DPDK  17.11.10
rte_gre.h
1 /*-
2  * BSD LICENSE
3  *
4  * Copyright 2016 6WIND S.A.
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11  * notice, this list of conditions and the following disclaimer.
12  * * Redistributions in binary form must reproduce the above copyright
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21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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31  */
32 
33 #ifndef _RTE_GRE_H_
34 #define _RTE_GRE_H_
35 
36 #include <stdint.h>
37 #include <rte_byteorder.h>
38 
39 #ifdef __cplusplus
40 extern "C" {
41 #endif
42 
46 __extension__
47 struct gre_hdr {
48 #if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
49  uint16_t res2:4;
50  uint16_t s:1;
51  uint16_t k:1;
52  uint16_t res1:1;
53  uint16_t c:1;
54  uint16_t ver:3;
55  uint16_t res3:5;
56 #elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
57  uint16_t c:1;
58  uint16_t res1:1;
59  uint16_t k:1;
60  uint16_t s:1;
61  uint16_t res2:4;
62  uint16_t res3:5;
63  uint16_t ver:3;
64 #endif
65  uint16_t proto;
66 } __attribute__((__packed__));
67 
68 #ifdef __cplusplus
69 }
70 #endif
71 
72 #endif /* RTE_GRE_H_ */
uint16_t proto
Definition: rte_gre.h:65
uint16_t res1
Definition: rte_gre.h:52
uint16_t res2
Definition: rte_gre.h:49
uint16_t c
Definition: rte_gre.h:53
uint16_t s
Definition: rte_gre.h:50
uint16_t ver
Definition: rte_gre.h:54
uint16_t res3
Definition: rte_gre.h:55
uint16_t k
Definition: rte_gre.h:51