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authorPatrick McHardy <kaber@trash.net>2007-05-03 03:28:13 -0700
committerDavid S. Miller <davem@davemloft.net>2007-05-03 03:28:13 -0700
commit4e9cac2ba437fcb093c7417b1cd91a77ebd1756a (patch)
treebbcf898f720eb19d9d6fbc196902ec93d0748f84
parent5b35fad9d4fc2fcaf5c23887c1de1bc3eb28ab8c (diff)
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[NET]: Add __dev_getfirstbyhwtype
Add __dev_getfirstbyhwtype for callers that don't want a reference but some data from the device and thus need to take the rtnl anyway. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/linux/netdevice.h1
-rw-r--r--net/core/dev.c21
2 files changed, 17 insertions, 5 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ac0c92b1e002..4428f1c3c13c 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -582,6 +582,7 @@ extern int netdev_boot_setup_check(struct net_device *dev);
extern unsigned long netdev_boot_base(const char *prefix, int unit);
extern struct net_device *dev_getbyhwaddr(unsigned short type, char *hwaddr);
extern struct net_device *dev_getfirstbyhwtype(unsigned short type);
+extern struct net_device *__dev_getfirstbyhwtype(unsigned short type);
extern void dev_add_pack(struct packet_type *pt);
extern void dev_remove_pack(struct packet_type *pt);
extern void __dev_remove_pack(struct packet_type *pt);
diff --git a/net/core/dev.c b/net/core/dev.c
index eb999003bbb7..c305819b7266 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -576,17 +576,28 @@ struct net_device *dev_getbyhwaddr(unsigned short type, char *ha)
EXPORT_SYMBOL(dev_getbyhwaddr);
-struct net_device *dev_getfirstbyhwtype(unsigned short type)
+struct net_device *__dev_getfirstbyhwtype(unsigned short type)
{
struct net_device *dev;
- rtnl_lock();
+ ASSERT_RTNL();
for (dev = dev_base; dev; dev = dev->next) {
- if (dev->type == type) {
- dev_hold(dev);
+ if (dev->type == type)
break;
- }
}
+ return dev;
+}
+
+EXPORT_SYMBOL(__dev_getfirstbyhwtype);
+
+struct net_device *dev_getfirstbyhwtype(unsigned short type)
+{
+ struct net_device *dev;
+
+ rtnl_lock();
+ dev = __dev_getfirstbyhwtype(type);
+ if (dev)
+ dev_hold(dev);
rtnl_unlock();
return dev;
}