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authorKlement Sekera <ksekera@cisco.com>2016-12-12 08:36:58 +0100
committerOle Trøan <otroan@employees.org>2016-12-16 08:09:40 +0000
commit9225dee9655ce607130f9bab5472441b72e25858 (patch)
tree6438ea39bf2b14eeca70770890165497ee146d30 /vpp-api/java/m4/ax_java_options.m4
parentcc53285baf2c3a45b95e22dd66c8592d634568ee (diff)
make test: improve robustness and performance
Introduce an API which asserts empty capture for interface. Throw exception in old API if the capture does not exist, thus making it clear if the test expects packets to arrive or not. Improve performance by not doing sleeps after starting the packet generator, rather lazily deleting captures when needed. Fix wrong usage of packet.show() in various tests. Change-Id: I456cb23316eef99b3f35f80344fe595c4db9a21c Signed-off-by: Klement Sekera <ksekera@cisco.com>
Diffstat (limited to 'vpp-api/java/m4/ax_java_options.m4')
0 files changed, 0 insertions, 0 deletions
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/*
 * 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.
 */
#ifndef included_nsh_packet_h
#define included_nsh_packet_h

/*
 * NSH packet format from draft-quinn-sfc-nsh-03.txt
 *
 * NSH Base Header
 *  0                   1                   2                   3
 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *  |Ver|O|C|    TTL    |   Length  |    MD Type    | Next Protocol |
 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * 
 * 
 * Base Header Field Descriptions:
 * 
 * Version: The version field is used to ensure backward compatibility
 * going forward with future NSH updates.
 * 
 * O bit: Indicates that this packet is an operations and management
 * (OAM) packet.  SFF and SFs nodes MUST examine the payload and take
 * appropriate action (e.g. return status information).
 * 
 * OAM message specifics and handling details are outside the scope of
 * this document.
 * 
 * C bit: Indicates that a critical metadata TLV is present (see section
 * 7).  This bit acts as an indication for hardware implementers to
 * decide how to handle the presence of a critical TLV without
 * necessarily needing to parse all TLVs present.  The C bit MUST be set
 * to 1 if one or more critical TLVs are present.
 * 
 * All other flag fields are reserved.
 * 
 * Length: total length, in 4 byte words, of the NSH header, including
 * optional variable TLVs.  Length must be equal or greater than 6.
 * 
 * MD Type: indicates the format of NSH beyond the base header and the
 * type of metadata being carried.  This typing is used to describe the
 * use for the metadata.  A new registry will be requested from IANA for
 * the MD Type.  NSH defines one type, type = 0x1 which indicates that
 * the format of the header is as per this draft.
 * 
 * The format of the base header is invariant, and not described by MD
 * Type.
 * 
 * Next Protocol: indicates the protocol type of the original packet.  A
 * new IANA registry will be created for protocol type.
 * 
 * This draft defines the following Next Protocol values:
 * 
 * 0x1 : IPv4
 * 0x2 : IPv6
 * 0x3 : Ethernet
 */

typedef CLIB_PACKED(struct {
  u8 ver_o_c; //TTL: high 4 bit
  u8 length;  //TTL: low 2 bit
  u8 md_type;
  u8 next_protocol;
  u32 nsp_nsi; // nsp 24 bits, nsi 8 bits
}) nsh_base_header_t;

typedef CLIB_PACKED(struct {
  /* Context headers, always present */
  u32 c1;
  u32 c2;
  u32 c3;
  u32 c4;
}) nsh_md1_data_t;

typedef CLIB_PACKED(struct {
  u16 class;
  u8 type;
  u8 length;
}) nsh_tlv_header_t;

typedef nsh_tlv_header_t nsh_md2_data_t;

typedef CLIB_PACKED(struct {
  nsh_base_header_t nsh_base;
  union {
     nsh_md1_data_t md1_data;
     nsh_md2_data_t md2_data;
   } md;
}) nsh_header_t;

#define NSH_VERSION (0<<6)
#define NSH_O_BIT (1<<5)
#define NSH_C_BIT (1<<4)

#define NSH_TTL_H4_MASK 0xF
#define NSH_TTL_L2_MASK 0xC0
#define NSH_LEN_MASK 0x3F

/* Network byte order shift / mask */
#define NSH_NSI_MASK 0xFF
#define NSH_NSP_MASK (0x00FFFFFF)
#define NSH_NSP_SHIFT 8

#endif /* included_nsh_packet_h */