From ebc403dda50fda7735526798b13a35900f593b5c Mon Sep 17 00:00:00 2001 From: Stephen Worley Date: Tue, 14 May 2019 10:21:19 -0700 Subject: [PATCH] lib: Add nexthop labels cmp functions Add a function to compare nexthop labels. Signed-off-by: Stephen Worley --- lib/nexthop.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/lib/nexthop.c b/lib/nexthop.c index 2a65c4d54..c616ea857 100644 --- a/lib/nexthop.c +++ b/lib/nexthop.c @@ -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; -- 2.39.2