diff options
Diffstat (limited to 'net/mac80211/mlme.c')
| -rw-r--r-- | net/mac80211/mlme.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 1e1d16c55ee..86c6ad1b058 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -484,6 +484,7 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) if (count == 1 && found->u.mgd.powersave && found->u.mgd.associated && + found->u.mgd.associated->beacon_ies && !(found->u.mgd.flags & (IEEE80211_STA_BEACON_POLL | IEEE80211_STA_CONNECTION_POLL))) { s32 beaconint_us; @@ -497,14 +498,22 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) if (beaconint_us > latency) { local->ps_sdata = NULL; } else { - u8 dtimper = found->vif.bss_conf.dtim_period; + struct ieee80211_bss *bss; int maxslp = 1; + u8 dtimper; - if (dtimper > 1) + bss = (void *)found->u.mgd.associated->priv; + dtimper = bss->dtim_period; + + /* If the TIM IE is invalid, pretend the value is 1 */ + if (!dtimper) + dtimper = 1; + else if (dtimper > 1) maxslp = min_t(int, dtimper, latency / beaconint_us); local->hw.conf.max_sleep_period = maxslp; + local->hw.conf.ps_dtim_period = dtimper; local->ps_sdata = found; } } else { @@ -702,7 +711,6 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, /* set timing information */ sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; sdata->vif.bss_conf.timestamp = cbss->tsf; - sdata->vif.bss_conf.dtim_period = bss->dtim_period; bss_info_changed |= BSS_CHANGED_BEACON_INT; bss_info_changed |= ieee80211_handle_bss_capability(sdata, @@ -1168,6 +1176,13 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, int freq; struct ieee80211_bss *bss; struct ieee80211_channel *channel; + bool need_ps = false; + + if (sdata->u.mgd.associated) { + bss = (void *)sdata->u.mgd.associated->priv; + /* not previously set so we may need to recalc */ + need_ps = !bss->dtim_period; + } if (elems->ds_params && elems->ds_params_len == 1) freq = ieee80211_channel_to_frequency(elems->ds_params[0]); @@ -1187,6 +1202,12 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, if (!sdata->u.mgd.associated) return; + if (need_ps) { + mutex_lock(&local->iflist_mtx); + ieee80211_recalc_ps(local, -1); + mutex_unlock(&local->iflist_mtx); + } + if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) && (memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid, ETH_ALEN) == 0)) { |