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[PATCH] iw: Print Interworking IE details in scan results.

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From: Ben Greear <greearb@xxxxxxxxxxxxxxx>

Output looks like:

	802.11u Interworking:
		Network Options: 0xf1
			Network Type: 1 (Private with Guest)
			Internet
			ASRA
			ESR
			UESA
		Venu Group: 2 (Business)
		Venu Type: 1
		HESSID: 00:00:00:00:00:01

Signed-off-by: Ben Greear <greearb@xxxxxxxxxxxxxxx>
---
:100644 100644 af21cbc... 1894769... M	scan.c
 scan.c |   64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 64 insertions(+), 0 deletions(-)

diff --git a/scan.c b/scan.c
index af21cbc..1894769 100644
--- a/scan.c
+++ b/scan.c
@@ -614,6 +614,69 @@ static void print_ht_capa(const uint8_t type, uint8_t len, const uint8_t *data)
 	print_ht_mcs(data + 3);
 }
 
+static const char* ntype_11u(uint8_t t) {
+	switch (t) {
+	case 0: return "Private";
+	case 1: return "Private with Guest";
+	case 2: return "Chargeable Public";
+	case 3: return "Free Public";
+	case 4: return "Personal Device";
+	case 5: return "Emergency Services Only";
+	case 14: return "Test or Experimental";
+	case 15: return "Wildcard";
+	default: return "Reserved";
+	}
+}
+
+static const char* vgroup_11u(uint8_t t) {
+	switch (t) {
+	case 0: return "Unspecified";
+	case 1: return "Assembly";
+	case 2: return "Business";
+	case 3: return "Educational";
+	case 4: return "Factory and Industrial";
+	case 5: return "Institutional";
+	case 6: return "Mercantile";
+	case 7: return "Residential";
+	case 8: return "Storage";
+	case 9: return "Utility and Miscellaneous";
+	case 10: return "Vehicular";
+	case 11: return "Outdoor";
+	default: return "Reserved";
+	}
+}
+
+static void print_interworking(const uint8_t type, uint8_t len, const uint8_t *data)
+{
+	/* See Section 7.3.2.92 in the 802.11u spec. */
+	printf("\n");
+	if (len >= 1) {
+		uint8_t ano = data[0];
+		printf("\t\tNetwork Options: 0x%hx\n", (unsigned short)(ano));
+		printf("\t\t\tNetwork Type: %i (%s)\n",
+		       (int)(ano & 0xf), ntype_11u(ano & 0xf));
+		if (ano & (1<<4))
+			printf("\t\t\tInternet\n");
+		if (ano & (1<<5))
+			printf("\t\t\tASRA\n");
+		if (ano & (1<<6))
+			printf("\t\t\tESR\n");
+		if (ano & (1<<7))
+			printf("\t\t\tUESA\n");
+	}
+	if ((len == 3) || (len == 9)) {
+		printf("\t\tVenue Group: %i (%s)\n",
+		       (int)(data[1]), vgroup_11u(data[1]));
+		printf("\t\tVenue Type: %i\n", (int)(data[2]));
+	}
+	if (len == 9)
+		printf("\t\tHESSID: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n",
+		       data[3], data[4], data[5], data[6], data[7], data[8]);
+	else if (len == 7)
+		printf("\t\tHESSID: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n",
+		       data[1], data[2], data[3], data[4], data[5], data[6]);
+}
+
 static const char *ht_secondary_offset[4] = {
 	"no secondary",
 	"above",
@@ -891,6 +954,7 @@ static const struct ie_print ieprinters[] = {
 	[113] = { "MESH Configuration", print_mesh_conf, 7, 7, BIT(PRINT_SCAN), },
 	[114] = { "MESH ID", print_ssid, 0, 32, BIT(PRINT_SCAN) | BIT(PRINT_LINK), },
 	[127] = { "Extended capabilities", print_capabilities, 0, 255, BIT(PRINT_SCAN), },
+	[107] = { "802.11u Interworking", print_interworking, 0, 255, BIT(PRINT_SCAN), },
 };
 
 static void print_wifi_wpa(const uint8_t type, uint8_t len, const uint8_t *data)
-- 
1.7.3.4

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