Reorganize source tree to use single autotools instance

Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 180 insertions, 0 deletions

diff --git a/src/vnet/ip/ip_packet.h b/src/vnet/ip/ip_packet.h
new file mode 100644
index 00000000000..d3f3de771bc
--- /dev/null
+++ b/src/vnet/ip/ip_packet.h
@@ -0,0 +1,180 @@
+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ * ip/ip_packet.h: packet format common between ip4 & ip6
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef included_ip_packet_h
+#define included_ip_packet_h
+
+#include <vppinfra/byte_order.h>
+#include <vppinfra/error.h>
+
+typedef enum ip_protocol
+{
+#define ip_protocol(n,s) IP_PROTOCOL_##s = n,
+#include "protocols.def"
+#undef ip_protocol
+} ip_protocol_t;
+
+/* TCP/UDP ports. */
+typedef enum
+{
+#define ip_port(s,n) IP_PORT_##s = n,
+#include "ports.def"
+#undef ip_port
+} ip_port_t;
+
+/* Classifies protocols into UDP, ICMP or other. */
+typedef enum
+{
+  IP_BUILTIN_PROTOCOL_UDP,
+  IP_BUILTIN_PROTOCOL_ICMP,
+  IP_BUILTIN_PROTOCOL_UNKNOWN,
+} ip_builtin_protocol_t;
+
+#define foreach_ip_builtin_multicast_group	\
+  _ (1, all_hosts_on_subnet)			\
+  _ (2, all_routers_on_subnet)			\
+  _ (4, dvmrp)					\
+  _ (5, ospf_all_routers)			\
+  _ (6, ospf_designated_routers)		\
+  _ (13, pim)					\
+  _ (18, vrrp)					\
+  _ (102, hsrp)					\
+  _ (22, igmp_v3)
+
+typedef enum
+{
+#define _(n,f) IP_MULTICAST_GROUP_##f = n,
+  foreach_ip_builtin_multicast_group
+#undef _
+} ip_multicast_group_t;
+
+/* IP checksum support. */
+
+/* Incremental checksum update. */
+typedef uword ip_csum_t;
+
+always_inline ip_csum_t
+ip_csum_with_carry (ip_csum_t sum, ip_csum_t x)
+{
+  ip_csum_t t = sum + x;
+  return t + (t < x);
+}
+
+/* Update checksum changing field at even byte offset from x -> 0. */
+always_inline ip_csum_t
+ip_csum_add_even (ip_csum_t c, ip_csum_t x)
+{
+  ip_csum_t d;
+
+  d = c - x;
+
+  /* Fold in carry from high bit. */
+  d -= d > c;
+
+  ASSERT (ip_csum_with_carry (d, x) == c);
+
+  return d;
+}
+
+/* Update checksum changing field at even byte offset from 0 -> x. */
+always_inline ip_csum_t
+ip_csum_sub_even (ip_csum_t c, ip_csum_t x)
+{
+  return ip_csum_with_carry (c, x);
+}
+
+always_inline ip_csum_t
+ip_csum_update_inline (ip_csum_t sum, ip_csum_t old, ip_csum_t new,
+		       u32 field_byte_offset, u32 field_n_bytes)
+{
+  /* For even 1-byte fields on big-endian and odd 1-byte fields on little endian
+     we need to shift byte into place for checksum. */
+  if ((field_n_bytes % 2)
+      && (field_byte_offset % 2) == CLIB_ARCH_IS_LITTLE_ENDIAN)
+    {
+      old = old << 8;
+      new = new << 8;
+    }
+  sum = ip_csum_sub_even (sum, old);
+  sum = ip_csum_add_even (sum, new);
+  return sum;
+}
+
+#define ip_csum_update(sum,old,new,type,field)			\
+  ip_csum_update_inline ((sum), (old), (new),			\
+			 STRUCT_OFFSET_OF (type, field),	\
+			 STRUCT_SIZE_OF (type, field))
+
+always_inline u16
+ip_csum_fold (ip_csum_t c)
+{
+  /* Reduce to 16 bits. */
+#if uword_bits == 64
+  c = (c & (ip_csum_t) 0xffffffff) + (c >> (ip_csum_t) 32);
+  c = (c & 0xffff) + (c >> 16);
+#endif
+
+  c = (c & 0xffff) + (c >> 16);
+  c = (c & 0xffff) + (c >> 16);
+
+  return c;
+}
+
+/* Copy data and checksum at the same time. */
+ip_csum_t ip_csum_and_memcpy (ip_csum_t sum, void *dst, void *src,
+			      uword n_bytes);
+
+always_inline u16
+ip_csum_and_memcpy_fold (ip_csum_t sum, void *dst)
+{
+  return ip_csum_fold (sum);
+}
+
+/* Checksum routine. */
+ip_csum_t ip_incremental_checksum (ip_csum_t sum, void *data, uword n_bytes);
+
+#endif /* included_ip_packet_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */