From: Jo-Philipp Wich <jo@mein.io>
Date: Thu, 26 Apr 2018 15:12:16 +0000 (+0200)
Subject: nl80211: back out early when receiving FAIL-BUSY reply
X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fiwinfo.git;a=commitdiff_plain;h=2a82f87ac94432b35ae81e7404beb4314be9d235

nl80211: back out early when receiving FAIL-BUSY reply

The wpa_supplicant control socket might reply with "FAIL-BUSY" when
attempting to start a scan while another scanning process is already
running, back out early in this case.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
---

diff --git a/iwinfo_nl80211.c b/iwinfo_nl80211.c
index de5d2b4..ecd2d6a 100644
--- a/iwinfo_nl80211.c
+++ b/iwinfo_nl80211.c
@@ -2223,6 +2223,12 @@ static int nl80211_get_scanlist_wpactl(const char *ifname, char *buf, int *len)
 			/* is another unrelated event, retry */
 			tries--;
 		}
+
+		/* got a failure reply */
+		else if (!strcmp(reply, "FAIL-BUSY\n"))
+		{
+			break;
+		}
 	}
 
 	/* receive and parse scan results if the wait above didn't time out */