rdma/res-pd.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /*
   3  * res-pd.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_pd_line(struct rd *rd, const char *name, int idx,
  11                        struct nlattr **nla_line)
  12 {
  13         uint32_t local_dma_lkey = 0, unsafe_global_rkey = 0;
  14         char *comm = NULL;
  15         uint32_t ctxn = 0;
  16         uint32_t pid = 0;
  17         uint32_t pdn = 0;
  18         uint64_t users;
  19
  20         if (!nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||
  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_LOCAL_DMA_LKEY])
  27                 local_dma_lkey = mnl_attr_get_u32(
  28                         nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
  29
  30         users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
  31         if (rd_check_is_filtered(rd, "users", users))
  32                 goto out;
  33
  34         if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
  35                 unsafe_global_rkey = mnl_attr_get_u32(
  36                         nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
  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_check_is_filtered(rd, "pid", pid))
  44                 goto out;
  45
  46         if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
  47                 ctxn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
  48
  49         if (rd_check_is_filtered(rd, "ctxn", ctxn))
  50                 goto out;
  51
  52         if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])
  53                 pdn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  54         if (rd_check_is_filtered(rd, "pdn", pdn))
  55                 goto out;
  56
  57         if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
  58                 /* discard const from mnl_attr_get_str */
  59                 comm = (char *)mnl_attr_get_str(
  60                         nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
  61
  62         if (rd->json_output)
  63                 jsonw_start_array(rd->jw);
  64
  65         print_dev(rd, idx, name);
  66         res_print_uint(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  67         print_key(rd, "local_dma_lkey", local_dma_lkey,
  68                   nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
  69         res_print_uint(rd, "users", users,
  70                        nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
  71         print_key(rd, "unsafe_global_rkey", unsafe_global_rkey,
  72                   nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
  73         res_print_uint(rd, "ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
  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:    if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
  81                 free(comm);
  82         return MNL_CB_OK;
  83 }
  84
  85 int res_pd_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
  86 {
  87         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
  88         struct rd *rd = data;
  89         const char *name;
  90         uint32_t idx;
  91
  92         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
  93         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME])
  94                 return MNL_CB_ERROR;
  95
  96         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
  97         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
  98
  99         return res_pd_line(rd, name, idx, tb);
 100 }
 101
 102 int res_pd_parse_cb(const struct nlmsghdr *nlh, void *data)
 103 {
 104         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 105         struct nlattr *nla_table, *nla_entry;
 106         struct rd *rd = data;
 107         int ret = MNL_CB_OK;
 108         const char *name;
 109         uint32_t idx;
 110
 111         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
 112         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
 113             !tb[RDMA_NLDEV_ATTR_RES_PD])
 114                 return MNL_CB_ERROR;
 115
 116         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 117         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 118         nla_table = tb[RDMA_NLDEV_ATTR_RES_PD];
 119
 120         mnl_attr_for_each_nested(nla_entry, nla_table) {
 121                 struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
 122
 123                 ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
 124                 if (ret != MNL_CB_OK)
 125                         break;
 126
 127                 ret = res_pd_line(rd, name, idx, nla_line);
 128                 if (ret != MNL_CB_OK)
 129                         break;
 130         }
 131         return ret;
 132 }