[dpdk-dev] [RFC 3/3] eventdev: allow devices requiring maintenance with adapters

[Mattias Rönnblom]

Introduce support for event devices requiring calls to
rte_event_maintain() in the Ethernet RX, Timer and Crypto Eventdev
adapters.
Signed-off-by: Mattias Rönnblom <mattias.ronnb...@ericsson.com>
---
 lib/librte_eventdev/rte_event_crypto_adapter.c | 16 +++++++++++-----
 lib/librte_eventdev/rte_event_eth_rx_adapter.c |  3 +++
 lib/librte_eventdev/rte_event_timer_adapter.c  |  4 +++-
 3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/lib/librte_eventdev/rte_event_crypto_adapter.c 
b/lib/librte_eventdev/rte_event_crypto_adapter.c
index 22d910816..e1bb9d4ab 100644
--- a/lib/librte_eventdev/rte_event_crypto_adapter.c
+++ b/lib/librte_eventdev/rte_event_crypto_adapter.c
@@ -625,19 +625,25 @@ static void
 eca_crypto_adapter_run(struct rte_event_crypto_adapter *adapter,
                        unsigned int max_ops)
 {
-       while (max_ops) {
+       unsigned int ops_left = max_ops;
+
+       while (ops_left > 0) {
                unsigned int e_cnt, d_cnt;
 
-               e_cnt = eca_crypto_adapter_deq_run(adapter, max_ops);
-               max_ops -= RTE_MIN(max_ops, e_cnt);
+               e_cnt = eca_crypto_adapter_deq_run(adapter, ops_left);
+               ops_left -= RTE_MIN(ops_left, e_cnt);
 
-               d_cnt = eca_crypto_adapter_enq_run(adapter, max_ops);
-               max_ops -= RTE_MIN(max_ops, d_cnt);
+               d_cnt = eca_crypto_adapter_enq_run(adapter, ops_left);
+               ops_left -= RTE_MIN(ops_left, d_cnt);
 
                if (e_cnt == 0 && d_cnt == 0)
                        break;
 
        }
+
+       if (ops_left == max_ops)
+               rte_event_maintain(adapter->eventdev_id,
+                                  adapter->event_port_id);
 }
 
 static int
diff --git a/lib/librte_eventdev/rte_event_eth_rx_adapter.c 
b/lib/librte_eventdev/rte_event_eth_rx_adapter.c
index 95dd47820..e6eb6e63f 100644
--- a/lib/librte_eventdev/rte_event_eth_rx_adapter.c
+++ b/lib/librte_eventdev/rte_event_eth_rx_adapter.c
@@ -852,6 +852,9 @@ rxa_eth_rx(struct rte_event_eth_rx_adapter *rx_adapter,
 
        if (buf->count > 0)
                rxa_flush_event_buffer(rx_adapter);
+       else
+               rte_event_maintain(rx_adapter->eventdev_id,
+                                  rx_adapter->event_port_id);
 
        return nb_rx;
 }
diff --git a/lib/librte_eventdev/rte_event_timer_adapter.c 
b/lib/librte_eventdev/rte_event_timer_adapter.c
index 161e21a68..66b42ee3d 100644
--- a/lib/librte_eventdev/rte_event_timer_adapter.c
+++ b/lib/librte_eventdev/rte_event_timer_adapter.c
@@ -741,7 +741,9 @@ swtim_service_func(void *arg)
                sw->stats.ev_enq_count += nb_evs_flushed;
                sw->stats.ev_inv_count += nb_evs_invalid;
                sw->stats.adapter_tick_count++;
-       }
+       } else
+               rte_event_maintain(adapter->data->event_dev_id,
+                                  adapter->data->event_port_id);
 
        return 0;
 }
-- 
2.20.1