net/i40e: add parameter check for RSS flow init

There need an parameter check for RSS flow init, or it may cause
core dump if pointer is NULL in memory copy.

Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 1c77906..790ecc3 100644 (file)
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -12552,13 +12552,16 @@ i40e_rss_conf_init(struct i40e_rte_flow_rss_conf *out,
        if (in->key_len > RTE_DIM(out->key) ||
            in->queue_num > RTE_DIM(out->queue))
                return -EINVAL;
+       if (!in->key && in->key_len)
+               return -EINVAL;
+       if (in->key)
+               out->conf.key = memcpy(out->key, in->key, in->key_len);
        out->conf = (struct rte_flow_action_rss){
                .func = in->func,
                .level = in->level,
                .types = in->types,
                .key_len = in->key_len,
                .queue_num = in->queue_num,
-               .key = memcpy(out->key, in->key, in->key_len),
                .queue = memcpy(out->queue, in->queue,
                                sizeof(*in->queue) * in->queue_num),
        };