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                 return MNL_CB_ERROR;
  22
  23         if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])
  24                 local_dma_lkey = mnl_attr_get_u32(
  25                         nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
  26
  27         users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
  28         if (rd_is_filtered_attr(rd, "users", users,
  29                                 nla_line[RDMA_NLDEV_ATTR_RES_USECNT]))
  30                 goto out;
  31
  32         if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
  33                 unsafe_global_rkey = mnl_attr_get_u32(
  34                         nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
  35
  36         if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
  37                 pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  38                 comm = get_task_name(pid);
  39         }
  40
  41         if (rd_is_filtered_attr(rd, "pid", pid,
  42                                 nla_line[RDMA_NLDEV_ATTR_RES_PID]))
  43                 goto out;
  44
  45         if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
  46                 ctxn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
  47
  48         if (rd_is_filtered_attr(rd, "ctxn", ctxn,
  49                                 nla_line[RDMA_NLDEV_ATTR_RES_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_is_filtered_attr(rd, "pdn", pdn,
  55                                 nla_line[RDMA_NLDEV_ATTR_RES_PDN]))
  56                 goto out;
  57
  58         if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
  59                 /* discard const from mnl_attr_get_str */
  60                 comm = (char *)mnl_attr_get_str(
  61                         nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
  62
  63         if (rd->json_output)
  64                 jsonw_start_array(rd->jw);
  65
  66         print_dev(rd, idx, name);
  67         res_print_uint(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  68         print_key(rd, "local_dma_lkey", local_dma_lkey,
  69                   nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
  70         res_print_uint(rd, "users", users,
  71                        nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
  72         print_key(rd, "unsafe_global_rkey", unsafe_global_rkey,
  73                   nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
  74         res_print_uint(rd, "ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
  75         res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  76         print_comm(rd, comm, nla_line);
  77
  78         print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
  79         newline(rd);
  80
  81 out:    if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
  82                 free(comm);
  83         return MNL_CB_OK;
  84 }
  85
  86 int res_pd_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_pd_line(rd, name, idx, tb);
 101 }
 102
 103 int res_pd_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_PD])
 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_PD];
 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_pd_line(rd, name, idx, nla_line);
 129                 if (ret != MNL_CB_OK)
 130                         break;
 131         }
 132         return ret;
 133 }