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RDMA/mana_ib: implement uapi for creation of rnic cq

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Enable users to create RNIC CQs using a corresponding flag.
With the previous request size, an ethernet CQ is created.
As a response, return ID of the created CQ.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Link: https://lore.kernel.org/r/1714137160-5222-6-git-send-email-kotaranov@linux.microsoft.com
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Konstantin Taranov 2024-04-26 06:12:40 -07:00 committed by Leon Romanovsky
parent f79edef79b
commit 44b607ad4c
2 changed files with 63 additions and 4 deletions
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55
drivers/infiniband/hw/mana/cq.c
View file

@ -9,17 +9,22 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
struct ib_udata *udata)
{
struct mana_ib_cq *cq = container_of(ibcq, struct mana_ib_cq, ibcq);
struct mana_ib_create_cq_resp resp = {};
struct mana_ib_ucontext *mana_ucontext;
struct ib_device *ibdev = ibcq->device;
struct mana_ib_create_cq ucmd = {};
struct mana_ib_dev *mdev;
bool is_rnic_cq;
u32 doorbell;
int err;
mdev = container_of(ibdev, struct mana_ib_dev, ib_dev);
if (udata->inlen < sizeof(ucmd))
return -EINVAL;
cq->comp_vector = attr->comp_vector % ibdev->num_comp_vectors;
cq->cq_handle = INVALID_MANA_HANDLE;
if (udata->inlen < offsetof(struct mana_ib_create_cq, flags))
return -EINVAL;
err = ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen));
if (err) {
@ -28,7 +33,9 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
return err;
}
if (attr->cqe > mdev->adapter_caps.max_qp_wr) {
is_rnic_cq = !!(ucmd.flags & MANA_IB_CREATE_RNIC_CQ);
if (!is_rnic_cq && attr->cqe > mdev->adapter_caps.max_qp_wr) {
ibdev_dbg(ibdev, "CQE %d exceeding limit\n", attr->cqe);
return -EINVAL;
}
@ -40,7 +47,41 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
return err;
}
mana_ucontext = rdma_udata_to_drv_context(udata, struct mana_ib_ucontext,
ibucontext);
doorbell = mana_ucontext->doorbell;
if (is_rnic_cq) {
err = mana_ib_gd_create_cq(mdev, cq, doorbell);
if (err) {
ibdev_dbg(ibdev, "Failed to create RNIC cq, %d\n", err);
goto err_destroy_queue;
}
err = mana_ib_install_cq_cb(mdev, cq);
if (err) {
ibdev_dbg(ibdev, "Failed to install cq callback, %d\n", err);
goto err_destroy_rnic_cq;
}
}
resp.cqid = cq->queue.id;
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 err_remove_cq_cb;
}
return 0;
err_remove_cq_cb:
mana_ib_remove_cq_cb(mdev, cq);
err_destroy_rnic_cq:
mana_ib_gd_destroy_cq(mdev, cq);
err_destroy_queue:
mana_ib_destroy_queue(mdev, &cq->queue);
return err;
}
int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata)
@ -52,6 +93,12 @@ int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata)
mdev = container_of(ibdev, struct mana_ib_dev, ib_dev);
mana_ib_remove_cq_cb(mdev, cq);
/* Ignore return code as there is not much we can do about it.
* The error message is printed inside.
*/
mana_ib_gd_destroy_cq(mdev, cq);
mana_ib_destroy_queue(mdev, &cq->queue);
return 0;

12
include/uapi/rdma/mana-abi.h
View file

@ -16,8 +16,20 @@
#define MANA_IB_UVERBS_ABI_VERSION 1
enum mana_ib_create_cq_flags {
MANA_IB_CREATE_RNIC_CQ = 1 << 0,
};
struct mana_ib_create_cq {
__aligned_u64 buf_addr;
__u16 flags;
__u16 reserved0;
__u32 reserved1;
};
struct mana_ib_create_cq_resp {
__u32 cqid;
__u32 reserved;
};
struct mana_ib_create_qp {