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iwlwifi: mvm: add debugfs file for misbehaving U-APSD AP

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As this functionality relies on getting a firmware notification
it is difficult to test. Allow accessing the data for it from
debugfs to be able to trigger all kinds of scenarios to test.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Johannes Berg 2015-01-09 14:15:32 +01:00 committed by Emmanuel Grumbach
parent 0294d9eece
commit e39c1b5f5e
1 changed files with 31 additions and 0 deletions
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31
drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c
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@ -517,6 +517,34 @@ static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
return simple_read_from_buffer(user_buf, count, ppos, buf, sizeof(buf));
}
static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ieee80211_vif *vif = file->private_data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
char buf[20];
int len;
len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_bssid);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif *vif,
char *buf, size_t count,
loff_t *ppos)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = mvmvif->mvm;
bool ret;
mutex_lock(&mvm->mutex);
ret = mac_pton(buf, mvmvif->uapsd_misbehaving_bssid);
mutex_unlock(&mvm->mutex);
return ret ? count : -EINVAL;
}
#define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
_MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
@ -531,6 +559,7 @@ MVM_DEBUGFS_READ_FILE_OPS(mac_params);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20);
void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
@ -564,6 +593,8 @@ void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, S_IRUSR);
MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir,
S_IRUSR | S_IWUSR);
MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir,
S_IRUSR | S_IWUSR);
if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
mvmvif == mvm->bf_allowed_vif)