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NetBSD/sys/dev/pci/n8/nsp.c
cegger b8169823d2 use device_private(). 
"looks good" ad@
XXX for the device_t/softc split, please check the driver that no cases have been missed.
2009-05-12 08:22:59 +00:00

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/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Coyote Point Systems, Inc.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*-
* Copyright (C) 2001-2003 by NBMK Encryption Technologies.
* All rights reserved.
*
* NBMK Encryption Technologies provides no support of any kind for
* this software. Questions or concerns about it may be addressed to
* the members of the relevant open-source community at
* <tech-crypto@netbsd.org>.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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.
*/
/*
*
* nsp.c - NetOctave NSP2000 NetBSD OpenCrypto Driver
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/endian.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/device.h>
#include <sys/queue.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <uvm/uvm_extern.h>
#include <opencrypto/cryptodev.h>
#include <opencrypto/xform.h>
#include <sys/rnd.h>
#include <sys/md5.h>
#include <sys/sha1.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include "n8_driver_main.h"
#include "n8_driver_api.h"
#include "config.h"
#include "nsp.h"
#include "irq.h"
#include "n8_pub_rng.h"
#include "n8_pub_hash.h"
#include "n8_pub_symmetric.h"
#include "n8_pub_context.h"
#include "n8_pub_pk.h"
#include "nspvar.h"
static int nsp_probe(device_t parent, cfdata_t match, void *aux);
static void nsp_attach(device_t parent, device_t self, void *aux);
static int nsp_detach(device_t dev, int flags);
#ifdef _MODULE
CFATTACH_DECL(nsp2000, sizeof(struct nsp_softc), nsp_probe, nsp_attach, nsp_detach, NULL);
int nsp2000_lkmentry(struct lkm_table *lkmtp, int cmd, int ver);
CFDRIVER_DECL(nsp2000, DV_DULL, NULL);
extern struct cfdriver nsp2000_cd;
extern struct cfattach nsp2000_ca;
static int pciloc[] = { -1, -1 }; /* device, function */
static struct cfparent pciparent = {
"pci", "pci", DVUNIT_ANY
};
static struct cfdata nsp2000_cfdata[] = {
{"nsp2000", "nsp2000", 0, FSTATE_STAR, pciloc, 0, &pciparent},
{ 0, 0, 0, 0, 0, 0, 0 }
};
static struct cfdriver *nsp2000_cfdrivers[] = {
&nsp2000_cd,
NULL
};
static struct cfattach *nsp2000_cfattachs[] = {
&nsp2000_ca,
NULL
};
static const struct cfattachlkminit nsp2000_cfattachinit[] = {
{ "nsp2000", nsp2000_cfattachs },
{ NULL, NULL }
};
MOD_DRV("nsp2000", nsp2000_cfdrivers, nsp2000_cfattachinit, nsp2000_cfdata);
int
nsp2000_lkmentry(struct lkm_table *lkmtp, int cmd, int ver)
{
/* LKM_DISPATCH(lkmtp, cmd, NULL, att, det, stat) */
LKM_DISPATCH(lkmtp, cmd, NULL, lkm_nofunc, lkm_nofunc, lkm_nofunc);
}
#else /* _MODULE */
CFATTACH_DECL(nsp, sizeof(struct nsp_softc), nsp_probe, nsp_attach, nsp_detach, NULL);
#endif
static int nsp_intr(void *arg);
static int n8_process(void *arg, struct cryptop *crp, int hint);
static int n8_kprocess(void *arg, struct cryptkop *krp, int hint);
static int n8_freesession(void *arg, u_int64_t tid);
static int n8_newsession(void *arg, u_int32_t *sidp, struct cryptoini *cri);
static void n8_callback(void *data, N8_Status_t status);
static int n8_do_crypt(struct nsp_softc *sc,
struct cryptop *crp,
struct cryptodesc *crd,
nsp_session_t *session);
static int n8_do_hash(struct nsp_softc *sc,
struct cryptop *crp,
struct cryptodesc *crd,
nsp_session_t *session);
static int n8_start_crd(struct nsp_softc *sc,
struct cryptop *crp,
struct cryptodesc *crd,
int crd_id,
nsp_session_t *session);
static nsp_session_t *n8_session_alloc(struct nsp_softc *sc);
static void n8_session_free(struct nsp_softc *sc,
nsp_session_t *session);
/* Supported crypto algorithms */
static struct {
int id;
const char *name;
} nsp_algo[] = {
{ CRYPTO_DES_CBC, "CRYPTO_DES_CBC" },
{ CRYPTO_3DES_CBC, "CRYPTO_3DES_CBC" },
{ CRYPTO_MD5, "CRYPTO_MD5" },
{ CRYPTO_SHA1, "CRYPTO_SHA1" },
{ CRYPTO_MD5_HMAC, "CRYPTO_MD5_HMAC" },
{ CRYPTO_SHA1_HMAC, "CRYPTO_SHA1_HMAC" },
{ 0, NULL },
};
/* Supported key operations */
static struct {
int id;
const char *name;
} nsp_key[] = {
{ CRK_MOD_EXP, "CRK_MOD_EXP" },
{ CRK_DSA_SIGN, "CRK_DSA_SIGN" },
{ CRK_DSA_VERIFY, "CRK_DSA_VERIFY" },
{ CRK_DH_COMPUTE_KEY, "CRK_DH_COMPUTE_KEY" },
{ CRK_MOD_ADD, "CRK_MOD_ADD" },
{ CRK_MOD_ADDINV, "CRK_MOD_ADDINV" },
{ CRK_MOD_SUB, "CRK_MOD_SUB" },
{ CRK_MOD_MULT, "CRK_MOD_MULT" },
{ CRK_MOD_MULTINV, "CRK_MOD_MULTINV" },
{ CRK_MOD, "CRK_MOD" },
{ 0, NULL },
};
/* parameter handling definitions for each supported crypto key operation */
static struct {
const char *name;
int iparmcount; /* number of input parameters */
int oparmcount; /* number of output parameters */
uint32_t bignums; /* bit mask of bignum parameters needing conversion */
} crk_def[CRK_ALGORITHM_MAX+1] = {
{ "CRK_MOD_EXP", 3, 1, NSP_MOD_EXP_BIGNUMS },
{ NULL, 6, 1, NSP_MOD_EXP_CRT_BIGNUMS }, /* N/A */
//{ "CRK_MOD_EXP_CRT", 6, 1, NSP_MOD_EXP_CRT_BIGNUMS },
{ "CRK_DSA_SIGN", 5, 2, NSP_DSA_SIGN_BIGNUMS },
{ "CRK_DSA_VERIFY", 7, 0, NSP_DSA_VERIFY_BIGNUMS },
{ "CRK_DH_COMPUTE_KEY", 3, 1, NSP_DH_COMPUTE_KEY_BIGNUMS },
{ "CRK_MOD_ADD", 3, 1, NSP_MOD_ADD_BIGNUMS },
{ "CRK_MOD_ADDINV", 2, 1, NSP_MOD_ADDINV_BIGNUMS },
{ "CRK_MOD_SUB", 3, 1, NSP_MOD_SUB_BIGNUMS },
{ "CRK_MOD_MULT", 3, 1, NSP_MOD_MULT_BIGNUMS },
{ "CRK_MOD_MULTINV", 2, 1, NSP_MOD_MULTINV_BIGNUMS },
{ "CRK_MOD", 2, 1, NSP_MODULUS_BIGNUMS },
};
unsigned char N8_Debug_g = 0;
int NSPcount_g;
NspInstance_t NSPDeviceTable_g[NSP_MAX_INSTANCES];
static const struct nsp_product {
pci_vendor_id_t nsp_vendor;
pci_product_id_t nsp_product;
int nsp_flags;
const char *nsp_name;
} nsp_products[] = {
{ PCI_VENDOR_NETOCTAVE, PCI_PRODUCT_NETOCTAVE_NSP2000,
0,
"NetOctave NSP2000"
},
{ 0, 0,
0,
NULL
}
};
static const struct nsp_product *
nsp_lookup(const struct pci_attach_args *pa)
{
const struct nsp_product *nspp;
for (nspp = nsp_products; nspp->nsp_name != NULL; nspp++) {
if (PCI_VENDOR(pa->pa_id) == nspp->nsp_vendor &&
PCI_PRODUCT(pa->pa_id) == nspp->nsp_product)
return nspp;
}
return NULL;
}
static int
nsp_probe(device_t parent, cfdata_t match, void *aux)
{
static int once=0;
struct pci_attach_args *pa = (struct pci_attach_args *)aux;
if (!once++) {
/* Here we set the NSPcount_g to be ONE so our NSP2k queue allocation */
/* multiplier will not be zero. The linux and FreeBSD drivers differ */
/* in WHEN they increment the NSPcount_g variable. The count is taken */
/* at module load time under linux, but during the attach() in FBSD. */
/* FBSD doesn't offer an interface to walk the existing PCI device */
/* tree to count each N8 device. Code can be added to the kernel in */
/* /usr/src/sys/pci/pci.c to perform this function and allow the NSP */
/* queue sizes to be dynamically allocated based on the number of */
/* installed chips or boards. See Docs for details */
#if 0
NSPcount_g = 1;
if (nsp_driverInit(N8_EA_POOL_SIZE, N8_PK_POOL_SIZE))
{
NSPcount_g = 0;
return ENOMEM;
}
#endif
NSPcount_g = 0; /* reset to zero since we increment in attach */
}
if (nsp_lookup(pa) != NULL)
return 1;
return 0;
}
/* initialize the session array into a free list of
* available sessions.
*/
static void
n8_sessionInit(struct nsp_softc *sc)
{
int ind;
for (ind=0; ind<NSP_MAX_SESSION-1; ind++) {
sc->session[ind].next = &sc->session[ind+1];
}
sc->session[NSP_MAX_SESSION-1].next = NULL;
sc->freesession = &sc->session[0];
}
static void
nsp_attach(device_t parent, device_t self, void *aux)
{
struct nsp_softc *sc;
struct pci_attach_args *pa = aux;
const struct nsp_product *nspp;
pci_intr_handle_t ih;
const char *intrstr = NULL;
NspInstance_t *nip = &NSPDeviceTable_g[0]; /* can only attach once */
u_int32_t cmd;
int res;
int ind;
sc = device_private(self);
mutex_init(&sc->sc_intrlock, MUTEX_DEFAULT, IPL_NET);
sc->pa_pc = pa->pa_pc;
sc->pa_tag = pa->pa_tag;
sc->dma_tag = pa->pa_dmat;
DBG(("sc->dma_tag = 0x%x\n", (uint32_t)sc->dma_tag));
nspp = nsp_lookup(pa);
if (nspp == NULL) {
DBG(("\n"));
panic("nsp_attach: impossible");
}
sc->mem_mapped = 0;
nip->dev = self;
aprint_naive(": Crypto processor\n");
aprint_normal(": %s, rev. %d\n", nspp->nsp_name,
PCI_REVISION(pa->pa_class));
printf("NetOctave Encryption Processor - %s\n", device_xname(&sc->device));
n8_sessionInit(sc);
NSPcount_g = 1;
if (n8_driverInit(N8_EA_POOL_SIZE, N8_PK_POOL_SIZE)) {
DBG(("%s: Failed driver init\n", device_xname(&sc->device)));
NSPcount_g = 0;
return;
}
DBG(("n8_driverInit complete\n"));
/* reset to zero for rest of attach */
NSPcount_g = 0;
/*
* Map control/status registers.
*/
/* reset the TRDY timeout and RETRY timeout to reasonable values */
/* note: INSILICON_PCI_RETRY_TIMEOUT is the second byte */
cmd = pci_conf_read(sc->pa_pc, sc->pa_tag, INSILICON_PCI_TRDY_TIMEOUT);
cmd = (cmd & 0x0000FFFF); /* Zero TRDY_TIMEOUT and RETRY_TIMEOUT */
pci_conf_write(sc->pa_pc, sc->pa_tag, INSILICON_PCI_TRDY_TIMEOUT, cmd);
cmd = pci_conf_read(sc->pa_pc, sc->pa_tag, PCI_COMMAND_STATUS_REG);
cmd |= PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE;
pci_conf_write(sc->pa_pc, sc->pa_tag, PCI_COMMAND_STATUS_REG, cmd);
cmd = pci_conf_read(sc->pa_pc, sc->pa_tag, PCI_COMMAND_STATUS_REG);
if (!(cmd & PCI_COMMAND_MEM_ENABLE)) {
DBG(("nsp%d: failed to enable memory mapping!\n", sc->unit));
goto fail;
}
if (pci_mapreg_map(pa, NSP_BAR0, PCI_MAPREG_MEM_TYPE_64BIT, 0,
&sc->mem_tag, &sc->mem_handle, NULL, &sc->mem_size)) {
aprint_error_dev(&sc->device, "can't map mem space %d\n", 0);
return;
}
sc->mem_mapped = 1;
DBG(("nsp pci register space mapped\n"));
/*
* Allocate interrupt.
*/
if (pci_intr_map(pa, &ih)) {
aprint_error("nsp%d: couldn't map interrupt\n",
sc->unit);
goto fail;
}
intrstr = pci_intr_string(sc->pa_pc, ih);
sc->int_handle = pci_intr_establish(sc->pa_pc, ih, IPL_NET,
nsp_intr, sc);
if (sc->int_handle == NULL) {
aprint_error("nsp%d: couldn't establish interrupt", sc->unit);
if (intrstr != NULL)
aprint_normal(" at %s", intrstr);
aprint_normal("\n");
goto fail;
}
aprint_normal("nsp%d: interrupting at %s\n", sc->unit, intrstr);
/* setup card */
memset(nip, 0, sizeof (*nip));
sc->nip = nip;
nip->dev = sc;
nip->chip = NSPcount_g;
nip->PCIinfo.vendor_id = PCI_VENDOR(pa->pa_id);
nip->PCIinfo.device_id = PCI_PRODUCT(pa->pa_id);
nip->PCIinfo.revision_id =
PCI_REVISION(pci_conf_read(sc->pa_pc, sc->pa_tag, PCI_CLASS_REG));
#ifdef N8_ZERO_CACHE_LINE
/* ENSURE Cache line size is zero in PCI CONFIG SPACE */
/* This forces the chip to use PCI MEM_READ and not */
/* MEM_READ_MULTIPLE - this may impact performance */
pci_write_config(dev, PCIR_CACHELNSZ, 0x00, 1);
#endif
nip->PCIinfo.base_address[0] = sc->mem_handle;
nip->PCIinfo.base_range [0] = sc->mem_handle + DEF_ASIC_PCI_MEMORY_SIZE_2;
nip->NSPregs_base = nip->PCIinfo.base_address[0];
nip->NSPregs_p = (unsigned long*)nip->NSPregs_base;
DBG(("nsp%d: calling n8_chipInit\n", sc->unit));
if (!n8_chipInit(nip, nip->chip, N8_DEF_CMD_QUE_EXP, DEBUG_GENERAL)) {
DBG(("NSP2000: Failed to allocate resources for device #%d.\n",
nip->chip));
goto fail_int;
}
DBG(("NSP2000: Configured NSP2000 ASIC #%d @%08lx (%ld MB CtxMem).\n",
nip->chip, nip->NSPregs_base,
(nip->contextMemSize / 1024) / 1024));
sc->cid = crypto_get_driverid(0);
if (sc->cid < 0) {
DBG(("nsp%d: couldn't get crypto driver id\n",
sc->unit));
n8_driverRemove();
goto fail_int;
}
/* Increment our device count. */
NSPcount_g++;
/* Configure/enable interrupts. */
n8_enableInterrupts(N8_AMBA_TIMER_PRESET);
/* Register crypto support with opencrypto */
DBG(("nsp_attach: registering with opencrypto\n"));
for (ind=0; nsp_algo[ind].id != 0; ind++) {
res = crypto_register(sc->cid, nsp_algo[ind].id, 0, 0,
n8_newsession, n8_freesession, n8_process, sc);
if (res < 0) {
DBG(("nsp_attach: failed to register %s, err=%d\n",
nsp_algo[ind].name, res));
} else {
DBG(("nsp_attach: registered %s\n",
nsp_algo[ind].name));
}
}
/* XXX use crk_def instead, or combine nsp_key and crk_def */
for (ind=0; nsp_key[ind].name != NULL; ind++) {
res = crypto_kregister(sc->cid, nsp_key[ind].id, 0,
n8_kprocess, sc);
if (res < 0) {
DBG(("nsp_attach: failed to kregister %s, err=%d\n",
nsp_key[ind].name, res));
} else {
DBG(("nsp_attach: kregistered %s\n",
nsp_key[ind].name));
}
}
DBG(("nsp_attach: ready\n"));
return;
fail_int:
pci_intr_disestablish(sc->pa_pc, sc->int_handle);
sc->int_handle = NULL;
fail:
bus_space_unmap(sc->mem_tag, sc->mem_handle, sc->mem_size);
sc->mem_mapped = 0;
return;
}
int
nsp_detach(device_t dev, int flags)
{
struct nsp_softc *sc;
int res;
int ind;
sc = device_private(dev);
mutex_enter(&sc->sc_intrlock);
DBG(("nsp.%d detach\n", sc->unit));
DBG(("nsp_detach: unregistering with opencrypto\n"));
for (ind=0; nsp_algo[ind].id != 0; ind++) {
res = crypto_unregister(sc->cid, nsp_algo[ind].id);
if (res < 0) {
DBG(("nsp_attach: failed to unregister %s, err=%d\n",
nsp_algo[ind].name, res));
} else {
DBG(("nsp_attach: unregistered %s\n",
nsp_algo[ind].name));
}
}
n8_disableInterrupts();
if (sc->int_handle != NULL) {
pci_intr_disestablish(sc->pa_pc, sc->int_handle);
DBG(("nsp.%d intr disestablished\n", sc->unit));
} else {
DBG(("nsp.%d no intr registered\n", sc->unit));
}
DBG(("nsp.%d: calling n8_driverRemove()\n", sc->unit));
n8_driverRemove();
if (sc->mem_mapped) {
DBG(("nsp.%d unmapping PCI memory\n", sc->unit));
bus_space_unmap(sc->mem_tag, sc->mem_handle, sc->mem_size);
} else {
DBG(("nsp.%d no memory mapped\n", sc->unit));
}
mutex_exit(&sc->sc_intrlock);
return 0;
}
static int
nsp_intr(void *arg)
{
struct nsp_softc *sc = arg;
NspInstance_t *nip = sc->nip;
mutex_enter(&sc->sc_intrlock);
DBG(("nsp_intr: handler fired\n"));
n8_MainInterruptHandler(nip);
mutex_exit(&sc->sc_intrlock);
return 1;
}
N8_Status_t N8_GetRandomBytes(int num_bytes, char *buf_p, N8_Event_t *event_p)
{
RN_Request_t rn_request; /* RNG request structure */
N8_Status_t ret;
DBG(("N8_GetRandomBytes\n"));
/* check the number of bytes requested
it can't be less or equal to 0 or more than N8_RNG_MAX_REQUEST. */
if ((num_bytes <= 0) || (num_bytes > N8_RNG_MAX_REQUEST)) {
DBG(("Number of bytes requested is out of range : %d\n", num_bytes));
DBG(("N8_GetRandomBytes - return Error\n"));
return N8_INVALID_INPUT_SIZE;
}
rn_request.userRequest = N8_FALSE;
rn_request.userBuffer_p = buf_p;
rn_request.numBytesRequested = num_bytes;
/* we have a valid request. queue it up. */
ret = Queue_RN_request(&rn_request);
if (ret != N8_STATUS_OK) {
DBG(("Queue_RN_request failed\n"));
return ret;
}
if (event_p != NULL) {
event_p->unit = N8_RNG;
event_p->state = NULL;
event_p->status = N8_QUEUE_REQUEST_FINISHED;
}
return ret;
} /* N8_GetRandomBytes */
N8_Status_t
n8_gettime( n8_timeval_t *n8_timeResults_p )
{
struct timespec ts;
N8_Status_t returnResults = N8_STATUS_OK;
getnanotime(&ts);
/* Timespec has a seconds portion and a nano seconds portion. */
/* Thus we need to divide to convert nanoseconds to microseconds. */
n8_timeResults_p->tv_sec = ts.tv_sec;
n8_timeResults_p->tv_usec = ts.tv_nsec / 1000;
return returnResults;
} /* n8_gettime */
/* map an N8 Status error to a semi-appropriate errno */
static int
n8_map_errno(N8_Status_t error)
{
switch (error) {
case N8_STATUS_OK:
return 0;
case N8_INVALID_INPUT_SIZE:
case N8_INVALID_OUTPUT_SIZE:
case N8_INVALID_KEY_SIZE:
return ERANGE;
case N8_INVALID_ENUM:
return EDOM;
case N8_INVALID_PARAMETER:
case N8_INVALID_OBJECT:
/* coding bug */
break;
case N8_INVALID_PROTOCOL:
return EPROTOTYPE;
case N8_INVALID_KEY:
case N8_INVALID_CIPHER:
case N8_INVALID_HASH:
case N8_INVALID_VALUE:
return EINVAL;
case N8_WEAK_KEY:
break;
case N8_UNIMPLEMENTED_FUNCTION:
return ENODEV;
case N8_INCONSISTENT:
return EINVAL;
case N8_NO_MORE_RESOURCE:
return EBUSY;
case N8_MALLOC_FAILED:
return ENOMEM;
case N8_INVALID_VERSION:
case N8_NOT_INITIALIZED:
case N8_UNALLOCATED_CONTEXT:
case N8_HARDWARE_ERROR:
case N8_UNEXPECTED_ERROR:
return EIO;
default:
break;
}
return EINVAL;
}
/* allocate a session for a crypto op */
static nsp_session_t *
n8_session_alloc(struct nsp_softc *sc)
{
nsp_session_t *session;
mutex_enter(&sc->sc_intrlock);
session = sc->freesession;
if (sc->freesession == NULL) {
printf("n8_newsession(): out of sessions (max = %d)\n",
NSP_MAX_SESSION);
mutex_exit(&sc->sc_intrlock);
return NULL;
}
sc->freesession = session->next;
session->next = NULL;
session->magic = 0xDEADFEED;
mutex_exit(&sc->sc_intrlock);
session->contextAllocated = 0;
session->active = 0;
return session;
}
/* free a crypto op session */
static void
n8_session_free(struct nsp_softc *sc, nsp_session_t *session)
{
if (session->contextAllocated) {
N8_FreeContext(session->contextHandle, NULL);
session->contextAllocated = 0;
}
mutex_enter(&sc->sc_intrlock);
if (session == NULL) {
DBG(("n8_session_free: attempt to free NULL\n"));
mutex_exit(&sc->sc_intrlock);
return;
}
session->next = sc->freesession;
sc->freesession = session;
session->magic = 0xFEED;
mutex_exit(&sc->sc_intrlock);
}
/**********************************************************************
* FUNCTION: n8_newsession(*arg, *sidp, *cri)
* DESCRIPTION: The opencrypto new session handler. This function
* creates and initializes a new crypto session.
* The session can then be used to process crypto
* cipher and hash operations vi n8_process().
* Initial information is stored in the session
* at this time (e.g. keys, IVs).
* INPUTS: arg - N8 device softc
* cri - crypto cipher/hash initializtion info
* OUTPUTS: sidp - the id for the session. An arbitrary
* integer managed by us (in this case the
* index into the session array). This will
* be supplied to n8_process() to identify the
* session.
* RETURNS: 0 - ok
* else an errno value
* NOTES: This is a synchronous function - no async ops are
* started on the N8. These are all handled in the
* later n8_process() call.
**********************************************************************/
static int
n8_newsession(void *arg, u_int32_t *sidp, struct cryptoini *cri)
{
struct cryptoini *cinit;
struct cryptoini *cinit_crypto=NULL;
struct cryptoini *cinit_hash=NULL;
struct nsp_softc *sc = arg;
nsp_session_t *session;
int res;
if (sc == NULL) {
DBG(("n8_newsession(): sc == NULL\n"));
return EINVAL;
}
for (cinit=cri; cinit != NULL; cinit = cinit->cri_next) {
switch (cinit->cri_alg) {
case CRYPTO_MD5:
case CRYPTO_SHA1:
case CRYPTO_MD5_HMAC:
case CRYPTO_SHA1_HMAC:
if (cinit_hash != NULL) {
DBG(("n8_newsession(): ERROR - multiple hash requests\n"));
return EINVAL;
}
cinit_hash = cinit;
break;
case CRYPTO_AES_CBC:
DBG(("n8_newsession(): invalid crypto op %d\n", cinit->cri_alg));
return (EINVAL);
break;
case CRYPTO_DES_CBC:
case CRYPTO_3DES_CBC:
if (cinit_crypto != NULL) {
DBG(("n8_newsession(): ERROR - multiple crypto requests\n"));
return EINVAL;
}
cinit_crypto = cinit;
break;
default:
return (EINVAL);
}
}
if ((cinit_crypto == NULL) && (cinit_hash == NULL)) {
DBG(("n8_newsession(): no supported crypto ops\n"));
return EINVAL;
}
session = n8_session_alloc(sc);
if (session == NULL) {
DBG(("n8_newsession(): out of sessions (max = %d)\n",
NSP_MAX_SESSION));
return ENOMEM;
}
if (cinit_crypto != NULL) {
/* get a context for this session */
/* XXX not needed but faster with or without? */
res = N8_AllocateContext(&session->contextHandle, N8_ANY_UNIT);
if (res != N8_STATUS_OK) {
DBG(("%s.%d: failed to allocate context, err=%d\n",
__FILE__, __LINE__, res));
n8_session_free(sc, session);
return ENOMEM;
}
session->contextAllocated = 1;
/* use the same unit that the context came from */
session->cipherInfo.unitID = session->contextHandle.unitID;
DBG(("n8_newsession: 3DES assigned to n8 unit %d\n",
session->contextHandle.unitID));
session->cipherInfo.keySize = DES_KEY_SIZE_BYTES;
/* get IV and key for DES/3DES */
if (cinit_crypto->cri_klen > 0) {
memcpy(session->iv, &cinit_crypto->cri_iv[0], 8);
if (cinit_crypto->cri_alg == CRYPTO_DES_CBC) {
DBG(("n8_newsession: setup CRYPTO_DES_CBC\n"));
if (cinit_crypto->cri_klen != 64) {
DBG(("n8_newsession(): des key len %d != 64\n",
cinit_crypto->cri_klen));
n8_session_free(sc, session);
return EINVAL;
}
/* repeat the key 3 times for single DES */
memcpy(session->cipherInfo.key.keyDES.key1,
&cinit_crypto->cri_key[0], 8);
memcpy(session->cipherInfo.key.keyDES.key2,
&cinit_crypto->cri_key[0], 8);
memcpy(session->cipherInfo.key.keyDES.key3,
&cinit_crypto->cri_key[0], 8);
} else {
DBG(("n8_newsession: setup CRYPTO_3DES_CBC\n"));
if (cinit_crypto->cri_klen != 192) {
DBG(("n8_newsession(): 3des key len %d != 192\n",
cinit_crypto->cri_klen));
n8_session_free(sc, session);
return EINVAL;
}
memcpy(session->cipherInfo.key.keyDES.key1,
&cinit_crypto->cri_key[0], 8);
memcpy(session->cipherInfo.key.keyDES.key2,
&cinit_crypto->cri_key[8], 8);
memcpy(session->cipherInfo.key.keyDES.key3,
&cinit_crypto->cri_key[16], 8);
}
}
}
if (cinit_hash != NULL) {
/* setup for hashing */
if (cinit_hash->cri_key != NULL) {
/* take a copy of the key for hmac */
session->mackeylen = (cinit_hash->cri_klen+7)/8;
memcpy(session->mackey,
&cinit_hash->cri_key[0],
session->mackeylen);
DBG(("n8_newsession: stored hmac key %d bytes\n", session->mackeylen));
} else {
session->mackeylen = 0;
}
}
/* return the index for the session */
*sidp = session - sc->session;
session->sc = sc;
session->sid = *sidp;
DBG(("n8_newsession: completed - session %d\n", *sidp));
return 0;
}
/**********************************************************************
* FUNCTION: n8_freesession(*arg, *sidp, *cri)
* DESCRIPTION: The opencrypto free session handler. This function
* frees the specified session, releasing any
* associated resources (e.g. N8 context).
* INPUTS: arg - N8 device softc
* tid - The id of the session to free.
* RETURNS: 0 - ok
* else an errno value
* NOTES: XXX can this be called while the session is active?
**********************************************************************/
static int
n8_freesession(void *arg, u_int64_t tid)
{
struct nsp_softc *sc = arg;
uint32_t sid = ((uint32_t) tid) & 0xffffffff;
nsp_session_t *session;
if (sc == NULL) {
DBG(("n8_freesession(): sc == NULL\n"));
return EINVAL;
}
if (sid >= NSP_MAX_SESSION) {
DBG(("n8_freesession(): sid %d out of range\n",sid));
return EINVAL;
}
session = &sc->session[sid];
/*
* Need to check if a partial operation is in progress
* and end it if so.
*/
if (session->active) {
printf("n8_freesession: error - session 0x%04x is active. Not freeing.\n", sid);
//session->freePending = 1;
/* should be protected by the framework. If the session is
* freed while active nasty things will happen for all of the data
* references.
*/
return 0;
}
n8_session_free(sc, session);
DBG(("n8_freesession: completed - session %d\n", sid));
return 0;
}
/**********************************************************************
* FUNCTION: n8_process(*arg, *crp, hint)
* DESCRIPTION: The opencrypto crypto operation handler. This function
* expects to be called when the user app requests a
* cipher or hash operation for a crypto session.
* It kicks off the appopriate N8 async operation
* to handle the request.
* INPUTS: arg - N8 device softc
* krp - opencrypto crypto operation description
* hint - not used.
* RETURNS: 0 - ok
* else an errno value
**********************************************************************/
static int
n8_process(void *arg, struct cryptop *crp, int hint)
{
struct nsp_softc *sc = arg;
struct cryptodesc *crd;
nsp_session_t *session;
uint32_t sid = (uint32_t)(crp->crp_sid & 0xFFFFFFFF);
int res=0;
int hash_seen, crypto_seen; /* booleans for error checking */
int crd_count=0; /* number of descriptors */
DBG(("n8_process: session %d\n", sid));
if (sc == NULL) {
DBG(("n8_process: sc == NULL\n"));
return EINVAL;
}
if (sid >= NSP_MAX_SESSION) {
DBG(("n8_process: sid %d out of range\n",sid));
return EINVAL;
}
session = &sc->session[sid];
session->crp = crp;
session->crd = NULL;
DBG(("n8_process: crp_ilen %d crp_olen %d crp_mac %p\n",
crp->crp_ilen, crp->crp_olen, crp->crp_mac));
#ifdef NBDEBUG
printf("n8_process: flags 0x%04x\n", crp->crp_flags);
for (flag=1; flag<=0x80; flag<<=1) {
if (flag & crp->crp_flags) {
switch (flag) {
case CRYPTO_F_IMBUF:
printf("\tCRYPTO_F_IMBUF\n");
break;
case CRYPTO_F_IOV:
printf("\tCRYPTO_F_IOV\n");
break;
case CRYPTO_F_REL:
printf("\tCRYPTO_F_REL\n");
break;
case CRYPTO_F_BATCH:
printf("\tCRYPTO_F_BATCH\n");
break;
case CRYPTO_F_CBIMM:
printf("\tCRYPTO_F_CBIMM\n");
break;
case CRYPTO_F_DONE:
printf("\tCRYPTO_F_DONE\n");
break;
case CRYPTO_F_CBIFSYNC:
printf("\tCRYPTO_F_CBIFSYNC\n");
break;
default:
printf("\tUnknown flag 0x%x\n", flag);
break;
}
}
}
#endif
/* set up source and dest */
if (crp->crp_flags & CRYPTO_F_IMBUF) {
session->src.mb = (struct mbuf *)crp->crp_buf;
session->dst.mb = (struct mbuf *)crp->crp_buf;
return EINVAL; /* XXX to be done */
} else if (crp->crp_flags & CRYPTO_F_IOV) {
session->src.io = (struct uio *)crp->crp_buf;
session->dst.io = (struct uio *)crp->crp_buf;
/* hash operations still use direct writes
* for the digest.
*/
session->mac = (N8_Buffer_t *)crp->crp_mac;
} else {
/* contiguous buffer in memory */
session->src.ptr = (N8_Buffer_t *)crp->crp_buf;
session->dst.ptr = (N8_Buffer_t *)crp->crp_buf;
/* the crd will specify an injection offset for
* the hash operation */
session->mac = (N8_Buffer_t *)crp->crp_buf;
}
/* check data length */
if (crp->crp_ilen > 0x4800) {
/* not yet supported - will require segmenting the data
* into multiple 18KB blocks, and multiple calls
* to the card, and probable copies of the input
* data to avoid overwriting the next block
* with ciphertext expansion.
*/
printf("n8_process: crp_ilen %d too big\n", crp->crp_ilen);
return EFBIG;
}
if (crp->crp_olen > 0x4800) {
/* not yet supported - will require segmenting the data
* into multiple 18KB blocks, and multiple calls
* to the card, and probable copies of the input
* data to avoid overwriting the next block
* with ciphertext expansion.
*/
printf("n8_process: crp_olen %d too big\n", crp->crp_olen);
return EFBIG;
}
/* check for supported set of operations */
crypto_seen = 0;
hash_seen = 0;
for (crd=crp->crp_desc,crd_count=0; crd != NULL; crd=crd->crd_next, crd_count++) {
#ifdef N8DEBUG
printf("n8_process: crd %d - crd_flags 0x%04x\n", crd_count, crd->crd_flags);
if (crd->crd_flags & CRD_F_ENCRYPT)
printf("\tCRD_F_ENCRYPT\n");
if (crd->crd_flags & CRD_F_IV_PRESENT)
printf("\tCRD_F_IV_PRESENT\n");
if (crd->crd_flags & CRD_F_IV_EXPLICIT)
printf("\tCRD_F_IV_EXPLICIT\n");
if (crd->crd_flags & CRD_F_DSA_SHA_NEEDED)
printf("\tCRD_F_DSA_SHA_NEEDED \n");
#endif
switch (crd->crd_alg) {
case CRYPTO_MD5:
case CRYPTO_SHA1:
case CRYPTO_MD5_HMAC:
case CRYPTO_SHA1_HMAC:
if (hash_seen) {
printf("n8_newsession(): multiple hash requests\n");
return EINVAL;
}
hash_seen = 1;
break;
case CRYPTO_AES_CBC:
printf("n8_newsession(): invalid crypto op %d\n", crd->crd_alg);
return EINVAL;
break;
case CRYPTO_DES_CBC:
case CRYPTO_3DES_CBC:
if (crypto_seen) {
printf("n8_newsession(): multiple crypto requests\n");
return EINVAL;
}
crypto_seen = 1;
break;
default:
return EINVAL;
}
}
/* kick off first operation */
session->active = 1;
res = n8_start_crd(sc, crp, crp->crp_desc, 0, session);
if (res != 0) {
/* op did not start, so session is not active */
/* Note that the operation can complete before we
* get to here, hence the session is flagged as
* active before its started just in case.
*/
session->active = 0;
}
return res;
}
/**********************************************************************
* FUNCTION: n8_callback(*arg, status)
* DESCRIPTION: Called when a crypto or hash operation is completed by
* the N8.
* This function checks for any further operations
* for the session and kicks the next one off.
* If all operations have completed it returns
* the results to the opencrypto framework.
* INPUTS: arg - the session context
* status - The result of the N8 operation.
*
* RETURNS: none.
**********************************************************************/
static void
n8_callback(void *arg, N8_Status_t status)
{
nsp_session_t *session=arg;
struct cryptop *crp;
int res;
crp = session->crp;
DBG(("n8_callback: session %d(0x%x) crd %d done, status %d\n",
(uint32_t)(crp->crp_sid & 0xFFFFFFFF),
session->magic,
session->crd_id,
status));
if (status != N8_STATUS_OK) {
DBG(("n8_callback: operation (crd_alg %d) failed (res=%d)\n",
session->crd->crd_alg, status));
crp->crp_etype = n8_map_errno(status);
session->active = 0;
crypto_done(crp);
return;
}
/* Any more operations needed for this request? */
if (session->crd->crd_next != NULL) {
DBG(("n8_callback: starting next crd\n"));
res = n8_start_crd(session->sc, session->crp,
session->crd->crd_next,
session->crd_id + 1,
session);
if (res != 0) {
/* how do we let the user know? */
DBG(("n8_callback: error %d starting crd\n", res));
crp->crp_etype = res;
session->active = 0;
crypto_done(crp);
}
} else {
/* no more ops so this request is complete */
DBG(("n8_callback: crypto_done, session %d -> inactive\n",
(session - session->sc->session)));
session->active = 0;
crypto_done(crp);
}
}
/**********************************************************************
* FUNCTION: n8_start_crd(*sc, *crp, *crd, crd_id, *session)
* DESCRIPTION: Start a crypto operation.
* Kicks off a asynchronous crypto, or hash operation.
* INPUTS: sc - device data
* crp - crypto operation request
* crd - crypto operation to start
* crd_id - opencrypto crypto session id
* session - session record to manage the operation.
*
* RETURNS: 0 = success, else ERRNO value.
**********************************************************************/
static int
n8_start_crd(struct nsp_softc *sc,
struct cryptop *crp,
struct cryptodesc *crd,
int crd_id,
nsp_session_t *session)
{
int res = 0;
#ifdef N8DEBUG
printf("n8_start_crd: starting crd %d\n", crd_id);
printf("n8_start_crd: crd_skip %d, crd_len %d, crd_inject %d\n",
crd->crd_skip,
crd->crd_len,
crd->crd_inject);
if (crd->crd_flags & CRD_F_ENCRYPT)
printf("\tCRD_F_ENCRYPT\n");
if (crd->crd_flags & CRD_F_IV_PRESENT)
printf("\tCRD_F_IV_PRESENT\n");
if (crd->crd_flags & CRD_F_IV_EXPLICIT)
printf("\tCRD_F_IV_EXPLICIT\n");
if (crd->crd_flags & CRD_F_DSA_SHA_NEEDED)
printf("\tCRD_F_DSA_SHA_NEEDED \n");
#endif
session->crd = crd;
session->crd_id = crd_id;
/* note the errors should never occur since the crd list is
* pre-checked for validity
*/
switch (crd->crd_alg) {
case CRYPTO_MD5:
case CRYPTO_SHA1:
case CRYPTO_MD5_HMAC:
case CRYPTO_SHA1_HMAC:
res = n8_do_hash(sc, crp, crd, session);
break;
case CRYPTO_DES_CBC:
case CRYPTO_3DES_CBC:
res = n8_do_crypt(sc, crp, crd, session);
break;
default:
printf("n8_start_crd: invalid crypto op %d\n", crd->crd_alg);
return EINVAL;
}
return res;
}
/**********************************************************************
* FUNCTION: n8_do_crypt(*sc, *crp, *crd, *session)
* DESCRIPTION: Kick off an encrypt or decrypt operation for a session.
* A session has one or more operations to perform on the
* data. This function starts the operation specified
* by the crd.
* INPUTS: sc - the device state
* crp - the crypto control data for the operation
* crd - the crypto operation to start
* session - session and context info for crypto ops
*
* RETURNS: 0 - operation sucessfully started.
* else ERRNO value.
**********************************************************************/
static int
n8_do_crypt(struct nsp_softc *sc,
struct cryptop *crp,
struct cryptodesc *crd,
nsp_session_t *session)
{
N8_Event_t event;
int res=0;
int ivlen = 8; /* DES, 3DES CBC */
/* IV Explicitly Provided? */
if (crd->crd_flags & CRD_F_IV_EXPLICIT) {
/* yes: use it for the operation */
memcpy(session->cipherInfo.key.keyDES.IV,
crd->crd_iv, ivlen);
} else {
/* No: use the earlier setup one */
memcpy(session->cipherInfo.key.keyDES.IV,
session->iv, ivlen);
}
/* IV not in place? */
if ((crd->crd_flags & CRD_F_IV_PRESENT) == 0) {
if (crp->crp_flags & CRYPTO_F_IMBUF) {
m_copyback(session->src.mb, crd->crd_inject,
ivlen,
session->cipherInfo.key.keyDES.IV);
} else if (crp->crp_flags & CRYPTO_F_IOV) {
cuio_copyback(session->src.io, crd->crd_inject,
ivlen,
session->cipherInfo.key.keyDES.IV);
}
}
res = N8_EncryptInitialize(&session->crypt, &session->contextHandle,
N8_CIPHER_DES, &session->cipherInfo, NULL);
if (res != N8_STATUS_OK) {
printf("N8_EncryptInitialize: Failed - res=%d\n", res);
return n8_map_errno(res);
}
event.usrCallback = n8_callback;
event.usrData = (void *)session;
if (crd->crd_flags & CRD_F_ENCRYPT) {
if (crp->crp_flags & CRYPTO_F_IOV) {
res = N8_Encrypt_uio(&session->crypt, session->src.io,
crd->crd_len, session->dst.io, &event);
} else if (crp->crp_flags & CRYPTO_F_IMBUF) {
printf("CRYPTO_F_IMBUF not implemented for Encrypt\n");
} else {
res = N8_Encrypt(&session->crypt,
session->src.ptr+crd->crd_skip,
crd->crd_len, session->dst.ptr+crd->crd_inject, &event);
}
} else {
if (crp->crp_flags & CRYPTO_F_IOV) {
res = N8_Decrypt_uio(&session->crypt, session->src.io,
crd->crd_len, session->dst.io, &event);
} else if (crp->crp_flags & CRYPTO_F_IMBUF) {
printf("CRYPTO_F_IMBUF not implemented for Decrypt\n");
} else {
res = N8_Decrypt(&session->crypt, session->src.ptr+crd->crd_skip,
crd->crd_len, session->dst.ptr+crd->crd_inject, &event);
}
}
return n8_map_errno(res);
}
/**********************************************************************
* FUNCTION: n8_do_hash(*sc, *crp, *crd, *session)
* DESCRIPTION: Kick off a hash operation for a session.
* A session has one or more operations to perform on the
* data. This function starts the operation specified
* by the crd.
* INPUTS: sc - the device state
* crp - the crypto control data for the operation
* crd - the crypto hash operation to start
* session - session and context info for crypto ops
*
* RETURNS: 0 - operation sucessfully started.
* else ERRNO value.
**********************************************************************/
static int
n8_do_hash(struct nsp_softc *sc,
struct cryptop *crp,
struct cryptodesc *crd,
nsp_session_t *session)
{
N8_Event_t event;
N8_HashInfo_t info;
N8_HashAlgorithm_t alg;
int res=0;
info.unitID = N8_ANY_UNIT;
info.keyLength = 0;
switch (crd->crd_alg) {
case CRYPTO_MD5:
alg = N8_MD5;
break;
case CRYPTO_SHA1:
alg = N8_SHA1;
break;
case CRYPTO_MD5_HMAC:
alg = N8_HMAC_MD5;
if (crd->crd_klen == 0) {
DBG(("CRYPTO_MD5_HMAC: using session key, len %d\n",session->mackeylen));
/* use the session key */
info.keyLength = session->mackeylen;
info.key_p = session->mackey;
/* Sanity check */
if (session->mackeylen == 0) {
printf("No key provided for HMAC\n");
return EINVAL;
}
} else {
info.keyLength = (crd->crd_klen+7)/8;
info.key_p = crd->crd_key;
DBG(("CRYPTO_MD5_HMAC: using crd key, len %d\n", info.keyLength));
}
break;
case CRYPTO_SHA1_HMAC:
alg = N8_HMAC_SHA1;
if (crd->crd_klen == 0) {
DBG(("CRYPTO_SHA1_HMAC: using session key, len %d\n",session->mackeylen));
/* use the session key */
info.keyLength = session->mackeylen;
info.key_p = session->mackey;
/* Sanity check */
if (session->mackeylen == 0) {
printf("No key provided for HMAC\n");
return EINVAL;
}
} else {
info.keyLength = (crd->crd_klen+7)/8;
info.key_p = crd->crd_key;
DBG(("CRYPTO_SHA1_HMAC: using crd key, len %d\n", info.keyLength));
}
break;
case CRYPTO_RIPEMD160_HMAC:
return ENODEV;
break;
default:
printf("n8_do_hash: invalid hash algorithm %d\n",
crd->crd_alg);
return ENODEV;
}
res = N8_HashInitialize(&session->hash, alg, &info, NULL);
if (res != N8_STATUS_OK) {
printf("n8_do_hash: N8_HashInitialize failed, error=%d\n",
res);
return n8_map_errno(res);
}
if ((crp->crp_flags & (CRYPTO_F_IOV | CRYPTO_F_IMBUF)) == 0) {
/* use the crd's injection offset to obtain the output
* address for the digest.
*/
session->mac = session->src.ptr + crd->crd_inject;
}
DBG(("N8_HashInitialize: res=%d (crd_len=%d)\n", res, crd->crd_len));
event.usrCallback = n8_callback;
event.usrData = (void *)session;
res = N8_HashCompleteMessage_uio(&session->hash, session->src.io,
crd->crd_len, session->mac, &event);
DBG(("N8_HashCompleteMessage_uio: res=%d\n", res));
return n8_map_errno(res);
}
/**********************************************************************
* FUNCTION: bn_le_to_be(*le, numbits, *be)
* DESCRIPTION: Return the big-endian representation of the
* little-endian byte stream.
* Basically a conversion from the opencrypto big-number format
* to the N8 big-number format.
* INPUTS: le - pointer to the little-endian byte-stream
* numbits - number of bits to convert (this is rounded up
* to be a multiple of 8).
* OUTPUTS: be - big-endian byte stream conversion of *le
* RETURNS: size of *be as number of bytes.
* NOTE: assumes any remainder bits are zero, which is
* true for OpenSSL bignum bit counts.
**********************************************************************/
static uint32_t
bn_le_to_be(uint8_t *le, int numbits, N8_Buffer_t *be)
{
int numbytes;
int ind;
numbytes = (numbits+7)/8;
for (ind=0; ind<numbytes; ind++) {
be[ind] = le[numbytes-ind-1];
}
return numbytes;
}
/**********************************************************************
* FUNCTION: n8_kcallback_finish(void *arg, N8_Status_t status)
* DESCRIPTION: Interrupt handler for N8 key operation completion.
* This handler is called when the final N8 operation
* completes for an asymmetric operation or modular
* arithmetic operation.
* If the status is ok, the results of the operation
* are passed back to the application vi opencrypto.
* Any bignum results are converted from big-endian
* to little-endian before being passed back.
*
* If the status was an error then it is noted for later.
* This handler will be invoked a second time by the N8 once
* the operation has been cleaned up (status will be ok),
* at which time the error is passed back to the application.
* INPUTS: arg - pointer to the key operation request data
* to be a multiple of 8).
* status - result of the operation.
* RETURNS: none.
**********************************************************************/
static void
n8_kcallback_finish(void *arg, N8_Status_t status)
{
n8_kreq_t *req=arg;
uint8_t data;
DBG(("%s: status %d, req magic 0x%x\n", __func__, status, req->magic));
if (req->krp == NULL) {
printf("%s: called with NULL krp\n", __func__);
return;
}
if (status == N8_STATUS_OK) {
int ind;
int parm;
int res;
/* was there an earlier error? */
if (req->error) {
/* Yes - we're done then. */
printf("%s: finishing op, error was %d\n", __func__, req->error);
if (req->krp->krp_op == CRK_DSA_VERIFY) {
/* the CRK_DSA_VERIFY result semantics
* return 1 for verify ok, 0 for verify failed,
* and -1 for any other errors
*/
req->krp->krp_status = -1;
} else {
/* the rest of the operations return an ERRNO */
req->krp->krp_status = req->error; /* XXX translate to errno */
}
/* clean up N8 operations */
switch (req->krp->krp_op) {
case CRK_DSA_VERIFY:
case CRK_DSA_SIGN:
N8_DSAFreeKey(&req->op.dsa.key);
break;
case CRK_DH_COMPUTE_KEY:
N8_DHFreeKey(&req->op.dh.key);
break;
case CRK_MOD_EXP_CRT:
N8_RSAFreeKey(&req->op.rsa.key);
break;
default:
/* nothing to clean up */
break;
}
crypto_kdone(req->krp);
req->krp = NULL;
free(req, M_DEVBUF); /* XXX use a pool... */
return;
}
/* convert any bignum results to little-endian */
for (parm=crk_def[req->krp->krp_op].iparmcount;
parm < (crk_def[req->krp->krp_op].iparmcount +
crk_def[req->krp->krp_op].oparmcount);
parm++) {
int numbytes = req->parm[parm].lengthBytes;
/* need to convert bignum to little-endian? */
if (crk_def[req->krp->krp_op].bignums & BN_ARG(parm)) {
/* convert the big-endian result to little-endian */
for (ind=0; ind<numbytes/2; ind++) {
data = req->parm[parm].value_p[ind];
req->parm[parm].value_p[ind] = req->parm[parm].value_p[numbytes-ind-1];
req->parm[parm].value_p[numbytes-ind-1] = data;
}
}
req->krp->krp_param[parm].crp_nbits = numbytes*8;
}
/* Deal with any special results and cleanups */
switch (req->krp->krp_op) {
case CRK_DSA_VERIFY:
DBG(("CRK_DSA_VERIFY: result=%d\n", req->op.dsa.verifyok));
/* return 0 for verify ok, 1 for verify failed */
req->krp->krp_status = req->op.dsa.verifyok ? 0 : 1;
res = N8_DSAFreeKey(&req->op.dsa.key);
if (res != N8_STATUS_OK) {
printf("%s: N8_DSAFreeKey failed, error=%d\n",
__func__, res);
}
break;
case CRK_DSA_SIGN:
res = N8_DSAFreeKey(&req->op.dsa.key);
if (res != N8_STATUS_OK) {
printf("%s: N8_DSAFreeKey failed, error=%d\n",
__func__, res);
}
req->krp->krp_status = 0;
break;
case CRK_DH_COMPUTE_KEY:
res = N8_DHFreeKey(&req->op.dh.key);
if (res != N8_STATUS_OK) {
printf("%s: N8_DHFreeKey failed, error=%d\n",
__func__, res);
}
req->krp->krp_status = 0;
break;
case CRK_MOD_EXP_CRT:
res = N8_RSAFreeKey(&req->op.rsa.key);
if (res != N8_STATUS_OK) {
printf("%s: N8_RSAFreeKey failed, error=%d\n",
__func__, res);
}
req->krp->krp_status = 0;
break;
default:
req->krp->krp_status = 0;
break;
}
/* Done - let the user app know */
crypto_kdone(req->krp);
req->krp = NULL;
free(req, M_DEVBUF); /* XXX replace with pool */
} else {
printf("%s: op failed, status=%d\n", __func__, status);
req->krp->krp_status = n8_map_errno(status);
req->error = status;
}
}
/**********************************************************************
* FUNCTION: n8_kcallback_setup(void *arg, N8_Status_t status)
* DESCRIPTION: Interrupt handler for N8 key operation setup.
* This handler is called when the N8 key initialization
* operation completes. If the initialization was
* successful then the final N8 operation is started
* with the n8_kcallback_finish() handler set to be called
* on completion.
*
* If the status was an error then it is noted for later.
* This handler will be invoked a second time by the N8 once
* the operation has been cleaned up (status will be ok),
* at which time the error is passed back to the application.
* INPUTS: arg - pointer to the key operation request data
* to be a multiple of 8).
* status - result of the operation.
* RETURNS: none.
**********************************************************************/
static void
n8_kcallback_setup(void *arg, N8_Status_t status)
{
n8_kreq_t *req=arg;
N8_Event_t event;
int res;
DBG(("%s status %d\n", __func__, status));
if (req->krp == NULL) {
printf("%s called with NULL krp\n", __func__);
return;
}
if (status == N8_STATUS_OK) {
/* was there an earlier error? */
if (req->error) {
/* Yes - we're done then. */
printf("%s: finishing op, error was %d\n", __func__, req->error);
if (req->krp->krp_op == CRK_DSA_VERIFY) {
/* the CRK_DSA_VERIFY result semantics
* return 1 for verify ok, 0 for verify failed,
* and -1 for any other errors
*/
req->krp->krp_status = -1;
} else {
/* the rest of the operations return an ERRNO */
req->krp->krp_status = n8_map_errno(req->error);
}
crypto_kdone(req->krp);
req->krp = NULL;
free(req, M_DEVBUF); /* use a pool... */
return;
}
/* kick off the finishing op */
event.usrCallback = n8_kcallback_finish;
event.usrData = (void *)req;
switch (req->krp->krp_op) {
case CRK_DSA_SIGN:
res = N8_DSASign(&req->op.dsa.key,
req->parm[NSP_DSA_SIGN_DIGEST].value_p,
req->parm[NSP_DSA_SIGN_RVALUE].value_p,
req->parm[NSP_DSA_SIGN_SVALUE].value_p,
&event);
if (res != N8_STATUS_OK) {
printf("%s: N8_DSASign failed, error = %d\n", __func__, res);
req->krp->krp_status = n8_map_errno(res);
crypto_kdone(req->krp);
req->krp = NULL;
free(req, M_DEVBUF); /* XXX use a pool... */
}
break;
case CRK_DSA_VERIFY:
res = N8_DSAVerify(&req->op.dsa.key,
req->parm[NSP_DSA_VERIFY_DIGEST].value_p,
req->parm[NSP_DSA_VERIFY_RVALUE].value_p,
req->parm[NSP_DSA_VERIFY_SVALUE].value_p,
&req->op.dsa.verifyok,
&event);
if (res != N8_STATUS_OK) {
printf("%s: N8_DSAVerify failed, error = %d\n", __func__, res);
req->krp->krp_status = n8_map_errno(res);
crypto_kdone(req->krp);
req->krp = NULL;
free(req, M_DEVBUF); /* XXX use a pool... */
}
break;
case CRK_DH_COMPUTE_KEY:
DBG(("N8_DHCompute: PRIV=%08x %08x\n",
((uint32_t *)req->parm[NSP_DH_COMPUTE_KEY_PRIV].value_p)[0],
((uint32_t *)req->parm[NSP_DH_COMPUTE_KEY_PRIV].value_p)[1]));
/* KEY = B^a % p, a and p already in dh.key */
res = N8_DHCompute(&req->op.dh.key,
NULL, /* already have PUB key from init */
req->parm[NSP_DH_COMPUTE_KEY_PRIV].value_p,
req->parm[NSP_DH_COMPUTE_KEY_K].value_p,
&event);
if (res != N8_STATUS_OK) {
printf("%s: N8_DHCompute failed, error = %d\n", __func__, res);
req->krp->krp_status = n8_map_errno(res);
crypto_kdone(req->krp);
req->krp = NULL;
free(req, M_DEVBUF); /* XXX use a pool... */
}
break;
default: /* coding error - shouldn't reach here */
printf("%s: got unexpected krp_op %d\n", __func__, req->krp->krp_op);
req->krp->krp_status = ENODEV;
crypto_kdone(req->krp);
req->krp = NULL;
free(req, M_DEVBUF); /* XXX use a pool... */
}
} else {
printf("n8_kcallback: op failed, status=%d\n", status);
req->krp->krp_status = status; /* XXX translate to errno */
req->error = status;
}
}
/**********************************************************************
* FUNCTION: check_key_parms(*krp)
* DESCRIPTION: Check that each of the bignum parameters supplied by the
* key operation are valid for the operation.
* i.e. the number of input and output parameters is correct,
* and all of the bignum parameters are with the appropraite
* size range.
* INPUTS: krp - opencrypto key operation description
* RETURNS: 0 - ok
* ENODEV - invalid key operation
* EINVAL - invalid number of input or output parameters
* ERANGE - one or more parameters are outside
* the range supported for big-numbers.
**********************************************************************/
static int
check_key_parms(struct cryptkop *krp)
{
int ind;
if (krp->krp_op > CRK_ALGORITHM_MAX) {
printf("nsp: invalid crypto key op %d\n", krp->krp_op);
return ENODEV;
}
if (krp->krp_iparams != crk_def[krp->krp_op].iparmcount) {
printf("nsp: %s input params %d != %d\n",
crk_def[krp->krp_op].name,
krp->krp_iparams,
crk_def[krp->krp_op].iparmcount);
return EINVAL;
}
if (krp->krp_oparams != crk_def[krp->krp_op].oparmcount) {
printf("nsp: %s output params %d != %d\n",
crk_def[krp->krp_op].name,
krp->krp_oparams,
crk_def[krp->krp_op].oparmcount);
return EINVAL;
}
for (ind=0; ind<(krp->krp_iparams + krp->krp_oparams); ind++) {
/* is the parameter a bignum? */
if (crk_def[krp->krp_op].bignums & BN_ARG(ind)) {
/* check its size */
if (krp->krp_param[ind].crp_nbits > (NSP_MAX_KEYLEN*8)) {
printf("n8_kprocess: %s - param %d too large (%d bits)\n",
crk_def[krp->krp_op].name,
ind,
krp->krp_param[ind].crp_nbits);
return ERANGE;
}
}
}
return 0;
}
/**********************************************************************
* FUNCTION: n8_kprocess(*arg, *krp, hint)
* DESCRIPTION: The opencrypto key operation handler. This function
* expects to be called when the user app requests a
* key operation.
* It kicks off the appopriate N8 async operation
* to handle the request.
* INPUTS: arg - N8 device softc
* krp - opencrypto key operation description
* hint - not used.
* RETURNS: 0 - ok
* else an errno value
**********************************************************************/
static int
n8_kprocess(void *arg, struct cryptkop *krp, int hint)
{
struct nsp_softc *sc;
N8_Event_t event;
n8_kreq_t *req; /* to hold result data */
int res=0;
int ind;
sc = arg;
if ((krp == NULL) || (krp->krp_callback == NULL))
return (EINVAL);
if (sc == NULL) {
printf("n8_kprocess: error - sc == NULL\n");
return EINVAL;
}
DBG(("n8_kprocess op %d, iparams %d, oparams %d, hid 0x%x\n",
krp->krp_op,
krp->krp_iparams,
krp->krp_oparams,
krp->krp_hid));
/* Q. Does the final byte need to be masked?
* Q. Does the number need to be re-aligned?
*/
/* opencrypto bignum format:
* possibly a little-endian byte stream.
*
* N8 bignum format:
* an array of 256 words by 128 bits per operand
*
* N8 api bignum format:
* a network byte order string (big-endian).
*
*
* OpenSSL bignum:
* an array n of integers, with element n[0]
* containing the least-significant word of
* the bignum (word size is BN_BITS2 bits,
* which is 64, 32, 16, or 8 depending on machine
* architecture size of ulong).
* The elements are in little-endian byte order.
* The bignum includes a boolean to flag the number
* as negative (bn.neg).
*
*
* So, conversion from little-endian OpenSSL bignum
* to N8 api bignum requires the OpenSSL elements to be
* reversed, and the bytes in each element to be swapped.
*
* opencrypto BN -> N8 api BN:
* reverse the byte stream.
* If the number of bits is not a multiple of 8,
* will need to shift the final byte and pad with
* 0 bits.
*/
res = check_key_parms(krp);
if (res != 0) {
krp->krp_status = res;
crypto_kdone(krp);
return 0;
}
/* setup a buffer to track this request and provide the callback handler
* with what it needs to complete it.
*/
req = (n8_kreq_t *)malloc(sizeof(n8_kreq_t), M_DEVBUF, M_NOWAIT);
if (req == NULL) {
printf("n8_kprocess: failed to alloc req (size=%d)\n", sizeof(n8_kreq_t));
krp->krp_status = ENOMEM;
crypto_kdone(krp);
return 0;
}
req->magic = 0xFEEDFEED;
/* convert input arguments from little-endian to big-endian */
/* what about has values (e.g. DSA digests, etc) */
DBG(("op %s, %d input %d output, bignums 0x%02x\n",
crk_def[krp->krp_op].name,
crk_def[krp->krp_op].iparmcount,
crk_def[krp->krp_op].oparmcount,
crk_def[krp->krp_op].bignums));
for (ind=0; ind<krp->krp_iparams; ind++) {
req->parm[ind].value_p = &req->value[ind][0];
if (crk_def[krp->krp_op].bignums & BN_ARG(ind)) {
req->parm[ind].lengthBytes =
bn_le_to_be(krp->krp_param[ind].crp_p,
krp->krp_param[ind].crp_nbits,
req->parm[ind].value_p);
} else {
/* unknown - defined by key algorithm */
req->parm[ind].lengthBytes = 0;
}
DBG(("iparm %d length %d, ptr %p\n",
ind, req->parm[ind].lengthBytes,
req->parm[ind].value_p));
}
/* fill in output bignums */
/* Results are converted to little-endian after the op completes. */
for (ind=krp->krp_iparams;
ind < (krp->krp_iparams + krp->krp_oparams);
ind++) {
req->parm[ind].value_p = krp->krp_param[ind].crp_p;
req->parm[ind].lengthBytes =
(krp->krp_param[ind].crp_nbits+7)/8;
DBG(("oparm %d bits -> %d bytes\n",
krp->krp_param[ind].crp_nbits,
req->parm[ind].lengthBytes));
DBG(("oparm %d length %d, ptr %p\n",
ind, req->parm[ind].lengthBytes,
req->parm[ind].value_p));
}
/* this only supports a single result... DSA_SIGN needs two */
req->error = N8_STATUS_OK;
req->krp = krp;
/* setup N8 call to call n8_kcallback with the request */
switch (krp->krp_op) {
case CRK_DSA_SIGN:
/* inputs: dgst dsa->p dsa->q dsa->g dsa->priv_key */
event.usrCallback = n8_kcallback_setup;
event.usrData = (void *)req;
/*
* N8_DSAInitializeKey()
* 1) Put p in the parameter block.
* 2) Put q in the Parameter block.
* 3) Put privateKey in the parameter block.
* 4) Compute gR mod p and put it in the parameter block.
* 5) Compute cp = -(p[0]^-1 mod 2^128 and
* put it in the parameter block.
*/
req->op.dsa.keymaterial.privateKey = req->parm[NSP_DSA_SIGN_X];
req->op.dsa.keymaterial.p = req->parm[NSP_DSA_SIGN_P];
req->op.dsa.keymaterial.q = req->parm[NSP_DSA_SIGN_Q];
req->op.dsa.keymaterial.g = req->parm[NSP_DSA_SIGN_G];
req->op.dsa.keymaterial.unitID = N8_ANY_UNIT;
res = N8_DSAInitializeKey(&req->op.dsa.key, N8_PRIVATE,
&req->op.dsa.keymaterial, &event);
if (res != N8_STATUS_OK) {
free(req, M_DEVBUF);
printf("%s: N8_DSAInitializeKey failed, err=%d\n", __func__, res);
krp->krp_status = res;
crypto_kdone(krp);
return 0;
}
break;
case CRK_DSA_VERIFY:
/* inputs: dgst dsa->p dsa->q dsa->g dsa->pub_key sig->r sig->s */
event.usrCallback = n8_kcallback_setup;
event.usrData = (void *)req;
/*
* N8_DSAInitializeKey()
* 1) Put p in the parameter block.
* 2) Put q in the Parameter block.
* 3) Put privateKey in the parameter block.
* 4) Compute gR mod p and put it in the parameter block.
* 5) Compute cp = -(p[0]^-1 mod 2^128 and
* put it in the parameter block.
*/
req->op.dsa.keymaterial.publicKey = req->parm[NSP_DSA_VERIFY_Y];
req->op.dsa.keymaterial.p = req->parm[NSP_DSA_VERIFY_P];
req->op.dsa.keymaterial.q = req->parm[NSP_DSA_VERIFY_Q];
req->op.dsa.keymaterial.g = req->parm[NSP_DSA_VERIFY_G];
req->op.dsa.keymaterial.unitID = N8_ANY_UNIT;
res = N8_DSAInitializeKey(&req->op.dsa.key, N8_PUBLIC,
&req->op.dsa.keymaterial, &event);
if (res != N8_STATUS_OK) {
free(req, M_DEVBUF);
printf("%s: N8_DSAInitializeKey failed, err=%d\n", __func__, res);
krp->krp_status = n8_map_errno(res);
crypto_kdone(krp);
return 0;
}
break;
case CRK_DH_COMPUTE_KEY:
{
/* inputs: dh->priv_key pub_key dh->p (prime modulus) key output g^x */
/* key = pub_key ^ priv_key % p,
* where pub_key is from second party, derived as pub_key = g^b % p,
* where b is the second parties private key
*/
event.usrCallback = n8_kcallback_setup;
event.usrData = (void *)req;
req->op.dh.keymaterial.p =
req->parm[NSP_DH_COMPUTE_KEY_P].value_p;
req->op.dh.keymaterial.g =
req->parm[NSP_DH_COMPUTE_KEY_PUB].value_p;
req->op.dh.keymaterial.modulusSize =
req->parm[NSP_DH_COMPUTE_KEY_P].lengthBytes;
req->op.dh.keymaterial.unitID = N8_ANY_UNIT;
DBG(("N8_DHInitializeKey: P=%08x %08x, PUB=%08x %08x\n",
((uint32_t *)req->parm[NSP_DH_COMPUTE_KEY_P].value_p)[0],
((uint32_t *)req->parm[NSP_DH_COMPUTE_KEY_P].value_p)[1],
((uint32_t *)req->parm[NSP_DH_COMPUTE_KEY_PUB].value_p)[0],
((uint32_t *)req->parm[NSP_DH_COMPUTE_KEY_PUB].value_p)[1]));
res = N8_DHInitializeKey(&req->op.dh.key,
&req->op.dh.keymaterial, &event);
if (res != N8_STATUS_OK) {
free(req, M_DEVBUF);
printf("%s: N8_DHInitializeKey failed, err=%d\n", __func__, res);
krp->krp_status = n8_map_errno(res);
crypto_kdone(krp);
return 0;
}
break;
}
case CRK_MOD_EXP:
/* inputs: a^p % m */
event.usrCallback = n8_kcallback_finish;
event.usrData = (void *)req;
res = N8_ModExponentiate(
&req->parm[NSP_MOD_EXP_A],
&req->parm[NSP_MOD_EXP_B],
&req->parm[NSP_MOD_EXP_M],
&req->parm[NSP_MOD_EXP_R0],
N8_ANY_UNIT,
&event);
if (res != N8_STATUS_OK) {
free(req, M_DEVBUF);
printf("N8_ModExponentiate failed, err=%d\n",res);
krp->krp_status = n8_map_errno(res);
crypto_kdone(krp);
return 0;
}
break;
case CRK_MOD_EXP_CRT:
/* inputs: rsa->p rsa->q I rsa->dmp1 rsa->dmq1 rsa->iqmp */
/* compute r0 = r0 ^ I mod rsa->n
* inputs from OpenSSL:rsa_mod_exp(r0, I, rsa)
* are p, q, I, dmp1 (DP), dmq1 (DQ), iqmp (QINV), r0.
*
* N8 requires at least N to do this operation,
* and N is not passed in by OpenSSL.
* Q. Can OpenSSL provide it?
* Q. Add another opencrypto op for this?
*/
/* Try doing this from a higher level so that N and D can
* be passed in?
* Construct the operation from smaller operations (slower)?
*/
krp->krp_status = EOPNOTSUPP;
crypto_kdone(krp);
break;
case CRK_MOD_ADD:
/*
* inputs: A B Modulus
* result = (A + B) mod Modulus
*/
event.usrCallback = n8_kcallback_finish;
event.usrData = (void *)req;
res = N8_ModAdd(
&req->parm[NSP_MOD_ADD_A],
&req->parm[NSP_MOD_ADD_B],
&req->parm[NSP_MOD_ADD_M],
&req->parm[NSP_MOD_ADD_R0],
N8_ANY_UNIT,
&event);
if (res != N8_STATUS_OK) {
free(req, M_DEVBUF);
printf("N8_ModAdd failed, err=%d\n",res);
krp->krp_status = n8_map_errno(res);
crypto_kdone(krp);
return 0;
}
break;
case CRK_MOD_ADDINV:
/*
* inputs: A Modulus
* result = -A mod Modulus
*/
event.usrCallback = n8_kcallback_finish;
event.usrData = (void *)req;
res = N8_ModAdditiveInverse(
&req->parm[NSP_MOD_ADDINV_A],
&req->parm[NSP_MOD_ADDINV_M],
&req->parm[NSP_MOD_ADDINV_R0],
N8_ANY_UNIT,
&event);
if (res != N8_STATUS_OK) {
free(req, M_DEVBUF);
printf("N8_ModAdditiveInverse failed, err=%d\n",res);
krp->krp_status = n8_map_errno(res);
crypto_kdone(krp);
return 0;
}
break;
case CRK_MOD_SUB:
/*
* inputs: A B Modulus
* result = (A - B) mod Modulus
*/
event.usrCallback = n8_kcallback_finish;
event.usrData = (void *)req;
res = N8_ModSubtract(
&req->parm[NSP_MOD_SUB_A],
&req->parm[NSP_MOD_SUB_B],
&req->parm[NSP_MOD_SUB_M],
&req->parm[NSP_MOD_SUB_R0],
N8_ANY_UNIT,
&event);
if (res != N8_STATUS_OK) {
free(req, M_DEVBUF);
printf("N8_ModSubtract failed, err=%d\n",res);
krp->krp_status = n8_map_errno(res);
crypto_kdone(krp);
return 0;
}
break;
case CRK_MOD_MULT:
/*
* inputs: A B Modulus
* result = (A * B) mod Modulus
*/
event.usrCallback = n8_kcallback_finish;
event.usrData = (void *)req;
res = N8_ModMultiply(
&req->parm[NSP_MOD_MULT_A],
&req->parm[NSP_MOD_MULT_B],
&req->parm[NSP_MOD_MULT_M],
&req->parm[NSP_MOD_MULT_R0],
N8_ANY_UNIT,
&event);
if (res != N8_STATUS_OK) {
free(req, M_DEVBUF);
printf("N8_ModMultiply failed, err=%d\n",res);
krp->krp_status = n8_map_errno(res);
crypto_kdone(krp);
return 0;
}
break;
case CRK_MOD_MULTINV:
/*
* inputs: A Modulus
* result = (A ^ -1) mod Modulus
*/
event.usrCallback = n8_kcallback_finish;
event.usrData = (void *)req;
res = N8_ModMultiplicativeInverse(
&req->parm[NSP_MOD_MULTINV_A],
&req->parm[NSP_MOD_MULTINV_M],
&req->parm[NSP_MOD_MULTINV_R0],
N8_ANY_UNIT,
&event);
if (res != N8_STATUS_OK) {
free(req, M_DEVBUF);
printf("N8_ModMultiplicativeInverse failed, err=%d\n",res);
krp->krp_status = n8_map_errno(res);
crypto_kdone(krp);
return 0;
}
break;
case CRK_MOD:
/*
* inputs: A Modulus
* result = A mod Modulus
*/
event.usrCallback = n8_kcallback_finish;
event.usrData = (void *)req;
res = N8_Modulus(
&req->parm[NSP_MODULUS_A],
&req->parm[NSP_MODULUS_M],
&req->parm[NSP_MODULUS_R0],
N8_ANY_UNIT,
&event);
if (res != N8_STATUS_OK) {
free(req, M_DEVBUF);
printf("N8_Modulus failed, err=%d\n",res);
krp->krp_status = n8_map_errno(res);
crypto_kdone(krp);
return 0;
}
break;
default:
printf("nsp: n8_kprocess: invalid op %d\n", krp->krp_op);
krp->krp_status = EOPNOTSUPP;
crypto_kdone(krp);
break;
}
return res;
}
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