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path: root/drivers/net/wireless/iwlwifi/mvm/quota.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/quota.c')
-rw-r--r--drivers/net/wireless/iwlwifi/mvm/quota.c100
1 files changed, 79 insertions, 21 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/quota.c b/drivers/net/wireless/iwlwifi/mvm/quota.c
index ce5db6c4ef7e..35e86e06dffd 100644
--- a/drivers/net/wireless/iwlwifi/mvm/quota.c
+++ b/drivers/net/wireless/iwlwifi/mvm/quota.c
@@ -65,9 +65,14 @@
#include "fw-api.h"
#include "mvm.h"
+#define QUOTA_100 IWL_MVM_MAX_QUOTA
+#define QUOTA_LOWLAT_MIN ((QUOTA_100 * IWL_MVM_LOWLAT_QUOTA_MIN_PERCENT) / 100)
+
struct iwl_mvm_quota_iterator_data {
int n_interfaces[MAX_BINDINGS];
int colors[MAX_BINDINGS];
+ int low_latency[MAX_BINDINGS];
+ int n_low_latency_bindings;
struct ieee80211_vif *new_vif;
};
@@ -107,22 +112,29 @@ static void iwl_mvm_quota_iterator(void *_data, u8 *mac,
switch (vif->type) {
case NL80211_IFTYPE_STATION:
if (vif->bss_conf.assoc)
- data->n_interfaces[id]++;
- break;
+ break;
+ return;
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_ADHOC:
if (mvmvif->ap_ibss_active)
- data->n_interfaces[id]++;
- break;
+ break;
+ return;
case NL80211_IFTYPE_MONITOR:
if (mvmvif->monitor_active)
- data->n_interfaces[id]++;
- break;
+ break;
+ return;
case NL80211_IFTYPE_P2P_DEVICE:
- break;
+ return;
default:
WARN_ON_ONCE(1);
- break;
+ return;
+ }
+
+ data->n_interfaces[id]++;
+
+ if (iwl_mvm_vif_low_latency(mvmvif) && !data->low_latency[id]) {
+ data->n_low_latency_bindings++;
+ data->low_latency[id] = true;
}
}
@@ -162,7 +174,7 @@ static void iwl_mvm_adjust_quota_for_noa(struct iwl_mvm *mvm,
int iwl_mvm_update_quotas(struct iwl_mvm *mvm, struct ieee80211_vif *newvif)
{
struct iwl_time_quota_cmd cmd = {};
- int i, idx, ret, num_active_macs, quota, quota_rem;
+ int i, idx, ret, num_active_macs, quota, quota_rem, n_non_lowlat;
struct iwl_mvm_quota_iterator_data data = {
.n_interfaces = {},
.colors = { -1, -1, -1, -1 },
@@ -197,11 +209,39 @@ int iwl_mvm_update_quotas(struct iwl_mvm *mvm, struct ieee80211_vif *newvif)
num_active_macs += data.n_interfaces[i];
}
- quota = 0;
- quota_rem = 0;
- if (num_active_macs) {
- quota = IWL_MVM_MAX_QUOTA / num_active_macs;
- quota_rem = IWL_MVM_MAX_QUOTA % num_active_macs;
+ n_non_lowlat = num_active_macs;
+
+ if (data.n_low_latency_bindings == 1) {
+ for (i = 0; i < MAX_BINDINGS; i++) {
+ if (data.low_latency[i]) {
+ n_non_lowlat -= data.n_interfaces[i];
+ break;
+ }
+ }
+ }
+
+ if (data.n_low_latency_bindings == 1 && n_non_lowlat) {
+ /*
+ * Reserve quota for the low latency binding in case that
+ * there are several data bindings but only a single
+ * low latency one. Split the rest of the quota equally
+ * between the other data interfaces.
+ */
+ quota = (QUOTA_100 - QUOTA_LOWLAT_MIN) / n_non_lowlat;
+ quota_rem = QUOTA_100 - n_non_lowlat * quota -
+ QUOTA_LOWLAT_MIN;
+ } else if (num_active_macs) {
+ /*
+ * There are 0 or more than 1 low latency bindings, or all the
+ * data interfaces belong to the single low latency binding.
+ * Split the quota equally between the data interfaces.
+ */
+ quota = QUOTA_100 / num_active_macs;
+ quota_rem = QUOTA_100 % num_active_macs;
+ } else {
+ /* values don't really matter - won't be used */
+ quota = 0;
+ quota_rem = 0;
}
for (idx = 0, i = 0; i < MAX_BINDINGS; i++) {
@@ -211,19 +251,37 @@ int iwl_mvm_update_quotas(struct iwl_mvm *mvm, struct ieee80211_vif *newvif)
cmd.quotas[idx].id_and_color =
cpu_to_le32(FW_CMD_ID_AND_COLOR(i, data.colors[i]));
- if (data.n_interfaces[i] <= 0) {
+ if (data.n_interfaces[i] <= 0)
cmd.quotas[idx].quota = cpu_to_le32(0);
- cmd.quotas[idx].max_duration = cpu_to_le32(0);
- } else {
+ else if (data.n_low_latency_bindings == 1 && n_non_lowlat &&
+ data.low_latency[i])
+ /*
+ * There is more than one binding, but only one of the
+ * bindings is in low latency. For this case, allocate
+ * the minimal required quota for the low latency
+ * binding.
+ */
+ cmd.quotas[idx].quota = cpu_to_le32(QUOTA_LOWLAT_MIN);
+ else
cmd.quotas[idx].quota =
cpu_to_le32(quota * data.n_interfaces[i]);
- cmd.quotas[idx].max_duration = cpu_to_le32(0);
- }
+
+ WARN_ONCE(le32_to_cpu(cmd.quotas[idx].quota) > QUOTA_100,
+ "Binding=%d, quota=%u > max=%u\n",
+ idx, le32_to_cpu(cmd.quotas[idx].quota), QUOTA_100);
+
+ cmd.quotas[idx].max_duration = cpu_to_le32(0);
+
idx++;
}
- /* Give the remainder of the session to the first binding */
- le32_add_cpu(&cmd.quotas[0].quota, quota_rem);
+ /* Give the remainder of the session to the first data binding */
+ for (i = 0; i < MAX_BINDINGS; i++) {
+ if (le32_to_cpu(cmd.quotas[i].quota) != 0) {
+ le32_add_cpu(&cmd.quotas[i].quota, quota_rem);
+ break;
+ }
+ }
iwl_mvm_adjust_quota_for_noa(mvm, &cmd);