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authorMichael Margolin <mrgolin@amazon.com>2024-01-04 12:51:55 +0300
committerLeon Romanovsky <leon@kernel.org>2024-01-07 13:02:27 +0300
commit2307157c85096026043ba11f9ad8393c31515c45 (patch)
tree8ad747b4ce2a9a6bc997421a896b35a8f16a1391 /drivers/infiniband
parent2f1888281e67205bd80d3e8f54dbd519a9653f26 (diff)
downloadlinux-2307157c85096026043ba11f9ad8393c31515c45.tar.xz
RDMA/efa: Add EFA query MR support
Add EFA driver uapi definitions and register a new query MR method that currently returns the physical interconnects the device is using to reach the MR. Update admin definitions and efa-abi accordingly. Reviewed-by: Anas Mousa <anasmous@amazon.com> Reviewed-by: Firas Jahjah <firasj@amazon.com> Signed-off-by: Michael Margolin <mrgolin@amazon.com> Link: https://lore.kernel.org/r/20240104095155.10676-1-mrgolin@amazon.com Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/efa/efa.h12
-rw-r--r--drivers/infiniband/hw/efa/efa_admin_cmds_defs.h33
-rw-r--r--drivers/infiniband/hw/efa/efa_com_cmd.c11
-rw-r--r--drivers/infiniband/hw/efa/efa_com_cmd.h12
-rw-r--r--drivers/infiniband/hw/efa/efa_main.c7
-rw-r--r--drivers/infiniband/hw/efa/efa_verbs.c71
6 files changed, 140 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/efa/efa.h b/drivers/infiniband/hw/efa/efa.h
index 7352a1f5d811..e2bdec32ae80 100644
--- a/drivers/infiniband/hw/efa/efa.h
+++ b/drivers/infiniband/hw/efa/efa.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
/*
- * Copyright 2018-2021 Amazon.com, Inc. or its affiliates. All rights reserved.
+ * Copyright 2018-2024 Amazon.com, Inc. or its affiliates. All rights reserved.
*/
#ifndef _EFA_H_
@@ -80,9 +80,19 @@ struct efa_pd {
u16 pdn;
};
+struct efa_mr_interconnect_info {
+ u16 recv_ic_id;
+ u16 rdma_read_ic_id;
+ u16 rdma_recv_ic_id;
+ u8 recv_ic_id_valid : 1;
+ u8 rdma_read_ic_id_valid : 1;
+ u8 rdma_recv_ic_id_valid : 1;
+};
+
struct efa_mr {
struct ib_mr ibmr;
struct ib_umem *umem;
+ struct efa_mr_interconnect_info ic_info;
};
struct efa_cq {
diff --git a/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h b/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h
index 9c65bd27bae0..7377c8a9f4d5 100644
--- a/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h
+++ b/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
/*
- * Copyright 2018-2023 Amazon.com, Inc. or its affiliates. All rights reserved.
+ * Copyright 2018-2024 Amazon.com, Inc. or its affiliates. All rights reserved.
*/
#ifndef _EFA_ADMIN_CMDS_H_
@@ -415,6 +415,32 @@ struct efa_admin_reg_mr_resp {
* memory region
*/
u32 r_key;
+
+ /*
+ * Mask indicating which fields have valid values
+ * 0 : recv_ic_id
+ * 1 : rdma_read_ic_id
+ * 2 : rdma_recv_ic_id
+ */
+ u8 validity;
+
+ /*
+ * Physical interconnect used by the device to reach the MR for receive
+ * operation
+ */
+ u8 recv_ic_id;
+
+ /*
+ * Physical interconnect used by the device to reach the MR for RDMA
+ * read operation
+ */
+ u8 rdma_read_ic_id;
+
+ /*
+ * Physical interconnect used by the device to reach the MR for RDMA
+ * write receive
+ */
+ u8 rdma_recv_ic_id;
};
struct efa_admin_dereg_mr_cmd {
@@ -999,6 +1025,11 @@ struct efa_admin_host_info {
#define EFA_ADMIN_REG_MR_CMD_REMOTE_WRITE_ENABLE_MASK BIT(1)
#define EFA_ADMIN_REG_MR_CMD_REMOTE_READ_ENABLE_MASK BIT(2)
+/* reg_mr_resp */
+#define EFA_ADMIN_REG_MR_RESP_RECV_IC_ID_MASK BIT(0)
+#define EFA_ADMIN_REG_MR_RESP_RDMA_READ_IC_ID_MASK BIT(1)
+#define EFA_ADMIN_REG_MR_RESP_RDMA_RECV_IC_ID_MASK BIT(2)
+
/* create_cq_cmd */
#define EFA_ADMIN_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_MASK BIT(5)
#define EFA_ADMIN_CREATE_CQ_CMD_VIRT_MASK BIT(6)
diff --git a/drivers/infiniband/hw/efa/efa_com_cmd.c b/drivers/infiniband/hw/efa/efa_com_cmd.c
index 576811885d59..d3398c7b0bd0 100644
--- a/drivers/infiniband/hw/efa/efa_com_cmd.c
+++ b/drivers/infiniband/hw/efa/efa_com_cmd.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
/*
- * Copyright 2018-2023 Amazon.com, Inc. or its affiliates. All rights reserved.
+ * Copyright 2018-2024 Amazon.com, Inc. or its affiliates. All rights reserved.
*/
#include "efa_com.h"
@@ -270,6 +270,15 @@ int efa_com_register_mr(struct efa_com_dev *edev,
result->l_key = cmd_completion.l_key;
result->r_key = cmd_completion.r_key;
+ result->ic_info.recv_ic_id = cmd_completion.recv_ic_id;
+ result->ic_info.rdma_read_ic_id = cmd_completion.rdma_read_ic_id;
+ result->ic_info.rdma_recv_ic_id = cmd_completion.rdma_recv_ic_id;
+ result->ic_info.recv_ic_id_valid = EFA_GET(&cmd_completion.validity,
+ EFA_ADMIN_REG_MR_RESP_RECV_IC_ID);
+ result->ic_info.rdma_read_ic_id_valid = EFA_GET(&cmd_completion.validity,
+ EFA_ADMIN_REG_MR_RESP_RDMA_READ_IC_ID);
+ result->ic_info.rdma_recv_ic_id_valid = EFA_GET(&cmd_completion.validity,
+ EFA_ADMIN_REG_MR_RESP_RDMA_RECV_IC_ID);
return 0;
}
diff --git a/drivers/infiniband/hw/efa/efa_com_cmd.h b/drivers/infiniband/hw/efa/efa_com_cmd.h
index fc97f37bb39b..720a99ba0f7d 100644
--- a/drivers/infiniband/hw/efa/efa_com_cmd.h
+++ b/drivers/infiniband/hw/efa/efa_com_cmd.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
/*
- * Copyright 2018-2023 Amazon.com, Inc. or its affiliates. All rights reserved.
+ * Copyright 2018-2024 Amazon.com, Inc. or its affiliates. All rights reserved.
*/
#ifndef _EFA_COM_CMD_H_
@@ -199,6 +199,15 @@ struct efa_com_reg_mr_params {
u8 indirect;
};
+struct efa_com_mr_interconnect_info {
+ u16 recv_ic_id;
+ u16 rdma_read_ic_id;
+ u16 rdma_recv_ic_id;
+ u8 recv_ic_id_valid : 1;
+ u8 rdma_read_ic_id_valid : 1;
+ u8 rdma_recv_ic_id_valid : 1;
+};
+
struct efa_com_reg_mr_result {
/*
* To be used in conjunction with local buffers references in SQ and
@@ -210,6 +219,7 @@ struct efa_com_reg_mr_result {
* accessed memory region
*/
u32 r_key;
+ struct efa_com_mr_interconnect_info ic_info;
};
struct efa_com_dereg_mr_params {
diff --git a/drivers/infiniband/hw/efa/efa_main.c b/drivers/infiniband/hw/efa/efa_main.c
index 15ee92081118..7b1910a86216 100644
--- a/drivers/infiniband/hw/efa/efa_main.c
+++ b/drivers/infiniband/hw/efa/efa_main.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
/*
- * Copyright 2018-2022 Amazon.com, Inc. or its affiliates. All rights reserved.
+ * Copyright 2018-2024 Amazon.com, Inc. or its affiliates. All rights reserved.
*/
#include <linux/module.h>
@@ -9,6 +9,7 @@
#include <linux/version.h>
#include <rdma/ib_user_verbs.h>
+#include <rdma/uverbs_ioctl.h>
#include "efa.h"
@@ -36,6 +37,8 @@ MODULE_DEVICE_TABLE(pci, efa_pci_tbl);
(BIT(EFA_ADMIN_FATAL_ERROR) | BIT(EFA_ADMIN_WARNING) | \
BIT(EFA_ADMIN_NOTIFICATION) | BIT(EFA_ADMIN_KEEP_ALIVE))
+extern const struct uapi_definition efa_uapi_defs[];
+
/* This handler will called for unknown event group or unimplemented handlers */
static void unimplemented_aenq_handler(void *data,
struct efa_admin_aenq_entry *aenq_e)
@@ -432,6 +435,8 @@ static int efa_ib_device_add(struct efa_dev *dev)
ib_set_device_ops(&dev->ibdev, &efa_dev_ops);
+ dev->ibdev.driver_def = efa_uapi_defs;
+
err = ib_register_device(&dev->ibdev, "efa_%d", &pdev->dev);
if (err)
goto err_destroy_eqs;
diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c
index 0f8ca99d0827..2f412db2edcd 100644
--- a/drivers/infiniband/hw/efa/efa_verbs.c
+++ b/drivers/infiniband/hw/efa/efa_verbs.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
- * Copyright 2018-2023 Amazon.com, Inc. or its affiliates. All rights reserved.
+ * Copyright 2018-2024 Amazon.com, Inc. or its affiliates. All rights reserved.
*/
#include <linux/dma-buf.h>
@@ -13,6 +13,9 @@
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_verbs.h>
#include <rdma/uverbs_ioctl.h>
+#define UVERBS_MODULE_NAME efa_ib
+#include <rdma/uverbs_named_ioctl.h>
+#include <rdma/ib_user_ioctl_cmds.h>
#include "efa.h"
#include "efa_io_defs.h"
@@ -1653,6 +1656,12 @@ static int efa_register_mr(struct ib_pd *ibpd, struct efa_mr *mr, u64 start,
mr->ibmr.lkey = result.l_key;
mr->ibmr.rkey = result.r_key;
mr->ibmr.length = length;
+ mr->ic_info.recv_ic_id = result.ic_info.recv_ic_id;
+ mr->ic_info.rdma_read_ic_id = result.ic_info.rdma_read_ic_id;
+ mr->ic_info.rdma_recv_ic_id = result.ic_info.rdma_recv_ic_id;
+ mr->ic_info.recv_ic_id_valid = result.ic_info.recv_ic_id_valid;
+ mr->ic_info.rdma_read_ic_id_valid = result.ic_info.rdma_read_ic_id_valid;
+ mr->ic_info.rdma_recv_ic_id_valid = result.ic_info.rdma_recv_ic_id_valid;
ibdev_dbg(&dev->ibdev, "Registered mr[%d]\n", mr->ibmr.lkey);
return 0;
@@ -1735,6 +1744,39 @@ err_out:
return ERR_PTR(err);
}
+static int UVERBS_HANDLER(EFA_IB_METHOD_MR_QUERY)(struct uverbs_attr_bundle *attrs)
+{
+ struct ib_mr *ibmr = uverbs_attr_get_obj(attrs, EFA_IB_ATTR_QUERY_MR_HANDLE);
+ struct efa_mr *mr = to_emr(ibmr);
+ u16 ic_id_validity = 0;
+ int ret;
+
+ ret = uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_RECV_IC_ID,
+ &mr->ic_info.recv_ic_id, sizeof(mr->ic_info.recv_ic_id));
+ if (ret)
+ return ret;
+
+ ret = uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_RDMA_READ_IC_ID,
+ &mr->ic_info.rdma_read_ic_id, sizeof(mr->ic_info.rdma_read_ic_id));
+ if (ret)
+ return ret;
+
+ ret = uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_RDMA_RECV_IC_ID,
+ &mr->ic_info.rdma_recv_ic_id, sizeof(mr->ic_info.rdma_recv_ic_id));
+ if (ret)
+ return ret;
+
+ if (mr->ic_info.recv_ic_id_valid)
+ ic_id_validity |= EFA_QUERY_MR_VALIDITY_RECV_IC_ID;
+ if (mr->ic_info.rdma_read_ic_id_valid)
+ ic_id_validity |= EFA_QUERY_MR_VALIDITY_RDMA_READ_IC_ID;
+ if (mr->ic_info.rdma_recv_ic_id_valid)
+ ic_id_validity |= EFA_QUERY_MR_VALIDITY_RDMA_RECV_IC_ID;
+
+ return uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_IC_ID_VALIDITY,
+ &ic_id_validity, sizeof(ic_id_validity));
+}
+
int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata)
{
struct efa_dev *dev = to_edev(ibmr->device);
@@ -2157,3 +2199,30 @@ enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev,
return IB_LINK_LAYER_UNSPECIFIED;
}
+DECLARE_UVERBS_NAMED_METHOD(EFA_IB_METHOD_MR_QUERY,
+ UVERBS_ATTR_IDR(EFA_IB_ATTR_QUERY_MR_HANDLE,
+ UVERBS_OBJECT_MR,
+ UVERBS_ACCESS_READ,
+ UA_MANDATORY),
+ UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_IC_ID_VALIDITY,
+ UVERBS_ATTR_TYPE(u16),
+ UA_MANDATORY),
+ UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_RECV_IC_ID,
+ UVERBS_ATTR_TYPE(u16),
+ UA_MANDATORY),
+ UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_RDMA_READ_IC_ID,
+ UVERBS_ATTR_TYPE(u16),
+ UA_MANDATORY),
+ UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_RDMA_RECV_IC_ID,
+ UVERBS_ATTR_TYPE(u16),
+ UA_MANDATORY));
+
+ADD_UVERBS_METHODS(efa_mr,
+ UVERBS_OBJECT_MR,
+ &UVERBS_METHOD(EFA_IB_METHOD_MR_QUERY));
+
+const struct uapi_definition efa_uapi_defs[] = {
+ UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_MR,
+ &efa_mr),
+ {},
+};