diff options
Diffstat (limited to 'net/mac80211/main.c')
| -rw-r--r-- | net/mac80211/main.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 2d51eca46aa0..c78629f8b7a0 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -4,6 +4,7 @@ * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> * Copyright 2013-2014 Intel Mobile Communications GmbH * Copyright (C) 2017 Intel Deutschland GmbH + * Copyright (C) 2018 Intel Corporation * * 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 @@ -1158,6 +1159,51 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) goto fail_rate; } + if (local->rate_ctrl) { + clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags); + if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW) + ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); + } + + /* + * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE, + * or have it when we don't, copy the sband structure and set/clear it. + * This is necessary because rate scaling algorithms could be switched + * and have different support values. + * Print a message so that in the common case the reallocation can be + * avoided. + */ + BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated)); + for (band = 0; band < NUM_NL80211_BANDS; band++) { + struct ieee80211_supported_band *sband; + bool local_cap, ie_cap; + + local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW); + + sband = local->hw.wiphy->bands[band]; + if (!sband || !sband->vht_cap.vht_supported) + continue; + + ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest & + cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE)); + + if (local_cap == ie_cap) + continue; + + sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL); + if (!sband) + goto fail_rate; + + wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n", + band); + + sband->vht_cap.vht_mcs.tx_highest ^= + cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE); + + local->hw.wiphy->bands[band] = sband; + local->sband_allocated |= BIT(band); + } + /* add one default STA interface if supported */ if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) && !ieee80211_hw_check(hw, NO_AUTO_VIF)) { @@ -1276,6 +1322,7 @@ static int ieee80211_free_ack_frame(int id, void *p, void *data) void ieee80211_free_hw(struct ieee80211_hw *hw) { struct ieee80211_local *local = hw_to_local(hw); + enum nl80211_band band; mutex_destroy(&local->iflist_mtx); mutex_destroy(&local->mtx); @@ -1291,6 +1338,12 @@ void ieee80211_free_hw(struct ieee80211_hw *hw) ieee80211_free_led_names(local); + for (band = 0; band < NUM_NL80211_BANDS; band++) { + if (!(local->sband_allocated & BIT(band))) + continue; + kfree(local->hw.wiphy->bands[band]); + } + wiphy_free(local->hw.wiphy); } EXPORT_SYMBOL(ieee80211_free_hw); |