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                 return MNL_CB_ERROR;
  22
  23         if (nla_line[RDMA_NLDEV_ATTR_RES_RKEY])
  24                 rkey = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_RKEY]);
  25         if (nla_line[RDMA_NLDEV_ATTR_RES_LKEY])
  26                 lkey = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_LKEY]);
  27         if (nla_line[RDMA_NLDEV_ATTR_RES_IOVA])
  28                 iova = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_IOVA]);
  29
  30         mrlen = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]);
  31         if (rd_is_filtered_attr(rd, "mrlen", mrlen,
  32                                 nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]))
  33                 goto out;
  34
  35         if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
  36                 pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  37                 comm = get_task_name(pid);
  38         }
  39
  40         if (rd_is_filtered_attr(rd, "pid", pid,
  41                                 nla_line[RDMA_NLDEV_ATTR_RES_PID]))
  42                 goto out;
  43
  44         if (nla_line[RDMA_NLDEV_ATTR_RES_MRN])
  45                 mrn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_MRN]);
  46         if (rd_is_filtered_attr(rd, "mrn", mrn,
  47                                 nla_line[RDMA_NLDEV_ATTR_RES_MRN]))
  48                 goto out;
  49
  50         if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])
  51                 pdn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  52         if (rd_is_filtered_attr(rd, "pdn", pdn,
  53                                 nla_line[RDMA_NLDEV_ATTR_RES_PDN]))
  54                 goto out;
  55
  56         if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
  57                 /* discard const from mnl_attr_get_str */
  58                 comm = (char *)mnl_attr_get_str(
  59                         nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
  60         open_json_object(NULL);
  61         print_dev(rd, idx, name);
  62         res_print_uint(rd, "mrn", mrn, nla_line[RDMA_NLDEV_ATTR_RES_MRN]);
  63         print_key(rd, "rkey", rkey, nla_line[RDMA_NLDEV_ATTR_RES_RKEY]);
  64         print_key(rd, "lkey", lkey, nla_line[RDMA_NLDEV_ATTR_RES_LKEY]);
  65         print_key(rd, "iova", iova, nla_line[RDMA_NLDEV_ATTR_RES_IOVA]);
  66         res_print_uint(rd, "mrlen", mrlen, nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]);
  67         res_print_uint(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  68         res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  69         print_comm(rd, comm, nla_line);
  70
  71         print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
  72         newline(rd);
  73
  74 out:
  75         if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
  76                 free(comm);
  77         return MNL_CB_OK;
  78 }
  79
  80 int res_mr_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
  81 {
  82         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
  83         struct rd *rd = data;
  84         const char *name;
  85         uint32_t idx;
  86
  87         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
  88         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME])
  89                 return MNL_CB_ERROR;
  90
  91         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
  92         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
  93
  94         return res_mr_line(rd, name, idx, tb);
  95 }
  96
  97 int res_mr_parse_cb(const struct nlmsghdr *nlh, void *data)
  98 {
  99         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 100         struct nlattr *nla_table, *nla_entry;
 101         struct rd *rd = data;
 102         int ret = MNL_CB_OK;
 103         const char *name;
 104         uint32_t idx;
 105
 106         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
 107         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
 108             !tb[RDMA_NLDEV_ATTR_RES_MR])
 109                 return MNL_CB_ERROR;
 110
 111         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 112         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 113         nla_table = tb[RDMA_NLDEV_ATTR_RES_MR];
 114
 115         mnl_attr_for_each_nested(nla_entry, nla_table) {
 116                 struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
 117
 118                 ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
 119                 if (ret != MNL_CB_OK)
 120                         break;
 121
 122                 ret = res_mr_line(rd, name, idx, nla_line);
 123                 if (ret != MNL_CB_OK)
 124                         break;
 125         }
 126         return ret;
 127 }