rxrpc: Fix the rxrpc_connection attend queue handling

The rxrpc_connection attend queue is never used because conn::attend_link
is never initialised and so is always NULL'd out and thus always appears to
be busy.  This requires the following fix:

 (1) Fix this the attend queue problem by initialising conn::attend_link.

And, consequently, two further fixes for things masked by the above bug:

 (2) Fix rxrpc_input_conn_event() to handle being invoked with a NULL
     sk_buff pointer - something that can now happen with the above change.

 (3) Fix the RXRPC_SKB_MARK_SERVICE_CONN_SECURED message to carry a pointer
     to the connection and a ref on it.

Signed-off-by: David Howells <[email protected]>
cc: Marc Dionne <[email protected]>
cc: Jakub Kicinski <[email protected]>
cc: "David S. Miller" <[email protected]>
cc: Eric Dumazet <[email protected]>
cc: Paolo Abeni <[email protected]>
cc: Simon Horman <[email protected]>
cc: [email protected]
cc: [email protected]
Fixes: f2cce89a074e ("rxrpc: Implement a mechanism to send an event notification to a connection")
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>

0 files changed, 0 insertions, 0 deletions