[PATCH v5 12/20] app/testpmd: remove use of VLAs for Windows built

[Andre Muezerie <andremue@linux.microsoft.com>]

From: Tyler Retzlaff <roretzla@linux.microsoft.com>

MSVC does not support VLAs, replace VLAs with standard C arrays
or alloca(). alloca() is available for all toolchain/platform
combinations officially supported by DPDK.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
 app/test-pmd/cmdline.c      |  2 +-
 app/test-pmd/cmdline_flow.c | 15 ++++++++++-----
 app/test-pmd/config.c       | 16 +++++++++-------
 3 files changed, 20 insertions(+), 13 deletions(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 7e0666e9f6..2897e44c34 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -13274,7 +13274,7 @@ cmd_set_port_ptypes_parsed(
 		return;
 	}
 
-	uint32_t ptypes[ret];
+	uint32_t *ptypes = alloca(sizeof(uint32_t) * ret);
 
 	ret = rte_eth_dev_set_ptypes(port_id, ptype_mask, ptypes, ret);
 	if (ret < 0) {
diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index 1e4f2ebc55..fb0c4f838d 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -11707,8 +11707,7 @@ parse_hex(struct context *ctx, const struct token *token,
 	char tmp[16]; /* Ought to be enough. */
 	int ret;
 	unsigned int hexlen = len;
-	unsigned int length = 256;
-	uint8_t hex_tmp[length];
+	uint8_t hex_tmp[256];
 
 	/* Arguments are expected. */
 	if (!arg_data)
@@ -11735,7 +11734,7 @@ parse_hex(struct context *ctx, const struct token *token,
 		str += 2;
 		hexlen -= 2;
 	}
-	if (hexlen > length)
+	if (hexlen > RTE_DIM(hex_tmp))
 		goto error;
 	ret = parse_hex_string(str, hex_tmp, &hexlen);
 	if (ret < 0)
@@ -11868,10 +11867,13 @@ parse_ipv4_addr(struct context *ctx, const struct token *token,
 		void *buf, unsigned int size)
 {
 	const struct arg *arg = pop_args(ctx);
-	char str2[len + 1];
+	char str2[INET_ADDRSTRLEN];
 	struct in_addr tmp;
 	int ret;
 
+	/* Length is longer than the max length an IPv4 address can have. */
+	if (len >= INET_ADDRSTRLEN)
+		return -1;
 	/* Argument is expected. */
 	if (!arg)
 		return -1;
@@ -11914,11 +11916,14 @@ parse_ipv6_addr(struct context *ctx, const struct token *token,
 		void *buf, unsigned int size)
 {
 	const struct arg *arg = pop_args(ctx);
-	char str2[len + 1];
+	char str2[INET6_ADDRSTRLEN];
 	struct rte_ipv6_addr tmp;
 	int ret;
 
 	(void)token;
+	/* Length is longer than the max length an IPv6 address can have. */
+	if (len >= INET6_ADDRSTRLEN)
+		return -1;
 	/* Argument is expected. */
 	if (!arg)
 		return -1;
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 88770b4dfc..9ff2b8817f 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -1802,7 +1802,8 @@ port_flow_configure(portid_t port_id,
 {
 	struct rte_port *port;
 	struct rte_flow_error error;
-	const struct rte_flow_queue_attr *attr_list[nb_queue];
+	const struct rte_flow_queue_attr **attr_list =
+	    alloca(sizeof(struct rte_flow_queue_attr *) * nb_queue);
 	int std_queue;
 
 	if (port_id_is_invalid(port_id, ENABLED_WARN) ||
@@ -2616,10 +2617,10 @@ port_flow_template_table_create(portid_t port_id, uint32_t id,
 	int ret;
 	uint32_t i;
 	struct rte_flow_error error;
-	struct rte_flow_pattern_template
-			*flow_pattern_templates[nb_pattern_templates];
-	struct rte_flow_actions_template
-			*flow_actions_templates[nb_actions_templates];
+	struct rte_flow_pattern_template **flow_pattern_templates =
+	    alloca(sizeof(struct rte_flow_pattern_template *) * nb_pattern_templates);
+	struct rte_flow_actions_template **flow_actions_templates =
+	    alloca(sizeof(struct rte_flow_actions_template *) * nb_actions_templates);
 
 	if (port_id_is_invalid(port_id, ENABLED_WARN) ||
 	    port_id == (portid_t)RTE_PORT_ALL)
@@ -5529,7 +5530,7 @@ parse_port_list(const char *list, unsigned int *values, unsigned int maxsize)
 	char *end = NULL;
 	int min, max;
 	int value, i;
-	unsigned int marked[maxsize];
+	unsigned int *marked = alloca(sizeof(unsigned int) * maxsize);
 
 	if (list == NULL || values == NULL)
 		return 0;
@@ -7270,7 +7271,8 @@ show_macs(portid_t port_id)
 	if (eth_dev_info_get_print_err(port_id, &dev_info))
 		return;
 
-	struct rte_ether_addr addr[dev_info.max_mac_addrs];
+	struct rte_ether_addr *addr =
+	    alloca(sizeof(struct rte_ether_addr) * dev_info.max_mac_addrs);
 	rc = rte_eth_macaddrs_get(port_id, addr, dev_info.max_mac_addrs);
 	if (rc < 0)
 		return;
-- 
2.34.1