[dpdk-dev] [PATCH 3/4] examples/l3fwd-power: replace desc done with Rx queue count

[Nikhil Agarwal]

HW queue based platforms may not support descriptor done API.
This patch changes the usages to rx_queue_count API, which
is more generic.

Signed-off-by: Nikhil Agarwal <nikhil.agar...@linaro.org>
---
 examples/l3fwd-power/main.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index 50c3702..4ddd04c 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -755,6 +755,7 @@ power_freq_scaleup_heuristic(unsigned lcore_id,
                             uint16_t port_id,
                             uint16_t queue_id)
 {
+       uint32_t rxq_count = rte_eth_rx_queue_count(port_id, queue_id);
 /**
  * HW Rx queue size is 128 by default, Rx burst read at maximum 32 entries
  * per iteration
@@ -766,15 +767,12 @@ power_freq_scaleup_heuristic(unsigned lcore_id,
 #define FREQ_UP_TREND2_ACC   100
 #define FREQ_UP_THRESHOLD    10000
 
-       if (likely(rte_eth_rx_descriptor_done(port_id, queue_id,
-                       FREQ_GEAR3_RX_PACKET_THRESHOLD) > 0)) {
+       if (likely(rxq_count > FREQ_GEAR3_RX_PACKET_THRESHOLD)) {
                stats[lcore_id].trend = 0;
                return FREQ_HIGHEST;
-       } else if (likely(rte_eth_rx_descriptor_done(port_id, queue_id,
-                       FREQ_GEAR2_RX_PACKET_THRESHOLD) > 0))
+       } else if (likely(rxq_count > FREQ_GEAR2_RX_PACKET_THRESHOLD))
                stats[lcore_id].trend += FREQ_UP_TREND2_ACC;
-       else if (likely(rte_eth_rx_descriptor_done(port_id, queue_id,
-                       FREQ_GEAR1_RX_PACKET_THRESHOLD) > 0))
+       else if (likely(rxq_count > FREQ_GEAR1_RX_PACKET_THRESHOLD))
                stats[lcore_id].trend += FREQ_UP_TREND1_ACC;
 
        if (likely(stats[lcore_id].trend > FREQ_UP_THRESHOLD)) {
-- 
2.7.4