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| author |   Johannes Berg <johannes.berg@intel.com> | 2013-11-12 17:30:52 +0100 |
|---|---|---|
| committer |   Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2014-02-03 22:23:34 +0200 |
| commit | a21d7bcbf4c65bb7f79e16287d41040e4c7f5596 (patch) | |
| tree | ac16a9b2af653bb739afe4cfb2388ea7a266fee1 /drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c | |
| parent | iwlwifi: mvm: notify scan completed even if no fw_restart (diff) | |
| download | linux-dev-a21d7bcbf4c65bb7f79e16287d41040e4c7f5596.tar.xz linux-dev-a21d7bcbf4c65bb7f79e16287d41040e4c7f5596.zip | |
iwlwifi: mvm: add low-latency framework
For various traffic use cases, we want to be able to treat multi-
channel scenarios differently. Introduce a low-latency framework
that currently only has a debugfs file to enable low-latency mode,
but can later be extended.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c b/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c index 0e29cd83a06a..19ecade5ec5f 100644 --- a/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c +++ b/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c @@ -460,6 +460,41 @@ static ssize_t iwl_dbgfs_bf_params_read(struct file *file, return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } +static ssize_t iwl_dbgfs_low_latency_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 > 1) + return -EINVAL; + + mutex_lock(&mvm->mutex); + iwl_mvm_update_low_latency(mvm, vif, value); + 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[3]; + + buf[0] = mvmvif->low_latency ? '1' : '0'; + buf[1] = '\n'; + buf[2] = '\0'; + return simple_read_from_buffer(user_buf, count, ppos, buf, sizeof(buf)); +} + #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) \ @@ -473,6 +508,7 @@ static ssize_t iwl_dbgfs_bf_params_read(struct file *file, 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); void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { @@ -505,6 +541,8 @@ 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); if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p && mvmvif == mvm->bf_allowed_vif) |