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: 5040011d073d ("rxrpc: Make the local endpoint hold a ref on a connected call")
Fixes: 0d6bf319bc5a ("rxrpc: Move the client conn cache management to the I/O thread")
Signed-off-by: David Howells <[e-mail]>
cc: Marc Dionne <[e-mail]>
cc: [e-mail]
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

net/rxrpc/conn_object.c

···
 		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

···
 	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);
 }