From 818255ea47709065c53c86ca47fce96d8580bee1 Mon Sep 17 00:00:00 2001 From: Mahesh Palivela Date: Wed, 10 Oct 2012 11:33:04 +0000 Subject: [PATCH] mac80211: VHT peer STA caps Save the AP's VHT capabilities (in managed mode) and make them available to the driver in the station information. Unlike HT capabilities, they aren't restricted to the common capabilities, so drivers must be aware of their own capabilities. Signed-off-by: Mahesh Palivela [fix endian conversion bug ...] Signed-off-by: Johannes Berg --- include/net/mac80211.h | 3 +++ net/mac80211/Makefile | 1 + net/mac80211/ieee80211_i.h | 7 +++++++ net/mac80211/mlme.c | 5 +++++ net/mac80211/util.c | 12 ++++++++++++ net/mac80211/vht.c | 35 +++++++++++++++++++++++++++++++++++ 6 files changed, 63 insertions(+) create mode 100644 net/mac80211/vht.c diff --git a/include/net/mac80211.h b/include/net/mac80211.h index f12df5bb529f..89d5bba28e05 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -1122,6 +1122,8 @@ enum ieee80211_sta_state { * @aid: AID we assigned to the station if we're an AP * @supp_rates: Bitmap of supported rates (per band) * @ht_cap: HT capabilities of this STA; restricted to our own TX capabilities + * @vht_cap: VHT capabilities of this STA; Not restricting any capabilities + * of remote STA. Taking as is. * @wme: indicates whether the STA supports WME. Only valid during AP-mode. * @drv_priv: data area for driver use, will always be aligned to * sizeof(void *), size is determined in hw information. @@ -1134,6 +1136,7 @@ struct ieee80211_sta { u8 addr[ETH_ALEN]; u16 aid; struct ieee80211_sta_ht_cap ht_cap; + struct ieee80211_sta_vht_cap vht_cap; bool wme; u8 uapsd_queues; u8 max_sp; diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile index a7dd110faafa..4911202334d9 100644 --- a/net/mac80211/Makefile +++ b/net/mac80211/Makefile @@ -8,6 +8,7 @@ mac80211-y := \ wpa.o \ scan.o offchannel.o \ ht.o agg-tx.o agg-rx.o \ + vht.o \ ibss.o \ iface.o \ rate.o \ diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index b7382454d0a6..6327816790e6 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1188,6 +1188,8 @@ struct ieee802_11_elems { u8 *wmm_param; struct ieee80211_ht_cap *ht_cap_elem; struct ieee80211_ht_operation *ht_operation; + struct ieee80211_vht_cap *vht_cap_elem; + struct ieee80211_vht_operation *vht_operation; struct ieee80211_meshconf_ie *mesh_config; u8 *mesh_id; u8 *peering; @@ -1416,6 +1418,11 @@ void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); +/* VHT */ +void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, + struct ieee80211_supported_band *sband, + struct ieee80211_vht_cap *vht_cap_ie, + struct ieee80211_sta_vht_cap *vht_cap); /* Spectrum management */ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 4af5a3eb892e..ab39c4f44e5c 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2156,6 +2156,11 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, sta->supports_40mhz = sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40; + if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) + ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, + elems.vht_cap_elem, + &sta->sta.vht_cap); + rate_control_rate_init(sta); if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 3dca9827624a..51a4a2516233 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -741,6 +741,18 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, else elem_parse_failed = true; break; + case WLAN_EID_VHT_CAPABILITY: + if (elen >= sizeof(struct ieee80211_vht_cap)) + elems->vht_cap_elem = (void *)pos; + else + elem_parse_failed = true; + break; + case WLAN_EID_VHT_OPERATION: + if (elen >= sizeof(struct ieee80211_vht_operation)) + elems->vht_operation = (void *)pos; + else + elem_parse_failed = true; + break; case WLAN_EID_MESH_ID: elems->mesh_id = pos; elems->mesh_id_len = elen; diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c new file mode 100644 index 000000000000..f311388aeedf --- /dev/null +++ b/net/mac80211/vht.c @@ -0,0 +1,35 @@ +/* + * VHT handling + * + * 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 + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include "ieee80211_i.h" + + +void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, + struct ieee80211_supported_band *sband, + struct ieee80211_vht_cap *vht_cap_ie, + struct ieee80211_sta_vht_cap *vht_cap) +{ + if (WARN_ON_ONCE(!vht_cap)) + return; + + memset(vht_cap, 0, sizeof(*vht_cap)); + + if (!vht_cap_ie || !sband->vht_cap.vht_supported) + return; + + vht_cap->vht_supported = true; + + vht_cap->cap = le32_to_cpu(vht_cap_ie->vht_cap_info); + + /* Copy peer MCS info, the driver might need them. */ + memcpy(&vht_cap->vht_mcs, &vht_cap_ie->supp_mcs, + sizeof(struct ieee80211_vht_mcs_info)); +}