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Subject[PATCH rdma-next v2 2/5] RDMA/mana_ib: Create and destroy rnic adapter
Date
This patch adds RNIC creation and destruction.
If creation of RNIC fails, we support only RAW QPs as they are served by
ethernet driver.

Signed-off-by: Konstantin Taranov <kotaranov@linux.microsoft.com>
---
drivers/infiniband/hw/mana/main.c | 31 +++++++++++++++++++++++++++++++
drivers/infiniband/hw/mana/mana_ib.h | 29 +++++++++++++++++++++++++++++
2 files changed, 60 insertions(+)

diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index c64d569..33cd69e 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -581,14 +581,31 @@ static void mana_ib_destroy_eqs(struct mana_ib_dev *mdev)

void mana_ib_gd_create_rnic_adapter(struct mana_ib_dev *mdev)
{
+ struct mana_rnic_create_adapter_resp resp = {};
+ struct mana_rnic_create_adapter_req req = {};
+ struct gdma_context *gc = mdev_to_gc(mdev);
int err;

+ mdev->adapter_handle = INVALID_MANA_HANDLE;
+
err = mana_ib_create_eqs(mdev);
if (err) {
ibdev_err(&mdev->ib_dev, "Failed to create EQs for RNIC err %d", err);
goto cleanup;
}

+ mana_gd_init_req_hdr(&req.hdr, MANA_IB_CREATE_ADAPTER, sizeof(req), sizeof(resp));
+ req.hdr.req.msg_version = GDMA_MESSAGE_V2;
+ req.hdr.dev_id = gc->mana_ib.dev_id;
+ req.notify_eq_id = mdev->fatal_err_eq->id;
+
+ err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+ if (err) {
+ ibdev_err(&mdev->ib_dev, "Failed to create RNIC adapter err %d", err);
+ goto cleanup;
+ }
+ mdev->adapter_handle = resp.adapter;
+
return;

cleanup:
@@ -599,5 +616,19 @@ void mana_ib_gd_create_rnic_adapter(struct mana_ib_dev *mdev)

void mana_ib_gd_destroy_rnic_adapter(struct mana_ib_dev *mdev)
{
+ struct mana_rnic_destroy_adapter_resp resp = {};
+ struct mana_rnic_destroy_adapter_req req = {};
+ struct gdma_context *gc;
+
+ if (!rnic_is_enabled(mdev))
+ return;
+
+ gc = mdev_to_gc(mdev);
+ mana_gd_init_req_hdr(&req.hdr, MANA_IB_DESTROY_ADAPTER, sizeof(req), sizeof(resp));
+ req.hdr.dev_id = gc->mana_ib.dev_id;
+ req.adapter = mdev->adapter_handle;
+
+ mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+ mdev->adapter_handle = INVALID_MANA_HANDLE;
mana_ib_destroy_eqs(mdev);
}
diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index a4b94ee..96454cf 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -48,6 +48,7 @@ struct mana_ib_adapter_caps {
struct mana_ib_dev {
struct ib_device ib_dev;
struct gdma_dev *gdma_dev;
+ mana_handle_t adapter_handle;
struct gdma_queue *fatal_err_eq;
struct mana_ib_adapter_caps adapter_caps;
};
@@ -115,6 +116,8 @@ struct mana_ib_rwq_ind_table {

enum mana_ib_command_code {
MANA_IB_GET_ADAPTER_CAP = 0x30001,
+ MANA_IB_CREATE_ADAPTER = 0x30002,
+ MANA_IB_DESTROY_ADAPTER = 0x30003,
};

struct mana_ib_query_adapter_caps_req {
@@ -143,6 +146,32 @@ struct mana_ib_query_adapter_caps_resp {
u32 max_inline_data_size;
}; /* HW Data */

+struct mana_rnic_create_adapter_req {
+ struct gdma_req_hdr hdr;
+ u32 notify_eq_id;
+ u32 reserved;
+ u64 feature_flags;
+}; /*HW Data */
+
+struct mana_rnic_create_adapter_resp {
+ struct gdma_resp_hdr hdr;
+ mana_handle_t adapter;
+}; /* HW Data */
+
+struct mana_rnic_destroy_adapter_req {
+ struct gdma_req_hdr hdr;
+ mana_handle_t adapter;
+}; /*HW Data */
+
+struct mana_rnic_destroy_adapter_resp {
+ struct gdma_resp_hdr hdr;
+}; /* HW Data */
+
+static inline bool rnic_is_enabled(struct mana_ib_dev *mdev)
+{
+ return mdev->adapter_handle != INVALID_MANA_HANDLE;
+}
+
static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev *mdev)
{
return mdev->gdma_dev->gdma_context;
--
1.8.3.1

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