[dpdk-dev] [PATCH] app/testpmd: fix RSS key

Zhang,Alvin alvinx.zhang at intel.com
Wed Dec 30 06:29:28 CET 2020


From: Alvin Zhang <alvinx.zhang at intel.com>

Since the patch '1848b117' has set the value of key in 'struct
rte_flow_action_rss' to NULL, the PMD cannot get the RSS key now.

This patch sets offset and size of the key pointer as the first
parameter of the token 'key' and copies the start address of the
'HEX' data to the location specified by the first parameter of
the token.

Fixes: 1848b117cca1 ("app/testpmd: fix RSS key for flow API RSS rule")
Cc: stable at dpdk.org

Signed-off-by: Alvin Zhang <alvinx.zhang at intel.com>
---
 app/test-pmd/cmdline_flow.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index 585cab9..6eb46d3 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -3403,7 +3403,10 @@ static int comp_set_sample_index(struct context *, const struct token *,
 		.name = "key",
 		.help = "RSS hash key",
 		.next = NEXT(action_rss, NEXT_ENTRY(HEX)),
-		.args = ARGS(ARGS_ENTRY_ARB(0, 0),
+		.args = ARGS(ARGS_ENTRY_ARB
+			     (offsetof(struct action_rss_data, conf) +
+			      offsetof(struct rte_flow_action_rss, key),
+			      sizeof(((struct rte_flow_action_rss *)0)->key)),
 			     ARGS_ENTRY_ARB
 			     (offsetof(struct action_rss_data, conf) +
 			      offsetof(struct rte_flow_action_rss, key_len),
@@ -6495,19 +6498,18 @@ static int comp_set_sample_index(struct context *, const struct token *,
 	if (ctx->objmask)
 		memset((uint8_t *)ctx->objmask + arg_data->offset,
 					0xff, hexlen);
+
 	/* Save address if requested. */
 	if (arg_addr->size) {
-		memcpy((uint8_t *)ctx->object + arg_addr->offset,
-		       (void *[]){
-			(uint8_t *)ctx->object + arg_data->offset
-		       },
-		       arg_addr->size);
+		if (arg_addr->size < sizeof(void *))
+			goto error;
+
+		*(void **)((uint8_t *)ctx->object + arg_addr->offset) =
+				(uint8_t *)ctx->object + arg_data->offset;
+
 		if (ctx->objmask)
-			memcpy((uint8_t *)ctx->objmask + arg_addr->offset,
-			       (void *[]){
-				(uint8_t *)ctx->objmask + arg_data->offset
-			       },
-			       arg_addr->size);
+			*(void **)((uint8_t *)ctx->objmask + arg_addr->offset) =
+				(uint8_t *)ctx->objmask + arg_data->offset;
 	}
 	return len;
 error:
-- 
1.8.3.1



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