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adds sysctl knobs to show rate statistics that it could be useful to

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debug slow TX speed.
This commit is contained in:
Weongyo Jeong 2010-01-27 19:43:14 +00:00
parent 678a6d7a4a
commit 1d3d5952a3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=203087
2 changed files with 59 additions and 0 deletions
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53
sys/dev/usb/wlan/if_urtw.c
View File

@ -762,6 +762,7 @@ static int urtw_compute_txtime(uint16_t, uint16_t, uint8_t,
uint8_t);
static void urtw_updateslot(struct ifnet *);
static void urtw_updateslottask(void *, int);
static void urtw_sysctl_node(struct urtw_softc *);
static int
urtw_match(device_t dev)
@ -906,6 +907,8 @@ urtw_attach(device_t dev)
&sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
URTW_RX_RADIOTAP_PRESENT);
urtw_sysctl_node(sc);
if (bootverbose)
ieee80211_announce(ic);
return (0);
@ -1703,6 +1706,8 @@ urtw_tx_start(struct urtw_softc *sc, struct ieee80211_node *ni, struct mbuf *m0,
rate = urtw_rtl2rate(sc->sc_currate);
}
sc->sc_stats.txrates[sc->sc_currate]++;
if (IEEE80211_IS_MULTICAST(wh->i_addr1))
txdur = pkttime = urtw_compute_txtime(m0->m_pkthdr.len +
IEEE80211_CRC_LEN, rate, 0, 0);
@ -4372,6 +4377,54 @@ urtw_updateslottask(void *arg, int pending)
URTW_UNLOCK(sc);
}
static void
urtw_sysctl_node(struct urtw_softc *sc)
{
#define URTW_SYSCTL_STAT_ADD32(c, h, n, p, d) \
SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
struct sysctl_ctx_list *ctx;
struct sysctl_oid_list *child, *parent;
struct sysctl_oid *tree;
struct urtw_stats *stats = &sc->sc_stats;
ctx = device_get_sysctl_ctx(sc->sc_dev);
child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->sc_dev));
tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
NULL, "URTW statistics");
parent = SYSCTL_CHILDREN(tree);
/* Tx statistics. */
tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
NULL, "Tx MAC statistics");
child = SYSCTL_CHILDREN(tree);
URTW_SYSCTL_STAT_ADD32(ctx, child, "1m", &stats->txrates[0],
"1 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "2m", &stats->txrates[1],
"2 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "5.5m", &stats->txrates[2],
"5.5 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "6m", &stats->txrates[4],
"6 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "9m", &stats->txrates[5],
"9 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "11m", &stats->txrates[3],
"11 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "12m", &stats->txrates[6],
"12 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "18m", &stats->txrates[7],
"18 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "24m", &stats->txrates[8],
"24 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "36m", &stats->txrates[9],
"36 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "48m", &stats->txrates[10],
"48 Mbit/s");
URTW_SYSCTL_STAT_ADD32(ctx, child, "54m", &stats->txrates[11],
"54 Mbit/s");
#undef URTW_SYSCTL_STAT_ADD32
}
static device_method_t urtw_methods[] = {
DEVMETHOD(device_probe, urtw_match),
DEVMETHOD(device_attach, urtw_attach),

6
sys/dev/usb/wlan/if_urtwvar.h
View File

@ -81,6 +81,10 @@ struct urtw_tx_radiotap_header {
((1 << IEEE80211_RADIOTAP_FLAGS) | \
(1 << IEEE80211_RADIOTAP_CHANNEL))
struct urtw_stats {
unsigned int txrates[12];
};
struct urtw_vap {
struct ieee80211vap vap;
int (*newstate)(struct ieee80211vap *,
@ -169,6 +173,8 @@ struct urtw_softc {
uint64_t sc_txstatus; /* only for 8187B */
struct task sc_updateslot_task;
struct urtw_stats sc_stats;
struct urtw_rx_radiotap_header sc_rxtap;
int sc_rxtap_len;
struct urtw_tx_radiotap_header sc_txtap;