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_check_is_filtered(rd, "mrlen", mrlen))
  35                 goto out;
  36
  37         if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
  38                 pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  39                 comm = get_task_name(pid);
  40         }
  41
  42         if (rd_check_is_filtered(rd, "pid", pid))
  43                 goto out;
  44
  45         if (nla_line[RDMA_NLDEV_ATTR_RES_MRN])
  46                 mrn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_MRN]);
  47         if (rd_check_is_filtered(rd, "mrn", 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_check_is_filtered(rd, "pdn", pdn))
  53                 goto out;
  54
  55         if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
  56                 /* discard const from mnl_attr_get_str */
  57                 comm = (char *)mnl_attr_get_str(
  58                         nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
  59
  60         if (rd->json_output)
  61                 jsonw_start_array(rd->jw);
  62
  63         print_dev(rd, idx, name);
  64         res_print_uint(rd, "mrn", mrn, nla_line[RDMA_NLDEV_ATTR_RES_MRN]);
  65         print_key(rd, "rkey", rkey, nla_line[RDMA_NLDEV_ATTR_RES_RKEY]);
  66         print_key(rd, "lkey", lkey, nla_line[RDMA_NLDEV_ATTR_RES_LKEY]);
  67         print_key(rd, "iova", iova, nla_line[RDMA_NLDEV_ATTR_RES_IOVA]);
  68         res_print_uint(rd, "mrlen", mrlen, nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]);
  69         res_print_uint(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  70         res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  71         print_comm(rd, comm, nla_line);
  72
  73         print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
  74         newline(rd);
  75
  76 out:
  77         if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
  78                 free(comm);
  79         return MNL_CB_OK;
  80 }
  81
  82 int res_mr_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
  83 {
  84         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
  85         struct rd *rd = data;
  86         const char *name;
  87         uint32_t idx;
  88
  89         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
  90         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME])
  91                 return MNL_CB_ERROR;
  92
  93         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
  94         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
  95
  96         return res_mr_line(rd, name, idx, tb);
  97 }
  98
  99 int res_mr_parse_cb(const struct nlmsghdr *nlh, void *data)
 100 {
 101         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 102         struct nlattr *nla_table, *nla_entry;
 103         struct rd *rd = data;
 104         int ret = MNL_CB_OK;
 105         const char *name;
 106         uint32_t idx;
 107
 108         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
 109         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
 110             !tb[RDMA_NLDEV_ATTR_RES_MR])
 111                 return MNL_CB_ERROR;
 112
 113         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 114         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 115         nla_table = tb[RDMA_NLDEV_ATTR_RES_MR];
 116
 117         mnl_attr_for_each_nested(nla_entry, nla_table) {
 118                 struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
 119
 120                 ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
 121                 if (ret != MNL_CB_OK)
 122                         break;
 123
 124                 ret = res_mr_line(rd, name, idx, nla_line);
 125                 if (ret != MNL_CB_OK)
 126                         break;
 127         }
 128         return ret;
 129 }