rxrpc: Fix two connection reaping bugs

Fix two connection reaping bugs:

 (1) rxrpc_connection_expiry is in units of seconds, so
     rxrpc_disconnect_call() needs to multiply it by HZ when adding it to
     jiffies.

 (2) rxrpc_client_conn_reap_timeout() should set RXRPC_CLIENT_REAP_TIMER if
     local->kill_all_client_conns is clear, not if it is set (in which case
     we don't need the timer).  Without this, old client connections don't
     get cleaned up until the local endpoint is cleaned up.

Fixes: 5040011d ("rxrpc: Make the local endpoint hold a ref on a connected call")
Fixes: 0d6bf319 ("rxrpc: Move the client conn cache management to the I/O thread")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/783911.1698364174@warthog.procyon.org.ukSigned-off-by: Jakub Kicinski <kuba@kernel.org>

net/rxrpc/conn_object.c

@@ -212,7 +212,7 @@ void rxrpc_disconnect_call(struct rxrpc_call *call)
 		conn->idle_timestamp = jiffies;
 		if (atomic_dec_and_test(&conn->active))
 			rxrpc_set_service_reap_timer(conn->rxnet,
-						     jiffies + rxrpc_connection_expiry);
+						     jiffies + rxrpc_connection_expiry * HZ);
 	}
 
 	rxrpc_put_call(call, rxrpc_call_put_io_thread);

net/rxrpc/local_object.c

@@ -87,7 +87,7 @@ static void rxrpc_client_conn_reap_timeout(struct timer_list *timer)
 	struct rxrpc_local *local =
 		container_of(timer, struct rxrpc_local, client_conn_reap_timer);
 
-	if (local->kill_all_client_conns &&
+	if (!local->kill_all_client_conns &&
 	    test_and_set_bit(RXRPC_CLIENT_CONN_REAP_TIMER, &local->client_conn_flags))
 		rxrpc_wake_up_io_thread(local);
 }