From: Jouni Malinen <j@w1.fi>
Date: Sun, 14 Jan 2024 15:32:22 +0000 (+0200)
Subject: nl80211: Print driver name in debug output
X-Git-Tag: hostap_2_11~489
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12cdeb501692ad7e8042e29f063582358349f3c1;p=thirdparty%2Fhostap.git

nl80211: Print driver name in debug output

This can be helpful in debugging some driver specific issues.

Signed-off-by: Jouni Malinen <j@w1.fi>
---

diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index a3147bc7c..758d59722 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -2288,6 +2288,26 @@ static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
 	struct wpa_driver_nl80211_data *drv;
 	struct i802_bss *bss;
 	unsigned int i;
+	char path[128], buf[200], *pos;
+	ssize_t len;
+	int ret;
+
+	ret = os_snprintf(path, sizeof(path), "/sys/class/net/%s/device/driver",
+			  ifname);
+	if (!os_snprintf_error(sizeof(path), ret)) {
+		len = readlink(path, buf, sizeof(buf));
+		if (len > 0 && (size_t) len < sizeof(buf)) {
+			buf[len] = '\0';
+			pos = strrchr(buf, '/');
+			if (pos)
+				pos++;
+			else
+				pos = buf;
+			wpa_printf(MSG_DEBUG,
+				   "nl80211: Initialize interface %s (driver: %s)",
+				   ifname, pos);
+		}
+	}
 
 	if (global_priv == NULL)
 		return NULL;