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zebra: Apply label to all nexthops when needed

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The application of a label to a route entry needs to
look at all non-recursive nexthops to be attached to
instead of just the first one.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2018-03-16 10:46:28 -04:00
parent 46fe6fd557
commit 8f77d0ee6c
1 changed files with 27 additions and 11 deletions
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38
zebra/zebra_mpls.c
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@ -2254,6 +2254,19 @@ void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf,
fec_print(rn->info, vty);
}
static bool mpls_ftn_update_nexthop(int add, struct nexthop *nexthop,
enum lsp_types_t type, mpls_label_t label)
{
if (add && nexthop->nh_label_type == ZEBRA_LSP_NONE)
nexthop_add_labels(nexthop, type, 1, &label);
else if (!add && nexthop->nh_label_type == type)
nexthop_del_labels(nexthop);
else
return false;
return true;
}
/*
* Install/uninstall a FEC-To-NHLFE (FTN) binding.
*/
@ -2266,6 +2279,7 @@ int mpls_ftn_update(int add, struct zebra_vrf *zvrf, enum lsp_types_t type,
struct route_node *rn;
struct route_entry *re;
struct nexthop *nexthop;
bool found;
/* Lookup table. */
table = zebra_vrf_table(family2afi(prefix->family), SAFI_UNICAST,
@ -2285,6 +2299,7 @@ int mpls_ftn_update(int add, struct zebra_vrf *zvrf, enum lsp_types_t type,
if (re == NULL)
return -1;
found = false;
for (nexthop = re->ng.nexthop; nexthop; nexthop = nexthop->next) {
switch (nexthop->type) {
case NEXTHOP_TYPE_IPV4:
@ -2297,7 +2312,11 @@ int mpls_ftn_update(int add, struct zebra_vrf *zvrf, enum lsp_types_t type,
if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX
&& nexthop->ifindex != ifindex)
continue;
goto found;
if (!mpls_ftn_update_nexthop(add, nexthop, type,
out_label))
return 0;
found = true;
break;
case NEXTHOP_TYPE_IPV6:
case NEXTHOP_TYPE_IPV6_IFINDEX:
if (gtype != NEXTHOP_TYPE_IPV6
@ -2308,21 +2327,18 @@ int mpls_ftn_update(int add, struct zebra_vrf *zvrf, enum lsp_types_t type,
if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX
&& nexthop->ifindex != ifindex)
continue;
goto found;
if (!mpls_ftn_update_nexthop(add, nexthop, type,
out_label))
return 0;
found = true;
break;
default:
break;
}
}
/* nexthop not found */
return -1;
found:
if (add && nexthop->nh_label_type == ZEBRA_LSP_NONE)
nexthop_add_labels(nexthop, type, 1, &out_label);
else if (!add && nexthop->nh_label_type == type)
nexthop_del_labels(nexthop);
else
return 0;
if (!found)
return -1;
SET_FLAG(re->status, ROUTE_ENTRY_CHANGED);
SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED);