 nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]),
49 sinfo[NL80211_SURVEY_INFO_IN_USE] ? " [in use]" : "");
50 if (sinfo[NL80211_SURVEY_INFO_NOISE])
51 printf("\tnoise:\t\t\t\t%d dBm\n",
52 (int8_t)nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]));
53 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME])
54 printf("\tchannel active time:\t\t%llu ms\n",
55 (unsigned long long)nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]));
56 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY])
57 printf("\tchannel busy time:\t\t%llu ms\n",
58 (unsigned long long)nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]));
59 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY])
60 printf("\textension channel busy time:\t%llu ms\n",
61 (unsigned long long)nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY]));
62 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX])
63 printf("\tchannel receive time:\t\t%llu ms\n",
64 (unsigned long long)nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]));
65 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX])
66 printf("\tchannel transmit time:\t\t%llu ms\n",
67 (unsigned long long)nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]));
68 return NL_SKIP;
69 }
70  
71 static int handle_survey_dump(struct nl80211_state *state,
72 struct nl_cb *cb,
73 struct nl_msg *msg,
74 int argc, char **argv,
75 enum id_input id)
76 {
77 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_survey_handler, NULL);
78 return 0;
79 }
80 COMMAND(survey, dump, NULL,
81 NL80211_CMD_GET_SURVEY, NLM_F_DUMP, CIB_NETDEV, handle_survey_dump,
82 "List all gathered channel survey data");
83