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netmgr refactoring: use generic functions when operating on sockets.

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tcpdns used transport-specific functions to operate on the outer socket.
Use generic ones instead, and select the proper call in netmgr.c.
Make the missing functions (e.g. isc_nm_read) generic and add type-specific
calls (isc__nm_tcp_read). This is the preparation for netmgr TLS layer.
This commit is contained in:
Witold Kręcicki
2020-03-20 11:55:10 +01:00
committed by Witold Krecicki
parent aed3927592
commit 5fedd21e16
8 changed files with 114 additions and 41 deletions
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38
lib/isc/netmgr/netmgr-int.h
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@@ -124,6 +124,8 @@ struct isc_nmiface {
typedef enum isc__netievent_type {
netievent_udpsend,
netievent_udprecv,
netievent_udpstop,
netievent_tcpconnect,
netievent_tcpsend,
netievent_tcprecv,
@@ -131,13 +133,13 @@ typedef enum isc__netievent_type {
netievent_tcppauseread,
netievent_tcpchildlisten,
netievent_tcpchildstop,
netievent_closecb,
netievent_shutdown,
netievent_stop,
netievent_udpstop,
netievent_tcpstop,
netievent_tcpclose,
netievent_tcpdnsclose,
netievent_closecb,
netievent_shutdown,
netievent_stop,
netievent_prio = 0xff, /* event type values higher than this
* will be treated as high-priority
* events, which can be processed
@@ -647,6 +649,9 @@ isc__nm_udp_send(isc_nmhandle_t *handle, isc_region_t *region, isc_nm_cb_t cb,
* Back-end implementation of isc_nm_send() for UDP handles.
*/
void
isc__nm_udp_stoplistening(isc_nmsocket_t *sock);
void
isc__nm_async_udplisten(isc__networker_t *worker, isc__netievent_t *ev0);
@@ -665,11 +670,26 @@ isc__nm_tcp_send(isc_nmhandle_t *handle, isc_region_t *region, isc_nm_cb_t cb,
* Back-end implementation of isc_nm_send() for TCP handles.
*/
isc_result_t
isc__nm_tcp_read(isc_nmhandle_t *handle, isc_nm_recv_cb_t cb, void *cbarg);
void
isc__nm_tcp_close(isc_nmsocket_t *sock);
/*%<
* Close a TCP socket.
*/
isc_result_t
isc__nm_tcp_pauseread(isc_nmsocket_t *sock);
/*%<
* Pause reading on this socket, while still remembering the callback.
*/
isc_result_t
isc__nm_tcp_resumeread(isc_nmsocket_t *sock);
/*%<
* Resume reading from socket.
*
*/
void
isc__nm_tcp_shutdown(isc_nmsocket_t *sock);
@@ -677,6 +697,9 @@ isc__nm_tcp_shutdown(isc_nmsocket_t *sock);
* Called on shutdown to close and clean up a listening TCP socket.
*/
void
isc__nm_tcp_stoplistening(isc_nmsocket_t *sock);
void
isc__nm_async_tcpconnect(isc__networker_t *worker, isc__netievent_t *ev0);
void
@@ -694,6 +717,10 @@ isc__nm_async_startread(isc__networker_t *worker, isc__netievent_t *ev0);
void
isc__nm_async_pauseread(isc__networker_t *worker, isc__netievent_t *ev0);
void
isc__nm_async_tcp_startread(isc__networker_t *worker, isc__netievent_t *ev0);
void
isc__nm_async_tcp_pauseread(isc__networker_t *worker, isc__netievent_t *ev0);
void
isc__nm_async_tcpclose(isc__networker_t *worker, isc__netievent_t *ev0);
/*%<
* Callback handlers for asynchronous TCP events (connect, listen,
@@ -713,6 +740,9 @@ isc__nm_tcpdns_close(isc_nmsocket_t *sock);
* Close a TCPDNS socket.
*/
void
isc__nm_tcpdns_stoplistening(isc_nmsocket_t *sock);
void
isc__nm_async_tcpdnsclose(isc__networker_t *worker, isc__netievent_t *ev0);