From: Pavan Nikhilesh <pbhagavatula@marvell.com>
Date: Sat, 4 Apr 2020 15:19:50 +0000 (+0530)
Subject: net/octeontx2: fix device configuration sequence
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=b372fff7d490ba6f127de310bf52b3eb838267c8;p=dpdk.git

net/octeontx2: fix device configuration sequence

When an application invokes rte_eth_dev_configure consecutively without
setting up Rx/Tx queues, it will incorrectly return error while trying
to restore Rx/Tx queue configuration.

Fix configuration sequence by checking if any Rx/Tx queues are
previously configured before trying to restore them.

Fixes: 548b5839a32b ("net/octeontx2: add device configure operation")
Cc: stable@dpdk.org

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
---

diff --git a/drivers/net/octeontx2/otx2_ethdev.c b/drivers/net/octeontx2/otx2_ethdev.c
index 19d32ba502..e10033ec57 100644
--- a/drivers/net/octeontx2/otx2_ethdev.c
+++ b/drivers/net/octeontx2/otx2_ethdev.c
@@ -1139,10 +1139,12 @@ nix_store_queue_cfg_and_then_release(struct rte_eth_dev *eth_dev)
 	txq = (struct otx2_eth_txq **)eth_dev->data->tx_queues;
 	for (i = 0; i < nb_txq; i++) {
 		if (txq[i] == NULL) {
-			otx2_err("txq[%d] is already released", i);
-			goto fail;
+			tx_qconf[i].valid = false;
+			otx2_info("txq[%d] is already released", i);
+			continue;
 		}
 		memcpy(&tx_qconf[i], &txq[i]->qconf, sizeof(*tx_qconf));
+		tx_qconf[i].valid = true;
 		otx2_nix_tx_queue_release(txq[i]);
 		eth_dev->data->tx_queues[i] = NULL;
 	}
@@ -1150,10 +1152,12 @@ nix_store_queue_cfg_and_then_release(struct rte_eth_dev *eth_dev)
 	rxq = (struct otx2_eth_rxq **)eth_dev->data->rx_queues;
 	for (i = 0; i < nb_rxq; i++) {
 		if (rxq[i] == NULL) {
-			otx2_err("rxq[%d] is already released", i);
-			goto fail;
+			rx_qconf[i].valid = false;
+			otx2_info("rxq[%d] is already released", i);
+			continue;
 		}
 		memcpy(&rx_qconf[i], &rxq[i]->qconf, sizeof(*rx_qconf));
+		rx_qconf[i].valid = true;
 		otx2_nix_rx_queue_release(rxq[i]);
 		eth_dev->data->rx_queues[i] = NULL;
 	}
@@ -1208,6 +1212,8 @@ nix_restore_queue_cfg(struct rte_eth_dev *eth_dev)
 	 * queues are already setup in port_configure().
 	 */
 	for (i = 0; i < nb_txq; i++) {
+		if (!tx_qconf[i].valid)
+			continue;
 		rc = otx2_nix_tx_queue_setup(eth_dev, i, tx_qconf[i].nb_desc,
 					     tx_qconf[i].socket_id,
 					     &tx_qconf[i].conf.tx);
@@ -1223,6 +1229,8 @@ nix_restore_queue_cfg(struct rte_eth_dev *eth_dev)
 	free(tx_qconf); tx_qconf = NULL;
 
 	for (i = 0; i < nb_rxq; i++) {
+		if (!rx_qconf[i].valid)
+			continue;
 		rc = otx2_nix_rx_queue_setup(eth_dev, i, rx_qconf[i].nb_desc,
 					     rx_qconf[i].socket_id,
 					     &rx_qconf[i].conf.rx,
diff --git a/drivers/net/octeontx2/otx2_ethdev.h b/drivers/net/octeontx2/otx2_ethdev.h
index 1bfcda2fca..0fbf68b8e0 100644
--- a/drivers/net/octeontx2/otx2_ethdev.h
+++ b/drivers/net/octeontx2/otx2_ethdev.h
@@ -196,6 +196,7 @@ struct otx2_eth_qconf {
 	void *mempool;
 	uint32_t socket_id;
 	uint16_t nb_desc;
+	uint8_t valid;
 };
 
 struct otx2_fc_info {