net: tests: Add IPv6 address manipulation unit tests

Change-Id: Ide3bce35dcfd3ec31bfe3cd842a87ca3b639ba4f
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>

tests/net/ip-addr/prj_x86.conf

@@ -9,3 +9,4 @@ CONFIG_NET_NBUF_TX_COUNT=2
 CONFIG_NET_NBUF_DATA_COUNT=5
 CONFIG_NET_LOG=y
 CONFIG_SYS_LOG_SHOW_COLOR=y
+CONFIG_TEST_RANDOM_GENERATOR=y

tests/net/ip-addr/src/main.c

@@ -21,9 +21,12 @@
 #include <string.h>
 #include <stdio.h>
 #include <errno.h>
+#include <device.h>
+#include <init.h>
 #include <misc/printk.h>
 #include <net/net_core.h>
 #include <net/nbuf.h>
+#include <net/net_ip.h>
 
 #define NET_DEBUG 1
 #include "net_private.h"
@@ -104,12 +107,78 @@
 		}							\
 	} while (0)
 
+extern struct net_if __net_if_start[];
+
+struct net_test_context {
+	uint8_t mac_addr[6];
+	struct net_linkaddr ll_addr;
+};
+
+int net_test_init(struct device *dev)
+{
+	struct net_test_context *net_test_context = dev->driver_data;
+
+	dev->driver_api = NULL;
+	net_test_context = net_test_context;
+
+	return 0;
+}
+
+static uint8_t *net_test_get_mac(struct device *dev)
+{
+	struct net_test_context *context = dev->driver_data;
+
+	if (context->mac_addr[0] == 0x00) {
+		/* 10-00-00-00-00 to 10-00-00-00-FF Documentation RFC7042 */
+		context->mac_addr[0] = 0x10;
+		context->mac_addr[1] = 0x00;
+		context->mac_addr[2] = 0x00;
+		context->mac_addr[3] = 0x00;
+		context->mac_addr[4] = 0x00;
+		context->mac_addr[5] = sys_rand32_get();
+	}
+
+	return context->mac_addr;
+}
+
+static void net_test_iface_init(struct net_if *iface)
+{
+	uint8_t *mac = net_test_get_mac(net_if_get_device(iface));
+
+	net_if_set_link_addr(iface, mac, 8);
+}
+
+struct net_test_context net_test_context_data;
+
+static struct net_if_api net_test_if_api = {
+	.init = net_test_iface_init
+};
+
+NET_DEVICE_INIT(net_addr_test, "net_addr_test",
+		net_test_init, &net_test_context_data, NULL,
+		CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,
+		&net_test_if_api, 127);
+
 #ifdef CONFIG_MICROKERNEL
 void mainloop(void)
 #else
 void main(void)
 #endif
 {
+	struct in6_addr loopback = IN6ADDR_LOOPBACK_INIT;
+	struct in6_addr mcast = { { { 0xff, 0x84, 0, 0, 0, 0, 0, 0,
+				      0, 0, 0, 0, 0, 0, 0, 0x2 } } };
+	struct in6_addr addr6 = { { { 0xfe, 0x80, 0, 0, 0, 0, 0, 0,
+				      0, 0, 0, 0, 0, 0, 0, 0x1 } } };
+	struct in6_addr addr6_pref1 = { { { 0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0,
+					    0, 0, 0, 0, 0, 0, 0, 0x1 } } };
+	struct in6_addr addr6_pref2 = { { { 0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0,
+					    0, 0, 0, 0, 0, 0, 0, 0x2 } } };
+	struct in6_addr addr6_pref3 = { { { 0x20, 0x01, 0x0d, 0xb8, 0x64, 0, 0,
+					    0, 0, 0, 0, 0, 0, 0, 0, 0x2 } } };
+	struct net_if_addr *ifaddr1, *ifaddr2;
+	struct net_if_mcast_addr *ifmaddr1;
+
 	TEST_BYTE_1(0xde, "DE");
 	TEST_BYTE_1(0x09, "09");
 	TEST_BYTE_2(0xa9, "a9");
@@ -146,4 +215,81 @@ void main(void)
 	TEST_IPV4(127, 0, 0, 1, "127.0.0.1");
 
 	printk("IP address print tests passed\n");
+
+	if (!net_is_ipv6_addr_loopback(&loopback)) {
+		printk("IPv6 loopback address check failed.\n");
+		return;
+	}
+
+	if (!net_is_ipv6_addr_mcast(&mcast)) {
+		printk("IPv6 multicast address check failed.\n");
+		return;
+	}
+
+	ifaddr1 = net_if_ipv6_addr_add(__net_if_start,
+				      &addr6,
+				      NET_ADDR_MANUAL,
+				      0);
+	if (!ifaddr1) {
+		printk("IPv6 interface address add failed\n");
+		return;
+	}
+
+	ifaddr2 = net_if_ipv6_addr_lookup(&addr6);
+	if (ifaddr1 != ifaddr2) {
+		printk("IPv6 interface address mismatch\n");
+		return;
+	}
+
+	if (net_is_my_ipv6_addr(&loopback)) {
+		printk("My IPv6 loopback address check failed\n");
+		return;
+	}
+
+	if (!net_is_my_ipv6_addr(&addr6)) {
+		printk("My IPv6 address check failed\n");
+		return;
+	}
+
+	if (!net_is_ipv6_prefix((uint8_t *)&addr6_pref1,
+				(uint8_t *)&addr6_pref2,
+				64)) {
+		printk("Same IPv6 prefix test failed\n");
+		return;
+	}
+
+	if (net_is_ipv6_prefix((uint8_t *)&addr6_pref1,
+			       (uint8_t *)&addr6_pref3,
+			       64)) {
+		printk("Different IPv6 prefix test failed\n");
+		return;
+	}
+
+	if (net_is_ipv6_prefix((uint8_t *)&addr6_pref1,
+			       (uint8_t *)&addr6_pref2,
+			       128)) {
+		printk("Different full IPv6 prefix test failed\n");
+		return;
+	}
+
+	if (net_is_ipv6_prefix((uint8_t *)&addr6_pref1,
+			       (uint8_t *)&addr6_pref3,
+			       255)) {
+		printk("Too long prefix test failed\n");
+		return;
+	}
+
+	ifmaddr1 = net_if_ipv6_maddr_add(__net_if_start, &mcast);
+	if (!ifmaddr1) {
+		printk("IPv6 multicast address add failed\n");
+		return;
+	}
+
+	ifmaddr1 = net_if_ipv6_maddr_add(__net_if_start, &addr6);
+	if (ifmaddr1) {
+		printk("IPv6 multicast address could be added failed\n");
+		return;
+	}
+
+	printk("IP address checks passed\n");
 }