[PATCH 6/6] common/cnxk: flow aginig delaying app shutdown

[Harman Kalra]

If flow aging is enabled application termination may take time
equivalent to aging timeout. This is because on termination flow
thread uses a sleep call which is uninterruptible.

Signed-off-by: Harman Kalra <hkalra at marvell.com>
Signed-off-by: Kiran Kumar K <kirankumark at marvell.com>
---
 drivers/common/cnxk/roc_npc_aging.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/common/cnxk/roc_npc_aging.c b/drivers/common/cnxk/roc_npc_aging.c
index 15f6e61d76..66c953135a 100644
--- a/drivers/common/cnxk/roc_npc_aging.c
+++ b/drivers/common/cnxk/roc_npc_aging.c
@@ -133,6 +133,21 @@ npc_mcam_get_hit_status(struct npc *npc, uint64_t *mcam_ids, uint16_t start_id,
 	return rc;
 }
 
+static void
+npc_age_wait_until(struct roc_npc_flow_age *flow_age)
+{
+#define NPC_AGE_WAIT_TIMEOUT_MS 1000
+#define NPC_AGE_WAIT_TIMEOUT_US (NPC_AGE_WAIT_TIMEOUT_MS * NPC_AGE_WAIT_TIMEOUT_MS)
+	uint64_t timeout = 0;
+	uint64_t sleep = 10 * NPC_AGE_WAIT_TIMEOUT_MS;
+
+	do {
+		plt_delay_us(sleep);
+		timeout += sleep;
+	} while (!flow_age->aged_flows_get_thread_exit &&
+		 (timeout < (flow_age->aging_poll_freq * NPC_AGE_WAIT_TIMEOUT_US)));
+}
+
 uint32_t
 npc_aged_flows_get(void *args)
 {
@@ -197,7 +212,7 @@ npc_aged_flows_get(void *args)
 		plt_seqcount_write_end(&flow_age->seq_cnt);
 
 lbl_sleep:
-		sleep(flow_age->aging_poll_freq);
+	npc_age_wait_until(flow_age);
 	}
 
 	return 0;
-- 
2.18.0