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-rw-r--r--src/vnet/pg/input.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/vnet/pg/input.c b/src/vnet/pg/input.c
index 757a2916640..bb760b09b26 100644
--- a/src/vnet/pg/input.c
+++ b/src/vnet/pg/input.c
@@ -1541,6 +1541,20 @@ fill_gso_buffer_flags (vlib_main_t * vm, u32 * buffers, u32 n_buffers,
u16 ethertype = clib_net_to_host_u16 (eh->type);
u16 l2hdr_sz = sizeof (ethernet_header_t);
+ if (ethernet_frame_is_tagged (ethertype))
+ {
+ ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (eh + 1);
+
+ ethertype = clib_net_to_host_u16 (vlan->type);
+ l2hdr_sz += sizeof (*vlan);
+ if (ethertype == ETHERNET_TYPE_VLAN)
+ {
+ vlan++;
+ ethertype = clib_net_to_host_u16 (vlan->type);
+ l2hdr_sz += sizeof (*vlan);
+ }
+ }
+
vnet_buffer (b0)->l2_hdr_offset = 0;
vnet_buffer (b0)->l3_hdr_offset = l2hdr_sz;
if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP4))