rdma/res-cq.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /*
   3  * res-cq.c     RDMA tool
   4  * Authors:     Leon Romanovsky <leonro@mellanox.com>
   5  */
   6
   7 #include "res.h"
   8 #include <inttypes.h>
   9
  10 static const char *poll_ctx_to_str(uint8_t idx)
  11 {
  12         static const char * const cm_id_states_str[] = {
  13                 "DIRECT", "SOFTIRQ", "WORKQUEUE", "UNBOUND_WORKQUEUE"};
  14
  15         if (idx < ARRAY_SIZE(cm_id_states_str))
  16                 return cm_id_states_str[idx];
  17         return "UNKNOWN";
  18 }
  19
  20 static void print_poll_ctx(struct rd *rd, uint8_t poll_ctx, struct nlattr *attr)
  21 {
  22         if (!attr)
  23                 return;
  24
  25         if (rd->json_output) {
  26                 jsonw_string_field(rd->jw, "poll-ctx",
  27                                    poll_ctx_to_str(poll_ctx));
  28                 return;
  29         }
  30         pr_out("poll-ctx %s ", poll_ctx_to_str(poll_ctx));
  31 }
  32
  33 static int res_cq_line(struct rd *rd, const char *name, int idx,
  34                        struct nlattr **nla_line)
  35 {
  36         char *comm = NULL;
  37         uint32_t pid = 0;
  38         uint8_t poll_ctx = 0;
  39         uint32_t ctxn = 0;
  40         uint32_t cqn = 0;
  41         uint64_t users;
  42         uint32_t cqe;
  43
  44         if (!nla_line[RDMA_NLDEV_ATTR_RES_CQE] ||
  45             !nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||
  46             (!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
  47              !nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
  48                 return MNL_CB_ERROR;
  49         }
  50
  51         cqe = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CQE]);
  52
  53         users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
  54         if (rd_is_filtered_attr(rd, "users", users,
  55                                 nla_line[RDMA_NLDEV_ATTR_RES_USECNT]))
  56                 goto out;
  57
  58         if (nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX])
  59                 poll_ctx =
  60                         mnl_attr_get_u8(nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
  61         if (rd_is_string_filtered_attr(rd, "poll-ctx",
  62                                        poll_ctx_to_str(poll_ctx),
  63                                        nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]))
  64                 goto out;
  65
  66         if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
  67                 pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  68                 comm = get_task_name(pid);
  69         }
  70
  71         if (rd_is_filtered_attr(rd, "pid", pid,
  72                                 nla_line[RDMA_NLDEV_ATTR_RES_PID]))
  73                 goto out;
  74
  75         if (nla_line[RDMA_NLDEV_ATTR_RES_CQN])
  76                 cqn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CQN]);
  77         if (rd_is_filtered_attr(rd, "cqn", cqn,
  78                                 nla_line[RDMA_NLDEV_ATTR_RES_CQN]))
  79                 goto out;
  80         if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
  81                 ctxn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
  82         if (rd_is_filtered_attr(rd, "ctxn", ctxn,
  83                                 nla_line[RDMA_NLDEV_ATTR_RES_CTXN]))
  84                 goto out;
  85
  86         if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
  87                 /* discard const from mnl_attr_get_str */
  88                 comm = (char *)mnl_attr_get_str(
  89                         nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
  90
  91         if (rd->json_output)
  92                 jsonw_start_array(rd->jw);
  93
  94         print_dev(rd, idx, name);
  95         res_print_uint(rd, "cqn", cqn, nla_line[RDMA_NLDEV_ATTR_RES_CQN]);
  96         res_print_uint(rd, "cqe", cqe, nla_line[RDMA_NLDEV_ATTR_RES_CQE]);
  97         res_print_uint(rd, "users", users,
  98                        nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
  99         print_poll_ctx(rd, poll_ctx, nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
 100         res_print_uint(rd, "ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
 101         res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
 102         print_comm(rd, comm, nla_line);
 103
 104         print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
 105         newline(rd);
 106
 107 out:    if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
 108                 free(comm);
 109         return MNL_CB_OK;
 110 }
 111
 112 int res_cq_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
 113 {
 114         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 115         struct rd *rd = data;
 116         const char *name;
 117         uint32_t 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                 return MNL_CB_ERROR;
 122
 123         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 124         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 125
 126         return res_cq_line(rd, name, idx, tb);
 127 }
 128
 129 int res_cq_parse_cb(const struct nlmsghdr *nlh, void *data)
 130 {
 131         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 132         struct nlattr *nla_table, *nla_entry;
 133         struct rd *rd = data;
 134         int ret = MNL_CB_OK;
 135         const char *name;
 136         uint32_t idx;
 137
 138         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
 139         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
 140             !tb[RDMA_NLDEV_ATTR_RES_CQ])
 141                 return MNL_CB_ERROR;
 142
 143         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 144         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 145         nla_table = tb[RDMA_NLDEV_ATTR_RES_CQ];
 146
 147         mnl_attr_for_each_nested(nla_entry, nla_table) {
 148                 struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
 149
 150                 ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
 151                 if (ret != MNL_CB_OK)
 152                         break;
 153
 154                 ret = res_cq_line(rd, name, idx, nla_line);
 155
 156                 if (ret != MNL_CB_OK)
 157                         break;
 158         }
 159         return ret;
 160 }