/* 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 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(const 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