[PATCH] examples/simple_mp: fix received message length

[PATCH] examples/simple_mp: fix received message length

[Xueming Li]

Simple_mp example receives message size less than 64 chars while send
side accepts chars less than 128, this leads to different result when
sending text lenght larger than 64.
This patch uses same buffer length on both message pool and command
line.

Fixes: af75078fece3 ("first public release")

Signed-off-by: Xueming Li <xuemingl@mellanox.com>
---
 examples/multi_process/simple_mp/main.c        | 4 ++--
 examples/multi_process/simple_mp/mp_commands.c | 2 +-
 examples/multi_process/simple_mp/mp_commands.h | 1 -
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/examples/multi_process/simple_mp/main.c b/examples/multi_process/simple_mp/main.c
index 2843d94..53b87c5 100644
--- a/examples/multi_process/simple_mp/main.c
+++ b/examples/multi_process/simple_mp/main.c
@@ -67,6 +67,7 @@
 #include <rte_mempool.h>
 #include <cmdline_rdline.h>
 #include <cmdline_parse.h>
+#include <cmdline_parse_string.h>
 #include <cmdline_socket.h>
 #include <cmdline.h>
 #include "mp_commands.h"
@@ -76,7 +77,6 @@
 static const char *_MSG_POOL = "MSG_POOL";
 static const char *_SEC_2_PRI = "SEC_2_PRI";
 static const char *_PRI_2_SEC = "PRI_2_SEC";
-const unsigned string_size = 64;
 
 struct rte_ring *send_ring, *recv_ring;
 struct rte_mempool *message_pool;
@@ -121,7 +121,7 @@
 		send_ring = rte_ring_create(_PRI_2_SEC, ring_size, rte_socket_id(), flags);
 		recv_ring = rte_ring_create(_SEC_2_PRI, ring_size, rte_socket_id(), flags);
 		message_pool = rte_mempool_create(_MSG_POOL, pool_size,
-				string_size, pool_cache, priv_data_sz,
+				STR_TOKEN_SIZE, pool_cache, priv_data_sz,
 				NULL, NULL, NULL, NULL,
 				rte_socket_id(), flags);
 	} else {
diff --git a/examples/multi_process/simple_mp/mp_commands.c b/examples/multi_process/simple_mp/mp_commands.c
index 8da244b..cde3abd 100644
--- a/examples/multi_process/simple_mp/mp_commands.c
+++ b/examples/multi_process/simple_mp/mp_commands.c
@@ -78,7 +78,7 @@ static void cmd_send_parsed(void *parsed_result,
 
 	if (rte_mempool_get(message_pool, &msg) < 0)
 		rte_panic("Failed to get message buffer\n");
-	snprintf((char *)msg, string_size, "%s", res->message);
+	snprintf((char *)msg, STR_TOKEN_SIZE, "%s", res->message);
 	if (rte_ring_enqueue(send_ring, msg) < 0) {
 		printf("Failed to send message - message discarded\n");
 		rte_mempool_put(message_pool, msg);
diff --git a/examples/multi_process/simple_mp/mp_commands.h b/examples/multi_process/simple_mp/mp_commands.h
index 7e9a4ab..452b364 100644
--- a/examples/multi_process/simple_mp/mp_commands.h
+++ b/examples/multi_process/simple_mp/mp_commands.h
@@ -34,7 +34,6 @@
 #ifndef _SIMPLE_MP_COMMANDS_H_
 #define _SIMPLE_MP_COMMANDS_H_
 
-extern const unsigned string_size;
 extern struct rte_ring *send_ring;
 extern struct rte_mempool *message_pool;
 extern volatile int quit;
-- 
1.8.3.1

Re: [PATCH] examples/simple_mp: fix received message length

[Thomas Monjalon]

26/10/2017 10:29, Xueming Li:
> Simple_mp example receives message size less than 64 chars while send
> side accepts chars less than 128, this leads to different result when
> sending text lenght larger than 64.
> This patch uses same buffer length on both message pool and command
> line.
> 
> Fixes: af75078fece3 ("first public release")
> 
> Signed-off-by: Xueming Li <xuemingl@mellanox.com>

Applied, thanks