*: new cli-nodes for SRv6 manager (step2)

This commit is a part of #5853 that add new cmd-node for SRv6 configuration.
This commit just add cmd-node and moving node cli only, acutual SRv6 config
command isn't added. (that is added later commit. of this branch)

new cli nodes:
* SRv6
* SRv6-locators
* SRv6-locator

Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>

4 files changed, 162 insertions, 0 deletions

diff --git a/zebra/main.c b/zebra/main.c
index 3f75b222ba..259c70d0df 100644
--- a/zebra/main.c
+++ b/zebra/main.c
@@ -57,6 +57,7 @@
 #include "zebra/zebra_nb.h"
 #include "zebra/zebra_opaque.h"
 #include "zebra/zebra_srte.h"
+#include "zebra/zebra_srv6_vty.h"
 
 #define ZEBRA_PTM_SUPPORT
 
@@ -418,6 +419,7 @@ int main(int argc, char **argv)
 	zebra_pbr_init();
 	zebra_opaque_init();
 	zebra_srte_init();
+	zebra_srv6_vty_init();
 
 	/* For debug purpose. */
 	/* SET_FLAG (zebra_debug_event, ZEBRA_DEBUG_EVENT); */
diff --git a/zebra/subdir.am b/zebra/subdir.am
index 6fc8ef0df5..ca77502ba3 100644
--- a/zebra/subdir.am
+++ b/zebra/subdir.am
@@ -13,6 +13,7 @@ vtysh_scan += \
 	zebra/zebra_mlag_vty.c \
 	zebra/zebra_evpn_mh.c \
 	zebra/zebra_mpls_vty.c \
+	zebra/zebra_srv6_vty.c \
 	zebra/zebra_ptm.c \
 	zebra/zebra_pw.c \
 	zebra/zebra_routemap.c \
@@ -92,6 +93,7 @@ zebra_zebra_SOURCES = \
 	zebra/zebra_mpls_openbsd.c \
 	zebra/zebra_mpls_null.c \
 	zebra/zebra_mpls_vty.c \
+	zebra/zebra_srv6_vty.c \
 	zebra/zebra_mroute.c \
 	zebra/zebra_nb.c \
 	zebra/zebra_nb_config.c \
@@ -161,6 +163,7 @@ noinst_HEADERS += \
 	zebra/zebra_mlag.h \
 	zebra/zebra_mlag_vty.h \
 	zebra/zebra_mpls.h \
+	zebra/zebra_srv6_vty.h \
 	zebra/zebra_mroute.h \
 	zebra/zebra_nb.h \
 	zebra/zebra_netns_id.h \
diff --git a/zebra/zebra_srv6_vty.c b/zebra/zebra_srv6_vty.c
new file mode 100644
index 0000000000..f8eff70c2d
--- /dev/null
+++ b/zebra/zebra_srv6_vty.c
@@ -0,0 +1,132 @@
+/*
+ * Zebra SRv6 VTY functions
+ * Copyright (C) 2020  Hiroki Shirokura, LINE Corporation
+ *
+ * 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 "memory.h"
+#include "if.h"
+#include "prefix.h"
+#include "command.h"
+#include "table.h"
+#include "rib.h"
+#include "nexthop.h"
+#include "vrf.h"
+#include "srv6.h"
+#include "lib/json.h"
+
+#include "zebra/zserv.h"
+#include "zebra/zebra_vrf.h"
+#include "zebra/zebra_srv6_vty.h"
+#include "zebra/zebra_rnh.h"
+#include "zebra/redistribute.h"
+#include "zebra/zebra_routemap.h"
+#include "zebra/zebra_dplane.h"
+
+static int zebra_sr_config(struct vty *vty);
+
+static struct cmd_node sr_node = {
+	.name = "sr",
+	.node = SEGMENT_ROUTING_NODE,
+	.parent_node = CONFIG_NODE,
+	.prompt = "%s(config-sr)# ",
+	.config_write = zebra_sr_config,
+};
+
+static struct cmd_node srv6_node = {
+	.name = "srv6",
+	.node = SRV6_NODE,
+	.parent_node = SEGMENT_ROUTING_NODE,
+	.prompt = "%s(config-srv6)# ",
+
+};
+
+static struct cmd_node srv6_locs_node = {
+	.name = "srv6-locators",
+	.node = SRV6_LOCS_NODE,
+	.parent_node = SRV6_NODE,
+	.prompt = "%s(config-srv6-locators)# ",
+};
+
+static struct cmd_node srv6_loc_node = {
+	.name = "srv6-locator",
+	.node = SRV6_LOC_NODE,
+	.parent_node = SRV6_LOCS_NODE,
+	.prompt = "%s(config-srv6-locator)# "
+};
+
+DEFUN_NOSH (segment_routing,
+            segment_routing_cmd,
+            "segment-routing",
+            "Segment Routing\n")
+{
+	vty->node = SEGMENT_ROUTING_NODE;
+	return CMD_SUCCESS;
+}
+
+DEFUN_NOSH (srv6,
+            srv6_cmd,
+            "srv6",
+            "Segment Routing SRv6\n")
+{
+	vty->node = SRV6_NODE;
+	return CMD_SUCCESS;
+}
+
+DEFUN_NOSH (srv6_locators,
+            srv6_locators_cmd,
+            "locators",
+            "Segment Routing SRv6 locators\n")
+{
+	vty->node = SRV6_LOCS_NODE;
+	return CMD_SUCCESS;
+}
+
+DEFUN_NOSH (srv6_locator,
+            srv6_locator_cmd,
+            "locator WORD",
+            "Segment Routing SRv6 locator\n"
+            "Specify locator-name\n")
+{
+	vty->node = SRV6_LOC_NODE;
+	return CMD_SUCCESS;
+}
+
+static int zebra_sr_config(struct vty *vty)
+{
+	return 0;
+}
+
+void zebra_srv6_vty_init(void)
+{
+	/* Install nodes and its default commands */
+	install_node(&sr_node);
+	install_node(&srv6_node);
+	install_node(&srv6_locs_node);
+	install_node(&srv6_loc_node);
+	install_default(SEGMENT_ROUTING_NODE);
+	install_default(SRV6_NODE);
+	install_default(SRV6_LOCS_NODE);
+	install_default(SRV6_LOC_NODE);
+
+	/* Command for change node */
+	install_element(CONFIG_NODE, &segment_routing_cmd);
+	install_element(SEGMENT_ROUTING_NODE, &srv6_cmd);
+	install_element(SRV6_NODE, &srv6_locators_cmd);
+	install_element(SRV6_LOCS_NODE, &srv6_locator_cmd);
+}
diff --git a/zebra/zebra_srv6_vty.h b/zebra/zebra_srv6_vty.h
new file mode 100644
index 0000000000..42d6aefa9a
--- /dev/null
+++ b/zebra/zebra_srv6_vty.h
@@ -0,0 +1,25 @@
+/*
+ * Zebra SRv6 VTY functions
+ * Copyright (C) 2020  Hiroki Shirokura, LINE Corporation
+ *
+ * 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
+ */
+
+#ifndef _ZEBRA_SRV6_VTY_H
+#define _ZEBRA_SRV6_VTY_H
+
+extern void zebra_srv6_vty_init(void);
+
+#endif /* _ZEBRA_SRV6_VTY_H */