manager/wiphy: Move default if determination

Move the driver database into wiphy.c so it can be extended with other
potential driver quirks.

src/manager.c

@@ -68,25 +68,6 @@ struct wiphy_setup_state {
 
 static struct l_queue *pending_wiphys;
 
-/* With these drivers don't even try creating our interfaces */
-static const char *default_if_driver_list[] = {
-	/*
-	 * The out-of-tree rtl88x2bu crashes the kernel hard.  Seemingly
-	 * many other drivers are built from the same source code so
-	 * blacklist all of them.  Unfortunately there are in-tree drivers
-	 * that also match these names and may be fine.  Use
-	 * UseDefaultInterface to override.
-	 */
-	"rtl81*",
-	"rtl87*",
-	"rtl88*",
-	"rtw_*",
-	"brcmfmac",
-	"bcmsdh_sdmmc",
-
-	NULL,
-};
-
 static void wiphy_setup_state_free(void *data)
 {
 	struct wiphy_setup_state *state = data;
@@ -579,18 +560,9 @@ static void manager_wiphy_dump_done(void *user_data)
 		if (whitelist_filter || blacklist_filter)
 			state->use_default = true;
 
-		if (!state->use_default) {
-			const char *driver = wiphy_get_driver(state->wiphy);
-
-			if (driver) {
-				const char **e;
-
-				for (e = default_if_driver_list; *e; e++)
-					if (fnmatch(*e, driver, 0) == 0)
-						state->use_default = true;
-			} else
-				state->use_default = true;
-		}
+		if (!state->use_default)
+			state->use_default =
+				wiphy_uses_default_if(state->wiphy);
 
 		if (state->use_default)
 			l_info("Wiphy %s will only use the default interface",

src/wiphy.c

@@ -67,6 +67,30 @@ static int mac_randomize_bytes = 6;
 static char regdom_country[2];
 static uint32_t work_ids;
 
+enum driver_flag {
+	DEFAULT_IF = 0x1,
+};
+
+struct driver_info {
+	const char *prefix;
+	unsigned int flags;
+};
+
+/*
+ * The out-of-tree rtl88x2bu crashes the kernel hard if default interface is
+ * destroyed.  It seems many other drivers are built from the same source code
+ * so we set the DEFAULT_IF flag for all of them.  Unfortunately there are
+ * in-tree drivers that also match these names and may be fine.
+ */
+static const struct driver_info driver_infos[] = {
+	{ "rtl81*",          DEFAULT_IF },
+	{ "rtl87*",          DEFAULT_IF },
+	{ "rtl88*",          DEFAULT_IF },
+	{ "rtw_*",           DEFAULT_IF },
+	{ "brcmfmac",        DEFAULT_IF },
+	{ "bcmsdh_sdmmc",    DEFAULT_IF },
+};
+
 struct wiphy {
 	uint32_t id;
 	char name[20];
@@ -84,6 +108,7 @@ struct wiphy {
 	char *model_str;
 	char *vendor_str;
 	char *driver_str;
+	const struct driver_info *driver_info;
 	struct watchlist state_watches;
 	uint8_t extended_capabilities[EXT_CAP_LEN + 2]; /* max bitmap size + IE header */
 	uint8_t *iftype_extended_capabilities[NUM_NL80211_IFTYPES];
@@ -512,6 +537,18 @@ const char *wiphy_get_name(struct wiphy *wiphy)
 	return wiphy->name;
 }
 
+bool wiphy_uses_default_if(struct wiphy *wiphy)
+{
+	if (!wiphy_get_driver(wiphy))
+		return true;
+
+	if (wiphy->driver_info &&
+			wiphy->driver_info->flags & DEFAULT_IF)
+		return true;
+
+	return false;
+}
+
 const uint8_t *wiphy_get_permanent_address(struct wiphy *wiphy)
 {
 	return wiphy->permanent_addr;
@@ -1340,6 +1377,7 @@ static bool wiphy_get_driver_name(struct wiphy *wiphy)
 	L_AUTO_FREE_VAR(char *, driver_link) = NULL;
 	char driver_path[256];
 	ssize_t len;
+	unsigned int i;
 
 	driver_link = l_strdup_printf("/sys/class/ieee80211/%s/device/driver",
 					wiphy->name);
@@ -1352,6 +1390,11 @@ static bool wiphy_get_driver_name(struct wiphy *wiphy)
 
 	driver_path[len] = '\0';
 	wiphy->driver_str = l_strdup(basename(driver_path));
+
+	for (i = 0; i < L_ARRAY_SIZE(driver_infos); i++)
+		if (!fnmatch(driver_infos[i].prefix, wiphy->driver_str, 0))
+			wiphy->driver_info = &driver_infos[i];
+
 	return true;
 }
 

src/wiphy.h

@@ -100,6 +100,7 @@ bool wiphy_supports_qos_set_map(struct wiphy *wiphy);
 bool wiphy_supports_firmware_roam(struct wiphy *wiphy);
 const char *wiphy_get_driver(struct wiphy *wiphy);
 const char *wiphy_get_name(struct wiphy *wiphy);
+bool wiphy_uses_default_if(struct wiphy *wiphy);
 const uint8_t *wiphy_get_permanent_address(struct wiphy *wiphy);
 const uint8_t *wiphy_get_extended_capabilities(struct wiphy *wiphy,
 							uint32_t iftype);