1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/*-
* BSD LICENSE
*
* Copyright 2016 6WIND S.A.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _RTE_NET_PTYPE_H_
#define _RTE_NET_PTYPE_H_
#ifdef __cplusplus
extern "C" {
#endif
/**
* Structure containing header lengths associated to a packet, filled
* by rte_net_get_ptype().
*/
struct rte_net_hdr_lens {
uint8_t l2_len;
uint8_t l3_len;
uint8_t l4_len;
uint8_t tunnel_len;
uint8_t inner_l2_len;
uint8_t inner_l3_len;
uint8_t inner_l4_len;
};
/**
* Parse an Ethernet packet to get its packet type.
*
* This function parses the network headers in mbuf data and return its
* packet type.
*
* If it is provided by the user, it also fills a rte_net_hdr_lens
* structure that contains the lengths of the parsed network
* headers. Each length field is valid only if the associated packet
* type is set. For instance, hdr_lens->l2_len is valid only if
* (retval & RTE_PTYPE_L2_MASK) != RTE_PTYPE_UNKNOWN.
*
* Supported packet types are:
* L2: Ether, Vlan, QinQ
* L3: IPv4, IPv6
* L4: TCP, UDP, SCTP
* Tunnels: IPv4, IPv6, Gre, Nvgre
*
* @param m
* The packet mbuf to be parsed.
* @param hdr_lens
* A pointer to a structure where the header lengths will be returned,
* or NULL.
* @param layers
* List of layers to parse. The function will stop at the first
* empty layer. Examples:
* - To parse all known layers, use RTE_PTYPE_ALL_MASK.
* - To parse only L2 and L3, use RTE_PTYPE_L2_MASK | RTE_PTYPE_L3_MASK
* @return
* The packet type of the packet.
*/
uint32_t rte_net_get_ptype(const struct rte_mbuf *m,
struct rte_net_hdr_lens *hdr_lens, uint32_t layers);
#ifdef __cplusplus
}
#endif
#endif /* _RTE_NET_PTYPE_H_ */
|
