Merge pull request #7351 from opensourcerouting/feature/pathd

Add a new SR-TE policy management daemon and an optional PCEP module

1 files changed, 154 insertions, 0 deletions

diff --git a/pathd/path_main.c b/pathd/path_main.c
new file mode 100644
index 0000000000..8b7d4aba48
--- /dev/null
+++ b/pathd/path_main.c
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2020  NetDEF, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program 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 General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <zebra.h>
+
+#include <lib/version.h>
+#include "getopt.h"
+#include "thread.h"
+#include "command.h"
+#include "log.h"
+#include "memory.h"
+#include "privs.h"
+#include "sigevent.h"
+#include "libfrr.h"
+#include "vrf.h"
+#include "filter.h"
+
+#include "pathd.h"
+#include "path_nb.h"
+#include "path_zebra.h"
+#include "path_errors.h"
+
+char backup_config_file[256];
+
+zebra_capabilities_t _caps_p[] = {};
+
+struct zebra_privs_t pathd_privs = {
+#if defined(FRR_USER) && defined(FRR_GROUP)
+	.user = FRR_USER,
+	.group = FRR_GROUP,
+#endif
+#if defined(VTY_GROUP)
+	.vty_group = VTY_GROUP,
+#endif
+	.caps_p = _caps_p,
+	.cap_num_p = array_size(_caps_p),
+	.cap_num_i = 0};
+
+struct option longopts[] = {{0}};
+
+/* Master of threads. */
+struct thread_master *master;
+
+static struct frr_daemon_info pathd_di;
+
+/* SIGHUP handler. */
+static void sighup(void)
+{
+	zlog_info("SIGHUP received");
+
+	/* Reload config file. */
+	vty_read_config(NULL, pathd_di.config_file, config_default);
+}
+
+/* SIGINT / SIGTERM handler. */
+static void sigint(void)
+{
+	zlog_notice("Terminating on signal");
+
+	exit(0);
+}
+
+/* SIGUSR1 handler. */
+static void sigusr1(void)
+{
+	zlog_rotate();
+}
+
+struct quagga_signal_t path_signals[] = {
+	{
+		.signal = SIGHUP,
+		.handler = &sighup,
+	},
+	{
+		.signal = SIGUSR1,
+		.handler = &sigusr1,
+	},
+	{
+		.signal = SIGINT,
+		.handler = &sigint,
+	},
+	{
+		.signal = SIGTERM,
+		.handler = &sigint,
+	},
+};
+
+static const struct frr_yang_module_info *pathd_yang_modules[] = {
+	&frr_filter_info,
+	&frr_interface_info,
+	&frr_pathd_info,
+};
+
+#define PATH_VTY_PORT 2621
+
+FRR_DAEMON_INFO(pathd, PATH, .vty_port = PATH_VTY_PORT,
+
+		.proghelp = "Implementation of PATH.",
+
+		.signals = path_signals, .n_signals = array_size(path_signals),
+
+		.privs = &pathd_privs, .yang_modules = pathd_yang_modules,
+		.n_yang_modules = array_size(pathd_yang_modules), )
+
+int main(int argc, char **argv, char **envp)
+{
+	frr_preinit(&pathd_di, argc, argv);
+	frr_opt_add("", longopts, "");
+
+	while (1) {
+		int opt;
+
+		opt = frr_getopt(argc, argv, NULL);
+
+		if (opt == EOF)
+			break;
+
+		switch (opt) {
+		case 0:
+			break;
+		default:
+			frr_help_exit(1);
+			break;
+		}
+	}
+
+	master = frr_init();
+
+	access_list_init();
+
+	path_error_init();
+	path_zebra_init(master);
+	path_cli_init();
+
+	frr_config_fork();
+	frr_run(master);
+
+	/* Not reached. */
+	return 0;
+}