[PATCH v1] eventdev/crypto: overflow in circular buffer

[Ganapati Kundapura]

Crypto adapter checks CPM backpressure once in enq_run()
This leads to buffer overflow if some ops failed to flush
to cryptodev.

Checked CPM backpressure for every iteration in enq_run()

Signed-off-by: Ganapati Kundapura <ganapati.kundap...@intel.com>

diff --git a/lib/eventdev/rte_event_crypto_adapter.c 
b/lib/eventdev/rte_event_crypto_adapter.c
index 3c585d7..e7e9455 100644
--- a/lib/eventdev/rte_event_crypto_adapter.c
+++ b/lib/eventdev/rte_event_crypto_adapter.c
@@ -585,14 +585,15 @@ eca_crypto_adapter_enq_run(struct event_crypto_adapter 
*adapter,
        if (adapter->mode == RTE_EVENT_CRYPTO_ADAPTER_OP_NEW)
                return 0;
 
-       if (unlikely(adapter->stop_enq_to_cryptodev)) {
-               nb_enqueued += eca_crypto_enq_flush(adapter);
+       for (nb_enq = 0; nb_enq < max_enq; nb_enq += n) {
 
-               if (unlikely(adapter->stop_enq_to_cryptodev))
-                       goto skip_event_dequeue_burst;
-       }
+               if (unlikely(adapter->stop_enq_to_cryptodev)) {
+                       nb_enqueued += eca_crypto_enq_flush(adapter);
+
+                       if (unlikely(adapter->stop_enq_to_cryptodev))
+                               break;
+               }
 
-       for (nb_enq = 0; nb_enq < max_enq; nb_enq += n) {
                stats->event_poll_count++;
                n = rte_event_dequeue_burst(event_dev_id,
                                            event_port_id, ev, BATCH_SIZE, 0);
@@ -603,8 +604,6 @@ eca_crypto_adapter_enq_run(struct event_crypto_adapter 
*adapter,
                nb_enqueued += eca_enq_to_cryptodev(adapter, ev, n);
        }
 
-skip_event_dequeue_burst:
-
        if ((++adapter->transmit_loop_count &
                (CRYPTO_ENQ_FLUSH_THRESHOLD - 1)) == 0) {
                nb_enqueued += eca_crypto_enq_flush(adapter);
-- 
2.6.4