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Merge pull request #16533 from acooks-at-bda/less-controversial-ospf6d-refactor-before-adding-tlvs

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OSPF6: Refactor to prepare for E-LSA handling
This commit is contained in:
Russ White 2024-09-24 09:50:19 -04:00 committed by GitHub
commit 3c89cb638f
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GPG Key ID: B5690EEEBB952194
25 changed files with 395 additions and 418 deletions
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25
ospf6d/ospf6_abr.c
View File

@ -553,8 +553,7 @@ int ospf6_abr_originate_summary_to_area(struct ospf6_route *route,
lsa_header = (struct ospf6_lsa_header *)buffer;
if (route->type == OSPF6_DEST_TYPE_ROUTER) {
router_lsa = (struct ospf6_inter_router_lsa *)
ospf6_lsa_header_end(lsa_header);
router_lsa = lsa_after_header(lsa_header);
p = (caddr_t)router_lsa + sizeof(struct ospf6_inter_router_lsa);
/* Fill Inter-Area-Router-LSA */
@ -565,8 +564,7 @@ int ospf6_abr_originate_summary_to_area(struct ospf6_route *route,
router_lsa->router_id = ADV_ROUTER_IN_PREFIX(&route->prefix);
type = htons(OSPF6_LSTYPE_INTER_ROUTER);
} else {
prefix_lsa = (struct ospf6_inter_prefix_lsa *)
ospf6_lsa_header_end(lsa_header);
prefix_lsa = lsa_after_header(lsa_header);
p = (caddr_t)prefix_lsa + sizeof(struct ospf6_inter_prefix_lsa);
/* Fill Inter-Area-Prefix-LSA */
@ -1016,8 +1014,7 @@ void ospf6_abr_examin_summary(struct ospf6_lsa *lsa, struct ospf6_area *oa)
oa->name);
}
prefix_lsa = (struct ospf6_inter_prefix_lsa *)
ospf6_lsa_header_end(lsa->header);
prefix_lsa = lsa_after_header(lsa->header);
prefix.family = AF_INET6;
prefix.prefixlen = prefix_lsa->prefix.prefix_length;
ospf6_prefix_in6_addr(&prefix.u.prefix6, prefix_lsa,
@ -1036,8 +1033,7 @@ void ospf6_abr_examin_summary(struct ospf6_lsa *lsa, struct ospf6_area *oa)
oa->name);
}
router_lsa = (struct ospf6_inter_router_lsa *)
ospf6_lsa_header_end(lsa->header);
router_lsa = lsa_after_header(lsa->header);
ospf6_linkstate_prefix(router_lsa->router_id, htonl(0), &prefix);
if (is_debug)
inet_ntop(AF_INET, &router_lsa->router_id, buf,
@ -1429,8 +1425,7 @@ static char *ospf6_inter_area_prefix_lsa_get_prefix_str(struct ospf6_lsa *lsa,
char tbuf[16];
if (lsa != NULL) {
prefix_lsa = (struct ospf6_inter_prefix_lsa *)
ospf6_lsa_header_end(lsa->header);
prefix_lsa = lsa_after_header(lsa->header);
ospf6_prefix_in6_addr(&in6, prefix_lsa, &prefix_lsa->prefix);
if (buf) {
@ -1452,8 +1447,7 @@ static int ospf6_inter_area_prefix_lsa_show(struct vty *vty,
struct ospf6_inter_prefix_lsa *prefix_lsa;
char buf[INET6_ADDRSTRLEN];
prefix_lsa = (struct ospf6_inter_prefix_lsa *)ospf6_lsa_header_end(
lsa->header);
prefix_lsa = lsa_after_header(lsa->header);
if (use_json) {
json_object_int_add(
@ -1489,9 +1483,7 @@ static char *ospf6_inter_area_router_lsa_get_prefix_str(struct ospf6_lsa *lsa,
struct ospf6_inter_router_lsa *router_lsa;
if (lsa != NULL) {
router_lsa = (struct ospf6_inter_router_lsa *)
ospf6_lsa_header_end(lsa->header);
router_lsa = lsa_after_header(lsa->header);
if (buf)
inet_ntop(AF_INET, &router_lsa->router_id, buf, buflen);
@ -1508,8 +1500,7 @@ static int ospf6_inter_area_router_lsa_show(struct vty *vty,
struct ospf6_inter_router_lsa *router_lsa;
char buf[64];
router_lsa = (struct ospf6_inter_router_lsa *)ospf6_lsa_header_end(
lsa->header);
router_lsa = lsa_after_header(lsa->header);
ospf6_options_printbuf(router_lsa->options, buf, sizeof(buf));
if (use_json) {

16
ospf6d/ospf6_abr.h
View File

@ -17,22 +17,6 @@ extern unsigned char conf_debug_ospf6_abr;
#define OSPF6_DEBUG_ABR_OFF() (conf_debug_ospf6_abr = 0)
#define IS_OSPF6_DEBUG_ABR (conf_debug_ospf6_abr)
/* Inter-Area-Prefix-LSA */
#define OSPF6_INTER_PREFIX_LSA_MIN_SIZE 4U /* w/o IPv6 prefix */
struct ospf6_inter_prefix_lsa {
uint32_t metric;
struct ospf6_prefix prefix;
};
/* Inter-Area-Router-LSA */
#define OSPF6_INTER_ROUTER_LSA_FIX_SIZE 12U
struct ospf6_inter_router_lsa {
uint8_t mbz;
uint8_t options[3];
uint32_t metric;
uint32_t router_id;
};
#define OSPF6_ABR_SUMMARY_METRIC(E) \
(ntohl((E)->metric & htonl(OSPF6_EXT_PATH_METRIC_MAX)))
#define OSPF6_ABR_SUMMARY_METRIC_SET(E, C) \

27
ospf6d/ospf6_asbr.c
View File

@ -39,6 +39,7 @@
#include "ospf6d.h"
#include "ospf6_spf.h"
#include "ospf6_nssa.h"
#include "ospf6_tlv.h"
#include "ospf6_gr.h"
#include "lib/json.h"
@ -102,8 +103,7 @@ struct ospf6_lsa *ospf6_as_external_lsa_originate(struct ospf6_route *route,
/* prepare buffer */
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
as_external_lsa = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa_header);
as_external_lsa = lsa_after_header(lsa_header);
p = (caddr_t)((caddr_t)as_external_lsa
+ sizeof(struct ospf6_as_external_lsa));
@ -216,8 +216,7 @@ static route_tag_t ospf6_as_external_lsa_get_tag(struct ospf6_lsa *lsa)
if (!lsa)
return 0;
external = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa->header);
external = lsa_after_header(lsa->header);
if (!CHECK_FLAG(external->bits_metric, OSPF6_ASBR_BIT_T))
return 0;
@ -520,8 +519,7 @@ void ospf6_asbr_lsa_add(struct ospf6_lsa *lsa)
type = ntohs(lsa->header->type);
oa = lsa->lsdb->data;
external = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa->header);
external = lsa_after_header(lsa->header);
if (IS_OSPF6_DEBUG_EXAMIN(AS_EXTERNAL))
zlog_debug("Calculate AS-External route for %s", lsa->name);
@ -725,8 +723,7 @@ void ospf6_asbr_lsa_remove(struct ospf6_lsa *lsa,
int type;
bool debug = false;
external = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa->header);
external = lsa_after_header(lsa->header);
if (IS_OSPF6_DEBUG_EXAMIN(AS_EXTERNAL) || (IS_OSPF6_DEBUG_NSSA))
debug = true;
@ -2424,8 +2421,7 @@ static char *ospf6_as_external_lsa_get_prefix_str(struct ospf6_lsa *lsa,
char tbuf[16];
if (lsa) {
external = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa->header);
external = lsa_after_header(lsa->header);
if (pos == 0) {
ospf6_prefix_in6_addr(&in6, external,
@ -2459,8 +2455,7 @@ static int ospf6_as_external_lsa_show(struct vty *vty, struct ospf6_lsa *lsa,
char buf[64];
assert(lsa->header);
external = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa->header);
external = lsa_after_header(lsa->header);
/* bits */
snprintf(buf, sizeof(buf), "%c%c%c",
@ -3027,8 +3022,7 @@ ospf6_originate_summary_lsa(struct ospf6 *ospf6,
return;
}
external = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
aggr_lsa->header);
external = lsa_after_header(aggr_lsa->header);
metric = (unsigned long)OSPF6_ASBR_METRIC(external);
tag = ospf6_as_external_lsa_get_tag(aggr_lsa);
mtype = CHECK_FLAG(external->bits_metric,
@ -3176,7 +3170,7 @@ ospf6_handle_external_aggr_modify(struct ospf6 *ospf6,
return OSPF6_FAILURE;
}
asel = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(lsa->header);
asel = lsa_after_header(lsa->header);
metric = (unsigned long)OSPF6_ASBR_METRIC(asel);
tag = ospf6_as_external_lsa_get_tag(lsa);
mtype = CHECK_FLAG(asel->bits_metric,
@ -3365,8 +3359,7 @@ static void ospf6_handle_aggregated_exnl_rt(struct ospf6 *ospf6,
lsa = ospf6_lsdb_lookup(htons(OSPF6_LSTYPE_AS_EXTERNAL),
htonl(info->id), ospf6->router_id, ospf6->lsdb);
if (lsa) {
ext_lsa = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa->header);
ext_lsa = lsa_after_header(lsa->header);
if (rt->prefix.prefixlen != ext_lsa->prefix.prefix_length)
return;

11
ospf6d/ospf6_asbr.h
View File

@ -79,17 +79,6 @@ struct ospf6_external_aggr_rt {
struct hash *match_extnl_hash;
};
/* AS-External-LSA */
#define OSPF6_AS_EXTERNAL_LSA_MIN_SIZE 4U /* w/o IPv6 prefix */
struct ospf6_as_external_lsa {
uint32_t bits_metric;
struct ospf6_prefix prefix;
/* followed by none or one forwarding address */
/* followed by none or one external route tag */
/* followed by none or one referenced LS-ID */
};
#define OSPF6_ASBR_BIT_T ntohl (0x01000000)
#define OSPF6_ASBR_BIT_F ntohl (0x02000000)
#define OSPF6_ASBR_BIT_E ntohl (0x04000000)

1
ospf6d/ospf6_flood.c
View File

@ -26,6 +26,7 @@
#include "ospf6_flood.h"
#include "ospf6_nssa.h"
#include "ospf6_tlv.h"
#include "ospf6_gr.h"
unsigned char conf_debug_ospf6_flooding;

13
ospf6d/ospf6_gr.c
View File

@ -16,6 +16,7 @@
#include "printfrr.h"
#include "lib_errors.h"
#include "ospf6_proto.h"
#include "ospf6d/ospf6_lsa.h"
#include "ospf6d/ospf6_lsdb.h"
#include "ospf6d/ospf6_route.h"
@ -30,6 +31,7 @@
#include "ospf6d/ospf6_flood.h"
#include "ospf6d/ospf6_intra.h"
#include "ospf6d/ospf6_spf.h"
#include "ospf6d/ospf6_tlv.h"
#include "ospf6d/ospf6_gr.h"
#include "ospf6d/ospf6_gr_clippy.c"
@ -54,16 +56,17 @@ static int ospf6_gr_lsa_originate(struct ospf6_interface *oi,
/* prepare buffer */
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
grace_lsa = (struct ospf6_grace_lsa *)ospf6_lsa_header_end(lsa_header);
grace_lsa = lsa_after_header(lsa_header);
/* Put grace period. */
grace_lsa->tlv_period.header.type = htons(GRACE_PERIOD_TYPE);
grace_lsa->tlv_period.header.length = htons(GRACE_PERIOD_LENGTH);
grace_lsa->tlv_period.header.type = htons(TLV_GRACE_PERIOD_TYPE);
grace_lsa->tlv_period.header.length = htons(TLV_GRACE_PERIOD_LENGTH);
grace_lsa->tlv_period.interval = htonl(gr_info->grace_period);
/* Put restart reason. */
grace_lsa->tlv_reason.header.type = htons(RESTART_REASON_TYPE);
grace_lsa->tlv_reason.header.length = htons(RESTART_REASON_LENGTH);
grace_lsa->tlv_reason.header.type = htons(TLV_GRACE_RESTART_REASON_TYPE);
grace_lsa->tlv_reason.header.length =
htons(TLV_GRACE_RESTART_REASON_LENGTH);
grace_lsa->tlv_reason.reason = reason;
/* Fill LSA Header */

53
ospf6d/ospf6_gr.h
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* OSPF6 Graceful Retsart helper functions.
* OSPF6 Graceful Restart helper functions.
* Ref RFC 5187
*
* Copyright (C) 2021-22 Vmware, Inc.
* Rajesh Kumar Girada
@ -60,58 +61,16 @@ enum ospf6_gr_helper_rejected_reason {
OSPF6_HELPER_RESTARTING,
};
#ifdef roundup
#define ROUNDUP(val, gran) roundup(val, gran)
#else /* roundup */
#define ROUNDUP(val, gran) (((val)-1 | (gran)-1) + 1)
#endif /* roundup */
/*
* Generic TLV (type, length, value) macros
*/
struct tlv_header {
uint16_t type; /* Type of Value */
uint16_t length; /* Length of Value portion only, in bytes */
};
#define TLV_HDR_SIZE (sizeof(struct tlv_header))
#define TLV_BODY_SIZE(tlvh) (ROUNDUP(ntohs((tlvh)->length), sizeof(uint32_t)))
#define TLV_SIZE(tlvh) (uint32_t)(TLV_HDR_SIZE + TLV_BODY_SIZE(tlvh))
#define TLV_HDR_TOP(lsah) \
(struct tlv_header *)((char *)(lsah) + OSPF6_LSA_HEADER_SIZE)
#define TLV_HDR_NEXT(tlvh) \
(struct tlv_header *)((char *)(tlvh) + TLV_SIZE(tlvh))
/* Ref RFC5187 appendix-A */
/* Grace period TLV */
#define GRACE_PERIOD_TYPE 1
#define GRACE_PERIOD_LENGTH 4
struct grace_tlv_graceperiod {
struct tlv_header header;
uint32_t interval;
};
#define GRACE_PERIOD_TLV_SIZE sizeof(struct grace_tlv_graceperiod)
/* Restart reason TLV */
#define RESTART_REASON_TYPE 2
#define RESTART_REASON_LENGTH 1
struct grace_tlv_restart_reason {
struct tlv_header header;
uint8_t reason;
uint8_t reserved[3];
};
#define GRACE_RESTART_REASON_TLV_SIZE sizeof(struct grace_tlv_restart_reason)
#define GRACE_PERIOD_TLV_SIZE sizeof(struct tlv_grace_period)
#define GRACE_RESTART_REASON_TLV_SIZE sizeof(struct tlv_grace_restart_reason)
#define OSPF6_GRACE_LSA_MIN_SIZE \
GRACE_PERIOD_TLV_SIZE + GRACE_RESTART_REASON_TLV_SIZE
struct ospf6_grace_lsa {
struct grace_tlv_graceperiod tlv_period;
struct grace_tlv_restart_reason tlv_reason;
struct tlv_grace_period tlv_period;
struct tlv_grace_restart_reason tlv_reason;
};
struct advRtr {

31
ospf6d/ospf6_gr_helper.c
View File

@ -32,6 +32,7 @@
#include "ospf6_neighbor.h"
#include "ospf6_intra.h"
#include "ospf6d.h"
#include "ospf6_tlv.h"
#include "ospf6_gr.h"
#include "lib/json.h"
#include "ospf6d/ospf6_gr_helper_clippy.c"
@ -129,8 +130,8 @@ static int ospf6_extract_grace_lsa_fields(struct ospf6_lsa *lsa,
{
struct ospf6_lsa_header *lsah = NULL;
struct tlv_header *tlvh = NULL;
struct grace_tlv_graceperiod *gracePeriod;
struct grace_tlv_restart_reason *grReason;
struct tlv_grace_period *gracePeriod;
struct tlv_grace_restart_reason *grReason;
uint16_t length = 0;
int sum = 0;
@ -144,9 +145,8 @@ static int ospf6_extract_grace_lsa_fields(struct ospf6_lsa *lsa,
length = ntohs(lsah->length) - OSPF6_LSA_HEADER_SIZE;
for (tlvh = TLV_HDR_TOP(lsah); sum < length && tlvh;
for (tlvh = lsdesc_start(lsah); sum < length && tlvh;
tlvh = TLV_HDR_NEXT(tlvh)) {
/* Check TLV len against overall LSA */
if (sum + TLV_SIZE(tlvh) > length) {
if (IS_DEBUG_OSPF6_GR)
@ -157,8 +157,8 @@ static int ospf6_extract_grace_lsa_fields(struct ospf6_lsa *lsa,
}
switch (ntohs(tlvh->type)) {
case GRACE_PERIOD_TYPE:
gracePeriod = (struct grace_tlv_graceperiod *)tlvh;
case TLV_GRACE_PERIOD_TYPE:
gracePeriod = (struct tlv_grace_period *)tlvh;
*interval = ntohl(gracePeriod->interval);
sum += TLV_SIZE(tlvh);
@ -167,8 +167,8 @@ static int ospf6_extract_grace_lsa_fields(struct ospf6_lsa *lsa,
|| *interval < OSPF6_MIN_GRACE_INTERVAL)
return OSPF6_FAILURE;
break;
case RESTART_REASON_TYPE:
grReason = (struct grace_tlv_restart_reason *)tlvh;
case TLV_GRACE_RESTART_REASON_TYPE:
grReason = (struct tlv_grace_restart_reason *)tlvh;
*reason = grReason->reason;
sum += TLV_SIZE(tlvh);
@ -1218,8 +1218,8 @@ static int ospf6_grace_lsa_show_info(struct vty *vty, struct ospf6_lsa *lsa,
{
struct ospf6_lsa_header *lsah = NULL;
struct tlv_header *tlvh = NULL;
struct grace_tlv_graceperiod *gracePeriod;
struct grace_tlv_restart_reason *grReason;
struct tlv_grace_period *gracePeriod;
struct tlv_grace_restart_reason *grReason;
uint16_t length = 0;
int sum = 0;
@ -1240,9 +1240,8 @@ static int ospf6_grace_lsa_show_info(struct vty *vty, struct ospf6_lsa *lsa,
zlog_debug(" TLV info:");
}
for (tlvh = TLV_HDR_TOP(lsah); sum < length && tlvh;
for (tlvh = lsdesc_start(lsah); sum < length && tlvh;
tlvh = TLV_HDR_NEXT(tlvh)) {
/* Check TLV len */
if (sum + TLV_SIZE(tlvh) > length) {
if (vty)
@ -1255,8 +1254,8 @@ static int ospf6_grace_lsa_show_info(struct vty *vty, struct ospf6_lsa *lsa,
}
switch (ntohs(tlvh->type)) {
case GRACE_PERIOD_TYPE:
gracePeriod = (struct grace_tlv_graceperiod *)tlvh;
case TLV_GRACE_PERIOD_TYPE:
gracePeriod = (struct tlv_grace_period *)tlvh;
sum += TLV_SIZE(tlvh);
if (vty) {
@ -1272,8 +1271,8 @@ static int ospf6_grace_lsa_show_info(struct vty *vty, struct ospf6_lsa *lsa,
ntohl(gracePeriod->interval));
}
break;
case RESTART_REASON_TYPE:
grReason = (struct grace_tlv_restart_reason *)tlvh;
case TLV_GRACE_RESTART_REASON_TYPE:
grReason = (struct tlv_grace_restart_reason *)tlvh;
sum += TLV_SIZE(tlvh);
if (vty) {
if (use_json)

3
ospf6d/ospf6_interface.c
View File

@ -14,6 +14,7 @@
#include "plist.h"
#include "zclient.h"
#include "ospf6_proto.h"
#include "ospf6_lsa.h"
#include "ospf6_lsdb.h"
#include "ospf6_top.h"
@ -30,9 +31,9 @@
#include "ospf6d.h"
#include "ospf6_bfd.h"
#include "ospf6_zebra.h"
#include "ospf6_tlv.h"
#include "ospf6_gr.h"
#include "lib/json.h"
#include "ospf6_proto.h"
#include "lib/keychain.h"
#include "ospf6_auth_trailer.h"
#include "ospf6d/ospf6_interface_clippy.c"

250
ospf6d/ospf6_intra.c
View File

@ -32,6 +32,7 @@
#include "ospf6_flood.h"
#include "ospf6d.h"
#include "ospf6_spf.h"
#include "ospf6_tlv.h"
#include "ospf6_gr.h"
unsigned char conf_debug_ospf6_brouter = 0;
@ -43,41 +44,20 @@ uint32_t conf_debug_ospf6_brouter_specific_area_id;
/* RFC2740 3.4.3.1 Router-LSA */
/******************************/
/* OSPF6_LSTYPE_ROUTER */
static char *ospf6_router_lsa_get_nbr_id(struct ospf6_lsa *lsa, char *buf,
int buflen, int pos)
{
struct ospf6_router_lsa *router_lsa;
struct ospf6_router_lsdesc *lsdesc;
char *start, *end;
char buf1[INET_ADDRSTRLEN], buf2[INET_ADDRSTRLEN];
struct ospf6_router_lsdesc *lsdesc = nth_lsdesc(lsa->header, pos);
if (lsa) {
router_lsa = (struct ospf6_router_lsa
*)((char *)lsa->header
+ sizeof(struct ospf6_lsa_header));
start = (char *)router_lsa + sizeof(struct ospf6_router_lsa);
end = (char *)lsa->header + ntohs(lsa->header->length);
lsdesc = (struct ospf6_router_lsdesc
*)(start
+ pos * (sizeof(struct
ospf6_router_lsdesc)));
if ((char *)lsdesc + sizeof(struct ospf6_router_lsdesc)
<= end) {
if (buf && (buflen > INET_ADDRSTRLEN * 2)) {
inet_ntop(AF_INET,
&lsdesc->neighbor_interface_id, buf1,
sizeof(buf1));
inet_ntop(AF_INET, &lsdesc->neighbor_router_id,
buf2, sizeof(buf2));
snprintf(buf, buflen, "%s/%s", buf2, buf1);
return buf;
}
}
}
if (!lsdesc || !buf || buflen < (2 + 2 * INET_ADDRSTRLEN))
return NULL;
inet_ntop(AF_INET, &lsdesc->neighbor_interface_id, buf1, sizeof(buf1));
inet_ntop(AF_INET, &lsdesc->neighbor_router_id, buf2, sizeof(buf2));
snprintf(buf, buflen, "%s/%s", buf2, buf1);
return buf;
}
static int ospf6_router_lsa_show(struct vty *vty, struct ospf6_lsa *lsa,
@ -195,9 +175,7 @@ int ospf6_router_is_stub_router(struct ospf6_lsa *lsa)
struct ospf6_router_lsa *rtr_lsa;
if (lsa != NULL && OSPF6_LSA_IS_TYPE(ROUTER, lsa)) {
rtr_lsa = (struct ospf6_router_lsa
*)((caddr_t)lsa->header
+ sizeof(struct ospf6_lsa_header));
rtr_lsa = lsa_after_header(lsa->header);
if (!OSPF6_OPT_ISSET(rtr_lsa->options, OSPF6_OPT_R)) {
return OSPF6_IS_STUB_ROUTER;
@ -242,14 +220,12 @@ void ospf6_router_lsa_originate(struct event *thread)
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
router_lsa = (struct ospf6_router_lsa *)ospf6_lsa_header_end(lsa_header);
router_lsa = lsa_after_header(lsa_header);
ospf6_router_lsa_options_set(oa, router_lsa);
/* describe links for each interfaces */
lsdesc = (struct ospf6_router_lsdesc
*)((caddr_t)router_lsa
+ sizeof(struct ospf6_router_lsa));
lsdesc = lsdesc_start_lsa_type(lsa_header, OSPF6_LSTYPE_ROUTER);
for (ALL_LIST_ELEMENTS(oa->if_list, node, nnode, oi)) {
/* Interfaces in state Down or Loopback are not described */
@ -272,9 +248,9 @@ void ospf6_router_lsa_originate(struct event *thread)
&& ((size_t)((char *)lsdesc - buffer)
+ sizeof(struct ospf6_router_lsdesc)
> oa->router_lsa_size_limit)) {
if ((caddr_t)lsdesc
== (caddr_t)router_lsa
+ sizeof(struct ospf6_router_lsa)) {
if (lsdesc ==
lsdesc_start_lsa_type(lsa_header,
OSPF6_LSTYPE_ROUTER)) {
zlog_warn(
"Size limit setting for Router-LSA too short");
return;
@ -303,15 +279,13 @@ void ospf6_router_lsa_originate(struct event *thread)
/* Reset Buffer to fill next Router LSA */
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
router_lsa = (struct ospf6_router_lsa *)
ospf6_lsa_header_end(lsa_header);
router_lsa = lsa_after_header(lsa_header);
ospf6_router_lsa_options_set(oa, router_lsa);
/* describe links for each interfaces */
lsdesc = (struct ospf6_router_lsdesc
*)((caddr_t)router_lsa
+ sizeof(struct ospf6_router_lsa));
lsdesc = lsdesc_start_lsa_type(lsa_header,
OSPF6_LSTYPE_ROUTER);
link_state_id++;
}
@ -424,30 +398,13 @@ void ospf6_router_lsa_originate(struct event *thread)
static char *ospf6_network_lsa_get_ar_id(struct ospf6_lsa *lsa, char *buf,
int buflen, int pos)
{
char *start, *end, *current;
struct ospf6_network_lsa *network_lsa;
struct ospf6_network_lsdesc *lsdesc;
if (lsa) {
network_lsa = (struct ospf6_network_lsa
*)((caddr_t)lsa->header
+ sizeof(struct ospf6_lsa_header));
start = (char *)network_lsa + sizeof(struct ospf6_network_lsa);
end = (char *)lsa->header + ntohs(lsa->header->length);
current = start + pos * (sizeof(struct ospf6_network_lsdesc));
if ((current + sizeof(struct ospf6_network_lsdesc)) <= end) {
lsdesc = (struct ospf6_network_lsdesc *)current;
if (buf) {
inet_ntop(AF_INET, &lsdesc->router_id, buf,
buflen);
return buf;
}
}
}
struct ospf6_network_lsdesc *lsdesc = nth_lsdesc(lsa->header, pos);
if (!lsdesc || !buf || buflen < (1 + INET_ADDRSTRLEN))
return NULL;
inet_ntop(AF_INET, &lsdesc->router_id, buf, buflen);
return buf;
}
static int ospf6_network_lsa_show(struct vty *vty, struct ospf6_lsa *lsa,
@ -459,9 +416,7 @@ static int ospf6_network_lsa_show(struct vty *vty, struct ospf6_lsa *lsa,
char buf[128], options[32];
json_object *json_arr = NULL;
network_lsa =
(struct ospf6_network_lsa *)((caddr_t)lsa->header
+ sizeof(struct ospf6_lsa_header));
network_lsa = lsa_after_header(lsa->header);
ospf6_options_printbuf(network_lsa->options, options, sizeof(options));
if (use_json)
@ -563,23 +518,19 @@ void ospf6_network_lsa_originate(struct event *thread)
/* prepare buffer */
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
network_lsa =
(struct ospf6_network_lsa *)ospf6_lsa_header_end(lsa_header);
network_lsa = lsa_after_header(lsa_header);
/* Collect the interface's Link-LSAs to describe
network's optional capabilities */
type = htons(OSPF6_LSTYPE_LINK);
for (ALL_LSDB_TYPED(oi->lsdb, type, lsa)) {
link_lsa = (struct ospf6_link_lsa *)ospf6_lsa_header_end(
lsa->header);
link_lsa = lsa_after_header(lsa->header);
network_lsa->options[0] |= link_lsa->options[0];
network_lsa->options[1] |= link_lsa->options[1];
network_lsa->options[2] |= link_lsa->options[2];
}
lsdesc = (struct ospf6_network_lsdesc
*)((caddr_t)network_lsa
+ sizeof(struct ospf6_network_lsa));
lsdesc = lsdesc_start_lsa_type(lsa_header, OSPF6_LSTYPE_NETWORK);
/* set Link Description to the router itself */
lsdesc->router_id = oi->area->ospf6->router_id;
@ -623,52 +574,24 @@ void ospf6_network_lsa_originate(struct event *thread)
static char *ospf6_link_lsa_get_prefix_str(struct ospf6_lsa *lsa, char *buf,
int buflen, int pos)
{
char *start, *end, *current;
struct ospf6_link_lsa *link_lsa;
struct in6_addr in6;
struct ospf6_prefix *prefix;
int cnt = 0, prefixnum;
struct ospf6_link_lsa *link_lsa = lsa_after_header(lsa->header);
struct ospf6_prefix *prefix = nth_prefix(lsa->header, pos);
struct in6_addr in6 = { 0 };
if (lsa) {
link_lsa = (struct ospf6_link_lsa
*)((caddr_t)lsa->header
+ sizeof(struct ospf6_lsa_header));
if (!lsa || !prefix || !buf || buflen < (1 + INET6_ADDRSTRLEN))
return NULL;
/* position zero is used for the lladdr in the body of the LSA */
if (pos == 0) {
inet_ntop(AF_INET6, &link_lsa->linklocal_addr, buf,
buflen);
return (buf);
inet_ntop(AF_INET6, &link_lsa->linklocal_addr, buf, buflen);
return buf;
}
prefixnum = ntohl(link_lsa->prefix_num);
if (pos > prefixnum)
return NULL;
start = (char *)link_lsa + sizeof(struct ospf6_link_lsa);
end = (char *)lsa->header + ntohs(lsa->header->length);
current = start;
while (current + sizeof(struct ospf6_prefix) <= end) {
prefix = (struct ospf6_prefix *)current;
if (prefix->prefix_length == 0
|| current + OSPF6_PREFIX_SIZE(prefix) > end) {
return NULL;
}
if (cnt < (pos - 1)) {
current += OSPF6_PREFIX_SIZE(prefix);
cnt++;
} else {
memset(&in6, 0, sizeof(in6));
memcpy(&in6, OSPF6_PREFIX_BODY(prefix),
OSPF6_PREFIX_SPACE(
prefix->prefix_length));
OSPF6_PREFIX_SPACE(prefix->prefix_length));
inet_ntop(AF_INET6, &in6, buf, buflen);
return (buf);
}
}
}
return NULL;
return buf;
}
static int ospf6_link_lsa_show(struct vty *vty, struct ospf6_lsa *lsa,
@ -684,8 +607,7 @@ static int ospf6_link_lsa_show(struct vty *vty, struct ospf6_lsa *lsa,
json_object *json_arr = NULL;
char prefix_string[133];
link_lsa = (struct ospf6_link_lsa *)((caddr_t)lsa->header
+ sizeof(struct ospf6_lsa_header));
link_lsa = lsa_after_header(lsa->header);
ospf6_options_printbuf(link_lsa->options, options, sizeof(options));
inet_ntop(AF_INET6, &link_lsa->linklocal_addr, buf, sizeof(buf));
@ -795,7 +717,7 @@ void ospf6_link_lsa_originate(struct event *thread)
/* prepare buffer */
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
link_lsa = (struct ospf6_link_lsa *)ospf6_lsa_header_end(lsa_header);
link_lsa = lsa_after_header(lsa_header);
/* Fill Link-LSA */
link_lsa->priority = oi->priority;
@ -804,8 +726,7 @@ void ospf6_link_lsa_originate(struct event *thread)
sizeof(struct in6_addr));
link_lsa->prefix_num = htonl(oi->route_connected->count);
op = (struct ospf6_prefix *)((caddr_t)link_lsa
+ sizeof(struct ospf6_link_lsa));
op = lsdesc_start_lsa_type(lsa_header, OSPF6_LSTYPE_LINK);
/* connected prefix to advertise */
for (route = ospf6_route_head(oi->route_connected); route;
@ -846,52 +767,22 @@ static char *ospf6_intra_prefix_lsa_get_prefix_str(struct ospf6_lsa *lsa,
char *buf, int buflen,
int pos)
{
char *start, *end, *current;
struct ospf6_intra_prefix_lsa *intra_prefix_lsa;
struct in6_addr in6;
int prefixnum, cnt = 0;
struct ospf6_prefix *prefix;
struct ospf6_prefix *prefix = nth_prefix(lsa->header, pos);
struct in6_addr in6 = { 0 };
char tbuf[16];
if (lsa) {
intra_prefix_lsa =
(struct ospf6_intra_prefix_lsa
*)((caddr_t)lsa->header
+ sizeof(struct ospf6_lsa_header));
prefixnum = ntohs(intra_prefix_lsa->prefix_num);
if ((pos + 1) > prefixnum)
/* ensure buflen >= INET6_ADDRSTRLEN + '/128\0' */
if (!lsa || !prefix || !buf || buflen < (5 + INET6_ADDRSTRLEN))
return NULL;
start = (char *)intra_prefix_lsa
+ sizeof(struct ospf6_intra_prefix_lsa);
end = ospf6_lsa_end(lsa->header);
current = start;
while (current + sizeof(struct ospf6_prefix) <= end) {
prefix = (struct ospf6_prefix *)current;
if (prefix->prefix_length == 0
|| current + OSPF6_PREFIX_SIZE(prefix) > end) {
return NULL;
}
if (cnt < pos) {
current += OSPF6_PREFIX_SIZE(prefix);
cnt++;
} else {
memset(&in6, 0, sizeof(in6));
memcpy(&in6, OSPF6_PREFIX_BODY(prefix),
OSPF6_PREFIX_SPACE(
prefix->prefix_length));
OSPF6_PREFIX_SPACE(prefix->prefix_length));
inet_ntop(AF_INET6, &in6, buf, buflen);
snprintf(tbuf, sizeof(tbuf), "/%d",
prefix->prefix_length);
snprintf(tbuf, sizeof(tbuf), "/%d", prefix->prefix_length);
strlcat(buf, tbuf, buflen);
return (buf);
}
}
}
return NULL;
return buf;
}
static int ospf6_intra_prefix_lsa_show(struct vty *vty, struct ospf6_lsa *lsa,
@ -908,9 +799,7 @@ static int ospf6_intra_prefix_lsa_show(struct vty *vty, struct ospf6_lsa *lsa,
json_object *json_arr = NULL;
char prefix_string[133];
intra_prefix_lsa = (struct ospf6_intra_prefix_lsa
*)((caddr_t)lsa->header
+ sizeof(struct ospf6_lsa_header));
intra_prefix_lsa = lsa_after_header(lsa->header);
prefixnum = ntohs(intra_prefix_lsa->prefix_num);
@ -1037,8 +926,7 @@ void ospf6_intra_prefix_lsa_originate_stub(struct event *thread)
/* prepare buffer */
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
intra_prefix_lsa = (struct ospf6_intra_prefix_lsa *)ospf6_lsa_header_end(
lsa_header);
intra_prefix_lsa = lsa_after_header(lsa_header);
/* Fill Intra-Area-Prefix-LSA */
intra_prefix_lsa->ref_type = htons(OSPF6_LSTYPE_ROUTER);
@ -1122,12 +1010,10 @@ void ospf6_intra_prefix_lsa_originate_stub(struct event *thread)
/* put prefixes to advertise */
prefix_num = 0;
op = (struct ospf6_prefix *)((caddr_t)intra_prefix_lsa
+ sizeof(struct ospf6_intra_prefix_lsa));
op = lsdesc_start_lsa_type(lsa_header, OSPF6_LSTYPE_INTRA_PREFIX);
for (route = ospf6_route_head(route_advertise); route;
route = ospf6_route_best_next(route)) {
if (((caddr_t)op - (caddr_t)lsa_header) > MAX_LSA_PAYLOAD) {
intra_prefix_lsa->prefix_num = htons(prefix_num);
/* Fill LSA Header */
@ -1153,8 +1039,7 @@ void ospf6_intra_prefix_lsa_originate_stub(struct event *thread)
/* Prepare next buffer */
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
intra_prefix_lsa = (struct ospf6_intra_prefix_lsa *)
ospf6_lsa_header_end(lsa_header);
intra_prefix_lsa = lsa_after_header(lsa_header);
/* Fill Intra-Area-Prefix-LSA */
intra_prefix_lsa->ref_type = htons(OSPF6_LSTYPE_ROUTER);
@ -1163,10 +1048,8 @@ void ospf6_intra_prefix_lsa_originate_stub(struct event *thread)
/* Put next set of prefixes to advertise */
prefix_num = 0;
op = (struct ospf6_prefix
*)((caddr_t)intra_prefix_lsa
+ sizeof(struct
ospf6_intra_prefix_lsa));
op = lsdesc_start_lsa_type(lsa_header,
OSPF6_LSTYPE_INTRA_PREFIX);
}
op->prefix_length = route->prefix.prefixlen;
@ -1261,8 +1144,7 @@ void ospf6_intra_prefix_lsa_originate_transit(struct event *thread)
/* prepare buffer */
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
intra_prefix_lsa = (struct ospf6_intra_prefix_lsa *)ospf6_lsa_header_end(
lsa_header);
intra_prefix_lsa = lsa_after_header(lsa_header);
/* Fill Intra-Area-Prefix-LSA */
intra_prefix_lsa->ref_type = htons(OSPF6_LSTYPE_NETWORK);
@ -1311,9 +1193,7 @@ void ospf6_intra_prefix_lsa_originate_transit(struct event *thread)
}
}
link_lsa = (struct ospf6_link_lsa
*)((caddr_t)lsa->header
+ sizeof(struct ospf6_lsa_header));
link_lsa = lsa_after_header(lsa->header);
prefix_num = (unsigned short)ntohl(link_lsa->prefix_num);
start = (char *)link_lsa + sizeof(struct ospf6_link_lsa);
@ -1356,8 +1236,7 @@ void ospf6_intra_prefix_lsa_originate_transit(struct event *thread)
zlog_debug("Trailing garbage in %s", lsa->name);
}
op = (struct ospf6_prefix *)((caddr_t)intra_prefix_lsa
+ sizeof(struct ospf6_intra_prefix_lsa));
op = lsdesc_start_lsa_type(lsa_header, OSPF6_LSTYPE_INTRA_PREFIX);
prefix_num = 0;
for (route = ospf6_route_head(route_advertise); route;
@ -1658,10 +1537,7 @@ void ospf6_intra_prefix_route_ecmp_path(struct ospf6_area *oa,
}
continue;
}
intra_prefix_lsa =
(struct ospf6_intra_prefix_lsa *)
ospf6_lsa_header_end(
lsa->header);
intra_prefix_lsa = lsa_after_header(lsa->header);
if (intra_prefix_lsa->ref_adv_router
== oa->ospf6->router_id) {
@ -1742,8 +1618,7 @@ void ospf6_intra_prefix_lsa_add(struct ospf6_lsa *lsa)
oa = OSPF6_AREA(lsa->lsdb->data);
intra_prefix_lsa = (struct ospf6_intra_prefix_lsa *)ospf6_lsa_header_end(
lsa->header);
intra_prefix_lsa = lsa_after_header(lsa->header);
if (intra_prefix_lsa->ref_type == htons(OSPF6_LSTYPE_ROUTER) ||
intra_prefix_lsa->ref_type == htons(OSPF6_LSTYPE_NETWORK))
ospf6_linkstate_prefix(intra_prefix_lsa->ref_adv_router,
@ -1971,8 +1846,7 @@ void ospf6_intra_prefix_lsa_remove(struct ospf6_lsa *lsa)
oa = OSPF6_AREA(lsa->lsdb->data);
intra_prefix_lsa = (struct ospf6_intra_prefix_lsa *)ospf6_lsa_header_end(
lsa->header);
intra_prefix_lsa = lsa_after_header(lsa->header);
prefix_num = ntohs(intra_prefix_lsa->prefix_num);
start = (caddr_t)intra_prefix_lsa

76
ospf6d/ospf6_intra.h
View File

@ -13,10 +13,13 @@ extern in_addr_t conf_debug_ospf6_brouter_specific_area_id;
#define OSPF6_DEBUG_BROUTER_SUMMARY 0x01
#define OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER 0x02
#define OSPF6_DEBUG_BROUTER_SPECIFIC_AREA 0x04
#define OSPF6_DEBUG_BROUTER_ON() \
(conf_debug_ospf6_brouter |= OSPF6_DEBUG_BROUTER_SUMMARY)
#define OSPF6_DEBUG_BROUTER_OFF() \
(conf_debug_ospf6_brouter &= ~OSPF6_DEBUG_BROUTER_SUMMARY)
#define IS_OSPF6_DEBUG_BROUTER \
(conf_debug_ospf6_brouter & OSPF6_DEBUG_BROUTER_SUMMARY)
@ -26,14 +29,17 @@ extern in_addr_t conf_debug_ospf6_brouter_specific_area_id;
conf_debug_ospf6_brouter |= \
OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER; \
} while (0)
#define OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER_OFF() \
do { \
conf_debug_ospf6_brouter_specific_router_id = 0; \
conf_debug_ospf6_brouter &= \
~OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER; \
} while (0)
#define IS_OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER \
(conf_debug_ospf6_brouter & OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER)
#define IS_OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER_ID(router_id) \
(IS_OSPF6_DEBUG_BROUTER_SPECIFIC_ROUTER \
&& conf_debug_ospf6_brouter_specific_router_id == (router_id))
@ -43,42 +49,21 @@ extern in_addr_t conf_debug_ospf6_brouter_specific_area_id;
conf_debug_ospf6_brouter_specific_area_id = (area_id); \
conf_debug_ospf6_brouter |= OSPF6_DEBUG_BROUTER_SPECIFIC_AREA; \
} while (0)
#define OSPF6_DEBUG_BROUTER_SPECIFIC_AREA_OFF() \
do { \
conf_debug_ospf6_brouter_specific_area_id = 0; \
conf_debug_ospf6_brouter &= \
~OSPF6_DEBUG_BROUTER_SPECIFIC_AREA; \
} while (0)
#define IS_OSPF6_DEBUG_BROUTER_SPECIFIC_AREA \
(conf_debug_ospf6_brouter & OSPF6_DEBUG_BROUTER_SPECIFIC_AREA)
#define IS_OSPF6_DEBUG_BROUTER_SPECIFIC_AREA_ID(area_id) \
(IS_OSPF6_DEBUG_BROUTER_SPECIFIC_AREA \
&& conf_debug_ospf6_brouter_specific_area_id == (area_id))
/* Router-LSA */
#define OSPF6_ROUTER_LSA_MIN_SIZE 4U
struct ospf6_router_lsa {
uint8_t bits;
uint8_t options[3];
/* followed by ospf6_router_lsdesc(s) */
};
/* Link State Description in Router-LSA */
#define OSPF6_ROUTER_LSDESC_FIX_SIZE 16U
struct ospf6_router_lsdesc {
uint8_t type;
uint8_t reserved;
uint16_t metric; /* output cost */
uint32_t interface_id;
uint32_t neighbor_interface_id;
in_addr_t neighbor_router_id;
};
#define OSPF6_ROUTER_LSDESC_POINTTOPOINT 1
#define OSPF6_ROUTER_LSDESC_TRANSIT_NETWORK 2
#define OSPF6_ROUTER_LSDESC_STUB_NETWORK 3
#define OSPF6_ROUTER_LSDESC_VIRTUAL_LINK 4
enum stub_router_mode {
OSPF6_NOT_STUB_ROUTER,
OSPF6_IS_STUB_ROUTER,
@ -92,49 +77,16 @@ enum stub_router_mode {
: 0)
#define ROUTER_LSDESC_GET_METRIC(x) \
(ntohs(((struct ospf6_router_lsdesc *)(x))->metric))
#define ROUTER_LSDESC_GET_IFID(x) \
(ntohl(((struct ospf6_router_lsdesc *)(x))->interface_id))
#define ROUTER_LSDESC_GET_NBR_IFID(x) \
(ntohl(((struct ospf6_router_lsdesc *)(x))->neighbor_interface_id))
#define ROUTER_LSDESC_GET_NBR_ROUTERID(x) \
(((struct ospf6_router_lsdesc *)(x))->neighbor_router_id)
/* Network-LSA */
#define OSPF6_NETWORK_LSA_MIN_SIZE 4U
struct ospf6_network_lsa {
uint8_t reserved;
uint8_t options[3];
/* followed by ospf6_netowrk_lsd(s) */
};
/* Link State Description in Router-LSA */
#define OSPF6_NETWORK_LSDESC_FIX_SIZE 4U
struct ospf6_network_lsdesc {
in_addr_t router_id;
};
#define NETWORK_LSDESC_GET_NBR_ROUTERID(x) \
(((struct ospf6_network_lsdesc *)(x))->router_id)
/* Link-LSA */
#define OSPF6_LINK_LSA_MIN_SIZE 24U /* w/o 1st IPv6 prefix */
struct ospf6_link_lsa {
uint8_t priority;
uint8_t options[3];
struct in6_addr linklocal_addr;
uint32_t prefix_num;
/* followed by ospf6 prefix(es) */
};
/* Intra-Area-Prefix-LSA */
#define OSPF6_INTRA_PREFIX_LSA_MIN_SIZE 12U /* w/o 1st IPv6 prefix */
struct ospf6_intra_prefix_lsa {
uint16_t prefix_num;
uint16_t ref_type;
uint32_t ref_id;
in_addr_t ref_adv_router;
/* followed by ospf6 prefix(es) */
};
#define OSPF6_ROUTER_LSA_SCHEDULE(oa) \
do { \
@ -142,18 +94,21 @@ struct ospf6_intra_prefix_lsa {
event_add_event(master, ospf6_router_lsa_originate, \
oa, 0, &(oa)->thread_router_lsa); \
} while (0)
#define OSPF6_NETWORK_LSA_SCHEDULE(oi) \
do { \
if (!CHECK_FLAG((oi)->flag, OSPF6_INTERFACE_DISABLE)) \
event_add_event(master, ospf6_network_lsa_originate, \
oi, 0, &(oi)->thread_network_lsa); \
} while (0)
#define OSPF6_LINK_LSA_SCHEDULE(oi) \
do { \
if (!CHECK_FLAG((oi)->flag, OSPF6_INTERFACE_DISABLE)) \
event_add_event(master, ospf6_link_lsa_originate, oi, \
0, &(oi)->thread_link_lsa); \
} while (0)
#define OSPF6_INTRA_PREFIX_LSA_SCHEDULE_STUB(oa) \
do { \
if (CHECK_FLAG((oa)->flag, OSPF6_AREA_ENABLE)) \
@ -161,6 +116,7 @@ struct ospf6_intra_prefix_lsa {
master, ospf6_intra_prefix_lsa_originate_stub, \
oa, 0, &(oa)->thread_intra_prefix_lsa); \
} while (0)
#define OSPF6_INTRA_PREFIX_LSA_SCHEDULE_TRANSIT(oi) \
do { \
if (!CHECK_FLAG((oi)->flag, OSPF6_INTERFACE_DISABLE)) \

83
ospf6d/ospf6_lsa.c
View File

@ -37,8 +37,85 @@ DEFINE_MTYPE_STATIC(OSPF6D, OSPF6_LSA, "OSPF6 LSA");
DEFINE_MTYPE_STATIC(OSPF6D, OSPF6_LSA_HEADER, "OSPF6 LSA header");
DEFINE_MTYPE_STATIC(OSPF6D, OSPF6_LSA_SUMMARY, "OSPF6 LSA summary");
const uint8_t ospf6_lsa_min_size[OSPF6_LSTYPE_SIZE] = {
[OSPF6_LSTYPE_UNKNOWN] = 0,
[0x00ff & OSPF6_LSTYPE_ROUTER] = OSPF6_ROUTER_LSA_MIN_SIZE,
[0x00ff & OSPF6_LSTYPE_NETWORK] = OSPF6_NETWORK_LSA_MIN_SIZE,
[0x00ff & OSPF6_LSTYPE_INTER_PREFIX] = OSPF6_INTER_PREFIX_LSA_MIN_SIZE,
[0x00ff & OSPF6_LSTYPE_INTER_ROUTER] = OSPF6_INTER_ROUTER_LSA_FIX_SIZE,
[0x00ff & OSPF6_LSTYPE_AS_EXTERNAL] = OSPF6_AS_EXTERNAL_LSA_MIN_SIZE,
[0x00ff & OSPF6_LSTYPE_GROUP_MEMBERSHIP] = 0, /* Unused */
[0x00ff & OSPF6_LSTYPE_TYPE_7] = OSPF6_AS_EXTERNAL_LSA_MIN_SIZE,
[0x00ff & OSPF6_LSTYPE_LINK] = OSPF6_LINK_LSA_MIN_SIZE,
[0x00ff & OSPF6_LSTYPE_INTRA_PREFIX] = OSPF6_INTRA_PREFIX_LSA_MIN_SIZE,
[0x00ff & OSPF6_LSTYPE_GRACE_LSA] = 0
};
void *lsdesc_start_lsa_type(struct ospf6_lsa_header *header, int lsa_type)
{
uint8_t t = (0x00ff & lsa_type);
if (t == OSPF6_LSTYPE_UNKNOWN || t >= OSPF6_LSTYPE_SIZE) {
zlog_debug("Cannot get descriptor offset for unknown lsa type 0x%x",
t);
return ospf6_lsa_end(header);
}
return (char *)lsa_after_header(header) + ospf6_lsa_min_size[t];
}
void *lsdesc_start(struct ospf6_lsa_header *header)
{
return lsdesc_start_lsa_type(header, ntohs(header->type));
}
static struct ospf6_lsa_handler *lsa_handlers[OSPF6_LSTYPE_SIZE];
void *nth_lsdesc(struct ospf6_lsa_header *header, int pos)
{
char *lsdesc = lsdesc_start(header);
char *lsa_end = ospf6_lsa_end(header);
char *nth;
int lsdesc_size;
if (ntohs(header->type) == OSPF6_LSTYPE_ROUTER)
lsdesc_size = OSPF6_ROUTER_LSDESC_FIX_SIZE;
else if (ntohs(header->type) == OSPF6_LSTYPE_NETWORK)
lsdesc_size = OSPF6_NETWORK_LSDESC_FIX_SIZE;
else
return NULL;
nth = lsdesc + (pos * lsdesc_size);
if (nth + lsdesc_size <= lsa_end)
return nth;
return NULL;
}
void *nth_prefix(struct ospf6_lsa_header *header, int pos)
{
struct ospf6_prefix *prefix = lsdesc_start(header);
char *end = ospf6_lsa_end(header);
int i = 0;
if (ntohs(header->type) != OSPF6_LSTYPE_LINK &&
ntohs(header->type) != OSPF6_LSTYPE_INTRA_PREFIX)
return NULL;
if (pos == 0)
return prefix;
while ((char *)prefix < end &&
(char *)prefix + OSPF6_PREFIX_SIZE(prefix) <= end) {
if (i == pos)
return prefix;
i++;
prefix = OSPF6_PREFIX_NEXT(prefix);
}
return NULL;
}
struct ospf6 *ospf6_get_by_lsdb(struct ospf6_lsa *lsa)
{
struct ospf6 *ospf6 = NULL;
@ -65,7 +142,7 @@ static int ospf6_unknown_lsa_show(struct vty *vty, struct ospf6_lsa *lsa,
{
char *start, *end, *current;
start = ospf6_lsa_header_end(lsa->header);
start = lsa_after_header(lsa->header);
end = ospf6_lsa_end(lsa->header);
if (use_json) {
@ -234,8 +311,8 @@ int ospf6_lsa_is_changed(struct ospf6_lsa *lsa1, struct ospf6_lsa *lsa2)
if (length <= 0)
return 0;
return memcmp(ospf6_lsa_header_end(lsa1->header),
ospf6_lsa_header_end(lsa2->header), length);
return memcmp(lsa_after_header(lsa1->header),
lsa_after_header(lsa2->header), length);
}
/* ospf6 age functions */

102
ospf6d/ospf6_lsa.h
View File

@ -87,11 +87,17 @@ struct ospf6_lsa_header {
uint16_t length; /* LSA length */
};
static inline char *ospf6_lsa_header_end(struct ospf6_lsa_header *header)
{
return (char *)header + sizeof(struct ospf6_lsa_header);
}
static inline void *lsa_after_header(struct ospf6_lsa_header *header)
{
return (char *)header + sizeof(struct ospf6_lsa_header);
}
static inline char *ospf6_lsa_end(struct ospf6_lsa_header *header)
{
return (char *)header + ntohs(header->length);
@ -116,6 +122,94 @@ static inline uint16_t ospf6_lsa_size(struct ospf6_lsa_header *header)
#define OSPF6_LSA_IS_CHANGED(L1, L2) ospf6_lsa_is_changed (L1, L2)
#define OSPF6_LSA_IS_SEQWRAP(L) ((L)->header->seqnum == htonl(OSPF_MAX_SEQUENCE_NUMBER + 1))
/* Router-LSA */
#define OSPF6_ROUTER_LSA_MIN_SIZE 4U
struct ospf6_router_lsa {
uint8_t bits;
uint8_t options[3];
/* followed by ospf6_router_lsdesc(s) */
};
/* Link State Description in Router-LSA */
#define OSPF6_ROUTER_LSDESC_FIX_SIZE 16U
struct ospf6_router_lsdesc {
uint8_t type;
uint8_t reserved;
uint16_t metric; /* output cost */
uint32_t interface_id;
uint32_t neighbor_interface_id;
in_addr_t neighbor_router_id;
};
#define OSPF6_ROUTER_LSDESC_POINTTOPOINT 1
#define OSPF6_ROUTER_LSDESC_TRANSIT_NETWORK 2
#define OSPF6_ROUTER_LSDESC_STUB_NETWORK 3
#define OSPF6_ROUTER_LSDESC_VIRTUAL_LINK 4
/* Network-LSA */
#define OSPF6_NETWORK_LSA_MIN_SIZE 4U
struct ospf6_network_lsa {
uint8_t reserved;
uint8_t options[3];
/* followed by ospf6_network_lsdesc(s) */
};
/* Link State Description in Network-LSA */
#define OSPF6_NETWORK_LSDESC_FIX_SIZE 4U
struct ospf6_network_lsdesc {
in_addr_t router_id;
};
#define NETWORK_LSDESC_GET_NBR_ROUTERID(x) \
(((struct ospf6_network_lsdesc *)(x))->router_id)
/* Inter-Area-Prefix-LSA */
#define OSPF6_INTER_PREFIX_LSA_MIN_SIZE 4U /* w/o IPv6 prefix */
struct ospf6_inter_prefix_lsa {
uint32_t metric;
struct ospf6_prefix prefix;
};
/* Inter-Area-Router-LSA */
#define OSPF6_INTER_ROUTER_LSA_FIX_SIZE 12U
struct ospf6_inter_router_lsa {
uint8_t mbz;
uint8_t options[3];
uint32_t metric;
uint32_t router_id;
};
/* AS-External-LSA */
#define OSPF6_AS_EXTERNAL_LSA_MIN_SIZE 4U /* w/o IPv6 prefix */
struct ospf6_as_external_lsa {
uint32_t bits_metric;
struct ospf6_prefix prefix;
/* followed by none or one forwarding address */
/* followed by none or one external route tag */
/* followed by none or one referenced LS-ID */
};
/* FIXME: move nssa lsa here. */
/* Link-LSA */
#define OSPF6_LINK_LSA_MIN_SIZE 24U /* w/o 1st IPv6 prefix */
struct ospf6_link_lsa {
uint8_t priority;
uint8_t options[3];
struct in6_addr linklocal_addr;
uint32_t prefix_num;
/* followed by ospf6 prefix(es) */
};
/* Intra-Area-Prefix-LSA */
#define OSPF6_INTRA_PREFIX_LSA_MIN_SIZE 12U /* w/o 1st IPv6 prefix */
struct ospf6_intra_prefix_lsa {
uint16_t prefix_num;
uint16_t ref_type;
uint32_t ref_id;
in_addr_t ref_adv_router;
/* followed by ospf6 prefix(es) */
};
struct ospf6_lsa {
char name[64]; /* dump string */
@ -146,6 +240,7 @@ struct ospf6_lsa {
bool tobe_acknowledged;
};
#define OSPF6_LSA_HEADERONLY 0x01
#define OSPF6_LSA_FLOODBACK 0x02
#define OSPF6_LSA_DUPLICATE 0x04
@ -274,4 +369,11 @@ extern void ospf6_flush_self_originated_lsas_now(struct ospf6 *ospf6);
extern struct ospf6 *ospf6_get_by_lsdb(struct ospf6_lsa *lsa);
struct ospf6_lsa *ospf6_find_external_lsa(struct ospf6 *ospf6,
struct prefix *p);
void *lsdesc_start_lsa_type(struct ospf6_lsa_header *header, int lsa_type);
void *lsdesc_start(struct ospf6_lsa_header *header);
void *nth_lsdesc(struct ospf6_lsa_header *header, int pos);
void *nth_prefix(struct ospf6_lsa_header *header, int pos);
#endif /* OSPF6_LSA_H */

3
ospf6d/ospf6_lsdb.c
View File

@ -229,8 +229,7 @@ struct ospf6_lsa *ospf6_find_inter_prefix_lsa(struct ospf6 *ospf6,
struct ospf6_inter_prefix_lsa *prefix_lsa;
struct prefix prefix;
prefix_lsa = (struct ospf6_inter_prefix_lsa *)
ospf6_lsa_header_end(lsa->header);
prefix_lsa = lsa_after_header(lsa->header);
prefix.family = AF_INET6;
prefix.prefixlen = prefix_lsa->prefix.prefix_length;
ospf6_prefix_in6_addr(&prefix.u.prefix6, prefix_lsa,

12
ospf6d/ospf6_message.c
View File

@ -33,6 +33,7 @@
#include "ospf6_flood.h"
#include "ospf6d.h"
#include "ospf6_tlv.h"
#include "ospf6_gr.h"
#include <netinet/ip6.h>
#include "lib/libospf.h"
@ -1303,9 +1304,7 @@ static unsigned ospf6_lsa_examin(struct ospf6_lsa_header *lsah,
4 bytes of referenced link state ID. */
if (headeronly)
break;
as_external_lsa =
(struct ospf6_as_external_lsa
*)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE);
as_external_lsa = lsa_after_header(lsah);
exp_length =
OSPF6_LSA_HEADER_SIZE + OSPF6_AS_EXTERNAL_LSA_MIN_SIZE;
/* To find out if the last optional field (Referenced Link State
@ -1350,8 +1349,7 @@ static unsigned ospf6_lsa_examin(struct ospf6_lsa_header *lsah,
by N>=0 IPv6 prefix blocks (with N declared beforehand). */
if (headeronly)
break;
link_lsa = (struct ospf6_link_lsa *)((caddr_t)lsah
+ OSPF6_LSA_HEADER_SIZE);
link_lsa = lsa_after_header(lsah);
return ospf6_prefixes_examin(
(struct ospf6_prefix *)((caddr_t)link_lsa
+ OSPF6_LINK_LSA_MIN_SIZE),
@ -1366,9 +1364,7 @@ static unsigned ospf6_lsa_examin(struct ospf6_lsa_header *lsah,
*/
if (headeronly)
break;
intra_prefix_lsa =
(struct ospf6_intra_prefix_lsa
*)((caddr_t)lsah + OSPF6_LSA_HEADER_SIZE);
intra_prefix_lsa = lsa_after_header(lsah);
return ospf6_prefixes_examin(
(struct ospf6_prefix
*)((caddr_t)intra_prefix_lsa

1
ospf6d/ospf6_neighbor.c
View File

@ -30,6 +30,7 @@
#include "ospf6_lsa.h"
#include "ospf6_spf.h"
#include "ospf6_zebra.h"
#include "ospf6_tlv.h"
#include "ospf6_gr.h"
#include "lib/json.h"

21
ospf6d/ospf6_nssa.c
View File

@ -52,8 +52,7 @@ static int ospf6_abr_nssa_am_elected(struct ospf6_area *oa)
/* Verify all the router LSA to compare the router ID */
for (ALL_LSDB_TYPED(oa->lsdb, type, lsa)) {
router_lsa = (struct ospf6_router_lsa *)ospf6_lsa_header_end(
lsa->header);
router_lsa = lsa_after_header(lsa->header);
/* ignore non-ABR routers */
if (!CHECK_FLAG(router_lsa->bits, OSPF6_ROUTER_BIT_B))
@ -414,8 +413,7 @@ static struct ospf6_lsa *ospf6_lsa_translated_nssa_new(struct ospf6_area *area,
}
/* find the translated Type-5 for this Type-7 */
nssa = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
type7->header);
nssa = lsa_after_header(type7->header);
prefix.family = AF_INET6;
prefix.prefixlen = nssa->prefix.prefix_length;
ospf6_prefix_in6_addr(&prefix.u.prefix6, nssa, &nssa->prefix);
@ -435,10 +433,8 @@ static struct ospf6_lsa *ospf6_lsa_translated_nssa_new(struct ospf6_area *area,
/* prepare buffer */
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
extnew = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa_header);
ext = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
type7->header);
extnew = lsa_after_header(lsa_header);
ext = lsa_after_header(type7->header);
old_ptr =
(caddr_t)((caddr_t)ext + sizeof(struct ospf6_as_external_lsa));
new_ptr = (caddr_t)((caddr_t)extnew
@ -546,8 +542,7 @@ struct ospf6_lsa *ospf6_translated_nssa_refresh(struct ospf6_area *area,
"%s: try to find translated Type-5 LSA for %s",
__func__, type7->name);
ext_lsa = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
type7->header);
ext_lsa = lsa_after_header(type7->header);
prefix.family = AF_INET6;
prefix.prefixlen = ext_lsa->prefix.prefix_length;
ospf6_prefix_in6_addr(&prefix.u.prefix6, ext_lsa,
@ -614,8 +609,7 @@ static void ospf6_abr_translate_nssa(struct ospf6_area *area,
struct ospf6 *ospf6;
ospf6 = area->ospf6;
nssa_lsa = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa->header);
nssa_lsa = lsa_after_header(lsa->header);
if (!CHECK_FLAG(nssa_lsa->prefix.prefix_options,
OSPF6_PREFIX_OPTION_P)) {
@ -1240,8 +1234,7 @@ void ospf6_nssa_lsa_originate(struct ospf6_route *route,
/* prepare buffer */
memset(buffer, 0, sizeof(buffer));
lsa_header = (struct ospf6_lsa_header *)buffer;
as_external_lsa = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa_header);
as_external_lsa = lsa_after_header(lsa_header);
p = (caddr_t)((caddr_t)as_external_lsa
+ sizeof(struct ospf6_as_external_lsa));

5
ospf6d/ospf6_proto.h
View File

@ -16,11 +16,12 @@
#define ALLSPFROUTERS6 "ff02::5"
#define ALLDROUTERS6 "ff02::6"
#define OSPF6_ROUTER_BIT_W (1 << 3)
/* RFC 5340 A.4.3 Router-LSAs Options field */
#define OSPF6_ROUTER_BIT_NT (1 << 4)
#define OSPF6_ROUTER_BIT_W (1 << 3) /* DEPRECATED */
#define OSPF6_ROUTER_BIT_V (1 << 2)
#define OSPF6_ROUTER_BIT_E (1 << 1)
#define OSPF6_ROUTER_BIT_B (1 << 0)
#define OSPF6_ROUTER_BIT_NT (1 << 4)
/* OSPF options */

8
ospf6d/ospf6_spf.c
View File

@ -16,11 +16,11 @@
#include "frrevent.h"
#include "lib_errors.h"
#include "ospf6_proto.h"
#include "ospf6_lsa.h"
#include "ospf6_lsdb.h"
#include "ospf6_route.h"
#include "ospf6_area.h"
#include "ospf6_proto.h"
#include "ospf6_abr.h"
#include "ospf6_asbr.h"
#include "ospf6_spf.h"
@ -290,8 +290,7 @@ static void ospf6_nexthop_calc(struct ospf6_vertex *w, struct ospf6_vertex *v,
!= lsa->header->id)
continue;
link_lsa = (struct ospf6_link_lsa *)ospf6_lsa_header_end(
lsa->header);
link_lsa = lsa_after_header(lsa->header);
if (IS_OSPF6_DEBUG_SPF(PROCESS)) {
inet_ntop(AF_INET6, &link_lsa->linklocal_addr, buf,
sizeof(buf));
@ -1136,8 +1135,7 @@ int ospf6_ase_calculate_route(struct ospf6 *ospf6, struct ospf6_lsa *lsa,
return 0;
}
external = (struct ospf6_as_external_lsa *)ospf6_lsa_header_end(
lsa->header);
external = lsa_after_header(lsa->header);
prefix.family = AF_INET6;
prefix.prefixlen = external->prefix.prefix_length;
ospf6_prefix_in6_addr(&prefix.u.prefix6, external, &external->prefix);

55
ospf6d/ospf6_tlv.h Normal file
View File

@ -0,0 +1,55 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* OSPFv3 Type Length Value.
*
*/
#ifndef OSPF6_TLV_H
#define OSPF6_TLV_H
/*
* Generic TLV (type, length, value) macros
*/
struct tlv_header {
uint16_t type; /* Type of Value */
uint16_t length; /* Length of Value portion only, in bytes */
};
#ifdef roundup
#define ROUNDUP(val, gran) roundup(val, gran)
#else /* roundup */
#define ROUNDUP(val, gran) (((val)-1 | (gran)-1) + 1)
#endif /* roundup */
#define TLV_HDR_SIZE (sizeof(struct tlv_header))
#define TLV_BODY_SIZE(tlvh) (ROUNDUP(ntohs((tlvh)->length), sizeof(uint32_t)))
#define TLV_SIZE(tlvh) ((uint32_t)(TLV_HDR_SIZE + TLV_BODY_SIZE(tlvh)))
#define TLV_HDR_NEXT(tlvh) \
((struct tlv_header *)((char *)(tlvh) + TLV_SIZE(tlvh)))
/*
* RFC 5187 - OSPFv3 Graceful Restart - Grace-LSA
* Graceful restart predates Extended-LSA TLVs and IANA TLV register.
*/
/* Grace period TLV. */
#define TLV_GRACE_PERIOD_TYPE 1
#define TLV_GRACE_PERIOD_LENGTH 4
struct tlv_grace_period {
struct tlv_header header;
uint32_t interval;
};
/* Restart reason TLV. */
#define TLV_GRACE_RESTART_REASON_TYPE 2
#define TLV_GRACE_RESTART_REASON_LENGTH 1
struct tlv_grace_restart_reason {
struct tlv_header header;
uint8_t reason;
uint8_t reserved[3];
};
#endif /* OSPF6_TLV_H */

1
ospf6d/ospf6_top.c
View File

@ -37,6 +37,7 @@
#include "ospf6_intra.h"
#include "ospf6_spf.h"
#include "ospf6d.h"
#include "ospf6_tlv.h"
#include "ospf6_gr.h"
#include "lib/json.h"
#include "ospf6_nssa.h"

1
ospf6d/ospf6_zebra.c
View File

@ -27,6 +27,7 @@
#include "ospf6_zebra.h"
#include "ospf6d.h"
#include "ospf6_area.h"
#include "ospf6_tlv.h"
#include "ospf6_gr.h"
#include "lib/json.h"

1
ospf6d/ospf6d.c
View File

@ -30,6 +30,7 @@
#include "ospf6_flood.h"
#include "ospf6d.h"
#include "ospf6_bfd.h"
#include "ospf6_tlv.h"
#include "ospf6_gr.h"
#include "lib/json.h"
#include "ospf6_nssa.h"

1
ospf6d/subdir.am
View File

@ -58,6 +58,7 @@ noinst_HEADERS += \
ospf6d/ospf6_route.h \
ospf6d/ospf6_routemap_nb.h \
ospf6d/ospf6_spf.h \
ospf6d/ospf6_tlv.h \
ospf6d/ospf6_top.h \
ospf6d/ospf6_zebra.h \
ospf6d/ospf6d.h \

1
tests/ospf6d/test_lsdb.c
View File

@ -12,6 +12,7 @@
#include "vector.h"
#include "vty.h"
#include "ospf6d/ospf6_proto.h" /* for struct ospf6_prefix */
#include "ospf6d/ospf6_lsa.h"
#include "ospf6d/ospf6_lsdb.h"