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From: Thomas Monjalon <thomas@monjalon.net>
To: dev@dpdk.org
Cc: ferruh.yigit@intel.com, david.marchand@redhat.com,
bruce.richardson@intel.com, olivier.matz@6wind.com,
andrew.rybchenko@oktetlabs.ru, jerinj@marvell.com, viacheslavo@nvidia.com,
John McNamara <john.mcnamara@intel.com>
Date: Sun, 1 Nov 2020 19:06:25 +0100
Message-Id: <20201101180626.2198868-14-thomas@monjalon.net>
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<20201101180626.2198868-1-thomas@monjalon.net>
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Subject: [dpdk-dev] [PATCH v2 13/14] examples/rxtx_callbacks: switch
timestamp to dynamic field
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The mbuf timestamp is moved to a dynamic field
in order to allow removal of the deprecated static field.
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
---
examples/rxtx_callbacks/main.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/examples/rxtx_callbacks/main.c b/examples/rxtx_callbacks/main.c
index 1a8e7d47d9..b1869a5ce8 100644
--- a/examples/rxtx_callbacks/main.c
+++ b/examples/rxtx_callbacks/main.c
@@ -19,6 +19,15 @@
#define MBUF_CACHE_SIZE 250
#define BURST_SIZE 32
+static int hwts_dynfield_offset = -1;
+
+static inline rte_mbuf_timestamp_t *
+hwts_field(struct rte_mbuf *mbuf)
+{
+ return RTE_MBUF_DYNFIELD(mbuf,
+ hwts_dynfield_offset, rte_mbuf_timestamp_t *);
+}
+
typedef uint64_t tsc_t;
static int tsc_dynfield_offset = -1;
@@ -77,7 +86,7 @@ calc_latency(uint16_t port, uint16_t qidx __rte_unused,
for (i = 0; i < nb_pkts; i++) {
cycles += now - *tsc_field(pkts[i]);
if (hw_timestamping)
- queue_ticks += ticks - pkts[i]->timestamp;
+ queue_ticks += ticks - *hwts_field(pkts[i]);
}
latency_numbers.total_cycles += cycles;
@@ -141,6 +150,12 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool)
return -1;
}
port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_TIMESTAMP;
+ hwts_dynfield_offset = rte_mbuf_dynfield_lookup(
+ RTE_MBUF_DYNFIELD_TIMESTAMP_NAME, NULL);
+ if (hwts_dynfield_offset < 0) {
+ printf("ERROR: Failed to lookup timestamp field\n");
+ return -rte_errno;
+ }
}
retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
--
2.28.0