rdma/res-cmid.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /*
   3  * res-cmid.c   RDMA tool
   4  * Authors:     Leon Romanovsky <leonro@mellanox.com>
   5  */
   6
   7 #include "res.h"
   8 #include <inttypes.h>
   9
  10 static void print_qp_type(struct rd *rd, uint32_t val)
  11 {
  12         if (rd->json_output)
  13                 jsonw_string_field(rd->jw, "qp-type", qp_types_to_str(val));
  14         else
  15                 pr_out("qp-type %s ", qp_types_to_str(val));
  16 }
  17
  18 static const char *cm_id_state_to_str(uint8_t idx)
  19 {
  20         static const char *const cm_id_states_str[] = {
  21                 "IDLE",           "ADDR_QUERY",     "ADDR_RESOLVED",
  22                 "ROUTE_QUERY",    "ROUTE_RESOLVED", "CONNECT",
  23                 "DISCONNECT",     "ADDR_BOUND",     "LISTEN",
  24                 "DEVICE_REMOVAL", "DESTROYING"
  25         };
  26
  27         if (idx < ARRAY_SIZE(cm_id_states_str))
  28                 return cm_id_states_str[idx];
  29         return "UNKNOWN";
  30 }
  31
  32 static const char *cm_id_ps_to_str(uint32_t ps)
  33 {
  34         switch (ps) {
  35         case RDMA_PS_IPOIB:
  36                 return "IPoIB";
  37         case RDMA_PS_IB:
  38                 return "IPoIB";
  39         case RDMA_PS_TCP:
  40                 return "TCP";
  41         case RDMA_PS_UDP:
  42                 return "UDP";
  43         default:
  44                 return "---";
  45         }
  46 }
  47
  48 static void print_cm_id_state(struct rd *rd, uint8_t state)
  49 {
  50         if (rd->json_output) {
  51                 jsonw_string_field(rd->jw, "state", cm_id_state_to_str(state));
  52                 return;
  53         }
  54         pr_out("state %s ", cm_id_state_to_str(state));
  55 }
  56
  57 static void print_ps(struct rd *rd, uint32_t ps)
  58 {
  59         if (rd->json_output) {
  60                 jsonw_string_field(rd->jw, "ps", cm_id_ps_to_str(ps));
  61                 return;
  62         }
  63         pr_out("ps %s ", cm_id_ps_to_str(ps));
  64 }
  65
  66 static void print_ipaddr(struct rd *rd, const char *key, char *addrstr,
  67                          uint16_t port)
  68 {
  69         if (rd->json_output) {
  70                 int name_size = INET6_ADDRSTRLEN + strlen(":65535");
  71                 char json_name[name_size];
  72
  73                 snprintf(json_name, name_size, "%s:%u", addrstr, port);
  74                 jsonw_string_field(rd->jw, key, json_name);
  75                 return;
  76         }
  77         pr_out("%s %s:%u ", key, addrstr, port);
  78 }
  79
  80 static int ss_ntop(struct nlattr *nla_line, char *addr_str, uint16_t *port)
  81 {
  82         struct __kernel_sockaddr_storage *addr;
  83
  84         addr = (struct __kernel_sockaddr_storage *)mnl_attr_get_payload(
  85                 nla_line);
  86         switch (addr->ss_family) {
  87         case AF_INET: {
  88                 struct sockaddr_in *sin = (struct sockaddr_in *)addr;
  89
  90                 if (!inet_ntop(AF_INET, (const void *)&sin->sin_addr, addr_str,
  91                                INET6_ADDRSTRLEN))
  92                         return -EINVAL;
  93                 *port = ntohs(sin->sin_port);
  94                 break;
  95         }
  96         case AF_INET6: {
  97                 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
  98
  99                 if (!inet_ntop(AF_INET6, (const void *)&sin6->sin6_addr,
 100                                addr_str, INET6_ADDRSTRLEN))
 101                         return -EINVAL;
 102                 *port = ntohs(sin6->sin6_port);
 103                 break;
 104         }
 105         default:
 106                 return -EINVAL;
 107         }
 108         return 0;
 109 }
 110
 111 int res_cm_id_parse_cb(const struct nlmsghdr *nlh, void *data)
 112 {
 113         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 114         struct nlattr *nla_table, *nla_entry;
 115         struct rd *rd = data;
 116         const char *name;
 117         int idx;
 118
 119         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
 120         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
 121             !tb[RDMA_NLDEV_ATTR_RES_CM_ID])
 122                 return MNL_CB_ERROR;
 123
 124         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 125         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 126         nla_table = tb[RDMA_NLDEV_ATTR_RES_CM_ID];
 127         mnl_attr_for_each_nested(nla_entry, nla_table) {
 128                 struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
 129                 char src_addr_str[INET6_ADDRSTRLEN];
 130                 char dst_addr_str[INET6_ADDRSTRLEN];
 131                 uint16_t src_port, dst_port;
 132                 uint32_t port = 0, pid = 0;
 133                 uint8_t type = 0, state;
 134                 uint32_t lqpn = 0, ps;
 135                 uint32_t cm_idn = 0;
 136                 char *comm = NULL;
 137                 int err;
 138
 139                 err = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
 140                 if (err != MNL_CB_OK)
 141                         return -EINVAL;
 142
 143                 if (!nla_line[RDMA_NLDEV_ATTR_RES_STATE] ||
 144                     !nla_line[RDMA_NLDEV_ATTR_RES_PS] ||
 145                     (!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
 146                      !nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
 147                         return MNL_CB_ERROR;
 148                 }
 149
 150                 if (nla_line[RDMA_NLDEV_ATTR_PORT_INDEX])
 151                         port = mnl_attr_get_u32(
 152                                 nla_line[RDMA_NLDEV_ATTR_PORT_INDEX]);
 153
 154                 if (port && port != rd->port_idx)
 155                         continue;
 156
 157                 if (nla_line[RDMA_NLDEV_ATTR_RES_LQPN]) {
 158                         lqpn = mnl_attr_get_u32(
 159                                 nla_line[RDMA_NLDEV_ATTR_RES_LQPN]);
 160                         if (rd_check_is_filtered(rd, "lqpn", lqpn))
 161                                 continue;
 162                 }
 163                 if (nla_line[RDMA_NLDEV_ATTR_RES_TYPE]) {
 164                         type = mnl_attr_get_u8(
 165                                 nla_line[RDMA_NLDEV_ATTR_RES_TYPE]);
 166                         if (rd_check_is_string_filtered(rd, "qp-type",
 167                                                         qp_types_to_str(type)))
 168                                 continue;
 169                 }
 170
 171                 ps = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PS]);
 172                 if (rd_check_is_string_filtered(rd, "ps", cm_id_ps_to_str(ps)))
 173                         continue;
 174
 175                 state = mnl_attr_get_u8(nla_line[RDMA_NLDEV_ATTR_RES_STATE]);
 176                 if (rd_check_is_string_filtered(rd, "state",
 177                                                 cm_id_state_to_str(state)))
 178                         continue;
 179
 180                 if (nla_line[RDMA_NLDEV_ATTR_RES_SRC_ADDR]) {
 181                         if (ss_ntop(nla_line[RDMA_NLDEV_ATTR_RES_SRC_ADDR],
 182                                     src_addr_str, &src_port))
 183                                 continue;
 184                         if (rd_check_is_string_filtered(rd, "src-addr",
 185                                                         src_addr_str))
 186                                 continue;
 187                         if (rd_check_is_filtered(rd, "src-port", src_port))
 188                                 continue;
 189                 }
 190
 191                 if (nla_line[RDMA_NLDEV_ATTR_RES_DST_ADDR]) {
 192                         if (ss_ntop(nla_line[RDMA_NLDEV_ATTR_RES_DST_ADDR],
 193                                     dst_addr_str, &dst_port))
 194                                 continue;
 195                         if (rd_check_is_string_filtered(rd, "dst-addr",
 196                                                         dst_addr_str))
 197                                 continue;
 198                         if (rd_check_is_filtered(rd, "dst-port", dst_port))
 199                                 continue;
 200                 }
 201
 202                 if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
 203                         pid = mnl_attr_get_u32(
 204                                 nla_line[RDMA_NLDEV_ATTR_RES_PID]);
 205                         comm = get_task_name(pid);
 206                 }
 207
 208                 if (rd_check_is_filtered(rd, "pid", pid)) {
 209                         free(comm);
 210                         continue;
 211                 }
 212
 213                 if (nla_line[RDMA_NLDEV_ATTR_RES_CM_IDN])
 214                         cm_idn = mnl_attr_get_u32(
 215                                 nla_line[RDMA_NLDEV_ATTR_RES_CM_IDN]);
 216                 if (rd_check_is_filtered(rd, "cm-idn", cm_idn))
 217                         continue;
 218
 219                 if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]) {
 220                         /* discard const from mnl_attr_get_str */
 221                         comm = (char *)mnl_attr_get_str(
 222                                 nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
 223                 }
 224
 225                 if (rd->json_output)
 226                         jsonw_start_array(rd->jw);
 227
 228                 print_link(rd, idx, name, port, nla_line);
 229                 if (nla_line[RDMA_NLDEV_ATTR_RES_LQPN])
 230                         print_lqpn(rd, lqpn);
 231                 if (nla_line[RDMA_NLDEV_ATTR_RES_TYPE])
 232                         print_qp_type(rd, type);
 233                 print_cm_id_state(rd, state);
 234                 print_ps(rd, ps);
 235                 print_pid(rd, pid);
 236                 print_comm(rd, comm, nla_line);
 237                 if (nla_line[RDMA_NLDEV_ATTR_RES_CM_IDN])
 238                         res_print_uint(rd, "cm-idn", cm_idn);
 239
 240                 if (nla_line[RDMA_NLDEV_ATTR_RES_SRC_ADDR])
 241                         print_ipaddr(rd, "src-addr", src_addr_str, src_port);
 242                 if (nla_line[RDMA_NLDEV_ATTR_RES_DST_ADDR])
 243                         print_ipaddr(rd, "dst-addr", dst_addr_str, dst_port);
 244
 245                 if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
 246                         free(comm);
 247
 248                 print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
 249                 newline(rd);
 250         }
 251         return MNL_CB_OK;
 252 }