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Diffstat (limited to 'hicn-plugin/src/hicn_buffer.h')
| -rw-r--r-- | hicn-plugin/src/hicn_buffer.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/hicn-plugin/src/hicn_buffer.h b/hicn-plugin/src/hicn_buffer.h new file mode 100644 index 000000000..3eb2a0530 --- /dev/null +++ b/hicn-plugin/src/hicn_buffer.h @@ -0,0 +1,136 @@ +/* + * 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: + */ |