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wpa_supplicant: Allow disabling LDPC 

Allows user to disable LDPC coding.
This possibility is useful for testing purpose.

Signed-off-by: Pawel Kulakowski <pawel.kulakowski@tieto.com>
This commit is contained in:
Pawel Kulakowski 2014-04-01 07:16:00 +02:00 committed by Jouni Malinen
parent 72300408d4
commit 39a5800f7c
4 changed files with 37 additions and 0 deletions
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2
wpa_supplicant/config.c
View File

@ -1701,6 +1701,7 @@ static const struct parse_data ssid_fields[] = {
{ INT_RANGE(disable_ht, 0, 1) },
{ INT_RANGE(disable_ht40, -1, 1) },
{ INT_RANGE(disable_sgi, 0, 1) },
{ INT_RANGE(disable_ldpc, 0, 1) },
{ INT_RANGE(disable_max_amsdu, -1, 1) },
{ INT_RANGE(ampdu_factor, -1, 3) },
{ INT_RANGE(ampdu_density, -1, 7) },
@ -2157,6 +2158,7 @@ void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
ssid->disable_ht = DEFAULT_DISABLE_HT;
ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
ssid->disable_sgi = DEFAULT_DISABLE_SGI;
ssid->disable_ldpc = DEFAULT_DISABLE_LDPC;
ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;

9
wpa_supplicant/config_ssid.h
View File

@ -30,6 +30,7 @@
#define DEFAULT_DISABLE_HT 0
#define DEFAULT_DISABLE_HT40 0
#define DEFAULT_DISABLE_SGI 0
#define DEFAULT_DISABLE_LDPC 0
#define DEFAULT_DISABLE_MAX_AMSDU -1 /* no change */
#define DEFAULT_AMPDU_FACTOR -1 /* no change */
#define DEFAULT_AMPDU_DENSITY -1 /* no change */
@ -524,6 +525,14 @@ struct wpa_ssid {
*/
int disable_sgi;
/**
* disable_ldpc - Disable LDPC for this network
*
* By default, use it if it is available, but this can be configured
* to 1 to have it disabled.
*/
int disable_ldpc;
/**
* disable_max_amsdu - Disable MAX A-MSDU
*

22
wpa_supplicant/wpa_supplicant.c
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@ -2922,6 +2922,27 @@ static int wpa_set_disable_sgi(struct wpa_supplicant *wpa_s,
}
static int wpa_set_disable_ldpc(struct wpa_supplicant *wpa_s,
struct ieee80211_ht_capabilities *htcaps,
struct ieee80211_ht_capabilities *htcaps_mask,
int disabled)
{
/* Masking these out disables LDPC */
u16 msk = host_to_le16(HT_CAP_INFO_LDPC_CODING_CAP);
wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ldpc: %d", disabled);
if (disabled)
htcaps->ht_capabilities_info &= ~msk;
else
htcaps->ht_capabilities_info |= msk;
htcaps_mask->ht_capabilities_info |= msk;
return 0;
}
void wpa_supplicant_apply_ht_overrides(
struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
struct wpa_driver_associate_params *params)
@ -2945,6 +2966,7 @@ void wpa_supplicant_apply_ht_overrides(
wpa_set_ampdu_density(wpa_s, htcaps, htcaps_mask, ssid->ampdu_density);
wpa_set_disable_ht40(wpa_s, htcaps, htcaps_mask, ssid->disable_ht40);
wpa_set_disable_sgi(wpa_s, htcaps, htcaps_mask, ssid->disable_sgi);
wpa_set_disable_ldpc(wpa_s, htcaps, htcaps_mask, ssid->disable_ldpc);
}
#endif /* CONFIG_HT_OVERRIDES */

4
wpa_supplicant/wpa_supplicant.conf
View File

@ -947,6 +947,10 @@ fast_reauth=1
# 0 = SGI enabled (if AP supports it)
# 1 = SGI disabled
#
# disable_ldpc: Whether LDPC should be disabled.
# 0 = LDPC enabled (if AP supports it)
# 1 = LDPC disabled
#
# ht_mcs: Configure allowed MCS rates.
# Parsed as an array of bytes, in base-16 (ascii-hex)
# ht_mcs="" // Use all available (default)