18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) 48c2ecf20Sopenharmony_ci */ 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci#ifndef __UM_VECTOR_USER_H 78c2ecf20Sopenharmony_ci#define __UM_VECTOR_USER_H 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ci#define MAXVARGS 20 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ci#define TOKEN_IFNAME "ifname" 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ci#define TRANS_RAW "raw" 148c2ecf20Sopenharmony_ci#define TRANS_RAW_LEN strlen(TRANS_RAW) 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci#define TRANS_TAP "tap" 178c2ecf20Sopenharmony_ci#define TRANS_TAP_LEN strlen(TRANS_TAP) 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_ci#define TRANS_GRE "gre" 208c2ecf20Sopenharmony_ci#define TRANS_GRE_LEN strlen(TRANS_GRE) 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci#define TRANS_L2TPV3 "l2tpv3" 238c2ecf20Sopenharmony_ci#define TRANS_L2TPV3_LEN strlen(TRANS_L2TPV3) 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci#define TRANS_HYBRID "hybrid" 268c2ecf20Sopenharmony_ci#define TRANS_HYBRID_LEN strlen(TRANS_HYBRID) 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci#define TRANS_BESS "bess" 298c2ecf20Sopenharmony_ci#define TRANS_BESS_LEN strlen(TRANS_BESS) 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci#define DEFAULT_BPF_LEN 6 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ci#ifndef IPPROTO_GRE 348c2ecf20Sopenharmony_ci#define IPPROTO_GRE 0x2F 358c2ecf20Sopenharmony_ci#endif 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci#define GRE_MODE_CHECKSUM cpu_to_be16(8 << 12) /* checksum */ 388c2ecf20Sopenharmony_ci#define GRE_MODE_RESERVED cpu_to_be16(4 << 12) /* unused */ 398c2ecf20Sopenharmony_ci#define GRE_MODE_KEY cpu_to_be16(2 << 12) /* KEY present */ 408c2ecf20Sopenharmony_ci#define GRE_MODE_SEQUENCE cpu_to_be16(1 << 12) /* sequence */ 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ci#define GRE_IRB cpu_to_be16(0x6558) 438c2ecf20Sopenharmony_ci 448c2ecf20Sopenharmony_ci#define L2TPV3_DATA_PACKET 0x30000 458c2ecf20Sopenharmony_ci 468c2ecf20Sopenharmony_ci/* IANA-assigned IP protocol ID for L2TPv3 */ 478c2ecf20Sopenharmony_ci 488c2ecf20Sopenharmony_ci#ifndef IPPROTO_L2TP 498c2ecf20Sopenharmony_ci#define IPPROTO_L2TP 0x73 508c2ecf20Sopenharmony_ci#endif 518c2ecf20Sopenharmony_ci 528c2ecf20Sopenharmony_cistruct arglist { 538c2ecf20Sopenharmony_ci int numargs; 548c2ecf20Sopenharmony_ci char *tokens[MAXVARGS]; 558c2ecf20Sopenharmony_ci char *values[MAXVARGS]; 568c2ecf20Sopenharmony_ci}; 578c2ecf20Sopenharmony_ci 588c2ecf20Sopenharmony_ci/* Separating read and write FDs allows us to have different 598c2ecf20Sopenharmony_ci * rx and tx method. Example - read tap via raw socket using 608c2ecf20Sopenharmony_ci * recvmmsg, write using legacy tap write calls 618c2ecf20Sopenharmony_ci */ 628c2ecf20Sopenharmony_ci 638c2ecf20Sopenharmony_cistruct vector_fds { 648c2ecf20Sopenharmony_ci int rx_fd; 658c2ecf20Sopenharmony_ci int tx_fd; 668c2ecf20Sopenharmony_ci void *remote_addr; 678c2ecf20Sopenharmony_ci int remote_addr_size; 688c2ecf20Sopenharmony_ci}; 698c2ecf20Sopenharmony_ci 708c2ecf20Sopenharmony_ci#define VECTOR_READ 1 718c2ecf20Sopenharmony_ci#define VECTOR_WRITE (1 < 1) 728c2ecf20Sopenharmony_ci#define VECTOR_HEADERS (1 < 2) 738c2ecf20Sopenharmony_ci 748c2ecf20Sopenharmony_ciextern struct arglist *uml_parse_vector_ifspec(char *arg); 758c2ecf20Sopenharmony_ci 768c2ecf20Sopenharmony_ciextern struct vector_fds *uml_vector_user_open( 778c2ecf20Sopenharmony_ci int unit, 788c2ecf20Sopenharmony_ci struct arglist *parsed 798c2ecf20Sopenharmony_ci); 808c2ecf20Sopenharmony_ci 818c2ecf20Sopenharmony_ciextern char *uml_vector_fetch_arg( 828c2ecf20Sopenharmony_ci struct arglist *ifspec, 838c2ecf20Sopenharmony_ci char *token 848c2ecf20Sopenharmony_ci); 858c2ecf20Sopenharmony_ci 868c2ecf20Sopenharmony_ciextern int uml_vector_recvmsg(int fd, void *hdr, int flags); 878c2ecf20Sopenharmony_ciextern int uml_vector_sendmsg(int fd, void *hdr, int flags); 888c2ecf20Sopenharmony_ciextern int uml_vector_writev(int fd, void *hdr, int iovcount); 898c2ecf20Sopenharmony_ciextern int uml_vector_sendmmsg( 908c2ecf20Sopenharmony_ci int fd, void *msgvec, 918c2ecf20Sopenharmony_ci unsigned int vlen, 928c2ecf20Sopenharmony_ci unsigned int flags 938c2ecf20Sopenharmony_ci); 948c2ecf20Sopenharmony_ciextern int uml_vector_recvmmsg( 958c2ecf20Sopenharmony_ci int fd, 968c2ecf20Sopenharmony_ci void *msgvec, 978c2ecf20Sopenharmony_ci unsigned int vlen, 988c2ecf20Sopenharmony_ci unsigned int flags 998c2ecf20Sopenharmony_ci); 1008c2ecf20Sopenharmony_ciextern void *uml_vector_default_bpf(void *mac); 1018c2ecf20Sopenharmony_ciextern void *uml_vector_user_bpf(char *filename); 1028c2ecf20Sopenharmony_ciextern int uml_vector_attach_bpf(int fd, void *bpf); 1038c2ecf20Sopenharmony_ciextern int uml_vector_detach_bpf(int fd, void *bpf); 1048c2ecf20Sopenharmony_ciextern bool uml_raw_enable_qdisc_bypass(int fd); 1058c2ecf20Sopenharmony_ciextern bool uml_raw_enable_vnet_headers(int fd); 1068c2ecf20Sopenharmony_ciextern bool uml_tap_enable_vnet_headers(int fd); 1078c2ecf20Sopenharmony_ci 1088c2ecf20Sopenharmony_ci 1098c2ecf20Sopenharmony_ci#endif 110