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mac80211: Fix HT channel selection

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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>
This commit is contained in:
Sujith
2008-12-12 11:57:43 +05:30
committed by John W. Linville
parent 420e7fabd9
commit 094d05dc32
13 changed files with 109 additions and 169 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
net/wireless/nl80211.c
View File

@ -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;
}