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Commit e39c1b5f authored by Johannes Berg's avatar Johannes Berg Committed by Emmanuel Grumbach
Browse files

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



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: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
parent 0294d9ee

drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c

+31 −0
Original line number Diff line number Diff line
@@ -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)