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Diffstat (limited to 'doc/guides/nics/tap.rst')
| -rw-r--r-- | doc/guides/nics/tap.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/doc/guides/nics/tap.rst b/doc/guides/nics/tap.rst index 27148681..9a3d7b34 100644 --- a/doc/guides/nics/tap.rst +++ b/doc/guides/nics/tap.rst @@ -152,6 +152,22 @@ Distribute IPv4 TCP packets using RSS to a given MAC address over queues 0-3:: testpmd> flow create 0 priority 4 ingress pattern eth dst is 0a:0b:0c:0d:0e:0f \ / ipv4 / tcp / end actions rss queues 0 1 2 3 end / end +Multi-process sharing +--------------------- + +It is possible to attach an existing TAP device in a secondary process, +by declaring it as a vdev with the same name as in the primary process, +and without any parameter. + +The port attached in a secondary process will give access to the +statistics and the queues. +Therefore it can be used for monitoring or Rx/Tx processing. + +The IPC synchronization of Rx/Tx queues is currently limited: + + - Maximum 8 queues shared + - Synchronized on probing, but not on later port update + Example ------- |