[thirdparty/linux.git] / arch / um / drivers / vector_user.h

/* 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
Commit	Line	Data
dbddf429	1	/* SPDX-License-Identifier: GPL-2.0 */
49da7e64 AI	2	/*
49da7e64 AI	3	* Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
49da7e64 AI	4	*/
	5
	6	#ifndef __UM_VECTOR_USER_H
	7	#define __UM_VECTOR_USER_H
	8
	9	#define MAXVARGS 20
	10
	11	#define TOKEN_IFNAME "ifname"
	12
	13	#define TRANS_RAW "raw"
	14	#define TRANS_RAW_LEN strlen(TRANS_RAW)
	15
	16	#define TRANS_TAP "tap"
	17	#define TRANS_TAP_LEN strlen(TRANS_TAP)
	18
49da7e64	19	#define TRANS_GRE "gre"
2e27d33d	20	#define TRANS_GRE_LEN strlen(TRANS_GRE)
49da7e64 AI	21
	22	#define TRANS_L2TPV3 "l2tpv3"
	23	#define TRANS_L2TPV3_LEN strlen(TRANS_L2TPV3)
	24
b3b8ca2a AI	25	#define TRANS_HYBRID "hybrid"
	26	#define TRANS_HYBRID_LEN strlen(TRANS_HYBRID)
	27
77f1073c AI	28	#define TRANS_BESS "bess"
	29	#define TRANS_BESS_LEN strlen(TRANS_BESS)
	30
9807019a AI	31	#define DEFAULT_BPF_LEN 6
9807019a AI	32
49da7e64 AI	33	#ifndef IPPROTO_GRE
	34	#define IPPROTO_GRE 0x2F
	35	#endif
	36
	37	#define GRE_MODE_CHECKSUM cpu_to_be16(8 << 12) /* checksum */
	38	#define GRE_MODE_RESERVED cpu_to_be16(4 << 12) /* unused */
	39	#define GRE_MODE_KEY cpu_to_be16(2 << 12) /* KEY present */
	40	#define GRE_MODE_SEQUENCE cpu_to_be16(1 << 12) /* sequence */
	41
	42	#define GRE_IRB cpu_to_be16(0x6558)
	43
	44	#define L2TPV3_DATA_PACKET 0x30000
	45
	46	/* IANA-assigned IP protocol ID for L2TPv3 */
	47
	48	#ifndef IPPROTO_L2TP
	49	#define IPPROTO_L2TP 0x73
	50	#endif
	51
	52	struct arglist {
	53	int numargs;
	54	char *tokens[MAXVARGS];
	55	char *values[MAXVARGS];
	56	};
	57
	58	/* Separating read and write FDs allows us to have different
	59	* rx and tx method. Example - read tap via raw socket using
	60	* recvmmsg, write using legacy tap write calls
	61	*/
	62
	63	struct vector_fds {
	64	int rx_fd;
	65	int tx_fd;
	66	void *remote_addr;
	67	int remote_addr_size;
	68	};
	69
	70	#define VECTOR_READ 1
	71	#define VECTOR_WRITE (1 < 1)
	72	#define VECTOR_HEADERS (1 < 2)
	73
	74	extern struct arglist uml_parse_vector_ifspec(char arg);
	75
	76	extern struct vector_fds *uml_vector_user_open(
	77	int unit,
	78	struct arglist *parsed
	79	);
	80
	81	extern char *uml_vector_fetch_arg(
	82	struct arglist *ifspec,
	83	char *token
	84	);
	85
	86	extern int uml_vector_recvmsg(int fd, void *hdr, int flags);
	87	extern int uml_vector_sendmsg(int fd, void *hdr, int flags);
	88	extern int uml_vector_writev(int fd, void *hdr, int iovcount);
	89	extern int uml_vector_sendmmsg(
	90	int fd, void *msgvec,
	91	unsigned int vlen,
	92	unsigned int flags
	93	);
	94	extern int uml_vector_recvmmsg(
	95	int fd,
	96	void *msgvec,
97	unsigned int vlen,
98	unsigned int flags
99	);
9807019a AI	100	extern void uml_vector_default_bpf(void mac);
	101	extern void uml_vector_user_bpf(char filename);
	102	extern int uml_vector_attach_bpf(int fd, void *bpf);
	103	extern int uml_vector_detach_bpf(int fd, void *bpf);
e40238de	104	extern bool uml_raw_enable_qdisc_bypass(int fd);
49da7e64 AI	105	extern bool uml_raw_enable_vnet_headers(int fd);
	106	extern bool uml_tap_enable_vnet_headers(int fd);
	107
	108
	109	#endif