mlxsw: spectrum_router: Increase scale of IPv6 nexthop groups

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Unlike IPv4, the kernel does not consolidate IPv6 nexthop groups. To
avoid exhausting the device's adjacency table - where nexthops are
stored - the driver does this consolidation instead.

Each nexthop group is hashed by XOR-ing the interface indexes of all the
member nexthop devices. However, the ifindex itself is not hashed, which
can result in identical keys used for different groups and finally an
-EBUSY error from rhashtable due to too long objects list.

Improve the situation by hashing the ifindex itself.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Ido Schimmel 2019-07-23 10:57:42 +03:00 • committed by David S. Miller

parent b06689cc1b

commit fc25996e6f

1 changed files with 2 additions and 2 deletions

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drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c

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