From 834d16d66ebc2b5faa06af0bda3bb6f9c71b3996 Mon Sep 17 00:00:00 2001 From: Devesh Sharma Date: Thu, 28 Jan 2016 08:59:59 -0500 Subject: [PATCH] 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 Signed-off-by: Devesh Sharma Signed-off-by: Doug Ledford --- drivers/infiniband/hw/ocrdma/ocrdma_ah.c | 5 +++++ drivers/infiniband/hw/ocrdma/ocrdma_ah.h | 5 +++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c index 4aed1dbb0b97..e3c4f1784ce8 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c @@ -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); diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_ah.h b/drivers/infiniband/hw/ocrdma/ocrdma_ah.h index 04a30ae67473..3856dd4c7e3d 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_ah.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma_ah.h @@ -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 *); -- 2.30.2