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/*
* include/haproxy/receiver-t.h
* This file defines the structures needed to manage receivers.
*
* Copyright (C) 2000-2020 Willy Tarreau - w@1wt.eu
*
* 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_RECEIVER_T_H
#define _HAPROXY_RECEIVER_T_H
#include <sys/types.h>
#include <sys/socket.h>
#include <haproxy/api-t.h>
#include <haproxy/namespace-t.h>
#include <haproxy/proto_rhttp-t.h>
#include <haproxy/quic_sock-t.h>
#include <haproxy/thread.h>
/* Bit values for receiver->flags */
#define RX_F_BOUND 0x00000001 /* receiver already bound */
#define RX_F_INHERITED 0x00000002 /* inherited FD from the parent process (fd@) or duped from another local receiver */
#define RX_F_MWORKER 0x00000004 /* keep the FD open in the master but close it in the children */
#define RX_F_MUST_DUP 0x00000008 /* this receiver's fd must be dup() from a reference; ignore socket-level ops here */
#define RX_F_NON_SUSPENDABLE 0x00000010 /* this socket cannot be suspended hence must always be unbound */
/* Bit values for rx_settings->options */
#define RX_O_FOREIGN 0x00000001 /* receives on foreign addresses */
#define RX_O_V4V6 0x00000002 /* binds to both IPv4 and IPv6 addresses if !V6ONLY */
#define RX_O_V6ONLY 0x00000004 /* binds to IPv6 addresses only */
/* All the settings that are used to configure a receiver */
struct rx_settings {
struct { /* UNIX socket permissions */
uid_t uid; /* -1 to leave unchanged */
gid_t gid; /* -1 to leave unchanged */
mode_t mode; /* 0 to leave unchanged */
} ux;
char *interface; /* interface name or NULL */
const struct netns_entry *netns; /* network namespace of the listener*/
unsigned int options; /* receiver options (RX_O_*) */
int shards; /* number of shards, 0=not set yet, -1="by-thread" */
};
/* info about a shard that is shared between multiple groups. Receivers that
* are alone in their shard do not have a shard_info.
*/
struct shard_info {
uint nbgroups; /* number of groups in this shard (=#rx); Zero = unused. */
uint nbthreads; /* number of threads in this shard (>=nbgroups) */
ulong tgroup_mask; /* bitmask of thread groups having a member here */
struct receiver *ref; /* first one, reference for FDs to duplicate */
struct receiver *members[MAX_TGROUPS]; /* all members of the shard (one per thread group) */
};
/* This describes a receiver with all its characteristics (address, options, etc) */
struct receiver {
int fd; /* handle we receive from (fd only for now) */
unsigned int flags; /* receiver options (RX_F_*) */
struct protocol *proto; /* protocol this receiver belongs to */
void *owner; /* receiver's owner (usually a listener) */
void (*iocb)(int fd); /* generic I/O handler (typically accept callback) */
unsigned long bind_thread; /* bitmask of threads allowed on this receiver */
uint bind_tgroup; /* thread group ID: 0=global IDs, non-zero=local IDs */
struct rx_settings *settings; /* points to the settings used by this receiver */
struct shard_info *shard_info; /* points to info about the owning shard, NULL if single rx */
struct list proto_list; /* list in the protocol header */
#ifdef USE_QUIC
struct mt_list rxbuf_list; /* list of buffers to receive and dispatch QUIC datagrams. */
enum quic_sock_mode quic_mode; /* QUIC socket allocation strategy */
unsigned int quic_curr_handshake; /* count of active QUIC handshakes */
unsigned int quic_curr_accept; /* count of QUIC conns waiting for accept */
#endif
struct {
struct task *task; /* Task used to open connection for reverse. */
struct server *srv; /* Underlying server used to initiate reverse pre-connect. */
struct connection *pend_conn; /* Pending connection waiting to complete reversal before being accepted. */
enum li_preconn_state state; /* State for transition logging. */
} rhttp;
/* warning: this struct is huge, keep it at the bottom */
struct sockaddr_storage addr; /* the address the socket is bound to */
};
#endif /* _HAPROXY_RECEIVER_T_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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