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path: root/src/plugins/dhcp/dhcp6_proxy_node.c
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Diffstat (limited to 'src/plugins/dhcp/dhcp6_proxy_node.c')
-rw-r--r--src/plugins/dhcp/dhcp6_proxy_node.c35
1 files changed, 28 insertions, 7 deletions
diff --git a/src/plugins/dhcp/dhcp6_proxy_node.c b/src/plugins/dhcp/dhcp6_proxy_node.c
index 95e5c9272f5..3231f28b1fd 100644
--- a/src/plugins/dhcp/dhcp6_proxy_node.c
+++ b/src/plugins/dhcp/dhcp6_proxy_node.c
@@ -595,6 +595,8 @@ dhcpv6_proxy_to_client_input (vlib_main_t * vm,
u32 sw_if_index = ~0;
u32 original_sw_if_index = ~0;
vnet_sw_interface_t *si0;
+ u32 inner_vlan = (u32) ~ 0;
+ u32 outer_vlan = (u32) ~ 0;
u32 error0 = (u32) ~ 0;
vnet_sw_interface_t *swif;
dhcpv6_option_t *r0 = 0, *o;
@@ -765,7 +767,19 @@ dhcpv6_proxy_to_client_input (vlib_main_t * vm,
vlib_buffer_advance (b0, -(sizeof (ethernet_header_t)));
si0 = vnet_get_sw_interface (vnm, original_sw_if_index);
if (si0->type == VNET_SW_INTERFACE_TYPE_SUB)
- vlib_buffer_advance (b0, -4 /* space for VLAN tag */ );
+ {
+ if (si0->sub.eth.flags.one_tag == 1)
+ {
+ vlib_buffer_advance (b0, -4 /* space for 1 VLAN tag */ );
+ outer_vlan = (si0->sub.eth.outer_vlan_id << 16) | 0x86dd;
+ }
+ else if (si0->sub.eth.flags.two_tags == 1)
+ {
+ vlib_buffer_advance (b0, -8 /* space for 2 VLAN tag */ );
+ outer_vlan = (si0->sub.eth.outer_vlan_id << 16) | 0x8100;
+ inner_vlan = (si0->sub.eth.inner_vlan_id << 16) | 0x86dd;
+ }
+ }
mac0 = vlib_buffer_get_current (b0);
@@ -773,15 +787,22 @@ dhcpv6_proxy_to_client_input (vlib_main_t * vm,
ei0 = pool_elt_at_index (em->interfaces, hi0->hw_instance);
clib_memcpy (mac0->src_address, ei0->address, sizeof (ei0->address));
clib_memset (&mac0->dst_address, 0xff, sizeof (mac0->dst_address));
- mac0->type = (si0->type == VNET_SW_INTERFACE_TYPE_SUB) ?
- clib_net_to_host_u16 (0x8100) : clib_net_to_host_u16 (0x86dd);
- if (si0->type == VNET_SW_INTERFACE_TYPE_SUB)
+ if (si0->type == VNET_SW_INTERFACE_TYPE_SUB && outer_vlan != (u32) ~ 0)
{
+ mac0->type = (si0->sub.eth.flags.dot1ad == 1) ?
+ clib_net_to_host_u16 (0x88a8) : clib_net_to_host_u16 (0x8100);
u32 *vlan_tag = (u32 *) (mac0 + 1);
- u32 tmp;
- tmp = (si0->sub.id << 16) | 0x0800;
- *vlan_tag = clib_host_to_net_u32 (tmp);
+ *vlan_tag = clib_host_to_net_u32 (outer_vlan);
+ if (inner_vlan != (u32) ~ 0)
+ {
+ u32 *inner_vlan_tag = (u32 *) (vlan_tag + 1);
+ *inner_vlan_tag = clib_host_to_net_u32 (inner_vlan);
+ }
+ }
+ else
+ {
+ mac0->type = clib_net_to_host_u16 (0x86dd);
}
/* $$$ consider adding a dynamic next to the graph node, for performance */