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

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>

1 files changed, 8 insertions, 4 deletions

diff --git a/src/net/netdevice.c b/src/net/netdevice.c
index 52ad8292..f5ec4191 100644
--- a/src/net/netdevice.c
+++ b/src/net/netdevice.c
@@ -678,17 +678,19 @@ int net_tx ( struct io_buffer *iobuf, struct net_device *netdev,
  * @v net_proto		Network-layer protocol, in network-byte order
  * @v ll_dest		Destination link-layer address
  * @v ll_source		Source link-layer address
+ * @v flags		Packet flags
  * @ret rc		Return status code
  */
 int net_rx ( struct io_buffer *iobuf, struct net_device *netdev,
-	     uint16_t net_proto, const void *ll_dest, const void *ll_source ) {
+	     uint16_t net_proto, const void *ll_dest, const void *ll_source,
+	     unsigned int flags ) {
 	struct net_protocol *net_protocol;
 
 	/* Hand off to network-layer protocol, if any */
 	for_each_table_entry ( net_protocol, NET_PROTOCOLS ) {
 		if ( net_protocol->net_proto == net_proto )
 			return net_protocol->rx ( iobuf, netdev, ll_dest,
-						  ll_source );
+						  ll_source, flags );
 	}
 
 	DBGC ( netdev, "NETDEV %s unknown network protocol %04x\n",
@@ -710,6 +712,7 @@ void net_poll ( void ) {
 	const void *ll_dest;
 	const void *ll_source;
 	uint16_t net_proto;
+	unsigned int flags;
 	int rc;
 
 	/* Poll and process each network device */
@@ -743,7 +746,8 @@ void net_poll ( void ) {
 			ll_protocol = netdev->ll_protocol;
 			if ( ( rc = ll_protocol->pull ( netdev, iobuf,
 							&ll_dest, &ll_source,
-							&net_proto ) ) != 0 ) {
+							&net_proto,
+							&flags ) ) != 0 ) {
 				free_iob ( iobuf );
 				continue;
 			}
@@ -751,7 +755,7 @@ void net_poll ( void ) {
 			/* Hand packet to network layer */
 			if ( ( rc = net_rx ( iob_disown ( iobuf ), netdev,
 					     net_proto, ll_dest,
-					     ll_source ) ) != 0 ) {
+					     ll_source, flags ) ) != 0 ) {
 				/* Record error for diagnosis */
 				netdev_rx_err ( netdev, NULL, rc );
 			}