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_parse_cb(const struct nlmsghdr *nlh, void *data)
  58 {
  59         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
  60         struct rd *rd = data;
  61         const char *name;
  62         uint32_t idx;
  63
  64         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
  65         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
  66             !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
  67             !tb[RDMA_NLDEV_ATTR_RES_SUMMARY])
  68                 return MNL_CB_ERROR;
  69
  70         idx =  mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
  71         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
  72         if (rd->json_output) {
  73                 jsonw_uint_field(rd->jw, "ifindex", idx);
  74                 jsonw_string_field(rd->jw, "ifname", name);
  75         } else {
  76                 pr_out("%u: %s: ", idx, name);
  77         }
  78
  79         res_print_summary(rd, tb);
  80
  81         if (!rd->json_output)
  82                 pr_out("\n");
  83         return MNL_CB_OK;
  84 }
  85
  86 int _res_send_msg(struct rd *rd, uint32_t command, mnl_cb_t callback)
  87 {
  88         uint32_t flags = NLM_F_REQUEST | NLM_F_ACK;
  89         uint32_t seq;
  90         int ret;
  91
  92         if (command != RDMA_NLDEV_CMD_RES_GET)
  93                 flags |= NLM_F_DUMP;
  94
  95         rd_prepare_msg(rd, command, &seq, flags);
  96         mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
  97         if (rd->port_idx)
  98                 mnl_attr_put_u32(rd->nlh,
  99                                  RDMA_NLDEV_ATTR_PORT_INDEX, rd->port_idx);
 100
 101         ret = rd_send_msg(rd);
 102         if (ret)
 103                 return ret;
 104
 105         if (rd->json_output)
 106                 jsonw_start_object(rd->jw);
 107         ret = rd_recv_msg(rd, callback, rd, seq);
 108         if (rd->json_output)
 109                 jsonw_end_object(rd->jw);
 110         return ret;
 111 }
 112
 113 const char *qp_types_to_str(uint8_t idx)
 114 {
 115         static const char * const qp_types_str[] = { "SMI", "GSI", "RC",
 116                                                      "UC", "UD", "RAW_IPV6",
 117                                                      "RAW_ETHERTYPE",
 118                                                      "UNKNOWN", "RAW_PACKET",
 119                                                      "XRC_INI", "XRC_TGT" };
 120
 121         if (idx < ARRAY_SIZE(qp_types_str))
 122                 return qp_types_str[idx];
 123         return "UNKNOWN";
 124 }
 125
 126 void print_comm(struct rd *rd, const char *str, struct nlattr **nla_line)
 127 {
 128         char tmp[18];
 129
 130         if (rd->json_output) {
 131                 /* Don't beatify output in JSON format */
 132                 jsonw_string_field(rd->jw, "comm", str);
 133                 return;
 134         }
 135
 136         if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
 137                 snprintf(tmp, sizeof(tmp), "%s", str);
 138         else
 139                 snprintf(tmp, sizeof(tmp), "[%s]", str);
 140
 141         pr_out("comm %s ", tmp);
 142 }
 143
 144 void print_dev(struct rd *rd, uint32_t idx, const char *name)
 145 {
 146         if (rd->json_output) {
 147                 jsonw_uint_field(rd->jw, "ifindex", idx);
 148                 jsonw_string_field(rd->jw, "ifname", name);
 149         } else {
 150                 pr_out("dev %s ", name);
 151         }
 152 }
 153
 154 void print_link(struct rd *rd, uint32_t idx, const char *name, uint32_t port,
 155                 struct nlattr **nla_line)
 156 {
 157         if (rd->json_output) {
 158                 jsonw_uint_field(rd->jw, "ifindex", idx);
 159
 160                 if (nla_line[RDMA_NLDEV_ATTR_PORT_INDEX])
 161                         jsonw_uint_field(rd->jw, "port", port);
 162
 163                 jsonw_string_field(rd->jw, "ifname", name);
 164         } else {
 165                 if (nla_line[RDMA_NLDEV_ATTR_PORT_INDEX])
 166                         pr_out("link %s/%u ", name, port);
 167                 else
 168                         pr_out("link %s/- ", name);
 169         }
 170 }
 171
 172 char *get_task_name(uint32_t pid)
 173 {
 174         char *comm;
 175         FILE *f;
 176
 177         if (asprintf(&comm, "/proc/%d/comm", pid) < 0)
 178                 return NULL;
 179
 180         f = fopen(comm, "r");
 181         free(comm);
 182         if (!f)
 183                 return NULL;
 184
 185         if (fscanf(f, "%ms\n", &comm) != 1)
 186                 comm = NULL;
 187
 188         fclose(f);
 189
 190         return comm;
 191 }
 192
 193 void print_key(struct rd *rd, const char *name, uint64_t val,
 194                struct nlattr *nlattr)
 195 {
 196         if (!nlattr)
 197                 return;
 198
 199         if (rd->json_output)
 200                 jsonw_xint_field(rd->jw, name, val);
 201         else
 202                 pr_out("%s 0x%" PRIx64 " ", name, val);
 203 }
 204
 205 void res_print_uint(struct rd *rd, const char *name, uint64_t val,
 206                     struct nlattr *nlattr)
 207 {
 208         if (!nlattr)
 209                 return;
 210
 211         if (rd->json_output)
 212                 jsonw_u64_field(rd->jw, name, val);
 213         else
 214                 pr_out("%s %" PRIu64 " ", name, val);
 215 }
 216
 217 RES_FUNC(res_no_args,   RDMA_NLDEV_CMD_RES_GET, NULL, true);
 218
 219 static int res_show(struct rd *rd)
 220 {
 221         const struct rd_cmd cmds[] = {
 222                 { NULL,         res_no_args     },
 223                 { "qp",         res_qp          },
 224                 { "cm_id",      res_cm_id       },
 225                 { "cq",         res_cq          },
 226                 { "mr",         res_mr          },
 227                 { "pd",         res_pd          },
 228                 { 0 }
 229         };
 230
 231         /*
 232          * Special case to support "rdma res show DEV_NAME"
 233          */
 234         if (rd_argc(rd) == 1 && dev_map_lookup(rd, false))
 235                 return rd_exec_dev(rd, _res_no_args);
 236
 237         return rd_exec_cmd(rd, cmds, "parameter");
 238 }
 239
 240 int cmd_res(struct rd *rd)
 241 {
 242         const struct rd_cmd cmds[] = {
 243                 { NULL,         res_show },
 244                 { "show",       res_show },
 245                 { "list",       res_show },
 246                 { "help",       res_help },
 247                 { 0 }
 248         };
 249
 250         return rd_exec_cmd(rd, cmds, "resource command");
 251 }