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 void print_cq_dim_setting(struct rd *rd, struct nlattr *attr)
  34 {
  35         uint8_t dim_setting;
  36
  37         if (!attr)
  38                 return;
  39
  40         dim_setting = mnl_attr_get_u8(attr);
  41         if (dim_setting > 1)
  42                 return;
  43
  44         print_on_off(rd, "adaptive-moderation", dim_setting);
  45 }
  46
  47 static int res_cq_line(struct rd *rd, const char *name, int idx,
  48                        struct nlattr **nla_line)
  49 {
  50         char *comm = NULL;
  51         uint32_t pid = 0;
  52         uint8_t poll_ctx = 0;
  53         uint32_t ctxn = 0;
  54         uint32_t cqn = 0;
  55         uint64_t users;
  56         uint32_t cqe;
  57
  58         if (!nla_line[RDMA_NLDEV_ATTR_RES_CQE] ||
  59             !nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||
  60             (!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
  61              !nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
  62                 return MNL_CB_ERROR;
  63         }
  64
  65         cqe = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CQE]);
  66
  67         users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
  68         if (rd_is_filtered_attr(rd, "users", users,
  69                                 nla_line[RDMA_NLDEV_ATTR_RES_USECNT]))
  70                 goto out;
  71
  72         if (nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX])
  73                 poll_ctx =
  74                         mnl_attr_get_u8(nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
  75         if (rd_is_string_filtered_attr(rd, "poll-ctx",
  76                                        poll_ctx_to_str(poll_ctx),
  77                                        nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]))
  78                 goto out;
  79
  80         if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
  81                 pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
  82                 comm = get_task_name(pid);
  83         }
  84
  85         if (rd_is_filtered_attr(rd, "pid", pid,
  86                                 nla_line[RDMA_NLDEV_ATTR_RES_PID]))
  87                 goto out;
  88
  89         if (nla_line[RDMA_NLDEV_ATTR_RES_CQN])
  90                 cqn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CQN]);
  91         if (rd_is_filtered_attr(rd, "cqn", cqn,
  92                                 nla_line[RDMA_NLDEV_ATTR_RES_CQN]))
  93                 goto out;
  94         if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
  95                 ctxn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
  96         if (rd_is_filtered_attr(rd, "ctxn", ctxn,
  97                                 nla_line[RDMA_NLDEV_ATTR_RES_CTXN]))
  98                 goto out;
  99
 100         if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
 101                 /* discard const from mnl_attr_get_str */
 102                 comm = (char *)mnl_attr_get_str(
 103                         nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
 104
 105         if (rd->json_output)
 106                 jsonw_start_array(rd->jw);
 107
 108         print_dev(rd, idx, name);
 109         res_print_uint(rd, "cqn", cqn, nla_line[RDMA_NLDEV_ATTR_RES_CQN]);
 110         res_print_uint(rd, "cqe", cqe, nla_line[RDMA_NLDEV_ATTR_RES_CQE]);
 111         res_print_uint(rd, "users", users,
 112                        nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
 113         print_poll_ctx(rd, poll_ctx, nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
 114         print_cq_dim_setting(rd, nla_line[RDMA_NLDEV_ATTR_DEV_DIM]);
 115         res_print_uint(rd, "ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
 116         res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
 117         print_comm(rd, comm, nla_line);
 118
 119         print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
 120         newline(rd);
 121
 122 out:    if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
 123                 free(comm);
 124         return MNL_CB_OK;
 125 }
 126
 127 int res_cq_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
 128 {
 129         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 130         struct rd *rd = data;
 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                 return MNL_CB_ERROR;
 137
 138         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 139         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 140
 141         return res_cq_line(rd, name, idx, tb);
 142 }
 143
 144 int res_cq_parse_cb(const struct nlmsghdr *nlh, void *data)
 145 {
 146         struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
 147         struct nlattr *nla_table, *nla_entry;
 148         struct rd *rd = data;
 149         int ret = MNL_CB_OK;
 150         const char *name;
 151         uint32_t idx;
 152
 153         mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
 154         if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
 155             !tb[RDMA_NLDEV_ATTR_RES_CQ])
 156                 return MNL_CB_ERROR;
 157
 158         name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
 159         idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 160         nla_table = tb[RDMA_NLDEV_ATTR_RES_CQ];
 161
 162         mnl_attr_for_each_nested(nla_entry, nla_table) {
 163                 struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
 164
 165                 ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
 166                 if (ret != MNL_CB_OK)
 167                         break;
 168
 169                 ret = res_cq_line(rd, name, idx, nla_line);
 170
 171                 if (ret != MNL_CB_OK)
 172                         break;
 173         }
 174         return ret;
 175 }