[PATCH 03/11] net/nfp: fix the DMA error caused by app exit abnormally

[Chaoyong He]

From: Shihong Wang <shihong.wang at corigine.com>

When DPDK application exit abnormally, there might have DMA error,
and which will cause the load of firmware failed.

Fix this by force the physical port down to clear the possible DMA error.

Fixes: 896c265ef954 ("net/nfp: use new CPP interface")
Cc: stable at dpdk.org

Signed-off-by: Shihong Wang <shihong.wang at corigine.com>
Signed-off-by: Peng Zhang <peng.zhang at corigine.com>
Reviewed-by: Chaoyong He <chaoyong.he at corigine.com>
---
 drivers/net/nfp/nfp_ethdev.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/nfp/nfp_ethdev.c b/drivers/net/nfp/nfp_ethdev.c
index abaf31e27b..aa2b59af32 100644
--- a/drivers/net/nfp/nfp_ethdev.c
+++ b/drivers/net/nfp/nfp_ethdev.c
@@ -847,6 +847,7 @@ nfp_init_app_fw_nic(struct nfp_pf_dev *pf_dev,
 static int
 nfp_pf_init(struct rte_pci_device *pci_dev)
 {
+	uint32_t i;
 	int ret = 0;
 	uint64_t addr;
 	uint32_t cpp_id;
@@ -905,6 +906,10 @@ nfp_pf_init(struct rte_pci_device *pci_dev)
 		goto hwinfo_cleanup;
 	}
 
+	/* Force the physical port down to clear the possible DMA error */
+	for (i = 0; i < nfp_eth_table->count; i++)
+		nfp_eth_set_configured(cpp, nfp_eth_table->ports[i].index, 0);
+
 	if (nfp_fw_setup(pci_dev, cpp, nfp_eth_table, hwinfo) != 0) {
 		PMD_INIT_LOG(ERR, "Error when uploading firmware");
 		ret = -EIO;
-- 
2.39.1