examples/dpdk_qat: minor change

[dpdk.git] / examples / dpdk_qat / main.c

diff --git a/examples/dpdk_qat/main.c b/examples/dpdk_qat/main.c
index 38f55a1..998b759 100644 (file)
--- a/examples/dpdk_qat/main.c
+++ b/examples/dpdk_qat/main.c
@@ -96,9 +96,7 @@
 #define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
 
 #define MAX_PKT_BURST 32
-#define BURST_TX_DRAIN 200000ULL /* around 100us at 2 Ghz */
-
-#define SOCKET0 0
+#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
 #define TX_QUEUE_FLUSH_MASK 0xFFFFFFFF
 #define TSC_COUNT_LIMIT 1000
@@ -320,7 +318,8 @@ static inline uint8_t
 get_output_port(uint8_t input_port)
 {
        RTE_BUILD_BUG_ON((RTE_MAX_ETHPORTS & 1) != 0);
-       return (uint8_t)(input_port ^ 1);
+       /* Simple scheme to map consecutive ports. */
+        return (uint8_t)(input_port ^ 1);
 }
 
 /* main processing loop */
@@ -329,6 +328,7 @@ main_loop(__attribute__((unused)) void *dummy)
 {
        uint32_t lcoreid;
        struct lcore_conf *qconf;
+       const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 
        lcoreid = rte_lcore_id();
        qconf = &lcore_conf[lcoreid];
@@ -348,7 +348,7 @@ main_loop(__attribute__((unused)) void *dummy)
                        tsc = rte_rdtsc();
 
                        diff_tsc = tsc - qconf->tsc;
-                       if (unlikely(diff_tsc > BURST_TX_DRAIN)) {
+                       if (unlikely(diff_tsc > drain_tsc)) {
                                nic_tx_flush_queues(qconf);
                                crypto_flush_tx_queue(lcoreid);
                                qconf->tsc = tsc;