[UNIKRAFT PATCH v4 0/3] Poll based receive based on uk_netdev features

[Sharan Santhanam <sharan.santhanam@xxxxxxxxx>]

uk_netdev_info provides a way to forward driver information to the network 
stack.
We extend the uk_netdev_info with the features field that allows the network 
stack
to perform a poll based received on those driver that do not support interrupt 
based
receive. The patch series is structured as follows:
- The uk_netdev structure allocates network stack scratch pad.
- The uk_netdev_info provides features field to fetch information on the 
feature supported
  on a driver.

Changes since v3:
- Enable secondary expansion for all library local variable

Changes since v2:
- Enable secondary expansion on the build system
- Decouple from the tap driver
- Add some more comments 

Change since v1:
- Select the max of the scratch size
- Rename from enabled to available for the features

Sharan Santhanam (3):
  build: Enable secondary expansion
  lib/uknetdev: Save nw_stack data in a netdevice
  lib/uknetdev: Get feature supported on uk_netdev

 Makefile                              |   3 +
 lib/uknetdev/Makefile.rules           |  17 ++++++
 lib/uknetdev/include/uk/netdev_core.h |  19 ++++++
 plat/drivers/virtio/virtio_net.c      |   1 +
 support/build/Makefile.rules          | 112 +++++++++++++++++-----------------
 5 files changed, 96 insertions(+), 56 deletions(-)
 create mode 100644 lib/uknetdev/Makefile.rules

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2.7.4