diff options
Diffstat (limited to 'net/mac80211/rate.c')
| -rw-r--r-- | net/mac80211/rate.c | 69 |
1 files changed, 61 insertions, 8 deletions
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c index 206698bc93f4..ea1f4315c521 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 @@ -61,6 +62,28 @@ void rate_control_rate_init(struct sta_info *sta) set_sta_flag(sta, WLAN_STA_RATE_CONTROL); } +void rate_control_tx_status(struct ieee80211_local *local, + struct ieee80211_supported_band *sband, + struct ieee80211_tx_status *st) +{ + struct rate_control_ref *ref = local->rate_ctrl; + struct sta_info *sta = container_of(st->sta, struct sta_info, sta); + void *priv_sta = sta->rate_ctrl_priv; + + if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) + return; + + spin_lock_bh(&sta->rate_ctrl_lock); + if (ref->ops->tx_status_ext) + ref->ops->tx_status_ext(ref->priv, sband, priv_sta, st); + else if (st->skb) + ref->ops->tx_status(ref->priv, sband, st->sta, priv_sta, st->skb); + else + WARN_ON_ONCE(1); + + spin_unlock_bh(&sta->rate_ctrl_lock); +} + void rate_control_rate_update(struct ieee80211_local *local, struct ieee80211_supported_band *sband, struct sta_info *sta, u32 changed) @@ -173,9 +196,11 @@ ieee80211_rate_control_ops_get(const char *name) /* try default if specific alg requested but not found */ ops = ieee80211_try_rate_control_ops_get(ieee80211_default_rc_algo); - /* try built-in one if specific alg requested but not found */ - if (!ops && strlen(CONFIG_MAC80211_RC_DEFAULT)) + /* Note: check for > 0 is intentional to avoid clang warning */ + if (!ops && (strlen(CONFIG_MAC80211_RC_DEFAULT) > 0)) + /* try built-in one if specific alg requested but not found */ ops = ieee80211_try_rate_control_ops_get(CONFIG_MAC80211_RC_DEFAULT); + kernel_param_unlock(THIS_MODULE); return ops; @@ -208,7 +233,6 @@ static struct rate_control_ref *rate_control_alloc(const char *name, ref = kmalloc(sizeof(struct rate_control_ref), GFP_KERNEL); if (!ref) return NULL; - ref->local = local; ref->ops = ieee80211_rate_control_ops_get(name); if (!ref->ops) goto free; @@ -229,18 +253,45 @@ free: return NULL; } -static void rate_control_free(struct rate_control_ref *ctrl_ref) +static void rate_control_free(struct ieee80211_local *local, + struct rate_control_ref *ctrl_ref) { ctrl_ref->ops->free(ctrl_ref->priv); #ifdef CONFIG_MAC80211_DEBUGFS - debugfs_remove_recursive(ctrl_ref->local->debugfs.rcdir); - ctrl_ref->local->debugfs.rcdir = NULL; + debugfs_remove_recursive(local->debugfs.rcdir); + local->debugfs.rcdir = NULL; #endif 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; @@ -875,7 +926,9 @@ int rate_control_set_rates(struct ieee80211_hw *hw, struct ieee80211_sta_rates *old; struct ieee80211_supported_band *sband; - sband = hw->wiphy->bands[ieee80211_get_sdata_band(sta->sdata)]; + sband = ieee80211_get_sband(sta->sdata); + if (!sband) + return -EINVAL; rate_control_apply_mask_ratetbl(sta, sband, rates); /* * mac80211 guarantees that this function will not be called @@ -936,6 +989,6 @@ void rate_control_deinitialize(struct ieee80211_local *local) return; local->rate_ctrl = NULL; - rate_control_free(ref); + rate_control_free(local, ref); } |