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-rw-r--r--hicn-plugin/src/hicn_buffer.h136
1 files changed, 136 insertions, 0 deletions
diff --git a/hicn-plugin/src/hicn_buffer.h b/hicn-plugin/src/hicn_buffer.h
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+++ b/hicn-plugin/src/hicn_buffer.h
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+/*
+ * Copyright (c) 2017-2019 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.
+ */
+
+#ifndef __HICN_BUFFER_H__
+#define __HICN_BUFFER_H__
+
+#define ip_address_t hicn_ip_address_t
+#define ip_address_cmp hicn_ip_address_cmp
+#define ip_prefix_t hicn_ip_prefix_t
+#define ip_prefix_cmp hicn_ip_prefix_cmp
+#undef ip_prefix_len
+#define ip_prefix_len hicn_ip_prefix_len
+#include <hicn/hicn.h>
+#undef ip_address_t
+#undef ip_address_cmp
+#undef ip_prefix_t
+#undef ip_prefix_cmp
+#undef ip_prefix_len
+#define ip_prefix_len(_a) (_a)->len
+
+#include <netinet/in.h>
+#include <vnet/ip/ip.h>
+#include <vnet/tcp/tcp_packet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/buffer.h>
+
+/**
+ * @file
+ */
+
+/* Helper for avoiding warnings about type-punning */
+#define UNION_CAST(x, destType) \
+ (((union {__typeof__(x) a; destType b;})x).b)
+
+/*
+ * Update CMakeLists.txt as we have to manually replace the type for
+ * vppapigen
+ */
+typedef u8 weight_t;
+typedef index_t hicn_face_id_t;
+
+#define ISV6(isv6, dov6, dov4) isv6 ? dov6 : dov4
+#define HICN_IS_NAMEHASH_CACHED(b) (((u64)(b->opaque2)[0] != 0) || ((u64)(b->opaque2)[1] != 0))
+
+#ifndef VLIB_BUFFER_MIN_CHAIN_SEG_SIZE
+#define VLIB_BUFFER_MIN_CHAIN_SEG_SIZE (128)
+#endif
+
+#define HICN_BUFFER_FLAGS_DEFAULT 0x0
+/* vlib_buffer cloning utilities impose that current_lentgh is more that 2*CLIB_CACHE_LINE_BYTES. */
+#define foreach_hicn_buffer_flags \
+ _(FACE_IS_APP, "Packet belong to application face") \
+ _(PKT_LESS_TWO_CL, "Packets lenght is less that 2 * CLIB_CACHE_LINE_BYTES.") \
+ _(IS_INTEREST, "Packet is interest") \
+ _(FLUSH, "Packet must be flush to next node. Used by host stack") \
+ _(IS_IP4, "Packet is IP4") \
+ _(FROM_UDP4_TUNNEL, "Interest comes from UDP4 tunnel") \
+ _(FROM_UDP6_TUNNEL, "Interest comes from UDP6 tunnel") \
+
+typedef enum _hicn_buffer_options
+{
+#define _(sym, str) HICN_BUFFER_##sym,
+ foreach_hicn_buffer_flags
+#undef _
+} hicn_buffer_options_t;
+
+typedef enum _hicn_buffer_flags
+{
+#define _(sym, str) HICN_BUFFER_FLAGS_##sym = 1 << HICN_BUFFER_##sym,
+ foreach_hicn_buffer_flags
+#undef _
+} hicn_buffer_flags_t;
+
+/* The following is stored in the opaque2 field in the vlib_buffer_t */
+typedef struct
+{
+ /* hash of the name */
+ u64 name_hash;
+
+ /* ids to prefetch a PIT/CS entry */
+ u32 node_id;
+ u32 bucket_id;
+ u8 hash_entry_id;
+ u8 hash_bucket_flags;
+
+ u8 flags;
+ u8 dpo_ctx_id; /* used for data path */
+ u8 vft_id; /* " */
+
+ hicn_face_id_t face_id; /* ingress iface, sizeof(u32) */
+ u32 in_faces_vec_id; /* vector of possible input face for a data packet */
+
+ u32 ctx_index; /* Host stack context index */
+ u32 seq_number; /* Reassembly information */
+
+ hicn_type_t type;
+} hicn_buffer_t;
+
+STATIC_ASSERT (sizeof (hicn_buffer_t) <=
+ STRUCT_SIZE_OF (vlib_buffer_t, opaque2),
+ "hICN buffer opaque2 meta-data too large for vlib_buffer");
+
+
+always_inline hicn_buffer_t *
+hicn_get_buffer (vlib_buffer_t * b0)
+{
+ return (hicn_buffer_t *) & (b0->opaque2[0]);
+}
+
+always_inline u8
+hicn_is_v6 (hicn_header_t * pkt_hdr)
+{
+ return ((pkt_hdr->v4.ip.version_ihl >> 4) != 4);
+}
+
+#endif /* __HICN_BUFFER_H__ */
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables: eval: (c-set-style "gnu") End:
+ */