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ospfd: Force Opaque LSA & co to default VRF

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Ospf segfault when Router Information is enabled in a non default VRF,
see issue #13144.

This patch forces vrf_id to default VRF for Opaque LSA and extension based
on Opaque LSA: Router Information, Traffic Engineering, Extended Prefix,
Extended Link and Segment Routing. Indeed, non default VRF is not yet
supported for Opaque LSA & co.

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>
This commit is contained in:
Olivier Dugeon 2023-04-07 22:48:24 +02:00
parent 0633fb7856
commit 30ce6361b9
3 changed files with 46 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
ospfd/ospf_opaque.c
View File

@ -544,7 +544,7 @@ register_opaque_info_per_type(struct ospf_opaque_functab *functab,
listnode_add(new->area->opaque_lsa_self, oipt);
break;
case OSPF_OPAQUE_AS_LSA:
top = ospf_lookup_by_vrf_id(new->vrf_id);
top = ospf_lookup_by_vrf_id(VRF_DEFAULT);
if (new->area != NULL && (top = new->area->ospf) == NULL) {
free_opaque_info_per_type(oipt, true);
oipt = NULL;
@ -652,7 +652,7 @@ lookup_opaque_info_by_type(struct ospf_lsa *lsa)
"Type-10 Opaque-LSA: Reference to AREA is missing?");
break;
case OSPF_OPAQUE_AS_LSA:
top = ospf_lookup_by_vrf_id(lsa->vrf_id);
top = ospf_lookup_by_vrf_id(VRF_DEFAULT);
if ((area = lsa->area) != NULL && (top = area->ospf) == NULL) {
flog_warn(
EC_OSPF_LSA,
@ -758,6 +758,13 @@ DEFUN (capability_opaque,
{
VTY_DECLVAR_INSTANCE_CONTEXT(ospf, ospf);
/* Check that OSPF is using default VRF */
if (ospf->vrf_id != VRF_DEFAULT) {
vty_out(vty,
"OSPF Opaque LSA is only supported in default VRF\n");
return CMD_WARNING_CONFIG_FAILED;
}
/* Turn on the "master switch" of opaque-lsa capability. */
if (!CHECK_FLAG(ospf->config, OSPF_OPAQUE_CAPABLE)) {
if (IS_DEBUG_OSPF_EVENT)
@ -1588,7 +1595,7 @@ struct ospf_lsa *ospf_opaque_lsa_install(struct ospf_lsa *lsa, int rt_recalc)
}
break;
case OSPF_OPAQUE_AS_LSA:
top = ospf_lookup_by_vrf_id(lsa->vrf_id);
top = ospf_lookup_by_vrf_id(VRF_DEFAULT);
if (lsa->area != NULL && (top = lsa->area->ospf) == NULL) {
/* Above conditions must have passed. */
flog_warn(EC_OSPF_LSA, "%s: Something wrong?",
@ -1615,7 +1622,7 @@ struct ospf_lsa *ospf_opaque_lsa_refresh(struct ospf_lsa *lsa)
struct ospf_opaque_functab *functab;
struct ospf_lsa *new = NULL;
ospf = ospf_lookup_by_vrf_id(lsa->vrf_id);
ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT);
if ((functab = ospf_opaque_functab_lookup(lsa)) == NULL
|| functab->lsa_refresher == NULL) {
@ -1752,7 +1759,7 @@ void ospf_opaque_lsa_reoriginate_schedule(void *lsa_type_dependent,
/* Generate a dummy lsa to be passed for a lookup function. */
lsa = pseudo_lsa(oi, area, lsa_type, opaque_type);
lsa->vrf_id = top->vrf_id;
lsa->vrf_id = VRF_DEFAULT;
if ((oipt = lookup_opaque_info_by_type(lsa)) == NULL) {
struct ospf_opaque_functab *functab;
@ -1987,7 +1994,7 @@ void ospf_opaque_lsa_refresh_schedule(struct ospf_lsa *lsa0)
ospf_ls_retransmit_delete_nbr_area(lsa->area, lsa);
break;
case OSPF_OPAQUE_AS_LSA:
top = ospf_lookup_by_vrf_id(lsa0->vrf_id);
top = ospf_lookup_by_vrf_id(VRF_DEFAULT);
if ((lsa0->area != NULL) && (lsa0->area->ospf != NULL))
top = lsa0->area->ospf;
ospf_ls_retransmit_delete_nbr_as(top, lsa);
@ -2037,7 +2044,7 @@ void ospf_opaque_lsa_flush_schedule(struct ospf_lsa *lsa0)
struct ospf_lsa *lsa;
struct ospf *top;
top = ospf_lookup_by_vrf_id(lsa0->vrf_id);
top = ospf_lookup_by_vrf_id(VRF_DEFAULT);
if ((oipt = lookup_opaque_info_by_type(lsa0)) == NULL
|| (oipi = lookup_opaque_info_by_id(oipt, lsa0)) == NULL) {

39
ospfd/ospf_ri.c
View File

@ -798,13 +798,10 @@ static struct ospf_lsa *ospf_router_info_lsa_new(struct ospf_area *area)
/* Now, create an OSPF LSA instance. */
new = ospf_lsa_new_and_data(length);
/* Routing Information is only supported for default VRF */
new->vrf_id = VRF_DEFAULT;
new->area = area;
if (new->area && new->area->ospf)
new->vrf_id = new->area->ospf->vrf_id;
else
new->vrf_id = VRF_DEFAULT;
SET_FLAG(new->flags, OSPF_LSA_SELF);
memcpy(new->data, lsah, length);
stream_free(s);
@ -817,7 +814,6 @@ static int ospf_router_info_lsa_originate_as(void *arg)
struct ospf_lsa *new;
struct ospf *top;
int rc = -1;
vrf_id_t vrf_id = VRF_DEFAULT;
/* Sanity Check */
if (OspfRI.scope == OSPF_OPAQUE_AREA_LSA) {
@ -830,13 +826,12 @@ static int ospf_router_info_lsa_originate_as(void *arg)
/* Create new Opaque-LSA/ROUTER INFORMATION instance. */
new = ospf_router_info_lsa_new(NULL);
new->vrf_id = VRF_DEFAULT;
top = (struct ospf *)arg;
/* Check ospf info */
if (top == NULL) {
zlog_debug("RI (%s): ospf instance not found for vrf id %u",
__func__, vrf_id);
__func__, VRF_DEFAULT);
ospf_lsa_unlock(&new);
return rc;
}
@ -874,7 +869,6 @@ static int ospf_router_info_lsa_originate_area(void *arg)
struct ospf *top;
struct ospf_ri_area_info *ai = NULL;
int rc = -1;
vrf_id_t vrf_id = VRF_DEFAULT;
/* Sanity Check */
if (OspfRI.scope == OSPF_OPAQUE_AS_LSA) {
@ -893,19 +887,18 @@ static int ospf_router_info_lsa_originate_area(void *arg)
__func__);
return rc;
}
if (ai->area->ospf) {
vrf_id = ai->area->ospf->vrf_id;
if (ai->area->ospf)
top = ai->area->ospf;
} else {
top = ospf_lookup_by_vrf_id(vrf_id);
}
else
top = ospf_lookup_by_vrf_id(VRF_DEFAULT);
new = ospf_router_info_lsa_new(ai->area);
new->vrf_id = vrf_id;
/* Check ospf info */
if (top == NULL) {
zlog_debug("RI (%s): ospf instance not found for vrf id %u",
__func__, vrf_id);
__func__, VRF_DEFAULT);
ospf_lsa_unlock(&new);
return rc;
}
@ -1039,10 +1032,9 @@ static struct ospf_lsa *ospf_router_info_lsa_refresh(struct ospf_lsa *lsa)
/* Create new Opaque-LSA/ROUTER INFORMATION instance. */
new = ospf_router_info_lsa_new(ai->area);
new->data->ls_seqnum = lsa_seqnum_increment(lsa);
new->vrf_id = lsa->vrf_id;
/* Install this LSA into LSDB. */
/* Given "lsa" will be freed in the next function. */
top = ospf_lookup_by_vrf_id(lsa->vrf_id);
top = ospf_lookup_by_vrf_id(VRF_DEFAULT);
if (ospf_lsa_install(top, NULL /*oi */, new) == NULL) {
flog_warn(EC_OSPF_LSA_INSTALL_FAILURE,
"RI (%s): ospf_lsa_install() ?", __func__);
@ -1062,10 +1054,9 @@ static struct ospf_lsa *ospf_router_info_lsa_refresh(struct ospf_lsa *lsa)
/* Create new Opaque-LSA/ROUTER INFORMATION instance. */
new = ospf_router_info_lsa_new(NULL);
new->data->ls_seqnum = lsa_seqnum_increment(lsa);
new->vrf_id = lsa->vrf_id;
/* Install this LSA into LSDB. */
/* Given "lsa" will be freed in the next function. */
top = ospf_lookup_by_vrf_id(lsa->vrf_id);
top = ospf_lookup_by_vrf_id(VRF_DEFAULT);
if (ospf_lsa_install(top, NULL /*oi */, new) == NULL) {
flog_warn(EC_OSPF_LSA_INSTALL_FAILURE,
"RI (%s): ospf_lsa_install() ?", __func__);
@ -1676,10 +1667,18 @@ DEFUN (router_info,
{
int idx_mode = 1;
uint8_t scope;
VTY_DECLVAR_INSTANCE_CONTEXT(ospf, ospf);
if (OspfRI.enabled)
return CMD_SUCCESS;
/* Check that the OSPF is using default VRF */
if (ospf->vrf_id != VRF_DEFAULT) {
vty_out(vty,
"Router Information is only supported in default VRF\n");
return CMD_WARNING_CONFIG_FAILED;
}
/* Check and get Area value if present */
if (strncmp(argv[idx_mode]->arg, "as", 2) == 0)
scope = OSPF_OPAQUE_AS_LSA;

49
ospfd/ospf_te.c
View File

@ -1207,10 +1207,9 @@ static struct ospf_lsa *ospf_mpls_te_lsa_new(struct ospf *ospf,
/* Now, create an OSPF LSA instance. */
new = ospf_lsa_new_and_data(length);
new->vrf_id = ospf->vrf_id;
if (area && area->ospf)
new->vrf_id = area->ospf->vrf_id;
new->area = area;
new->vrf_id = VRF_DEFAULT;
SET_FLAG(new->flags, OSPF_LSA_SELF);
memcpy(new->data, lsah, length);
stream_free(s);
@ -1329,7 +1328,6 @@ static int ospf_mpls_te_lsa_originate2(struct ospf *top,
__func__);
return rc;
}
new->vrf_id = top->vrf_id;
/* Install this LSA into LSDB. */
if (ospf_lsa_install(top, NULL /*oi */, new) == NULL) {
@ -1482,7 +1480,7 @@ static struct ospf_lsa *ospf_mpls_te_lsa_refresh(struct ospf_lsa *lsa)
ospf_opaque_lsa_flush_schedule(lsa);
return NULL;
}
top = ospf_lookup_by_vrf_id(lsa->vrf_id);
top = ospf_lookup_by_vrf_id(VRF_DEFAULT);
/* Create new Opaque-LSA/MPLS-TE instance. */
new = ospf_mpls_te_lsa_new(top, area, lp);
if (new == NULL) {
@ -3847,6 +3845,12 @@ DEFUN (ospf_mpls_te_on,
if (OspfMplsTE.enabled)
return CMD_SUCCESS;
/* Check that the OSPF is using default VRF */
if (ospf->vrf_id != VRF_DEFAULT) {
vty_out(vty, "MPLS TE is only supported in default VRF\n");
return CMD_WARNING_CONFIG_FAILED;
}
ote_debug("MPLS-TE: OFF -> ON");
OspfMplsTE.enabled = true;
@ -4229,12 +4233,10 @@ static void show_mpls_te_link_sub(struct vty *vty, struct interface *ifp)
DEFUN (show_ip_ospf_mpls_te_link,
show_ip_ospf_mpls_te_link_cmd,
"show ip ospf [vrf <NAME|all>] mpls-te interface [INTERFACE]",
"show ip ospf mpls-te interface [INTERFACE]",
SHOW_STR
IP_STR
OSPF_STR
VRF_CMD_HELP_STR
"All VRFs\n"
"MPLS-TE information\n"
"Interface information\n"
"Interface name\n")
@ -4242,43 +4244,18 @@ DEFUN (show_ip_ospf_mpls_te_link,
struct vrf *vrf;
int idx_interface = 0;
struct interface *ifp = NULL;
struct listnode *node;
char *vrf_name = NULL;
bool all_vrf = false;
int inst = 0;
int idx_vrf = 0;
struct ospf *ospf = NULL;
if (argv_find(argv, argc, "vrf", &idx_vrf)) {
vrf_name = argv[idx_vrf + 1]->arg;
all_vrf = strmatch(vrf_name, "all");
}
argv_find(argv, argc, "INTERFACE", &idx_interface);
/* vrf input is provided could be all or specific vrf*/
if (vrf_name) {
if (all_vrf) {
for (ALL_LIST_ELEMENTS_RO(om->ospf, node, ospf)) {
if (!ospf->oi_running)
continue;
vrf = vrf_lookup_by_id(ospf->vrf_id);
FOR_ALL_INTERFACES (vrf, ifp)
show_mpls_te_link_sub(vty, ifp);
}
return CMD_SUCCESS;
}
ospf = ospf_lookup_by_inst_name(inst, vrf_name);
} else
ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT);
ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT);
if (ospf == NULL || !ospf->oi_running)
return CMD_SUCCESS;
vrf = vrf_lookup_by_id(ospf->vrf_id);
vrf = vrf_lookup_by_id(VRF_DEFAULT);
if (!vrf)
return CMD_SUCCESS;
if (idx_interface) {
ifp = if_lookup_by_name(
argv[idx_interface]->arg,
ospf->vrf_id);
ifp = if_lookup_by_name(argv[idx_interface]->arg, VRF_DEFAULT);
if (ifp == NULL) {
vty_out(vty, "No such interface name in vrf %s\n",
vrf->name);