diff options
| author |   Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2018-06-01 09:09:08 +0200 |
|---|---|---|
| committer | Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2018-06-01 09:12:07 +0200 |
| commit | 1bd9b61222f3a81ffe770fc00b70ded6e760c42b (patch) | |
| tree | 0bf7d996cf0664796687c1be6d22958fcf6a8096 /doc/guides/prog_guide/event_ethernet_rx_adapter.rst | |
| parent | bb4e158029645f37809fcf81a3acddd6fa11f88a (diff) | |
New upstream version 18.05
Change-Id: Icd4170ddc4f63aeae5d0559490e5195b5349f9c2
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'doc/guides/prog_guide/event_ethernet_rx_adapter.rst')
| -rw-r--r-- | doc/guides/prog_guide/event_ethernet_rx_adapter.rst | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst index 4ab87a37..319e4f05 100644 --- a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst +++ b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst @@ -12,7 +12,11 @@ be supported in hardware or require a software thread to receive packets from the ethdev port using ethdev poll mode APIs and enqueue these as events to the event device using the eventdev API. Both transfer mechanisms may be present on the same platform depending on the particular combination of the ethdev and -the event device. +the event device. For SW based packet transfer, if the mbuf does not have a +timestamp set, the adapter adds a timestamp to the mbuf using +rte_get_tsc_cycles(), this provides a more accurate timestamp as compared to +if the application were to set the timestamp since it avoids event device +schedule latency. The Event Ethernet Rx Adapter library is intended for the application code to configure both transfer mechanisms using a common API. A capability API allows |