cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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hns_roce_restrack.c (2197B)

      1// SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
      2// Copyright (c) 2019 Hisilicon Limited.
      3
      4#include <rdma/rdma_cm.h>
      5#include <rdma/restrack.h>
      6#include <uapi/rdma/rdma_netlink.h>
      7#include "hnae3.h"
      8#include "hns_roce_common.h"
      9#include "hns_roce_device.h"
     10#include "hns_roce_hw_v2.h"
     11
     12static int hns_roce_fill_cq(struct sk_buff *msg,
     13			    struct hns_roce_v2_cq_context *context)
     14{
     15	if (rdma_nl_put_driver_u32(msg, "state",
     16				   hr_reg_read(context, CQC_ARM_ST)))
     17
     18		goto err;
     19
     20	if (rdma_nl_put_driver_u32(msg, "ceqn",
     21				   hr_reg_read(context, CQC_CEQN)))
     22		goto err;
     23
     24	if (rdma_nl_put_driver_u32(msg, "cqn",
     25				   hr_reg_read(context, CQC_CQN)))
     26		goto err;
     27
     28	if (rdma_nl_put_driver_u32(msg, "hopnum",
     29				   hr_reg_read(context, CQC_CQE_HOP_NUM)))
     30		goto err;
     31
     32	if (rdma_nl_put_driver_u32(msg, "pi",
     33				   hr_reg_read(context, CQC_CQ_PRODUCER_IDX)))
     34		goto err;
     35
     36	if (rdma_nl_put_driver_u32(msg, "ci",
     37				   hr_reg_read(context, CQC_CQ_CONSUMER_IDX)))
     38		goto err;
     39
     40	if (rdma_nl_put_driver_u32(msg, "coalesce",
     41				   hr_reg_read(context, CQC_CQ_MAX_CNT)))
     42		goto err;
     43
     44	if (rdma_nl_put_driver_u32(msg, "period",
     45				   hr_reg_read(context, CQC_CQ_PERIOD)))
     46		goto err;
     47
     48	if (rdma_nl_put_driver_u32(msg, "cnt",
     49				   hr_reg_read(context, CQC_CQE_CNT)))
     50		goto err;
     51
     52	return 0;
     53
     54err:
     55	return -EMSGSIZE;
     56}
     57
     58int hns_roce_fill_res_cq_entry(struct sk_buff *msg,
     59			       struct ib_cq *ib_cq)
     60{
     61	struct hns_roce_dev *hr_dev = to_hr_dev(ib_cq->device);
     62	struct hns_roce_cq *hr_cq = to_hr_cq(ib_cq);
     63	struct hns_roce_v2_cq_context *context;
     64	struct nlattr *table_attr;
     65	int ret;
     66
     67	if (!hr_dev->dfx->query_cqc_info)
     68		return -EINVAL;
     69
     70	context = kzalloc(sizeof(struct hns_roce_v2_cq_context), GFP_KERNEL);
     71	if (!context)
     72		return -ENOMEM;
     73
     74	ret = hr_dev->dfx->query_cqc_info(hr_dev, hr_cq->cqn, (int *)context);
     75	if (ret)
     76		goto err;
     77
     78	table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
     79	if (!table_attr) {
     80		ret = -EMSGSIZE;
     81		goto err;
     82	}
     83
     84	if (hns_roce_fill_cq(msg, context)) {
     85		ret = -EMSGSIZE;
     86		goto err_cancel_table;
     87	}
     88
     89	nla_nest_end(msg, table_attr);
     90	kfree(context);
     91
     92	return 0;
     93
     94err_cancel_table:
     95	nla_nest_cancel(msg, table_attr);
     96err:
     97	kfree(context);
     98	return ret;
     99}