1139825Simp/*- 2167755Ssam * Copyright (c) 2002-2006 Sam Leffler. All rights reserved. 3167755Ssam * 4167755Ssam * Redistribution and use in source and binary forms, with or without 5167755Ssam * modification, are permitted provided that the following conditions 6167755Ssam * are met: 7167755Ssam * 1. Redistributions of source code must retain the above copyright 8167755Ssam * notice, this list of conditions and the following disclaimer. 9167755Ssam * 2. Redistributions in binary form must reproduce the above copyright 10167755Ssam * notice, this list of conditions and the following disclaimer in the 11167755Ssam * documentation and/or other materials provided with the distribution. 12167755Ssam * 13167755Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14167755Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15167755Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16167755Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17167755Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18167755Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19167755Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20167755Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21167755Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22167755Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23167755Ssam */ 24167755Ssam 25167755Ssam#include <sys/cdefs.h> 26167755Ssam__FBSDID("$FreeBSD$"); 27167755Ssam 28167755Ssam/* 29167755Ssam * Cryptographic Subsystem. 30167755Ssam * 31167755Ssam * This code is derived from the Openbsd Cryptographic Framework (OCF) 32167755Ssam * that has the copyright shown below. Very little of the original 33167755Ssam * code remains. 34167755Ssam */ 35167755Ssam 36167755Ssam/*- 37104476Ssam * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu) 38104476Ssam * 39104476Ssam * This code was written by Angelos D. Keromytis in Athens, Greece, in 40104476Ssam * February 2000. Network Security Technologies Inc. (NSTI) kindly 41104476Ssam * supported the development of this code. 42104476Ssam * 43104476Ssam * Copyright (c) 2000, 2001 Angelos D. Keromytis 44104476Ssam * 45104476Ssam * Permission to use, copy, and modify this software with or without fee 46104476Ssam * is hereby granted, provided that this entire notice is included in 47104476Ssam * all source code copies of any software which is or includes a copy or 48104476Ssam * modification of this software. 49104476Ssam * 50104476Ssam * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR 51104476Ssam * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY 52104476Ssam * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE 53104476Ssam * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR 54104476Ssam * PURPOSE. 55104476Ssam */ 56116191Sobrien 57108587Ssam#define CRYPTO_TIMING /* enable timing support */ 58104476Ssam 59167755Ssam#include "opt_ddb.h" 60199884Sbz#include "opt_kdtrace.h" 61167755Ssam 62104476Ssam#include <sys/param.h> 63104476Ssam#include <sys/systm.h> 64104476Ssam#include <sys/eventhandler.h> 65104476Ssam#include <sys/kernel.h> 66104476Ssam#include <sys/kthread.h> 67104476Ssam#include <sys/lock.h> 68129880Sphk#include <sys/module.h> 69104476Ssam#include <sys/mutex.h> 70104476Ssam#include <sys/malloc.h> 71104476Ssam#include <sys/proc.h> 72199884Sbz#include <sys/sdt.h> 73104476Ssam#include <sys/sysctl.h> 74104476Ssam 75167755Ssam#include <ddb/ddb.h> 76167755Ssam 77104476Ssam#include <vm/uma.h> 78104476Ssam#include <opencrypto/cryptodev.h> 79104628Ssam#include <opencrypto/xform.h> /* XXX for M_XDATA */ 80104476Ssam 81167755Ssam#include <sys/kobj.h> 82167755Ssam#include <sys/bus.h> 83167755Ssam#include "cryptodev_if.h" 84167755Ssam 85208834Skib#if defined(__i386__) || defined(__amd64__) 86208834Skib#include <machine/pcb.h> 87208834Skib#endif 88208834Skib 89199884SbzSDT_PROVIDER_DEFINE(opencrypto); 90199884Sbz 91104476Ssam/* 92104476Ssam * Crypto drivers register themselves by allocating a slot in the 93104476Ssam * crypto_drivers table with crypto_get_driverid() and then registering 94104476Ssam * each algorithm they support with crypto_register() and crypto_kregister(). 95104476Ssam */ 96104476Ssamstatic struct mtx crypto_drivers_mtx; /* lock on driver table */ 97104476Ssam#define CRYPTO_DRIVER_LOCK() mtx_lock(&crypto_drivers_mtx) 98104476Ssam#define CRYPTO_DRIVER_UNLOCK() mtx_unlock(&crypto_drivers_mtx) 99167755Ssam#define CRYPTO_DRIVER_ASSERT() mtx_assert(&crypto_drivers_mtx, MA_OWNED) 100167755Ssam 101167755Ssam/* 102167755Ssam * Crypto device/driver capabilities structure. 103167755Ssam * 104167755Ssam * Synchronization: 105167755Ssam * (d) - protected by CRYPTO_DRIVER_LOCK() 106167755Ssam * (q) - protected by CRYPTO_Q_LOCK() 107167755Ssam * Not tagged fields are read-only. 108167755Ssam */ 109167755Ssamstruct cryptocap { 110167755Ssam device_t cc_dev; /* (d) device/driver */ 111167755Ssam u_int32_t cc_sessions; /* (d) # of sessions */ 112167755Ssam u_int32_t cc_koperations; /* (d) # os asym operations */ 113167755Ssam /* 114167755Ssam * Largest possible operator length (in bits) for each type of 115167755Ssam * encryption algorithm. XXX not used 116167755Ssam */ 117167755Ssam u_int16_t cc_max_op_len[CRYPTO_ALGORITHM_MAX + 1]; 118167755Ssam u_int8_t cc_alg[CRYPTO_ALGORITHM_MAX + 1]; 119167755Ssam u_int8_t cc_kalg[CRK_ALGORITHM_MAX + 1]; 120167755Ssam 121167755Ssam int cc_flags; /* (d) flags */ 122167755Ssam#define CRYPTOCAP_F_CLEANUP 0x80000000 /* needs resource cleanup */ 123167755Ssam int cc_qblocked; /* (q) symmetric q blocked */ 124167755Ssam int cc_kqblocked; /* (q) asymmetric q blocked */ 125167755Ssam}; 126104476Ssamstatic struct cryptocap *crypto_drivers = NULL; 127104476Ssamstatic int crypto_drivers_num = 0; 128104476Ssam 129104476Ssam/* 130104476Ssam * There are two queues for crypto requests; one for symmetric (e.g. 131104476Ssam * cipher) operations and one for asymmetric (e.g. MOD)operations. 132104476Ssam * A single mutex is used to lock access to both queues. We could 133104476Ssam * have one per-queue but having one simplifies handling of block/unblock 134104476Ssam * operations. 135104476Ssam */ 136158827Spjdstatic int crp_sleep = 0; 137104476Ssamstatic TAILQ_HEAD(,cryptop) crp_q; /* request queues */ 138104476Ssamstatic TAILQ_HEAD(,cryptkop) crp_kq; 139104476Ssamstatic struct mtx crypto_q_mtx; 140104476Ssam#define CRYPTO_Q_LOCK() mtx_lock(&crypto_q_mtx) 141104476Ssam#define CRYPTO_Q_UNLOCK() mtx_unlock(&crypto_q_mtx) 142104476Ssam 143104476Ssam/* 144104476Ssam * There are two queues for processing completed crypto requests; one 145104476Ssam * for the symmetric and one for the asymmetric ops. We only need one 146104476Ssam * but have two to avoid type futzing (cryptop vs. cryptkop). A single 147104476Ssam * mutex is used to lock access to both queues. Note that this lock 148104476Ssam * must be separate from the lock on request queues to insure driver 149104476Ssam * callbacks don't generate lock order reversals. 150104476Ssam */ 151104476Ssamstatic TAILQ_HEAD(,cryptop) crp_ret_q; /* callback queues */ 152104476Ssamstatic TAILQ_HEAD(,cryptkop) crp_ret_kq; 153104476Ssamstatic struct mtx crypto_ret_q_mtx; 154104476Ssam#define CRYPTO_RETQ_LOCK() mtx_lock(&crypto_ret_q_mtx) 155104476Ssam#define CRYPTO_RETQ_UNLOCK() mtx_unlock(&crypto_ret_q_mtx) 156158826Spjd#define CRYPTO_RETQ_EMPTY() (TAILQ_EMPTY(&crp_ret_q) && TAILQ_EMPTY(&crp_ret_kq)) 157104476Ssam 158104476Ssamstatic uma_zone_t cryptop_zone; 159104476Ssamstatic uma_zone_t cryptodesc_zone; 160104476Ssam 161104476Ssamint crypto_userasymcrypto = 1; /* userland may do asym crypto reqs */ 162104476SsamSYSCTL_INT(_kern, OID_AUTO, userasymcrypto, CTLFLAG_RW, 163104476Ssam &crypto_userasymcrypto, 0, 164104476Ssam "Enable/disable user-mode access to asymmetric crypto support"); 165104476Ssamint crypto_devallowsoft = 0; /* only use hardware crypto for asym */ 166104476SsamSYSCTL_INT(_kern, OID_AUTO, cryptodevallowsoft, CTLFLAG_RW, 167104476Ssam &crypto_devallowsoft, 0, 168104476Ssam "Enable/disable use of software asym crypto support"); 169104476Ssam 170104476SsamMALLOC_DEFINE(M_CRYPTO_DATA, "crypto", "crypto session records"); 171104476Ssam 172108588Ssamstatic void crypto_proc(void); 173108588Ssamstatic struct proc *cryptoproc; 174108588Ssamstatic void crypto_ret_proc(void); 175108588Ssamstatic struct proc *cryptoretproc; 176108588Ssamstatic void crypto_destroy(void); 177158702Spjdstatic int crypto_invoke(struct cryptocap *cap, struct cryptop *crp, int hint); 178167755Ssamstatic int crypto_kinvoke(struct cryptkop *krp, int flags); 179108588Ssam 180108587Ssamstatic struct cryptostats cryptostats; 181108587SsamSYSCTL_STRUCT(_kern, OID_AUTO, crypto_stats, CTLFLAG_RW, &cryptostats, 182108587Ssam cryptostats, "Crypto system statistics"); 183108587Ssam 184108587Ssam#ifdef CRYPTO_TIMING 185108587Ssamstatic int crypto_timing = 0; 186108587SsamSYSCTL_INT(_debug, OID_AUTO, crypto_timing, CTLFLAG_RW, 187108587Ssam &crypto_timing, 0, "Enable/disable crypto timing support"); 188108587Ssam#endif 189108587Ssam 190108588Ssamstatic int 191104476Ssamcrypto_init(void) 192104476Ssam{ 193108588Ssam int error; 194108588Ssam 195115746Ssam mtx_init(&crypto_drivers_mtx, "crypto", "crypto driver table", 196115746Ssam MTX_DEF|MTX_QUIET); 197108588Ssam 198108588Ssam TAILQ_INIT(&crp_q); 199108588Ssam TAILQ_INIT(&crp_kq); 200115746Ssam mtx_init(&crypto_q_mtx, "crypto", "crypto op queues", MTX_DEF); 201108588Ssam 202108588Ssam TAILQ_INIT(&crp_ret_q); 203108588Ssam TAILQ_INIT(&crp_ret_kq); 204115746Ssam mtx_init(&crypto_ret_q_mtx, "crypto", "crypto return queues", MTX_DEF); 205108588Ssam 206104476Ssam cryptop_zone = uma_zcreate("cryptop", sizeof (struct cryptop), 207104476Ssam 0, 0, 0, 0, 208104476Ssam UMA_ALIGN_PTR, UMA_ZONE_ZINIT); 209104476Ssam cryptodesc_zone = uma_zcreate("cryptodesc", sizeof (struct cryptodesc), 210104476Ssam 0, 0, 0, 0, 211104476Ssam UMA_ALIGN_PTR, UMA_ZONE_ZINIT); 212108588Ssam if (cryptodesc_zone == NULL || cryptop_zone == NULL) { 213108588Ssam printf("crypto_init: cannot setup crypto zones\n"); 214108588Ssam error = ENOMEM; 215108588Ssam goto bad; 216108588Ssam } 217104476Ssam 218104476Ssam crypto_drivers_num = CRYPTO_DRIVERS_INITIAL; 219104476Ssam crypto_drivers = malloc(crypto_drivers_num * 220104476Ssam sizeof(struct cryptocap), M_CRYPTO_DATA, M_NOWAIT | M_ZERO); 221108588Ssam if (crypto_drivers == NULL) { 222108588Ssam printf("crypto_init: cannot setup crypto drivers\n"); 223108588Ssam error = ENOMEM; 224108588Ssam goto bad; 225108588Ssam } 226104476Ssam 227172836Sjulian error = kproc_create((void (*)(void *)) crypto_proc, NULL, 228108588Ssam &cryptoproc, 0, 0, "crypto"); 229108588Ssam if (error) { 230108588Ssam printf("crypto_init: cannot start crypto thread; error %d", 231108588Ssam error); 232108588Ssam goto bad; 233108588Ssam } 234104476Ssam 235172836Sjulian error = kproc_create((void (*)(void *)) crypto_ret_proc, NULL, 236108588Ssam &cryptoretproc, 0, 0, "crypto returns"); 237108588Ssam if (error) { 238108588Ssam printf("crypto_init: cannot start cryptoret thread; error %d", 239108588Ssam error); 240108588Ssam goto bad; 241108588Ssam } 242108588Ssam return 0; 243108588Ssambad: 244108588Ssam crypto_destroy(); 245108588Ssam return error; 246104476Ssam} 247104476Ssam 248104476Ssam/* 249108588Ssam * Signal a crypto thread to terminate. We use the driver 250108588Ssam * table lock to synchronize the sleep/wakeups so that we 251108588Ssam * are sure the threads have terminated before we release 252108588Ssam * the data structures they use. See crypto_finis below 253108588Ssam * for the other half of this song-and-dance. 254108588Ssam */ 255108588Ssamstatic void 256108588Ssamcrypto_terminate(struct proc **pp, void *q) 257108588Ssam{ 258108588Ssam struct proc *p; 259108588Ssam 260108588Ssam mtx_assert(&crypto_drivers_mtx, MA_OWNED); 261108588Ssam p = *pp; 262108588Ssam *pp = NULL; 263108588Ssam if (p) { 264108588Ssam wakeup_one(q); 265108588Ssam PROC_LOCK(p); /* NB: insure we don't miss wakeup */ 266108588Ssam CRYPTO_DRIVER_UNLOCK(); /* let crypto_finis progress */ 267108588Ssam msleep(p, &p->p_mtx, PWAIT, "crypto_destroy", 0); 268108588Ssam PROC_UNLOCK(p); 269108588Ssam CRYPTO_DRIVER_LOCK(); 270108588Ssam } 271108588Ssam} 272108588Ssam 273108588Ssamstatic void 274108588Ssamcrypto_destroy(void) 275108588Ssam{ 276108588Ssam /* 277108588Ssam * Terminate any crypto threads. 278108588Ssam */ 279108588Ssam CRYPTO_DRIVER_LOCK(); 280108588Ssam crypto_terminate(&cryptoproc, &crp_q); 281108588Ssam crypto_terminate(&cryptoretproc, &crp_ret_q); 282108588Ssam CRYPTO_DRIVER_UNLOCK(); 283108588Ssam 284108588Ssam /* XXX flush queues??? */ 285108588Ssam 286108588Ssam /* 287108588Ssam * Reclaim dynamically allocated resources. 288108588Ssam */ 289108588Ssam if (crypto_drivers != NULL) 290108588Ssam free(crypto_drivers, M_CRYPTO_DATA); 291108588Ssam 292108588Ssam if (cryptodesc_zone != NULL) 293108588Ssam uma_zdestroy(cryptodesc_zone); 294108588Ssam if (cryptop_zone != NULL) 295108588Ssam uma_zdestroy(cryptop_zone); 296108588Ssam mtx_destroy(&crypto_q_mtx); 297108588Ssam mtx_destroy(&crypto_ret_q_mtx); 298108588Ssam mtx_destroy(&crypto_drivers_mtx); 299108588Ssam} 300108588Ssam 301167755Ssamstatic struct cryptocap * 302167755Ssamcrypto_checkdriver(u_int32_t hid) 303167755Ssam{ 304167755Ssam if (crypto_drivers == NULL) 305167755Ssam return NULL; 306167755Ssam return (hid >= crypto_drivers_num ? NULL : &crypto_drivers[hid]); 307167755Ssam} 308167755Ssam 309108588Ssam/* 310167755Ssam * Compare a driver's list of supported algorithms against another 311167755Ssam * list; return non-zero if all algorithms are supported. 312105251Smarkm */ 313105251Smarkmstatic int 314167755Ssamdriver_suitable(const struct cryptocap *cap, const struct cryptoini *cri) 315105251Smarkm{ 316167755Ssam const struct cryptoini *cr; 317108588Ssam 318167755Ssam /* See if all the algorithms are supported. */ 319167755Ssam for (cr = cri; cr; cr = cr->cri_next) 320167755Ssam if (cap->cc_alg[cr->cri_alg] == 0) 321167755Ssam return 0; 322167755Ssam return 1; 323105251Smarkm} 324105251Smarkm 325105251Smarkm/* 326167755Ssam * Select a driver for a new session that supports the specified 327167755Ssam * algorithms and, optionally, is constrained according to the flags. 328167755Ssam * The algorithm we use here is pretty stupid; just use the 329167755Ssam * first driver that supports all the algorithms we need. If there 330167755Ssam * are multiple drivers we choose the driver with the fewest active 331167755Ssam * sessions. We prefer hardware-backed drivers to software ones. 332167755Ssam * 333167755Ssam * XXX We need more smarts here (in real life too, but that's 334167755Ssam * XXX another story altogether). 335104476Ssam */ 336167755Ssamstatic struct cryptocap * 337167755Ssamcrypto_select_driver(const struct cryptoini *cri, int flags) 338104476Ssam{ 339167755Ssam struct cryptocap *cap, *best; 340167755Ssam int match, hid; 341104476Ssam 342167755Ssam CRYPTO_DRIVER_ASSERT(); 343104476Ssam 344104476Ssam /* 345167755Ssam * Look first for hardware crypto devices if permitted. 346104476Ssam */ 347167755Ssam if (flags & CRYPTOCAP_F_HARDWARE) 348167755Ssam match = CRYPTOCAP_F_HARDWARE; 349167755Ssam else 350167755Ssam match = CRYPTOCAP_F_SOFTWARE; 351167755Ssam best = NULL; 352167755Ssamagain: 353167755Ssam for (hid = 0; hid < crypto_drivers_num; hid++) { 354167755Ssam cap = &crypto_drivers[hid]; 355167755Ssam /* 356167755Ssam * If it's not initialized, is in the process of 357167755Ssam * going away, or is not appropriate (hardware 358167755Ssam * or software based on match), then skip. 359167755Ssam */ 360167755Ssam if (cap->cc_dev == NULL || 361167755Ssam (cap->cc_flags & CRYPTOCAP_F_CLEANUP) || 362167755Ssam (cap->cc_flags & match) == 0) 363167755Ssam continue; 364104476Ssam 365167755Ssam /* verify all the algorithms are supported. */ 366167755Ssam if (driver_suitable(cap, cri)) { 367167755Ssam if (best == NULL || 368167755Ssam cap->cc_sessions < best->cc_sessions) 369167755Ssam best = cap; 370159240Spjd } 371159240Spjd } 372167755Ssam if (best != NULL) 373167755Ssam return best; 374167755Ssam if (match == CRYPTOCAP_F_HARDWARE && (flags & CRYPTOCAP_F_SOFTWARE)) { 375167755Ssam /* sort of an Algol 68-style for loop */ 376167755Ssam match = CRYPTOCAP_F_SOFTWARE; 377167755Ssam goto again; 378167755Ssam } 379167755Ssam return best; 380167755Ssam} 381104476Ssam 382167755Ssam/* 383167755Ssam * Create a new session. The crid argument specifies a crypto 384167755Ssam * driver to use or constraints on a driver to select (hardware 385167755Ssam * only, software only, either). Whatever driver is selected 386167755Ssam * must be capable of the requested crypto algorithms. 387167755Ssam */ 388167755Ssamint 389167755Ssamcrypto_newsession(u_int64_t *sid, struct cryptoini *cri, int crid) 390167755Ssam{ 391167755Ssam struct cryptocap *cap; 392167755Ssam u_int32_t hid, lid; 393167755Ssam int err; 394159240Spjd 395167755Ssam CRYPTO_DRIVER_LOCK(); 396167755Ssam if ((crid & (CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE)) == 0) { 397167755Ssam /* 398167755Ssam * Use specified driver; verify it is capable. 399167755Ssam */ 400167755Ssam cap = crypto_checkdriver(crid); 401167755Ssam if (cap != NULL && !driver_suitable(cap, cri)) 402159240Spjd cap = NULL; 403167755Ssam } else { 404167755Ssam /* 405167755Ssam * No requested driver; select based on crid flags. 406167755Ssam */ 407167755Ssam cap = crypto_select_driver(cri, crid); 408167755Ssam /* 409167755Ssam * if NULL then can't do everything in one session. 410167755Ssam * XXX Fix this. We need to inject a "virtual" session 411167755Ssam * XXX layer right about here. 412167755Ssam */ 413104476Ssam } 414159240Spjd if (cap != NULL) { 415159240Spjd /* Call the driver initialization routine. */ 416167755Ssam hid = cap - crypto_drivers; 417159240Spjd lid = hid; /* Pass the driver ID. */ 418167755Ssam err = CRYPTODEV_NEWSESSION(cap->cc_dev, &lid, cri); 419159240Spjd if (err == 0) { 420167755Ssam (*sid) = (cap->cc_flags & 0xff000000) 421167755Ssam | (hid & 0x00ffffff); 422159240Spjd (*sid) <<= 32; 423159240Spjd (*sid) |= (lid & 0xffffffff); 424159240Spjd cap->cc_sessions++; 425159240Spjd } 426167755Ssam } else 427167755Ssam err = EINVAL; 428104476Ssam CRYPTO_DRIVER_UNLOCK(); 429104476Ssam return err; 430104476Ssam} 431104476Ssam 432158702Spjdstatic void 433158702Spjdcrypto_remove(struct cryptocap *cap) 434158702Spjd{ 435158702Spjd 436158702Spjd mtx_assert(&crypto_drivers_mtx, MA_OWNED); 437158702Spjd if (cap->cc_sessions == 0 && cap->cc_koperations == 0) 438158702Spjd bzero(cap, sizeof(*cap)); 439158702Spjd} 440158702Spjd 441104476Ssam/* 442104476Ssam * Delete an existing session (or a reserved session on an unregistered 443104476Ssam * driver). 444104476Ssam */ 445104476Ssamint 446104476Ssamcrypto_freesession(u_int64_t sid) 447104476Ssam{ 448158702Spjd struct cryptocap *cap; 449104476Ssam u_int32_t hid; 450104476Ssam int err; 451104476Ssam 452104476Ssam CRYPTO_DRIVER_LOCK(); 453104476Ssam 454104476Ssam if (crypto_drivers == NULL) { 455104476Ssam err = EINVAL; 456104476Ssam goto done; 457104476Ssam } 458104476Ssam 459104476Ssam /* Determine two IDs. */ 460116924Ssam hid = CRYPTO_SESID2HID(sid); 461104476Ssam 462104476Ssam if (hid >= crypto_drivers_num) { 463104476Ssam err = ENOENT; 464104476Ssam goto done; 465104476Ssam } 466158702Spjd cap = &crypto_drivers[hid]; 467104476Ssam 468158702Spjd if (cap->cc_sessions) 469158702Spjd cap->cc_sessions--; 470104476Ssam 471104476Ssam /* Call the driver cleanup routine, if available. */ 472167755Ssam err = CRYPTODEV_FREESESSION(cap->cc_dev, sid); 473104476Ssam 474158702Spjd if (cap->cc_flags & CRYPTOCAP_F_CLEANUP) 475158702Spjd crypto_remove(cap); 476104476Ssam 477104476Ssamdone: 478104476Ssam CRYPTO_DRIVER_UNLOCK(); 479104476Ssam return err; 480104476Ssam} 481104476Ssam 482104476Ssam/* 483104476Ssam * Return an unused driver id. Used by drivers prior to registering 484104476Ssam * support for the algorithms they handle. 485104476Ssam */ 486104476Ssamint32_t 487167755Ssamcrypto_get_driverid(device_t dev, int flags) 488104476Ssam{ 489104476Ssam struct cryptocap *newdrv; 490104476Ssam int i; 491104476Ssam 492167755Ssam if ((flags & (CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE)) == 0) { 493167755Ssam printf("%s: no flags specified when registering driver\n", 494167755Ssam device_get_nameunit(dev)); 495167755Ssam return -1; 496167755Ssam } 497167755Ssam 498104476Ssam CRYPTO_DRIVER_LOCK(); 499104476Ssam 500158702Spjd for (i = 0; i < crypto_drivers_num; i++) { 501167755Ssam if (crypto_drivers[i].cc_dev == NULL && 502158702Spjd (crypto_drivers[i].cc_flags & CRYPTOCAP_F_CLEANUP) == 0) { 503104476Ssam break; 504158702Spjd } 505158702Spjd } 506104476Ssam 507104476Ssam /* Out of entries, allocate some more. */ 508104476Ssam if (i == crypto_drivers_num) { 509104476Ssam /* Be careful about wrap-around. */ 510104476Ssam if (2 * crypto_drivers_num <= crypto_drivers_num) { 511104476Ssam CRYPTO_DRIVER_UNLOCK(); 512104476Ssam printf("crypto: driver count wraparound!\n"); 513104476Ssam return -1; 514104476Ssam } 515104476Ssam 516104476Ssam newdrv = malloc(2 * crypto_drivers_num * 517104476Ssam sizeof(struct cryptocap), M_CRYPTO_DATA, M_NOWAIT|M_ZERO); 518104476Ssam if (newdrv == NULL) { 519104476Ssam CRYPTO_DRIVER_UNLOCK(); 520104476Ssam printf("crypto: no space to expand driver table!\n"); 521104476Ssam return -1; 522104476Ssam } 523104476Ssam 524104476Ssam bcopy(crypto_drivers, newdrv, 525104476Ssam crypto_drivers_num * sizeof(struct cryptocap)); 526104476Ssam 527104476Ssam crypto_drivers_num *= 2; 528104476Ssam 529104476Ssam free(crypto_drivers, M_CRYPTO_DATA); 530104476Ssam crypto_drivers = newdrv; 531104476Ssam } 532104476Ssam 533104476Ssam /* NB: state is zero'd on free */ 534104476Ssam crypto_drivers[i].cc_sessions = 1; /* Mark */ 535167755Ssam crypto_drivers[i].cc_dev = dev; 536104476Ssam crypto_drivers[i].cc_flags = flags; 537104476Ssam if (bootverbose) 538167755Ssam printf("crypto: assign %s driver id %u, flags %u\n", 539167755Ssam device_get_nameunit(dev), i, flags); 540104476Ssam 541104476Ssam CRYPTO_DRIVER_UNLOCK(); 542104476Ssam 543104476Ssam return i; 544104476Ssam} 545104476Ssam 546167755Ssam/* 547167755Ssam * Lookup a driver by name. We match against the full device 548167755Ssam * name and unit, and against just the name. The latter gives 549167755Ssam * us a simple widlcarding by device name. On success return the 550167755Ssam * driver/hardware identifier; otherwise return -1. 551167755Ssam */ 552167755Ssamint 553167755Ssamcrypto_find_driver(const char *match) 554104476Ssam{ 555167755Ssam int i, len = strlen(match); 556167755Ssam 557167755Ssam CRYPTO_DRIVER_LOCK(); 558167755Ssam for (i = 0; i < crypto_drivers_num; i++) { 559167755Ssam device_t dev = crypto_drivers[i].cc_dev; 560167755Ssam if (dev == NULL || 561167755Ssam (crypto_drivers[i].cc_flags & CRYPTOCAP_F_CLEANUP)) 562167755Ssam continue; 563167755Ssam if (strncmp(match, device_get_nameunit(dev), len) == 0 || 564167755Ssam strncmp(match, device_get_name(dev), len) == 0) 565167755Ssam break; 566167755Ssam } 567167755Ssam CRYPTO_DRIVER_UNLOCK(); 568167755Ssam return i < crypto_drivers_num ? i : -1; 569104476Ssam} 570104476Ssam 571104476Ssam/* 572167755Ssam * Return the device_t for the specified driver or NULL 573167755Ssam * if the driver identifier is invalid. 574167755Ssam */ 575167755Ssamdevice_t 576167755Ssamcrypto_find_device_byhid(int hid) 577167755Ssam{ 578167755Ssam struct cryptocap *cap = crypto_checkdriver(hid); 579167755Ssam return cap != NULL ? cap->cc_dev : NULL; 580167755Ssam} 581167755Ssam 582167755Ssam/* 583167755Ssam * Return the device/driver capabilities. 584167755Ssam */ 585167755Ssamint 586167755Ssamcrypto_getcaps(int hid) 587167755Ssam{ 588167755Ssam struct cryptocap *cap = crypto_checkdriver(hid); 589167755Ssam return cap != NULL ? cap->cc_flags : 0; 590167755Ssam} 591167755Ssam 592167755Ssam/* 593104476Ssam * Register support for a key-related algorithm. This routine 594104476Ssam * is called once for each algorithm supported a driver. 595104476Ssam */ 596104476Ssamint 597167755Ssamcrypto_kregister(u_int32_t driverid, int kalg, u_int32_t flags) 598104476Ssam{ 599104476Ssam struct cryptocap *cap; 600104476Ssam int err; 601104476Ssam 602104476Ssam CRYPTO_DRIVER_LOCK(); 603104476Ssam 604104476Ssam cap = crypto_checkdriver(driverid); 605104476Ssam if (cap != NULL && 606104476Ssam (CRK_ALGORITM_MIN <= kalg && kalg <= CRK_ALGORITHM_MAX)) { 607104476Ssam /* 608104476Ssam * XXX Do some performance testing to determine placing. 609104476Ssam * XXX We probably need an auxiliary data structure that 610104476Ssam * XXX describes relative performances. 611104476Ssam */ 612104476Ssam 613104476Ssam cap->cc_kalg[kalg] = flags | CRYPTO_ALG_FLAG_SUPPORTED; 614104476Ssam if (bootverbose) 615167755Ssam printf("crypto: %s registers key alg %u flags %u\n" 616167755Ssam , device_get_nameunit(cap->cc_dev) 617104476Ssam , kalg 618104476Ssam , flags 619104476Ssam ); 620104476Ssam err = 0; 621104476Ssam } else 622104476Ssam err = EINVAL; 623104476Ssam 624104476Ssam CRYPTO_DRIVER_UNLOCK(); 625104476Ssam return err; 626104476Ssam} 627104476Ssam 628104476Ssam/* 629104476Ssam * Register support for a non-key-related algorithm. This routine 630104476Ssam * is called once for each such algorithm supported by a driver. 631104476Ssam */ 632104476Ssamint 633104476Ssamcrypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen, 634167755Ssam u_int32_t flags) 635104476Ssam{ 636104476Ssam struct cryptocap *cap; 637104476Ssam int err; 638104476Ssam 639104476Ssam CRYPTO_DRIVER_LOCK(); 640104476Ssam 641104476Ssam cap = crypto_checkdriver(driverid); 642104476Ssam /* NB: algorithms are in the range [1..max] */ 643104476Ssam if (cap != NULL && 644104476Ssam (CRYPTO_ALGORITHM_MIN <= alg && alg <= CRYPTO_ALGORITHM_MAX)) { 645104476Ssam /* 646104476Ssam * XXX Do some performance testing to determine placing. 647104476Ssam * XXX We probably need an auxiliary data structure that 648104476Ssam * XXX describes relative performances. 649104476Ssam */ 650104476Ssam 651104476Ssam cap->cc_alg[alg] = flags | CRYPTO_ALG_FLAG_SUPPORTED; 652104476Ssam cap->cc_max_op_len[alg] = maxoplen; 653104476Ssam if (bootverbose) 654167755Ssam printf("crypto: %s registers alg %u flags %u maxoplen %u\n" 655167755Ssam , device_get_nameunit(cap->cc_dev) 656104476Ssam , alg 657104476Ssam , flags 658104476Ssam , maxoplen 659104476Ssam ); 660167755Ssam cap->cc_sessions = 0; /* Unmark */ 661104476Ssam err = 0; 662104476Ssam } else 663104476Ssam err = EINVAL; 664104476Ssam 665104476Ssam CRYPTO_DRIVER_UNLOCK(); 666104476Ssam return err; 667104476Ssam} 668104476Ssam 669167755Ssamstatic void 670167755Ssamdriver_finis(struct cryptocap *cap) 671167755Ssam{ 672167755Ssam u_int32_t ses, kops; 673167755Ssam 674167755Ssam CRYPTO_DRIVER_ASSERT(); 675167755Ssam 676167755Ssam ses = cap->cc_sessions; 677167755Ssam kops = cap->cc_koperations; 678167755Ssam bzero(cap, sizeof(*cap)); 679167755Ssam if (ses != 0 || kops != 0) { 680167755Ssam /* 681167755Ssam * If there are pending sessions, 682167755Ssam * just mark as invalid. 683167755Ssam */ 684167755Ssam cap->cc_flags |= CRYPTOCAP_F_CLEANUP; 685167755Ssam cap->cc_sessions = ses; 686167755Ssam cap->cc_koperations = kops; 687167755Ssam } 688167755Ssam} 689167755Ssam 690104476Ssam/* 691104476Ssam * Unregister a crypto driver. If there are pending sessions using it, 692104476Ssam * leave enough information around so that subsequent calls using those 693104476Ssam * sessions will correctly detect the driver has been unregistered and 694104476Ssam * reroute requests. 695104476Ssam */ 696104476Ssamint 697104476Ssamcrypto_unregister(u_int32_t driverid, int alg) 698104476Ssam{ 699158702Spjd struct cryptocap *cap; 700104476Ssam int i, err; 701104476Ssam 702104476Ssam CRYPTO_DRIVER_LOCK(); 703104476Ssam cap = crypto_checkdriver(driverid); 704104476Ssam if (cap != NULL && 705104476Ssam (CRYPTO_ALGORITHM_MIN <= alg && alg <= CRYPTO_ALGORITHM_MAX) && 706104476Ssam cap->cc_alg[alg] != 0) { 707104476Ssam cap->cc_alg[alg] = 0; 708104476Ssam cap->cc_max_op_len[alg] = 0; 709104476Ssam 710104476Ssam /* Was this the last algorithm ? */ 711104476Ssam for (i = 1; i <= CRYPTO_ALGORITHM_MAX; i++) 712104476Ssam if (cap->cc_alg[i] != 0) 713104476Ssam break; 714104476Ssam 715167755Ssam if (i == CRYPTO_ALGORITHM_MAX + 1) 716167755Ssam driver_finis(cap); 717104476Ssam err = 0; 718104476Ssam } else 719104476Ssam err = EINVAL; 720167755Ssam CRYPTO_DRIVER_UNLOCK(); 721104476Ssam 722104476Ssam return err; 723104476Ssam} 724104476Ssam 725104476Ssam/* 726104476Ssam * Unregister all algorithms associated with a crypto driver. 727104476Ssam * If there are pending sessions using it, leave enough information 728104476Ssam * around so that subsequent calls using those sessions will 729104476Ssam * correctly detect the driver has been unregistered and reroute 730104476Ssam * requests. 731104476Ssam */ 732104476Ssamint 733104476Ssamcrypto_unregister_all(u_int32_t driverid) 734104476Ssam{ 735158702Spjd struct cryptocap *cap; 736167755Ssam int err; 737104476Ssam 738104476Ssam CRYPTO_DRIVER_LOCK(); 739104476Ssam cap = crypto_checkdriver(driverid); 740104476Ssam if (cap != NULL) { 741167755Ssam driver_finis(cap); 742104476Ssam err = 0; 743104476Ssam } else 744104476Ssam err = EINVAL; 745167755Ssam CRYPTO_DRIVER_UNLOCK(); 746104476Ssam 747104476Ssam return err; 748104476Ssam} 749104476Ssam 750104476Ssam/* 751104476Ssam * Clear blockage on a driver. The what parameter indicates whether 752104476Ssam * the driver is now ready for cryptop's and/or cryptokop's. 753104476Ssam */ 754104476Ssamint 755104476Ssamcrypto_unblock(u_int32_t driverid, int what) 756104476Ssam{ 757104476Ssam struct cryptocap *cap; 758158827Spjd int err; 759104476Ssam 760104476Ssam CRYPTO_Q_LOCK(); 761104476Ssam cap = crypto_checkdriver(driverid); 762104476Ssam if (cap != NULL) { 763158827Spjd if (what & CRYPTO_SYMQ) 764104476Ssam cap->cc_qblocked = 0; 765158827Spjd if (what & CRYPTO_ASYMQ) 766104476Ssam cap->cc_kqblocked = 0; 767158827Spjd if (crp_sleep) 768104628Ssam wakeup_one(&crp_q); 769104476Ssam err = 0; 770104476Ssam } else 771104476Ssam err = EINVAL; 772104476Ssam CRYPTO_Q_UNLOCK(); 773104476Ssam 774104476Ssam return err; 775104476Ssam} 776104476Ssam 777104476Ssam/* 778104476Ssam * Add a crypto request to a queue, to be processed by the kernel thread. 779104476Ssam */ 780104476Ssamint 781104476Ssamcrypto_dispatch(struct cryptop *crp) 782104476Ssam{ 783158702Spjd struct cryptocap *cap; 784158702Spjd u_int32_t hid; 785158702Spjd int result; 786104476Ssam 787108587Ssam cryptostats.cs_ops++; 788108587Ssam 789108587Ssam#ifdef CRYPTO_TIMING 790108587Ssam if (crypto_timing) 791108587Ssam binuptime(&crp->crp_tstamp); 792108587Ssam#endif 793108587Ssam 794158702Spjd hid = CRYPTO_SESID2HID(crp->crp_sid); 795158702Spjd 796111297Ssam if ((crp->crp_flags & CRYPTO_F_BATCH) == 0) { 797111297Ssam /* 798111297Ssam * Caller marked the request to be processed 799111297Ssam * immediately; dispatch it directly to the 800111297Ssam * driver unless the driver is currently blocked. 801111297Ssam */ 802111297Ssam cap = crypto_checkdriver(hid); 803158702Spjd /* Driver cannot disappeared when there is an active session. */ 804158702Spjd KASSERT(cap != NULL, ("%s: Driver disappeared.", __func__)); 805158702Spjd if (!cap->cc_qblocked) { 806158702Spjd result = crypto_invoke(cap, crp, 0); 807158702Spjd if (result != ERESTART) 808158702Spjd return (result); 809158823Spjd /* 810158823Spjd * The driver ran out of resources, put the request on 811158823Spjd * the queue. 812158823Spjd */ 813108990Ssam } 814108990Ssam } 815158702Spjd CRYPTO_Q_LOCK(); 816158827Spjd TAILQ_INSERT_TAIL(&crp_q, crp, crp_next); 817158827Spjd if (crp_sleep) 818157665Spjd wakeup_one(&crp_q); 819115746Ssam CRYPTO_Q_UNLOCK(); 820158702Spjd return 0; 821104476Ssam} 822104476Ssam 823104476Ssam/* 824104476Ssam * Add an asymetric crypto request to a queue, 825104476Ssam * to be processed by the kernel thread. 826104476Ssam */ 827104476Ssamint 828104476Ssamcrypto_kdispatch(struct cryptkop *krp) 829104476Ssam{ 830167755Ssam int error; 831104476Ssam 832108587Ssam cryptostats.cs_kops++; 833108587Ssam 834167755Ssam error = crypto_kinvoke(krp, krp->krp_crid); 835167755Ssam if (error == ERESTART) { 836167755Ssam CRYPTO_Q_LOCK(); 837167755Ssam TAILQ_INSERT_TAIL(&crp_kq, krp, krp_next); 838167755Ssam if (crp_sleep) 839167755Ssam wakeup_one(&crp_q); 840167755Ssam CRYPTO_Q_UNLOCK(); 841167755Ssam error = 0; 842167755Ssam } 843167755Ssam return error; 844167755Ssam} 845104476Ssam 846167755Ssam/* 847167755Ssam * Verify a driver is suitable for the specified operation. 848167755Ssam */ 849167755Ssamstatic __inline int 850167755Ssamkdriver_suitable(const struct cryptocap *cap, const struct cryptkop *krp) 851167755Ssam{ 852167755Ssam return (cap->cc_kalg[krp->krp_op] & CRYPTO_ALG_FLAG_SUPPORTED) != 0; 853104476Ssam} 854104476Ssam 855104476Ssam/* 856167755Ssam * Select a driver for an asym operation. The driver must 857167755Ssam * support the necessary algorithm. The caller can constrain 858167755Ssam * which device is selected with the flags parameter. The 859167755Ssam * algorithm we use here is pretty stupid; just use the first 860167755Ssam * driver that supports the algorithms we need. If there are 861167755Ssam * multiple suitable drivers we choose the driver with the 862167755Ssam * fewest active operations. We prefer hardware-backed 863167755Ssam * drivers to software ones when either may be used. 864104476Ssam */ 865167755Ssamstatic struct cryptocap * 866167755Ssamcrypto_select_kdriver(const struct cryptkop *krp, int flags) 867167755Ssam{ 868167755Ssam struct cryptocap *cap, *best, *blocked; 869167755Ssam int match, hid; 870167755Ssam 871167755Ssam CRYPTO_DRIVER_ASSERT(); 872167755Ssam 873167755Ssam /* 874167755Ssam * Look first for hardware crypto devices if permitted. 875167755Ssam */ 876167755Ssam if (flags & CRYPTOCAP_F_HARDWARE) 877167755Ssam match = CRYPTOCAP_F_HARDWARE; 878167755Ssam else 879167755Ssam match = CRYPTOCAP_F_SOFTWARE; 880167755Ssam best = NULL; 881167755Ssam blocked = NULL; 882167755Ssamagain: 883167755Ssam for (hid = 0; hid < crypto_drivers_num; hid++) { 884167755Ssam cap = &crypto_drivers[hid]; 885167755Ssam /* 886167755Ssam * If it's not initialized, is in the process of 887167755Ssam * going away, or is not appropriate (hardware 888167755Ssam * or software based on match), then skip. 889167755Ssam */ 890167755Ssam if (cap->cc_dev == NULL || 891167755Ssam (cap->cc_flags & CRYPTOCAP_F_CLEANUP) || 892167755Ssam (cap->cc_flags & match) == 0) 893167755Ssam continue; 894167755Ssam 895167755Ssam /* verify all the algorithms are supported. */ 896167755Ssam if (kdriver_suitable(cap, krp)) { 897167755Ssam if (best == NULL || 898167755Ssam cap->cc_koperations < best->cc_koperations) 899167755Ssam best = cap; 900167755Ssam } 901167755Ssam } 902167755Ssam if (best != NULL) 903167755Ssam return best; 904167755Ssam if (match == CRYPTOCAP_F_HARDWARE && (flags & CRYPTOCAP_F_SOFTWARE)) { 905167755Ssam /* sort of an Algol 68-style for loop */ 906167755Ssam match = CRYPTOCAP_F_SOFTWARE; 907167755Ssam goto again; 908167755Ssam } 909167755Ssam return best; 910167755Ssam} 911167755Ssam 912167755Ssam/* 913167755Ssam * Dispatch an assymetric crypto request. 914167755Ssam */ 915104476Ssamstatic int 916167755Ssamcrypto_kinvoke(struct cryptkop *krp, int crid) 917104476Ssam{ 918158702Spjd struct cryptocap *cap = NULL; 919167755Ssam int error; 920104476Ssam 921158702Spjd KASSERT(krp != NULL, ("%s: krp == NULL", __func__)); 922158702Spjd KASSERT(krp->krp_callback != NULL, 923158702Spjd ("%s: krp->crp_callback == NULL", __func__)); 924104476Ssam 925158702Spjd CRYPTO_DRIVER_LOCK(); 926167755Ssam if ((crid & (CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE)) == 0) { 927167755Ssam cap = crypto_checkdriver(crid); 928167755Ssam if (cap != NULL) { 929167755Ssam /* 930167755Ssam * Driver present, it must support the necessary 931167755Ssam * algorithm and, if s/w drivers are excluded, 932167755Ssam * it must be registered as hardware-backed. 933167755Ssam */ 934167755Ssam if (!kdriver_suitable(cap, krp) || 935167755Ssam (!crypto_devallowsoft && 936167755Ssam (cap->cc_flags & CRYPTOCAP_F_HARDWARE) == 0)) 937167755Ssam cap = NULL; 938158702Spjd } 939167755Ssam } else { 940167755Ssam /* 941167755Ssam * No requested driver; select based on crid flags. 942167755Ssam */ 943167755Ssam if (!crypto_devallowsoft) /* NB: disallow s/w drivers */ 944167755Ssam crid &= ~CRYPTOCAP_F_SOFTWARE; 945167755Ssam cap = crypto_select_kdriver(krp, crid); 946104476Ssam } 947167755Ssam if (cap != NULL && !cap->cc_kqblocked) { 948167755Ssam krp->krp_hid = cap - crypto_drivers; 949158702Spjd cap->cc_koperations++; 950158702Spjd CRYPTO_DRIVER_UNLOCK(); 951167755Ssam error = CRYPTODEV_KPROCESS(cap->cc_dev, krp, 0); 952158702Spjd CRYPTO_DRIVER_LOCK(); 953158702Spjd if (error == ERESTART) { 954158702Spjd cap->cc_koperations--; 955158702Spjd CRYPTO_DRIVER_UNLOCK(); 956158702Spjd return (error); 957158702Spjd } 958158702Spjd } else { 959167755Ssam /* 960167755Ssam * NB: cap is !NULL if device is blocked; in 961167755Ssam * that case return ERESTART so the operation 962167755Ssam * is resubmitted if possible. 963167755Ssam */ 964167755Ssam error = (cap == NULL) ? ENODEV : ERESTART; 965158702Spjd } 966158702Spjd CRYPTO_DRIVER_UNLOCK(); 967104476Ssam 968104476Ssam if (error) { 969104476Ssam krp->krp_status = error; 970104628Ssam crypto_kdone(krp); 971104476Ssam } 972104476Ssam return 0; 973104476Ssam} 974104476Ssam 975108587Ssam#ifdef CRYPTO_TIMING 976108587Ssamstatic void 977108587Ssamcrypto_tstat(struct cryptotstat *ts, struct bintime *bt) 978108587Ssam{ 979108587Ssam struct bintime now, delta; 980108587Ssam struct timespec t; 981108587Ssam uint64_t u; 982108587Ssam 983108587Ssam binuptime(&now); 984108587Ssam u = now.frac; 985108587Ssam delta.frac = now.frac - bt->frac; 986108587Ssam delta.sec = now.sec - bt->sec; 987108587Ssam if (u < delta.frac) 988108587Ssam delta.sec--; 989108587Ssam bintime2timespec(&delta, &t); 990108587Ssam timespecadd(&ts->acc, &t); 991108587Ssam if (timespeccmp(&t, &ts->min, <)) 992108587Ssam ts->min = t; 993108587Ssam if (timespeccmp(&t, &ts->max, >)) 994108587Ssam ts->max = t; 995108587Ssam ts->count++; 996108587Ssam 997108587Ssam *bt = now; 998108587Ssam} 999108587Ssam#endif 1000108587Ssam 1001104476Ssam/* 1002104476Ssam * Dispatch a crypto request to the appropriate crypto devices. 1003104476Ssam */ 1004104476Ssamstatic int 1005158702Spjdcrypto_invoke(struct cryptocap *cap, struct cryptop *crp, int hint) 1006104476Ssam{ 1007104476Ssam 1008158702Spjd KASSERT(crp != NULL, ("%s: crp == NULL", __func__)); 1009158702Spjd KASSERT(crp->crp_callback != NULL, 1010158702Spjd ("%s: crp->crp_callback == NULL", __func__)); 1011158702Spjd KASSERT(crp->crp_desc != NULL, ("%s: crp->crp_desc == NULL", __func__)); 1012158702Spjd 1013108587Ssam#ifdef CRYPTO_TIMING 1014108587Ssam if (crypto_timing) 1015108587Ssam crypto_tstat(&cryptostats.cs_invoke, &crp->crp_tstamp); 1016108587Ssam#endif 1017158702Spjd if (cap->cc_flags & CRYPTOCAP_F_CLEANUP) { 1018104476Ssam struct cryptodesc *crd; 1019104476Ssam u_int64_t nid; 1020104476Ssam 1021104476Ssam /* 1022104476Ssam * Driver has unregistered; migrate the session and return 1023104476Ssam * an error to the caller so they'll resubmit the op. 1024158702Spjd * 1025158702Spjd * XXX: What if there are more already queued requests for this 1026158702Spjd * session? 1027104476Ssam */ 1028158702Spjd crypto_freesession(crp->crp_sid); 1029158702Spjd 1030104476Ssam for (crd = crp->crp_desc; crd->crd_next; crd = crd->crd_next) 1031104476Ssam crd->CRD_INI.cri_next = &(crd->crd_next->CRD_INI); 1032104476Ssam 1033167755Ssam /* XXX propagate flags from initial session? */ 1034167755Ssam if (crypto_newsession(&nid, &(crp->crp_desc->CRD_INI), 1035167755Ssam CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE) == 0) 1036104476Ssam crp->crp_sid = nid; 1037104476Ssam 1038104476Ssam crp->crp_etype = EAGAIN; 1039104628Ssam crypto_done(crp); 1040104476Ssam return 0; 1041104476Ssam } else { 1042104476Ssam /* 1043104476Ssam * Invoke the driver to process the request. 1044104476Ssam */ 1045167755Ssam return CRYPTODEV_PROCESS(cap->cc_dev, crp, hint); 1046104476Ssam } 1047104476Ssam} 1048104476Ssam 1049104476Ssam/* 1050104476Ssam * Release a set of crypto descriptors. 1051104476Ssam */ 1052104476Ssamvoid 1053104476Ssamcrypto_freereq(struct cryptop *crp) 1054104476Ssam{ 1055104476Ssam struct cryptodesc *crd; 1056104476Ssam 1057104476Ssam if (crp == NULL) 1058104476Ssam return; 1059104476Ssam 1060159346Spjd#ifdef DIAGNOSTIC 1061159346Spjd { 1062159346Spjd struct cryptop *crp2; 1063159346Spjd 1064159346Spjd CRYPTO_Q_LOCK(); 1065159346Spjd TAILQ_FOREACH(crp2, &crp_q, crp_next) { 1066159346Spjd KASSERT(crp2 != crp, 1067159346Spjd ("Freeing cryptop from the crypto queue (%p).", 1068159346Spjd crp)); 1069159346Spjd } 1070159346Spjd CRYPTO_Q_UNLOCK(); 1071159346Spjd CRYPTO_RETQ_LOCK(); 1072159346Spjd TAILQ_FOREACH(crp2, &crp_ret_q, crp_next) { 1073159346Spjd KASSERT(crp2 != crp, 1074159346Spjd ("Freeing cryptop from the return queue (%p).", 1075159346Spjd crp)); 1076159346Spjd } 1077159346Spjd CRYPTO_RETQ_UNLOCK(); 1078159346Spjd } 1079159346Spjd#endif 1080159346Spjd 1081104476Ssam while ((crd = crp->crp_desc) != NULL) { 1082104476Ssam crp->crp_desc = crd->crd_next; 1083104476Ssam uma_zfree(cryptodesc_zone, crd); 1084104476Ssam } 1085104476Ssam uma_zfree(cryptop_zone, crp); 1086104476Ssam} 1087104476Ssam 1088104476Ssam/* 1089104476Ssam * Acquire a set of crypto descriptors. 1090104476Ssam */ 1091104476Ssamstruct cryptop * 1092104476Ssamcrypto_getreq(int num) 1093104476Ssam{ 1094104476Ssam struct cryptodesc *crd; 1095104476Ssam struct cryptop *crp; 1096104476Ssam 1097108813Ssam crp = uma_zalloc(cryptop_zone, M_NOWAIT|M_ZERO); 1098104476Ssam if (crp != NULL) { 1099104476Ssam while (num--) { 1100108813Ssam crd = uma_zalloc(cryptodesc_zone, M_NOWAIT|M_ZERO); 1101104476Ssam if (crd == NULL) { 1102104476Ssam crypto_freereq(crp); 1103104476Ssam return NULL; 1104104476Ssam } 1105104476Ssam 1106104476Ssam crd->crd_next = crp->crp_desc; 1107104476Ssam crp->crp_desc = crd; 1108104476Ssam } 1109104476Ssam } 1110104476Ssam return crp; 1111104476Ssam} 1112104476Ssam 1113104476Ssam/* 1114104476Ssam * Invoke the callback on behalf of the driver. 1115104476Ssam */ 1116104476Ssamvoid 1117104476Ssamcrypto_done(struct cryptop *crp) 1118104476Ssam{ 1119115746Ssam KASSERT((crp->crp_flags & CRYPTO_F_DONE) == 0, 1120115746Ssam ("crypto_done: op already done, flags 0x%x", crp->crp_flags)); 1121115746Ssam crp->crp_flags |= CRYPTO_F_DONE; 1122108587Ssam if (crp->crp_etype != 0) 1123108587Ssam cryptostats.cs_errs++; 1124108587Ssam#ifdef CRYPTO_TIMING 1125108587Ssam if (crypto_timing) 1126108587Ssam crypto_tstat(&cryptostats.cs_done, &crp->crp_tstamp); 1127108587Ssam#endif 1128117058Ssam /* 1129117058Ssam * CBIMM means unconditionally do the callback immediately; 1130117058Ssam * CBIFSYNC means do the callback immediately only if the 1131117058Ssam * operation was done synchronously. Both are used to avoid 1132117058Ssam * doing extraneous context switches; the latter is mostly 1133117058Ssam * used with the software crypto driver. 1134117058Ssam */ 1135117058Ssam if ((crp->crp_flags & CRYPTO_F_CBIMM) || 1136117058Ssam ((crp->crp_flags & CRYPTO_F_CBIFSYNC) && 1137117058Ssam (CRYPTO_SESID2CAPS(crp->crp_sid) & CRYPTOCAP_F_SYNC))) { 1138111297Ssam /* 1139111297Ssam * Do the callback directly. This is ok when the 1140111297Ssam * callback routine does very little (e.g. the 1141111297Ssam * /dev/crypto callback method just does a wakeup). 1142111297Ssam */ 1143111297Ssam#ifdef CRYPTO_TIMING 1144111297Ssam if (crypto_timing) { 1145111297Ssam /* 1146111297Ssam * NB: We must copy the timestamp before 1147111297Ssam * doing the callback as the cryptop is 1148111297Ssam * likely to be reclaimed. 1149111297Ssam */ 1150111297Ssam struct bintime t = crp->crp_tstamp; 1151111297Ssam crypto_tstat(&cryptostats.cs_cb, &t); 1152111297Ssam crp->crp_callback(crp); 1153111297Ssam crypto_tstat(&cryptostats.cs_finis, &t); 1154111297Ssam } else 1155111297Ssam#endif 1156111297Ssam crp->crp_callback(crp); 1157111297Ssam } else { 1158111297Ssam /* 1159111297Ssam * Normal case; queue the callback for the thread. 1160111297Ssam */ 1161111297Ssam CRYPTO_RETQ_LOCK(); 1162158826Spjd if (CRYPTO_RETQ_EMPTY()) 1163158702Spjd wakeup_one(&crp_ret_q); /* shared wait channel */ 1164111297Ssam TAILQ_INSERT_TAIL(&crp_ret_q, crp, crp_next); 1165111297Ssam CRYPTO_RETQ_UNLOCK(); 1166111297Ssam } 1167104476Ssam} 1168104476Ssam 1169104476Ssam/* 1170104476Ssam * Invoke the callback on behalf of the driver. 1171104476Ssam */ 1172104476Ssamvoid 1173104476Ssamcrypto_kdone(struct cryptkop *krp) 1174104476Ssam{ 1175158702Spjd struct cryptocap *cap; 1176104476Ssam 1177108587Ssam if (krp->krp_status != 0) 1178108587Ssam cryptostats.cs_kerrs++; 1179158702Spjd CRYPTO_DRIVER_LOCK(); 1180158702Spjd /* XXX: What if driver is loaded in the meantime? */ 1181158702Spjd if (krp->krp_hid < crypto_drivers_num) { 1182158702Spjd cap = &crypto_drivers[krp->krp_hid]; 1183158702Spjd cap->cc_koperations--; 1184158702Spjd KASSERT(cap->cc_koperations >= 0, ("cc_koperations < 0")); 1185158702Spjd if (cap->cc_flags & CRYPTOCAP_F_CLEANUP) 1186158702Spjd crypto_remove(cap); 1187158702Spjd } 1188158702Spjd CRYPTO_DRIVER_UNLOCK(); 1189104476Ssam CRYPTO_RETQ_LOCK(); 1190158826Spjd if (CRYPTO_RETQ_EMPTY()) 1191158702Spjd wakeup_one(&crp_ret_q); /* shared wait channel */ 1192104476Ssam TAILQ_INSERT_TAIL(&crp_ret_kq, krp, krp_next); 1193104628Ssam CRYPTO_RETQ_UNLOCK(); 1194104476Ssam} 1195104476Ssam 1196104476Ssamint 1197104476Ssamcrypto_getfeat(int *featp) 1198104476Ssam{ 1199104476Ssam int hid, kalg, feat = 0; 1200104476Ssam 1201104476Ssam CRYPTO_DRIVER_LOCK(); 1202104476Ssam for (hid = 0; hid < crypto_drivers_num; hid++) { 1203167755Ssam const struct cryptocap *cap = &crypto_drivers[hid]; 1204167755Ssam 1205167755Ssam if ((cap->cc_flags & CRYPTOCAP_F_SOFTWARE) && 1206104476Ssam !crypto_devallowsoft) { 1207104476Ssam continue; 1208104476Ssam } 1209104476Ssam for (kalg = 0; kalg < CRK_ALGORITHM_MAX; kalg++) 1210167755Ssam if (cap->cc_kalg[kalg] & CRYPTO_ALG_FLAG_SUPPORTED) 1211104476Ssam feat |= 1 << kalg; 1212104476Ssam } 1213104476Ssam CRYPTO_DRIVER_UNLOCK(); 1214104476Ssam *featp = feat; 1215104476Ssam return (0); 1216104476Ssam} 1217104476Ssam 1218108588Ssam/* 1219108588Ssam * Terminate a thread at module unload. The process that 1220108588Ssam * initiated this is waiting for us to signal that we're gone; 1221108588Ssam * wake it up and exit. We use the driver table lock to insure 1222108588Ssam * we don't do the wakeup before they're waiting. There is no 1223108588Ssam * race here because the waiter sleeps on the proc lock for the 1224108588Ssam * thread so it gets notified at the right time because of an 1225108588Ssam * extra wakeup that's done in exit1(). 1226108588Ssam */ 1227104476Ssamstatic void 1228108588Ssamcrypto_finis(void *chan) 1229104476Ssam{ 1230108588Ssam CRYPTO_DRIVER_LOCK(); 1231108588Ssam wakeup_one(chan); 1232108588Ssam CRYPTO_DRIVER_UNLOCK(); 1233172836Sjulian kproc_exit(0); 1234104476Ssam} 1235104476Ssam 1236104476Ssam/* 1237104628Ssam * Crypto thread, dispatches crypto requests. 1238104476Ssam */ 1239104476Ssamstatic void 1240104476Ssamcrypto_proc(void) 1241104476Ssam{ 1242104628Ssam struct cryptop *crp, *submit; 1243104628Ssam struct cryptkop *krp; 1244104476Ssam struct cryptocap *cap; 1245158702Spjd u_int32_t hid; 1246104476Ssam int result, hint; 1247104476Ssam 1248208834Skib#if defined(__i386__) || defined(__amd64__) 1249208834Skib fpu_kern_thread(FPU_KERN_NORMAL); 1250208834Skib#endif 1251208834Skib 1252104628Ssam CRYPTO_Q_LOCK(); 1253104476Ssam for (;;) { 1254104476Ssam /* 1255104476Ssam * Find the first element in the queue that can be 1256104476Ssam * processed and look-ahead to see if multiple ops 1257104476Ssam * are ready for the same driver. 1258104476Ssam */ 1259104476Ssam submit = NULL; 1260104476Ssam hint = 0; 1261104476Ssam TAILQ_FOREACH(crp, &crp_q, crp_next) { 1262158702Spjd hid = CRYPTO_SESID2HID(crp->crp_sid); 1263104476Ssam cap = crypto_checkdriver(hid); 1264158702Spjd /* 1265158702Spjd * Driver cannot disappeared when there is an active 1266158702Spjd * session. 1267158702Spjd */ 1268158716Spjd KASSERT(cap != NULL, ("%s:%u Driver disappeared.", 1269158716Spjd __func__, __LINE__)); 1270167755Ssam if (cap == NULL || cap->cc_dev == NULL) { 1271104476Ssam /* Op needs to be migrated, process it. */ 1272104476Ssam if (submit == NULL) 1273104476Ssam submit = crp; 1274104476Ssam break; 1275104476Ssam } 1276104476Ssam if (!cap->cc_qblocked) { 1277104476Ssam if (submit != NULL) { 1278104476Ssam /* 1279104476Ssam * We stop on finding another op, 1280104476Ssam * regardless whether its for the same 1281104476Ssam * driver or not. We could keep 1282104476Ssam * searching the queue but it might be 1283104476Ssam * better to just use a per-driver 1284104476Ssam * queue instead. 1285104476Ssam */ 1286116924Ssam if (CRYPTO_SESID2HID(submit->crp_sid) == hid) 1287104476Ssam hint = CRYPTO_HINT_MORE; 1288104476Ssam break; 1289104476Ssam } else { 1290104476Ssam submit = crp; 1291111297Ssam if ((submit->crp_flags & CRYPTO_F_BATCH) == 0) 1292104476Ssam break; 1293104476Ssam /* keep scanning for more are q'd */ 1294104476Ssam } 1295104476Ssam } 1296104476Ssam } 1297104476Ssam if (submit != NULL) { 1298104476Ssam TAILQ_REMOVE(&crp_q, submit, crp_next); 1299158702Spjd hid = CRYPTO_SESID2HID(submit->crp_sid); 1300158702Spjd cap = crypto_checkdriver(hid); 1301158716Spjd KASSERT(cap != NULL, ("%s:%u Driver disappeared.", 1302158716Spjd __func__, __LINE__)); 1303158702Spjd result = crypto_invoke(cap, submit, hint); 1304104476Ssam if (result == ERESTART) { 1305104476Ssam /* 1306104476Ssam * The driver ran out of resources, mark the 1307104476Ssam * driver ``blocked'' for cryptop's and put 1308104476Ssam * the request back in the queue. It would 1309104476Ssam * best to put the request back where we got 1310104476Ssam * it but that's hard so for now we put it 1311104476Ssam * at the front. This should be ok; putting 1312104476Ssam * it at the end does not work. 1313104476Ssam */ 1314104476Ssam /* XXX validate sid again? */ 1315116924Ssam crypto_drivers[CRYPTO_SESID2HID(submit->crp_sid)].cc_qblocked = 1; 1316104476Ssam TAILQ_INSERT_HEAD(&crp_q, submit, crp_next); 1317108587Ssam cryptostats.cs_blocks++; 1318104476Ssam } 1319104476Ssam } 1320104476Ssam 1321104476Ssam /* As above, but for key ops */ 1322104476Ssam TAILQ_FOREACH(krp, &crp_kq, krp_next) { 1323104476Ssam cap = crypto_checkdriver(krp->krp_hid); 1324167755Ssam if (cap == NULL || cap->cc_dev == NULL) { 1325167755Ssam /* 1326167755Ssam * Operation needs to be migrated, invalidate 1327167755Ssam * the assigned device so it will reselect a 1328167755Ssam * new one below. Propagate the original 1329167755Ssam * crid selection flags if supplied. 1330167755Ssam */ 1331167755Ssam krp->krp_hid = krp->krp_crid & 1332167755Ssam (CRYPTOCAP_F_SOFTWARE|CRYPTOCAP_F_HARDWARE); 1333167755Ssam if (krp->krp_hid == 0) 1334167755Ssam krp->krp_hid = 1335167755Ssam CRYPTOCAP_F_SOFTWARE|CRYPTOCAP_F_HARDWARE; 1336104476Ssam break; 1337104476Ssam } 1338104476Ssam if (!cap->cc_kqblocked) 1339104476Ssam break; 1340104476Ssam } 1341104476Ssam if (krp != NULL) { 1342104476Ssam TAILQ_REMOVE(&crp_kq, krp, krp_next); 1343167755Ssam result = crypto_kinvoke(krp, krp->krp_hid); 1344104476Ssam if (result == ERESTART) { 1345104476Ssam /* 1346104476Ssam * The driver ran out of resources, mark the 1347104476Ssam * driver ``blocked'' for cryptkop's and put 1348104476Ssam * the request back in the queue. It would 1349104476Ssam * best to put the request back where we got 1350104476Ssam * it but that's hard so for now we put it 1351104476Ssam * at the front. This should be ok; putting 1352104476Ssam * it at the end does not work. 1353104476Ssam */ 1354104476Ssam /* XXX validate sid again? */ 1355104476Ssam crypto_drivers[krp->krp_hid].cc_kqblocked = 1; 1356104476Ssam TAILQ_INSERT_HEAD(&crp_kq, krp, krp_next); 1357108587Ssam cryptostats.cs_kblocks++; 1358104476Ssam } 1359104476Ssam } 1360104476Ssam 1361104628Ssam if (submit == NULL && krp == NULL) { 1362104476Ssam /* 1363104476Ssam * Nothing more to be processed. Sleep until we're 1364104476Ssam * woken because there are more ops to process. 1365104476Ssam * This happens either by submission or by a driver 1366104476Ssam * becoming unblocked and notifying us through 1367104476Ssam * crypto_unblock. Note that when we wakeup we 1368104476Ssam * start processing each queue again from the 1369104476Ssam * front. It's not clear that it's important to 1370104476Ssam * preserve this ordering since ops may finish 1371104476Ssam * out of order if dispatched to different devices 1372104476Ssam * and some become blocked while others do not. 1373104476Ssam */ 1374158827Spjd crp_sleep = 1; 1375104628Ssam msleep(&crp_q, &crypto_q_mtx, PWAIT, "crypto_wait", 0); 1376158827Spjd crp_sleep = 0; 1377108588Ssam if (cryptoproc == NULL) 1378108588Ssam break; 1379108587Ssam cryptostats.cs_intrs++; 1380104476Ssam } 1381104476Ssam } 1382108588Ssam CRYPTO_Q_UNLOCK(); 1383104628Ssam 1384108588Ssam crypto_finis(&crp_q); 1385104628Ssam} 1386104628Ssam 1387104628Ssam/* 1388104628Ssam * Crypto returns thread, does callbacks for processed crypto requests. 1389104628Ssam * Callbacks are done here, rather than in the crypto drivers, because 1390104628Ssam * callbacks typically are expensive and would slow interrupt handling. 1391104628Ssam */ 1392104628Ssamstatic void 1393104628Ssamcrypto_ret_proc(void) 1394104628Ssam{ 1395104628Ssam struct cryptop *crpt; 1396104628Ssam struct cryptkop *krpt; 1397104628Ssam 1398104628Ssam CRYPTO_RETQ_LOCK(); 1399104628Ssam for (;;) { 1400104628Ssam /* Harvest return q's for completed ops */ 1401104628Ssam crpt = TAILQ_FIRST(&crp_ret_q); 1402104628Ssam if (crpt != NULL) 1403104628Ssam TAILQ_REMOVE(&crp_ret_q, crpt, crp_next); 1404104628Ssam 1405104628Ssam krpt = TAILQ_FIRST(&crp_ret_kq); 1406104628Ssam if (krpt != NULL) 1407104628Ssam TAILQ_REMOVE(&crp_ret_kq, krpt, krp_next); 1408104628Ssam 1409104628Ssam if (crpt != NULL || krpt != NULL) { 1410104628Ssam CRYPTO_RETQ_UNLOCK(); 1411104628Ssam /* 1412104628Ssam * Run callbacks unlocked. 1413104628Ssam */ 1414108587Ssam if (crpt != NULL) { 1415108587Ssam#ifdef CRYPTO_TIMING 1416108587Ssam if (crypto_timing) { 1417108587Ssam /* 1418108587Ssam * NB: We must copy the timestamp before 1419108587Ssam * doing the callback as the cryptop is 1420108587Ssam * likely to be reclaimed. 1421108587Ssam */ 1422108587Ssam struct bintime t = crpt->crp_tstamp; 1423108587Ssam crypto_tstat(&cryptostats.cs_cb, &t); 1424108587Ssam crpt->crp_callback(crpt); 1425108587Ssam crypto_tstat(&cryptostats.cs_finis, &t); 1426108587Ssam } else 1427108587Ssam#endif 1428108587Ssam crpt->crp_callback(crpt); 1429108587Ssam } 1430104628Ssam if (krpt != NULL) 1431104628Ssam krpt->krp_callback(krpt); 1432104628Ssam CRYPTO_RETQ_LOCK(); 1433104628Ssam } else { 1434104628Ssam /* 1435104628Ssam * Nothing more to be processed. Sleep until we're 1436104628Ssam * woken because there are more returns to process. 1437104628Ssam */ 1438104628Ssam msleep(&crp_ret_q, &crypto_ret_q_mtx, PWAIT, 1439104628Ssam "crypto_ret_wait", 0); 1440108588Ssam if (cryptoretproc == NULL) 1441108588Ssam break; 1442108587Ssam cryptostats.cs_rets++; 1443104628Ssam } 1444104628Ssam } 1445108588Ssam CRYPTO_RETQ_UNLOCK(); 1446108588Ssam 1447108588Ssam crypto_finis(&crp_ret_q); 1448104628Ssam} 1449167755Ssam 1450167755Ssam#ifdef DDB 1451167755Ssamstatic void 1452167755Ssamdb_show_drivers(void) 1453167755Ssam{ 1454167755Ssam int hid; 1455167755Ssam 1456167755Ssam db_printf("%12s %4s %4s %8s %2s %2s\n" 1457167755Ssam , "Device" 1458167755Ssam , "Ses" 1459167755Ssam , "Kops" 1460167755Ssam , "Flags" 1461167755Ssam , "QB" 1462167755Ssam , "KB" 1463167755Ssam ); 1464167755Ssam for (hid = 0; hid < crypto_drivers_num; hid++) { 1465167755Ssam const struct cryptocap *cap = &crypto_drivers[hid]; 1466167755Ssam if (cap->cc_dev == NULL) 1467167755Ssam continue; 1468167755Ssam db_printf("%-12s %4u %4u %08x %2u %2u\n" 1469167755Ssam , device_get_nameunit(cap->cc_dev) 1470167755Ssam , cap->cc_sessions 1471167755Ssam , cap->cc_koperations 1472167755Ssam , cap->cc_flags 1473167755Ssam , cap->cc_qblocked 1474167755Ssam , cap->cc_kqblocked 1475167755Ssam ); 1476167755Ssam } 1477167755Ssam} 1478167755Ssam 1479167755SsamDB_SHOW_COMMAND(crypto, db_show_crypto) 1480167755Ssam{ 1481167755Ssam struct cryptop *crp; 1482167755Ssam 1483167755Ssam db_show_drivers(); 1484167755Ssam db_printf("\n"); 1485167755Ssam 1486167755Ssam db_printf("%4s %8s %4s %4s %4s %4s %8s %8s\n", 1487167755Ssam "HID", "Caps", "Ilen", "Olen", "Etype", "Flags", 1488167755Ssam "Desc", "Callback"); 1489167755Ssam TAILQ_FOREACH(crp, &crp_q, crp_next) { 1490167755Ssam db_printf("%4u %08x %4u %4u %4u %04x %8p %8p\n" 1491167755Ssam , (int) CRYPTO_SESID2HID(crp->crp_sid) 1492167755Ssam , (int) CRYPTO_SESID2CAPS(crp->crp_sid) 1493167755Ssam , crp->crp_ilen, crp->crp_olen 1494167755Ssam , crp->crp_etype 1495167755Ssam , crp->crp_flags 1496167755Ssam , crp->crp_desc 1497167755Ssam , crp->crp_callback 1498167755Ssam ); 1499167755Ssam } 1500167755Ssam if (!TAILQ_EMPTY(&crp_ret_q)) { 1501167755Ssam db_printf("\n%4s %4s %4s %8s\n", 1502167755Ssam "HID", "Etype", "Flags", "Callback"); 1503167755Ssam TAILQ_FOREACH(crp, &crp_ret_q, crp_next) { 1504167755Ssam db_printf("%4u %4u %04x %8p\n" 1505167755Ssam , (int) CRYPTO_SESID2HID(crp->crp_sid) 1506167755Ssam , crp->crp_etype 1507167755Ssam , crp->crp_flags 1508167755Ssam , crp->crp_callback 1509167755Ssam ); 1510167755Ssam } 1511167755Ssam } 1512167755Ssam} 1513167755Ssam 1514167755SsamDB_SHOW_COMMAND(kcrypto, db_show_kcrypto) 1515167755Ssam{ 1516167755Ssam struct cryptkop *krp; 1517167755Ssam 1518167755Ssam db_show_drivers(); 1519167755Ssam db_printf("\n"); 1520167755Ssam 1521167755Ssam db_printf("%4s %5s %4s %4s %8s %4s %8s\n", 1522167755Ssam "Op", "Status", "#IP", "#OP", "CRID", "HID", "Callback"); 1523167755Ssam TAILQ_FOREACH(krp, &crp_kq, krp_next) { 1524167755Ssam db_printf("%4u %5u %4u %4u %08x %4u %8p\n" 1525167755Ssam , krp->krp_op 1526167755Ssam , krp->krp_status 1527167755Ssam , krp->krp_iparams, krp->krp_oparams 1528167755Ssam , krp->krp_crid, krp->krp_hid 1529167755Ssam , krp->krp_callback 1530167755Ssam ); 1531167755Ssam } 1532167755Ssam if (!TAILQ_EMPTY(&crp_ret_q)) { 1533167755Ssam db_printf("%4s %5s %8s %4s %8s\n", 1534167755Ssam "Op", "Status", "CRID", "HID", "Callback"); 1535167755Ssam TAILQ_FOREACH(krp, &crp_ret_kq, krp_next) { 1536167755Ssam db_printf("%4u %5u %08x %4u %8p\n" 1537167755Ssam , krp->krp_op 1538167755Ssam , krp->krp_status 1539167755Ssam , krp->krp_crid, krp->krp_hid 1540167755Ssam , krp->krp_callback 1541167755Ssam ); 1542167755Ssam } 1543167755Ssam } 1544167755Ssam} 1545167755Ssam#endif 1546167755Ssam 1547167755Ssamint crypto_modevent(module_t mod, int type, void *unused); 1548167755Ssam 1549167755Ssam/* 1550167755Ssam * Initialization code, both for static and dynamic loading. 1551167755Ssam * Note this is not invoked with the usual MODULE_DECLARE 1552167755Ssam * mechanism but instead is listed as a dependency by the 1553167755Ssam * cryptosoft driver. This guarantees proper ordering of 1554167755Ssam * calls on module load/unload. 1555167755Ssam */ 1556167755Ssamint 1557167755Ssamcrypto_modevent(module_t mod, int type, void *unused) 1558167755Ssam{ 1559167755Ssam int error = EINVAL; 1560167755Ssam 1561167755Ssam switch (type) { 1562167755Ssam case MOD_LOAD: 1563167755Ssam error = crypto_init(); 1564167755Ssam if (error == 0 && bootverbose) 1565167755Ssam printf("crypto: <crypto core>\n"); 1566167755Ssam break; 1567167755Ssam case MOD_UNLOAD: 1568167755Ssam /*XXX disallow if active sessions */ 1569167755Ssam error = 0; 1570167755Ssam crypto_destroy(); 1571167755Ssam return 0; 1572167755Ssam } 1573167755Ssam return error; 1574167755Ssam} 1575167755SsamMODULE_VERSION(crypto, 1); 1576167755SsamMODULE_DEPEND(crypto, zlib, 1, 1, 1); 1577