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RDMA/mana_ib: Implement uapi to create and destroy RC QP

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Implement user requests to create and destroy an RC QP.
As the user does not have an FMR queue, it is skipped and NO_FMR flag
is used.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Link: https://lore.kernel.org/r/1716366242-558-3-git-send-email-kotaranov@linux.microsoft.com
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Konstantin Taranov 2024-05-22 01:24:01 -07:00 committed by Leon Romanovsky
parent 53657a0419
commit fdefb91849
3 changed files with 105 additions and 2 deletions
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4
drivers/infiniband/hw/mana/mana_ib.h
View File

@ -248,6 +248,10 @@ struct mana_rnic_destroy_cq_resp {
struct gdma_resp_hdr hdr;
}; /* HW Data */
enum mana_rnic_create_rc_flags {
MANA_RC_FLAG_NO_FMR = 2,
};
struct mana_rnic_create_qp_req {
struct gdma_req_hdr hdr;
mana_handle_t adapter;

94
drivers/infiniband/hw/mana/qp.c
View File

@ -398,6 +398,78 @@ err_free_vport:
return err;
}
static int mana_ib_create_rc_qp(struct ib_qp *ibqp, struct ib_pd *ibpd,
struct ib_qp_init_attr *attr, struct ib_udata *udata)
{
struct mana_ib_dev *mdev = container_of(ibpd->device, struct mana_ib_dev, ib_dev);
struct mana_ib_qp *qp = container_of(ibqp, struct mana_ib_qp, ibqp);
struct mana_ib_create_rc_qp_resp resp = {};
struct mana_ib_ucontext *mana_ucontext;
struct mana_ib_create_rc_qp ucmd = {};
int i, err, j;
u64 flags = 0;
u32 doorbell;
if (!udata || udata->inlen < sizeof(ucmd))
return -EINVAL;
mana_ucontext = rdma_udata_to_drv_context(udata, struct mana_ib_ucontext, ibucontext);
doorbell = mana_ucontext->doorbell;
flags = MANA_RC_FLAG_NO_FMR;
err = ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen));
if (err) {
ibdev_dbg(&mdev->ib_dev, "Failed to copy from udata, %d\n", err);
return err;
}
for (i = 0, j = 0; i < MANA_RC_QUEUE_TYPE_MAX; ++i) {
/* skip FMR for user-level RC QPs */
if (i == MANA_RC_SEND_QUEUE_FMR) {
qp->rc_qp.queues[i].id = INVALID_QUEUE_ID;
qp->rc_qp.queues[i].gdma_region = GDMA_INVALID_DMA_REGION;
continue;
}
err = mana_ib_create_queue(mdev, ucmd.queue_buf[j], ucmd.queue_size[j],
&qp->rc_qp.queues[i]);
if (err) {
ibdev_err(&mdev->ib_dev, "Failed to create queue %d, err %d\n", i, err);
goto destroy_queues;
}
j++;
}
err = mana_ib_gd_create_rc_qp(mdev, qp, attr, doorbell, flags);
if (err) {
ibdev_err(&mdev->ib_dev, "Failed to create rc qp %d\n", err);
goto destroy_queues;
}
qp->ibqp.qp_num = qp->rc_qp.queues[MANA_RC_RECV_QUEUE_RESPONDER].id;
qp->port = attr->port_num;
if (udata) {
for (i = 0, j = 0; i < MANA_RC_QUEUE_TYPE_MAX; ++i) {
if (i == MANA_RC_SEND_QUEUE_FMR)
continue;
resp.queue_id[j] = qp->rc_qp.queues[i].id;
j++;
}
err = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen));
if (err) {
ibdev_dbg(&mdev->ib_dev, "Failed to copy to udata, %d\n", err);
goto destroy_qp;
}
}
return 0;
destroy_qp:
mana_ib_gd_destroy_rc_qp(mdev, qp);
destroy_queues:
while (i-- > 0)
mana_ib_destroy_queue(mdev, &qp->rc_qp.queues[i]);
return err;
}
int mana_ib_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attr,
struct ib_udata *udata)
{
@ -409,8 +481,9 @@ int mana_ib_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attr,
udata);
return mana_ib_create_qp_raw(ibqp, ibqp->pd, attr, udata);
case IB_QPT_RC:
return mana_ib_create_rc_qp(ibqp, ibqp->pd, attr, udata);
default:
/* Creating QP other than IB_QPT_RAW_PACKET is not supported */
ibdev_dbg(ibqp->device, "Creating QP type %u not supported\n",
attr->qp_type);
}
@ -473,6 +546,22 @@ static int mana_ib_destroy_qp_raw(struct mana_ib_qp *qp, struct ib_udata *udata)
return 0;
}
static int mana_ib_destroy_rc_qp(struct mana_ib_qp *qp, struct ib_udata *udata)
{
struct mana_ib_dev *mdev =
container_of(qp->ibqp.device, struct mana_ib_dev, ib_dev);
int i;
/* Ignore return code as there is not much we can do about it.
* The error message is printed inside.
*/
mana_ib_gd_destroy_rc_qp(mdev, qp);
for (i = 0; i < MANA_RC_QUEUE_TYPE_MAX; ++i)
mana_ib_destroy_queue(mdev, &qp->rc_qp.queues[i]);
return 0;
}
int mana_ib_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata)
{
struct mana_ib_qp *qp = container_of(ibqp, struct mana_ib_qp, ibqp);
@ -484,7 +573,8 @@ int mana_ib_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata)
udata);
return mana_ib_destroy_qp_raw(qp, udata);
case IB_QPT_RC:
return mana_ib_destroy_rc_qp(qp, udata);
default:
ibdev_dbg(ibqp->device, "Unexpected QP type %u\n",
ibqp->qp_type);

9
include/uapi/rdma/mana-abi.h
View File

@ -45,6 +45,15 @@ struct mana_ib_create_qp_resp {
__u32 reserved;
};
struct mana_ib_create_rc_qp {
__aligned_u64 queue_buf[4];
__u32 queue_size[4];
};
struct mana_ib_create_rc_qp_resp {
__u32 queue_id[4];
};
struct mana_ib_create_wq {
__aligned_u64 wq_buf_addr;
__u32 wq_buf_size;