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zebra: reset LSP backup nh info on update

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If an existing LSP nh is updated, ensure any backup nh
info is also reset.

Signed-off-by: Mark Stapp <mjs@voltanet.io>
This commit is contained in:
Mark Stapp 2020-08-04 12:46:26 -04:00
parent 774daaed3f
commit 301a687af6
1 changed files with 5 additions and 1 deletions
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6
zebra/zebra_mpls.c
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@ -3321,7 +3321,7 @@ lsp_add_nhlfe(zebra_lsp_t *lsp, enum lsp_types_t type,
/*
* Install an LSP and forwarding entry; used primarily
* from zapi message processing.
* from vrf zapi message processing.
*/
int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type,
mpls_label_t in_label, uint8_t num_out_labels,
@ -3381,6 +3381,10 @@ static int lsp_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type,
memcpy(nhlfe->nexthop->backup_idx, znh->backup_idx,
znh->backup_num);
SET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
} else {
/* Ensure there's no stale backup info */
UNSET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP);
nhlfe->nexthop->backup_num = 0;
}
/* Queue LSP for processing. */