diff options
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c | 53 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 58 |
2 files changed, 103 insertions, 8 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c index 1c0f84049573..2453ceabf00d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c @@ -543,21 +543,64 @@ static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf, return count; } +static ssize_t +iwl_dbgfs_low_latency_force_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; + u8 value; + int ret; + + ret = kstrtou8(buf, 0, &value); + if (ret) + return ret; + + if (value > NUM_LOW_LATENCY_FORCE) + return -EINVAL; + + mutex_lock(&mvm->mutex); + if (value == LOW_LATENCY_FORCE_UNSET) { + iwl_mvm_update_low_latency(mvm, vif, false, + LOW_LATENCY_DEBUGFS_FORCE); + iwl_mvm_update_low_latency(mvm, vif, false, + LOW_LATENCY_DEBUGFS_FORCE_ENABLE); + } else { + iwl_mvm_update_low_latency(mvm, vif, + value == LOW_LATENCY_FORCE_ON, + LOW_LATENCY_DEBUGFS_FORCE); + iwl_mvm_update_low_latency(mvm, vif, true, + LOW_LATENCY_DEBUGFS_FORCE_ENABLE); + } + mutex_unlock(&mvm->mutex); + return count; +} + static ssize_t iwl_dbgfs_low_latency_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[30] = {}; + char format[] = "traffic=%d\ndbgfs=%d\nvcmd=%d\nvif_type=%d\n" + "dbgfs_force_enable=%d\ndbgfs_force=%d\nactual=%d\n"; + + /* + * all values in format are boolean so the size of format is enough + * for holding the result string + */ + char buf[sizeof(format) + 1] = {}; int len; - len = scnprintf(buf, sizeof(buf) - 1, - "traffic=%d\ndbgfs=%d\nvcmd=%d\nvif_type=%d\n", + len = scnprintf(buf, sizeof(buf) - 1, format, !!(mvmvif->low_latency & LOW_LATENCY_TRAFFIC), !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS), !!(mvmvif->low_latency & LOW_LATENCY_VCMD), - !!(mvmvif->low_latency & LOW_LATENCY_VIF_TYPE)); + !!(mvmvif->low_latency & LOW_LATENCY_VIF_TYPE), + !!(mvmvif->low_latency & + LOW_LATENCY_DEBUGFS_FORCE_ENABLE), + !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS_FORCE), + !!(mvmvif->low_latency_actual)); return simple_read_from_buffer(user_buf, count, ppos, buf, len); } @@ -710,6 +753,7 @@ MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt); 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_WRITE_FILE_OPS(low_latency_force, 10); MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20); MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10); MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32); @@ -745,6 +789,7 @@ void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif) MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400); MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400); MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600); + MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600); MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600); MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600); MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index 59d655436a8f..5c9adf72691f 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -300,17 +300,38 @@ enum iwl_bt_force_ant_mode { }; /** + * struct iwl_mvm_low_latency_force - low latency force mode set by debugfs + * @LOW_LATENCY_FORCE_UNSET: unset force mode + * @LOW_LATENCY_FORCE_ON: for low latency on + * @LOW_LATENCY_FORCE_OFF: for low latency off + * @NUM_LOW_LATENCY_FORCE: max num of modes + */ +enum iwl_mvm_low_latency_force { + LOW_LATENCY_FORCE_UNSET, + LOW_LATENCY_FORCE_ON, + LOW_LATENCY_FORCE_OFF, + NUM_LOW_LATENCY_FORCE +}; + +/** * struct iwl_mvm_low_latency_cause - low latency set causes * @LOW_LATENCY_TRAFFIC: indicates low latency traffic was detected * @LOW_LATENCY_DEBUGFS: low latency mode set from debugfs * @LOW_LATENCY_VCMD: low latency mode set from vendor command * @LOW_LATENCY_VIF_TYPE: low latency mode set because of vif type (ap) +* @LOW_LATENCY_DEBUGFS_FORCE_ENABLE: indicate that force mode is enabled +* the actual set/unset is done with LOW_LATENCY_DEBUGFS_FORCE +* @LOW_LATENCY_DEBUGFS_FORCE: low latency force mode from debugfs +* set this with LOW_LATENCY_DEBUGFS_FORCE_ENABLE flag +* in low_latency. */ enum iwl_mvm_low_latency_cause { LOW_LATENCY_TRAFFIC = BIT(0), LOW_LATENCY_DEBUGFS = BIT(1), LOW_LATENCY_VCMD = BIT(2), LOW_LATENCY_VIF_TYPE = BIT(3), + LOW_LATENCY_DEBUGFS_FORCE_ENABLE = BIT(4), + LOW_LATENCY_DEBUGFS_FORCE = BIT(5), }; /** @@ -361,8 +382,10 @@ struct iwl_probe_resp_data { * @pm_enabled - Indicate if MAC power management is allowed * @monitor_active: indicates that monitor context is configured, and that the * interface should get quota etc. - * @low_latency: indicates low latency is set, see - * enum &iwl_mvm_low_latency_cause for causes. + * @low_latency: bit flags for low latency + * see enum &iwl_mvm_low_latency_cause for causes. + * @low_latency_actual: boolean, indicates low latency is set, + * as a result from low_latency bit flags and takes force into account. * @ps_disabled: indicates that this interface requires PS to be disabled * @queue_params: QoS params for this MAC * @bcast_sta: station used for broadcast packets. Used by the following @@ -394,7 +417,8 @@ struct iwl_mvm_vif { bool ap_ibss_active; bool pm_enabled; bool monitor_active; - u8 low_latency; + u8 low_latency: 6; + u8 low_latency_actual: 1; bool ps_disabled; struct iwl_mvm_vif_bf_data bf_data; @@ -1918,17 +1942,43 @@ static inline bool iwl_mvm_vif_low_latency(struct iwl_mvm_vif *mvmvif) * binding, so this has no real impact. For now, just return * the current desired low-latency state. */ - return mvmvif->low_latency; + return mvmvif->low_latency_actual; } static inline void iwl_mvm_vif_set_low_latency(struct iwl_mvm_vif *mvmvif, bool set, enum iwl_mvm_low_latency_cause cause) { + u8 new_state; + if (set) mvmvif->low_latency |= cause; else mvmvif->low_latency &= ~cause; + + /* + * if LOW_LATENCY_DEBUGFS_FORCE_ENABLE is enabled no changes are + * allowed to actual mode. + */ + if (mvmvif->low_latency & LOW_LATENCY_DEBUGFS_FORCE_ENABLE && + cause != LOW_LATENCY_DEBUGFS_FORCE_ENABLE) + return; + + if (cause == LOW_LATENCY_DEBUGFS_FORCE_ENABLE && set) + /* + * We enter force state + */ + new_state = !!(mvmvif->low_latency & + LOW_LATENCY_DEBUGFS_FORCE); + else + /* + * Check if any other one set low latency + */ + new_state = !!(mvmvif->low_latency & + ~(LOW_LATENCY_DEBUGFS_FORCE_ENABLE | + LOW_LATENCY_DEBUGFS_FORCE)); + + mvmvif->low_latency_actual = new_state; } /* Return a bitmask with all the hw supported queues, except for the |