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https://git.haproxy.org/git/haproxy.git/
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b743661f04
The receiver is the one which depends on the protocol while the listener relies on the receiver. Let's move the protocol there. Since there's also a list element to get back to the listener from the proto list, this list element (proto_list) was moved as well. For now when scanning protos, we still see listeners which are linked by their rx.proto_list part.
162 lines
4.2 KiB
C
162 lines
4.2 KiB
C
/*
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* Protocol registration functions.
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*
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* Copyright 2000-2012 Willy Tarreau <w@1wt.eu>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <haproxy/api.h>
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#include <haproxy/errors.h>
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#include <haproxy/list.h>
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#include <haproxy/listener.h>
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#include <haproxy/protocol.h>
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#include <haproxy/proxy.h>
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#include <haproxy/tools.h>
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/* List head of all registered protocols */
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static struct list protocols = LIST_HEAD_INIT(protocols);
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struct protocol *__protocol_by_family[AF_CUST_MAX] = { };
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/* This is the global spinlock we may need to register/unregister listeners or
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* protocols. Its main purpose is in fact to serialize the rare stop/deinit()
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* phases.
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*/
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__decl_spinlock(proto_lock);
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/* Registers the protocol <proto> */
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void protocol_register(struct protocol *proto)
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{
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HA_SPIN_LOCK(PROTO_LOCK, &proto_lock);
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LIST_ADDQ(&protocols, &proto->list);
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if (proto->sock_domain >= 0 && proto->sock_domain < AF_CUST_MAX)
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__protocol_by_family[proto->sock_domain] = proto;
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HA_SPIN_UNLOCK(PROTO_LOCK, &proto_lock);
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}
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/* Unregisters the protocol <proto>. Note that all listeners must have
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* previously been unbound.
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*/
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void protocol_unregister(struct protocol *proto)
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{
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HA_SPIN_LOCK(PROTO_LOCK, &proto_lock);
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LIST_DEL(&proto->list);
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LIST_INIT(&proto->list);
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HA_SPIN_UNLOCK(PROTO_LOCK, &proto_lock);
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}
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/* binds all listeners of all registered protocols. Returns a composition
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* of ERR_NONE, ERR_RETRYABLE, ERR_FATAL.
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*/
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int protocol_bind_all(int verbose)
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{
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struct protocol *proto;
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struct listener *listener;
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char msg[100];
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int err, lerr;
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err = 0;
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HA_SPIN_LOCK(PROTO_LOCK, &proto_lock);
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list_for_each_entry(proto, &protocols, list) {
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list_for_each_entry(listener, &proto->listeners, rx.proto_list) {
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lerr = proto->bind(listener, msg, sizeof(msg));
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/* errors are reported if <verbose> is set or if they are fatal */
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if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) {
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struct proxy *px = listener->bind_conf->frontend;
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if (lerr & ERR_ALERT)
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ha_alert("Starting %s %s: %s\n",
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proxy_type_str(px), px->id, msg);
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else if (lerr & ERR_WARN)
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ha_warning("Starting %s %s: %s\n",
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proxy_type_str(px), px->id, msg);
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}
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err |= lerr;
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if (lerr & ERR_ABORT)
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break;
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}
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if (err & ERR_ABORT)
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break;
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}
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HA_SPIN_UNLOCK(PROTO_LOCK, &proto_lock);
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return err;
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}
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/* unbinds all listeners of all registered protocols. They are also closed.
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* This must be performed before calling exit() in order to get a chance to
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* remove file-system based sockets and pipes.
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* Returns a composition of ERR_NONE, ERR_RETRYABLE, ERR_FATAL, ERR_ABORT.
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*/
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int protocol_unbind_all(void)
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{
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struct protocol *proto;
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struct listener *listener;
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int err;
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err = 0;
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HA_SPIN_LOCK(PROTO_LOCK, &proto_lock);
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list_for_each_entry(proto, &protocols, list) {
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list_for_each_entry(listener, &proto->listeners, rx.proto_list)
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unbind_listener(listener);
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}
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HA_SPIN_UNLOCK(PROTO_LOCK, &proto_lock);
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return err;
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}
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/* enables all listeners of all registered protocols. This is intended to be
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* used after a fork() to enable reading on all file descriptors. Returns a
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* composition of ERR_NONE, ERR_RETRYABLE, ERR_FATAL.
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*/
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int protocol_enable_all(void)
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{
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struct protocol *proto;
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int err;
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err = 0;
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HA_SPIN_LOCK(PROTO_LOCK, &proto_lock);
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list_for_each_entry(proto, &protocols, list) {
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if (proto->enable_all) {
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err |= proto->enable_all(proto);
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}
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}
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HA_SPIN_UNLOCK(PROTO_LOCK, &proto_lock);
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return err;
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}
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/* disables all listeners of all registered protocols. This may be used before
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* a fork() to avoid duplicating poll lists. Returns a composition of ERR_NONE,
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* ERR_RETRYABLE, ERR_FATAL.
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*/
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int protocol_disable_all(void)
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{
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struct protocol *proto;
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int err;
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err = 0;
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HA_SPIN_LOCK(PROTO_LOCK, &proto_lock);
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list_for_each_entry(proto, &protocols, list) {
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if (proto->disable_all) {
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err |= proto->disable_all(proto);
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}
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}
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HA_SPIN_UNLOCK(PROTO_LOCK, &proto_lock);
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return err;
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}
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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