Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/um/drivers/vector_user.h
26424 views
1
/* SPDX-License-Identifier: GPL-2.0 */

2
/*

3
 * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)

4
 */

5


6
#ifndef __UM_VECTOR_USER_H

7
#define __UM_VECTOR_USER_H

8


9
#define MAXVARGS	20

10


11
#define TOKEN_IFNAME "ifname"

12


13
#define TRANS_RAW "raw"

14
#define TRANS_RAW_LEN strlen(TRANS_RAW)

15


16
#define TRANS_TAP "tap"

17
#define TRANS_TAP_LEN strlen(TRANS_TAP)

18


19
#define TRANS_GRE "gre"

20
#define TRANS_GRE_LEN strlen(TRANS_GRE)

21


22
#define TRANS_L2TPV3 "l2tpv3"

23
#define TRANS_L2TPV3_LEN strlen(TRANS_L2TPV3)

24


25
#define TRANS_HYBRID "hybrid"

26
#define TRANS_HYBRID_LEN strlen(TRANS_HYBRID)

27


28
#define TRANS_BESS "bess"

29
#define TRANS_BESS_LEN strlen(TRANS_BESS)

30


31
#define DEFAULT_BPF_LEN 6

32


33
#ifndef IPPROTO_GRE

34
#define IPPROTO_GRE 0x2F

35
#endif

36


37
#define GRE_MODE_CHECKSUM	cpu_to_be16(8 << 12)	/* checksum */

38
#define GRE_MODE_RESERVED	cpu_to_be16(4 << 12)	/* unused */

39
#define GRE_MODE_KEY		cpu_to_be16(2 << 12)	/* KEY present */

40
#define GRE_MODE_SEQUENCE	cpu_to_be16(1 << 12)	/* sequence */

41


42
#define GRE_IRB cpu_to_be16(0x6558)

43


44
#define L2TPV3_DATA_PACKET 0x30000

45


46
/* IANA-assigned IP protocol ID for L2TPv3 */

47


48
#ifndef IPPROTO_L2TP

49
#define IPPROTO_L2TP 0x73

50
#endif

51


52
struct arglist {

53
	int	numargs;

54
	char	*tokens[MAXVARGS];

55
	char	*values[MAXVARGS];

56
};

57


58
/* Separating read and write FDs allows us to have different

59
 * rx and tx method. Example - read tap via raw socket using

60
 * recvmmsg, write using legacy tap write calls

61
 */

62


63
struct vector_fds {

64
	int rx_fd;

65
	int tx_fd;

66
	void *remote_addr;

67
	int remote_addr_size;

68
};

69


70
#define VECTOR_READ	1

71


72
extern struct arglist *uml_parse_vector_ifspec(char *arg);

73


74
extern struct vector_fds *uml_vector_user_open(

75
	int unit,

76
	struct arglist *parsed

77
);

78


79
extern char *uml_vector_fetch_arg(

80
	struct arglist *ifspec,

81
	char *token

82
);

83


84
extern int uml_vector_recvmsg(int fd, void *hdr, int flags);

85
extern int uml_vector_sendmsg(int fd, void *hdr, int flags);

86
extern int uml_vector_writev(int fd, void *hdr, int iovcount);

87
extern int uml_vector_sendmmsg(

88
	int fd, void *msgvec,

89
	unsigned int vlen,

90
	unsigned int flags

91
);

92
extern int uml_vector_recvmmsg(

93
	int fd,

94
	void *msgvec,

95
	unsigned int vlen,

96
	unsigned int flags

97
);

98
extern void *uml_vector_default_bpf(const void *mac);

99
extern void *uml_vector_user_bpf(char *filename);

100
extern int uml_vector_attach_bpf(int fd, void *bpf);

101
extern int uml_vector_detach_bpf(int fd, void *bpf);

102
extern bool uml_raw_enable_qdisc_bypass(int fd);

103
extern bool uml_raw_enable_vnet_headers(int fd);

104
extern bool uml_tap_enable_vnet_headers(int fd);

105


106


107
#endif

108


109