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[netdevice] Allow link layer to report broadcast/multicast packets via pull()

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Allow the link layer to directly report whether or not a packet is
multicast or broadcast at the time of calling pull(), rather than
relying on heuristics to determine this at a later stage.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2011-07-15 18:48:46 +01:00
parent 69b7d57265
commit a667bf044a
17 changed files with 99 additions and 43 deletions
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8
src/net/ethernet.c
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@@ -71,11 +71,13 @@ static int eth_push ( struct net_device *netdev __unused,
* @ret ll_dest Link-layer destination address
* @ret ll_source Source link-layer address
* @ret net_proto Network-layer protocol, in network-byte order
* @ret flags Packet flags
* @ret rc Return status code
*/
static int eth_pull ( struct net_device *netdev __unused,
struct io_buffer *iobuf, const void **ll_dest,
const void **ll_source, uint16_t *net_proto ) {
const void **ll_source, uint16_t *net_proto,
unsigned int *flags ) {
struct ethhdr *ethhdr = iobuf->data;
/* Sanity check */
@@ -92,6 +94,10 @@ static int eth_pull ( struct net_device *netdev __unused,
*ll_dest = ethhdr->h_dest;
*ll_source = ethhdr->h_source;
*net_proto = ethhdr->h_protocol;
*flags = ( ( is_multicast_ether_addr ( ethhdr->h_dest ) ?
LL_MULTICAST : 0 ) |
( is_broadcast_ether_addr ( ethhdr->h_dest ) ?
LL_BROADCAST : 0 ) );
return 0;
}