diff options
Diffstat (limited to 'eth-multiplexer/vdev.c')
| -rw-r--r-- | eth-multiplexer/vdev.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/eth-multiplexer/vdev.c b/eth-multiplexer/vdev.c index e753b85f..47dc8d2d 100644 --- a/eth-multiplexer/vdev.c +++ b/eth-multiplexer/vdev.c @@ -28,10 +28,12 @@ #include <arpa/inet.h> #include <stdlib.h> #include <error.h> +#include <hurd/ihash.h> #include <pthread.h> #include "vdev.h" +#include "ethernet.h" #include "queue.h" #include "bpf_impl.h" #include "util.h" @@ -127,6 +129,7 @@ add_vdev (char *name, int size, struct port_class *class, struct port_bucket *bucket) { error_t err; + uint32_t hash; struct vether_device *vdev; if (size < sizeof (*vdev)) @@ -143,9 +146,13 @@ add_vdev (char *name, int size, vdev->if_header_format = HDR_ETHERNET; vdev->if_address_size = ETH_ALEN; vdev->if_flags = 0; + + /* Compute a pseudo-random but stable ethernet address. */ vdev->if_address[0] = 0x52; vdev->if_address[1] = 0x54; - *(int *)(vdev->if_address + 2) = random (); + hash = hurd_ihash_hash32 (ether_address, ETH_ALEN, 0); + hash = hurd_ihash_hash32 (name, strlen (name), hash); + memcpy (&vdev->if_address[2], &hash, 4); queue_init (&vdev->port_list.if_rcv_port_list); queue_init (&vdev->port_list.if_snd_port_list); |