Add a new attribute, NL80211_ATTR_BSS_BASIC_RATES, that can be used with
NL80211_CMD_SET_BSS for userspace (e.g., hostapd) to set which rates are
in the basic rate set.
Signed-off-by: Jouni Malinen <[email protected]>
Index: wireless-testing/include/linux/nl80211.h
===================================================================
--- wireless-testing.orig/include/linux/nl80211.h 2008-10-28 19:50:57.000000000 +0200
+++ wireless-testing/include/linux/nl80211.h 2008-10-28 19:57:07.000000000 +0200
@@ -243,6 +243,9 @@
* (u8, 0 or 1)
* @NL80211_ATTR_BSS_SHORT_SLOT_TIME: whether short slot time enabled
* (u8, 0 or 1)
+ * @NL80211_ATTR_BSS_BASIC_RATES: basic rates, array of basic
+ * rates in format defined by IEEE 802.11 7.3.2.2 but without the length
+ * restriction (at most %NL80211_MAX_SUPP_RATES).
*
* @NL80211_ATTR_HT_CAPABILITY: HT Capability information element (from
* association request when used with NL80211_CMD_NEW_STATION)
@@ -307,6 +310,8 @@
NL80211_ATTR_MESH_PARAMS,
+ NL80211_ATTR_BSS_BASIC_RATES,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -318,6 +323,7 @@
* here
*/
#define NL80211_ATTR_HT_CAPABILITY NL80211_ATTR_HT_CAPABILITY
+#define NL80211_ATTR_BSS_BASIC_RATES NL80211_ATTR_BSS_BASIC_RATES
#define NL80211_MAX_SUPP_RATES 32
#define NL80211_MAX_SUPP_REG_RULES 32
Index: wireless-testing/include/net/cfg80211.h
===================================================================
--- wireless-testing.orig/include/net/cfg80211.h 2008-10-28 19:59:34.000000000 +0200
+++ wireless-testing/include/net/cfg80211.h 2008-10-28 20:00:43.000000000 +0200
@@ -280,11 +280,16 @@
* (0 = no, 1 = yes, -1 = do not change)
* @use_short_slot_time: Whether the use of short slot time is allowed
* (0 = no, 1 = yes, -1 = do not change)
+ * @basic_rates: basic rates in IEEE 802.11 format
+ * (or NULL for no change)
+ * @basic_rates_len: number of basic rates
*/
struct bss_parameters {
int use_cts_prot;
int use_short_preamble;
int use_short_slot_time;
+ u8 *basic_rates;
+ u8 basic_rates_len;
};
/**
Index: wireless-testing/net/mac80211/cfg.c
===================================================================
--- wireless-testing.orig/net/mac80211/cfg.c 2008-10-28 20:01:20.000000000 +0200
+++ wireless-testing/net/mac80211/cfg.c 2008-10-28 20:20:42.000000000 +0200
@@ -1048,6 +1048,24 @@
changed |= BSS_CHANGED_ERP_SLOT;
}
+ if (params->basic_rates) {
+ int i, j;
+ u32 rates = 0;
+ struct ieee80211_local *local = wiphy_priv(wiphy);
+ struct ieee80211_supported_band *sband =
+ wiphy->bands[local->oper_channel->band];
+
+ for (i = 0; i < params->basic_rates_len; i++) {
+ int rate = (params->basic_rates[i] & 0x7f) * 5;
+ for (j = 0; j < sband->n_bitrates; j++) {
+ if (sband->bitrates[j].bitrate == rate)
+ rates |= BIT(j);
+ }
+ }
+ sdata->vif.bss_conf.basic_rates = rates;
+ changed |= BSS_CHANGED_BASIC_RATES;
+ }
+
ieee80211_bss_info_change_notify(sdata, changed);
return 0;
Index: wireless-testing/net/wireless/nl80211.c
===================================================================
--- wireless-testing.orig/net/wireless/nl80211.c 2008-10-28 19:56:53.000000000 +0200
+++ wireless-testing/net/wireless/nl80211.c 2008-10-28 19:59:00.000000000 +0200
@@ -95,6 +95,8 @@
[NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
[NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
[NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
+ [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
+ .len = NL80211_MAX_SUPP_RATES },
[NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
@@ -1613,6 +1615,12 @@
if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
params.use_short_slot_time =
nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
+ if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
+ params.basic_rates =
+ nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
+ params.basic_rates_len =
+ nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
+ }
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
if (err)
--
--
Jouni Malinen PGP id EFC895FA