Add support for blackhole and local routes for Marvell Prestera driver.
Subscribe on fib notifications and handle add/del.

Add features:
 - Support route adding.
   e.g.: "ip route add blackhole 7.7.1.1/24"
   e.g.: "ip route add local 9.9.9.9 dev sw1p30"
 - Support "rt_trap", "rt_offload", "rt_offload_failed" flags
 - Handle case, when route in "local" table overlaps route in "main" table
   example:
	ip ro add blackhole 7.7.7.7
	ip ro add local 7.7.7.7 dev sw1p30
	# blackhole route will be deoffloaded. rt_offload flag disappeared

Limitations:
 - Only "blackhole" and "local" routes supported. "nexthop" routes is TRAP
   for now and will be implemented soon.
 - Only "local" and "main" tables supported

Co-developed-by: Taras Chornyi <tchornyi@marvell.com>
Signed-off-by: Taras Chornyi <tchornyi@marvell.com>
Co-developed-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Yevhen Orlov <yevhen.orlov@plvision.eu>

Yevhen Orlov (3):
  net: marvell: prestera: Add router LPM ABI
  net: marvell: prestera: add hardware router objects accounting for lpm
  net: marvell: prestera: handle fib notifications

 .../net/ethernet/marvell/prestera/prestera.h  |   5 +
 .../ethernet/marvell/prestera/prestera_hw.c   |  49 +++
 .../ethernet/marvell/prestera/prestera_hw.h   |   6 +
 .../ethernet/marvell/prestera/prestera_main.c |  11 +
 .../marvell/prestera/prestera_router.c        | 412 ++++++++++++++++++
 .../marvell/prestera/prestera_router_hw.c     | 132 +++++-
 .../marvell/prestera/prestera_router_hw.h     |  44 ++
 7 files changed, 652 insertions(+), 7 deletions(-)

-- 
2.17.1

Hello:

This series was applied to netdev/net-next.git (master)
by David S. Miller <davem@davemloft.net>:

On Wed, 16 Feb 2022 03:05:54 +0200 you wrote:
> Add support for blackhole and local routes for Marvell Prestera driver.
> Subscribe on fib notifications and handle add/del.
> 
> Add features:
>  - Support route adding.
>    e.g.: "ip route add blackhole 7.7.1.1/24"
>    e.g.: "ip route add local 9.9.9.9 dev sw1p30"
>  - Support "rt_trap", "rt_offload", "rt_offload_failed" flags
>  - Handle case, when route in "local" table overlaps route in "main" table
>    example:
> 	ip ro add blackhole 7.7.7.7
> 	ip ro add local 7.7.7.7 dev sw1p30
> 	# blackhole route will be deoffloaded. rt_offload flag disappeared
> 
> [...]

Here is the summary with links:
  - [net-next,1/3] net: marvell: prestera: Add router LPM ABI
    https://git.kernel.org/netdev/net-next/c/19787b93f814
  - [net-next,2/3] net: marvell: prestera: add hardware router objects accounting for lpm
    https://git.kernel.org/netdev/net-next/c/16de3db1208a
  - [net-next,3/3] net: marvell: prestera: handle fib notifications
    https://git.kernel.org/netdev/net-next/c/4394fbcb78cf

You are awesome, thank you!
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