nexthop: Only emit a notification when nexthop is actually deleted

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Currently, the in-kernel delete notification is emitted from the error
path of nexthop_add() and replace_nexthop(), which can be confusing to
in-kernel listeners as they are not familiar with the nexthop.

Instead, only emit the notification when the nexthop is actually
deleted. The following sub-cases are covered:

1. User space deletes the nexthop
2. The nexthop is deleted by the kernel due to a netdev event (e.g.,
   nexthop device going down)
3. A group is deleted because its last nexthop is being deleted
4. The network namespace of the nexthop device is deleted

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Ido Schimmel 2020-09-15 14:41:02 +03:00 • committed by David S. Miller

parent 80690ec6b5

commit 0695564bb4

1 changed files with 2 additions and 2 deletions

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net/ipv4/nexthop.c

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