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Networking: Fix network device name assignment logic for the case of the local loopback device. There is only one local loopback network device and it is unnumbered

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This commit is contained in:
Saehie ParK 2015-08-25 19:59:45 -06:00 committed by Gregory Nutt
parent fb53c29292
commit e6dbd3d903
1 changed files with 21 additions and 2 deletions
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23
net/netdev/netdev_register.c
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@ -257,16 +257,35 @@ int netdev_register(FAR struct net_driver_s *dev, enum net_lltype_e lltype)
dev->d_conncb = NULL;
dev->d_devcb = NULL;
/* Get the next available device number and sssign a device name to
/* Get the next available device number and assign a device name to
* the interface
*/
save = net_lock();
#ifdef CONFIG_NET_MULTILINK
devnum = find_devnum(devfmt);
# ifdef CONFIG_NET_LOOPBACK
/* The local loopback device is a special case: There can be only one
* local loopback device so it is unnumbered.
*/
if (lltype == NET_LL_LOOPBACK)
{
devnum = 0;
}
else
# endif
{
devnum = find_devnum(devfmt);
}
#else
/* There is only a single link type. Finding the next network device
* number is simple.
*/
devnum = g_next_devnum++;
#endif
#ifdef CONFIG_NET_USER_DEVFMT
if (*dev->d_ifname)
{