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_entry)
  12 {
  13         struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
  14         uint32_t rkey = 0, lkey = 0;
  15         uint64_t iova = 0, mrlen;
  16         char *comm = NULL;
  17         uint32_t pdn = 0;
  18         uint32_t mrn = 0;
  19         uint32_t pid = 0;
  20         int err;
  21
  22         err = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
  23         if (err != MNL_CB_OK)
  24                 return MNL_CB_ERROR;
  25
  26         if (!nla_line[RDMA_NLDEV_ATTR_RES_MRLEN] ||
  27             (!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
  28              !nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
  29                 return MNL_CB_ERROR;
  30         }
  31
  32         if (nla_line[RDMA_NLDEV_ATTR_RES_RKEY])
  33                 rkey = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_RKEY]);
  34         if (nla_line[RDMA_NLDEV_ATTR_RES_LKEY])
  35                 lkey = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_LKEY]);
  36         if (nla_line[RDMA_NLDEV_ATTR_RES_IOVA])
  37                 iova = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_IOVA]);
  38
  39         mrlen = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]);
  40         if (rd_check_is_filtered(rd, "mrlen", mrlen))
  41                 goto out;
  42
  43         if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
  44                 pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  45                 comm = get_task_name(pid);
  46         }
  47
  48         if (rd_check_is_filtered(rd, "pid", pid))
  49                 goto out;
  50
  51         if (nla_line[RDMA_NLDEV_ATTR_RES_MRN])
  52                 mrn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_MRN]);
  53         if (rd_check_is_filtered(rd, "mrn", mrn))
  54                 goto out;
  55
  56         if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])
  57                 pdn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  58         if (rd_check_is_filtered(rd, "pdn", pdn))
  59                 goto out;
  60
  61         if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
  62                 /* discard const from mnl_attr_get_str */
  63                 comm = (char *)mnl_attr_get_str(
  64                         nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
  65
  66         if (rd->json_output)
  67                 jsonw_start_array(rd->jw);
  68
  69         print_dev(rd, idx, name);
  70         res_print_uint(rd, "mrn", mrn, nla_line[RDMA_NLDEV_ATTR_RES_MRN]);
  71         print_key(rd, "rkey", rkey, nla_line[RDMA_NLDEV_ATTR_RES_RKEY]);
  72         print_key(rd, "lkey", lkey, nla_line[RDMA_NLDEV_ATTR_RES_LKEY]);
  73         print_key(rd, "iova", iova, nla_line[RDMA_NLDEV_ATTR_RES_IOVA]);
  74         res_print_uint(rd, "mrlen", mrlen, nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]);
  75         res_print_uint(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  76         res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  77         print_comm(rd, comm, nla_line);
  78
  79         print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
  80         newline(rd);
  81
  82 out:
  83         if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
  84                 free(comm);
  85         return MNL_CB_OK;
  86 }
  87 int res_mr_parse_cb(const struct nlmsghdr *nlh, void *data)
  88 {
  89         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
  90         struct nlattr *nla_table, *nla_entry;
  91         struct rd *rd = data;
  92         int ret = MNL_CB_OK;
  93         const char *name;
  94         uint32_t idx;
  95
  96         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
  97         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
  98             !tb[RDMA_NLDEV_ATTR_RES_MR])
  99                 return MNL_CB_ERROR;
 100
 101         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 102         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 103         nla_table = tb[RDMA_NLDEV_ATTR_RES_MR];
 104
 105         mnl_attr_for_each_nested(nla_entry, nla_table) {
 106                 ret = res_mr_line(rd, name, idx, nla_entry);
 107
 108                 if (ret != MNL_CB_OK)
 109                         break;
 110         }
 111         return ret;
 112 }