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authorSujith <Sujith.Manoharan@atheros.com>2008-12-12 11:57:43 +0530
committerJohn W. Linville <linville@tuxdriver.com>2008-12-19 15:22:54 -0500
commit094d05dc32fc2930e381189a942016e5561775d9 (patch)
tree4deedbcbe196f88cb8d9fe0cd0755775a7ff0939 /net
parent420e7fabd9c6d907280ed6b3e40eef425c5d8d8d (diff)
mac80211: Fix HT channel selection
HT management is done differently for AP and STA modes, unify to just the ->config() callback since HT is fundamentally a PHY property and cannot be per-BSS. Rename enum nl80211_sec_chan_offset as nl80211_channel_type to denote the channel type ( NO_HT, HT20, HT40+, HT40- ). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/cfg.c4
-rw-r--r--net/mac80211/ht.c35
-rw-r--r--net/mac80211/ieee80211_i.h2
-rw-r--r--net/mac80211/main.c27
-rw-r--r--net/mac80211/mlme.c1
-rw-r--r--net/mac80211/util.c2
-rw-r--r--net/wireless/nl80211.c27
7 files changed, 52 insertions, 46 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 23b5eeaf7bc..3ea0884c943 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1122,12 +1122,12 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy,
static int ieee80211_set_channel(struct wiphy *wiphy,
struct ieee80211_channel *chan,
- enum nl80211_sec_chan_offset sec_chan_offset)
+ enum nl80211_channel_type channel_type)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
local->oper_channel = chan;
- local->oper_sec_chan_offset = sec_chan_offset;
+ local->oper_channel_type = channel_type;
return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
}
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index a1eed7032c9..5f510a13b9f 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -98,6 +98,7 @@ u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
struct ieee80211_bss_ht_conf ht;
u32 changed = 0;
bool enable_ht = true, ht_changed;
+ enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
@@ -112,24 +113,36 @@ u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
ieee80211_channel_to_frequency(hti->control_chan))
enable_ht = false;
- /*
- * XXX: This is totally incorrect when there are multiple virtual
- * interfaces, needs to be fixed later.
- */
- ht_changed = local->hw.conf.ht.enabled != enable_ht;
+ if (enable_ht) {
+ channel_type = NL80211_CHAN_HT20;
+
+ if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
+ (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
+ (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) {
+ switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+ channel_type = NL80211_CHAN_HT40PLUS;
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+ channel_type = NL80211_CHAN_HT40MINUS;
+ break;
+ }
+ }
+ }
+
+ ht_changed = local->hw.conf.ht.enabled != enable_ht ||
+ channel_type != local->hw.conf.ht.channel_type;
+
+ local->oper_channel_type = channel_type;
local->hw.conf.ht.enabled = enable_ht;
+
if (ht_changed)
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_HT);
/* disable HT */
if (!enable_ht)
return 0;
- ht.secondary_channel_offset =
- hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET;
- ht.width_40_ok =
- !(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
- (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
- (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY);
+
ht.operation_mode = le16_to_cpu(hti->operation_mode);
/* if bss configuration changed store the new one */
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 6f59e11d7b3..a7dabaecfc7 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -625,7 +625,7 @@ struct ieee80211_local {
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;
+ enum nl80211_channel_type oper_channel_type;
u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
size_t scan_ssid_len;
struct list_head bss_list;
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 6d8710327d1..a0371caf01c 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -195,37 +195,30 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
struct ieee80211_channel *chan;
int ret = 0;
int power;
- enum nl80211_sec_chan_offset sec_chan_offset;
+ enum nl80211_channel_type channel_type;
might_sleep();
if (local->sw_scanning) {
chan = local->scan_channel;
- sec_chan_offset = NL80211_SEC_CHAN_NO_HT;
+ channel_type = NL80211_CHAN_NO_HT;
} else {
chan = local->oper_channel;
- sec_chan_offset = local->oper_sec_chan_offset;
+ channel_type = local->oper_channel_type;
}
if (chan != local->hw.conf.channel ||
- sec_chan_offset != local->hw.conf.ht.sec_chan_offset) {
+ channel_type != local->hw.conf.ht.channel_type) {
local->hw.conf.channel = chan;
- switch (sec_chan_offset) {
- case NL80211_SEC_CHAN_NO_HT:
+ local->hw.conf.ht.channel_type = channel_type;
+ switch (channel_type) {
+ case NL80211_CHAN_NO_HT:
local->hw.conf.ht.enabled = false;
- local->hw.conf.ht.sec_chan_offset = 0;
break;
- case NL80211_SEC_CHAN_DISABLED:
+ case NL80211_CHAN_HT20:
+ case NL80211_CHAN_HT40MINUS:
+ case NL80211_CHAN_HT40PLUS:
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;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 290b0017ef2..e4d1fca5c72 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -858,6 +858,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
rcu_read_unlock();
local->hw.conf.ht.enabled = false;
+ local->oper_channel_type = NL80211_CHAN_NO_HT;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_HT);
ieee80211_bss_info_change_notify(sdata, changed);
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 505d68f344c..71a8391c54f 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -641,7 +641,7 @@ int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freqMHz)
chan->flags & IEEE80211_CHAN_NO_IBSS)
return ret;
local->oper_channel = chan;
- local->oper_sec_chan_offset = NL80211_SEC_CHAN_NO_HT;
+ local->oper_channel_type = NL80211_CHAN_NO_HT;
if (local->sw_scanning || local->hw_scanning)
ret = 0;
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 93c9b983ce0..1e728fff474 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -60,7 +60,7 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
.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_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
@@ -362,8 +362,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
}
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
- enum nl80211_sec_chan_offset sec_chan_offset =
- NL80211_SEC_CHAN_NO_HT;
+ enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
struct ieee80211_channel *chan;
struct ieee80211_sta_ht_cap *ht_cap;
u32 freq, sec_freq;
@@ -375,13 +374,13 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
result = -EINVAL;
- 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)
+ if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
+ channel_type = nla_get_u32(info->attrs[
+ NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
+ if (channel_type != NL80211_CHAN_NO_HT &&
+ channel_type != NL80211_CHAN_HT20 &&
+ channel_type != NL80211_CHAN_HT40PLUS &&
+ channel_type != NL80211_CHAN_HT40MINUS)
goto bad_res;
}
@@ -392,9 +391,9 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
goto bad_res;
- if (sec_chan_offset == NL80211_SEC_CHAN_BELOW)
+ if (channel_type == NL80211_CHAN_HT40MINUS)
sec_freq = freq - 20;
- else if (sec_chan_offset == NL80211_SEC_CHAN_ABOVE)
+ else if (channel_type == NL80211_CHAN_HT40PLUS)
sec_freq = freq + 20;
else
sec_freq = 0;
@@ -402,7 +401,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap;
/* no HT capabilities */
- if (sec_chan_offset != NL80211_SEC_CHAN_NO_HT &&
+ if (channel_type != NL80211_CHAN_NO_HT &&
!ht_cap->ht_supported)
goto bad_res;
@@ -422,7 +421,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
}
result = rdev->ops->set_channel(&rdev->wiphy, chan,
- sec_chan_offset);
+ channel_type);
if (result)
goto bad_res;
}