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net: Check network device driver name

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If name is longer than allocated space NAMESIZE
mac address is rewritten which show error
message like:

Error message:
Warning: Xlltemac.87000000 MAC addresses don't match:
Address in SROM is         30:00:00:00:00:00
Address in environment is  00:0a:35:00:6a:04

NAMESIZE contains Driver name + zero terminated character.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2011-08-29 23:30:13 +00:00 committed by Wolfgang Denk
parent 03bf22f559
commit 58c583b6c2
1 changed files with 8 additions and 0 deletions
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8
net/eth.c
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@ -224,6 +224,14 @@ int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
int eth_register(struct eth_device *dev)
{
struct eth_device *d;
size_t len = strlen(dev->name);
if (len >= NAMESIZE) {
printf("Network driver name is too long (%zu >= %zu): %s\n",
len, NAMESIZE, dev->name);
return -1;
}
if (!eth_devices) {
eth_current = eth_devices = dev;
eth_current_changed();