rdma/res-mr.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /*
   3  * res-mr.c     RDMA tool
   4  * Authors:     Leon Romanovsky <leonro@mellanox.com>
   5  */
   6
   7 #include "res.h"
   8 #include <inttypes.h>
   9
  10 static int res_mr_line(struct rd *rd, const char *name, int idx,
  11                        struct nlattr **nla_line)
  12 {
  13         uint32_t rkey = 0, lkey = 0;
  14         uint64_t iova = 0, mrlen;
  15         char *comm = NULL;
  16         uint32_t pdn = 0;
  17         uint32_t mrn = 0;
  18         uint32_t pid = 0;
  19
  20         if (!nla_line[RDMA_NLDEV_ATTR_RES_MRLEN] ||
  21             (!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
  22              !nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
  23                 return MNL_CB_ERROR;
  24         }
  25
  26         if (nla_line[RDMA_NLDEV_ATTR_RES_RKEY])
  27                 rkey = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_RKEY]);
  28         if (nla_line[RDMA_NLDEV_ATTR_RES_LKEY])
  29                 lkey = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_LKEY]);
  30         if (nla_line[RDMA_NLDEV_ATTR_RES_IOVA])
  31                 iova = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_IOVA]);
  32
  33         mrlen = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]);
  34         if (rd_is_filtered_attr(rd, "mrlen", mrlen,
  35                                 nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]))
  36                 goto out;
  37
  38         if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
  39                 pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  40                 comm = get_task_name(pid);
  41         }
  42
  43         if (rd_is_filtered_attr(rd, "pid", pid,
  44                                 nla_line[RDMA_NLDEV_ATTR_RES_PID]))
  45                 goto out;
  46
  47         if (nla_line[RDMA_NLDEV_ATTR_RES_MRN])
  48                 mrn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_MRN]);
  49         if (rd_is_filtered_attr(rd, "mrn", mrn,
  50                                 nla_line[RDMA_NLDEV_ATTR_RES_MRN]))
  51                 goto out;
  52
  53         if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])
  54                 pdn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  55         if (rd_is_filtered_attr(rd, "pdn", pdn,
  56                                 nla_line[RDMA_NLDEV_ATTR_RES_PDN]))
  57                 goto out;
  58
  59         if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
  60                 /* discard const from mnl_attr_get_str */
  61                 comm = (char *)mnl_attr_get_str(
  62                         nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
  63
  64         if (rd->json_output)
  65                 jsonw_start_array(rd->jw);
  66
  67         print_dev(rd, idx, name);
  68         res_print_uint(rd, "mrn", mrn, nla_line[RDMA_NLDEV_ATTR_RES_MRN]);
  69         print_key(rd, "rkey", rkey, nla_line[RDMA_NLDEV_ATTR_RES_RKEY]);
  70         print_key(rd, "lkey", lkey, nla_line[RDMA_NLDEV_ATTR_RES_LKEY]);
  71         print_key(rd, "iova", iova, nla_line[RDMA_NLDEV_ATTR_RES_IOVA]);
  72         res_print_uint(rd, "mrlen", mrlen, nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]);
  73         res_print_uint(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  74         res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  75         print_comm(rd, comm, nla_line);
  76
  77         print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
  78         newline(rd);
  79
  80 out:
  81         if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
  82                 free(comm);
  83         return MNL_CB_OK;
  84 }
  85
  86 int res_mr_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
  87 {
  88         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
  89         struct rd *rd = data;
  90         const char *name;
  91         uint32_t idx;
  92
  93         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
  94         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME])
  95                 return MNL_CB_ERROR;
  96
  97         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
  98         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
  99
 100         return res_mr_line(rd, name, idx, tb);
 101 }
 102
 103 int res_mr_parse_cb(const struct nlmsghdr *nlh, void *data)
 104 {
 105         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 106         struct nlattr *nla_table, *nla_entry;
 107         struct rd *rd = data;
 108         int ret = MNL_CB_OK;
 109         const char *name;
 110         uint32_t idx;
 111
 112         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
 113         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
 114             !tb[RDMA_NLDEV_ATTR_RES_MR])
 115                 return MNL_CB_ERROR;
 116
 117         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 118         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 119         nla_table = tb[RDMA_NLDEV_ATTR_RES_MR];
 120
 121         mnl_attr_for_each_nested(nla_entry, nla_table) {
 122                 struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
 123
 124                 ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
 125                 if (ret != MNL_CB_OK)
 126                         break;
 127
 128                 ret = res_mr_line(rd, name, idx, nla_line);
 129                 if (ret != MNL_CB_OK)
 130                         break;
 131         }
 132         return ret;
 133 }