This adds printing of TXQ statistics for stations and interfaces when
supplied by the kernel. For stations, another section is added when verbose
mode is enabled; for interfaces, the multicast queue information is always
printed when available.
This is the information also available through debugfs in
/sys/kernel/debug/ieee80211/phyX/netdev:Y/aqm and
/sys/kernel/debug/ieee80211/phyX/netdev:Y/stations/*/aqm.
Sample output:
$ iw dev wlp2s0 station dump -v
Station xx:xx:xx:xx:xx:xx (on wlp2s0)
[...]
TXQs:
TID qsz-byt qsz-pkt flows drops marks overlmt hashcol tx-bytes tx-packets
0 0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0 0 0
3 0 0 0 0 0 0 0 0 0
4 0 0 0 0 0 0 0 0 0
5 0 0 0 0 0 0 0 0 0
6 0 0 0 0 0 0 0 0 0
7 0 0 0 0 0 0 0 0 0
8 0 0 0 0 0 0 0 0 0
9 0 0 0 0 0 0 0 0 0
10 0 0 0 0 0 0 0 0 0
11 0 0 0 0 0 0 0 0 0
12 0 0 0 0 0 0 0 0 0
13 0 0 0 0 0 0 0 0 0
14 0 0 0 0 0 0 0 0 0
15 0 0 0 0 0 0 0 0 0
[...]
$ iw dev wlp2s0 info
Interface wlp2s0
ifindex 9
wdev 0x1
addr xx:xx:xx:xx:xx:xx
type AP
wiphy 0
channel 165 (5825 MHz), width: 20 MHz, center1: 5825 MHz
txpower 24.00 dBm
multicast TXQ:
qsz-byt qsz-pkt flows drops marks overlmt hashcol tx-bytes tx-packets
0 0 72 0 0 0 0 7380 72
Signed-off-by: Toke Høiland-Jørgensen <toke@xxxxxxx>
---
v2:
- Correctly handle variable indent of 'iw dev' output
interface.c | 6 +++++
iw.h | 2 ++
station.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 95 insertions(+), 1 deletion(-)
diff --git a/interface.c b/interface.c
index a19c83f..712bbdc 100644
--- a/interface.c
+++ b/interface.c
@@ -441,6 +441,12 @@ static int print_iface_handler(struct nl_msg *msg, void *arg)
indent, txp / 100, txp % 100);
}
+ if (tb_msg[NL80211_ATTR_TXQ_STATS]) {
+ char buf[150];
+ parse_txq_stats(buf, sizeof(buf), tb_msg[NL80211_ATTR_TXQ_STATS], 1, -1, indent);
+ printf("%s\tmulticast TXQ:%s\n", indent, buf);
+ }
+
return NL_SKIP;
}
diff --git a/iw.h b/iw.h
index ee7ca20..47aa27d 100644
--- a/iw.h
+++ b/iw.h
@@ -183,6 +183,8 @@ unsigned char *parse_hex(char *hex, size_t *outlen);
int parse_keys(struct nl_msg *msg, char **argv, int argc);
int parse_freqchan(struct chandef *chandef, bool chan, int argc, char **argv, int *parsed);
enum nl80211_chan_width str_to_bw(const char *str);
+int parse_txq_stats(char *buf, int buflen, struct nlattr *tid_stats_attr, int header,
+ int tid, const char *indent);
int put_chandef(struct nl_msg *msg, struct chandef *chandef);
void print_ht_mcs(const __u8 *mcs);
diff --git a/station.c b/station.c
index f836d0a..0d2c1ba 100644
--- a/station.c
+++ b/station.c
@@ -43,6 +43,79 @@ static void print_power_mode(struct nlattr *a)
}
}
+int parse_txq_stats(char *buf, int buflen, struct nlattr *tid_stats_attr, int header,
+ int tid, const char *indent)
+{
+ struct nlattr *txqstats_info[NL80211_TXQ_STATS_MAX + 1], *txqinfo;
+ static struct nla_policy txqstats_policy[NL80211_TXQ_STATS_MAX + 1] = {
+ [NL80211_TXQ_STATS_BACKLOG_BYTES] = { .type = NLA_U32 },
+ [NL80211_TXQ_STATS_BACKLOG_PACKETS] = { .type = NLA_U32 },
+ [NL80211_TXQ_STATS_FLOWS] = { .type = NLA_U32 },
+ [NL80211_TXQ_STATS_DROPS] = { .type = NLA_U32 },
+ [NL80211_TXQ_STATS_ECN_MARKS] = { .type = NLA_U32 },
+ [NL80211_TXQ_STATS_OVERLIMIT] = { .type = NLA_U32 },
+ [NL80211_TXQ_STATS_COLLISIONS] = { .type = NLA_U32 },
+ [NL80211_TXQ_STATS_TX_BYTES] = { .type = NLA_U32 },
+ [NL80211_TXQ_STATS_TX_PACKETS] = { .type = NLA_U32 },
+ };
+ char *pos = buf;
+ if (nla_parse_nested(txqstats_info, NL80211_TXQ_STATS_MAX, tid_stats_attr,
+ txqstats_policy)) {
+ printf("failed to parse nested TXQ stats attributes!");
+ return 0;
+ }
+
+ if (header)
+ pos += snprintf(buf, buflen, "\n%s\t%s\tqsz-byt\t"
+ "qsz-pkt\tflows\tdrops\tmarks\toverlmt\t"
+ "hashcol\ttx-bytes\ttx-packets", indent,
+ tid >= 0 ? "TID" : "");
+
+ pos += snprintf(pos, buflen - (pos - buf), "\n%s\t", indent);
+ if (tid >= 0)
+ pos += snprintf(pos, buflen - (pos - buf), "%d", tid);
+
+
+ txqinfo = txqstats_info[NL80211_TXQ_STATS_BACKLOG_BYTES];
+ if (txqinfo)
+ pos += snprintf(pos, buflen - (pos - buf), "\t%u",
+ nla_get_u32(txqinfo));
+ txqinfo = txqstats_info[NL80211_TXQ_STATS_BACKLOG_PACKETS];
+ if (txqinfo)
+ pos += snprintf(pos, buflen - (pos - buf), "\t%u",
+ nla_get_u32(txqinfo));
+ txqinfo = txqstats_info[NL80211_TXQ_STATS_FLOWS];
+ if (txqinfo)
+ pos += snprintf(pos, buflen - (pos - buf), "\t%u",
+ nla_get_u32(txqinfo));
+ txqinfo = txqstats_info[NL80211_TXQ_STATS_DROPS];
+ if (txqinfo)
+ pos += snprintf(pos, buflen - (pos - buf), "\t%u",
+ nla_get_u32(txqinfo));
+ txqinfo = txqstats_info[NL80211_TXQ_STATS_ECN_MARKS];
+ if (txqinfo)
+ pos += snprintf(pos, buflen - (pos - buf), "\t%u",
+ nla_get_u32(txqinfo));
+ txqinfo = txqstats_info[NL80211_TXQ_STATS_OVERLIMIT];
+ if (txqinfo)
+ pos += snprintf(pos, buflen - (pos - buf), "\t%u",
+ nla_get_u32(txqinfo));
+ txqinfo = txqstats_info[NL80211_TXQ_STATS_COLLISIONS];
+ if (txqinfo)
+ pos += snprintf(pos, buflen - (pos - buf), "\t%u",
+ nla_get_u32(txqinfo));
+ txqinfo = txqstats_info[NL80211_TXQ_STATS_TX_BYTES];
+ if (txqinfo)
+ pos += snprintf(pos, buflen - (pos - buf), "\t%u",
+ nla_get_u32(txqinfo));
+ txqinfo = txqstats_info[NL80211_TXQ_STATS_TX_PACKETS];
+ if (txqinfo)
+ pos += snprintf(pos, buflen - (pos - buf), "\t\t%u",
+ nla_get_u32(txqinfo));
+
+ return pos - buf;
+
+}
void parse_tid_stats(struct nlattr *tid_stats_attr)
{
struct nlattr *stats_info[NL80211_TID_STATS_MAX + 1], *tidattr, *info;
@@ -51,8 +124,11 @@ void parse_tid_stats(struct nlattr *tid_stats_attr)
[NL80211_TID_STATS_TX_MSDU] = { .type = NLA_U64 },
[NL80211_TID_STATS_TX_MSDU_RETRIES] = { .type = NLA_U64 },
[NL80211_TID_STATS_TX_MSDU_FAILED] = { .type = NLA_U64 },
+ [NL80211_TID_STATS_TXQ_STATS] = { .type = NLA_NESTED },
};
int rem, i = 0;
+ char txqbuf[2000] = {}, *pos = txqbuf;
+ int buflen = sizeof(txqbuf), foundtxq = 0;
printf("\n\tMSDU:\n\t\tTID\trx\ttx\ttx retries\ttx failed");
nla_for_each_nested(tidattr, tid_stats_attr, rem) {
@@ -61,7 +137,7 @@ void parse_tid_stats(struct nlattr *tid_stats_attr)
printf("failed to parse nested stats attributes!");
return;
}
- printf("\n\t\t%d", i++);
+ printf("\n\t\t%d", i);
info = stats_info[NL80211_TID_STATS_RX_MSDU];
if (info)
printf("\t%llu", (unsigned long long)nla_get_u64(info));
@@ -74,7 +150,17 @@ void parse_tid_stats(struct nlattr *tid_stats_attr)
info = stats_info[NL80211_TID_STATS_TX_MSDU_FAILED];
if (info)
printf("\t\t%llu", (unsigned long long)nla_get_u64(info));
+ info = stats_info[NL80211_TID_STATS_TXQ_STATS];
+ if (info) {
+ pos += parse_txq_stats(pos, buflen - (pos - txqbuf), info, !foundtxq, i, "\t");
+ foundtxq = 1;
+ }
+
+ i++;
}
+
+ if (foundtxq)
+ printf("\n\tTXQs:%s", txqbuf);
}
void parse_bss_param(struct nlattr *bss_param_attr)
--
2.16.2
