[dpdk-dev] [PATCH v2 2/2] Define macro for iov_max default value

[olegpoly123]

Cc: stable at dpdk.org

Signed-off-by: Oeg Polyakov <opolyakov at northforgeinc.com>
---
 drivers/net/tap/rte_eth_tap.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index cd48b2b2a..e7da73509 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -68,6 +68,8 @@
 /* IPC key for queue fds sync */
 #define TAP_MP_KEY "tap_mp_sync_queues"
 
+#define TAP_IOV_DEFAULT_MAX 1024
+
 static int tap_devices_count;
 static struct rte_vdev_driver pmd_tap_drv;
 static struct rte_vdev_driver pmd_tun_drv;
@@ -1328,8 +1330,8 @@ tap_rx_queue_setup(struct rte_eth_dev *dev,
 	long iov_max = sysconf(_SC_IOV_MAX);
 	if (iov_max <= 0) {
 		TAP_LOG(WARNING,
-			"_SC_IOV_MAX is not defined. Using 1024 as default\n");
-		iov_max = 1024;
+			"_SC_IOV_MAX is not defined. Using %d as default\n", TAP_IOV_DEFAULT_MAX);
+		iov_max = TAP_IOV_DEFAULT_MAX;
 	}
 	uint16_t nb_desc = RTE_MIN(nb_rx_desc, iov_max - 1);
 	struct iovec (*iovecs)[nb_desc + 1];
-- 
2.14.1