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ospfd: api: fix recovery of LSA after restart of api client
Prior to this fix, restarting the client just failed b/c the code tried to "refresh" the existing LSA being added, except that code checked for meta-data to exist, which was deleted when the client disconnected previously (or had never connected and the LSA state was picked up from the network). Signed-off-by: Christian Hopps <chopps@labn.net>
This commit is contained in:
Christian Hopps
parent
d86760acad
commit
5349121b4c
@ -1627,9 +1627,9 @@ int ospf_apiserver_handle_originate_request(struct ospf_apiserver *apiserv,
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/* Determine if LSA is new or an update for an existing one. */
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old = ospf_lsdb_lookup(lsdb, new);
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if (!old) {
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if (!old || !ospf_opaque_is_owned(old)) {
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/* New LSA install in LSDB. */
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rc = ospf_apiserver_originate1(new);
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rc = ospf_apiserver_originate1(new, old);
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} else {
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/*
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* Keep the new LSA instance in the "waiting place" until the
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@ -1696,17 +1696,33 @@ void ospf_apiserver_flood_opaque_lsa(struct ospf_lsa *lsa)
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}
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}
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int ospf_apiserver_originate1(struct ospf_lsa *lsa)
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int ospf_apiserver_originate1(struct ospf_lsa *lsa, struct ospf_lsa *old)
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{
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struct ospf *ospf;
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ospf = ospf_lookup_by_vrf_id(VRF_DEFAULT);
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assert(ospf);
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if (old) {
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/*
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* An old LSA exists that we didn't originate it in this
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* session. Dump it, but increment past it's seqnum.
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*/
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assert(!ospf_opaque_is_owned(old));
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if (IS_LSA_MAX_SEQ(old)) {
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flog_warn(
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EC_OSPF_LSA_INSTALL_FAILURE,
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"ospf_apiserver_originate1: old LSA at maxseq");
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return -1;
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}
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lsa->data->ls_seqnum = lsa_seqnum_increment(old);
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ospf_discard_from_db(ospf, old->lsdb, old);
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}
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/* Install this LSA into LSDB. */
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if (ospf_lsa_install(ospf, lsa->oi, lsa) == NULL) {
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flog_warn(EC_OSPF_LSA_INSTALL_FAILURE,
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"ospf_apiserver_originate1: ospf_lsa_install failed");
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"%s: ospf_lsa_install failed", __func__);
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return -1;
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}
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@ -174,7 +174,8 @@ extern struct ospf_interface *
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ospf_apiserver_if_lookup_by_addr(struct in_addr address);
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extern struct ospf_interface *
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ospf_apiserver_if_lookup_by_ifp(struct interface *ifp);
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extern int ospf_apiserver_originate1(struct ospf_lsa *lsa);
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extern int ospf_apiserver_originate1(struct ospf_lsa *lsa,
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struct ospf_lsa *old);
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extern void ospf_apiserver_flood_opaque_lsa(struct ospf_lsa *lsa);
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@ -74,9 +74,8 @@ int ospf_apiserver_enable;
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static void ospf_opaque_register_vty(void);
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static void ospf_opaque_funclist_init(void);
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static void ospf_opaque_funclist_term(void);
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static void free_opaque_info_per_type(void *val);
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static void free_opaque_info_per_type_del(void *val);
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static void free_opaque_info_per_id(void *val);
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static void free_opaque_info_owner(void *val);
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static int ospf_opaque_lsa_install_hook(struct ospf_lsa *lsa);
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static int ospf_opaque_lsa_delete_hook(struct ospf_lsa *lsa);
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@ -141,7 +140,7 @@ int ospf_opaque_type9_lsa_init(struct ospf_interface *oi)
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list_delete(&oi->opaque_lsa_self);
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oi->opaque_lsa_self = list_new();
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oi->opaque_lsa_self->del = free_opaque_info_per_type;
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oi->opaque_lsa_self->del = free_opaque_info_per_type_del;
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oi->t_opaque_lsa_self = NULL;
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return 0;
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}
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@ -161,7 +160,7 @@ int ospf_opaque_type10_lsa_init(struct ospf_area *area)
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list_delete(&area->opaque_lsa_self);
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area->opaque_lsa_self = list_new();
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area->opaque_lsa_self->del = free_opaque_info_per_type;
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area->opaque_lsa_self->del = free_opaque_info_per_type_del;
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area->t_opaque_lsa_self = NULL;
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#ifdef MONITOR_LSDB_CHANGE
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@ -189,7 +188,7 @@ int ospf_opaque_type11_lsa_init(struct ospf *top)
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list_delete(&top->opaque_lsa_self);
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top->opaque_lsa_self = list_new();
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top->opaque_lsa_self->del = free_opaque_info_per_type;
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top->opaque_lsa_self->del = free_opaque_info_per_type_del;
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top->t_opaque_lsa_self = NULL;
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#ifdef MONITOR_LSDB_CHANGE
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@ -263,6 +262,9 @@ static const char *ospf_opaque_type_name(uint8_t opaque_type)
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struct opaque_info_per_type; /* Forward declaration. */
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static void free_opaque_info_per_type(struct opaque_info_per_type *oipt,
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bool cleanup_owner);
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struct ospf_opaque_functab {
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uint8_t opaque_type;
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struct opaque_info_per_type *oipt;
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@ -433,12 +435,9 @@ void ospf_delete_opaque_functab(uint8_t lsa_type, uint8_t opaque_type)
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if (functab->opaque_type == opaque_type) {
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/* Cleanup internal control information, if it
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* still remains. */
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if (functab->oipt != NULL) {
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free_opaque_info_owner(functab->oipt);
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free_opaque_info_per_type(
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functab->oipt);
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}
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if (functab->oipt != NULL)
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free_opaque_info_per_type(functab->oipt,
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true);
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/* Dequeue listnode entry from the list. */
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listnode_delete(funclist, functab);
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@ -558,8 +557,7 @@ register_opaque_info_per_type(struct ospf_opaque_functab *functab,
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case OSPF_OPAQUE_AS_LSA:
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top = ospf_lookup_by_vrf_id(new->vrf_id);
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if (new->area != NULL && (top = new->area->ospf) == NULL) {
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free_opaque_info_owner(oipt);
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free_opaque_info_per_type(oipt);
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free_opaque_info_per_type(oipt, true);
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oipt = NULL;
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goto out; /* This case may not exist. */
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}
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@ -571,8 +569,7 @@ register_opaque_info_per_type(struct ospf_opaque_functab *functab,
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EC_OSPF_LSA_UNEXPECTED,
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"register_opaque_info_per_type: Unexpected LSA-type(%u)",
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new->data->type);
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free_opaque_info_owner(oipt);
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free_opaque_info_per_type(oipt);
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free_opaque_info_per_type(oipt, true);
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oipt = NULL;
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goto out; /* This case may not exist. */
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}
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@ -589,42 +586,13 @@ out:
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return oipt;
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}
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/* Remove "oipt" from its owner's self-originated LSA list. */
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static void free_opaque_info_owner(void *val)
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static void free_opaque_info_per_type(struct opaque_info_per_type *oipt,
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bool cleanup_owner)
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{
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struct opaque_info_per_type *oipt = (struct opaque_info_per_type *)val;
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switch (oipt->lsa_type) {
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case OSPF_OPAQUE_LINK_LSA: {
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struct ospf_interface *oi =
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(struct ospf_interface *)(oipt->owner);
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listnode_delete(oi->opaque_lsa_self, oipt);
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break;
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}
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case OSPF_OPAQUE_AREA_LSA: {
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struct ospf_area *area = (struct ospf_area *)(oipt->owner);
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listnode_delete(area->opaque_lsa_self, oipt);
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break;
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}
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case OSPF_OPAQUE_AS_LSA: {
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struct ospf *top = (struct ospf *)(oipt->owner);
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listnode_delete(top->opaque_lsa_self, oipt);
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break;
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}
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default:
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flog_warn(EC_OSPF_LSA_UNEXPECTED,
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"free_opaque_info_owner: Unexpected LSA-type(%u)",
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oipt->lsa_type);
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break; /* This case may not exist. */
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}
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}
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static void free_opaque_info_per_type(void *val)
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{
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struct opaque_info_per_type *oipt = (struct opaque_info_per_type *)val;
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struct opaque_info_per_id *oipi;
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struct ospf_lsa *lsa;
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struct listnode *node, *nnode;
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struct list *l;
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/* Control information per opaque-id may still exist. */
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for (ALL_LIST_ELEMENTS(oipt->id_list, node, nnode, oipi)) {
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@ -637,10 +605,37 @@ static void free_opaque_info_per_type(void *val)
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OSPF_TIMER_OFF(oipt->t_opaque_lsa_self);
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list_delete(&oipt->id_list);
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if (cleanup_owner) {
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/* Remove from its owner's self-originated LSA list. */
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switch (oipt->lsa_type) {
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case OSPF_OPAQUE_LINK_LSA:
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l = ((struct ospf_interface *)oipt->owner)
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->opaque_lsa_self;
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break;
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case OSPF_OPAQUE_AREA_LSA:
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l = ((struct ospf_area *)oipt->owner)->opaque_lsa_self;
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break;
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case OSPF_OPAQUE_AS_LSA:
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l = ((struct ospf *)oipt->owner)->opaque_lsa_self;
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break;
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default:
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flog_warn(
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EC_OSPF_LSA_UNEXPECTED,
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"free_opaque_info_owner: Unexpected LSA-type(%u)",
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oipt->lsa_type);
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return;
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}
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listnode_delete(l, oipt);
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}
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XFREE(MTYPE_OPAQUE_INFO_PER_TYPE, oipt);
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return;
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}
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static void free_opaque_info_per_type_del(void *val)
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{
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free_opaque_info_per_type((struct opaque_info_per_type *)val, false);
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}
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static struct opaque_info_per_type *
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lookup_opaque_info_by_type(struct ospf_lsa *lsa)
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{
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@ -758,6 +753,13 @@ out:
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return oipi;
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}
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int ospf_opaque_is_owned(struct ospf_lsa *lsa)
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{
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struct opaque_info_per_type *oipt = lookup_opaque_info_by_type(lsa);
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return (oipt != NULL && lookup_opaque_info_by_id(oipt, lsa) != NULL);
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}
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/*------------------------------------------------------------------------*
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* Following are (vty) configuration functions for Opaque-LSAs handling.
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*------------------------------------------------------------------------*/
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@ -173,4 +173,6 @@ extern void ospf_opaque_self_originated_lsa_received(struct ospf_neighbor *nbr,
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struct ospf_lsa *lsa);
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extern struct ospf *oi_to_top(struct ospf_interface *oi);
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extern int ospf_opaque_is_owned(struct ospf_lsa *lsa);
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#endif /* _ZEBRA_OSPF_OPAQUE_H */
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