iptunnel: simplify parsing TTL, allow 'hlim' as identifier
Instead of parsing an unsigned integer and checking boundaries, simply
parse u8. This and the added ttl alias 'hlim' provide consistency with
ip6tunnel.
Signed-off-by: Phil Sutter <phil@nwl.cc>
diff --git a/ip/iptunnel.c b/ip/iptunnel.c
index 92edb34..8c05f6f 100644
--- a/ip/iptunnel.c
+++ b/ip/iptunnel.c
@@ -141,14 +141,13 @@
NEXT_ARG();
strncpy(medium, *argv, IFNAMSIZ-1);
} else if (strcmp(*argv, "ttl") == 0 ||
- strcmp(*argv, "hoplimit") == 0) {
- unsigned uval;
+ strcmp(*argv, "hoplimit") == 0 ||
+ strcmp(*argv, "hlim") == 0) {
+ __u8 uval;
NEXT_ARG();
if (strcmp(*argv, "inherit") != 0) {
- if (get_unsigned(&uval, *argv, 0))
+ if (get_u8(&uval, *argv, 0))
invarg("invalid TTL\n", *argv);
- if (uval > 255)
- invarg("TTL must be <=255\n", *argv);
p->iph.ttl = uval;
}
} else if (strcmp(*argv, "tos") == 0 ||