netdev - [PATCH net 3/5] ibmvnic: improve ibmvnic_init and ibmvnic_reset

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Date:   Fri, 14 Aug 2020 02:59:19 -0500
From:   Lijun Pan <ljp@...ux.ibm.com>
To:     netdev@...r.kernel.org
Cc:     linuxppc-dev@...ts.ozlabs.org, Lijun Pan <ljp@...ux.ibm.com>
Subject: [PATCH net 3/5] ibmvnic: improve ibmvnic_init and ibmvnic_reset_init

When H_SEND_CRQ command returns with H_CLOSED, it means the
server's CRQ is not ready yet. Instead of resetting immediately,
we wait for the server to launch passive init.
ibmvnic_init() and ibmvnic_reset_init() should also return the
error code from ibmvnic_send_crq_init() call.

Signed-off-by: Lijun Pan <ljp@...ux.ibm.com>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 50e86e65961e..e366fd42a8c4 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -3568,8 +3568,7 @@ static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter,
 	if (rc) {
 		if (rc == H_CLOSED) {
 			dev_warn(dev, "CRQ Queue closed\n");
-			if (test_bit(0, &adapter->resetting))
-				ibmvnic_reset(adapter, VNIC_RESET_FATAL);
+			/* do not reset, report the fail, wait for passive init from server */
 		}
 
 		dev_warn(dev, "Send error (rc=%d)\n", rc);
@@ -4985,7 +4984,12 @@ static int ibmvnic_reset_init(struct ibmvnic_adapter *adapter)
 
 	reinit_completion(&adapter->init_done);
 	adapter->init_done_rc = 0;
-	ibmvnic_send_crq_init(adapter);
+	rc = ibmvnic_send_crq_init(adapter);
+	if (rc) {
+		dev_err(dev, "%s: Send crq init failed with error %d\n", __func__, rc);
+		return rc;
+	}
+
 	if (!wait_for_completion_timeout(&adapter->init_done, timeout)) {
 		dev_err(dev, "Initialization sequence timed out\n");
 		return -1;
@@ -5039,7 +5043,12 @@ static int ibmvnic_init(struct ibmvnic_adapter *adapter)
 	adapter->from_passive_init = false;
 
 	adapter->init_done_rc = 0;
-	ibmvnic_send_crq_init(adapter);
+	rc = ibmvnic_send_crq_init(adapter);
+	if (rc) {
+		dev_err(dev, "%s: Send crq init failed with error %d\n", __func__, rc);
+		return rc;
+	}
+
 	if (!wait_for_completion_timeout(&adapter->init_done, timeout)) {
 		dev_err(dev, "Initialization sequence timed out\n");
 		return -1;
-- 
2.23.0