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_check_is_filtered(rd, "users", users))
  55                 goto out;
  56
  57         if (nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]) {
  58                 poll_ctx =
  59                         mnl_attr_get_u8(nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
  60                 if (rd_check_is_string_filtered(rd, "poll-ctx",
  61                                                 poll_ctx_to_str(poll_ctx)))
  62                         goto out;
  63         }
  64
  65         if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
  66                 pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  67                 comm = get_task_name(pid);
  68         }
  69
  70         if (rd_check_is_filtered(rd, "pid", pid))
  71                 goto out;
  72
  73         if (nla_line[RDMA_NLDEV_ATTR_RES_CQN])
  74                 cqn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CQN]);
  75         if (rd_check_is_filtered(rd, "cqn", cqn))
  76                 goto out;
  77         if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
  78                 ctxn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
  79         if (rd_check_is_filtered(rd, "ctxn", ctxn))
  80                 goto out;
  81
  82         if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
  83                 /* discard const from mnl_attr_get_str */
  84                 comm = (char *)mnl_attr_get_str(
  85                         nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
  86
  87         if (rd->json_output)
  88                 jsonw_start_array(rd->jw);
  89
  90         print_dev(rd, idx, name);
  91         res_print_uint(rd, "cqn", cqn, nla_line[RDMA_NLDEV_ATTR_RES_CQN]);
  92         res_print_uint(rd, "cqe", cqe, nla_line[RDMA_NLDEV_ATTR_RES_CQE]);
  93         res_print_uint(rd, "users", users,
  94                        nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
  95         print_poll_ctx(rd, poll_ctx, nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
  96         res_print_uint(rd, "ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
  97         res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  98         print_comm(rd, comm, nla_line);
  99
 100         print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
 101         newline(rd);
 102
 103 out:    if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
 104                 free(comm);
 105         return MNL_CB_OK;
 106 }
 107
 108 int res_cq_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
 109 {
 110         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 111         struct rd *rd = data;
 112         const char *name;
 113         uint32_t idx;
 114
 115         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
 116         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME])
 117                 return MNL_CB_ERROR;
 118
 119         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 120         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 121
 122         return res_cq_line(rd, name, idx, tb);
 123 }
 124
 125 int res_cq_parse_cb(const struct nlmsghdr *nlh, void *data)
 126 {
 127         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 128         struct nlattr *nla_table, *nla_entry;
 129         struct rd *rd = data;
 130         int ret = MNL_CB_OK;
 131         const char *name;
 132         uint32_t idx;
 133
 134         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
 135         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
 136             !tb[RDMA_NLDEV_ATTR_RES_CQ])
 137                 return MNL_CB_ERROR;
 138
 139         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 140         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 141         nla_table = tb[RDMA_NLDEV_ATTR_RES_CQ];
 142
 143         mnl_attr_for_each_nested(nla_entry, nla_table) {
 144                 struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
 145
 146                 ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
 147                 if (ret != MNL_CB_OK)
 148                         break;
 149
 150                 ret = res_cq_line(rd, name, idx, nla_line);
 151
 152                 if (ret != MNL_CB_OK)
 153                         break;
 154         }
 155         return ret;
 156 }