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lib: Add nexthop labels cmp functions

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Add a function to compare nexthop labels.

Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
This commit is contained in:
Stephen Worley 2019-05-14 10:21:19 -07:00
parent 776c3e90c1
commit ebc403dda5
1 changed files with 28 additions and 0 deletions
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28
lib/nexthop.c
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@ -36,6 +36,34 @@
DEFINE_MTYPE_STATIC(LIB, NEXTHOP, "Nexthop")
DEFINE_MTYPE_STATIC(LIB, NH_LABEL, "Nexthop label")
static int nexthop_labels_cmp(const struct nexthop *nh1,
const struct nexthop *nh2)
{
const struct mpls_label_stack *nhl1 = NULL;
const struct mpls_label_stack *nhl2 = NULL;
nhl1 = nh1->nh_label;
nhl2 = nh2->nh_label;
/* No labels is a match */
if (!nhl1 && !nhl2)
return 0;
if (nhl1 && !nhl2)
return 1;
if (nhl2 && !nhl1)
return -1;
if (nhl1->num_labels > nhl2->num_labels)
return 1;
if (nhl1->num_labels < nhl2->num_labels)
return -1;
return memcmp(nhl1->label, nhl2->label, nhl1->num_labels);
}
int nexthop_cmp(const struct nexthop *next1, const struct nexthop *next2)
{
int ret;