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authorDaniel Drake <dsd@gentoo.org>2007-07-10 19:32:11 +0200
committerJohn W. Linville <linville@tuxdriver.com>2007-07-12 16:07:26 -0400
commit63fc33ceb0ccc08b3f62d7bfe56a33eb33ca9427 (patch)
tree6fb60af08616b2f4065cdd74b83f43c819f1853c /net/mac80211/ieee80211_ioctl.c
parent5628221caf88e2a052782b042e12da7cd34111b0 (diff)
[PATCH] mac80211: improved 802.11g CTS protection
Currently, CTS protection is partially implemented twice: 1. via prism2 ioctls, only used by hostapd 2. via STA beacon parsing, recorded in sta.use_protection but never used (other than printed in debugfs) Protection control should be implemented on a per-subif basis. For example, a single physical device may be running a soft AP on one channel, and a STA on another. The AP interface should use protection based on what hostapd told it, and the STA interface should use protection based on beacon parsing. These should operate independantly: one subif using protection should not influence the other. To implement this, I moved the use_protection flag into ieee80211_sub_if_data and removed the device-global cts_protect_erp_frames flag. I also made the PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES write operation only available for AP interfaces, to avoid any possibility of the user messing with the behaviour of a STA. 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>
Diffstat (limited to 'net/mac80211/ieee80211_ioctl.c')
-rw-r--r--net/mac80211/ieee80211_ioctl.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/mac80211/ieee80211_ioctl.c b/net/mac80211/ieee80211_ioctl.c
index 9bc209b72d4..5918dd079e1 100644
--- a/net/mac80211/ieee80211_ioctl.c
+++ b/net/mac80211/ieee80211_ioctl.c
@@ -1180,7 +1180,10 @@ static int ieee80211_ioctl_prism2_param(struct net_device *dev,
break;
case PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES:
- local->cts_protect_erp_frames = value;
+ if (sdata->type != IEEE80211_IF_TYPE_AP)
+ ret = -ENOENT;
+ else
+ sdata->use_protection = value;
break;
case PRISM2_PARAM_PREAMBLE:
@@ -1303,7 +1306,7 @@ static int ieee80211_ioctl_get_prism2_param(struct net_device *dev,
break;
case PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES:
- *param = local->cts_protect_erp_frames;
+ *param = sdata->use_protection;
break;
case PRISM2_PARAM_PREAMBLE: