mwifiex: HT capability information handling
1) Initialise HT capabilities in cfg80211 properly.
2) Cfg80211 stack may modify "sband->ht_cap" to disable
40Mhz operation in 2.4GHz band (after recent patch
"cfg80211: module_param to disable HT40 in 2.4GHz band")
Therefore read "sband->ht_cap" instead of an adapter variable
"hw_dot_11n_dev_cap" to get HT capabilities.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/mwifiex/11n.c b/drivers/net/wireless/mwifiex/11n.c
index e22d761..1d294cf 100644
--- a/drivers/net/wireless/mwifiex/11n.c
+++ b/drivers/net/wireless/mwifiex/11n.c
@@ -29,95 +29,38 @@
* Fills HT capability information field, AMPDU Parameters field, HT extended
* capability field, and supported MCS set fields.
*
- * Only the following HT capability information fields are used, all other
- * fields are always turned off.
+ * HT capability information field, AMPDU Parameters field, supported MCS set
+ * fields are retrieved from cfg80211 stack
*
- * Bit 1 : Supported channel width (0: 20MHz, 1: Both 20 and 40 MHz)
- * Bit 4 : Greenfield support (0: Not supported, 1: Supported)
- * Bit 5 : Short GI for 20 MHz support (0: Not supported, 1: Supported)
- * Bit 6 : Short GI for 40 MHz support (0: Not supported, 1: Supported)
- * Bit 7 : Tx STBC (0: Not supported, 1: Supported)
- * Bit 8-9 : Rx STBC (0: Not supported, X: Support for up to X spatial streams)
- * Bit 10 : Delayed BA support (0: Not supported, 1: Supported)
- * Bit 11 : Maximum AMSDU length (0: 3839 octets, 1: 7935 octets)
- * Bit 14 : 40-Mhz intolerant support (0: Not supported, 1: Supported)
- *
- * In addition, the following AMPDU Parameters are set -
- * - Maximum AMPDU length exponent (set to 3)
- * - Minimum AMPDU start spacing (set to 0 - No restrictions)
- *
- * MCS is set for 1x1, with MSC32 for infra mode or ad-hoc mode with 40 MHz
- * support.
- *
- * RD responder bit to set to clear in the extended capability header.
+ * RD responder bit to set to clear in the extended capability header.
*/
void
-mwifiex_fill_cap_info(struct mwifiex_private *priv,
+mwifiex_fill_cap_info(struct mwifiex_private *priv, u8 radio_type,
struct mwifiex_ie_types_htcap *ht_cap)
{
- struct mwifiex_adapter *adapter = priv->adapter;
- u8 *mcs;
- int rx_mcs_supp;
- uint16_t ht_cap_info = le16_to_cpu(ht_cap->ht_cap.cap_info);
uint16_t ht_ext_cap = le16_to_cpu(ht_cap->ht_cap.extended_ht_cap_info);
+ struct ieee80211_supported_band *sband =
+ priv->wdev->wiphy->bands[radio_type];
- /* Convert dev_cap to IEEE80211_HT_CAP */
- if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
- ht_cap_info |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
- else
- ht_cap_info &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+ ht_cap->ht_cap.ampdu_params_info =
+ (sband->ht_cap.ampdu_factor &
+ IEEE80211_HT_AMPDU_PARM_FACTOR)|
+ ((sband->ht_cap.ampdu_density <<
+ IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT) &
+ IEEE80211_HT_AMPDU_PARM_DENSITY);
- if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
- ht_cap_info |= IEEE80211_HT_CAP_SGI_20;
- else
- ht_cap_info &= ~IEEE80211_HT_CAP_SGI_20;
-
- if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
- ht_cap_info |= IEEE80211_HT_CAP_SGI_40;
- else
- ht_cap_info &= ~IEEE80211_HT_CAP_SGI_40;
-
- if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
- ht_cap_info |= IEEE80211_HT_CAP_TX_STBC;
- else
- ht_cap_info &= ~IEEE80211_HT_CAP_TX_STBC;
-
- if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
- ht_cap_info |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
- else
- ht_cap_info &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
-
- if (ISSUPP_GREENFIELD(adapter->hw_dot_11n_dev_cap))
- ht_cap_info |= IEEE80211_HT_CAP_GRN_FLD;
- else
- ht_cap_info &= ~IEEE80211_HT_CAP_GRN_FLD;
-
- ht_cap_info &= ~IEEE80211_HT_CAP_MAX_AMSDU;
- ht_cap_info |= IEEE80211_HT_CAP_SM_PS;
-
- ht_cap->ht_cap.ampdu_params_info |= IEEE80211_HT_AMPDU_PARM_FACTOR;
- ht_cap->ht_cap.ampdu_params_info &= ~IEEE80211_HT_AMPDU_PARM_DENSITY;
-
- rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
-
- mcs = (u8 *)&ht_cap->ht_cap.mcs;
-
- /* Set MCS for 1x1 */
- memset(mcs, 0xff, rx_mcs_supp);
-
- /* Clear all the other values */
- memset(&mcs[rx_mcs_supp], 0,
- sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
+ memcpy((u8 *) &ht_cap->ht_cap.mcs, &sband->ht_cap.mcs,
+ sizeof(sband->ht_cap.mcs));
if (priv->bss_mode == NL80211_IFTYPE_STATION ||
- (ht_cap_info & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
+ (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
/* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
SETHT_MCS32(ht_cap->ht_cap.mcs.rx_mask);
/* Clear RD responder bit */
ht_ext_cap &= ~IEEE80211_HT_EXT_CAP_RD_RESPONDER;
- ht_cap->ht_cap.cap_info = cpu_to_le16(ht_cap_info);
+ ht_cap->ht_cap.cap_info = cpu_to_le16(sband->ht_cap.cap);
ht_cap->ht_cap.extended_ht_cap_info = cpu_to_le16(ht_ext_cap);
}
@@ -391,10 +334,15 @@
struct mwifiex_ie_types_2040bssco *bss_co_2040;
struct mwifiex_ie_types_extcap *ext_cap;
int ret_len = 0;
+ struct ieee80211_supported_band *sband;
+ u8 radio_type;
if (!buffer || !*buffer)
return ret_len;
+ radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
+ sband = priv->wdev->wiphy->bands[radio_type];
+
if (bss_desc->bcn_ht_cap) {
ht_cap = (struct mwifiex_ie_types_htcap *) *buffer;
memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
@@ -406,7 +354,7 @@
sizeof(struct ieee_types_header),
le16_to_cpu(ht_cap->header.len));
- mwifiex_fill_cap_info(priv, ht_cap);
+ mwifiex_fill_cap_info(priv, radio_type, ht_cap);
*buffer += sizeof(struct mwifiex_ie_types_htcap);
ret_len += sizeof(struct mwifiex_ie_types_htcap);
@@ -428,8 +376,8 @@
sizeof(struct ieee_types_header),
le16_to_cpu(ht_info->header.len));
- if (!ISSUPP_CHANWIDTH40
- (priv->adapter->hw_dot_11n_dev_cap))
+ if (!(sband->ht_cap.cap &
+ IEEE80211_HT_CAP_SUP_WIDTH_20_40))
ht_info->ht_info.ht_param &=
~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY |
IEEE80211_HT_PARAM_CHA_SEC_OFFSET);
@@ -451,7 +399,7 @@
chan_list->chan_scan_param[0].radio_type =
mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
- if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap)
+ if ((sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
&& (bss_desc->bcn_ht_info->ht_param &
IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
SET_SECONDARYCHAN(chan_list->chan_scan_param[0].