| |
| /* |
| * 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 |
| |
| #define HMAC_HACK 1 |
| #ifdef HMAC_HACK |
| #include <safe/hmachack.h> |
| #include <safe/md5.h> |
| #include <safe/md5.c> |
| #include <safe/sha1.h> |
| #include <safe/sha1.c> |
| #endif |
| |
| #include "bsdqueue.h" |
| #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_frag_page(&skb_shinfo(skb)->frags[i])) + |
| skb_shinfo(skb)->frags[i].page_offset, skb_shinfo(skb)->frags[i].size); |
| #endif |
| |
| tmp = dma_map_single(sc->sc_dv, |
| page_address(skb_frag_page(&skb_shinfo(skb)->frags[i])) + |
| 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_frag_page(&skb_shinfo(skb)->frags[i])) + |
| 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(2,6,36)) |
| 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); |
| |