[dpdk-dev] [PATCH] examples/exception_path: limit core count to 64
Radu Nicolau
radu.nicolau at intel.com
Tue Feb 20 13:05:57 CET 2018
Application doesn't support more that 64 lcores due to command
line limitation of using a coremask that is parsed as a 64bit
value, so changed it to reflect this limitation.
Fixes: af75078fece3 ("first public release")
Coverity issue: 30688
Cc: stable at dpdk.org
Signed-off-by: Radu Nicolau <radu.nicolau at intel.com>
---
examples/exception_path/main.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/examples/exception_path/main.c b/examples/exception_path/main.c
index 3e5b1e7..dda391c 100644
--- a/examples/exception_path/main.c
+++ b/examples/exception_path/main.c
@@ -41,13 +41,21 @@
#include <rte_string_fns.h>
#include <rte_cycles.h>
+#ifndef APP_MAX_LCORE
+#if (RTE_MAX_LCORE > 64)
+#define APP_MAX_LCORE 64
+#else
+#define APP_MAX_LCORE RTE_MAX_LCORE
+#endif
+#endif
+
/* Macros for printing using RTE_LOG */
#define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
#define FATAL_ERROR(fmt, args...) rte_exit(EXIT_FAILURE, fmt "\n", ##args)
#define PRINT_INFO(fmt, args...) RTE_LOG(INFO, APP, fmt "\n", ##args)
/* Max ports than can be used (each port is associated with two lcores) */
-#define MAX_PORTS (RTE_MAX_LCORE / 2)
+#define MAX_PORTS (APP_MAX_LCORE / 2)
/* Max size of a single packet */
#define MAX_PACKET_SZ (2048)
@@ -101,7 +109,7 @@ static uint64_t input_cores_mask = 0;
static uint64_t output_cores_mask = 0;
/* Array storing port_id that is associated with each lcore */
-static uint16_t port_ids[RTE_MAX_LCORE];
+static uint16_t port_ids[APP_MAX_LCORE];
/* Structure type for recording lcore-specific stats */
struct stats {
@@ -111,7 +119,7 @@ struct stats {
} __rte_cache_aligned;
/* Array of lcore-specific stats */
-static struct stats lcore_stats[RTE_MAX_LCORE];
+static struct stats lcore_stats[APP_MAX_LCORE];
/* Print out statistics on packets handled */
static void
@@ -330,7 +338,9 @@ setup_port_lcore_affinities(void)
uint16_t rx_port = 0;
/* Setup port_ids[] array, and check masks were ok */
- RTE_LCORE_FOREACH(i) {
+ for (i = 0; i < APP_MAX_LCORE; i++) {
+ if (!rte_lcore_is_enabled(i))
+ continue;
if (input_cores_mask & (1ULL << i)) {
/* Skip ports that are not enabled */
while ((ports_mask & (1 << rx_port)) == 0) {
--
2.7.5
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