diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index 760b850e8292160f982336195c3df99a403bd99d..a180cde6008a1cd07a11f921d73d34eae7c2aba9 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -382,6 +382,7 @@ struct ixgbe_adapter {
#define IXGBE_FLAG2_SEARCH_FOR_SFP (u32)(1 << 4)
#define IXGBE_FLAG2_SFP_NEEDS_RESET (u32)(1 << 5)
#define IXGBE_FLAG2_RESET_REQUESTED (u32)(1 << 6)
+#define IXGBE_FLAG2_FDIR_REQUIRES_REINIT (u32)(1 << 7)
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
u16 bd_number;
@@ -455,12 +456,12 @@ struct ixgbe_adapter {
bool link_up;
unsigned long link_check_timeout;
- struct work_struct fdir_reinit_task;
struct work_struct check_overtemp_task;
struct work_struct service_task;
struct timer_list service_timer;
u32 fdir_pballoc;
u32 atr_sample_rate;
+ unsigned long fdir_overflow; /* number of times ATR was backed off */
spinlock_t fdir_perfect_lock;
#ifdef IXGBE_FCOE
struct ixgbe_fcoe fcoe;
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index 1fdd075afe799b37b451917af5197212a6ff1e76..cb1555bc85480d8bd934a2680b24f2fb08be6f54 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c
@@ -84,6 +84,7 @@ static struct ixgbe_stats ixgbe_gstrings_stats[] = {
{"hw_rsc_flushed", IXGBE_STAT(rsc_total_flush)},
{"fdir_match", IXGBE_STAT(stats.fdirmatch)},
{"fdir_miss", IXGBE_STAT(stats.fdirmiss)},
+ {"fdir_overflow", IXGBE_STAT(fdir_overflow)},
{"rx_fifo_errors", IXGBE_NETDEV_STAT(rx_fifo_errors)},
{"rx_missed_errors", IXGBE_NETDEV_STAT(rx_missed_errors)},
{"tx_aborted_errors", IXGBE_NETDEV_STAT(tx_aborted_errors)},
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index dbb20e57f660b788f184454843c12e19f5c73586..7edd3603344a1545d4f67926986103fe0742f47a 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -1950,16 +1950,20 @@ static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
case ixgbe_mac_X540:
/* Handle Flow Director Full threshold interrupt */
if (eicr & IXGBE_EICR_FLOW_DIR) {
+ int reinit_count = 0;
int i;
- IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_FLOW_DIR);
- /* Disable transmits before FDIR Re-initialization */
- netif_tx_stop_all_queues(netdev);
for (i = 0; i < adapter->num_tx_queues; i++) {
- struct ixgbe_ring *tx_ring =
- adapter->tx_ring[i];
+ struct ixgbe_ring *ring = adapter->tx_ring[i];
if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE,
- &tx_ring->state))
- schedule_work(&adapter->fdir_reinit_task);
+ &ring->state))
+ reinit_count++;
+ }
+ if (reinit_count) {
+ /* no more flow director interrupts until after init */
+ IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR);
+ eicr &= ~IXGBE_EICR_FLOW_DIR;
+ adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
+ ixgbe_service_event_schedule(adapter);
}
}
break;
@@ -4198,7 +4202,8 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
ixgbe_napi_disable_all(adapter);
- adapter->flags2 &= ~IXGBE_FLAG2_RESET_REQUESTED;
+ adapter->flags2 &= ~(IXGBE_FLAG2_FDIR_REQUIRES_REINIT |
+ IXGBE_FLAG2_RESET_REQUESTED);
adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
del_timer_sync(&adapter->service_timer);
@@ -4212,13 +4217,6 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
free_cpumask_var(q_vector->affinity_mask);
}
- if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
- adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
- cancel_work_sync(&adapter->fdir_reinit_task);
-
- if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
- cancel_work_sync(&adapter->check_overtemp_task);
-
/* disable transmits in the hardware now that interrupts are off */
for (i = 0; i < adapter->num_tx_queues; i++) {
u8 reg_idx = adapter->tx_ring[i]->reg_idx;
@@ -5950,27 +5948,39 @@ void ixgbe_update_stats(struct ixgbe_adapter *adapter)
}
/**
- * ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table
- * @work: pointer to work_struct containing our data
+ * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table
+ * @adapter - pointer to the device adapter structure
**/
-static void ixgbe_fdir_reinit_task(struct work_struct *work)
+static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter)
{
- struct ixgbe_adapter *adapter = container_of(work,
- struct ixgbe_adapter,
- fdir_reinit_task);
struct ixgbe_hw *hw = &adapter->hw;
int i;
+ if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
+ return;
+
+ adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
+
+ /* if interface is down do nothing */
+ if (test_bit(__IXGBE_DOWN, &adapter->state))
+ return;
+
+ /* do nothing if we are not using signature filters */
+ if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE))
+ return;
+
+ adapter->fdir_overflow++;
+
if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
for (i = 0; i < adapter->num_tx_queues; i++)
set_bit(__IXGBE_TX_FDIR_INIT_DONE,
&(adapter->tx_ring[i]->state));
+ /* re-enable flow director interrupts */
+ IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR);
} else {
e_err(probe, "failed to finish FDIR re-initialization, "
"ignored adding FDIR ATR filters\n");
}
- /* Done FDIR Re-initialization, enable transmits */
- netif_tx_start_all_queues(adapter->netdev);
}
/**
@@ -6370,6 +6380,7 @@ static void ixgbe_service_task(struct work_struct *work)
ixgbe_sfp_detection_subtask(adapter);
ixgbe_sfp_link_config_subtask(adapter);
ixgbe_watchdog_subtask(adapter);
+ ixgbe_fdir_reinit_subtask(adapter);
ixgbe_check_hang_subtask(adapter);
ixgbe_service_event_complete(adapter);
@@ -7637,10 +7648,6 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
/* carrier off reporting is important to ethtool even BEFORE open */
netif_carrier_off(netdev);
- if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
- adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
- INIT_WORK(&adapter->fdir_reinit_task, ixgbe_fdir_reinit_task);
-
if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
INIT_WORK(&adapter->check_overtemp_task,
ixgbe_check_overtemp_task);
@@ -7700,12 +7707,8 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev)
set_bit(__IXGBE_DOWN, &adapter->state);
cancel_work_sync(&adapter->service_task);
- if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
- adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
- cancel_work_sync(&adapter->fdir_reinit_task);
if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
cancel_work_sync(&adapter->check_overtemp_task);
-
#ifdef CONFIG_IXGBE_DCA
if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;