From e2bbf175a2184bd76f6c54ccf8456babeb1a46fc Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Tue, 9 Apr 2024 15:16:35 +0200
Subject: Adding upstream version 9.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 ldpd/accept.c | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 ldpd/accept.c

(limited to 'ldpd/accept.c')

diff --git a/ldpd/accept.c b/ldpd/accept.c
new file mode 100644
index 0000000..8e881e7
--- /dev/null
+++ b/ldpd/accept.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: ISC
+/*	$OpenBSD$ */
+
+/*
+ * Copyright (c) 2012 Claudio Jeker <claudio@openbsd.org>
+ */
+
+#include <zebra.h>
+
+#include "ldpd.h"
+#include "ldpe.h"
+#include "log.h"
+
+struct accept_ev {
+	LIST_ENTRY(accept_ev)	 entry;
+	struct event *ev;
+	void (*accept_cb)(struct event *);
+	void			*arg;
+	int			 fd;
+};
+
+struct {
+	LIST_HEAD(, accept_ev)	 queue;
+	struct event *evt;
+} accept_queue;
+
+static void	accept_arm(void);
+static void	accept_unarm(void);
+static void accept_cb(struct event *);
+static void accept_timeout(struct event *);
+
+void
+accept_init(void)
+{
+	LIST_INIT(&accept_queue.queue);
+}
+
+int accept_add(int fd, void (*cb)(struct event *), void *arg)
+{
+	struct accept_ev	*av;
+
+	if ((av = calloc(1, sizeof(*av))) == NULL)
+		return (-1);
+	av->fd = fd;
+	av->accept_cb = cb;
+	av->arg = arg;
+	LIST_INSERT_HEAD(&accept_queue.queue, av, entry);
+
+	event_add_read(master, accept_cb, av, av->fd, &av->ev);
+
+	log_debug("%s: accepting on fd %d", __func__, fd);
+
+	return (0);
+}
+
+void
+accept_del(int fd)
+{
+	struct accept_ev	*av;
+
+	LIST_FOREACH(av, &accept_queue.queue, entry)
+		if (av->fd == fd) {
+			log_debug("%s: %d removed from queue", __func__, fd);
+			EVENT_OFF(av->ev);
+			LIST_REMOVE(av, entry);
+			free(av);
+			return;
+		}
+}
+
+void
+accept_pause(void)
+{
+	log_debug(__func__);
+	accept_unarm();
+	event_add_timer(master, accept_timeout, NULL, 1, &accept_queue.evt);
+}
+
+void
+accept_unpause(void)
+{
+	if (accept_queue.evt != NULL) {
+		log_debug(__func__);
+		EVENT_OFF(accept_queue.evt);
+		accept_arm();
+	}
+}
+
+static void
+accept_arm(void)
+{
+	struct accept_ev	*av;
+	LIST_FOREACH(av, &accept_queue.queue, entry) {
+		event_add_read(master, accept_cb, av, av->fd, &av->ev);
+	}
+}
+
+static void
+accept_unarm(void)
+{
+	struct accept_ev	*av;
+	LIST_FOREACH(av, &accept_queue.queue, entry)
+		EVENT_OFF(av->ev);
+}
+
+static void accept_cb(struct event *thread)
+{
+	struct accept_ev *av = EVENT_ARG(thread);
+	event_add_read(master, accept_cb, av, av->fd, &av->ev);
+	av->accept_cb(thread);
+}
+
+static void accept_timeout(struct event *thread)
+{
+	accept_queue.evt = NULL;
+
+	log_debug(__func__);
+	accept_arm();
+}
-- 
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