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zebra: include backup lsp nhlfes in 'active' check

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Check backup nhlfes/nexthops for 'active' status when checking
an LSP. Also tweak the show command output for backup nhlfes
slightly.

Signed-off-by: Mark Stapp <mjs@voltanet.io>
This commit is contained in:
Mark Stapp 2020-06-03 17:01:19 -04:00
parent cc1b974668
commit 5e29e1a10f
1 changed files with 15 additions and 4 deletions
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19
zebra/zebra_mpls.c
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@ -804,8 +804,7 @@ static void lsp_select_best_nhlfe(zebra_lsp_t *lsp)
/*
* First compute the best path, after checking nexthop status. We are
* only
* concerned with non-deleted NHLFEs.
* only concerned with non-deleted NHLFEs.
*/
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
/* Clear selection flags. */
@ -823,6 +822,14 @@ static void lsp_select_best_nhlfe(zebra_lsp_t *lsp)
if (!lsp->best_nhlfe)
return;
/*
* Check the active status of backup nhlfes also
*/
frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) {
if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED))
(void)nhlfe_nexthop_active(nhlfe);
}
/* Mark best NHLFE as selected. */
SET_FLAG(lsp->best_nhlfe->flags, NHLFE_FLAG_SELECTED);
@ -917,9 +924,9 @@ static wq_item_status lsp_process(struct work_queue *wq, void *data)
if (IS_ZEBRA_DEBUG_MPLS) {
if (oldbest)
nhlfe2str(oldbest, buf, BUFSIZ);
nhlfe2str(oldbest, buf, sizeof(buf));
if (newbest)
nhlfe2str(newbest, buf2, BUFSIZ);
nhlfe2str(newbest, buf2, sizeof(buf2));
zlog_debug(
"Process LSP in-label %u oldbest %s newbest %s "
"flags 0x%x ecmp# %d",
@ -1573,6 +1580,9 @@ static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty)
default:
break;
}
vty_out(vty, "%s",
CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP) ? " (backup)"
: "");
vty_out(vty, "%s",
CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)"
: "");
@ -1600,6 +1610,7 @@ static void lsp_print(struct vty *vty, zebra_lsp_t *lsp)
/* Find backup in backup list */
i = 0;
backup = NULL;
frr_each(nhlfe_list, &lsp->backup_nhlfe_list, backup) {
if (i == nhlfe->nexthop->backup_idx)
break;