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-rw-r--r--zebra/zebra_pw.c866
1 files changed, 866 insertions, 0 deletions
diff --git a/zebra/zebra_pw.c b/zebra/zebra_pw.c
new file mode 100644
index 0000000..be089fc
--- /dev/null
+++ b/zebra/zebra_pw.c
@@ -0,0 +1,866 @@
+/* Zebra PW code
+ * Copyright (C) 2016 Volta Networks, 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 "log.h"
+#include "memory.h"
+#include "thread.h"
+#include "command.h"
+#include "vrf.h"
+#include "lib/json.h"
+#include "printfrr.h"
+
+#include "zebra/debug.h"
+#include "zebra/rib.h"
+#include "zebra/zebra_router.h"
+#include "zebra/zapi_msg.h"
+#include "zebra/zebra_rnh.h"
+#include "zebra/zebra_vrf.h"
+#include "zebra/zebra_pw.h"
+
+DEFINE_MTYPE_STATIC(LIB, PW, "Pseudowire");
+
+DEFINE_QOBJ_TYPE(zebra_pw);
+
+DEFINE_HOOK(pw_install, (struct zebra_pw * pw), (pw));
+DEFINE_HOOK(pw_uninstall, (struct zebra_pw * pw), (pw));
+
+#define MPLS_NO_LABEL MPLS_INVALID_LABEL
+
+static int zebra_pw_enabled(struct zebra_pw *);
+static void zebra_pw_install(struct zebra_pw *);
+static void zebra_pw_uninstall(struct zebra_pw *);
+static void zebra_pw_install_retry(struct thread *thread);
+static int zebra_pw_check_reachability(const struct zebra_pw *);
+static void zebra_pw_update_status(struct zebra_pw *, int);
+
+static inline int zebra_pw_compare(const struct zebra_pw *a,
+ const struct zebra_pw *b)
+{
+ return (strcmp(a->ifname, b->ifname));
+}
+
+RB_GENERATE(zebra_pw_head, zebra_pw, pw_entry, zebra_pw_compare)
+RB_GENERATE(zebra_static_pw_head, zebra_pw, static_pw_entry, zebra_pw_compare)
+
+struct zebra_pw *zebra_pw_add(struct zebra_vrf *zvrf, const char *ifname,
+ uint8_t protocol, struct zserv *client)
+{
+ struct zebra_pw *pw;
+
+ if (IS_ZEBRA_DEBUG_PW)
+ zlog_debug("%u: adding pseudowire %s protocol %s",
+ zvrf_id(zvrf), ifname, zebra_route_string(protocol));
+
+ pw = XCALLOC(MTYPE_PW, sizeof(*pw));
+ strlcpy(pw->ifname, ifname, sizeof(pw->ifname));
+ pw->protocol = protocol;
+ pw->vrf_id = zvrf_id(zvrf);
+ pw->client = client;
+ pw->status = PW_NOT_FORWARDING;
+ pw->local_label = MPLS_NO_LABEL;
+ pw->remote_label = MPLS_NO_LABEL;
+ pw->flags = F_PSEUDOWIRE_CWORD;
+
+ RB_INSERT(zebra_pw_head, &zvrf->pseudowires, pw);
+ if (pw->protocol == ZEBRA_ROUTE_STATIC) {
+ RB_INSERT(zebra_static_pw_head, &zvrf->static_pseudowires, pw);
+ QOBJ_REG(pw, zebra_pw);
+ }
+
+ return pw;
+}
+
+void zebra_pw_del(struct zebra_vrf *zvrf, struct zebra_pw *pw)
+{
+ if (IS_ZEBRA_DEBUG_PW)
+ zlog_debug("%u: deleting pseudowire %s protocol %s", pw->vrf_id,
+ pw->ifname, zebra_route_string(pw->protocol));
+
+ /* remove nexthop tracking */
+ zebra_deregister_rnh_pseudowire(pw->vrf_id, pw);
+
+ /* uninstall */
+ if (pw->status == PW_FORWARDING) {
+ hook_call(pw_uninstall, pw);
+ dplane_pw_uninstall(pw);
+ }
+
+ THREAD_OFF(pw->install_retry_timer);
+
+ /* unlink and release memory */
+ RB_REMOVE(zebra_pw_head, &zvrf->pseudowires, pw);
+ if (pw->protocol == ZEBRA_ROUTE_STATIC)
+ RB_REMOVE(zebra_static_pw_head, &zvrf->static_pseudowires, pw);
+
+ XFREE(MTYPE_PW, pw);
+}
+
+void zebra_pw_change(struct zebra_pw *pw, ifindex_t ifindex, int type, int af,
+ union g_addr *nexthop, uint32_t local_label,
+ uint32_t remote_label, uint8_t flags,
+ union pw_protocol_fields *data)
+{
+ pw->ifindex = ifindex;
+ pw->type = type;
+ pw->af = af;
+ pw->nexthop = *nexthop;
+ pw->local_label = local_label;
+ pw->remote_label = remote_label;
+ pw->flags = flags;
+ pw->data = *data;
+
+ if (zebra_pw_enabled(pw)) {
+ bool nht_exists;
+ zebra_register_rnh_pseudowire(pw->vrf_id, pw, &nht_exists);
+ if (nht_exists)
+ zebra_pw_update(pw);
+ } else {
+ if (pw->protocol == ZEBRA_ROUTE_STATIC)
+ zebra_deregister_rnh_pseudowire(pw->vrf_id, pw);
+ zebra_pw_uninstall(pw);
+ }
+}
+
+struct zebra_pw *zebra_pw_find(struct zebra_vrf *zvrf, const char *ifname)
+{
+ struct zebra_pw pw;
+ strlcpy(pw.ifname, ifname, sizeof(pw.ifname));
+ return (RB_FIND(zebra_pw_head, &zvrf->pseudowires, &pw));
+}
+
+static int zebra_pw_enabled(struct zebra_pw *pw)
+{
+ if (pw->protocol == ZEBRA_ROUTE_STATIC) {
+ if (pw->local_label == MPLS_NO_LABEL
+ || pw->remote_label == MPLS_NO_LABEL || pw->af == AF_UNSPEC)
+ return 0;
+ return 1;
+ } else
+ return pw->enabled;
+}
+
+void zebra_pw_update(struct zebra_pw *pw)
+{
+ if (zebra_pw_check_reachability(pw) < 0) {
+ zebra_pw_uninstall(pw);
+ zebra_pw_install_failure(pw, PW_NOT_FORWARDING);
+ /* wait for NHT and try again later */
+ } else {
+ /*
+ * Install or reinstall the pseudowire (e.g. to update
+ * parameters like the nexthop or the use of the control word).
+ */
+ zebra_pw_install(pw);
+ }
+}
+
+static void zebra_pw_install(struct zebra_pw *pw)
+{
+ if (IS_ZEBRA_DEBUG_PW)
+ zlog_debug("%u: installing pseudowire %s protocol %s",
+ pw->vrf_id, pw->ifname,
+ zebra_route_string(pw->protocol));
+
+ hook_call(pw_install, pw);
+ if (dplane_pw_install(pw) == ZEBRA_DPLANE_REQUEST_FAILURE) {
+ zebra_pw_install_failure(pw, PW_NOT_FORWARDING);
+ return;
+ }
+
+ if (pw->status != PW_FORWARDING)
+ zebra_pw_update_status(pw, PW_FORWARDING);
+}
+
+static void zebra_pw_uninstall(struct zebra_pw *pw)
+{
+ if (pw->status != PW_FORWARDING)
+ return;
+
+ if (IS_ZEBRA_DEBUG_PW)
+ zlog_debug("%u: uninstalling pseudowire %s protocol %s",
+ pw->vrf_id, pw->ifname,
+ zebra_route_string(pw->protocol));
+
+ /* ignore any possible error */
+ hook_call(pw_uninstall, pw);
+ dplane_pw_uninstall(pw);
+
+ if (zebra_pw_enabled(pw))
+ zebra_pw_update_status(pw, PW_NOT_FORWARDING);
+}
+
+/*
+ * Installation of the pseudowire in the kernel or hardware has failed. This
+ * function will notify the pseudowire client about the failure and schedule
+ * to retry the installation later. This function can be called by an external
+ * agent that performs the pseudowire installation in an asynchronous way.
+ */
+void zebra_pw_install_failure(struct zebra_pw *pw, int pwstatus)
+{
+ if (IS_ZEBRA_DEBUG_PW)
+ zlog_debug(
+ "%u: failed installing pseudowire %s, scheduling retry in %u seconds",
+ pw->vrf_id, pw->ifname, PW_INSTALL_RETRY_INTERVAL);
+
+ /* schedule to retry later */
+ THREAD_OFF(pw->install_retry_timer);
+ thread_add_timer(zrouter.master, zebra_pw_install_retry, pw,
+ PW_INSTALL_RETRY_INTERVAL, &pw->install_retry_timer);
+
+ zebra_pw_update_status(pw, pwstatus);
+}
+
+static void zebra_pw_install_retry(struct thread *thread)
+{
+ struct zebra_pw *pw = THREAD_ARG(thread);
+
+ zebra_pw_install(pw);
+}
+
+static void zebra_pw_update_status(struct zebra_pw *pw, int status)
+{
+ pw->status = status;
+ if (pw->client)
+ zsend_pw_update(pw->client, pw);
+}
+
+static int zebra_pw_check_reachability_strict(const struct zebra_pw *pw,
+ struct route_entry *re)
+{
+ const struct nexthop *nexthop;
+ const struct nexthop_group *nhg;
+ bool found_p = false;
+ bool fail_p = false;
+
+ /* TODO: consider GRE/L2TPv3 tunnels in addition to MPLS LSPs */
+
+ /* All active nexthops must be labelled; look at
+ * primary and backup fib lists, in case there's been
+ * a backup nexthop activation.
+ */
+ nhg = rib_get_fib_nhg(re);
+ if (nhg && nhg->nexthop) {
+ for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
+ if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
+ continue;
+
+ if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) {
+ if (nexthop->nh_label != NULL)
+ found_p = true;
+ else {
+ fail_p = true;
+ break;
+ }
+ }
+ }
+ }
+
+ if (fail_p)
+ goto done;
+
+ nhg = rib_get_fib_backup_nhg(re);
+ if (nhg && nhg->nexthop) {
+ for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
+ if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
+ continue;
+
+ if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) {
+ if (nexthop->nh_label != NULL)
+ found_p = true;
+ else {
+ fail_p = true;
+ break;
+ }
+ }
+ }
+ }
+
+done:
+
+ if (fail_p || !found_p) {
+ if (IS_ZEBRA_DEBUG_PW)
+ zlog_debug("%s: unlabeled route for %s",
+ __func__, pw->ifname);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int zebra_pw_check_reachability(const struct zebra_pw *pw)
+{
+ struct route_entry *re;
+ const struct nexthop *nexthop;
+ const struct nexthop_group *nhg;
+ bool found_p = false;
+
+ /* TODO: consider GRE/L2TPv3 tunnels in addition to MPLS LSPs */
+
+ /* Find route to the remote end of the pseudowire */
+ re = rib_match(family2afi(pw->af), SAFI_UNICAST, pw->vrf_id,
+ &pw->nexthop, NULL);
+ if (!re) {
+ if (IS_ZEBRA_DEBUG_PW)
+ zlog_debug("%s: no route found for %s", __func__,
+ pw->ifname);
+ return -1;
+ }
+
+ /* Stricter checking for some OSes (OBSD, e.g.) */
+ if (mpls_pw_reach_strict)
+ return zebra_pw_check_reachability_strict(pw, re);
+
+ /* There must be at least one installed labelled nexthop;
+ * look at primary and backup fib lists, in case there's been
+ * a backup nexthop activation.
+ */
+ nhg = rib_get_fib_nhg(re);
+ if (nhg && nhg->nexthop) {
+ for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
+ if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
+ continue;
+
+ if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) &&
+ nexthop->nh_label != NULL) {
+ found_p = true;
+ break;
+ }
+ }
+ }
+
+ if (found_p)
+ return 0;
+
+ nhg = rib_get_fib_backup_nhg(re);
+ if (nhg && nhg->nexthop) {
+ for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
+ if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
+ continue;
+
+ if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) &&
+ nexthop->nh_label != NULL) {
+ found_p = true;
+ break;
+ }
+ }
+ }
+
+ if (!found_p) {
+ if (IS_ZEBRA_DEBUG_PW)
+ zlog_debug("%s: unlabeled route for %s",
+ __func__, pw->ifname);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int zebra_pw_client_close(struct zserv *client)
+{
+ struct vrf *vrf;
+ struct zebra_vrf *zvrf;
+ struct zebra_pw *pw, *tmp;
+
+ RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
+ zvrf = vrf->info;
+ RB_FOREACH_SAFE (pw, zebra_pw_head, &zvrf->pseudowires, tmp) {
+ if (pw->client != client)
+ continue;
+ zebra_pw_del(zvrf, pw);
+ }
+ }
+
+ return 0;
+}
+
+void zebra_pw_init(struct zebra_vrf *zvrf)
+{
+ RB_INIT(zebra_pw_head, &zvrf->pseudowires);
+ RB_INIT(zebra_static_pw_head, &zvrf->static_pseudowires);
+
+ hook_register(zserv_client_close, zebra_pw_client_close);
+}
+
+void zebra_pw_exit(struct zebra_vrf *zvrf)
+{
+ struct zebra_pw *pw;
+
+ while (!RB_EMPTY(zebra_pw_head, &zvrf->pseudowires)) {
+ pw = RB_ROOT(zebra_pw_head, &zvrf->pseudowires);
+
+ zebra_pw_del(zvrf, pw);
+ }
+}
+
+DEFUN_NOSH (pseudowire_if,
+ pseudowire_if_cmd,
+ "pseudowire IFNAME",
+ "Static pseudowire configuration\n"
+ "Pseudowire name\n")
+{
+ struct zebra_vrf *zvrf;
+ struct zebra_pw *pw;
+ const char *ifname;
+ int idx = 0;
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ if (!zvrf)
+ return CMD_WARNING;
+
+ argv_find(argv, argc, "IFNAME", &idx);
+ ifname = argv[idx]->arg;
+
+ pw = zebra_pw_find(zvrf, ifname);
+ if (pw && pw->protocol != ZEBRA_ROUTE_STATIC) {
+ vty_out(vty, "%% Pseudowire is not static\n");
+ return CMD_WARNING;
+ }
+
+ if (!pw)
+ pw = zebra_pw_add(zvrf, ifname, ZEBRA_ROUTE_STATIC, NULL);
+ VTY_PUSH_CONTEXT(PW_NODE, pw);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (no_pseudowire_if,
+ no_pseudowire_if_cmd,
+ "no pseudowire IFNAME",
+ NO_STR
+ "Static pseudowire configuration\n"
+ "Pseudowire name\n")
+{
+ struct zebra_vrf *zvrf;
+ struct zebra_pw *pw;
+ const char *ifname;
+ int idx = 0;
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ if (!zvrf)
+ return CMD_WARNING;
+
+ argv_find(argv, argc, "IFNAME", &idx);
+ ifname = argv[idx]->arg;
+
+ pw = zebra_pw_find(zvrf, ifname);
+ if (pw) {
+ if (pw->protocol != ZEBRA_ROUTE_STATIC) {
+ vty_out(vty, "%% Pseudowire is not static\n");
+ return CMD_WARNING;
+ }
+ zebra_pw_del(zvrf, pw);
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (pseudowire_labels,
+ pseudowire_labels_cmd,
+ "[no] mpls label local (16-1048575) remote (16-1048575)",
+ NO_STR
+ "MPLS L2VPN PW command\n"
+ "MPLS L2VPN static labels\n"
+ "Local pseudowire label\n"
+ "Local pseudowire label\n"
+ "Remote pseudowire label\n"
+ "Remote pseudowire label\n")
+{
+ VTY_DECLVAR_CONTEXT(zebra_pw, pw);
+ int idx = 0;
+ mpls_label_t local_label, remote_label;
+
+ if (argv_find(argv, argc, "no", &idx)) {
+ local_label = MPLS_NO_LABEL;
+ remote_label = MPLS_NO_LABEL;
+ } else {
+ argv_find(argv, argc, "local", &idx);
+ local_label = atoi(argv[idx + 1]->arg);
+ argv_find(argv, argc, "remote", &idx);
+ remote_label = atoi(argv[idx + 1]->arg);
+ }
+
+ zebra_pw_change(pw, pw->ifindex, pw->type, pw->af, &pw->nexthop,
+ local_label, remote_label, pw->flags, &pw->data);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (pseudowire_neighbor,
+ pseudowire_neighbor_cmd,
+ "[no] neighbor <A.B.C.D|X:X::X:X>",
+ NO_STR
+ "Specify the IPv4 or IPv6 address of the remote endpoint\n"
+ "IPv4 address\n"
+ "IPv6 address\n")
+{
+ VTY_DECLVAR_CONTEXT(zebra_pw, pw);
+ int idx = 0;
+ const char *address;
+ int af;
+ union g_addr nexthop;
+
+ af = AF_UNSPEC;
+ memset(&nexthop, 0, sizeof(nexthop));
+
+ if (!argv_find(argv, argc, "no", &idx)) {
+ argv_find(argv, argc, "neighbor", &idx);
+ address = argv[idx + 1]->arg;
+
+ if (inet_pton(AF_INET, address, &nexthop.ipv4) == 1)
+ af = AF_INET;
+ else if (inet_pton(AF_INET6, address, &nexthop.ipv6) == 1)
+ af = AF_INET6;
+ else {
+ vty_out(vty, "%% Malformed address\n");
+ return CMD_WARNING;
+ }
+ }
+
+ zebra_pw_change(pw, pw->ifindex, pw->type, af, &nexthop,
+ pw->local_label, pw->remote_label, pw->flags,
+ &pw->data);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (pseudowire_control_word,
+ pseudowire_control_word_cmd,
+ "[no] control-word <exclude|include>",
+ NO_STR
+ "Control-word options\n"
+ "Exclude control-word in pseudowire packets\n"
+ "Include control-word in pseudowire packets\n")
+{
+ VTY_DECLVAR_CONTEXT(zebra_pw, pw);
+ int idx = 0;
+ uint8_t flags = 0;
+
+ if (argv_find(argv, argc, "no", &idx))
+ flags = F_PSEUDOWIRE_CWORD;
+ else {
+ argv_find(argv, argc, "control-word", &idx);
+ if (argv[idx + 1]->text[0] == 'i')
+ flags = F_PSEUDOWIRE_CWORD;
+ }
+
+ zebra_pw_change(pw, pw->ifindex, pw->type, pw->af, &pw->nexthop,
+ pw->local_label, pw->remote_label, flags, &pw->data);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN (show_pseudowires,
+ show_pseudowires_cmd,
+ "show mpls pseudowires",
+ SHOW_STR
+ MPLS_STR
+ "Pseudowires\n")
+{
+ struct zebra_vrf *zvrf;
+ struct zebra_pw *pw;
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ if (!zvrf)
+ return 0;
+
+ vty_out(vty, "%-16s %-24s %-12s %-8s %-10s\n", "Interface", "Neighbor",
+ "Labels", "Protocol", "Status");
+
+ RB_FOREACH (pw, zebra_pw_head, &zvrf->pseudowires) {
+ char buf_nbr[INET6_ADDRSTRLEN];
+ char buf_labels[64];
+
+ inet_ntop(pw->af, &pw->nexthop, buf_nbr, sizeof(buf_nbr));
+
+ if (pw->local_label != MPLS_NO_LABEL
+ && pw->remote_label != MPLS_NO_LABEL)
+ snprintf(buf_labels, sizeof(buf_labels), "%u/%u",
+ pw->local_label, pw->remote_label);
+ else
+ snprintf(buf_labels, sizeof(buf_labels), "-");
+
+ vty_out(vty, "%-16s %-24s %-12s %-8s %-10s\n", pw->ifname,
+ (pw->af != AF_UNSPEC) ? buf_nbr : "-", buf_labels,
+ zebra_route_string(pw->protocol),
+ (zebra_pw_enabled(pw) && pw->status == PW_FORWARDING)
+ ? "UP"
+ : "DOWN");
+ }
+
+ return CMD_SUCCESS;
+}
+
+static void vty_show_mpls_pseudowire_detail(struct vty *vty)
+{
+ struct zebra_vrf *zvrf;
+ struct zebra_pw *pw;
+ struct route_entry *re;
+ struct nexthop *nexthop;
+ struct nexthop_group *nhg;
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ if (!zvrf)
+ return;
+
+ RB_FOREACH (pw, zebra_pw_head, &zvrf->pseudowires) {
+ char buf_nbr[INET6_ADDRSTRLEN];
+ char buf_nh[100];
+
+ vty_out(vty, "Interface: %s\n", pw->ifname);
+ inet_ntop(pw->af, &pw->nexthop, buf_nbr, sizeof(buf_nbr));
+ vty_out(vty, " Neighbor: %s\n",
+ (pw->af != AF_UNSPEC) ? buf_nbr : "-");
+ if (pw->local_label != MPLS_NO_LABEL)
+ vty_out(vty, " Local Label: %u\n", pw->local_label);
+ else
+ vty_out(vty, " Local Label: %s\n", "-");
+ if (pw->remote_label != MPLS_NO_LABEL)
+ vty_out(vty, " Remote Label: %u\n", pw->remote_label);
+ else
+ vty_out(vty, " Remote Label: %s\n", "-");
+ vty_out(vty, " Protocol: %s\n",
+ zebra_route_string(pw->protocol));
+ if (pw->protocol == ZEBRA_ROUTE_LDP)
+ vty_out(vty, " VC-ID: %u\n", pw->data.ldp.pwid);
+ vty_out(vty, " Status: %s \n",
+ (zebra_pw_enabled(pw) && pw->status == PW_FORWARDING)
+ ? "Up"
+ : "Down");
+ re = rib_match(family2afi(pw->af), SAFI_UNICAST, pw->vrf_id,
+ &pw->nexthop, NULL);
+ if (re == NULL)
+ continue;
+
+ nhg = rib_get_fib_nhg(re);
+ for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
+ snprintfrr(buf_nh, sizeof(buf_nh), "%pNHv",
+ nexthop);
+ vty_out(vty, " Next Hop: %s\n", buf_nh);
+ if (nexthop->nh_label)
+ vty_out(vty, " Next Hop label: %u\n",
+ nexthop->nh_label->label[0]);
+ else
+ vty_out(vty, " Next Hop label: %s\n",
+ "-");
+ }
+
+ /* Include any installed backups */
+ nhg = rib_get_fib_backup_nhg(re);
+ if (nhg == NULL)
+ continue;
+
+ for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
+ snprintfrr(buf_nh, sizeof(buf_nh), "%pNHv",
+ nexthop);
+ vty_out(vty, " Next Hop: %s\n", buf_nh);
+ if (nexthop->nh_label)
+ vty_out(vty, " Next Hop label: %u\n",
+ nexthop->nh_label->label[0]);
+ else
+ vty_out(vty, " Next Hop label: %s\n",
+ "-");
+ }
+ }
+}
+
+static void vty_show_mpls_pseudowire(struct zebra_pw *pw, json_object *json_pws)
+{
+ struct route_entry *re;
+ struct nexthop *nexthop;
+ struct nexthop_group *nhg;
+ char buf_nbr[INET6_ADDRSTRLEN];
+ char buf_nh[100];
+ json_object *json_pw = NULL;
+ json_object *json_nexthop = NULL;
+ json_object *json_nexthops = NULL;
+
+ json_nexthops = json_object_new_array();
+ json_pw = json_object_new_object();
+
+ json_object_string_add(json_pw, "interface", pw->ifname);
+ if (pw->af == AF_UNSPEC)
+ json_object_string_add(json_pw, "neighbor", "-");
+ else {
+ inet_ntop(pw->af, &pw->nexthop, buf_nbr, sizeof(buf_nbr));
+ json_object_string_add(json_pw, "neighbor", buf_nbr);
+ }
+ if (pw->local_label != MPLS_NO_LABEL)
+ json_object_int_add(json_pw, "localLabel", pw->local_label);
+ else
+ json_object_string_add(json_pw, "localLabel", "-");
+ if (pw->remote_label != MPLS_NO_LABEL)
+ json_object_int_add(json_pw, "remoteLabel", pw->remote_label);
+ else
+ json_object_string_add(json_pw, "remoteLabel", "-");
+ json_object_string_add(json_pw, "protocol",
+ zebra_route_string(pw->protocol));
+ if (pw->protocol == ZEBRA_ROUTE_LDP)
+ json_object_int_add(json_pw, "vcId", pw->data.ldp.pwid);
+ json_object_string_add(
+ json_pw, "Status",
+ (zebra_pw_enabled(pw) && pw->status == PW_FORWARDING) ? "Up"
+ : "Down");
+ re = rib_match(family2afi(pw->af), SAFI_UNICAST, pw->vrf_id,
+ &pw->nexthop, NULL);
+ if (re == NULL)
+ goto done;
+
+ nhg = rib_get_fib_nhg(re);
+ for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
+ json_nexthop = json_object_new_object();
+ snprintfrr(buf_nh, sizeof(buf_nh), "%pNHv", nexthop);
+ json_object_string_add(json_nexthop, "nexthop", buf_nh);
+ if (nexthop->nh_label)
+ json_object_int_add(
+ json_nexthop, "nhLabel",
+ nexthop->nh_label->label[0]);
+ else
+ json_object_string_add(json_nexthop, "nhLabel",
+ "-");
+
+ json_object_array_add(json_nexthops, json_nexthop);
+ }
+
+ /* Include installed backup nexthops also */
+ nhg = rib_get_fib_backup_nhg(re);
+ if (nhg == NULL)
+ goto done;
+
+ for (ALL_NEXTHOPS_PTR(nhg, nexthop)) {
+ json_nexthop = json_object_new_object();
+ snprintfrr(buf_nh, sizeof(buf_nh), "%pNHv", nexthop);
+ json_object_string_add(json_nexthop, "nexthop", buf_nh);
+ if (nexthop->nh_label)
+ json_object_int_add(
+ json_nexthop, "nhLabel",
+ nexthop->nh_label->label[0]);
+ else
+ json_object_string_add(json_nexthop, "nhLabel",
+ "-");
+
+ json_object_array_add(json_nexthops, json_nexthop);
+ }
+
+done:
+
+ json_object_object_add(json_pw, "nexthops", json_nexthops);
+ json_object_array_add(json_pws, json_pw);
+}
+
+static void vty_show_mpls_pseudowire_detail_json(struct vty *vty)
+{
+ json_object *json = NULL;
+ json_object *json_pws = NULL;
+ struct zebra_vrf *zvrf;
+ struct zebra_pw *pw;
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ if (!zvrf)
+ return;
+
+ json = json_object_new_object();
+ json_pws = json_object_new_array();
+ RB_FOREACH (pw, zebra_pw_head, &zvrf->pseudowires) {
+ vty_show_mpls_pseudowire(pw, json_pws);
+ }
+ json_object_object_add(json, "pw", json_pws);
+ vty_json(vty, json);
+}
+
+DEFUN(show_pseudowires_detail, show_pseudowires_detail_cmd,
+ "show mpls pseudowires detail [json]$json",
+ SHOW_STR MPLS_STR
+ "Pseudowires\n"
+ "Detailed output\n" JSON_STR)
+{
+ bool uj = use_json(argc, argv);
+
+ if (uj)
+ vty_show_mpls_pseudowire_detail_json(vty);
+ else
+ vty_show_mpls_pseudowire_detail(vty);
+
+ return CMD_SUCCESS;
+}
+
+/* Pseudowire configuration write function. */
+static int zebra_pw_config(struct vty *vty)
+{
+ int write = 0;
+ struct zebra_vrf *zvrf;
+ struct zebra_pw *pw;
+
+ zvrf = vrf_info_lookup(VRF_DEFAULT);
+ if (!zvrf)
+ return 0;
+
+ RB_FOREACH (pw, zebra_static_pw_head, &zvrf->static_pseudowires) {
+ vty_out(vty, "pseudowire %s\n", pw->ifname);
+ if (pw->local_label != MPLS_NO_LABEL
+ && pw->remote_label != MPLS_NO_LABEL)
+ vty_out(vty, " mpls label local %u remote %u\n",
+ pw->local_label, pw->remote_label);
+ else
+ vty_out(vty,
+ " ! Incomplete config, specify the static MPLS labels\n");
+
+ if (pw->af != AF_UNSPEC) {
+ char buf[INET6_ADDRSTRLEN];
+ inet_ntop(pw->af, &pw->nexthop, buf, sizeof(buf));
+ vty_out(vty, " neighbor %s\n", buf);
+ } else
+ vty_out(vty,
+ " ! Incomplete config, specify a neighbor address\n");
+
+ if (!(pw->flags & F_PSEUDOWIRE_CWORD))
+ vty_out(vty, " control-word exclude\n");
+
+ vty_out(vty, "exit\n");
+ vty_out(vty, "!\n");
+ write = 1;
+ }
+
+ return write;
+}
+
+static int zebra_pw_config(struct vty *vty);
+static struct cmd_node pw_node = {
+ .name = "pw",
+ .node = PW_NODE,
+ .parent_node = CONFIG_NODE,
+ .prompt = "%s(config-pw)# ",
+ .config_write = zebra_pw_config,
+};
+
+void zebra_pw_vty_init(void)
+{
+ install_node(&pw_node);
+ install_default(PW_NODE);
+
+ install_element(CONFIG_NODE, &pseudowire_if_cmd);
+ install_element(CONFIG_NODE, &no_pseudowire_if_cmd);
+ install_element(PW_NODE, &pseudowire_labels_cmd);
+ install_element(PW_NODE, &pseudowire_neighbor_cmd);
+ install_element(PW_NODE, &pseudowire_control_word_cmd);
+
+ install_element(VIEW_NODE, &show_pseudowires_cmd);
+ install_element(VIEW_NODE, &show_pseudowires_detail_cmd);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 02:02:44 +0000