diff options
| -rw-r--r-- | net/mac80211/cfg.c | 18 | ||||
| -rw-r--r-- | net/mac80211/mlme.c | 2 | ||||
| -rw-r--r-- | net/mac80211/rate.c | 27 | ||||
| -rw-r--r-- | net/mac80211/rate.h | 2 |
4 files changed, 48 insertions, 1 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 9c7490cb2243..8bc3d3669348 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -3,7 +3,7 @@ * * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> * Copyright 2013-2015 Intel Mobile Communications GmbH - * Copyright (C) 2015-2016 Intel Deutschland GmbH + * Copyright (C) 2015-2017 Intel Deutschland GmbH * * This file is GPLv2 as found in COPYING. */ @@ -2042,6 +2042,7 @@ static int ieee80211_change_bss(struct wiphy *wiphy, params->basic_rates_len, &sdata->vif.bss_conf.basic_rates); changed |= BSS_CHANGED_BASIC_RATES; + ieee80211_check_rate_mask(sdata); } if (params->ap_isolate >= 0) { @@ -2685,6 +2686,21 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, return ret; } + /* + * If active validate the setting and reject it if it doesn't leave + * at least one basic rate usable, since we really have to be able + * to send something, and if we're an AP we have to be able to do + * so at a basic rate so that all clients can receive it. + */ + if (rcu_access_pointer(sdata->vif.chanctx_conf) && + sdata->vif.bss_conf.chandef.chan) { + u32 basic_rates = sdata->vif.bss_conf.basic_rates; + enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band; + + if (!(mask->control[band].legacy & basic_rates)) + return -EINVAL; + } + for (i = 0; i < NUM_NL80211_BANDS; i++) { struct ieee80211_supported_band *sband = wiphy->bands[i]; int j; diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 4b4d29edec09..24d69bcf71ad 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1908,6 +1908,8 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, sdata->u.mgd.associated = cbss; memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); + ieee80211_check_rate_mask(sdata); + sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; if (sdata->vif.p2p || diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c index 094c15645228..3bddd9bbb76f 100644 --- a/net/mac80211/rate.c +++ b/net/mac80211/rate.c @@ -2,6 +2,7 @@ * Copyright 2002-2005, Instant802 Networks, Inc. * Copyright 2005-2006, Devicescape Software, Inc. * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> + * Copyright 2017 Intel Deutschland GmbH * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -241,6 +242,32 @@ static void rate_control_free(struct ieee80211_local *local, kfree(ctrl_ref); } +void ieee80211_check_rate_mask(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_supported_band *sband; + u32 user_mask, basic_rates = sdata->vif.bss_conf.basic_rates; + enum nl80211_band band; + + if (WARN_ON(!sdata->vif.bss_conf.chandef.chan)) + return; + + if (WARN_ON_ONCE(!basic_rates)) + return; + + band = sdata->vif.bss_conf.chandef.chan->band; + user_mask = sdata->rc_rateidx_mask[band]; + sband = local->hw.wiphy->bands[band]; + + if (user_mask & basic_rates) + return; + + sdata_dbg(sdata, + "no overlap between basic rates (0x%x) and user mask (0x%x on band %d) - clearing the latter", + basic_rates, user_mask, band); + sdata->rc_rateidx_mask[band] = (1 << sband->n_bitrates) - 1; +} + static bool rc_no_data_or_no_ack_use_min(struct ieee80211_tx_rate_control *txrc) { struct sk_buff *skb = txrc->skb; diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h index d51a1cce4d4a..f7825ef5f871 100644 --- a/net/mac80211/rate.h +++ b/net/mac80211/rate.h @@ -110,6 +110,8 @@ static inline void rate_control_remove_sta_debugfs(struct sta_info *sta) #endif } +void ieee80211_check_rate_mask(struct ieee80211_sub_if_data *sdata); + /* Get a reference to the rate control algorithm. If `name' is NULL, get the * first available algorithm. */ int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, |