tree 5db483507dfbc4b82a8097cd1c6562f2a6c0f99a
parent f1ff4e80f848a2ea0622cbe2c72e44409ba90546
author Tuong Lien <tuong.t.lien@dektech.com.au> 1573189508 +0700
committer David S. Miller <davem@davemloft.net> 1573250519 -0800

tipc: add reference counter to bearer

As a need to support the crypto asynchronous operations in the later
commits, apart from the current RCU mechanism for bearer pointer, we
add a 'refcnt' to the bearer object as well.

So, a bearer can be hold via 'tipc_bearer_hold()' without being freed
even though the bearer or interface can be disabled in the meanwhile.
If that happens, the bearer will be released then when the crypto
operation is completed and 'tipc_bearer_put()' is called.

Acked-by: Ying Xue <ying.xue@windreiver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Tuong Lien <tuong.t.lien@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>