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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 GNU Zebra; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <zebra.h>
#include "linklist.h"
#include "vector.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 "str.h"
#include "log.h"
/* List of interfaces in only the default VRF */
int ptm_enable = 0;
/* One for each program. This structure is needed to store hooks. */
struct if_master
{
int (*if_new_hook) (struct interface *);
int (*if_delete_hook) (struct interface *);
} if_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 (char *p1, 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)
return -1;
if (!*p2)
return 1;
x1 = strtol(p1, &p1, 10);
x2 = strtol(p2, &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 (struct interface *ifp1, struct interface *ifp2)
{
return if_cmp_name_func (ifp1->name, ifp2->name);
}
/* Create new interface structure. */
struct interface *
if_create_vrf (const char *name, int namelen, vrf_id_t vrf_id)
{
struct interface *ifp;
struct list *intf_list = vrf_iflist_get (vrf_id);
ifp = XCALLOC (MTYPE_IF, sizeof (struct interface));
ifp->ifindex = IFINDEX_INTERNAL;
assert (name);
assert (namelen <= INTERFACE_NAMSIZ); /* Need space for '\0' at end. */
strncpy (ifp->name, name, namelen);
ifp->name[namelen] = '\0';
ifp->vrf_id = vrf_id;
if (if_lookup_by_name_vrf (ifp->name, vrf_id) == NULL)
listnode_add_sort (intf_list, ifp);
else
zlog_err("if_create(%s): corruption detected -- interface with this "
"name exists already in VRF %u!", ifp->name, vrf_id);
ifp->connected = list_new ();
ifp->connected->del = (void (*) (void *)) 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);
if (if_master.if_new_hook)
(*if_master.if_new_hook) (ifp);
return ifp;
}
struct interface *
if_create (const char *name, int namelen)
{
return if_create_vrf (name, namelen, VRF_DEFAULT);
}
/* Create new interface structure. */
void
if_update_vrf (struct interface *ifp, const char *name, int namelen, vrf_id_t vrf_id)
{
struct list *intf_list = vrf_iflist_get (vrf_id);
/* remove interface from old master vrf list */
if (vrf_iflist (ifp->vrf_id))
listnode_delete (vrf_iflist (ifp->vrf_id), ifp);
assert (name);
assert (namelen <= INTERFACE_NAMSIZ); /* Need space for '\0' at end. */
strncpy (ifp->name, name, namelen);
ifp->name[namelen] = '\0';
ifp->vrf_id = vrf_id;
if (if_lookup_by_name_vrf (ifp->name, vrf_id) == NULL)
listnode_add_sort (intf_list, ifp);
else
zlog_err("if_create(%s): corruption detected -- interface with this "
"name exists already in VRF %u!", ifp->name, vrf_id);
return;
}
/* Delete interface structure. */
void
if_delete_retain (struct interface *ifp)
{
if (if_master.if_delete_hook)
(*if_master.if_delete_hook) (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)
{
listnode_delete (vrf_iflist (ifp->vrf_id), ifp);
if_delete_retain(ifp);
list_free (ifp->connected);
list_free (ifp->nbr_connected);
XFREE (MTYPE_IF, ifp);
}
/* Add hook to interface master. */
void
if_add_hook (int type, int (*func)(struct interface *ifp))
{
switch (type) {
case IF_NEW_HOOK:
if_master.if_new_hook = func;
break;
case IF_DELETE_HOOK:
if_master.if_delete_hook = func;
break;
default:
break;
}
}
/* Interface existance check by index. */
struct interface *
if_lookup_by_index_vrf (unsigned int index, vrf_id_t vrf_id)
{
struct listnode *node;
struct interface *ifp;
for (ALL_LIST_ELEMENTS_RO (vrf_iflist (vrf_id), node, ifp))
{
if (ifp->ifindex == index)
return ifp;
}
return NULL;
}
struct interface *
if_lookup_by_index (unsigned int index)
{
return if_lookup_by_index_vrf (index, VRF_DEFAULT);
}
const char *
ifindex2ifname_vrf (unsigned int index, vrf_id_t vrf_id)
{
struct interface *ifp;
return ((ifp = if_lookup_by_index_vrf (index, vrf_id)) != NULL) ?
ifp->name : "unknown";
}
const char *
ifindex2ifname (unsigned int index)
{
return ifindex2ifname_vrf (index, VRF_DEFAULT);
}
unsigned int
ifname2ifindex_vrf (const char *name, vrf_id_t vrf_id)
{
struct interface *ifp;
return ((ifp = if_lookup_by_name_vrf (name, vrf_id)) != NULL) ? ifp->ifindex
: IFINDEX_INTERNAL;
}
unsigned int
ifname2ifindex (const char *name)
{
return ifname2ifindex_vrf (name, VRF_DEFAULT);
}
/* Interface existance check by interface name. */
struct interface *
if_lookup_by_name_vrf (const char *name, vrf_id_t vrf_id)
{
struct listnode *node;
struct interface *ifp;
if (name)
for (ALL_LIST_ELEMENTS_RO (vrf_iflist (vrf_id), node, ifp))
{
if (strcmp(name, ifp->name) == 0)
return ifp;
}
return NULL;
}
struct interface *
if_lookup_by_name_all_vrf (const char *name)
{
struct interface *ifp;
struct vrf *vrf = NULL;
vrf_iter_t iter;
for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter))
{
vrf = vrf_iter2vrf (iter);
ifp = if_lookup_by_name_vrf (name, vrf->vrf_id);
if (ifp)
return ifp;
}
return NULL;
}
struct interface *
if_lookup_by_name (const char *name)
{
return if_lookup_by_name_vrf (name, VRF_DEFAULT);
}
struct interface *
if_lookup_by_name_len_vrf (const char *name, size_t namelen, vrf_id_t vrf_id)
{
struct listnode *node;
struct interface *ifp;
if (namelen > INTERFACE_NAMSIZ)
return NULL;
for (ALL_LIST_ELEMENTS_RO (vrf_iflist (vrf_id), node, ifp))
{
if (!memcmp(name, ifp->name, namelen) && (ifp->name[namelen] == '\0'))
return ifp;
}
return NULL;
}
struct interface *
if_lookup_by_name_len(const char *name, size_t namelen)
{
return if_lookup_by_name_len_vrf (name, namelen, VRF_DEFAULT);
}
/* Lookup interface by IPv4 address. */
struct interface *
if_lookup_exact_address_vrf (void *src, int family, vrf_id_t vrf_id)
{
struct listnode *node;
struct listnode *cnode;
struct interface *ifp;
struct prefix *p;
struct connected *c;
for (ALL_LIST_ELEMENTS_RO (vrf_iflist (vrf_id), node, 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.prefix4, (struct in6_addr *)src))
return ifp;
}
}
}
}
return NULL;
}
struct interface *
if_lookup_exact_address (void *src, int family)
{
return if_lookup_exact_address_vrf (src, family, VRF_DEFAULT);
}
/* Lookup interface by IPv4 address. */
struct interface *
if_lookup_address_vrf (void *matchaddr, int family, vrf_id_t vrf_id)
{
struct listnode *node;
struct prefix addr;
int bestlen = 0;
struct listnode *cnode;
struct interface *ifp;
struct connected *c;
struct interface *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_LIST_ELEMENTS_RO (vrf_iflist (vrf_id), node, 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 = ifp;
}
}
}
return match;
}
struct interface *
if_lookup_address (void *matchaddr, int family)
{
return if_lookup_address_vrf (matchaddr, family, VRF_DEFAULT);
}
/* Lookup interface by prefix */
struct interface *
if_lookup_prefix_vrf (struct prefix *prefix, vrf_id_t vrf_id)
{
struct listnode *node;
struct listnode *cnode;
struct interface *ifp;
struct connected *c;
for (ALL_LIST_ELEMENTS_RO (vrf_iflist (vrf_id), node, ifp))
{
for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, c))
{
if (prefix_cmp(c->address, prefix) == 0)
{
return ifp;
}
}
}
return NULL;
}
struct interface *
if_lookup_prefix (struct prefix *prefix)
{
return if_lookup_prefix_vrf (prefix, VRF_DEFAULT);
}
/* Get interface by name if given name interface doesn't exist create
one. */
struct interface *
if_get_by_name_vrf (const char *name, vrf_id_t vrf_id)
{
struct interface *ifp;
return ((ifp = if_lookup_by_name_vrf (name, vrf_id)) != NULL) ? ifp :
if_create_vrf (name, strlen(name), vrf_id);
}
struct interface *
if_get_by_name (const char *name)
{
return if_get_by_name_vrf (name, VRF_DEFAULT);
}
struct interface *
if_get_by_name_len_vrf (const char *name, size_t namelen, vrf_id_t vrf_id, int vty)
{
struct interface *ifp;
struct listnode *node;
struct vrf *vrf = NULL;
vrf_iter_t iter;
ifp = if_lookup_by_name_len_vrf (name, namelen, vrf_id);
if (ifp)
return ifp;
/* Didn't find the interface on that vrf. Defined on a different one? */
for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter))
{
vrf = vrf_iter2vrf(iter);
for (ALL_LIST_ELEMENTS_RO (vrf_iflist (vrf->vrf_id), node, ifp))
{
if (!memcmp(name, ifp->name, namelen) && (ifp->name[namelen] == '\0'))
{
/* Found a match. If the interface command was entered in vty without a
* VRF (passed as VRF_DEFAULT), accept the ifp we found. If a vrf was
* entered and there is a mismatch, reject it if from vty. If it came
* from the kernel by way of zclient, believe it and update
* the ifp accordingly.
*/
if (vty)
{
if (vrf_id == VRF_DEFAULT)
return ifp;
return NULL;
}
else
{
if_update_vrf (ifp, name, namelen, vrf_id);
return ifp;
}
}
}
}
return (if_create_vrf (name, namelen, vrf_id));
}
struct interface *
if_get_by_name_len (const char *name, size_t namelen)
{
return if_get_by_name_len_vrf (name, namelen, VRF_DEFAULT, 0);
}
/* Does interface up ? */
int
if_is_up (struct interface *ifp)
{
return ifp->flags & IFF_UP;
}
/* Is interface running? */
int
if_is_running (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 (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 (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 (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));
}
/* Does this interface support broadcast ? */
int
if_is_broadcast (struct interface *ifp)
{
return ifp->flags & IFF_BROADCAST;
}
/* Does this interface support broadcast ? */
int
if_is_pointopoint (struct interface *ifp)
{
return ifp->flags & IFF_POINTOPOINT;
}
/* Does this interface support multicast ? */
int
if_is_multicast (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, ",", BUFSIZ); \
else \
separator = 1; \
strlcat (logbuf, STR, BUFSIZ); \
}
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, ">", BUFSIZ);
return logbuf;
#undef IFF_OUT_LOG
}
/* For debugging */
static void
if_dump (const struct interface *ifp)
{
zlog_info ("Interface %s vrf %u index %d metric %d mtu %d "
#ifdef HAVE_IPV6
"mtu6 %d "
#endif /* HAVE_IPV6 */
"%s",
ifp->name, ifp->vrf_id, ifp->ifindex, ifp->metric, ifp->mtu,
#ifdef HAVE_IPV6
ifp->mtu6,
#endif /* HAVE_IPV6 */
if_flag_dump (ifp->flags));
}
/* Interface printing for all interface. */
void
if_dump_all (void)
{
struct list *intf_list;
struct listnode *node;
void *p;
vrf_iter_t iter;
for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter))
if ((intf_list = vrf_iter2iflist (iter)) != NULL)
for (ALL_LIST_ELEMENTS_RO (intf_list, node, p))
if_dump (p);
}
DEFUN (interface_desc,
interface_desc_cmd,
"description .LINE",
"Interface specific description\n"
"Characters describing this interface\n")
{
struct interface *ifp;
if (argc == 0)
return CMD_SUCCESS;
ifp = vty->index;
if (ifp->desc)
XFREE (MTYPE_TMP, ifp->desc);
ifp->desc = argv_concat(argv, argc, 0);
return CMD_SUCCESS;
}
DEFUN (no_interface_desc,
no_interface_desc_cmd,
"no description",
NO_STR
"Interface specific description\n")
{
struct interface *ifp;
ifp = vty->index;
if (ifp->desc)
XFREE (MTYPE_TMP, ifp->desc);
ifp->desc = NULL;
return CMD_SUCCESS;
}
#ifdef SUNOS_5
/* Need to handle upgrade from SUNWzebra to Quagga. SUNWzebra created
* a seperate struct interface for each logical interface, so config
* file may be full of 'interface fooX:Y'. Solaris however does not
* expose logical interfaces via PF_ROUTE, so trying to track logical
* interfaces can be fruitless, for that reason Quagga only tracks
* the primary IP interface.
*
* We try accomodate SUNWzebra by:
* - looking up the interface name, to see whether it exists, if so
* its useable
* - for protocol daemons, this could only because zebra told us of
* the interface
* - for zebra, only because it learnt from kernel
* - if not:
* - search the name to see if it contains a sub-ipif / logical interface
* seperator, the ':' char. If it does:
* - text up to that char must be the primary name - get that name.
* if not:
* - no idea, just get the name in its entirety.
*/
static struct interface *
if_sunwzebra_get (const char *name, size_t nlen, vrf_id_t vrf_id)
{
struct interface *ifp;
size_t seppos = 0;
if ( (ifp = if_lookup_by_name_len_vrf (name, nlen, vrf_id)) != NULL)
return ifp;
/* hunt the primary interface name... */
while (seppos < nlen && name[seppos] != ':')
seppos++;
/* Wont catch seperator as last char, e.g. 'foo0:' but thats invalid */
if (seppos < nlen)
return if_get_by_name_len_vrf (name, seppos, vrf_id, 1);
else
return if_get_by_name_len_vrf (name, nlen, vrf_id, 1);
}
#endif /* SUNOS_5 */
DEFUN (interface,
interface_cmd,
"interface IFNAME",
"Select an interface to configure\n"
"Interface's name\n")
{
struct interface *ifp;
size_t sl;
vrf_id_t vrf_id = VRF_DEFAULT;
if ((sl = strlen(argv[0])) > INTERFACE_NAMSIZ)
{
vty_out (vty, "%% Interface name %s is invalid: length exceeds "
"%d characters%s",
argv[0], INTERFACE_NAMSIZ, VTY_NEWLINE);
return CMD_WARNING;
}
/*Pending: need proper vrf name based lookup/(possible creation of VRF)
Imagine forward reference of a vrf by name in this interface config */
if (argc > 1)
VRF_GET_ID (vrf_id, argv[1]);
#ifdef SUNOS_5
ifp = if_sunwzebra_get (argv[0], sl, vrf_id);
#else
ifp = if_get_by_name_len_vrf (argv[0], sl, vrf_id, 1);
#endif /* SUNOS_5 */
if (!ifp)
{
vty_out (vty, "%% interface %s not in %s%s", argv[0], argv[1], VTY_NEWLINE);
return CMD_WARNING;
}
vty->index = ifp;
vty->node = INTERFACE_NODE;
return CMD_SUCCESS;
}
ALIAS (interface,
interface_vrf_cmd,
"interface IFNAME " VRF_CMD_STR,
"Select an interface to configure\n"
"Interface's name\n"
VRF_CMD_HELP_STR)
DEFUN_NOSH (no_interface,
no_interface_cmd,
"no interface IFNAME",
NO_STR
"Delete a pseudo interface's configuration\n"
"Interface's name\n")
{
// deleting interface
struct interface *ifp;
vrf_id_t vrf_id = VRF_DEFAULT;
if (argc > 1)
VRF_GET_ID (vrf_id, argv[1]);
ifp = if_lookup_by_name_vrf (argv[0], vrf_id);
if (ifp == NULL)
{
vty_out (vty, "%% Interface %s does not exist%s", argv[0], VTY_NEWLINE);
return CMD_WARNING;
}
if (CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
{
vty_out (vty, "%% Only inactive interfaces can be deleted%s",
VTY_NEWLINE);
return CMD_WARNING;
}
if_delete(ifp);
return CMD_SUCCESS;
}
ALIAS (no_interface,
no_interface_vrf_cmd,
"no interface IFNAME " VRF_CMD_STR,
NO_STR
"Delete a pseudo interface's configuration\n"
"Interface's name\n"
VRF_CMD_HELP_STR)
DEFUN (vrf,
vrf_cmd,
"vrf NAME",
"Select a VRF to configure\n"
"VRF's name\n")
{
struct vrf *vrfp;
size_t sl;
if ((sl = strlen(argv[0])) > VRF_NAMSIZ)
{
vty_out (vty, "%% VRF name %s is invalid: length exceeds "
"%d characters%s",
argv[0], VRF_NAMSIZ, VTY_NEWLINE);
return CMD_WARNING;
}
vrfp = vrf_get_by_name (argv[0]);
vty->index = vrfp;
vty->node = VRF_NODE;
return CMD_SUCCESS;
}
DEFUN_NOSH (no_vrf,
no_vrf_cmd,
"no vrf NAME",
NO_STR
"Delete a pseudo VRF's configuration\n"
"VRF's name\n")
{
struct vrf *vrfp;
vrfp = vrf_list_lookup_by_name (argv[0]);
if (vrfp == NULL)
{
vty_out (vty, "%% VRF %s does not exist%s", argv[0], VTY_NEWLINE);
return CMD_WARNING;
}
if (CHECK_FLAG (vrfp->status, VRF_ACTIVE))
{
vty_out (vty, "%% Only inactive VRFs can be deleted%s",
VTY_NEWLINE);
return CMD_WARNING;
}
vrf_delete(vrfp);
return CMD_SUCCESS;
}
/* For debug purpose. */
DEFUN (show_address,
show_address_cmd,
"show address",
SHOW_STR
"address\n")
{
struct listnode *node;
struct listnode *node2;
struct interface *ifp;
struct connected *ifc;
struct prefix *p;
vrf_id_t vrf_id = VRF_DEFAULT;
if (argc > 0)
VRF_GET_ID (vrf_id, argv[0]);
for (ALL_LIST_ELEMENTS_RO (vrf_iflist (vrf_id), node, ifp))
{
for (ALL_LIST_ELEMENTS_RO (ifp->connected, node2, ifc))
{
p = ifc->address;
if (p->family == AF_INET)
vty_out (vty, "%s/%d%s", inet_ntoa (p->u.prefix4), p->prefixlen,
VTY_NEWLINE);
}
}
return CMD_SUCCESS;
}
ALIAS (show_address,
show_address_vrf_cmd,
"show address " VRF_CMD_STR,
SHOW_STR
"address\n"
VRF_CMD_HELP_STR)
DEFUN (show_address_vrf_all,
show_address_vrf_all_cmd,
"show address " VRF_ALL_CMD_STR,
SHOW_STR
"address\n"
VRF_ALL_CMD_HELP_STR)
{
struct list *intf_list;
struct listnode *node;
struct listnode *node2;
struct interface *ifp;
struct connected *ifc;
struct prefix *p;
vrf_iter_t iter;
for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter))
{
intf_list = vrf_iter2iflist (iter);
if (!intf_list || !listcount (intf_list))
continue;
vty_out (vty, "%sVRF %u%s%s", VTY_NEWLINE, vrf_iter2id (iter),
VTY_NEWLINE, VTY_NEWLINE);
for (ALL_LIST_ELEMENTS_RO (intf_list, node, ifp))
{
for (ALL_LIST_ELEMENTS_RO (ifp->connected, node2, ifc))
{
p = ifc->address;
if (p->family == AF_INET)
vty_out (vty, "%s/%d%s", inet_ntoa (p->u.prefix4), p->prefixlen,
VTY_NEWLINE);
}
}
}
return CMD_SUCCESS;
}
/* 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)
{
if (connected->address)
prefix_free (connected->address);
if (connected->destination)
prefix_free (connected->destination);
if (connected->label)
XFREE (MTYPE_CONNECTED_LABEL, connected->label);
XFREE (MTYPE_CONNECTED, connected);
}
/* 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, BUFSIZ, "%s interface %s vrf %u %s %s/%d ",
str, ifp->name, ifp->vrf_id, prefix_family_str (p),
inet_ntop (p->family, &p->u.prefix, buf, BUFSIZ),
p->prefixlen);
p = connected->destination;
if (p)
{
strncat (logbuf, inet_ntop (p->family, &p->u.prefix, buf, BUFSIZ),
BUFSIZ - strlen(logbuf));
}
zlog (NULL, LOG_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];
char buf[BUFSIZ];
ifp = connected->ifp;
p = connected->address;
snprintf (logbuf, BUFSIZ, "%s interface %s %s %s/%d ",
str, ifp->name, prefix_family_str (p),
inet_ntop (p->family, &p->u.prefix, buf, BUFSIZ),
p->prefixlen);
zlog (NULL, LOG_INFO, "%s", logbuf);
}
/* If two connected address has same prefix return 1. */
static int
connected_same_prefix (struct prefix *p1, struct prefix *p2)
{
if (p1->family == p2->family)
{
if (p1->family == AF_INET &&
IPV4_ADDR_SAME (&p1->u.prefix4, &p2->u.prefix4))
return 1;
#ifdef HAVE_IPV6
if (p1->family == AF_INET6 &&
IPV6_ADDR_SAME (&p1->u.prefix6, &p2->u.prefix6))
return 1;
#endif /* HAVE_IPV6 */
}
return 0;
}
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 IPv4 address on our side that will be used when packets
are sent to dst. */
struct connected *
connected_lookup_address (struct interface *ifp, struct in_addr dst)
{
struct prefix addr;
struct listnode *cnode;
struct connected *c;
struct connected *match;
addr.family = AF_INET;
addr.u.prefix4 = dst;
addr.prefixlen = IPV4_MAX_BITLEN;
match = NULL;
for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, c))
{
if (c->address && (c->address->family == AF_INET) &&
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;
}
#ifndef HAVE_IF_NAMETOINDEX
unsigned int
if_nametoindex (const char *name)
{
struct interface *ifp;
return ((ifp = if_lookup_by_name_len(name, strnlen(name, IFNAMSIZ))) != NULL)
? ifp->ifindex : 0;
}
#endif
#ifndef HAVE_IF_INDEXTONAME
char *
if_indextoname (unsigned int ifindex, char *name)
{
struct interface *ifp;
if (!(ifp = if_lookup_by_index(ifindex)))
return NULL;
strncpy (name, ifp->name, IFNAMSIZ);
return ifp->name;
}
#endif
#if 0 /* this route_table of struct connected's is unused
* however, it would be good to use a route_table rather than
* a list..
*/
/* Interface looking up by interface's address. */
/* Interface's IPv4 address reverse lookup table. */
struct route_table *ifaddr_ipv4_table;
/* struct route_table *ifaddr_ipv6_table; */
static void
ifaddr_ipv4_add (struct in_addr *ifaddr, struct interface *ifp)
{
struct route_node *rn;
struct prefix_ipv4 p;
p.family = AF_INET;
p.prefixlen = IPV4_MAX_PREFIXLEN;
p.prefix = *ifaddr;
rn = route_node_get (ifaddr_ipv4_table, (struct prefix *) &p);
if (rn)
{
route_unlock_node (rn);
zlog_info ("ifaddr_ipv4_add(): address %s is already added",
inet_ntoa (*ifaddr));
return;
}
rn->info = ifp;
}
static void
ifaddr_ipv4_delete (struct in_addr *ifaddr, struct interface *ifp)
{
struct route_node *rn;
struct prefix_ipv4 p;
p.family = AF_INET;
p.prefixlen = IPV4_MAX_PREFIXLEN;
p.prefix = *ifaddr;
rn = route_node_lookup (ifaddr_ipv4_table, (struct prefix *) &p);
if (! rn)
{
zlog_info ("ifaddr_ipv4_delete(): can't find address %s",
inet_ntoa (*ifaddr));
return;
}
rn->info = NULL;
route_unlock_node (rn);
route_unlock_node (rn);
}
/* Lookup interface by interface's IP address or interface index. */
static struct interface *
ifaddr_ipv4_lookup (struct in_addr *addr, unsigned int ifindex)
{
struct prefix_ipv4 p;
struct route_node *rn;
struct interface *ifp;
if (addr)
{
p.family = AF_INET;
p.prefixlen = IPV4_MAX_PREFIXLEN;
p.prefix = *addr;
rn = route_node_lookup (ifaddr_ipv4_table, (struct prefix *) &p);
if (! rn)
return NULL;
ifp = rn->info;
route_unlock_node (rn);
return ifp;
}
else
return if_lookup_by_index(ifindex);
}
#endif /* ifaddr_ipv4_table */
/* Initialize interface list. */
void
if_init (struct list **intf_list)
{
*intf_list = list_new ();
#if 0
ifaddr_ipv4_table = route_table_init ();
#endif /* ifaddr_ipv4_table */
(*intf_list)->cmp = (int (*)(void *, void *))if_cmp_func;
}
void
if_terminate (struct list **intf_list)
{
for (;;)
{
struct interface *ifp;
ifp = listnode_head (*intf_list);
if (ifp == NULL)
break;
if_delete (ifp);
}
list_delete (*intf_list);
*intf_list = NULL;
}
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