be2net: replenish when posting to rx-queue is starved in out of mem conditions
This is a patch to replenish the rx-queue when it is in a starved
state (due to out-of-mem conditions)
Signed-off-by: Sathya Perla <sathyap@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index 897a63d..80fe1e0 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -273,26 +273,6 @@
rx_eq->cur_eqd = eqd;
}
-static void be_worker(struct work_struct *work)
-{
- struct be_adapter *adapter =
- container_of(work, struct be_adapter, work.work);
- int status;
-
- /* Check link */
- be_link_status_update(adapter);
-
- /* Get Stats */
- status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
- if (!status)
- netdev_stats_update(adapter);
-
- /* Set EQ delay */
- be_rx_eqd_update(adapter);
-
- schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
-}
-
static struct net_device_stats *be_get_stats(struct net_device *dev)
{
struct be_adapter *adapter = netdev_priv(dev);
@@ -900,8 +880,11 @@
page_info->last_page_user = true;
if (posted) {
- be_rxq_notify(&adapter->ctrl, rxq->id, posted);
atomic_add(posted, &rxq->used);
+ be_rxq_notify(&adapter->ctrl, rxq->id, posted);
+ } else if (atomic_read(&rxq->used) == 0) {
+ /* Let be_worker replenish when memory is available */
+ adapter->rx_post_starved = true;
}
return;
@@ -1305,6 +1288,31 @@
return 1;
}
+static void be_worker(struct work_struct *work)
+{
+ struct be_adapter *adapter =
+ container_of(work, struct be_adapter, work.work);
+ int status;
+
+ /* Check link */
+ be_link_status_update(adapter);
+
+ /* Get Stats */
+ status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
+ if (!status)
+ netdev_stats_update(adapter);
+
+ /* Set EQ delay */
+ be_rx_eqd_update(adapter);
+
+ if (adapter->rx_post_starved) {
+ adapter->rx_post_starved = false;
+ be_post_rx_frags(adapter);
+ }
+
+ schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
+}
+
static void be_msix_enable(struct be_adapter *adapter)
{
int i, status;