![Eric Biggers](/assets/img/avatar_default.png)
Some aead algorithms set .cra_flags = CRYPTO_ALG_TYPE_AEAD. But this is redundant with the C structure type ('struct aead_alg'), and crypto_register_aead() already sets the type flag automatically, clearing any type flag that was already there. Apparently the useless assignment has just been copy+pasted around. So, remove the useless assignment from all the aead algorithms. This patch shouldn't change any actual behavior. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
4944 lines
135 KiB
C
4944 lines
135 KiB
C
/*
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* Copyright 2016 Broadcom
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation (the "GPL").
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 (GPLv2) for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 (GPLv2) along with this source code.
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*/
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/scatterlist.h>
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#include <linux/crypto.h>
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#include <linux/kthread.h>
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#include <linux/rtnetlink.h>
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#include <linux/sched.h>
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#include <linux/of_address.h>
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#include <linux/of_device.h>
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#include <linux/io.h>
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#include <linux/bitops.h>
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#include <crypto/algapi.h>
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#include <crypto/aead.h>
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#include <crypto/internal/aead.h>
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#include <crypto/aes.h>
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#include <crypto/des.h>
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#include <crypto/hmac.h>
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#include <crypto/sha.h>
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#include <crypto/md5.h>
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#include <crypto/authenc.h>
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#include <crypto/skcipher.h>
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#include <crypto/hash.h>
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#include <crypto/sha3.h>
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#include "util.h"
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#include "cipher.h"
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#include "spu.h"
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#include "spum.h"
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#include "spu2.h"
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/* ================= Device Structure ================== */
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struct device_private iproc_priv;
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/* ==================== Parameters ===================== */
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int flow_debug_logging;
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module_param(flow_debug_logging, int, 0644);
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MODULE_PARM_DESC(flow_debug_logging, "Enable Flow Debug Logging");
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int packet_debug_logging;
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module_param(packet_debug_logging, int, 0644);
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MODULE_PARM_DESC(packet_debug_logging, "Enable Packet Debug Logging");
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int debug_logging_sleep;
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module_param(debug_logging_sleep, int, 0644);
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MODULE_PARM_DESC(debug_logging_sleep, "Packet Debug Logging Sleep");
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/*
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* The value of these module parameters is used to set the priority for each
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* algo type when this driver registers algos with the kernel crypto API.
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* To use a priority other than the default, set the priority in the insmod or
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* modprobe. Changing the module priority after init time has no effect.
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*
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* The default priorities are chosen to be lower (less preferred) than ARMv8 CE
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* algos, but more preferred than generic software algos.
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*/
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static int cipher_pri = 150;
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module_param(cipher_pri, int, 0644);
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MODULE_PARM_DESC(cipher_pri, "Priority for cipher algos");
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static int hash_pri = 100;
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module_param(hash_pri, int, 0644);
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MODULE_PARM_DESC(hash_pri, "Priority for hash algos");
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static int aead_pri = 150;
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module_param(aead_pri, int, 0644);
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MODULE_PARM_DESC(aead_pri, "Priority for AEAD algos");
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/* A type 3 BCM header, expected to precede the SPU header for SPU-M.
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* Bits 3 and 4 in the first byte encode the channel number (the dma ringset).
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* 0x60 - ring 0
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* 0x68 - ring 1
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* 0x70 - ring 2
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* 0x78 - ring 3
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*/
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char BCMHEADER[] = { 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28 };
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/*
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* Some SPU hw does not use BCM header on SPU messages. So BCM_HDR_LEN
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* is set dynamically after reading SPU type from device tree.
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*/
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#define BCM_HDR_LEN iproc_priv.bcm_hdr_len
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/* min and max time to sleep before retrying when mbox queue is full. usec */
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#define MBOX_SLEEP_MIN 800
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#define MBOX_SLEEP_MAX 1000
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/**
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* select_channel() - Select a SPU channel to handle a crypto request. Selects
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* channel in round robin order.
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*
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* Return: channel index
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*/
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static u8 select_channel(void)
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{
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u8 chan_idx = atomic_inc_return(&iproc_priv.next_chan);
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return chan_idx % iproc_priv.spu.num_chan;
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}
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/**
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* spu_ablkcipher_rx_sg_create() - Build up the scatterlist of buffers used to
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* receive a SPU response message for an ablkcipher request. Includes buffers to
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* catch SPU message headers and the response data.
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* @mssg: mailbox message containing the receive sg
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* @rctx: crypto request context
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* @rx_frag_num: number of scatterlist elements required to hold the
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* SPU response message
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* @chunksize: Number of bytes of response data expected
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* @stat_pad_len: Number of bytes required to pad the STAT field to
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* a 4-byte boundary
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*
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* The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
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* when the request completes, whether the request is handled successfully or
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* there is an error.
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*
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* Returns:
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* 0 if successful
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* < 0 if an error
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*/
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static int
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spu_ablkcipher_rx_sg_create(struct brcm_message *mssg,
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struct iproc_reqctx_s *rctx,
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u8 rx_frag_num,
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unsigned int chunksize, u32 stat_pad_len)
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{
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struct spu_hw *spu = &iproc_priv.spu;
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struct scatterlist *sg; /* used to build sgs in mbox message */
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struct iproc_ctx_s *ctx = rctx->ctx;
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u32 datalen; /* Number of bytes of response data expected */
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mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),
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rctx->gfp);
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if (!mssg->spu.dst)
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return -ENOMEM;
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sg = mssg->spu.dst;
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sg_init_table(sg, rx_frag_num);
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/* Space for SPU message header */
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sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);
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/* If XTS tweak in payload, add buffer to receive encrypted tweak */
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if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
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spu->spu_xts_tweak_in_payload())
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sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak,
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SPU_XTS_TWEAK_SIZE);
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/* Copy in each dst sg entry from request, up to chunksize */
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datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip,
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rctx->dst_nents, chunksize);
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if (datalen < chunksize) {
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pr_err("%s(): failed to copy dst sg to mbox msg. chunksize %u, datalen %u",
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__func__, chunksize, datalen);
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return -EFAULT;
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}
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if (ctx->cipher.alg == CIPHER_ALG_RC4)
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/* Add buffer to catch 260-byte SUPDT field for RC4 */
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sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak, SPU_SUPDT_LEN);
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if (stat_pad_len)
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sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);
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memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);
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sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());
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return 0;
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}
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/**
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* spu_ablkcipher_tx_sg_create() - Build up the scatterlist of buffers used to
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* send a SPU request message for an ablkcipher request. Includes SPU message
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* headers and the request data.
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* @mssg: mailbox message containing the transmit sg
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* @rctx: crypto request context
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* @tx_frag_num: number of scatterlist elements required to construct the
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* SPU request message
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* @chunksize: Number of bytes of request data
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* @pad_len: Number of pad bytes
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*
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* The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
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* when the request completes, whether the request is handled successfully or
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* there is an error.
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*
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* Returns:
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* 0 if successful
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* < 0 if an error
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*/
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static int
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spu_ablkcipher_tx_sg_create(struct brcm_message *mssg,
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struct iproc_reqctx_s *rctx,
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u8 tx_frag_num, unsigned int chunksize, u32 pad_len)
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{
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struct spu_hw *spu = &iproc_priv.spu;
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struct scatterlist *sg; /* used to build sgs in mbox message */
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struct iproc_ctx_s *ctx = rctx->ctx;
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u32 datalen; /* Number of bytes of response data expected */
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u32 stat_len;
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mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),
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rctx->gfp);
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if (unlikely(!mssg->spu.src))
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return -ENOMEM;
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sg = mssg->spu.src;
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sg_init_table(sg, tx_frag_num);
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sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,
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BCM_HDR_LEN + ctx->spu_req_hdr_len);
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/* if XTS tweak in payload, copy from IV (where crypto API puts it) */
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if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
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spu->spu_xts_tweak_in_payload())
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sg_set_buf(sg++, rctx->msg_buf.iv_ctr, SPU_XTS_TWEAK_SIZE);
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/* Copy in each src sg entry from request, up to chunksize */
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datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,
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rctx->src_nents, chunksize);
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if (unlikely(datalen < chunksize)) {
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pr_err("%s(): failed to copy src sg to mbox msg",
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__func__);
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return -EFAULT;
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}
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if (pad_len)
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sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);
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stat_len = spu->spu_tx_status_len();
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if (stat_len) {
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memset(rctx->msg_buf.tx_stat, 0, stat_len);
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sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);
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}
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return 0;
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}
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static int mailbox_send_message(struct brcm_message *mssg, u32 flags,
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u8 chan_idx)
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{
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int err;
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int retry_cnt = 0;
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struct device *dev = &(iproc_priv.pdev->dev);
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err = mbox_send_message(iproc_priv.mbox[chan_idx], mssg);
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if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) {
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while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) {
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/*
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* Mailbox queue is full. Since MAY_SLEEP is set, assume
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* not in atomic context and we can wait and try again.
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*/
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retry_cnt++;
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usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX);
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err = mbox_send_message(iproc_priv.mbox[chan_idx],
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mssg);
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atomic_inc(&iproc_priv.mb_no_spc);
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}
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}
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if (err < 0) {
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atomic_inc(&iproc_priv.mb_send_fail);
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return err;
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}
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/* Check error returned by mailbox controller */
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err = mssg->error;
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if (unlikely(err < 0)) {
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dev_err(dev, "message error %d", err);
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/* Signal txdone for mailbox channel */
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}
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/* Signal txdone for mailbox channel */
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mbox_client_txdone(iproc_priv.mbox[chan_idx], err);
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return err;
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}
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/**
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* handle_ablkcipher_req() - Submit as much of a block cipher request as fits in
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* a single SPU request message, starting at the current position in the request
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* data.
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* @rctx: Crypto request context
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*
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* This may be called on the crypto API thread, or, when a request is so large
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* it must be broken into multiple SPU messages, on the thread used to invoke
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* the response callback. When requests are broken into multiple SPU
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* messages, we assume subsequent messages depend on previous results, and
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* thus always wait for previous results before submitting the next message.
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* Because requests are submitted in lock step like this, there is no need
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* to synchronize access to request data structures.
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*
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* Return: -EINPROGRESS: request has been accepted and result will be returned
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* asynchronously
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* Any other value indicates an error
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*/
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static int handle_ablkcipher_req(struct iproc_reqctx_s *rctx)
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{
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struct spu_hw *spu = &iproc_priv.spu;
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struct crypto_async_request *areq = rctx->parent;
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struct ablkcipher_request *req =
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container_of(areq, struct ablkcipher_request, base);
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struct iproc_ctx_s *ctx = rctx->ctx;
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struct spu_cipher_parms cipher_parms;
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int err = 0;
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unsigned int chunksize = 0; /* Num bytes of request to submit */
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int remaining = 0; /* Bytes of request still to process */
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int chunk_start; /* Beginning of data for current SPU msg */
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/* IV or ctr value to use in this SPU msg */
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u8 local_iv_ctr[MAX_IV_SIZE];
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u32 stat_pad_len; /* num bytes to align status field */
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u32 pad_len; /* total length of all padding */
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bool update_key = false;
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struct brcm_message *mssg; /* mailbox message */
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/* number of entries in src and dst sg in mailbox message. */
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u8 rx_frag_num = 2; /* response header and STATUS */
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u8 tx_frag_num = 1; /* request header */
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flow_log("%s\n", __func__);
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cipher_parms.alg = ctx->cipher.alg;
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cipher_parms.mode = ctx->cipher.mode;
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cipher_parms.type = ctx->cipher_type;
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cipher_parms.key_len = ctx->enckeylen;
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cipher_parms.key_buf = ctx->enckey;
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cipher_parms.iv_buf = local_iv_ctr;
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cipher_parms.iv_len = rctx->iv_ctr_len;
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mssg = &rctx->mb_mssg;
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chunk_start = rctx->src_sent;
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remaining = rctx->total_todo - chunk_start;
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/* determine the chunk we are breaking off and update the indexes */
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if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&
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(remaining > ctx->max_payload))
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chunksize = ctx->max_payload;
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else
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chunksize = remaining;
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rctx->src_sent += chunksize;
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rctx->total_sent = rctx->src_sent;
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/* Count number of sg entries to be included in this request */
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rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize);
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rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize);
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if ((ctx->cipher.mode == CIPHER_MODE_CBC) &&
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rctx->is_encrypt && chunk_start)
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/*
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* Encrypting non-first first chunk. Copy last block of
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* previous result to IV for this chunk.
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*/
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sg_copy_part_to_buf(req->dst, rctx->msg_buf.iv_ctr,
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rctx->iv_ctr_len,
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chunk_start - rctx->iv_ctr_len);
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if (rctx->iv_ctr_len) {
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/* get our local copy of the iv */
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__builtin_memcpy(local_iv_ctr, rctx->msg_buf.iv_ctr,
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rctx->iv_ctr_len);
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/* generate the next IV if possible */
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if ((ctx->cipher.mode == CIPHER_MODE_CBC) &&
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!rctx->is_encrypt) {
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/*
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* CBC Decrypt: next IV is the last ciphertext block in
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* this chunk
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*/
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sg_copy_part_to_buf(req->src, rctx->msg_buf.iv_ctr,
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rctx->iv_ctr_len,
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rctx->src_sent - rctx->iv_ctr_len);
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} else if (ctx->cipher.mode == CIPHER_MODE_CTR) {
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/*
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* The SPU hardware increments the counter once for
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* each AES block of 16 bytes. So update the counter
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* for the next chunk, if there is one. Note that for
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* this chunk, the counter has already been copied to
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* local_iv_ctr. We can assume a block size of 16,
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* because we only support CTR mode for AES, not for
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* any other cipher alg.
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*/
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add_to_ctr(rctx->msg_buf.iv_ctr, chunksize >> 4);
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}
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}
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if (ctx->cipher.alg == CIPHER_ALG_RC4) {
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rx_frag_num++;
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if (chunk_start) {
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/*
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* for non-first RC4 chunks, use SUPDT from previous
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* response as key for this chunk.
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*/
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cipher_parms.key_buf = rctx->msg_buf.c.supdt_tweak;
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update_key = true;
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cipher_parms.type = CIPHER_TYPE_UPDT;
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} else if (!rctx->is_encrypt) {
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/*
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* First RC4 chunk. For decrypt, key in pre-built msg
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* header may have been changed if encrypt required
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* multiple chunks. So revert the key to the
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* ctx->enckey value.
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*/
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update_key = true;
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cipher_parms.type = CIPHER_TYPE_INIT;
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}
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}
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if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
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flow_log("max_payload infinite\n");
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else
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flow_log("max_payload %u\n", ctx->max_payload);
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flow_log("sent:%u start:%u remains:%u size:%u\n",
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rctx->src_sent, chunk_start, remaining, chunksize);
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/* Copy SPU header template created at setkey time */
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memcpy(rctx->msg_buf.bcm_spu_req_hdr, ctx->bcm_spu_req_hdr,
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sizeof(rctx->msg_buf.bcm_spu_req_hdr));
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/*
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* Pass SUPDT field as key. Key field in finish() call is only used
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* when update_key has been set above for RC4. Will be ignored in
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* all other cases.
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*/
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spu->spu_cipher_req_finish(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
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ctx->spu_req_hdr_len, !(rctx->is_encrypt),
|
|
&cipher_parms, update_key, chunksize);
|
|
|
|
atomic64_add(chunksize, &iproc_priv.bytes_out);
|
|
|
|
stat_pad_len = spu->spu_wordalign_padlen(chunksize);
|
|
if (stat_pad_len)
|
|
rx_frag_num++;
|
|
pad_len = stat_pad_len;
|
|
if (pad_len) {
|
|
tx_frag_num++;
|
|
spu->spu_request_pad(rctx->msg_buf.spu_req_pad, 0,
|
|
0, ctx->auth.alg, ctx->auth.mode,
|
|
rctx->total_sent, stat_pad_len);
|
|
}
|
|
|
|
spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
|
|
ctx->spu_req_hdr_len);
|
|
packet_log("payload:\n");
|
|
dump_sg(rctx->src_sg, rctx->src_skip, chunksize);
|
|
packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len);
|
|
|
|
/*
|
|
* Build mailbox message containing SPU request msg and rx buffers
|
|
* to catch response message
|
|
*/
|
|
memset(mssg, 0, sizeof(*mssg));
|
|
mssg->type = BRCM_MESSAGE_SPU;
|
|
mssg->ctx = rctx; /* Will be returned in response */
|
|
|
|
/* Create rx scatterlist to catch result */
|
|
rx_frag_num += rctx->dst_nents;
|
|
|
|
if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
|
|
spu->spu_xts_tweak_in_payload())
|
|
rx_frag_num++; /* extra sg to insert tweak */
|
|
|
|
err = spu_ablkcipher_rx_sg_create(mssg, rctx, rx_frag_num, chunksize,
|
|
stat_pad_len);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Create tx scatterlist containing SPU request message */
|
|
tx_frag_num += rctx->src_nents;
|
|
if (spu->spu_tx_status_len())
|
|
tx_frag_num++;
|
|
|
|
if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
|
|
spu->spu_xts_tweak_in_payload())
|
|
tx_frag_num++; /* extra sg to insert tweak */
|
|
|
|
err = spu_ablkcipher_tx_sg_create(mssg, rctx, tx_frag_num, chunksize,
|
|
pad_len);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
|
|
if (unlikely(err < 0))
|
|
return err;
|
|
|
|
return -EINPROGRESS;
|
|
}
|
|
|
|
/**
|
|
* handle_ablkcipher_resp() - Process a block cipher SPU response. Updates the
|
|
* total received count for the request and updates global stats.
|
|
* @rctx: Crypto request context
|
|
*/
|
|
static void handle_ablkcipher_resp(struct iproc_reqctx_s *rctx)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
#ifdef DEBUG
|
|
struct crypto_async_request *areq = rctx->parent;
|
|
struct ablkcipher_request *req = ablkcipher_request_cast(areq);
|
|
#endif
|
|
struct iproc_ctx_s *ctx = rctx->ctx;
|
|
u32 payload_len;
|
|
|
|
/* See how much data was returned */
|
|
payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr);
|
|
|
|
/*
|
|
* In XTS mode, the first SPU_XTS_TWEAK_SIZE bytes may be the
|
|
* encrypted tweak ("i") value; we don't count those.
|
|
*/
|
|
if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
|
|
spu->spu_xts_tweak_in_payload() &&
|
|
(payload_len >= SPU_XTS_TWEAK_SIZE))
|
|
payload_len -= SPU_XTS_TWEAK_SIZE;
|
|
|
|
atomic64_add(payload_len, &iproc_priv.bytes_in);
|
|
|
|
flow_log("%s() offset: %u, bd_len: %u BD:\n",
|
|
__func__, rctx->total_received, payload_len);
|
|
|
|
dump_sg(req->dst, rctx->total_received, payload_len);
|
|
if (ctx->cipher.alg == CIPHER_ALG_RC4)
|
|
packet_dump(" supdt ", rctx->msg_buf.c.supdt_tweak,
|
|
SPU_SUPDT_LEN);
|
|
|
|
rctx->total_received += payload_len;
|
|
if (rctx->total_received == rctx->total_todo) {
|
|
atomic_inc(&iproc_priv.op_counts[SPU_OP_CIPHER]);
|
|
atomic_inc(
|
|
&iproc_priv.cipher_cnt[ctx->cipher.alg][ctx->cipher.mode]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* spu_ahash_rx_sg_create() - Build up the scatterlist of buffers used to
|
|
* receive a SPU response message for an ahash request.
|
|
* @mssg: mailbox message containing the receive sg
|
|
* @rctx: crypto request context
|
|
* @rx_frag_num: number of scatterlist elements required to hold the
|
|
* SPU response message
|
|
* @digestsize: length of hash digest, in bytes
|
|
* @stat_pad_len: Number of bytes required to pad the STAT field to
|
|
* a 4-byte boundary
|
|
*
|
|
* The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
|
|
* when the request completes, whether the request is handled successfully or
|
|
* there is an error.
|
|
*
|
|
* Return:
|
|
* 0 if successful
|
|
* < 0 if an error
|
|
*/
|
|
static int
|
|
spu_ahash_rx_sg_create(struct brcm_message *mssg,
|
|
struct iproc_reqctx_s *rctx,
|
|
u8 rx_frag_num, unsigned int digestsize,
|
|
u32 stat_pad_len)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct scatterlist *sg; /* used to build sgs in mbox message */
|
|
struct iproc_ctx_s *ctx = rctx->ctx;
|
|
|
|
mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),
|
|
rctx->gfp);
|
|
if (!mssg->spu.dst)
|
|
return -ENOMEM;
|
|
|
|
sg = mssg->spu.dst;
|
|
sg_init_table(sg, rx_frag_num);
|
|
/* Space for SPU message header */
|
|
sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);
|
|
|
|
/* Space for digest */
|
|
sg_set_buf(sg++, rctx->msg_buf.digest, digestsize);
|
|
|
|
if (stat_pad_len)
|
|
sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);
|
|
|
|
memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);
|
|
sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* spu_ahash_tx_sg_create() - Build up the scatterlist of buffers used to send
|
|
* a SPU request message for an ahash request. Includes SPU message headers and
|
|
* the request data.
|
|
* @mssg: mailbox message containing the transmit sg
|
|
* @rctx: crypto request context
|
|
* @tx_frag_num: number of scatterlist elements required to construct the
|
|
* SPU request message
|
|
* @spu_hdr_len: length in bytes of SPU message header
|
|
* @hash_carry_len: Number of bytes of data carried over from previous req
|
|
* @new_data_len: Number of bytes of new request data
|
|
* @pad_len: Number of pad bytes
|
|
*
|
|
* The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
|
|
* when the request completes, whether the request is handled successfully or
|
|
* there is an error.
|
|
*
|
|
* Return:
|
|
* 0 if successful
|
|
* < 0 if an error
|
|
*/
|
|
static int
|
|
spu_ahash_tx_sg_create(struct brcm_message *mssg,
|
|
struct iproc_reqctx_s *rctx,
|
|
u8 tx_frag_num,
|
|
u32 spu_hdr_len,
|
|
unsigned int hash_carry_len,
|
|
unsigned int new_data_len, u32 pad_len)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct scatterlist *sg; /* used to build sgs in mbox message */
|
|
u32 datalen; /* Number of bytes of response data expected */
|
|
u32 stat_len;
|
|
|
|
mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),
|
|
rctx->gfp);
|
|
if (!mssg->spu.src)
|
|
return -ENOMEM;
|
|
|
|
sg = mssg->spu.src;
|
|
sg_init_table(sg, tx_frag_num);
|
|
|
|
sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,
|
|
BCM_HDR_LEN + spu_hdr_len);
|
|
|
|
if (hash_carry_len)
|
|
sg_set_buf(sg++, rctx->hash_carry, hash_carry_len);
|
|
|
|
if (new_data_len) {
|
|
/* Copy in each src sg entry from request, up to chunksize */
|
|
datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,
|
|
rctx->src_nents, new_data_len);
|
|
if (datalen < new_data_len) {
|
|
pr_err("%s(): failed to copy src sg to mbox msg",
|
|
__func__);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
|
|
if (pad_len)
|
|
sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);
|
|
|
|
stat_len = spu->spu_tx_status_len();
|
|
if (stat_len) {
|
|
memset(rctx->msg_buf.tx_stat, 0, stat_len);
|
|
sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* handle_ahash_req() - Process an asynchronous hash request from the crypto
|
|
* API.
|
|
* @rctx: Crypto request context
|
|
*
|
|
* Builds a SPU request message embedded in a mailbox message and submits the
|
|
* mailbox message on a selected mailbox channel. The SPU request message is
|
|
* constructed as a scatterlist, including entries from the crypto API's
|
|
* src scatterlist to avoid copying the data to be hashed. This function is
|
|
* called either on the thread from the crypto API, or, in the case that the
|
|
* crypto API request is too large to fit in a single SPU request message,
|
|
* on the thread that invokes the receive callback with a response message.
|
|
* Because some operations require the response from one chunk before the next
|
|
* chunk can be submitted, we always wait for the response for the previous
|
|
* chunk before submitting the next chunk. Because requests are submitted in
|
|
* lock step like this, there is no need to synchronize access to request data
|
|
* structures.
|
|
*
|
|
* Return:
|
|
* -EINPROGRESS: request has been submitted to SPU and response will be
|
|
* returned asynchronously
|
|
* -EAGAIN: non-final request included a small amount of data, which for
|
|
* efficiency we did not submit to the SPU, but instead stored
|
|
* to be submitted to the SPU with the next part of the request
|
|
* other: an error code
|
|
*/
|
|
static int handle_ahash_req(struct iproc_reqctx_s *rctx)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct crypto_async_request *areq = rctx->parent;
|
|
struct ahash_request *req = ahash_request_cast(areq);
|
|
struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
|
|
struct crypto_tfm *tfm = crypto_ahash_tfm(ahash);
|
|
unsigned int blocksize = crypto_tfm_alg_blocksize(tfm);
|
|
struct iproc_ctx_s *ctx = rctx->ctx;
|
|
|
|
/* number of bytes still to be hashed in this req */
|
|
unsigned int nbytes_to_hash = 0;
|
|
int err = 0;
|
|
unsigned int chunksize = 0; /* length of hash carry + new data */
|
|
/*
|
|
* length of new data, not from hash carry, to be submitted in
|
|
* this hw request
|
|
*/
|
|
unsigned int new_data_len;
|
|
|
|
unsigned int chunk_start = 0;
|
|
u32 db_size; /* Length of data field, incl gcm and hash padding */
|
|
int pad_len = 0; /* total pad len, including gcm, hash, stat padding */
|
|
u32 data_pad_len = 0; /* length of GCM/CCM padding */
|
|
u32 stat_pad_len = 0; /* length of padding to align STATUS word */
|
|
struct brcm_message *mssg; /* mailbox message */
|
|
struct spu_request_opts req_opts;
|
|
struct spu_cipher_parms cipher_parms;
|
|
struct spu_hash_parms hash_parms;
|
|
struct spu_aead_parms aead_parms;
|
|
unsigned int local_nbuf;
|
|
u32 spu_hdr_len;
|
|
unsigned int digestsize;
|
|
u16 rem = 0;
|
|
|
|
/*
|
|
* number of entries in src and dst sg. Always includes SPU msg header.
|
|
* rx always includes a buffer to catch digest and STATUS.
|
|
*/
|
|
u8 rx_frag_num = 3;
|
|
u8 tx_frag_num = 1;
|
|
|
|
flow_log("total_todo %u, total_sent %u\n",
|
|
rctx->total_todo, rctx->total_sent);
|
|
|
|
memset(&req_opts, 0, sizeof(req_opts));
|
|
memset(&cipher_parms, 0, sizeof(cipher_parms));
|
|
memset(&hash_parms, 0, sizeof(hash_parms));
|
|
memset(&aead_parms, 0, sizeof(aead_parms));
|
|
|
|
req_opts.bd_suppress = true;
|
|
hash_parms.alg = ctx->auth.alg;
|
|
hash_parms.mode = ctx->auth.mode;
|
|
hash_parms.type = HASH_TYPE_NONE;
|
|
hash_parms.key_buf = (u8 *)ctx->authkey;
|
|
hash_parms.key_len = ctx->authkeylen;
|
|
|
|
/*
|
|
* For hash algorithms below assignment looks bit odd but
|
|
* it's needed for AES-XCBC and AES-CMAC hash algorithms
|
|
* to differentiate between 128, 192, 256 bit key values.
|
|
* Based on the key values, hash algorithm is selected.
|
|
* For example for 128 bit key, hash algorithm is AES-128.
|
|
*/
|
|
cipher_parms.type = ctx->cipher_type;
|
|
|
|
mssg = &rctx->mb_mssg;
|
|
chunk_start = rctx->src_sent;
|
|
|
|
/*
|
|
* Compute the amount remaining to hash. This may include data
|
|
* carried over from previous requests.
|
|
*/
|
|
nbytes_to_hash = rctx->total_todo - rctx->total_sent;
|
|
chunksize = nbytes_to_hash;
|
|
if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&
|
|
(chunksize > ctx->max_payload))
|
|
chunksize = ctx->max_payload;
|
|
|
|
/*
|
|
* If this is not a final request and the request data is not a multiple
|
|
* of a full block, then simply park the extra data and prefix it to the
|
|
* data for the next request.
|
|
*/
|
|
if (!rctx->is_final) {
|
|
u8 *dest = rctx->hash_carry + rctx->hash_carry_len;
|
|
u16 new_len; /* len of data to add to hash carry */
|
|
|
|
rem = chunksize % blocksize; /* remainder */
|
|
if (rem) {
|
|
/* chunksize not a multiple of blocksize */
|
|
chunksize -= rem;
|
|
if (chunksize == 0) {
|
|
/* Don't have a full block to submit to hw */
|
|
new_len = rem - rctx->hash_carry_len;
|
|
sg_copy_part_to_buf(req->src, dest, new_len,
|
|
rctx->src_sent);
|
|
rctx->hash_carry_len = rem;
|
|
flow_log("Exiting with hash carry len: %u\n",
|
|
rctx->hash_carry_len);
|
|
packet_dump(" buf: ",
|
|
rctx->hash_carry,
|
|
rctx->hash_carry_len);
|
|
return -EAGAIN;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* if we have hash carry, then prefix it to the data in this request */
|
|
local_nbuf = rctx->hash_carry_len;
|
|
rctx->hash_carry_len = 0;
|
|
if (local_nbuf)
|
|
tx_frag_num++;
|
|
new_data_len = chunksize - local_nbuf;
|
|
|
|
/* Count number of sg entries to be used in this request */
|
|
rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip,
|
|
new_data_len);
|
|
|
|
/* AES hashing keeps key size in type field, so need to copy it here */
|
|
if (hash_parms.alg == HASH_ALG_AES)
|
|
hash_parms.type = (enum hash_type)cipher_parms.type;
|
|
else
|
|
hash_parms.type = spu->spu_hash_type(rctx->total_sent);
|
|
|
|
digestsize = spu->spu_digest_size(ctx->digestsize, ctx->auth.alg,
|
|
hash_parms.type);
|
|
hash_parms.digestsize = digestsize;
|
|
|
|
/* update the indexes */
|
|
rctx->total_sent += chunksize;
|
|
/* if you sent a prebuf then that wasn't from this req->src */
|
|
rctx->src_sent += new_data_len;
|
|
|
|
if ((rctx->total_sent == rctx->total_todo) && rctx->is_final)
|
|
hash_parms.pad_len = spu->spu_hash_pad_len(hash_parms.alg,
|
|
hash_parms.mode,
|
|
chunksize,
|
|
blocksize);
|
|
|
|
/*
|
|
* If a non-first chunk, then include the digest returned from the
|
|
* previous chunk so that hw can add to it (except for AES types).
|
|
*/
|
|
if ((hash_parms.type == HASH_TYPE_UPDT) &&
|
|
(hash_parms.alg != HASH_ALG_AES)) {
|
|
hash_parms.key_buf = rctx->incr_hash;
|
|
hash_parms.key_len = digestsize;
|
|
}
|
|
|
|
atomic64_add(chunksize, &iproc_priv.bytes_out);
|
|
|
|
flow_log("%s() final: %u nbuf: %u ",
|
|
__func__, rctx->is_final, local_nbuf);
|
|
|
|
if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
|
|
flow_log("max_payload infinite\n");
|
|
else
|
|
flow_log("max_payload %u\n", ctx->max_payload);
|
|
|
|
flow_log("chunk_start: %u chunk_size: %u\n", chunk_start, chunksize);
|
|
|
|
/* Prepend SPU header with type 3 BCM header */
|
|
memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);
|
|
|
|
hash_parms.prebuf_len = local_nbuf;
|
|
spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr +
|
|
BCM_HDR_LEN,
|
|
&req_opts, &cipher_parms,
|
|
&hash_parms, &aead_parms,
|
|
new_data_len);
|
|
|
|
if (spu_hdr_len == 0) {
|
|
pr_err("Failed to create SPU request header\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
/*
|
|
* Determine total length of padding required. Put all padding in one
|
|
* buffer.
|
|
*/
|
|
data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, chunksize);
|
|
db_size = spu_real_db_size(0, 0, local_nbuf, new_data_len,
|
|
0, 0, hash_parms.pad_len);
|
|
if (spu->spu_tx_status_len())
|
|
stat_pad_len = spu->spu_wordalign_padlen(db_size);
|
|
if (stat_pad_len)
|
|
rx_frag_num++;
|
|
pad_len = hash_parms.pad_len + data_pad_len + stat_pad_len;
|
|
if (pad_len) {
|
|
tx_frag_num++;
|
|
spu->spu_request_pad(rctx->msg_buf.spu_req_pad, data_pad_len,
|
|
hash_parms.pad_len, ctx->auth.alg,
|
|
ctx->auth.mode, rctx->total_sent,
|
|
stat_pad_len);
|
|
}
|
|
|
|
spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
|
|
spu_hdr_len);
|
|
packet_dump(" prebuf: ", rctx->hash_carry, local_nbuf);
|
|
flow_log("Data:\n");
|
|
dump_sg(rctx->src_sg, rctx->src_skip, new_data_len);
|
|
packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len);
|
|
|
|
/*
|
|
* Build mailbox message containing SPU request msg and rx buffers
|
|
* to catch response message
|
|
*/
|
|
memset(mssg, 0, sizeof(*mssg));
|
|
mssg->type = BRCM_MESSAGE_SPU;
|
|
mssg->ctx = rctx; /* Will be returned in response */
|
|
|
|
/* Create rx scatterlist to catch result */
|
|
err = spu_ahash_rx_sg_create(mssg, rctx, rx_frag_num, digestsize,
|
|
stat_pad_len);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Create tx scatterlist containing SPU request message */
|
|
tx_frag_num += rctx->src_nents;
|
|
if (spu->spu_tx_status_len())
|
|
tx_frag_num++;
|
|
err = spu_ahash_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len,
|
|
local_nbuf, new_data_len, pad_len);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
|
|
if (unlikely(err < 0))
|
|
return err;
|
|
|
|
return -EINPROGRESS;
|
|
}
|
|
|
|
/**
|
|
* spu_hmac_outer_hash() - Request synchonous software compute of the outer hash
|
|
* for an HMAC request.
|
|
* @req: The HMAC request from the crypto API
|
|
* @ctx: The session context
|
|
*
|
|
* Return: 0 if synchronous hash operation successful
|
|
* -EINVAL if the hash algo is unrecognized
|
|
* any other value indicates an error
|
|
*/
|
|
static int spu_hmac_outer_hash(struct ahash_request *req,
|
|
struct iproc_ctx_s *ctx)
|
|
{
|
|
struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
|
|
unsigned int blocksize =
|
|
crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
|
|
int rc;
|
|
|
|
switch (ctx->auth.alg) {
|
|
case HASH_ALG_MD5:
|
|
rc = do_shash("md5", req->result, ctx->opad, blocksize,
|
|
req->result, ctx->digestsize, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA1:
|
|
rc = do_shash("sha1", req->result, ctx->opad, blocksize,
|
|
req->result, ctx->digestsize, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA224:
|
|
rc = do_shash("sha224", req->result, ctx->opad, blocksize,
|
|
req->result, ctx->digestsize, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA256:
|
|
rc = do_shash("sha256", req->result, ctx->opad, blocksize,
|
|
req->result, ctx->digestsize, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA384:
|
|
rc = do_shash("sha384", req->result, ctx->opad, blocksize,
|
|
req->result, ctx->digestsize, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA512:
|
|
rc = do_shash("sha512", req->result, ctx->opad, blocksize,
|
|
req->result, ctx->digestsize, NULL, 0);
|
|
break;
|
|
default:
|
|
pr_err("%s() Error : unknown hmac type\n", __func__);
|
|
rc = -EINVAL;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* ahash_req_done() - Process a hash result from the SPU hardware.
|
|
* @rctx: Crypto request context
|
|
*
|
|
* Return: 0 if successful
|
|
* < 0 if an error
|
|
*/
|
|
static int ahash_req_done(struct iproc_reqctx_s *rctx)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct crypto_async_request *areq = rctx->parent;
|
|
struct ahash_request *req = ahash_request_cast(areq);
|
|
struct iproc_ctx_s *ctx = rctx->ctx;
|
|
int err;
|
|
|
|
memcpy(req->result, rctx->msg_buf.digest, ctx->digestsize);
|
|
|
|
if (spu->spu_type == SPU_TYPE_SPUM) {
|
|
/* byte swap the output from the UPDT function to network byte
|
|
* order
|
|
*/
|
|
if (ctx->auth.alg == HASH_ALG_MD5) {
|
|
__swab32s((u32 *)req->result);
|
|
__swab32s(((u32 *)req->result) + 1);
|
|
__swab32s(((u32 *)req->result) + 2);
|
|
__swab32s(((u32 *)req->result) + 3);
|
|
__swab32s(((u32 *)req->result) + 4);
|
|
}
|
|
}
|
|
|
|
flow_dump(" digest ", req->result, ctx->digestsize);
|
|
|
|
/* if this an HMAC then do the outer hash */
|
|
if (rctx->is_sw_hmac) {
|
|
err = spu_hmac_outer_hash(req, ctx);
|
|
if (err < 0)
|
|
return err;
|
|
flow_dump(" hmac: ", req->result, ctx->digestsize);
|
|
}
|
|
|
|
if (rctx->is_sw_hmac || ctx->auth.mode == HASH_MODE_HMAC) {
|
|
atomic_inc(&iproc_priv.op_counts[SPU_OP_HMAC]);
|
|
atomic_inc(&iproc_priv.hmac_cnt[ctx->auth.alg]);
|
|
} else {
|
|
atomic_inc(&iproc_priv.op_counts[SPU_OP_HASH]);
|
|
atomic_inc(&iproc_priv.hash_cnt[ctx->auth.alg]);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* handle_ahash_resp() - Process a SPU response message for a hash request.
|
|
* Checks if the entire crypto API request has been processed, and if so,
|
|
* invokes post processing on the result.
|
|
* @rctx: Crypto request context
|
|
*/
|
|
static void handle_ahash_resp(struct iproc_reqctx_s *rctx)
|
|
{
|
|
struct iproc_ctx_s *ctx = rctx->ctx;
|
|
#ifdef DEBUG
|
|
struct crypto_async_request *areq = rctx->parent;
|
|
struct ahash_request *req = ahash_request_cast(areq);
|
|
struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
|
|
unsigned int blocksize =
|
|
crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
|
|
#endif
|
|
/*
|
|
* Save hash to use as input to next op if incremental. Might be copying
|
|
* too much, but that's easier than figuring out actual digest size here
|
|
*/
|
|
memcpy(rctx->incr_hash, rctx->msg_buf.digest, MAX_DIGEST_SIZE);
|
|
|
|
flow_log("%s() blocksize:%u digestsize:%u\n",
|
|
__func__, blocksize, ctx->digestsize);
|
|
|
|
atomic64_add(ctx->digestsize, &iproc_priv.bytes_in);
|
|
|
|
if (rctx->is_final && (rctx->total_sent == rctx->total_todo))
|
|
ahash_req_done(rctx);
|
|
}
|
|
|
|
/**
|
|
* spu_aead_rx_sg_create() - Build up the scatterlist of buffers used to receive
|
|
* a SPU response message for an AEAD request. Includes buffers to catch SPU
|
|
* message headers and the response data.
|
|
* @mssg: mailbox message containing the receive sg
|
|
* @rctx: crypto request context
|
|
* @rx_frag_num: number of scatterlist elements required to hold the
|
|
* SPU response message
|
|
* @assoc_len: Length of associated data included in the crypto request
|
|
* @ret_iv_len: Length of IV returned in response
|
|
* @resp_len: Number of bytes of response data expected to be written to
|
|
* dst buffer from crypto API
|
|
* @digestsize: Length of hash digest, in bytes
|
|
* @stat_pad_len: Number of bytes required to pad the STAT field to
|
|
* a 4-byte boundary
|
|
*
|
|
* The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
|
|
* when the request completes, whether the request is handled successfully or
|
|
* there is an error.
|
|
*
|
|
* Returns:
|
|
* 0 if successful
|
|
* < 0 if an error
|
|
*/
|
|
static int spu_aead_rx_sg_create(struct brcm_message *mssg,
|
|
struct aead_request *req,
|
|
struct iproc_reqctx_s *rctx,
|
|
u8 rx_frag_num,
|
|
unsigned int assoc_len,
|
|
u32 ret_iv_len, unsigned int resp_len,
|
|
unsigned int digestsize, u32 stat_pad_len)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct scatterlist *sg; /* used to build sgs in mbox message */
|
|
struct iproc_ctx_s *ctx = rctx->ctx;
|
|
u32 datalen; /* Number of bytes of response data expected */
|
|
u32 assoc_buf_len;
|
|
u8 data_padlen = 0;
|
|
|
|
if (ctx->is_rfc4543) {
|
|
/* RFC4543: only pad after data, not after AAD */
|
|
data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
|
|
assoc_len + resp_len);
|
|
assoc_buf_len = assoc_len;
|
|
} else {
|
|
data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
|
|
resp_len);
|
|
assoc_buf_len = spu->spu_assoc_resp_len(ctx->cipher.mode,
|
|
assoc_len, ret_iv_len,
|
|
rctx->is_encrypt);
|
|
}
|
|
|
|
if (ctx->cipher.mode == CIPHER_MODE_CCM)
|
|
/* ICV (after data) must be in the next 32-bit word for CCM */
|
|
data_padlen += spu->spu_wordalign_padlen(assoc_buf_len +
|
|
resp_len +
|
|
data_padlen);
|
|
|
|
if (data_padlen)
|
|
/* have to catch gcm pad in separate buffer */
|
|
rx_frag_num++;
|
|
|
|
mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),
|
|
rctx->gfp);
|
|
if (!mssg->spu.dst)
|
|
return -ENOMEM;
|
|
|
|
sg = mssg->spu.dst;
|
|
sg_init_table(sg, rx_frag_num);
|
|
|
|
/* Space for SPU message header */
|
|
sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);
|
|
|
|
if (assoc_buf_len) {
|
|
/*
|
|
* Don't write directly to req->dst, because SPU may pad the
|
|
* assoc data in the response
|
|
*/
|
|
memset(rctx->msg_buf.a.resp_aad, 0, assoc_buf_len);
|
|
sg_set_buf(sg++, rctx->msg_buf.a.resp_aad, assoc_buf_len);
|
|
}
|
|
|
|
if (resp_len) {
|
|
/*
|
|
* Copy in each dst sg entry from request, up to chunksize.
|
|
* dst sg catches just the data. digest caught in separate buf.
|
|
*/
|
|
datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip,
|
|
rctx->dst_nents, resp_len);
|
|
if (datalen < (resp_len)) {
|
|
pr_err("%s(): failed to copy dst sg to mbox msg. expected len %u, datalen %u",
|
|
__func__, resp_len, datalen);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
|
|
/* If GCM/CCM data is padded, catch padding in separate buffer */
|
|
if (data_padlen) {
|
|
memset(rctx->msg_buf.a.gcmpad, 0, data_padlen);
|
|
sg_set_buf(sg++, rctx->msg_buf.a.gcmpad, data_padlen);
|
|
}
|
|
|
|
/* Always catch ICV in separate buffer */
|
|
sg_set_buf(sg++, rctx->msg_buf.digest, digestsize);
|
|
|
|
flow_log("stat_pad_len %u\n", stat_pad_len);
|
|
if (stat_pad_len) {
|
|
memset(rctx->msg_buf.rx_stat_pad, 0, stat_pad_len);
|
|
sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);
|
|
}
|
|
|
|
memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);
|
|
sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* spu_aead_tx_sg_create() - Build up the scatterlist of buffers used to send a
|
|
* SPU request message for an AEAD request. Includes SPU message headers and the
|
|
* request data.
|
|
* @mssg: mailbox message containing the transmit sg
|
|
* @rctx: crypto request context
|
|
* @tx_frag_num: number of scatterlist elements required to construct the
|
|
* SPU request message
|
|
* @spu_hdr_len: length of SPU message header in bytes
|
|
* @assoc: crypto API associated data scatterlist
|
|
* @assoc_len: length of associated data
|
|
* @assoc_nents: number of scatterlist entries containing assoc data
|
|
* @aead_iv_len: length of AEAD IV, if included
|
|
* @chunksize: Number of bytes of request data
|
|
* @aad_pad_len: Number of bytes of padding at end of AAD. For GCM/CCM.
|
|
* @pad_len: Number of pad bytes
|
|
* @incl_icv: If true, write separate ICV buffer after data and
|
|
* any padding
|
|
*
|
|
* The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
|
|
* when the request completes, whether the request is handled successfully or
|
|
* there is an error.
|
|
*
|
|
* Return:
|
|
* 0 if successful
|
|
* < 0 if an error
|
|
*/
|
|
static int spu_aead_tx_sg_create(struct brcm_message *mssg,
|
|
struct iproc_reqctx_s *rctx,
|
|
u8 tx_frag_num,
|
|
u32 spu_hdr_len,
|
|
struct scatterlist *assoc,
|
|
unsigned int assoc_len,
|
|
int assoc_nents,
|
|
unsigned int aead_iv_len,
|
|
unsigned int chunksize,
|
|
u32 aad_pad_len, u32 pad_len, bool incl_icv)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct scatterlist *sg; /* used to build sgs in mbox message */
|
|
struct scatterlist *assoc_sg = assoc;
|
|
struct iproc_ctx_s *ctx = rctx->ctx;
|
|
u32 datalen; /* Number of bytes of data to write */
|
|
u32 written; /* Number of bytes of data written */
|
|
u32 assoc_offset = 0;
|
|
u32 stat_len;
|
|
|
|
mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),
|
|
rctx->gfp);
|
|
if (!mssg->spu.src)
|
|
return -ENOMEM;
|
|
|
|
sg = mssg->spu.src;
|
|
sg_init_table(sg, tx_frag_num);
|
|
|
|
sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,
|
|
BCM_HDR_LEN + spu_hdr_len);
|
|
|
|
if (assoc_len) {
|
|
/* Copy in each associated data sg entry from request */
|
|
written = spu_msg_sg_add(&sg, &assoc_sg, &assoc_offset,
|
|
assoc_nents, assoc_len);
|
|
if (written < assoc_len) {
|
|
pr_err("%s(): failed to copy assoc sg to mbox msg",
|
|
__func__);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
|
|
if (aead_iv_len)
|
|
sg_set_buf(sg++, rctx->msg_buf.iv_ctr, aead_iv_len);
|
|
|
|
if (aad_pad_len) {
|
|
memset(rctx->msg_buf.a.req_aad_pad, 0, aad_pad_len);
|
|
sg_set_buf(sg++, rctx->msg_buf.a.req_aad_pad, aad_pad_len);
|
|
}
|
|
|
|
datalen = chunksize;
|
|
if ((chunksize > ctx->digestsize) && incl_icv)
|
|
datalen -= ctx->digestsize;
|
|
if (datalen) {
|
|
/* For aead, a single msg should consume the entire src sg */
|
|
written = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,
|
|
rctx->src_nents, datalen);
|
|
if (written < datalen) {
|
|
pr_err("%s(): failed to copy src sg to mbox msg",
|
|
__func__);
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
|
|
if (pad_len) {
|
|
memset(rctx->msg_buf.spu_req_pad, 0, pad_len);
|
|
sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);
|
|
}
|
|
|
|
if (incl_icv)
|
|
sg_set_buf(sg++, rctx->msg_buf.digest, ctx->digestsize);
|
|
|
|
stat_len = spu->spu_tx_status_len();
|
|
if (stat_len) {
|
|
memset(rctx->msg_buf.tx_stat, 0, stat_len);
|
|
sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* handle_aead_req() - Submit a SPU request message for the next chunk of the
|
|
* current AEAD request.
|
|
* @rctx: Crypto request context
|
|
*
|
|
* Unlike other operation types, we assume the length of the request fits in
|
|
* a single SPU request message. aead_enqueue() makes sure this is true.
|
|
* Comments for other op types regarding threads applies here as well.
|
|
*
|
|
* Unlike incremental hash ops, where the spu returns the entire hash for
|
|
* truncated algs like sha-224, the SPU returns just the truncated hash in
|
|
* response to aead requests. So digestsize is always ctx->digestsize here.
|
|
*
|
|
* Return: -EINPROGRESS: crypto request has been accepted and result will be
|
|
* returned asynchronously
|
|
* Any other value indicates an error
|
|
*/
|
|
static int handle_aead_req(struct iproc_reqctx_s *rctx)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct crypto_async_request *areq = rctx->parent;
|
|
struct aead_request *req = container_of(areq,
|
|
struct aead_request, base);
|
|
struct iproc_ctx_s *ctx = rctx->ctx;
|
|
int err;
|
|
unsigned int chunksize;
|
|
unsigned int resp_len;
|
|
u32 spu_hdr_len;
|
|
u32 db_size;
|
|
u32 stat_pad_len;
|
|
u32 pad_len;
|
|
struct brcm_message *mssg; /* mailbox message */
|
|
struct spu_request_opts req_opts;
|
|
struct spu_cipher_parms cipher_parms;
|
|
struct spu_hash_parms hash_parms;
|
|
struct spu_aead_parms aead_parms;
|
|
int assoc_nents = 0;
|
|
bool incl_icv = false;
|
|
unsigned int digestsize = ctx->digestsize;
|
|
|
|
/* number of entries in src and dst sg. Always includes SPU msg header.
|
|
*/
|
|
u8 rx_frag_num = 2; /* and STATUS */
|
|
u8 tx_frag_num = 1;
|
|
|
|
/* doing the whole thing at once */
|
|
chunksize = rctx->total_todo;
|
|
|
|
flow_log("%s: chunksize %u\n", __func__, chunksize);
|
|
|
|
memset(&req_opts, 0, sizeof(req_opts));
|
|
memset(&hash_parms, 0, sizeof(hash_parms));
|
|
memset(&aead_parms, 0, sizeof(aead_parms));
|
|
|
|
req_opts.is_inbound = !(rctx->is_encrypt);
|
|
req_opts.auth_first = ctx->auth_first;
|
|
req_opts.is_aead = true;
|
|
req_opts.is_esp = ctx->is_esp;
|
|
|
|
cipher_parms.alg = ctx->cipher.alg;
|
|
cipher_parms.mode = ctx->cipher.mode;
|
|
cipher_parms.type = ctx->cipher_type;
|
|
cipher_parms.key_buf = ctx->enckey;
|
|
cipher_parms.key_len = ctx->enckeylen;
|
|
cipher_parms.iv_buf = rctx->msg_buf.iv_ctr;
|
|
cipher_parms.iv_len = rctx->iv_ctr_len;
|
|
|
|
hash_parms.alg = ctx->auth.alg;
|
|
hash_parms.mode = ctx->auth.mode;
|
|
hash_parms.type = HASH_TYPE_NONE;
|
|
hash_parms.key_buf = (u8 *)ctx->authkey;
|
|
hash_parms.key_len = ctx->authkeylen;
|
|
hash_parms.digestsize = digestsize;
|
|
|
|
if ((ctx->auth.alg == HASH_ALG_SHA224) &&
|
|
(ctx->authkeylen < SHA224_DIGEST_SIZE))
|
|
hash_parms.key_len = SHA224_DIGEST_SIZE;
|
|
|
|
aead_parms.assoc_size = req->assoclen;
|
|
if (ctx->is_esp && !ctx->is_rfc4543) {
|
|
/*
|
|
* 8-byte IV is included assoc data in request. SPU2
|
|
* expects AAD to include just SPI and seqno. So
|
|
* subtract off the IV len.
|
|
*/
|
|
aead_parms.assoc_size -= GCM_RFC4106_IV_SIZE;
|
|
|
|
if (rctx->is_encrypt) {
|
|
aead_parms.return_iv = true;
|
|
aead_parms.ret_iv_len = GCM_RFC4106_IV_SIZE;
|
|
aead_parms.ret_iv_off = GCM_ESP_SALT_SIZE;
|
|
}
|
|
} else {
|
|
aead_parms.ret_iv_len = 0;
|
|
}
|
|
|
|
/*
|
|
* Count number of sg entries from the crypto API request that are to
|
|
* be included in this mailbox message. For dst sg, don't count space
|
|
* for digest. Digest gets caught in a separate buffer and copied back
|
|
* to dst sg when processing response.
|
|
*/
|
|
rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize);
|
|
rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize);
|
|
if (aead_parms.assoc_size)
|
|
assoc_nents = spu_sg_count(rctx->assoc, 0,
|
|
aead_parms.assoc_size);
|
|
|
|
mssg = &rctx->mb_mssg;
|
|
|
|
rctx->total_sent = chunksize;
|
|
rctx->src_sent = chunksize;
|
|
if (spu->spu_assoc_resp_len(ctx->cipher.mode,
|
|
aead_parms.assoc_size,
|
|
aead_parms.ret_iv_len,
|
|
rctx->is_encrypt))
|
|
rx_frag_num++;
|
|
|
|
aead_parms.iv_len = spu->spu_aead_ivlen(ctx->cipher.mode,
|
|
rctx->iv_ctr_len);
|
|
|
|
if (ctx->auth.alg == HASH_ALG_AES)
|
|
hash_parms.type = (enum hash_type)ctx->cipher_type;
|
|
|
|
/* General case AAD padding (CCM and RFC4543 special cases below) */
|
|
aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
|
|
aead_parms.assoc_size);
|
|
|
|
/* General case data padding (CCM decrypt special case below) */
|
|
aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
|
|
chunksize);
|
|
|
|
if (ctx->cipher.mode == CIPHER_MODE_CCM) {
|
|
/*
|
|
* for CCM, AAD len + 2 (rather than AAD len) needs to be
|
|
* 128-bit aligned
|
|
*/
|
|
aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(
|
|
ctx->cipher.mode,
|
|
aead_parms.assoc_size + 2);
|
|
|
|
/*
|
|
* And when decrypting CCM, need to pad without including
|
|
* size of ICV which is tacked on to end of chunk
|
|
*/
|
|
if (!rctx->is_encrypt)
|
|
aead_parms.data_pad_len =
|
|
spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
|
|
chunksize - digestsize);
|
|
|
|
/* CCM also requires software to rewrite portions of IV: */
|
|
spu->spu_ccm_update_iv(digestsize, &cipher_parms, req->assoclen,
|
|
chunksize, rctx->is_encrypt,
|
|
ctx->is_esp);
|
|
}
|
|
|
|
if (ctx->is_rfc4543) {
|
|
/*
|
|
* RFC4543: data is included in AAD, so don't pad after AAD
|
|
* and pad data based on both AAD + data size
|
|
*/
|
|
aead_parms.aad_pad_len = 0;
|
|
if (!rctx->is_encrypt)
|
|
aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(
|
|
ctx->cipher.mode,
|
|
aead_parms.assoc_size + chunksize -
|
|
digestsize);
|
|
else
|
|
aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(
|
|
ctx->cipher.mode,
|
|
aead_parms.assoc_size + chunksize);
|
|
|
|
req_opts.is_rfc4543 = true;
|
|
}
|
|
|
|
if (spu_req_incl_icv(ctx->cipher.mode, rctx->is_encrypt)) {
|
|
incl_icv = true;
|
|
tx_frag_num++;
|
|
/* Copy ICV from end of src scatterlist to digest buf */
|
|
sg_copy_part_to_buf(req->src, rctx->msg_buf.digest, digestsize,
|
|
req->assoclen + rctx->total_sent -
|
|
digestsize);
|
|
}
|
|
|
|
atomic64_add(chunksize, &iproc_priv.bytes_out);
|
|
|
|
flow_log("%s()-sent chunksize:%u\n", __func__, chunksize);
|
|
|
|
/* Prepend SPU header with type 3 BCM header */
|
|
memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);
|
|
|
|
spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr +
|
|
BCM_HDR_LEN, &req_opts,
|
|
&cipher_parms, &hash_parms,
|
|
&aead_parms, chunksize);
|
|
|
|
/* Determine total length of padding. Put all padding in one buffer. */
|
|
db_size = spu_real_db_size(aead_parms.assoc_size, aead_parms.iv_len, 0,
|
|
chunksize, aead_parms.aad_pad_len,
|
|
aead_parms.data_pad_len, 0);
|
|
|
|
stat_pad_len = spu->spu_wordalign_padlen(db_size);
|
|
|
|
if (stat_pad_len)
|
|
rx_frag_num++;
|
|
pad_len = aead_parms.data_pad_len + stat_pad_len;
|
|
if (pad_len) {
|
|
tx_frag_num++;
|
|
spu->spu_request_pad(rctx->msg_buf.spu_req_pad,
|
|
aead_parms.data_pad_len, 0,
|
|
ctx->auth.alg, ctx->auth.mode,
|
|
rctx->total_sent, stat_pad_len);
|
|
}
|
|
|
|
spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
|
|
spu_hdr_len);
|
|
dump_sg(rctx->assoc, 0, aead_parms.assoc_size);
|
|
packet_dump(" aead iv: ", rctx->msg_buf.iv_ctr, aead_parms.iv_len);
|
|
packet_log("BD:\n");
|
|
dump_sg(rctx->src_sg, rctx->src_skip, chunksize);
|
|
packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len);
|
|
|
|
/*
|
|
* Build mailbox message containing SPU request msg and rx buffers
|
|
* to catch response message
|
|
*/
|
|
memset(mssg, 0, sizeof(*mssg));
|
|
mssg->type = BRCM_MESSAGE_SPU;
|
|
mssg->ctx = rctx; /* Will be returned in response */
|
|
|
|
/* Create rx scatterlist to catch result */
|
|
rx_frag_num += rctx->dst_nents;
|
|
resp_len = chunksize;
|
|
|
|
/*
|
|
* Always catch ICV in separate buffer. Have to for GCM/CCM because of
|
|
* padding. Have to for SHA-224 and other truncated SHAs because SPU
|
|
* sends entire digest back.
|
|
*/
|
|
rx_frag_num++;
|
|
|
|
if (((ctx->cipher.mode == CIPHER_MODE_GCM) ||
|
|
(ctx->cipher.mode == CIPHER_MODE_CCM)) && !rctx->is_encrypt) {
|
|
/*
|
|
* Input is ciphertxt plus ICV, but ICV not incl
|
|
* in output.
|
|
*/
|
|
resp_len -= ctx->digestsize;
|
|
if (resp_len == 0)
|
|
/* no rx frags to catch output data */
|
|
rx_frag_num -= rctx->dst_nents;
|
|
}
|
|
|
|
err = spu_aead_rx_sg_create(mssg, req, rctx, rx_frag_num,
|
|
aead_parms.assoc_size,
|
|
aead_parms.ret_iv_len, resp_len, digestsize,
|
|
stat_pad_len);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Create tx scatterlist containing SPU request message */
|
|
tx_frag_num += rctx->src_nents;
|
|
tx_frag_num += assoc_nents;
|
|
if (aead_parms.aad_pad_len)
|
|
tx_frag_num++;
|
|
if (aead_parms.iv_len)
|
|
tx_frag_num++;
|
|
if (spu->spu_tx_status_len())
|
|
tx_frag_num++;
|
|
err = spu_aead_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len,
|
|
rctx->assoc, aead_parms.assoc_size,
|
|
assoc_nents, aead_parms.iv_len, chunksize,
|
|
aead_parms.aad_pad_len, pad_len, incl_icv);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
|
|
if (unlikely(err < 0))
|
|
return err;
|
|
|
|
return -EINPROGRESS;
|
|
}
|
|
|
|
/**
|
|
* handle_aead_resp() - Process a SPU response message for an AEAD request.
|
|
* @rctx: Crypto request context
|
|
*/
|
|
static void handle_aead_resp(struct iproc_reqctx_s *rctx)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct crypto_async_request *areq = rctx->parent;
|
|
struct aead_request *req = container_of(areq,
|
|
struct aead_request, base);
|
|
struct iproc_ctx_s *ctx = rctx->ctx;
|
|
u32 payload_len;
|
|
unsigned int icv_offset;
|
|
u32 result_len;
|
|
|
|
/* See how much data was returned */
|
|
payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr);
|
|
flow_log("payload_len %u\n", payload_len);
|
|
|
|
/* only count payload */
|
|
atomic64_add(payload_len, &iproc_priv.bytes_in);
|
|
|
|
if (req->assoclen)
|
|
packet_dump(" assoc_data ", rctx->msg_buf.a.resp_aad,
|
|
req->assoclen);
|
|
|
|
/*
|
|
* Copy the ICV back to the destination
|
|
* buffer. In decrypt case, SPU gives us back the digest, but crypto
|
|
* API doesn't expect ICV in dst buffer.
|
|
*/
|
|
result_len = req->cryptlen;
|
|
if (rctx->is_encrypt) {
|
|
icv_offset = req->assoclen + rctx->total_sent;
|
|
packet_dump(" ICV: ", rctx->msg_buf.digest, ctx->digestsize);
|
|
flow_log("copying ICV to dst sg at offset %u\n", icv_offset);
|
|
sg_copy_part_from_buf(req->dst, rctx->msg_buf.digest,
|
|
ctx->digestsize, icv_offset);
|
|
result_len += ctx->digestsize;
|
|
}
|
|
|
|
packet_log("response data: ");
|
|
dump_sg(req->dst, req->assoclen, result_len);
|
|
|
|
atomic_inc(&iproc_priv.op_counts[SPU_OP_AEAD]);
|
|
if (ctx->cipher.alg == CIPHER_ALG_AES) {
|
|
if (ctx->cipher.mode == CIPHER_MODE_CCM)
|
|
atomic_inc(&iproc_priv.aead_cnt[AES_CCM]);
|
|
else if (ctx->cipher.mode == CIPHER_MODE_GCM)
|
|
atomic_inc(&iproc_priv.aead_cnt[AES_GCM]);
|
|
else
|
|
atomic_inc(&iproc_priv.aead_cnt[AUTHENC]);
|
|
} else {
|
|
atomic_inc(&iproc_priv.aead_cnt[AUTHENC]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* spu_chunk_cleanup() - Do cleanup after processing one chunk of a request
|
|
* @rctx: request context
|
|
*
|
|
* Mailbox scatterlists are allocated for each chunk. So free them after
|
|
* processing each chunk.
|
|
*/
|
|
static void spu_chunk_cleanup(struct iproc_reqctx_s *rctx)
|
|
{
|
|
/* mailbox message used to tx request */
|
|
struct brcm_message *mssg = &rctx->mb_mssg;
|
|
|
|
kfree(mssg->spu.src);
|
|
kfree(mssg->spu.dst);
|
|
memset(mssg, 0, sizeof(struct brcm_message));
|
|
}
|
|
|
|
/**
|
|
* finish_req() - Used to invoke the complete callback from the requester when
|
|
* a request has been handled asynchronously.
|
|
* @rctx: Request context
|
|
* @err: Indicates whether the request was successful or not
|
|
*
|
|
* Ensures that cleanup has been done for request
|
|
*/
|
|
static void finish_req(struct iproc_reqctx_s *rctx, int err)
|
|
{
|
|
struct crypto_async_request *areq = rctx->parent;
|
|
|
|
flow_log("%s() err:%d\n\n", __func__, err);
|
|
|
|
/* No harm done if already called */
|
|
spu_chunk_cleanup(rctx);
|
|
|
|
if (areq)
|
|
areq->complete(areq, err);
|
|
}
|
|
|
|
/**
|
|
* spu_rx_callback() - Callback from mailbox framework with a SPU response.
|
|
* @cl: mailbox client structure for SPU driver
|
|
* @msg: mailbox message containing SPU response
|
|
*/
|
|
static void spu_rx_callback(struct mbox_client *cl, void *msg)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct brcm_message *mssg = msg;
|
|
struct iproc_reqctx_s *rctx;
|
|
struct iproc_ctx_s *ctx;
|
|
struct crypto_async_request *areq;
|
|
int err = 0;
|
|
|
|
rctx = mssg->ctx;
|
|
if (unlikely(!rctx)) {
|
|
/* This is fatal */
|
|
pr_err("%s(): no request context", __func__);
|
|
err = -EFAULT;
|
|
goto cb_finish;
|
|
}
|
|
areq = rctx->parent;
|
|
ctx = rctx->ctx;
|
|
|
|
/* process the SPU status */
|
|
err = spu->spu_status_process(rctx->msg_buf.rx_stat);
|
|
if (err != 0) {
|
|
if (err == SPU_INVALID_ICV)
|
|
atomic_inc(&iproc_priv.bad_icv);
|
|
err = -EBADMSG;
|
|
goto cb_finish;
|
|
}
|
|
|
|
/* Process the SPU response message */
|
|
switch (rctx->ctx->alg->type) {
|
|
case CRYPTO_ALG_TYPE_ABLKCIPHER:
|
|
handle_ablkcipher_resp(rctx);
|
|
break;
|
|
case CRYPTO_ALG_TYPE_AHASH:
|
|
handle_ahash_resp(rctx);
|
|
break;
|
|
case CRYPTO_ALG_TYPE_AEAD:
|
|
handle_aead_resp(rctx);
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
goto cb_finish;
|
|
}
|
|
|
|
/*
|
|
* If this response does not complete the request, then send the next
|
|
* request chunk.
|
|
*/
|
|
if (rctx->total_sent < rctx->total_todo) {
|
|
/* Deallocate anything specific to previous chunk */
|
|
spu_chunk_cleanup(rctx);
|
|
|
|
switch (rctx->ctx->alg->type) {
|
|
case CRYPTO_ALG_TYPE_ABLKCIPHER:
|
|
err = handle_ablkcipher_req(rctx);
|
|
break;
|
|
case CRYPTO_ALG_TYPE_AHASH:
|
|
err = handle_ahash_req(rctx);
|
|
if (err == -EAGAIN)
|
|
/*
|
|
* we saved data in hash carry, but tell crypto
|
|
* API we successfully completed request.
|
|
*/
|
|
err = 0;
|
|
break;
|
|
case CRYPTO_ALG_TYPE_AEAD:
|
|
err = handle_aead_req(rctx);
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
}
|
|
|
|
if (err == -EINPROGRESS)
|
|
/* Successfully submitted request for next chunk */
|
|
return;
|
|
}
|
|
|
|
cb_finish:
|
|
finish_req(rctx, err);
|
|
}
|
|
|
|
/* ==================== Kernel Cryptographic API ==================== */
|
|
|
|
/**
|
|
* ablkcipher_enqueue() - Handle ablkcipher encrypt or decrypt request.
|
|
* @req: Crypto API request
|
|
* @encrypt: true if encrypting; false if decrypting
|
|
*
|
|
* Return: -EINPROGRESS if request accepted and result will be returned
|
|
* asynchronously
|
|
* < 0 if an error
|
|
*/
|
|
static int ablkcipher_enqueue(struct ablkcipher_request *req, bool encrypt)
|
|
{
|
|
struct iproc_reqctx_s *rctx = ablkcipher_request_ctx(req);
|
|
struct iproc_ctx_s *ctx =
|
|
crypto_ablkcipher_ctx(crypto_ablkcipher_reqtfm(req));
|
|
int err;
|
|
|
|
flow_log("%s() enc:%u\n", __func__, encrypt);
|
|
|
|
rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
|
|
CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
|
|
rctx->parent = &req->base;
|
|
rctx->is_encrypt = encrypt;
|
|
rctx->bd_suppress = false;
|
|
rctx->total_todo = req->nbytes;
|
|
rctx->src_sent = 0;
|
|
rctx->total_sent = 0;
|
|
rctx->total_received = 0;
|
|
rctx->ctx = ctx;
|
|
|
|
/* Initialize current position in src and dst scatterlists */
|
|
rctx->src_sg = req->src;
|
|
rctx->src_nents = 0;
|
|
rctx->src_skip = 0;
|
|
rctx->dst_sg = req->dst;
|
|
rctx->dst_nents = 0;
|
|
rctx->dst_skip = 0;
|
|
|
|
if (ctx->cipher.mode == CIPHER_MODE_CBC ||
|
|
ctx->cipher.mode == CIPHER_MODE_CTR ||
|
|
ctx->cipher.mode == CIPHER_MODE_OFB ||
|
|
ctx->cipher.mode == CIPHER_MODE_XTS ||
|
|
ctx->cipher.mode == CIPHER_MODE_GCM ||
|
|
ctx->cipher.mode == CIPHER_MODE_CCM) {
|
|
rctx->iv_ctr_len =
|
|
crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(req));
|
|
memcpy(rctx->msg_buf.iv_ctr, req->info, rctx->iv_ctr_len);
|
|
} else {
|
|
rctx->iv_ctr_len = 0;
|
|
}
|
|
|
|
/* Choose a SPU to process this request */
|
|
rctx->chan_idx = select_channel();
|
|
err = handle_ablkcipher_req(rctx);
|
|
if (err != -EINPROGRESS)
|
|
/* synchronous result */
|
|
spu_chunk_cleanup(rctx);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int des_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher);
|
|
u32 tmp[DES_EXPKEY_WORDS];
|
|
|
|
if (keylen == DES_KEY_SIZE) {
|
|
if (des_ekey(tmp, key) == 0) {
|
|
if (crypto_ablkcipher_get_flags(cipher) &
|
|
CRYPTO_TFM_REQ_WEAK_KEY) {
|
|
u32 flags = CRYPTO_TFM_RES_WEAK_KEY;
|
|
|
|
crypto_ablkcipher_set_flags(cipher, flags);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
ctx->cipher_type = CIPHER_TYPE_DES;
|
|
} else {
|
|
crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int threedes_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher);
|
|
|
|
if (keylen == (DES_KEY_SIZE * 3)) {
|
|
const u32 *K = (const u32 *)key;
|
|
u32 flags = CRYPTO_TFM_RES_BAD_KEY_SCHED;
|
|
|
|
if (!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
|
|
!((K[2] ^ K[4]) | (K[3] ^ K[5]))) {
|
|
crypto_ablkcipher_set_flags(cipher, flags);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ctx->cipher_type = CIPHER_TYPE_3DES;
|
|
} else {
|
|
crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher);
|
|
|
|
if (ctx->cipher.mode == CIPHER_MODE_XTS)
|
|
/* XTS includes two keys of equal length */
|
|
keylen = keylen / 2;
|
|
|
|
switch (keylen) {
|
|
case AES_KEYSIZE_128:
|
|
ctx->cipher_type = CIPHER_TYPE_AES128;
|
|
break;
|
|
case AES_KEYSIZE_192:
|
|
ctx->cipher_type = CIPHER_TYPE_AES192;
|
|
break;
|
|
case AES_KEYSIZE_256:
|
|
ctx->cipher_type = CIPHER_TYPE_AES256;
|
|
break;
|
|
default:
|
|
crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
|
|
return -EINVAL;
|
|
}
|
|
WARN_ON((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&
|
|
((ctx->max_payload % AES_BLOCK_SIZE) != 0));
|
|
return 0;
|
|
}
|
|
|
|
static int rc4_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher);
|
|
int i;
|
|
|
|
ctx->enckeylen = ARC4_MAX_KEY_SIZE + ARC4_STATE_SIZE;
|
|
|
|
ctx->enckey[0] = 0x00; /* 0x00 */
|
|
ctx->enckey[1] = 0x00; /* i */
|
|
ctx->enckey[2] = 0x00; /* 0x00 */
|
|
ctx->enckey[3] = 0x00; /* j */
|
|
for (i = 0; i < ARC4_MAX_KEY_SIZE; i++)
|
|
ctx->enckey[i + ARC4_STATE_SIZE] = key[i % keylen];
|
|
|
|
ctx->cipher_type = CIPHER_TYPE_INIT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ablkcipher_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct iproc_ctx_s *ctx = crypto_ablkcipher_ctx(cipher);
|
|
struct spu_cipher_parms cipher_parms;
|
|
u32 alloc_len = 0;
|
|
int err;
|
|
|
|
flow_log("ablkcipher_setkey() keylen: %d\n", keylen);
|
|
flow_dump(" key: ", key, keylen);
|
|
|
|
switch (ctx->cipher.alg) {
|
|
case CIPHER_ALG_DES:
|
|
err = des_setkey(cipher, key, keylen);
|
|
break;
|
|
case CIPHER_ALG_3DES:
|
|
err = threedes_setkey(cipher, key, keylen);
|
|
break;
|
|
case CIPHER_ALG_AES:
|
|
err = aes_setkey(cipher, key, keylen);
|
|
break;
|
|
case CIPHER_ALG_RC4:
|
|
err = rc4_setkey(cipher, key, keylen);
|
|
break;
|
|
default:
|
|
pr_err("%s() Error: unknown cipher alg\n", __func__);
|
|
err = -EINVAL;
|
|
}
|
|
if (err)
|
|
return err;
|
|
|
|
/* RC4 already populated ctx->enkey */
|
|
if (ctx->cipher.alg != CIPHER_ALG_RC4) {
|
|
memcpy(ctx->enckey, key, keylen);
|
|
ctx->enckeylen = keylen;
|
|
}
|
|
/* SPU needs XTS keys in the reverse order the crypto API presents */
|
|
if ((ctx->cipher.alg == CIPHER_ALG_AES) &&
|
|
(ctx->cipher.mode == CIPHER_MODE_XTS)) {
|
|
unsigned int xts_keylen = keylen / 2;
|
|
|
|
memcpy(ctx->enckey, key + xts_keylen, xts_keylen);
|
|
memcpy(ctx->enckey + xts_keylen, key, xts_keylen);
|
|
}
|
|
|
|
if (spu->spu_type == SPU_TYPE_SPUM)
|
|
alloc_len = BCM_HDR_LEN + SPU_HEADER_ALLOC_LEN;
|
|
else if (spu->spu_type == SPU_TYPE_SPU2)
|
|
alloc_len = BCM_HDR_LEN + SPU2_HEADER_ALLOC_LEN;
|
|
memset(ctx->bcm_spu_req_hdr, 0, alloc_len);
|
|
cipher_parms.iv_buf = NULL;
|
|
cipher_parms.iv_len = crypto_ablkcipher_ivsize(cipher);
|
|
flow_log("%s: iv_len %u\n", __func__, cipher_parms.iv_len);
|
|
|
|
cipher_parms.alg = ctx->cipher.alg;
|
|
cipher_parms.mode = ctx->cipher.mode;
|
|
cipher_parms.type = ctx->cipher_type;
|
|
cipher_parms.key_buf = ctx->enckey;
|
|
cipher_parms.key_len = ctx->enckeylen;
|
|
|
|
/* Prepend SPU request message with BCM header */
|
|
memcpy(ctx->bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);
|
|
ctx->spu_req_hdr_len =
|
|
spu->spu_cipher_req_init(ctx->bcm_spu_req_hdr + BCM_HDR_LEN,
|
|
&cipher_parms);
|
|
|
|
ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,
|
|
ctx->enckeylen,
|
|
false);
|
|
|
|
atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_CIPHER]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ablkcipher_encrypt(struct ablkcipher_request *req)
|
|
{
|
|
flow_log("ablkcipher_encrypt() nbytes:%u\n", req->nbytes);
|
|
|
|
return ablkcipher_enqueue(req, true);
|
|
}
|
|
|
|
static int ablkcipher_decrypt(struct ablkcipher_request *req)
|
|
{
|
|
flow_log("ablkcipher_decrypt() nbytes:%u\n", req->nbytes);
|
|
return ablkcipher_enqueue(req, false);
|
|
}
|
|
|
|
static int ahash_enqueue(struct ahash_request *req)
|
|
{
|
|
struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
|
|
struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
|
|
int err = 0;
|
|
const char *alg_name;
|
|
|
|
flow_log("ahash_enqueue() nbytes:%u\n", req->nbytes);
|
|
|
|
rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
|
|
CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
|
|
rctx->parent = &req->base;
|
|
rctx->ctx = ctx;
|
|
rctx->bd_suppress = true;
|
|
memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message));
|
|
|
|
/* Initialize position in src scatterlist */
|
|
rctx->src_sg = req->src;
|
|
rctx->src_skip = 0;
|
|
rctx->src_nents = 0;
|
|
rctx->dst_sg = NULL;
|
|
rctx->dst_skip = 0;
|
|
rctx->dst_nents = 0;
|
|
|
|
/* SPU2 hardware does not compute hash of zero length data */
|
|
if ((rctx->is_final == 1) && (rctx->total_todo == 0) &&
|
|
(iproc_priv.spu.spu_type == SPU_TYPE_SPU2)) {
|
|
alg_name = crypto_tfm_alg_name(crypto_ahash_tfm(tfm));
|
|
flow_log("Doing %sfinal %s zero-len hash request in software\n",
|
|
rctx->is_final ? "" : "non-", alg_name);
|
|
err = do_shash((unsigned char *)alg_name, req->result,
|
|
NULL, 0, NULL, 0, ctx->authkey,
|
|
ctx->authkeylen);
|
|
if (err < 0)
|
|
flow_log("Hash request failed with error %d\n", err);
|
|
return err;
|
|
}
|
|
/* Choose a SPU to process this request */
|
|
rctx->chan_idx = select_channel();
|
|
|
|
err = handle_ahash_req(rctx);
|
|
if (err != -EINPROGRESS)
|
|
/* synchronous result */
|
|
spu_chunk_cleanup(rctx);
|
|
|
|
if (err == -EAGAIN)
|
|
/*
|
|
* we saved data in hash carry, but tell crypto API
|
|
* we successfully completed request.
|
|
*/
|
|
err = 0;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int __ahash_init(struct ahash_request *req)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
|
|
struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
|
|
|
|
flow_log("%s()\n", __func__);
|
|
|
|
/* Initialize the context */
|
|
rctx->hash_carry_len = 0;
|
|
rctx->is_final = 0;
|
|
|
|
rctx->total_todo = 0;
|
|
rctx->src_sent = 0;
|
|
rctx->total_sent = 0;
|
|
rctx->total_received = 0;
|
|
|
|
ctx->digestsize = crypto_ahash_digestsize(tfm);
|
|
/* If we add a hash whose digest is larger, catch it here. */
|
|
WARN_ON(ctx->digestsize > MAX_DIGEST_SIZE);
|
|
|
|
rctx->is_sw_hmac = false;
|
|
|
|
ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, 0,
|
|
true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* spu_no_incr_hash() - Determine whether incremental hashing is supported.
|
|
* @ctx: Crypto session context
|
|
*
|
|
* SPU-2 does not support incremental hashing (we'll have to revisit and
|
|
* condition based on chip revision or device tree entry if future versions do
|
|
* support incremental hash)
|
|
*
|
|
* SPU-M also doesn't support incremental hashing of AES-XCBC
|
|
*
|
|
* Return: true if incremental hashing is not supported
|
|
* false otherwise
|
|
*/
|
|
bool spu_no_incr_hash(struct iproc_ctx_s *ctx)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
|
|
if (spu->spu_type == SPU_TYPE_SPU2)
|
|
return true;
|
|
|
|
if ((ctx->auth.alg == HASH_ALG_AES) &&
|
|
(ctx->auth.mode == HASH_MODE_XCBC))
|
|
return true;
|
|
|
|
/* Otherwise, incremental hashing is supported */
|
|
return false;
|
|
}
|
|
|
|
static int ahash_init(struct ahash_request *req)
|
|
{
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
|
|
struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
|
|
const char *alg_name;
|
|
struct crypto_shash *hash;
|
|
int ret;
|
|
gfp_t gfp;
|
|
|
|
if (spu_no_incr_hash(ctx)) {
|
|
/*
|
|
* If we get an incremental hashing request and it's not
|
|
* supported by the hardware, we need to handle it in software
|
|
* by calling synchronous hash functions.
|
|
*/
|
|
alg_name = crypto_tfm_alg_name(crypto_ahash_tfm(tfm));
|
|
hash = crypto_alloc_shash(alg_name, 0, 0);
|
|
if (IS_ERR(hash)) {
|
|
ret = PTR_ERR(hash);
|
|
goto err;
|
|
}
|
|
|
|
gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
|
|
CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
|
|
ctx->shash = kmalloc(sizeof(*ctx->shash) +
|
|
crypto_shash_descsize(hash), gfp);
|
|
if (!ctx->shash) {
|
|
ret = -ENOMEM;
|
|
goto err_hash;
|
|
}
|
|
ctx->shash->tfm = hash;
|
|
ctx->shash->flags = 0;
|
|
|
|
/* Set the key using data we already have from setkey */
|
|
if (ctx->authkeylen > 0) {
|
|
ret = crypto_shash_setkey(hash, ctx->authkey,
|
|
ctx->authkeylen);
|
|
if (ret)
|
|
goto err_shash;
|
|
}
|
|
|
|
/* Initialize hash w/ this key and other params */
|
|
ret = crypto_shash_init(ctx->shash);
|
|
if (ret)
|
|
goto err_shash;
|
|
} else {
|
|
/* Otherwise call the internal function which uses SPU hw */
|
|
ret = __ahash_init(req);
|
|
}
|
|
|
|
return ret;
|
|
|
|
err_shash:
|
|
kfree(ctx->shash);
|
|
err_hash:
|
|
crypto_free_shash(hash);
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static int __ahash_update(struct ahash_request *req)
|
|
{
|
|
struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
|
|
|
|
flow_log("ahash_update() nbytes:%u\n", req->nbytes);
|
|
|
|
if (!req->nbytes)
|
|
return 0;
|
|
rctx->total_todo += req->nbytes;
|
|
rctx->src_sent = 0;
|
|
|
|
return ahash_enqueue(req);
|
|
}
|
|
|
|
static int ahash_update(struct ahash_request *req)
|
|
{
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
|
|
struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
|
|
u8 *tmpbuf;
|
|
int ret;
|
|
int nents;
|
|
gfp_t gfp;
|
|
|
|
if (spu_no_incr_hash(ctx)) {
|
|
/*
|
|
* If we get an incremental hashing request and it's not
|
|
* supported by the hardware, we need to handle it in software
|
|
* by calling synchronous hash functions.
|
|
*/
|
|
if (req->src)
|
|
nents = sg_nents(req->src);
|
|
else
|
|
return -EINVAL;
|
|
|
|
/* Copy data from req scatterlist to tmp buffer */
|
|
gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
|
|
CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
|
|
tmpbuf = kmalloc(req->nbytes, gfp);
|
|
if (!tmpbuf)
|
|
return -ENOMEM;
|
|
|
|
if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) !=
|
|
req->nbytes) {
|
|
kfree(tmpbuf);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Call synchronous update */
|
|
ret = crypto_shash_update(ctx->shash, tmpbuf, req->nbytes);
|
|
kfree(tmpbuf);
|
|
} else {
|
|
/* Otherwise call the internal function which uses SPU hw */
|
|
ret = __ahash_update(req);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __ahash_final(struct ahash_request *req)
|
|
{
|
|
struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
|
|
|
|
flow_log("ahash_final() nbytes:%u\n", req->nbytes);
|
|
|
|
rctx->is_final = 1;
|
|
|
|
return ahash_enqueue(req);
|
|
}
|
|
|
|
static int ahash_final(struct ahash_request *req)
|
|
{
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
|
|
struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
|
|
int ret;
|
|
|
|
if (spu_no_incr_hash(ctx)) {
|
|
/*
|
|
* If we get an incremental hashing request and it's not
|
|
* supported by the hardware, we need to handle it in software
|
|
* by calling synchronous hash functions.
|
|
*/
|
|
ret = crypto_shash_final(ctx->shash, req->result);
|
|
|
|
/* Done with hash, can deallocate it now */
|
|
crypto_free_shash(ctx->shash->tfm);
|
|
kfree(ctx->shash);
|
|
|
|
} else {
|
|
/* Otherwise call the internal function which uses SPU hw */
|
|
ret = __ahash_final(req);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __ahash_finup(struct ahash_request *req)
|
|
{
|
|
struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
|
|
|
|
flow_log("ahash_finup() nbytes:%u\n", req->nbytes);
|
|
|
|
rctx->total_todo += req->nbytes;
|
|
rctx->src_sent = 0;
|
|
rctx->is_final = 1;
|
|
|
|
return ahash_enqueue(req);
|
|
}
|
|
|
|
static int ahash_finup(struct ahash_request *req)
|
|
{
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
|
|
struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
|
|
u8 *tmpbuf;
|
|
int ret;
|
|
int nents;
|
|
gfp_t gfp;
|
|
|
|
if (spu_no_incr_hash(ctx)) {
|
|
/*
|
|
* If we get an incremental hashing request and it's not
|
|
* supported by the hardware, we need to handle it in software
|
|
* by calling synchronous hash functions.
|
|
*/
|
|
if (req->src) {
|
|
nents = sg_nents(req->src);
|
|
} else {
|
|
ret = -EINVAL;
|
|
goto ahash_finup_exit;
|
|
}
|
|
|
|
/* Copy data from req scatterlist to tmp buffer */
|
|
gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
|
|
CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
|
|
tmpbuf = kmalloc(req->nbytes, gfp);
|
|
if (!tmpbuf) {
|
|
ret = -ENOMEM;
|
|
goto ahash_finup_exit;
|
|
}
|
|
|
|
if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) !=
|
|
req->nbytes) {
|
|
ret = -EINVAL;
|
|
goto ahash_finup_free;
|
|
}
|
|
|
|
/* Call synchronous update */
|
|
ret = crypto_shash_finup(ctx->shash, tmpbuf, req->nbytes,
|
|
req->result);
|
|
} else {
|
|
/* Otherwise call the internal function which uses SPU hw */
|
|
return __ahash_finup(req);
|
|
}
|
|
ahash_finup_free:
|
|
kfree(tmpbuf);
|
|
|
|
ahash_finup_exit:
|
|
/* Done with hash, can deallocate it now */
|
|
crypto_free_shash(ctx->shash->tfm);
|
|
kfree(ctx->shash);
|
|
return ret;
|
|
}
|
|
|
|
static int ahash_digest(struct ahash_request *req)
|
|
{
|
|
int err = 0;
|
|
|
|
flow_log("ahash_digest() nbytes:%u\n", req->nbytes);
|
|
|
|
/* whole thing at once */
|
|
err = __ahash_init(req);
|
|
if (!err)
|
|
err = __ahash_finup(req);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int ahash_setkey(struct crypto_ahash *ahash, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash);
|
|
|
|
flow_log("%s() ahash:%p key:%p keylen:%u\n",
|
|
__func__, ahash, key, keylen);
|
|
flow_dump(" key: ", key, keylen);
|
|
|
|
if (ctx->auth.alg == HASH_ALG_AES) {
|
|
switch (keylen) {
|
|
case AES_KEYSIZE_128:
|
|
ctx->cipher_type = CIPHER_TYPE_AES128;
|
|
break;
|
|
case AES_KEYSIZE_192:
|
|
ctx->cipher_type = CIPHER_TYPE_AES192;
|
|
break;
|
|
case AES_KEYSIZE_256:
|
|
ctx->cipher_type = CIPHER_TYPE_AES256;
|
|
break;
|
|
default:
|
|
pr_err("%s() Error: Invalid key length\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
pr_err("%s() Error: unknown hash alg\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
memcpy(ctx->authkey, key, keylen);
|
|
ctx->authkeylen = keylen;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ahash_export(struct ahash_request *req, void *out)
|
|
{
|
|
const struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
|
|
struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)out;
|
|
|
|
spu_exp->total_todo = rctx->total_todo;
|
|
spu_exp->total_sent = rctx->total_sent;
|
|
spu_exp->is_sw_hmac = rctx->is_sw_hmac;
|
|
memcpy(spu_exp->hash_carry, rctx->hash_carry, sizeof(rctx->hash_carry));
|
|
spu_exp->hash_carry_len = rctx->hash_carry_len;
|
|
memcpy(spu_exp->incr_hash, rctx->incr_hash, sizeof(rctx->incr_hash));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ahash_import(struct ahash_request *req, const void *in)
|
|
{
|
|
struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
|
|
struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)in;
|
|
|
|
rctx->total_todo = spu_exp->total_todo;
|
|
rctx->total_sent = spu_exp->total_sent;
|
|
rctx->is_sw_hmac = spu_exp->is_sw_hmac;
|
|
memcpy(rctx->hash_carry, spu_exp->hash_carry, sizeof(rctx->hash_carry));
|
|
rctx->hash_carry_len = spu_exp->hash_carry_len;
|
|
memcpy(rctx->incr_hash, spu_exp->incr_hash, sizeof(rctx->incr_hash));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ahash_hmac_setkey(struct crypto_ahash *ahash, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash);
|
|
unsigned int blocksize =
|
|
crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
|
|
unsigned int digestsize = crypto_ahash_digestsize(ahash);
|
|
unsigned int index;
|
|
int rc;
|
|
|
|
flow_log("%s() ahash:%p key:%p keylen:%u blksz:%u digestsz:%u\n",
|
|
__func__, ahash, key, keylen, blocksize, digestsize);
|
|
flow_dump(" key: ", key, keylen);
|
|
|
|
if (keylen > blocksize) {
|
|
switch (ctx->auth.alg) {
|
|
case HASH_ALG_MD5:
|
|
rc = do_shash("md5", ctx->authkey, key, keylen, NULL,
|
|
0, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA1:
|
|
rc = do_shash("sha1", ctx->authkey, key, keylen, NULL,
|
|
0, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA224:
|
|
rc = do_shash("sha224", ctx->authkey, key, keylen, NULL,
|
|
0, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA256:
|
|
rc = do_shash("sha256", ctx->authkey, key, keylen, NULL,
|
|
0, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA384:
|
|
rc = do_shash("sha384", ctx->authkey, key, keylen, NULL,
|
|
0, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA512:
|
|
rc = do_shash("sha512", ctx->authkey, key, keylen, NULL,
|
|
0, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA3_224:
|
|
rc = do_shash("sha3-224", ctx->authkey, key, keylen,
|
|
NULL, 0, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA3_256:
|
|
rc = do_shash("sha3-256", ctx->authkey, key, keylen,
|
|
NULL, 0, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA3_384:
|
|
rc = do_shash("sha3-384", ctx->authkey, key, keylen,
|
|
NULL, 0, NULL, 0);
|
|
break;
|
|
case HASH_ALG_SHA3_512:
|
|
rc = do_shash("sha3-512", ctx->authkey, key, keylen,
|
|
NULL, 0, NULL, 0);
|
|
break;
|
|
default:
|
|
pr_err("%s() Error: unknown hash alg\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
if (rc < 0) {
|
|
pr_err("%s() Error %d computing shash for %s\n",
|
|
__func__, rc, hash_alg_name[ctx->auth.alg]);
|
|
return rc;
|
|
}
|
|
ctx->authkeylen = digestsize;
|
|
|
|
flow_log(" keylen > digestsize... hashed\n");
|
|
flow_dump(" newkey: ", ctx->authkey, ctx->authkeylen);
|
|
} else {
|
|
memcpy(ctx->authkey, key, keylen);
|
|
ctx->authkeylen = keylen;
|
|
}
|
|
|
|
/*
|
|
* Full HMAC operation in SPUM is not verified,
|
|
* So keeping the generation of IPAD, OPAD and
|
|
* outer hashing in software.
|
|
*/
|
|
if (iproc_priv.spu.spu_type == SPU_TYPE_SPUM) {
|
|
memcpy(ctx->ipad, ctx->authkey, ctx->authkeylen);
|
|
memset(ctx->ipad + ctx->authkeylen, 0,
|
|
blocksize - ctx->authkeylen);
|
|
ctx->authkeylen = 0;
|
|
memcpy(ctx->opad, ctx->ipad, blocksize);
|
|
|
|
for (index = 0; index < blocksize; index++) {
|
|
ctx->ipad[index] ^= HMAC_IPAD_VALUE;
|
|
ctx->opad[index] ^= HMAC_OPAD_VALUE;
|
|
}
|
|
|
|
flow_dump(" ipad: ", ctx->ipad, blocksize);
|
|
flow_dump(" opad: ", ctx->opad, blocksize);
|
|
}
|
|
ctx->digestsize = digestsize;
|
|
atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_HMAC]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ahash_hmac_init(struct ahash_request *req)
|
|
{
|
|
struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
|
|
struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
|
|
unsigned int blocksize =
|
|
crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
|
|
|
|
flow_log("ahash_hmac_init()\n");
|
|
|
|
/* init the context as a hash */
|
|
ahash_init(req);
|
|
|
|
if (!spu_no_incr_hash(ctx)) {
|
|
/* SPU-M can do incr hashing but needs sw for outer HMAC */
|
|
rctx->is_sw_hmac = true;
|
|
ctx->auth.mode = HASH_MODE_HASH;
|
|
/* start with a prepended ipad */
|
|
memcpy(rctx->hash_carry, ctx->ipad, blocksize);
|
|
rctx->hash_carry_len = blocksize;
|
|
rctx->total_todo += blocksize;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ahash_hmac_update(struct ahash_request *req)
|
|
{
|
|
flow_log("ahash_hmac_update() nbytes:%u\n", req->nbytes);
|
|
|
|
if (!req->nbytes)
|
|
return 0;
|
|
|
|
return ahash_update(req);
|
|
}
|
|
|
|
static int ahash_hmac_final(struct ahash_request *req)
|
|
{
|
|
flow_log("ahash_hmac_final() nbytes:%u\n", req->nbytes);
|
|
|
|
return ahash_final(req);
|
|
}
|
|
|
|
static int ahash_hmac_finup(struct ahash_request *req)
|
|
{
|
|
flow_log("ahash_hmac_finupl() nbytes:%u\n", req->nbytes);
|
|
|
|
return ahash_finup(req);
|
|
}
|
|
|
|
static int ahash_hmac_digest(struct ahash_request *req)
|
|
{
|
|
struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
|
|
struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
|
|
unsigned int blocksize =
|
|
crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
|
|
|
|
flow_log("ahash_hmac_digest() nbytes:%u\n", req->nbytes);
|
|
|
|
/* Perform initialization and then call finup */
|
|
__ahash_init(req);
|
|
|
|
if (iproc_priv.spu.spu_type == SPU_TYPE_SPU2) {
|
|
/*
|
|
* SPU2 supports full HMAC implementation in the
|
|
* hardware, need not to generate IPAD, OPAD and
|
|
* outer hash in software.
|
|
* Only for hash key len > hash block size, SPU2
|
|
* expects to perform hashing on the key, shorten
|
|
* it to digest size and feed it as hash key.
|
|
*/
|
|
rctx->is_sw_hmac = false;
|
|
ctx->auth.mode = HASH_MODE_HMAC;
|
|
} else {
|
|
rctx->is_sw_hmac = true;
|
|
ctx->auth.mode = HASH_MODE_HASH;
|
|
/* start with a prepended ipad */
|
|
memcpy(rctx->hash_carry, ctx->ipad, blocksize);
|
|
rctx->hash_carry_len = blocksize;
|
|
rctx->total_todo += blocksize;
|
|
}
|
|
|
|
return __ahash_finup(req);
|
|
}
|
|
|
|
/* aead helpers */
|
|
|
|
static int aead_need_fallback(struct aead_request *req)
|
|
{
|
|
struct iproc_reqctx_s *rctx = aead_request_ctx(req);
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
|
struct iproc_ctx_s *ctx = crypto_aead_ctx(aead);
|
|
u32 payload_len;
|
|
|
|
/*
|
|
* SPU hardware cannot handle the AES-GCM/CCM case where plaintext
|
|
* and AAD are both 0 bytes long. So use fallback in this case.
|
|
*/
|
|
if (((ctx->cipher.mode == CIPHER_MODE_GCM) ||
|
|
(ctx->cipher.mode == CIPHER_MODE_CCM)) &&
|
|
(req->assoclen == 0)) {
|
|
if ((rctx->is_encrypt && (req->cryptlen == 0)) ||
|
|
(!rctx->is_encrypt && (req->cryptlen == ctx->digestsize))) {
|
|
flow_log("AES GCM/CCM needs fallback for 0 len req\n");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* SPU-M hardware only supports CCM digest size of 8, 12, or 16 bytes */
|
|
if ((ctx->cipher.mode == CIPHER_MODE_CCM) &&
|
|
(spu->spu_type == SPU_TYPE_SPUM) &&
|
|
(ctx->digestsize != 8) && (ctx->digestsize != 12) &&
|
|
(ctx->digestsize != 16)) {
|
|
flow_log("%s() AES CCM needs fallback for digest size %d\n",
|
|
__func__, ctx->digestsize);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* SPU-M on NSP has an issue where AES-CCM hash is not correct
|
|
* when AAD size is 0
|
|
*/
|
|
if ((ctx->cipher.mode == CIPHER_MODE_CCM) &&
|
|
(spu->spu_subtype == SPU_SUBTYPE_SPUM_NSP) &&
|
|
(req->assoclen == 0)) {
|
|
flow_log("%s() AES_CCM needs fallback for 0 len AAD on NSP\n",
|
|
__func__);
|
|
return 1;
|
|
}
|
|
|
|
payload_len = req->cryptlen;
|
|
if (spu->spu_type == SPU_TYPE_SPUM)
|
|
payload_len += req->assoclen;
|
|
|
|
flow_log("%s() payload len: %u\n", __func__, payload_len);
|
|
|
|
if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
|
|
return 0;
|
|
else
|
|
return payload_len > ctx->max_payload;
|
|
}
|
|
|
|
static void aead_complete(struct crypto_async_request *areq, int err)
|
|
{
|
|
struct aead_request *req =
|
|
container_of(areq, struct aead_request, base);
|
|
struct iproc_reqctx_s *rctx = aead_request_ctx(req);
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
|
|
|
flow_log("%s() err:%d\n", __func__, err);
|
|
|
|
areq->tfm = crypto_aead_tfm(aead);
|
|
|
|
areq->complete = rctx->old_complete;
|
|
areq->data = rctx->old_data;
|
|
|
|
areq->complete(areq, err);
|
|
}
|
|
|
|
static int aead_do_fallback(struct aead_request *req, bool is_encrypt)
|
|
{
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
|
struct crypto_tfm *tfm = crypto_aead_tfm(aead);
|
|
struct iproc_reqctx_s *rctx = aead_request_ctx(req);
|
|
struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
|
|
int err;
|
|
u32 req_flags;
|
|
|
|
flow_log("%s() enc:%u\n", __func__, is_encrypt);
|
|
|
|
if (ctx->fallback_cipher) {
|
|
/* Store the cipher tfm and then use the fallback tfm */
|
|
rctx->old_tfm = tfm;
|
|
aead_request_set_tfm(req, ctx->fallback_cipher);
|
|
/*
|
|
* Save the callback and chain ourselves in, so we can restore
|
|
* the tfm
|
|
*/
|
|
rctx->old_complete = req->base.complete;
|
|
rctx->old_data = req->base.data;
|
|
req_flags = aead_request_flags(req);
|
|
aead_request_set_callback(req, req_flags, aead_complete, req);
|
|
err = is_encrypt ? crypto_aead_encrypt(req) :
|
|
crypto_aead_decrypt(req);
|
|
|
|
if (err == 0) {
|
|
/*
|
|
* fallback was synchronous (did not return
|
|
* -EINPROGRESS). So restore request state here.
|
|
*/
|
|
aead_request_set_callback(req, req_flags,
|
|
rctx->old_complete, req);
|
|
req->base.data = rctx->old_data;
|
|
aead_request_set_tfm(req, aead);
|
|
flow_log("%s() fallback completed successfully\n\n",
|
|
__func__);
|
|
}
|
|
} else {
|
|
err = -EINVAL;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int aead_enqueue(struct aead_request *req, bool is_encrypt)
|
|
{
|
|
struct iproc_reqctx_s *rctx = aead_request_ctx(req);
|
|
struct crypto_aead *aead = crypto_aead_reqtfm(req);
|
|
struct iproc_ctx_s *ctx = crypto_aead_ctx(aead);
|
|
int err;
|
|
|
|
flow_log("%s() enc:%u\n", __func__, is_encrypt);
|
|
|
|
if (req->assoclen > MAX_ASSOC_SIZE) {
|
|
pr_err
|
|
("%s() Error: associated data too long. (%u > %u bytes)\n",
|
|
__func__, req->assoclen, MAX_ASSOC_SIZE);
|
|
return -EINVAL;
|
|
}
|
|
|
|
rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
|
|
CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
|
|
rctx->parent = &req->base;
|
|
rctx->is_encrypt = is_encrypt;
|
|
rctx->bd_suppress = false;
|
|
rctx->total_todo = req->cryptlen;
|
|
rctx->src_sent = 0;
|
|
rctx->total_sent = 0;
|
|
rctx->total_received = 0;
|
|
rctx->is_sw_hmac = false;
|
|
rctx->ctx = ctx;
|
|
memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message));
|
|
|
|
/* assoc data is at start of src sg */
|
|
rctx->assoc = req->src;
|
|
|
|
/*
|
|
* Init current position in src scatterlist to be after assoc data.
|
|
* src_skip set to buffer offset where data begins. (Assoc data could
|
|
* end in the middle of a buffer.)
|
|
*/
|
|
if (spu_sg_at_offset(req->src, req->assoclen, &rctx->src_sg,
|
|
&rctx->src_skip) < 0) {
|
|
pr_err("%s() Error: Unable to find start of src data\n",
|
|
__func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
rctx->src_nents = 0;
|
|
rctx->dst_nents = 0;
|
|
if (req->dst == req->src) {
|
|
rctx->dst_sg = rctx->src_sg;
|
|
rctx->dst_skip = rctx->src_skip;
|
|
} else {
|
|
/*
|
|
* Expect req->dst to have room for assoc data followed by
|
|
* output data and ICV, if encrypt. So initialize dst_sg
|
|
* to point beyond assoc len offset.
|
|
*/
|
|
if (spu_sg_at_offset(req->dst, req->assoclen, &rctx->dst_sg,
|
|
&rctx->dst_skip) < 0) {
|
|
pr_err("%s() Error: Unable to find start of dst data\n",
|
|
__func__);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
if (ctx->cipher.mode == CIPHER_MODE_CBC ||
|
|
ctx->cipher.mode == CIPHER_MODE_CTR ||
|
|
ctx->cipher.mode == CIPHER_MODE_OFB ||
|
|
ctx->cipher.mode == CIPHER_MODE_XTS ||
|
|
ctx->cipher.mode == CIPHER_MODE_GCM) {
|
|
rctx->iv_ctr_len =
|
|
ctx->salt_len +
|
|
crypto_aead_ivsize(crypto_aead_reqtfm(req));
|
|
} else if (ctx->cipher.mode == CIPHER_MODE_CCM) {
|
|
rctx->iv_ctr_len = CCM_AES_IV_SIZE;
|
|
} else {
|
|
rctx->iv_ctr_len = 0;
|
|
}
|
|
|
|
rctx->hash_carry_len = 0;
|
|
|
|
flow_log(" src sg: %p\n", req->src);
|
|
flow_log(" rctx->src_sg: %p, src_skip %u\n",
|
|
rctx->src_sg, rctx->src_skip);
|
|
flow_log(" assoc: %p, assoclen %u\n", rctx->assoc, req->assoclen);
|
|
flow_log(" dst sg: %p\n", req->dst);
|
|
flow_log(" rctx->dst_sg: %p, dst_skip %u\n",
|
|
rctx->dst_sg, rctx->dst_skip);
|
|
flow_log(" iv_ctr_len:%u\n", rctx->iv_ctr_len);
|
|
flow_dump(" iv: ", req->iv, rctx->iv_ctr_len);
|
|
flow_log(" authkeylen:%u\n", ctx->authkeylen);
|
|
flow_log(" is_esp: %s\n", ctx->is_esp ? "yes" : "no");
|
|
|
|
if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
|
|
flow_log(" max_payload infinite");
|
|
else
|
|
flow_log(" max_payload: %u\n", ctx->max_payload);
|
|
|
|
if (unlikely(aead_need_fallback(req)))
|
|
return aead_do_fallback(req, is_encrypt);
|
|
|
|
/*
|
|
* Do memory allocations for request after fallback check, because if we
|
|
* do fallback, we won't call finish_req() to dealloc.
|
|
*/
|
|
if (rctx->iv_ctr_len) {
|
|
if (ctx->salt_len)
|
|
memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset,
|
|
ctx->salt, ctx->salt_len);
|
|
memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset + ctx->salt_len,
|
|
req->iv,
|
|
rctx->iv_ctr_len - ctx->salt_len - ctx->salt_offset);
|
|
}
|
|
|
|
rctx->chan_idx = select_channel();
|
|
err = handle_aead_req(rctx);
|
|
if (err != -EINPROGRESS)
|
|
/* synchronous result */
|
|
spu_chunk_cleanup(rctx);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int aead_authenc_setkey(struct crypto_aead *cipher,
|
|
const u8 *key, unsigned int keylen)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
|
|
struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
|
|
struct rtattr *rta = (void *)key;
|
|
struct crypto_authenc_key_param *param;
|
|
const u8 *origkey = key;
|
|
const unsigned int origkeylen = keylen;
|
|
|
|
int ret = 0;
|
|
|
|
flow_log("%s() aead:%p key:%p keylen:%u\n", __func__, cipher, key,
|
|
keylen);
|
|
flow_dump(" key: ", key, keylen);
|
|
|
|
if (!RTA_OK(rta, keylen))
|
|
goto badkey;
|
|
if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
|
|
goto badkey;
|
|
if (RTA_PAYLOAD(rta) < sizeof(*param))
|
|
goto badkey;
|
|
|
|
param = RTA_DATA(rta);
|
|
ctx->enckeylen = be32_to_cpu(param->enckeylen);
|
|
|
|
key += RTA_ALIGN(rta->rta_len);
|
|
keylen -= RTA_ALIGN(rta->rta_len);
|
|
|
|
if (keylen < ctx->enckeylen)
|
|
goto badkey;
|
|
if (ctx->enckeylen > MAX_KEY_SIZE)
|
|
goto badkey;
|
|
|
|
ctx->authkeylen = keylen - ctx->enckeylen;
|
|
|
|
if (ctx->authkeylen > MAX_KEY_SIZE)
|
|
goto badkey;
|
|
|
|
memcpy(ctx->enckey, key + ctx->authkeylen, ctx->enckeylen);
|
|
/* May end up padding auth key. So make sure it's zeroed. */
|
|
memset(ctx->authkey, 0, sizeof(ctx->authkey));
|
|
memcpy(ctx->authkey, key, ctx->authkeylen);
|
|
|
|
switch (ctx->alg->cipher_info.alg) {
|
|
case CIPHER_ALG_DES:
|
|
if (ctx->enckeylen == DES_KEY_SIZE) {
|
|
u32 tmp[DES_EXPKEY_WORDS];
|
|
u32 flags = CRYPTO_TFM_RES_WEAK_KEY;
|
|
|
|
if (des_ekey(tmp, key) == 0) {
|
|
if (crypto_aead_get_flags(cipher) &
|
|
CRYPTO_TFM_REQ_WEAK_KEY) {
|
|
crypto_aead_set_flags(cipher, flags);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
ctx->cipher_type = CIPHER_TYPE_DES;
|
|
} else {
|
|
goto badkey;
|
|
}
|
|
break;
|
|
case CIPHER_ALG_3DES:
|
|
if (ctx->enckeylen == (DES_KEY_SIZE * 3)) {
|
|
const u32 *K = (const u32 *)key;
|
|
u32 flags = CRYPTO_TFM_RES_BAD_KEY_SCHED;
|
|
|
|
if (!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
|
|
!((K[2] ^ K[4]) | (K[3] ^ K[5]))) {
|
|
crypto_aead_set_flags(cipher, flags);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ctx->cipher_type = CIPHER_TYPE_3DES;
|
|
} else {
|
|
crypto_aead_set_flags(cipher,
|
|
CRYPTO_TFM_RES_BAD_KEY_LEN);
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case CIPHER_ALG_AES:
|
|
switch (ctx->enckeylen) {
|
|
case AES_KEYSIZE_128:
|
|
ctx->cipher_type = CIPHER_TYPE_AES128;
|
|
break;
|
|
case AES_KEYSIZE_192:
|
|
ctx->cipher_type = CIPHER_TYPE_AES192;
|
|
break;
|
|
case AES_KEYSIZE_256:
|
|
ctx->cipher_type = CIPHER_TYPE_AES256;
|
|
break;
|
|
default:
|
|
goto badkey;
|
|
}
|
|
break;
|
|
case CIPHER_ALG_RC4:
|
|
ctx->cipher_type = CIPHER_TYPE_INIT;
|
|
break;
|
|
default:
|
|
pr_err("%s() Error: Unknown cipher alg\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen,
|
|
ctx->authkeylen);
|
|
flow_dump(" enc: ", ctx->enckey, ctx->enckeylen);
|
|
flow_dump(" auth: ", ctx->authkey, ctx->authkeylen);
|
|
|
|
/* setkey the fallback just in case we needto use it */
|
|
if (ctx->fallback_cipher) {
|
|
flow_log(" running fallback setkey()\n");
|
|
|
|
ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK;
|
|
ctx->fallback_cipher->base.crt_flags |=
|
|
tfm->crt_flags & CRYPTO_TFM_REQ_MASK;
|
|
ret =
|
|
crypto_aead_setkey(ctx->fallback_cipher, origkey,
|
|
origkeylen);
|
|
if (ret) {
|
|
flow_log(" fallback setkey() returned:%d\n", ret);
|
|
tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
|
|
tfm->crt_flags |=
|
|
(ctx->fallback_cipher->base.crt_flags &
|
|
CRYPTO_TFM_RES_MASK);
|
|
}
|
|
}
|
|
|
|
ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,
|
|
ctx->enckeylen,
|
|
false);
|
|
|
|
atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]);
|
|
|
|
return ret;
|
|
|
|
badkey:
|
|
ctx->enckeylen = 0;
|
|
ctx->authkeylen = 0;
|
|
ctx->digestsize = 0;
|
|
|
|
crypto_aead_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int aead_gcm_ccm_setkey(struct crypto_aead *cipher,
|
|
const u8 *key, unsigned int keylen)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
|
|
struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
|
|
|
|
int ret = 0;
|
|
|
|
flow_log("%s() keylen:%u\n", __func__, keylen);
|
|
flow_dump(" key: ", key, keylen);
|
|
|
|
if (!ctx->is_esp)
|
|
ctx->digestsize = keylen;
|
|
|
|
ctx->enckeylen = keylen;
|
|
ctx->authkeylen = 0;
|
|
memcpy(ctx->enckey, key, ctx->enckeylen);
|
|
|
|
switch (ctx->enckeylen) {
|
|
case AES_KEYSIZE_128:
|
|
ctx->cipher_type = CIPHER_TYPE_AES128;
|
|
break;
|
|
case AES_KEYSIZE_192:
|
|
ctx->cipher_type = CIPHER_TYPE_AES192;
|
|
break;
|
|
case AES_KEYSIZE_256:
|
|
ctx->cipher_type = CIPHER_TYPE_AES256;
|
|
break;
|
|
default:
|
|
goto badkey;
|
|
}
|
|
|
|
flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen,
|
|
ctx->authkeylen);
|
|
flow_dump(" enc: ", ctx->enckey, ctx->enckeylen);
|
|
flow_dump(" auth: ", ctx->authkey, ctx->authkeylen);
|
|
|
|
/* setkey the fallback just in case we need to use it */
|
|
if (ctx->fallback_cipher) {
|
|
flow_log(" running fallback setkey()\n");
|
|
|
|
ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK;
|
|
ctx->fallback_cipher->base.crt_flags |=
|
|
tfm->crt_flags & CRYPTO_TFM_REQ_MASK;
|
|
ret = crypto_aead_setkey(ctx->fallback_cipher, key,
|
|
keylen + ctx->salt_len);
|
|
if (ret) {
|
|
flow_log(" fallback setkey() returned:%d\n", ret);
|
|
tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
|
|
tfm->crt_flags |=
|
|
(ctx->fallback_cipher->base.crt_flags &
|
|
CRYPTO_TFM_RES_MASK);
|
|
}
|
|
}
|
|
|
|
ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,
|
|
ctx->enckeylen,
|
|
false);
|
|
|
|
atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]);
|
|
|
|
flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen,
|
|
ctx->authkeylen);
|
|
|
|
return ret;
|
|
|
|
badkey:
|
|
ctx->enckeylen = 0;
|
|
ctx->authkeylen = 0;
|
|
ctx->digestsize = 0;
|
|
|
|
crypto_aead_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* aead_gcm_esp_setkey() - setkey() operation for ESP variant of GCM AES.
|
|
* @cipher: AEAD structure
|
|
* @key: Key followed by 4 bytes of salt
|
|
* @keylen: Length of key plus salt, in bytes
|
|
*
|
|
* Extracts salt from key and stores it to be prepended to IV on each request.
|
|
* Digest is always 16 bytes
|
|
*
|
|
* Return: Value from generic gcm setkey.
|
|
*/
|
|
static int aead_gcm_esp_setkey(struct crypto_aead *cipher,
|
|
const u8 *key, unsigned int keylen)
|
|
{
|
|
struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
|
|
|
|
flow_log("%s\n", __func__);
|
|
ctx->salt_len = GCM_ESP_SALT_SIZE;
|
|
ctx->salt_offset = GCM_ESP_SALT_OFFSET;
|
|
memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE);
|
|
keylen -= GCM_ESP_SALT_SIZE;
|
|
ctx->digestsize = GCM_ESP_DIGESTSIZE;
|
|
ctx->is_esp = true;
|
|
flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE);
|
|
|
|
return aead_gcm_ccm_setkey(cipher, key, keylen);
|
|
}
|
|
|
|
/**
|
|
* rfc4543_gcm_esp_setkey() - setkey operation for RFC4543 variant of GCM/GMAC.
|
|
* cipher: AEAD structure
|
|
* key: Key followed by 4 bytes of salt
|
|
* keylen: Length of key plus salt, in bytes
|
|
*
|
|
* Extracts salt from key and stores it to be prepended to IV on each request.
|
|
* Digest is always 16 bytes
|
|
*
|
|
* Return: Value from generic gcm setkey.
|
|
*/
|
|
static int rfc4543_gcm_esp_setkey(struct crypto_aead *cipher,
|
|
const u8 *key, unsigned int keylen)
|
|
{
|
|
struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
|
|
|
|
flow_log("%s\n", __func__);
|
|
ctx->salt_len = GCM_ESP_SALT_SIZE;
|
|
ctx->salt_offset = GCM_ESP_SALT_OFFSET;
|
|
memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE);
|
|
keylen -= GCM_ESP_SALT_SIZE;
|
|
ctx->digestsize = GCM_ESP_DIGESTSIZE;
|
|
ctx->is_esp = true;
|
|
ctx->is_rfc4543 = true;
|
|
flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE);
|
|
|
|
return aead_gcm_ccm_setkey(cipher, key, keylen);
|
|
}
|
|
|
|
/**
|
|
* aead_ccm_esp_setkey() - setkey() operation for ESP variant of CCM AES.
|
|
* @cipher: AEAD structure
|
|
* @key: Key followed by 4 bytes of salt
|
|
* @keylen: Length of key plus salt, in bytes
|
|
*
|
|
* Extracts salt from key and stores it to be prepended to IV on each request.
|
|
* Digest is always 16 bytes
|
|
*
|
|
* Return: Value from generic ccm setkey.
|
|
*/
|
|
static int aead_ccm_esp_setkey(struct crypto_aead *cipher,
|
|
const u8 *key, unsigned int keylen)
|
|
{
|
|
struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
|
|
|
|
flow_log("%s\n", __func__);
|
|
ctx->salt_len = CCM_ESP_SALT_SIZE;
|
|
ctx->salt_offset = CCM_ESP_SALT_OFFSET;
|
|
memcpy(ctx->salt, key + keylen - CCM_ESP_SALT_SIZE, CCM_ESP_SALT_SIZE);
|
|
keylen -= CCM_ESP_SALT_SIZE;
|
|
ctx->is_esp = true;
|
|
flow_dump("salt: ", ctx->salt, CCM_ESP_SALT_SIZE);
|
|
|
|
return aead_gcm_ccm_setkey(cipher, key, keylen);
|
|
}
|
|
|
|
static int aead_setauthsize(struct crypto_aead *cipher, unsigned int authsize)
|
|
{
|
|
struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
|
|
int ret = 0;
|
|
|
|
flow_log("%s() authkeylen:%u authsize:%u\n",
|
|
__func__, ctx->authkeylen, authsize);
|
|
|
|
ctx->digestsize = authsize;
|
|
|
|
/* setkey the fallback just in case we needto use it */
|
|
if (ctx->fallback_cipher) {
|
|
flow_log(" running fallback setauth()\n");
|
|
|
|
ret = crypto_aead_setauthsize(ctx->fallback_cipher, authsize);
|
|
if (ret)
|
|
flow_log(" fallback setauth() returned:%d\n", ret);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int aead_encrypt(struct aead_request *req)
|
|
{
|
|
flow_log("%s() cryptlen:%u %08x\n", __func__, req->cryptlen,
|
|
req->cryptlen);
|
|
dump_sg(req->src, 0, req->cryptlen + req->assoclen);
|
|
flow_log(" assoc_len:%u\n", req->assoclen);
|
|
|
|
return aead_enqueue(req, true);
|
|
}
|
|
|
|
static int aead_decrypt(struct aead_request *req)
|
|
{
|
|
flow_log("%s() cryptlen:%u\n", __func__, req->cryptlen);
|
|
dump_sg(req->src, 0, req->cryptlen + req->assoclen);
|
|
flow_log(" assoc_len:%u\n", req->assoclen);
|
|
|
|
return aead_enqueue(req, false);
|
|
}
|
|
|
|
/* ==================== Supported Cipher Algorithms ==================== */
|
|
|
|
static struct iproc_alg_s driver_algs[] = {
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "gcm(aes)",
|
|
.cra_driver_name = "gcm-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK
|
|
},
|
|
.setkey = aead_gcm_ccm_setkey,
|
|
.ivsize = GCM_AES_IV_SIZE,
|
|
.maxauthsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_GCM,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_AES,
|
|
.mode = HASH_MODE_GCM,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "ccm(aes)",
|
|
.cra_driver_name = "ccm-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK
|
|
},
|
|
.setkey = aead_gcm_ccm_setkey,
|
|
.ivsize = CCM_AES_IV_SIZE,
|
|
.maxauthsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_CCM,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_AES,
|
|
.mode = HASH_MODE_CCM,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "rfc4106(gcm(aes))",
|
|
.cra_driver_name = "gcm-aes-esp-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK
|
|
},
|
|
.setkey = aead_gcm_esp_setkey,
|
|
.ivsize = GCM_RFC4106_IV_SIZE,
|
|
.maxauthsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_GCM,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_AES,
|
|
.mode = HASH_MODE_GCM,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "rfc4309(ccm(aes))",
|
|
.cra_driver_name = "ccm-aes-esp-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK
|
|
},
|
|
.setkey = aead_ccm_esp_setkey,
|
|
.ivsize = CCM_AES_IV_SIZE,
|
|
.maxauthsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_CCM,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_AES,
|
|
.mode = HASH_MODE_CCM,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "rfc4543(gcm(aes))",
|
|
.cra_driver_name = "gmac-aes-esp-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK
|
|
},
|
|
.setkey = rfc4543_gcm_esp_setkey,
|
|
.ivsize = GCM_RFC4106_IV_SIZE,
|
|
.maxauthsize = AES_BLOCK_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_GCM,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_AES,
|
|
.mode = HASH_MODE_GCM,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(md5),cbc(aes))",
|
|
.cra_driver_name = "authenc-hmac-md5-cbc-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.maxauthsize = MD5_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_MD5,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha1),cbc(aes))",
|
|
.cra_driver_name = "authenc-hmac-sha1-cbc-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.maxauthsize = SHA1_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA1,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha256),cbc(aes))",
|
|
.cra_driver_name = "authenc-hmac-sha256-cbc-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.maxauthsize = SHA256_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA256,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(md5),cbc(des))",
|
|
.cra_driver_name = "authenc-hmac-md5-cbc-des-iproc",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
.maxauthsize = MD5_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_MD5,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha1),cbc(des))",
|
|
.cra_driver_name = "authenc-hmac-sha1-cbc-des-iproc",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
.maxauthsize = SHA1_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA1,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha224),cbc(des))",
|
|
.cra_driver_name = "authenc-hmac-sha224-cbc-des-iproc",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
.maxauthsize = SHA224_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA224,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha256),cbc(des))",
|
|
.cra_driver_name = "authenc-hmac-sha256-cbc-des-iproc",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
.maxauthsize = SHA256_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA256,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha384),cbc(des))",
|
|
.cra_driver_name = "authenc-hmac-sha384-cbc-des-iproc",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
.maxauthsize = SHA384_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA384,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha512),cbc(des))",
|
|
.cra_driver_name = "authenc-hmac-sha512-cbc-des-iproc",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
.maxauthsize = SHA512_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA512,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(md5),cbc(des3_ede))",
|
|
.cra_driver_name = "authenc-hmac-md5-cbc-des3-iproc",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
.maxauthsize = MD5_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_3DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_MD5,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha1),cbc(des3_ede))",
|
|
.cra_driver_name = "authenc-hmac-sha1-cbc-des3-iproc",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
.maxauthsize = SHA1_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_3DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA1,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha224),cbc(des3_ede))",
|
|
.cra_driver_name = "authenc-hmac-sha224-cbc-des3-iproc",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
.maxauthsize = SHA224_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_3DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA224,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha256),cbc(des3_ede))",
|
|
.cra_driver_name = "authenc-hmac-sha256-cbc-des3-iproc",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
.maxauthsize = SHA256_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_3DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA256,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha384),cbc(des3_ede))",
|
|
.cra_driver_name = "authenc-hmac-sha384-cbc-des3-iproc",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
.maxauthsize = SHA384_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_3DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA384,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AEAD,
|
|
.alg.aead = {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha512),cbc(des3_ede))",
|
|
.cra_driver_name = "authenc-hmac-sha512-cbc-des3-iproc",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC
|
|
},
|
|
.setkey = aead_authenc_setkey,
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
.maxauthsize = SHA512_DIGEST_SIZE,
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_3DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA512,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
.auth_first = 0,
|
|
},
|
|
|
|
/* ABLKCIPHER algorithms. */
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "ecb(arc4)",
|
|
.cra_driver_name = "ecb-arc4-iproc",
|
|
.cra_blocksize = ARC4_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = ARC4_MIN_KEY_SIZE,
|
|
.max_keysize = ARC4_MAX_KEY_SIZE,
|
|
.ivsize = 0,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_RC4,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "ofb(des)",
|
|
.cra_driver_name = "ofb-des-iproc",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = DES_KEY_SIZE,
|
|
.max_keysize = DES_KEY_SIZE,
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_DES,
|
|
.mode = CIPHER_MODE_OFB,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "cbc(des)",
|
|
.cra_driver_name = "cbc-des-iproc",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = DES_KEY_SIZE,
|
|
.max_keysize = DES_KEY_SIZE,
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "ecb(des)",
|
|
.cra_driver_name = "ecb-des-iproc",
|
|
.cra_blocksize = DES_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = DES_KEY_SIZE,
|
|
.max_keysize = DES_KEY_SIZE,
|
|
.ivsize = 0,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_DES,
|
|
.mode = CIPHER_MODE_ECB,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "ofb(des3_ede)",
|
|
.cra_driver_name = "ofb-des3-iproc",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = DES3_EDE_KEY_SIZE,
|
|
.max_keysize = DES3_EDE_KEY_SIZE,
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_3DES,
|
|
.mode = CIPHER_MODE_OFB,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "cbc(des3_ede)",
|
|
.cra_driver_name = "cbc-des3-iproc",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = DES3_EDE_KEY_SIZE,
|
|
.max_keysize = DES3_EDE_KEY_SIZE,
|
|
.ivsize = DES3_EDE_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_3DES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "ecb(des3_ede)",
|
|
.cra_driver_name = "ecb-des3-iproc",
|
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = DES3_EDE_KEY_SIZE,
|
|
.max_keysize = DES3_EDE_KEY_SIZE,
|
|
.ivsize = 0,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_3DES,
|
|
.mode = CIPHER_MODE_ECB,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "ofb(aes)",
|
|
.cra_driver_name = "ofb-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_OFB,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "cbc(aes)",
|
|
.cra_driver_name = "cbc-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_CBC,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "ecb(aes)",
|
|
.cra_driver_name = "ecb-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.ivsize = 0,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_ECB,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "ctr(aes)",
|
|
.cra_driver_name = "ctr-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
/* .geniv = "chainiv", */
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_CTR,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
|
.alg.crypto = {
|
|
.cra_name = "xts(aes)",
|
|
.cra_driver_name = "xts-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_ablkcipher = {
|
|
.min_keysize = 2 * AES_MIN_KEY_SIZE,
|
|
.max_keysize = 2 * AES_MAX_KEY_SIZE,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_AES,
|
|
.mode = CIPHER_MODE_XTS,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_NONE,
|
|
.mode = HASH_MODE_NONE,
|
|
},
|
|
},
|
|
|
|
/* AHASH algorithms. */
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = MD5_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "md5",
|
|
.cra_driver_name = "md5-iproc",
|
|
.cra_blocksize = MD5_BLOCK_WORDS * 4,
|
|
.cra_flags = CRYPTO_ALG_ASYNC,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_MD5,
|
|
.mode = HASH_MODE_HASH,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = MD5_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "hmac(md5)",
|
|
.cra_driver_name = "hmac-md5-iproc",
|
|
.cra_blocksize = MD5_BLOCK_WORDS * 4,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_MD5,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
},
|
|
{.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA1_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "sha1",
|
|
.cra_driver_name = "sha1-iproc",
|
|
.cra_blocksize = SHA1_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA1,
|
|
.mode = HASH_MODE_HASH,
|
|
},
|
|
},
|
|
{.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA1_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "hmac(sha1)",
|
|
.cra_driver_name = "hmac-sha1-iproc",
|
|
.cra_blocksize = SHA1_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA1,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
},
|
|
{.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA224_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "sha224",
|
|
.cra_driver_name = "sha224-iproc",
|
|
.cra_blocksize = SHA224_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA224,
|
|
.mode = HASH_MODE_HASH,
|
|
},
|
|
},
|
|
{.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA224_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "hmac(sha224)",
|
|
.cra_driver_name = "hmac-sha224-iproc",
|
|
.cra_blocksize = SHA224_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA224,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
},
|
|
{.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA256_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "sha256",
|
|
.cra_driver_name = "sha256-iproc",
|
|
.cra_blocksize = SHA256_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA256,
|
|
.mode = HASH_MODE_HASH,
|
|
},
|
|
},
|
|
{.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA256_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "hmac(sha256)",
|
|
.cra_driver_name = "hmac-sha256-iproc",
|
|
.cra_blocksize = SHA256_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA256,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA384_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "sha384",
|
|
.cra_driver_name = "sha384-iproc",
|
|
.cra_blocksize = SHA384_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA384,
|
|
.mode = HASH_MODE_HASH,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA384_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "hmac(sha384)",
|
|
.cra_driver_name = "hmac-sha384-iproc",
|
|
.cra_blocksize = SHA384_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA384,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA512_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "sha512",
|
|
.cra_driver_name = "sha512-iproc",
|
|
.cra_blocksize = SHA512_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA512,
|
|
.mode = HASH_MODE_HASH,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA512_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "hmac(sha512)",
|
|
.cra_driver_name = "hmac-sha512-iproc",
|
|
.cra_blocksize = SHA512_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA512,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA3_224_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "sha3-224",
|
|
.cra_driver_name = "sha3-224-iproc",
|
|
.cra_blocksize = SHA3_224_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA3_224,
|
|
.mode = HASH_MODE_HASH,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA3_224_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "hmac(sha3-224)",
|
|
.cra_driver_name = "hmac-sha3-224-iproc",
|
|
.cra_blocksize = SHA3_224_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA3_224,
|
|
.mode = HASH_MODE_HMAC
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA3_256_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "sha3-256",
|
|
.cra_driver_name = "sha3-256-iproc",
|
|
.cra_blocksize = SHA3_256_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA3_256,
|
|
.mode = HASH_MODE_HASH,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA3_256_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "hmac(sha3-256)",
|
|
.cra_driver_name = "hmac-sha3-256-iproc",
|
|
.cra_blocksize = SHA3_256_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA3_256,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA3_384_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "sha3-384",
|
|
.cra_driver_name = "sha3-384-iproc",
|
|
.cra_blocksize = SHA3_224_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA3_384,
|
|
.mode = HASH_MODE_HASH,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA3_384_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "hmac(sha3-384)",
|
|
.cra_driver_name = "hmac-sha3-384-iproc",
|
|
.cra_blocksize = SHA3_384_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA3_384,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA3_512_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "sha3-512",
|
|
.cra_driver_name = "sha3-512-iproc",
|
|
.cra_blocksize = SHA3_512_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA3_512,
|
|
.mode = HASH_MODE_HASH,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = SHA3_512_DIGEST_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "hmac(sha3-512)",
|
|
.cra_driver_name = "hmac-sha3-512-iproc",
|
|
.cra_blocksize = SHA3_512_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_SHA3_512,
|
|
.mode = HASH_MODE_HMAC,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = AES_BLOCK_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "xcbc(aes)",
|
|
.cra_driver_name = "xcbc-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_AES,
|
|
.mode = HASH_MODE_XCBC,
|
|
},
|
|
},
|
|
{
|
|
.type = CRYPTO_ALG_TYPE_AHASH,
|
|
.alg.hash = {
|
|
.halg.digestsize = AES_BLOCK_SIZE,
|
|
.halg.base = {
|
|
.cra_name = "cmac(aes)",
|
|
.cra_driver_name = "cmac-aes-iproc",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
}
|
|
},
|
|
.cipher_info = {
|
|
.alg = CIPHER_ALG_NONE,
|
|
.mode = CIPHER_MODE_NONE,
|
|
},
|
|
.auth_info = {
|
|
.alg = HASH_ALG_AES,
|
|
.mode = HASH_MODE_CMAC,
|
|
},
|
|
},
|
|
};
|
|
|
|
static int generic_cra_init(struct crypto_tfm *tfm,
|
|
struct iproc_alg_s *cipher_alg)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
|
|
unsigned int blocksize = crypto_tfm_alg_blocksize(tfm);
|
|
|
|
flow_log("%s()\n", __func__);
|
|
|
|
ctx->alg = cipher_alg;
|
|
ctx->cipher = cipher_alg->cipher_info;
|
|
ctx->auth = cipher_alg->auth_info;
|
|
ctx->auth_first = cipher_alg->auth_first;
|
|
ctx->max_payload = spu->spu_ctx_max_payload(ctx->cipher.alg,
|
|
ctx->cipher.mode,
|
|
blocksize);
|
|
ctx->fallback_cipher = NULL;
|
|
|
|
ctx->enckeylen = 0;
|
|
ctx->authkeylen = 0;
|
|
|
|
atomic_inc(&iproc_priv.stream_count);
|
|
atomic_inc(&iproc_priv.session_count);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ablkcipher_cra_init(struct crypto_tfm *tfm)
|
|
{
|
|
struct crypto_alg *alg = tfm->__crt_alg;
|
|
struct iproc_alg_s *cipher_alg;
|
|
|
|
flow_log("%s()\n", __func__);
|
|
|
|
tfm->crt_ablkcipher.reqsize = sizeof(struct iproc_reqctx_s);
|
|
|
|
cipher_alg = container_of(alg, struct iproc_alg_s, alg.crypto);
|
|
return generic_cra_init(tfm, cipher_alg);
|
|
}
|
|
|
|
static int ahash_cra_init(struct crypto_tfm *tfm)
|
|
{
|
|
int err;
|
|
struct crypto_alg *alg = tfm->__crt_alg;
|
|
struct iproc_alg_s *cipher_alg;
|
|
|
|
cipher_alg = container_of(__crypto_ahash_alg(alg), struct iproc_alg_s,
|
|
alg.hash);
|
|
|
|
err = generic_cra_init(tfm, cipher_alg);
|
|
flow_log("%s()\n", __func__);
|
|
|
|
/*
|
|
* export state size has to be < 512 bytes. So don't include msg bufs
|
|
* in state size.
|
|
*/
|
|
crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
|
|
sizeof(struct iproc_reqctx_s));
|
|
|
|
return err;
|
|
}
|
|
|
|
static int aead_cra_init(struct crypto_aead *aead)
|
|
{
|
|
struct crypto_tfm *tfm = crypto_aead_tfm(aead);
|
|
struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
|
|
struct crypto_alg *alg = tfm->__crt_alg;
|
|
struct aead_alg *aalg = container_of(alg, struct aead_alg, base);
|
|
struct iproc_alg_s *cipher_alg = container_of(aalg, struct iproc_alg_s,
|
|
alg.aead);
|
|
|
|
int err = generic_cra_init(tfm, cipher_alg);
|
|
|
|
flow_log("%s()\n", __func__);
|
|
|
|
crypto_aead_set_reqsize(aead, sizeof(struct iproc_reqctx_s));
|
|
ctx->is_esp = false;
|
|
ctx->salt_len = 0;
|
|
ctx->salt_offset = 0;
|
|
|
|
/* random first IV */
|
|
get_random_bytes(ctx->iv, MAX_IV_SIZE);
|
|
flow_dump(" iv: ", ctx->iv, MAX_IV_SIZE);
|
|
|
|
if (!err) {
|
|
if (alg->cra_flags & CRYPTO_ALG_NEED_FALLBACK) {
|
|
flow_log("%s() creating fallback cipher\n", __func__);
|
|
|
|
ctx->fallback_cipher =
|
|
crypto_alloc_aead(alg->cra_name, 0,
|
|
CRYPTO_ALG_ASYNC |
|
|
CRYPTO_ALG_NEED_FALLBACK);
|
|
if (IS_ERR(ctx->fallback_cipher)) {
|
|
pr_err("%s() Error: failed to allocate fallback for %s\n",
|
|
__func__, alg->cra_name);
|
|
return PTR_ERR(ctx->fallback_cipher);
|
|
}
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void generic_cra_exit(struct crypto_tfm *tfm)
|
|
{
|
|
atomic_dec(&iproc_priv.session_count);
|
|
}
|
|
|
|
static void aead_cra_exit(struct crypto_aead *aead)
|
|
{
|
|
struct crypto_tfm *tfm = crypto_aead_tfm(aead);
|
|
struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
|
|
|
|
generic_cra_exit(tfm);
|
|
|
|
if (ctx->fallback_cipher) {
|
|
crypto_free_aead(ctx->fallback_cipher);
|
|
ctx->fallback_cipher = NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* spu_functions_register() - Specify hardware-specific SPU functions based on
|
|
* SPU type read from device tree.
|
|
* @dev: device structure
|
|
* @spu_type: SPU hardware generation
|
|
* @spu_subtype: SPU hardware version
|
|
*/
|
|
static void spu_functions_register(struct device *dev,
|
|
enum spu_spu_type spu_type,
|
|
enum spu_spu_subtype spu_subtype)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
|
|
if (spu_type == SPU_TYPE_SPUM) {
|
|
dev_dbg(dev, "Registering SPUM functions");
|
|
spu->spu_dump_msg_hdr = spum_dump_msg_hdr;
|
|
spu->spu_payload_length = spum_payload_length;
|
|
spu->spu_response_hdr_len = spum_response_hdr_len;
|
|
spu->spu_hash_pad_len = spum_hash_pad_len;
|
|
spu->spu_gcm_ccm_pad_len = spum_gcm_ccm_pad_len;
|
|
spu->spu_assoc_resp_len = spum_assoc_resp_len;
|
|
spu->spu_aead_ivlen = spum_aead_ivlen;
|
|
spu->spu_hash_type = spum_hash_type;
|
|
spu->spu_digest_size = spum_digest_size;
|
|
spu->spu_create_request = spum_create_request;
|
|
spu->spu_cipher_req_init = spum_cipher_req_init;
|
|
spu->spu_cipher_req_finish = spum_cipher_req_finish;
|
|
spu->spu_request_pad = spum_request_pad;
|
|
spu->spu_tx_status_len = spum_tx_status_len;
|
|
spu->spu_rx_status_len = spum_rx_status_len;
|
|
spu->spu_status_process = spum_status_process;
|
|
spu->spu_xts_tweak_in_payload = spum_xts_tweak_in_payload;
|
|
spu->spu_ccm_update_iv = spum_ccm_update_iv;
|
|
spu->spu_wordalign_padlen = spum_wordalign_padlen;
|
|
if (spu_subtype == SPU_SUBTYPE_SPUM_NS2)
|
|
spu->spu_ctx_max_payload = spum_ns2_ctx_max_payload;
|
|
else
|
|
spu->spu_ctx_max_payload = spum_nsp_ctx_max_payload;
|
|
} else {
|
|
dev_dbg(dev, "Registering SPU2 functions");
|
|
spu->spu_dump_msg_hdr = spu2_dump_msg_hdr;
|
|
spu->spu_ctx_max_payload = spu2_ctx_max_payload;
|
|
spu->spu_payload_length = spu2_payload_length;
|
|
spu->spu_response_hdr_len = spu2_response_hdr_len;
|
|
spu->spu_hash_pad_len = spu2_hash_pad_len;
|
|
spu->spu_gcm_ccm_pad_len = spu2_gcm_ccm_pad_len;
|
|
spu->spu_assoc_resp_len = spu2_assoc_resp_len;
|
|
spu->spu_aead_ivlen = spu2_aead_ivlen;
|
|
spu->spu_hash_type = spu2_hash_type;
|
|
spu->spu_digest_size = spu2_digest_size;
|
|
spu->spu_create_request = spu2_create_request;
|
|
spu->spu_cipher_req_init = spu2_cipher_req_init;
|
|
spu->spu_cipher_req_finish = spu2_cipher_req_finish;
|
|
spu->spu_request_pad = spu2_request_pad;
|
|
spu->spu_tx_status_len = spu2_tx_status_len;
|
|
spu->spu_rx_status_len = spu2_rx_status_len;
|
|
spu->spu_status_process = spu2_status_process;
|
|
spu->spu_xts_tweak_in_payload = spu2_xts_tweak_in_payload;
|
|
spu->spu_ccm_update_iv = spu2_ccm_update_iv;
|
|
spu->spu_wordalign_padlen = spu2_wordalign_padlen;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* spu_mb_init() - Initialize mailbox client. Request ownership of a mailbox
|
|
* channel for the SPU being probed.
|
|
* @dev: SPU driver device structure
|
|
*
|
|
* Return: 0 if successful
|
|
* < 0 otherwise
|
|
*/
|
|
static int spu_mb_init(struct device *dev)
|
|
{
|
|
struct mbox_client *mcl = &iproc_priv.mcl;
|
|
int err, i;
|
|
|
|
iproc_priv.mbox = devm_kcalloc(dev, iproc_priv.spu.num_chan,
|
|
sizeof(struct mbox_chan *), GFP_KERNEL);
|
|
if (!iproc_priv.mbox)
|
|
return -ENOMEM;
|
|
|
|
mcl->dev = dev;
|
|
mcl->tx_block = false;
|
|
mcl->tx_tout = 0;
|
|
mcl->knows_txdone = true;
|
|
mcl->rx_callback = spu_rx_callback;
|
|
mcl->tx_done = NULL;
|
|
|
|
for (i = 0; i < iproc_priv.spu.num_chan; i++) {
|
|
iproc_priv.mbox[i] = mbox_request_channel(mcl, i);
|
|
if (IS_ERR(iproc_priv.mbox[i])) {
|
|
err = (int)PTR_ERR(iproc_priv.mbox[i]);
|
|
dev_err(dev,
|
|
"Mbox channel %d request failed with err %d",
|
|
i, err);
|
|
iproc_priv.mbox[i] = NULL;
|
|
goto free_channels;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
free_channels:
|
|
for (i = 0; i < iproc_priv.spu.num_chan; i++) {
|
|
if (iproc_priv.mbox[i])
|
|
mbox_free_channel(iproc_priv.mbox[i]);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void spu_mb_release(struct platform_device *pdev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < iproc_priv.spu.num_chan; i++)
|
|
mbox_free_channel(iproc_priv.mbox[i]);
|
|
}
|
|
|
|
static void spu_counters_init(void)
|
|
{
|
|
int i;
|
|
int j;
|
|
|
|
atomic_set(&iproc_priv.session_count, 0);
|
|
atomic_set(&iproc_priv.stream_count, 0);
|
|
atomic_set(&iproc_priv.next_chan, (int)iproc_priv.spu.num_chan);
|
|
atomic64_set(&iproc_priv.bytes_in, 0);
|
|
atomic64_set(&iproc_priv.bytes_out, 0);
|
|
for (i = 0; i < SPU_OP_NUM; i++) {
|
|
atomic_set(&iproc_priv.op_counts[i], 0);
|
|
atomic_set(&iproc_priv.setkey_cnt[i], 0);
|
|
}
|
|
for (i = 0; i < CIPHER_ALG_LAST; i++)
|
|
for (j = 0; j < CIPHER_MODE_LAST; j++)
|
|
atomic_set(&iproc_priv.cipher_cnt[i][j], 0);
|
|
|
|
for (i = 0; i < HASH_ALG_LAST; i++) {
|
|
atomic_set(&iproc_priv.hash_cnt[i], 0);
|
|
atomic_set(&iproc_priv.hmac_cnt[i], 0);
|
|
}
|
|
for (i = 0; i < AEAD_TYPE_LAST; i++)
|
|
atomic_set(&iproc_priv.aead_cnt[i], 0);
|
|
|
|
atomic_set(&iproc_priv.mb_no_spc, 0);
|
|
atomic_set(&iproc_priv.mb_send_fail, 0);
|
|
atomic_set(&iproc_priv.bad_icv, 0);
|
|
}
|
|
|
|
static int spu_register_ablkcipher(struct iproc_alg_s *driver_alg)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct crypto_alg *crypto = &driver_alg->alg.crypto;
|
|
int err;
|
|
|
|
/* SPU2 does not support RC4 */
|
|
if ((driver_alg->cipher_info.alg == CIPHER_ALG_RC4) &&
|
|
(spu->spu_type == SPU_TYPE_SPU2))
|
|
return 0;
|
|
|
|
crypto->cra_module = THIS_MODULE;
|
|
crypto->cra_priority = cipher_pri;
|
|
crypto->cra_alignmask = 0;
|
|
crypto->cra_ctxsize = sizeof(struct iproc_ctx_s);
|
|
INIT_LIST_HEAD(&crypto->cra_list);
|
|
|
|
crypto->cra_init = ablkcipher_cra_init;
|
|
crypto->cra_exit = generic_cra_exit;
|
|
crypto->cra_type = &crypto_ablkcipher_type;
|
|
crypto->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
|
|
CRYPTO_ALG_KERN_DRIVER_ONLY;
|
|
|
|
crypto->cra_ablkcipher.setkey = ablkcipher_setkey;
|
|
crypto->cra_ablkcipher.encrypt = ablkcipher_encrypt;
|
|
crypto->cra_ablkcipher.decrypt = ablkcipher_decrypt;
|
|
|
|
err = crypto_register_alg(crypto);
|
|
/* Mark alg as having been registered, if successful */
|
|
if (err == 0)
|
|
driver_alg->registered = true;
|
|
pr_debug(" registered ablkcipher %s\n", crypto->cra_driver_name);
|
|
return err;
|
|
}
|
|
|
|
static int spu_register_ahash(struct iproc_alg_s *driver_alg)
|
|
{
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct ahash_alg *hash = &driver_alg->alg.hash;
|
|
int err;
|
|
|
|
/* AES-XCBC is the only AES hash type currently supported on SPU-M */
|
|
if ((driver_alg->auth_info.alg == HASH_ALG_AES) &&
|
|
(driver_alg->auth_info.mode != HASH_MODE_XCBC) &&
|
|
(spu->spu_type == SPU_TYPE_SPUM))
|
|
return 0;
|
|
|
|
/* SHA3 algorithm variants are not registered for SPU-M or SPU2. */
|
|
if ((driver_alg->auth_info.alg >= HASH_ALG_SHA3_224) &&
|
|
(spu->spu_subtype != SPU_SUBTYPE_SPU2_V2))
|
|
return 0;
|
|
|
|
hash->halg.base.cra_module = THIS_MODULE;
|
|
hash->halg.base.cra_priority = hash_pri;
|
|
hash->halg.base.cra_alignmask = 0;
|
|
hash->halg.base.cra_ctxsize = sizeof(struct iproc_ctx_s);
|
|
hash->halg.base.cra_init = ahash_cra_init;
|
|
hash->halg.base.cra_exit = generic_cra_exit;
|
|
hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC;
|
|
hash->halg.statesize = sizeof(struct spu_hash_export_s);
|
|
|
|
if (driver_alg->auth_info.mode != HASH_MODE_HMAC) {
|
|
hash->setkey = ahash_setkey;
|
|
hash->init = ahash_init;
|
|
hash->update = ahash_update;
|
|
hash->final = ahash_final;
|
|
hash->finup = ahash_finup;
|
|
hash->digest = ahash_digest;
|
|
} else {
|
|
hash->setkey = ahash_hmac_setkey;
|
|
hash->init = ahash_hmac_init;
|
|
hash->update = ahash_hmac_update;
|
|
hash->final = ahash_hmac_final;
|
|
hash->finup = ahash_hmac_finup;
|
|
hash->digest = ahash_hmac_digest;
|
|
}
|
|
hash->export = ahash_export;
|
|
hash->import = ahash_import;
|
|
|
|
err = crypto_register_ahash(hash);
|
|
/* Mark alg as having been registered, if successful */
|
|
if (err == 0)
|
|
driver_alg->registered = true;
|
|
pr_debug(" registered ahash %s\n",
|
|
hash->halg.base.cra_driver_name);
|
|
return err;
|
|
}
|
|
|
|
static int spu_register_aead(struct iproc_alg_s *driver_alg)
|
|
{
|
|
struct aead_alg *aead = &driver_alg->alg.aead;
|
|
int err;
|
|
|
|
aead->base.cra_module = THIS_MODULE;
|
|
aead->base.cra_priority = aead_pri;
|
|
aead->base.cra_alignmask = 0;
|
|
aead->base.cra_ctxsize = sizeof(struct iproc_ctx_s);
|
|
INIT_LIST_HEAD(&aead->base.cra_list);
|
|
|
|
aead->base.cra_flags |= CRYPTO_ALG_ASYNC;
|
|
/* setkey set in alg initialization */
|
|
aead->setauthsize = aead_setauthsize;
|
|
aead->encrypt = aead_encrypt;
|
|
aead->decrypt = aead_decrypt;
|
|
aead->init = aead_cra_init;
|
|
aead->exit = aead_cra_exit;
|
|
|
|
err = crypto_register_aead(aead);
|
|
/* Mark alg as having been registered, if successful */
|
|
if (err == 0)
|
|
driver_alg->registered = true;
|
|
pr_debug(" registered aead %s\n", aead->base.cra_driver_name);
|
|
return err;
|
|
}
|
|
|
|
/* register crypto algorithms the device supports */
|
|
static int spu_algs_register(struct device *dev)
|
|
{
|
|
int i, j;
|
|
int err;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
|
|
switch (driver_algs[i].type) {
|
|
case CRYPTO_ALG_TYPE_ABLKCIPHER:
|
|
err = spu_register_ablkcipher(&driver_algs[i]);
|
|
break;
|
|
case CRYPTO_ALG_TYPE_AHASH:
|
|
err = spu_register_ahash(&driver_algs[i]);
|
|
break;
|
|
case CRYPTO_ALG_TYPE_AEAD:
|
|
err = spu_register_aead(&driver_algs[i]);
|
|
break;
|
|
default:
|
|
dev_err(dev,
|
|
"iproc-crypto: unknown alg type: %d",
|
|
driver_algs[i].type);
|
|
err = -EINVAL;
|
|
}
|
|
|
|
if (err) {
|
|
dev_err(dev, "alg registration failed with error %d\n",
|
|
err);
|
|
goto err_algs;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_algs:
|
|
for (j = 0; j < i; j++) {
|
|
/* Skip any algorithm not registered */
|
|
if (!driver_algs[j].registered)
|
|
continue;
|
|
switch (driver_algs[j].type) {
|
|
case CRYPTO_ALG_TYPE_ABLKCIPHER:
|
|
crypto_unregister_alg(&driver_algs[j].alg.crypto);
|
|
driver_algs[j].registered = false;
|
|
break;
|
|
case CRYPTO_ALG_TYPE_AHASH:
|
|
crypto_unregister_ahash(&driver_algs[j].alg.hash);
|
|
driver_algs[j].registered = false;
|
|
break;
|
|
case CRYPTO_ALG_TYPE_AEAD:
|
|
crypto_unregister_aead(&driver_algs[j].alg.aead);
|
|
driver_algs[j].registered = false;
|
|
break;
|
|
}
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/* ==================== Kernel Platform API ==================== */
|
|
|
|
static struct spu_type_subtype spum_ns2_types = {
|
|
SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NS2
|
|
};
|
|
|
|
static struct spu_type_subtype spum_nsp_types = {
|
|
SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NSP
|
|
};
|
|
|
|
static struct spu_type_subtype spu2_types = {
|
|
SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V1
|
|
};
|
|
|
|
static struct spu_type_subtype spu2_v2_types = {
|
|
SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V2
|
|
};
|
|
|
|
static const struct of_device_id bcm_spu_dt_ids[] = {
|
|
{
|
|
.compatible = "brcm,spum-crypto",
|
|
.data = &spum_ns2_types,
|
|
},
|
|
{
|
|
.compatible = "brcm,spum-nsp-crypto",
|
|
.data = &spum_nsp_types,
|
|
},
|
|
{
|
|
.compatible = "brcm,spu2-crypto",
|
|
.data = &spu2_types,
|
|
},
|
|
{
|
|
.compatible = "brcm,spu2-v2-crypto",
|
|
.data = &spu2_v2_types,
|
|
},
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, bcm_spu_dt_ids);
|
|
|
|
static int spu_dt_read(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
struct resource *spu_ctrl_regs;
|
|
const struct spu_type_subtype *matched_spu_type;
|
|
struct device_node *dn = pdev->dev.of_node;
|
|
int err, i;
|
|
|
|
/* Count number of mailbox channels */
|
|
spu->num_chan = of_count_phandle_with_args(dn, "mboxes", "#mbox-cells");
|
|
|
|
matched_spu_type = of_device_get_match_data(dev);
|
|
if (!matched_spu_type) {
|
|
dev_err(&pdev->dev, "Failed to match device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
spu->spu_type = matched_spu_type->type;
|
|
spu->spu_subtype = matched_spu_type->subtype;
|
|
|
|
i = 0;
|
|
for (i = 0; (i < MAX_SPUS) && ((spu_ctrl_regs =
|
|
platform_get_resource(pdev, IORESOURCE_MEM, i)) != NULL); i++) {
|
|
|
|
spu->reg_vbase[i] = devm_ioremap_resource(dev, spu_ctrl_regs);
|
|
if (IS_ERR(spu->reg_vbase[i])) {
|
|
err = PTR_ERR(spu->reg_vbase[i]);
|
|
dev_err(&pdev->dev, "Failed to map registers: %d\n",
|
|
err);
|
|
spu->reg_vbase[i] = NULL;
|
|
return err;
|
|
}
|
|
}
|
|
spu->num_spu = i;
|
|
dev_dbg(dev, "Device has %d SPUs", spu->num_spu);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bcm_spu_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct spu_hw *spu = &iproc_priv.spu;
|
|
int err = 0;
|
|
|
|
iproc_priv.pdev = pdev;
|
|
platform_set_drvdata(iproc_priv.pdev,
|
|
&iproc_priv);
|
|
|
|
err = spu_dt_read(pdev);
|
|
if (err < 0)
|
|
goto failure;
|
|
|
|
err = spu_mb_init(&pdev->dev);
|
|
if (err < 0)
|
|
goto failure;
|
|
|
|
if (spu->spu_type == SPU_TYPE_SPUM)
|
|
iproc_priv.bcm_hdr_len = 8;
|
|
else if (spu->spu_type == SPU_TYPE_SPU2)
|
|
iproc_priv.bcm_hdr_len = 0;
|
|
|
|
spu_functions_register(&pdev->dev, spu->spu_type, spu->spu_subtype);
|
|
|
|
spu_counters_init();
|
|
|
|
spu_setup_debugfs();
|
|
|
|
err = spu_algs_register(dev);
|
|
if (err < 0)
|
|
goto fail_reg;
|
|
|
|
return 0;
|
|
|
|
fail_reg:
|
|
spu_free_debugfs();
|
|
failure:
|
|
spu_mb_release(pdev);
|
|
dev_err(dev, "%s failed with error %d.\n", __func__, err);
|
|
|
|
return err;
|
|
}
|
|
|
|
int bcm_spu_remove(struct platform_device *pdev)
|
|
{
|
|
int i;
|
|
struct device *dev = &pdev->dev;
|
|
char *cdn;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
|
|
/*
|
|
* Not all algorithms were registered, depending on whether
|
|
* hardware is SPU or SPU2. So here we make sure to skip
|
|
* those algorithms that were not previously registered.
|
|
*/
|
|
if (!driver_algs[i].registered)
|
|
continue;
|
|
|
|
switch (driver_algs[i].type) {
|
|
case CRYPTO_ALG_TYPE_ABLKCIPHER:
|
|
crypto_unregister_alg(&driver_algs[i].alg.crypto);
|
|
dev_dbg(dev, " unregistered cipher %s\n",
|
|
driver_algs[i].alg.crypto.cra_driver_name);
|
|
driver_algs[i].registered = false;
|
|
break;
|
|
case CRYPTO_ALG_TYPE_AHASH:
|
|
crypto_unregister_ahash(&driver_algs[i].alg.hash);
|
|
cdn = driver_algs[i].alg.hash.halg.base.cra_driver_name;
|
|
dev_dbg(dev, " unregistered hash %s\n", cdn);
|
|
driver_algs[i].registered = false;
|
|
break;
|
|
case CRYPTO_ALG_TYPE_AEAD:
|
|
crypto_unregister_aead(&driver_algs[i].alg.aead);
|
|
dev_dbg(dev, " unregistered aead %s\n",
|
|
driver_algs[i].alg.aead.base.cra_driver_name);
|
|
driver_algs[i].registered = false;
|
|
break;
|
|
}
|
|
}
|
|
spu_free_debugfs();
|
|
spu_mb_release(pdev);
|
|
return 0;
|
|
}
|
|
|
|
/* ===== Kernel Module API ===== */
|
|
|
|
static struct platform_driver bcm_spu_pdriver = {
|
|
.driver = {
|
|
.name = "brcm-spu-crypto",
|
|
.of_match_table = of_match_ptr(bcm_spu_dt_ids),
|
|
},
|
|
.probe = bcm_spu_probe,
|
|
.remove = bcm_spu_remove,
|
|
};
|
|
module_platform_driver(bcm_spu_pdriver);
|
|
|
|
MODULE_AUTHOR("Rob Rice <rob.rice@broadcom.com>");
|
|
MODULE_DESCRIPTION("Broadcom symmetric crypto offload driver");
|
|
MODULE_LICENSE("GPL v2");
|