diff options
Diffstat (limited to 'src/udev/net/link-config.c')
| -rw-r--r-- | src/udev/net/link-config.c | 29 |
1 files changed, 1 insertions, 28 deletions
diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c index 62439c0c71..472a4150c3 100644 --- a/src/udev/net/link-config.c +++ b/src/udev/net/link-config.c @@ -294,44 +294,17 @@ static bool mac_is_permanent(struct udev_device *device) { return type == 0; } -#define HASH_KEY SD_ID128_MAKE(d3,1e,48,fa,90,fe,4b,4c,9d,af,d5,d7,a1,b1,2e,8a) - static int get_mac(struct udev_device *device, bool want_random, struct ether_addr *mac) { int r; if (want_random) random_bytes(mac->ether_addr_octet, ETH_ALEN); else { - const char *name; uint8_t result[8]; - size_t l, sz; - uint8_t *v; - - /* fetch some persistent data unique (on this machine) to this device */ - name = udev_device_get_property_value(device, "ID_NET_NAME_ONBOARD"); - if (!name) { - name = udev_device_get_property_value(device, "ID_NET_NAME_SLOT"); - if (!name) { - name = udev_device_get_property_value(device, "ID_NET_NAME_PATH"); - if (!name) - return -ENOENT; - } - } - l = strlen(name); - sz = sizeof(sd_id128_t) + l; - v = alloca(sz); - - /* fetch some persistent data unique to this machine */ - r = sd_id128_get_machine((sd_id128_t*) v); + r = net_get_unique_predictable_data(device, result); if (r < 0) return r; - memcpy(v + sizeof(sd_id128_t), name, l); - - /* Let's hash the machine ID plus the device name. We - * use a fixed, but originally randomly created hash - * key here. */ - siphash24(result, v, sz, HASH_KEY.bytes); assert_cc(ETH_ALEN <= sizeof(result)); memcpy(mac->ether_addr_octet, result, ETH_ALEN); |