[v3,0/6] checking for owned ports in portmask
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Message ID 20200402171953.13356-1-stephen@networkplumber.org
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  • checking for owned ports in portmask
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Stephen Hemminger April 2, 2020, 5:19 p.m. UTC
The failsafe, bonding, and netvsc PMD use eth dev port ownership
to control sub devices. These sub devices are hidden in the
normal iteration over ports but some applications use a direct
port mask.  In these cases, user may still (incorrectly) try
to directly use the sub devices.

This patch set changes the rte_eth_dev_owner_get function
so that it can be used to test for any ownership.
And the follow on patches use that.

An alternative proposed in earlier discussion is to have
each application try and own the port. But this solution would
be more invasive, and does not handle the case if secondary process
exits prematurely without releasing ownership. It makes more
sense to keep the concept of ownership as strictly part of
the device model and not part of the application layer.

v3 - use rte_eth_dev_owner_get directly, and change the function return
     rework port setup in tep_termination example
v2 - rename the helper function and use rte_eth_dev_owner_get

Stephen Hemminger (6):
  rte_ethdev: change rte_eth_dev_owner_get to return error if unowned
  examples/l2fwd-cat: make applicaton aware of port ownership
  examples/l3fwd: make applicaton aware of port ownership
  examples/l3fwd-acl: make applicaton aware of port ownership
  examples/l3fwd-power: make applicaton aware of port ownership
  examples/tep_termination: rework the port setup logic

 drivers/net/failsafe/failsafe_eal.c  |  4 +-
 drivers/net/netvsc/hn_vf.c           | 11 ++---
 examples/l2fwd-cat/Makefile          |  2 +
 examples/l2fwd-cat/l2fwd-cat.c       |  3 ++
 examples/l2fwd-cat/meson.build       |  1 +
 examples/l3fwd-acl/Makefile          |  3 ++
 examples/l3fwd-acl/main.c            |  4 ++
 examples/l3fwd-acl/meson.build       |  1 +
 examples/l3fwd-power/main.c          |  4 ++
 examples/l3fwd/Makefile              |  3 ++
 examples/l3fwd/main.c                |  5 ++
 examples/l3fwd/meson.build           |  1 +
 examples/tep_termination/Makefile    |  2 +
 examples/tep_termination/main.c      | 70 ++++++++++------------------
 examples/tep_termination/meson.build |  1 +
 lib/librte_ethdev/rte_ethdev.c       |  4 +-
 lib/librte_ethdev/rte_ethdev.h       |  6 ++-
 17 files changed, 69 insertions(+), 56 deletions(-)