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         open_json_object(NULL);
  64         print_dev(rd, idx, name);
  65         res_print_uint(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
  66         print_key(rd, "local_dma_lkey", local_dma_lkey,
  67                   nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
  68         res_print_uint(rd, "users", users,
  69                        nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
  70         print_key(rd, "unsafe_global_rkey", unsafe_global_rkey,
  71                   nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
  72         res_print_uint(rd, "ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
  73         res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  74         print_comm(rd, comm, nla_line);
  75
  76         print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
  77         newline(rd);
  78
  79 out:    if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
  80                 free(comm);
  81         return MNL_CB_OK;
  82 }
  83
  84 int res_pd_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
  85 {
  86         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
  87         struct rd *rd = data;
  88         const char *name;
  89         uint32_t idx;
  90
  91         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
  92         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME])
  93                 return MNL_CB_ERROR;
  94
  95         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
  96         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
  97
  98         return res_pd_line(rd, name, idx, tb);
  99 }
 100
 101 int res_pd_parse_cb(const struct nlmsghdr *nlh, void *data)
 102 {
 103         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 104         struct nlattr *nla_table, *nla_entry;
 105         struct rd *rd = data;
 106         int ret = MNL_CB_OK;
 107         const char *name;
 108         uint32_t idx;
 109
 110         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
 111         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
 112             !tb[RDMA_NLDEV_ATTR_RES_PD])
 113                 return MNL_CB_ERROR;
 114
 115         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 116         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 117         nla_table = tb[RDMA_NLDEV_ATTR_RES_PD];
 118
 119         mnl_attr_for_each_nested(nla_entry, nla_table) {
 120                 struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
 121
 122                 ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
 123                 if (ret != MNL_CB_OK)
 124                         break;
 125
 126                 ret = res_pd_line(rd, name, idx, nla_line);
 127                 if (ret != MNL_CB_OK)
 128                         break;
 129         }
 130         return ret;
 131 }