#include "log.h"
#include "memory.h"
#include "thread.h"
+#include "command.h"
#include "vrf.h"
#include "zebra/debug.h"
#include "zebra/rib.h"
#include "zebra/zserv.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_HOOK(pw_install, (struct zebra_pw *pw), (pw))
-DEFINE_HOOK(pw_uninstall, (struct zebra_pw *pw), (pw))
+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
extern struct zebra_t zebrad;
+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 int zebra_pw_install_retry(struct thread *);
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)
+ const struct zebra_pw *b)
{
return (strcmp(a->ifname, b->ifname));
}
-RB_GENERATE(zebra_pw_head, zebra_pw, entry, zebra_pw_compare)
+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)
pw->protocol = protocol;
pw->vrf_id = zvrf_id(zvrf);
pw->client = client;
- pw->status = PW_STATUS_UP;
+ pw->status = PW_STATUS_DOWN;
+ 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;
}
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_STATUS_UP)
hook_call(pw_uninstall, pw);
/* 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);
}
uint32_t remote_label, uint8_t flags,
union pw_protocol_fields *data)
{
+ zebra_deregister_rnh_pseudowire(pw->vrf_id, pw);
+
pw->ifindex = ifindex;
pw->type = type;
pw->af = af;
pw->flags = flags;
pw->data = *data;
- if (pw->enabled)
- zebra_pw_update(pw);
+ if (zebra_pw_enabled(pw))
+ zebra_register_rnh_pseudowire(pw->vrf_id, pw);
else
zebra_pw_uninstall(pw);
}
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);
+ /* wait for NHT and try again later */
} else {
/*
* Install or reinstall the pseudowire (e.g. to update
/* ignore any possible error */
hook_call(pw_uninstall, pw);
- if (pw->enabled)
+ if (zebra_pw_enabled(pw))
zebra_pw_update_status(pw, PW_STATUS_DOWN);
}
void zebra_pw_install_failure(struct zebra_pw *pw)
{
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);
+ 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_TIMER_OFF(pw->install_retry_timer);
- pw->install_retry_timer =
- thread_add_timer(zebrad.master, zebra_pw_install_retry,
- pw, PW_INSTALL_RETRY_INTERVAL);
+ thread_add_timer(zebrad.master, zebra_pw_install_retry, pw,
+ PW_INSTALL_RETRY_INTERVAL, &pw->install_retry_timer);
zebra_pw_update_status(pw, PW_STATUS_DOWN);
}
static int zebra_pw_check_reachability(struct zebra_pw *pw)
{
- struct rib *rib;
- struct nexthop *nexthop, *tnexthop;
- int recursing;
+ struct route_entry *re;
+ struct nexthop *nexthop;
/* TODO: consider GRE/L2TPv3 tunnels in addition to MPLS LSPs */
/* find route to the remote end of the pseudowire */
- rib = rib_match(family2afi(pw->af), SAFI_UNICAST, pw->vrf_id,
- &pw->nexthop, NULL);
- if (!rib) {
+ re = rib_match(family2afi(pw->af), SAFI_UNICAST, pw->vrf_id,
+ &pw->nexthop, NULL);
+ if (!re) {
if (IS_ZEBRA_DEBUG_PW)
- zlog_warn("%s: no route found for %s", __func__,
- pw->ifname);
+ zlog_debug("%s: no route found for %s", __func__,
+ pw->ifname);
return -1;
}
* Need to ensure that there's a label binding for all nexthops.
* Otherwise, ECMP for this route could render the pseudowire unusable.
*/
- for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing)) {
+ for (ALL_NEXTHOPS(re->ng, nexthop)) {
if (!nexthop->nh_label) {
if (IS_ZEBRA_DEBUG_PW)
- zlog_warn("%s: unlabeled route for %s",
- __func__, pw->ifname);
+ zlog_debug("%s: unlabeled route for %s",
+ __func__, pw->ifname);
return -1;
}
}
return 0;
}
-void
-zebra_pw_client_close(struct zserv *client)
+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) {
+ RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
zvrf = vrf->info;
- RB_FOREACH_SAFE(pw, zebra_pw_head, &zvrf->pseudowires, tmp) {
+ 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(&zvrf->pseudowires);
+ 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 ((pw = RB_ROOT(&zvrf->pseudowires)) != NULL)
+ 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_STATUS_UP)
+ ? "UP"
+ : "DOWN");
+ }
+
+ 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, "!\n");
+ write = 1;
+ }
+
+ return write;
+}
+
+static struct cmd_node pw_node = {
+ PW_NODE, "%s(config-pw)# ", 1,
+};
+
+void zebra_pw_vty_init(void)
+{
+ install_node(&pw_node, zebra_pw_config);
+ 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);
}
projects / mirror_frr.git / blobdiff