From 72bdcf34380917260da41e3c49e10edee04bc5cd Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Wed, 26 Nov 2008 16:15:24 +0200 Subject: nl80211: Add frequency configuration (including HT40) 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 Acked-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 13 +++++++++++++ net/mac80211/ieee80211_i.h | 1 + net/mac80211/main.c | 30 ++++++++++++++++++++++++++---- net/mac80211/util.c | 1 + 4 files changed, 41 insertions(+), 4 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 16423f94801..7a7a6c176dc 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1095,6 +1095,18 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy, 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 @@ struct cfg80211_ops mac80211_config_ops = { #endif .change_bss = ieee80211_change_bss, .set_txq_params = ieee80211_set_txq_params, + .set_channel = ieee80211_set_channel, }; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 155a2041001..527205f8c1a 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -626,6 +626,7 @@ 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; 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 cec9b6d3e1c..29c3ecf7e91 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -195,20 +195,42 @@ 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; 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 diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 0f841317c7e..505d68f344c 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -641,6 +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; if (local->sw_scanning || local->hw_scanning) ret = 0; -- cgit v1.2.3-70-g09d2