app/testpmd: allocate FEC capability array dynamically

Request the driver for number of entries in the FEC caps
array and then dynamically allocate the array.

Signed-off-by: Karra Satwik <kaara.satwik@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Acked-by: Xiaoyun Li <xiaoyun.li@intel.com>
Acked-by: Min Hu (Connor) <humin29@huawei.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 596dd23..855dbc2 100644 (file)
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -16266,11 +16266,9 @@ cmd_show_fec_capability_parsed(void *parsed_result,
                __rte_unused struct cmdline *cl,
                __rte_unused void *data)
 {
-#define FEC_CAP_NUM 2
        struct cmd_show_fec_capability_result *res = parsed_result;
-       struct rte_eth_fec_capa speed_fec_capa[FEC_CAP_NUM];
-       unsigned int num = FEC_CAP_NUM;
-       unsigned int ret_num;
+       struct rte_eth_fec_capa *speed_fec_capa;
+       unsigned int num;
        int ret;
 
        if (!rte_eth_dev_is_valid_port(res->cmd_pid)) {
@@ -16278,17 +16276,31 @@ cmd_show_fec_capability_parsed(void *parsed_result,
                return;
        }
 
-       ret = rte_eth_fec_get_capability(res->cmd_pid, speed_fec_capa, num);
+       ret = rte_eth_fec_get_capability(res->cmd_pid, NULL, 0);
        if (ret == -ENOTSUP) {
                printf("Function not implemented\n");
                return;
        } else if (ret < 0) {
-               printf("Get FEC capability failed\n");
+               printf("Get FEC capability failed: %d\n", ret);
+               return;
+       }
+
+       num = (unsigned int)ret;
+       speed_fec_capa = calloc(num, sizeof(*speed_fec_capa));
+       if (speed_fec_capa == NULL) {
+               printf("Failed to alloc FEC capability buffer\n");
                return;
        }
 
-       ret_num = (unsigned int)ret;
-       show_fec_capability(ret_num, speed_fec_capa);
+       ret = rte_eth_fec_get_capability(res->cmd_pid, speed_fec_capa, num);
+       if (ret < 0) {
+               printf("Error getting FEC capability: %d\n", ret);
+               goto out;
+       }
+
+       show_fec_capability(num, speed_fec_capa);
+out:
+       free(speed_fec_capa);
 }
 
 cmdline_parse_token_string_t cmd_show_fec_capability_show =