ExternalVendorCode/openwrt
1
0
Fork 0
mirror of https://github.com/openwrt/openwrt.git synced 2024-12-30 10:39:04 +00:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

hostapd: backport a fix to check for STA STBC capabilities before setting them (fixes #7464)

Browse Source 
SVN-Revision: 22854
This commit is contained in:
Felix Fietkau 2010-08-31 16:16:32 +00:00
parent 8108b387d0
commit d23ca9f0f3
1 changed files with 41 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
package/hostapd/patches/420-stbc_fix_backport.patch Normal file
View File

@ -0,0 +1,41 @@
From: Helmut Schaa <helmut.schaa@googlemail.com>
Date: Sat, 28 Aug 2010 09:25:44 +0000 (+0300)
Subject: hostapd: enable STBC only for STBC capable STAs
X-Git-Url: http://hostap.epitest.fi/gitweb/gitweb.cgi?p=hostap.git;a=commitdiff_plain;h=36af1c7d31bdc5ba4dacacbf32d3c7585665ae2b
hostapd: enable STBC only for STBC capable STAs
hostapd simply used its own STBC configuration in the STA's HT caps. This
resulted in TX STBC being used for STAs not supporting RX STBC, which in
turn resulted in the STA not receiving anything.
Fix this by handling the STBC flags in the same way mac80211 does. Mask
out RX STBC if we don't support TX STBC and vice versa.
Tested only with the nl80211 driver and a STBC incapable STA.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
---
diff --git a/src/ap/ieee802_11_ht.c b/src/ap/ieee802_11_ht.c
index 1b39a6a..b193ee0 100644
--- a/src/ap/ieee802_11_ht.c
+++ b/src/ap/ieee802_11_ht.c
@@ -256,7 +256,15 @@ void hostapd_get_ht_capab(struct hostapd_data *hapd,
cap &= hapd->iconf->ht_capab;
cap |= (hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_DISABLED);
- /* FIXME: Rx STBC needs to be handled specially */
- cap |= (hapd->iconf->ht_capab & HT_CAP_INFO_RX_STBC_MASK);
+ /*
+ * STBC needs to be handled specially
+ * if we don't support RX STBC, mask out TX STBC in the STA's HT caps
+ * if we don't support TX STBC, mask out RX STBC in the STA's HT caps
+ */
+ if (!(hapd->iconf->ht_capab & HT_CAP_INFO_RX_STBC_MASK))
+ cap &= ~HT_CAP_INFO_TX_STBC;
+ if (!(hapd->iconf->ht_capab & HT_CAP_INFO_TX_STBC))
+ cap &= ~HT_CAP_INFO_RX_STBC_MASK;
+
neg_ht_cap->ht_capabilities_info = host_to_le16(cap);
}