--- /dev/null
+/*
+ * An OCF module that uses Intels IXP CryptACC API to do the crypto.
+ * This driver requires the IXP400 Access Library that is available
+ * from Intel in order to operate (or compile).
+ *
+ * Written by David McCullough <david_mccullough@mcafee.com>
+ * Copyright (C) 2006-2010 David McCullough
+ * Copyright (C) 2004-2005 Intel Corporation.
+ *
+ * LICENSE TERMS
+ *
+ * The free distribution and use of this software in both source and binary
+ * form is allowed (with or without changes) provided that:
+ *
+ * 1. distributions of this source code include the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ *
+ * 2. distributions in binary form include the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other associated materials;
+ *
+ * 3. the copyright holder's name is not used to endorse products
+ * built using this software without specific written permission.
+ *
+ * ALTERNATIVELY, provided that this notice is retained in full, this product
+ * may be distributed under the terms of the GNU General Public License (GPL),
+ * in which case the provisions of the GPL apply INSTEAD OF those given above.
+ *
+ * DISCLAIMER
+ *
+ * This software is provided 'as is' with no explicit or implied warranties
+ * in respect of its properties, including, but not limited to, correctness
+ * and/or fitness for purpose.
+ */
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/crypto.h>
+#include <linux/interrupt.h>
+#include <asm/scatterlist.h>
+
+#include <IxTypes.h>
+#include <IxOsBuffMgt.h>
+#include <IxNpeDl.h>
+#include <IxCryptoAcc.h>
+#include <IxQMgr.h>
+#include <IxOsServices.h>
+#include <IxOsCacheMMU.h>
+
+#include <cryptodev.h>
+#include <uio.h>
+
+#ifndef IX_MBUF_PRIV
+#define IX_MBUF_PRIV(x) ((x)->priv)
+#endif
+
+struct ixp_data;
+
+struct ixp_q {
+ struct list_head ixp_q_list;
+ struct ixp_data *ixp_q_data;
+ struct cryptop *ixp_q_crp;
+ struct cryptodesc *ixp_q_ccrd;
+ struct cryptodesc *ixp_q_acrd;
+ IX_MBUF ixp_q_mbuf;
+ UINT8 *ixp_hash_dest; /* Location for hash in client buffer */
+ UINT8 *ixp_hash_src; /* Location of hash in internal buffer */
+ unsigned char ixp_q_iv_data[IX_CRYPTO_ACC_MAX_CIPHER_IV_LENGTH];
+ unsigned char *ixp_q_iv;
+};
+
+struct ixp_data {
+ int ixp_registered; /* is the context registered */
+ int ixp_crd_flags; /* detect direction changes */
+
+ int ixp_cipher_alg;
+ int ixp_auth_alg;
+
+ UINT32 ixp_ctx_id;
+ UINT32 ixp_hash_key_id; /* used when hashing */
+ IxCryptoAccCtx ixp_ctx;
+ IX_MBUF ixp_pri_mbuf;
+ IX_MBUF ixp_sec_mbuf;
+
+ struct work_struct ixp_pending_work;
+ struct work_struct ixp_registration_work;
+ struct list_head ixp_q; /* unprocessed requests */
+};
+
+#ifdef __ixp46X
+
+#define MAX_IOP_SIZE 64 /* words */
+#define MAX_OOP_SIZE 128
+
+#define MAX_PARAMS 3
+
+struct ixp_pkq {
+ struct list_head pkq_list;
+ struct cryptkop *pkq_krp;
+
+ IxCryptoAccPkeEauInOperands pkq_op;
+ IxCryptoAccPkeEauOpResult pkq_result;
+
+ UINT32 pkq_ibuf0[MAX_IOP_SIZE];
+ UINT32 pkq_ibuf1[MAX_IOP_SIZE];
+ UINT32 pkq_ibuf2[MAX_IOP_SIZE];
+ UINT32 pkq_obuf[MAX_OOP_SIZE];
+};
+
+static LIST_HEAD(ixp_pkq); /* current PK wait list */
+static struct ixp_pkq *ixp_pk_cur;
+static spinlock_t ixp_pkq_lock;
+
+#endif /* __ixp46X */
+
+static int ixp_blocked = 0;
+
+static int32_t ixp_id = -1;
+static struct ixp_data **ixp_sessions = NULL;
+static u_int32_t ixp_sesnum = 0;
+
+static int ixp_process(device_t, struct cryptop *, int);
+static int ixp_newsession(device_t, u_int32_t *, struct cryptoini *);
+static int ixp_freesession(device_t, u_int64_t);
+#ifdef __ixp46X
+static int ixp_kprocess(device_t, struct cryptkop *krp, int hint);
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+static kmem_cache_t *qcache;
+#else
+static struct kmem_cache *qcache;
+#endif
+
+#define debug ixp_debug
+static int ixp_debug = 0;
+module_param(ixp_debug, int, 0644);
+MODULE_PARM_DESC(ixp_debug, "Enable debug");
+
+static int ixp_init_crypto = 1;
+module_param(ixp_init_crypto, int, 0444); /* RO after load/boot */
+MODULE_PARM_DESC(ixp_init_crypto, "Call ixCryptoAccInit (default is 1)");
+
+static void ixp_process_pending(void *arg);
+static void ixp_registration(void *arg);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+static void ixp_process_pending_wq(struct work_struct *work);
+static void ixp_registration_wq(struct work_struct *work);
+#endif
+
+/*
+ * dummy device structure
+ */
+
+static struct {
+ softc_device_decl sc_dev;
+} ixpdev;
+
+static device_method_t ixp_methods = {
+ /* crypto device methods */
+ DEVMETHOD(cryptodev_newsession, ixp_newsession),
+ DEVMETHOD(cryptodev_freesession,ixp_freesession),
+ DEVMETHOD(cryptodev_process, ixp_process),
+#ifdef __ixp46X
+ DEVMETHOD(cryptodev_kprocess, ixp_kprocess),
+#endif
+};
+
+/*
+ * Generate a new software session.
+ */
+static int
+ixp_newsession(device_t dev, u_int32_t *sid, struct cryptoini *cri)
+{
+ struct ixp_data *ixp;
+ u_int32_t i;
+#define AUTH_LEN(cri, def) \
+ (cri->cri_mlen ? cri->cri_mlen : (def))
+
+ dprintk("%s():alg %d\n", __FUNCTION__,cri->cri_alg);
+ if (sid == NULL || cri == NULL) {
+ dprintk("%s,%d - EINVAL\n", __FILE__, __LINE__);
+ return EINVAL;
+ }
+
+ if (ixp_sessions) {
+ for (i = 1; i < ixp_sesnum; i++)
+ if (ixp_sessions[i] == NULL)
+ break;
+ } else
+ i = 1; /* NB: to silence compiler warning */
+
+ if (ixp_sessions == NULL || i == ixp_sesnum) {
+ struct ixp_data **ixpd;
+
+ if (ixp_sessions == NULL) {
+ i = 1; /* We leave ixp_sessions[0] empty */
+ ixp_sesnum = CRYPTO_SW_SESSIONS;
+ } else
+ ixp_sesnum *= 2;
+
+ ixpd = kmalloc(ixp_sesnum * sizeof(struct ixp_data *), SLAB_ATOMIC);
+ if (ixpd == NULL) {
+ /* Reset session number */
+ if (ixp_sesnum == CRYPTO_SW_SESSIONS)
+ ixp_sesnum = 0;
+ else
+ ixp_sesnum /= 2;
+ dprintk("%s,%d: ENOBUFS\n", __FILE__, __LINE__);
+ return ENOBUFS;
+ }
+ memset(ixpd, 0, ixp_sesnum * sizeof(struct ixp_data *));
+
+ /* Copy existing sessions */
+ if (ixp_sessions) {
+ memcpy(ixpd, ixp_sessions,
+ (ixp_sesnum / 2) * sizeof(struct ixp_data *));
+ kfree(ixp_sessions);
+ }
+
+ ixp_sessions = ixpd;
+ }
+
+ ixp_sessions[i] = (struct ixp_data *) kmalloc(sizeof(struct ixp_data),
+ SLAB_ATOMIC);
+ if (ixp_sessions[i] == NULL) {
+ ixp_freesession(NULL, i);
+ dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__);
+ return ENOBUFS;
+ }
+
+ *sid = i;
+
+ ixp = ixp_sessions[i];
+ memset(ixp, 0, sizeof(*ixp));
+
+ ixp->ixp_cipher_alg = -1;
+ ixp->ixp_auth_alg = -1;
+ ixp->ixp_ctx_id = -1;
+ INIT_LIST_HEAD(&ixp->ixp_q);
+
+ ixp->ixp_ctx.useDifferentSrcAndDestMbufs = 0;
+
+ while (cri) {
+ switch (cri->cri_alg) {
+ case CRYPTO_DES_CBC:
+ ixp->ixp_cipher_alg = cri->cri_alg;
+ ixp->ixp_ctx.cipherCtx.cipherAlgo = IX_CRYPTO_ACC_CIPHER_DES;
+ ixp->ixp_ctx.cipherCtx.cipherMode = IX_CRYPTO_ACC_MODE_CBC;
+ ixp->ixp_ctx.cipherCtx.cipherKeyLen = (cri->cri_klen + 7) / 8;
+ ixp->ixp_ctx.cipherCtx.cipherBlockLen = IX_CRYPTO_ACC_DES_BLOCK_64;
+ ixp->ixp_ctx.cipherCtx.cipherInitialVectorLen =
+ IX_CRYPTO_ACC_DES_IV_64;
+ memcpy(ixp->ixp_ctx.cipherCtx.key.cipherKey,
+ cri->cri_key, (cri->cri_klen + 7) / 8);
+ break;
+
+ case CRYPTO_3DES_CBC:
+ ixp->ixp_cipher_alg = cri->cri_alg;
+ ixp->ixp_ctx.cipherCtx.cipherAlgo = IX_CRYPTO_ACC_CIPHER_3DES;
+ ixp->ixp_ctx.cipherCtx.cipherMode = IX_CRYPTO_ACC_MODE_CBC;
+ ixp->ixp_ctx.cipherCtx.cipherKeyLen = (cri->cri_klen + 7) / 8;
+ ixp->ixp_ctx.cipherCtx.cipherBlockLen = IX_CRYPTO_ACC_DES_BLOCK_64;
+ ixp->ixp_ctx.cipherCtx.cipherInitialVectorLen =
+ IX_CRYPTO_ACC_DES_IV_64;
+ memcpy(ixp->ixp_ctx.cipherCtx.key.cipherKey,
+ cri->cri_key, (cri->cri_klen + 7) / 8);
+ break;
+
+ case CRYPTO_RIJNDAEL128_CBC:
+ ixp->ixp_cipher_alg = cri->cri_alg;
+ ixp->ixp_ctx.cipherCtx.cipherAlgo = IX_CRYPTO_ACC_CIPHER_AES;
+ ixp->ixp_ctx.cipherCtx.cipherMode = IX_CRYPTO_ACC_MODE_CBC;
+ ixp->ixp_ctx.cipherCtx.cipherKeyLen = (cri->cri_klen + 7) / 8;
+ ixp->ixp_ctx.cipherCtx.cipherBlockLen = 16;
+ ixp->ixp_ctx.cipherCtx.cipherInitialVectorLen = 16;
+ memcpy(ixp->ixp_ctx.cipherCtx.key.cipherKey,
+ cri->cri_key, (cri->cri_klen + 7) / 8);
+ break;
+
+ case CRYPTO_MD5:
+ case CRYPTO_MD5_HMAC:
+ ixp->ixp_auth_alg = cri->cri_alg;
+ ixp->ixp_ctx.authCtx.authAlgo = IX_CRYPTO_ACC_AUTH_MD5;
+ ixp->ixp_ctx.authCtx.authDigestLen = AUTH_LEN(cri, MD5_HASH_LEN);
+ ixp->ixp_ctx.authCtx.aadLen = 0;
+ /* Only MD5_HMAC needs a key */
+ if (cri->cri_alg == CRYPTO_MD5_HMAC) {
+ ixp->ixp_ctx.authCtx.authKeyLen = (cri->cri_klen + 7) / 8;
+ if (ixp->ixp_ctx.authCtx.authKeyLen >
+ sizeof(ixp->ixp_ctx.authCtx.key.authKey)) {
+ printk(
+ "ixp4xx: Invalid key length for MD5_HMAC - %d bits\n",
+ cri->cri_klen);
+ ixp_freesession(NULL, i);
+ return EINVAL;
+ }
+ memcpy(ixp->ixp_ctx.authCtx.key.authKey,
+ cri->cri_key, (cri->cri_klen + 7) / 8);
+ }
+ break;
+
+ case CRYPTO_SHA1:
+ case CRYPTO_SHA1_HMAC:
+ ixp->ixp_auth_alg = cri->cri_alg;
+ ixp->ixp_ctx.authCtx.authAlgo = IX_CRYPTO_ACC_AUTH_SHA1;
+ ixp->ixp_ctx.authCtx.authDigestLen = AUTH_LEN(cri, SHA1_HASH_LEN);
+ ixp->ixp_ctx.authCtx.aadLen = 0;
+ /* Only SHA1_HMAC needs a key */
+ if (cri->cri_alg == CRYPTO_SHA1_HMAC) {
+ ixp->ixp_ctx.authCtx.authKeyLen = (cri->cri_klen + 7) / 8;
+ if (ixp->ixp_ctx.authCtx.authKeyLen >
+ sizeof(ixp->ixp_ctx.authCtx.key.authKey)) {
+ printk(
+ "ixp4xx: Invalid key length for SHA1_HMAC - %d bits\n",
+ cri->cri_klen);
+ ixp_freesession(NULL, i);
+ return EINVAL;
+ }
+ memcpy(ixp->ixp_ctx.authCtx.key.authKey,
+ cri->cri_key, (cri->cri_klen + 7) / 8);
+ }
+ break;
+
+ default:
+ printk("ixp: unknown algo 0x%x\n", cri->cri_alg);
+ ixp_freesession(NULL, i);
+ return EINVAL;
+ }
+ cri = cri->cri_next;
+ }
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ INIT_WORK(&ixp->ixp_pending_work, ixp_process_pending_wq);
+ INIT_WORK(&ixp->ixp_registration_work, ixp_registration_wq);
+#else
+ INIT_WORK(&ixp->ixp_pending_work, ixp_process_pending, ixp);
+ INIT_WORK(&ixp->ixp_registration_work, ixp_registration, ixp);
+#endif
+
+ return 0;
+}
+
+
+/*
+ * Free a session.
+ */
+static int
+ixp_freesession(device_t dev, u_int64_t tid)
+{
+ u_int32_t sid = CRYPTO_SESID2LID(tid);
+
+ dprintk("%s()\n", __FUNCTION__);
+ if (sid > ixp_sesnum || ixp_sessions == NULL ||
+ ixp_sessions[sid] == NULL) {
+ dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__);
+ return EINVAL;
+ }
+
+ /* Silently accept and return */
+ if (sid == 0)
+ return 0;
+
+ if (ixp_sessions[sid]) {
+ if (ixp_sessions[sid]->ixp_ctx_id != -1) {
+ ixCryptoAccCtxUnregister(ixp_sessions[sid]->ixp_ctx_id);
+ ixp_sessions[sid]->ixp_ctx_id = -1;
+ }
+ kfree(ixp_sessions[sid]);
+ }
+ ixp_sessions[sid] = NULL;
+ if (ixp_blocked) {
+ ixp_blocked = 0;
+ crypto_unblock(ixp_id, CRYPTO_SYMQ);
+ }
+ return 0;
+}
+
+
+/*
+ * callback for when hash processing is complete
+ */
+
+static void
+ixp_hash_perform_cb(
+ UINT32 hash_key_id,
+ IX_MBUF *bufp,
+ IxCryptoAccStatus status)
+{
+ struct ixp_q *q;
+
+ dprintk("%s(%u, %p, 0x%x)\n", __FUNCTION__, hash_key_id, bufp, status);
+
+ if (bufp == NULL) {
+ printk("ixp: NULL buf in %s\n", __FUNCTION__);
+ return;
+ }
+
+ q = IX_MBUF_PRIV(bufp);
+ if (q == NULL) {
+ printk("ixp: NULL priv in %s\n", __FUNCTION__);
+ return;
+ }
+
+ if (status == IX_CRYPTO_ACC_STATUS_SUCCESS) {
+ /* On success, need to copy hash back into original client buffer */
+ memcpy(q->ixp_hash_dest, q->ixp_hash_src,
+ (q->ixp_q_data->ixp_auth_alg == CRYPTO_SHA1) ?
+ SHA1_HASH_LEN : MD5_HASH_LEN);
+ }
+ else {
+ printk("ixp: hash perform failed status=%d\n", status);
+ q->ixp_q_crp->crp_etype = EINVAL;
+ }
+
+ /* Free internal buffer used for hashing */
+ kfree(IX_MBUF_MDATA(&q->ixp_q_mbuf));
+
+ crypto_done(q->ixp_q_crp);
+ kmem_cache_free(qcache, q);
+}
+
+/*
+ * setup a request and perform it
+ */
+static void
+ixp_q_process(struct ixp_q *q)
+{
+ IxCryptoAccStatus status;
+ struct ixp_data *ixp = q->ixp_q_data;
+ int auth_off = 0;
+ int auth_len = 0;
+ int crypt_off = 0;
+ int crypt_len = 0;
+ int icv_off = 0;
+ char *crypt_func;
+
+ dprintk("%s(%p)\n", __FUNCTION__, q);
+
+ if (q->ixp_q_ccrd) {
+ if (q->ixp_q_ccrd->crd_flags & CRD_F_IV_EXPLICIT) {
+ q->ixp_q_iv = q->ixp_q_ccrd->crd_iv;
+ } else {
+ q->ixp_q_iv = q->ixp_q_iv_data;
+ crypto_copydata(q->ixp_q_crp->crp_flags, q->ixp_q_crp->crp_buf,
+ q->ixp_q_ccrd->crd_inject,
+ ixp->ixp_ctx.cipherCtx.cipherInitialVectorLen,
+ (caddr_t) q->ixp_q_iv);
+ }
+
+ if (q->ixp_q_acrd) {
+ auth_off = q->ixp_q_acrd->crd_skip;
+ auth_len = q->ixp_q_acrd->crd_len;
+ icv_off = q->ixp_q_acrd->crd_inject;
+ }
+
+ crypt_off = q->ixp_q_ccrd->crd_skip;
+ crypt_len = q->ixp_q_ccrd->crd_len;
+ } else { /* if (q->ixp_q_acrd) */
+ auth_off = q->ixp_q_acrd->crd_skip;
+ auth_len = q->ixp_q_acrd->crd_len;
+ icv_off = q->ixp_q_acrd->crd_inject;
+ }
+
+ if (q->ixp_q_crp->crp_flags & CRYPTO_F_SKBUF) {
+ struct sk_buff *skb = (struct sk_buff *) q->ixp_q_crp->crp_buf;
+ if (skb_shinfo(skb)->nr_frags) {
+ /*
+ * DAVIDM fix this limitation one day by using
+ * a buffer pool and chaining, it is not currently
+ * needed for current user/kernel space acceleration
+ */
+ printk("ixp: Cannot handle fragmented skb's yet !\n");
+ q->ixp_q_crp->crp_etype = ENOENT;
+ goto done;
+ }
+ IX_MBUF_MLEN(&q->ixp_q_mbuf) =
+ IX_MBUF_PKT_LEN(&q->ixp_q_mbuf) = skb->len;
+ IX_MBUF_MDATA(&q->ixp_q_mbuf) = skb->data;
+ } else if (q->ixp_q_crp->crp_flags & CRYPTO_F_IOV) {
+ struct uio *uiop = (struct uio *) q->ixp_q_crp->crp_buf;
+ if (uiop->uio_iovcnt != 1) {
+ /*
+ * DAVIDM fix this limitation one day by using
+ * a buffer pool and chaining, it is not currently
+ * needed for current user/kernel space acceleration
+ */
+ printk("ixp: Cannot handle more than 1 iovec yet !\n");
+ q->ixp_q_crp->crp_etype = ENOENT;
+ goto done;
+ }
+ IX_MBUF_MLEN(&q->ixp_q_mbuf) =
+ IX_MBUF_PKT_LEN(&q->ixp_q_mbuf) = uiop->uio_iov[0].iov_len;
+ IX_MBUF_MDATA(&q->ixp_q_mbuf) = uiop->uio_iov[0].iov_base;
+ } else /* contig buffer */ {
+ IX_MBUF_MLEN(&q->ixp_q_mbuf) =
+ IX_MBUF_PKT_LEN(&q->ixp_q_mbuf) = q->ixp_q_crp->crp_ilen;
+ IX_MBUF_MDATA(&q->ixp_q_mbuf) = q->ixp_q_crp->crp_buf;
+ }
+
+ IX_MBUF_PRIV(&q->ixp_q_mbuf) = q;
+
+ if (ixp->ixp_auth_alg == CRYPTO_SHA1 || ixp->ixp_auth_alg == CRYPTO_MD5) {
+ /*
+ * For SHA1 and MD5 hash, need to create an internal buffer that is big
+ * enough to hold the original data + the appropriate padding for the
+ * hash algorithm.
+ */
+ UINT8 *tbuf = NULL;
+
+ IX_MBUF_MLEN(&q->ixp_q_mbuf) = IX_MBUF_PKT_LEN(&q->ixp_q_mbuf) =
+ ((IX_MBUF_MLEN(&q->ixp_q_mbuf) * 8) + 72 + 511) / 8;
+ tbuf = kmalloc(IX_MBUF_MLEN(&q->ixp_q_mbuf), SLAB_ATOMIC);
+
+ if (IX_MBUF_MDATA(&q->ixp_q_mbuf) == NULL) {
+ printk("ixp: kmalloc(%u, SLAB_ATOMIC) failed\n",
+ IX_MBUF_MLEN(&q->ixp_q_mbuf));
+ q->ixp_q_crp->crp_etype = ENOMEM;
+ goto done;
+ }
+ memcpy(tbuf, &(IX_MBUF_MDATA(&q->ixp_q_mbuf))[auth_off], auth_len);
+
+ /* Set location in client buffer to copy hash into */
+ q->ixp_hash_dest =
+ &(IX_MBUF_MDATA(&q->ixp_q_mbuf))[auth_off + auth_len];
+
+ IX_MBUF_MDATA(&q->ixp_q_mbuf) = tbuf;
+
+ /* Set location in internal buffer for where hash starts */
+ q->ixp_hash_src = &(IX_MBUF_MDATA(&q->ixp_q_mbuf))[auth_len];
+
+ crypt_func = "ixCryptoAccHashPerform";
+ status = ixCryptoAccHashPerform(ixp->ixp_ctx.authCtx.authAlgo,
+ &q->ixp_q_mbuf, ixp_hash_perform_cb, 0, auth_len, auth_len,
+ &ixp->ixp_hash_key_id);
+ }
+ else {
+ crypt_func = "ixCryptoAccAuthCryptPerform";
+ status = ixCryptoAccAuthCryptPerform(ixp->ixp_ctx_id, &q->ixp_q_mbuf,
+ NULL, auth_off, auth_len, crypt_off, crypt_len, icv_off,
+ q->ixp_q_iv);
+ }
+
+ if (IX_CRYPTO_ACC_STATUS_SUCCESS == status)
+ return;
+
+ if (IX_CRYPTO_ACC_STATUS_QUEUE_FULL == status) {
+ q->ixp_q_crp->crp_etype = ENOMEM;
+ goto done;
+ }
+
+ printk("ixp: %s failed %u\n", crypt_func, status);
+ q->ixp_q_crp->crp_etype = EINVAL;
+
+done:
+ crypto_done(q->ixp_q_crp);
+ kmem_cache_free(qcache, q);
+}
+
+
+/*
+ * because we cannot process the Q from the Register callback
+ * we do it here on a task Q.
+ */
+
+static void
+ixp_process_pending(void *arg)
+{
+ struct ixp_data *ixp = arg;
+ struct ixp_q *q = NULL;
+
+ dprintk("%s(%p)\n", __FUNCTION__, arg);
+
+ if (!ixp)
+ return;
+
+ while (!list_empty(&ixp->ixp_q)) {
+ q = list_entry(ixp->ixp_q.next, struct ixp_q, ixp_q_list);
+ list_del(&q->ixp_q_list);
+ ixp_q_process(q);
+ }
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+static void
+ixp_process_pending_wq(struct work_struct *work)
+{
+ struct ixp_data *ixp = container_of(work, struct ixp_data, ixp_pending_work);
+ ixp_process_pending(ixp);
+}
+#endif
+
+/*
+ * callback for when context registration is complete
+ */
+
+static void
+ixp_register_cb(UINT32 ctx_id, IX_MBUF *bufp, IxCryptoAccStatus status)
+{
+ int i;
+ struct ixp_data *ixp;
+ struct ixp_q *q;
+
+ dprintk("%s(%d, %p, %d)\n", __FUNCTION__, ctx_id, bufp, status);
+
+ /*
+ * free any buffer passed in to this routine
+ */
+ if (bufp) {
+ IX_MBUF_MLEN(bufp) = IX_MBUF_PKT_LEN(bufp) = 0;
+ kfree(IX_MBUF_MDATA(bufp));
+ IX_MBUF_MDATA(bufp) = NULL;
+ }
+
+ for (i = 0; i < ixp_sesnum; i++) {
+ ixp = ixp_sessions[i];
+ if (ixp && ixp->ixp_ctx_id == ctx_id)
+ break;
+ }
+ if (i >= ixp_sesnum) {
+ printk("ixp: invalid context id %d\n", ctx_id);
+ return;
+ }
+
+ if (IX_CRYPTO_ACC_STATUS_WAIT == status) {
+ /* this is normal to free the first of two buffers */
+ dprintk("ixp: register not finished yet.\n");
+ return;
+ }
+
+ if (IX_CRYPTO_ACC_STATUS_SUCCESS != status) {
+ printk("ixp: register failed 0x%x\n", status);
+ while (!list_empty(&ixp->ixp_q)) {
+ q = list_entry(ixp->ixp_q.next, struct ixp_q, ixp_q_list);
+ list_del(&q->ixp_q_list);
+ q->ixp_q_crp->crp_etype = EINVAL;
+ crypto_done(q->ixp_q_crp);
+ kmem_cache_free(qcache, q);
+ }
+ return;
+ }
+
+ /*
+ * we are now registered, we cannot start processing the Q here
+ * or we get strange errors with AES (DES/3DES seem to be ok).
+ */
+ ixp->ixp_registered = 1;
+ schedule_work(&ixp->ixp_pending_work);
+}
+
+
+/*
+ * callback for when data processing is complete
+ */
+
+static void
+ixp_perform_cb(
+ UINT32 ctx_id,
+ IX_MBUF *sbufp,
+ IX_MBUF *dbufp,
+ IxCryptoAccStatus status)
+{
+ struct ixp_q *q;
+
+ dprintk("%s(%d, %p, %p, 0x%x)\n", __FUNCTION__, ctx_id, sbufp,
+ dbufp, status);
+
+ if (sbufp == NULL) {
+ printk("ixp: NULL sbuf in ixp_perform_cb\n");
+ return;
+ }
+
+ q = IX_MBUF_PRIV(sbufp);
+ if (q == NULL) {
+ printk("ixp: NULL priv in ixp_perform_cb\n");
+ return;
+ }
+
+ if (status != IX_CRYPTO_ACC_STATUS_SUCCESS) {
+ printk("ixp: perform failed status=%d\n", status);
+ q->ixp_q_crp->crp_etype = EINVAL;
+ }
+
+ crypto_done(q->ixp_q_crp);
+ kmem_cache_free(qcache, q);
+}
+
+
+/*
+ * registration is not callable at IRQ time, so we defer
+ * to a task queue, this routines completes the registration for us
+ * when the task queue runs
+ *
+ * Unfortunately this means we cannot tell OCF that the driver is blocked,
+ * we do that on the next request.
+ */
+
+static void
+ixp_registration(void *arg)
+{
+ struct ixp_data *ixp = arg;
+ struct ixp_q *q = NULL;
+ IX_MBUF *pri = NULL, *sec = NULL;
+ int status = IX_CRYPTO_ACC_STATUS_SUCCESS;
+
+ if (!ixp) {
+ printk("ixp: ixp_registration with no arg\n");
+ return;
+ }
+
+ if (ixp->ixp_ctx_id != -1) {
+ ixCryptoAccCtxUnregister(ixp->ixp_ctx_id);
+ ixp->ixp_ctx_id = -1;
+ }
+
+ if (list_empty(&ixp->ixp_q)) {
+ printk("ixp: ixp_registration with no Q\n");
+ return;
+ }
+
+ /*
+ * setup the primary and secondary buffers
+ */
+ q = list_entry(ixp->ixp_q.next, struct ixp_q, ixp_q_list);
+ if (q->ixp_q_acrd) {
+ pri = &ixp->ixp_pri_mbuf;
+ sec = &ixp->ixp_sec_mbuf;
+ IX_MBUF_MLEN(pri) = IX_MBUF_PKT_LEN(pri) = 128;
+ IX_MBUF_MDATA(pri) = (unsigned char *) kmalloc(128, SLAB_ATOMIC);
+ IX_MBUF_MLEN(sec) = IX_MBUF_PKT_LEN(sec) = 128;
+ IX_MBUF_MDATA(sec) = (unsigned char *) kmalloc(128, SLAB_ATOMIC);
+ }
+
+ /* Only need to register if a crypt op or HMAC op */
+ if (!(ixp->ixp_auth_alg == CRYPTO_SHA1 ||
+ ixp->ixp_auth_alg == CRYPTO_MD5)) {
+ status = ixCryptoAccCtxRegister(
+ &ixp->ixp_ctx,
+ pri, sec,
+ ixp_register_cb,
+ ixp_perform_cb,
+ &ixp->ixp_ctx_id);
+ }
+ else {
+ /* Otherwise we start processing pending q */
+ schedule_work(&ixp->ixp_pending_work);
+ }
+
+ if (IX_CRYPTO_ACC_STATUS_SUCCESS == status)
+ return;
+
+ if (IX_CRYPTO_ACC_STATUS_EXCEED_MAX_TUNNELS == status) {
+ printk("ixp: ixCryptoAccCtxRegister failed (out of tunnels)\n");
+ ixp_blocked = 1;
+ /* perhaps we should return EGAIN on queued ops ? */
+ return;
+ }
+
+ printk("ixp: ixCryptoAccCtxRegister failed %d\n", status);
+ ixp->ixp_ctx_id = -1;
+
+ /*
+ * everything waiting is toasted
+ */
+ while (!list_empty(&ixp->ixp_q)) {
+ q = list_entry(ixp->ixp_q.next, struct ixp_q, ixp_q_list);
+ list_del(&q->ixp_q_list);
+ q->ixp_q_crp->crp_etype = ENOENT;
+ crypto_done(q->ixp_q_crp);
+ kmem_cache_free(qcache, q);
+ }
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+static void
+ixp_registration_wq(struct work_struct *work)
+{
+ struct ixp_data *ixp = container_of(work, struct ixp_data,
+ ixp_registration_work);
+ ixp_registration(ixp);
+}
+#endif
+
+/*
+ * Process a request.
+ */
+static int
+ixp_process(device_t dev, struct cryptop *crp, int hint)
+{
+ struct ixp_data *ixp;
+ unsigned int lid;
+ struct ixp_q *q = NULL;
+ int status;
+
+ dprintk("%s()\n", __FUNCTION__);
+
+ /* Sanity check */
+ if (crp == NULL) {
+ dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__);
+ return EINVAL;
+ }
+
+ crp->crp_etype = 0;
+
+ if (ixp_blocked)
+ return ERESTART;
+
+ if (crp->crp_desc == NULL || crp->crp_buf == NULL) {
+ dprintk("%s,%d: EINVAL\n", __FILE__, __LINE__);
+ crp->crp_etype = EINVAL;
+ goto done;
+ }
+
+ /*
+ * find the session we are using
+ */
+
+ lid = crp->crp_sid & 0xffffffff;
+ if (lid >= ixp_sesnum || lid == 0 || ixp_sessions == NULL ||
+ ixp_sessions[lid] == NULL) {
+ crp->crp_etype = ENOENT;
+ dprintk("%s,%d: ENOENT\n", __FILE__, __LINE__);
+ goto done;
+ }
+ ixp = ixp_sessions[lid];
+
+ /*
+ * setup a new request ready for queuing
+ */
+ q = kmem_cache_alloc(qcache, SLAB_ATOMIC);
+ if (q == NULL) {
+ dprintk("%s,%d: ENOMEM\n", __FILE__, __LINE__);
+ crp->crp_etype = ENOMEM;
+ goto done;
+ }
+ /*
+ * save some cycles by only zeroing the important bits
+ */
+ memset(&q->ixp_q_mbuf, 0, sizeof(q->ixp_q_mbuf));
+ q->ixp_q_ccrd = NULL;
+ q->ixp_q_acrd = NULL;
+ q->ixp_q_crp = crp;
+ q->ixp_q_data = ixp;
+
+ /*
+ * point the cipher and auth descriptors appropriately
+ * check that we have something to do
+ */
+ if (crp->crp_desc->crd_alg == ixp->ixp_cipher_alg)
+ q->ixp_q_ccrd = crp->crp_desc;
+ else if (crp->crp_desc->crd_alg == ixp->ixp_auth_alg)
+ q->ixp_q_acrd = crp->crp_desc;
+ else {
+ crp->crp_etype = ENOENT;
+ dprintk("%s,%d: bad desc match: ENOENT\n", __FILE__, __LINE__);
+ goto done;
+ }
+ if (crp->crp_desc->crd_next) {
+ if (crp->crp_desc->crd_next->crd_alg == ixp->ixp_cipher_alg)
+ q->ixp_q_ccrd = crp->crp_desc->crd_next;
+ else if (crp->crp_desc->crd_next->crd_alg == ixp->ixp_auth_alg)
+ q->ixp_q_acrd = crp->crp_desc->crd_next;
+ else {
+ crp->crp_etype = ENOENT;
+ dprintk("%s,%d: bad desc match: ENOENT\n", __FILE__, __LINE__);
+ goto done;
+ }
+ }
+
+ /*
+ * If there is a direction change for this context then we mark it as
+ * unregistered and re-register is for the new direction. This is not
+ * a very expensive operation and currently only tends to happen when
+ * user-space application are doing benchmarks
+ *
+ * DM - we should be checking for pending requests before unregistering.
+ */
+ if (q->ixp_q_ccrd && ixp->ixp_registered &&
+ ixp->ixp_crd_flags != (q->ixp_q_ccrd->crd_flags & CRD_F_ENCRYPT)) {
+ dprintk("%s - detected direction change on session\n", __FUNCTION__);
+ ixp->ixp_registered = 0;
+ }
+
+ /*
+ * if we are registered, call straight into the perform code
+ */
+ if (ixp->ixp_registered) {
+ ixp_q_process(q);
+ return 0;
+ }
+
+ /*
+ * the only part of the context not set in newsession is the direction
+ * dependent parts
+ */
+ if (q->ixp_q_ccrd) {
+ ixp->ixp_crd_flags = (q->ixp_q_ccrd->crd_flags & CRD_F_ENCRYPT);
+ if (q->ixp_q_ccrd->crd_flags & CRD_F_ENCRYPT) {
+ ixp->ixp_ctx.operation = q->ixp_q_acrd ?
+ IX_CRYPTO_ACC_OP_ENCRYPT_AUTH : IX_CRYPTO_ACC_OP_ENCRYPT;
+ } else {
+ ixp->ixp_ctx.operation = q->ixp_q_acrd ?
+ IX_CRYPTO_ACC_OP_AUTH_DECRYPT : IX_CRYPTO_ACC_OP_DECRYPT;
+ }
+ } else {
+ /* q->ixp_q_acrd must be set if we are here */
+ ixp->ixp_ctx.operation = IX_CRYPTO_ACC_OP_AUTH_CALC;
+ }
+
+ status = list_empty(&ixp->ixp_q);
+ list_add_tail(&q->ixp_q_list, &ixp->ixp_q);
+ if (status)
+ schedule_work(&ixp->ixp_registration_work);
+ return 0;
+
+done:
+ if (q)
+ kmem_cache_free(qcache, q);
+ crypto_done(crp);
+ return 0;
+}
+
+
+#ifdef __ixp46X
+/*
+ * key processing support for the ixp465
+ */
+
+
+/*
+ * copy a BN (LE) into a buffer (BE) an fill out the op appropriately
+ * assume zeroed and only copy bits that are significant
+ */
+
+static int
+ixp_copy_ibuf(struct crparam *p, IxCryptoAccPkeEauOperand *op, UINT32 *buf)
+{
+ unsigned char *src = (unsigned char *) p->crp_p;
+ unsigned char *dst;
+ int len, bits = p->crp_nbits;
+
+ dprintk("%s()\n", __FUNCTION__);
+
+ if (bits > MAX_IOP_SIZE * sizeof(UINT32) * 8) {
+ dprintk("%s - ibuf too big (%d > %d)\n", __FUNCTION__,
+ bits, MAX_IOP_SIZE * sizeof(UINT32) * 8);
+ return -1;
+ }
+
+ len = (bits + 31) / 32; /* the number UINT32's needed */
+
+ dst = (unsigned char *) &buf[len];
+ dst--;
+
+ while (bits > 0) {
+ *dst-- = *src++;
+ bits -= 8;
+ }
+
+#if 0 /* no need to zero remaining bits as it is done during request alloc */
+ while (dst > (unsigned char *) buf)
+ *dst-- = '\0';
+#endif
+
+ op->pData = buf;
+ op->dataLen = len;
+ return 0;
+}
+
+/*
+ * copy out the result, be as forgiving as we can about small output buffers
+ */
+
+static int
+ixp_copy_obuf(struct crparam *p, IxCryptoAccPkeEauOpResult *op, UINT32 *buf)
+{
+ unsigned char *dst = (unsigned char *) p->crp_p;
+ unsigned char *src = (unsigned char *) buf;
+ int len, z, bits = p->crp_nbits;
+
+ dprintk("%s()\n", __FUNCTION__);
+
+ len = op->dataLen * sizeof(UINT32);
+
+ /* skip leading zeroes to be small buffer friendly */
+ z = 0;
+ while (z < len && src[z] == '\0')
+ z++;
+
+ src += len;
+ src--;
+ len -= z;
+
+ while (len > 0 && bits > 0) {
+ *dst++ = *src--;
+ len--;
+ bits -= 8;
+ }
+
+ while (bits > 0) {
+ *dst++ = '\0';
+ bits -= 8;
+ }
+
+ if (len > 0) {
+ dprintk("%s - obuf is %d (z=%d, ob=%d) bytes too small\n",
+ __FUNCTION__, len, z, p->crp_nbits / 8);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+/*
+ * the parameter offsets for exp_mod
+ */
+
+#define IXP_PARAM_BASE 0
+#define IXP_PARAM_EXP 1
+#define IXP_PARAM_MOD 2
+#define IXP_PARAM_RES 3
+
+/*
+ * key processing complete callback, is also used to start processing
+ * by passing a NULL for pResult
+ */
+
+static void
+ixp_kperform_cb(
+ IxCryptoAccPkeEauOperation operation,
+ IxCryptoAccPkeEauOpResult *pResult,
+ BOOL carryOrBorrow,
+ IxCryptoAccStatus status)
+{
+ struct ixp_pkq *q, *tmp;
+ unsigned long flags;
+
+ dprintk("%s(0x%x, %p, %d, 0x%x)\n", __FUNCTION__, operation, pResult,
+ carryOrBorrow, status);
+
+ /* handle a completed request */
+ if (pResult) {
+ if (ixp_pk_cur && &ixp_pk_cur->pkq_result == pResult) {
+ q = ixp_pk_cur;
+ if (status != IX_CRYPTO_ACC_STATUS_SUCCESS) {
+ dprintk("%s() - op failed 0x%x\n", __FUNCTION__, status);
+ q->pkq_krp->krp_status = ERANGE; /* could do better */
+ } else {
+ /* copy out the result */
+ if (ixp_copy_obuf(&q->pkq_krp->krp_param[IXP_PARAM_RES],
+ &q->pkq_result, q->pkq_obuf))
+ q->pkq_krp->krp_status = ERANGE;
+ }
+ crypto_kdone(q->pkq_krp);
+ kfree(q);
+ ixp_pk_cur = NULL;
+ } else
+ printk("%s - callback with invalid result pointer\n", __FUNCTION__);
+ }
+
+ spin_lock_irqsave(&ixp_pkq_lock, flags);
+ if (ixp_pk_cur || list_empty(&ixp_pkq)) {
+ spin_unlock_irqrestore(&ixp_pkq_lock, flags);
+ return;
+ }
+
+ list_for_each_entry_safe(q, tmp, &ixp_pkq, pkq_list) {
+
+ list_del(&q->pkq_list);
+ ixp_pk_cur = q;
+
+ spin_unlock_irqrestore(&ixp_pkq_lock, flags);
+
+ status = ixCryptoAccPkeEauPerform(
+ IX_CRYPTO_ACC_OP_EAU_MOD_EXP,
+ &q->pkq_op,
+ ixp_kperform_cb,
+ &q->pkq_result);
+
+ if (status == IX_CRYPTO_ACC_STATUS_SUCCESS) {
+ dprintk("%s() - ixCryptoAccPkeEauPerform SUCCESS\n", __FUNCTION__);
+ return; /* callback will return here for callback */
+ } else if (status == IX_CRYPTO_ACC_STATUS_RETRY) {
+ printk("%s() - ixCryptoAccPkeEauPerform RETRY\n", __FUNCTION__);
+ } else {
+ printk("%s() - ixCryptoAccPkeEauPerform failed %d\n",
+ __FUNCTION__, status);
+ }
+ q->pkq_krp->krp_status = ERANGE; /* could do better */
+ crypto_kdone(q->pkq_krp);
+ kfree(q);
+ spin_lock_irqsave(&ixp_pkq_lock, flags);
+ }
+ spin_unlock_irqrestore(&ixp_pkq_lock, flags);
+}
+
+
+static int
+ixp_kprocess(device_t dev, struct cryptkop *krp, int hint)
+{
+ struct ixp_pkq *q;
+ int rc = 0;
+ unsigned long flags;
+
+ dprintk("%s l1=%d l2=%d l3=%d l4=%d\n", __FUNCTION__,
+ krp->krp_param[IXP_PARAM_BASE].crp_nbits,
+ krp->krp_param[IXP_PARAM_EXP].crp_nbits,
+ krp->krp_param[IXP_PARAM_MOD].crp_nbits,
+ krp->krp_param[IXP_PARAM_RES].crp_nbits);
+
+
+ if (krp->krp_op != CRK_MOD_EXP) {
+ krp->krp_status = EOPNOTSUPP;
+ goto err;
+ }
+
+ q = (struct ixp_pkq *) kmalloc(sizeof(*q), GFP_KERNEL);
+ if (q == NULL) {
+ krp->krp_status = ENOMEM;
+ goto err;
+ }
+
+ /*
+ * The PKE engine does not appear to zero the output buffer
+ * appropriately, so we need to do it all here.
+ */
+ memset(q, 0, sizeof(*q));
+
+ q->pkq_krp = krp;
+ INIT_LIST_HEAD(&q->pkq_list);
+
+ if (ixp_copy_ibuf(&krp->krp_param[IXP_PARAM_BASE], &q->pkq_op.modExpOpr.M,
+ q->pkq_ibuf0))
+ rc = 1;
+ if (!rc && ixp_copy_ibuf(&krp->krp_param[IXP_PARAM_EXP],
+ &q->pkq_op.modExpOpr.e, q->pkq_ibuf1))
+ rc = 2;
+ if (!rc && ixp_copy_ibuf(&krp->krp_param[IXP_PARAM_MOD],
+ &q->pkq_op.modExpOpr.N, q->pkq_ibuf2))
+ rc = 3;
+
+ if (rc) {
+ kfree(q);
+ krp->krp_status = ERANGE;
+ goto err;
+ }
+
+ q->pkq_result.pData = q->pkq_obuf;
+ q->pkq_result.dataLen =
+ (krp->krp_param[IXP_PARAM_RES].crp_nbits + 31) / 32;
+
+ spin_lock_irqsave(&ixp_pkq_lock, flags);
+ list_add_tail(&q->pkq_list, &ixp_pkq);
+ spin_unlock_irqrestore(&ixp_pkq_lock, flags);
+
+ if (!ixp_pk_cur)
+ ixp_kperform_cb(0, NULL, 0, 0);
+ return (0);
+
+err:
+ crypto_kdone(krp);
+ return (0);
+}
+
+
+
+#ifdef CONFIG_OCF_RANDOMHARVEST
+/*
+ * We run the random number generator output through SHA so that it
+ * is FIPS compliant.
+ */
+
+static volatile int sha_done = 0;
+static unsigned char sha_digest[20];
+
+static void
+ixp_hash_cb(UINT8 *digest, IxCryptoAccStatus status)
+{
+ dprintk("%s(%p, %d)\n", __FUNCTION__, digest, status);
+ if (sha_digest != digest)
+ printk("digest error\n");
+ if (IX_CRYPTO_ACC_STATUS_SUCCESS == status)
+ sha_done = 1;
+ else
+ sha_done = -status;
+}
+
+static int
+ixp_read_random(void *arg, u_int32_t *buf, int maxwords)
+{
+ IxCryptoAccStatus status;
+ int i, n, rc;
+
+ dprintk("%s(%p, %d)\n", __FUNCTION__, buf, maxwords);
+ memset(buf, 0, maxwords * sizeof(*buf));
+ status = ixCryptoAccPkePseudoRandomNumberGet(maxwords, buf);
+ if (status != IX_CRYPTO_ACC_STATUS_SUCCESS) {
+ dprintk("%s: ixCryptoAccPkePseudoRandomNumberGet failed %d\n",
+ __FUNCTION__, status);
+ return 0;
+ }
+
+ /*
+ * run the random data through SHA to make it look more random
+ */
+
+ n = sizeof(sha_digest); /* process digest bytes at a time */
+
+ rc = 0;
+ for (i = 0; i < maxwords; i += n / sizeof(*buf)) {
+ if ((maxwords - i) * sizeof(*buf) < n)
+ n = (maxwords - i) * sizeof(*buf);
+ sha_done = 0;
+ status = ixCryptoAccPkeHashPerform(IX_CRYPTO_ACC_AUTH_SHA1,
+ (UINT8 *) &buf[i], n, ixp_hash_cb, sha_digest);
+ if (status != IX_CRYPTO_ACC_STATUS_SUCCESS) {
+ dprintk("ixCryptoAccPkeHashPerform failed %d\n", status);
+ return -EIO;
+ }
+ while (!sha_done)
+ schedule();
+ if (sha_done < 0) {
+ dprintk("ixCryptoAccPkeHashPerform failed CB %d\n", -sha_done);
+ return 0;
+ }
+ memcpy(&buf[i], sha_digest, n);
+ rc += n / sizeof(*buf);;
+ }
+
+ return rc;
+}
+#endif /* CONFIG_OCF_RANDOMHARVEST */
+
+#endif /* __ixp46X */
+
+
+
+/*
+ * our driver startup and shutdown routines
+ */
+
+static int
+ixp_init(void)
+{
+ dprintk("%s(%p)\n", __FUNCTION__, ixp_init);
+
+ if (ixp_init_crypto && ixCryptoAccInit() != IX_CRYPTO_ACC_STATUS_SUCCESS)
+ printk("ixCryptoAccInit failed, assuming already initialised!\n");
+
+ qcache = kmem_cache_create("ixp4xx_q", sizeof(struct ixp_q), 0,
+ SLAB_HWCACHE_ALIGN, NULL
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
+ , NULL
+#endif
+ );
+ if (!qcache) {
+ printk("failed to create Qcache\n");
+ return -ENOENT;
+ }
+
+ memset(&ixpdev, 0, sizeof(ixpdev));
+ softc_device_init(&ixpdev, "ixp4xx", 0, ixp_methods);
+
+ ixp_id = crypto_get_driverid(softc_get_device(&ixpdev),
+ CRYPTOCAP_F_HARDWARE);
+ if (ixp_id < 0)
+ panic("IXP/OCF crypto device cannot initialize!");
+
+#define REGISTER(alg) \
+ crypto_register(ixp_id,alg,0,0)
+
+ REGISTER(CRYPTO_DES_CBC);
+ REGISTER(CRYPTO_3DES_CBC);
+ REGISTER(CRYPTO_RIJNDAEL128_CBC);
+#ifdef CONFIG_OCF_IXP4XX_SHA1_MD5
+ REGISTER(CRYPTO_MD5);
+ REGISTER(CRYPTO_SHA1);
+#endif
+ REGISTER(CRYPTO_MD5_HMAC);
+ REGISTER(CRYPTO_SHA1_HMAC);
+#undef REGISTER
+
+#ifdef __ixp46X
+ spin_lock_init(&ixp_pkq_lock);
+ /*
+ * we do not enable the go fast options here as they can potentially
+ * allow timing based attacks
+ *
+ * http://www.openssl.org/news/secadv_20030219.txt
+ */
+ ixCryptoAccPkeEauExpConfig(0, 0);
+ crypto_kregister(ixp_id, CRK_MOD_EXP, 0);
+#ifdef CONFIG_OCF_RANDOMHARVEST
+ crypto_rregister(ixp_id, ixp_read_random, NULL);
+#endif
+#endif
+
+ return 0;
+}
+
+static void
+ixp_exit(void)
+{
+ dprintk("%s()\n", __FUNCTION__);
+ crypto_unregister_all(ixp_id);
+ ixp_id = -1;
+ kmem_cache_destroy(qcache);
+ qcache = NULL;
+}
+
+module_init(ixp_init);
+module_exit(ixp_exit);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("David McCullough <dmccullough@cyberguard.com>");
+MODULE_DESCRIPTION("ixp (OCF module for IXP4xx crypto)");
projects / openwrt / svn-archive / archive.git / blobdiff