drivers/net/wireless/ath/ath10k/debugfs_sta.c

   1 /*
   2  * Copyright (c) 2014 Qualcomm Atheros, Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "core.h"
  18 #include "wmi-ops.h"
  19 #include "debug.h"
  20
  21 static ssize_t ath10k_dbg_sta_read_aggr_mode(struct file *file,
  22                                              char __user *user_buf,
  23                                              size_t count, loff_t *ppos)
  24 {
  25         struct ieee80211_sta *sta = file->private_data;
  26         struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
  27         struct ath10k *ar = arsta->arvif->ar;
  28         char buf[32];
  29         int len = 0;
  30
  31         mutex_lock(&ar->conf_mutex);
  32         len = scnprintf(buf, sizeof(buf) - len, "aggregation mode: %s\n",
  33                         (arsta->aggr_mode == ATH10K_DBG_AGGR_MODE_AUTO) ?
  34                         "auto" : "manual");
  35         mutex_unlock(&ar->conf_mutex);
  36
  37         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
  38 }
  39
  40 static ssize_t ath10k_dbg_sta_write_aggr_mode(struct file *file,
  41                                               const char __user *user_buf,
  42                                               size_t count, loff_t *ppos)
  43 {
  44         struct ieee80211_sta *sta = file->private_data;
  45         struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
  46         struct ath10k *ar = arsta->arvif->ar;
  47         u32 aggr_mode;
  48         int ret;
  49
  50         if (kstrtouint_from_user(user_buf, count, 0, &aggr_mode))
  51                 return -EINVAL;
  52
  53         if (aggr_mode >= ATH10K_DBG_AGGR_MODE_MAX)
  54                 return -EINVAL;
  55
  56         mutex_lock(&ar->conf_mutex);
  57         if ((ar->state != ATH10K_STATE_ON) ||
  58             (aggr_mode == arsta->aggr_mode)) {
  59                 ret = count;
  60                 goto out;
  61         }
  62
  63         ret = ath10k_wmi_addba_clear_resp(ar, arsta->arvif->vdev_id, sta->addr);
  64         if (ret) {
  65                 ath10k_warn(ar, "failed to clear addba session ret: %d\n", ret);
  66                 goto out;
  67         }
  68
  69         arsta->aggr_mode = aggr_mode;
  70 out:
  71         mutex_unlock(&ar->conf_mutex);
  72         return ret;
  73 }
  74
  75 static const struct file_operations fops_aggr_mode = {
  76         .read = ath10k_dbg_sta_read_aggr_mode,
  77         .write = ath10k_dbg_sta_write_aggr_mode,
  78         .open = simple_open,
  79         .owner = THIS_MODULE,
  80         .llseek = default_llseek,
  81 };
  82
  83 static ssize_t ath10k_dbg_sta_write_addba(struct file *file,
  84                                           const char __user *user_buf,
  85                                           size_t count, loff_t *ppos)
  86 {
  87         struct ieee80211_sta *sta = file->private_data;
  88         struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
  89         struct ath10k *ar = arsta->arvif->ar;
  90         u32 tid, buf_size;
  91         int ret;
  92         char buf[64];
  93
  94         simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
  95
  96         /* make sure that buf is null terminated */
  97         buf[sizeof(buf) - 1] = '\0';
  98
  99         ret = sscanf(buf, "%u %u", &tid, &buf_size);
 100         if (ret != 2)
 101                 return -EINVAL;
 102
 103         /* Valid TID values are 0 through 15 */
 104         if (tid > HTT_DATA_TX_EXT_TID_MGMT - 2)
 105                 return -EINVAL;
 106
 107         mutex_lock(&ar->conf_mutex);
 108         if ((ar->state != ATH10K_STATE_ON) ||
 109             (arsta->aggr_mode != ATH10K_DBG_AGGR_MODE_MANUAL)) {
 110                 ret = count;
 111                 goto out;
 112         }
 113
 114         ret = ath10k_wmi_addba_send(ar, arsta->arvif->vdev_id, sta->addr,
 115                                     tid, buf_size);
 116         if (ret) {
 117                 ath10k_warn(ar, "failed to send addba request: vdev_id %u peer %pM tid %u buf_size %u\n",
 118                             arsta->arvif->vdev_id, sta->addr, tid, buf_size);
 119         }
 120
 121         ret = count;
 122 out:
 123         mutex_unlock(&ar->conf_mutex);
 124         return ret;
 125 }
 126
 127 static const struct file_operations fops_addba = {
 128         .write = ath10k_dbg_sta_write_addba,
 129         .open = simple_open,
 130         .owner = THIS_MODULE,
 131         .llseek = default_llseek,
 132 };
 133
 134 static ssize_t ath10k_dbg_sta_write_addba_resp(struct file *file,
 135                                                const char __user *user_buf,
 136                                                size_t count, loff_t *ppos)
 137 {
 138         struct ieee80211_sta *sta = file->private_data;
 139         struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
 140         struct ath10k *ar = arsta->arvif->ar;
 141         u32 tid, status;
 142         int ret;
 143         char buf[64];
 144
 145         simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
 146
 147         /* make sure that buf is null terminated */
 148         buf[sizeof(buf) - 1] = '\0';
 149
 150         ret = sscanf(buf, "%u %u", &tid, &status);
 151         if (ret != 2)
 152                 return -EINVAL;
 153
 154         /* Valid TID values are 0 through 15 */
 155         if (tid > HTT_DATA_TX_EXT_TID_MGMT - 2)
 156                 return -EINVAL;
 157
 158         mutex_lock(&ar->conf_mutex);
 159         if ((ar->state != ATH10K_STATE_ON) ||
 160             (arsta->aggr_mode != ATH10K_DBG_AGGR_MODE_MANUAL)) {
 161                 ret = count;
 162                 goto out;
 163         }
 164
 165         ret = ath10k_wmi_addba_set_resp(ar, arsta->arvif->vdev_id, sta->addr,
 166                                         tid, status);
 167         if (ret) {
 168                 ath10k_warn(ar, "failed to send addba response: vdev_id %u peer %pM tid %u status%u\n",
 169                             arsta->arvif->vdev_id, sta->addr, tid, status);
 170         }
 171         ret = count;
 172 out:
 173         mutex_unlock(&ar->conf_mutex);
 174         return ret;
 175 }
 176
 177 static const struct file_operations fops_addba_resp = {
 178         .write = ath10k_dbg_sta_write_addba_resp,
 179         .open = simple_open,
 180         .owner = THIS_MODULE,
 181         .llseek = default_llseek,
 182 };
 183
 184 static ssize_t ath10k_dbg_sta_write_delba(struct file *file,
 185                                           const char __user *user_buf,
 186                                           size_t count, loff_t *ppos)
 187 {
 188         struct ieee80211_sta *sta = file->private_data;
 189         struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
 190         struct ath10k *ar = arsta->arvif->ar;
 191         u32 tid, initiator, reason;
 192         int ret;
 193         char buf[64];
 194
 195         simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
 196
 197         /* make sure that buf is null terminated */
 198         buf[sizeof(buf) - 1] = '\0';
 199
 200         ret = sscanf(buf, "%u %u %u", &tid, &initiator, &reason);
 201         if (ret != 3)
 202                 return -EINVAL;
 203
 204         /* Valid TID values are 0 through 15 */
 205         if (tid > HTT_DATA_TX_EXT_TID_MGMT - 2)
 206                 return -EINVAL;
 207
 208         mutex_lock(&ar->conf_mutex);
 209         if ((ar->state != ATH10K_STATE_ON) ||
 210             (arsta->aggr_mode != ATH10K_DBG_AGGR_MODE_MANUAL)) {
 211                 ret = count;
 212                 goto out;
 213         }
 214
 215         ret = ath10k_wmi_delba_send(ar, arsta->arvif->vdev_id, sta->addr,
 216                                     tid, initiator, reason);
 217         if (ret) {
 218                 ath10k_warn(ar, "failed to send delba: vdev_id %u peer %pM tid %u initiator %u reason %u\n",
 219                             arsta->arvif->vdev_id, sta->addr, tid, initiator,
 220                             reason);
 221         }
 222         ret = count;
 223 out:
 224         mutex_unlock(&ar->conf_mutex);
 225         return ret;
 226 }
 227
 228 static const struct file_operations fops_delba = {
 229         .write = ath10k_dbg_sta_write_delba,
 230         .open = simple_open,
 231         .owner = THIS_MODULE,
 232         .llseek = default_llseek,
 233 };
 234
 235 void ath10k_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 236                             struct ieee80211_sta *sta, struct dentry *dir)
 237 {
 238         debugfs_create_file("aggr_mode", S_IRUGO | S_IWUSR, dir, sta,
 239                             &fops_aggr_mode);
 240         debugfs_create_file("addba", S_IWUSR, dir, sta, &fops_addba);
 241         debugfs_create_file("addba_resp", S_IWUSR, dir, sta, &fops_addba_resp);
 242         debugfs_create_file("delba", S_IWUSR, dir, sta, &fops_delba);
 243 }