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_RAW) 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 #define VECTOR_WRITE (1 < 1) 72 #define VECTOR_HEADERS (1 < 2) 73 74 extern struct arglist *uml_parse_vector_ifspec(char *arg); 75 76 extern struct vector_fds *uml_vector_user_open( 77 int unit, 78 struct arglist *parsed 79 ); 80 81 extern char *uml_vector_fetch_arg( 82 struct arglist *ifspec, 83 char *token 84 ); 85 86 extern int uml_vector_recvmsg(int fd, void *hdr, int flags); 87 extern int uml_vector_sendmsg(int fd, void *hdr, int flags); 88 extern int uml_vector_writev(int fd, void *hdr, int iovcount); 89 extern int uml_vector_sendmmsg( 90 int fd, void *msgvec, 91 unsigned int vlen, 92 unsigned int flags 93 ); 94 extern int uml_vector_recvmmsg( 95 int fd, 96 void *msgvec, 97 unsigned int vlen, 98 unsigned int flags 99 ); 100 extern void *uml_vector_default_bpf(void *mac); 101 extern void *uml_vector_user_bpf(char *filename); 102 extern int uml_vector_attach_bpf(int fd, void *bpf); 103 extern int uml_vector_detach_bpf(int fd, void *bpf); 104 extern bool uml_raw_enable_qdisc_bypass(int fd); 105 extern bool uml_raw_enable_vnet_headers(int fd); 106 extern bool uml_tap_enable_vnet_headers(int fd); 107 108 109 #endif 110