[dpdk-dev] [PATCH v1] app/testpmd: set default RSS key as NULL

[Ophir Munk <ophirmu@mellanox.com>]

When creating an RSS rule without specifying a key (see [1]) it is
expected that the device will use the default key.
A NULL key is uded to indicate to a PMD it should use
its default key, however testpmd assigns a non-NULL dummy key
(see [2]) instead.
This does not enable testing any PMD behavior when the RSS key is not
specified. This commit fixes this limitation by setting key to NULL.

[1]
RSS rule example without specifying a key:
flow create 0 ingress <pattern> / end actions rss queues 0 1 end / end
[2]
Testpmd default key assignment:
.key= "testpmd's default RSS hash key, "
"override it for better balancing"

Signed-off-by: Ophir Munk <ophirmu@mellanox.com>
---
v1: Initial version

 app/test-pmd/cmdline_flow.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index 23ea7cc..91e2e35 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -3248,26 +3248,15 @@ static int comp_vc_action_rss_queue(struct context *, const struct token *,
 			.func = RTE_ETH_HASH_FUNCTION_DEFAULT,
 			.level = 0,
 			.types = rss_hf,
-			.key_len = sizeof(action_rss_data->key),
+			.key_len = 0,
 			.queue_num = RTE_MIN(nb_rxq, ACTION_RSS_QUEUE_NUM),
-			.key = action_rss_data->key,
+			.key = NULL,
 			.queue = action_rss_data->queue,
 		},
-		.key = "testpmd's default RSS hash key, "
-			"override it for better balancing",
 		.queue = { 0 },
 	};
 	for (i = 0; i < action_rss_data->conf.queue_num; ++i)
 		action_rss_data->queue[i] = i;
-	if (!port_id_is_invalid(ctx->port, DISABLED_WARN) &&
-	    ctx->port != (portid_t)RTE_PORT_ALL) {
-		struct rte_eth_dev_info info;
-
-		rte_eth_dev_info_get(ctx->port, &info);
-		action_rss_data->conf.key_len =
-			RTE_MIN(sizeof(action_rss_data->key),
-				info.hash_key_size);
-	}
 	action->conf = &action_rss_data->conf;
 	return ret;
 }
-- 
1.8.3.1