dpdk: add support for outer udp and ipv4 checksums

[vpp.git] / src / plugins / dpdk / device / device.c

diff --git a/src/plugins/dpdk/device/device.c b/src/plugins/dpdk/device/device.c
index 7c083e1..095036f 100644 (file)
--- a/src/plugins/dpdk/device/device.c
+++ b/src/plugins/dpdk/device/device.c
@@ -221,7 +221,8 @@ dpdk_buffer_tx_offload (dpdk_device_t * xd, vlib_buffer_t * b,
 {
   int is_ip4 = b->flags & VNET_BUFFER_F_IS_IP4;
   u32 tso = b->flags & VNET_BUFFER_F_GSO, max_pkt_len;
-  u32 ip_cksum, tcp_cksum, udp_cksum;
+  u32 ip_cksum, tcp_cksum, udp_cksum, outer_hdr_len = 0;
+  u32 outer_ip_cksum, vxlan_tunnel;
   u64 ol_flags;
   vnet_buffer_oflags_t oflags = 0;
 
@@ -233,23 +234,46 @@ dpdk_buffer_tx_offload (dpdk_device_t * xd, vlib_buffer_t * b,
   ip_cksum = oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM;
   tcp_cksum = oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM;
   udp_cksum = oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM;
+  outer_ip_cksum = oflags & VNET_BUFFER_OFFLOAD_F_OUTER_IP_CKSUM;
+  vxlan_tunnel = oflags & VNET_BUFFER_OFFLOAD_F_TNL_VXLAN;
 
-  mb->l2_len = vnet_buffer (b)->l3_hdr_offset - b->current_data;
-  mb->l3_len = vnet_buffer (b)->l4_hdr_offset -
-    vnet_buffer (b)->l3_hdr_offset;
-  mb->outer_l3_len = 0;
-  mb->outer_l2_len = 0;
   ol_flags = is_ip4 ? PKT_TX_IPV4 : PKT_TX_IPV6;
   ol_flags |= ip_cksum ? PKT_TX_IP_CKSUM : 0;
   ol_flags |= tcp_cksum ? PKT_TX_TCP_CKSUM : 0;
   ol_flags |= udp_cksum ? PKT_TX_UDP_CKSUM : 0;
 
+  if (vxlan_tunnel)
+    {
+      ol_flags |= outer_ip_cksum ? PKT_TX_OUTER_IPV4 | PKT_TX_OUTER_IP_CKSUM :
+                                  PKT_TX_OUTER_IPV6;
+      ol_flags |= PKT_TX_TUNNEL_VXLAN;
+      mb->l2_len =
+       vnet_buffer (b)->l3_hdr_offset - vnet_buffer2 (b)->outer_l4_hdr_offset;
+      mb->l3_len =
+       vnet_buffer (b)->l4_hdr_offset - vnet_buffer (b)->l3_hdr_offset;
+      mb->outer_l2_len =
+       vnet_buffer2 (b)->outer_l3_hdr_offset - b->current_data;
+      mb->outer_l3_len = vnet_buffer2 (b)->outer_l4_hdr_offset -
+                        vnet_buffer2 (b)->outer_l3_hdr_offset;
+      outer_hdr_len = mb->outer_l2_len + mb->outer_l3_len;
+    }
+  else
+    {
+      mb->l2_len =
+       vnet_buffer (b)->l3_hdr_offset - vnet_buffer (b)->l2_hdr_offset;
+      mb->l3_len =
+       vnet_buffer (b)->l4_hdr_offset - vnet_buffer (b)->l3_hdr_offset;
+      mb->outer_l2_len = 0;
+      mb->outer_l3_len = 0;
+    }
+
   if (tso)
     {
       mb->l4_len = vnet_buffer2 (b)->gso_l4_hdr_sz;
       mb->tso_segsz = vnet_buffer2 (b)->gso_size;
       /* ensure packet is large enough to require tso */
-      max_pkt_len = mb->l2_len + mb->l3_len + mb->l4_len + mb->tso_segsz;
+      max_pkt_len =
+       outer_hdr_len + mb->l2_len + mb->l3_len + mb->l4_len + mb->tso_segsz;
       if (mb->tso_segsz != 0 && mb->pkt_len > max_pkt_len)
        ol_flags |= (tcp_cksum ? PKT_TX_TCP_SEG : PKT_TX_UDP_SEG);
     }