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frr/lib/if.c

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/*
* Interface functions.
* Copyright (C) 1997, 98 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 "linklist.h"
#include "vector.h"
#include "lib_errors.h"
#include "vty.h"
#include "command.h"
#include "vrf.h"
#include "if.h"
#include "sockunion.h"
#include "prefix.h"
#include "memory.h"
#include "table.h"
#include "buffer.h"
#include "log.h"
#include "northbound_cli.h"
#ifndef VTYSH_EXTRACT_PL
#include "lib/if_clippy.c"
#endif
DEFINE_MTYPE_STATIC(LIB, IF, "Interface");
DEFINE_MTYPE_STATIC(LIB, CONNECTED, "Connected");
DEFINE_MTYPE_STATIC(LIB, NBR_CONNECTED, "Neighbor Connected");
DEFINE_MTYPE(LIB, CONNECTED_LABEL, "Connected interface label");
DEFINE_MTYPE_STATIC(LIB, IF_LINK_PARAMS, "Informational Link Parameters");
static void if_set_name(struct interface *ifp, const char *name);
static struct interface *if_lookup_by_ifindex(ifindex_t ifindex,
vrf_id_t vrf_id);
static int if_cmp_func(const struct interface *, const struct interface *);
static int if_cmp_index_func(const struct interface *ifp1,
const struct interface *ifp2);
RB_GENERATE(if_name_head, interface, name_entry, if_cmp_func);
RB_GENERATE(if_index_head, interface, index_entry, if_cmp_index_func);
DEFINE_QOBJ_TYPE(interface);
DEFINE_HOOK(if_add, (struct interface * ifp), (ifp));
DEFINE_KOOH(if_del, (struct interface * ifp), (ifp));
static struct interface_master{
int (*create_hook)(struct interface *ifp);
int (*up_hook)(struct interface *ifp);
int (*down_hook)(struct interface *ifp);
int (*destroy_hook)(struct interface *ifp);
} ifp_master = { 0, };
/* Compare interface names, returning an integer greater than, equal to, or
* less than 0, (following the strcmp convention), according to the
* relationship between ifp1 and ifp2. Interface names consist of an
* alphabetic prefix and a numeric suffix. The primary sort key is
* lexicographic by name, and then numeric by number. No number sorts
* before all numbers. Examples: de0 < de1, de100 < fxp0 < xl0, devpty <
* devpty0, de0 < del0
*/
int if_cmp_name_func(const char *p1, const char *p2)
{
unsigned int l1, l2;
long int x1, x2;
int res;
while (*p1 && *p2) {
/* look up to any number */
l1 = strcspn(p1, "0123456789");
l2 = strcspn(p2, "0123456789");
/* name lengths are different -> compare names */
if (l1 != l2)
return (strcmp(p1, p2));
/* Note that this relies on all numbers being less than all
* letters, so
* that de0 < del0.
*/
res = strncmp(p1, p2, l1);
/* names are different -> compare them */
if (res)
return res;
/* with identical name part, go to numeric part */
p1 += l1;
p2 += l1;
if (!*p1 && !*p2)
return 0;
if (!*p1)
return -1;
if (!*p2)
return 1;
x1 = strtol(p1, (char **)&p1, 10);
x2 = strtol(p2, (char **)&p2, 10);
/* let's compare numbers now */
if (x1 < x2)
return -1;
if (x1 > x2)
return 1;
/* numbers were equal, lets do it again..
(it happens with name like "eth123.456:789") */
}
if (*p1)
return 1;
if (*p2)
return -1;
return 0;
}
static int if_cmp_func(const struct interface *ifp1,
const struct interface *ifp2)
{
return if_cmp_name_func(ifp1->name, ifp2->name);
}
static int if_cmp_index_func(const struct interface *ifp1,
const struct interface *ifp2)
{
if (ifp1->ifindex == ifp2->ifindex)
return 0;
else if (ifp1->ifindex > ifp2->ifindex)
return 1;
else
return -1;
}
static void ifp_connected_free(void *arg)
{
struct connected *c = arg;
connected_free(&c);
}
/* Create new interface structure. */
static struct interface *if_new(struct vrf *vrf)
{
struct interface *ifp;
assert(vrf);
ifp = XCALLOC(MTYPE_IF, sizeof(struct interface));
ifp->ifindex = IFINDEX_INTERNAL;
ifp->name[0] = '\0';
ifp->vrf = vrf;
ifp->vrf_id = vrf->vrf_id;
ifp->connected = list_new();
ifp->connected->del = ifp_connected_free;
ifp->nbr_connected = list_new();
ifp->nbr_connected->del = (void (*)(void *))nbr_connected_free;
/* Enable Link-detection by default */
SET_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION);
QOBJ_REG(ifp, interface);
return ifp;
}
void if_new_via_zapi(struct interface *ifp)
{
if (ifp_master.create_hook)
(*ifp_master.create_hook)(ifp);
}
void if_destroy_via_zapi(struct interface *ifp)
{
if (ifp_master.destroy_hook)
(*ifp_master.destroy_hook)(ifp);
ifp->oldifindex = ifp->ifindex;
if_set_index(ifp, IFINDEX_INTERNAL);
if (!ifp->configured)
if_delete(&ifp);
}
void if_up_via_zapi(struct interface *ifp)
{
if (ifp_master.up_hook)
(*ifp_master.up_hook)(ifp);
}
void if_down_via_zapi(struct interface *ifp)
{
if (ifp_master.down_hook)
(*ifp_master.down_hook)(ifp);
}
static struct interface *if_create_name(const char *name, struct vrf *vrf)
{
struct interface *ifp;
ifp = if_new(vrf);
if_set_name(ifp, name);
hook_call(if_add, ifp);
return ifp;
}
/* Create new interface structure. */
void if_update_to_new_vrf(struct interface *ifp, vrf_id_t vrf_id)
{
struct vrf *old_vrf, *vrf;
/* remove interface from old master vrf list */
old_vrf = ifp->vrf;
if (ifp->name[0] != '\0')
IFNAME_RB_REMOVE(old_vrf, ifp);
if (ifp->ifindex != IFINDEX_INTERNAL)
IFINDEX_RB_REMOVE(old_vrf, ifp);
ifp->vrf_id = vrf_id;
vrf = vrf_get(ifp->vrf_id, NULL);
ifp->vrf = vrf;
if (ifp->name[0] != '\0')
IFNAME_RB_INSERT(vrf, ifp);
if (ifp->ifindex != IFINDEX_INTERNAL)
IFINDEX_RB_INSERT(vrf, ifp);
/*
* HACK: Change the interface VRF in the running configuration directly,
* bypassing the northbound layer. This is necessary to avoid deleting
* the interface and readding it in the new VRF, which would have
* several implications.
*/
if (!vrf_is_backend_netns() && yang_module_find("frr-interface")) {
struct lyd_node *if_dnode;
char oldpath[XPATH_MAXLEN];
char newpath[XPATH_MAXLEN];
snprintf(oldpath, sizeof(oldpath),
"/frr-interface:lib/interface[name='%s'][vrf='%s']",
ifp->name, old_vrf->name);
snprintf(newpath, sizeof(newpath),
"/frr-interface:lib/interface[name='%s'][vrf='%s']",
ifp->name, vrf->name);
if_dnode = yang_dnode_getf(running_config->dnode, "%s/vrf",
oldpath);
if (if_dnode) {
yang_dnode_change_leaf(if_dnode, vrf->name);
nb_running_move_tree(oldpath, newpath);
running_config->version++;
}
vty_update_xpath(oldpath, newpath);
}
}
/* Delete interface structure. */
void if_delete_retain(struct interface *ifp)
{
hook_call(if_del, ifp);
QOBJ_UNREG(ifp);
/* Free connected address list */
list_delete_all_node(ifp->connected);
/* Free connected nbr address list */
list_delete_all_node(ifp->nbr_connected);
}
/* Delete and free interface structure. */
void if_delete(struct interface **ifp)
{
struct interface *ptr = *ifp;
struct vrf *vrf = ptr->vrf;
IFNAME_RB_REMOVE(vrf, ptr);
if (ptr->ifindex != IFINDEX_INTERNAL)
IFINDEX_RB_REMOVE(vrf, ptr);
if (!vrf_is_enabled(vrf))
vrf_delete(vrf);
if_delete_retain(ptr);
list_delete(&ptr->connected);
list_delete(&ptr->nbr_connected);
if_link_params_free(ptr);
XFREE(MTYPE_TMP, ptr->desc);
XFREE(MTYPE_IF, ptr);
*ifp = NULL;
}
/* Used only internally to check within VRF only */
static struct interface *if_lookup_by_ifindex(ifindex_t ifindex,
vrf_id_t vrf_id)
{
struct vrf *vrf;
struct interface if_tmp;
vrf = vrf_lookup_by_id(vrf_id);
if (!vrf)
return NULL;
if_tmp.ifindex = ifindex;
return RB_FIND(if_index_head, &vrf->ifaces_by_index, &if_tmp);
}
/* Interface existence check by index. */
struct interface *if_lookup_by_index(ifindex_t ifindex, vrf_id_t vrf_id)
{
switch (vrf_get_backend()) {
case VRF_BACKEND_UNKNOWN:
case VRF_BACKEND_NETNS:
return(if_lookup_by_ifindex(ifindex, vrf_id));
case VRF_BACKEND_VRF_LITE:
return(if_lookup_by_index_all_vrf(ifindex));
}
return NULL;
}
/* Interface existence check by index. */
struct interface *if_vrf_lookup_by_index_next(ifindex_t ifindex,
vrf_id_t vrf_id)
{
struct vrf *vrf = vrf_lookup_by_id(vrf_id);
struct interface *tmp_ifp;
bool found = false;
if (!vrf)
return NULL;
if (ifindex == 0) {
tmp_ifp = RB_MIN(if_index_head, &vrf->ifaces_by_index);
/* skip the vrf interface */
if (tmp_ifp && if_is_vrf(tmp_ifp))
ifindex = tmp_ifp->ifindex;
else
return tmp_ifp;
}
RB_FOREACH (tmp_ifp, if_index_head, &vrf->ifaces_by_index) {
if (found) {
/* skip the vrf interface */
if (tmp_ifp && if_is_vrf(tmp_ifp))
continue;
else
return tmp_ifp;
}
if (tmp_ifp->ifindex == ifindex)
found = true;
}
return NULL;
}
const char *ifindex2ifname(ifindex_t ifindex, vrf_id_t vrf_id)
{
struct interface *ifp;
return ((ifp = if_lookup_by_index(ifindex, vrf_id)) != NULL)
? ifp->name
: "unknown";
}
ifindex_t ifname2ifindex(const char *name, vrf_id_t vrf_id)
{
struct interface *ifp;
return ((ifp = if_lookup_by_name(name, vrf_id)) != NULL)
? ifp->ifindex
: IFINDEX_INTERNAL;
}
/* Interface existence check by interface name. */
struct interface *if_lookup_by_name(const char *name, vrf_id_t vrf_id)
{
struct vrf *vrf = vrf_lookup_by_id(vrf_id);
struct interface if_tmp;
if (!vrf || !name
|| strnlen(name, INTERFACE_NAMSIZ) == INTERFACE_NAMSIZ)
return NULL;
strlcpy(if_tmp.name, name, sizeof(if_tmp.name));
return RB_FIND(if_name_head, &vrf->ifaces_by_name, &if_tmp);
}
struct interface *if_lookup_by_name_vrf(const char *name, struct vrf *vrf)
{
struct interface if_tmp;
if (!name || strnlen(name, INTERFACE_NAMSIZ) == INTERFACE_NAMSIZ)
return NULL;
strlcpy(if_tmp.name, name, sizeof(if_tmp.name));
return RB_FIND(if_name_head, &vrf->ifaces_by_name, &if_tmp);
}
struct interface *if_lookup_by_name_all_vrf(const char *name)
{
struct vrf *vrf;
struct interface *ifp;
if (!name || strnlen(name, INTERFACE_NAMSIZ) == INTERFACE_NAMSIZ)
return NULL;
RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
ifp = if_lookup_by_name_vrf(name, vrf);
if (ifp)
return ifp;
}
return NULL;
}
struct interface *if_lookup_by_index_all_vrf(ifindex_t ifindex)
{
struct vrf *vrf;
struct interface *ifp;
if (ifindex == IFINDEX_INTERNAL)
return NULL;
RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
ifp = if_lookup_by_ifindex(ifindex, vrf->vrf_id);
if (ifp)
return ifp;
}
return NULL;
}
/* Lookup interface by IP address. */
struct interface *if_lookup_exact_address(const void *src, int family,
vrf_id_t vrf_id)
{
struct vrf *vrf = vrf_lookup_by_id(vrf_id);
struct listnode *cnode;
struct interface *ifp;
struct prefix *p;
struct connected *c;
FOR_ALL_INTERFACES (vrf, ifp) {
for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) {
p = c->address;
if (p && (p->family == family)) {
if (family == AF_INET) {
if (IPV4_ADDR_SAME(
&p->u.prefix4,
(struct in_addr *)src))
return ifp;
} else if (family == AF_INET6) {
if (IPV6_ADDR_SAME(
&p->u.prefix6,
(struct in6_addr *)src))
return ifp;
}
}
}
}
return NULL;
}
/* Lookup interface by IP address. */
struct connected *if_lookup_address(const void *matchaddr, int family,
vrf_id_t vrf_id)
{
struct vrf *vrf = vrf_lookup_by_id(vrf_id);
struct prefix addr;
int bestlen = 0;
struct listnode *cnode;
struct interface *ifp;
struct connected *c;
struct connected *match;
if (family == AF_INET) {
addr.family = AF_INET;
addr.u.prefix4 = *((struct in_addr *)matchaddr);
addr.prefixlen = IPV4_MAX_BITLEN;
} else if (family == AF_INET6) {
addr.family = AF_INET6;
addr.u.prefix6 = *((struct in6_addr *)matchaddr);
addr.prefixlen = IPV6_MAX_BITLEN;
}
match = NULL;
FOR_ALL_INTERFACES (vrf, ifp) {
for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) {
if (c->address && (c->address->family == AF_INET)
&& prefix_match(CONNECTED_PREFIX(c), &addr)
&& (c->address->prefixlen > bestlen)) {
bestlen = c->address->prefixlen;
match = c;
}
}
}
return match;
}
/* Lookup interface by prefix */
struct interface *if_lookup_prefix(const struct prefix *prefix, vrf_id_t vrf_id)
{
struct vrf *vrf = vrf_lookup_by_id(vrf_id);
struct listnode *cnode;
struct interface *ifp;
struct connected *c;
FOR_ALL_INTERFACES (vrf, ifp) {
for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) {
if (prefix_cmp(c->address, prefix) == 0) {
return ifp;
}
}
}
return NULL;
}
size_t if_lookup_by_hwaddr(const uint8_t *hw_addr, size_t addrsz,
struct interface ***result, vrf_id_t vrf_id)
{
struct vrf *vrf = vrf_lookup_by_id(vrf_id);
struct list *rs = list_new();
struct interface *ifp;
FOR_ALL_INTERFACES (vrf, ifp) {
if (ifp->hw_addr_len == (int)addrsz
&& !memcmp(hw_addr, ifp->hw_addr, addrsz))
listnode_add(rs, ifp);
}
if (rs->count) {
*result = XCALLOC(MTYPE_TMP,
sizeof(struct interface *) * rs->count);
list_to_array(rs, (void **)*result, rs->count);
}
int count = rs->count;
list_delete(&rs);
return count;
}
/* Get interface by name if given name interface doesn't exist create
one. */
struct interface *if_get_by_name(const char *name, vrf_id_t vrf_id,
const char *vrf_name)
{
struct interface *ifp = NULL;
struct vrf *vrf;
switch (vrf_get_backend()) {
case VRF_BACKEND_UNKNOWN:
case VRF_BACKEND_NETNS:
vrf = vrf_get(vrf_id, vrf_name);
assert(vrf);
ifp = if_lookup_by_name_vrf(name, vrf);
if (ifp) {
/* If it came from the kernel or by way of zclient,
* believe it and update the ifp accordingly.
*/
if (ifp->vrf_id != vrf_id && vrf_id != VRF_UNKNOWN)
if_update_to_new_vrf(ifp, vrf_id);
return ifp;
}
break;
case VRF_BACKEND_VRF_LITE:
ifp = if_lookup_by_name_all_vrf(name);
if (ifp) {
/* If it came from the kernel or by way of zclient,
* believe it and update the ifp accordingly.
*/
if (ifp->vrf_id != vrf_id && vrf_id != VRF_UNKNOWN)
if_update_to_new_vrf(ifp, vrf_id);
return ifp;
}
vrf = vrf_get(vrf_id, vrf_name);
assert(vrf);
break;
default:
return NULL;
}
return if_create_name(name, vrf);
}
int if_set_index(struct interface *ifp, ifindex_t ifindex)
{
if (ifp->ifindex == ifindex)
return 0;
/*
* If there is already an interface with this ifindex, we will collide
* on insertion, so don't even try.
*/
if (if_lookup_by_ifindex(ifindex, ifp->vrf_id))
return -1;
if (ifp->ifindex != IFINDEX_INTERNAL)
IFINDEX_RB_REMOVE(ifp->vrf, ifp);
ifp->ifindex = ifindex;
if (ifp->ifindex != IFINDEX_INTERNAL) {
/*
* This should never happen, since we checked if there was
* already an interface with the desired ifindex at the top of
* the function. Nevertheless.
*/
if (IFINDEX_RB_INSERT(ifp->vrf, ifp))
return -1;
}
return 0;
}
static void if_set_name(struct interface *ifp, const char *name)
{
if (if_cmp_name_func(ifp->name, name) == 0)
return;
if (ifp->name[0] != '\0')
IFNAME_RB_REMOVE(ifp->vrf, ifp);
strlcpy(ifp->name, name, sizeof(ifp->name));
if (ifp->name[0] != '\0')
IFNAME_RB_INSERT(ifp->vrf, ifp);
}
/* Does interface up ? */
int if_is_up(const struct interface *ifp)
{
return ifp->flags & IFF_UP;
}
/* Is interface running? */
int if_is_running(const struct interface *ifp)
{
return ifp->flags & IFF_RUNNING;
}
/* Is the interface operative, eg. either UP & RUNNING
or UP & !ZEBRA_INTERFACE_LINK_DETECTION and
if ptm checking is enabled, then ptm check has passed */
int if_is_operative(const struct interface *ifp)
{
return ((ifp->flags & IFF_UP)
&& (((ifp->flags & IFF_RUNNING)
&& (ifp->ptm_status || !ifp->ptm_enable))
|| !CHECK_FLAG(ifp->status,
ZEBRA_INTERFACE_LINKDETECTION)));
}
/* Is the interface operative, eg. either UP & RUNNING
or UP & !ZEBRA_INTERFACE_LINK_DETECTION, without PTM check */
int if_is_no_ptm_operative(const struct interface *ifp)
{
return ((ifp->flags & IFF_UP)
&& ((ifp->flags & IFF_RUNNING)
|| !CHECK_FLAG(ifp->status,
ZEBRA_INTERFACE_LINKDETECTION)));
}
/* Is this loopback interface ? */
int if_is_loopback(const struct interface *ifp)
{
/* XXX: Do this better, eg what if IFF_WHATEVER means X on platform M
* but Y on platform N?
*/
return (ifp->flags & (IFF_LOOPBACK | IFF_NOXMIT | IFF_VIRTUAL));
}
/* Check interface is VRF */
int if_is_vrf(const struct interface *ifp)
{
return CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK);
}
bool if_is_loopback_or_vrf(const struct interface *ifp)
{
if (if_is_loopback(ifp) || if_is_vrf(ifp))
return true;
return false;
}
/* Does this interface support broadcast ? */
int if_is_broadcast(const struct interface *ifp)
{
return ifp->flags & IFF_BROADCAST;
}
/* Does this interface support broadcast ? */
int if_is_pointopoint(const struct interface *ifp)
{
return ifp->flags & IFF_POINTOPOINT;
}
/* Does this interface support multicast ? */
int if_is_multicast(const struct interface *ifp)
{
return ifp->flags & IFF_MULTICAST;
}
/* Printout flag information into log */
const char *if_flag_dump(unsigned long flag)
{
int separator = 0;
static char logbuf[BUFSIZ];
#define IFF_OUT_LOG(X, STR) \
if (flag & (X)) { \
if (separator) \
strlcat(logbuf, ",", sizeof(logbuf)); \
else \
separator = 1; \
strlcat(logbuf, STR, sizeof(logbuf)); \
}
strlcpy(logbuf, "<", BUFSIZ);
IFF_OUT_LOG(IFF_UP, "UP");
IFF_OUT_LOG(IFF_BROADCAST, "BROADCAST");
IFF_OUT_LOG(IFF_DEBUG, "DEBUG");
IFF_OUT_LOG(IFF_LOOPBACK, "LOOPBACK");
IFF_OUT_LOG(IFF_POINTOPOINT, "POINTOPOINT");
IFF_OUT_LOG(IFF_NOTRAILERS, "NOTRAILERS");
IFF_OUT_LOG(IFF_RUNNING, "RUNNING");
IFF_OUT_LOG(IFF_NOARP, "NOARP");
IFF_OUT_LOG(IFF_PROMISC, "PROMISC");
IFF_OUT_LOG(IFF_ALLMULTI, "ALLMULTI");
IFF_OUT_LOG(IFF_OACTIVE, "OACTIVE");
IFF_OUT_LOG(IFF_SIMPLEX, "SIMPLEX");
IFF_OUT_LOG(IFF_LINK0, "LINK0");
IFF_OUT_LOG(IFF_LINK1, "LINK1");
IFF_OUT_LOG(IFF_LINK2, "LINK2");
IFF_OUT_LOG(IFF_MULTICAST, "MULTICAST");
IFF_OUT_LOG(IFF_NOXMIT, "NOXMIT");
IFF_OUT_LOG(IFF_NORTEXCH, "NORTEXCH");
IFF_OUT_LOG(IFF_VIRTUAL, "VIRTUAL");
IFF_OUT_LOG(IFF_IPV4, "IPv4");
IFF_OUT_LOG(IFF_IPV6, "IPv6");
strlcat(logbuf, ">", sizeof(logbuf));
return logbuf;
#undef IFF_OUT_LOG
}
/* For debugging */
static void if_dump(const struct interface *ifp)
{
struct listnode *node;
struct connected *c __attribute__((unused));
for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, c))
zlog_info(
"Interface %s vrf %s(%u) index %d metric %d mtu %d mtu6 %d %s",
ifp->name, ifp->vrf->name, ifp->vrf_id, ifp->ifindex,
ifp->metric, ifp->mtu, ifp->mtu6,
if_flag_dump(ifp->flags));
}
/* Interface printing for all interface. */
void if_dump_all(void)
{
struct vrf *vrf;
void *ifp;
RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id)
FOR_ALL_INTERFACES (vrf, ifp)
if_dump(ifp);
}
/* Allocate connected structure. */
struct connected *connected_new(void)
{
return XCALLOC(MTYPE_CONNECTED, sizeof(struct connected));
}
/* Allocate nbr connected structure. */
struct nbr_connected *nbr_connected_new(void)
{
return XCALLOC(MTYPE_NBR_CONNECTED, sizeof(struct nbr_connected));
}
/* Free connected structure. */
void connected_free(struct connected **connected)
{
struct connected *ptr = *connected;
prefix_free(&ptr->address);
prefix_free(&ptr->destination);
XFREE(MTYPE_CONNECTED_LABEL, ptr->label);
XFREE(MTYPE_CONNECTED, ptr);
*connected = NULL;
}
/* Free nbr connected structure. */
void nbr_connected_free(struct nbr_connected *connected)
{
if (connected->address)
prefix_free(&connected->address);
XFREE(MTYPE_NBR_CONNECTED, connected);
}
/* If same interface nbr address already exists... */
struct nbr_connected *nbr_connected_check(struct interface *ifp,
struct prefix *p)
{
struct nbr_connected *ifc;
struct listnode *node;
for (ALL_LIST_ELEMENTS_RO(ifp->nbr_connected, node, ifc))
if (prefix_same(ifc->address, p))
return ifc;
return NULL;
}
/* Print if_addr structure. */
static void __attribute__((unused))
connected_log(struct connected *connected, char *str)
{
struct prefix *p;
struct interface *ifp;
char logbuf[BUFSIZ];
char buf[BUFSIZ];
ifp = connected->ifp;
p = connected->address;
snprintf(logbuf, sizeof(logbuf), "%s interface %s vrf %s(%u) %s %pFX ",
str, ifp->name, ifp->vrf->name, ifp->vrf_id,
prefix_family_str(p), p);
p = connected->destination;
if (p) {
strlcat(logbuf, inet_ntop(p->family, &p->u.prefix, buf, BUFSIZ),
BUFSIZ);
}
zlog_info("%s", logbuf);
}
/* Print if_addr structure. */
static void __attribute__((unused))
nbr_connected_log(struct nbr_connected *connected, char *str)
{
struct prefix *p;
struct interface *ifp;
char logbuf[BUFSIZ];
ifp = connected->ifp;
p = connected->address;
snprintf(logbuf, sizeof(logbuf), "%s interface %s %s %pFX ", str,
ifp->name, prefix_family_str(p), p);
zlog_info("%s", logbuf);
}
/* If two connected address has same prefix return 1. */
static int connected_same_prefix(const struct prefix *p1,
const struct prefix *p2)
{
if (p1->family == p2->family) {
if (p1->family == AF_INET
&& IPV4_ADDR_SAME(&p1->u.prefix4, &p2->u.prefix4))
return 1;
if (p1->family == AF_INET6
&& IPV6_ADDR_SAME(&p1->u.prefix6, &p2->u.prefix6))
return 1;
}
return 0;
}
/* count the number of connected addresses that are in the given family */
unsigned int connected_count_by_family(struct interface *ifp, int family)
{
struct listnode *cnode;
struct connected *connected;
unsigned int cnt = 0;
for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected))
if (connected->address->family == family)
cnt++;
return cnt;
}
struct connected *connected_lookup_prefix_exact(struct interface *ifp,
const struct prefix *p)
{
struct listnode *node;
struct listnode *next;
struct connected *ifc;
for (node = listhead(ifp->connected); node; node = next) {
ifc = listgetdata(node);
next = node->next;
if (connected_same_prefix(ifc->address, p))
return ifc;
}
return NULL;
}
struct connected *connected_delete_by_prefix(struct interface *ifp,
struct prefix *p)
{
struct listnode *node;
struct listnode *next;
struct connected *ifc;
/* In case of same prefix come, replace it with new one. */
for (node = listhead(ifp->connected); node; node = next) {
ifc = listgetdata(node);
next = node->next;
if (connected_same_prefix(ifc->address, p)) {
listnode_delete(ifp->connected, ifc);
return ifc;
}
}
return NULL;
}
/* Find the address on our side that will be used when packets
are sent to dst. */
struct connected *connected_lookup_prefix(struct interface *ifp,
const struct prefix *addr)
{
struct listnode *cnode;
struct connected *c;
struct connected *match;
match = NULL;
for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) {
if (c->address && (c->address->family == addr->family)
&& prefix_match(CONNECTED_PREFIX(c), addr)
&& (!match
|| (c->address->prefixlen > match->address->prefixlen)))
match = c;
}
return match;
}
struct connected *connected_add_by_prefix(struct interface *ifp,
struct prefix *p,
struct prefix *destination)
{
struct connected *ifc;
/* Allocate new connected address. */
ifc = connected_new();
ifc->ifp = ifp;
/* Fetch interface address */
ifc->address = prefix_new();
memcpy(ifc->address, p, sizeof(struct prefix));
/* Fetch dest address */
if (destination) {
ifc->destination = prefix_new();
memcpy(ifc->destination, destination, sizeof(struct prefix));
}
/* Add connected address to the interface. */
listnode_add(ifp->connected, ifc);
return ifc;
}
struct connected *connected_get_linklocal(struct interface *ifp)
{
struct listnode *n;
struct connected *c = NULL;
for (ALL_LIST_ELEMENTS_RO(ifp->connected, n, c)) {
if (c->address->family == AF_INET6
&& IN6_IS_ADDR_LINKLOCAL(&c->address->u.prefix6))
break;
}
return c;
}
void if_terminate(struct vrf *vrf)
{
struct interface *ifp;
while (!RB_EMPTY(if_name_head, &vrf->ifaces_by_name)) {
ifp = RB_ROOT(if_name_head, &vrf->ifaces_by_name);
if (ifp->node) {
ifp->node->info = NULL;
route_unlock_node(ifp->node);
}
if_delete(&ifp);
}
}
const char *if_link_type_str(enum zebra_link_type llt)
{
switch (llt) {
#define llts(T,S) case (T): return (S)
llts(ZEBRA_LLT_UNKNOWN, "Unknown");
llts(ZEBRA_LLT_ETHER, "Ethernet");
llts(ZEBRA_LLT_EETHER, "Experimental Ethernet");
llts(ZEBRA_LLT_AX25, "AX.25 Level 2");
llts(ZEBRA_LLT_PRONET, "PROnet token ring");
llts(ZEBRA_LLT_IEEE802, "IEEE 802.2 Ethernet/TR/TB");
llts(ZEBRA_LLT_ARCNET, "ARCnet");
llts(ZEBRA_LLT_APPLETLK, "AppleTalk");
llts(ZEBRA_LLT_DLCI, "Frame Relay DLCI");
llts(ZEBRA_LLT_ATM, "ATM");
llts(ZEBRA_LLT_METRICOM, "Metricom STRIP");
llts(ZEBRA_LLT_IEEE1394, "IEEE 1394 IPv4");
llts(ZEBRA_LLT_EUI64, "EUI-64");
llts(ZEBRA_LLT_INFINIBAND, "InfiniBand");
llts(ZEBRA_LLT_SLIP, "SLIP");
llts(ZEBRA_LLT_CSLIP, "Compressed SLIP");
llts(ZEBRA_LLT_SLIP6, "SLIPv6");
llts(ZEBRA_LLT_CSLIP6, "Compressed SLIPv6");
llts(ZEBRA_LLT_RSRVD, "Reserved");
llts(ZEBRA_LLT_ADAPT, "Adapt");
llts(ZEBRA_LLT_ROSE, "ROSE packet radio");
llts(ZEBRA_LLT_X25, "CCITT X.25");
llts(ZEBRA_LLT_PPP, "PPP");
llts(ZEBRA_LLT_CHDLC, "Cisco HDLC");
llts(ZEBRA_LLT_RAWHDLC, "Raw HDLC");
llts(ZEBRA_LLT_LAPB, "LAPB");
llts(ZEBRA_LLT_IPIP, "IPIP Tunnel");
llts(ZEBRA_LLT_IPIP6, "IPIP6 Tunnel");
llts(ZEBRA_LLT_FRAD, "FRAD");
llts(ZEBRA_LLT_SKIP, "SKIP vif");
llts(ZEBRA_LLT_LOOPBACK, "Loopback");
llts(ZEBRA_LLT_LOCALTLK, "Localtalk");
llts(ZEBRA_LLT_FDDI, "FDDI");
llts(ZEBRA_LLT_SIT, "IPv6-in-IPv4 SIT");
llts(ZEBRA_LLT_IPDDP, "IP-in-DDP tunnel");
llts(ZEBRA_LLT_IPGRE, "GRE over IP");
llts(ZEBRA_LLT_IP6GRE, "GRE over IPv6");
llts(ZEBRA_LLT_PIMREG, "PIMSM registration");
llts(ZEBRA_LLT_HIPPI, "HiPPI");
llts(ZEBRA_LLT_ECONET, "Acorn Econet");
llts(ZEBRA_LLT_IRDA, "IrDA");
llts(ZEBRA_LLT_FCPP, "Fibre-Channel PtP");
llts(ZEBRA_LLT_FCAL, "Fibre-Channel Arbitrated Loop");
llts(ZEBRA_LLT_FCPL, "Fibre-Channel Public Loop");
llts(ZEBRA_LLT_FCFABRIC, "Fibre-Channel Fabric");
llts(ZEBRA_LLT_IEEE802_TR, "IEEE 802.2 Token Ring");
llts(ZEBRA_LLT_IEEE80211, "IEEE 802.11");
llts(ZEBRA_LLT_IEEE80211_RADIOTAP, "IEEE 802.11 Radiotap");
llts(ZEBRA_LLT_IEEE802154, "IEEE 802.15.4");
llts(ZEBRA_LLT_IEEE802154_PHY, "IEEE 802.15.4 Phy");
#undef llts
}
return NULL;
}
struct if_link_params *if_link_params_get(struct interface *ifp)
{
int i;
if (ifp->link_params != NULL)
return ifp->link_params;
struct if_link_params *iflp =
XCALLOC(MTYPE_IF_LINK_PARAMS, sizeof(struct if_link_params));
/* Set TE metric equal to standard metric */
iflp->te_metric = ifp->metric;
/* Compute default bandwidth based on interface */
iflp->default_bw =
((ifp->bandwidth ? ifp->bandwidth : DEFAULT_BANDWIDTH)
* TE_MEGA_BIT / TE_BYTE);
/* Set Max, Reservable and Unreserved Bandwidth */
iflp->max_bw = iflp->default_bw;
iflp->max_rsv_bw = iflp->default_bw;
for (i = 0; i < MAX_CLASS_TYPE; i++)
iflp->unrsv_bw[i] = iflp->default_bw;
/* Update Link parameters status */
iflp->lp_status =
LP_TE_METRIC | LP_MAX_BW | LP_MAX_RSV_BW | LP_UNRSV_BW;
/* Finally attach newly created Link Parameters */
ifp->link_params = iflp;
return iflp;
}
void if_link_params_free(struct interface *ifp)
{
XFREE(MTYPE_IF_LINK_PARAMS, ifp->link_params);
}
/* ----------- CLI commands ----------- */
/* Guess the VRF of an interface. */
static int vrfname_by_ifname(const char *ifname, const char **vrfname)
{
struct vrf *vrf;
struct interface *ifp;
int count = 0;
RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
FOR_ALL_INTERFACES (vrf, ifp) {
if (strmatch(ifp->name, ifname)) {
*vrfname = vrf->name;
count++;
}
}
}
return count;
}
/*
* XPath: /frr-interface:lib/interface
*/
DEFPY_YANG_NOSH (interface,
interface_cmd,
"interface IFNAME [vrf NAME$vrf_name]",
"Select an interface to configure\n"
"Interface's name\n"
VRF_CMD_HELP_STR)
{
char xpath_list[XPATH_MAXLEN];
struct interface *ifp;
struct vrf *vrf;
int ret, count;
/*
* This command requires special handling to maintain backward
* compatibility. If a VRF name is not specified, it means we're willing
* to accept any interface with the given name on any VRF. If no
* interface is found, then a new one should be created on the default
* VRF.
*/
if (vrf_is_backend_netns()) {
/*
* For backward compatibility, if the VRF name is not specified
* and there is exactly one interface with this name in the
* system, use its VRF. Otherwise fallback to the default VRF.
*/
if (!vrf_name) {
count = vrfname_by_ifname(ifname, &vrf_name);
if (count != 1)
vrf_name = VRF_DEFAULT_NAME;
}
} else {
/*
* If the interface already exists, use its VRF regardless of
* what user specified. We can't have same interface name in
* different VRFs with VRF-lite backend.
*/
ifp = if_lookup_by_name_all_vrf(ifname);
if (ifp) {
vrf_name = ifp->vrf->name;
} else {
if (!vrf_name)
vrf_name = VRF_DEFAULT_NAME;
}
}
snprintf(xpath_list, sizeof(xpath_list),
"/frr-interface:lib/interface[name='%s'][vrf='%s']", ifname,
vrf_name);
nb_cli_enqueue_change(vty, ".", NB_OP_CREATE, NULL);
ret = nb_cli_apply_changes_clear_pending(vty, xpath_list);
if (ret == CMD_SUCCESS) {
VTY_PUSH_XPATH(INTERFACE_NODE, xpath_list);
/*
* For backward compatibility with old commands we still need
* to use the qobj infrastructure. This can be removed once
* all interface-level commands are converted to the new
* northbound model.
*/
if (vrf_is_backend_netns()) {
vrf = vrf_lookup_by_name(vrf_name);
if (vrf)
ifp = if_lookup_by_name_vrf(ifname, vrf);
else
ifp = NULL;
} else {
ifp = if_lookup_by_name_all_vrf(ifname);
}
if (ifp)
VTY_PUSH_CONTEXT(INTERFACE_NODE, ifp);
}
return ret;
}
DEFPY_YANG (no_interface,
no_interface_cmd,
"no interface IFNAME [vrf NAME$vrf_name]",
NO_STR
"Delete a pseudo interface's configuration\n"
"Interface's name\n"
VRF_CMD_HELP_STR)
{
if (!vrf_name)
vrf_name = VRF_DEFAULT_NAME;
nb_cli_enqueue_change(vty, ".", NB_OP_DESTROY, NULL);
return nb_cli_apply_changes(
vty, "/frr-interface:lib/interface[name='%s'][vrf='%s']",
ifname, vrf_name);
}
static void cli_show_interface(struct vty *vty, const struct lyd_node *dnode,
bool show_defaults)
{
const char *vrf;
vrf = yang_dnode_get_string(dnode, "./vrf");
vty_out(vty, "!\n");
vty_out(vty, "interface %s", yang_dnode_get_string(dnode, "./name"));
if (!strmatch(vrf, VRF_DEFAULT_NAME))
vty_out(vty, " vrf %s", vrf);
vty_out(vty, "\n");
}
static void cli_show_interface_end(struct vty *vty,
const struct lyd_node *dnode)
{
vty_out(vty, "exit\n");
}
/*
* XPath: /frr-interface:lib/interface/description
*/
DEFPY_YANG (interface_desc,
interface_desc_cmd,
"description LINE...",
"Interface specific description\n"
"Characters describing this interface\n")
{
char *desc;
int ret;
desc = argv_concat(argv, argc, 1);
nb_cli_enqueue_change(vty, "./description", NB_OP_MODIFY, desc);
ret = nb_cli_apply_changes(vty, NULL);
XFREE(MTYPE_TMP, desc);
return ret;
}
DEFPY_YANG (no_interface_desc,
no_interface_desc_cmd,
"no description",
NO_STR
"Interface specific description\n")
{
nb_cli_enqueue_change(vty, "./description", NB_OP_DESTROY, NULL);
return nb_cli_apply_changes(vty, NULL);
}
static void cli_show_interface_desc(struct vty *vty,
const struct lyd_node *dnode,
bool show_defaults)
{
vty_out(vty, " description %s\n", yang_dnode_get_string(dnode, NULL));
}
/* Interface autocomplete. */
static void if_autocomplete(vector comps, struct cmd_token *token)
{
struct interface *ifp;
struct vrf *vrf;
RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
FOR_ALL_INTERFACES (vrf, ifp) {
vector_set(comps, XSTRDUP(MTYPE_COMPLETION, ifp->name));
}
}
}
static const struct cmd_variable_handler if_var_handlers[] = {
{/* "interface NAME" */
.varname = "interface",
.completions = if_autocomplete},
{.tokenname = "IFNAME", .completions = if_autocomplete},
{.tokenname = "INTERFACE", .completions = if_autocomplete},
{.completions = NULL}};
static struct cmd_node interface_node = {
.name = "interface",
.node = INTERFACE_NODE,
.parent_node = CONFIG_NODE,
.prompt = "%s(config-if)# ",
};
void if_cmd_init(int (*config_write)(struct vty *))
{
cmd_variable_handler_register(if_var_handlers);
interface_node.config_write = config_write;
install_node(&interface_node);
install_element(CONFIG_NODE, &interface_cmd);
install_element(CONFIG_NODE, &no_interface_cmd);
install_default(INTERFACE_NODE);
install_element(INTERFACE_NODE, &interface_desc_cmd);
install_element(INTERFACE_NODE, &no_interface_desc_cmd);
}
void if_zapi_callbacks(int (*create)(struct interface *ifp),
int (*up)(struct interface *ifp),
int (*down)(struct interface *ifp),
int (*destroy)(struct interface *ifp))
{
ifp_master.create_hook = create;
ifp_master.up_hook = up;
ifp_master.down_hook = down;
ifp_master.destroy_hook = destroy;
}
/* ------- Northbound callbacks ------- */
/*
* XPath: /frr-interface:lib/interface
*/
static int lib_interface_create(struct nb_cb_create_args *args)
{
const char *ifname;
const char *vrfname;
struct interface *ifp;
ifname = yang_dnode_get_string(args->dnode, "./name");
vrfname = yang_dnode_get_string(args->dnode, "./vrf");
switch (args->event) {
case NB_EV_VALIDATE:
case NB_EV_PREPARE:
case NB_EV_ABORT:
break;
case NB_EV_APPLY:
ifp = if_get_by_name(ifname, VRF_UNKNOWN, vrfname);
ifp->configured = true;
nb_running_set_entry(args->dnode, ifp);
break;
}
return NB_OK;
}
static int lib_interface_destroy(struct nb_cb_destroy_args *args)
{
struct interface *ifp;
switch (args->event) {
case NB_EV_VALIDATE:
ifp = nb_running_get_entry(args->dnode, NULL, true);
if (CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) {
snprintf(args->errmsg, args->errmsg_len,
"only inactive interfaces can be deleted");
return NB_ERR_VALIDATION;
}
break;
case NB_EV_PREPARE:
case NB_EV_ABORT:
break;
case NB_EV_APPLY:
ifp = nb_running_unset_entry(args->dnode);
ifp->configured = false;
if_delete(&ifp);
break;
}
return NB_OK;
}
/*
* XPath: /frr-interface:lib/interface
*/
static const void *lib_interface_get_next(struct nb_cb_get_next_args *args)
{
struct vrf *vrf;
struct interface *pif = (struct interface *)args->list_entry;
if (args->list_entry == NULL) {
vrf = RB_MIN(vrf_name_head, &vrfs_by_name);
assert(vrf);
pif = RB_MIN(if_name_head, &vrf->ifaces_by_name);
} else {
vrf = pif->vrf;
pif = RB_NEXT(if_name_head, pif);
/* if no more interfaces, switch to next vrf */
while (pif == NULL) {
vrf = RB_NEXT(vrf_name_head, vrf);
if (!vrf)
return NULL;
pif = RB_MIN(if_name_head, &vrf->ifaces_by_name);
}
}
return pif;
}
static int lib_interface_get_keys(struct nb_cb_get_keys_args *args)
{
const struct interface *ifp = args->list_entry;
args->keys->num = 2;
strlcpy(args->keys->key[0], ifp->name, sizeof(args->keys->key[0]));
strlcpy(args->keys->key[1], ifp->vrf->name, sizeof(args->keys->key[1]));
return NB_OK;
}
static const void *
lib_interface_lookup_entry(struct nb_cb_lookup_entry_args *args)
{
const char *ifname = args->keys->key[0];
const char *vrfname = args->keys->key[1];
struct vrf *vrf = vrf_lookup_by_name(vrfname);
return vrf ? if_lookup_by_name(ifname, vrf->vrf_id) : NULL;
}
/*
* XPath: /frr-interface:lib/interface/description
*/
static int lib_interface_description_modify(struct nb_cb_modify_args *args)
{
struct interface *ifp;
const char *description;
if (args->event != NB_EV_APPLY)
return NB_OK;
ifp = nb_running_get_entry(args->dnode, NULL, true);
XFREE(MTYPE_TMP, ifp->desc);
description = yang_dnode_get_string(args->dnode, NULL);
ifp->desc = XSTRDUP(MTYPE_TMP, description);
return NB_OK;
}
static int lib_interface_description_destroy(struct nb_cb_destroy_args *args)
{
struct interface *ifp;
if (args->event != NB_EV_APPLY)
return NB_OK;
ifp = nb_running_get_entry(args->dnode, NULL, true);
XFREE(MTYPE_TMP, ifp->desc);
return NB_OK;
}
/*
* XPath: /frr-interface:lib/interface/state/if-index
*/
static struct yang_data *
lib_interface_state_if_index_get_elem(struct nb_cb_get_elem_args *args)
{
const struct interface *ifp = args->list_entry;
return yang_data_new_int32(args->xpath, ifp->ifindex);
}
/*
* XPath: /frr-interface:lib/interface/state/mtu
*/
static struct yang_data *
lib_interface_state_mtu_get_elem(struct nb_cb_get_elem_args *args)
{
const struct interface *ifp = args->list_entry;
return yang_data_new_uint16(args->xpath, ifp->mtu);
}
/*
* XPath: /frr-interface:lib/interface/state/mtu6
*/
static struct yang_data *
lib_interface_state_mtu6_get_elem(struct nb_cb_get_elem_args *args)
{
const struct interface *ifp = args->list_entry;
return yang_data_new_uint32(args->xpath, ifp->mtu6);
}
/*
* XPath: /frr-interface:lib/interface/state/speed
*/
static struct yang_data *
lib_interface_state_speed_get_elem(struct nb_cb_get_elem_args *args)
{
const struct interface *ifp = args->list_entry;
return yang_data_new_uint32(args->xpath, ifp->speed);
}
/*
* XPath: /frr-interface:lib/interface/state/metric
*/
static struct yang_data *
lib_interface_state_metric_get_elem(struct nb_cb_get_elem_args *args)
{
const struct interface *ifp = args->list_entry;
return yang_data_new_uint32(args->xpath, ifp->metric);
}
/*
* XPath: /frr-interface:lib/interface/state/flags
*/
static struct yang_data *
lib_interface_state_flags_get_elem(struct nb_cb_get_elem_args *args)
{
/* TODO: implement me. */
return NULL;
}
/*
* XPath: /frr-interface:lib/interface/state/type
*/
static struct yang_data *
lib_interface_state_type_get_elem(struct nb_cb_get_elem_args *args)
{
/* TODO: implement me. */
return NULL;
}
/*
* XPath: /frr-interface:lib/interface/state/phy-address
*/
static struct yang_data *
lib_interface_state_phy_address_get_elem(struct nb_cb_get_elem_args *args)
{
const struct interface *ifp = args->list_entry;
struct ethaddr macaddr;
memcpy(&macaddr.octet, ifp->hw_addr, ETH_ALEN);
return yang_data_new_mac(args->xpath, &macaddr);
}
/* clang-format off */
const struct frr_yang_module_info frr_interface_info = {
.name = "frr-interface",
.nodes = {
{
.xpath = "/frr-interface:lib/interface",
.cbs = {
.create = lib_interface_create,
.destroy = lib_interface_destroy,
.cli_show = cli_show_interface,
.cli_show_end = cli_show_interface_end,
.get_next = lib_interface_get_next,
.get_keys = lib_interface_get_keys,
.lookup_entry = lib_interface_lookup_entry,
},
},
{
.xpath = "/frr-interface:lib/interface/description",
.cbs = {
.modify = lib_interface_description_modify,
.destroy = lib_interface_description_destroy,
.cli_show = cli_show_interface_desc,
},
},
{
.xpath = "/frr-interface:lib/interface/state/if-index",
.cbs = {
.get_elem = lib_interface_state_if_index_get_elem,
}
},
{
.xpath = "/frr-interface:lib/interface/state/mtu",
.cbs = {
.get_elem = lib_interface_state_mtu_get_elem,
}
},
{
.xpath = "/frr-interface:lib/interface/state/mtu6",
.cbs = {
.get_elem = lib_interface_state_mtu6_get_elem,
}
},
{
.xpath = "/frr-interface:lib/interface/state/speed",
.cbs = {
.get_elem = lib_interface_state_speed_get_elem,
}
},
{
.xpath = "/frr-interface:lib/interface/state/metric",
.cbs = {
.get_elem = lib_interface_state_metric_get_elem,
}
},
{
.xpath = "/frr-interface:lib/interface/state/flags",
.cbs = {
.get_elem = lib_interface_state_flags_get_elem,
}
},
{
.xpath = "/frr-interface:lib/interface/state/type",
.cbs = {
.get_elem = lib_interface_state_type_get_elem,
}
},
{
.xpath = "/frr-interface:lib/interface/state/phy-address",
.cbs = {
.get_elem = lib_interface_state_phy_address_get_elem,
}
},
{
.xpath = NULL,
},
}
};
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