[PATCH v4 0/3] Add IPv6 Network Discovery

[emohandesi at linux.microsoft.com]

From: Ehsan Mohandesi <emohandesi at linux.microsoft.com>

This series adds IPv6 network discovery to U-Boot. When an IPv6 command is
run in U-Boot, it sends a router solicitation (RS) message to the network.
The router on the network responds with a router advertisement (RA)
message. Then U-Boot processes the RA message and sets the gatewayip6 and
net_prefix_length environment variables.
It is based on RFC 4861, but not everything in the RFC is supported here.
https://www.rfc-editor.org/rfc/rfc4861

Changes in v4:
- Removed the changes that were mistakenly pulled from the local workspace.

Changes in v3:
- Removed the extra revert commit that was mistakenly added in v2.

Changes in v2:
- Improved IPv6 network discovery code.
- Added IPv6 network discovery feature test (Python test).
- Added unit tests (C code).

Ehsan Mohandesi (3):
  net: ipv6: Add support for default gateway discovery.
  test/py: IPv6 network discovery test
  test: eth: IPv6 network discovery unit test

 cmd/Kconfig                        |   6 +
 configs/sandbox64_defconfig        |   2 +
 configs/sandbox_defconfig          |   2 +
 configs/sandbox_flattree_defconfig |   2 +
 include/ndisc.h                    |  35 ++++++
 include/net.h                      |   2 +-
 include/net6.h                     |  40 ++++++
 net/ndisc.c                        | 243 +++++++++++++++++++++++++++++++++++--
 net/net.c                          |  23 +++-
 net/net6.c                         |   1 +
 test/dm/eth.c                      |  88 ++++++++++++++
 test/py/tests/test_net.py          |  31 ++++-
 12 files changed, 462 insertions(+), 13 deletions(-)

-- 
1.8.3.1