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nl80211: allow configuring IBSS beacon interval

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Make the JOIN_IBSS command look at the beacon interval
attribute to see if the user requested a specific beacon
interval, if not default to 100 TU (wext too).

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-04-22 17:45:38 +02:00
committed by John W. Linville
parent e255d5eb2b
commit 8e30bc55de
4 changed files with 19 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
include/linux/nl80211.h
View File

@@ -230,7 +230,9 @@
* and optionally a MAC (as BSSID) and FREQ_FIXED attribute if those * and optionally a MAC (as BSSID) and FREQ_FIXED attribute if those
* should be fixed rather than automatically determined. Can only be * should be fixed rather than automatically determined. Can only be
* executed on a network interface that is UP, and fixed BSSID/FREQ * executed on a network interface that is UP, and fixed BSSID/FREQ
* may be rejected. * may be rejected. Another optional parameter is the beacon interval,
* given in the %NL80211_ATTR_BEACON_INTERVAL attribute, which if not
* given defaults to 100 TU (102.4ms).
* @NL80211_CMD_LEAVE_IBSS: Leave the IBSS -- no special arguments, the IBSS is * @NL80211_CMD_LEAVE_IBSS: Leave the IBSS -- no special arguments, the IBSS is
* determined by the network interface. * determined by the network interface.
* *

2
include/net/cfg80211.h
View File

@@ -733,6 +733,7 @@ struct cfg80211_disassoc_request {
* IBSSs to join on other channels. * IBSSs to join on other channels.
* @ie: information element(s) to include in the beacon * @ie: information element(s) to include in the beacon
* @ie_len: length of that * @ie_len: length of that
* @beacon_interval: beacon interval to use
*/ */
struct cfg80211_ibss_params { struct cfg80211_ibss_params {
u8 *ssid; u8 *ssid;
@@ -740,6 +741,7 @@ struct cfg80211_ibss_params {
struct ieee80211_channel *channel; struct ieee80211_channel *channel;
u8 *ie; u8 *ie;
u8 ssid_len, ie_len; u8 ssid_len, ie_len;
u16 beacon_interval;
bool channel_fixed; bool channel_fixed;
}; };

3
net/wireless/ibss.c
View File

@@ -116,6 +116,9 @@ static int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
enum ieee80211_band band; enum ieee80211_band band;
int i; int i;
if (!wdev->wext.beacon_interval)
wdev->wext.beacon_interval = 100;
/* try to find an IBSS channel if none requested ... */ /* try to find an IBSS channel if none requested ... */
if (!wdev->wext.channel) { if (!wdev->wext.channel) {
for (band = 0; band < IEEE80211_NUM_BANDS; band++) { for (band = 0; band < IEEE80211_NUM_BANDS; band++) {

12
net/wireless/nl80211.c
View File

@@ -3159,6 +3159,8 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
struct wiphy *wiphy; struct wiphy *wiphy;
int err; int err;
memset(&ibss, 0, sizeof(ibss));
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL; return -EINVAL;
@@ -3167,6 +3169,15 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
!nla_len(info->attrs[NL80211_ATTR_SSID])) !nla_len(info->attrs[NL80211_ATTR_SSID]))
return -EINVAL; return -EINVAL;
ibss.beacon_interval = 100;
if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
ibss.beacon_interval =
nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
return -EINVAL;
}
rtnl_lock(); rtnl_lock();
err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
@@ -3189,7 +3200,6 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
} }
wiphy = &drv->wiphy; wiphy = &drv->wiphy;
memset(&ibss, 0, sizeof(ibss));
if (info->attrs[NL80211_ATTR_MAC]) if (info->attrs[NL80211_ATTR_MAC])
ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);