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Commit 90f1d1b4 authored by Matan Barak's avatar Matan Barak Committed by Roland Dreier
Browse files

IB/core: Add flow steering support for IPoIB UD traffic 



When creating an IPoIB UD QP, provide a hint to the low level driver
that the QP should support flow-steering.  This means that privileged
user space applications can steer TCP/IP IPoIB traffic from the
network stack, in a similar manner done with Ethernet RAW_PACKET QPs.

The hint is provided through new QP creation flag called NETIF_QP.

Signed-off-by: default avatarMatan Barak <matanb@mellanox.com>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent 7e22e911

drivers/infiniband/ulp/ipoib/ipoib_verbs.c

+3 −0
Original line number Diff line number Diff line
@@ -192,6 +192,9 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca) 
	if (priv->hca_caps & IB_DEVICE_BLOCK_MULTICAST_LOOPBACK)

		init_attr.create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;



	if (priv->hca_caps & IB_DEVICE_MANAGED_FLOW_STEERING)

		init_attr.create_flags |= IB_QP_CREATE_NETIF_QP;



	if (dev->features & NETIF_F_SG)

		init_attr.cap.max_send_sge = MAX_SKB_FRAGS + 1;

include/rdma/ib_verbs.h

+1 −0
Original line number Diff line number Diff line
@@ -633,6 +633,7 @@ enum ib_qp_type { 
enum ib_qp_create_flags {

	IB_QP_CREATE_IPOIB_UD_LSO		= 1 << 0,

	IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK	= 1 << 1,

	IB_QP_CREATE_NETIF_QP			= 1 << 5,

	/* reserve bits 26-31 for low level drivers' internal use */

	IB_QP_CREATE_RESERVED_START		= 1 << 26,

	IB_QP_CREATE_RESERVED_END		= 1 << 31,