summaryrefslogtreecommitdiff
path: root/sys/dev/pci/ubsecvar.h
blob: 68a0719403eb8ee06abf8389f643bd296e916808 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
/*	$OpenBSD: ubsecvar.h,v 1.29 2002/05/02 18:20:50 jason Exp $	*/

/*
 * Copyright (c) 2000 Theo de Raadt
 * Copyright (c) 2001 Patrik Lindergren (patrik@ipunplugged.com)
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Effort sponsored in part by the Defense Advanced Research Projects
 * Agency (DARPA) and Air Force Research Laboratory, Air Force
 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
 *
 */

/* Maximum queue length */
#ifndef UBS_MAX_NQUEUE
#define UBS_MAX_NQUEUE		60
#endif

#define	UBS_MAX_SCATTER		64	/* Maximum scatter/gather depth */

#ifndef UBS_MAX_AGGR
#define	UBS_MAX_AGGR		5	/* Maximum aggregation count */
#endif

#define	UBSEC_CARD(sid)		(((sid) & 0xf0000000) >> 28)
#define	UBSEC_SESSION(sid)	( (sid) & 0x0fffffff)
#define	UBSEC_SID(crd, sesn)	(((crd) << 28) | ((sesn) & 0x0fffffff))

#define UBS_DEF_RTY		0xff	/* PCI Retry Timeout */
#define UBS_DEF_TOUT		0xff	/* PCI TRDY Timeout */
#define UBS_DEF_CACHELINE	0x01	/* Cache Line setting */

struct ubsec_dma_alloc {
	u_int32_t		dma_paddr;
	caddr_t			dma_vaddr;
	bus_dmamap_t		dma_map;
	bus_dma_segment_t	dma_seg;
	bus_size_t		dma_size;
	int			dma_nseg;
};

struct ubsec_q2 {
	SIMPLEQ_ENTRY(ubsec_q2)		q_next;
	struct ubsec_dma_alloc		q_mcr;
	struct ubsec_dma_alloc		q_ctx;
	u_int				q_type;
};

struct ubsec_q2_rng {
	struct ubsec_q2			rng_q;
	struct ubsec_dma_alloc		rng_buf;
	int				rng_used;
};

/* C = (M ^ E) mod N */
#define	UBS_MODEXP_PAR_M	0
#define	UBS_MODEXP_PAR_E	1
#define	UBS_MODEXP_PAR_N	2
#define	UBS_MODEXP_PAR_C	3
struct ubsec_q2_modexp {
	struct ubsec_q2			me_q;
	struct cryptkop *		me_krp;
	struct ubsec_dma_alloc		me_M;
	struct ubsec_dma_alloc		me_E;
	struct ubsec_dma_alloc		me_C;
	struct ubsec_dma_alloc		me_epb;
};

#define	UBSEC_RNG_BUFSIZ	16		/* measured in 32bit words */

struct ubsec_dmachunk {
	struct ubsec_mcr	d_mcr;
	struct ubsec_mcr_add	d_mcradd[UBS_MAX_AGGR-1];
	struct ubsec_pktbuf	d_sbuf[UBS_MAX_SCATTER-1];
	struct ubsec_pktbuf	d_dbuf[UBS_MAX_SCATTER-1];
	u_int32_t		d_macbuf[5];
	union {
		struct ubsec_pktctx_long	ctxl;
		struct ubsec_pktctx		ctx;
	} d_ctx;
};

struct ubsec_dma {
	SIMPLEQ_ENTRY(ubsec_dma)	d_next;
	struct ubsec_dmachunk		*d_dma;
	struct ubsec_dma_alloc		d_alloc;
};

#define	UBS_FLAGS_KEY		0x01		/* has key accelerator */
#define	UBS_FLAGS_LONGCTX	0x02		/* uses long ipsec ctx */

struct ubsec_q {
	SIMPLEQ_ENTRY(ubsec_q)		q_next;
	int				q_nstacked_mcrs;
	struct ubsec_q			*q_stacked_mcr[UBS_MAX_AGGR-1];
	struct cryptop			*q_crp;
	struct ubsec_dma		*q_dma;

	struct mbuf			*q_src_m, *q_dst_m;
	struct uio			*q_src_io, *q_dst_io;

	bus_dmamap_t			q_src_map;
	bus_dmamap_t			q_dst_map;

	int				q_sesn;
	int				q_flags;
};

struct ubsec_softc {
	struct	device		sc_dv;		/* generic device */
	void			*sc_ih;		/* interrupt handler cookie */
	bus_space_handle_t	sc_sh;		/* memory handle */
	bus_space_tag_t		sc_st;		/* memory tag */
	bus_dma_tag_t		sc_dmat;	/* dma tag */
	int			sc_flags;	/* device specific flags */
	u_int32_t		sc_statmask;	/* interrupt status mask */
	int32_t			sc_cid;		/* crypto tag */
	SIMPLEQ_HEAD(,ubsec_q)	sc_queue;	/* packet queue, mcr1 */
	int			sc_nqueue;	/* count enqueued, mcr1 */
	SIMPLEQ_HEAD(,ubsec_q)	sc_qchip;	/* on chip, mcr1 */
	SIMPLEQ_HEAD(,ubsec_q)	sc_freequeue;	/* list of free queue elements */
	SIMPLEQ_HEAD(,ubsec_q2)	sc_queue2;	/* packet queue, mcr2 */
	int			sc_nqueue2;	/* count enqueued, mcr2 */
	SIMPLEQ_HEAD(,ubsec_q2)	sc_qchip2;	/* on chip, mcr2 */
	int			sc_nsessions;	/* # of sessions */
	struct ubsec_session	*sc_sessions;	/* sessions */
	struct timeout		sc_rngto;	/* rng timeout */
	int			sc_rnghz;	/* rng poll time */
	struct ubsec_q2_rng	sc_rng;
	struct ubsec_dma	sc_dmaa[UBS_MAX_NQUEUE];
	struct ubsec_q		*sc_queuea[UBS_MAX_NQUEUE];
	SIMPLEQ_HEAD(,ubsec_q2)	sc_q2free;	/* free list */
};

#define	UBSEC_QFLAGS_COPYOUTIV		0x1

struct ubsec_session {
	u_int32_t	ses_used;
	u_int32_t	ses_deskey[6];		/* 3DES key */
	u_int32_t	ses_hminner[5];		/* hmac inner state */
	u_int32_t	ses_hmouter[5];		/* hmac outer state */
	u_int32_t	ses_iv[2];		/* [3]DES iv */
};

struct ubsec_stats {
	u_int64_t hst_ibytes;
	u_int64_t hst_obytes;
	u_int32_t hst_ipackets;
	u_int32_t hst_opackets;
	u_int32_t hst_invalid;
	u_int32_t hst_nomem;
	u_int32_t hst_queuefull;
	u_int32_t hst_dmaerr;
	u_int32_t hst_mcrerr;
	u_int32_t hst_nodmafree;
};