1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #ifndef __UM_VECTOR_USER_H 7*4882a593Smuzhiyun #define __UM_VECTOR_USER_H 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #define MAXVARGS 20 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #define TOKEN_IFNAME "ifname" 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #define TRANS_RAW "raw" 14*4882a593Smuzhiyun #define TRANS_RAW_LEN strlen(TRANS_RAW) 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #define TRANS_TAP "tap" 17*4882a593Smuzhiyun #define TRANS_TAP_LEN strlen(TRANS_TAP) 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun #define TRANS_GRE "gre" 20*4882a593Smuzhiyun #define TRANS_GRE_LEN strlen(TRANS_GRE) 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #define TRANS_L2TPV3 "l2tpv3" 23*4882a593Smuzhiyun #define TRANS_L2TPV3_LEN strlen(TRANS_L2TPV3) 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun #define TRANS_HYBRID "hybrid" 26*4882a593Smuzhiyun #define TRANS_HYBRID_LEN strlen(TRANS_HYBRID) 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun #define TRANS_BESS "bess" 29*4882a593Smuzhiyun #define TRANS_BESS_LEN strlen(TRANS_BESS) 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun #define DEFAULT_BPF_LEN 6 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun #ifndef IPPROTO_GRE 34*4882a593Smuzhiyun #define IPPROTO_GRE 0x2F 35*4882a593Smuzhiyun #endif 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun #define GRE_MODE_CHECKSUM cpu_to_be16(8 << 12) /* checksum */ 38*4882a593Smuzhiyun #define GRE_MODE_RESERVED cpu_to_be16(4 << 12) /* unused */ 39*4882a593Smuzhiyun #define GRE_MODE_KEY cpu_to_be16(2 << 12) /* KEY present */ 40*4882a593Smuzhiyun #define GRE_MODE_SEQUENCE cpu_to_be16(1 << 12) /* sequence */ 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun #define GRE_IRB cpu_to_be16(0x6558) 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun #define L2TPV3_DATA_PACKET 0x30000 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun /* IANA-assigned IP protocol ID for L2TPv3 */ 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun #ifndef IPPROTO_L2TP 49*4882a593Smuzhiyun #define IPPROTO_L2TP 0x73 50*4882a593Smuzhiyun #endif 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun struct arglist { 53*4882a593Smuzhiyun int numargs; 54*4882a593Smuzhiyun char *tokens[MAXVARGS]; 55*4882a593Smuzhiyun char *values[MAXVARGS]; 56*4882a593Smuzhiyun }; 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun /* Separating read and write FDs allows us to have different 59*4882a593Smuzhiyun * rx and tx method. Example - read tap via raw socket using 60*4882a593Smuzhiyun * recvmmsg, write using legacy tap write calls 61*4882a593Smuzhiyun */ 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun struct vector_fds { 64*4882a593Smuzhiyun int rx_fd; 65*4882a593Smuzhiyun int tx_fd; 66*4882a593Smuzhiyun void *remote_addr; 67*4882a593Smuzhiyun int remote_addr_size; 68*4882a593Smuzhiyun }; 69*4882a593Smuzhiyun 70*4882a593Smuzhiyun #define VECTOR_READ 1 71*4882a593Smuzhiyun #define VECTOR_WRITE (1 < 1) 72*4882a593Smuzhiyun #define VECTOR_HEADERS (1 < 2) 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun extern struct arglist *uml_parse_vector_ifspec(char *arg); 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun extern struct vector_fds *uml_vector_user_open( 77*4882a593Smuzhiyun int unit, 78*4882a593Smuzhiyun struct arglist *parsed 79*4882a593Smuzhiyun ); 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun extern char *uml_vector_fetch_arg( 82*4882a593Smuzhiyun struct arglist *ifspec, 83*4882a593Smuzhiyun char *token 84*4882a593Smuzhiyun ); 85*4882a593Smuzhiyun 86*4882a593Smuzhiyun extern int uml_vector_recvmsg(int fd, void *hdr, int flags); 87*4882a593Smuzhiyun extern int uml_vector_sendmsg(int fd, void *hdr, int flags); 88*4882a593Smuzhiyun extern int uml_vector_writev(int fd, void *hdr, int iovcount); 89*4882a593Smuzhiyun extern int uml_vector_sendmmsg( 90*4882a593Smuzhiyun int fd, void *msgvec, 91*4882a593Smuzhiyun unsigned int vlen, 92*4882a593Smuzhiyun unsigned int flags 93*4882a593Smuzhiyun ); 94*4882a593Smuzhiyun extern int uml_vector_recvmmsg( 95*4882a593Smuzhiyun int fd, 96*4882a593Smuzhiyun void *msgvec, 97*4882a593Smuzhiyun unsigned int vlen, 98*4882a593Smuzhiyun unsigned int flags 99*4882a593Smuzhiyun ); 100*4882a593Smuzhiyun extern void *uml_vector_default_bpf(void *mac); 101*4882a593Smuzhiyun extern void *uml_vector_user_bpf(char *filename); 102*4882a593Smuzhiyun extern int uml_vector_attach_bpf(int fd, void *bpf); 103*4882a593Smuzhiyun extern int uml_vector_detach_bpf(int fd, void *bpf); 104*4882a593Smuzhiyun extern bool uml_raw_enable_qdisc_bypass(int fd); 105*4882a593Smuzhiyun extern bool uml_raw_enable_vnet_headers(int fd); 106*4882a593Smuzhiyun extern bool uml_tap_enable_vnet_headers(int fd); 107*4882a593Smuzhiyun 108*4882a593Smuzhiyun 109*4882a593Smuzhiyun #endif 110