iw: dump station per-chain signal strength information

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

diff --git a/station.c b/station.c
index 5a161ebfd2cc68562fc03e2a87f81e0846d42ca3..07acdbc7cba71d5d39cb719198ca031ff776ec3b 100644 (file)
--- a/station.c
+++ b/station.c
@@ -91,6 +91,33 @@ void parse_bitrate(struct nlattr *bitrate_attr, char *buf, int buflen)
                                " VHT-NSS %d", nla_get_u8(rinfo[NL80211_RATE_INFO_VHT_NSS]));
 }
 
+static char *get_chain_signal(struct nlattr *attr_list)
+{
+       struct nlattr *attr;
+       static char buf[64];
+       char *cur = buf;
+       int i = 0, rem;
+       const char *prefix;
+
+       if (!attr_list)
+               return "";
+
+       nla_for_each_nested(attr, attr_list, rem) {
+               if (i++ > 0)
+                       prefix = ", ";
+               else
+                       prefix = "[";
+
+               cur += snprintf(cur, sizeof(buf) - (cur - buf), "%s%d", prefix,
+                               (int8_t) nla_get_u8(attr));
+       }
+
+       if (i)
+               snprintf(cur, sizeof(buf) - (cur - buf), "] ");
+
+       return buf;
+}
+
 static int print_sta_handler(struct nl_msg *msg, void *arg)
 {
        struct nlattr *tb[NL80211_ATTR_MAX + 1];
@@ -118,7 +145,10 @@ static int print_sta_handler(struct nl_msg *msg, void *arg)
                [NL80211_STA_INFO_LOCAL_PM] = { .type = NLA_U32},
                [NL80211_STA_INFO_PEER_PM] = { .type = NLA_U32},
                [NL80211_STA_INFO_NONPEER_PM] = { .type = NLA_U32},
+               [NL80211_STA_INFO_CHAIN_SIGNAL] = { .type = NLA_NESTED },
+               [NL80211_STA_INFO_CHAIN_SIGNAL_AVG] = { .type = NLA_NESTED },
        };
+       char *chain;
 
        nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
                  genlmsg_attrlen(gnlh, 0), NULL);
@@ -165,12 +195,19 @@ static int print_sta_handler(struct nl_msg *msg, void *arg)
        if (sinfo[NL80211_STA_INFO_TX_FAILED])
                printf("\n\ttx failed:\t%u",
                        nla_get_u32(sinfo[NL80211_STA_INFO_TX_FAILED]));
+
+       chain = get_chain_signal(sinfo[NL80211_STA_INFO_CHAIN_SIGNAL]);
        if (sinfo[NL80211_STA_INFO_SIGNAL])
-               printf("\n\tsignal:  \t%d dBm",
-                       (int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]));
+               printf("\n\tsignal:  \t%d %sdBm",
+                       (int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]),
+                       chain);
+
+       chain = get_chain_signal(sinfo[NL80211_STA_INFO_CHAIN_SIGNAL_AVG]);
        if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
-               printf("\n\tsignal avg:\t%d dBm",
-                       (int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]));
+               printf("\n\tsignal avg:\t%d %sdBm",
+                       (int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]),
+                       chain);
+
        if (sinfo[NL80211_STA_INFO_T_OFFSET])
                printf("\n\tToffset:\t%lld us",
                        (unsigned long long)nla_get_u64(sinfo[NL80211_STA_INFO_T_OFFSET]));