diff mbox series

[net-next,v3,1/1] ibmvnic: add some debugs

Message ID 20201205022235.2414110-1-sukadev@linux.ibm.com
State Superseded
Headers show
Series [net-next,v3,1/1] ibmvnic: add some debugs | expand

Commit Message

Sukadev Bhattiprolu Dec. 5, 2020, 2:22 a.m. UTC
We sometimes run into situations where a soft/hard reset of the adapter
takes a long time or fails to complete. Having additional messages that
include important adapter state info will hopefully help understand what
is happening, reduce the guess work and minimize requests to reproduce
problems with debug patches.

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
---

Changelog[v2]
	[Jakub Kacinski] Change an netdev_err() to netdev_info()? Changed
	to netdev_dbg() instead. Also sending to net rather than net-next.
---
 drivers/net/ethernet/ibm/ibmvnic.c | 25 ++++++++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

Comments

Jakub Kicinski Dec. 8, 2020, 1:13 a.m. UTC | #1
On Fri,  4 Dec 2020 18:22:35 -0800 Sukadev Bhattiprolu wrote:
> We sometimes run into situations where a soft/hard reset of the adapter
> takes a long time or fails to complete. Having additional messages that
> include important adapter state info will hopefully help understand what
> is happening, reduce the guess work and minimize requests to reproduce
> problems with debug patches.
> 
> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>

Applied, thanks!
diff mbox series

Patch

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index da9450f18717..613432b9097b 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -404,6 +404,8 @@  static void replenish_pools(struct ibmvnic_adapter *adapter)
 		if (adapter->rx_pool[i].active)
 			replenish_rx_pool(adapter, &adapter->rx_pool[i]);
 	}
+
+	netdev_dbg(adapter->netdev, "Replenished %d pools\n", i);
 }
 
 static void release_stats_buffers(struct ibmvnic_adapter *adapter)
@@ -909,6 +911,7 @@  static int ibmvnic_login(struct net_device *netdev)
 
 	__ibmvnic_set_mac(netdev, adapter->mac_addr);
 
+	netdev_dbg(netdev, "[S:%d] Login succeeded\n", adapter->state);
 	return 0;
 }
 
@@ -1339,6 +1342,10 @@  static int ibmvnic_close(struct net_device *netdev)
 	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
 	int rc;
 
+	netdev_dbg(netdev, "[S:%d FOP:%d FRR:%d] Closing\n",
+		   adapter->state, adapter->failover_pending,
+		   adapter->force_reset_recovery);
+
 	/* If device failover is pending, just set device state and return.
 	 * Device operation will be handled by reset routine.
 	 */
@@ -1931,8 +1938,10 @@  static int do_reset(struct ibmvnic_adapter *adapter,
 	struct net_device *netdev = adapter->netdev;
 	int i, rc;
 
-	netdev_dbg(adapter->netdev, "Re-setting driver (%d)\n",
-		   rwi->reset_reason);
+	netdev_dbg(adapter->netdev,
+		   "[S:%d FOP:%d] Reset reason %d, reset_state %d\n",
+		   adapter->state, adapter->failover_pending,
+		   rwi->reset_reason, reset_state);
 
 	rtnl_lock();
 	/*
@@ -2091,6 +2100,8 @@  static int do_reset(struct ibmvnic_adapter *adapter,
 		adapter->state = reset_state;
 	rtnl_unlock();
 
+	netdev_dbg(adapter->netdev, "[S:%d FOP:%d] Reset done, rc %d\n",
+		   adapter->state, adapter->failover_pending, rc);
 	return rc;
 }
 
@@ -2160,6 +2171,8 @@  static int do_hard_reset(struct ibmvnic_adapter *adapter,
 	/* restore adapter state if reset failed */
 	if (rc)
 		adapter->state = reset_state;
+	netdev_dbg(adapter->netdev, "[S:%d FOP:%d] Hard reset done, rc %d\n",
+		   adapter->state, adapter->failover_pending, rc);
 	return rc;
 }
 
@@ -2270,6 +2283,11 @@  static void __ibmvnic_reset(struct work_struct *work)
 	}
 
 	clear_bit_unlock(0, &adapter->resetting);
+
+	netdev_dbg(adapter->netdev,
+		   "[S:%d FRR:%d WFR:%d] Done processing resets\n",
+		   adapter->state, adapter->force_reset_recovery,
+		   adapter->wait_for_reset);
 }
 
 static void __ibmvnic_delayed_reset(struct work_struct *work)
@@ -2315,7 +2333,8 @@  static int ibmvnic_reset(struct ibmvnic_adapter *adapter,
 	list_for_each(entry, &adapter->rwi_list) {
 		tmp = list_entry(entry, struct ibmvnic_rwi, list);
 		if (tmp->reset_reason == reason) {
-			netdev_dbg(netdev, "Skipping matching reset\n");
+			netdev_dbg(netdev, "Skipping matching reset, reason=%d\n",
+				   reason);
 			spin_unlock_irqrestore(&adapter->rwi_lock, flags);
 			ret = EBUSY;
 			goto err;