diff options
Diffstat (limited to 'drivers/crypto/chelsio')
| -rw-r--r-- | drivers/crypto/chelsio/Kconfig | 23 | ||||
| -rw-r--r-- | drivers/crypto/chelsio/Makefile | 5 | ||||
| -rw-r--r-- | drivers/crypto/chelsio/chcr_algo.c | 4531 | ||||
| -rw-r--r-- | drivers/crypto/chelsio/chcr_algo.h | 405 | ||||
| -rw-r--r-- | drivers/crypto/chelsio/chcr_core.c | 311 | ||||
| -rw-r--r-- | drivers/crypto/chelsio/chcr_core.h | 139 | ||||
| -rw-r--r-- | drivers/crypto/chelsio/chcr_crypto.h | 353 |
7 files changed, 5767 insertions, 0 deletions
diff --git a/drivers/crypto/chelsio/Kconfig b/drivers/crypto/chelsio/Kconfig new file mode 100644 index 000000000..f886401af --- /dev/null +++ b/drivers/crypto/chelsio/Kconfig @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0-only +config CRYPTO_DEV_CHELSIO + tristate "Chelsio Crypto Co-processor Driver" + depends on CHELSIO_T4 + select CRYPTO_LIB_AES + select CRYPTO_SHA1 + select CRYPTO_SHA256 + select CRYPTO_SHA512 + select CRYPTO_AUTHENC + select CRYPTO_GF128MUL + help + The Chelsio Crypto Co-processor driver for T6 adapters. + + For general information about Chelsio and our products, visit + our website at <http://www.chelsio.com>. + + For customer support, please visit our customer support page at + <http://www.chelsio.com/support.html>. + + Please send feedback to <linux-bugs@chelsio.com>. + + To compile this driver as a module, choose M here: the module + will be called chcr. diff --git a/drivers/crypto/chelsio/Makefile b/drivers/crypto/chelsio/Makefile new file mode 100644 index 000000000..2e5df484a --- /dev/null +++ b/drivers/crypto/chelsio/Makefile @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0-only +ccflags-y := -I $(srctree)/drivers/net/ethernet/chelsio/cxgb4 + +obj-$(CONFIG_CRYPTO_DEV_CHELSIO) += chcr.o +chcr-objs := chcr_core.o chcr_algo.o diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c new file mode 100644 index 000000000..6933546f8 --- /dev/null +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -0,0 +1,4531 @@ +/* + * This file is part of the Chelsio T6 Crypto driver for Linux. + * + * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Written and Maintained by: + * Manoj Malviya (manojmalviya@chelsio.com) + * Atul Gupta (atul.gupta@chelsio.com) + * Jitendra Lulla (jlulla@chelsio.com) + * Yeshaswi M R Gowda (yeshaswi@chelsio.com) + * Harsh Jain (harsh@chelsio.com) + */ + +#define pr_fmt(fmt) "chcr:" fmt + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/crypto.h> +#include <linux/skbuff.h> +#include <linux/rtnetlink.h> +#include <linux/highmem.h> +#include <linux/scatterlist.h> + +#include <crypto/aes.h> +#include <crypto/algapi.h> +#include <crypto/hash.h> +#include <crypto/gcm.h> +#include <crypto/sha1.h> +#include <crypto/sha2.h> +#include <crypto/authenc.h> +#include <crypto/ctr.h> +#include <crypto/gf128mul.h> +#include <crypto/internal/aead.h> +#include <crypto/null.h> +#include <crypto/internal/skcipher.h> +#include <crypto/aead.h> +#include <crypto/scatterwalk.h> +#include <crypto/internal/hash.h> + +#include "t4fw_api.h" +#include "t4_msg.h" +#include "chcr_core.h" +#include "chcr_algo.h" +#include "chcr_crypto.h" + +#define IV AES_BLOCK_SIZE + +static unsigned int sgl_ent_len[] = { + 0, 0, 16, 24, 40, 48, 64, 72, 88, + 96, 112, 120, 136, 144, 160, 168, 184, + 192, 208, 216, 232, 240, 256, 264, 280, + 288, 304, 312, 328, 336, 352, 360, 376 +}; + +static unsigned int dsgl_ent_len[] = { + 0, 32, 32, 48, 48, 64, 64, 80, 80, + 112, 112, 128, 128, 144, 144, 160, 160, + 192, 192, 208, 208, 224, 224, 240, 240, + 272, 272, 288, 288, 304, 304, 320, 320 +}; + +static u32 round_constant[11] = { + 0x01000000, 0x02000000, 0x04000000, 0x08000000, + 0x10000000, 0x20000000, 0x40000000, 0x80000000, + 0x1B000000, 0x36000000, 0x6C000000 +}; + +static int chcr_handle_cipher_resp(struct skcipher_request *req, + unsigned char *input, int err); + +static inline struct chcr_aead_ctx *AEAD_CTX(struct chcr_context *ctx) +{ + return ctx->crypto_ctx->aeadctx; +} + +static inline struct ablk_ctx *ABLK_CTX(struct chcr_context *ctx) +{ + return ctx->crypto_ctx->ablkctx; +} + +static inline struct hmac_ctx *HMAC_CTX(struct chcr_context *ctx) +{ + return ctx->crypto_ctx->hmacctx; +} + +static inline struct chcr_gcm_ctx *GCM_CTX(struct chcr_aead_ctx *gctx) +{ + return gctx->ctx->gcm; +} + +static inline struct chcr_authenc_ctx *AUTHENC_CTX(struct chcr_aead_ctx *gctx) +{ + return gctx->ctx->authenc; +} + +static inline struct uld_ctx *ULD_CTX(struct chcr_context *ctx) +{ + return container_of(ctx->dev, struct uld_ctx, dev); +} + +static inline void chcr_init_hctx_per_wr(struct chcr_ahash_req_ctx *reqctx) +{ + memset(&reqctx->hctx_wr, 0, sizeof(struct chcr_hctx_per_wr)); +} + +static int sg_nents_xlen(struct scatterlist *sg, unsigned int reqlen, + unsigned int entlen, + unsigned int skip) +{ + int nents = 0; + unsigned int less; + unsigned int skip_len = 0; + + while (sg && skip) { + if (sg_dma_len(sg) <= skip) { + skip -= sg_dma_len(sg); + skip_len = 0; + sg = sg_next(sg); + } else { + skip_len = skip; + skip = 0; + } + } + + while (sg && reqlen) { + less = min(reqlen, sg_dma_len(sg) - skip_len); + nents += DIV_ROUND_UP(less, entlen); + reqlen -= less; + skip_len = 0; + sg = sg_next(sg); + } + return nents; +} + +static inline int get_aead_subtype(struct crypto_aead *aead) +{ + struct aead_alg *alg = crypto_aead_alg(aead); + struct chcr_alg_template *chcr_crypto_alg = + container_of(alg, struct chcr_alg_template, alg.aead); + return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK; +} + +void chcr_verify_tag(struct aead_request *req, u8 *input, int *err) +{ + u8 temp[SHA512_DIGEST_SIZE]; + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + int authsize = crypto_aead_authsize(tfm); + struct cpl_fw6_pld *fw6_pld; + int cmp = 0; + + fw6_pld = (struct cpl_fw6_pld *)input; + if ((get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) || + (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_GCM)) { + cmp = crypto_memneq(&fw6_pld->data[2], (fw6_pld + 1), authsize); + } else { + + sg_pcopy_to_buffer(req->src, sg_nents(req->src), temp, + authsize, req->assoclen + + req->cryptlen - authsize); + cmp = crypto_memneq(temp, (fw6_pld + 1), authsize); + } + if (cmp) + *err = -EBADMSG; + else + *err = 0; +} + +static int chcr_inc_wrcount(struct chcr_dev *dev) +{ + if (dev->state == CHCR_DETACH) + return 1; + atomic_inc(&dev->inflight); + return 0; +} + +static inline void chcr_dec_wrcount(struct chcr_dev *dev) +{ + atomic_dec(&dev->inflight); +} + +static inline int chcr_handle_aead_resp(struct aead_request *req, + unsigned char *input, + int err) +{ + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_dev *dev = a_ctx(tfm)->dev; + + chcr_aead_common_exit(req); + if (reqctx->verify == VERIFY_SW) { + chcr_verify_tag(req, input, &err); + reqctx->verify = VERIFY_HW; + } + chcr_dec_wrcount(dev); + req->base.complete(&req->base, err); + + return err; +} + +static void get_aes_decrypt_key(unsigned char *dec_key, + const unsigned char *key, + unsigned int keylength) +{ + u32 temp; + u32 w_ring[MAX_NK]; + int i, j, k; + u8 nr, nk; + + switch (keylength) { + case AES_KEYLENGTH_128BIT: + nk = KEYLENGTH_4BYTES; + nr = NUMBER_OF_ROUNDS_10; + break; + case AES_KEYLENGTH_192BIT: + nk = KEYLENGTH_6BYTES; + nr = NUMBER_OF_ROUNDS_12; + break; + case AES_KEYLENGTH_256BIT: + nk = KEYLENGTH_8BYTES; + nr = NUMBER_OF_ROUNDS_14; + break; + default: + return; + } + for (i = 0; i < nk; i++) + w_ring[i] = get_unaligned_be32(&key[i * 4]); + + i = 0; + temp = w_ring[nk - 1]; + while (i + nk < (nr + 1) * 4) { + if (!(i % nk)) { + /* RotWord(temp) */ + temp = (temp << 8) | (temp >> 24); + temp = aes_ks_subword(temp); + temp ^= round_constant[i / nk]; + } else if (nk == 8 && (i % 4 == 0)) { + temp = aes_ks_subword(temp); + } + w_ring[i % nk] ^= temp; + temp = w_ring[i % nk]; + i++; + } + i--; + for (k = 0, j = i % nk; k < nk; k++) { + put_unaligned_be32(w_ring[j], &dec_key[k * 4]); + j--; + if (j < 0) + j += nk; + } +} + +static struct crypto_shash *chcr_alloc_shash(unsigned int ds) +{ + struct crypto_shash *base_hash = ERR_PTR(-EINVAL); + + switch (ds) { + case SHA1_DIGEST_SIZE: + base_hash = crypto_alloc_shash("sha1", 0, 0); + break; + case SHA224_DIGEST_SIZE: + base_hash = crypto_alloc_shash("sha224", 0, 0); + break; + case SHA256_DIGEST_SIZE: + base_hash = crypto_alloc_shash("sha256", 0, 0); + break; + case SHA384_DIGEST_SIZE: + base_hash = crypto_alloc_shash("sha384", 0, 0); + break; + case SHA512_DIGEST_SIZE: + base_hash = crypto_alloc_shash("sha512", 0, 0); + break; + } + + return base_hash; +} + +static int chcr_compute_partial_hash(struct shash_desc *desc, + char *iopad, char *result_hash, + int digest_size) +{ + struct sha1_state sha1_st; + struct sha256_state sha256_st; + struct sha512_state sha512_st; + int error; + + if (digest_size == SHA1_DIGEST_SIZE) { + error = crypto_shash_init(desc) ?: + crypto_shash_update(desc, iopad, SHA1_BLOCK_SIZE) ?: + crypto_shash_export(desc, (void *)&sha1_st); + memcpy(result_hash, sha1_st.state, SHA1_DIGEST_SIZE); + } else if (digest_size == SHA224_DIGEST_SIZE) { + error = crypto_shash_init(desc) ?: + crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?: + crypto_shash_export(desc, (void *)&sha256_st); + memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE); + + } else if (digest_size == SHA256_DIGEST_SIZE) { + error = crypto_shash_init(desc) ?: + crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?: + crypto_shash_export(desc, (void *)&sha256_st); + memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE); + + } else if (digest_size == SHA384_DIGEST_SIZE) { + error = crypto_shash_init(desc) ?: + crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?: + crypto_shash_export(desc, (void *)&sha512_st); + memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE); + + } else if (digest_size == SHA512_DIGEST_SIZE) { + error = crypto_shash_init(desc) ?: + crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?: + crypto_shash_export(desc, (void *)&sha512_st); + memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE); + } else { + error = -EINVAL; + pr_err("Unknown digest size %d\n", digest_size); + } + return error; +} + +static void chcr_change_order(char *buf, int ds) +{ + int i; + + if (ds == SHA512_DIGEST_SIZE) { + for (i = 0; i < (ds / sizeof(u64)); i++) + *((__be64 *)buf + i) = + cpu_to_be64(*((u64 *)buf + i)); + } else { + for (i = 0; i < (ds / sizeof(u32)); i++) + *((__be32 *)buf + i) = + cpu_to_be32(*((u32 *)buf + i)); + } +} + +static inline int is_hmac(struct crypto_tfm *tfm) +{ + struct crypto_alg *alg = tfm->__crt_alg; + struct chcr_alg_template *chcr_crypto_alg = + container_of(__crypto_ahash_alg(alg), struct chcr_alg_template, + alg.hash); + if (chcr_crypto_alg->type == CRYPTO_ALG_TYPE_HMAC) + return 1; + return 0; +} + +static inline void dsgl_walk_init(struct dsgl_walk *walk, + struct cpl_rx_phys_dsgl *dsgl) +{ + walk->dsgl = dsgl; + walk->nents = 0; + walk->to = (struct phys_sge_pairs *)(dsgl + 1); +} + +static inline void dsgl_walk_end(struct dsgl_walk *walk, unsigned short qid, + int pci_chan_id) +{ + struct cpl_rx_phys_dsgl *phys_cpl; + + phys_cpl = walk->dsgl; + + phys_cpl->op_to_tid = htonl(CPL_RX_PHYS_DSGL_OPCODE_V(CPL_RX_PHYS_DSGL) + | CPL_RX_PHYS_DSGL_ISRDMA_V(0)); + phys_cpl->pcirlxorder_to_noofsgentr = + htonl(CPL_RX_PHYS_DSGL_PCIRLXORDER_V(0) | + CPL_RX_PHYS_DSGL_PCINOSNOOP_V(0) | + CPL_RX_PHYS_DSGL_PCITPHNTENB_V(0) | + CPL_RX_PHYS_DSGL_PCITPHNT_V(0) | + CPL_RX_PHYS_DSGL_DCAID_V(0) | + CPL_RX_PHYS_DSGL_NOOFSGENTR_V(walk->nents)); + phys_cpl->rss_hdr_int.opcode = CPL_RX_PHYS_ADDR; + phys_cpl->rss_hdr_int.qid = htons(qid); + phys_cpl->rss_hdr_int.hash_val = 0; + phys_cpl->rss_hdr_int.channel = pci_chan_id; +} + +static inline void dsgl_walk_add_page(struct dsgl_walk *walk, + size_t size, + dma_addr_t addr) +{ + int j; + + if (!size) + return; + j = walk->nents; + walk->to->len[j % 8] = htons(size); + walk->to->addr[j % 8] = cpu_to_be64(addr); + j++; + if ((j % 8) == 0) + walk->to++; + walk->nents = j; +} + +static void dsgl_walk_add_sg(struct dsgl_walk *walk, + struct scatterlist *sg, + unsigned int slen, + unsigned int skip) +{ + int skip_len = 0; + unsigned int left_size = slen, len = 0; + unsigned int j = walk->nents; + int offset, ent_len; + + if (!slen) + return; + while (sg && skip) { + if (sg_dma_len(sg) <= skip) { + skip -= sg_dma_len(sg); + skip_len = 0; + sg = sg_next(sg); + } else { + skip_len = skip; + skip = 0; + } + } + + while (left_size && sg) { + len = min_t(u32, left_size, sg_dma_len(sg) - skip_len); + offset = 0; + while (len) { + ent_len = min_t(u32, len, CHCR_DST_SG_SIZE); + walk->to->len[j % 8] = htons(ent_len); + walk->to->addr[j % 8] = cpu_to_be64(sg_dma_address(sg) + + offset + skip_len); + offset += ent_len; + len -= ent_len; + j++; + if ((j % 8) == 0) + walk->to++; + } + walk->last_sg = sg; + walk->last_sg_len = min_t(u32, left_size, sg_dma_len(sg) - + skip_len) + skip_len; + left_size -= min_t(u32, left_size, sg_dma_len(sg) - skip_len); + skip_len = 0; + sg = sg_next(sg); + } + walk->nents = j; +} + +static inline void ulptx_walk_init(struct ulptx_walk *walk, + struct ulptx_sgl *ulp) +{ + walk->sgl = ulp; + walk->nents = 0; + walk->pair_idx = 0; + walk->pair = ulp->sge; + walk->last_sg = NULL; + walk->last_sg_len = 0; +} + +static inline void ulptx_walk_end(struct ulptx_walk *walk) +{ + walk->sgl->cmd_nsge = htonl(ULPTX_CMD_V(ULP_TX_SC_DSGL) | + ULPTX_NSGE_V(walk->nents)); +} + + +static inline void ulptx_walk_add_page(struct ulptx_walk *walk, + size_t size, + dma_addr_t addr) +{ + if (!size) + return; + + if (walk->nents == 0) { + walk->sgl->len0 = cpu_to_be32(size); + walk->sgl->addr0 = cpu_to_be64(addr); + } else { + walk->pair->addr[walk->pair_idx] = cpu_to_be64(addr); + walk->pair->len[walk->pair_idx] = cpu_to_be32(size); + walk->pair_idx = !walk->pair_idx; + if (!walk->pair_idx) + walk->pair++; + } + walk->nents++; +} + +static void ulptx_walk_add_sg(struct ulptx_walk *walk, + struct scatterlist *sg, + unsigned int len, + unsigned int skip) +{ + int small; + int skip_len = 0; + unsigned int sgmin; + + if (!len) + return; + while (sg && skip) { + if (sg_dma_len(sg) <= skip) { + skip -= sg_dma_len(sg); + skip_len = 0; + sg = sg_next(sg); + } else { + skip_len = skip; + skip = 0; + } + } + WARN(!sg, "SG should not be null here\n"); + if (sg && (walk->nents == 0)) { + small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len); + sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE); + walk->sgl->len0 = cpu_to_be32(sgmin); + walk->sgl->addr0 = cpu_to_be64(sg_dma_address(sg) + skip_len); + walk->nents++; + len -= sgmin; + walk->last_sg = sg; + walk->last_sg_len = sgmin + skip_len; + skip_len += sgmin; + if (sg_dma_len(sg) == skip_len) { + sg = sg_next(sg); + skip_len = 0; + } + } + + while (sg && len) { + small = min(sg_dma_len(sg) - skip_len, len); + sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE); + walk->pair->len[walk->pair_idx] = cpu_to_be32(sgmin); + walk->pair->addr[walk->pair_idx] = + cpu_to_be64(sg_dma_address(sg) + skip_len); + walk->pair_idx = !walk->pair_idx; + walk->nents++; + if (!walk->pair_idx) + walk->pair++; + len -= sgmin; + skip_len += sgmin; + walk->last_sg = sg; + walk->last_sg_len = skip_len; + if (sg_dma_len(sg) == skip_len) { + sg = sg_next(sg); + skip_len = 0; + } + } +} + +static inline int get_cryptoalg_subtype(struct crypto_skcipher *tfm) +{ + struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + struct chcr_alg_template *chcr_crypto_alg = + container_of(alg, struct chcr_alg_template, alg.skcipher); + + return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK; +} + +static int cxgb4_is_crypto_q_full(struct net_device *dev, unsigned int idx) +{ + struct adapter *adap = netdev2adap(dev); + struct sge_uld_txq_info *txq_info = + adap->sge.uld_txq_info[CXGB4_TX_CRYPTO]; + struct sge_uld_txq *txq; + int ret = 0; + + local_bh_disable(); + txq = &txq_info->uldtxq[idx]; + spin_lock(&txq->sendq.lock); + if (txq->full) + ret = -1; + spin_unlock(&txq->sendq.lock); + local_bh_enable(); + return ret; +} + +static int generate_copy_rrkey(struct ablk_ctx *ablkctx, + struct _key_ctx *key_ctx) +{ + if (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) { + memcpy(key_ctx->key, ablkctx->rrkey, ablkctx->enckey_len); + } else { + memcpy(key_ctx->key, + ablkctx->key + (ablkctx->enckey_len >> 1), + ablkctx->enckey_len >> 1); + memcpy(key_ctx->key + (ablkctx->enckey_len >> 1), + ablkctx->rrkey, ablkctx->enckey_len >> 1); + } + return 0; +} + +static int chcr_hash_ent_in_wr(struct scatterlist *src, + unsigned int minsg, + unsigned int space, + unsigned int srcskip) +{ + int srclen = 0; + int srcsg = minsg; + int soffset = 0, sless; + + if (sg_dma_len(src) == srcskip) { + src = sg_next(src); + srcskip = 0; + } + while (src && space > (sgl_ent_len[srcsg + 1])) { + sless = min_t(unsigned int, sg_dma_len(src) - soffset - srcskip, + CHCR_SRC_SG_SIZE); + srclen += sless; + soffset += sless; + srcsg++; + if (sg_dma_len(src) == (soffset + srcskip)) { + src = sg_next(src); + soffset = 0; + srcskip = 0; + } + } + return srclen; +} + +static int chcr_sg_ent_in_wr(struct scatterlist *src, + struct scatterlist *dst, + unsigned int minsg, + unsigned int space, + unsigned int srcskip, + unsigned int dstskip) +{ + int srclen = 0, dstlen = 0; + int srcsg = minsg, dstsg = minsg; + int offset = 0, soffset = 0, less, sless = 0; + + if (sg_dma_len(src) == srcskip) { + src = sg_next(src); + srcskip = 0; + } + if (sg_dma_len(dst) == dstskip) { + dst = sg_next(dst); + dstskip = 0; + } + + while (src && dst && + space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) { + sless = min_t(unsigned int, sg_dma_len(src) - srcskip - soffset, + CHCR_SRC_SG_SIZE); + srclen += sless; + srcsg++; + offset = 0; + while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) && + space > (sgl_ent_len[srcsg] + dsgl_ent_len[dstsg + 1])) { + if (srclen <= dstlen) + break; + less = min_t(unsigned int, sg_dma_len(dst) - offset - + dstskip, CHCR_DST_SG_SIZE); + dstlen += less; + offset += less; + if ((offset + dstskip) == sg_dma_len(dst)) { + dst = sg_next(dst); + offset = 0; + } + dstsg++; + dstskip = 0; + } + soffset += sless; + if ((soffset + srcskip) == sg_dma_len(src)) { + src = sg_next(src); + srcskip = 0; + soffset = 0; + } + + } + return min(srclen, dstlen); +} + +static int chcr_cipher_fallback(struct crypto_skcipher *cipher, + struct skcipher_request *req, + u8 *iv, + unsigned short op_type) +{ + struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req); + int err; + + skcipher_request_set_tfm(&reqctx->fallback_req, cipher); + skcipher_request_set_callback(&reqctx->fallback_req, req->base.flags, + req->base.complete, req->base.data); + skcipher_request_set_crypt(&reqctx->fallback_req, req->src, req->dst, + req->cryptlen, iv); + + err = op_type ? crypto_skcipher_decrypt(&reqctx->fallback_req) : + crypto_skcipher_encrypt(&reqctx->fallback_req); + + return err; + +} + +static inline int get_qidxs(struct crypto_async_request *req, + unsigned int *txqidx, unsigned int *rxqidx) +{ + struct crypto_tfm *tfm = req->tfm; + int ret = 0; + + switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) { + case CRYPTO_ALG_TYPE_AEAD: + { + struct aead_request *aead_req = + container_of(req, struct aead_request, base); + struct chcr_aead_reqctx *reqctx = aead_request_ctx(aead_req); + *txqidx = reqctx->txqidx; + *rxqidx = reqctx->rxqidx; + break; + } + case CRYPTO_ALG_TYPE_SKCIPHER: + { + struct skcipher_request *sk_req = + container_of(req, struct skcipher_request, base); + struct chcr_skcipher_req_ctx *reqctx = + skcipher_request_ctx(sk_req); + *txqidx = reqctx->txqidx; + *rxqidx = reqctx->rxqidx; + break; + } + case CRYPTO_ALG_TYPE_AHASH: + { + struct ahash_request *ahash_req = + container_of(req, struct ahash_request, base); + struct chcr_ahash_req_ctx *reqctx = + ahash_request_ctx(ahash_req); + *txqidx = reqctx->txqidx; + *rxqidx = reqctx->rxqidx; + break; + } + default: + ret = -EINVAL; + /* should never get here */ + BUG(); + break; + } + return ret; +} + +static inline void create_wreq(struct chcr_context *ctx, + struct chcr_wr *chcr_req, + struct crypto_async_request *req, + unsigned int imm, + int hash_sz, + unsigned int len16, + unsigned int sc_len, + unsigned int lcb) +{ + struct uld_ctx *u_ctx = ULD_CTX(ctx); + unsigned int tx_channel_id, rx_channel_id; + unsigned int txqidx = 0, rxqidx = 0; + unsigned int qid, fid, portno; + + get_qidxs(req, &txqidx, &rxqidx); + qid = u_ctx->lldi.rxq_ids[rxqidx]; + fid = u_ctx->lldi.rxq_ids[0]; + portno = rxqidx / ctx->rxq_perchan; + tx_channel_id = txqidx / ctx->txq_perchan; + rx_channel_id = cxgb4_port_e2cchan(u_ctx->lldi.ports[portno]); + + + chcr_req->wreq.op_to_cctx_size = FILL_WR_OP_CCTX_SIZE; + chcr_req->wreq.pld_size_hash_size = + htonl(FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(hash_sz)); + chcr_req->wreq.len16_pkd = + htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(len16, 16))); + chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req); + chcr_req->wreq.rx_chid_to_rx_q_id = FILL_WR_RX_Q_ID(rx_channel_id, qid, + !!lcb, txqidx); + + chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(tx_channel_id, fid); + chcr_req->ulptx.len = htonl((DIV_ROUND_UP(len16, 16) - + ((sizeof(chcr_req->wreq)) >> 4))); + chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(!imm); + chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) + + sizeof(chcr_req->key_ctx) + sc_len); +} + +/** + * create_cipher_wr - form the WR for cipher operations + * @wrparam: Container for create_cipher_wr()'s parameters + */ +static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(wrparam->req); + struct chcr_context *ctx = c_ctx(tfm); + struct uld_ctx *u_ctx = ULD_CTX(ctx); + struct ablk_ctx *ablkctx = ABLK_CTX(ctx); + struct sk_buff *skb = NULL; + struct chcr_wr *chcr_req; + struct cpl_rx_phys_dsgl *phys_cpl; + struct ulptx_sgl *ulptx; + struct chcr_skcipher_req_ctx *reqctx = + skcipher_request_ctx(wrparam->req); + unsigned int temp = 0, transhdr_len, dst_size; + int error; + int nents; + unsigned int kctx_len; + gfp_t flags = wrparam->req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? + GFP_KERNEL : GFP_ATOMIC; + struct adapter *adap = padap(ctx->dev); + unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan; + + rx_channel_id = cxgb4_port_e2cchan(u_ctx->lldi.ports[rx_channel_id]); + nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE, + reqctx->dst_ofst); + dst_size = get_space_for_phys_dsgl(nents); + kctx_len = roundup(ablkctx->enckey_len, 16); + transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); + nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes, + CHCR_SRC_SG_SIZE, reqctx->src_ofst); + temp = reqctx->imm ? roundup(wrparam->bytes, 16) : + (sgl_len(nents) * 8); + transhdr_len += temp; + transhdr_len = roundup(transhdr_len, 16); + skb = alloc_skb(SGE_MAX_WR_LEN, flags); + if (!skb) { + error = -ENOMEM; + goto err; + } + chcr_req = __skb_put_zero(skb, transhdr_len); + chcr_req->sec_cpl.op_ivinsrtofst = + FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 1); + + chcr_req->sec_cpl.pldlen = htonl(IV + wrparam->bytes); + chcr_req->sec_cpl.aadstart_cipherstop_hi = + FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, IV + 1, 0); + + chcr_req->sec_cpl.cipherstop_lo_authinsert = + FILL_SEC_CPL_AUTHINSERT(0, 0, 0, 0); + chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 0, + ablkctx->ciph_mode, + 0, 0, IV >> 1); + chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0, + 0, 1, dst_size); + + chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr; + if ((reqctx->op == CHCR_DECRYPT_OP) && + (!(get_cryptoalg_subtype(tfm) == + CRYPTO_ALG_SUB_TYPE_CTR)) && + (!(get_cryptoalg_subtype(tfm) == + CRYPTO_ALG_SUB_TYPE_CTR_RFC3686))) { + generate_copy_rrkey(ablkctx, &chcr_req->key_ctx); + } else { + if ((ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) || + (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CTR)) { + memcpy(chcr_req->key_ctx.key, ablkctx->key, + ablkctx->enckey_len); + } else { + memcpy(chcr_req->key_ctx.key, ablkctx->key + + (ablkctx->enckey_len >> 1), + ablkctx->enckey_len >> 1); + memcpy(chcr_req->key_ctx.key + + (ablkctx->enckey_len >> 1), + ablkctx->key, + ablkctx->enckey_len >> 1); + } + } + phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); + ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size); + chcr_add_cipher_src_ent(wrparam->req, ulptx, wrparam); + chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid); + + atomic_inc(&adap->chcr_stats.cipher_rqst); + temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len + IV + + (reqctx->imm ? (wrparam->bytes) : 0); + create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0, + transhdr_len, temp, + ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC); + reqctx->skb = skb; + + if (reqctx->op && (ablkctx->ciph_mode == + CHCR_SCMD_CIPHER_MODE_AES_CBC)) + sg_pcopy_to_buffer(wrparam->req->src, + sg_nents(wrparam->req->src), wrparam->req->iv, 16, + reqctx->processed + wrparam->bytes - AES_BLOCK_SIZE); + + return skb; +err: + return ERR_PTR(error); +} + +static inline int chcr_keyctx_ck_size(unsigned int keylen) +{ + int ck_size = 0; + + if (keylen == AES_KEYSIZE_128) + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; + else if (keylen == AES_KEYSIZE_192) + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; + else if (keylen == AES_KEYSIZE_256) + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; + else + ck_size = 0; + + return ck_size; +} +static int chcr_cipher_fallback_setkey(struct crypto_skcipher *cipher, + const u8 *key, + unsigned int keylen) +{ + struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); + + crypto_skcipher_clear_flags(ablkctx->sw_cipher, + CRYPTO_TFM_REQ_MASK); + crypto_skcipher_set_flags(ablkctx->sw_cipher, + cipher->base.crt_flags & CRYPTO_TFM_REQ_MASK); + return crypto_skcipher_setkey(ablkctx->sw_cipher, key, keylen); +} + +static int chcr_aes_cbc_setkey(struct crypto_skcipher *cipher, + const u8 *key, + unsigned int keylen) +{ + struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); + unsigned int ck_size, context_size; + u16 alignment = 0; + int err; + + err = chcr_cipher_fallback_setkey(cipher, key, keylen); + if (err) + goto badkey_err; + + ck_size = chcr_keyctx_ck_size(keylen); + alignment = ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192 ? 8 : 0; + memcpy(ablkctx->key, key, keylen); + ablkctx->enckey_len = keylen; + get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, keylen << 3); + context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + + keylen + alignment) >> 4; + + ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, + 0, 0, context_size); + ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CBC; + return 0; +badkey_err: + ablkctx->enckey_len = 0; + + return err; +} + +static int chcr_aes_ctr_setkey(struct crypto_skcipher *cipher, + const u8 *key, + unsigned int keylen) +{ + struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); + unsigned int ck_size, context_size; + u16 alignment = 0; + int err; + + err = chcr_cipher_fallback_setkey(cipher, key, keylen); + if (err) + goto badkey_err; + ck_size = chcr_keyctx_ck_size(keylen); + alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0; + memcpy(ablkctx->key, key, keylen); + ablkctx->enckey_len = keylen; + context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + + keylen + alignment) >> 4; + + ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, + 0, 0, context_size); + ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR; + + return 0; +badkey_err: + ablkctx->enckey_len = 0; + + return err; +} + +static int chcr_aes_rfc3686_setkey(struct crypto_skcipher *cipher, + const u8 *key, + unsigned int keylen) +{ + struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); + unsigned int ck_size, context_size; + u16 alignment = 0; + int err; + + if (keylen < CTR_RFC3686_NONCE_SIZE) + return -EINVAL; + memcpy(ablkctx->nonce, key + (keylen - CTR_RFC3686_NONCE_SIZE), + CTR_RFC3686_NONCE_SIZE); + + keylen -= CTR_RFC3686_NONCE_SIZE; + err = chcr_cipher_fallback_setkey(cipher, key, keylen); + if (err) + goto badkey_err; + + ck_size = chcr_keyctx_ck_size(keylen); + alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0; + memcpy(ablkctx->key, key, keylen); + ablkctx->enckey_len = keylen; + context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + + keylen + alignment) >> 4; + + ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, + 0, 0, context_size); + ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR; + + return 0; +badkey_err: + ablkctx->enckey_len = 0; + + return err; +} +static void ctr_add_iv(u8 *dstiv, u8 *srciv, u32 add) +{ + unsigned int size = AES_BLOCK_SIZE; + __be32 *b = (__be32 *)(dstiv + size); + u32 c, prev; + + memcpy(dstiv, srciv, AES_BLOCK_SIZE); + for (; size >= 4; size -= 4) { + prev = be32_to_cpu(*--b); + c = prev + add; + *b = cpu_to_be32(c); + if (prev < c) + break; + add = 1; + } + +} + +static unsigned int adjust_ctr_overflow(u8 *iv, u32 bytes) +{ + __be32 *b = (__be32 *)(iv + AES_BLOCK_SIZE); + u64 c; + u32 temp = be32_to_cpu(*--b); + + temp = ~temp; + c = (u64)temp + 1; // No of block can processed without overflow + if ((bytes / AES_BLOCK_SIZE) >= c) + bytes = c * AES_BLOCK_SIZE; + return bytes; +} + +static int chcr_update_tweak(struct skcipher_request *req, u8 *iv, + u32 isfinal) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); + struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req); + struct crypto_aes_ctx aes; + int ret, i; + u8 *key; + unsigned int keylen; + int round = reqctx->last_req_len / AES_BLOCK_SIZE; + int round8 = round / 8; + + memcpy(iv, reqctx->iv, AES_BLOCK_SIZE); + + keylen = ablkctx->enckey_len / 2; + key = ablkctx->key + keylen; + /* For a 192 bit key remove the padded zeroes which was + * added in chcr_xts_setkey + */ + if (KEY_CONTEXT_CK_SIZE_G(ntohl(ablkctx->key_ctx_hdr)) + == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) + ret = aes_expandkey(&aes, key, keylen - 8); + else + ret = aes_expandkey(&aes, key, keylen); + if (ret) + return ret; + aes_encrypt(&aes, iv, iv); + for (i = 0; i < round8; i++) + gf128mul_x8_ble((le128 *)iv, (le128 *)iv); + + for (i = 0; i < (round % 8); i++) + gf128mul_x_ble((le128 *)iv, (le128 *)iv); + + if (!isfinal) + aes_decrypt(&aes, iv, iv); + + memzero_explicit(&aes, sizeof(aes)); + return 0; +} + +static int chcr_update_cipher_iv(struct skcipher_request *req, + struct cpl_fw6_pld *fw6_pld, u8 *iv) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req); + int subtype = get_cryptoalg_subtype(tfm); + int ret = 0; + + if (subtype == CRYPTO_ALG_SUB_TYPE_CTR) + ctr_add_iv(iv, req->iv, (reqctx->processed / + AES_BLOCK_SIZE)); + else if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) + *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE + + CTR_RFC3686_IV_SIZE) = cpu_to_be32((reqctx->processed / + AES_BLOCK_SIZE) + 1); + else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS) + ret = chcr_update_tweak(req, iv, 0); + else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) { + if (reqctx->op) + /*Updated before sending last WR*/ + memcpy(iv, req->iv, AES_BLOCK_SIZE); + else + memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE); + } + + return ret; + +} + +/* We need separate function for final iv because in rfc3686 Initial counter + * starts from 1 and buffer size of iv is 8 byte only which remains constant + * for subsequent update requests + */ + +static int chcr_final_cipher_iv(struct skcipher_request *req, + struct cpl_fw6_pld *fw6_pld, u8 *iv) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req); + int subtype = get_cryptoalg_subtype(tfm); + int ret = 0; + + if (subtype == CRYPTO_ALG_SUB_TYPE_CTR) + ctr_add_iv(iv, req->iv, DIV_ROUND_UP(reqctx->processed, + AES_BLOCK_SIZE)); + else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS) { + if (!reqctx->partial_req) + memcpy(iv, reqctx->iv, AES_BLOCK_SIZE); + else + ret = chcr_update_tweak(req, iv, 1); + } + else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) { + /*Already updated for Decrypt*/ + if (!reqctx->op) + memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE); + + } + return ret; + +} + +static int chcr_handle_cipher_resp(struct skcipher_request *req, + unsigned char *input, int err) +{ + struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req); + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + struct cpl_fw6_pld *fw6_pld = (struct cpl_fw6_pld *)input; + struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); + struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm)); + struct chcr_dev *dev = c_ctx(tfm)->dev; + struct chcr_context *ctx = c_ctx(tfm); + struct adapter *adap = padap(ctx->dev); + struct cipher_wr_param wrparam; + struct sk_buff *skb; + int bytes; + + if (err) + goto unmap; + if (req->cryptlen == reqctx->processed) { + chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, + req); + err = chcr_final_cipher_iv(req, fw6_pld, req->iv); + goto complete; + } + + if (!reqctx->imm) { + bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 0, + CIP_SPACE_LEFT(ablkctx->enckey_len), + reqctx->src_ofst, reqctx->dst_ofst); + if ((bytes + reqctx->processed) >= req->cryptlen) + bytes = req->cryptlen - reqctx->processed; + else + bytes = rounddown(bytes, 16); + } else { + /*CTR mode counter overfloa*/ + bytes = req->cryptlen - reqctx->processed; + } + err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv); + if (err) + goto unmap; + + if (unlikely(bytes == 0)) { + chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, + req); + memcpy(req->iv, reqctx->init_iv, IV); + atomic_inc(&adap->chcr_stats.fallback); + err = chcr_cipher_fallback(ablkctx->sw_cipher, req, req->iv, + reqctx->op); + goto complete; + } + + if (get_cryptoalg_subtype(tfm) == + CRYPTO_ALG_SUB_TYPE_CTR) + bytes = adjust_ctr_overflow(reqctx->iv, bytes); + wrparam.qid = u_ctx->lldi.rxq_ids[reqctx->rxqidx]; + wrparam.req = req; + wrparam.bytes = bytes; + skb = create_cipher_wr(&wrparam); + if (IS_ERR(skb)) { + pr_err("%s : Failed to form WR. No memory\n", __func__); + err = PTR_ERR(skb); + goto unmap; + } + skb->dev = u_ctx->lldi.ports[0]; + set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx); + chcr_send_wr(skb); + reqctx->last_req_len = bytes; + reqctx->processed += bytes; + if (get_cryptoalg_subtype(tfm) == + CRYPTO_ALG_SUB_TYPE_CBC && req->base.flags == + CRYPTO_TFM_REQ_MAY_SLEEP ) { + complete(&ctx->cbc_aes_aio_done); + } + return 0; +unmap: + chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req); +complete: + if (get_cryptoalg_subtype(tfm) == + CRYPTO_ALG_SUB_TYPE_CBC && req->base.flags == + CRYPTO_TFM_REQ_MAY_SLEEP ) { + complete(&ctx->cbc_aes_aio_done); + } + chcr_dec_wrcount(dev); + req->base.complete(&req->base, err); + return err; +} + +static int process_cipher(struct skcipher_request *req, + unsigned short qid, + struct sk_buff **skb, + unsigned short op_type) +{ + struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req); + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + unsigned int ivsize = crypto_skcipher_ivsize(tfm); + struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); + struct adapter *adap = padap(c_ctx(tfm)->dev); + struct cipher_wr_param wrparam; + int bytes, err = -EINVAL; + int subtype; + + reqctx->processed = 0; + reqctx->partial_req = 0; + if (!req->iv) + goto error; + subtype = get_cryptoalg_subtype(tfm); + if ((ablkctx->enckey_len == 0) || (ivsize > AES_BLOCK_SIZE) || + (req->cryptlen == 0) || + (req->cryptlen % crypto_skcipher_blocksize(tfm))) { + if (req->cryptlen == 0 && subtype != CRYPTO_ALG_SUB_TYPE_XTS) + goto fallback; + else if (req->cryptlen % crypto_skcipher_blocksize(tfm) && + subtype == CRYPTO_ALG_SUB_TYPE_XTS) + goto fallback; + pr_err("AES: Invalid value of Key Len %d nbytes %d IV Len %d\n", + ablkctx->enckey_len, req->cryptlen, ivsize); + goto error; + } + + err = chcr_cipher_dma_map(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req); + if (err) + goto error; + if (req->cryptlen < (SGE_MAX_WR_LEN - (sizeof(struct chcr_wr) + + AES_MIN_KEY_SIZE + + sizeof(struct cpl_rx_phys_dsgl) + + /*Min dsgl size*/ + 32))) { + /* Can be sent as Imm*/ + unsigned int dnents = 0, transhdr_len, phys_dsgl, kctx_len; + + dnents = sg_nents_xlen(req->dst, req->cryptlen, + CHCR_DST_SG_SIZE, 0); + phys_dsgl = get_space_for_phys_dsgl(dnents); + kctx_len = roundup(ablkctx->enckey_len, 16); + transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl); + reqctx->imm = (transhdr_len + IV + req->cryptlen) <= + SGE_MAX_WR_LEN; + bytes = IV + req->cryptlen; + + } else { + reqctx->imm = 0; + } + + if (!reqctx->imm) { + bytes = chcr_sg_ent_in_wr(req->src, req->dst, 0, + CIP_SPACE_LEFT(ablkctx->enckey_len), + 0, 0); + if ((bytes + reqctx->processed) >= req->cryptlen) + bytes = req->cryptlen - reqctx->processed; + else + bytes = rounddown(bytes, 16); + } else { + bytes = req->cryptlen; + } + if (subtype == CRYPTO_ALG_SUB_TYPE_CTR) { + bytes = adjust_ctr_overflow(req->iv, bytes); + } + if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) { + memcpy(reqctx->iv, ablkctx->nonce, CTR_RFC3686_NONCE_SIZE); + memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->iv, + CTR_RFC3686_IV_SIZE); + + /* initialize counter portion of counter block */ + *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE + + CTR_RFC3686_IV_SIZE) = cpu_to_be32(1); + memcpy(reqctx->init_iv, reqctx->iv, IV); + + } else { + + memcpy(reqctx->iv, req->iv, IV); + memcpy(reqctx->init_iv, req->iv, IV); + } + if (unlikely(bytes == 0)) { + chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, + req); +fallback: atomic_inc(&adap->chcr_stats.fallback); + err = chcr_cipher_fallback(ablkctx->sw_cipher, req, + subtype == + CRYPTO_ALG_SUB_TYPE_CTR_RFC3686 ? + reqctx->iv : req->iv, + op_type); + goto error; + } + reqctx->op = op_type; + reqctx->srcsg = req->src; + reqctx->dstsg = req->dst; + reqctx->src_ofst = 0; + reqctx->dst_ofst = 0; + wrparam.qid = qid; + wrparam.req = req; + wrparam.bytes = bytes; + *skb = create_cipher_wr(&wrparam); + if (IS_ERR(*skb)) { + err = PTR_ERR(*skb); + goto unmap; + } + reqctx->processed = bytes; + reqctx->last_req_len = bytes; + reqctx->partial_req = !!(req->cryptlen - reqctx->processed); + + return 0; +unmap: + chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req); +error: + return err; +} + +static int chcr_aes_encrypt(struct skcipher_request *req) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req); + struct chcr_dev *dev = c_ctx(tfm)->dev; + struct sk_buff *skb = NULL; + int err; + struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm)); + struct chcr_context *ctx = c_ctx(tfm); + unsigned int cpu; + + cpu = get_cpu(); + reqctx->txqidx = cpu % ctx->ntxq; + reqctx->rxqidx = cpu % ctx->nrxq; + put_cpu(); + + err = chcr_inc_wrcount(dev); + if (err) + return -ENXIO; + if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], + reqctx->txqidx) && + (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) { + err = -ENOSPC; + goto error; + } + + err = process_cipher(req, u_ctx->lldi.rxq_ids[reqctx->rxqidx], + &skb, CHCR_ENCRYPT_OP); + if (err || !skb) + return err; + skb->dev = u_ctx->lldi.ports[0]; + set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx); + chcr_send_wr(skb); + if (get_cryptoalg_subtype(tfm) == + CRYPTO_ALG_SUB_TYPE_CBC && req->base.flags == + CRYPTO_TFM_REQ_MAY_SLEEP ) { + reqctx->partial_req = 1; + wait_for_completion(&ctx->cbc_aes_aio_done); + } + return -EINPROGRESS; +error: + chcr_dec_wrcount(dev); + return err; +} + +static int chcr_aes_decrypt(struct skcipher_request *req) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req); + struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm)); + struct chcr_dev *dev = c_ctx(tfm)->dev; + struct sk_buff *skb = NULL; + int err; + struct chcr_context *ctx = c_ctx(tfm); + unsigned int cpu; + + cpu = get_cpu(); + reqctx->txqidx = cpu % ctx->ntxq; + reqctx->rxqidx = cpu % ctx->nrxq; + put_cpu(); + + err = chcr_inc_wrcount(dev); + if (err) + return -ENXIO; + + if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], + reqctx->txqidx) && + (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) + return -ENOSPC; + err = process_cipher(req, u_ctx->lldi.rxq_ids[reqctx->rxqidx], + &skb, CHCR_DECRYPT_OP); + if (err || !skb) + return err; + skb->dev = u_ctx->lldi.ports[0]; + set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx); + chcr_send_wr(skb); + return -EINPROGRESS; +} +static int chcr_device_init(struct chcr_context *ctx) +{ + struct uld_ctx *u_ctx = NULL; + int txq_perchan, ntxq; + int err = 0, rxq_perchan; + + if (!ctx->dev) { + u_ctx = assign_chcr_device(); + if (!u_ctx) { + err = -ENXIO; + pr_err("chcr device assignment fails\n"); + goto out; + } + ctx->dev = &u_ctx->dev; + ntxq = u_ctx->lldi.ntxq; + rxq_perchan = u_ctx->lldi.nrxq / u_ctx->lldi.nchan; + txq_perchan = ntxq / u_ctx->lldi.nchan; + ctx->ntxq = ntxq; + ctx->nrxq = u_ctx->lldi.nrxq; + ctx->rxq_perchan = rxq_perchan; + ctx->txq_perchan = txq_perchan; + } +out: + return err; +} + +static int chcr_init_tfm(struct crypto_skcipher *tfm) +{ + struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + struct chcr_context *ctx = crypto_skcipher_ctx(tfm); + struct ablk_ctx *ablkctx = ABLK_CTX(ctx); + + ablkctx->sw_cipher = crypto_alloc_skcipher(alg->base.cra_name, 0, + CRYPTO_ALG_NEED_FALLBACK); + if (IS_ERR(ablkctx->sw_cipher)) { + pr_err("failed to allocate fallback for %s\n", alg->base.cra_name); + return PTR_ERR(ablkctx->sw_cipher); + } + init_completion(&ctx->cbc_aes_aio_done); + crypto_skcipher_set_reqsize(tfm, sizeof(struct chcr_skcipher_req_ctx) + + crypto_skcipher_reqsize(ablkctx->sw_cipher)); + + return chcr_device_init(ctx); +} + +static int chcr_rfc3686_init(struct crypto_skcipher *tfm) +{ + struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + struct chcr_context *ctx = crypto_skcipher_ctx(tfm); + struct ablk_ctx *ablkctx = ABLK_CTX(ctx); + + /*RFC3686 initialises IV counter value to 1, rfc3686(ctr(aes)) + * cannot be used as fallback in chcr_handle_cipher_response + */ + ablkctx->sw_cipher = crypto_alloc_skcipher("ctr(aes)", 0, + CRYPTO_ALG_NEED_FALLBACK); + if (IS_ERR(ablkctx->sw_cipher)) { + pr_err("failed to allocate fallback for %s\n", alg->base.cra_name); + return PTR_ERR(ablkctx->sw_cipher); + } + crypto_skcipher_set_reqsize(tfm, sizeof(struct chcr_skcipher_req_ctx) + + crypto_skcipher_reqsize(ablkctx->sw_cipher)); + return chcr_device_init(ctx); +} + + +static void chcr_exit_tfm(struct crypto_skcipher *tfm) +{ + struct chcr_context *ctx = crypto_skcipher_ctx(tfm); + struct ablk_ctx *ablkctx = ABLK_CTX(ctx); + + crypto_free_skcipher(ablkctx->sw_cipher); +} + +static int get_alg_config(struct algo_param *params, + unsigned int auth_size) +{ + switch (auth_size) { + case SHA1_DIGEST_SIZE: + params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160; + params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA1; + params->result_size = SHA1_DIGEST_SIZE; + break; + case SHA224_DIGEST_SIZE: + params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; + params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA224; + params->result_size = SHA256_DIGEST_SIZE; + break; + case SHA256_DIGEST_SIZE: + params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; + params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA256; + params->result_size = SHA256_DIGEST_SIZE; + break; + case SHA384_DIGEST_SIZE: + params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512; + params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384; + params->result_size = SHA512_DIGEST_SIZE; + break; + case SHA512_DIGEST_SIZE: + params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512; + params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512; + params->result_size = SHA512_DIGEST_SIZE; + break; + default: + pr_err("ERROR, unsupported digest size\n"); + return -EINVAL; + } + return 0; +} + +static inline void chcr_free_shash(struct crypto_shash *base_hash) +{ + crypto_free_shash(base_hash); +} + +/** + * create_hash_wr - Create hash work request + * @req: Cipher req base + * @param: Container for create_hash_wr()'s parameters + */ +static struct sk_buff *create_hash_wr(struct ahash_request *req, + struct hash_wr_param *param) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct chcr_context *ctx = h_ctx(tfm); + struct hmac_ctx *hmacctx = HMAC_CTX(ctx); + struct sk_buff *skb = NULL; + struct uld_ctx *u_ctx = ULD_CTX(ctx); + struct chcr_wr *chcr_req; + struct ulptx_sgl *ulptx; + unsigned int nents = 0, transhdr_len; + unsigned int temp = 0; + gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : + GFP_ATOMIC; + struct adapter *adap = padap(h_ctx(tfm)->dev); + int error = 0; + unsigned int rx_channel_id = req_ctx->rxqidx / ctx->rxq_perchan; + + rx_channel_id = cxgb4_port_e2cchan(u_ctx->lldi.ports[rx_channel_id]); + transhdr_len = HASH_TRANSHDR_SIZE(param->kctx_len); + req_ctx->hctx_wr.imm = (transhdr_len + param->bfr_len + + param->sg_len) <= SGE_MAX_WR_LEN; + nents = sg_nents_xlen(req_ctx->hctx_wr.srcsg, param->sg_len, + CHCR_SRC_SG_SIZE, req_ctx->hctx_wr.src_ofst); + nents += param->bfr_len ? 1 : 0; + transhdr_len += req_ctx->hctx_wr.imm ? roundup(param->bfr_len + + param->sg_len, 16) : (sgl_len(nents) * 8); + transhdr_len = roundup(transhdr_len, 16); + + skb = alloc_skb(transhdr_len, flags); + if (!skb) + return ERR_PTR(-ENOMEM); + chcr_req = __skb_put_zero(skb, transhdr_len); + + chcr_req->sec_cpl.op_ivinsrtofst = + FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 0); + + chcr_req->sec_cpl.pldlen = htonl(param->bfr_len + param->sg_len); + + chcr_req->sec_cpl.aadstart_cipherstop_hi = + FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, 0, 0); + chcr_req->sec_cpl.cipherstop_lo_authinsert = + FILL_SEC_CPL_AUTHINSERT(0, 1, 0, 0); + chcr_req->sec_cpl.seqno_numivs = + FILL_SEC_CPL_SCMD0_SEQNO(0, 0, 0, param->alg_prm.auth_mode, + param->opad_needed, 0); + + chcr_req->sec_cpl.ivgen_hdrlen = + FILL_SEC_CPL_IVGEN_HDRLEN(param->last, param->more, 0, 1, 0, 0); + + memcpy(chcr_req->key_ctx.key, req_ctx->partial_hash, + param->alg_prm.result_size); + + if (param->opad_needed) + memcpy(chcr_req->key_ctx.key + + ((param->alg_prm.result_size <= 32) ? 32 : + CHCR_HASH_MAX_DIGEST_SIZE), + hmacctx->opad, param->alg_prm.result_size); + + chcr_req->key_ctx.ctx_hdr = FILL_KEY_CTX_HDR(CHCR_KEYCTX_NO_KEY, + param->alg_prm.mk_size, 0, + param->opad_needed, + ((param->kctx_len + + sizeof(chcr_req->key_ctx)) >> 4)); + chcr_req->sec_cpl.scmd1 = cpu_to_be64((u64)param->scmd1); + ulptx = (struct ulptx_sgl *)((u8 *)(chcr_req + 1) + param->kctx_len + + DUMMY_BYTES); + if (param->bfr_len != 0) { + req_ctx->hctx_wr.dma_addr = + dma_map_single(&u_ctx->lldi.pdev->dev, req_ctx->reqbfr, + param->bfr_len, DMA_TO_DEVICE); + if (dma_mapping_error(&u_ctx->lldi.pdev->dev, + req_ctx->hctx_wr. dma_addr)) { + error = -ENOMEM; + goto err; + } + req_ctx->hctx_wr.dma_len = param->bfr_len; + } else { + req_ctx->hctx_wr.dma_addr = 0; + } + chcr_add_hash_src_ent(req, ulptx, param); + /* Request upto max wr size */ + temp = param->kctx_len + DUMMY_BYTES + (req_ctx->hctx_wr.imm ? + (param->sg_len + param->bfr_len) : 0); + atomic_inc(&adap->chcr_stats.digest_rqst); + create_wreq(h_ctx(tfm), chcr_req, &req->base, req_ctx->hctx_wr.imm, + param->hash_size, transhdr_len, + temp, 0); + req_ctx->hctx_wr.skb = skb; + return skb; +err: + kfree_skb(skb); + return ERR_PTR(error); +} + +static int chcr_ahash_update(struct ahash_request *req) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); + struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); + struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm)); + struct chcr_context *ctx = h_ctx(rtfm); + struct chcr_dev *dev = h_ctx(rtfm)->dev; + struct sk_buff *skb; + u8 remainder = 0, bs; + unsigned int nbytes = req->nbytes; + struct hash_wr_param params; + int error; + unsigned int cpu; + + cpu = get_cpu(); + req_ctx->txqidx = cpu % ctx->ntxq; + req_ctx->rxqidx = cpu % ctx->nrxq; + put_cpu(); + + bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); + + if (nbytes + req_ctx->reqlen >= bs) { + remainder = (nbytes + req_ctx->reqlen) % bs; + nbytes = nbytes + req_ctx->reqlen - remainder; + } else { + sg_pcopy_to_buffer(req->src, sg_nents(req->src), req_ctx->reqbfr + + req_ctx->reqlen, nbytes, 0); + req_ctx->reqlen += nbytes; + return 0; + } + error = chcr_inc_wrcount(dev); + if (error) + return -ENXIO; + /* Detach state for CHCR means lldi or padap is freed. Increasing + * inflight count for dev guarantees that lldi and padap is valid + */ + if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], + req_ctx->txqidx) && + (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) { + error = -ENOSPC; + goto err; + } + + chcr_init_hctx_per_wr(req_ctx); + error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req); + if (error) { + error = -ENOMEM; + goto err; + } + get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); + params.kctx_len = roundup(params.alg_prm.result_size, 16); + params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen, + HASH_SPACE_LEFT(params.kctx_len), 0); + if (params.sg_len > req->nbytes) + params.sg_len = req->nbytes; + params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) - + req_ctx->reqlen; + params.opad_needed = 0; + params.more = 1; + params.last = 0; + params.bfr_len = req_ctx->reqlen; + params.scmd1 = 0; + req_ctx->hctx_wr.srcsg = req->src; + + params.hash_size = params.alg_prm.result_size; + req_ctx->data_len += params.sg_len + params.bfr_len; + skb = create_hash_wr(req, ¶ms); + if (IS_ERR(skb)) { + error = PTR_ERR(skb); + goto unmap; + } + + req_ctx->hctx_wr.processed += params.sg_len; + if (remainder) { + /* Swap buffers */ + swap(req_ctx->reqbfr, req_ctx->skbfr); + sg_pcopy_to_buffer(req->src, sg_nents(req->src), + req_ctx->reqbfr, remainder, req->nbytes - + remainder); + } + req_ctx->reqlen = remainder; + skb->dev = u_ctx->lldi.ports[0]; + set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx); + chcr_send_wr(skb); + return -EINPROGRESS; +unmap: + chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); +err: + chcr_dec_wrcount(dev); + return error; +} + +static void create_last_hash_block(char *bfr_ptr, unsigned int bs, u64 scmd1) +{ + memset(bfr_ptr, 0, bs); + *bfr_ptr = 0x80; + if (bs == 64) + *(__be64 *)(bfr_ptr + 56) = cpu_to_be64(scmd1 << 3); + else + *(__be64 *)(bfr_ptr + 120) = cpu_to_be64(scmd1 << 3); +} + +static int chcr_ahash_final(struct ahash_request *req) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); + struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); + struct chcr_dev *dev = h_ctx(rtfm)->dev; + struct hash_wr_param params; + struct sk_buff *skb; + struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm)); + struct chcr_context *ctx = h_ctx(rtfm); + u8 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); + int error; + unsigned int cpu; + + cpu = get_cpu(); + req_ctx->txqidx = cpu % ctx->ntxq; + req_ctx->rxqidx = cpu % ctx->nrxq; + put_cpu(); + + error = chcr_inc_wrcount(dev); + if (error) + return -ENXIO; + + chcr_init_hctx_per_wr(req_ctx); + if (is_hmac(crypto_ahash_tfm(rtfm))) + params.opad_needed = 1; + else + params.opad_needed = 0; + params.sg_len = 0; + req_ctx->hctx_wr.isfinal = 1; + get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); + params.kctx_len = roundup(params.alg_prm.result_size, 16); + if (is_hmac(crypto_ahash_tfm(rtfm))) { + params.opad_needed = 1; + params.kctx_len *= 2; + } else { + params.opad_needed = 0; + } + + req_ctx->hctx_wr.result = 1; + params.bfr_len = req_ctx->reqlen; + req_ctx->data_len += params.bfr_len + params.sg_len; + req_ctx->hctx_wr.srcsg = req->src; + if (req_ctx->reqlen == 0) { + create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len); + params.last = 0; + params.more = 1; + params.scmd1 = 0; + params.bfr_len = bs; + + } else { + params.scmd1 = req_ctx->data_len; + params.last = 1; + params.more = 0; + } + params.hash_size = crypto_ahash_digestsize(rtfm); + skb = create_hash_wr(req, ¶ms); + if (IS_ERR(skb)) { + error = PTR_ERR(skb); + goto err; + } + req_ctx->reqlen = 0; + skb->dev = u_ctx->lldi.ports[0]; + set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx); + chcr_send_wr(skb); + return -EINPROGRESS; +err: + chcr_dec_wrcount(dev); + return error; +} + +static int chcr_ahash_finup(struct ahash_request *req) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); + struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); + struct chcr_dev *dev = h_ctx(rtfm)->dev; + struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm)); + struct chcr_context *ctx = h_ctx(rtfm); + struct sk_buff *skb; + struct hash_wr_param params; + u8 bs; + int error; + unsigned int cpu; + + cpu = get_cpu(); + req_ctx->txqidx = cpu % ctx->ntxq; + req_ctx->rxqidx = cpu % ctx->nrxq; + put_cpu(); + + bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); + error = chcr_inc_wrcount(dev); + if (error) + return -ENXIO; + + if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], + req_ctx->txqidx) && + (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) { + error = -ENOSPC; + goto err; + } + chcr_init_hctx_per_wr(req_ctx); + error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req); + if (error) { + error = -ENOMEM; + goto err; + } + + get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); + params.kctx_len = roundup(params.alg_prm.result_size, 16); + if (is_hmac(crypto_ahash_tfm(rtfm))) { + params.kctx_len *= 2; + params.opad_needed = 1; + } else { + params.opad_needed = 0; + } + + params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen, + HASH_SPACE_LEFT(params.kctx_len), 0); + if (params.sg_len < req->nbytes) { + if (is_hmac(crypto_ahash_tfm(rtfm))) { + params.kctx_len /= 2; + params.opad_needed = 0; + } + params.last = 0; + params.more = 1; + params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) + - req_ctx->reqlen; + params.hash_size = params.alg_prm.result_size; + params.scmd1 = 0; + } else { + params.last = 1; + params.more = 0; + params.sg_len = req->nbytes; + params.hash_size = crypto_ahash_digestsize(rtfm); + params.scmd1 = req_ctx->data_len + req_ctx->reqlen + + params.sg_len; + } + params.bfr_len = req_ctx->reqlen; + req_ctx->data_len += params.bfr_len + params.sg_len; + req_ctx->hctx_wr.result = 1; + req_ctx->hctx_wr.srcsg = req->src; + if ((req_ctx->reqlen + req->nbytes) == 0) { + create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len); + params.last = 0; + params.more = 1; + params.scmd1 = 0; + params.bfr_len = bs; + } + skb = create_hash_wr(req, ¶ms); + if (IS_ERR(skb)) { + error = PTR_ERR(skb); + goto unmap; + } + req_ctx->reqlen = 0; + req_ctx->hctx_wr.processed += params.sg_len; + skb->dev = u_ctx->lldi.ports[0]; + set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx); + chcr_send_wr(skb); + return -EINPROGRESS; +unmap: + chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); +err: + chcr_dec_wrcount(dev); + return error; +} + +static int chcr_ahash_digest(struct ahash_request *req) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); + struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); + struct chcr_dev *dev = h_ctx(rtfm)->dev; + struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm)); + struct chcr_context *ctx = h_ctx(rtfm); + struct sk_buff *skb; + struct hash_wr_param params; + u8 bs; + int error; + unsigned int cpu; + + cpu = get_cpu(); + req_ctx->txqidx = cpu % ctx->ntxq; + req_ctx->rxqidx = cpu % ctx->nrxq; + put_cpu(); + + rtfm->init(req); + bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); + error = chcr_inc_wrcount(dev); + if (error) + return -ENXIO; + + if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], + req_ctx->txqidx) && + (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) { + error = -ENOSPC; + goto err; + } + + chcr_init_hctx_per_wr(req_ctx); + error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req); + if (error) { + error = -ENOMEM; + goto err; + } + + get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); + params.kctx_len = roundup(params.alg_prm.result_size, 16); + if (is_hmac(crypto_ahash_tfm(rtfm))) { + params.kctx_len *= 2; + params.opad_needed = 1; + } else { + params.opad_needed = 0; + } + params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen, + HASH_SPACE_LEFT(params.kctx_len), 0); + if (params.sg_len < req->nbytes) { + if (is_hmac(crypto_ahash_tfm(rtfm))) { + params.kctx_len /= 2; + params.opad_needed = 0; + } + params.last = 0; + params.more = 1; + params.scmd1 = 0; + params.sg_len = rounddown(params.sg_len, bs); + params.hash_size = params.alg_prm.result_size; + } else { + params.sg_len = req->nbytes; + params.hash_size = crypto_ahash_digestsize(rtfm); + params.last = 1; + params.more = 0; + params.scmd1 = req->nbytes + req_ctx->data_len; + + } + params.bfr_len = 0; + req_ctx->hctx_wr.result = 1; + req_ctx->hctx_wr.srcsg = req->src; + req_ctx->data_len += params.bfr_len + params.sg_len; + + if (req->nbytes == 0) { + create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len); + params.more = 1; + params.bfr_len = bs; + } + + skb = create_hash_wr(req, ¶ms); + if (IS_ERR(skb)) { + error = PTR_ERR(skb); + goto unmap; + } + req_ctx->hctx_wr.processed += params.sg_len; + skb->dev = u_ctx->lldi.ports[0]; + set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx); + chcr_send_wr(skb); + return -EINPROGRESS; +unmap: + chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); +err: + chcr_dec_wrcount(dev); + return error; +} + +static int chcr_ahash_continue(struct ahash_request *req) +{ + struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req); + struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr; + struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); + struct chcr_context *ctx = h_ctx(rtfm); + struct uld_ctx *u_ctx = ULD_CTX(ctx); + struct sk_buff *skb; + struct hash_wr_param params; + u8 bs; + int error; + unsigned int cpu; + + cpu = get_cpu(); + reqctx->txqidx = cpu % ctx->ntxq; + reqctx->rxqidx = cpu % ctx->nrxq; + put_cpu(); + + bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); + get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); + params.kctx_len = roundup(params.alg_prm.result_size, 16); + if (is_hmac(crypto_ahash_tfm(rtfm))) { + params.kctx_len *= 2; + params.opad_needed = 1; + } else { + params.opad_needed = 0; + } + params.sg_len = chcr_hash_ent_in_wr(hctx_wr->srcsg, 0, + HASH_SPACE_LEFT(params.kctx_len), + hctx_wr->src_ofst); + if ((params.sg_len + hctx_wr->processed) > req->nbytes) + params.sg_len = req->nbytes - hctx_wr->processed; + if (!hctx_wr->result || + ((params.sg_len + hctx_wr->processed) < req->nbytes)) { + if (is_hmac(crypto_ahash_tfm(rtfm))) { + params.kctx_len /= 2; + params.opad_needed = 0; + } + params.last = 0; + params.more = 1; + params.sg_len = rounddown(params.sg_len, bs); + params.hash_size = params.alg_prm.result_size; + params.scmd1 = 0; + } else { + params.last = 1; + params.more = 0; + params.hash_size = crypto_ahash_digestsize(rtfm); + params.scmd1 = reqctx->data_len + params.sg_len; + } + params.bfr_len = 0; + reqctx->data_len += params.sg_len; + skb = create_hash_wr(req, ¶ms); + if (IS_ERR(skb)) { + error = PTR_ERR(skb); + goto err; + } + hctx_wr->processed += params.sg_len; + skb->dev = u_ctx->lldi.ports[0]; + set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx); + chcr_send_wr(skb); + return 0; +err: + return error; +} + +static inline void chcr_handle_ahash_resp(struct ahash_request *req, + unsigned char *input, + int err) +{ + struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req); + struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr; + int digestsize, updated_digestsize; + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm)); + struct chcr_dev *dev = h_ctx(tfm)->dev; + + if (input == NULL) + goto out; + digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req)); + updated_digestsize = digestsize; + if (digestsize == SHA224_DIGEST_SIZE) + updated_digestsize = SHA256_DIGEST_SIZE; + else if (digestsize == SHA384_DIGEST_SIZE) + updated_digestsize = SHA512_DIGEST_SIZE; + + if (hctx_wr->dma_addr) { + dma_unmap_single(&u_ctx->lldi.pdev->dev, hctx_wr->dma_addr, + hctx_wr->dma_len, DMA_TO_DEVICE); + hctx_wr->dma_addr = 0; + } + if (hctx_wr->isfinal || ((hctx_wr->processed + reqctx->reqlen) == + req->nbytes)) { + if (hctx_wr->result == 1) { + hctx_wr->result = 0; + memcpy(req->result, input + sizeof(struct cpl_fw6_pld), + digestsize); + } else { + memcpy(reqctx->partial_hash, + input + sizeof(struct cpl_fw6_pld), + updated_digestsize); + + } + goto unmap; + } + memcpy(reqctx->partial_hash, input + sizeof(struct cpl_fw6_pld), + updated_digestsize); + + err = chcr_ahash_continue(req); + if (err) + goto unmap; + return; +unmap: + if (hctx_wr->is_sg_map) + chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); + + +out: + chcr_dec_wrcount(dev); + req->base.complete(&req->base, err); +} + +/* + * chcr_handle_resp - Unmap the DMA buffers associated with the request + * @req: crypto request + */ +int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input, + int err) +{ + struct crypto_tfm *tfm = req->tfm; + struct chcr_context *ctx = crypto_tfm_ctx(tfm); + struct adapter *adap = padap(ctx->dev); + + switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) { + case CRYPTO_ALG_TYPE_AEAD: + err = chcr_handle_aead_resp(aead_request_cast(req), input, err); + break; + + case CRYPTO_ALG_TYPE_SKCIPHER: + chcr_handle_cipher_resp(skcipher_request_cast(req), + input, err); + break; + case CRYPTO_ALG_TYPE_AHASH: + chcr_handle_ahash_resp(ahash_request_cast(req), input, err); + } + atomic_inc(&adap->chcr_stats.complete); + return err; +} +static int chcr_ahash_export(struct ahash_request *areq, void *out) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); + struct chcr_ahash_req_ctx *state = out; + + state->reqlen = req_ctx->reqlen; + state->data_len = req_ctx->data_len; + memcpy(state->bfr1, req_ctx->reqbfr, req_ctx->reqlen); + memcpy(state->partial_hash, req_ctx->partial_hash, + CHCR_HASH_MAX_DIGEST_SIZE); + chcr_init_hctx_per_wr(state); + return 0; +} + +static int chcr_ahash_import(struct ahash_request *areq, const void *in) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); + struct chcr_ahash_req_ctx *state = (struct chcr_ahash_req_ctx *)in; + + req_ctx->reqlen = state->reqlen; + req_ctx->data_len = state->data_len; + req_ctx->reqbfr = req_ctx->bfr1; + req_ctx->skbfr = req_ctx->bfr2; + memcpy(req_ctx->bfr1, state->bfr1, CHCR_HASH_MAX_BLOCK_SIZE_128); + memcpy(req_ctx->partial_hash, state->partial_hash, + CHCR_HASH_MAX_DIGEST_SIZE); + chcr_init_hctx_per_wr(req_ctx); + return 0; +} + +static int chcr_ahash_setkey(struct crypto_ahash *tfm, const u8 *key, + unsigned int keylen) +{ + struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm)); + unsigned int digestsize = crypto_ahash_digestsize(tfm); + unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); + unsigned int i, err = 0, updated_digestsize; + + SHASH_DESC_ON_STACK(shash, hmacctx->base_hash); + + /* use the key to calculate the ipad and opad. ipad will sent with the + * first request's data. opad will be sent with the final hash result + * ipad in hmacctx->ipad and opad in hmacctx->opad location + */ + shash->tfm = hmacctx->base_hash; + if (keylen > bs) { + err = crypto_shash_digest(shash, key, keylen, + hmacctx->ipad); + if (err) + goto out; + keylen = digestsize; + } else { + memcpy(hmacctx->ipad, key, keylen); + } + memset(hmacctx->ipad + keylen, 0, bs - keylen); + memcpy(hmacctx->opad, hmacctx->ipad, bs); + + for (i = 0; i < bs / sizeof(int); i++) { + *((unsigned int *)(&hmacctx->ipad) + i) ^= IPAD_DATA; + *((unsigned int *)(&hmacctx->opad) + i) ^= OPAD_DATA; + } + + updated_digestsize = digestsize; + if (digestsize == SHA224_DIGEST_SIZE) + updated_digestsize = SHA256_DIGEST_SIZE; + else if (digestsize == SHA384_DIGEST_SIZE) + updated_digestsize = SHA512_DIGEST_SIZE; + err = chcr_compute_partial_hash(shash, hmacctx->ipad, + hmacctx->ipad, digestsize); + if (err) + goto out; + chcr_change_order(hmacctx->ipad, updated_digestsize); + + err = chcr_compute_partial_hash(shash, hmacctx->opad, + hmacctx->opad, digestsize); + if (err) + goto out; + chcr_change_order(hmacctx->opad, updated_digestsize); +out: + return err; +} + +static int chcr_aes_xts_setkey(struct crypto_skcipher *cipher, const u8 *key, + unsigned int key_len) +{ + struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); + unsigned short context_size = 0; + int err; + + err = chcr_cipher_fallback_setkey(cipher, key, key_len); + if (err) + goto badkey_err; + + memcpy(ablkctx->key, key, key_len); + ablkctx->enckey_len = key_len; + get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, key_len << 2); + context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4; + /* Both keys for xts must be aligned to 16 byte boundary + * by padding with zeros. So for 24 byte keys padding 8 zeroes. + */ + if (key_len == 48) { + context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len + + 16) >> 4; + memmove(ablkctx->key + 32, ablkctx->key + 24, 24); + memset(ablkctx->key + 24, 0, 8); + memset(ablkctx->key + 56, 0, 8); + ablkctx->enckey_len = 64; + ablkctx->key_ctx_hdr = + FILL_KEY_CTX_HDR(CHCR_KEYCTX_CIPHER_KEY_SIZE_192, + CHCR_KEYCTX_NO_KEY, 1, + 0, context_size); + } else { + ablkctx->key_ctx_hdr = + FILL_KEY_CTX_HDR((key_len == AES_KEYSIZE_256) ? + CHCR_KEYCTX_CIPHER_KEY_SIZE_128 : + CHCR_KEYCTX_CIPHER_KEY_SIZE_256, + CHCR_KEYCTX_NO_KEY, 1, + 0, context_size); + } + ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_XTS; + return 0; +badkey_err: + ablkctx->enckey_len = 0; + + return err; +} + +static int chcr_sha_init(struct ahash_request *areq) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); + int digestsize = crypto_ahash_digestsize(tfm); + + req_ctx->data_len = 0; + req_ctx->reqlen = 0; + req_ctx->reqbfr = req_ctx->bfr1; + req_ctx->skbfr = req_ctx->bfr2; + copy_hash_init_values(req_ctx->partial_hash, digestsize); + + return 0; +} + +static int chcr_sha_cra_init(struct crypto_tfm *tfm) +{ + crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), + sizeof(struct chcr_ahash_req_ctx)); + return chcr_device_init(crypto_tfm_ctx(tfm)); +} + +static int chcr_hmac_init(struct ahash_request *areq) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); + struct crypto_ahash *rtfm = crypto_ahash_reqtfm(areq); + struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(rtfm)); + unsigned int digestsize = crypto_ahash_digestsize(rtfm); + unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); + + chcr_sha_init(areq); + req_ctx->data_len = bs; + if (is_hmac(crypto_ahash_tfm(rtfm))) { + if (digestsize == SHA224_DIGEST_SIZE) + memcpy(req_ctx->partial_hash, hmacctx->ipad, + SHA256_DIGEST_SIZE); + else if (digestsize == SHA384_DIGEST_SIZE) + memcpy(req_ctx->partial_hash, hmacctx->ipad, + SHA512_DIGEST_SIZE); + else + memcpy(req_ctx->partial_hash, hmacctx->ipad, + digestsize); + } + return 0; +} + +static int chcr_hmac_cra_init(struct crypto_tfm *tfm) +{ + struct chcr_context *ctx = crypto_tfm_ctx(tfm); + struct hmac_ctx *hmacctx = HMAC_CTX(ctx); + unsigned int digestsize = + crypto_ahash_digestsize(__crypto_ahash_cast(tfm)); + + crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), + sizeof(struct chcr_ahash_req_ctx)); + hmacctx->base_hash = chcr_alloc_shash(digestsize); + if (IS_ERR(hmacctx->base_hash)) + return PTR_ERR(hmacctx->base_hash); + return chcr_device_init(crypto_tfm_ctx(tfm)); +} + +static void chcr_hmac_cra_exit(struct crypto_tfm *tfm) +{ + struct chcr_context *ctx = crypto_tfm_ctx(tfm); + struct hmac_ctx *hmacctx = HMAC_CTX(ctx); + + if (hmacctx->base_hash) { + chcr_free_shash(hmacctx->base_hash); + hmacctx->base_hash = NULL; + } +} + +inline void chcr_aead_common_exit(struct aead_request *req) +{ + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct uld_ctx *u_ctx = ULD_CTX(a_ctx(tfm)); + + chcr_aead_dma_unmap(&u_ctx->lldi.pdev->dev, req, reqctx->op); +} + +static int chcr_aead_common_init(struct aead_request *req) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + unsigned int authsize = crypto_aead_authsize(tfm); + int error = -EINVAL; + + /* validate key size */ + if (aeadctx->enckey_len == 0) + goto err; + if (reqctx->op && req->cryptlen < authsize) + goto err; + if (reqctx->b0_len) + reqctx->scratch_pad = reqctx->iv + IV; + else + reqctx->scratch_pad = NULL; + + error = chcr_aead_dma_map(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req, + reqctx->op); + if (error) { + error = -ENOMEM; + goto err; + } + + return 0; +err: + return error; +} + +static int chcr_aead_need_fallback(struct aead_request *req, int dst_nents, + int aadmax, int wrlen, + unsigned short op_type) +{ + unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req)); + + if (((req->cryptlen - (op_type ? authsize : 0)) == 0) || + dst_nents > MAX_DSGL_ENT || + (req->assoclen > aadmax) || + (wrlen > SGE_MAX_WR_LEN)) + return 1; + return 0; +} + +static int chcr_aead_fallback(struct aead_request *req, unsigned short op_type) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + struct aead_request *subreq = aead_request_ctx(req); + + aead_request_set_tfm(subreq, aeadctx->sw_cipher); + aead_request_set_callback(subreq, req->base.flags, + req->base.complete, req->base.data); + aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, + req->iv); + aead_request_set_ad(subreq, req->assoclen); + return op_type ? crypto_aead_decrypt(subreq) : + crypto_aead_encrypt(subreq); +} + +static struct sk_buff *create_authenc_wr(struct aead_request *req, + unsigned short qid, + int size) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_context *ctx = a_ctx(tfm); + struct uld_ctx *u_ctx = ULD_CTX(ctx); + struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx); + struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx); + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct sk_buff *skb = NULL; + struct chcr_wr *chcr_req; + struct cpl_rx_phys_dsgl *phys_cpl; + struct ulptx_sgl *ulptx; + unsigned int transhdr_len; + unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm); + unsigned int kctx_len = 0, dnents, snents; + unsigned int authsize = crypto_aead_authsize(tfm); + int error = -EINVAL; + u8 *ivptr; + int null = 0; + gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : + GFP_ATOMIC; + struct adapter *adap = padap(ctx->dev); + unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan; + + rx_channel_id = cxgb4_port_e2cchan(u_ctx->lldi.ports[rx_channel_id]); + if (req->cryptlen == 0) + return NULL; + + reqctx->b0_len = 0; + error = chcr_aead_common_init(req); + if (error) + return ERR_PTR(error); + + if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL || + subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { + null = 1; + } + dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen + + (reqctx->op ? -authsize : authsize), CHCR_DST_SG_SIZE, 0); + dnents += MIN_AUTH_SG; // For IV + snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen, + CHCR_SRC_SG_SIZE, 0); + dst_size = get_space_for_phys_dsgl(dnents); + kctx_len = (KEY_CONTEXT_CTX_LEN_G(ntohl(aeadctx->key_ctx_hdr)) << 4) + - sizeof(chcr_req->key_ctx); + transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); + reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) < + SGE_MAX_WR_LEN; + temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16) + : (sgl_len(snents) * 8); + transhdr_len += temp; + transhdr_len = roundup(transhdr_len, 16); + + if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE, + transhdr_len, reqctx->op)) { + atomic_inc(&adap->chcr_stats.fallback); + chcr_aead_common_exit(req); + return ERR_PTR(chcr_aead_fallback(req, reqctx->op)); + } + skb = alloc_skb(transhdr_len, flags); + if (!skb) { + error = -ENOMEM; + goto err; + } + + chcr_req = __skb_put_zero(skb, transhdr_len); + + temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize; + + /* + * Input order is AAD,IV and Payload. where IV should be included as + * the part of authdata. All other fields should be filled according + * to the hardware spec + */ + chcr_req->sec_cpl.op_ivinsrtofst = + FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 1); + chcr_req->sec_cpl.pldlen = htonl(req->assoclen + IV + req->cryptlen); + chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI( + null ? 0 : 1 + IV, + null ? 0 : IV + req->assoclen, + req->assoclen + IV + 1, + (temp & 0x1F0) >> 4); + chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT( + temp & 0xF, + null ? 0 : req->assoclen + IV + 1, + temp, temp); + if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL || + subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA) + temp = CHCR_SCMD_CIPHER_MODE_AES_CTR; + else + temp = CHCR_SCMD_CIPHER_MODE_AES_CBC; + chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, + (reqctx->op == CHCR_ENCRYPT_OP) ? 1 : 0, + temp, + actx->auth_mode, aeadctx->hmac_ctrl, + IV >> 1); + chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, + 0, 0, dst_size); + + chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr; + if (reqctx->op == CHCR_ENCRYPT_OP || + subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || + subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) + memcpy(chcr_req->key_ctx.key, aeadctx->key, + aeadctx->enckey_len); + else + memcpy(chcr_req->key_ctx.key, actx->dec_rrkey, + aeadctx->enckey_len); + + memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16), + actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16)); + phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); + ivptr = (u8 *)(phys_cpl + 1) + dst_size; + ulptx = (struct ulptx_sgl *)(ivptr + IV); + if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || + subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { + memcpy(ivptr, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE); + memcpy(ivptr + CTR_RFC3686_NONCE_SIZE, req->iv, + CTR_RFC3686_IV_SIZE); + *(__be32 *)(ivptr + CTR_RFC3686_NONCE_SIZE + + CTR_RFC3686_IV_SIZE) = cpu_to_be32(1); + } else { + memcpy(ivptr, req->iv, IV); + } + chcr_add_aead_dst_ent(req, phys_cpl, qid); + chcr_add_aead_src_ent(req, ulptx); + atomic_inc(&adap->chcr_stats.cipher_rqst); + temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV + + kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0); + create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size, + transhdr_len, temp, 0); + reqctx->skb = skb; + + return skb; +err: + chcr_aead_common_exit(req); + + return ERR_PTR(error); +} + +int chcr_aead_dma_map(struct device *dev, + struct aead_request *req, + unsigned short op_type) +{ + int error; + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + unsigned int authsize = crypto_aead_authsize(tfm); + int src_len, dst_len; + + /* calculate and handle src and dst sg length separately + * for inplace and out-of place operations + */ + if (req->src == req->dst) { + src_len = req->assoclen + req->cryptlen + (op_type ? + 0 : authsize); + dst_len = src_len; + } else { + src_len = req->assoclen + req->cryptlen; + dst_len = req->assoclen + req->cryptlen + (op_type ? + -authsize : authsize); + } + + if (!req->cryptlen || !src_len || !dst_len) + return 0; + reqctx->iv_dma = dma_map_single(dev, reqctx->iv, (IV + reqctx->b0_len), + DMA_BIDIRECTIONAL); + if (dma_mapping_error(dev, reqctx->iv_dma)) + return -ENOMEM; + if (reqctx->b0_len) + reqctx->b0_dma = reqctx->iv_dma + IV; + else + reqctx->b0_dma = 0; + if (req->src == req->dst) { + error = dma_map_sg(dev, req->src, + sg_nents_for_len(req->src, src_len), + DMA_BIDIRECTIONAL); + if (!error) + goto err; + } else { + error = dma_map_sg(dev, req->src, + sg_nents_for_len(req->src, src_len), + DMA_TO_DEVICE); + if (!error) + goto err; + error = dma_map_sg(dev, req->dst, + sg_nents_for_len(req->dst, dst_len), + DMA_FROM_DEVICE); + if (!error) { + dma_unmap_sg(dev, req->src, + sg_nents_for_len(req->src, src_len), + DMA_TO_DEVICE); + goto err; + } + } + + return 0; +err: + dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL); + return -ENOMEM; +} + +void chcr_aead_dma_unmap(struct device *dev, + struct aead_request *req, + unsigned short op_type) +{ + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + unsigned int authsize = crypto_aead_authsize(tfm); + int src_len, dst_len; + + /* calculate and handle src and dst sg length separately + * for inplace and out-of place operations + */ + if (req->src == req->dst) { + src_len = req->assoclen + req->cryptlen + (op_type ? + 0 : authsize); + dst_len = src_len; + } else { + src_len = req->assoclen + req->cryptlen; + dst_len = req->assoclen + req->cryptlen + (op_type ? + -authsize : authsize); + } + + if (!req->cryptlen || !src_len || !dst_len) + return; + + dma_unmap_single(dev, reqctx->iv_dma, (IV + reqctx->b0_len), + DMA_BIDIRECTIONAL); + if (req->src == req->dst) { + dma_unmap_sg(dev, req->src, + sg_nents_for_len(req->src, src_len), + DMA_BIDIRECTIONAL); + } else { + dma_unmap_sg(dev, req->src, + sg_nents_for_len(req->src, src_len), + DMA_TO_DEVICE); + dma_unmap_sg(dev, req->dst, + sg_nents_for_len(req->dst, dst_len), + DMA_FROM_DEVICE); + } +} + +void chcr_add_aead_src_ent(struct aead_request *req, + struct ulptx_sgl *ulptx) +{ + struct ulptx_walk ulp_walk; + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + + if (reqctx->imm) { + u8 *buf = (u8 *)ulptx; + + if (reqctx->b0_len) { + memcpy(buf, reqctx->scratch_pad, reqctx->b0_len); + buf += reqctx->b0_len; + } + sg_pcopy_to_buffer(req->src, sg_nents(req->src), + buf, req->cryptlen + req->assoclen, 0); + } else { + ulptx_walk_init(&ulp_walk, ulptx); + if (reqctx->b0_len) + ulptx_walk_add_page(&ulp_walk, reqctx->b0_len, + reqctx->b0_dma); + ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen + + req->assoclen, 0); + ulptx_walk_end(&ulp_walk); + } +} + +void chcr_add_aead_dst_ent(struct aead_request *req, + struct cpl_rx_phys_dsgl *phys_cpl, + unsigned short qid) +{ + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct dsgl_walk dsgl_walk; + unsigned int authsize = crypto_aead_authsize(tfm); + struct chcr_context *ctx = a_ctx(tfm); + struct uld_ctx *u_ctx = ULD_CTX(ctx); + u32 temp; + unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan; + + rx_channel_id = cxgb4_port_e2cchan(u_ctx->lldi.ports[rx_channel_id]); + dsgl_walk_init(&dsgl_walk, phys_cpl); + dsgl_walk_add_page(&dsgl_walk, IV + reqctx->b0_len, reqctx->iv_dma); + temp = req->assoclen + req->cryptlen + + (reqctx->op ? -authsize : authsize); + dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, 0); + dsgl_walk_end(&dsgl_walk, qid, rx_channel_id); +} + +void chcr_add_cipher_src_ent(struct skcipher_request *req, + void *ulptx, + struct cipher_wr_param *wrparam) +{ + struct ulptx_walk ulp_walk; + struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req); + u8 *buf = ulptx; + + memcpy(buf, reqctx->iv, IV); + buf += IV; + if (reqctx->imm) { + sg_pcopy_to_buffer(req->src, sg_nents(req->src), + buf, wrparam->bytes, reqctx->processed); + } else { + ulptx_walk_init(&ulp_walk, (struct ulptx_sgl *)buf); + ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes, + reqctx->src_ofst); + reqctx->srcsg = ulp_walk.last_sg; + reqctx->src_ofst = ulp_walk.last_sg_len; + ulptx_walk_end(&ulp_walk); + } +} + +void chcr_add_cipher_dst_ent(struct skcipher_request *req, + struct cpl_rx_phys_dsgl *phys_cpl, + struct cipher_wr_param *wrparam, + unsigned short qid) +{ + struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req); + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(wrparam->req); + struct chcr_context *ctx = c_ctx(tfm); + struct uld_ctx *u_ctx = ULD_CTX(ctx); + struct dsgl_walk dsgl_walk; + unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan; + + rx_channel_id = cxgb4_port_e2cchan(u_ctx->lldi.ports[rx_channel_id]); + dsgl_walk_init(&dsgl_walk, phys_cpl); + dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes, + reqctx->dst_ofst); + reqctx->dstsg = dsgl_walk.last_sg; + reqctx->dst_ofst = dsgl_walk.last_sg_len; + dsgl_walk_end(&dsgl_walk, qid, rx_channel_id); +} + +void chcr_add_hash_src_ent(struct ahash_request *req, + struct ulptx_sgl *ulptx, + struct hash_wr_param *param) +{ + struct ulptx_walk ulp_walk; + struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req); + + if (reqctx->hctx_wr.imm) { + u8 *buf = (u8 *)ulptx; + + if (param->bfr_len) { + memcpy(buf, reqctx->reqbfr, param->bfr_len); + buf += param->bfr_len; + } + + sg_pcopy_to_buffer(reqctx->hctx_wr.srcsg, + sg_nents(reqctx->hctx_wr.srcsg), buf, + param->sg_len, 0); + } else { + ulptx_walk_init(&ulp_walk, ulptx); + if (param->bfr_len) + ulptx_walk_add_page(&ulp_walk, param->bfr_len, + reqctx->hctx_wr.dma_addr); + ulptx_walk_add_sg(&ulp_walk, reqctx->hctx_wr.srcsg, + param->sg_len, reqctx->hctx_wr.src_ofst); + reqctx->hctx_wr.srcsg = ulp_walk.last_sg; + reqctx->hctx_wr.src_ofst = ulp_walk.last_sg_len; + ulptx_walk_end(&ulp_walk); + } +} + +int chcr_hash_dma_map(struct device *dev, + struct ahash_request *req) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); + int error = 0; + + if (!req->nbytes) + return 0; + error = dma_map_sg(dev, req->src, sg_nents(req->src), + DMA_TO_DEVICE); + if (!error) + return -ENOMEM; + req_ctx->hctx_wr.is_sg_map = 1; + return 0; +} + +void chcr_hash_dma_unmap(struct device *dev, + struct ahash_request *req) +{ + struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); + + if (!req->nbytes) + return; + + dma_unmap_sg(dev, req->src, sg_nents(req->src), + DMA_TO_DEVICE); + req_ctx->hctx_wr.is_sg_map = 0; + +} + +int chcr_cipher_dma_map(struct device *dev, + struct skcipher_request *req) +{ + int error; + + if (req->src == req->dst) { + error = dma_map_sg(dev, req->src, sg_nents(req->src), + DMA_BIDIRECTIONAL); + if (!error) + goto err; + } else { + error = dma_map_sg(dev, req->src, sg_nents(req->src), + DMA_TO_DEVICE); + if (!error) + goto err; + error = dma_map_sg(dev, req->dst, sg_nents(req->dst), + DMA_FROM_DEVICE); + if (!error) { + dma_unmap_sg(dev, req->src, sg_nents(req->src), + DMA_TO_DEVICE); + goto err; + } + } + + return 0; +err: + return -ENOMEM; +} + +void chcr_cipher_dma_unmap(struct device *dev, + struct skcipher_request *req) +{ + if (req->src == req->dst) { + dma_unmap_sg(dev, req->src, sg_nents(req->src), + DMA_BIDIRECTIONAL); + } else { + dma_unmap_sg(dev, req->src, sg_nents(req->src), + DMA_TO_DEVICE); + dma_unmap_sg(dev, req->dst, sg_nents(req->dst), + DMA_FROM_DEVICE); + } +} + +static int set_msg_len(u8 *block, unsigned int msglen, int csize) +{ + __be32 data; + + memset(block, 0, csize); + block += csize; + + if (csize >= 4) + csize = 4; + else if (msglen > (unsigned int)(1 << (8 * csize))) + return -EOVERFLOW; + + data = cpu_to_be32(msglen); + memcpy(block - csize, (u8 *)&data + 4 - csize, csize); + + return 0; +} + +static int generate_b0(struct aead_request *req, u8 *ivptr, + unsigned short op_type) +{ + unsigned int l, lp, m; + int rc; + struct crypto_aead *aead = crypto_aead_reqtfm(req); + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + u8 *b0 = reqctx->scratch_pad; + + m = crypto_aead_authsize(aead); + + memcpy(b0, ivptr, 16); + + lp = b0[0]; + l = lp + 1; + + /* set m, bits 3-5 */ + *b0 |= (8 * ((m - 2) / 2)); + + /* set adata, bit 6, if associated data is used */ + if (req->assoclen) + *b0 |= 64; + rc = set_msg_len(b0 + 16 - l, + (op_type == CHCR_DECRYPT_OP) ? + req->cryptlen - m : req->cryptlen, l); + + return rc; +} + +static inline int crypto_ccm_check_iv(const u8 *iv) +{ + /* 2 <= L <= 8, so 1 <= L' <= 7. */ + if (iv[0] < 1 || iv[0] > 7) + return -EINVAL; + + return 0; +} + +static int ccm_format_packet(struct aead_request *req, + u8 *ivptr, + unsigned int sub_type, + unsigned short op_type, + unsigned int assoclen) +{ + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + int rc = 0; + + if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) { + ivptr[0] = 3; + memcpy(ivptr + 1, &aeadctx->salt[0], 3); + memcpy(ivptr + 4, req->iv, 8); + memset(ivptr + 12, 0, 4); + } else { + memcpy(ivptr, req->iv, 16); + } + if (assoclen) + put_unaligned_be16(assoclen, &reqctx->scratch_pad[16]); + + rc = generate_b0(req, ivptr, op_type); + /* zero the ctr value */ + memset(ivptr + 15 - ivptr[0], 0, ivptr[0] + 1); + return rc; +} + +static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl, + unsigned int dst_size, + struct aead_request *req, + unsigned short op_type) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_context *ctx = a_ctx(tfm); + struct uld_ctx *u_ctx = ULD_CTX(ctx); + struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx); + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM; + unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC; + unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan; + unsigned int ccm_xtra; + unsigned int tag_offset = 0, auth_offset = 0; + unsigned int assoclen; + + rx_channel_id = cxgb4_port_e2cchan(u_ctx->lldi.ports[rx_channel_id]); + + if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) + assoclen = req->assoclen - 8; + else + assoclen = req->assoclen; + ccm_xtra = CCM_B0_SIZE + + ((assoclen) ? CCM_AAD_FIELD_SIZE : 0); + + auth_offset = req->cryptlen ? + (req->assoclen + IV + 1 + ccm_xtra) : 0; + if (op_type == CHCR_DECRYPT_OP) { + if (crypto_aead_authsize(tfm) != req->cryptlen) + tag_offset = crypto_aead_authsize(tfm); + else + auth_offset = 0; + } + + sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 1); + sec_cpl->pldlen = + htonl(req->assoclen + IV + req->cryptlen + ccm_xtra); + /* For CCM there wil be b0 always. So AAD start will be 1 always */ + sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI( + 1 + IV, IV + assoclen + ccm_xtra, + req->assoclen + IV + 1 + ccm_xtra, 0); + + sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0, + auth_offset, tag_offset, + (op_type == CHCR_ENCRYPT_OP) ? 0 : + crypto_aead_authsize(tfm)); + sec_cpl->seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type, + (op_type == CHCR_ENCRYPT_OP) ? 0 : 1, + cipher_mode, mac_mode, + aeadctx->hmac_ctrl, IV >> 1); + + sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0, + 0, dst_size); +} + +static int aead_ccm_validate_input(unsigned short op_type, + struct aead_request *req, + struct chcr_aead_ctx *aeadctx, + unsigned int sub_type) +{ + if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) { + if (crypto_ccm_check_iv(req->iv)) { + pr_err("CCM: IV check fails\n"); + return -EINVAL; + } + } else { + if (req->assoclen != 16 && req->assoclen != 20) { + pr_err("RFC4309: Invalid AAD length %d\n", + req->assoclen); + return -EINVAL; + } + } + return 0; +} + +static struct sk_buff *create_aead_ccm_wr(struct aead_request *req, + unsigned short qid, + int size) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct sk_buff *skb = NULL; + struct chcr_wr *chcr_req; + struct cpl_rx_phys_dsgl *phys_cpl; + struct ulptx_sgl *ulptx; + unsigned int transhdr_len; + unsigned int dst_size = 0, kctx_len, dnents, temp, snents; + unsigned int sub_type, assoclen = req->assoclen; + unsigned int authsize = crypto_aead_authsize(tfm); + int error = -EINVAL; + u8 *ivptr; + gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : + GFP_ATOMIC; + struct adapter *adap = padap(a_ctx(tfm)->dev); + + sub_type = get_aead_subtype(tfm); + if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) + assoclen -= 8; + reqctx->b0_len = CCM_B0_SIZE + (assoclen ? CCM_AAD_FIELD_SIZE : 0); + error = chcr_aead_common_init(req); + if (error) + return ERR_PTR(error); + + error = aead_ccm_validate_input(reqctx->op, req, aeadctx, sub_type); + if (error) + goto err; + dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen + + (reqctx->op ? -authsize : authsize), + CHCR_DST_SG_SIZE, 0); + dnents += MIN_CCM_SG; // For IV and B0 + dst_size = get_space_for_phys_dsgl(dnents); + snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen, + CHCR_SRC_SG_SIZE, 0); + snents += MIN_CCM_SG; //For B0 + kctx_len = roundup(aeadctx->enckey_len, 16) * 2; + transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); + reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen + + reqctx->b0_len) <= SGE_MAX_WR_LEN; + temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen + + reqctx->b0_len, 16) : + (sgl_len(snents) * 8); + transhdr_len += temp; + transhdr_len = roundup(transhdr_len, 16); + + if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE - + reqctx->b0_len, transhdr_len, reqctx->op)) { + atomic_inc(&adap->chcr_stats.fallback); + chcr_aead_common_exit(req); + return ERR_PTR(chcr_aead_fallback(req, reqctx->op)); + } + skb = alloc_skb(transhdr_len, flags); + + if (!skb) { + error = -ENOMEM; + goto err; + } + + chcr_req = __skb_put_zero(skb, transhdr_len); + + fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, reqctx->op); + + chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr; + memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len); + memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16), + aeadctx->key, aeadctx->enckey_len); + + phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); + ivptr = (u8 *)(phys_cpl + 1) + dst_size; + ulptx = (struct ulptx_sgl *)(ivptr + IV); + error = ccm_format_packet(req, ivptr, sub_type, reqctx->op, assoclen); + if (error) + goto dstmap_fail; + chcr_add_aead_dst_ent(req, phys_cpl, qid); + chcr_add_aead_src_ent(req, ulptx); + + atomic_inc(&adap->chcr_stats.aead_rqst); + temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV + + kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen + + reqctx->b0_len) : 0); + create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0, + transhdr_len, temp, 0); + reqctx->skb = skb; + + return skb; +dstmap_fail: + kfree_skb(skb); +err: + chcr_aead_common_exit(req); + return ERR_PTR(error); +} + +static struct sk_buff *create_gcm_wr(struct aead_request *req, + unsigned short qid, + int size) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_context *ctx = a_ctx(tfm); + struct uld_ctx *u_ctx = ULD_CTX(ctx); + struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx); + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct sk_buff *skb = NULL; + struct chcr_wr *chcr_req; + struct cpl_rx_phys_dsgl *phys_cpl; + struct ulptx_sgl *ulptx; + unsigned int transhdr_len, dnents = 0, snents; + unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen; + unsigned int authsize = crypto_aead_authsize(tfm); + int error = -EINVAL; + u8 *ivptr; + gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : + GFP_ATOMIC; + struct adapter *adap = padap(ctx->dev); + unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan; + + rx_channel_id = cxgb4_port_e2cchan(u_ctx->lldi.ports[rx_channel_id]); + if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) + assoclen = req->assoclen - 8; + + reqctx->b0_len = 0; + error = chcr_aead_common_init(req); + if (error) + return ERR_PTR(error); + dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen + + (reqctx->op ? -authsize : authsize), + CHCR_DST_SG_SIZE, 0); + snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen, + CHCR_SRC_SG_SIZE, 0); + dnents += MIN_GCM_SG; // For IV + dst_size = get_space_for_phys_dsgl(dnents); + kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE; + transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); + reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) <= + SGE_MAX_WR_LEN; + temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16) : + (sgl_len(snents) * 8); + transhdr_len += temp; + transhdr_len = roundup(transhdr_len, 16); + if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE, + transhdr_len, reqctx->op)) { + + atomic_inc(&adap->chcr_stats.fallback); + chcr_aead_common_exit(req); + return ERR_PTR(chcr_aead_fallback(req, reqctx->op)); + } + skb = alloc_skb(transhdr_len, flags); + if (!skb) { + error = -ENOMEM; + goto err; + } + + chcr_req = __skb_put_zero(skb, transhdr_len); + + //Offset of tag from end + temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize; + chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR( + rx_channel_id, 2, 1); + chcr_req->sec_cpl.pldlen = + htonl(req->assoclen + IV + req->cryptlen); + chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI( + assoclen ? 1 + IV : 0, + assoclen ? IV + assoclen : 0, + req->assoclen + IV + 1, 0); + chcr_req->sec_cpl.cipherstop_lo_authinsert = + FILL_SEC_CPL_AUTHINSERT(0, req->assoclen + IV + 1, + temp, temp); + chcr_req->sec_cpl.seqno_numivs = + FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, (reqctx->op == + CHCR_ENCRYPT_OP) ? 1 : 0, + CHCR_SCMD_CIPHER_MODE_AES_GCM, + CHCR_SCMD_AUTH_MODE_GHASH, + aeadctx->hmac_ctrl, IV >> 1); + chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, + 0, 0, dst_size); + chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr; + memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len); + memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16), + GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE); + + phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); + ivptr = (u8 *)(phys_cpl + 1) + dst_size; + /* prepare a 16 byte iv */ + /* S A L T | IV | 0x00000001 */ + if (get_aead_subtype(tfm) == + CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) { + memcpy(ivptr, aeadctx->salt, 4); + memcpy(ivptr + 4, req->iv, GCM_RFC4106_IV_SIZE); + } else { + memcpy(ivptr, req->iv, GCM_AES_IV_SIZE); + } + put_unaligned_be32(0x01, &ivptr[12]); + ulptx = (struct ulptx_sgl *)(ivptr + 16); + + chcr_add_aead_dst_ent(req, phys_cpl, qid); + chcr_add_aead_src_ent(req, ulptx); + atomic_inc(&adap->chcr_stats.aead_rqst); + temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV + + kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0); + create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size, + transhdr_len, temp, reqctx->verify); + reqctx->skb = skb; + return skb; + +err: + chcr_aead_common_exit(req); + return ERR_PTR(error); +} + + + +static int chcr_aead_cra_init(struct crypto_aead *tfm) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + struct aead_alg *alg = crypto_aead_alg(tfm); + + aeadctx->sw_cipher = crypto_alloc_aead(alg->base.cra_name, 0, + CRYPTO_ALG_NEED_FALLBACK | + CRYPTO_ALG_ASYNC); + if (IS_ERR(aeadctx->sw_cipher)) + return PTR_ERR(aeadctx->sw_cipher); + crypto_aead_set_reqsize(tfm, max(sizeof(struct chcr_aead_reqctx), + sizeof(struct aead_request) + + crypto_aead_reqsize(aeadctx->sw_cipher))); + return chcr_device_init(a_ctx(tfm)); +} + +static void chcr_aead_cra_exit(struct crypto_aead *tfm) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + + crypto_free_aead(aeadctx->sw_cipher); +} + +static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP; + aeadctx->mayverify = VERIFY_HW; + return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); +} +static int chcr_authenc_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + u32 maxauth = crypto_aead_maxauthsize(tfm); + + /*SHA1 authsize in ipsec is 12 instead of 10 i.e maxauthsize / 2 is not + * true for sha1. authsize == 12 condition should be before + * authsize == (maxauth >> 1) + */ + if (authsize == ICV_4) { + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1; + aeadctx->mayverify = VERIFY_HW; + } else if (authsize == ICV_6) { + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2; + aeadctx->mayverify = VERIFY_HW; + } else if (authsize == ICV_10) { + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366; + aeadctx->mayverify = VERIFY_HW; + } else if (authsize == ICV_12) { + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; + aeadctx->mayverify = VERIFY_HW; + } else if (authsize == ICV_14) { + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3; + aeadctx->mayverify = VERIFY_HW; + } else if (authsize == (maxauth >> 1)) { + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; + aeadctx->mayverify = VERIFY_HW; + } else if (authsize == maxauth) { + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; + aeadctx->mayverify = VERIFY_HW; + } else { + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; + aeadctx->mayverify = VERIFY_SW; + } + return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); +} + + +static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + + switch (authsize) { + case ICV_4: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_8: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_12: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_14: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_16: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_13: + case ICV_15: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; + aeadctx->mayverify = VERIFY_SW; + break; + default: + return -EINVAL; + } + return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); +} + +static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + + switch (authsize) { + case ICV_8: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_12: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_16: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; + aeadctx->mayverify = VERIFY_HW; + break; + default: + return -EINVAL; + } + return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); +} + +static int chcr_ccm_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); + + switch (authsize) { + case ICV_4: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_6: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_8: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_10: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_12: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_14: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3; + aeadctx->mayverify = VERIFY_HW; + break; + case ICV_16: + aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; + aeadctx->mayverify = VERIFY_HW; + break; + default: + return -EINVAL; + } + return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); +} + +static int chcr_ccm_common_setkey(struct crypto_aead *aead, + const u8 *key, + unsigned int keylen) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); + unsigned char ck_size, mk_size; + int key_ctx_size = 0; + + key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) * 2; + if (keylen == AES_KEYSIZE_128) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; + mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128; + } else if (keylen == AES_KEYSIZE_192) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; + mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_192; + } else if (keylen == AES_KEYSIZE_256) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; + mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; + } else { + aeadctx->enckey_len = 0; + return -EINVAL; + } + aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0, + key_ctx_size >> 4); + memcpy(aeadctx->key, key, keylen); + aeadctx->enckey_len = keylen; + + return 0; +} + +static int chcr_aead_ccm_setkey(struct crypto_aead *aead, + const u8 *key, + unsigned int keylen) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); + int error; + + crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); + crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) & + CRYPTO_TFM_REQ_MASK); + error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); + if (error) + return error; + return chcr_ccm_common_setkey(aead, key, keylen); +} + +static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key, + unsigned int keylen) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); + int error; + + if (keylen < 3) { + aeadctx->enckey_len = 0; + return -EINVAL; + } + crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); + crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) & + CRYPTO_TFM_REQ_MASK); + error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); + if (error) + return error; + keylen -= 3; + memcpy(aeadctx->salt, key + keylen, 3); + return chcr_ccm_common_setkey(aead, key, keylen); +} + +static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key, + unsigned int keylen) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); + struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx); + unsigned int ck_size; + int ret = 0, key_ctx_size = 0; + struct crypto_aes_ctx aes; + + aeadctx->enckey_len = 0; + crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); + crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) + & CRYPTO_TFM_REQ_MASK); + ret = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); + if (ret) + goto out; + + if (get_aead_subtype(aead) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 && + keylen > 3) { + keylen -= 4; /* nonce/salt is present in the last 4 bytes */ + memcpy(aeadctx->salt, key + keylen, 4); + } + if (keylen == AES_KEYSIZE_128) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; + } else if (keylen == AES_KEYSIZE_192) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; + } else if (keylen == AES_KEYSIZE_256) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; + } else { + pr_err("GCM: Invalid key length %d\n", keylen); + ret = -EINVAL; + goto out; + } + + memcpy(aeadctx->key, key, keylen); + aeadctx->enckey_len = keylen; + key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) + + AEAD_H_SIZE; + aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, + CHCR_KEYCTX_MAC_KEY_SIZE_128, + 0, 0, + key_ctx_size >> 4); + /* Calculate the H = CIPH(K, 0 repeated 16 times). + * It will go in key context + */ + ret = aes_expandkey(&aes, key, keylen); + if (ret) { + aeadctx->enckey_len = 0; + goto out; + } + memset(gctx->ghash_h, 0, AEAD_H_SIZE); + aes_encrypt(&aes, gctx->ghash_h, gctx->ghash_h); + memzero_explicit(&aes, sizeof(aes)); + +out: + return ret; +} + +static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key, + unsigned int keylen) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc)); + struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx); + /* it contains auth and cipher key both*/ + struct crypto_authenc_keys keys; + unsigned int bs, subtype; + unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize; + int err = 0, i, key_ctx_len = 0; + unsigned char ck_size = 0; + unsigned char pad[CHCR_HASH_MAX_BLOCK_SIZE_128] = { 0 }; + struct crypto_shash *base_hash = ERR_PTR(-EINVAL); + struct algo_param param; + int align; + u8 *o_ptr = NULL; + + crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); + crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc) + & CRYPTO_TFM_REQ_MASK); + err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); + if (err) + goto out; + + if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) + goto out; + + if (get_alg_config(¶m, max_authsize)) { + pr_err("Unsupported digest size\n"); + goto out; + } + subtype = get_aead_subtype(authenc); + if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || + subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { + if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE) + goto out; + memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen + - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE); + keys.enckeylen -= CTR_RFC3686_NONCE_SIZE; + } + if (keys.enckeylen == AES_KEYSIZE_128) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; + } else if (keys.enckeylen == AES_KEYSIZE_192) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; + } else if (keys.enckeylen == AES_KEYSIZE_256) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; + } else { + pr_err("Unsupported cipher key\n"); + goto out; + } + + /* Copy only encryption key. We use authkey to generate h(ipad) and + * h(opad) so authkey is not needed again. authkeylen size have the + * size of the hash digest size. + */ + memcpy(aeadctx->key, keys.enckey, keys.enckeylen); + aeadctx->enckey_len = keys.enckeylen; + if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA || + subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) { + + get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key, + aeadctx->enckey_len << 3); + } + base_hash = chcr_alloc_shash(max_authsize); + if (IS_ERR(base_hash)) { + pr_err("Base driver cannot be loaded\n"); + goto out; + } + { + SHASH_DESC_ON_STACK(shash, base_hash); + + shash->tfm = base_hash; + bs = crypto_shash_blocksize(base_hash); + align = KEYCTX_ALIGN_PAD(max_authsize); + o_ptr = actx->h_iopad + param.result_size + align; + + if (keys.authkeylen > bs) { + err = crypto_shash_digest(shash, keys.authkey, + keys.authkeylen, + o_ptr); + if (err) { + pr_err("Base driver cannot be loaded\n"); + goto out; + } + keys.authkeylen = max_authsize; + } else + memcpy(o_ptr, keys.authkey, keys.authkeylen); + + /* Compute the ipad-digest*/ + memset(pad + keys.authkeylen, 0, bs - keys.authkeylen); + memcpy(pad, o_ptr, keys.authkeylen); + for (i = 0; i < bs >> 2; i++) + *((unsigned int *)pad + i) ^= IPAD_DATA; + + if (chcr_compute_partial_hash(shash, pad, actx->h_iopad, + max_authsize)) + goto out; + /* Compute the opad-digest */ + memset(pad + keys.authkeylen, 0, bs - keys.authkeylen); + memcpy(pad, o_ptr, keys.authkeylen); + for (i = 0; i < bs >> 2; i++) + *((unsigned int *)pad + i) ^= OPAD_DATA; + + if (chcr_compute_partial_hash(shash, pad, o_ptr, max_authsize)) + goto out; + + /* convert the ipad and opad digest to network order */ + chcr_change_order(actx->h_iopad, param.result_size); + chcr_change_order(o_ptr, param.result_size); + key_ctx_len = sizeof(struct _key_ctx) + + roundup(keys.enckeylen, 16) + + (param.result_size + align) * 2; + aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, param.mk_size, + 0, 1, key_ctx_len >> 4); + actx->auth_mode = param.auth_mode; + chcr_free_shash(base_hash); + + memzero_explicit(&keys, sizeof(keys)); + return 0; + } +out: + aeadctx->enckey_len = 0; + memzero_explicit(&keys, sizeof(keys)); + if (!IS_ERR(base_hash)) + chcr_free_shash(base_hash); + return -EINVAL; +} + +static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc, + const u8 *key, unsigned int keylen) +{ + struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc)); + struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx); + struct crypto_authenc_keys keys; + int err; + /* it contains auth and cipher key both*/ + unsigned int subtype; + int key_ctx_len = 0; + unsigned char ck_size = 0; + + crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); + crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc) + & CRYPTO_TFM_REQ_MASK); + err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); + if (err) + goto out; + + if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) + goto out; + + subtype = get_aead_subtype(authenc); + if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || + subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { + if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE) + goto out; + memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen + - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE); + keys.enckeylen -= CTR_RFC3686_NONCE_SIZE; + } + if (keys.enckeylen == AES_KEYSIZE_128) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; + } else if (keys.enckeylen == AES_KEYSIZE_192) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; + } else if (keys.enckeylen == AES_KEYSIZE_256) { + ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; + } else { + pr_err("Unsupported cipher key %d\n", keys.enckeylen); + goto out; + } + memcpy(aeadctx->key, keys.enckey, keys.enckeylen); + aeadctx->enckey_len = keys.enckeylen; + if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA || + subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) { + get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key, + aeadctx->enckey_len << 3); + } + key_ctx_len = sizeof(struct _key_ctx) + roundup(keys.enckeylen, 16); + + aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0, + 0, key_ctx_len >> 4); + actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP; + memzero_explicit(&keys, sizeof(keys)); + return 0; +out: + aeadctx->enckey_len = 0; + memzero_explicit(&keys, sizeof(keys)); + return -EINVAL; +} + +static int chcr_aead_op(struct aead_request *req, + int size, + create_wr_t create_wr_fn) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct chcr_context *ctx = a_ctx(tfm); + struct uld_ctx *u_ctx = ULD_CTX(ctx); + struct sk_buff *skb; + struct chcr_dev *cdev; + + cdev = a_ctx(tfm)->dev; + if (!cdev) { + pr_err("%s : No crypto device.\n", __func__); + return -ENXIO; + } + + if (chcr_inc_wrcount(cdev)) { + /* Detach state for CHCR means lldi or padap is freed. + * We cannot increment fallback here. + */ + return chcr_aead_fallback(req, reqctx->op); + } + + if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], + reqctx->txqidx) && + (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))) { + chcr_dec_wrcount(cdev); + return -ENOSPC; + } + + if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 && + crypto_ipsec_check_assoclen(req->assoclen) != 0) { + pr_err("RFC4106: Invalid value of assoclen %d\n", + req->assoclen); + return -EINVAL; + } + + /* Form a WR from req */ + skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[reqctx->rxqidx], size); + + if (IS_ERR_OR_NULL(skb)) { + chcr_dec_wrcount(cdev); + return PTR_ERR_OR_ZERO(skb); + } + + skb->dev = u_ctx->lldi.ports[0]; + set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx); + chcr_send_wr(skb); + return -EINPROGRESS; +} + +static int chcr_aead_encrypt(struct aead_request *req) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + struct chcr_context *ctx = a_ctx(tfm); + unsigned int cpu; + + cpu = get_cpu(); + reqctx->txqidx = cpu % ctx->ntxq; + reqctx->rxqidx = cpu % ctx->nrxq; + put_cpu(); + + reqctx->verify = VERIFY_HW; + reqctx->op = CHCR_ENCRYPT_OP; + + switch (get_aead_subtype(tfm)) { + case CRYPTO_ALG_SUB_TYPE_CTR_SHA: + case CRYPTO_ALG_SUB_TYPE_CBC_SHA: + case CRYPTO_ALG_SUB_TYPE_CBC_NULL: + case CRYPTO_ALG_SUB_TYPE_CTR_NULL: + return chcr_aead_op(req, 0, create_authenc_wr); + case CRYPTO_ALG_SUB_TYPE_AEAD_CCM: + case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309: + return chcr_aead_op(req, 0, create_aead_ccm_wr); + default: + return chcr_aead_op(req, 0, create_gcm_wr); + } +} + +static int chcr_aead_decrypt(struct aead_request *req) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct chcr_context *ctx = a_ctx(tfm); + struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx); + struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); + int size; + unsigned int cpu; + + cpu = get_cpu(); + reqctx->txqidx = cpu % ctx->ntxq; + reqctx->rxqidx = cpu % ctx->nrxq; + put_cpu(); + + if (aeadctx->mayverify == VERIFY_SW) { + size = crypto_aead_maxauthsize(tfm); + reqctx->verify = VERIFY_SW; + } else { + size = 0; + reqctx->verify = VERIFY_HW; + } + reqctx->op = CHCR_DECRYPT_OP; + switch (get_aead_subtype(tfm)) { + case CRYPTO_ALG_SUB_TYPE_CBC_SHA: + case CRYPTO_ALG_SUB_TYPE_CTR_SHA: + case CRYPTO_ALG_SUB_TYPE_CBC_NULL: + case CRYPTO_ALG_SUB_TYPE_CTR_NULL: + return chcr_aead_op(req, size, create_authenc_wr); + case CRYPTO_ALG_SUB_TYPE_AEAD_CCM: + case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309: + return chcr_aead_op(req, size, create_aead_ccm_wr); + default: + return chcr_aead_op(req, size, create_gcm_wr); + } +} + +static struct chcr_alg_template driver_algs[] = { + /* AES-CBC */ + { + .type = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_SUB_TYPE_CBC, + .is_registered = 0, + .alg.skcipher = { + .base.cra_name = "cbc(aes)", + .base.cra_driver_name = "cbc-aes-chcr", + .base.cra_blocksize = AES_BLOCK_SIZE, + + .init = chcr_init_tfm, + .exit = chcr_exit_tfm, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + .setkey = chcr_aes_cbc_setkey, + .encrypt = chcr_aes_encrypt, + .decrypt = chcr_aes_decrypt, + } + }, + { + .type = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_SUB_TYPE_XTS, + .is_registered = 0, + .alg.skcipher = { + .base.cra_name = "xts(aes)", + .base.cra_driver_name = "xts-aes-chcr", + .base.cra_blocksize = AES_BLOCK_SIZE, + + .init = chcr_init_tfm, + .exit = chcr_exit_tfm, + .min_keysize = 2 * AES_MIN_KEY_SIZE, + .max_keysize = 2 * AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + .setkey = chcr_aes_xts_setkey, + .encrypt = chcr_aes_encrypt, + .decrypt = chcr_aes_decrypt, + } + }, + { + .type = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_SUB_TYPE_CTR, + .is_registered = 0, + .alg.skcipher = { + .base.cra_name = "ctr(aes)", + .base.cra_driver_name = "ctr-aes-chcr", + .base.cra_blocksize = 1, + + .init = chcr_init_tfm, + .exit = chcr_exit_tfm, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + .setkey = chcr_aes_ctr_setkey, + .encrypt = chcr_aes_encrypt, + .decrypt = chcr_aes_decrypt, + } + }, + { + .type = CRYPTO_ALG_TYPE_SKCIPHER | + CRYPTO_ALG_SUB_TYPE_CTR_RFC3686, + .is_registered = 0, + .alg.skcipher = { + .base.cra_name = "rfc3686(ctr(aes))", + .base.cra_driver_name = "rfc3686-ctr-aes-chcr", + .base.cra_blocksize = 1, + + .init = chcr_rfc3686_init, + .exit = chcr_exit_tfm, + .min_keysize = AES_MIN_KEY_SIZE + CTR_RFC3686_NONCE_SIZE, + .max_keysize = AES_MAX_KEY_SIZE + CTR_RFC3686_NONCE_SIZE, + .ivsize = CTR_RFC3686_IV_SIZE, + .setkey = chcr_aes_rfc3686_setkey, + .encrypt = chcr_aes_encrypt, + .decrypt = chcr_aes_decrypt, + } + }, + /* SHA */ + { + .type = CRYPTO_ALG_TYPE_AHASH, + .is_registered = 0, + .alg.hash = { + .halg.digestsize = SHA1_DIGEST_SIZE, + .halg.base = { + .cra_name = "sha1", + .cra_driver_name = "sha1-chcr", + .cra_blocksize = SHA1_BLOCK_SIZE, + } + } + }, + { + .type = CRYPTO_ALG_TYPE_AHASH, + .is_registered = 0, + .alg.hash = { + .halg.digestsize = SHA256_DIGEST_SIZE, + .halg.base = { + .cra_name = "sha256", + .cra_driver_name = "sha256-chcr", + .cra_blocksize = SHA256_BLOCK_SIZE, + } + } + }, + { + .type = CRYPTO_ALG_TYPE_AHASH, + .is_registered = 0, + .alg.hash = { + .halg.digestsize = SHA224_DIGEST_SIZE, + .halg.base = { + .cra_name = "sha224", + .cra_driver_name = "sha224-chcr", + .cra_blocksize = SHA224_BLOCK_SIZE, + } + } + }, + { + .type = CRYPTO_ALG_TYPE_AHASH, + .is_registered = 0, + .alg.hash = { + .halg.digestsize = SHA384_DIGEST_SIZE, + .halg.base = { + .cra_name = "sha384", + .cra_driver_name = "sha384-chcr", + .cra_blocksize = SHA384_BLOCK_SIZE, + } + } + }, + { + .type = CRYPTO_ALG_TYPE_AHASH, + .is_registered = 0, + .alg.hash = { + .halg.digestsize = SHA512_DIGEST_SIZE, + .halg.base = { + .cra_name = "sha512", + .cra_driver_name = "sha512-chcr", + .cra_blocksize = SHA512_BLOCK_SIZE, + } + } + }, + /* HMAC */ + { + .type = CRYPTO_ALG_TYPE_HMAC, + .is_registered = 0, + .alg.hash = { + .halg.digestsize = SHA1_DIGEST_SIZE, + .halg.base = { + .cra_name = "hmac(sha1)", + .cra_driver_name = "hmac-sha1-chcr", + .cra_blocksize = SHA1_BLOCK_SIZE, + } + } + }, + { + .type = CRYPTO_ALG_TYPE_HMAC, + .is_registered = 0, + .alg.hash = { + .halg.digestsize = SHA224_DIGEST_SIZE, + .halg.base = { + .cra_name = "hmac(sha224)", + .cra_driver_name = "hmac-sha224-chcr", + .cra_blocksize = SHA224_BLOCK_SIZE, + } + } + }, + { + .type = CRYPTO_ALG_TYPE_HMAC, + .is_registered = 0, + .alg.hash = { + .halg.digestsize = SHA256_DIGEST_SIZE, + .halg.base = { + .cra_name = "hmac(sha256)", + .cra_driver_name = "hmac-sha256-chcr", + .cra_blocksize = SHA256_BLOCK_SIZE, + } + } + }, + { + .type = CRYPTO_ALG_TYPE_HMAC, + .is_registered = 0, + .alg.hash = { + .halg.digestsize = SHA384_DIGEST_SIZE, + .halg.base = { + .cra_name = "hmac(sha384)", + .cra_driver_name = "hmac-sha384-chcr", + .cra_blocksize = SHA384_BLOCK_SIZE, + } + } + }, + { + .type = CRYPTO_ALG_TYPE_HMAC, + .is_registered = 0, + .alg.hash = { + .halg.digestsize = SHA512_DIGEST_SIZE, + .halg.base = { + .cra_name = "hmac(sha512)", + .cra_driver_name = "hmac-sha512-chcr", + .cra_blocksize = SHA512_BLOCK_SIZE, + } + } + }, + /* Add AEAD Algorithms */ + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_GCM, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "gcm(aes)", + .cra_driver_name = "gcm-aes-chcr", + .cra_blocksize = 1, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_gcm_ctx), + }, + .ivsize = GCM_AES_IV_SIZE, + .maxauthsize = GHASH_DIGEST_SIZE, + .setkey = chcr_gcm_setkey, + .setauthsize = chcr_gcm_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "rfc4106(gcm(aes))", + .cra_driver_name = "rfc4106-gcm-aes-chcr", + .cra_blocksize = 1, + .cra_priority = CHCR_AEAD_PRIORITY + 1, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_gcm_ctx), + + }, + .ivsize = GCM_RFC4106_IV_SIZE, + .maxauthsize = GHASH_DIGEST_SIZE, + .setkey = chcr_gcm_setkey, + .setauthsize = chcr_4106_4309_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_CCM, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "ccm(aes)", + .cra_driver_name = "ccm-aes-chcr", + .cra_blocksize = 1, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx), + + }, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = GHASH_DIGEST_SIZE, + .setkey = chcr_aead_ccm_setkey, + .setauthsize = chcr_ccm_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "rfc4309(ccm(aes))", + .cra_driver_name = "rfc4309-ccm-aes-chcr", + .cra_blocksize = 1, + .cra_priority = CHCR_AEAD_PRIORITY + 1, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx), + + }, + .ivsize = 8, + .maxauthsize = GHASH_DIGEST_SIZE, + .setkey = chcr_aead_rfc4309_setkey, + .setauthsize = chcr_4106_4309_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "authenc(hmac(sha1),cbc(aes))", + .cra_driver_name = + "authenc-hmac-sha1-cbc-aes-chcr", + .cra_blocksize = AES_BLOCK_SIZE, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + + }, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = SHA1_DIGEST_SIZE, + .setkey = chcr_authenc_setkey, + .setauthsize = chcr_authenc_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, + .is_registered = 0, + .alg.aead = { + .base = { + + .cra_name = "authenc(hmac(sha256),cbc(aes))", + .cra_driver_name = + "authenc-hmac-sha256-cbc-aes-chcr", + .cra_blocksize = AES_BLOCK_SIZE, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + + }, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = SHA256_DIGEST_SIZE, + .setkey = chcr_authenc_setkey, + .setauthsize = chcr_authenc_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "authenc(hmac(sha224),cbc(aes))", + .cra_driver_name = + "authenc-hmac-sha224-cbc-aes-chcr", + .cra_blocksize = AES_BLOCK_SIZE, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + }, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = SHA224_DIGEST_SIZE, + .setkey = chcr_authenc_setkey, + .setauthsize = chcr_authenc_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "authenc(hmac(sha384),cbc(aes))", + .cra_driver_name = + "authenc-hmac-sha384-cbc-aes-chcr", + .cra_blocksize = AES_BLOCK_SIZE, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + + }, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = SHA384_DIGEST_SIZE, + .setkey = chcr_authenc_setkey, + .setauthsize = chcr_authenc_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "authenc(hmac(sha512),cbc(aes))", + .cra_driver_name = + "authenc-hmac-sha512-cbc-aes-chcr", + .cra_blocksize = AES_BLOCK_SIZE, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + + }, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = SHA512_DIGEST_SIZE, + .setkey = chcr_authenc_setkey, + .setauthsize = chcr_authenc_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_NULL, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "authenc(digest_null,cbc(aes))", + .cra_driver_name = + "authenc-digest_null-cbc-aes-chcr", + .cra_blocksize = AES_BLOCK_SIZE, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + + }, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = 0, + .setkey = chcr_aead_digest_null_setkey, + .setauthsize = chcr_authenc_null_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))", + .cra_driver_name = + "authenc-hmac-sha1-rfc3686-ctr-aes-chcr", + .cra_blocksize = 1, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + + }, + .ivsize = CTR_RFC3686_IV_SIZE, + .maxauthsize = SHA1_DIGEST_SIZE, + .setkey = chcr_authenc_setkey, + .setauthsize = chcr_authenc_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, + .is_registered = 0, + .alg.aead = { + .base = { + + .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))", + .cra_driver_name = + "authenc-hmac-sha256-rfc3686-ctr-aes-chcr", + .cra_blocksize = 1, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + + }, + .ivsize = CTR_RFC3686_IV_SIZE, + .maxauthsize = SHA256_DIGEST_SIZE, + .setkey = chcr_authenc_setkey, + .setauthsize = chcr_authenc_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))", + .cra_driver_name = + "authenc-hmac-sha224-rfc3686-ctr-aes-chcr", + .cra_blocksize = 1, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + }, + .ivsize = CTR_RFC3686_IV_SIZE, + .maxauthsize = SHA224_DIGEST_SIZE, + .setkey = chcr_authenc_setkey, + .setauthsize = chcr_authenc_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))", + .cra_driver_name = + "authenc-hmac-sha384-rfc3686-ctr-aes-chcr", + .cra_blocksize = 1, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + + }, + .ivsize = CTR_RFC3686_IV_SIZE, + .maxauthsize = SHA384_DIGEST_SIZE, + .setkey = chcr_authenc_setkey, + .setauthsize = chcr_authenc_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))", + .cra_driver_name = + "authenc-hmac-sha512-rfc3686-ctr-aes-chcr", + .cra_blocksize = 1, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + + }, + .ivsize = CTR_RFC3686_IV_SIZE, + .maxauthsize = SHA512_DIGEST_SIZE, + .setkey = chcr_authenc_setkey, + .setauthsize = chcr_authenc_setauthsize, + } + }, + { + .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL, + .is_registered = 0, + .alg.aead = { + .base = { + .cra_name = "authenc(digest_null,rfc3686(ctr(aes)))", + .cra_driver_name = + "authenc-digest_null-rfc3686-ctr-aes-chcr", + .cra_blocksize = 1, + .cra_priority = CHCR_AEAD_PRIORITY, + .cra_ctxsize = sizeof(struct chcr_context) + + sizeof(struct chcr_aead_ctx) + + sizeof(struct chcr_authenc_ctx), + + }, + .ivsize = CTR_RFC3686_IV_SIZE, + .maxauthsize = 0, + .setkey = chcr_aead_digest_null_setkey, + .setauthsize = chcr_authenc_null_setauthsize, + } + }, +}; + +/* + * chcr_unregister_alg - Deregister crypto algorithms with + * kernel framework. + */ +static int chcr_unregister_alg(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { + switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) { + case CRYPTO_ALG_TYPE_SKCIPHER: + if (driver_algs[i].is_registered && refcount_read( + &driver_algs[i].alg.skcipher.base.cra_refcnt) + == 1) { + crypto_unregister_skcipher( + &driver_algs[i].alg.skcipher); + driver_algs[i].is_registered = 0; + } + break; + case CRYPTO_ALG_TYPE_AEAD: + if (driver_algs[i].is_registered && refcount_read( + &driver_algs[i].alg.aead.base.cra_refcnt) == 1) { + crypto_unregister_aead( + &driver_algs[i].alg.aead); + driver_algs[i].is_registered = 0; + } + break; + case CRYPTO_ALG_TYPE_AHASH: + if (driver_algs[i].is_registered && refcount_read( + &driver_algs[i].alg.hash.halg.base.cra_refcnt) + == 1) { + crypto_unregister_ahash( + &driver_algs[i].alg.hash); + driver_algs[i].is_registered = 0; + } + break; + } + } + return 0; +} + +#define SZ_AHASH_CTX sizeof(struct chcr_context) +#define SZ_AHASH_H_CTX (sizeof(struct chcr_context) + sizeof(struct hmac_ctx)) +#define SZ_AHASH_REQ_CTX sizeof(struct chcr_ahash_req_ctx) + +/* + * chcr_register_alg - Register crypto algorithms with kernel framework. + */ +static int chcr_register_alg(void) +{ + struct crypto_alg ai; + struct ahash_alg *a_hash; + int err = 0, i; + char *name = NULL; + + for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { + if (driver_algs[i].is_registered) + continue; + switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) { + case CRYPTO_ALG_TYPE_SKCIPHER: + driver_algs[i].alg.skcipher.base.cra_priority = + CHCR_CRA_PRIORITY; + driver_algs[i].alg.skcipher.base.cra_module = THIS_MODULE; + driver_algs[i].alg.skcipher.base.cra_flags = + CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY | + CRYPTO_ALG_NEED_FALLBACK; + driver_algs[i].alg.skcipher.base.cra_ctxsize = + sizeof(struct chcr_context) + + sizeof(struct ablk_ctx); + driver_algs[i].alg.skcipher.base.cra_alignmask = 0; + + err = crypto_register_skcipher(&driver_algs[i].alg.skcipher); + name = driver_algs[i].alg.skcipher.base.cra_driver_name; + break; + case CRYPTO_ALG_TYPE_AEAD: + driver_algs[i].alg.aead.base.cra_flags = + CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK | + CRYPTO_ALG_ALLOCATES_MEMORY; + driver_algs[i].alg.aead.encrypt = chcr_aead_encrypt; + driver_algs[i].alg.aead.decrypt = chcr_aead_decrypt; + driver_algs[i].alg.aead.init = chcr_aead_cra_init; + driver_algs[i].alg.aead.exit = chcr_aead_cra_exit; + driver_algs[i].alg.aead.base.cra_module = THIS_MODULE; + err = crypto_register_aead(&driver_algs[i].alg.aead); + name = driver_algs[i].alg.aead.base.cra_driver_name; + break; + case CRYPTO_ALG_TYPE_AHASH: + a_hash = &driver_algs[i].alg.hash; + a_hash->update = chcr_ahash_update; + a_hash->final = chcr_ahash_final; + a_hash->finup = chcr_ahash_finup; + a_hash->digest = chcr_ahash_digest; + a_hash->export = chcr_ahash_export; + a_hash->import = chcr_ahash_import; + a_hash->halg.statesize = SZ_AHASH_REQ_CTX; + a_hash->halg.base.cra_priority = CHCR_CRA_PRIORITY; + a_hash->halg.base.cra_module = THIS_MODULE; + a_hash->halg.base.cra_flags = + CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY; + a_hash->halg.base.cra_alignmask = 0; + a_hash->halg.base.cra_exit = NULL; + + if (driver_algs[i].type == CRYPTO_ALG_TYPE_HMAC) { + a_hash->halg.base.cra_init = chcr_hmac_cra_init; + a_hash->halg.base.cra_exit = chcr_hmac_cra_exit; + a_hash->init = chcr_hmac_init; + a_hash->setkey = chcr_ahash_setkey; + a_hash->halg.base.cra_ctxsize = SZ_AHASH_H_CTX; + } else { + a_hash->init = chcr_sha_init; + a_hash->halg.base.cra_ctxsize = SZ_AHASH_CTX; + a_hash->halg.base.cra_init = chcr_sha_cra_init; + } + err = crypto_register_ahash(&driver_algs[i].alg.hash); + ai = driver_algs[i].alg.hash.halg.base; + name = ai.cra_driver_name; + break; + } + if (err) { + pr_err("%s : Algorithm registration failed\n", name); + goto register_err; + } else { + driver_algs[i].is_registered = 1; + } + } + return 0; + +register_err: + chcr_unregister_alg(); + return err; +} + +/* + * start_crypto - Register the crypto algorithms. + * This should called once when the first device comesup. After this + * kernel will start calling driver APIs for crypto operations. + */ +int start_crypto(void) +{ + return chcr_register_alg(); +} + +/* + * stop_crypto - Deregister all the crypto algorithms with kernel. + * This should be called once when the last device goes down. After this + * kernel will not call the driver API for crypto operations. + */ +int stop_crypto(void) +{ + chcr_unregister_alg(); + return 0; +} diff --git a/drivers/crypto/chelsio/chcr_algo.h b/drivers/crypto/chelsio/chcr_algo.h new file mode 100644 index 000000000..507aafe93 --- /dev/null +++ b/drivers/crypto/chelsio/chcr_algo.h @@ -0,0 +1,405 @@ +/* + * This file is part of the Chelsio T6 Crypto driver for Linux. + * + * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef __CHCR_ALGO_H__ +#define __CHCR_ALGO_H__ + +/* Crypto key context */ +#define KEY_CONTEXT_CTX_LEN_S 24 +#define KEY_CONTEXT_CTX_LEN_M 0xff +#define KEY_CONTEXT_CTX_LEN_V(x) ((x) << KEY_CONTEXT_CTX_LEN_S) +#define KEY_CONTEXT_CTX_LEN_G(x) \ + (((x) >> KEY_CONTEXT_CTX_LEN_S) & KEY_CONTEXT_CTX_LEN_M) + +#define KEY_CONTEXT_DUAL_CK_S 12 +#define KEY_CONTEXT_DUAL_CK_M 0x1 +#define KEY_CONTEXT_DUAL_CK_V(x) ((x) << KEY_CONTEXT_DUAL_CK_S) +#define KEY_CONTEXT_DUAL_CK_G(x) \ +(((x) >> KEY_CONTEXT_DUAL_CK_S) & KEY_CONTEXT_DUAL_CK_M) +#define KEY_CONTEXT_DUAL_CK_F KEY_CONTEXT_DUAL_CK_V(1U) + +#define KEY_CONTEXT_SALT_PRESENT_S 10 +#define KEY_CONTEXT_SALT_PRESENT_M 0x1 +#define KEY_CONTEXT_SALT_PRESENT_V(x) ((x) << KEY_CONTEXT_SALT_PRESENT_S) +#define KEY_CONTEXT_SALT_PRESENT_G(x) \ + (((x) >> KEY_CONTEXT_SALT_PRESENT_S) & \ + KEY_CONTEXT_SALT_PRESENT_M) +#define KEY_CONTEXT_SALT_PRESENT_F KEY_CONTEXT_SALT_PRESENT_V(1U) + +#define KEY_CONTEXT_VALID_S 0 +#define KEY_CONTEXT_VALID_M 0x1 +#define KEY_CONTEXT_VALID_V(x) ((x) << KEY_CONTEXT_VALID_S) +#define KEY_CONTEXT_VALID_G(x) \ + (((x) >> KEY_CONTEXT_VALID_S) & \ + KEY_CONTEXT_VALID_M) +#define KEY_CONTEXT_VALID_F KEY_CONTEXT_VALID_V(1U) + +#define KEY_CONTEXT_CK_SIZE_S 6 +#define KEY_CONTEXT_CK_SIZE_M 0xf +#define KEY_CONTEXT_CK_SIZE_V(x) ((x) << KEY_CONTEXT_CK_SIZE_S) +#define KEY_CONTEXT_CK_SIZE_G(x) \ + (((x) >> KEY_CONTEXT_CK_SIZE_S) & KEY_CONTEXT_CK_SIZE_M) + +#define KEY_CONTEXT_MK_SIZE_S 2 +#define KEY_CONTEXT_MK_SIZE_M 0xf +#define KEY_CONTEXT_MK_SIZE_V(x) ((x) << KEY_CONTEXT_MK_SIZE_S) +#define KEY_CONTEXT_MK_SIZE_G(x) \ + (((x) >> KEY_CONTEXT_MK_SIZE_S) & KEY_CONTEXT_MK_SIZE_M) + +#define KEY_CONTEXT_OPAD_PRESENT_S 11 +#define KEY_CONTEXT_OPAD_PRESENT_M 0x1 +#define KEY_CONTEXT_OPAD_PRESENT_V(x) ((x) << KEY_CONTEXT_OPAD_PRESENT_S) +#define KEY_CONTEXT_OPAD_PRESENT_G(x) \ + (((x) >> KEY_CONTEXT_OPAD_PRESENT_S) & \ + KEY_CONTEXT_OPAD_PRESENT_M) +#define KEY_CONTEXT_OPAD_PRESENT_F KEY_CONTEXT_OPAD_PRESENT_V(1U) + +#define CHCR_HASH_MAX_DIGEST_SIZE 64 +#define CHCR_MAX_SHA_DIGEST_SIZE 64 + +#define IPSEC_TRUNCATED_ICV_SIZE 12 +#define TLS_TRUNCATED_HMAC_SIZE 10 +#define CBCMAC_DIGEST_SIZE 16 +#define MAX_HASH_NAME 20 + +#define SHA1_INIT_STATE_5X4B 5 +#define SHA256_INIT_STATE_8X4B 8 +#define SHA512_INIT_STATE_8X8B 8 +#define SHA1_INIT_STATE SHA1_INIT_STATE_5X4B +#define SHA224_INIT_STATE SHA256_INIT_STATE_8X4B +#define SHA256_INIT_STATE SHA256_INIT_STATE_8X4B +#define SHA384_INIT_STATE SHA512_INIT_STATE_8X8B +#define SHA512_INIT_STATE SHA512_INIT_STATE_8X8B + +#define DUMMY_BYTES 16 + +#define IPAD_DATA 0x36363636 +#define OPAD_DATA 0x5c5c5c5c + +#define TRANSHDR_SIZE(kctx_len)\ + (sizeof(struct chcr_wr) +\ + kctx_len) +#define CIPHER_TRANSHDR_SIZE(kctx_len, sge_pairs) \ + (TRANSHDR_SIZE((kctx_len)) + (sge_pairs) +\ + sizeof(struct cpl_rx_phys_dsgl) + AES_BLOCK_SIZE) +#define HASH_TRANSHDR_SIZE(kctx_len)\ + (TRANSHDR_SIZE(kctx_len) + DUMMY_BYTES) + + +#define FILL_SEC_CPL_OP_IVINSR(id, len, ofst) \ + htonl( \ + CPL_TX_SEC_PDU_OPCODE_V(CPL_TX_SEC_PDU) | \ + CPL_TX_SEC_PDU_RXCHID_V((id)) | \ + CPL_TX_SEC_PDU_ACKFOLLOWS_V(0) | \ + CPL_TX_SEC_PDU_ULPTXLPBK_V(1) | \ + CPL_TX_SEC_PDU_CPLLEN_V((len)) | \ + CPL_TX_SEC_PDU_PLACEHOLDER_V(0) | \ + CPL_TX_SEC_PDU_IVINSRTOFST_V((ofst))) + +#define FILL_SEC_CPL_CIPHERSTOP_HI(a_start, a_stop, c_start, c_stop_hi) \ + htonl( \ + CPL_TX_SEC_PDU_AADSTART_V((a_start)) | \ + CPL_TX_SEC_PDU_AADSTOP_V((a_stop)) | \ + CPL_TX_SEC_PDU_CIPHERSTART_V((c_start)) | \ + CPL_TX_SEC_PDU_CIPHERSTOP_HI_V((c_stop_hi))) + +#define FILL_SEC_CPL_AUTHINSERT(c_stop_lo, a_start, a_stop, a_inst) \ + htonl( \ + CPL_TX_SEC_PDU_CIPHERSTOP_LO_V((c_stop_lo)) | \ + CPL_TX_SEC_PDU_AUTHSTART_V((a_start)) | \ + CPL_TX_SEC_PDU_AUTHSTOP_V((a_stop)) | \ + CPL_TX_SEC_PDU_AUTHINSERT_V((a_inst))) + +#define FILL_SEC_CPL_SCMD0_SEQNO(ctrl, seq, cmode, amode, opad, size) \ + htonl( \ + SCMD_SEQ_NO_CTRL_V(0) | \ + SCMD_STATUS_PRESENT_V(0) | \ + SCMD_PROTO_VERSION_V(CHCR_SCMD_PROTO_VERSION_GENERIC) | \ + SCMD_ENC_DEC_CTRL_V((ctrl)) | \ + SCMD_CIPH_AUTH_SEQ_CTRL_V((seq)) | \ + SCMD_CIPH_MODE_V((cmode)) | \ + SCMD_AUTH_MODE_V((amode)) | \ + SCMD_HMAC_CTRL_V((opad)) | \ + SCMD_IV_SIZE_V((size)) | \ + SCMD_NUM_IVS_V(0)) + +#define FILL_SEC_CPL_IVGEN_HDRLEN(last, more, ctx_in, mac, ivdrop, len) htonl( \ + SCMD_ENB_DBGID_V(0) | \ + SCMD_IV_GEN_CTRL_V(0) | \ + SCMD_LAST_FRAG_V((last)) | \ + SCMD_MORE_FRAGS_V((more)) | \ + SCMD_TLS_COMPPDU_V(0) | \ + SCMD_KEY_CTX_INLINE_V((ctx_in)) | \ + SCMD_TLS_FRAG_ENABLE_V(0) | \ + SCMD_MAC_ONLY_V((mac)) | \ + SCMD_AADIVDROP_V((ivdrop)) | \ + SCMD_HDR_LEN_V((len))) + +#define FILL_KEY_CTX_HDR(ck_size, mk_size, d_ck, opad, ctx_len) \ + htonl(KEY_CONTEXT_VALID_V(1) | \ + KEY_CONTEXT_CK_SIZE_V((ck_size)) | \ + KEY_CONTEXT_MK_SIZE_V(mk_size) | \ + KEY_CONTEXT_DUAL_CK_V((d_ck)) | \ + KEY_CONTEXT_OPAD_PRESENT_V((opad)) | \ + KEY_CONTEXT_SALT_PRESENT_V(1) | \ + KEY_CONTEXT_CTX_LEN_V((ctx_len))) + +#define FILL_KEY_CRX_HDR(ck_size, mk_size, d_ck, opad, ctx_len) \ + htonl(TLS_KEYCTX_RXMK_SIZE_V(mk_size) | \ + TLS_KEYCTX_RXCK_SIZE_V(ck_size) | \ + TLS_KEYCTX_RX_VALID_V(1) | \ + TLS_KEYCTX_RX_SEQCTR_V(3) | \ + TLS_KEYCTX_RXAUTH_MODE_V(4) | \ + TLS_KEYCTX_RXCIPH_MODE_V(2) | \ + TLS_KEYCTX_RXFLIT_CNT_V((ctx_len))) + +#define FILL_WR_OP_CCTX_SIZE \ + htonl( \ + FW_CRYPTO_LOOKASIDE_WR_OPCODE_V( \ + FW_CRYPTO_LOOKASIDE_WR) | \ + FW_CRYPTO_LOOKASIDE_WR_COMPL_V(0) | \ + FW_CRYPTO_LOOKASIDE_WR_IMM_LEN_V((0)) | \ + FW_CRYPTO_LOOKASIDE_WR_CCTX_LOC_V(0) | \ + FW_CRYPTO_LOOKASIDE_WR_CCTX_SIZE_V(0)) + +#define FILL_WR_RX_Q_ID(cid, qid, lcb, fid) \ + htonl( \ + FW_CRYPTO_LOOKASIDE_WR_RX_CHID_V((cid)) | \ + FW_CRYPTO_LOOKASIDE_WR_RX_Q_ID_V((qid)) | \ + FW_CRYPTO_LOOKASIDE_WR_LCB_V((lcb)) | \ + FW_CRYPTO_LOOKASIDE_WR_IV_V((IV_NOP)) | \ + FW_CRYPTO_LOOKASIDE_WR_FQIDX_V(fid)) + +#define FILL_ULPTX_CMD_DEST(cid, qid) \ + htonl(ULPTX_CMD_V(ULP_TX_PKT) | \ + ULP_TXPKT_DEST_V(0) | \ + ULP_TXPKT_DATAMODIFY_V(0) | \ + ULP_TXPKT_CHANNELID_V((cid)) | \ + ULP_TXPKT_RO_V(1) | \ + ULP_TXPKT_FID_V(qid)) + +#define KEYCTX_ALIGN_PAD(bs) ({unsigned int _bs = (bs);\ + _bs == SHA1_DIGEST_SIZE ? 12 : 0; }) + +#define FILL_PLD_SIZE_HASH_SIZE(payload_sgl_len, sgl_lengths, total_frags) \ + htonl(FW_CRYPTO_LOOKASIDE_WR_PLD_SIZE_V(payload_sgl_len ? \ + sgl_lengths[total_frags] : 0) |\ + FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(0)) + +#define FILL_LEN_PKD(calc_tx_flits_ofld, skb) \ + htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP((\ + calc_tx_flits_ofld(skb) * 8), 16))) + +#define FILL_CMD_MORE(immdatalen) htonl(ULPTX_CMD_V(ULP_TX_SC_IMM) |\ + ULP_TX_SC_MORE_V((immdatalen))) +#define MAX_NK 8 +#define MAX_DSGL_ENT 32 +#define MIN_AUTH_SG 1 /* IV */ +#define MIN_GCM_SG 1 /* IV */ +#define MIN_DIGEST_SG 1 /*Partial Buffer*/ +#define MIN_CCM_SG 1 /*IV+B0*/ +#define CIP_SPACE_LEFT(len) \ + ((SGE_MAX_WR_LEN - CIP_WR_MIN_LEN - (len))) +#define HASH_SPACE_LEFT(len) \ + ((SGE_MAX_WR_LEN - HASH_WR_MIN_LEN - (len))) + +struct algo_param { + unsigned int auth_mode; + unsigned int mk_size; + unsigned int result_size; +}; + +struct hash_wr_param { + struct algo_param alg_prm; + unsigned int opad_needed; + unsigned int more; + unsigned int last; + unsigned int kctx_len; + unsigned int sg_len; + unsigned int bfr_len; + unsigned int hash_size; + u64 scmd1; +}; + +struct cipher_wr_param { + struct skcipher_request *req; + char *iv; + int bytes; + unsigned short qid; +}; +enum { + AES_KEYLENGTH_128BIT = 128, + AES_KEYLENGTH_192BIT = 192, + AES_KEYLENGTH_256BIT = 256 +}; + +enum { + KEYLENGTH_3BYTES = 3, + KEYLENGTH_4BYTES = 4, + KEYLENGTH_6BYTES = 6, + KEYLENGTH_8BYTES = 8 +}; + +enum { + NUMBER_OF_ROUNDS_10 = 10, + NUMBER_OF_ROUNDS_12 = 12, + NUMBER_OF_ROUNDS_14 = 14, +}; + +/* + * CCM defines values of 4, 6, 8, 10, 12, 14, and 16 octets, + * where they indicate the size of the integrity check value (ICV) + */ +enum { + ICV_4 = 4, + ICV_6 = 6, + ICV_8 = 8, + ICV_10 = 10, + ICV_12 = 12, + ICV_13 = 13, + ICV_14 = 14, + ICV_15 = 15, + ICV_16 = 16 +}; + +struct phys_sge_pairs { + __be16 len[8]; + __be64 addr[8]; +}; + + +static const u32 chcr_sha1_init[SHA1_DIGEST_SIZE / 4] = { + SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4, +}; + +static const u32 chcr_sha224_init[SHA256_DIGEST_SIZE / 4] = { + SHA224_H0, SHA224_H1, SHA224_H2, SHA224_H3, + SHA224_H4, SHA224_H5, SHA224_H6, SHA224_H7, +}; + +static const u32 chcr_sha256_init[SHA256_DIGEST_SIZE / 4] = { + SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3, + SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7, +}; + +static const u64 chcr_sha384_init[SHA512_DIGEST_SIZE / 8] = { + SHA384_H0, SHA384_H1, SHA384_H2, SHA384_H3, + SHA384_H4, SHA384_H5, SHA384_H6, SHA384_H7, +}; + +static const u64 chcr_sha512_init[SHA512_DIGEST_SIZE / 8] = { + SHA512_H0, SHA512_H1, SHA512_H2, SHA512_H3, + SHA512_H4, SHA512_H5, SHA512_H6, SHA512_H7, +}; + +static inline void copy_hash_init_values(char *key, int digestsize) +{ + u8 i; + __be32 *dkey = (__be32 *)key; + u64 *ldkey = (u64 *)key; + __be64 *sha384 = (__be64 *)chcr_sha384_init; + __be64 *sha512 = (__be64 *)chcr_sha512_init; + + switch (digestsize) { + case SHA1_DIGEST_SIZE: + for (i = 0; i < SHA1_INIT_STATE; i++) + dkey[i] = cpu_to_be32(chcr_sha1_init[i]); + break; + case SHA224_DIGEST_SIZE: + for (i = 0; i < SHA224_INIT_STATE; i++) + dkey[i] = cpu_to_be32(chcr_sha224_init[i]); + break; + case SHA256_DIGEST_SIZE: + for (i = 0; i < SHA256_INIT_STATE; i++) + dkey[i] = cpu_to_be32(chcr_sha256_init[i]); + break; + case SHA384_DIGEST_SIZE: + for (i = 0; i < SHA384_INIT_STATE; i++) + ldkey[i] = be64_to_cpu(sha384[i]); + break; + case SHA512_DIGEST_SIZE: + for (i = 0; i < SHA512_INIT_STATE; i++) + ldkey[i] = be64_to_cpu(sha512[i]); + break; + } +} + +/* Number of len fields(8) * size of one addr field */ +#define PHYSDSGL_MAX_LEN_SIZE 16 + +static inline u16 get_space_for_phys_dsgl(unsigned int sgl_entr) +{ + /* len field size + addr field size */ + return ((sgl_entr >> 3) + ((sgl_entr % 8) ? + 1 : 0)) * PHYSDSGL_MAX_LEN_SIZE + + (sgl_entr << 3) + ((sgl_entr % 2 ? 1 : 0) << 3); +} + +/* The AES s-transform matrix (s-box). */ +static const u8 aes_sbox[256] = { + 99, 124, 119, 123, 242, 107, 111, 197, 48, 1, 103, 43, 254, 215, + 171, 118, 202, 130, 201, 125, 250, 89, 71, 240, 173, 212, 162, 175, + 156, 164, 114, 192, 183, 253, 147, 38, 54, 63, 247, 204, 52, 165, + 229, 241, 113, 216, 49, 21, 4, 199, 35, 195, 24, 150, 5, 154, 7, + 18, 128, 226, 235, 39, 178, 117, 9, 131, 44, 26, 27, 110, 90, + 160, 82, 59, 214, 179, 41, 227, 47, 132, 83, 209, 0, 237, 32, + 252, 177, 91, 106, 203, 190, 57, 74, 76, 88, 207, 208, 239, 170, + 251, 67, 77, 51, 133, 69, 249, 2, 127, 80, 60, 159, 168, 81, + 163, 64, 143, 146, 157, 56, 245, 188, 182, 218, 33, 16, 255, 243, + 210, 205, 12, 19, 236, 95, 151, 68, 23, 196, 167, 126, 61, 100, + 93, 25, 115, 96, 129, 79, 220, 34, 42, 144, 136, 70, 238, 184, + 20, 222, 94, 11, 219, 224, 50, 58, 10, 73, 6, 36, 92, 194, + 211, 172, 98, 145, 149, 228, 121, 231, 200, 55, 109, 141, 213, 78, + 169, 108, 86, 244, 234, 101, 122, 174, 8, 186, 120, 37, 46, 28, 166, + 180, 198, 232, 221, 116, 31, 75, 189, 139, 138, 112, 62, 181, 102, + 72, 3, 246, 14, 97, 53, 87, 185, 134, 193, 29, 158, 225, 248, + 152, 17, 105, 217, 142, 148, 155, 30, 135, 233, 206, 85, 40, 223, + 140, 161, 137, 13, 191, 230, 66, 104, 65, 153, 45, 15, 176, 84, + 187, 22 +}; + +static inline u32 aes_ks_subword(const u32 w) +{ + u8 bytes[4]; + + *(u32 *)(&bytes[0]) = w; + bytes[0] = aes_sbox[bytes[0]]; + bytes[1] = aes_sbox[bytes[1]]; + bytes[2] = aes_sbox[bytes[2]]; + bytes[3] = aes_sbox[bytes[3]]; + return *(u32 *)(&bytes[0]); +} + +#endif /* __CHCR_ALGO_H__ */ diff --git a/drivers/crypto/chelsio/chcr_core.c b/drivers/crypto/chelsio/chcr_core.c new file mode 100644 index 000000000..39c70e625 --- /dev/null +++ b/drivers/crypto/chelsio/chcr_core.c @@ -0,0 +1,311 @@ +/* + * This file is part of the Chelsio T4/T5/T6 Ethernet driver for Linux. + * + * Copyright (C) 2011-2016 Chelsio Communications. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation. + * + * Written and Maintained by: + * Manoj Malviya (manojmalviya@chelsio.com) + * Atul Gupta (atul.gupta@chelsio.com) + * Jitendra Lulla (jlulla@chelsio.com) + * Yeshaswi M R Gowda (yeshaswi@chelsio.com) + * Harsh Jain (harsh@chelsio.com) + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/skbuff.h> + +#include <crypto/aes.h> +#include <crypto/hash.h> + +#include "t4_msg.h" +#include "chcr_core.h" +#include "cxgb4_uld.h" + +static struct chcr_driver_data drv_data; + +typedef int (*chcr_handler_func)(struct adapter *adap, unsigned char *input); +static int cpl_fw6_pld_handler(struct adapter *adap, unsigned char *input); +static void *chcr_uld_add(const struct cxgb4_lld_info *lld); +static int chcr_uld_state_change(void *handle, enum cxgb4_state state); + +static chcr_handler_func work_handlers[NUM_CPL_CMDS] = { + [CPL_FW6_PLD] = cpl_fw6_pld_handler, +}; + +static struct cxgb4_uld_info chcr_uld_info = { + .name = DRV_MODULE_NAME, + .nrxq = MAX_ULD_QSETS, + /* Max ntxq will be derived from fw config file*/ + .rxq_size = 1024, + .add = chcr_uld_add, + .state_change = chcr_uld_state_change, + .rx_handler = chcr_uld_rx_handler, +}; + +static void detach_work_fn(struct work_struct *work) +{ + struct chcr_dev *dev; + + dev = container_of(work, struct chcr_dev, detach_work.work); + + if (atomic_read(&dev->inflight)) { + dev->wqretry--; + if (dev->wqretry) { + pr_debug("Request Inflight Count %d\n", + atomic_read(&dev->inflight)); + + schedule_delayed_work(&dev->detach_work, WQ_DETACH_TM); + } else { + WARN(1, "CHCR:%d request Still Pending\n", + atomic_read(&dev->inflight)); + complete(&dev->detach_comp); + } + } else { + complete(&dev->detach_comp); + } +} + +struct uld_ctx *assign_chcr_device(void) +{ + struct uld_ctx *u_ctx = NULL; + + /* + * When multiple devices are present in system select + * device in round-robin fashion for crypto operations + * Although One session must use the same device to + * maintain request-response ordering. + */ + mutex_lock(&drv_data.drv_mutex); + if (!list_empty(&drv_data.act_dev)) { + u_ctx = drv_data.last_dev; + if (list_is_last(&drv_data.last_dev->entry, &drv_data.act_dev)) + drv_data.last_dev = list_first_entry(&drv_data.act_dev, + struct uld_ctx, entry); + else + drv_data.last_dev = + list_next_entry(drv_data.last_dev, entry); + } + mutex_unlock(&drv_data.drv_mutex); + return u_ctx; +} + +static void chcr_dev_add(struct uld_ctx *u_ctx) +{ + struct chcr_dev *dev; + + dev = &u_ctx->dev; + dev->state = CHCR_ATTACH; + atomic_set(&dev->inflight, 0); + mutex_lock(&drv_data.drv_mutex); + list_move(&u_ctx->entry, &drv_data.act_dev); + if (!drv_data.last_dev) + drv_data.last_dev = u_ctx; + mutex_unlock(&drv_data.drv_mutex); +} + +static void chcr_dev_init(struct uld_ctx *u_ctx) +{ + struct chcr_dev *dev; + + dev = &u_ctx->dev; + spin_lock_init(&dev->lock_chcr_dev); + INIT_DELAYED_WORK(&dev->detach_work, detach_work_fn); + init_completion(&dev->detach_comp); + dev->state = CHCR_INIT; + dev->wqretry = WQ_RETRY; + atomic_inc(&drv_data.dev_count); + atomic_set(&dev->inflight, 0); + mutex_lock(&drv_data.drv_mutex); + list_add_tail(&u_ctx->entry, &drv_data.inact_dev); + mutex_unlock(&drv_data.drv_mutex); +} + +static int chcr_dev_move(struct uld_ctx *u_ctx) +{ + mutex_lock(&drv_data.drv_mutex); + if (drv_data.last_dev == u_ctx) { + if (list_is_last(&drv_data.last_dev->entry, &drv_data.act_dev)) + drv_data.last_dev = list_first_entry(&drv_data.act_dev, + struct uld_ctx, entry); + else + drv_data.last_dev = + list_next_entry(drv_data.last_dev, entry); + } + list_move(&u_ctx->entry, &drv_data.inact_dev); + if (list_empty(&drv_data.act_dev)) + drv_data.last_dev = NULL; + atomic_dec(&drv_data.dev_count); + mutex_unlock(&drv_data.drv_mutex); + + return 0; +} + +static int cpl_fw6_pld_handler(struct adapter *adap, + unsigned char *input) +{ + struct crypto_async_request *req; + struct cpl_fw6_pld *fw6_pld; + u32 ack_err_status = 0; + int error_status = 0; + + fw6_pld = (struct cpl_fw6_pld *)input; + req = (struct crypto_async_request *)(uintptr_t)be64_to_cpu( + fw6_pld->data[1]); + + ack_err_status = + ntohl(*(__be32 *)((unsigned char *)&fw6_pld->data[0] + 4)); + if (CHK_MAC_ERR_BIT(ack_err_status) || CHK_PAD_ERR_BIT(ack_err_status)) + error_status = -EBADMSG; + /* call completion callback with failure status */ + if (req) { + error_status = chcr_handle_resp(req, input, error_status); + } else { + pr_err("Incorrect request address from the firmware\n"); + return -EFAULT; + } + if (error_status) + atomic_inc(&adap->chcr_stats.error); + + return 0; +} + +int chcr_send_wr(struct sk_buff *skb) +{ + return cxgb4_crypto_send(skb->dev, skb); +} + +static void *chcr_uld_add(const struct cxgb4_lld_info *lld) +{ + struct uld_ctx *u_ctx; + + /* Create the device and add it in the device list */ + pr_info_once("%s\n", DRV_DESC); + if (!(lld->ulp_crypto & ULP_CRYPTO_LOOKASIDE)) + return ERR_PTR(-EOPNOTSUPP); + + /* Create the device and add it in the device list */ + u_ctx = kzalloc(sizeof(*u_ctx), GFP_KERNEL); + if (!u_ctx) { + u_ctx = ERR_PTR(-ENOMEM); + goto out; + } + u_ctx->lldi = *lld; + chcr_dev_init(u_ctx); +out: + return u_ctx; +} + +int chcr_uld_rx_handler(void *handle, const __be64 *rsp, + const struct pkt_gl *pgl) +{ + struct uld_ctx *u_ctx = (struct uld_ctx *)handle; + struct chcr_dev *dev = &u_ctx->dev; + struct adapter *adap = padap(dev); + const struct cpl_fw6_pld *rpl = (struct cpl_fw6_pld *)rsp; + + if (!work_handlers[rpl->opcode]) { + pr_err("Unsupported opcode %d received\n", rpl->opcode); + return 0; + } + + if (!pgl) + work_handlers[rpl->opcode](adap, (unsigned char *)&rsp[1]); + else + work_handlers[rpl->opcode](adap, pgl->va); + return 0; +} + +static void chcr_detach_device(struct uld_ctx *u_ctx) +{ + struct chcr_dev *dev = &u_ctx->dev; + + if (dev->state == CHCR_DETACH) { + pr_debug("Detached Event received for already detach device\n"); + return; + } + dev->state = CHCR_DETACH; + if (atomic_read(&dev->inflight) != 0) { + schedule_delayed_work(&dev->detach_work, WQ_DETACH_TM); + wait_for_completion(&dev->detach_comp); + } + + // Move u_ctx to inactive_dev list + chcr_dev_move(u_ctx); +} + +static int chcr_uld_state_change(void *handle, enum cxgb4_state state) +{ + struct uld_ctx *u_ctx = handle; + int ret = 0; + + switch (state) { + case CXGB4_STATE_UP: + if (u_ctx->dev.state != CHCR_INIT) { + // ALready Initialised. + return 0; + } + chcr_dev_add(u_ctx); + ret = start_crypto(); + break; + + case CXGB4_STATE_DETACH: + chcr_detach_device(u_ctx); + if (!atomic_read(&drv_data.dev_count)) + stop_crypto(); + break; + + case CXGB4_STATE_START_RECOVERY: + case CXGB4_STATE_DOWN: + default: + break; + } + return ret; +} + +static int __init chcr_crypto_init(void) +{ + INIT_LIST_HEAD(&drv_data.act_dev); + INIT_LIST_HEAD(&drv_data.inact_dev); + atomic_set(&drv_data.dev_count, 0); + mutex_init(&drv_data.drv_mutex); + drv_data.last_dev = NULL; + cxgb4_register_uld(CXGB4_ULD_CRYPTO, &chcr_uld_info); + + return 0; +} + +static void __exit chcr_crypto_exit(void) +{ + struct uld_ctx *u_ctx, *tmp; + struct adapter *adap; + + stop_crypto(); + cxgb4_unregister_uld(CXGB4_ULD_CRYPTO); + /* Remove all devices from list */ + mutex_lock(&drv_data.drv_mutex); + list_for_each_entry_safe(u_ctx, tmp, &drv_data.act_dev, entry) { + adap = padap(&u_ctx->dev); + memset(&adap->chcr_stats, 0, sizeof(adap->chcr_stats)); + list_del(&u_ctx->entry); + kfree(u_ctx); + } + list_for_each_entry_safe(u_ctx, tmp, &drv_data.inact_dev, entry) { + adap = padap(&u_ctx->dev); + memset(&adap->chcr_stats, 0, sizeof(adap->chcr_stats)); + list_del(&u_ctx->entry); + kfree(u_ctx); + } + mutex_unlock(&drv_data.drv_mutex); +} + +module_init(chcr_crypto_init); +module_exit(chcr_crypto_exit); + +MODULE_DESCRIPTION("Crypto Co-processor for Chelsio Terminator cards."); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Chelsio Communications"); diff --git a/drivers/crypto/chelsio/chcr_core.h b/drivers/crypto/chelsio/chcr_core.h new file mode 100644 index 000000000..f7c8bb95a --- /dev/null +++ b/drivers/crypto/chelsio/chcr_core.h @@ -0,0 +1,139 @@ +/* + * This file is part of the Chelsio T6 Crypto driver for Linux. + * + * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef __CHCR_CORE_H__ +#define __CHCR_CORE_H__ + +#include <crypto/algapi.h> +#include <net/tls.h> +#include "t4_hw.h" +#include "cxgb4.h" +#include "t4_msg.h" +#include "cxgb4_uld.h" + +#define DRV_MODULE_NAME "chcr" +#define DRV_DESC "Chelsio T6 Crypto Co-processor Driver" + +#define MAX_PENDING_REQ_TO_HW 20 +#define CHCR_TEST_RESPONSE_TIMEOUT 1000 +#define WQ_DETACH_TM (msecs_to_jiffies(50)) +#define PAD_ERROR_BIT 1 +#define CHK_PAD_ERR_BIT(x) (((x) >> PAD_ERROR_BIT) & 1) + +#define MAC_ERROR_BIT 0 +#define CHK_MAC_ERR_BIT(x) (((x) >> MAC_ERROR_BIT) & 1) +#define MAX_SALT 4 +#define CIP_WR_MIN_LEN (sizeof(struct chcr_wr) + \ + sizeof(struct cpl_rx_phys_dsgl) + \ + sizeof(struct ulptx_sgl) + 16) //IV + +#define HASH_WR_MIN_LEN (sizeof(struct chcr_wr) + \ + DUMMY_BYTES + \ + sizeof(struct ulptx_sgl)) +struct uld_ctx; + +struct _key_ctx { + __be32 ctx_hdr; + u8 salt[MAX_SALT]; + __be64 iv_to_auth; + unsigned char key[]; +}; + +#define WQ_RETRY 5 +struct chcr_driver_data { + struct list_head act_dev; + struct list_head inact_dev; + atomic_t dev_count; + struct mutex drv_mutex; + struct uld_ctx *last_dev; +}; + +enum chcr_state { + CHCR_INIT = 0, + CHCR_ATTACH, + CHCR_DETACH, +}; +struct chcr_wr { + struct fw_crypto_lookaside_wr wreq; + struct ulp_txpkt ulptx; + struct ulptx_idata sc_imm; + struct cpl_tx_sec_pdu sec_cpl; + struct _key_ctx key_ctx; +}; + +struct chcr_dev { + spinlock_t lock_chcr_dev; + enum chcr_state state; + atomic_t inflight; + int wqretry; + struct delayed_work detach_work; + struct completion detach_comp; +}; + +struct uld_ctx { + struct list_head entry; + struct cxgb4_lld_info lldi; + struct chcr_dev dev; +}; + +/* + * sgl_len - calculates the size of an SGL of the given capacity + * @n: the number of SGL entries + * Calculates the number of flits needed for a scatter/gather list that + * can hold the given number of entries. + */ +static inline unsigned int sgl_len(unsigned int n) +{ + n--; + return (3 * n) / 2 + (n & 1) + 2; +} + +static inline void *padap(struct chcr_dev *dev) +{ + struct uld_ctx *u_ctx = container_of(dev, struct uld_ctx, dev); + + return pci_get_drvdata(u_ctx->lldi.pdev); +} + +struct uld_ctx *assign_chcr_device(void); +int chcr_send_wr(struct sk_buff *skb); +int start_crypto(void); +int stop_crypto(void); +int chcr_uld_rx_handler(void *handle, const __be64 *rsp, + const struct pkt_gl *pgl); +int chcr_uld_tx_handler(struct sk_buff *skb, struct net_device *dev); +int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input, + int err); +#endif /* __CHCR_CORE_H__ */ diff --git a/drivers/crypto/chelsio/chcr_crypto.h b/drivers/crypto/chelsio/chcr_crypto.h new file mode 100644 index 000000000..c7816c83e --- /dev/null +++ b/drivers/crypto/chelsio/chcr_crypto.h @@ -0,0 +1,353 @@ +/* + * This file is part of the Chelsio T6 Crypto driver for Linux. + * + * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef __CHCR_CRYPTO_H__ +#define __CHCR_CRYPTO_H__ + +#define GHASH_BLOCK_SIZE 16 +#define GHASH_DIGEST_SIZE 16 + +#define CCM_B0_SIZE 16 +#define CCM_AAD_FIELD_SIZE 2 +// 511 - 16(For IV) +#define T6_MAX_AAD_SIZE 495 + + +/* Define following if h/w is not dropping the AAD and IV data before + * giving the processed data + */ + +#define CHCR_CRA_PRIORITY 500 +#define CHCR_AEAD_PRIORITY 6000 +#define CHCR_AES_MAX_KEY_LEN (2 * (AES_MAX_KEY_SIZE)) /* consider xts */ +#define CHCR_MAX_CRYPTO_IV_LEN 16 /* AES IV len */ + +#define CHCR_MAX_AUTHENC_AES_KEY_LEN 32 /* max aes key length*/ +#define CHCR_MAX_AUTHENC_SHA_KEY_LEN 128 /* max sha key length*/ + +#define CHCR_GIVENCRYPT_OP 2 +/* CPL/SCMD parameters */ + +#define CHCR_ENCRYPT_OP 0 +#define CHCR_DECRYPT_OP 1 + +#define CHCR_SCMD_SEQ_NO_CTRL_32BIT 1 +#define CHCR_SCMD_SEQ_NO_CTRL_48BIT 2 +#define CHCR_SCMD_SEQ_NO_CTRL_64BIT 3 + +#define CHCR_SCMD_PROTO_VERSION_GENERIC 4 + +#define CHCR_SCMD_AUTH_CTRL_AUTH_CIPHER 0 +#define CHCR_SCMD_AUTH_CTRL_CIPHER_AUTH 1 + +#define CHCR_SCMD_CIPHER_MODE_NOP 0 +#define CHCR_SCMD_CIPHER_MODE_AES_CBC 1 +#define CHCR_SCMD_CIPHER_MODE_AES_GCM 2 +#define CHCR_SCMD_CIPHER_MODE_AES_CTR 3 +#define CHCR_SCMD_CIPHER_MODE_GENERIC_AES 4 +#define CHCR_SCMD_CIPHER_MODE_AES_XTS 6 +#define CHCR_SCMD_CIPHER_MODE_AES_CCM 7 + +#define CHCR_SCMD_AUTH_MODE_NOP 0 +#define CHCR_SCMD_AUTH_MODE_SHA1 1 +#define CHCR_SCMD_AUTH_MODE_SHA224 2 +#define CHCR_SCMD_AUTH_MODE_SHA256 3 +#define CHCR_SCMD_AUTH_MODE_GHASH 4 +#define CHCR_SCMD_AUTH_MODE_SHA512_224 5 +#define CHCR_SCMD_AUTH_MODE_SHA512_256 6 +#define CHCR_SCMD_AUTH_MODE_SHA512_384 7 +#define CHCR_SCMD_AUTH_MODE_SHA512_512 8 +#define CHCR_SCMD_AUTH_MODE_CBCMAC 9 +#define CHCR_SCMD_AUTH_MODE_CMAC 10 + +#define CHCR_SCMD_HMAC_CTRL_NOP 0 +#define CHCR_SCMD_HMAC_CTRL_NO_TRUNC 1 +#define CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366 2 +#define CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT 3 +#define CHCR_SCMD_HMAC_CTRL_PL1 4 +#define CHCR_SCMD_HMAC_CTRL_PL2 5 +#define CHCR_SCMD_HMAC_CTRL_PL3 6 +#define CHCR_SCMD_HMAC_CTRL_DIV2 7 +#define VERIFY_HW 0 +#define VERIFY_SW 1 + +#define CHCR_SCMD_IVGEN_CTRL_HW 0 +#define CHCR_SCMD_IVGEN_CTRL_SW 1 +/* This are not really mac key size. They are intermediate values + * of sha engine and its size + */ +#define CHCR_KEYCTX_MAC_KEY_SIZE_128 0 +#define CHCR_KEYCTX_MAC_KEY_SIZE_160 1 +#define CHCR_KEYCTX_MAC_KEY_SIZE_192 2 +#define CHCR_KEYCTX_MAC_KEY_SIZE_256 3 +#define CHCR_KEYCTX_MAC_KEY_SIZE_512 4 +#define CHCR_KEYCTX_CIPHER_KEY_SIZE_128 0 +#define CHCR_KEYCTX_CIPHER_KEY_SIZE_192 1 +#define CHCR_KEYCTX_CIPHER_KEY_SIZE_256 2 +#define CHCR_KEYCTX_NO_KEY 15 + +#define CHCR_CPL_FW4_PLD_IV_OFFSET (5 * 64) /* bytes. flt #5 and #6 */ +#define CHCR_CPL_FW4_PLD_HASH_RESULT_OFFSET (7 * 64) /* bytes. flt #7 */ +#define CHCR_CPL_FW4_PLD_DATA_SIZE (4 * 64) /* bytes. flt #4 to #7 */ + +#define KEY_CONTEXT_HDR_SALT_AND_PAD 16 +#define flits_to_bytes(x) (x * 8) + +#define IV_NOP 0 +#define IV_IMMEDIATE 1 +#define IV_DSGL 2 + +#define AEAD_H_SIZE 16 + +#define CRYPTO_ALG_SUB_TYPE_MASK 0x0f000000 +#define CRYPTO_ALG_SUB_TYPE_HASH_HMAC 0x01000000 +#define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 0x02000000 +#define CRYPTO_ALG_SUB_TYPE_AEAD_GCM 0x03000000 +#define CRYPTO_ALG_SUB_TYPE_CBC_SHA 0x04000000 +#define CRYPTO_ALG_SUB_TYPE_AEAD_CCM 0x05000000 +#define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309 0x06000000 +#define CRYPTO_ALG_SUB_TYPE_CBC_NULL 0x07000000 +#define CRYPTO_ALG_SUB_TYPE_CTR 0x08000000 +#define CRYPTO_ALG_SUB_TYPE_CTR_RFC3686 0x09000000 +#define CRYPTO_ALG_SUB_TYPE_XTS 0x0a000000 +#define CRYPTO_ALG_SUB_TYPE_CBC 0x0b000000 +#define CRYPTO_ALG_SUB_TYPE_CTR_SHA 0x0c000000 +#define CRYPTO_ALG_SUB_TYPE_CTR_NULL 0x0d000000 +#define CRYPTO_ALG_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\ + CRYPTO_ALG_SUB_TYPE_HASH_HMAC) + +#define MAX_SCRATCH_PAD_SIZE 32 + +#define CHCR_HASH_MAX_BLOCK_SIZE_64 64 +#define CHCR_HASH_MAX_BLOCK_SIZE_128 128 +#define CHCR_SRC_SG_SIZE (0x10000 - sizeof(int)) +#define CHCR_DST_SG_SIZE 2048 + +static inline struct chcr_context *a_ctx(struct crypto_aead *tfm) +{ + return crypto_aead_ctx(tfm); +} + +static inline struct chcr_context *c_ctx(struct crypto_skcipher *tfm) +{ + return crypto_skcipher_ctx(tfm); +} + +static inline struct chcr_context *h_ctx(struct crypto_ahash *tfm) +{ + return crypto_tfm_ctx(crypto_ahash_tfm(tfm)); +} + +struct ablk_ctx { + struct crypto_skcipher *sw_cipher; + __be32 key_ctx_hdr; + unsigned int enckey_len; + unsigned char ciph_mode; + u8 key[CHCR_AES_MAX_KEY_LEN]; + u8 nonce[4]; + u8 rrkey[AES_MAX_KEY_SIZE]; +}; +struct chcr_aead_reqctx { + struct sk_buff *skb; + dma_addr_t iv_dma; + dma_addr_t b0_dma; + unsigned int b0_len; + unsigned int op; + u16 imm; + u16 verify; + u16 txqidx; + u16 rxqidx; + u8 iv[CHCR_MAX_CRYPTO_IV_LEN + MAX_SCRATCH_PAD_SIZE]; + u8 *scratch_pad; +}; + +struct ulptx_walk { + struct ulptx_sgl *sgl; + unsigned int nents; + unsigned int pair_idx; + unsigned int last_sg_len; + struct scatterlist *last_sg; + struct ulptx_sge_pair *pair; + +}; + +struct dsgl_walk { + unsigned int nents; + unsigned int last_sg_len; + struct scatterlist *last_sg; + struct cpl_rx_phys_dsgl *dsgl; + struct phys_sge_pairs *to; +}; + +struct chcr_gcm_ctx { + u8 ghash_h[AEAD_H_SIZE]; +}; + +struct chcr_authenc_ctx { + u8 dec_rrkey[AES_MAX_KEY_SIZE]; + u8 h_iopad[2 * CHCR_HASH_MAX_DIGEST_SIZE]; + unsigned char auth_mode; +}; + +struct __aead_ctx { + union { + DECLARE_FLEX_ARRAY(struct chcr_gcm_ctx, gcm); + DECLARE_FLEX_ARRAY(struct chcr_authenc_ctx, authenc); + }; +}; + +struct chcr_aead_ctx { + __be32 key_ctx_hdr; + unsigned int enckey_len; + struct crypto_aead *sw_cipher; + u8 salt[MAX_SALT]; + u8 key[CHCR_AES_MAX_KEY_LEN]; + u8 nonce[4]; + u16 hmac_ctrl; + u16 mayverify; + struct __aead_ctx ctx[]; +}; + +struct hmac_ctx { + struct crypto_shash *base_hash; + u8 ipad[CHCR_HASH_MAX_BLOCK_SIZE_128]; + u8 opad[CHCR_HASH_MAX_BLOCK_SIZE_128]; +}; + +struct __crypto_ctx { + union { + DECLARE_FLEX_ARRAY(struct hmac_ctx, hmacctx); + DECLARE_FLEX_ARRAY(struct ablk_ctx, ablkctx); + DECLARE_FLEX_ARRAY(struct chcr_aead_ctx, aeadctx); + }; +}; + +struct chcr_context { + struct chcr_dev *dev; + unsigned char rxq_perchan; + unsigned char txq_perchan; + unsigned int ntxq; + unsigned int nrxq; + struct completion cbc_aes_aio_done; + struct __crypto_ctx crypto_ctx[]; +}; + +struct chcr_hctx_per_wr { + struct scatterlist *srcsg; + struct sk_buff *skb; + dma_addr_t dma_addr; + u32 dma_len; + unsigned int src_ofst; + unsigned int processed; + u32 result; + u8 is_sg_map; + u8 imm; + /*Final callback called. Driver cannot rely on nbytes to decide + * final call + */ + u8 isfinal; +}; + +struct chcr_ahash_req_ctx { + struct chcr_hctx_per_wr hctx_wr; + u8 *reqbfr; + u8 *skbfr; + /* SKB which is being sent to the hardware for processing */ + u64 data_len; /* Data len till time */ + u16 txqidx; + u16 rxqidx; + u8 reqlen; + u8 partial_hash[CHCR_HASH_MAX_DIGEST_SIZE]; + u8 bfr1[CHCR_HASH_MAX_BLOCK_SIZE_128]; + u8 bfr2[CHCR_HASH_MAX_BLOCK_SIZE_128]; +}; + +struct chcr_skcipher_req_ctx { + struct sk_buff *skb; + struct scatterlist *dstsg; + unsigned int processed; + unsigned int last_req_len; + unsigned int partial_req; + struct scatterlist *srcsg; + unsigned int src_ofst; + unsigned int dst_ofst; + unsigned int op; + u16 imm; + u8 iv[CHCR_MAX_CRYPTO_IV_LEN]; + u8 init_iv[CHCR_MAX_CRYPTO_IV_LEN]; + u16 txqidx; + u16 rxqidx; + struct skcipher_request fallback_req; // keep at the end +}; + +struct chcr_alg_template { + u32 type; + u32 is_registered; + union { + struct skcipher_alg skcipher; + struct ahash_alg hash; + struct aead_alg aead; + } alg; +}; + +typedef struct sk_buff *(*create_wr_t)(struct aead_request *req, + unsigned short qid, + int size); + +void chcr_verify_tag(struct aead_request *req, u8 *input, int *err); +int chcr_aead_dma_map(struct device *dev, struct aead_request *req, + unsigned short op_type); +void chcr_aead_dma_unmap(struct device *dev, struct aead_request *req, + unsigned short op_type); +void chcr_add_aead_dst_ent(struct aead_request *req, + struct cpl_rx_phys_dsgl *phys_cpl, + unsigned short qid); +void chcr_add_aead_src_ent(struct aead_request *req, struct ulptx_sgl *ulptx); +void chcr_add_cipher_src_ent(struct skcipher_request *req, + void *ulptx, + struct cipher_wr_param *wrparam); +int chcr_cipher_dma_map(struct device *dev, struct skcipher_request *req); +void chcr_cipher_dma_unmap(struct device *dev, struct skcipher_request *req); +void chcr_add_cipher_dst_ent(struct skcipher_request *req, + struct cpl_rx_phys_dsgl *phys_cpl, + struct cipher_wr_param *wrparam, + unsigned short qid); +int sg_nents_len_skip(struct scatterlist *sg, u64 len, u64 skip); +void chcr_add_hash_src_ent(struct ahash_request *req, struct ulptx_sgl *ulptx, + struct hash_wr_param *param); +int chcr_hash_dma_map(struct device *dev, struct ahash_request *req); +void chcr_hash_dma_unmap(struct device *dev, struct ahash_request *req); +void chcr_aead_common_exit(struct aead_request *req); +#endif /* __CHCR_CRYPTO_H__ */ |