From f438136528482f98535889c9a6f99bbacdd92870 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 28 May 2020 21:34:42 +0200
Subject: [PATCH] cfg80211: require HE capabilities for 6 GHz band
Git-commit: f438136528482f98535889c9a6f99bbacdd92870
Patch-mainline: v5.8-rc1
References: jsc#SLE-13430
On 6 GHz band, HE capabilities must be available for all of
the interface types, otherwise we shouldn't use 6 GHz. Check
this.
Link: https://lore.kernel.org/r/20200528213443.5881cb3c8c4a.I583b54172f91f98d44af64a16c5826fe458cbb27@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
net/wireless/core.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 1651f86db6ca..5b6714460490 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -791,6 +791,7 @@ int wiphy_register(struct wiphy *wiphy)
/* sanity check supported bands/channels */
for (band = 0; band < NUM_NL80211_BANDS; band++) {
u16 types = 0;
+ bool have_he = false;
sband = wiphy->bands[band];
if (!sband)
@@ -859,8 +860,17 @@ int wiphy_register(struct wiphy *wiphy)
return -EINVAL;
types |= iftd->types_mask;
+
+ if (i == 0)
+ have_he = iftd->he_cap.has_he;
+ else
+ have_he = have_he &&
+ iftd->he_cap.has_he;
}
+ if (WARN_ON(!have_he && band == NL80211_BAND_6GHZ))
+ return -EINVAL;
+
have_band = true;
}
--
2.16.4