[PATCH 07/17] net: ipv6: Add ip6addr, gatewayip6, serverip6 variables callbacks

[Viacheslav Mitrofanov]

Implement actions on ip6addr, gatewayip6, serverip6 varaibles.
on_ip6addr - convert IPv6 string addr to struct ip6_addr
on_gatewayip6 - convert IPv6 string addr to struct ip6_addr
on_serverip6 - convert IPv6 string addr to struct ip6_addr

Signed-off-by: Viacheslav Mitrofanov <v.v.mitrofanov at yadro.com>
---
 net/net6.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/net/net6.c b/net/net6.c
index c2569e0e68..a0410ea8ba 100644
--- a/net/net6.c
+++ b/net/net6.c
@@ -31,3 +31,70 @@ struct in6_addr net_server_ip6 = ZERO_IPV6_ADDR;
 u32 net_prefix_length;
 
 bool use_ip6;
+
+static int on_ip6addr(const char *name, const char *value, enum env_op op,
+		      int flags)
+{
+	char *v, *s, *strcopy;
+	int i;
+
+	if (flags & H_PROGRAMMATIC)
+		return 0;
+
+	if (op == env_op_delete) {
+		net_prefix_length = 0;
+		net_copy_ip6(&net_ip6, &net_null_addr_ip6);
+		return 0;
+	}
+
+	strcopy = strdup(value);
+	if (!strcopy)
+		return -1;
+
+	net_prefix_length = 128;
+	i = 0;
+	s = strcopy;
+	while (s) {
+		v = strsep(&s, "/");
+		if (!v)
+			break;
+
+		switch (i++) {
+		case 0:
+			string_to_ip6(v, &net_ip6);
+			break;
+		case 1:
+			net_prefix_length = simple_strtoul(v, NULL, 10);
+			break;
+		default:
+			break;
+		}
+	}
+	free(strcopy);
+
+	return 0;
+}
+
+U_BOOT_ENV_CALLBACK(ip6addr, on_ip6addr);
+
+static int on_gatewayip6(const char *name, const char *value, enum env_op op,
+			 int flags)
+{
+	if (flags & H_PROGRAMMATIC)
+		return 0;
+
+	return string_to_ip6(value, &net_gateway6);
+}
+
+U_BOOT_ENV_CALLBACK(gatewayip6, on_gatewayip6);
+
+static int on_serverip6(const char *name, const char *value, enum env_op op,
+			int flags)
+{
+	if (flags & H_PROGRAMMATIC)
+		return 0;
+
+	return string_to_ip6(value, &net_server_ip6);
+}
+
+U_BOOT_ENV_CALLBACK(serverip6, on_serverip6);
-- 
2.25.1