vcl: enable gso for 'sendmsg' in LDP mode.

Some upon apps(e.g. Nginx-quic) package it's several protocol buffers into a struct msg
which is a combination of gso_buffer and gso_size.
but if HostStack regardless the gso_size to the buffer and split the buffer with default mss,
that cause peer client failed on parsing the package.

Type: improvement
Signed-off-by: Dou Chao <chao.dou@intel.com>
Change-Id: I805eb642be826038ba96d1b85dad8ec0c0f6c459
Signed-off-by: Dou Chao <chao.dou@intel.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/vcl/vppcom.h b/src/vcl/vppcom.h
index 08724cc31d8..c9f7b8b9403 100644
--- a/src/vcl/vppcom.h
+++ b/src/vcl/vppcom.h
@@ -63,6 +63,23 @@ extern "C"
     VPPCOM_IS_IP4,
   } vppcom_is_ip4_t;
 
+#define VCL_UDP_OPTS_BASE (VPPCOM_PROTO_UDP << 16)
+#define VCL_UDP_SEGMENT	  (VCL_UDP_OPTS_BASE + 0)
+
+  typedef struct vppcom_endpt_tlv_t_
+  {
+    uint32_t data_type;
+    uint32_t data_len;
+    union
+    {
+      /* data */
+      uint64_t value;
+      uint32_t as_u32[2];
+      uint16_t as_u16[4];
+      uint8_t as_u8[8];
+    };
+  } vppcom_endpt_tlv_t;
+
   typedef struct vppcom_endpt_t_
   {
     uint8_t is_cut_thru;
@@ -70,6 +87,7 @@ extern "C"
     uint8_t *ip;
     uint16_t port;
     uint64_t parent_handle;
+    vppcom_endpt_tlv_t app_data;
   } vppcom_endpt_t;
 
 typedef uint32_t vcl_session_handle_t;