From: Ilan Peer <ilan.peer@xxxxxxxxx>
Add attributes and some code bits to support userspace passing
in EHT capabilities of stations.
Signed-off-by: Ilan Peer <ilan.peer@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
include/net/cfg80211.h | 4 ++++
include/uapi/linux/nl80211.h | 10 +++++++++-
net/wireless/nl80211.c | 37 ++++++++++++++++++++++++++++++++----
3 files changed, 46 insertions(+), 5 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 5cfc483dece1..68713388b617 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1487,6 +1487,8 @@ struct sta_txpwr {
* @airtime_weight: airtime scheduler weight for this station
* @txpwr: transmit power for an associated station
* @he_6ghz_capa: HE 6 GHz Band capabilities of station
+ * @eht_capa: EHT capabilities of station
+ * @eht_capa_len: the length of the EHT capabilities
*/
struct station_parameters {
const u8 *supported_rates;
@@ -1520,6 +1522,8 @@ struct station_parameters {
u16 airtime_weight;
struct sta_txpwr txpwr;
const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
+ const struct ieee80211_eht_cap_elem *eht_capa;
+ u8 eht_capa_len;
};
/**
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index baf6433c0119..98ed52663d6b 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -11,7 +11,7 @@
* Copyright 2008 Jouni Malinen <jouni.malinen@xxxxxxxxxxx>
* Copyright 2008 Colin McCabe <colin@xxxxxxxxxxx>
* Copyright 2015-2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2021 Intel Corporation
+ * Copyright (C) 2018-2022 Intel Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@@ -2659,6 +2659,10 @@ enum nl80211_commands {
* enumerated in &enum nl80211_ap_settings_flags. This attribute shall be
* used with %NL80211_CMD_START_AP request.
*
+ * @NL80211_ATTR_EHT_CAPABILITY: EHT Capability information element (from
+ * association request when used with NL80211_CMD_NEW_STATION). Can be set
+ * only if %NL80211_STA_FLAG_WME is set.
+ *
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -3169,6 +3173,8 @@ enum nl80211_attrs {
NL80211_ATTR_AP_SETTINGS_FLAGS,
+ NL80211_ATTR_EHT_CAPABILITY,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -3224,6 +3230,8 @@ enum nl80211_attrs {
#define NL80211_HE_MAX_CAPABILITY_LEN 54
#define NL80211_MAX_NR_CIPHER_SUITES 5
#define NL80211_MAX_NR_AKM_SUITES 2
+#define NL80211_EHT_MIN_CAPABILITY_LEN 13
+#define NL80211_EHT_MAX_CAPABILITY_LEN 51
#define NL80211_MIN_REMAIN_ON_CHANNEL_TIME 10
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 4067e41ca288..5b635d0a3ddb 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5,7 +5,7 @@
* Copyright 2006-2010 Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright 2015-2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2021 Intel Corporation
+ * Copyright (C) 2018-2022 Intel Corporation
*/
#include <linux/if.h>
@@ -789,6 +789,10 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
[NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
[NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
+ [NL80211_ATTR_EHT_CAPABILITY] =
+ NLA_POLICY_RANGE(NLA_BINARY,
+ NL80211_EHT_MIN_CAPABILITY_LEN,
+ NL80211_EHT_MAX_CAPABILITY_LEN),
};
/* policy for the key attributes */
@@ -6428,7 +6432,7 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
if (params->supported_rates)
return -EINVAL;
if (params->ext_capab || params->ht_capa || params->vht_capa ||
- params->he_capa)
+ params->he_capa || params->eht_capa)
return -EINVAL;
}
@@ -6631,6 +6635,18 @@ static int nl80211_set_station_tdls(struct genl_info *info,
nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
params->he_capa_len =
nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
+
+ if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
+ params->eht_capa =
+ nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
+ params->eht_capa_len =
+ nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
+
+ if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_capa,
+ (const u8 *)params->eht_capa,
+ params->eht_capa_len))
+ return -EINVAL;
+ }
}
err = nl80211_parse_sta_channel_info(info, params);
@@ -6888,6 +6904,18 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
params.he_capa_len =
nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
+
+ if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
+ params.eht_capa =
+ nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
+ params.eht_capa_len =
+ nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
+
+ if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
+ (const u8 *)params.eht_capa,
+ params.eht_capa_len))
+ return -EINVAL;
+ }
}
if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
@@ -6937,8 +6965,9 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
params.ht_capa = NULL;
params.vht_capa = NULL;
- /* HE requires WME */
- if (params.he_capa_len || params.he_6ghz_capa)
+ /* HE and EHT require WME */
+ if (params.he_capa_len || params.he_6ghz_capa ||
+ params.eht_capa_len)
return -EINVAL;
}
--
2.34.1
