iwinfo: fix handling of accessing nl80211 interfaces via radio*

look up device path via uci instead of assuming a direct phy index

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn+ssh://svn.openwrt.org/openwrt/trunk@42759 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 41 insertions, 0 deletions

diff --git a/iwinfo_utils.c b/iwinfo_utils.c
index 4a82433..b313ea2 100644
--- a/iwinfo_utils.c
+++ b/iwinfo_utils.c
@@ -24,6 +24,7 @@
 
 
 static int ioctl_socket = -1;
+struct uci_context *uci_ctx = NULL;
 
 static int iwinfo_ioctl_socket(void)
 {
@@ -365,3 +366,43 @@ void iwinfo_parse_rsn(struct iwinfo_crypto_entry *c, uint8_t *data, uint8_t len,
 	data += 2 + (count * 4);
 	len -= 2 + (count * 4);
 }
+
+struct uci_section *iwinfo_uci_get_radio(const char *name, const char *type)
+{
+	struct uci_ptr ptr = {
+		.package = "wireless",
+		.section = name,
+	};
+	const char *opt;
+
+	if (!uci_ctx) {
+		uci_ctx = uci_alloc_context();
+		if (!uci_ctx)
+			return NULL;
+	}
+
+	memset(&ptr, 0, sizeof(ptr));
+	ptr.package = "wireless";
+	ptr.section = name;
+
+	if (uci_lookup_ptr(uci_ctx, &ptr, NULL, false))
+		return NULL;
+
+	if (!ptr.s || strcmp(ptr.s->type, "wifi-device") != 0)
+		return NULL;
+
+	opt = uci_lookup_option_string(uci_ctx, ptr.s, "type");
+	if (!opt || strcmp(opt, type) != 0)
+		return NULL;
+
+	return ptr.s;
+}
+
+void iwinfo_uci_free(void)
+{
+	if (!uci_ctx)
+		return;
+
+	uci_free_context(uci_ctx);
+	uci_ctx = NULL;
+}