FD.io VPP  v16.06
Vector Packet Processing
spp_ctx.h
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1 /*
2  *------------------------------------------------------------------
3  * spp_ctx.h - packet / context definitions
4  *
5  * Copyright (c) 2007-2014 Cisco and/or its affiliates.
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at:
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  *------------------------------------------------------------------
18  */
19 
20 #ifndef __SPP_CTX_H__
21 #define __SPP_CTX_H__
22 
23 /* Packet header / data */
24 
25 /* Any change to spp_ctx_t structure should be updated in vnet/buffer.h
26  * as well.
27  */
28 typedef struct _spp_ctx {
29 #ifdef TOBE_PORTED
30  /* Following fields are required to handle multibuffer */
31  u32 num_buffers; /* Number of buffers part of packet */
32  vlib_buffer_t *next_ctx_this_packet;
33 
34  /* Following is used by non-UDP protocols */
35 #define SPP_CTX_FEATURE_DATA_SIZE 16
36 
37  u8 feature_data[SPP_CTX_FEATURE_DATA_SIZE];
38 #endif
39 
40  union { /* Roddick specific */
41  u32 roddick_info;
42  struct __tx_pkt_info { /* Used by PI to PI communication for TX */
43  u32 uidb_index:16; /* uidb_index to transmit */
44  u32 packet_type:2; /* 1-IPv4, 2-Ipv6, - 0,3 - Unused */
45  u32 ipv4_defrag:1; /* 0 - Normal, 1 - update first
46  * segment size
47  * (set by 6rd defrag node)
48  */
49 
50  u32 dst_ip_port_idx:4;/* Index to dst_ip_port_table */
51  u32 from_node:4;
52  u32 calc_chksum:1;
53  u32 reserved:4;
54  } tx;
55  struct __rx_pkt_info { /* Used by PD / PI communication */
56  u32 uidb_index:16; /* uidb_index received in packet */
57  u32 packet_type:2; /* 1-IPv4, 2-Ipv6, - 0,3 - Unused */
58  u32 icmp_type:1; /* 0-ICMP query type, 1-ICMP error type */
59  u32 protocol_type:2; /* 1-TCP, 2-UDP, 3-ICMP, 0 - Unused */
60  u32 ipv4_defrag:1; /* 0 - Normal, 1 - update first
61  * segment size
62  * (set by 6rd defrag node)
63  */
64 
65  u32 direction:1; /* 0-Outside, 1-Inside */
66  u32 frag:1; /*IP fragment-1, Otherwise-0*/
67  u32 option:1; /* 0-No IP option (v4) present, non-fragHdr
68  * option hdr present (v6)
69  */
70  u32 df_bit:1; /* IPv4 DF bit copied here */
71  u32 reserved1:6;
72  } rx;
73  } ru;
74 } spp_ctx_t;
75 
76 #endif
unsigned int u32
Definition: types.h:88
unsigned char u8
Definition: types.h:56
struct _spp_ctx spp_ctx_t