[PATCH net-next 0/3] dst_cache: cope with device removal

[Paolo Abeni <pabeni@redhat.com>]

Eric reported a net device refcount leak and diagnosed the root cause
as the dst_cache not coping well with the underlying device removal.

To address such issue, this series introduces the infrastructure to let
the existing uncached list handle the relevant cleanup.

Patch 1 and 2 are preparation changes to make the uncached list infra
more flexible for the new use-case, and patch 3 addresses the issue.

---
Targeting net-next as the addressed problem is quite ancient and I fear
some unexpected side effects for patch 2.

Paolo Abeni (3):
  ipv6: use a new flag to indicate elevated refcount.
  ipv4: obsolete routes moved out of per cpu cache
  dst_cache: let rt_uncached cope with dst_cache cleanup

 include/net/ip6_fib.h | 3 +++
 net/core/dst_cache.c  | 8 ++++++++
 net/ipv4/route.c      | 2 +-
 net/ipv6/route.c      | 4 ++--
 4 files changed, 14 insertions(+), 3 deletions(-)

-- 
2.43.2