rdma/res.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /*
   3  * res.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_help(struct rd *rd)
  11 {
  12         pr_out("Usage: %s resource\n", rd->filename);
  13         pr_out("          resource show [DEV]\n");
  14         pr_out("          resource show [qp|cm_id|pd|mr|cq]\n");
  15         pr_out("          resource show qp link [DEV/PORT]\n");
  16         pr_out("          resource show qp link [DEV/PORT] [FILTER-NAME FILTER-VALUE]\n");
  17         pr_out("          resource show cm_id link [DEV/PORT]\n");
  18         pr_out("          resource show cm_id link [DEV/PORT] [FILTER-NAME FILTER-VALUE]\n");
  19         pr_out("          resource show cq link [DEV/PORT]\n");
  20         pr_out("          resource show cq link [DEV/PORT] [FILTER-NAME FILTER-VALUE]\n");
  21         pr_out("          resource show pd dev [DEV]\n");
  22         pr_out("          resource show pd dev [DEV] [FILTER-NAME FILTER-VALUE]\n");
  23         pr_out("          resource show mr dev [DEV]\n");
  24         pr_out("          resource show mr dev [DEV] [FILTER-NAME FILTER-VALUE]\n");
  25         return 0;
  26 }
  27
  28 static int res_print_summary(struct rd *rd, struct nlattr **tb)
  29 {
  30         struct nlattr *nla_table = tb[RDMA_NLDEV_ATTR_RES_SUMMARY];
  31         struct nlattr *nla_entry;
  32         const char *name;
  33         uint64_t curr;
  34         int err;
  35
  36         mnl_attr_for_each_nested(nla_entry, nla_table) {
  37                 struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
  38
  39                 err = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
  40                 if (err != MNL_CB_OK)
  41                         return -EINVAL;
  42
  43                 if (!nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME] ||
  44                     !nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]) {
  45                         return -EINVAL;
  46                 }
  47
  48                 name = mnl_attr_get_str(nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME]);
  49                 curr = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]);
  50                 res_print_uint(
  51                         rd, name, curr,
  52                         nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]);
  53         }
  54         return 0;
  55 }
  56
  57 static int res_no_args_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
  58 {
  59         return MNL_CB_OK;
  60 }
  61
  62 static int res_no_args_parse_cb(const struct nlmsghdr *nlh, void *data)
  63 {
  64         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
  65         struct rd *rd = data;
  66         const char *name;
  67         uint32_t idx;
  68
  69         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
  70         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
  71             !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
  72             !tb[RDMA_NLDEV_ATTR_RES_SUMMARY])
  73                 return MNL_CB_ERROR;
  74
  75         idx =  mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
  76         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
  77         if (rd->json_output) {
  78                 jsonw_uint_field(rd->jw, "ifindex", idx);
  79                 jsonw_string_field(rd->jw, "ifname", name);
  80         } else {
  81                 pr_out("%u: %s: ", idx, name);
  82         }
  83
  84         res_print_summary(rd, tb);
  85
  86         if (!rd->json_output)
  87                 pr_out("\n");
  88         return MNL_CB_OK;
  89 }
  90
  91 int _res_send_idx_msg(struct rd *rd, uint32_t command, mnl_cb_t callback,
  92                       uint32_t idx, uint32_t id)
  93 {
  94         uint32_t flags = NLM_F_REQUEST | NLM_F_ACK;
  95         uint32_t seq;
  96         int ret;
  97
  98         rd_prepare_msg(rd, command, &seq, flags);
  99         mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
 100         if (rd->port_idx)
 101                 mnl_attr_put_u32(rd->nlh,
 102                                  RDMA_NLDEV_ATTR_PORT_INDEX, rd->port_idx);
 103
 104         mnl_attr_put_u32(rd->nlh, id, idx);
 105
 106         ret = rd_send_msg(rd);
 107         if (ret)
 108                 return ret;
 109
 110         if (rd->json_output)
 111                 jsonw_start_object(rd->jw);
 112         ret = rd_recv_msg(rd, callback, rd, seq);
 113         if (rd->json_output)
 114                 jsonw_end_object(rd->jw);
 115         return ret;
 116 }
 117
 118 int _res_send_msg(struct rd *rd, uint32_t command, mnl_cb_t callback)
 119 {
 120         uint32_t flags = NLM_F_REQUEST | NLM_F_ACK;
 121         uint32_t seq;
 122         int ret;
 123
 124         if (command != RDMA_NLDEV_CMD_RES_GET)
 125                 flags |= NLM_F_DUMP;
 126
 127         rd_prepare_msg(rd, command, &seq, flags);
 128         mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
 129         if (rd->port_idx)
 130                 mnl_attr_put_u32(rd->nlh,
 131                                  RDMA_NLDEV_ATTR_PORT_INDEX, rd->port_idx);
 132
 133         ret = rd_send_msg(rd);
 134         if (ret)
 135                 return ret;
 136
 137         if (rd->json_output)
 138                 jsonw_start_object(rd->jw);
 139         ret = rd_recv_msg(rd, callback, rd, seq);
 140         if (rd->json_output)
 141                 jsonw_end_object(rd->jw);
 142         return ret;
 143 }
 144
 145 const char *qp_types_to_str(uint8_t idx)
 146 {
 147         static const char * const qp_types_str[] = { "SMI", "GSI", "RC",
 148                                                      "UC", "UD", "RAW_IPV6",
 149                                                      "RAW_ETHERTYPE",
 150                                                      "UNKNOWN", "RAW_PACKET",
 151                                                      "XRC_INI", "XRC_TGT",
 152                                                      [0xFF] = "DRIVER",
 153         };
 154
 155         if (idx < ARRAY_SIZE(qp_types_str) && qp_types_str[idx])
 156                 return qp_types_str[idx];
 157         return "UNKNOWN";
 158 }
 159
 160 void print_comm(struct rd *rd, const char *str, struct nlattr **nla_line)
 161 {
 162         char tmp[18];
 163
 164         if (!str)
 165                 return;
 166
 167         if (rd->json_output) {
 168                 /* Don't beatify output in JSON format */
 169                 jsonw_string_field(rd->jw, "comm", str);
 170                 return;
 171         }
 172
 173         if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
 174                 snprintf(tmp, sizeof(tmp), "%s", str);
 175         else
 176                 snprintf(tmp, sizeof(tmp), "[%s]", str);
 177
 178         pr_out("comm %s ", tmp);
 179 }
 180
 181 void print_dev(struct rd *rd, uint32_t idx, const char *name)
 182 {
 183         if (rd->json_output) {
 184                 jsonw_uint_field(rd->jw, "ifindex", idx);
 185                 jsonw_string_field(rd->jw, "ifname", name);
 186         } else {
 187                 pr_out("dev %s ", name);
 188         }
 189 }
 190
 191 void print_link(struct rd *rd, uint32_t idx, const char *name, uint32_t port,
 192                 struct nlattr **nla_line)
 193 {
 194         if (rd->json_output) {
 195                 jsonw_uint_field(rd->jw, "ifindex", idx);
 196
 197                 if (nla_line[RDMA_NLDEV_ATTR_PORT_INDEX])
 198                         jsonw_uint_field(rd->jw, "port", port);
 199
 200                 jsonw_string_field(rd->jw, "ifname", name);
 201         } else {
 202                 if (nla_line[RDMA_NLDEV_ATTR_PORT_INDEX])
 203                         pr_out("link %s/%u ", name, port);
 204                 else
 205                         pr_out("link %s/- ", name);
 206         }
 207 }
 208
 209 char *get_task_name(uint32_t pid)
 210 {
 211         char *comm;
 212         FILE *f;
 213
 214         if (!pid)
 215                 return NULL;
 216
 217         if (asprintf(&comm, "/proc/%d/comm", pid) < 0)
 218                 return NULL;
 219
 220         f = fopen(comm, "r");
 221         free(comm);
 222         if (!f)
 223                 return NULL;
 224
 225         if (fscanf(f, "%ms\n", &comm) != 1)
 226                 comm = NULL;
 227
 228         fclose(f);
 229
 230         return comm;
 231 }
 232
 233 void print_key(struct rd *rd, const char *name, uint64_t val,
 234                struct nlattr *nlattr)
 235 {
 236         if (!nlattr)
 237                 return;
 238
 239         if (rd->json_output)
 240                 jsonw_xint_field(rd->jw, name, val);
 241         else
 242                 pr_out("%s 0x%" PRIx64 " ", name, val);
 243 }
 244
 245 void res_print_uint(struct rd *rd, const char *name, uint64_t val,
 246                     struct nlattr *nlattr)
 247 {
 248         if (!nlattr)
 249                 return;
 250
 251         if (rd->json_output)
 252                 jsonw_u64_field(rd->jw, name, val);
 253         else
 254                 pr_out("%s %" PRIu64 " ", name, val);
 255 }
 256
 257 RES_FUNC(res_no_args,   RDMA_NLDEV_CMD_RES_GET, NULL, true, 0);
 258
 259 static int res_show(struct rd *rd)
 260 {
 261         const struct rd_cmd cmds[] = {
 262                 { NULL,         res_no_args     },
 263                 { "qp",         res_qp          },
 264                 { "cm_id",      res_cm_id       },
 265                 { "cq",         res_cq          },
 266                 { "mr",         res_mr          },
 267                 { "pd",         res_pd          },
 268                 { 0 }
 269         };
 270
 271         /*
 272          * Special case to support "rdma res show DEV_NAME"
 273          */
 274         if (rd_argc(rd) == 1 && dev_map_lookup(rd, false))
 275                 return rd_exec_dev(rd, _res_no_args);
 276
 277         return rd_exec_cmd(rd, cmds, "parameter");
 278 }
 279
 280 int cmd_res(struct rd *rd)
 281 {
 282         const struct rd_cmd cmds[] = {
 283                 { NULL,         res_show },
 284                 { "show",       res_show },
 285                 { "list",       res_show },
 286                 { "help",       res_help },
 287                 { 0 }
 288         };
 289
 290         return rd_exec_cmd(rd, cmds, "resource command");
 291 }