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authorPavel Emelyanov <xemul@openvz.org>2008-02-23 20:19:20 -0800
committerDavid S. Miller <davem@davemloft.net>2008-02-23 20:19:20 -0800
commit34cc7ba6398203aab4056917fa1e2aa5988487aa (patch)
tree40fc152c1d9722ca70154bd6d989694fff526280 /net/ipv6
parent55b01e8681cba392ccda4ff6184054d38968115d (diff)
[IP_TUNNEL]: Don't limit the number of tunnels with generic name explicitly.
Use the added dev_alloc_name() call to create tunnel device name, rather than iterate in a hand-made loop with an artificial limit. Thanks Patrick for noticing this. [ The way this works is, when the device is actually registered, the generic code noticed the '%' in the name and invokes dev_alloc_name() to fully resolve the name. -DaveM ] Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/ip6_tunnel.c15
-rw-r--r--net/ipv6/sit.c12
2 files changed, 6 insertions, 21 deletions
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index cd940647bd1..2a124e9a1b2 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -229,18 +229,11 @@ static struct ip6_tnl *ip6_tnl_create(struct ip6_tnl_parm *p)
char name[IFNAMSIZ];
int err;
- if (p->name[0]) {
+ if (p->name[0])
strlcpy(name, p->name, IFNAMSIZ);
- } else {
- int i;
- for (i = 1; i < IP6_TNL_MAX; i++) {
- sprintf(name, "ip6tnl%d", i);
- if (__dev_get_by_name(&init_net, name) == NULL)
- break;
- }
- if (i == IP6_TNL_MAX)
- goto failed;
- }
+ else
+ sprintf(name, "ip6tnl%%d");
+
dev = alloc_netdev(sizeof (*t), name, ip6_tnl_dev_setup);
if (dev == NULL)
goto failed;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index e77239d02bf..dde7801abef 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -164,16 +164,8 @@ static struct ip_tunnel * ipip6_tunnel_locate(struct ip_tunnel_parm *parms, int
if (parms->name[0])
strlcpy(name, parms->name, IFNAMSIZ);
- else {
- int i;
- for (i=1; i<100; i++) {
- sprintf(name, "sit%d", i);
- if (__dev_get_by_name(&init_net, name) == NULL)
- break;
- }
- if (i==100)
- goto failed;
- }
+ else
+ sprintf(name, "sit%%d");
dev = alloc_netdev(sizeof(*t), name, ipip6_tunnel_setup);
if (dev == NULL)