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From a2426829ce426de82d2fa47071ca41ea81c43307 Mon Sep 17 00:00:00 2001
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Message-Id: <a2426829ce426de82d2fa47071ca41ea81c43307.1527581614.git.davide.caratti@gmail.com>
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From: Jouni Malinen <jouni@qca.qualcomm.com>
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Date: Fri, 1 Dec 2017 20:22:44 +0200
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Subject: [PATCH] nl80211: Fix NL80211_ATTR_SMPS_MODE encoding
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This nl80211 attribute uses NLA_U8 policy in cfg80211 and
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hostapd/wpa_supplicant needs to use same size when writing the
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attribute.
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This fixes AP mode regression triggered by kernel commit "net: netlink:
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Update attr validation to require exact length for some types" in
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v4.15-rc1 that resulted in the following debug log entry when trying to
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enable beaconing:
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nl80211: Beacon set failed: -34 (Numerical result out of range)
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Fixes: da1080d7215f ("nl80211: Advertise and configure SMPS modes")
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Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
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---
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src/drivers/driver_nl80211.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
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index 2ce03ed76..7571e77f0 100644
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--- a/src/drivers/driver_nl80211.c
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+++ b/src/drivers/driver_nl80211.c
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@@ -3957,7 +3957,7 @@ static int wpa_driver_nl80211_set_ap(void *priv,
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smps_mode = NL80211_SMPS_OFF;
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break;
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}
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- if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
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+ if (nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
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goto fail;
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}
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--
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2.17.0
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