| /* 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_RAW) |
| |
| #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) |
| |
| #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(int fd, void *mac); |
| extern int uml_vector_attach_bpf(int fd, void *bpf, int bpf_len); |
| 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 |