From 4e9cac2ba437fcb093c7417b1cd91a77ebd1756a Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Thu, 3 May 2007 03:28:13 -0700 Subject: [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 Signed-off-by: David Howells Signed-off-by: David S. Miller --- net/core/dev.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) (limited to 'net/core') 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; } -- cgit v1.2.3