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MEDIUM: stream-interface: provide a generic stream_int_chk_snd_conn() function

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This one can be used by both sock_raw and sock_ssl instead of each having their own.
This commit is contained in:
Willy Tarreau 2012-08-20 15:01:10 +02:00 committed by Willy Tarreau
parent fae4499e36
commit de5722c302
3 changed files with 101 additions and 101 deletions
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1
include/proto/stream_interface.h
View File

@ -40,6 +40,7 @@ void stream_int_update_conn(struct stream_interface *si);
int stream_int_shutr(struct stream_interface *si);
int stream_int_shutw(struct stream_interface *si);
void stream_int_chk_rcv_conn(struct stream_interface *si);
void stream_int_chk_snd_conn(struct stream_interface *si);
extern struct sock_ops stream_int_embedded;
extern struct sock_ops stream_int_task;

102
src/sock_raw.c
View File

@ -46,7 +46,6 @@
static void sock_raw_read(struct connection *conn);
static void sock_raw_write(struct connection *conn);
static void sock_raw_read0(struct stream_interface *si);
static void sock_raw_chk_snd(struct stream_interface *si);
#if defined(CONFIG_HAP_LINUX_SPLICE)
@ -674,112 +673,13 @@ static void sock_raw_read0(struct stream_interface *si)
return;
}
/* This function is used for inter-stream-interface calls. It is called by the
* producer to inform the consumer side that it may be interested in checking
* for data in the buffer. Note that it intentionally does not update timeouts,
* so that we can still check them later at wake-up.
*/
static void sock_raw_chk_snd(struct stream_interface *si)
{
struct buffer *ob = si->ob;
DPRINTF(stderr,"[%u] %s: fd=%d owner=%p ib=%p, ob=%p, exp(r,w)=%u,%u ibf=%08x obf=%08x ibh=%d ibt=%d obh=%d obd=%d si=%d\n",
now_ms, __FUNCTION__,
si_fd(si), fdtab[si_fd(si)].owner,
si->ib, ob,
si->ib->rex, ob->wex,
si->ib->flags, ob->flags,
si->ib->i, si->ib->o, ob->i, ob->o, si->state);
if (unlikely(si->state != SI_ST_EST || (ob->flags & BF_SHUTW)))
return;
if (unlikely(ob->flags & BF_OUT_EMPTY)) /* called with nothing to send ! */
return;
if (!ob->pipe && /* spliced data wants to be forwarded ASAP */
(!(si->flags & SI_FL_WAIT_DATA) || /* not waiting for data */
(fdtab[si_fd(si)].ev & FD_POLL_OUT))) /* we'll be called anyway */
return;
if (conn_data_snd_buf(&si->conn) < 0) {
/* Write error on the file descriptor. We mark the FD as STERROR so
* that we don't use it anymore and we notify the task.
*/
si->conn.flags |= CO_FL_ERROR;
fdtab[si_fd(si)].ev &= ~FD_POLL_STICKY;
conn_data_stop_both(&si->conn);
si->flags |= SI_FL_ERR;
goto out_wakeup;
}
/* OK, so now we know that some data might have been sent, and that we may
* have to poll first. We have to do that too if the buffer is not empty.
*/
if (ob->flags & BF_OUT_EMPTY) {
/* the connection is established but we can't write. Either the
* buffer is empty, or we just refrain from sending because the
* ->o limit was reached. Maybe we just wrote the last
* chunk and need to close.
*/
if (((ob->flags & (BF_SHUTW|BF_HIJACK|BF_AUTO_CLOSE|BF_SHUTW_NOW)) ==
(BF_AUTO_CLOSE|BF_SHUTW_NOW)) &&
(si->state == SI_ST_EST)) {
si_shutw(si);
goto out_wakeup;
}
if ((ob->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_FULL|BF_HIJACK)) == 0)
si->flags |= SI_FL_WAIT_DATA;
ob->wex = TICK_ETERNITY;
}
else {
/* Otherwise there are remaining data to be sent in the buffer,
* which means we have to poll before doing so.
*/
conn_data_want_send(&si->conn);
si->flags &= ~SI_FL_WAIT_DATA;
if (!tick_isset(ob->wex))
ob->wex = tick_add_ifset(now_ms, ob->wto);
}
if (likely(ob->flags & BF_WRITE_ACTIVITY)) {
/* update timeout if we have written something */
if ((ob->flags & (BF_OUT_EMPTY|BF_SHUTW|BF_WRITE_PARTIAL)) == BF_WRITE_PARTIAL)
ob->wex = tick_add_ifset(now_ms, ob->wto);
if (tick_isset(si->ib->rex) && !(si->flags & SI_FL_INDEP_STR)) {
/* Note: to prevent the client from expiring read timeouts
* during writes, we refresh it. We only do this if the
* interface is not configured for "independent streams",
* because for some applications it's better not to do this,
* for instance when continuously exchanging small amounts
* of data which can full the socket buffers long before a
* write timeout is detected.
*/
si->ib->rex = tick_add_ifset(now_ms, si->ib->rto);
}
}
/* in case of special condition (error, shutdown, end of write...), we
* have to notify the task.
*/
if (likely((ob->flags & (BF_WRITE_NULL|BF_WRITE_ERROR|BF_SHUTW)) ||
((ob->flags & BF_OUT_EMPTY) && !ob->to_forward) ||
si->state != SI_ST_EST)) {
out_wakeup:
if (!(si->flags & SI_FL_DONT_WAKE) && si->owner)
task_wakeup(si->owner, TASK_WOKEN_IO);
}
}
/* stream sock operations */
struct sock_ops sock_raw = {
.update = stream_int_update_conn,
.shutr = NULL,
.shutw = NULL,
.chk_rcv = stream_int_chk_rcv_conn,
.chk_snd = sock_raw_chk_snd,
.chk_snd = stream_int_chk_snd_conn,
.read = sock_raw_read,
.write = sock_raw_write,
.snd_buf = sock_raw_write_loop,

99
src/stream_interface.c
View File

@ -766,6 +766,105 @@ void stream_int_chk_rcv_conn(struct stream_interface *si)
}
/* This function is used for inter-stream-interface calls. It is called by the
* producer to inform the consumer side that it may be interested in checking
* for data in the buffer. Note that it intentionally does not update timeouts,
* so that we can still check them later at wake-up.
*/
void stream_int_chk_snd_conn(struct stream_interface *si)
{
struct buffer *ob = si->ob;
if (unlikely(si->state != SI_ST_EST || (ob->flags & BF_SHUTW)))
return;
/* handshake running on producer */
if (si->conn.flags & CO_FL_HANDSHAKE) {
/* a handshake is in progress */
si->flags &= ~SI_FL_WAIT_DATA;
return;
}
if (unlikely((ob->flags & BF_OUT_EMPTY))) /* called with nothing to send ! */
return;
if (!ob->pipe && /* spliced data wants to be forwarded ASAP */
(!(si->flags & SI_FL_WAIT_DATA) || /* not waiting for data */
(fdtab[si_fd(si)].ev & FD_POLL_OUT))) /* we'll be called anyway */
return;
if (conn_data_snd_buf(&si->conn) < 0) {
/* Write error on the file descriptor. We mark the FD as STERROR so
* that we don't use it anymore and we notify the task.
*/
fdtab[si_fd(si)].ev &= ~FD_POLL_STICKY;
conn_data_stop_both(&si->conn);
si->flags |= SI_FL_ERR;
si->conn.flags |= CO_FL_ERROR;
goto out_wakeup;
}
/* OK, so now we know that some data might have been sent, and that we may
* have to poll first. We have to do that too if the buffer is not empty.
*/
if (ob->flags & BF_OUT_EMPTY) {
/* the connection is established but we can't write. Either the
* buffer is empty, or we just refrain from sending because the
* ->o limit was reached. Maybe we just wrote the last
* chunk and need to close.
*/
if (((ob->flags & (BF_SHUTW|BF_HIJACK|BF_AUTO_CLOSE|BF_SHUTW_NOW)) ==
(BF_AUTO_CLOSE|BF_SHUTW_NOW)) &&
(si->state == SI_ST_EST)) {
si_shutw(si);
goto out_wakeup;
}
if ((ob->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_FULL|BF_HIJACK)) == 0)
si->flags |= SI_FL_WAIT_DATA;
ob->wex = TICK_ETERNITY;
}
else {
/* Otherwise there are remaining data to be sent in the buffer,
* which means we have to poll before doing so.
*/
conn_data_want_send(&si->conn);
si->flags &= ~SI_FL_WAIT_DATA;
if (!tick_isset(ob->wex))
ob->wex = tick_add_ifset(now_ms, ob->wto);
}
if (likely(ob->flags & BF_WRITE_ACTIVITY)) {
/* update timeout if we have written something */
if ((ob->flags & (BF_OUT_EMPTY|BF_SHUTW|BF_WRITE_PARTIAL)) == BF_WRITE_PARTIAL)
ob->wex = tick_add_ifset(now_ms, ob->wto);
if (tick_isset(si->ib->rex) && !(si->flags & SI_FL_INDEP_STR)) {
/* Note: to prevent the client from expiring read timeouts
* during writes, we refresh it. We only do this if the
* interface is not configured for "independent streams",
* because for some applications it's better not to do this,
* for instance when continuously exchanging small amounts
* of data which can full the socket buffers long before a
* write timeout is detected.
*/
si->ib->rex = tick_add_ifset(now_ms, si->ib->rto);
}
}
/* in case of special condition (error, shutdown, end of write...), we
* have to notify the task.
*/
if (likely((ob->flags & (BF_WRITE_NULL|BF_WRITE_ERROR|BF_SHUTW)) ||
((ob->flags & BF_OUT_EMPTY) && !ob->to_forward) ||
si->state != SI_ST_EST)) {
out_wakeup:
if (!(si->flags & SI_FL_DONT_WAKE) && si->owner)
task_wakeup(si->owner, TASK_WOKEN_IO);
}
}
/*
* Local variables:
* c-indent-level: 8