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[netdevice] Avoid using zero as a network device index 

Avoid using zero as a network device index, so that a zero
sin6_scope_id can be used to mean "unspecified" (rather than
unintentionally meaning "net0").

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2015-07-21 14:51:16 +01:00
parent 41670ca2fe
commit 9c185e2eac
1 changed files with 2 additions and 2 deletions
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4
src/net/netdevice.c
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@ -676,11 +676,11 @@ int register_netdev ( struct net_device *netdev ) {
}
/* Record device index and create device name */
netdev->index = netdev_index++;
if ( netdev->name[0] == '\0' ) {
snprintf ( netdev->name, sizeof ( netdev->name ), "net%d",
netdev->index );
netdev_index );
}
netdev->index = ++netdev_index;
/* Use least significant bits of the link-layer address to
* improve the randomness of the (non-cryptographic) random