summaryrefslogtreecommitdiffstats
path: root/src/vnet/ip/ip6_hop_by_hop.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/vnet/ip/ip6_hop_by_hop.h')
-rw-r--r--src/vnet/ip/ip6_hop_by_hop.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/src/vnet/ip/ip6_hop_by_hop.h b/src/vnet/ip/ip6_hop_by_hop.h
index 9574f0a5ecc..5f12f647dba 100644
--- a/src/vnet/ip/ip6_hop_by_hop.h
+++ b/src/vnet/ip/ip6_hop_by_hop.h
@@ -230,6 +230,42 @@ ioam_flow_add (u8 encap, u8 * flow_name)
return (index);
}
+always_inline ip6_hop_by_hop_option_t *
+ip6_hbh_get_option (ip6_hop_by_hop_header_t * hbh0, u8 option_to_search)
+{
+ ip6_hop_by_hop_option_t *opt0, *limit0;
+ u8 type0;
+
+ if (!hbh0)
+ return NULL;
+
+ opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
+ limit0 = (ip6_hop_by_hop_option_t *)
+ ((u8 *) hbh0 + ((hbh0->length + 1) << 3));
+
+ /* Scan the set of h-b-h options, process ones that we understand */
+ while (opt0 < limit0)
+ {
+ type0 = opt0->type;
+ switch (type0)
+ {
+ case 0: /* Pad1 */
+ opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0) + 1;
+ continue;
+ case 1: /* PadN */
+ break;
+ default:
+ if (type0 == option_to_search)
+ return opt0;
+ break;
+ }
+ opt0 =
+ (ip6_hop_by_hop_option_t *) (((u8 *) opt0) + opt0->length +
+ sizeof (ip6_hop_by_hop_option_t));
+ }
+ return NULL;
+}
+
#endif /* __included_ip6_hop_by_hop_ioam_h__ */
/*