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mac80211: replace revert for 11s compatiblity with upstream fix

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Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
This commit is contained in:
Matthias Schiffer 2018-01-31 13:42:23 +01:00
parent 352c74fcb4
commit bf1032d71f
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GPG key ID: 16EF3F64CB201D9C
2 changed files with 55 additions and 60 deletions
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60
package/kernel/mac80211/patches/324-Revert-wireless-set-correct-mandatory-rate-flags.patch
View file

@ -1,60 +0,0 @@
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Fri, 26 Jan 2018 23:23:37 +0100
Subject: [PATCH] Revert "wireless: set correct mandatory rate flags"
This reverts commit 1bd773c077deeeb2d9ced1fdb6d846169b8e7e4a.
---
net/wireless/util.c | 30 ++++++++++++++++--------------
1 file changed, 16 insertions(+), 14 deletions(-)
diff --git a/net/wireless/util.c b/net/wireless/util.c
index c69160694b6c..2bb37231c8fe 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -157,30 +157,32 @@ static void set_mandatory_flags_band(str
case NL80211_BAND_2GHZ:
want = 7;
for (i = 0; i < sband->n_bitrates; i++) {
- switch (sband->bitrates[i].bitrate) {
- case 10:
- case 20:
- case 55:
- case 110:
+ if (sband->bitrates[i].bitrate == 10) {
sband->bitrates[i].flags |=
IEEE80211_RATE_MANDATORY_B |
IEEE80211_RATE_MANDATORY_G;
want--;
- break;
- case 60:
- case 120:
- case 240:
+ }
+
+ if (sband->bitrates[i].bitrate == 20 ||
+ sband->bitrates[i].bitrate == 55 ||
+ sband->bitrates[i].bitrate == 110 ||
+ sband->bitrates[i].bitrate == 60 ||
+ sband->bitrates[i].bitrate == 120 ||
+ sband->bitrates[i].bitrate == 240) {
sband->bitrates[i].flags |=
IEEE80211_RATE_MANDATORY_G;
want--;
- /* fall through */
- default:
+ }
+
+ if (sband->bitrates[i].bitrate != 10 &&
+ sband->bitrates[i].bitrate != 20 &&
+ sband->bitrates[i].bitrate != 55 &&
+ sband->bitrates[i].bitrate != 110)
sband->bitrates[i].flags |=
IEEE80211_RATE_ERP_G;
- break;
- }
}
- WARN_ON(want != 0 && want != 3);
+ WARN_ON(want != 0 && want != 3 && want != 6);
break;
case NL80211_BAND_60GHZ:
/* check for mandatory HT MCS 1..4 */

55
package/kernel/mac80211/patches/324-cfg80211-use-only-1Mbps-for-basic-rates-in-mesh.patch Normal file
View file

@ -0,0 +1,55 @@
From: Johannes Berg <johannes.berg@intel.com>
Date: Tue, 30 Jan 2018 13:17:38 +0100
Subject: [PATCH] cfg80211: use only 1Mbps for basic rates in mesh
Mesh used to use the mandatory rates as basic rates, but we got
the calculation of mandatory rates wrong until some time ago.
Fix this this broke interoperability with older versions since
now more basic rates are required, and thus the MBSS isn't the
same and the network stops working.
Fix this by simply using only 1Mbps as the basic rate in 2.4GHz.
Since the changed mandatory rates only affected 2.4GHz, this is
all we need to make it work again.
Reported-and-tested-by: Matthias Schiffer <mschiffer@universe-factory.net>
Fixes: 1bd773c077de ("wireless: set correct mandatory rate flags")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
net/wireless/mesh.c | 25 ++++++++++++++++++++++---
1 file changed, 22 insertions(+), 3 deletions(-)
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -169,9 +169,28 @@ int __cfg80211_join_mesh(struct cfg80211
enum nl80211_bss_scan_width scan_width;
struct ieee80211_supported_band *sband =
rdev->wiphy.bands[setup->chandef.chan->band];
- scan_width = cfg80211_chandef_to_scan_width(&setup->chandef);
- setup->basic_rates = ieee80211_mandatory_rates(sband,
- scan_width);
+
+ if (setup->chandef.chan->band == NL80211_BAND_2GHZ) {
+ int i;
+
+ /*
+ * Older versions selected the mandatory rates for
+ * 2.4 GHz as well, but were broken in that only
+ * 1 Mbps was regarded as a mandatory rate. Keep
+ * using just 1 Mbps as the default basic rate for
+ * mesh to be interoperable with older versions.
+ */
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if (sband->bitrates[i].bitrate == 10) {
+ setup->basic_rates = BIT(i);
+ break;
+ }
+ }
+ } else {
+ scan_width = cfg80211_chandef_to_scan_width(&setup->chandef);
+ setup->basic_rates = ieee80211_mandatory_rates(sband,
+ scan_width);
+ }
}
err = cfg80211_chandef_dfs_required(&rdev->wiphy,