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[MAC80211]: implement ERP info change notifications

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zd1211rw and bcm43xx are interested in being notified when ERP IE conditions
change, so that they can reprogram a register which affects how control frames
are transmitted.

This patch adds an interface similar to the one that can be found in softmac.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Daniel Drake
2007-07-27 15:43:24 +02:00
committed by David S. Miller
parent 7e9ed18874
commit d9430a3288
5 changed files with 51 additions and 10 deletions
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10
net/mac80211/ieee80211_sta.c
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@@ -319,6 +319,7 @@ static void ieee80211_handle_erp_ie(struct net_device *dev, u8 erp_value)
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
int use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
int preamble_mode = (erp_value & WLAN_ERP_BARKER_PREAMBLE) != 0;
u8 changes = 0;
if (use_protection != sdata->use_protection) {
if (net_ratelimit()) {
@@ -329,6 +330,7 @@ static void ieee80211_handle_erp_ie(struct net_device *dev, u8 erp_value)
MAC_ARG(ifsta->bssid));
}
sdata->use_protection = use_protection;
changes |= IEEE80211_ERP_CHANGE_PROTECTION;
}
if (!preamble_mode != sdata->short_preamble) {
@@ -341,7 +343,11 @@ static void ieee80211_handle_erp_ie(struct net_device *dev, u8 erp_value)
MAC_ARG(ifsta->bssid));
}
sdata->short_preamble = !preamble_mode;
changes |= IEEE80211_ERP_CHANGE_PREAMBLE;
}
if (changes)
ieee80211_erp_info_change_notify(dev, changes);
}
@@ -400,7 +406,6 @@ static void ieee80211_set_associated(struct net_device *dev,
struct ieee80211_if_sta *ifsta, int assoc)
{
union iwreq_data wrqu;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (ifsta->associated == assoc)
return;
@@ -428,8 +433,7 @@ static void ieee80211_set_associated(struct net_device *dev,
ieee80211_sta_send_associnfo(dev, ifsta);
} else {
netif_carrier_off(dev);
sdata->short_preamble = 0;
sdata->use_protection = 0;
ieee80211_reset_erp_info(dev);
memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
}
wrqu.ap_addr.sa_family = ARPHRD_ETHER;