VPP-598: tcp stack initial commit

Change-Id: I49e5ce0aae6e4ff634024387ceaf7dbc432a0351
Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: Florin Coras <fcoras@cisco.com>

2 files changed, 5 insertions, 105 deletions

diff --git a/src/vnet/lisp-cp/packets.c b/src/vnet/lisp-cp/packets.c
index 3a4f421b02a..f24024f1500 100644
--- a/src/vnet/lisp-cp/packets.c
+++ b/src/vnet/lisp-cp/packets.c
@@ -15,7 +15,7 @@
 
 #include <vnet/lisp-cp/packets.h>
 #include <vnet/lisp-cp/lisp_cp_messages.h>
-#include <vnet/ip/udp_packet.h>
+#include <vnet/udp/udp_packet.h>
 
 /* Returns IP ID for the packet */
 /* static u16 ip_id = 0;
@@ -142,61 +142,6 @@ pkt_push_udp (vlib_main_t * vm, vlib_buffer_t * b, u16 sp, u16 dp)
 }
 
 void *
-pkt_push_ipv4 (vlib_main_t * vm, vlib_buffer_t * b, ip4_address_t * src,
-	       ip4_address_t * dst, int proto)
-{
-  ip4_header_t *ih;
-
-  /* make some room */
-  ih = vlib_buffer_push_uninit (b, sizeof (ip4_header_t));
-
-  ih->ip_version_and_header_length = 0x45;
-  ih->tos = 0;
-  ih->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b));
-
-  /* iph->fragment_id = clib_host_to_net_u16(get_IP_ID ()); */
-
-  /* TODO: decide if we allow fragments in case of control */
-  ih->flags_and_fragment_offset = clib_host_to_net_u16 (IP_DF);
-  ih->ttl = 255;
-  ih->protocol = proto;
-  ih->src_address.as_u32 = src->as_u32;
-  ih->dst_address.as_u32 = dst->as_u32;
-
-  ih->checksum = ip4_header_checksum (ih);
-  return ih;
-}
-
-void *
-pkt_push_ipv6 (vlib_main_t * vm, vlib_buffer_t * b, ip6_address_t * src,
-	       ip6_address_t * dst, int proto)
-{
-  ip6_header_t *ip6h;
-  u16 payload_length;
-
-  /* make some room */
-  ip6h = vlib_buffer_push_uninit (b, sizeof (ip6_header_t));
-
-  ip6h->ip_version_traffic_class_and_flow_label =
-    clib_host_to_net_u32 (0x6 << 28);
-
-  /* calculate ip6 payload length */
-  payload_length = vlib_buffer_length_in_chain (vm, b);
-  payload_length -= sizeof (*ip6h);
-
-  ip6h->payload_length = clib_host_to_net_u16 (payload_length);
-
-  ip6h->hop_limit = 0xff;
-  ip6h->protocol = proto;
-  clib_memcpy (ip6h->src_address.as_u8, src->as_u8,
-	       sizeof (ip6h->src_address));
-  clib_memcpy (ip6h->dst_address.as_u8, dst->as_u8,
-	       sizeof (ip6h->src_address));
-
-  return ip6h;
-}
-
-void *
 pkt_push_ip (vlib_main_t * vm, vlib_buffer_t * b, ip_address_t * src,
 	     ip_address_t * dst, u32 proto)
 {
@@ -210,12 +155,12 @@ pkt_push_ip (vlib_main_t * vm, vlib_buffer_t * b, ip_address_t * src,
   switch (ip_addr_version (src))
     {
     case IP4:
-      return pkt_push_ipv4 (vm, b, &ip_addr_v4 (src), &ip_addr_v4 (dst),
-			    proto);
+      return vlib_buffer_push_ip4 (vm, b, &ip_addr_v4 (src),
+				   &ip_addr_v4 (dst), proto);
       break;
     case IP6:
-      return pkt_push_ipv6 (vm, b, &ip_addr_v6 (src), &ip_addr_v6 (dst),
-			    proto);
+      return vlib_buffer_push_ip6 (vm, b, &ip_addr_v6 (src),
+				   &ip_addr_v6 (dst), proto);
       break;
     }
 
diff --git a/src/vnet/lisp-cp/packets.h b/src/vnet/lisp-cp/packets.h
index 212a1d78163..f6da3bf4b87 100644
--- a/src/vnet/lisp-cp/packets.h
+++ b/src/vnet/lisp-cp/packets.h
@@ -26,51 +26,6 @@ void *pkt_push_udp_and_ip (vlib_main_t * vm, vlib_buffer_t * b, u16 sp,
 
 void *pkt_push_ecm_hdr (vlib_buffer_t * b);
 
-always_inline u8 *
-vlib_buffer_get_tail (vlib_buffer_t * b)
-{
-  return b->data + b->current_data + b->current_length;
-}
-
-always_inline void *
-vlib_buffer_put_uninit (vlib_buffer_t * b, u8 size)
-{
-  /* XXX should make sure there's enough space! */
-  void *p = vlib_buffer_get_tail (b);
-  b->current_length += size;
-  return p;
-}
-
-always_inline void *
-vlib_buffer_push_uninit (vlib_buffer_t * b, u8 size)
-{
-  /* XXX should make sure there's enough space! */
-  ASSERT (b->current_data >= size);
-  b->current_data -= size;
-  b->current_length += size;
-
-  return vlib_buffer_get_current (b);
-}
-
-always_inline void *
-vlib_buffer_make_headroom (vlib_buffer_t * b, u8 size)
-{
-  /* XXX should make sure there's enough space! */
-  b->current_data += size;
-  return vlib_buffer_get_current (b);
-}
-
-always_inline void *
-vlib_buffer_pull (vlib_buffer_t * b, u8 size)
-{
-  if (b->current_length < size)
-    return 0;
-
-  void *data = vlib_buffer_get_current (b);
-  vlib_buffer_advance (b, size);
-  return data;
-}
-
 /* *INDENT-ON* */
 
 /*