MEDIUM: receivers: add an rx_unbind() method in the protocols
This is used as a generic way to unbind a receiver at the end of
do_unbind_listener(). This allows to considerably simplify that function
since we can now let the protocol perform the cleanup. The generic code
was moved to sock.c, along with the conditional rx_disable() call. Now
the code also supports that the ->disable() function of the protocol
which acts on the listener performs the close itself and adjusts the
RX_F_BUOND flag accordingly.
diff --git a/src/proto_sockpair.c b/src/proto_sockpair.c
index f43aa82..9eac2cc 100644
--- a/src/proto_sockpair.c
+++ b/src/proto_sockpair.c
@@ -72,6 +72,7 @@
.listen = sockpair_bind_listener,
.enable = sockpair_enable_listener,
.disable = sockpair_disable_listener,
+ .rx_unbind = sock_unbind,
.rx_enable = sock_enable,
.rx_disable = sock_disable,
.accept = &listener_accept,