[netdevice] Make ll_broadcast per-netdevice rather than per-ll_protocol

IPoIB has a link-layer broadcast address that varies according to the
partition key.  We currently go through several contortions to pretend
that the link-layer address is a fixed constant; by making the
broadcast address a property of the network device rather than the
link-layer protocol it will be possible to simplify IPoIB's broadcast
handling.

1 files changed, 18 insertions, 1 deletions

diff --git a/src/drivers/net/ipoib.c b/src/drivers/net/ipoib.c
index bb8757b43..d330d5a5a 100644
--- a/src/drivers/net/ipoib.c
+++ b/src/drivers/net/ipoib.c
@@ -348,7 +348,6 @@ struct ll_protocol ipoib_protocol __ll_protocol = {
 	.ll_proto	= htons ( ARPHRD_INFINIBAND ),
 	.ll_addr_len	= IPOIB_ALEN,
 	.ll_header_len	= IPOIB_HLEN,
-	.ll_broadcast	= ( uint8_t * ) &ipoib_broadcast,
 	.push		= ipoib_push,
 	.pull		= ipoib_pull,
 	.ntoa		= ipoib_ntoa,
@@ -1132,3 +1131,21 @@ void ipoib_remove ( struct ib_device *ibdev ) {
 	netdev_nullify ( netdev );
 	netdev_put ( netdev );
 }
+
+/**
+ * Allocate IPoIB device
+ *
+ * @v priv_size		Size of driver private data
+ * @ret netdev		Network device, or NULL
+ */
+struct net_device * alloc_ipoibdev ( size_t priv_size ) {
+	struct net_device *netdev;
+
+	netdev = alloc_netdev ( priv_size );
+	if ( netdev ) {
+		netdev->ll_protocol = &ipoib_protocol;
+		netdev->ll_broadcast = ( uint8_t * ) &ipoib_broadcast;
+		netdev->max_pkt_len = IPOIB_PKT_LEN;
+	}
+	return netdev;
+}