[PATCH 1/6] net/nfp: fix check logic for device arguments

[Chaoyong He <chaoyong.he@corigine.com>]

From: Long Wu <long.wu@corigine.com>

There is no check for NFP device argument now, so the users may
not be aware of the wrong device argument and feels confused
with the result in some case.

Add the check logic to fix this problem.

Fixes: b301fd736003 ("net/nfp: add force reload firmware option")
Cc: peng.zhang@corigine.com
Cc: stable@dpdk.org

Signed-off-by: Long Wu <long.wu@corigine.com>
Reviewed-by: Peng Zhang <peng.zhang@corigine.com>
Reviewed-by: Chaoyong He <chaoyong.he@corigine.com>
---
 drivers/net/nfp/nfp_ethdev.c | 59 +++++++++++++++++++++++++-----------
 1 file changed, 41 insertions(+), 18 deletions(-)

diff --git a/drivers/net/nfp/nfp_ethdev.c b/drivers/net/nfp/nfp_ethdev.c
index 71c4f35c56..ddbbd736db 100644
--- a/drivers/net/nfp/nfp_ethdev.c
+++ b/drivers/net/nfp/nfp_ethdev.c
@@ -67,46 +67,64 @@ nfp_devarg_handle_int(const char *key,
 	return 0;
 }
 
-static void
-nfp_devarg_parse_force_reload_fw(struct rte_kvargs *kvlist,
-		bool *force_reload_fw)
+static int
+nfp_devarg_parse_bool_para(struct rte_kvargs *kvlist,
+		const char *key_match,
+		bool *value_ret)
 {
 	int ret;
+	uint32_t count;
 	uint64_t value;
 
+	count = rte_kvargs_count(kvlist, key_match);
+	if (count == 0)
+		return 0;
 
-	if (rte_kvargs_count(kvlist, NFP_PF_FORCE_RELOAD_FW) != 1)
-		return;
+	if (count > 1) {
+		PMD_DRV_LOG(ERR, "Too much bool arguments: %s", key_match);
+		return -EINVAL;
+	}
 
-	ret = rte_kvargs_process(kvlist, NFP_PF_FORCE_RELOAD_FW, &nfp_devarg_handle_int, &value);
+	ret = rte_kvargs_process(kvlist, key_match, &nfp_devarg_handle_int, &value);
 	if (ret != 0)
-		return;
+		return -EINVAL;
 
-	if (value == 1)
-		*force_reload_fw = true;
-	else if (value == 0)
-		*force_reload_fw = false;
-	else
+	if (value == 1) {
+		*value_ret = true;
+	} else if (value == 0) {
+		*value_ret = false;
+	} else {
 		PMD_DRV_LOG(ERR, "The param does not work, the format is %s=0/1",
-				NFP_PF_FORCE_RELOAD_FW);
+				key_match);
+		return -EINVAL;
+	}
+
+	return 0;
 }
 
-static void
+static int
 nfp_devargs_parse(struct nfp_devargs *nfp_devargs_param,
 		const struct rte_devargs *devargs)
 {
+	int ret;
 	struct rte_kvargs *kvlist;
 
 	if (devargs == NULL)
-		return;
+		return 0;
 
 	kvlist = rte_kvargs_parse(devargs->args, NULL);
 	if (kvlist == NULL)
-		return;
+		return -EINVAL;
 
-	nfp_devarg_parse_force_reload_fw(kvlist, &nfp_devargs_param->force_reload_fw);
+	ret = nfp_devarg_parse_bool_para(kvlist, NFP_PF_FORCE_RELOAD_FW,
+			&nfp_devargs_param->force_reload_fw);
+	if (ret != 0)
+		goto exit;
 
+exit:
 	rte_kvargs_free(kvlist);
+
+	return ret;
 }
 
 static void
@@ -1856,7 +1874,12 @@ nfp_pf_init(struct rte_pci_device *pci_dev)
 		nfp_eth_set_configured(cpp, index, 0);
 	}
 
-	nfp_devargs_parse(&pf_dev->devargs, pci_dev->device.devargs);
+	ret = nfp_devargs_parse(&pf_dev->devargs, pci_dev->device.devargs);
+	if (ret != 0) {
+		PMD_INIT_LOG(ERR, "Error when parsing device args");
+		ret = -EINVAL;
+		goto eth_table_cleanup;
+	}
 
 	if (nfp_fw_setup(pci_dev, cpp, nfp_eth_table, hwinfo,
 			dev_info, &pf_dev->multi_pf, pf_dev->devargs.force_reload_fw) != 0) {
-- 
2.39.1