Commit 2debd332 authored by Harsh Jain's avatar Harsh Jain Committed by Herbert Xu

crypto: chcr - Add AEAD algos.

Add support for following AEAD algos.
 GCM,CCM,RFC4106,RFC4309,authenc(hmac(shaXXX),cbc(aes)).
Reviewed-by: default avatarStephan Mueller <smueller@chronox.de>
Signed-off-by: default avatarHarsh Jain <harsh@chelsio.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 5c86a8ff
......@@ -4,6 +4,7 @@ config CRYPTO_DEV_CHELSIO
select CRYPTO_SHA1
select CRYPTO_SHA256
select CRYPTO_SHA512
select CRYPTO_AUTHENC
---help---
The Chelsio Crypto Co-processor driver for T6 adapters.
......
......@@ -54,6 +54,12 @@
#include <crypto/algapi.h>
#include <crypto/hash.h>
#include <crypto/sha.h>
#include <crypto/authenc.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"
......@@ -62,6 +68,11 @@
#include "chcr_algo.h"
#include "chcr_crypto.h"
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;
......@@ -72,6 +83,16 @@ 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 ctx->dev->u_ctx;
......@@ -94,12 +115,37 @@ static inline unsigned int sgl_len(unsigned int n)
return (3 * n) / 2 + (n & 1) + 2;
}
static 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 = memcmp(&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 = memcmp(temp, (fw6_pld + 1), authsize);
}
if (cmp)
*err = -EBADMSG;
else
*err = 0;
}
/*
* 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 error_status)
int err)
{
struct crypto_tfm *tfm = req->tfm;
struct chcr_context *ctx = crypto_tfm_ctx(tfm);
......@@ -109,11 +155,27 @@ int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input,
unsigned int digestsize, updated_digestsize;
switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
case CRYPTO_ALG_TYPE_AEAD:
ctx_req.req.aead_req = (struct aead_request *)req;
ctx_req.ctx.reqctx = aead_request_ctx(ctx_req.req.aead_req);
dma_unmap_sg(&u_ctx->lldi.pdev->dev, ctx_req.req.aead_req->dst,
ctx_req.ctx.reqctx->dst_nents, DMA_FROM_DEVICE);
if (ctx_req.ctx.reqctx->skb) {
kfree_skb(ctx_req.ctx.reqctx->skb);
ctx_req.ctx.reqctx->skb = NULL;
}
if (ctx_req.ctx.reqctx->verify == VERIFY_SW) {
chcr_verify_tag(ctx_req.req.aead_req, input,
&err);
ctx_req.ctx.reqctx->verify = VERIFY_HW;
}
break;
case CRYPTO_ALG_TYPE_BLKCIPHER:
ctx_req.req.ablk_req = (struct ablkcipher_request *)req;
ctx_req.ctx.ablk_ctx =
ablkcipher_request_ctx(ctx_req.req.ablk_req);
if (!error_status) {
if (!err) {
fw6_pld = (struct cpl_fw6_pld *)input;
memcpy(ctx_req.req.ablk_req->info, &fw6_pld->data[2],
AES_BLOCK_SIZE);
......@@ -154,7 +216,7 @@ int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input,
}
break;
}
return 0;
return err;
}
/*
......@@ -380,6 +442,14 @@ static inline int map_writesg_phys_cpl(struct device *dev,
return 0;
}
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;
}
static inline int get_cryptoalg_subtype(struct crypto_tfm *tfm)
{
struct crypto_alg *alg = tfm->__crt_alg;
......@@ -447,7 +517,8 @@ static inline void create_wreq(struct chcr_context *ctx,
struct chcr_wr *chcr_req,
void *req, struct sk_buff *skb,
int kctx_len, int hash_sz,
unsigned int phys_dsgl)
int is_iv,
unsigned int sc_len)
{
struct uld_ctx *u_ctx = ULD_CTX(ctx);
int iv_loc = IV_DSGL;
......@@ -472,7 +543,7 @@ static inline void create_wreq(struct chcr_context *ctx,
chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req);
chcr_req->wreq.rx_chid_to_rx_q_id =
FILL_WR_RX_Q_ID(ctx->dev->tx_channel_id, qid,
(hash_sz) ? IV_NOP : iv_loc);
is_iv ? iv_loc : IV_NOP);
chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(ctx->dev->tx_channel_id);
chcr_req->ulptx.len = htonl((DIV_ROUND_UP((calc_tx_flits_ofld(skb) * 8),
......@@ -481,10 +552,7 @@ static inline void create_wreq(struct chcr_context *ctx,
chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(immdatalen);
chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) +
sizeof(chcr_req->key_ctx) +
kctx_len +
((hash_sz) ? DUMMY_BYTES :
(sizeof(struct cpl_rx_phys_dsgl) +
phys_dsgl)) + immdatalen);
kctx_len + sc_len + immdatalen);
}
/**
......@@ -582,7 +650,8 @@ static struct sk_buff
memcpy(reqctx->iv, req->info, ivsize);
write_buffer_to_skb(skb, &frags, reqctx->iv, ivsize);
write_sg_to_skb(skb, &frags, req->src, req->nbytes);
create_wreq(ctx, chcr_req, req, skb, kctx_len, 0, phys_dsgl);
create_wreq(ctx, chcr_req, req, skb, kctx_len, 0, 1,
sizeof(struct cpl_rx_phys_dsgl) + phys_dsgl);
reqctx->skb = skb;
skb_get(skb);
return skb;
......@@ -769,7 +838,7 @@ static inline void chcr_free_shash(struct crypto_shash *base_hash)
* @req - Cipher req base
*/
static struct sk_buff *create_hash_wr(struct ahash_request *req,
struct hash_wr_param *param)
struct hash_wr_param *param)
{
struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
......@@ -840,8 +909,8 @@ static struct sk_buff *create_hash_wr(struct ahash_request *req,
if (param->sg_len != 0)
write_sg_to_skb(skb, &frags, req->src, param->sg_len);
create_wreq(ctx, chcr_req, req, skb, kctx_len, hash_size_in_response,
0);
create_wreq(ctx, chcr_req, req, skb, kctx_len, hash_size_in_response, 0,
DUMMY_BYTES);
req_ctx->skb = skb;
skb_get(skb);
return skb;
......@@ -1249,6 +1318,1167 @@ static void chcr_hmac_cra_exit(struct crypto_tfm *tfm)
}
}
static int chcr_copy_assoc(struct aead_request *req,
struct chcr_aead_ctx *ctx)
{
SKCIPHER_REQUEST_ON_STACK(skreq, ctx->null);
skcipher_request_set_tfm(skreq, ctx->null);
skcipher_request_set_callback(skreq, aead_request_flags(req),
NULL, NULL);
skcipher_request_set_crypt(skreq, req->src, req->dst, req->assoclen,
NULL);
return crypto_skcipher_encrypt(skreq);
}
static unsigned char get_hmac(unsigned int authsize)
{
switch (authsize) {
case ICV_8:
return CHCR_SCMD_HMAC_CTRL_PL1;
case ICV_10:
return CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
case ICV_12:
return CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
}
return CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
}
static struct sk_buff *create_authenc_wr(struct aead_request *req,
unsigned short qid,
int size,
unsigned short op_type)
{
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
struct chcr_context *ctx = crypto_aead_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 phys_sge_parm sg_param;
struct scatterlist *src, *dst;
struct scatterlist src_sg[2], dst_sg[2];
unsigned int frags = 0, transhdr_len;
unsigned int ivsize = crypto_aead_ivsize(tfm), dst_size = 0;
unsigned int kctx_len = 0;
unsigned short stop_offset = 0;
unsigned int assoclen = req->assoclen;
unsigned int authsize = crypto_aead_authsize(tfm);
int err = 0;
int null = 0;
gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
GFP_ATOMIC;
if (aeadctx->enckey_len == 0 || (req->cryptlen == 0))
goto err;
if (op_type && req->cryptlen < crypto_aead_authsize(tfm))
goto err;
if (sg_nents_for_len(req->src, req->assoclen + req->cryptlen) < 0)
goto err;
src = scatterwalk_ffwd(src_sg, req->src, req->assoclen);
dst = src;
if (req->src != req->dst) {
err = chcr_copy_assoc(req, aeadctx);
if (err)
return ERR_PTR(err);
dst = scatterwalk_ffwd(dst_sg, req->dst, req->assoclen);
}
if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_NULL) {
null = 1;
assoclen = 0;
}
reqctx->dst_nents = sg_nents_for_len(dst, req->cryptlen +
(op_type ? -authsize : authsize));
if (reqctx->dst_nents <= 0) {
pr_err("AUTHENC:Invalid Destination sg entries\n");
goto err;
}
dst_size = get_space_for_phys_dsgl(reqctx->dst_nents);
kctx_len = (ntohl(KEY_CONTEXT_CTX_LEN_V(aeadctx->key_ctx_hdr)) << 4)
- sizeof(chcr_req->key_ctx);
transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
skb = alloc_skb((transhdr_len + sizeof(struct sge_opaque_hdr)), flags);
if (!skb)
goto err;
/* LLD is going to write the sge hdr. */
skb_reserve(skb, sizeof(struct sge_opaque_hdr));
/* Write WR */
chcr_req = (struct chcr_wr *) __skb_put(skb, transhdr_len);
memset(chcr_req, 0, transhdr_len);
stop_offset = (op_type == 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(ctx->dev->tx_channel_id, 2,
(ivsize ? (assoclen + 1) : 0));
chcr_req->sec_cpl.pldlen = htonl(assoclen + ivsize + req->cryptlen);
chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
assoclen ? 1 : 0, assoclen,
assoclen + ivsize + 1,
(stop_offset & 0x1F0) >> 4);
chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(
stop_offset & 0xF,
null ? 0 : assoclen + ivsize + 1,
stop_offset, stop_offset);
chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
(op_type == CHCR_ENCRYPT_OP) ? 1 : 0,
CHCR_SCMD_CIPHER_MODE_AES_CBC,
actx->auth_mode, aeadctx->hmac_ctrl,
ivsize >> 1);
chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
0, 1, dst_size);
chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
if (op_type == CHCR_ENCRYPT_OP)
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 + (DIV_ROUND_UP(aeadctx->enckey_len, 16) <<
4), actx->h_iopad, kctx_len -
(DIV_ROUND_UP(aeadctx->enckey_len, 16) << 4));
phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
sg_param.nents = reqctx->dst_nents;
sg_param.obsize = req->cryptlen + (op_type ? -authsize : authsize);
sg_param.qid = qid;
sg_param.align = 0;
if (map_writesg_phys_cpl(&u_ctx->lldi.pdev->dev, phys_cpl, dst,
&sg_param))
goto dstmap_fail;
skb_set_transport_header(skb, transhdr_len);
if (assoclen) {
/* AAD buffer in */
write_sg_to_skb(skb, &frags, req->src, assoclen);
}
write_buffer_to_skb(skb, &frags, req->iv, ivsize);
write_sg_to_skb(skb, &frags, src, req->cryptlen);
create_wreq(ctx, chcr_req, req, skb, kctx_len, size, 1,
sizeof(struct cpl_rx_phys_dsgl) + dst_size);
reqctx->skb = skb;
skb_get(skb);
return skb;
dstmap_fail:
/* ivmap_fail: */
kfree_skb(skb);
err:
return ERR_PTR(-EINVAL);
}
static void aes_gcm_empty_pld_pad(struct scatterlist *sg,
unsigned short offset)
{
struct page *spage;
unsigned char *addr;
spage = sg_page(sg);
get_page(spage); /* so that it is not freed by NIC */
#ifdef KMAP_ATOMIC_ARGS
addr = kmap_atomic(spage, KM_SOFTIRQ0);
#else
addr = kmap_atomic(spage);
#endif
memset(addr + sg->offset, 0, offset + 1);
kunmap_atomic(addr);
}
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 void generate_b0(struct aead_request *req,
struct chcr_aead_ctx *aeadctx,
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, reqctx->iv, 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);
}
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,
struct chcr_aead_ctx *aeadctx,
unsigned int sub_type,
unsigned short op_type)
{
struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
int rc = 0;
if (req->assoclen > T5_MAX_AAD_SIZE) {
pr_err("CCM: Unsupported AAD data. It should be < %d\n",
T5_MAX_AAD_SIZE);
return -EINVAL;
}
if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
reqctx->iv[0] = 3;
memcpy(reqctx->iv + 1, &aeadctx->salt[0], 3);
memcpy(reqctx->iv + 4, req->iv, 8);
memset(reqctx->iv + 12, 0, 4);
*((unsigned short *)(reqctx->scratch_pad + 16)) =
htons(req->assoclen - 8);
} else {
memcpy(reqctx->iv, req->iv, 16);
*((unsigned short *)(reqctx->scratch_pad + 16)) =
htons(req->assoclen);
}
generate_b0(req, aeadctx, op_type);
/* zero the ctr value */
memset(reqctx->iv + 15 - reqctx->iv[0], 0, reqctx->iv[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 chcr_context *chcrctx)
{
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
unsigned int ivsize = AES_BLOCK_SIZE;
unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM;
unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC;
unsigned int c_id = chcrctx->dev->tx_channel_id;
unsigned int ccm_xtra;
unsigned char tag_offset = 0, auth_offset = 0;
unsigned char hmac_ctrl = get_hmac(crypto_aead_authsize(tfm));
unsigned int assoclen;
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 ?
(assoclen + ivsize + 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(c_id,
2, (ivsize ? (assoclen + 1) : 0) +
ccm_xtra);
sec_cpl->pldlen =
htonl(assoclen + ivsize + 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, assoclen + ccm_xtra, assoclen
+ ivsize + 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, hmac_ctrl,
ivsize >> 1);
sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0,
1, dst_size);
}
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;
}
}
if (aeadctx->enckey_len == 0) {
pr_err("CCM: Encryption key not set\n");
return -EINVAL;
}
return 0;
}
unsigned int fill_aead_req_fields(struct sk_buff *skb,
struct aead_request *req,
struct scatterlist *src,
unsigned int ivsize,
struct chcr_aead_ctx *aeadctx)
{
unsigned int frags = 0;
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
/* b0 and aad length(if available) */
write_buffer_to_skb(skb, &frags, reqctx->scratch_pad, CCM_B0_SIZE +
(req->assoclen ? CCM_AAD_FIELD_SIZE : 0));
if (req->assoclen) {
if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
write_sg_to_skb(skb, &frags, req->src,
req->assoclen - 8);
else
write_sg_to_skb(skb, &frags, req->src, req->assoclen);
}
write_buffer_to_skb(skb, &frags, reqctx->iv, ivsize);
if (req->cryptlen)
write_sg_to_skb(skb, &frags, src, req->cryptlen);
return frags;
}
static struct sk_buff *create_aead_ccm_wr(struct aead_request *req,
unsigned short qid,
int size,
unsigned short op_type)
{
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
struct chcr_context *ctx = crypto_aead_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 phys_sge_parm sg_param;
struct scatterlist *src, *dst;
struct scatterlist src_sg[2], dst_sg[2];
unsigned int frags = 0, transhdr_len, ivsize = AES_BLOCK_SIZE;
unsigned int dst_size = 0, kctx_len;
unsigned int sub_type;
unsigned int authsize = crypto_aead_authsize(tfm);
int err = 0;
gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
GFP_ATOMIC;
if (op_type && req->cryptlen < crypto_aead_authsize(tfm))
goto err;
if (sg_nents_for_len(req->src, req->assoclen + req->cryptlen) < 0)
goto err;
sub_type = get_aead_subtype(tfm);
src = scatterwalk_ffwd(src_sg, req->src, req->assoclen);
dst = src;
if (req->src != req->dst) {
err = chcr_copy_assoc(req, aeadctx);
if (err) {
pr_err("AAD copy to destination buffer fails\n");
return ERR_PTR(err);
}
dst = scatterwalk_ffwd(dst_sg, req->dst, req->assoclen);
}
reqctx->dst_nents = sg_nents_for_len(dst, req->cryptlen +
(op_type ? -authsize : authsize));
if (reqctx->dst_nents <= 0) {
pr_err("CCM:Invalid Destination sg entries\n");
goto err;
}
if (aead_ccm_validate_input(op_type, req, aeadctx, sub_type))
goto err;
dst_size = get_space_for_phys_dsgl(reqctx->dst_nents);
kctx_len = ((DIV_ROUND_UP(aeadctx->enckey_len, 16)) << 4) * 2;
transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
skb = alloc_skb((transhdr_len + sizeof(struct sge_opaque_hdr)), flags);
if (!skb)
goto err;
skb_reserve(skb, sizeof(struct sge_opaque_hdr));
chcr_req = (struct chcr_wr *) __skb_put(skb, transhdr_len);
memset(chcr_req, 0, transhdr_len);
fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, op_type, ctx);
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 + (DIV_ROUND_UP(aeadctx->enckey_len, 16) *
16), aeadctx->key, aeadctx->enckey_len);
phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
if (ccm_format_packet(req, aeadctx, sub_type, op_type))
goto dstmap_fail;
sg_param.nents = reqctx->dst_nents;
sg_param.obsize = req->cryptlen + (op_type ? -authsize : authsize);
sg_param.qid = qid;
sg_param.align = 0;
if (map_writesg_phys_cpl(&u_ctx->lldi.pdev->dev, phys_cpl, dst,
&sg_param))
goto dstmap_fail;
skb_set_transport_header(skb, transhdr_len);
frags = fill_aead_req_fields(skb, req, src, ivsize, aeadctx);
create_wreq(ctx, chcr_req, req, skb, kctx_len, 0, 1,
sizeof(struct cpl_rx_phys_dsgl) + dst_size);
reqctx->skb = skb;
skb_get(skb);
return skb;
dstmap_fail:
kfree_skb(skb);
skb = NULL;
err:
return ERR_PTR(-EINVAL);
}
static struct sk_buff *create_gcm_wr(struct aead_request *req,
unsigned short qid,
int size,
unsigned short op_type)
{
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
struct chcr_context *ctx = crypto_aead_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 phys_sge_parm sg_param;
struct scatterlist *src, *dst;
struct scatterlist src_sg[2], dst_sg[2];
unsigned int frags = 0, transhdr_len;
unsigned int ivsize = AES_BLOCK_SIZE;
unsigned int dst_size = 0, kctx_len;
unsigned char tag_offset = 0;
unsigned int crypt_len = 0;
unsigned int authsize = crypto_aead_authsize(tfm);
unsigned char hmac_ctrl = get_hmac(authsize);
int err = 0;
gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
GFP_ATOMIC;
/* validate key size */
if (aeadctx->enckey_len == 0)
goto err;
if (op_type && req->cryptlen < crypto_aead_authsize(tfm))
goto err;
if (sg_nents_for_len(req->src, req->assoclen + req->cryptlen) < 0)
goto err;
src = scatterwalk_ffwd(src_sg, req->src, req->assoclen);
dst = src;
if (req->src != req->dst) {
err = chcr_copy_assoc(req, aeadctx);
if (err)
return ERR_PTR(err);
dst = scatterwalk_ffwd(dst_sg, req->dst, req->assoclen);
}
if (!req->cryptlen)
/* null-payload is not supported in the hardware.
* software is sending block size
*/
crypt_len = AES_BLOCK_SIZE;
else
crypt_len = req->cryptlen;
reqctx->dst_nents = sg_nents_for_len(dst, req->cryptlen +
(op_type ? -authsize : authsize));
if (reqctx->dst_nents <= 0) {
pr_err("GCM:Invalid Destination sg entries\n");
goto err;
}
dst_size = get_space_for_phys_dsgl(reqctx->dst_nents);
kctx_len = ((DIV_ROUND_UP(aeadctx->enckey_len, 16)) << 4) +
AEAD_H_SIZE;
transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
skb = alloc_skb((transhdr_len + sizeof(struct sge_opaque_hdr)), flags);
if (!skb)
goto err;
/* NIC driver is going to write the sge hdr. */
skb_reserve(skb, sizeof(struct sge_opaque_hdr));
chcr_req = (struct chcr_wr *)__skb_put(skb, transhdr_len);
memset(chcr_req, 0, transhdr_len);
if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106)
req->assoclen -= 8;
tag_offset = (op_type == CHCR_ENCRYPT_OP) ? 0 : authsize;
chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(
ctx->dev->tx_channel_id, 2, (ivsize ?
(req->assoclen + 1) : 0));
chcr_req->sec_cpl.pldlen = htonl(req->assoclen + ivsize + crypt_len);
chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
req->assoclen ? 1 : 0, req->assoclen,
req->assoclen + ivsize + 1, 0);
if (req->cryptlen) {
chcr_req->sec_cpl.cipherstop_lo_authinsert =
FILL_SEC_CPL_AUTHINSERT(0, req->assoclen + ivsize + 1,
tag_offset, tag_offset);
chcr_req->sec_cpl.seqno_numivs =
FILL_SEC_CPL_SCMD0_SEQNO(op_type, (op_type ==
CHCR_ENCRYPT_OP) ? 1 : 0,
CHCR_SCMD_CIPHER_MODE_AES_GCM,
CHCR_SCMD_AUTH_MODE_GHASH, hmac_ctrl,
ivsize >> 1);
} else {
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(op_type,
(op_type == CHCR_ENCRYPT_OP) ?
1 : 0, CHCR_SCMD_CIPHER_MODE_AES_CBC,
0, 0, ivsize >> 1);
}
chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
0, 1, 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 + (DIV_ROUND_UP(aeadctx->enckey_len, 16) *
16), GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE);
/* prepare a 16 byte iv */
/* S A L T | IV | 0x00000001 */
if (get_aead_subtype(tfm) ==
CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {
memcpy(reqctx->iv, aeadctx->salt, 4);
memcpy(reqctx->iv + 4, req->iv, 8);
} else {
memcpy(reqctx->iv, req->iv, 12);
}
*((unsigned int *)(reqctx->iv + 12)) = htonl(0x01);
phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
sg_param.nents = reqctx->dst_nents;
sg_param.obsize = req->cryptlen + (op_type ? -authsize : authsize);
sg_param.qid = qid;
sg_param.align = 0;
if (map_writesg_phys_cpl(&u_ctx->lldi.pdev->dev, phys_cpl, dst,
&sg_param))
goto dstmap_fail;
skb_set_transport_header(skb, transhdr_len);
write_sg_to_skb(skb, &frags, req->src, req->assoclen);
write_buffer_to_skb(skb, &frags, reqctx->iv, ivsize);
if (req->cryptlen) {
write_sg_to_skb(skb, &frags, src, req->cryptlen);
} else {
aes_gcm_empty_pld_pad(req->dst, authsize - 1);
write_sg_to_skb(skb, &frags, dst, crypt_len);
}
create_wreq(ctx, chcr_req, req, skb, kctx_len, size, 1,
sizeof(struct cpl_rx_phys_dsgl) + dst_size);
reqctx->skb = skb;
skb_get(skb);
return skb;
dstmap_fail:
/* ivmap_fail: */
kfree_skb(skb);
skb = NULL;
err:
return skb;
}
static int chcr_aead_cra_init(struct crypto_aead *tfm)
{
struct chcr_context *ctx = crypto_aead_ctx(tfm);
struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
crypto_aead_set_reqsize(tfm, sizeof(struct chcr_aead_reqctx));
aeadctx->null = crypto_get_default_null_skcipher();
if (IS_ERR(aeadctx->null))
return PTR_ERR(aeadctx->null);
return chcr_device_init(ctx);
}
static void chcr_aead_cra_exit(struct crypto_aead *tfm)
{
crypto_put_default_null_skcipher();
}
static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm,
unsigned int authsize)
{
struct chcr_aead_ctx *aeadctx = AEAD_CTX(crypto_aead_ctx(tfm));
aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP;
aeadctx->mayverify = VERIFY_HW;
return 0;
}
static int chcr_authenc_setauthsize(struct crypto_aead *tfm,
unsigned int authsize)
{
struct chcr_aead_ctx *aeadctx = AEAD_CTX(crypto_aead_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 0;
}
static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
{
struct chcr_aead_ctx *aeadctx = AEAD_CTX(crypto_aead_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:
crypto_tfm_set_flags((struct crypto_tfm *) tfm,
CRYPTO_TFM_RES_BAD_KEY_LEN);
return -EINVAL;
}
return 0;
}
static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm,
unsigned int authsize)
{
struct chcr_aead_ctx *aeadctx = AEAD_CTX(crypto_aead_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:
crypto_tfm_set_flags((struct crypto_tfm *)tfm,
CRYPTO_TFM_RES_BAD_KEY_LEN);
return -EINVAL;
}
return 0;
}
static int chcr_ccm_setauthsize(struct crypto_aead *tfm,
unsigned int authsize)
{
struct chcr_aead_ctx *aeadctx = AEAD_CTX(crypto_aead_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:
crypto_tfm_set_flags((struct crypto_tfm *)tfm,
CRYPTO_TFM_RES_BAD_KEY_LEN);
return -EINVAL;
}
return 0;
}
static int chcr_aead_ccm_setkey(struct crypto_aead *aead,
const u8 *key,
unsigned int keylen)
{
struct chcr_context *ctx = crypto_aead_ctx(aead);
struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
unsigned char ck_size, mk_size;
int key_ctx_size = 0;
memcpy(aeadctx->key, key, keylen);
aeadctx->enckey_len = keylen;
key_ctx_size = sizeof(struct _key_ctx) +
((DIV_ROUND_UP(keylen, 16)) << 4) * 2;
if (keylen == AES_KEYSIZE_128) {
mk_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
ck_size = CHCR_KEYCTX_CIPHER_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 {
crypto_tfm_set_flags((struct crypto_tfm *)aead,
CRYPTO_TFM_RES_BAD_KEY_LEN);
aeadctx->enckey_len = 0;
return -EINVAL;
}
aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0,
key_ctx_size >> 4);
return 0;
}
static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key,
unsigned int keylen)
{
struct chcr_context *ctx = crypto_aead_ctx(aead);
struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
if (keylen < 3) {
crypto_tfm_set_flags((struct crypto_tfm *)aead,
CRYPTO_TFM_RES_BAD_KEY_LEN);
aeadctx->enckey_len = 0;
return -EINVAL;
}
keylen -= 3;
memcpy(aeadctx->salt, key + keylen, 3);
return chcr_aead_ccm_setkey(aead, key, keylen);
}
static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key,
unsigned int keylen)
{
struct chcr_context *ctx = crypto_aead_ctx(aead);
struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx);
struct blkcipher_desc h_desc;
struct scatterlist src[1];
unsigned int ck_size;
int ret = 0, key_ctx_size = 0;
if (get_aead_subtype(aead) ==
CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {
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 {
crypto_tfm_set_flags((struct crypto_tfm *)aead,
CRYPTO_TFM_RES_BAD_KEY_LEN);
aeadctx->enckey_len = 0;
pr_err("GCM: Invalid key length %d", keylen);
ret = -EINVAL;
goto out;
}
memcpy(aeadctx->key, key, keylen);
aeadctx->enckey_len = keylen;
key_ctx_size = sizeof(struct _key_ctx) +
((DIV_ROUND_UP(keylen, 16)) << 4) +
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) using sync aes
* blkcipher It will go on key context
*/
h_desc.tfm = crypto_alloc_blkcipher("cbc(aes-generic)", 0, 0);
if (IS_ERR(h_desc.tfm)) {
aeadctx->enckey_len = 0;
ret = -ENOMEM;
goto out;
}
h_desc.flags = 0;
ret = crypto_blkcipher_setkey(h_desc.tfm, key, keylen);
if (ret) {
aeadctx->enckey_len = 0;
goto out1;
}
memset(gctx->ghash_h, 0, AEAD_H_SIZE);
sg_init_one(&src[0], gctx->ghash_h, AEAD_H_SIZE);
ret = crypto_blkcipher_encrypt(&h_desc, &src[0], &src[0], AEAD_H_SIZE);
out1:
crypto_free_blkcipher(h_desc.tfm);
out:
return ret;
}
static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
unsigned int keylen)
{
struct chcr_context *ctx = crypto_aead_ctx(authenc);
struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
/* it contains auth and cipher key both*/
struct crypto_authenc_keys keys;
unsigned int bs;
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 = NULL;
struct algo_param param;
int align;
u8 *o_ptr = NULL;
if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
goto out;
}
if (get_alg_config(&param, max_authsize)) {
pr_err("chcr : Unsupported digest size\n");
goto out;
}
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("chcr : 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;
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("chcr : Base driver cannot be loaded\n");
goto out;
}
{
SHASH_DESC_ON_STACK(shash, base_hash);
shash->tfm = base_hash;
shash->flags = crypto_shash_get_flags(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("chcr : 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) +
((DIV_ROUND_UP(keys.enckeylen, 16)) << 4) +
(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);
return 0;
}
out:
aeadctx->enckey_len = 0;
if (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_context *ctx = crypto_aead_ctx(authenc);
struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
struct crypto_authenc_keys keys;
/* it contains auth and cipher key both*/
int key_ctx_len = 0;
unsigned char ck_size = 0;
if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
goto out;
}
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("chcr : Unsupported cipher key\n");
goto out;
}
memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
aeadctx->enckey_len = keys.enckeylen;
get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
aeadctx->enckey_len << 3);
key_ctx_len = sizeof(struct _key_ctx)
+ ((DIV_ROUND_UP(keys.enckeylen, 16)) << 4);
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;
return 0;
out:
aeadctx->enckey_len = 0;
return -EINVAL;
}
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);
reqctx->verify = VERIFY_HW;
switch (get_aead_subtype(tfm)) {
case CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC:
case CRYPTO_ALG_SUB_TYPE_AEAD_NULL:
return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
create_authenc_wr);
case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
create_aead_ccm_wr);
default:
return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
create_gcm_wr);
}
}
static int chcr_aead_decrypt(struct aead_request *req)
{
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
struct chcr_aead_ctx *aeadctx = AEAD_CTX(crypto_aead_ctx(tfm));
struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
int size;
if (aeadctx->mayverify == VERIFY_SW) {
size = crypto_aead_maxauthsize(tfm);
reqctx->verify = VERIFY_SW;
} else {
size = 0;
reqctx->verify = VERIFY_HW;
}
switch (get_aead_subtype(tfm)) {
case CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC:
case CRYPTO_ALG_SUB_TYPE_AEAD_NULL:
return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
create_authenc_wr);
case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
create_aead_ccm_wr);
default:
return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
create_gcm_wr);
}
}
static int chcr_aead_op(struct aead_request *req,
unsigned short op_type,
int size,
create_wr_t create_wr_fn)
{
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
struct chcr_context *ctx = crypto_aead_ctx(tfm);
struct uld_ctx *u_ctx = ULD_CTX(ctx);
struct sk_buff *skb;
if (ctx && !ctx->dev) {
pr_err("chcr : %s : No crypto device.\n", __func__);
return -ENXIO;
}
if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
ctx->tx_channel_id)) {
if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
return -EBUSY;
}
/* Form a WR from req */
skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[ctx->tx_channel_id], size,
op_type);
if (IS_ERR(skb) || skb == NULL) {
pr_err("chcr : %s : failed to form WR. No memory\n", __func__);
return PTR_ERR(skb);
}
skb->dev = u_ctx->lldi.ports[0];
set_wr_txq(skb, CPL_PRIORITY_DATA, ctx->tx_channel_id);
chcr_send_wr(skb);
return -EINPROGRESS;
}
static struct chcr_alg_template driver_algs[] = {
/* AES-CBC */
{
......@@ -1256,7 +2486,7 @@ static struct chcr_alg_template driver_algs[] = {
.is_registered = 0,
.alg.crypto = {
.cra_name = "cbc(aes)",
.cra_driver_name = "cbc(aes-chcr)",
.cra_driver_name = "cbc-aes-chcr",
.cra_priority = CHCR_CRA_PRIORITY,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
CRYPTO_ALG_ASYNC,
......@@ -1283,7 +2513,7 @@ static struct chcr_alg_template driver_algs[] = {
.is_registered = 0,
.alg.crypto = {
.cra_name = "xts(aes)",
.cra_driver_name = "xts(aes-chcr)",
.cra_driver_name = "xts-aes-chcr",
.cra_priority = CHCR_CRA_PRIORITY,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
CRYPTO_ALG_ASYNC,
......@@ -1376,7 +2606,7 @@ static struct chcr_alg_template driver_algs[] = {
.halg.digestsize = SHA1_DIGEST_SIZE,
.halg.base = {
.cra_name = "hmac(sha1)",
.cra_driver_name = "hmac(sha1-chcr)",
.cra_driver_name = "hmac-sha1-chcr",
.cra_blocksize = SHA1_BLOCK_SIZE,
}
}
......@@ -1388,7 +2618,7 @@ static struct chcr_alg_template driver_algs[] = {
.halg.digestsize = SHA224_DIGEST_SIZE,
.halg.base = {
.cra_name = "hmac(sha224)",
.cra_driver_name = "hmac(sha224-chcr)",
.cra_driver_name = "hmac-sha224-chcr",
.cra_blocksize = SHA224_BLOCK_SIZE,
}
}
......@@ -1400,7 +2630,7 @@ static struct chcr_alg_template driver_algs[] = {
.halg.digestsize = SHA256_DIGEST_SIZE,
.halg.base = {
.cra_name = "hmac(sha256)",
.cra_driver_name = "hmac(sha256-chcr)",
.cra_driver_name = "hmac-sha256-chcr",
.cra_blocksize = SHA256_BLOCK_SIZE,
}
}
......@@ -1412,7 +2642,7 @@ static struct chcr_alg_template driver_algs[] = {
.halg.digestsize = SHA384_DIGEST_SIZE,
.halg.base = {
.cra_name = "hmac(sha384)",
.cra_driver_name = "hmac(sha384-chcr)",
.cra_driver_name = "hmac-sha384-chcr",
.cra_blocksize = SHA384_BLOCK_SIZE,
}
}
......@@ -1424,11 +2654,205 @@ static struct chcr_alg_template driver_algs[] = {
.halg.digestsize = SHA512_DIGEST_SIZE,
.halg.base = {
.cra_name = "hmac(sha512)",
.cra_driver_name = "hmac(sha512-chcr)",
.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_ctxsize = sizeof(struct chcr_context) +
sizeof(struct chcr_aead_ctx) +
sizeof(struct chcr_gcm_ctx),
},
.ivsize = 12,
.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_ctxsize = sizeof(struct chcr_context) +
sizeof(struct chcr_aead_ctx) +
sizeof(struct chcr_gcm_ctx),
},
.ivsize = 8,
.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_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_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_AEAD_AUTHENC,
.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_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_AEAD_AUTHENC,
.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_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_AEAD_AUTHENC,
.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_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_AEAD_AUTHENC,
.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_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_AEAD_AUTHENC,
.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_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_AEAD_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_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,
}
},
};
/*
......@@ -1446,6 +2870,11 @@ static int chcr_unregister_alg(void)
crypto_unregister_alg(
&driver_algs[i].alg.crypto);
break;
case CRYPTO_ALG_TYPE_AEAD:
if (driver_algs[i].is_registered)
crypto_unregister_aead(
&driver_algs[i].alg.aead);
break;
case CRYPTO_ALG_TYPE_AHASH:
if (driver_algs[i].is_registered)
crypto_unregister_ahash(
......@@ -1480,6 +2909,19 @@ static int chcr_register_alg(void)
err = crypto_register_alg(&driver_algs[i].alg.crypto);
name = driver_algs[i].alg.crypto.cra_driver_name;
break;
case CRYPTO_ALG_TYPE_AEAD:
driver_algs[i].alg.aead.base.cra_priority =
CHCR_CRA_PRIORITY;
driver_algs[i].alg.aead.base.cra_flags =
CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC;
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;
......
......@@ -258,13 +258,15 @@ enum {
* where they indicate the size of the integrity check value (ICV)
*/
enum {
AES_CCM_ICV_4 = 4,
AES_CCM_ICV_6 = 6,
AES_CCM_ICV_8 = 8,
AES_CCM_ICV_10 = 10,
AES_CCM_ICV_12 = 12,
AES_CCM_ICV_14 = 14,
AES_CCM_ICV_16 = 16
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 hash_op_params {
......
......@@ -109,14 +109,12 @@ static int cpl_fw6_pld_handler(struct chcr_dev *dev,
if (ack_err_status) {
if (CHK_MAC_ERR_BIT(ack_err_status) ||
CHK_PAD_ERR_BIT(ack_err_status))
error_status = -EINVAL;
error_status = -EBADMSG;
}
/* call completion callback with failure status */
if (req) {
if (!chcr_handle_resp(req, input, error_status))
req->complete(req, error_status);
else
return -EINVAL;
error_status = chcr_handle_resp(req, input, error_status);
req->complete(req, error_status);
} else {
pr_err("Incorrect request address from the firmware\n");
return -EFAULT;
......
......@@ -72,9 +72,7 @@ struct chcr_wr {
};
struct chcr_dev {
/* Request submited to h/w and waiting for response. */
spinlock_t lock_chcr_dev;
struct crypto_queue pending_queue;
struct uld_ctx *u_ctx;
unsigned char tx_channel_id;
};
......
......@@ -36,6 +36,14 @@
#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
#define T5_MAX_AAD_SIZE 512
/* Define following if h/w is not dropping the AAD and IV data before
* giving the processed data
*/
......@@ -63,22 +71,36 @@
#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_GENERIC_AES 4
#define CHCR_SCMD_CIPHER_MODE_AES_XTS 6
#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
......@@ -106,12 +128,20 @@
#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_AEAD_AUTHENC 0x04000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_CCM 0x05000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309 0x06000000
#define CRYPTO_ALG_SUB_TYPE_AEAD_NULL 0x07000000
#define CRYPTO_ALG_SUB_TYPE_CTR 0x08000000
#define CRYPTO_ALG_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\
CRYPTO_ALG_SUB_TYPE_HASH_HMAC)
#define MAX_SALT 4
#define MAX_SCRATCH_PAD_SIZE 32
#define CHCR_HASH_MAX_BLOCK_SIZE_64 64
......@@ -126,6 +156,42 @@ struct ablk_ctx {
unsigned char ciph_mode;
u8 rrkey[AES_MAX_KEY_SIZE];
};
struct chcr_aead_reqctx {
struct sk_buff *skb;
short int dst_nents;
u16 verify;
u8 iv[CHCR_MAX_CRYPTO_IV_LEN];
unsigned char scratch_pad[MAX_SCRATCH_PAD_SIZE];
};
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 {
struct chcr_gcm_ctx gcm[0];
struct chcr_authenc_ctx authenc[0];
};
struct chcr_aead_ctx {
__be32 key_ctx_hdr;
unsigned int enckey_len;
struct crypto_skcipher *null;
u8 salt[MAX_SALT];
u8 key[CHCR_AES_MAX_KEY_LEN];
u16 hmac_ctrl;
u16 mayverify;
struct __aead_ctx ctx[0];
};
struct hmac_ctx {
......@@ -137,6 +203,7 @@ struct hmac_ctx {
struct __crypto_ctx {
struct hmac_ctx hmacctx[0];
struct ablk_ctx ablkctx[0];
struct chcr_aead_ctx aeadctx[0];
};
struct chcr_context {
......@@ -171,16 +238,19 @@ struct chcr_alg_template {
union {
struct crypto_alg crypto;
struct ahash_alg hash;
struct aead_alg aead;
} alg;
};
struct chcr_req_ctx {
union {
struct ahash_request *ahash_req;
struct aead_request *aead_req;
struct ablkcipher_request *ablk_req;
} req;
union {
struct chcr_ahash_req_ctx *ahash_ctx;
struct chcr_aead_reqctx *reqctx;
struct chcr_blkcipher_req_ctx *ablk_ctx;
} ctx;
};
......@@ -190,9 +260,15 @@ struct sge_opaque_hdr {
dma_addr_t addr[MAX_SKB_FRAGS + 1];
};
typedef struct sk_buff *(*create_wr_t)(struct crypto_async_request *req,
struct chcr_context *ctx,
typedef struct sk_buff *(*create_wr_t)(struct aead_request *req,
unsigned short qid,
int size,
unsigned short op_type);
static int chcr_aead_op(struct aead_request *req_base,
unsigned short op_type,
int size,
create_wr_t create_wr_fn);
static inline int get_aead_subtype(struct crypto_aead *aead);
#endif /* __CHCR_CRYPTO_H__ */
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