[dpdk-dev] [PATCH 1/5] [pktgen] fix race condition in start

[Rafal Kozik <rk@semihalf.com>]

Flag SENDING_PACKETS must be set last.
When it is set before SEND_FOREVER flag, Tx lcores start to call
pktgen_send_pkts. But as current_tx_count is 0 and SEND_FOREVER
is not yet set, SENDING_PACKETS will be cleared.
This causes in some cases that start command will no take effect.

Fixes: f5f901fdf52b ("Update for 1.8 rte_mbuf changes.")

Signed-off-by: Rafal Kozik <rk@semihalf.com>
---
 app/pktgen-cmds.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/pktgen-cmds.c b/app/pktgen-cmds.c
index 95f6ef1..655f6bd 100644
--- a/app/pktgen-cmds.c
+++ b/app/pktgen-cmds.c
@@ -1412,10 +1412,10 @@ pktgen_start_transmitting(port_info_t *info)
 		rte_atomic64_set(&info->current_tx_count,
 				 rte_atomic64_read(&info->transmit_count));
 
-		pktgen_set_port_flags(info, SENDING_PACKETS);
-
 		if (rte_atomic64_read(&info->current_tx_count) == 0)
 			pktgen_set_port_flags(info, SEND_FOREVER);
+
+		pktgen_set_port_flags(info, SENDING_PACKETS);
 	}
 }
 
-- 
2.7.4