From: Patrick Keroulas <patrick.keroulas@radio-canada.ca>
To: dev@dpdk.org
Cc: Patrick Keroulas <patrick.keroulas@radio-canada.ca>
Subject: [dpdk-dev] [[PATCH v3 3/4] pdump: convert timestamp to nanoseconds on Rx path
Date: Fri, 24 Jul 2020 16:23:14 -0400 [thread overview]
Message-ID: <20200724202315.19533-4-patrick.keroulas@radio-canada.ca> (raw)
In-Reply-To: <20200724202315.19533-1-patrick.keroulas@radio-canada.ca>
Use start time and device frequency to translate raw Rx hardware
timestamps into nanoseconds.
Signed-off-by: Patrick Keroulas <patrick.keroulas@radio-canada.ca>
---
lib/librte_pdump/rte_pdump.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/lib/librte_pdump/rte_pdump.c b/lib/librte_pdump/rte_pdump.c
index b3c8d5ce43..8fd7e13af5 100644
--- a/lib/librte_pdump/rte_pdump.c
+++ b/lib/librte_pdump/rte_pdump.c
@@ -2,6 +2,8 @@
* Copyright(c) 2016-2018 Intel Corporation
*/
+#include <sys/time.h>
+
#include <rte_memcpy.h>
#include <rte_mbuf.h>
#include <rte_ethdev.h>
@@ -69,6 +71,21 @@ static struct pdump_rxtx_cbs {
} rx_cbs[RTE_MAX_ETHPORTS][RTE_MAX_QUEUES_PER_PORT],
tx_cbs[RTE_MAX_ETHPORTS][RTE_MAX_QUEUES_PER_PORT];
+static uint64_t hz;
+static uint64_t start_time;
+static uint64_t start_cycles;
+
+static inline void
+pdump_ts_to_ns(struct rte_mbuf **pkts, uint16_t nb_pkts)
+{
+ unsigned int i;
+
+ for (i = 0; i < nb_pkts; i++) {
+ if ((pkts[i]->ol_flags & PKT_RX_TIMESTAMP) && hz)
+ pkts[i]->timestamp = start_time +
+ (pkts[i]->timestamp - start_cycles) * NS_PER_S / hz;
+ }
+}
static inline void
pdump_copy(struct rte_mbuf **pkts, uint16_t nb_pkts, void *user_params)
@@ -107,6 +124,7 @@ pdump_rx(uint16_t port __rte_unused, uint16_t qidx __rte_unused,
uint16_t max_pkts __rte_unused,
void *user_params)
{
+ pdump_ts_to_ns(pkts, nb_pkts);
pdump_copy(pkts, nb_pkts, user_params);
return nb_pkts;
}
@@ -131,6 +149,13 @@ pdump_register_rx_callbacks(uint16_t end_q, uint16_t port, uint16_t queue,
for (; qid < end_q; qid++) {
cbs = &rx_cbs[port][qid];
if (cbs && operation == ENABLE) {
+ struct timeval now;
+
+ rte_eth_read_clock(port, &start_cycles);
+ rte_eth_get_clock_freq(port, &hz);
+ gettimeofday(&now, NULL);
+ start_time = now.tv_sec * NS_PER_S + now.tv_usec * 1000;
+
if (cbs->cb) {
PDUMP_LOG(ERR,
"failed to add rx callback for port=%d "
--
2.17.1
next prev parent reply other threads:[~2020-07-24 20:24 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-24 20:23 [dpdk-dev] [[PATCH v3 0/4] pdump HW Rx timestamps for mlx5 Patrick Keroulas
2020-07-24 20:23 ` [dpdk-dev] [[PATCH v3 1/4] net/mlx5: query device frequency Patrick Keroulas
2020-07-24 20:23 ` [dpdk-dev] [[PATCH v3 2/4] ethdev: add API to " Patrick Keroulas
2020-07-24 20:23 ` Patrick Keroulas [this message]
2020-09-02 15:41 ` [dpdk-dev] [[PATCH v3 3/4] pdump: convert timestamp to nanoseconds on Rx path Pattan, Reshma
2020-07-24 20:23 ` [dpdk-dev] [[PATCH v3 4/4] net/pcap: support hardware Tx timestamps Patrick Keroulas
2020-07-25 8:35 ` Tom Barbette
2020-07-25 11:51 ` Stephen Hemminger
2020-07-26 22:17 ` Stephen Hemminger
2020-10-06 16:25 ` [dpdk-dev] [[PATCH v3 0/4] pdump HW Rx timestamps for mlx5 Ferruh Yigit
2020-10-07 6:59 ` Morten Brørup
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