[RFC PATCH 19/19] app/test-pmd: fix build with shadow warnings enabled

[Bruce Richardson <bruce.richardson@intel.com>]

Rename or remove shadowed variables so as to build cleanly with
-Wshadow.

Fixes: 55c074f3ba1d ("app/testpmd: support GENEVE option item")
Fixes: 9213c50e36fa ("app/testpmd: support GTP PSC option in raw sets")
Fixes: 26b7259a798d ("app/testpmd: support GRE option flow item")
Fixes: d2121ceccd29 ("app/testpmd: rework display of Rx descriptors")
Fixes: 90c263867b00 ("app/testpmd: enhance command-line parsing")
Fixes: 62d3216d6194 ("app/testpmd: add latency statistics calculation")
Cc: stable@dpdk.org

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 app/test-pmd/cmdline_flow.c | 42 ++++++++++++++++++-------------------
 app/test-pmd/config.c       | 15 +++++--------
 app/test-pmd/parameters.c   |  4 +---
 app/test-pmd/testpmd.c      |  2 +-
 4 files changed, 28 insertions(+), 35 deletions(-)

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index 54b247899d..ebc036b14b 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -14064,7 +14064,7 @@ cmd_set_raw_parsed(const struct buffer *in)
 	data_tail = data + ACTION_RAW_ENCAP_MAX_DATA;
 	for (i = n - 1 ; i >= 0; --i) {
 		const struct rte_flow_item_gtp *gtp;
-		const struct rte_flow_item_geneve_opt *opt;
+		const struct rte_flow_item_geneve_opt *geneve_opt;
 		struct rte_flow_item_ipv6_routing_ext *ext;
 
 		item = in->args.vc.pattern + i;
@@ -14136,16 +14136,16 @@ cmd_set_raw_parsed(const struct buffer *in)
 			size = sizeof(struct rte_geneve_hdr);
 			break;
 		case RTE_FLOW_ITEM_TYPE_GENEVE_OPT:
-			opt = (const struct rte_flow_item_geneve_opt *)
+			geneve_opt = (const struct rte_flow_item_geneve_opt *)
 								item->spec;
 			size = offsetof(struct rte_flow_item_geneve_opt,
 					option_len) + sizeof(uint8_t);
-			if (opt->option_len && opt->data) {
-				*total_size += opt->option_len *
+			if (geneve_opt->option_len && geneve_opt->data) {
+				*total_size += geneve_opt->option_len *
 					       sizeof(uint32_t);
 				rte_memcpy(data_tail - (*total_size),
-					   opt->data,
-					   opt->option_len * sizeof(uint32_t));
+					   geneve_opt->data,
+					   geneve_opt->option_len * sizeof(uint32_t));
 			}
 			break;
 		case RTE_FLOW_ITEM_TYPE_L2TPV3OIP:
@@ -14195,7 +14195,7 @@ cmd_set_raw_parsed(const struct buffer *in)
 				goto error;
 			} else {
 				const struct rte_flow_item_gtp_psc
-					*opt = item->spec;
+					*gtp_opt = item->spec;
 				struct rte_gtp_psc_generic_hdr *hdr;
 				size_t hdr_size = RTE_ALIGN(sizeof(*hdr),
 							 sizeof(int32_t));
@@ -14203,7 +14203,7 @@ cmd_set_raw_parsed(const struct buffer *in)
 				*total_size += hdr_size;
 				hdr = (typeof(hdr))(data_tail - (*total_size));
 				memset(hdr, 0, hdr_size);
-				*hdr = opt->hdr;
+				*hdr = gtp_opt->hdr;
 				hdr->ext_hdr_len = 1;
 				gtp_psc = i;
 				size = 0;
@@ -14225,25 +14225,25 @@ cmd_set_raw_parsed(const struct buffer *in)
 			size = 0;
 			if (item->spec) {
 				const struct rte_flow_item_gre_opt
-					*opt = item->spec;
-				if (opt->checksum_rsvd.checksum) {
+					*gre_opt = item->spec;
+				if (gre_opt->checksum_rsvd.checksum) {
 					*total_size +=
-						sizeof(opt->checksum_rsvd);
+						sizeof(gre_opt->checksum_rsvd);
 					rte_memcpy(data_tail - (*total_size),
-						   &opt->checksum_rsvd,
-						   sizeof(opt->checksum_rsvd));
+						   &gre_opt->checksum_rsvd,
+						   sizeof(gre_opt->checksum_rsvd));
 				}
-				if (opt->key.key) {
-					*total_size += sizeof(opt->key.key);
+				if (gre_opt->key.key) {
+					*total_size += sizeof(gre_opt->key.key);
 					rte_memcpy(data_tail - (*total_size),
-						   &opt->key.key,
-						   sizeof(opt->key.key));
+						   &gre_opt->key.key,
+						   sizeof(gre_opt->key.key));
 				}
-				if (opt->sequence.sequence) {
-					*total_size += sizeof(opt->sequence.sequence);
+				if (gre_opt->sequence.sequence) {
+					*total_size += sizeof(gre_opt->sequence.sequence);
 					rte_memcpy(data_tail - (*total_size),
-						   &opt->sequence.sequence,
-						   sizeof(opt->sequence.sequence));
+						   &gre_opt->sequence.sequence,
+						   sizeof(gre_opt->sequence.sequence));
 				}
 			}
 			proto = 0x2F;
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 3ce2a14a1b..62d7408bc4 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -4490,15 +4490,9 @@ ring_rxd_display_dword(union igb_ring_dword dword)
 
 static void
 ring_rx_descriptor_display(const struct rte_memzone *ring_mz,
-#ifndef RTE_NET_INTEL_USE_16BYTE_DESC
 			   portid_t port_id,
-#else
-			   __rte_unused portid_t port_id,
-#endif
 			   uint16_t desc_id)
 {
-	struct igb_ring_desc_16_bytes *ring =
-		(struct igb_ring_desc_16_bytes *)ring_mz->addr;
 #ifndef RTE_NET_INTEL_USE_16BYTE_DESC
 	int ret;
 	struct rte_eth_dev_info dev_info;
@@ -4528,12 +4522,15 @@ ring_rx_descriptor_display(const struct rte_memzone *ring_mz,
 	}
 #endif
 	/* 16 bytes RX descriptor */
+	struct igb_ring_desc_16_bytes *ring =
+		(struct igb_ring_desc_16_bytes *)ring_mz->addr;
 	ring[desc_id].lo_dword.dword =
 		rte_le_to_cpu_64(ring[desc_id].lo_dword.dword);
 	ring_rxd_display_dword(ring[desc_id].lo_dword);
 	ring[desc_id].hi_dword.dword =
 		rte_le_to_cpu_64(ring[desc_id].hi_dword.dword);
 	ring_rxd_display_dword(ring[desc_id].hi_dword);
+	RTE_SET_USED(port_id);
 }
 
 static void
@@ -4742,7 +4739,6 @@ port_rss_hash_conf_show(portid_t port_id, int show_rss_key, int show_rss_algo)
 {
 	struct rte_eth_rss_conf rss_conf = {0};
 	uint8_t rss_key[RSS_HASH_KEY_LENGTH];
-	uint64_t rss_hf;
 	uint8_t i;
 	int diag;
 	struct rte_eth_dev_info dev_info;
@@ -4783,8 +4779,7 @@ port_rss_hash_conf_show(portid_t port_id, int show_rss_key, int show_rss_algo)
 		}
 		return;
 	}
-	rss_hf = rss_conf.rss_hf;
-	if (rss_hf == 0) {
+	if (rss_conf.rss_hf == 0) {
 		printf("RSS disabled\n");
 		return;
 	}
@@ -4796,7 +4791,7 @@ port_rss_hash_conf_show(portid_t port_id, int show_rss_key, int show_rss_algo)
 	}
 
 	printf("RSS functions:\n");
-	rss_types_display(rss_hf, TESTPMD_RSS_TYPES_CHAR_NUM_PER_LINE);
+	rss_types_display(rss_conf.rss_hf, TESTPMD_RSS_TYPES_CHAR_NUM_PER_LINE);
 
 	if (!show_rss_key)
 		return;
diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index 96973906fd..e91d45fc45 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -987,11 +987,10 @@ launch_args_parse(int argc, char** argv)
 			break;
 		case TESTPMD_OPT_STATS_PERIOD_NUM: {
 			char *end = NULL;
-			unsigned int n;
 
 			n = strtoul(optarg, &end, 10);
 			if ((optarg[0] == '\0') || (end == NULL) ||
-					(*end != '\0'))
+					(*end != '\0') || n <= 0 || n >= UINT16_MAX)
 				rte_exit(EXIT_FAILURE, "Invalid stats-period value\n");
 
 			stats_period = n;
@@ -1339,7 +1338,6 @@ launch_args_parse(int argc, char** argv)
 			break;
 		case TESTPMD_OPT_HAIRPIN_MODE_NUM: {
 			char *end = NULL;
-			unsigned int n;
 
 			errno = 0;
 			n = strtoul(optarg, &end, 0);
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 2360da3a48..af724b2ea8 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -4636,7 +4636,7 @@ main(int argc, char** argv)
 
 #ifdef RTE_LIB_LATENCYSTATS
 	if (latencystats_enabled != 0) {
-		int ret = rte_latencystats_init(1, NULL);
+		ret = rte_latencystats_init(1, NULL);
 		if (ret)
 			fprintf(stderr,
 				"Warning: latencystats init() returned error %d\n",
-- 
2.48.1