1 files changed, 23 insertions, 0 deletions
diff --git a/app/src/mrb.c b/app/src/mrb.c
index 3377a8e..757fd5a 100644
--- a/app/src/mrb.c
+++ b/app/src/mrb.c
@@ -778,6 +778,29 @@ int marsio_buff_set_metadata(marsio_buff_t * m, enum mr_buff_metadata_type type,
 
     switch (type)
     {
+    case MR_BUFF_METADATA_VLAN_TCI:
+        if (unlikely(sz_data < sizeof(uint16_t)))
+        {
+            return -ENOMEM;
+        }
+
+        /* we do not want to relay on the hardware offload capability */
+        struct rte_ether_hdr * ether_hdr = (struct rte_ether_hdr *)rte_pktmbuf_mtod(mbuf, struct rte_ether_hdr *);
+
+        /* already has a vlan header */
+        if (ether_hdr->ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_VLAN))
+        {
+            struct rte_vlan_hdr * vlan_hdr = (struct rte_vlan_hdr *)(ether_hdr + 1);
+            vlan_hdr->vlan_tci = rte_cpu_to_be_16(*(uint16_t *)data);
+        }
+        else
+        {
+            mbuf->vlan_tci = *(uint16_t *)data;
+            rte_vlan_insert(&mbuf);
+        }
+
+        return 0;
+
     case MR_BUFF_ROUTE_CTX: {
         struct mrb_metadata_route_ctx * route_ctx = (struct mrb_metadata_route_ctx *)data;
         assert(route_ctx != NULL);