[PATCH v5 0/3] runtime queue setup

[Qi Zhang <qi.z.zhang@intel.com>]

v6:
- fix tx queue state check in rte_eth_rx_queue_setup
- fix error message in testpmd.

v5:
- fix first tx queue check in i40e.

v4:
- fix i40e rx/tx funciton conflict handle.
- no need conflict check for first rx/tx queue at runtime setup.
- fix missing offload paramter in testpmd cmdline.

v3:
- not overload deferred start.
- rename deferred setup to runtime setup.
- remove unecessary testpmd parameters (patch 2/4 of v2)
- add offload support to testpmd queue setup command line
- i40e fix: return fail when required rx/tx function conflict with
  exist setup.

v2:
- enhance comment in rte_ethdev.h

According to exist implementation,rte_eth_[rx|tx]_queue_setup will
always return fail if device is already started(rte_eth_dev_start).

This can't satisfied the usage when application want to deferred setup
part of the queues while keep traffic running on those queues already
be setup.

example:
rte_eth_dev_config(nb_rxq = 2, nb_txq =2)
rte_eth_rx_queue_setup(idx = 0 ...)
rte_eth_rx_queue_setup(idx = 0 ...)
rte_eth_dev_start(...) /* [rx|tx]_burst is ready to start on queue 0 */
rte_eth_rx_queue_setup(idx=1 ...) /* fail*/

Basically this is not a general hardware limitation, because for NIC
like i40e, ixgbe, it is not necessary to stop the whole device before
configure a fresh queue or reconfigure an exist queue with no traffic
on it.

The patch let etherdev driver expose the capability flag through
rte_eth_dev_info_get when it support deferred queue configuraiton,
then base on these flag, rte_eth_[rx|tx]_queue_setup could decide
continue to setup the queue or just return fail when device already
started.


Qi Zhang (3):
  ether: support runtime queue setup
  app/testpmd: add command for queue setup
  net/i40e: enable runtime queue setup

 app/test-pmd/cmdline.c                      | 129 ++++++++++++++++++++
 doc/guides/nics/features.rst                |   8 ++
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |   7 ++
 drivers/net/i40e/i40e_ethdev.c              |   4 +
 drivers/net/i40e/i40e_rxtx.c                | 183 ++++++++++++++++++++++++----
 lib/librte_ether/rte_ethdev.c               |  30 +++--
 lib/librte_ether/rte_ethdev.h               |   7 ++
 7 files changed, 333 insertions(+), 35 deletions(-)

-- 
2.13.6