Commits
Merge branch 'bpf-sockmap-fixes' John Fastabend says: ==================== A set of fixes for sockmap to resolve programs referencing sockmaps and closing without deleting all entries in the map and/or not detaching BPF programs attached to the map. Both leaving entries in the map and not detaching programs may result in the map failing to be removed by BPF infrastructure due to reference counts never reaching zero. For this we pull in the ULP infrastructure to hook into the close() hook of the sock layer. This seemed natural because we have additional sockmap features (to add support for TX hooks) that will also use the ULP infrastructure. This allows us to cleanup entries in the map when socks are closed() and avoid trying to get the sk_state_change() hook to fire in all cases. The second issue resolved here occurs when users don't detach programs. The gist is a refcnt issue resolved by implementing the release callback. See patch for details. For testing I ran both sample/sockmap and selftests bpf/test_maps.c. Dave Watson ran TLS test suite on v1 version of the patches without the put_module error path change. v4 fix missing rcu_unlock() v3 wrap psock reference in RCU v2 changes rebased onto bpf-next with small update adding module_put ==================== Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
