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MINOR: conn-stream: Add header file with util functions related to conn-streams

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cs_utils.h header file will contain all util functions related to the
conn_streams. For now, few functions were added, all are equivalent to SI
functions. Idea is to progressively replace SI functions by CS ones.
This commit is contained in:
Christopher Faulet 2022-03-25 15:21:46 +01:00
parent 3099511571
commit 1cf9ef25a9
1 changed files with 76 additions and 0 deletions
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include/haproxy/cs_utils.h Normal file
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/*
* include/haproxy/cs_utils.h
* This file contains conn-stream util functions prototypes
*
* Copyright 2022 Christopher Faulet <cfaulet@haproxy.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _HAPROXY_CS_UTILS_H
#define _HAPROXY_CS_UTILS_H
#include <haproxy/api.h>
#include <haproxy/buf-t.h>
#include <haproxy/channel-t.h>
#include <haproxy/stream-t.h>
#include <haproxy/task-t.h>
#include <haproxy/conn_stream.h>
/* returns the channel which receives data from this conn-stream (input channel) */
static inline struct channel *cs_ic(struct conn_stream *cs)
{
struct stream *strm = __cs_strm(cs);
return ((cs->flags & CS_FL_ISBACK) ? &(strm->res) : &(strm->req));
}
/* returns the channel which feeds data to this conn-stream (output channel) */
static inline struct channel *cs_oc(struct conn_stream *cs)
{
struct stream *strm = __cs_strm(cs);
return ((cs->flags & CS_FL_ISBACK) ? &(strm->req) : &(strm->res));
}
/* returns the buffer which receives data from this conn-stream (input channel's buffer) */
static inline struct buffer *cs_ib(struct conn_stream *cs)
{
return &cs_ic(cs)->buf;
}
/* returns the buffer which feeds data to this conn-stream (output channel's buffer) */
static inline struct buffer *cs_ob(struct conn_stream *cs)
{
return &cs_oc(cs)->buf;
}
/* returns the stream's task associated to this conn-stream */
static inline struct task *cs_strm_task(struct conn_stream *cs)
{
struct stream *strm = __cs_strm(cs);
return strm->task;
}
/* returns the conn-stream on the other side. Used during forwarding. */
static inline struct conn_stream *cs_opposite(struct conn_stream *cs)
{
struct stream *strm = __cs_strm(cs);
return ((cs->flags & CS_FL_ISBACK) ? strm->csf : strm->csb);
}
#endif /* _HAPROXY_CS_UTILS_H */