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Merge pull request #7322 from Orange-OpenSource/ospf-sr

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ospfd: Store neighbor Adjacency SID in SR database
This commit is contained in:
Donald Sharp 2020-10-17 13:17:50 -04:00 committed by GitHub
commit 2d9b665e54
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2 changed files with 23 additions and 19 deletions
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40
ospfd/ospf_sr.c
View File

@ -1046,6 +1046,7 @@ static void update_ext_link_sid(struct sr_node *srn, struct sr_link *srl,
struct listnode *node;
struct sr_link *lk;
bool found = false;
bool config = true;
/* Sanity check */
if ((srn == NULL) || (srl == NULL))
@ -1053,11 +1054,11 @@ static void update_ext_link_sid(struct sr_node *srn, struct sr_link *srl,
osr_debug(" |- Process Extended Link Adj/Lan-SID");
/* Skip Local Adj/Lan_Adj SID coming from neighbors */
/* Detect if Adj/Lan_Adj SID must be configured */
if (!CHECK_FLAG(lsa_flags, OSPF_LSA_SELF)
&& (CHECK_FLAG(srl->flags[0], EXT_SUBTLV_LINK_ADJ_SID_LFLG)
|| CHECK_FLAG(srl->flags[1], EXT_SUBTLV_LINK_ADJ_SID_LFLG)))
return;
config = false;
/* Search for existing Segment Link */
for (ALL_LIST_ELEMENTS_RO(srn->ext_link, node, lk))
@ -1077,28 +1078,31 @@ static void update_ext_link_sid(struct sr_node *srn, struct sr_link *srl,
IPV4_ADDR_COPY(&srl->adv_router, &srn->adv_router);
listnode_add(srn->ext_link, srl);
/* Try to set MPLS table */
if (compute_link_nhlfe(srl)) {
if (config && compute_link_nhlfe(srl)) {
add_adj_sid(srl->nhlfe[0]);
add_adj_sid(srl->nhlfe[1]);
}
} else {
/* Update SR-Link if they are different */
if (sr_link_cmp(lk, srl)) {
if (compute_link_nhlfe(srl)) {
update_adj_sid(lk->nhlfe[0], srl->nhlfe[0]);
update_adj_sid(lk->nhlfe[1], srl->nhlfe[1]);
/* Replace Segment List */
listnode_delete(srn->ext_link, lk);
XFREE(MTYPE_OSPF_SR_PARAMS, lk);
srl->srn = srn;
IPV4_ADDR_COPY(&srl->adv_router,
&srn->adv_router);
listnode_add(srn->ext_link, srl);
} else {
/* New NHLFE was not found.
* Just free the SR Link
*/
XFREE(MTYPE_OSPF_SR_PARAMS, srl);
/* Try to set MPLS table */
if (config) {
if (compute_link_nhlfe(srl)) {
update_adj_sid(lk->nhlfe[0],
srl->nhlfe[0]);
update_adj_sid(lk->nhlfe[1],
srl->nhlfe[1]);
} else {
del_adj_sid(lk->nhlfe[0]);
del_adj_sid(lk->nhlfe[1]);
}
}
/* Replace SR-Link in SR-Node Adjacency List */
listnode_delete(srn->ext_link, lk);
XFREE(MTYPE_OSPF_SR_PARAMS, lk);
srl->srn = srn;
IPV4_ADDR_COPY(&srl->adv_router, &srn->adv_router);
listnode_add(srn->ext_link, srl);
} else {
/*
* This is just an LSA refresh.

2
ospfd/ospf_sr.h
View File

@ -269,7 +269,7 @@ struct sr_node {
/* List of Prefix & Link advertise by this node */
struct list *ext_prefix; /* For Node SID */
struct list *ext_link; /* For Adj and LAN SID */
struct list *ext_link; /* For Adjacency SID */
/* Pointer to FRR SR-Node or NULL if it is not a neighbor */
struct sr_node *neighbor;