From caf56338c22f00098bf2acd646b0ddc691c80c24 Mon Sep 17 00:00:00 2001 From: Sara Sharon Date: Wed, 16 Jan 2019 23:03:25 +0200 Subject: [PATCH] mac80211: indicate support for multiple BSSID Set multi-bssid support flags according to driver support. Signed-off-by: Sara Sharon Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 5 +++++ include/net/mac80211.h | 7 +++++++ net/mac80211/debugfs.c | 4 +++- net/mac80211/main.c | 13 ++++++++++++- net/mac80211/mlme.c | 15 +++++++++++++++ 5 files changed, 42 insertions(+), 2 deletions(-) diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 7479f0bd50e1..8da5ba97328f 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -2657,6 +2657,11 @@ enum ieee80211_tdls_actioncode { */ #define WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING BIT(2) +/* Multiple BSSID capability is set in the 6th bit of 3rd byte of the + * @WLAN_EID_EXT_CAPABILITY information element + */ +#define WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT BIT(6) + /* TDLS capabilities in the the 4th byte of @WLAN_EID_EXT_CAPABILITY */ #define WLAN_EXT_CAPA4_TDLS_BUFFER_STA BIT(4) #define WLAN_EXT_CAPA4_TDLS_PEER_PSM BIT(5) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index b0e364f50285..97aed7b1ba5d 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2234,6 +2234,11 @@ struct ieee80211_txq { * @IEEE80211_HW_TX_STATUS_NO_AMPDU_LEN: Driver does not report accurate A-MPDU * length in tx status information * + * @IEEE80211_HW_SUPPORTS_MULTI_BSSID: Hardware supports multi BSSID + * + * @IEEE80211_HW_SUPPORTS_ONLY_HE_MULTI_BSSID: Hardware supports multi BSSID + * only for HE APs. Applies if @IEEE80211_HW_SUPPORTS_MULTI_BSSID is set. + * * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays */ enum ieee80211_hw_flags { @@ -2283,6 +2288,8 @@ enum ieee80211_hw_flags { IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, IEEE80211_HW_STA_MMPDU_TXQ, IEEE80211_HW_TX_STATUS_NO_AMPDU_LEN, + IEEE80211_HW_SUPPORTS_MULTI_BSSID, + IEEE80211_HW_SUPPORTS_ONLY_HE_MULTI_BSSID, /* keep last, obviously */ NUM_IEEE80211_HW_FLAGS diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index 343ad0a915e4..2d43bc127043 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -3,7 +3,7 @@ * * Copyright 2007 Johannes Berg * Copyright 2013-2014 Intel Mobile Communications GmbH - * Copyright (C) 2018 Intel Corporation + * Copyright (C) 2018 - 2019 Intel Corporation * * GPLv2 * @@ -219,6 +219,8 @@ static const char *hw_flag_names[] = { FLAG(SUPPORTS_VHT_EXT_NSS_BW), FLAG(STA_MMPDU_TXQ), FLAG(TX_STATUS_NO_AMPDU_LEN), + FLAG(SUPPORTS_MULTI_BSSID), + FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID), #undef FLAG }; diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 71005b6dfcd1..5055aeba5c5a 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -4,7 +4,7 @@ * Copyright 2006-2007 Jiri Benc * Copyright 2013-2014 Intel Mobile Communications GmbH * Copyright (C) 2017 Intel Deutschland GmbH - * Copyright (C) 2018 Intel Corporation + * Copyright (C) 2018 - 2019 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 @@ -1112,6 +1112,17 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING; + /* mac80211 supports multi BSSID, if the driver supports it */ + if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) { + local->hw.wiphy->support_mbssid = true; + if (ieee80211_hw_check(&local->hw, + SUPPORTS_ONLY_HE_MULTI_BSSID)) + local->hw.wiphy->support_only_he_mbssid = true; + else + local->ext_capa[2] |= + WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT; + } + local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM; result = wiphy_register(local->hw.wiphy); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 64b6ddb67456..a49fbb3f3ed7 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -813,6 +813,21 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) } } + /* Set MBSSID support for HE AP if needed */ + if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) && + !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && assoc_data->ie_len) { + struct element *elem; + + /* we know it's writable, cast away the const */ + elem = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, + assoc_data->ie, + assoc_data->ie_len); + + /* We can probably assume both always true */ + if (elem && elem->datalen >= 3) + elem->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT; + } + /* if present, add any custom IEs that go before HT */ if (assoc_data->ie_len) { static const u8 before_ht[] = { -- 2.30.2