net: Add functions to get/set nameserver and domainname

It's more convenient to have getter/setter functions for
variables rather than using the detour around global vars
which use string matching and all kinds of overhead in the
background.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 2 insertions, 6 deletions

diff --git a/net/dns.c b/net/dns.c
index 69b8a24861..a8ce7a4484 100644
--- a/net/dns.c
+++ b/net/dns.c
@@ -202,7 +202,6 @@ static void dns_handler(void *ctx, char *packet, unsigned len)
 IPaddr_t resolv(const char *host)
 {
 	IPaddr_t ip;
-	const char *ns;
 
 	if (!string_to_ip(host, &ip))
 		return ip;
@@ -211,16 +210,13 @@ IPaddr_t resolv(const char *host)
 
 	dns_state = STATE_INIT;
 
-	ns = getenv("global.net.nameserver");
-	if (!ns || !*ns) {
+	ip = net_get_nameserver();
+	if (!ip) {
 		printk("%s: no nameserver specified in $net.nameserver\n",
 				__func__);
 		return 0;
 	}
 
-	if (string_to_ip(ns, &ip))
-		return 0;
-
 	debug("resolving host %s via nameserver %pI4\n", host, &ip);
 
 	dns_con = net_udp_new(ip, DNS_PORT, dns_handler, NULL);