[UNIKRAFT/LWIP PATCH v4 0/5] Xen netfront support

[Simon Kuenzer <simon.kuenzer@xxxxxxxxx>]

The current changes are required for supporting netfront devices in
Unikraft. They basically add support for aligned packet buffer
allocations as required by netfront devices.

This patch series depends on the series 1560
(https://patchwork.unikraft.org/project/unikraft/list/?series=1560)
for the Unikraft base.

Changes since v3:
 Due to drastic changes of the Unikraft base,
 this is a rewrite of this patch series at v3.
 It applies:
 - Use ioalign field from uknetdev
 - Use aligned netbuf allocation helpers from lib/uknetdev
 - Make use of uknetdev scratch pad for device local fields

Changes since v2:
 - Use nb_align field for queue infos
 - First patch of v3 was already upstreamed

Costin Lupu (1):
  lwipopts.h: Disable Ethernet frame padding

Simon Kuenzer (4):
  uknetdev: Per device `lwip_data` to callbacks
  uknetdev: Per device RX/TX headroom
  netbuf: Aligned buffers with `lwip_alloc_netbuf()`
  uknetdev: Retrieve `ioalign` from device

 Config.uk         |  2 +-
 include/arch/cc.h |  4 ++-
 netbuf.c          | 26 ++++-----------
 netbuf.h          |  2 +-
 uknetdev.c        | 83 ++++++++++++++++++++++++++---------------------
 5 files changed, 57 insertions(+), 60 deletions(-)

-- 
2.20.1