+++ /dev/null
-
-/*
- * Copyright (c) 2008 Daniel Mueller (daniel@danm.de)
- * Copyright (c) 2007 David McCullough (david_mccullough@securecomputing.com)
- * Copyright (c) 2000 Jason L. Wright (jason@thought.net)
- * Copyright (c) 2000 Theo de Raadt (deraadt@openbsd.org)
- * Copyright (c) 2001 Patrik Lindergren (patrik@ipunplugged.com)
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * Effort sponsored in part by the Defense Advanced Research Projects
- * Agency (DARPA) and Air Force Research Laboratory, Air Force
- * Materiel Command, USAF, under agreement number F30602-01-2-0537.
- *
- */
-#undef UBSEC_DEBUG
-#undef UBSEC_VERBOSE_DEBUG
-
-#ifdef UBSEC_VERBOSE_DEBUG
-#define UBSEC_DEBUG
-#endif
-
-/*
- * uBsec BCM5365 hardware crypto accelerator
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/proc_fs.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/fs.h>
-#include <linux/random.h>
-#include <linux/skbuff.h>
-#include <linux/stat.h>
-#include <asm/io.h>
-
-#include <linux/ssb/ssb.h>
-
-/*
- * BSD queue
- */
-#include "bsdqueue.h"
-
-/*
- * OCF
- */
-#include "cryptodev.h"
-#include "uio.h"
-
-#define HMAC_HACK 1
-
-#ifdef HMAC_HACK
-#include "hmachack.h"
-#include "md5.h"
-#include "md5.c"
-#include "sha1.h"
-#include "sha1.c"
-#endif
-
-#include "ubsecreg.h"
-#include "ubsecvar.h"
-
-#define DRV_MODULE_NAME "ubsec_ssb"
-#define PFX DRV_MODULE_NAME ": "
-#define DRV_MODULE_VERSION "0.02"
-#define DRV_MODULE_RELDATE "Feb 21, 2009"
-
-#if 1
-#define DPRINTF(a...) \
- if (debug) \
- { \
- printk(DRV_MODULE_NAME ": " a); \
- }
-#else
-#define DPRINTF(a...)
-#endif
-
-/*
- * Prototypes
- */
-static irqreturn_t ubsec_ssb_isr(int, void *, struct pt_regs *);
-static int __devinit ubsec_ssb_probe(struct ssb_device *sdev,
- const struct ssb_device_id *ent);
-static void __devexit ubsec_ssb_remove(struct ssb_device *sdev);
-int ubsec_attach(struct ssb_device *sdev, const struct ssb_device_id *ent,
- struct device *self);
-static void ubsec_setup_mackey(struct ubsec_session *ses, int algo,
- caddr_t key, int klen);
-static int dma_map_skb(struct ubsec_softc *sc,
- struct ubsec_dma_alloc* q_map, struct sk_buff *skb, int *mlen);
-static int dma_map_uio(struct ubsec_softc *sc,
- struct ubsec_dma_alloc *q_map, struct uio *uio, int *mlen);
-static void dma_unmap(struct ubsec_softc *sc,
- struct ubsec_dma_alloc *q_map, int mlen);
-static int ubsec_dmamap_aligned(struct ubsec_softc *sc,
- const struct ubsec_dma_alloc *q_map, int mlen);
-
-#ifdef UBSEC_DEBUG
-static int proc_read(char *buf, char **start, off_t offset,
- int size, int *peof, void *data);
-#endif
-
-void ubsec_reset_board(struct ubsec_softc *);
-void ubsec_init_board(struct ubsec_softc *);
-void ubsec_cleanchip(struct ubsec_softc *);
-void ubsec_totalreset(struct ubsec_softc *);
-int ubsec_free_q(struct ubsec_softc*, struct ubsec_q *);
-
-static int ubsec_newsession(device_t, u_int32_t *, struct cryptoini *);
-static int ubsec_freesession(device_t, u_int64_t);
-static int ubsec_process(device_t, struct cryptop *, int);
-
-void ubsec_callback(struct ubsec_softc *, struct ubsec_q *);
-void ubsec_feed(struct ubsec_softc *);
-void ubsec_mcopy(struct sk_buff *, struct sk_buff *, int, int);
-void ubsec_dma_free(struct ubsec_softc *, struct ubsec_dma_alloc *);
-int ubsec_dma_malloc(struct ubsec_softc *, struct ubsec_dma_alloc *,
- size_t, int);
-
-/* DEBUG crap... */
-void ubsec_dump_pb(struct ubsec_pktbuf *);
-void ubsec_dump_mcr(struct ubsec_mcr *);
-
-#define READ_REG(sc,r) \
- ssb_read32((sc)->sdev, (r));
-#define WRITE_REG(sc,r,val) \
- ssb_write32((sc)->sdev, (r), (val));
-#define READ_REG_SDEV(sdev,r) \
- ssb_read32((sdev), (r));
-#define WRITE_REG_SDEV(sdev,r,val) \
- ssb_write32((sdev), (r), (val));
-
-#define SWAP32(x) (x) = htole32(ntohl((x)))
-#define HTOLE32(x) (x) = htole32(x)
-
-#ifdef __LITTLE_ENDIAN
-#define letoh16(x) (x)
-#define letoh32(x) (x)
-#endif
-
-static int debug;
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Enable debug output");
-
-#define UBSEC_SSB_MAX_CHIPS 1
-static struct ubsec_softc *ubsec_chip_idx[UBSEC_SSB_MAX_CHIPS];
-static struct ubsec_stats ubsecstats;
-
-#ifdef UBSEC_DEBUG
-static struct proc_dir_entry *procdebug;
-#endif
-
-static struct ssb_device_id ubsec_ssb_tbl[] = {
- /* Broadcom BCM5365P IPSec Core */
- SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_IPSEC, SSB_ANY_REV),
- SSB_DEVTABLE_END
-};
-
-static struct ssb_driver ubsec_ssb_driver = {
- .name = DRV_MODULE_NAME,
- .id_table = ubsec_ssb_tbl,
- .probe = ubsec_ssb_probe,
- .remove = __devexit_p(ubsec_ssb_remove),
- /*
- .suspend = ubsec_ssb_suspend,
- .resume = ubsec_ssb_resume
- */
-};
-
-static device_method_t ubsec_ssb_methods = {
- /* crypto device methods */
- DEVMETHOD(cryptodev_newsession, ubsec_newsession),
- DEVMETHOD(cryptodev_freesession,ubsec_freesession),
- DEVMETHOD(cryptodev_process, ubsec_process),
-};
-
-#ifdef UBSEC_DEBUG
-static int
-proc_read(char *buf, char **start, off_t offset,
- int size, int *peof, void *data)
-{
- int i = 0, byteswritten = 0, ret;
- unsigned int stat, ctrl;
-#ifdef UBSEC_VERBOSE_DEBUG
- struct ubsec_q *q;
- struct ubsec_dma *dmap;
-#endif
-
- while ((i < UBSEC_SSB_MAX_CHIPS) && (ubsec_chip_idx[i] != NULL))
- {
- struct ubsec_softc *sc = ubsec_chip_idx[i];
-
- stat = READ_REG(sc, BS_STAT);
- ctrl = READ_REG(sc, BS_CTRL);
- ret = snprintf((buf + byteswritten),
- (size - byteswritten) ,
- "DEV %d, DMASTAT %08x, DMACTRL %08x\n", i, stat, ctrl);
-
- byteswritten += ret;
-
-#ifdef UBSEC_VERBOSE_DEBUG
- printf("DEV %d, DMASTAT %08x, DMACTRL %08x\n", i, stat, ctrl);
-
- /* Dump all queues MCRs */
- if (!BSD_SIMPLEQ_EMPTY(&sc->sc_qchip)) {
- BSD_SIMPLEQ_FOREACH(q, &sc->sc_qchip, q_next)
- {
- dmap = q->q_dma;
- ubsec_dump_mcr(&dmap->d_dma->d_mcr);
- }
- }
-#endif
-
- i++;
- }
-
- *peof = 1;
-
- return byteswritten;
-}
-#endif
-
-/*
- * map in a given sk_buff
- */
-static int
-dma_map_skb(struct ubsec_softc *sc, struct ubsec_dma_alloc* q_map, struct sk_buff *skb, int *mlen)
-{
- int i = 0;
- dma_addr_t tmp;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- /*
- * We support only a limited number of fragments.
- */
- if (unlikely((skb_shinfo(skb)->nr_frags + 1) >= UBS_MAX_SCATTER))
- {
- printk(KERN_ERR "Only %d scatter fragments are supported.\n", UBS_MAX_SCATTER);
- return (-ENOMEM);
- }
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("%s - map %d 0x%x %d\n", __FUNCTION__, 0, (unsigned int)skb->data, skb_headlen(skb));
-#endif
-
- /* first data package */
- tmp = dma_map_single(sc->sc_dv,
- skb->data,
- skb_headlen(skb),
- DMA_BIDIRECTIONAL);
-
- q_map[i].dma_paddr = tmp;
- q_map[i].dma_vaddr = skb->data;
- q_map[i].dma_size = skb_headlen(skb);
-
- if (unlikely(tmp == 0))
- {
- printk(KERN_ERR "Could not map memory region for dma.\n");
- return (-EINVAL);
- }
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("%s - map %d done physical addr 0x%x\n", __FUNCTION__, 0, (unsigned int)tmp);
-#endif
-
-
- /* all other data packages */
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("%s - map %d 0x%x %d\n", __FUNCTION__, i + 1,
- (unsigned int)page_address(skb_shinfo(skb)->frags[i].page) +
- skb_shinfo(skb)->frags[i].page_offset, skb_shinfo(skb)->frags[i].size);
-#endif
-
- tmp = dma_map_single(sc->sc_dv,
- page_address(skb_shinfo(skb)->frags[i].page) +
- skb_shinfo(skb)->frags[i].page_offset,
- skb_shinfo(skb)->frags[i].size,
- DMA_BIDIRECTIONAL);
-
- q_map[i + 1].dma_paddr = tmp;
- q_map[i + 1].dma_vaddr = (void*)(page_address(skb_shinfo(skb)->frags[i].page) +
- skb_shinfo(skb)->frags[i].page_offset);
- q_map[i + 1].dma_size = skb_shinfo(skb)->frags[i].size;
-
- if (unlikely(tmp == 0))
- {
- printk(KERN_ERR "Could not map memory region for dma.\n");
- return (-EINVAL);
- }
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("%s - map %d done physical addr 0x%x\n", __FUNCTION__, i + 1, (unsigned int)tmp);
-#endif
-
- }
- *mlen = i + 1;
-
- return(0);
-}
-
-/*
- * map in a given uio buffer
- */
-
-static int
-dma_map_uio(struct ubsec_softc *sc, struct ubsec_dma_alloc *q_map, struct uio *uio, int *mlen)
-{
- struct iovec *iov = uio->uio_iov;
- int n;
- dma_addr_t tmp;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- /*
- * We support only a limited number of fragments.
- */
- if (unlikely(uio->uio_iovcnt >= UBS_MAX_SCATTER))
- {
- printk(KERN_ERR "Only %d scatter fragments are supported.\n", UBS_MAX_SCATTER);
- return (-ENOMEM);
- }
-
- for (n = 0; n < uio->uio_iovcnt; n++) {
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("%s - map %d 0x%x %d\n", __FUNCTION__, n, (unsigned int)iov->iov_base, iov->iov_len);
-#endif
- tmp = dma_map_single(sc->sc_dv,
- iov->iov_base,
- iov->iov_len,
- DMA_BIDIRECTIONAL);
-
- q_map[n].dma_paddr = tmp;
- q_map[n].dma_vaddr = iov->iov_base;
- q_map[n].dma_size = iov->iov_len;
-
- if (unlikely(tmp == 0))
- {
- printk(KERN_ERR "Could not map memory region for dma.\n");
- return (-EINVAL);
- }
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("%s - map %d done physical addr 0x%x\n", __FUNCTION__, n, (unsigned int)tmp);
-#endif
-
- iov++;
- }
- *mlen = n;
-
- return(0);
-}
-
-static void
-dma_unmap(struct ubsec_softc *sc, struct ubsec_dma_alloc *q_map, int mlen)
-{
- int i;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- for(i = 0; i < mlen; i++)
- {
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("%s - unmap %d 0x%x %d\n", __FUNCTION__, i, (unsigned int)q_map[i].dma_paddr, q_map[i].dma_size);
-#endif
- dma_unmap_single(sc->sc_dv,
- q_map[i].dma_paddr,
- q_map[i].dma_size,
- DMA_BIDIRECTIONAL);
- }
- return;
-}
-
-/*
- * Is the operand suitable aligned for direct DMA. Each
- * segment must be aligned on a 32-bit boundary and all
- * but the last segment must be a multiple of 4 bytes.
- */
-static int
-ubsec_dmamap_aligned(struct ubsec_softc *sc, const struct ubsec_dma_alloc *q_map, int mlen)
-{
- int i;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- for (i = 0; i < mlen; i++) {
- if (q_map[i].dma_paddr & 3)
- return (0);
- if (i != (mlen - 1) && (q_map[i].dma_size & 3))
- return (0);
- }
- return (1);
-}
-
-
-#define N(a) (sizeof(a) / sizeof (a[0]))
-static void
-ubsec_setup_mackey(struct ubsec_session *ses, int algo, caddr_t key, int klen)
-{
-#ifdef HMAC_HACK
- MD5_CTX md5ctx;
- SHA1_CTX sha1ctx;
- int i;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- for (i = 0; i < klen; i++)
- key[i] ^= HMAC_IPAD_VAL;
-
- if (algo == CRYPTO_MD5_HMAC) {
- MD5Init(&md5ctx);
- MD5Update(&md5ctx, key, klen);
- MD5Update(&md5ctx, hmac_ipad_buffer, MD5_HMAC_BLOCK_LEN - klen);
- bcopy(md5ctx.md5_st8, ses->ses_hminner, sizeof(md5ctx.md5_st8));
- } else {
- SHA1Init(&sha1ctx);
- SHA1Update(&sha1ctx, key, klen);
- SHA1Update(&sha1ctx, hmac_ipad_buffer,
- SHA1_HMAC_BLOCK_LEN - klen);
- bcopy(sha1ctx.h.b32, ses->ses_hminner, sizeof(sha1ctx.h.b32));
- }
-
- for (i = 0; i < klen; i++)
- key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL);
-
- if (algo == CRYPTO_MD5_HMAC) {
- MD5Init(&md5ctx);
- MD5Update(&md5ctx, key, klen);
- MD5Update(&md5ctx, hmac_opad_buffer, MD5_HMAC_BLOCK_LEN - klen);
- bcopy(md5ctx.md5_st8, ses->ses_hmouter, sizeof(md5ctx.md5_st8));
- } else {
- SHA1Init(&sha1ctx);
- SHA1Update(&sha1ctx, key, klen);
- SHA1Update(&sha1ctx, hmac_opad_buffer,
- SHA1_HMAC_BLOCK_LEN - klen);
- bcopy(sha1ctx.h.b32, ses->ses_hmouter, sizeof(sha1ctx.h.b32));
- }
-
- for (i = 0; i < klen; i++)
- key[i] ^= HMAC_OPAD_VAL;
-
-#else /* HMAC_HACK */
- DPRINTF("md5/sha not implemented\n");
-#endif /* HMAC_HACK */
-}
-#undef N
-
-static int
-__devinit ubsec_ssb_probe(struct ssb_device *sdev,
- const struct ssb_device_id *ent)
-{
- int err;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- err = ssb_bus_powerup(sdev->bus, 0);
- if (err) {
- dev_err(sdev->dev, "Failed to powerup the bus\n");
- goto err_out;
- }
-
- err = request_irq(sdev->irq, (irq_handler_t)ubsec_ssb_isr,
- IRQF_DISABLED | IRQF_SHARED, DRV_MODULE_NAME, sdev);
- if (err) {
- dev_err(sdev->dev, "Could not request irq\n");
- goto err_out_powerdown;
- }
-
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
- err = dma_set_mask(sdev->dma_dev, DMA_BIT_MASK(32)) ||
- dma_set_coherent_mask(sdev->dma_dev, DMA_BIT_MASK(32));
-#else
- err = ssb_dma_set_mask(sdev, DMA_32BIT_MASK);
-#endif
- if (err) {
- dev_err(sdev->dev,
- "Required 32BIT DMA mask unsupported by the system.\n");
- goto err_out_free_irq;
- }
-
- printk(KERN_INFO "Sentry5(tm) ROBOGateway(tm) IPSec Core at IRQ %u\n",
- sdev->irq);
-
- DPRINTF("Vendor: %x, core id: %x, revision: %x\n",
- sdev->id.vendor, sdev->id.coreid, sdev->id.revision);
-
- ssb_device_enable(sdev, 0);
-
- if (ubsec_attach(sdev, ent, sdev->dev) != 0)
- goto err_out_disable;
-
-#ifdef UBSEC_DEBUG
- procdebug = create_proc_entry(DRV_MODULE_NAME, S_IRUSR, NULL);
- if (procdebug)
- {
- procdebug->read_proc = proc_read;
- procdebug->data = NULL;
- } else
- DPRINTF("Unable to create proc file.\n");
-#endif
-
- return 0;
-
-err_out_disable:
- ssb_device_disable(sdev, 0);
-
-err_out_free_irq:
- free_irq(sdev->irq, sdev);
-
-err_out_powerdown:
- ssb_bus_may_powerdown(sdev->bus);
-
-err_out:
- return err;
-}
-
-static void __devexit ubsec_ssb_remove(struct ssb_device *sdev) {
-
- struct ubsec_softc *sc;
- unsigned int ctrlflgs;
- struct ubsec_dma *dmap;
- u_int32_t i;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- ctrlflgs = READ_REG_SDEV(sdev, BS_CTRL);
- /* disable all IPSec Core interrupts globally */
- ctrlflgs ^= (BS_CTRL_MCR1INT | BS_CTRL_MCR2INT |
- BS_CTRL_DMAERR);
- WRITE_REG_SDEV(sdev, BS_CTRL, ctrlflgs);
-
- free_irq(sdev->irq, sdev);
-
- sc = (struct ubsec_softc *)ssb_get_drvdata(sdev);
-
- /* unregister all crypto algorithms */
- crypto_unregister_all(sc->sc_cid);
-
- /* Free queue / dma memory */
- for (i = 0; i < UBS_MAX_NQUEUE; i++) {
- struct ubsec_q *q;
-
- q = sc->sc_queuea[i];
- if (q != NULL)
- {
- dmap = q->q_dma;
- if (dmap != NULL)
- {
- ubsec_dma_free(sc, &dmap->d_alloc);
- q->q_dma = NULL;
- }
- kfree(q);
- }
- sc->sc_queuea[i] = NULL;
- }
-
- ssb_device_disable(sdev, 0);
- ssb_bus_may_powerdown(sdev->bus);
- ssb_set_drvdata(sdev, NULL);
-
-#ifdef UBSEC_DEBUG
- if (procdebug)
- remove_proc_entry(DRV_MODULE_NAME, NULL);
-#endif
-
-}
-
-
-int
-ubsec_attach(struct ssb_device *sdev, const struct ssb_device_id *ent,
- struct device *self)
-{
- struct ubsec_softc *sc = NULL;
- struct ubsec_dma *dmap;
- u_int32_t i;
- static int num_chips = 0;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- sc = (struct ubsec_softc *) kmalloc(sizeof(*sc), GFP_KERNEL);
- if (!sc)
- return(-ENOMEM);
- memset(sc, 0, sizeof(*sc));
-
- sc->sc_dv = sdev->dev;
- sc->sdev = sdev;
-
- spin_lock_init(&sc->sc_ringmtx);
-
- softc_device_init(sc, "ubsec_ssb", num_chips, ubsec_ssb_methods);
-
- /* Maybe someday there are boards with more than one chip available */
- if (num_chips < UBSEC_SSB_MAX_CHIPS) {
- ubsec_chip_idx[device_get_unit(sc->sc_dev)] = sc;
- num_chips++;
- }
-
- ssb_set_drvdata(sdev, sc);
-
- BSD_SIMPLEQ_INIT(&sc->sc_queue);
- BSD_SIMPLEQ_INIT(&sc->sc_qchip);
- BSD_SIMPLEQ_INIT(&sc->sc_queue2);
- BSD_SIMPLEQ_INIT(&sc->sc_qchip2);
- BSD_SIMPLEQ_INIT(&sc->sc_q2free);
-
- sc->sc_statmask = BS_STAT_MCR1_DONE | BS_STAT_DMAERR;
-
- sc->sc_cid = crypto_get_driverid(softc_get_device(sc), CRYPTOCAP_F_HARDWARE);
- if (sc->sc_cid < 0) {
- device_printf(sc->sc_dev, "could not get crypto driver id\n");
- return -1;
- }
-
- BSD_SIMPLEQ_INIT(&sc->sc_freequeue);
- dmap = sc->sc_dmaa;
- for (i = 0; i < UBS_MAX_NQUEUE; i++, dmap++) {
- struct ubsec_q *q;
-
- q = (struct ubsec_q *)kmalloc(sizeof(struct ubsec_q), GFP_KERNEL);
- if (q == NULL) {
- printf(": can't allocate queue buffers\n");
- break;
- }
-
- if (ubsec_dma_malloc(sc, &dmap->d_alloc, sizeof(struct ubsec_dmachunk),0)) {
- printf(": can't allocate dma buffers\n");
- kfree(q);
- break;
- }
- dmap->d_dma = (struct ubsec_dmachunk *)dmap->d_alloc.dma_vaddr;
-
- q->q_dma = dmap;
- sc->sc_queuea[i] = q;
-
- BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
- }
-
- /*
- * Reset Broadcom chip
- */
- ubsec_reset_board(sc);
-
- /*
- * Init Broadcom chip
- */
- ubsec_init_board(sc);
-
- /* supported crypto algorithms */
- crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0);
- crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0);
-
- if (sc->sc_flags & UBS_FLAGS_AES) {
- crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0);
- printf(KERN_INFO DRV_MODULE_NAME ": DES 3DES AES128 AES192 AES256 MD5_HMAC SHA1_HMAC\n");
- }
- else
- printf(KERN_INFO DRV_MODULE_NAME ": DES 3DES MD5_HMAC SHA1_HMAC\n");
-
- crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0);
- crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0);
-
- return 0;
-}
-
-/*
- * UBSEC Interrupt routine
- */
-static irqreturn_t
-ubsec_ssb_isr(int irq, void *arg, struct pt_regs *regs)
-{
- struct ubsec_softc *sc = NULL;
- volatile u_int32_t stat;
- struct ubsec_q *q;
- struct ubsec_dma *dmap;
- int npkts = 0, i;
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- sc = (struct ubsec_softc *)ssb_get_drvdata(arg);
-
- stat = READ_REG(sc, BS_STAT);
-
- stat &= sc->sc_statmask;
- if (stat == 0)
- return IRQ_NONE;
-
- WRITE_REG(sc, BS_STAT, stat); /* IACK */
-
- /*
- * Check to see if we have any packets waiting for us
- */
- if ((stat & BS_STAT_MCR1_DONE)) {
- while (!BSD_SIMPLEQ_EMPTY(&sc->sc_qchip)) {
- q = BSD_SIMPLEQ_FIRST(&sc->sc_qchip);
- dmap = q->q_dma;
-
- if ((dmap->d_dma->d_mcr.mcr_flags & htole16(UBS_MCR_DONE)) == 0)
- {
- DPRINTF("error while processing MCR. Flags = %x\n", dmap->d_dma->d_mcr.mcr_flags);
- break;
- }
-
- BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q_next);
-
- npkts = q->q_nstacked_mcrs;
- /*
- * search for further sc_qchip ubsec_q's that share
- * the same MCR, and complete them too, they must be
- * at the top.
- */
- for (i = 0; i < npkts; i++) {
- if(q->q_stacked_mcr[i])
- ubsec_callback(sc, q->q_stacked_mcr[i]);
- else
- break;
- }
- ubsec_callback(sc, q);
- }
-
- /*
- * Don't send any more packet to chip if there has been
- * a DMAERR.
- */
- if (likely(!(stat & BS_STAT_DMAERR)))
- ubsec_feed(sc);
- else
- DPRINTF("DMA error occurred. Stop feeding crypto chip.\n");
- }
-
- /*
- * Check to see if we got any DMA Error
- */
- if (stat & BS_STAT_DMAERR) {
- volatile u_int32_t a = READ_REG(sc, BS_ERR);
-
- printf(KERN_ERR "%s: dmaerr %s@%08x\n", DRV_MODULE_NAME,
- (a & BS_ERR_READ) ? "read" : "write", a & BS_ERR_ADDR);
-
- ubsecstats.hst_dmaerr++;
- ubsec_totalreset(sc);
- ubsec_feed(sc);
- }
-
- return IRQ_HANDLED;
-}
-
-/*
- * ubsec_feed() - aggregate and post requests to chip
- * It is assumed that the caller set splnet()
- */
-void
-ubsec_feed(struct ubsec_softc *sc)
-{
-#ifdef UBSEC_VERBOSE_DEBUG
- static int max;
-#endif
- struct ubsec_q *q, *q2;
- int npkts, i;
- void *v;
- u_int32_t stat;
-
- npkts = sc->sc_nqueue;
- if (npkts > UBS_MAX_AGGR)
- npkts = UBS_MAX_AGGR;
- if (npkts < 2)
- goto feed1;
-
- stat = READ_REG(sc, BS_STAT);
-
- if (stat & (BS_STAT_MCR1_FULL | BS_STAT_DMAERR)) {
- if(stat & BS_STAT_DMAERR) {
- ubsec_totalreset(sc);
- ubsecstats.hst_dmaerr++;
- }
- return;
- }
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("merging %d records\n", npkts);
-
- /* XXX temporary aggregation statistics reporting code */
- if (max < npkts) {
- max = npkts;
- DPRINTF("%s: new max aggregate %d\n", DRV_MODULE_NAME, max);
- }
-#endif /* UBSEC_VERBOSE_DEBUG */
-
- q = BSD_SIMPLEQ_FIRST(&sc->sc_queue);
- BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
- --sc->sc_nqueue;
-
-#if 0
- /*
- * XXX
- * We use dma_map_single() - no sync required!
- */
-
- bus_dmamap_sync(sc->sc_dmat, q->q_src_map,
- 0, q->q_src_map->dm_mapsize, BUS_DMASYNC_PREWRITE);
- if (q->q_dst_map != NULL)
- bus_dmamap_sync(sc->sc_dmat, q->q_dst_map,
- 0, q->q_dst_map->dm_mapsize, BUS_DMASYNC_PREREAD);
-#endif
-
- q->q_nstacked_mcrs = npkts - 1; /* Number of packets stacked */
-
- for (i = 0; i < q->q_nstacked_mcrs; i++) {
- q2 = BSD_SIMPLEQ_FIRST(&sc->sc_queue);
-
-#if 0
- bus_dmamap_sync(sc->sc_dmat, q2->q_src_map,
- 0, q2->q_src_map->dm_mapsize, BUS_DMASYNC_PREWRITE);
- if (q2->q_dst_map != NULL)
- bus_dmamap_sync(sc->sc_dmat, q2->q_dst_map,
- 0, q2->q_dst_map->dm_mapsize, BUS_DMASYNC_PREREAD);
-#endif
- BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
- --sc->sc_nqueue;
-
- v = ((char *)&q2->q_dma->d_dma->d_mcr) + sizeof(struct ubsec_mcr) -
- sizeof(struct ubsec_mcr_add);
- bcopy(v, &q->q_dma->d_dma->d_mcradd[i], sizeof(struct ubsec_mcr_add));
- q->q_stacked_mcr[i] = q2;
- }
- q->q_dma->d_dma->d_mcr.mcr_pkts = htole16(npkts);
- BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next);
-#if 0
- bus_dmamap_sync(sc->sc_dmat, q->q_dma->d_alloc.dma_map,
- 0, q->q_dma->d_alloc.dma_map->dm_mapsize,
- BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
-#endif
- WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr +
- offsetof(struct ubsec_dmachunk, d_mcr));
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("feed (1): q->chip %p %08x %08x\n", q,
- (u_int32_t)q->q_dma->d_alloc.dma_paddr,
- (u_int32_t)(q->q_dma->d_alloc.dma_paddr +
- offsetof(struct ubsec_dmachunk, d_mcr)));
-#endif /* UBSEC_DEBUG */
- return;
-
-feed1:
- while (!BSD_SIMPLEQ_EMPTY(&sc->sc_queue)) {
- stat = READ_REG(sc, BS_STAT);
-
- if (stat & (BS_STAT_MCR1_FULL | BS_STAT_DMAERR)) {
- if(stat & BS_STAT_DMAERR) {
- ubsec_totalreset(sc);
- ubsecstats.hst_dmaerr++;
- }
- break;
- }
-
- q = BSD_SIMPLEQ_FIRST(&sc->sc_queue);
-
-#if 0
- bus_dmamap_sync(sc->sc_dmat, q->q_src_map,
- 0, q->q_src_map->dm_mapsize, BUS_DMASYNC_PREWRITE);
- if (q->q_dst_map != NULL)
- bus_dmamap_sync(sc->sc_dmat, q->q_dst_map,
- 0, q->q_dst_map->dm_mapsize, BUS_DMASYNC_PREREAD);
- bus_dmamap_sync(sc->sc_dmat, q->q_dma->d_alloc.dma_map,
- 0, q->q_dma->d_alloc.dma_map->dm_mapsize,
- BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
-#endif
-
- WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr +
- offsetof(struct ubsec_dmachunk, d_mcr));
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("feed (2): q->chip %p %08x %08x\n", q,
- (u_int32_t)q->q_dma->d_alloc.dma_paddr,
- (u_int32_t)(q->q_dma->d_alloc.dma_paddr +
- offsetof(struct ubsec_dmachunk, d_mcr)));
-#endif /* UBSEC_DEBUG */
- BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
- --sc->sc_nqueue;
- BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next);
- }
-}
-
-/*
- * Allocate a new 'session' and return an encoded session id. 'sidp'
- * contains our registration id, and should contain an encoded session
- * id on successful allocation.
- */
-static int
-ubsec_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri)
-{
- struct cryptoini *c, *encini = NULL, *macini = NULL;
- struct ubsec_softc *sc = NULL;
- struct ubsec_session *ses = NULL;
- int sesn, i;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- if (sidp == NULL || cri == NULL)
- return (EINVAL);
-
- sc = device_get_softc(dev);
-
- if (sc == NULL)
- return (EINVAL);
-
- for (c = cri; c != NULL; c = c->cri_next) {
- if (c->cri_alg == CRYPTO_MD5_HMAC ||
- c->cri_alg == CRYPTO_SHA1_HMAC) {
- if (macini)
- return (EINVAL);
- macini = c;
- } else if (c->cri_alg == CRYPTO_DES_CBC ||
- c->cri_alg == CRYPTO_3DES_CBC ||
- c->cri_alg == CRYPTO_AES_CBC) {
- if (encini)
- return (EINVAL);
- encini = c;
- } else
- return (EINVAL);
- }
- if (encini == NULL && macini == NULL)
- return (EINVAL);
-
- if (sc->sc_sessions == NULL) {
- ses = sc->sc_sessions = (struct ubsec_session *)kmalloc(
- sizeof(struct ubsec_session), SLAB_ATOMIC);
- if (ses == NULL)
- return (ENOMEM);
- memset(ses, 0, sizeof(struct ubsec_session));
- sesn = 0;
- sc->sc_nsessions = 1;
- } else {
- for (sesn = 0; sesn < sc->sc_nsessions; sesn++) {
- if (sc->sc_sessions[sesn].ses_used == 0) {
- ses = &sc->sc_sessions[sesn];
- break;
- }
- }
-
- if (ses == NULL) {
- sesn = sc->sc_nsessions;
- ses = (struct ubsec_session *)kmalloc((sesn + 1) *
- sizeof(struct ubsec_session), SLAB_ATOMIC);
- if (ses == NULL)
- return (ENOMEM);
- memset(ses, 0, (sesn + 1) * sizeof(struct ubsec_session));
- bcopy(sc->sc_sessions, ses, sesn *
- sizeof(struct ubsec_session));
- bzero(sc->sc_sessions, sesn *
- sizeof(struct ubsec_session));
- kfree(sc->sc_sessions);
- sc->sc_sessions = ses;
- ses = &sc->sc_sessions[sesn];
- sc->sc_nsessions++;
- }
- }
-
- bzero(ses, sizeof(struct ubsec_session));
- ses->ses_used = 1;
- if (encini) {
- /* get an IV */
- /* XXX may read fewer than requested */
- read_random(ses->ses_iv, sizeof(ses->ses_iv));
-
- /* Go ahead and compute key in ubsec's byte order */
- if (encini->cri_alg == CRYPTO_DES_CBC) {
- /* DES uses the same key three times:
- * 1st encrypt -> 2nd decrypt -> 3nd encrypt */
- bcopy(encini->cri_key, &ses->ses_key[0], 8);
- bcopy(encini->cri_key, &ses->ses_key[2], 8);
- bcopy(encini->cri_key, &ses->ses_key[4], 8);
- ses->ses_keysize = 192; /* Fake! Actually its only 64bits ..
- oh no it is even less: 54bits. */
- } else if(encini->cri_alg == CRYPTO_3DES_CBC) {
- bcopy(encini->cri_key, ses->ses_key, 24);
- ses->ses_keysize = 192;
- } else if(encini->cri_alg == CRYPTO_AES_CBC) {
- ses->ses_keysize = encini->cri_klen;
-
- if (ses->ses_keysize != 128 &&
- ses->ses_keysize != 192 &&
- ses->ses_keysize != 256)
- {
- DPRINTF("unsupported AES key size: %d\n", ses->ses_keysize);
- return (EINVAL);
- }
- bcopy(encini->cri_key, ses->ses_key, (ses->ses_keysize / 8));
- }
-
- /* Hardware requires the keys in little endian byte order */
- for (i=0; i < (ses->ses_keysize / 32); i++)
- SWAP32(ses->ses_key[i]);
- }
-
- if (macini) {
- ses->ses_mlen = macini->cri_mlen;
-
- if (ses->ses_mlen == 0 ||
- ses->ses_mlen > SHA1_HASH_LEN) {
-
- if (macini->cri_alg == CRYPTO_MD5_HMAC ||
- macini->cri_alg == CRYPTO_SHA1_HMAC)
- {
- ses->ses_mlen = DEFAULT_HMAC_LEN;
- } else
- {
- /*
- * Reserved for future usage. MD5/SHA1 calculations have
- * different hash sizes.
- */
- printk(KERN_ERR DRV_MODULE_NAME ": unsupported hash operation with mac/hash len: %d\n", ses->ses_mlen);
- return (EINVAL);
- }
-
- }
-
- if (macini->cri_key != NULL) {
- ubsec_setup_mackey(ses, macini->cri_alg, macini->cri_key,
- macini->cri_klen / 8);
- }
- }
-
- *sidp = UBSEC_SID(device_get_unit(sc->sc_dev), sesn);
- return (0);
-}
-
-/*
- * Deallocate a session.
- */
-static int
-ubsec_freesession(device_t dev, u_int64_t tid)
-{
- struct ubsec_softc *sc = device_get_softc(dev);
- int session;
- u_int32_t sid = ((u_int32_t)tid) & 0xffffffff;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- if (sc == NULL)
- return (EINVAL);
-
- session = UBSEC_SESSION(sid);
- if (session < sc->sc_nsessions) {
- bzero(&sc->sc_sessions[session], sizeof(sc->sc_sessions[session]));
- return (0);
- } else
- return (EINVAL);
-}
-
-static int
-ubsec_process(device_t dev, struct cryptop *crp, int hint)
-{
- struct ubsec_q *q = NULL;
- int err = 0, i, j, nicealign;
- struct ubsec_softc *sc = device_get_softc(dev);
- struct cryptodesc *crd1, *crd2, *maccrd, *enccrd;
- int encoffset = 0, macoffset = 0, cpskip, cpoffset;
- int sskip, dskip, stheend, dtheend, ivsize = 8;
- int16_t coffset;
- struct ubsec_session *ses;
- struct ubsec_generic_ctx ctx;
- struct ubsec_dma *dmap = NULL;
- unsigned long flags;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- if (unlikely(crp == NULL || crp->crp_callback == NULL)) {
- ubsecstats.hst_invalid++;
- return (EINVAL);
- }
-
- if (unlikely(sc == NULL))
- return (EINVAL);
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("spin_lock_irqsave\n");
-#endif
- spin_lock_irqsave(&sc->sc_ringmtx, flags);
- //spin_lock_irq(&sc->sc_ringmtx);
-
- if (BSD_SIMPLEQ_EMPTY(&sc->sc_freequeue)) {
- ubsecstats.hst_queuefull++;
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("spin_unlock_irqrestore\n");
-#endif
- spin_unlock_irqrestore(&sc->sc_ringmtx, flags);
- //spin_unlock_irq(&sc->sc_ringmtx);
- err = ENOMEM;
- goto errout2;
- }
-
- q = BSD_SIMPLEQ_FIRST(&sc->sc_freequeue);
- BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_freequeue, q_next);
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("spin_unlock_irqrestore\n");
-#endif
- spin_unlock_irqrestore(&sc->sc_ringmtx, flags);
- //spin_unlock_irq(&sc->sc_ringmtx);
-
- dmap = q->q_dma; /* Save dma pointer */
- bzero(q, sizeof(struct ubsec_q));
- bzero(&ctx, sizeof(ctx));
-
- q->q_sesn = UBSEC_SESSION(crp->crp_sid);
- q->q_dma = dmap;
- ses = &sc->sc_sessions[q->q_sesn];
-
- if (crp->crp_flags & CRYPTO_F_SKBUF) {
- q->q_src_m = (struct sk_buff *)crp->crp_buf;
- q->q_dst_m = (struct sk_buff *)crp->crp_buf;
- } else if (crp->crp_flags & CRYPTO_F_IOV) {
- q->q_src_io = (struct uio *)crp->crp_buf;
- q->q_dst_io = (struct uio *)crp->crp_buf;
- } else {
- err = EINVAL;
- goto errout; /* XXX we don't handle contiguous blocks! */
- }
-
- bzero(&dmap->d_dma->d_mcr, sizeof(struct ubsec_mcr));
-
- dmap->d_dma->d_mcr.mcr_pkts = htole16(1);
- dmap->d_dma->d_mcr.mcr_flags = 0;
- q->q_crp = crp;
-
- crd1 = crp->crp_desc;
- if (crd1 == NULL) {
- err = EINVAL;
- goto errout;
- }
- crd2 = crd1->crd_next;
-
- if (crd2 == NULL) {
- if (crd1->crd_alg == CRYPTO_MD5_HMAC ||
- crd1->crd_alg == CRYPTO_SHA1_HMAC) {
- maccrd = crd1;
- enccrd = NULL;
- } else if (crd1->crd_alg == CRYPTO_DES_CBC ||
- crd1->crd_alg == CRYPTO_3DES_CBC ||
- crd1->crd_alg == CRYPTO_AES_CBC) {
- maccrd = NULL;
- enccrd = crd1;
- } else {
- err = EINVAL;
- goto errout;
- }
- } else {
- if ((crd1->crd_alg == CRYPTO_MD5_HMAC ||
- crd1->crd_alg == CRYPTO_SHA1_HMAC) &&
- (crd2->crd_alg == CRYPTO_DES_CBC ||
- crd2->crd_alg == CRYPTO_3DES_CBC ||
- crd2->crd_alg == CRYPTO_AES_CBC) &&
- ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) {
- maccrd = crd1;
- enccrd = crd2;
- } else if ((crd1->crd_alg == CRYPTO_DES_CBC ||
- crd1->crd_alg == CRYPTO_3DES_CBC ||
- crd1->crd_alg == CRYPTO_AES_CBC) &&
- (crd2->crd_alg == CRYPTO_MD5_HMAC ||
- crd2->crd_alg == CRYPTO_SHA1_HMAC) &&
- (crd1->crd_flags & CRD_F_ENCRYPT)) {
- enccrd = crd1;
- maccrd = crd2;
- } else {
- /*
- * We cannot order the ubsec as requested
- */
- printk(KERN_ERR DRV_MODULE_NAME ": got wrong algorithm/signature order.\n");
- err = EINVAL;
- goto errout;
- }
- }
-
- /* Encryption/Decryption requested */
- if (enccrd) {
- encoffset = enccrd->crd_skip;
-
- if (enccrd->crd_alg == CRYPTO_DES_CBC ||
- enccrd->crd_alg == CRYPTO_3DES_CBC)
- {
- ctx.pc_flags |= htole16(UBS_PKTCTX_ENC_3DES);
- ctx.pc_type = htole16(UBS_PKTCTX_TYPE_IPSEC_DES);
- ivsize = 8; /* [3]DES uses 64bit IVs */
- } else {
- ctx.pc_flags |= htole16(UBS_PKTCTX_ENC_AES);
- ctx.pc_type = htole16(UBS_PKTCTX_TYPE_IPSEC_AES);
- ivsize = 16; /* AES uses 128bit IVs / [3]DES 64bit IVs */
-
- switch(ses->ses_keysize)
- {
- case 128:
- ctx.pc_flags |= htole16(UBS_PKTCTX_AES128);
- break;
- case 192:
- ctx.pc_flags |= htole16(UBS_PKTCTX_AES192);
- break;
- case 256:
- ctx.pc_flags |= htole16(UBS_PKTCTX_AES256);
- break;
- default:
- DPRINTF("invalid AES key size: %d\n", ses->ses_keysize);
- err = EINVAL;
- goto errout;
- }
- }
-
- if (enccrd->crd_flags & CRD_F_ENCRYPT) {
- /* Direction: Outbound */
-
- q->q_flags |= UBSEC_QFLAGS_COPYOUTIV;
-
- if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) {
- bcopy(enccrd->crd_iv, ctx.pc_iv, ivsize);
- } else {
- for(i=0; i < (ivsize / 4); i++)
- ctx.pc_iv[i] = ses->ses_iv[i];
- }
-
- /* If there is no IV in the buffer -> copy it here */
- if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) {
- if (crp->crp_flags & CRYPTO_F_SKBUF)
- /*
- m_copyback(q->q_src_m,
- enccrd->crd_inject,
- 8, ctx.pc_iv);
- */
- crypto_copyback(crp->crp_flags, (caddr_t)q->q_src_m,
- enccrd->crd_inject, ivsize, (caddr_t)ctx.pc_iv);
- else if (crp->crp_flags & CRYPTO_F_IOV)
- /*
- cuio_copyback(q->q_src_io,
- enccrd->crd_inject,
- 8, ctx.pc_iv);
- */
- crypto_copyback(crp->crp_flags, (caddr_t)q->q_src_io,
- enccrd->crd_inject, ivsize, (caddr_t)ctx.pc_iv);
- }
- } else {
- /* Direction: Inbound */
-
- ctx.pc_flags |= htole16(UBS_PKTCTX_INBOUND);
-
- if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
- bcopy(enccrd->crd_iv, ctx.pc_iv, ivsize);
- else if (crp->crp_flags & CRYPTO_F_SKBUF)
- /*
- m_copydata(q->q_src_m, enccrd->crd_inject,
- 8, (caddr_t)ctx.pc_iv);
- */
- crypto_copydata(crp->crp_flags, (caddr_t)q->q_src_m,
- enccrd->crd_inject, ivsize,
- (caddr_t)ctx.pc_iv);
- else if (crp->crp_flags & CRYPTO_F_IOV)
- /*
- cuio_copydata(q->q_src_io,
- enccrd->crd_inject, 8,
- (caddr_t)ctx.pc_iv);
- */
- crypto_copydata(crp->crp_flags, (caddr_t)q->q_src_io,
- enccrd->crd_inject, ivsize,
- (caddr_t)ctx.pc_iv);
-
- }
-
- /* Even though key & IV sizes differ from cipher to cipher
- * copy / swap the full array lengths. Let the compiler unroll
- * the loop to increase the cpu pipeline performance... */
- for(i=0; i < 8; i++)
- ctx.pc_key[i] = ses->ses_key[i];
- for(i=0; i < 4; i++)
- SWAP32(ctx.pc_iv[i]);
- }
-
- /* Authentication requested */
- if (maccrd) {
- macoffset = maccrd->crd_skip;
-
- if (maccrd->crd_alg == CRYPTO_MD5_HMAC)
- ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_MD5);
- else
- ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_SHA1);
-
- for (i = 0; i < 5; i++) {
- ctx.pc_hminner[i] = ses->ses_hminner[i];
- ctx.pc_hmouter[i] = ses->ses_hmouter[i];
-
- HTOLE32(ctx.pc_hminner[i]);
- HTOLE32(ctx.pc_hmouter[i]);
- }
- }
-
- if (enccrd && maccrd) {
- /*
- * ubsec cannot handle packets where the end of encryption
- * and authentication are not the same, or where the
- * encrypted part begins before the authenticated part.
- */
- if (((encoffset + enccrd->crd_len) !=
- (macoffset + maccrd->crd_len)) ||
- (enccrd->crd_skip < maccrd->crd_skip)) {
- err = EINVAL;
- goto errout;
- }
- sskip = maccrd->crd_skip;
- cpskip = dskip = enccrd->crd_skip;
- stheend = maccrd->crd_len;
- dtheend = enccrd->crd_len;
- coffset = enccrd->crd_skip - maccrd->crd_skip;
- cpoffset = cpskip + dtheend;
-#ifdef UBSEC_DEBUG
- DPRINTF("mac: skip %d, len %d, inject %d\n",
- maccrd->crd_skip, maccrd->crd_len, maccrd->crd_inject);
- DPRINTF("enc: skip %d, len %d, inject %d\n",
- enccrd->crd_skip, enccrd->crd_len, enccrd->crd_inject);
- DPRINTF("src: skip %d, len %d\n", sskip, stheend);
- DPRINTF("dst: skip %d, len %d\n", dskip, dtheend);
- DPRINTF("ubs: coffset %d, pktlen %d, cpskip %d, cpoffset %d\n",
- coffset, stheend, cpskip, cpoffset);
-#endif
- } else {
- cpskip = dskip = sskip = macoffset + encoffset;
- dtheend = stheend = (enccrd)?enccrd->crd_len:maccrd->crd_len;
- cpoffset = cpskip + dtheend;
- coffset = 0;
- }
- ctx.pc_offset = htole16(coffset >> 2);
-
-#if 0
- if (bus_dmamap_create(sc->sc_dmat, 0xfff0, UBS_MAX_SCATTER,
- 0xfff0, 0, BUS_DMA_NOWAIT, &q->q_src_map) != 0) {
- err = ENOMEM;
- goto errout;
- }
-#endif
-
- if (crp->crp_flags & CRYPTO_F_SKBUF) {
-#if 0
- if (bus_dmamap_load_mbuf(sc->sc_dmat, q->q_src_map,
- q->q_src_m, BUS_DMA_NOWAIT) != 0) {
- bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
- q->q_src_map = NULL;
- err = ENOMEM;
- goto errout;
- }
-#endif
- err = dma_map_skb(sc, q->q_src_map, q->q_src_m, &q->q_src_len);
- if (unlikely(err != 0))
- goto errout;
-
- } else if (crp->crp_flags & CRYPTO_F_IOV) {
-#if 0
- if (bus_dmamap_load_uio(sc->sc_dmat, q->q_src_map,
- q->q_src_io, BUS_DMA_NOWAIT) != 0) {
- bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
- q->q_src_map = NULL;
- err = ENOMEM;
- goto errout;
- }
-#endif
- err = dma_map_uio(sc, q->q_src_map, q->q_src_io, &q->q_src_len);
- if (unlikely(err != 0))
- goto errout;
- }
-
- /*
- * Check alignment
- */
- nicealign = ubsec_dmamap_aligned(sc, q->q_src_map, q->q_src_len);
-
- dmap->d_dma->d_mcr.mcr_pktlen = htole16(stheend);
-
-#ifdef UBSEC_DEBUG
- DPRINTF("src skip: %d\n", sskip);
-#endif
- for (i = j = 0; i < q->q_src_len; i++) {
- struct ubsec_pktbuf *pb;
- size_t packl = q->q_src_map[i].dma_size;
- dma_addr_t packp = q->q_src_map[i].dma_paddr;
-
- if (sskip >= packl) {
- sskip -= packl;
- continue;
- }
-
- packl -= sskip;
- packp += sskip;
- sskip = 0;
-
- /* maximum fragment size is 0xfffc */
- if (packl > 0xfffc) {
- DPRINTF("Error: fragment size is bigger than 0xfffc.\n");
- err = EIO;
- goto errout;
- }
-
- if (j == 0)
- pb = &dmap->d_dma->d_mcr.mcr_ipktbuf;
- else
- pb = &dmap->d_dma->d_sbuf[j - 1];
-
- pb->pb_addr = htole32(packp);
-
- if (stheend) {
- if (packl > stheend) {
- pb->pb_len = htole32(stheend);
- stheend = 0;
- } else {
- pb->pb_len = htole32(packl);
- stheend -= packl;
- }
- } else
- pb->pb_len = htole32(packl);
-
- if ((i + 1) == q->q_src_len)
- pb->pb_next = 0;
- else
- pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
- offsetof(struct ubsec_dmachunk, d_sbuf[j]));
- j++;
- }
-
- if (enccrd == NULL && maccrd != NULL) {
- /* Authentication only */
- dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr = 0;
- dmap->d_dma->d_mcr.mcr_opktbuf.pb_len = 0;
- dmap->d_dma->d_mcr.mcr_opktbuf.pb_next =
- htole32(dmap->d_alloc.dma_paddr +
- offsetof(struct ubsec_dmachunk, d_macbuf[0]));
-#ifdef UBSEC_DEBUG
- DPRINTF("opkt: %x %x %x\n",
- dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr,
- dmap->d_dma->d_mcr.mcr_opktbuf.pb_len,
- dmap->d_dma->d_mcr.mcr_opktbuf.pb_next);
-#endif
- } else {
- if (crp->crp_flags & CRYPTO_F_IOV) {
- if (!nicealign) {
- err = EINVAL;
- goto errout;
- }
-#if 0
- if (bus_dmamap_create(sc->sc_dmat, 0xfff0,
- UBS_MAX_SCATTER, 0xfff0, 0, BUS_DMA_NOWAIT,
- &q->q_dst_map) != 0) {
- err = ENOMEM;
- goto errout;
- }
- if (bus_dmamap_load_uio(sc->sc_dmat, q->q_dst_map,
- q->q_dst_io, BUS_DMA_NOWAIT) != 0) {
- bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
- q->q_dst_map = NULL;
- goto errout;
- }
-#endif
-
- /* HW shall copy the result into the source memory */
- for(i = 0; i < q->q_src_len; i++)
- q->q_dst_map[i] = q->q_src_map[i];
-
- q->q_dst_len = q->q_src_len;
- q->q_has_dst = 0;
-
- } else if (crp->crp_flags & CRYPTO_F_SKBUF) {
- if (nicealign) {
-
- /* HW shall copy the result into the source memory */
- q->q_dst_m = q->q_src_m;
- for(i = 0; i < q->q_src_len; i++)
- q->q_dst_map[i] = q->q_src_map[i];
-
- q->q_dst_len = q->q_src_len;
- q->q_has_dst = 0;
-
- } else {
-#ifdef NOTYET
- int totlen, len;
- struct sk_buff *m, *top, **mp;
-
- totlen = q->q_src_map->dm_mapsize;
- if (q->q_src_m->m_flags & M_PKTHDR) {
- len = MHLEN;
- MGETHDR(m, M_DONTWAIT, MT_DATA);
- } else {
- len = MLEN;
- MGET(m, M_DONTWAIT, MT_DATA);
- }
- if (m == NULL) {
- err = ENOMEM;
- goto errout;
- }
- if (len == MHLEN)
- M_DUP_PKTHDR(m, q->q_src_m);
- if (totlen >= MINCLSIZE) {
- MCLGET(m, M_DONTWAIT);
- if (m->m_flags & M_EXT)
- len = MCLBYTES;
- }
- m->m_len = len;
- top = NULL;
- mp = ⊤
-
- while (totlen > 0) {
- if (top) {
- MGET(m, M_DONTWAIT, MT_DATA);
- if (m == NULL) {
- m_freem(top);
- err = ENOMEM;
- goto errout;
- }
- len = MLEN;
- }
- if (top && totlen >= MINCLSIZE) {
- MCLGET(m, M_DONTWAIT);
- if (m->m_flags & M_EXT)
- len = MCLBYTES;
- }
- m->m_len = len = min(totlen, len);
- totlen -= len;
- *mp = m;
- mp = &m->m_next;
- }
- q->q_dst_m = top;
- ubsec_mcopy(q->q_src_m, q->q_dst_m,
- cpskip, cpoffset);
- if (bus_dmamap_create(sc->sc_dmat, 0xfff0,
- UBS_MAX_SCATTER, 0xfff0, 0, BUS_DMA_NOWAIT,
- &q->q_dst_map) != 0) {
- err = ENOMEM;
- goto errout;
- }
- if (bus_dmamap_load_mbuf(sc->sc_dmat,
- q->q_dst_map, q->q_dst_m,
- BUS_DMA_NOWAIT) != 0) {
- bus_dmamap_destroy(sc->sc_dmat,
- q->q_dst_map);
- q->q_dst_map = NULL;
- err = ENOMEM;
- goto errout;
- }
-#else
- device_printf(sc->sc_dev,
- "%s,%d: CRYPTO_F_SKBUF unaligned not implemented\n",
- __FILE__, __LINE__);
- err = EINVAL;
- goto errout;
-#endif
- }
- } else {
- err = EINVAL;
- goto errout;
- }
-
-#ifdef UBSEC_DEBUG
- DPRINTF("dst skip: %d\n", dskip);
-#endif
- for (i = j = 0; i < q->q_dst_len; i++) {
- struct ubsec_pktbuf *pb;
- size_t packl = q->q_dst_map[i].dma_size;
- dma_addr_t packp = q->q_dst_map[i].dma_paddr;
-
- if (dskip >= packl) {
- dskip -= packl;
- continue;
- }
-
- packl -= dskip;
- packp += dskip;
- dskip = 0;
-
- if (packl > 0xfffc) {
- DPRINTF("Error: fragment size is bigger than 0xfffc.\n");
- err = EIO;
- goto errout;
- }
-
- if (j == 0)
- pb = &dmap->d_dma->d_mcr.mcr_opktbuf;
- else
- pb = &dmap->d_dma->d_dbuf[j - 1];
-
- pb->pb_addr = htole32(packp);
-
- if (dtheend) {
- if (packl > dtheend) {
- pb->pb_len = htole32(dtheend);
- dtheend = 0;
- } else {
- pb->pb_len = htole32(packl);
- dtheend -= packl;
- }
- } else
- pb->pb_len = htole32(packl);
-
- if ((i + 1) == q->q_dst_len) {
- if (maccrd)
- /* Authentication:
- * The last fragment of the output buffer
- * contains the HMAC. */
- pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
- offsetof(struct ubsec_dmachunk, d_macbuf[0]));
- else
- pb->pb_next = 0;
- } else
- pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
- offsetof(struct ubsec_dmachunk, d_dbuf[j]));
- j++;
- }
- }
-
- dmap->d_dma->d_mcr.mcr_cmdctxp = htole32(dmap->d_alloc.dma_paddr +
- offsetof(struct ubsec_dmachunk, d_ctx));
-
- if (sc->sc_flags & UBS_FLAGS_LONGCTX) {
- /* new Broadcom cards with dynamic long command context structure */
-
- if (enccrd != NULL &&
- enccrd->crd_alg == CRYPTO_AES_CBC)
- {
- struct ubsec_pktctx_aes128 *ctxaes128;
- struct ubsec_pktctx_aes192 *ctxaes192;
- struct ubsec_pktctx_aes256 *ctxaes256;
-
- switch(ses->ses_keysize)
- {
- /* AES 128bit */
- case 128:
- ctxaes128 = (struct ubsec_pktctx_aes128 *)
- (dmap->d_alloc.dma_vaddr +
- offsetof(struct ubsec_dmachunk, d_ctx));
-
- ctxaes128->pc_len = htole16(sizeof(struct ubsec_pktctx_aes128));
- ctxaes128->pc_type = ctx.pc_type;
- ctxaes128->pc_flags = ctx.pc_flags;
- ctxaes128->pc_offset = ctx.pc_offset;
- for (i = 0; i < 4; i++)
- ctxaes128->pc_aeskey[i] = ctx.pc_key[i];
- for (i = 0; i < 5; i++)
- ctxaes128->pc_hminner[i] = ctx.pc_hminner[i];
- for (i = 0; i < 5; i++)
- ctxaes128->pc_hmouter[i] = ctx.pc_hmouter[i];
- for (i = 0; i < 4; i++)
- ctxaes128->pc_iv[i] = ctx.pc_iv[i];
- break;
-
- /* AES 192bit */
- case 192:
- ctxaes192 = (struct ubsec_pktctx_aes192 *)
- (dmap->d_alloc.dma_vaddr +
- offsetof(struct ubsec_dmachunk, d_ctx));
-
- ctxaes192->pc_len = htole16(sizeof(struct ubsec_pktctx_aes192));
- ctxaes192->pc_type = ctx.pc_type;
- ctxaes192->pc_flags = ctx.pc_flags;
- ctxaes192->pc_offset = ctx.pc_offset;
- for (i = 0; i < 6; i++)
- ctxaes192->pc_aeskey[i] = ctx.pc_key[i];
- for (i = 0; i < 5; i++)
- ctxaes192->pc_hminner[i] = ctx.pc_hminner[i];
- for (i = 0; i < 5; i++)
- ctxaes192->pc_hmouter[i] = ctx.pc_hmouter[i];
- for (i = 0; i < 4; i++)
- ctxaes192->pc_iv[i] = ctx.pc_iv[i];
- break;
-
- /* AES 256bit */
- case 256:
- ctxaes256 = (struct ubsec_pktctx_aes256 *)
- (dmap->d_alloc.dma_vaddr +
- offsetof(struct ubsec_dmachunk, d_ctx));
-
- ctxaes256->pc_len = htole16(sizeof(struct ubsec_pktctx_aes256));
- ctxaes256->pc_type = ctx.pc_type;
- ctxaes256->pc_flags = ctx.pc_flags;
- ctxaes256->pc_offset = ctx.pc_offset;
- for (i = 0; i < 8; i++)
- ctxaes256->pc_aeskey[i] = ctx.pc_key[i];
- for (i = 0; i < 5; i++)
- ctxaes256->pc_hminner[i] = ctx.pc_hminner[i];
- for (i = 0; i < 5; i++)
- ctxaes256->pc_hmouter[i] = ctx.pc_hmouter[i];
- for (i = 0; i < 4; i++)
- ctxaes256->pc_iv[i] = ctx.pc_iv[i];
- break;
-
- }
- } else {
- /*
- * [3]DES / MD5_HMAC / SHA1_HMAC
- *
- * MD5_HMAC / SHA1_HMAC can use the IPSEC 3DES operation without
- * encryption.
- */
- struct ubsec_pktctx_des *ctxdes;
-
- ctxdes = (struct ubsec_pktctx_des *)(dmap->d_alloc.dma_vaddr +
- offsetof(struct ubsec_dmachunk, d_ctx));
-
- ctxdes->pc_len = htole16(sizeof(struct ubsec_pktctx_des));
- ctxdes->pc_type = ctx.pc_type;
- ctxdes->pc_flags = ctx.pc_flags;
- ctxdes->pc_offset = ctx.pc_offset;
- for (i = 0; i < 6; i++)
- ctxdes->pc_deskey[i] = ctx.pc_key[i];
- for (i = 0; i < 5; i++)
- ctxdes->pc_hminner[i] = ctx.pc_hminner[i];
- for (i = 0; i < 5; i++)
- ctxdes->pc_hmouter[i] = ctx.pc_hmouter[i];
- ctxdes->pc_iv[0] = ctx.pc_iv[0];
- ctxdes->pc_iv[1] = ctx.pc_iv[1];
- }
- } else
- {
- /* old Broadcom card with fixed small command context structure */
-
- /*
- * [3]DES / MD5_HMAC / SHA1_HMAC
- */
- struct ubsec_pktctx *ctxs;
-
- ctxs = (struct ubsec_pktctx *)(dmap->d_alloc.dma_vaddr +
- offsetof(struct ubsec_dmachunk, d_ctx));
-
- /* transform generic context into small context */
- for (i = 0; i < 6; i++)
- ctxs->pc_deskey[i] = ctx.pc_key[i];
- for (i = 0; i < 5; i++)
- ctxs->pc_hminner[i] = ctx.pc_hminner[i];
- for (i = 0; i < 5; i++)
- ctxs->pc_hmouter[i] = ctx.pc_hmouter[i];
- ctxs->pc_iv[0] = ctx.pc_iv[0];
- ctxs->pc_iv[1] = ctx.pc_iv[1];
- ctxs->pc_flags = ctx.pc_flags;
- ctxs->pc_offset = ctx.pc_offset;
- }
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("spin_lock_irqsave\n");
-#endif
- spin_lock_irqsave(&sc->sc_ringmtx, flags);
- //spin_lock_irq(&sc->sc_ringmtx);
-
- BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_queue, q, q_next);
- sc->sc_nqueue++;
- ubsecstats.hst_ipackets++;
- ubsecstats.hst_ibytes += stheend;
- ubsec_feed(sc);
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("spin_unlock_irqrestore\n");
-#endif
- spin_unlock_irqrestore(&sc->sc_ringmtx, flags);
- //spin_unlock_irq(&sc->sc_ringmtx);
-
- return (0);
-
-errout:
- if (q != NULL) {
-#ifdef NOTYET
- if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m))
- m_freem(q->q_dst_m);
-#endif
-
- if ((q->q_has_dst == 1) && q->q_dst_len > 0) {
-#if 0
- bus_dmamap_unload(sc->sc_dmat, q->q_dst_map);
- bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
-#endif
- dma_unmap(sc, q->q_dst_map, q->q_dst_len);
- }
- if (q->q_src_len > 0) {
-#if 0
- bus_dmamap_unload(sc->sc_dmat, q->q_src_map);
- bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
-#endif
- dma_unmap(sc, q->q_src_map, q->q_src_len);
- }
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("spin_lock_irqsave\n");
-#endif
- spin_lock_irqsave(&sc->sc_ringmtx, flags);
- //spin_lock_irq(&sc->sc_ringmtx);
-
- BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
-
-#ifdef UBSEC_VERBOSE_DEBUG
- DPRINTF("spin_unlock_irqrestore\n");
-#endif
- spin_unlock_irqrestore(&sc->sc_ringmtx, flags);
- //spin_unlock_irq(&sc->sc_ringmtx);
-
- }
- if (err == EINVAL)
- ubsecstats.hst_invalid++;
- else
- ubsecstats.hst_nomem++;
-errout2:
- crp->crp_etype = err;
- crypto_done(crp);
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s() err = %x\n", __FUNCTION__, err);
-#endif
-
- return (0);
-}
-
-void
-ubsec_callback(struct ubsec_softc *sc, struct ubsec_q *q)
-{
- struct cryptop *crp = (struct cryptop *)q->q_crp;
- struct cryptodesc *crd;
- struct ubsec_dma *dmap = q->q_dma;
- int ivsize = 8;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- ubsecstats.hst_opackets++;
- ubsecstats.hst_obytes += dmap->d_alloc.dma_size;
-
-#if 0
- bus_dmamap_sync(sc->sc_dmat, dmap->d_alloc.dma_map, 0,
- dmap->d_alloc.dma_map->dm_mapsize,
- BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
- if (q->q_dst_map != NULL && q->q_dst_map != q->q_src_map) {
- bus_dmamap_sync(sc->sc_dmat, q->q_dst_map,
- 0, q->q_dst_map->dm_mapsize, BUS_DMASYNC_POSTREAD);
- bus_dmamap_unload(sc->sc_dmat, q->q_dst_map);
- bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
- }
- bus_dmamap_sync(sc->sc_dmat, q->q_src_map,
- 0, q->q_src_map->dm_mapsize, BUS_DMASYNC_POSTWRITE);
- bus_dmamap_unload(sc->sc_dmat, q->q_src_map);
- bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
-#endif
-
- if ((q->q_has_dst == 1) && q->q_dst_len > 0)
- dma_unmap(sc, q->q_dst_map, q->q_dst_len);
-
- dma_unmap(sc, q->q_src_map, q->q_src_len);
-
-#ifdef NOTYET
- if ((crp->crp_flags & CRYPTO_F_SKBUF) && (q->q_src_m != q->q_dst_m)) {
- m_freem(q->q_src_m);
- crp->crp_buf = (caddr_t)q->q_dst_m;
- }
-#endif
-
- /* copy out IV for future use */
- if (q->q_flags & UBSEC_QFLAGS_COPYOUTIV) {
- for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
- if (crd->crd_alg != CRYPTO_DES_CBC &&
- crd->crd_alg != CRYPTO_3DES_CBC &&
- crd->crd_alg != CRYPTO_AES_CBC)
- continue;
-
- if (crd->crd_alg == CRYPTO_AES_CBC)
- ivsize = 16;
- else
- ivsize = 8;
-
- if (crp->crp_flags & CRYPTO_F_SKBUF)
-#if 0
- m_copydata((struct sk_buff *)crp->crp_buf,
- crd->crd_skip + crd->crd_len - 8, 8,
- (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv);
-#endif
- crypto_copydata(crp->crp_flags, (caddr_t)crp->crp_buf,
- crd->crd_skip + crd->crd_len - ivsize, ivsize,
- (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv);
-
- else if (crp->crp_flags & CRYPTO_F_IOV) {
-#if 0
- cuio_copydata((struct uio *)crp->crp_buf,
- crd->crd_skip + crd->crd_len - 8, 8,
- (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv);
-#endif
- crypto_copydata(crp->crp_flags, (caddr_t)crp->crp_buf,
- crd->crd_skip + crd->crd_len - ivsize, ivsize,
- (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv);
-
- }
- break;
- }
- }
-
- for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
- if (crd->crd_alg != CRYPTO_MD5_HMAC &&
- crd->crd_alg != CRYPTO_SHA1_HMAC)
- continue;
-#if 0
- if (crp->crp_flags & CRYPTO_F_SKBUF)
- m_copyback((struct sk_buff *)crp->crp_buf,
- crd->crd_inject, 12,
- dmap->d_dma->d_macbuf);
-#endif
-#if 0
- /* BUG? it does not honor the mac len.. */
- crypto_copyback(crp->crp_flags, crp->crp_buf,
- crd->crd_inject, 12,
- (caddr_t)dmap->d_dma->d_macbuf);
-#endif
- crypto_copyback(crp->crp_flags, crp->crp_buf,
- crd->crd_inject,
- sc->sc_sessions[q->q_sesn].ses_mlen,
- (caddr_t)dmap->d_dma->d_macbuf);
-#if 0
- else if (crp->crp_flags & CRYPTO_F_IOV && crp->crp_mac)
- bcopy((caddr_t)dmap->d_dma->d_macbuf,
- crp->crp_mac, 12);
-#endif
- break;
- }
- BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
- crypto_done(crp);
-}
-
-void
-ubsec_mcopy(struct sk_buff *srcm, struct sk_buff *dstm, int hoffset, int toffset)
-{
- int i, j, dlen, slen;
- caddr_t dptr, sptr;
-
- j = 0;
- sptr = srcm->data;
- slen = srcm->len;
- dptr = dstm->data;
- dlen = dstm->len;
-
- while (1) {
- for (i = 0; i < min(slen, dlen); i++) {
- if (j < hoffset || j >= toffset)
- *dptr++ = *sptr++;
- slen--;
- dlen--;
- j++;
- }
- if (slen == 0) {
- srcm = srcm->next;
- if (srcm == NULL)
- return;
- sptr = srcm->data;
- slen = srcm->len;
- }
- if (dlen == 0) {
- dstm = dstm->next;
- if (dstm == NULL)
- return;
- dptr = dstm->data;
- dlen = dstm->len;
- }
- }
-}
-
-int
-ubsec_dma_malloc(struct ubsec_softc *sc, struct ubsec_dma_alloc *dma,
- size_t size, int mapflags)
-{
- dma->dma_vaddr = dma_alloc_coherent(sc->sc_dv,
- size, &dma->dma_paddr, GFP_KERNEL);
-
- if (likely(dma->dma_vaddr))
- {
- dma->dma_size = size;
- return (0);
- }
-
- DPRINTF("could not allocate %d bytes of coherent memory.\n", size);
-
- return (1);
-}
-
-void
-ubsec_dma_free(struct ubsec_softc *sc, struct ubsec_dma_alloc *dma)
-{
- dma_free_coherent(sc->sc_dv, dma->dma_size, dma->dma_vaddr,
- dma->dma_paddr);
-}
-
-/*
- * Resets the board. Values in the regesters are left as is
- * from the reset (i.e. initial values are assigned elsewhere).
- */
-void
-ubsec_reset_board(struct ubsec_softc *sc)
-{
- volatile u_int32_t ctrl;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
- DPRINTF("Send reset signal to chip.\n");
-
- ctrl = READ_REG(sc, BS_CTRL);
- ctrl |= BS_CTRL_RESET;
- WRITE_REG(sc, BS_CTRL, ctrl);
-
- /*
- * Wait aprox. 30 PCI clocks = 900 ns = 0.9 us
- */
- DELAY(10);
-}
-
-/*
- * Init Broadcom registers
- */
-void
-ubsec_init_board(struct ubsec_softc *sc)
-{
- u_int32_t ctrl;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
- DPRINTF("Initialize chip.\n");
-
- ctrl = READ_REG(sc, BS_CTRL);
- ctrl &= ~(BS_CTRL_BE32 | BS_CTRL_BE64);
- ctrl |= BS_CTRL_LITTLE_ENDIAN | BS_CTRL_MCR1INT | BS_CTRL_DMAERR;
-
- WRITE_REG(sc, BS_CTRL, ctrl);
-
- /* Set chip capabilities (BCM5365P) */
- sc->sc_flags |= UBS_FLAGS_LONGCTX | UBS_FLAGS_AES;
-}
-
-/*
- * Clean up after a chip crash.
- * It is assumed that the caller has spin_lock_irq(sc_ringmtx).
- */
-void
-ubsec_cleanchip(struct ubsec_softc *sc)
-{
- struct ubsec_q *q;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
- DPRINTF("Clean up queues after chip crash.\n");
-
- while (!BSD_SIMPLEQ_EMPTY(&sc->sc_qchip)) {
- q = BSD_SIMPLEQ_FIRST(&sc->sc_qchip);
- BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q_next);
- ubsec_free_q(sc, q);
- }
-}
-
-/*
- * free a ubsec_q
- * It is assumed that the caller has spin_lock_irq(sc_ringmtx).
- */
-int
-ubsec_free_q(struct ubsec_softc *sc, struct ubsec_q *q)
-{
- struct ubsec_q *q2;
- struct cryptop *crp;
- int npkts;
- int i;
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
-
- npkts = q->q_nstacked_mcrs;
-
- for (i = 0; i < npkts; i++) {
- if(q->q_stacked_mcr[i]) {
- q2 = q->q_stacked_mcr[i];
-
- if ((q2->q_dst_m != NULL) && (q2->q_src_m != q2->q_dst_m))
-#ifdef NOTYET
- m_freem(q2->q_dst_m);
-#else
- printk(KERN_ERR "%s,%d: SKB not supported\n", __FILE__, __LINE__);
-#endif
-
- crp = (struct cryptop *)q2->q_crp;
-
- BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q2, q_next);
-
- crp->crp_etype = EFAULT;
- crypto_done(crp);
- } else {
- break;
- }
- }
-
- /*
- * Free header MCR
- */
- if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m))
-#ifdef NOTYET
- m_freem(q->q_dst_m);
-#else
- printk(KERN_ERR "%s,%d: SKB not supported\n", __FILE__, __LINE__);
-#endif
-
- crp = (struct cryptop *)q->q_crp;
-
- BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
-
- crp->crp_etype = EFAULT;
- crypto_done(crp);
- return(0);
-}
-
-/*
- * Routine to reset the chip and clean up.
- * It is assumed that the caller has spin_lock_irq(sc_ringmtx).
- */
-void
-ubsec_totalreset(struct ubsec_softc *sc)
-{
-
-#ifdef UBSEC_DEBUG
- DPRINTF("%s()\n", __FUNCTION__);
-#endif
- DPRINTF("initiate total chip reset.. \n");
- ubsec_reset_board(sc);
- ubsec_init_board(sc);
- ubsec_cleanchip(sc);
-}
-
-void
-ubsec_dump_pb(struct ubsec_pktbuf *pb)
-{
- printf("addr 0x%x (0x%x) next 0x%x\n",
- pb->pb_addr, pb->pb_len, pb->pb_next);
-}
-
-void
-ubsec_dump_mcr(struct ubsec_mcr *mcr)
-{
- struct ubsec_mcr_add *ma;
- int i;
-
- printf("MCR:\n");
- printf(" pkts: %u, flags 0x%x\n",
- letoh16(mcr->mcr_pkts), letoh16(mcr->mcr_flags));
- ma = (struct ubsec_mcr_add *)&mcr->mcr_cmdctxp;
- for (i = 0; i < letoh16(mcr->mcr_pkts); i++) {
- printf(" %d: ctx 0x%x len 0x%x rsvd 0x%x\n", i,
- letoh32(ma->mcr_cmdctxp), letoh16(ma->mcr_pktlen),
- letoh16(ma->mcr_reserved));
- printf(" %d: ipkt ", i);
- ubsec_dump_pb(&ma->mcr_ipktbuf);
- printf(" %d: opkt ", i);
- ubsec_dump_pb(&ma->mcr_opktbuf);
- ma++;
- }
- printf("END MCR\n");
-}
-
-static int __init mod_init(void) {
- return ssb_driver_register(&ubsec_ssb_driver);
-}
-
-static void __exit mod_exit(void) {
- ssb_driver_unregister(&ubsec_ssb_driver);
-}
-
-module_init(mod_init);
-module_exit(mod_exit);
-
-// Meta information
-MODULE_AUTHOR("Daniel Mueller <daniel@danm.de>");
-MODULE_LICENSE("BSD");
-MODULE_DESCRIPTION("OCF driver for BCM5365P IPSec Core");
-MODULE_VERSION(DRV_MODULE_VERSION);
-
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