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add two patches for ath9k 802.11n AP mode

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SVN-Revision: 13497
This commit is contained in:
Imre Kaloz 2008-12-03 10:21:20 +00:00
parent 4c98f47b14
commit ac791ee623
2 changed files with 513 additions and 0 deletions
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303
package/mac80211/patches/330-nl80211_ht40.patch Normal file
View file

@ -0,0 +1,303 @@
This patch adds new NL80211_CMD_SET_WIPHY attributes
NL80211_ATTR_WIPHY_FREQ and NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET to allow
userspace to set the operating channel (e.g., hostapd for AP mode).
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Index: wireless-testing/include/linux/nl80211.h
===================================================================
--- wireless-testing.orig/include/linux/nl80211.h 2008-11-26 15:15:31.000000000 +0200
+++ wireless-testing/include/linux/nl80211.h 2008-11-26 15:16:59.000000000 +0200
@@ -26,8 +26,9 @@
* @NL80211_CMD_GET_WIPHY: request information about a wiphy or dump request
* to get a list of all present wiphys.
* @NL80211_CMD_SET_WIPHY: set wiphy parameters, needs %NL80211_ATTR_WIPHY or
- * %NL80211_ATTR_IFINDEX; can be used to set %NL80211_ATTR_WIPHY_NAME
- * and/or %NL80211_ATTR_WIPHY_TXQ_PARAMS.
+ * %NL80211_ATTR_IFINDEX; can be used to set %NL80211_ATTR_WIPHY_NAME,
+ * %NL80211_ATTR_WIPHY_TXQ_PARAMS, %NL80211_ATTR_WIPHY_FREQ, and/or
+ * %NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET.
* @NL80211_CMD_NEW_WIPHY: Newly created wiphy, response to get request
* or rename notification. Has attributes %NL80211_ATTR_WIPHY and
* %NL80211_ATTR_WIPHY_NAME.
@@ -180,6 +181,14 @@
* /sys/class/ieee80211/<phyname>/index
* @NL80211_ATTR_WIPHY_NAME: wiphy name (used for renaming)
* @NL80211_ATTR_WIPHY_TXQ_PARAMS: a nested array of TX queue parameters
+ * @NL80211_ATTR_WIPHY_FREQ: frequency of the selected channel in MHz
+ * @NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET: included with NL80211_ATTR_WIPHY_FREQ
+ * if HT20 or HT40 are allowed (i.e., 802.11n disabled if not included):
+ * NL80211_SEC_CHAN_NO_HT = HT not allowed (i.e., same as not including
+ * this attribute)
+ * NL80211_SEC_CHAN_DISABLED = HT20 only
+ * NL80211_SEC_CHAN_BELOW = secondary channel is below the primary channel
+ * NL80211_SEC_CHAN_ABOVE = secondary channel is above the primary channel
*
* @NL80211_ATTR_IFINDEX: network interface index of the device to operate on
* @NL80211_ATTR_IFNAME: network interface name
@@ -315,6 +324,8 @@
NL80211_ATTR_BSS_BASIC_RATES,
NL80211_ATTR_WIPHY_TXQ_PARAMS,
+ NL80211_ATTR_WIPHY_FREQ,
+ NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
/* add attributes here, update the policy in nl80211.c */
@@ -329,6 +340,8 @@
#define NL80211_ATTR_HT_CAPABILITY NL80211_ATTR_HT_CAPABILITY
#define NL80211_ATTR_BSS_BASIC_RATES NL80211_ATTR_BSS_BASIC_RATES
#define NL80211_ATTR_WIPHY_TXQ_PARAMS NL80211_ATTR_WIPHY_TXQ_PARAMS
+#define NL80211_ATTR_WIPHY_FREQ NL80211_ATTR_WIPHY_FREQ
+#define NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET
#define NL80211_MAX_SUPP_RATES 32
#define NL80211_MAX_SUPP_REG_RULES 32
@@ -742,4 +755,10 @@
NL80211_TXQ_Q_BK
};
+enum nl80211_sec_chan_offset {
+ NL80211_SEC_CHAN_NO_HT /* No HT */,
+ NL80211_SEC_CHAN_DISABLED /* HT20 only */,
+ NL80211_SEC_CHAN_BELOW /* HT40- */,
+ NL80211_SEC_CHAN_ABOVE /* HT40+ */
+};
#endif /* __LINUX_NL80211_H */
Index: wireless-testing/include/net/cfg80211.h
===================================================================
--- wireless-testing.orig/include/net/cfg80211.h 2008-11-26 15:15:31.000000000 +0200
+++ wireless-testing/include/net/cfg80211.h 2008-11-26 15:29:50.000000000 +0200
@@ -392,6 +392,9 @@
/* from net/wireless.h */
struct wiphy;
+/* from net/ieee80211.h */
+struct ieee80211_channel;
+
/**
* struct cfg80211_ops - backend description for wireless configuration
*
@@ -450,6 +453,8 @@
* @change_bss: Modify parameters for a given BSS.
*
* @set_txq_params: Set TX queue parameters
+ *
+ * @set_channel: Set channel
*/
struct cfg80211_ops {
int (*add_virtual_intf)(struct wiphy *wiphy, char *name,
@@ -513,6 +518,10 @@
int (*set_txq_params)(struct wiphy *wiphy,
struct ieee80211_txq_params *params);
+
+ int (*set_channel)(struct wiphy *wiphy,
+ struct ieee80211_channel *chan,
+ enum nl80211_sec_chan_offset);
};
#endif /* __NET_CFG80211_H */
Index: wireless-testing/net/mac80211/cfg.c
===================================================================
--- wireless-testing.orig/net/mac80211/cfg.c 2008-11-26 15:15:31.000000000 +0200
+++ wireless-testing/net/mac80211/cfg.c 2008-11-26 15:19:34.000000000 +0200
@@ -1095,6 +1095,18 @@
return 0;
}
+static int ieee80211_set_channel(struct wiphy *wiphy,
+ struct ieee80211_channel *chan,
+ enum nl80211_sec_chan_offset sec_chan_offset)
+{
+ struct ieee80211_local *local = wiphy_priv(wiphy);
+
+ local->oper_channel = chan;
+ local->oper_sec_chan_offset = sec_chan_offset;
+
+ return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+}
+
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@@ -1122,4 +1134,5 @@
#endif
.change_bss = ieee80211_change_bss,
.set_txq_params = ieee80211_set_txq_params,
+ .set_channel = ieee80211_set_channel,
};
Index: wireless-testing/net/wireless/nl80211.c
===================================================================
--- wireless-testing.orig/net/wireless/nl80211.c 2008-11-26 15:15:31.000000000 +0200
+++ wireless-testing/net/wireless/nl80211.c 2008-11-26 15:31:31.000000000 +0200
@@ -59,6 +59,8 @@
[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
.len = BUS_ID_SIZE-1 },
[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
+ [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
+ [NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET] = { .type = NLA_U32 },
[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
@@ -359,6 +361,61 @@
}
}
+ if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
+ enum nl80211_sec_chan_offset sec_chan_offset =
+ NL80211_SEC_CHAN_NO_HT;
+ struct ieee80211_channel *chan;
+ u32 freq, sec_freq;
+
+ if (!rdev->ops->set_channel) {
+ result = -EOPNOTSUPP;
+ goto bad_res;
+ }
+
+ if (info->attrs[NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET]) {
+ sec_chan_offset = nla_get_u32(
+ info->attrs[
+ NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET]);
+ if (sec_chan_offset != NL80211_SEC_CHAN_NO_HT &&
+ sec_chan_offset != NL80211_SEC_CHAN_DISABLED &&
+ sec_chan_offset != NL80211_SEC_CHAN_BELOW &&
+ sec_chan_offset != NL80211_SEC_CHAN_ABOVE) {
+ result = -EINVAL;
+ goto bad_res;
+ }
+ }
+
+ freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
+ chan = ieee80211_get_channel(&rdev->wiphy, freq);
+ if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
+ /* Primary channel not allowed */
+ result = -EINVAL;
+ goto bad_res;
+ }
+ if (sec_chan_offset == NL80211_SEC_CHAN_BELOW)
+ sec_freq = freq - 20;
+ else if (sec_chan_offset == NL80211_SEC_CHAN_ABOVE)
+ sec_freq = freq + 20;
+ else
+ sec_freq = 0;
+
+ if (sec_freq) {
+ struct ieee80211_channel *schan;
+ schan = ieee80211_get_channel(&rdev->wiphy, sec_freq);
+ if (!schan || schan->flags & IEEE80211_CHAN_DISABLED) {
+ /* Secondary channel not allowed */
+ result = -EINVAL;
+ goto bad_res;
+ }
+ }
+
+ result = rdev->ops->set_channel(&rdev->wiphy, chan,
+ sec_chan_offset);
+ if (result)
+ goto bad_res;
+ }
+
+
bad_res:
cfg80211_put_dev(rdev);
return result;
Index: wireless-testing/include/net/mac80211.h
===================================================================
--- wireless-testing.orig/include/net/mac80211.h 2008-11-26 15:15:31.000000000 +0200
+++ wireless-testing/include/net/mac80211.h 2008-11-26 15:15:47.000000000 +0200
@@ -507,6 +507,9 @@
struct ieee80211_ht_conf {
bool enabled;
+ int sec_chan_offset; /* 0 = HT40 disabled; -1 = HT40 enabled, secondary
+ * channel below primary; 1 = HT40 enabled,
+ * secondary channel above primary */
};
/**
Index: wireless-testing/net/mac80211/util.c
===================================================================
--- wireless-testing.orig/net/mac80211/util.c 2008-11-26 15:15:31.000000000 +0200
+++ wireless-testing/net/mac80211/util.c 2008-11-26 15:20:26.000000000 +0200
@@ -641,6 +641,7 @@
chan->flags & IEEE80211_CHAN_NO_IBSS)
return ret;
local->oper_channel = chan;
+ local->oper_sec_chan_offset = NL80211_SEC_CHAN_NO_HT;
if (local->sw_scanning || local->hw_scanning)
ret = 0;
Index: wireless-testing/net/mac80211/ieee80211_i.h
===================================================================
--- wireless-testing.orig/net/mac80211/ieee80211_i.h 2008-11-26 15:15:31.000000000 +0200
+++ wireless-testing/net/mac80211/ieee80211_i.h 2008-11-26 15:20:12.000000000 +0200
@@ -626,6 +626,7 @@
struct delayed_work scan_work;
struct ieee80211_sub_if_data *scan_sdata;
struct ieee80211_channel *oper_channel, *scan_channel;
+ enum nl80211_sec_chan_offset oper_sec_chan_offset;
u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
size_t scan_ssid_len;
struct list_head bss_list;
Index: wireless-testing/net/mac80211/main.c
===================================================================
--- wireless-testing.orig/net/mac80211/main.c 2008-11-26 15:15:31.000000000 +0200
+++ wireless-testing/net/mac80211/main.c 2008-11-26 15:29:09.000000000 +0200
@@ -195,20 +195,42 @@
struct ieee80211_channel *chan;
int ret = 0;
int power;
+ enum nl80211_sec_chan_offset sec_chan_offset;
might_sleep();
- if (local->sw_scanning)
+ if (local->sw_scanning) {
chan = local->scan_channel;
- else
+ sec_chan_offset = NL80211_SEC_CHAN_NO_HT;
+ } else {
chan = local->oper_channel;
+ sec_chan_offset = local->oper_sec_chan_offset;
+ }
- if (chan != local->hw.conf.channel) {
+ if (chan != local->hw.conf.channel ||
+ sec_chan_offset != local->hw.conf.ht.sec_chan_offset) {
local->hw.conf.channel = chan;
+ switch (sec_chan_offset) {
+ case NL80211_SEC_CHAN_NO_HT:
+ local->hw.conf.ht.enabled = false;
+ local->hw.conf.ht.sec_chan_offset = 0;
+ break;
+ case NL80211_SEC_CHAN_DISABLED:
+ local->hw.conf.ht.enabled = true;
+ local->hw.conf.ht.sec_chan_offset = 0;
+ break;
+ case NL80211_SEC_CHAN_BELOW:
+ local->hw.conf.ht.enabled = true;
+ local->hw.conf.ht.sec_chan_offset = -1;
+ break;
+ case NL80211_SEC_CHAN_ABOVE:
+ local->hw.conf.ht.enabled = true;
+ local->hw.conf.ht.sec_chan_offset = 1;
+ break;
+ }
changed |= IEEE80211_CONF_CHANGE_CHANNEL;
}
-
if (!local->hw.conf.power_level)
power = chan->max_power;
else
--
Jouni Malinen PGP id EFC895FA
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210
package/mac80211/patches/340-ath9k_ap_rc.patch Normal file
View file

@ -0,0 +1,210 @@
Hostapd now passes the HT parameters through the config()
callback, use these to set the appropriate channel in AP mode.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
---
Note: This patch depends on [PATCHv2] nl80211: Add frequency configuration (including HT40)
posted by Jouni.
drivers/net/wireless/ath9k/main.c | 60 ++++++++++++++++++++++++++----------
drivers/net/wireless/ath9k/rc.c | 55 +++++++++++++++++++++++++++++----
2 files changed, 91 insertions(+), 24 deletions(-)
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 6e103d5..d1ddb07 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -622,35 +622,35 @@ static int ath_get_channel(struct ath_softc *sc,
return -1;
}
+/* ext_chan_offset: (-1, 0, 1) (below, none, above) */
+
static u32 ath_get_extchanmode(struct ath_softc *sc,
struct ieee80211_channel *chan,
- struct ieee80211_bss_conf *bss_conf)
+ int ext_chan_offset,
+ enum ath9k_ht_macmode tx_chan_width)
{
u32 chanmode = 0;
- u8 ext_chan_offset = bss_conf->ht.secondary_channel_offset;
- enum ath9k_ht_macmode tx_chan_width = (bss_conf->ht.width_40_ok) ?
- ATH9K_HT_MACMODE_2040 : ATH9K_HT_MACMODE_20;
switch (chan->band) {
case IEEE80211_BAND_2GHZ:
- if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE) &&
+ if ((ext_chan_offset == 0) &&
(tx_chan_width == ATH9K_HT_MACMODE_20))
chanmode = CHANNEL_G_HT20;
- if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) &&
+ if ((ext_chan_offset == 1) &&
(tx_chan_width == ATH9K_HT_MACMODE_2040))
chanmode = CHANNEL_G_HT40PLUS;
- if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) &&
+ if ((ext_chan_offset == -1) &&
(tx_chan_width == ATH9K_HT_MACMODE_2040))
chanmode = CHANNEL_G_HT40MINUS;
break;
case IEEE80211_BAND_5GHZ:
- if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE) &&
+ if ((ext_chan_offset == 0) &&
(tx_chan_width == ATH9K_HT_MACMODE_20))
chanmode = CHANNEL_A_HT20;
- if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) &&
+ if ((ext_chan_offset == 1) &&
(tx_chan_width == ATH9K_HT_MACMODE_2040))
chanmode = CHANNEL_A_HT40PLUS;
- if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) &&
+ if ((ext_chan_offset == -1) &&
(tx_chan_width == ATH9K_HT_MACMODE_2040))
chanmode = CHANNEL_A_HT40MINUS;
break;
@@ -841,6 +841,18 @@ static void ath9k_ht_conf(struct ath_softc *sc,
}
}
+static inline int ath_sec_offset(u8 ext_offset)
+{
+ if (ext_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE)
+ return 0;
+ else if (ext_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
+ return 1;
+ else if (ext_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
+ return -1;
+
+ return 0;
+}
+
static void ath9k_bss_assoc_info(struct ath_softc *sc,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf)
@@ -893,13 +905,14 @@ static void ath9k_bss_assoc_info(struct ath_softc *sc,
}
if (hw->conf.ht.enabled) {
- sc->sc_ah->ah_channels[pos].chanmode =
- ath_get_extchanmode(sc, curchan, bss_conf);
+ int offset =
+ ath_sec_offset(bss_conf->ht.secondary_channel_offset);
+ sc->tx_chan_width = (bss_conf->ht.width_40_ok) ?
+ ATH9K_HT_MACMODE_2040 : ATH9K_HT_MACMODE_20;
- if (bss_conf->ht.width_40_ok)
- sc->tx_chan_width = ATH9K_HT_MACMODE_2040;
- else
- sc->tx_chan_width = ATH9K_HT_MACMODE_20;
+ sc->sc_ah->ah_channels[pos].chanmode =
+ ath_get_extchanmode(sc, curchan,
+ offset, sc->tx_chan_width);
} else {
sc->sc_ah->ah_channels[pos].chanmode =
(curchan->band == IEEE80211_BAND_2GHZ) ?
@@ -2172,9 +2185,22 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
(curchan->band == IEEE80211_BAND_2GHZ) ?
CHANNEL_G : CHANNEL_A;
- if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
+ if ((sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP) &&
+ (conf->ht.enabled)) {
+ sc->tx_chan_width = (!!conf->ht.sec_chan_offset) ?
+ ATH9K_HT_MACMODE_2040 : ATH9K_HT_MACMODE_20;
+
+ sc->sc_ah->ah_channels[pos].chanmode =
+ ath_get_extchanmode(sc, curchan,
+ conf->ht.sec_chan_offset,
+ sc->tx_chan_width);
+ }
+
+ if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0) {
DPRINTF(sc, ATH_DBG_FATAL,
"%s: Unable to set channel\n", __func__);
+ return -EINVAL;
+ }
}
if (changed & IEEE80211_CONF_CHANGE_HT)
diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c
index 93dfea8..7c08583 100644
--- a/drivers/net/wireless/ath9k/rc.c
+++ b/drivers/net/wireless/ath9k/rc.c
@@ -1304,6 +1304,38 @@ static void ath_rc_tx_status(struct ath_softc *sc,
xretries, long_retry);
}
+static struct ath_rate_table *ath_choose_rate_table(struct ath_softc *sc,
+ enum ieee80211_band band,
+ bool is_ht, bool is_cw_40)
+{
+ int mode = 0;
+
+ switch(band) {
+ case IEEE80211_BAND_2GHZ:
+ mode = ATH9K_MODE_11G;
+ if (is_ht)
+ mode = ATH9K_MODE_11NG_HT20;
+ if (is_cw_40)
+ mode = ATH9K_MODE_11NG_HT40PLUS;
+ break;
+ case IEEE80211_BAND_5GHZ:
+ mode = ATH9K_MODE_11A;
+ if (is_ht)
+ mode = ATH9K_MODE_11NA_HT20;
+ if (is_cw_40)
+ mode = ATH9K_MODE_11NA_HT40PLUS;
+ break;
+ default:
+ DPRINTF(sc, ATH_DBG_RATE, "Invalid band\n");
+ return NULL;
+ }
+
+ BUG_ON(mode >= ATH9K_MODE_MAX);
+
+ DPRINTF(sc, ATH_DBG_RATE, "Choosing rate table for mode: %d\n", mode);
+ return sc->hw_rate_table[mode];
+}
+
static void ath_rc_init(struct ath_softc *sc,
struct ath_rate_priv *ath_rc_priv,
struct ieee80211_supported_band *sband,
@@ -1314,16 +1346,25 @@ static void ath_rc_init(struct ath_softc *sc,
u8 *ht_mcs = (u8 *)&ath_rc_priv->neg_ht_rates;
u8 i, j, k, hi = 0, hthi = 0;
- rate_table = sc->hw_rate_table[sc->sc_curmode];
+ /* FIXME: Adhoc */
+ if ((sc->sc_ah->ah_opmode == ATH9K_M_STA) ||
+ (sc->sc_ah->ah_opmode == ATH9K_M_IBSS)) {
+ bool is_cw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+ rate_table = ath_choose_rate_table(sc, sband->band,
+ sta->ht_cap.ht_supported,
+ is_cw_40);
+ } else if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP) {
+ /* sc_curmode would be set on init through config() */
+ rate_table = sc->hw_rate_table[sc->sc_curmode];
+ }
- if (sta->ht_cap.ht_supported) {
- if (sband->band == IEEE80211_BAND_2GHZ)
- rate_table = sc->hw_rate_table[ATH9K_MODE_11NG_HT20];
- else
- rate_table = sc->hw_rate_table[ATH9K_MODE_11NA_HT20];
+ if (!rate_table) {
+ DPRINTF(sc, ATH_DBG_FATAL, "Rate table not initialized\n");
+ return;
+ }
+ if (sta->ht_cap.ht_supported) {
ath_rc_priv->ht_cap = (WLAN_RC_HT_FLAG | WLAN_RC_DS_FLAG);
-
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
ath_rc_priv->ht_cap |= WLAN_RC_40_FLAG;
}
--
1.6.0.3
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