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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:
*/
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