[PATCH rdma-next v3 1/3] RDMA/mana_ib: Create and destroy RC QP

Konstantin Taranov
2024-05-22T08:24:08Z

Implement HW requests to create and destroy an RC QP.
An RC QP may have 5 queues.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
---
drivers/infiniband/hw/mana/main.c | 59 ++++++++++++++++++++++++++++
drivers/infiniband/hw/mana/mana_ib.h | 58 ++++++++++++++++++++++++++-
2 files changed, 116 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 2a4113576..6bd60729e 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -888,3 +888,62 @@ int mana_ib_gd_destroy_cq(struct mana_ib_dev *mdev, struct mana_ib_cq *cq)

return 0;
}
+
+int mana_ib_gd_create_rc_qp(struct mana_ib_dev *mdev, struct mana_ib_qp *qp,
+ struct ib_qp_init_attr *attr, u32 doorbell, u64 flags)
+{
+ struct mana_ib_cq *send_cq = container_of(qp->ibqp.send_cq, struct mana_ib_cq, ibcq);
+ struct mana_ib_cq *recv_cq = container_of(qp->ibqp.recv_cq, struct mana_ib_cq, ibcq);
+ struct mana_ib_pd *pd = container_of(qp->ibqp.pd, struct mana_ib_pd, ibpd);
+ struct gdma_context *gc = mdev_to_gc(mdev);
+ struct mana_rnic_create_qp_resp resp = {};
+ struct mana_rnic_create_qp_req req = {};
+ int err, i;
+
+ mana_gd_init_req_hdr(&req.hdr, MANA_IB_CREATE_RC_QP, sizeof(req), sizeof(resp));
+ req.hdr.dev_id = gc->mana_ib.dev_id;
+ req.adapter = mdev->adapter_handle;
+ req.pd_handle = pd->pd_handle;
+ req.send_cq_handle = send_cq->cq_handle;
+ req.recv_cq_handle = recv_cq->cq_handle;
+ for (i = 0; i < MANA_RC_QUEUE_TYPE_MAX; i++)
+ req.dma_region[i] = qp->rc_qp.queues[i].gdma_region;
+ req.doorbell_page = doorbell;
+ req.max_send_wr = attr->cap.max_send_wr;
+ req.max_recv_wr = attr->cap.max_recv_wr;
+ req.max_send_sge = attr->cap.max_send_sge;
+ req.max_recv_sge = attr->cap.max_recv_sge;
+ req.flags = flags;
+
+ err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+ if (err) {
+ ibdev_err(&mdev->ib_dev, "Failed to create rc qp err %d", err);
+ return err;
+ }
+ qp->qp_handle = resp.rc_qp_handle;
+ for (i = 0; i < MANA_RC_QUEUE_TYPE_MAX; i++) {
+ qp->rc_qp.queues[i].id = resp.queue_ids[i];
+ /* The GDMA regions are now owned by the RNIC QP handle */
+ qp->rc_qp.queues[i].gdma_region = GDMA_INVALID_DMA_REGION;
+ }
+ return 0;
+}
+
+int mana_ib_gd_destroy_rc_qp(struct mana_ib_dev *mdev, struct mana_ib_qp *qp)
+{
+ struct mana_rnic_destroy_rc_qp_resp resp = {0};
+ struct mana_rnic_destroy_rc_qp_req req = {0};
+ struct gdma_context *gc = mdev_to_gc(mdev);
+ int err;
+
+ mana_gd_init_req_hdr(&req.hdr, MANA_IB_DESTROY_RC_QP, sizeof(req), sizeof(resp));
+ req.hdr.dev_id = gc->mana_ib.dev_id;
+ req.adapter = mdev->adapter_handle;
+ req.rc_qp_handle = qp->qp_handle;
+ err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+ if (err) {
+ ibdev_err(&mdev->ib_dev, "Failed to destroy rc qp err %d", err);
+ return err;
+ }
+ return 0;
+}
diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index 68c3b4f0f..a3e229c83 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -95,11 +95,27 @@ struct mana_ib_cq {
mana_handle_t cq_handle;
};

+enum mana_rc_queue_type {
+ MANA_RC_SEND_QUEUE_REQUESTER = 0,
+ MANA_RC_SEND_QUEUE_RESPONDER,
+ MANA_RC_SEND_QUEUE_FMR,
+ MANA_RC_RECV_QUEUE_REQUESTER,
+ MANA_RC_RECV_QUEUE_RESPONDER,
+ MANA_RC_QUEUE_TYPE_MAX,
+};
+
+struct mana_ib_rc_qp {
+ struct mana_ib_queue queues[MANA_RC_QUEUE_TYPE_MAX];
+};
+
struct mana_ib_qp {
struct ib_qp ibqp;

mana_handle_t qp_handle;
- struct mana_ib_queue raw_sq;
+ union {
+ struct mana_ib_queue raw_sq;
+ struct mana_ib_rc_qp rc_qp;
+ };

/* The port on the IB device, starting with 1 */
u32 port;
@@ -122,6 +138,8 @@ enum mana_ib_command_code {
MANA_IB_CONFIG_MAC_ADDR = 0x30005,
MANA_IB_CREATE_CQ = 0x30008,
MANA_IB_DESTROY_CQ = 0x30009,
+ MANA_IB_CREATE_RC_QP = 0x3000a,
+ MANA_IB_DESTROY_RC_QP = 0x3000b,
};

struct mana_ib_query_adapter_caps_req {
@@ -230,6 +248,40 @@ struct mana_rnic_destroy_cq_resp {
struct gdma_resp_hdr hdr;
}; /* HW Data */

+struct mana_rnic_create_qp_req {
+ struct gdma_req_hdr hdr;
+ mana_handle_t adapter;
+ mana_handle_t pd_handle;
+ mana_handle_t send_cq_handle;
+ mana_handle_t recv_cq_handle;
+ u64 dma_region[MANA_RC_QUEUE_TYPE_MAX];
+ u64 deprecated[2];
+ u64 flags;
+ u32 doorbell_page;
+ u32 max_send_wr;
+ u32 max_recv_wr;
+ u32 max_send_sge;
+ u32 max_recv_sge;
+ u32 reserved;
+}; /* HW Data */
+
+struct mana_rnic_create_qp_resp {
+ struct gdma_resp_hdr hdr;
+ mana_handle_t rc_qp_handle;
+ u32 queue_ids[MANA_RC_QUEUE_TYPE_MAX];
+ u32 reserved;
+}; /* HW Data*/
+
+struct mana_rnic_destroy_rc_qp_req {
+ struct gdma_req_hdr hdr;
+ mana_handle_t adapter;
+ mana_handle_t rc_qp_handle;
+}; /* HW Data */
+
+struct mana_rnic_destroy_rc_qp_resp {
+ struct gdma_resp_hdr hdr;
+}; /* HW Data */
+
static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev *mdev)
{
return mdev->gdma_dev->gdma_context;
@@ -354,4 +406,8 @@ int mana_ib_gd_config_mac(struct mana_ib_dev *mdev, enum mana_ib_addr_op op, u8
int mana_ib_gd_create_cq(struct mana_ib_dev *mdev, struct mana_ib_cq *cq, u32 doorbell);

int mana_ib_gd_destroy_cq(struct mana_ib_dev *mdev, struct mana_ib_cq *cq);
+
+int mana_ib_gd_create_rc_qp(struct mana_ib_dev *mdev, struct mana_ib_qp *qp,
+ struct ib_qp_init_attr *attr, u32 doorbell, u64 flags);
+int mana_ib_gd_destroy_rc_qp(struct mana_ib_dev *mdev, struct mana_ib_qp *qp);
#endif
--
2.43.0