mac80211: reorder patches putting backports first

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 55 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/369-cfg80211-use-only-1Mbps-for-basic-rates-in-mesh.patch b/package/kernel/mac80211/patches/369-cfg80211-use-only-1Mbps-for-basic-rates-in-mesh.patch
new file mode 100644
index 0000000..bc4174e
--- /dev/null
+++ b/package/kernel/mac80211/patches/369-cfg80211-use-only-1Mbps-for-basic-rates-in-mesh.patch
@@ -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,