/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) */ #ifndef __UM_VECTOR_USER_H #define __UM_VECTOR_USER_H #define MAXVARGS 20 #define TOKEN_IFNAME "ifname" #define TRANS_RAW "raw" #define TRANS_RAW_LEN strlen(TRANS_RAW) #define TRANS_TAP "tap" #define TRANS_TAP_LEN strlen(TRANS_TAP) #define TRANS_GRE "gre" #define TRANS_GRE_LEN strlen(TRANS_GRE) #define TRANS_L2TPV3 "l2tpv3" #define TRANS_L2TPV3_LEN strlen(TRANS_L2TPV3) #define TRANS_HYBRID "hybrid" #define TRANS_HYBRID_LEN strlen(TRANS_HYBRID) #define TRANS_BESS "bess" #define TRANS_BESS_LEN strlen(TRANS_BESS) #define DEFAULT_BPF_LEN 6 #ifndef IPPROTO_GRE #define IPPROTO_GRE 0x2F #endif #define GRE_MODE_CHECKSUM cpu_to_be16(8 << 12) /* checksum */ #define GRE_MODE_RESERVED cpu_to_be16(4 << 12) /* unused */ #define GRE_MODE_KEY cpu_to_be16(2 << 12) /* KEY present */ #define GRE_MODE_SEQUENCE cpu_to_be16(1 << 12) /* sequence */ #define GRE_IRB cpu_to_be16(0x6558) #define L2TPV3_DATA_PACKET 0x30000 /* IANA-assigned IP protocol ID for L2TPv3 */ #ifndef IPPROTO_L2TP #define IPPROTO_L2TP 0x73 #endif struct arglist { int numargs; char *tokens[MAXVARGS]; char *values[MAXVARGS]; }; /* Separating read and write FDs allows us to have different * rx and tx method. Example - read tap via raw socket using * recvmmsg, write using legacy tap write calls */ struct vector_fds { int rx_fd; int tx_fd; void *remote_addr; int remote_addr_size; }; #define VECTOR_READ 1 #define VECTOR_WRITE (1 < 1) #define VECTOR_HEADERS (1 < 2) extern struct arglist *uml_parse_vector_ifspec(char *arg); extern struct vector_fds *uml_vector_user_open( int unit, struct arglist *parsed ); extern char *uml_vector_fetch_arg( struct arglist *ifspec, char *token ); extern int uml_vector_recvmsg(int fd, void *hdr, int flags); extern int uml_vector_sendmsg(int fd, void *hdr, int flags); extern int uml_vector_writev(int fd, void *hdr, int iovcount); extern int uml_vector_sendmmsg( int fd, void *msgvec, unsigned int vlen, unsigned int flags ); extern int uml_vector_recvmmsg( int fd, void *msgvec, unsigned int vlen, unsigned int flags ); extern void *uml_vector_default_bpf(void *mac); extern void *uml_vector_user_bpf(char *filename); extern int uml_vector_attach_bpf(int fd, void *bpf); extern int uml_vector_detach_bpf(int fd, void *bpf); extern bool uml_raw_enable_qdisc_bypass(int fd); extern bool uml_raw_enable_vnet_headers(int fd); extern bool uml_tap_enable_vnet_headers(int fd); #endif