RDMA/ocrdma: Support RoCE-v2 in the UD path
This patch adds following changes to support RoCE-v2
in the UD path.
* During AH creation GID-type is resolved for a given gid-index.
* Based on GID-type protocol header is built.
* Work completion reports network header type and set
IB_WC_WITH_NETWORK_HDR_TYPE flag in wc->wc_flags to indicate
that the network header type is valid.
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>
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index 12420e4..4df3f13 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -2005,6 +2005,7 @@
else
ud_hdr->qkey = ud_wr(wr)->remote_qkey;
ud_hdr->rsvd_ahid = ah->id;
+ ud_hdr->hdr_type = ah->hdr_type;
if (ah->av->valid & OCRDMA_AV_VLAN_VALID)
hdr->cw |= (OCRDMA_FLAG_AH_VLAN_PR << OCRDMA_WQE_FLAGS_SHIFT);
}
@@ -2717,9 +2718,11 @@
return expand;
}
-static int ocrdma_update_ud_rcqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe)
+static int ocrdma_update_ud_rcqe(struct ocrdma_dev *dev, struct ib_wc *ibwc,
+ struct ocrdma_cqe *cqe)
{
int status;
+ u16 hdr_type = 0;
status = (le32_to_cpu(cqe->flags_status_srcqpn) &
OCRDMA_CQE_UD_STATUS_MASK) >> OCRDMA_CQE_UD_STATUS_SHIFT;
@@ -2728,7 +2731,17 @@
ibwc->pkey_index = 0;
ibwc->wc_flags = IB_WC_GRH;
ibwc->byte_len = (le32_to_cpu(cqe->ud.rxlen_pkey) >>
- OCRDMA_CQE_UD_XFER_LEN_SHIFT);
+ OCRDMA_CQE_UD_XFER_LEN_SHIFT) &
+ OCRDMA_CQE_UD_XFER_LEN_MASK;
+
+ if (ocrdma_is_udp_encap_supported(dev)) {
+ hdr_type = (le32_to_cpu(cqe->ud.rxlen_pkey) >>
+ OCRDMA_CQE_UD_L3TYPE_SHIFT) &
+ OCRDMA_CQE_UD_L3TYPE_MASK;
+ ibwc->wc_flags |= IB_WC_WITH_NETWORK_HDR_TYPE;
+ ibwc->network_hdr_type = hdr_type;
+ }
+
return status;
}
@@ -2791,12 +2804,15 @@
static void ocrdma_poll_success_rcqe(struct ocrdma_qp *qp,
struct ocrdma_cqe *cqe, struct ib_wc *ibwc)
{
+ struct ocrdma_dev *dev;
+
+ dev = get_ocrdma_dev(qp->ibqp.device);
ibwc->opcode = IB_WC_RECV;
ibwc->qp = &qp->ibqp;
ibwc->status = IB_WC_SUCCESS;
if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI)
- ocrdma_update_ud_rcqe(ibwc, cqe);
+ ocrdma_update_ud_rcqe(dev, ibwc, cqe);
else
ibwc->byte_len = le32_to_cpu(cqe->rq.rxlen);