mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
RDMA/efa: Add data polling capability feature bit
Add feature bit to existing device caps field. EFA supports data polling of 128 bytes blocks. The flag indicates that the NIC guarentees that a 128 byte aligned block is written in order, ie that observing the last 8 bits of the block mean the prior 127 bytes are also written. It is useful for "last data polling" acceleration techniques. Link: https://lore.kernel.org/r/20230219081328.10419-1-mrgolin@amazon.com Reviewed-by: Yehuda Yitschak <yehuday@amazon.com> Reviewed-by: Yossi Leybovich <sleybo@amazon.com> Signed-off-by: Yonatan Nachum <ynachum@amazon.com> Signed-off-by: Michael Margolin <mrgolin@amazon.com> Acked-by: Gal Pressman <gal.pressman@linux.dev> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
parent
901d9d6241
commit
6dddd93938
|
@ -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 2018-2023 Amazon.com, Inc. or its affiliates. All rights reserved.
|
||||
*/
|
||||
|
||||
#ifndef _EFA_ADMIN_CMDS_H_
|
||||
|
@ -618,7 +618,9 @@ struct efa_admin_feature_device_attr_desc {
|
|||
* TX queues
|
||||
* 1 : rnr_retry - If set, RNR retry is supported on
|
||||
* modify QP command
|
||||
* 31:2 : reserved - MBZ
|
||||
* 2 : data_polling_128 - If set, 128 bytes data
|
||||
* polling is supported
|
||||
* 31:3 : reserved - MBZ
|
||||
*/
|
||||
u32 device_caps;
|
||||
|
||||
|
@ -991,6 +993,7 @@ struct efa_admin_host_info {
|
|||
/* feature_device_attr_desc */
|
||||
#define EFA_ADMIN_FEATURE_DEVICE_ATTR_DESC_RDMA_READ_MASK BIT(0)
|
||||
#define EFA_ADMIN_FEATURE_DEVICE_ATTR_DESC_RNR_RETRY_MASK BIT(1)
|
||||
#define EFA_ADMIN_FEATURE_DEVICE_ATTR_DESC_DATA_POLLING_128_MASK BIT(2)
|
||||
|
||||
/* create_eq_cmd */
|
||||
#define EFA_ADMIN_CREATE_EQ_CMD_ENTRY_SIZE_WORDS_MASK GENMASK(4, 0)
|
||||
|
|
|
@ -1,6 +1,6 @@
|
|||
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
|
||||
/*
|
||||
* Copyright 2018-2022 Amazon.com, Inc. or its affiliates. All rights reserved.
|
||||
* Copyright 2018-2023 Amazon.com, Inc. or its affiliates. All rights reserved.
|
||||
*/
|
||||
|
||||
#include <linux/dma-buf.h>
|
||||
|
@ -250,6 +250,9 @@ int efa_query_device(struct ib_device *ibdev,
|
|||
if (EFA_DEV_CAP(dev, RNR_RETRY))
|
||||
resp.device_caps |= EFA_QUERY_DEVICE_CAPS_RNR_RETRY;
|
||||
|
||||
if (EFA_DEV_CAP(dev, DATA_POLLING_128))
|
||||
resp.device_caps |= EFA_QUERY_DEVICE_CAPS_DATA_POLLING_128;
|
||||
|
||||
if (dev->neqs)
|
||||
resp.device_caps |= EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS;
|
||||
|
||||
|
|
|
@ -1,6 +1,6 @@
|
|||
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
|
||||
/*
|
||||
* Copyright 2018-2022 Amazon.com, Inc. or its affiliates. All rights reserved.
|
||||
* Copyright 2018-2023 Amazon.com, Inc. or its affiliates. All rights reserved.
|
||||
*/
|
||||
|
||||
#ifndef EFA_ABI_USER_H
|
||||
|
@ -120,6 +120,7 @@ enum {
|
|||
EFA_QUERY_DEVICE_CAPS_RNR_RETRY = 1 << 1,
|
||||
EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS = 1 << 2,
|
||||
EFA_QUERY_DEVICE_CAPS_CQ_WITH_SGID = 1 << 3,
|
||||
EFA_QUERY_DEVICE_CAPS_DATA_POLLING_128 = 1 << 4,
|
||||
};
|
||||
|
||||
struct efa_ibv_ex_query_device_resp {
|
||||
|
|
Loading…
Reference in a new issue