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 (int fd); |
104 | extern bool (int fd); |
105 | |
106 | |
107 | #endif |
108 | |