void
ieee80211_rssadapt_raise_rate(struct ieee80211com *ic,
struct ieee80211_rssadapt *ra, struct ieee80211_rssdesc *id)
{
u_int16_t (*thrs)[IEEE80211_RATE_SIZE], newthr, oldthr;
struct ieee80211_node *ni = id->id_node;
struct ieee80211_rateset *rs = &ni->ni_rates;
int i, rate, top;
#ifdef IEEE80211_DEBUG
int j;
#endif
ra->ra_nok++;
if (!ratecheck(&ra->ra_last_raise, &ra->ra_raise_interval))
return;
for (i = 0, top = IEEE80211_RSSADAPT_BKT0;
i < IEEE80211_RSSADAPT_BKTS;
i++, top <<= IEEE80211_RSSADAPT_BKTPOWER) {
thrs = &ra->ra_rate_thresh[i];
if (id->id_len <= top)
break;
}
if (id->id_rateidx + 1 < rs->rs_nrates &&
(*thrs)[id->id_rateidx + 1] > (*thrs)[id->id_rateidx]) {
rate = (rs->rs_rates[id->id_rateidx + 1] & IEEE80211_RATE_VAL);
RSSADAPT_PRINTF(("%s: threshold[%d, %d.%d] decay %d ",
ic->ic_ifp->if_xname,
IEEE80211_RSSADAPT_BKT0 << (IEEE80211_RSSADAPT_BKTPOWER* i),
rate / 2, rate * 5 % 10, (*thrs)[id->id_rateidx + 1]));
oldthr = (*thrs)[id->id_rateidx + 1];
if ((*thrs)[id->id_rateidx] == 0)
newthr = ra->ra_avg_rssi;
else
newthr = (*thrs)[id->id_rateidx];
(*thrs)[id->id_rateidx + 1] =
interpolate(master_expavgctl.rc_decay, oldthr, newthr);
RSSADAPT_PRINTF(("-> %d\n", (*thrs)[id->id_rateidx + 1]));
}
#ifdef IEEE80211_DEBUG
if (RSSADAPT_DO_PRINT()) {
printf("%s: dst %s thresholds\n", ic->ic_ifp->if_xname,
ether_sprintf(ni->ni_macaddr));
for (i = 0; i < IEEE80211_RSSADAPT_BKTS; i++) {
printf("%d-byte", IEEE80211_RSSADAPT_BKT0 << (IEEE80211_RSSADAPT_BKTPOWER * i));
for (j = 0; j < rs->rs_nrates; j++) {
rate = (rs->rs_rates[j] & IEEE80211_RATE_VAL);
printf(", T[%d.%d] = %d", rate / 2,
rate * 5 % 10, ra->ra_rate_thresh[i][j]);
}
printf("\n");
}
}
#endif /* IEEE80211_DEBUG */
}
void
ieee80211_rssadapt_lower_rate(struct ieee80211_s *ic,
const struct ieee80211_node *ni,
struct ieee80211_rssadapt *ra,
const struct ieee80211_rssdesc *id)
{
const struct ieee80211_rateset *rs = &ni->ni_rates;
uint16_t last_thr;
unsigned int i, thridx, top;
ra->ra_nfail++;
if (id->id_rateidx >= rs->rs_nrates)
{
RSSADAPT_PRINTF(("ieee80211_rssadapt_lower_rate: "
"%s rate #%d > #%d out of bounds\n",
ieee80211_addr2str((uint8_t *) ni->ni_macaddr),
id->id_rateidx, rs->rs_nrates - 1));
return;
}
for (i = 0, top = IEEE80211_RSSADAPT_BKT0;
i < IEEE80211_RSSADAPT_BKTS; i++, top <<= IEEE80211_RSSADAPT_BKTPOWER)
{
thridx = i;
if (id->id_len <= top)
break;
}
last_thr = ra->ra_rate_thresh[thridx][id->id_rateidx];
ra->ra_rate_thresh[thridx][id->id_rateidx] =
interpolate(master_expavgctl.rc_thresh, last_thr, (id->id_rssi << 8));
RSSADAPT_PRINTF(("%s: dst %s rssi %d threshold[%d, %d.%d] %d -> %d\n",
ic->ic_ifname,
ieee80211_addr2str((uint8_t *) ni->ni_macaddr), id->id_rssi,
id->id_len,
(rs->rs_rates[id->id_rateidx] & IEEE80211_RATE_VAL) / 2,
(rs->rs_rates[id->id_rateidx] & IEEE80211_RATE_VAL) * 5 % 10,
last_thr, ra->ra_rate_thresh[thridx][id->id_rateidx]));
}
void
ieee80211_rssadapt_input(struct ieee80211com *ic,
const struct ieee80211_node *ni, struct ieee80211_rssadapt *ra, int rssi)
{
#ifdef IEEE80211_DEBUG
int last_avg_rssi = ra->ra_avg_rssi;
#endif
ra->ra_avg_rssi = interpolate(master_expavgctl.rc_avgrssi,
ra->ra_avg_rssi, (rssi << 8));
RSSADAPT_PRINTF(("%s: src %s rssi %d avg %d -> %d\n",
ic->ic_if.if_xname, ether_sprintf((u_int8_t *)ni->ni_macaddr),
rssi, last_avg_rssi, ra->ra_avg_rssi));
}
void
ieee80211_rssadapt_input(struct ieee80211_s *ic,
const struct ieee80211_node *ni,
struct ieee80211_rssadapt *ra, int rssi)
{
#ifdef CONFIG_DEBUG_NET
int last_avg_rssi = ra->ra_avg_rssi;
#endif
ra->ra_avg_rssi = interpolate(master_expavgctl.rc_avgrssi,
ra->ra_avg_rssi, (rssi << 8));
RSSADAPT_PRINTF(("%s: src %s rssi %d avg %d -> %d\n",
ic->ic_ifname,
ieee80211_addr2str((uint8_t *) ni->ni_macaddr), rssi,
last_avg_rssi, ra->ra_avg_rssi));
}