[dpdk-dev] [PATCH 06/22] net/bnxt: fix failure path in dev init

[Ajit Khaparde <ajit.khaparde@broadcom.com>]

From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>

1. bnxt_dev_init() invokes bnxt_dev_uninit() on failure. So there is
   no need to do individual function cleanups in failure path.
2. rearrange the check for primary process to remove an unwanted goto.
3. fix to invoke bnxt_hwrm_func_buf_unrgtr() in bnxt_dev_uninit() when
   it is needed.

Fixes: b7778e8a1c00a7 ("net/bnxt: refactor to properly allocate resources for PF/VF")
Cc: stable@dpdk.org

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
---
 drivers/net/bnxt/bnxt_ethdev.c | 28 ++++++++++++++--------------
 drivers/net/bnxt/bnxt_hwrm.c   |  3 +++
 2 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 455d8a3bf..814770ada 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -3853,8 +3853,16 @@ bnxt_dev_init(struct rte_eth_dev *eth_dev)
 
 	bp->dev_stopped = 1;
 
+	eth_dev->dev_ops = &bnxt_dev_ops;
+	eth_dev->rx_pkt_burst = &bnxt_recv_pkts;
+	eth_dev->tx_pkt_burst = &bnxt_xmit_pkts;
+
+	/*
+	 * For secondary processes, we don't initialise any further
+	 * as primary has already done this work.
+	 */
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
-		goto skip_init;
+		return 0;
 
 	if (bnxt_vf_pciid(pci_dev->id.device_id))
 		bp->flags |= BNXT_FLAG_VF;
@@ -3871,12 +3879,6 @@ bnxt_dev_init(struct rte_eth_dev *eth_dev)
 			"Board initialization failed rc: %x\n", rc);
 		goto error;
 	}
-skip_init:
-	eth_dev->dev_ops = &bnxt_dev_ops;
-	eth_dev->rx_pkt_burst = &bnxt_recv_pkts;
-	eth_dev->tx_pkt_burst = &bnxt_xmit_pkts;
-	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
-		return 0;
 
 	rc = bnxt_alloc_hwrm_resources(bp);
 	if (rc) {
@@ -4021,21 +4023,16 @@ bnxt_dev_init(struct rte_eth_dev *eth_dev)
 
 	rc = bnxt_alloc_mem(bp);
 	if (rc)
-		goto error_free_int;
+		goto error_free;
 
 	rc = bnxt_request_int(bp);
 	if (rc)
-		goto error_free_int;
+		goto error_free;
 
 	bnxt_init_nic(bp);
 
 	return 0;
 
-error_free_int:
-	bnxt_disable_int(bp);
-	bnxt_hwrm_func_buf_unrgtr(bp);
-	bnxt_free_int(bp);
-	bnxt_free_mem(bp);
 error_free:
 	bnxt_dev_uninit(eth_dev);
 error:
@@ -4055,6 +4052,9 @@ bnxt_dev_uninit(struct rte_eth_dev *eth_dev)
 	bnxt_disable_int(bp);
 	bnxt_free_int(bp);
 	bnxt_free_mem(bp);
+
+	bnxt_hwrm_func_buf_unrgtr(bp);
+
 	if (bp->grp_info != NULL) {
 		rte_free(bp->grp_info);
 		bp->grp_info = NULL;
diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 9c5e5ad77..27c4f2d88 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -3199,6 +3199,9 @@ int bnxt_hwrm_func_buf_unrgtr(struct bnxt *bp)
 	struct hwrm_func_buf_unrgtr_input req = {.req_type = 0 };
 	struct hwrm_func_buf_unrgtr_output *resp = bp->hwrm_cmd_resp_addr;
 
+	if (!(BNXT_PF(bp) && bp->pdev->max_vfs))
+		return 0;
+
 	HWRM_PREP(req, FUNC_BUF_UNRGTR, BNXT_USE_CHIMP_MB);
 
 	rc = bnxt_hwrm_send_message(bp, &req, sizeof(req), BNXT_USE_CHIMP_MB);
-- 
2.20.1 (Apple Git-117)