[dpdk-dev] [RFC][PATCH v2 0/3] pdump HW timestamps for mlx5
Patrick Keroulas
patrick.keroulas at radio-canada.ca
Thu Jun 11 17:16:07 CEST 2020
The intention is to produce a pcap with nanosecond precision when
timestamp offloading is activated on mlx5 NIC.
The packets forwarded by testpmd hold the raw counter but a pcap
requires a time unit. Assuming that the NIC clock is already synced
with external master clock, this patchset simply integrates the
nanosecond converter that is already implemented by ibverbs.
RFC:
The conversion is performed in Rx callback, in primary process because
the required clock info carried by ibv_context is not shared with
secundary process (pdump). Thus mbuf->timestamp is the chosen candidate
to convey the nanoseconds to pdump, since doc says: "unit and time
reference are not normalized but are always the same for a given port"
Patrick Keroulas (3):
net/mlx5: add counter-to-ns converter from libibverbs
ethdev: add API to convert raw timestamps to nsec
net/pcap: dump hardware timestamps
drivers/common/mlx5/linux/mlx5_glue.c | 16 +++++++++++
drivers/common/mlx5/linux/mlx5_glue.h | 4 +++
drivers/net/mlx5/mlx5.c | 1 +
drivers/net/mlx5/mlx5.h | 1 +
drivers/net/mlx5/mlx5_ethdev.c | 30 ++++++++++++++++++++
drivers/net/pcap/rte_eth_pcap.c | 35 +++++++++++++-----------
lib/librte_ethdev/rte_ethdev.c | 12 ++++++++
lib/librte_ethdev/rte_ethdev.h | 17 ++++++++++++
lib/librte_ethdev/rte_ethdev_core.h | 5 ++++
lib/librte_ethdev/rte_ethdev_version.map | 2 ++
lib/librte_mbuf/rte_mbuf_core.h | 3 +-
lib/librte_pdump/rte_pdump.c | 14 +++++++++-
12 files changed, 122 insertions(+), 18 deletions(-)
--
2.17.1
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