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author | Jakub Kicinski <kuba@kernel.org> | 2022-10-03 17:14:56 -0700 |
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committer | Jakub Kicinski <kuba@kernel.org> | 2022-10-03 17:14:57 -0700 |
commit | 46a275a5616736cbe70012311bc9003817e96b51 (patch) | |
tree | 2dc529211ff21257012365cbbad862f562a6cca8 /net/devres.c | |
parent | 899b8cd0d3922f57176f5a7f552ce93d8a5cd90b (diff) | |
parent | ae15ed6e40c9623e3a295a76cb164b4d3564a20b (diff) | |
download | linux-46a275a5616736cbe70012311bc9003817e96b51.tar.bz2 |
Merge branch 'net-marvell-prestera-add-nexthop-routes-offloading'
Yevhen Orlov says:
====================
net: marvell: prestera: add nexthop routes offloading
Add support for nexthop routes for Marvell Prestera driver.
Subscribe on NEIGH_UPDATE events.
Add features:
- Support connected route adding
e.g.: "ip address add 1.1.1.1/24 dev sw1p1"
e.g.: "ip route add 6.6.6/24 dev sw1p1"
- Support nexthop route adding
e.g.: "ip route add 5.5.5/24 via 1.1.1.2"
- Support ECMP route adding
e.g.: "ip route add 5.5.5/24 nexthop via 1.1.1.2 nexthop via 1.1.1.3"
- Support "offload" and "trap" flags per each nexthop
- Support "offload" flag for neighbours
Limitations:
- Only "local" and "main" tables supported
- Only generic interfaces supported for router (no bridges or vlans)
Flags meaning:
ip route add 5.5.5/24 nexthop via 2.2.2.2 nexthop via 2.2.2.3
ip route show
...
5.5.5.0/24 rt_offload
nexthop via 2.2.2.2 dev sw1p31 weight 1 trap
nexthop via 2.2.2.3 dev sw1p31 weight 1 trap
...
# When you just add route - lpm entry became occupied
# in HW ("rt_offload" flag), but related to nexthops neighbours
# still not resolved ("trap" flag).
#
# After some time...
ip route show
...
5.5.5.0/24 rt_offload
nexthop via 2.2.2.2 dev sw1p31 weight 1 offload
nexthop via 2.2.2.3 dev sw1p31 weight 1 offload
...
# You will see, that appropriate neighbours was resolved and nexthop
# entries occupied in HW too ("offload" flag)
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>
Changes for v2:
* Add more reviewers in CC
* Check if route nexthop or direct with fib_nh_gw_family instead of fib_nh_scope
This is needed after,
747c14307214 ("ip: fix dflt addr selection for connected nexthop"),
because direct route is now with the same scope as nexthop (RT_SCOPE_LINK)
Changes for v3:
* Resolve "unused functions" warnings, after
patch ("net: marvell: prestera: Add heplers to interact ... "), and before
patch ("net: marvell: prestera: Add neighbour cache accounting")
Changes for v4:
* Rebase to the latest master to resolve patch applying issues
Changes for v5:
* Repack structures to prevent holes
* Remove unused variables
* Fix misspeling issues
Changes for v6:
* Rebase on top of master
* Fix smatch warnings
Changes for v7:
* Rebase on top of master
* Refactor: use "fib_lookup" instead of "fib_new_table"+"fib_table_lookup",
according to Paolo Abeni suggestion
* Refactor: use "rhashtable_free_and_destroy" instead of rhashtable
walk, according to Paolo Abeni suggestion
====================
Link: https://lore.kernel.org/r/20221001093417.22388-1-yevhen.orlov@plvision.eu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/devres.c')
0 files changed, 0 insertions, 0 deletions