mirror of
https://git.FreeBSD.org/src.git
synced 2025-01-11 14:10:34 +00:00
modify the rssi logic a bit to actually return a useful rssi.
The fullmac firmware doesn't seem to populate a useful rssi indicator in the RX descriptor, so if one plotted said values, they'd basically look like garbage. The reference driver implements a "get current rssi" firmware command which I guess is really meant for station operation only (as hostap operation would need rssi per station, not a single firmware read.) So: * populate sc_currssi during each calibration run; * use this in the RX path instead of trying to reconstruct the RSSI value and passing it around as a pointer; * do up a quick hack to map the rssi hardware value to some useful signal level; * the survey results provide an RSSI value between 0..100, so just do another quick hack to map it into some usefulish signal level; * supply a faked noise floor - I haven't yet found how to pull it out of the firmware. The scan results and the station RSSI information is now more useful for indicating signal strength / distance.
This commit is contained in:
Adrian Chadd
parent
c5af5ada34
commit
a3767659f0
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=288414
@ -203,17 +203,18 @@ static void rsu_delete_key(struct rsu_softc *, const struct ieee80211_key *);
|
||||
static int rsu_site_survey(struct rsu_softc *, struct ieee80211vap *);
|
||||
static int rsu_join_bss(struct rsu_softc *, struct ieee80211_node *);
|
||||
static int rsu_disconnect(struct rsu_softc *);
|
||||
static int rsu_hwrssi_to_rssi(struct rsu_softc *, int hw_rssi);
|
||||
static void rsu_event_survey(struct rsu_softc *, uint8_t *, int);
|
||||
static void rsu_event_join_bss(struct rsu_softc *, uint8_t *, int);
|
||||
static void rsu_rx_event(struct rsu_softc *, uint8_t, uint8_t *, int);
|
||||
static void rsu_rx_multi_event(struct rsu_softc *, uint8_t *, int);
|
||||
#if 0
|
||||
static int8_t rsu_get_rssi(struct rsu_softc *, int, void *);
|
||||
#endif
|
||||
static struct mbuf * rsu_rx_frame(struct rsu_softc *, uint8_t *, int);
|
||||
static struct mbuf * rsu_rx_multi_frame(struct rsu_softc *, uint8_t *, int);
|
||||
static struct mbuf *
|
||||
rsu_rx_frame(struct rsu_softc *, uint8_t *, int, int *);
|
||||
static struct mbuf *
|
||||
rsu_rx_multi_frame(struct rsu_softc *, uint8_t *, int, int *);
|
||||
static struct mbuf *
|
||||
rsu_rxeof(struct usb_xfer *, struct rsu_data *, int *);
|
||||
rsu_rxeof(struct usb_xfer *, struct rsu_data *);
|
||||
static void rsu_txeof(struct usb_xfer *, struct rsu_data *);
|
||||
static int rsu_raw_xmit(struct ieee80211_node *, struct mbuf *,
|
||||
const struct ieee80211_bpf_params *);
|
||||
@ -1082,7 +1083,9 @@ static void
|
||||
rsu_calib_task(void *arg, int pending __unused)
|
||||
{
|
||||
struct rsu_softc *sc = arg;
|
||||
#ifdef notyet
|
||||
uint32_t reg;
|
||||
#endif
|
||||
|
||||
RSU_DPRINTF(sc, RSU_DEBUG_CALIB, "%s: running calibration task\n",
|
||||
__func__);
|
||||
@ -1100,9 +1103,10 @@ rsu_calib_task(void *arg, int pending __unused)
|
||||
#endif
|
||||
/* Read current signal level. */
|
||||
if (rsu_fw_iocmd(sc, 0xf4000001) == 0) {
|
||||
reg = rsu_read_4(sc, R92S_IOCMD_DATA);
|
||||
RSU_DPRINTF(sc, RSU_DEBUG_CALIB, "%s: RSSI=%d%%\n",
|
||||
__func__, reg >> 4);
|
||||
sc->sc_currssi = rsu_read_4(sc, R92S_IOCMD_DATA);
|
||||
RSU_DPRINTF(sc, RSU_DEBUG_CALIB, "%s: RSSI=%d (%d)\n",
|
||||
__func__, sc->sc_currssi,
|
||||
rsu_hwrssi_to_rssi(sc, sc->sc_currssi));
|
||||
}
|
||||
if (sc->sc_calibrating)
|
||||
taskqueue_enqueue_timeout(taskqueue_thread, &sc->calib_task, hz);
|
||||
@ -1433,6 +1437,24 @@ rsu_disconnect(struct rsu_softc *sc)
|
||||
return (rsu_fw_cmd(sc, R92S_CMD_DISCONNECT, &zero, sizeof(zero)));
|
||||
}
|
||||
|
||||
/*
|
||||
* Map the hardware provided RSSI value to a signal level.
|
||||
* For the most part it's just something we divide by and cap
|
||||
* so it doesn't overflow the representation by net80211.
|
||||
*/
|
||||
static int
|
||||
rsu_hwrssi_to_rssi(struct rsu_softc *sc, int hw_rssi)
|
||||
{
|
||||
int v;
|
||||
|
||||
if (hw_rssi == 0)
|
||||
return (0);
|
||||
v = hw_rssi >> 4;
|
||||
if (v > 80)
|
||||
v = 80;
|
||||
return (v);
|
||||
}
|
||||
|
||||
static void
|
||||
rsu_event_survey(struct rsu_softc *sc, uint8_t *buf, int len)
|
||||
{
|
||||
@ -1486,8 +1508,9 @@ rsu_event_survey(struct rsu_softc *sc, uint8_t *buf, int len)
|
||||
rxs.r_flags |= IEEE80211_R_NF | IEEE80211_R_RSSI;
|
||||
rxs.c_ieee = le32toh(bss->config.dsconfig);
|
||||
rxs.c_freq = ieee80211_ieee2mhz(rxs.c_ieee, IEEE80211_CHAN_2GHZ);
|
||||
rxs.rssi = le32toh(bss->rssi);
|
||||
rxs.nf = 0; /* XXX */
|
||||
/* This is a number from 0..100; so let's just divide it down a bit */
|
||||
rxs.rssi = le32toh(bss->rssi) / 2;
|
||||
rxs.nf = -96;
|
||||
|
||||
/* XXX avoid a LOR */
|
||||
RSU_UNLOCK(sc);
|
||||
@ -1557,7 +1580,7 @@ rsu_event_addba_req_report(struct rsu_softc *sc, uint8_t *buf, int len)
|
||||
if (vap == NULL)
|
||||
return;
|
||||
|
||||
device_printf(sc->sc_dev, "%s: mac=%s, tid=%d, ssn=%d\n",
|
||||
RSU_DPRINTF(sc, RSU_DEBUG_AMPDU, "%s: mac=%s, tid=%d, ssn=%d\n",
|
||||
__func__,
|
||||
ether_sprintf(ba->mac_addr),
|
||||
(int) ba->tid,
|
||||
@ -1670,6 +1693,7 @@ rsu_rx_multi_event(struct rsu_softc *sc, uint8_t *buf, int len)
|
||||
}
|
||||
}
|
||||
|
||||
#if 0
|
||||
static int8_t
|
||||
rsu_get_rssi(struct rsu_softc *sc, int rate, void *physt)
|
||||
{
|
||||
@ -1690,9 +1714,10 @@ rsu_get_rssi(struct rsu_softc *sc, int rate, void *physt)
|
||||
}
|
||||
return (rssi);
|
||||
}
|
||||
#endif
|
||||
|
||||
static struct mbuf *
|
||||
rsu_rx_frame(struct rsu_softc *sc, uint8_t *buf, int pktlen, int *rssi)
|
||||
rsu_rx_frame(struct rsu_softc *sc, uint8_t *buf, int pktlen)
|
||||
{
|
||||
struct ieee80211com *ic = &sc->sc_ic;
|
||||
struct ieee80211_frame *wh;
|
||||
@ -1718,16 +1743,17 @@ rsu_rx_frame(struct rsu_softc *sc, uint8_t *buf, int pktlen, int *rssi)
|
||||
rate = MS(rxdw3, R92S_RXDW3_RATE);
|
||||
infosz = MS(rxdw0, R92S_RXDW0_INFOSZ) * 8;
|
||||
|
||||
#if 0
|
||||
/* Get RSSI from PHY status descriptor if present. */
|
||||
if (infosz != 0)
|
||||
*rssi = rsu_get_rssi(sc, rate, &stat[1]);
|
||||
else
|
||||
*rssi = 0;
|
||||
#endif
|
||||
|
||||
RSU_DPRINTF(sc, RSU_DEBUG_RX,
|
||||
"%s: Rx frame len=%d rate=%d infosz=%d rssi=%d\n",
|
||||
__func__,
|
||||
pktlen, rate, infosz, *rssi);
|
||||
"%s: Rx frame len=%d rate=%d infosz=%d\n",
|
||||
__func__, pktlen, rate, infosz);
|
||||
|
||||
m = m_get2(pktlen, M_NOWAIT, MT_DATA, M_PKTHDR);
|
||||
if (__predict_false(m == NULL)) {
|
||||
@ -1769,7 +1795,11 @@ rsu_rx_frame(struct rsu_softc *sc, uint8_t *buf, int pktlen, int *rssi)
|
||||
/* Bit 7 set means HT MCS instead of rate. */
|
||||
tap->wr_rate = 0x80 | (rate - 12);
|
||||
}
|
||||
#if 0
|
||||
tap->wr_dbm_antsignal = *rssi;
|
||||
#endif
|
||||
/* XXX not nice */
|
||||
tap->wr_dbm_antsignal = rsu_hwrssi_to_rssi(sc, sc->sc_currssi);
|
||||
tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
|
||||
tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
|
||||
}
|
||||
@ -1778,7 +1808,7 @@ rsu_rx_frame(struct rsu_softc *sc, uint8_t *buf, int pktlen, int *rssi)
|
||||
}
|
||||
|
||||
static struct mbuf *
|
||||
rsu_rx_multi_frame(struct rsu_softc *sc, uint8_t *buf, int len, int *rssi)
|
||||
rsu_rx_multi_frame(struct rsu_softc *sc, uint8_t *buf, int len)
|
||||
{
|
||||
struct r92s_rx_stat *stat;
|
||||
uint32_t rxdw0;
|
||||
@ -1810,7 +1840,7 @@ rsu_rx_multi_frame(struct rsu_softc *sc, uint8_t *buf, int len, int *rssi)
|
||||
break;
|
||||
|
||||
/* Process 802.11 frame. */
|
||||
m = rsu_rx_frame(sc, buf, pktlen, rssi);
|
||||
m = rsu_rx_frame(sc, buf, pktlen);
|
||||
if (m0 == NULL)
|
||||
m0 = m;
|
||||
if (prevm == NULL)
|
||||
@ -1829,7 +1859,7 @@ rsu_rx_multi_frame(struct rsu_softc *sc, uint8_t *buf, int len, int *rssi)
|
||||
}
|
||||
|
||||
static struct mbuf *
|
||||
rsu_rxeof(struct usb_xfer *xfer, struct rsu_data *data, int *rssi)
|
||||
rsu_rxeof(struct usb_xfer *xfer, struct rsu_data *data)
|
||||
{
|
||||
struct rsu_softc *sc = data->sc;
|
||||
struct ieee80211com *ic = &sc->sc_ic;
|
||||
@ -1850,7 +1880,7 @@ rsu_rxeof(struct usb_xfer *xfer, struct rsu_data *data, int *rssi)
|
||||
/* No packets to process. */
|
||||
return (NULL);
|
||||
} else
|
||||
return (rsu_rx_multi_frame(sc, data->buf, len, rssi));
|
||||
return (rsu_rx_multi_frame(sc, data->buf, len));
|
||||
}
|
||||
|
||||
static void
|
||||
@ -1862,7 +1892,6 @@ rsu_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
|
||||
struct ieee80211_node *ni;
|
||||
struct mbuf *m = NULL, *next;
|
||||
struct rsu_data *data;
|
||||
int rssi = 1;
|
||||
|
||||
RSU_ASSERT_LOCKED(sc);
|
||||
|
||||
@ -1872,7 +1901,7 @@ rsu_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
|
||||
if (data == NULL)
|
||||
goto tr_setup;
|
||||
STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
|
||||
m = rsu_rxeof(xfer, data, &rssi);
|
||||
m = rsu_rxeof(xfer, data);
|
||||
STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
|
||||
/* FALLTHROUGH */
|
||||
case USB_ST_SETUP:
|
||||
@ -1898,6 +1927,11 @@ rsu_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
|
||||
*/
|
||||
RSU_UNLOCK(sc);
|
||||
while (m != NULL) {
|
||||
int rssi;
|
||||
|
||||
/* Cheat and get the last calibrated RSSI */
|
||||
rssi = rsu_hwrssi_to_rssi(sc, sc->sc_currssi);
|
||||
|
||||
next = m->m_next;
|
||||
m->m_next = NULL;
|
||||
wh = mtod(m, struct ieee80211_frame *);
|
||||
@ -1906,10 +1940,10 @@ rsu_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
|
||||
if (ni != NULL) {
|
||||
if (ni->ni_flags & IEEE80211_NODE_HT)
|
||||
m->m_flags |= M_AMPDU;
|
||||
(void)ieee80211_input(ni, m, rssi, 0);
|
||||
(void)ieee80211_input(ni, m, rssi, -96);
|
||||
ieee80211_free_node(ni);
|
||||
} else
|
||||
(void)ieee80211_input_all(ic, m, rssi, 0);
|
||||
(void)ieee80211_input_all(ic, m, rssi, -96);
|
||||
m = next;
|
||||
}
|
||||
RSU_LOCK(sc);
|
||||
@ -2003,6 +2037,12 @@ rsu_bulk_tx_callback_sub(struct usb_xfer *xfer, usb_error_t error,
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
/*
|
||||
* XXX TODO: if the queue is low, flush out FF TX frames.
|
||||
* Remember to unlock the driver for now; net80211 doesn't
|
||||
* defer it for us.
|
||||
*/
|
||||
}
|
||||
|
||||
static void
|
||||
|
||||
@ -764,6 +764,7 @@ struct rsu_softc {
|
||||
int sc_ht;
|
||||
int sc_nendpoints;
|
||||
int sc_curpwrstate;
|
||||
int sc_currssi;
|
||||
|
||||
u_int sc_running:1,
|
||||
sc_calibrating:1,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user