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authorBen Greear <greearb@candelatech.com>2011-11-18 11:31:59 -0800
committerJohn W. Linville <linville@tuxdriver.com>2011-11-21 16:22:06 -0500
commit7e7c8926b2f4e3453b8aeb39cd814d2af3fec24f (patch)
treee22df42bf84d6ea3cb67ae0e332d7d7d10cca4b4 /net/wireless/mlme.c
parentdd76986b0e398978ca32dd60c1b7dc50ab4e9ae1 (diff)
wireless: Support ht-capabilities over-rides.
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@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/mlme.c')
-rw-r--r--net/wireless/mlme.c37
1 files changed, 34 insertions, 3 deletions
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 6c1bafd508c8..438dfc105b4a 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -501,13 +501,32 @@ int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
return err;
}
+/* Do a logical ht_capa &= ht_capa_mask. */
+void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
+ const struct ieee80211_ht_cap *ht_capa_mask)
+{
+ int i;
+ u8 *p1, *p2;
+ if (!ht_capa_mask) {
+ memset(ht_capa, 0, sizeof(*ht_capa));
+ return;
+ }
+
+ p1 = (u8*)(ht_capa);
+ p2 = (u8*)(ht_capa_mask);
+ for (i = 0; i<sizeof(*ht_capa); i++)
+ p1[i] &= p2[i];
+}
+
int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct ieee80211_channel *chan,
const u8 *bssid, const u8 *prev_bssid,
const u8 *ssid, int ssid_len,
const u8 *ie, int ie_len, bool use_mfp,
- struct cfg80211_crypto_settings *crypt)
+ struct cfg80211_crypto_settings *crypt,
+ u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
+ struct ieee80211_ht_cap *ht_capa_mask)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_assoc_request req;
@@ -537,6 +556,15 @@ int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
memcpy(&req.crypto, crypt, sizeof(req.crypto));
req.use_mfp = use_mfp;
req.prev_bssid = prev_bssid;
+ req.flags = assoc_flags;
+ if (ht_capa)
+ memcpy(&req.ht_capa, ht_capa, sizeof(req.ht_capa));
+ if (ht_capa_mask)
+ memcpy(&req.ht_capa_mask, ht_capa_mask,
+ sizeof(req.ht_capa_mask));
+ cfg80211_oper_and_ht_capa(&req.ht_capa_mask,
+ rdev->wiphy.ht_capa_mod_mask);
+
req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
if (!req.bss) {
@@ -574,14 +602,17 @@ int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
const u8 *bssid, const u8 *prev_bssid,
const u8 *ssid, int ssid_len,
const u8 *ie, int ie_len, bool use_mfp,
- struct cfg80211_crypto_settings *crypt)
+ struct cfg80211_crypto_settings *crypt,
+ u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
+ struct ieee80211_ht_cap *ht_capa_mask)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
wdev_lock(wdev);
err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
- ssid, ssid_len, ie, ie_len, use_mfp, crypt);
+ ssid, ssid_len, ie, ie_len, use_mfp, crypt,
+ assoc_flags, ht_capa, ht_capa_mask);
wdev_unlock(wdev);
return err;