linux-kernel - [PATCH AUTOSEL 4.9 16/38] mac80211_hwsim: do not omit multicast announce of first added radio

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Date:   Tue, 16 Oct 2018 00:15:00 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Martin Willi <martin@...ongswan.org>,
        Johannes Berg <johannes.berg@...el.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.9 16/38] mac80211_hwsim: do not omit multicast announce of first added radio

From: Martin Willi <martin@...ongswan.org>

[ Upstream commit 28ef8b49a338dc1844e86b7954cfffc7dfa2660a ]

The allocation of hwsim radio identifiers uses a post-increment from 0,
so the first radio has idx 0. This idx is explicitly excluded from
multicast announcements ever since, but it is unclear why.

Drop that idx check and announce the first radio as well. This makes
userspace happy if it relies on these events.

Signed-off-by: Martin Willi <martin@...ongswan.org>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/mac80211_hwsim.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 4bb36dc73433..cbb3e902e347 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -2665,8 +2665,7 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
 	list_add_tail(&data->list, &hwsim_radios);
 	spin_unlock_bh(&hwsim_radio_lock);
 
-	if (idx > 0)
-		hwsim_mcast_new_radio(idx, info, param);
+	hwsim_mcast_new_radio(idx, info, param);
 
 	return idx;
 
-- 
2.17.1