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-rw-r--r--zebra/zebra_mpls_vty.c482
1 files changed, 482 insertions, 0 deletions
diff --git a/zebra/zebra_mpls_vty.c b/zebra/zebra_mpls_vty.c
new file mode 100644
index 0000000..ca66e03
--- /dev/null
+++ b/zebra/zebra_mpls_vty.c
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+/* Zebra MPLS VTY functions
+ * Copyright (C) 2002 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra 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, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra 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 "mpls.h"
+#include "lib/json.h"
+
+#include "zebra/zserv.h"
+#include "zebra/zebra_vrf.h"
+#include "zebra/zebra_mpls.h"
+#include "zebra/zebra_rnh.h"
+#include "zebra/redistribute.h"
+#include "zebra/zebra_routemap.h"
+
+static int zebra_mpls_transit_lsp(struct vty *vty, int add_cmd,
+ const char *inlabel_str, const char *gate_str,
+ const char *outlabel_str,
+ const char *flag_str)
+{
+ struct zebra_vrf *zvrf;
+ int ret;
+ enum nexthop_types_t gtype;
+ union g_addr gate;
+ mpls_label_t label;
+ mpls_label_t in_label, out_label;
+
+ if (!mpls_enabled) {
+ vty_out(vty,
+ "%% MPLS not turned on in kernel, ignoring command\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ if (!zvrf) {
+ vty_out(vty, "%% Default VRF does not exist\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ if (!inlabel_str) {
+ vty_out(vty, "%% No Label Information\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ out_label = MPLS_LABEL_IMPLICIT_NULL; /* as initialization */
+ label = atoi(inlabel_str);
+ if (!IS_MPLS_UNRESERVED_LABEL(label)) {
+ vty_out(vty, "%% Invalid label\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ if (add_cmd) {
+ if (!gate_str) {
+ vty_out(vty, "%% No Nexthop Information\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+ if (!outlabel_str) {
+ vty_out(vty, "%% No Outgoing label Information\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+ }
+
+ in_label = label;
+ gtype = NEXTHOP_TYPE_BLACKHOLE; /* as initialization */
+
+ if (gate_str) {
+ /* Gateway is a IPv4 or IPv6 nexthop. */
+ ret = inet_pton(AF_INET6, gate_str, &gate.ipv6);
+ if (ret == 1)
+ gtype = NEXTHOP_TYPE_IPV6;
+ else {
+ ret = inet_pton(AF_INET, gate_str, &gate.ipv4);
+ if (ret == 1)
+ gtype = NEXTHOP_TYPE_IPV4;
+ else {
+ vty_out(vty, "%% Invalid nexthop\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+ }
+ }
+
+ if (outlabel_str) {
+ if (outlabel_str[0] == 'i')
+ out_label = MPLS_LABEL_IMPLICIT_NULL;
+ else if (outlabel_str[0] == 'e' && gtype == NEXTHOP_TYPE_IPV4)
+ out_label = MPLS_LABEL_IPV4_EXPLICIT_NULL;
+ else if (outlabel_str[0] == 'e' && gtype == NEXTHOP_TYPE_IPV6)
+ out_label = MPLS_LABEL_IPV6_EXPLICIT_NULL;
+ else
+ out_label = atoi(outlabel_str);
+ }
+
+ if (add_cmd) {
+#if defined(HAVE_CUMULUS)
+ /* Check that label value is consistent. */
+ if (!zebra_mpls_lsp_label_consistent(zvrf, in_label, out_label,
+ gtype, &gate, 0)) {
+ vty_out(vty, "%% Label value not consistent\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+#endif /* HAVE_CUMULUS */
+
+ ret = zebra_mpls_static_lsp_add(zvrf, in_label, out_label,
+ gtype, &gate, 0);
+ } else
+ ret = zebra_mpls_static_lsp_del(zvrf, in_label, gtype, &gate,
+ 0);
+
+ if (ret != 0) {
+ vty_out(vty, "%% LSP cannot be %s\n",
+ add_cmd ? "added" : "deleted");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (mpls_transit_lsp,
+ mpls_transit_lsp_cmd,
+ "mpls lsp (16-1048575) <A.B.C.D|X:X::X:X> <(16-1048575)|explicit-null|implicit-null>",
+ MPLS_STR
+ "Establish label switched path\n"
+ "Incoming MPLS label\n"
+ "IPv4 gateway address\n"
+ "IPv6 gateway address\n"
+ "Outgoing MPLS label\n"
+ "Use Explicit-Null label\n"
+ "Use Implicit-Null label\n")
+{
+ return zebra_mpls_transit_lsp(vty, 1, argv[2]->arg, argv[3]->arg,
+ argv[4]->arg, NULL);
+}
+
+DEFUN (no_mpls_transit_lsp,
+ no_mpls_transit_lsp_cmd,
+ "no mpls lsp (16-1048575) <A.B.C.D|X:X::X:X>",
+ NO_STR
+ MPLS_STR
+ "Establish label switched path\n"
+ "Incoming MPLS label\n"
+ "IPv4 gateway address\n"
+ "IPv6 gateway address\n")
+{
+ return zebra_mpls_transit_lsp(vty, 0, argv[3]->arg, argv[4]->arg, NULL,
+ NULL);
+}
+
+ALIAS(no_mpls_transit_lsp, no_mpls_transit_lsp_out_label_cmd,
+ "no mpls lsp (16-1048575) <A.B.C.D|X:X::X:X> <(16-1048575)|explicit-null|implicit-null>",
+ NO_STR MPLS_STR
+ "Establish label switched path\n"
+ "Incoming MPLS label\n"
+ "IPv4 gateway address\n"
+ "IPv6 gateway address\n"
+ "Outgoing MPLS label\n"
+ "Use Explicit-Null label\n"
+ "Use Implicit-Null label\n")
+
+DEFUN (no_mpls_transit_lsp_all,
+ no_mpls_transit_lsp_all_cmd,
+ "no mpls lsp (16-1048575)",
+ NO_STR
+ MPLS_STR
+ "Establish label switched path\n"
+ "Incoming MPLS label\n")
+{
+ return zebra_mpls_transit_lsp(vty, 0, argv[3]->arg, NULL, NULL, NULL);
+}
+
+static int zebra_mpls_bind(struct vty *vty, int add_cmd, const char *prefix,
+ const char *label_str)
+{
+ struct zebra_vrf *zvrf;
+ struct prefix p;
+ uint32_t label;
+ int ret;
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ if (!zvrf) {
+ vty_out(vty, "%% Default VRF does not exist\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ memset(&p, 0, sizeof(p));
+ ret = str2prefix(prefix, &p);
+ if (ret <= 0) {
+ vty_out(vty, "%% Malformed address\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ if (add_cmd) {
+ if (!label_str) {
+ vty_out(vty, "%% No label binding specified\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ if (!strcmp(label_str, "implicit-null"))
+ label = MPLS_LABEL_IMPLICIT_NULL;
+ else if (!strcmp(label_str, "explicit-null")) {
+ if (p.family == AF_INET)
+ label = MPLS_LABEL_IPV4_EXPLICIT_NULL;
+ else
+ label = MPLS_LABEL_IPV6_EXPLICIT_NULL;
+ } else {
+ label = atoi(label_str);
+ if (!IS_MPLS_UNRESERVED_LABEL(label)) {
+ vty_out(vty, "%% Invalid label\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+ if (zebra_mpls_label_already_bound(zvrf, label)) {
+ vty_out(vty,
+ "%% Label already bound to a FEC\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+ }
+
+ ret = zebra_mpls_static_fec_add(zvrf, &p, label);
+ } else
+ ret = zebra_mpls_static_fec_del(zvrf, &p);
+
+ if (ret) {
+ vty_out(vty, "%% FEC to label binding cannot be %s\n",
+ add_cmd ? "added" : "deleted");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (mpls_label_bind,
+ mpls_label_bind_cmd,
+ "mpls label bind <A.B.C.D/M|X:X::X:X/M> <(16-1048575)|implicit-null|explicit-null>",
+ MPLS_STR
+ "Label configuration\n"
+ "Establish FEC to label binding\n"
+ "IPv4 prefix\n"
+ "IPv6 prefix\n"
+ "MPLS Label to bind\n"
+ "Use Implicit-Null Label\n"
+ "Use Explicit-Null Label\n")
+{
+ return zebra_mpls_bind(vty, 1, argv[3]->arg, argv[4]->arg);
+}
+
+DEFUN (no_mpls_label_bind,
+ no_mpls_label_bind_cmd,
+ "no mpls label bind <A.B.C.D/M|X:X::X:X/M> [<(16-1048575)|implicit-null>]",
+ NO_STR
+ MPLS_STR
+ "Label configuration\n"
+ "Establish FEC to label binding\n"
+ "IPv4 prefix\n"
+ "IPv6 prefix\n"
+ "MPLS Label to bind\n"
+ "Use Implicit-Null Label\n")
+{
+ return zebra_mpls_bind(vty, 0, argv[4]->arg, NULL);
+}
+
+/* MPLS LSP configuration write function. */
+static int zebra_mpls_config(struct vty *vty)
+{
+ int write = 0;
+ struct zebra_vrf *zvrf;
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ if (!zvrf)
+ return 0;
+
+ write += zebra_mpls_write_lsp_config(vty, zvrf);
+ write += zebra_mpls_write_fec_config(vty, zvrf);
+ write += zebra_mpls_write_label_block_config(vty, zvrf);
+ return write;
+}
+
+DEFUN (show_mpls_fec,
+ show_mpls_fec_cmd,
+ "show mpls fec [<A.B.C.D/M|X:X::X:X/M>]",
+ SHOW_STR
+ MPLS_STR
+ "MPLS FEC table\n"
+ "FEC to display information about\n"
+ "FEC to display information about\n")
+{
+ struct zebra_vrf *zvrf;
+ struct prefix p;
+ int ret;
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ if (!zvrf)
+ return 0;
+
+ if (argc == 3)
+ zebra_mpls_print_fec_table(vty, zvrf);
+ else {
+ memset(&p, 0, sizeof(struct prefix));
+ ret = str2prefix(argv[3]->arg, &p);
+ if (ret <= 0) {
+ vty_out(vty, "%% Malformed address\n");
+ return CMD_WARNING;
+ }
+ zebra_mpls_print_fec(vty, zvrf, &p);
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (show_mpls_table,
+ show_mpls_table_cmd,
+ "show mpls table [json]",
+ SHOW_STR
+ MPLS_STR
+ "MPLS table\n"
+ JSON_STR)
+{
+ struct zebra_vrf *zvrf;
+ bool uj = use_json(argc, argv);
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ zebra_mpls_print_lsp_table(vty, zvrf, uj);
+ return CMD_SUCCESS;
+}
+
+DEFUN (show_mpls_table_lsp,
+ show_mpls_table_lsp_cmd,
+ "show mpls table (16-1048575) [json]",
+ SHOW_STR
+ MPLS_STR
+ "MPLS table\n"
+ "LSP to display information about\n"
+ JSON_STR)
+{
+ uint32_t label;
+ struct zebra_vrf *zvrf;
+ bool uj = use_json(argc, argv);
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ label = atoi(argv[3]->arg);
+ zebra_mpls_print_lsp(vty, zvrf, label, uj);
+ return CMD_SUCCESS;
+}
+
+DEFUN (show_mpls_status,
+ show_mpls_status_cmd,
+ "show mpls status",
+ SHOW_STR
+ "MPLS information\n"
+ "MPLS status\n")
+{
+ vty_out(vty, "MPLS support enabled: %s\n",
+ (mpls_enabled) ? "yes"
+ : "no (mpls kernel extensions not detected)");
+ return CMD_SUCCESS;
+}
+
+static int zebra_mpls_global_block(struct vty *vty, int add_cmd,
+ const char *start_label_str,
+ const char *end_label_str)
+{
+ int ret;
+ uint32_t start_label;
+ uint32_t end_label;
+ struct zebra_vrf *zvrf;
+
+ zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
+ if (!zvrf) {
+ vty_out(vty, "%% Default VRF does not exist\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ if (add_cmd) {
+ if (!start_label_str || !end_label_str) {
+ vty_out(vty, "%% Labels not specified\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ start_label = atoi(start_label_str);
+ end_label = atoi(end_label_str);
+ if (!IS_MPLS_UNRESERVED_LABEL(start_label)
+ || !IS_MPLS_UNRESERVED_LABEL(end_label)) {
+ vty_out(vty, "%% Invalid label\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+ if (end_label < start_label) {
+ vty_out(vty, "%% End label is less than Start label\n");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ ret = zebra_mpls_label_block_add(zvrf, start_label, end_label);
+ } else
+ ret = zebra_mpls_label_block_del(zvrf);
+
+ if (ret) {
+ vty_out(vty, "%% Global label block could not be %s\n",
+ add_cmd ? "added" : "deleted");
+ return CMD_WARNING_CONFIG_FAILED;
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (mpls_label_global_block,
+ mpls_label_global_block_cmd,
+ "mpls label global-block (16-1048575) (16-1048575)",
+ MPLS_STR
+ "Label configuration\n"
+ "Configure global label block\n"
+ "Start label\n"
+ "End label\n")
+{
+ return zebra_mpls_global_block(vty, 1, argv[3]->arg, argv[4]->arg);
+}
+
+DEFUN (no_mpls_label_global_block,
+ no_mpls_label_global_block_cmd,
+ "no mpls label global-block [(16-1048575) (16-1048575)]",
+ NO_STR
+ MPLS_STR
+ "Label configuration\n"
+ "Configure global label block\n"
+ "Start label\n"
+ "End label\n")
+{
+ return zebra_mpls_global_block(vty, 0, NULL, NULL);
+}
+
+static int zebra_mpls_config(struct vty *vty);
+/* MPLS node for MPLS LSP. */
+static struct cmd_node mpls_node = {
+ .name = "mpls",
+ .node = MPLS_NODE,
+ .prompt = "",
+ .config_write = zebra_mpls_config,
+};
+
+/* MPLS VTY. */
+void zebra_mpls_vty_init(void)
+{
+ install_element(VIEW_NODE, &show_mpls_status_cmd);
+
+ install_node(&mpls_node);
+
+ install_element(CONFIG_NODE, &mpls_transit_lsp_cmd);
+ install_element(CONFIG_NODE, &no_mpls_transit_lsp_cmd);
+ install_element(CONFIG_NODE, &no_mpls_transit_lsp_out_label_cmd);
+ install_element(CONFIG_NODE, &no_mpls_transit_lsp_all_cmd);
+
+ install_element(CONFIG_NODE, &mpls_label_bind_cmd);
+ install_element(CONFIG_NODE, &no_mpls_label_bind_cmd);
+
+ install_element(CONFIG_NODE, &mpls_label_global_block_cmd);
+ install_element(CONFIG_NODE, &no_mpls_label_global_block_cmd);
+
+ install_element(VIEW_NODE, &show_mpls_table_cmd);
+ install_element(VIEW_NODE, &show_mpls_table_lsp_cmd);
+ install_element(VIEW_NODE, &show_mpls_fec_cmd);
+}