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Commit 834d16d6 authored Jan 28, 2016 by Devesh Sharma Committed by Doug Ledford Feb 29, 2016

RDMA/ocrdma: Support user AH creation for RoCE-v2



This patch adds support to create RoCE-v2 compatible AH. It uses ahid
field to tell network-header-type to user space library. The library
has to decode network-header-type from ahid field.

Signed-off-by: Somnath Kotur <somnath.kotur@avagotech.com>
Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

parent bcf117e2

drivers/infiniband/hw/ocrdma/ocrdma_ah.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -218,6 +218,11 @@ struct ib_ah ocrdma_create_ah(struct ib_pd ibpd, struct ib_ah_attr *attr)
		ahid_addr = pd->uctx->ah_tbl.va + attr->dlid;
		*ahid_addr = 0;
		*ahid_addr \|= ah->id & OCRDMA_AH_ID_MASK;
		if (ocrdma_is_udp_encap_supported(dev)) {
		*ahid_addr \|= ((u32)ah->hdr_type &
		OCRDMA_AH_L3_TYPE_MASK) <<
		OCRDMA_AH_L3_TYPE_SHIFT;
		}
		if (isvlan)
		*ahid_addr \|= (OCRDMA_AH_VLAN_VALID_MASK <<
		OCRDMA_AH_VLAN_VALID_SHIFT);

drivers/infiniband/hw/ocrdma/ocrdma_ah.h

+3 −2

Original line number	Diff line number	Diff line
		@@ -46,9 +46,10 @@
		enum {
		OCRDMA_AH_ID_MASK = 0x3FF,
		OCRDMA_AH_VLAN_VALID_MASK = 0x01,
		OCRDMA_AH_VLAN_VALID_SHIFT = 0x1F
		OCRDMA_AH_VLAN_VALID_SHIFT = 0x1F,
		OCRDMA_AH_L3_TYPE_MASK = 0x03,
		OCRDMA_AH_L3_TYPE_SHIFT = 0x1D /* 29 bits */
		};

		struct ib_ah ocrdma_create_ah(struct ib_pd , struct ib_ah_attr *);
		int ocrdma_destroy_ah(struct ib_ah *);
		int ocrdma_query_ah(struct ib_ah , struct ib_ah_attr );