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(rd, name, curr);
  51         }
  52         return 0;
  53 }
  54
  55 static int res_no_args_parse_cb(const struct nlmsghdr *nlh, void *data)
  56 {
  57         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
  58         struct rd *rd = data;
  59         const char *name;
  60         uint32_t idx;
  61
  62         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
  63         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
  64             !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
  65             !tb[RDMA_NLDEV_ATTR_RES_SUMMARY])
  66                 return MNL_CB_ERROR;
  67
  68         idx =  mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
  69         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
  70         if (rd->json_output) {
  71                 jsonw_uint_field(rd->jw, "ifindex", idx);
  72                 jsonw_string_field(rd->jw, "ifname", name);
  73         } else {
  74                 pr_out("%u: %s: ", idx, name);
  75         }
  76
  77         res_print_summary(rd, tb);
  78
  79         if (!rd->json_output)
  80                 pr_out("\n");
  81         return MNL_CB_OK;
  82 }
  83
  84 int _res_send_msg(struct rd *rd, uint32_t command, mnl_cb_t callback)
  85 {
  86         uint32_t flags = NLM_F_REQUEST | NLM_F_ACK;
  87         uint32_t seq;
  88         int ret;
  89
  90         if (command != RDMA_NLDEV_CMD_RES_GET)
  91                 flags |= NLM_F_DUMP;
  92
  93         rd_prepare_msg(rd, command, &seq, flags);
  94         mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
  95         if (rd->port_idx)
  96                 mnl_attr_put_u32(rd->nlh,
  97                                  RDMA_NLDEV_ATTR_PORT_INDEX, rd->port_idx);
  98
  99         ret = rd_send_msg(rd);
 100         if (ret)
 101                 return ret;
 102
 103         if (rd->json_output)
 104                 jsonw_start_object(rd->jw);
 105         ret = rd_recv_msg(rd, callback, rd, seq);
 106         if (rd->json_output)
 107                 jsonw_end_object(rd->jw);
 108         return ret;
 109 }
 110
 111 const char *qp_types_to_str(uint8_t idx)
 112 {
 113         static const char * const qp_types_str[] = { "SMI", "GSI", "RC",
 114                                                      "UC", "UD", "RAW_IPV6",
 115                                                      "RAW_ETHERTYPE",
 116                                                      "UNKNOWN", "RAW_PACKET",
 117                                                      "XRC_INI", "XRC_TGT" };
 118
 119         if (idx < ARRAY_SIZE(qp_types_str))
 120                 return qp_types_str[idx];
 121         return "UNKNOWN";
 122 }
 123
 124 void print_comm(struct rd *rd, const char *str, struct nlattr **nla_line)
 125 {
 126         char tmp[18];
 127
 128         if (rd->json_output) {
 129                 /* Don't beatify output in JSON format */
 130                 jsonw_string_field(rd->jw, "comm", str);
 131                 return;
 132         }
 133
 134         if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
 135                 snprintf(tmp, sizeof(tmp), "%s", str);
 136         else
 137                 snprintf(tmp, sizeof(tmp), "[%s]", str);
 138
 139         pr_out("comm %s ", tmp);
 140 }
 141
 142 void print_dev(struct rd *rd, uint32_t idx, const char *name)
 143 {
 144         if (rd->json_output) {
 145                 jsonw_uint_field(rd->jw, "ifindex", idx);
 146                 jsonw_string_field(rd->jw, "ifname", name);
 147         } else {
 148                 pr_out("dev %s ", name);
 149         }
 150 }
 151
 152 void print_link(struct rd *rd, uint32_t idx, const char *name, uint32_t port,
 153                 struct nlattr **nla_line)
 154 {
 155         if (rd->json_output) {
 156                 jsonw_uint_field(rd->jw, "ifindex", idx);
 157
 158                 if (nla_line[RDMA_NLDEV_ATTR_PORT_INDEX])
 159                         jsonw_uint_field(rd->jw, "port", port);
 160
 161                 jsonw_string_field(rd->jw, "ifname", name);
 162         } else {
 163                 if (nla_line[RDMA_NLDEV_ATTR_PORT_INDEX])
 164                         pr_out("link %s/%u ", name, port);
 165                 else
 166                         pr_out("link %s/- ", name);
 167         }
 168 }
 169
 170 char *get_task_name(uint32_t pid)
 171 {
 172         char *comm;
 173         FILE *f;
 174
 175         if (asprintf(&comm, "/proc/%d/comm", pid) < 0)
 176                 return NULL;
 177
 178         f = fopen(comm, "r");
 179         free(comm);
 180         if (!f)
 181                 return NULL;
 182
 183         if (fscanf(f, "%ms\n", &comm) != 1)
 184                 comm = NULL;
 185
 186         fclose(f);
 187
 188         return comm;
 189 }
 190
 191 void print_key(struct rd *rd, const char *name, uint64_t val)
 192 {
 193         if (rd->json_output)
 194                 jsonw_xint_field(rd->jw, name, val);
 195         else
 196                 pr_out("%s 0x%" PRIx64 " ", name, val);
 197 }
 198
 199 void res_print_uint(struct rd *rd, const char *name, uint64_t val)
 200 {
 201         if (rd->json_output)
 202                 jsonw_u64_field(rd->jw, name, val);
 203         else
 204                 pr_out("%s %" PRIu64 " ", name, val);
 205 }
 206
 207 RES_FUNC(res_no_args,   RDMA_NLDEV_CMD_RES_GET, NULL, true);
 208
 209 static int res_show(struct rd *rd)
 210 {
 211         const struct rd_cmd cmds[] = {
 212                 { NULL,         res_no_args     },
 213                 { "qp",         res_qp          },
 214                 { "cm_id",      res_cm_id       },
 215                 { "cq",         res_cq          },
 216                 { "mr",         res_mr          },
 217                 { "pd",         res_pd          },
 218                 { 0 }
 219         };
 220
 221         /*
 222          * Special case to support "rdma res show DEV_NAME"
 223          */
 224         if (rd_argc(rd) == 1 && dev_map_lookup(rd, false))
 225                 return rd_exec_dev(rd, _res_no_args);
 226
 227         return rd_exec_cmd(rd, cmds, "parameter");
 228 }
 229
 230 int cmd_res(struct rd *rd)
 231 {
 232         const struct rd_cmd cmds[] = {
 233                 { NULL,         res_show },
 234                 { "show",       res_show },
 235                 { "list",       res_show },
 236                 { "help",       res_help },
 237                 { 0 }
 238         };
 239
 240         return rd_exec_cmd(rd, cmds, "resource command");
 241 }