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From: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
To: netdev@vger.kernel.org
Cc: Dany Madden <drt@linux.ibm.com>, Lijun Pan <ljp@linux.ibm.com>,
	Rick Lindsley <ricklind@linux.ibm.com>,
	sukadev@linux.ibm.com
Subject: [PATCH net-next v2 2/7] ibmvnic: update reset function prototypes
Date: Tue, 12 Jan 2021 10:14:36 -0800	[thread overview]
Message-ID: <20210112181441.206545-3-sukadev@linux.ibm.com> (raw)
In-Reply-To: <20210112181441.206545-1-sukadev@linux.ibm.com>

The reset functions need just the 'reset reason' parameter and not
the ibmvnic_rwi list element. Update the functions so we can simplify
the handling of the ->rwi_list in a follow-on patch.

Fixes: 2770a7984db5 ("ibmvnic: Introduce hard reset recovery")
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 39 ++++++++++++++++--------------
 1 file changed, 21 insertions(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index d548779561fd..cd8108dbddec 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -1929,17 +1929,17 @@ static int ibmvnic_set_mac(struct net_device *netdev, void *p)
  * events, or non-zero if we hit a fatal error and must halt.
  */
 static int do_change_param_reset(struct ibmvnic_adapter *adapter,
-				 struct ibmvnic_rwi *rwi,
+				 enum ibmvnic_reset_reason reason,
 				 u32 reset_state)
 {
 	struct net_device *netdev = adapter->netdev;
 	int i, rc;
 
 	netdev_dbg(adapter->netdev, "Change param resetting driver (%d)\n",
-		   rwi->reset_reason);
+		   reason);
 
 	netif_carrier_off(netdev);
-	adapter->reset_reason = rwi->reset_reason;
+	adapter->reset_reason = reason;
 
 	ibmvnic_cleanup(netdev);
 
@@ -2015,7 +2015,7 @@ static int do_change_param_reset(struct ibmvnic_adapter *adapter,
  * non-zero if we hit a fatal error and must halt.
  */
 static int do_reset(struct ibmvnic_adapter *adapter,
-		    struct ibmvnic_rwi *rwi, u32 reset_state)
+		    enum ibmvnic_reset_reason reason, u32 reset_state)
 {
 	u64 old_num_rx_queues, old_num_tx_queues;
 	u64 old_num_rx_slots, old_num_tx_slots;
@@ -2025,7 +2025,7 @@ static int do_reset(struct ibmvnic_adapter *adapter,
 	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);
+		   reason, reset_state);
 
 	rtnl_lock();
 	/*
@@ -2033,11 +2033,11 @@ static int do_reset(struct ibmvnic_adapter *adapter,
 	 * This will ensure ibmvnic_open() has either completed or will
 	 * block until failover is complete.
 	 */
-	if (rwi->reset_reason == VNIC_RESET_FAILOVER)
+	if (reason == VNIC_RESET_FAILOVER)
 		adapter->failover_pending = false;
 
 	netif_carrier_off(netdev);
-	adapter->reset_reason = rwi->reset_reason;
+	adapter->reset_reason = reason;
 
 	old_num_rx_queues = adapter->req_rx_queues;
 	old_num_tx_queues = adapter->req_tx_queues;
@@ -2188,16 +2188,16 @@ static int do_reset(struct ibmvnic_adapter *adapter,
 }
 
 static int do_hard_reset(struct ibmvnic_adapter *adapter,
-			 struct ibmvnic_rwi *rwi, u32 reset_state)
+			 enum ibmvnic_reset_reason reason, u32 reset_state)
 {
 	struct net_device *netdev = adapter->netdev;
 	int rc;
 
 	netdev_dbg(adapter->netdev, "Hard resetting driver (%d)\n",
-		   rwi->reset_reason);
+		   reason);
 
 	netif_carrier_off(netdev);
-	adapter->reset_reason = rwi->reset_reason;
+	adapter->reset_reason = reason;
 
 	ibmvnic_cleanup(netdev);
 	release_resources(adapter);
@@ -2278,6 +2278,7 @@ static struct ibmvnic_rwi *get_next_rwi(struct ibmvnic_adapter *adapter)
 
 static void __ibmvnic_reset(struct work_struct *work)
 {
+	enum ibmvnic_reset_reason reason;
 	struct ibmvnic_rwi *rwi;
 	struct ibmvnic_adapter *adapter;
 	bool saved_state = false;
@@ -2294,6 +2295,7 @@ static void __ibmvnic_reset(struct work_struct *work)
 	}
 
 	rwi = get_next_rwi(adapter);
+	reason = rwi->reset_reason;
 	while (rwi) {
 		spin_lock_irqsave(&adapter->state_lock, flags);
 
@@ -2311,9 +2313,9 @@ static void __ibmvnic_reset(struct work_struct *work)
 		}
 		spin_unlock_irqrestore(&adapter->state_lock, flags);
 
-		if (rwi->reset_reason == VNIC_RESET_CHANGE_PARAM) {
+		if (reason == VNIC_RESET_CHANGE_PARAM) {
 			/* CHANGE_PARAM requestor holds rtnl_lock */
-			rc = do_change_param_reset(adapter, rwi, reset_state);
+			rc = do_change_param_reset(adapter, reason, reset_state);
 		} else if (adapter->force_reset_recovery) {
 			/*
 			 * Since we are doing a hard reset now, clear the
@@ -2326,11 +2328,11 @@ static void __ibmvnic_reset(struct work_struct *work)
 			if (adapter->wait_for_reset) {
 				/* Previous was CHANGE_PARAM; caller locked */
 				adapter->force_reset_recovery = false;
-				rc = do_hard_reset(adapter, rwi, reset_state);
+				rc = do_hard_reset(adapter, reason, reset_state);
 			} else {
 				rtnl_lock();
 				adapter->force_reset_recovery = false;
-				rc = do_hard_reset(adapter, rwi, reset_state);
+				rc = do_hard_reset(adapter, reason, reset_state);
 				rtnl_unlock();
 			}
 			if (rc) {
@@ -2341,9 +2343,9 @@ static void __ibmvnic_reset(struct work_struct *work)
 				set_current_state(TASK_UNINTERRUPTIBLE);
 				schedule_timeout(60 * HZ);
 			}
-		} else if (!(rwi->reset_reason == VNIC_RESET_FATAL &&
+		} else if (!(reason == VNIC_RESET_FATAL &&
 				adapter->from_passive_init)) {
-			rc = do_reset(adapter, rwi, reset_state);
+			rc = do_reset(adapter, reason, reset_state);
 		}
 		kfree(rwi);
 		adapter->last_reset_time = jiffies;
@@ -2352,9 +2354,10 @@ static void __ibmvnic_reset(struct work_struct *work)
 			netdev_dbg(adapter->netdev, "Reset failed, rc=%d\n", rc);
 
 		rwi = get_next_rwi(adapter);
+		reason = rwi->reset_reason;
 
-		if (rwi && (rwi->reset_reason == VNIC_RESET_FAILOVER ||
-			    rwi->reset_reason == VNIC_RESET_MOBILITY))
+		if (reason && (reason == VNIC_RESET_FAILOVER ||
+			       reason == VNIC_RESET_MOBILITY))
 			adapter->force_reset_recovery = true;
 	}
 
-- 
2.26.2


  parent reply	other threads:[~2021-01-12 18:15 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-12 18:14 [PATCH net-next v2 0/7] ibmvnic: Use more consistent locking Sukadev Bhattiprolu
2021-01-12 18:14 ` [PATCH net-next v2 1/7] ibmvnic: restore state in change-param reset Sukadev Bhattiprolu
2021-01-12 18:35   ` Dany Madden
2021-01-12 18:14 ` Sukadev Bhattiprolu [this message]
2021-01-12 18:14 ` [PATCH net-next v2 3/7] ibmvnic: avoid allocating rwi entries Sukadev Bhattiprolu
2021-01-12 19:48   ` Saeed Mahameed
2021-01-13  1:15     ` Sukadev Bhattiprolu
2021-01-12 18:14 ` [PATCH net-next v2 4/7] ibmvnic: switch order of checks in ibmvnic_reset Sukadev Bhattiprolu
2021-01-12 18:14 ` [PATCH net-next v2 5/7] ibmvnic: serialize access to work queue Sukadev Bhattiprolu
2021-01-12 19:56   ` Saeed Mahameed
2021-01-13  0:40     ` Sukadev Bhattiprolu
2021-01-13  1:56       ` Jakub Kicinski
2021-01-12 18:14 ` [PATCH net-next v2 6/7] ibmvnic: check adapter->state under state_lock Sukadev Bhattiprolu
2021-01-12 18:14 ` [PATCH net-next v2 7/7] ibmvnic: add comments about state_lock Sukadev Bhattiprolu
2021-01-12 20:00 ` [PATCH net-next v2 0/7] ibmvnic: Use more consistent locking Saeed Mahameed
2021-01-13  2:00 ` Jakub Kicinski
2021-01-13  4:42   ` Sukadev Bhattiprolu
2021-01-13 18:57     ` Jakub Kicinski
2021-01-13 19:55       ` Sukadev Bhattiprolu
2021-01-14  2:35   ` Sukadev Bhattiprolu

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