On 11/07/2011 01:35 PM, greearb@xxxxxxxxxxxxxxx wrote:
From: Ben Greear<greearb@xxxxxxxxxxxxxxx>
This allows users to disable features such as HT, HT40,
and to modify the MCS, AMPDU, and AMSDU settings for
drivers that support it.
The MCS, AMPDU, and AMSDU features that may be disabled are
are reported in the phy-info netlink message as a mask.
Attemping to disable features that are not supported will
take no affect, but will not return errors. This is to aid
backwards compatibility in user-space apps that may not be
clever enough to deal with parsing the the capabilities mask.
This patch only enables the infrastructure. An additional
patch will enable the feature in mac80211.
Signed-off-by: Ben Greear<greearb@xxxxxxxxxxxxxxx>
---
* Removed DISABLE_HT40 variable..instead just modify ht-cap
flags to disable ht-40.
* Mask out un-supported values. Will not return error, but will
force driver to keep the mod-mask up to date if someone wants to
override additional features.
:100644 100644 8049bf7... 5b86a3b... M include/linux/nl80211.h
:100644 100644 92cf1c2... cc7e995... M include/net/cfg80211.h
:100644 100644 b9ec306... dd6feda... M net/wireless/core.h
:100644 100644 21fc970... e0d3a50... M net/wireless/mlme.c
:100644 100644 48260c2... 80e5144... M net/wireless/nl80211.c
:100644 100644 6e86d5a... d144e2d... M net/wireless/sme.c
include/linux/nl80211.h | 8 ++++++++
include/net/cfg80211.h | 28 ++++++++++++++++++++++++++++
net/wireless/core.h | 8 ++++++--
net/wireless/mlme.c | 37 ++++++++++++++++++++++++++++++++++---
net/wireless/nl80211.c | 44 +++++++++++++++++++++++++++++++++++++++++++-
net/wireless/sme.c | 4 +++-
6 files changed, 122 insertions(+), 7 deletions(-)
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 8049bf7..5b86a3b 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1109,6 +1109,11 @@ enum nl80211_commands {
* %NL80211_CMD_TDLS_MGMT. Otherwise %NL80211_CMD_TDLS_OPER should be
* used for asking the driver to perform a TDLS operation.
*
+ * @NL80211_ATTR_DISABLE_HT: Force HT capable interfaces to disable
+ * this feature.
+ * @NL80211_ATTR_HT_CAPABILITY_MASK: Specify which bits of the HT_CAPs
+ * to pay attention to.
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -1337,6 +1342,9 @@ enum nl80211_attrs {
NL80211_ATTR_TDLS_SUPPORT,
NL80211_ATTR_TDLS_EXTERNAL_SETUP,
+ NL80211_ATTR_DISABLE_HT,
+ NL80211_ATTR_HT_CAPABILITY_MASK,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 92cf1c2..cc7e995 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1036,6 +1036,15 @@ struct cfg80211_auth_request {
};
/**
+ * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association.
+ *
+ * @ASSOC_REQ_DISABLE_HT: Disable HT (802.11n)
+ */
+enum cfg80211_assoc_req_flags {
+ ASSOC_REQ_DISABLE_HT = BIT(0),
+};
+
+/**
* struct cfg80211_assoc_request - (Re)Association request data
*
* This structure provides information needed to complete IEEE 802.11
@@ -1046,6 +1055,10 @@ struct cfg80211_auth_request {
* @use_mfp: Use management frame protection (IEEE 802.11w) in this association
* @crypto: crypto settings
* @prev_bssid: previous BSSID, if not %NULL use reassociate frame
+ * @flags: See&enum cfg80211_assoc_req_flags
+ * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask
+ * will be used in ht_capa. Un-supported values will be ignored.
+ * @ht_capa_mask: The bits of ht_capa which are to be used.
*/
struct cfg80211_assoc_request {
struct cfg80211_bss *bss;
@@ -1053,6 +1066,9 @@ struct cfg80211_assoc_request {
size_t ie_len;
struct cfg80211_crypto_settings crypto;
bool use_mfp;
+ u32 flags;
+ struct ieee80211_ht_cap ht_capa;
+ struct ieee80211_ht_cap ht_capa_mask;
};
/**
@@ -1151,6 +1167,10 @@ struct cfg80211_ibss_params {
* @key_len: length of WEP key for shared key authentication
* @key_idx: index of WEP key for shared key authentication
* @key: WEP key for shared key authentication
+ * @flags: See&enum cfg80211_assoc_req_flags
+ * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask
+ * will be used in ht_capa. Un-supported values will be ignored.
+ * @ht_capa_mask: The bits of ht_capa which are to be used.
*/
struct cfg80211_connect_params {
struct ieee80211_channel *channel;
@@ -1164,6 +1184,9 @@ struct cfg80211_connect_params {
struct cfg80211_crypto_settings crypto;
const u8 *key;
u8 key_len, key_idx;
+ u32 flags;
+ struct ieee80211_ht_cap ht_capa;
+ struct ieee80211_ht_cap ht_capa_mask;
};
/**
@@ -1903,6 +1926,9 @@ struct wiphy_wowlan_support {
* may request, if implemented.
*
* @wowlan: WoWLAN support information
+ *
+ * @ht_capa_mod_msk: Specify what ht_cap values can be over-ridden.
+ * If null, then none can be over-ridden.
*/
struct wiphy {
/* assign these fields before you register the wiphy */
@@ -1983,6 +2009,8 @@ struct wiphy {
/* dir in debugfs: ieee80211/<wiphyname> */
struct dentry *debugfsdir;
+ struct ieee80211_ht_cap *ht_capa_mod_mask;
Gah, this needs to be const.. I'll send a new patch with
this change shortly.
Thanks,
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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