From: Keerthy <j-keerthy@xxxxxx>
Add support for sa2ul hardware AEAD for hmac(sha256),cbc(aes) and
hmac(sha1),cbc(aes) algorithms.
Signed-off-by: Keerthy <j-keerthy@xxxxxx>
[t-kristo@xxxxxx: number of bug fixes, major refactoring and cleanup of
code]
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
---
drivers/crypto/sa2ul.c | 539 +++++++++++++++++++++++++++++++++++++++--
drivers/crypto/sa2ul.h | 1 +
2 files changed, 519 insertions(+), 21 deletions(-)
diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c
index 80e7a2a3366b..899ef90a3d76 100644
--- a/drivers/crypto/sa2ul.c
+++ b/drivers/crypto/sa2ul.c
@@ -9,6 +9,7 @@
* Tero Kristo
*/
#include <linux/clk.h>
+#include <linux/cryptohash.h>
#include <linux/dmaengine.h>
#include <linux/dmapool.h>
#include <linux/module.h>
@@ -17,7 +18,9 @@
#include <linux/pm_runtime.h>
#include <crypto/aes.h>
+#include <crypto/authenc.h>
#include <crypto/des.h>
+#include <crypto/internal/aead.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/skcipher.h>
#include <crypto/scatterwalk.h>
@@ -77,6 +80,7 @@ static struct device *sa_k3_dev;
* @iv_size: Initialization Vector size
* @akey: Authentication key
* @akey_len: Authentication key length
+ * @enc: True, if this is an encode request
*/
struct sa_cmdl_cfg {
int aalg;
@@ -85,6 +89,7 @@ struct sa_cmdl_cfg {
u8 iv_size;
const u8 *akey;
u16 akey_len;
+ bool enc;
};
/**
@@ -101,6 +106,8 @@ struct sa_cmdl_cfg {
* @mci_dec: Mode Control Instruction for Decryption
* @inv_key: Whether the encryption algorithm demands key inversion
* @ctx: Pointer to the algorithm context
+ * @keyed_mac: Whether the authentication algorithm has key
+ * @prep_iopad: Function pointer to generate intermediate ipad/opad
*/
struct algo_data {
struct sa_eng_info enc_eng;
@@ -115,6 +122,9 @@ struct algo_data {
u8 *mci_dec;
bool inv_key;
struct sa_tfm_ctx *ctx;
+ bool keyed_mac;
+ void (*prep_iopad)(struct algo_data *algo, const u8 *key,
+ u16 key_sz, u32 *ipad, u32 *opad);
};
/**
@@ -128,6 +138,7 @@ struct sa_alg_tmpl {
union {
struct skcipher_alg skcipher;
struct ahash_alg ahash;
+ struct aead_alg aead;
} alg;
bool registered;
};
@@ -231,6 +242,38 @@ static u8 mci_cbc_dec_array[3][MODE_CONTROL_BYTES] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
};
+/*
+ * Mode Control Instructions for various Key lengths 128, 192, 256
+ * For CBC (Cipher Block Chaining) mode for encryption
+ */
+static u8 mci_cbc_enc_no_iv_array[3][MODE_CONTROL_BYTES] = {
+ { 0x21, 0x00, 0x00, 0x18, 0x88, 0x0a, 0xaa, 0x4b, 0x7e, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+ { 0x21, 0x00, 0x00, 0x18, 0x88, 0x4a, 0xaa, 0x4b, 0x7e, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+ { 0x21, 0x00, 0x00, 0x18, 0x88, 0x8a, 0xaa, 0x4b, 0x7e, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+};
+
+/*
+ * Mode Control Instructions for various Key lengths 128, 192, 256
+ * For CBC (Cipher Block Chaining) mode for decryption
+ */
+static u8 mci_cbc_dec_no_iv_array[3][MODE_CONTROL_BYTES] = {
+ { 0x31, 0x00, 0x00, 0x80, 0x8a, 0xca, 0x98, 0xf4, 0x40, 0xc0,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+ { 0x31, 0x00, 0x00, 0x84, 0x8a, 0xca, 0x98, 0xf4, 0x40, 0xc0,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+ { 0x31, 0x00, 0x00, 0x88, 0x8a, 0xca, 0x98, 0xf4, 0x40, 0xc0,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+};
+
/*
* Mode Control Instructions for various Key lengths 128, 192, 256
* For ECB (Electronic Code Book) mode for encryption
@@ -310,6 +353,82 @@ static void sa_swiz_128(u8 *in, u16 len)
}
}
+/* Prepare the ipad and opad from key as per SHA algorithm step 1*/
+static void prepare_kiopad(u8 *k_ipad, u8 *k_opad, const u8 *key, u16 key_sz)
+{
+ int i;
+
+ for (i = 0; i < key_sz; i++) {
+ k_ipad[i] = key[i] ^ 0x36;
+ k_opad[i] = key[i] ^ 0x5c;
+ }
+
+ /* Instead of XOR with 0 */
+ for (; i < SHA_MESSAGE_BYTES; i++) {
+ k_ipad[i] = 0x36;
+ k_opad[i] = 0x5c;
+ }
+}
+
+static void sa_export_shash(struct shash_desc *hash, int block_size,
+ int digest_size, u32 *out)
+{
+ union {
+ struct sha1_state sha1;
+ struct sha256_state sha256;
+ struct sha512_state sha512;
+ } sha;
+ void *state;
+ u32 *result;
+ int i;
+
+ switch (digest_size) {
+ case SHA1_DIGEST_SIZE:
+ state = &sha.sha1;
+ result = sha.sha1.state;
+ break;
+ case SHA256_DIGEST_SIZE:
+ state = &sha.sha256;
+ result = sha.sha256.state;
+ break;
+ default:
+ dev_err(sa_k3_dev, "%s: bad digest_size=%d\n", __func__,
+ digest_size);
+ return;
+ }
+
+ crypto_shash_export(hash, state);
+
+ for (i = 0; i < digest_size >> 2; i++)
+ out[i] = cpu_to_be32(result[i]);
+}
+
+static void sa_prepare_iopads(struct algo_data *data, const u8 *key,
+ u16 key_sz, u32 *ipad, u32 *opad)
+{
+ SHASH_DESC_ON_STACK(shash, data->ctx->shash);
+ int block_size = crypto_shash_blocksize(data->ctx->shash);
+ int digest_size = crypto_shash_digestsize(data->ctx->shash);
+ u8 k_ipad[SHA_MESSAGE_BYTES];
+ u8 k_opad[SHA_MESSAGE_BYTES];
+
+ shash->tfm = data->ctx->shash;
+
+ prepare_kiopad(k_ipad, k_opad, key, key_sz);
+
+ memzero_explicit(ipad, block_size);
+ memzero_explicit(opad, block_size);
+
+ crypto_shash_init(shash);
+ crypto_shash_update(shash, k_ipad, block_size);
+ sa_export_shash(shash, block_size, digest_size, ipad);
+
+ crypto_shash_init(shash);
+ crypto_shash_update(shash, k_opad, block_size);
+
+ sa_export_shash(shash, block_size, digest_size, opad);
+}
+
/* Derive the inverse key used in AES-CBC decryption operation */
static inline int sa_aes_inv_key(u8 *inv_key, const u8 *key, u16 key_sz)
{
@@ -380,14 +499,26 @@ static int sa_set_sc_enc(struct algo_data *ad, const u8 *key, u16 key_sz,
static void sa_set_sc_auth(struct algo_data *ad, const u8 *key, u16 key_sz,
u8 *sc_buf)
{
+ u32 ipad[64], opad[64];
+
/* Set Authentication mode selector to hash processing */
sc_buf[0] = SA_HASH_PROCESSING;
/* Auth SW ctrl word: bit[6]=1 (upload computed hash to TLR section) */
sc_buf[1] = SA_UPLOAD_HASH_TO_TLR;
sc_buf[1] |= ad->auth_ctrl;
- /* basic hash */
- sc_buf[1] |= SA_BASIC_HASH;
+ /* Copy the keys or ipad/opad */
+ if (ad->keyed_mac) {
+ ad->prep_iopad(ad, key, key_sz, ipad, opad);
+
+ /* Copy ipad to AuthKey */
+ memcpy(&sc_buf[32], ipad, ad->hash_size);
+ /* Copy opad to Aux-1 */
+ memcpy(&sc_buf[64], opad, ad->hash_size);
+ } else {
+ /* basic hash */
+ sc_buf[1] |= SA_BASIC_HASH;
+ }
}
static inline void sa_copy_iv(u32 *out, const u8 *iv, bool size16)
@@ -417,16 +548,18 @@ static int sa_format_cmdl_gen(struct sa_cmdl_cfg *cfg, u8 *cmdl,
/* Iniialize the command update structure */
memzero_explicit(upd_info, sizeof(*upd_info));
- if (cfg->enc_eng_id)
- total = SA_CMDL_HEADER_SIZE_BYTES;
-
- if (cfg->auth_eng_id)
- total = SA_CMDL_HEADER_SIZE_BYTES;
+ if (cfg->enc_eng_id && cfg->auth_eng_id) {
+ if (cfg->enc) {
+ auth_offset = SA_CMDL_HEADER_SIZE_BYTES;
+ enc_next_eng = cfg->auth_eng_id;
- if (cfg->iv_size)
- total += cfg->iv_size;
-
- enc_next_eng = SA_ENG_ID_OUTPORT2;
+ if (cfg->iv_size)
+ auth_offset += cfg->iv_size;
+ } else {
+ enc_offset = SA_CMDL_HEADER_SIZE_BYTES;
+ auth_next_eng = cfg->enc_eng_id;
+ }
+ }
if (cfg->enc_eng_id) {
upd_info->flags |= SA_CMDL_UPD_ENC;
@@ -447,11 +580,11 @@ static int sa_format_cmdl_gen(struct sa_cmdl_cfg *cfg, u8 *cmdl,
cmdl[enc_offset + SA_CMDL_OFFSET_OPTION_CTRL1] =
(SA_CTX_ENC_AUX2_OFFSET | (cfg->iv_size >> 3));
- enc_offset += SA_CMDL_HEADER_SIZE_BYTES + cfg->iv_size;
+ total += SA_CMDL_HEADER_SIZE_BYTES + cfg->iv_size;
} else {
cmdl[enc_offset + SA_CMDL_OFFSET_LABEL_LEN] =
SA_CMDL_HEADER_SIZE_BYTES;
- enc_offset += SA_CMDL_HEADER_SIZE_BYTES;
+ total += SA_CMDL_HEADER_SIZE_BYTES;
}
}
@@ -559,23 +692,28 @@ int sa_init_sc(struct sa_ctx_info *ctx, const u8 *enc_key,
int auth_sc_offset = 0;
u8 *sc_buf = ctx->sc;
u16 sc_id = ctx->sc_id;
- u8 first_engine;
+ u8 first_engine = 0;
memzero_explicit(sc_buf, SA_CTX_MAX_SZ);
- if (ad->enc_eng.eng_id) {
- enc_sc_offset = SA_CTX_PHP_PE_CTX_SZ;
- first_engine = ad->enc_eng.eng_id;
- sc_buf[1] = SA_SCCTL_FE_ENC;
- ad->hash_size = ad->iv_out_size;
- } else {
+ if (ad->auth_eng.eng_id) {
+ if (enc)
+ first_engine = ad->enc_eng.eng_id;
+ else
+ first_engine = ad->auth_eng.eng_id;
+
enc_sc_offset = SA_CTX_PHP_PE_CTX_SZ;
auth_sc_offset = enc_sc_offset + ad->enc_eng.sc_size;
- first_engine = ad->auth_eng.eng_id;
sc_buf[1] = SA_SCCTL_FE_AUTH_ENC;
if (!ad->hash_size)
return -EINVAL;
ad->hash_size = roundup(ad->hash_size, 8);
+
+ } else if (ad->enc_eng.eng_id && !ad->auth_eng.eng_id) {
+ enc_sc_offset = SA_CTX_PHP_PE_CTX_SZ;
+ first_engine = ad->enc_eng.eng_id;
+ sc_buf[1] = SA_SCCTL_FE_ENC;
+ ad->hash_size = ad->iv_out_size;
}
/* SCCTL Owner info: 0=host, 1=CP_ACE */
@@ -1530,6 +1668,305 @@ static void sa_sha_cra_exit(struct crypto_tfm *tfm)
crypto_free_ahash(ctx->fallback.ahash);
}
+static void sa_aead_dma_in_callback(void *data)
+{
+ struct sa_rx_data *rxd = (struct sa_rx_data *)data;
+ struct aead_request *req;
+ struct crypto_aead *tfm;
+ unsigned int start;
+ unsigned int authsize;
+ u8 auth_tag[SA_MAX_AUTH_TAG_SZ];
+ size_t pl, ml;
+ int i, sglen;
+ int err = 0;
+ u16 auth_len;
+ u32 *mdptr;
+ bool diff_dst;
+ enum dma_data_direction dir_src;
+
+ req = container_of(rxd->req, struct aead_request, base);
+ tfm = crypto_aead_reqtfm(req);
+ start = req->assoclen + req->cryptlen;
+ authsize = crypto_aead_authsize(tfm);
+
+ diff_dst = (req->src != req->dst) ? true : false;
+ dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
+
+ mdptr = (u32 *)dmaengine_desc_get_metadata_ptr(rxd->tx_in, &pl, &ml);
+ for (i = 0; i < (authsize / 4); i++)
+ mdptr[i + 4] = htonl(mdptr[i + 4]);
+
+ auth_len = req->assoclen + req->cryptlen;
+ if (!rxd->enc)
+ auth_len -= authsize;
+
+ sglen = sg_nents_for_len(rxd->src, auth_len);
+ dma_unmap_sg(rxd->ddev, rxd->src, sglen, dir_src);
+ kfree(rxd->split_src_sg);
+
+ if (diff_dst) {
+ sglen = sg_nents_for_len(rxd->dst, auth_len);
+ dma_unmap_sg(rxd->ddev, rxd->dst, sglen, DMA_FROM_DEVICE);
+ kfree(rxd->split_dst_sg);
+ }
+
+ if (rxd->enc) {
+ scatterwalk_map_and_copy(&mdptr[4], req->dst, start, authsize,
+ 1);
+ } else {
+ start -= authsize;
+ scatterwalk_map_and_copy(auth_tag, req->src, start, authsize,
+ 0);
+
+ err = memcmp(&mdptr[4], auth_tag, authsize) ? -EBADMSG : 0;
+ }
+
+ kfree(rxd);
+
+ aead_request_complete(req, err);
+}
+
+static int sa_cra_init_aead(struct crypto_aead *tfm, const char *hash,
+ const char *fallback)
+{
+ struct sa_tfm_ctx *ctx = crypto_aead_ctx(tfm);
+ struct sa_crypto_data *data = dev_get_drvdata(sa_k3_dev);
+ int ret;
+
+ memzero_explicit(ctx, sizeof(*ctx));
+
+ ctx->shash = crypto_alloc_shash(hash, 0, CRYPTO_ALG_NEED_FALLBACK);
+ if (IS_ERR(ctx->shash)) {
+ dev_err(sa_k3_dev, "base driver %s couldn't be loaded\n", hash);
+ return PTR_ERR(ctx->shash);
+ }
+
+ ctx->fallback.aead = crypto_alloc_aead(fallback, 0,
+ CRYPTO_ALG_NEED_FALLBACK);
+
+ if (IS_ERR(ctx->fallback.aead)) {
+ dev_err(sa_k3_dev, "fallback driver %s couldn't be loaded\n",
+ fallback);
+ return PTR_ERR(ctx->fallback.aead);
+ }
+
+ crypto_aead_set_reqsize(tfm, sizeof(struct aead_request) +
+ crypto_aead_reqsize(ctx->fallback.aead));
+
+ ret = sa_init_ctx_info(&ctx->enc, data);
+ if (ret)
+ return ret;
+
+ ret = sa_init_ctx_info(&ctx->dec, data);
+ if (ret) {
+ sa_free_ctx_info(&ctx->enc, data);
+ return ret;
+ }
+
+ dev_dbg(sa_k3_dev, "%s(0x%p) sc-ids(0x%x(0x%pad), 0x%x(0x%pad))\n",
+ __func__, tfm, ctx->enc.sc_id, &ctx->enc.sc_phys,
+ ctx->dec.sc_id, &ctx->dec.sc_phys);
+
+ return ret;
+}
+
+static int sa_cra_init_aead_sha1(struct crypto_aead *tfm)
+{
+ return sa_cra_init_aead(tfm, "sha1",
+ "authenc(hmac(sha1-ce),cbc(aes-ce))");
+}
+
+static int sa_cra_init_aead_sha256(struct crypto_aead *tfm)
+{
+ return sa_cra_init_aead(tfm, "sha256",
+ "authenc(hmac(sha256-ce),cbc(aes-ce))");
+}
+
+static void sa_exit_tfm_aead(struct crypto_aead *tfm)
+{
+ struct sa_tfm_ctx *ctx = crypto_aead_ctx(tfm);
+ struct sa_crypto_data *data = dev_get_drvdata(sa_k3_dev);
+
+ crypto_free_shash(ctx->shash);
+ crypto_free_aead(ctx->fallback.aead);
+
+ sa_free_ctx_info(&ctx->enc, data);
+ sa_free_ctx_info(&ctx->dec, data);
+}
+
+/* AEAD algorithm configuration interface function */
+static int sa_aead_setkey(struct crypto_aead *authenc,
+ const u8 *key, unsigned int keylen,
+ struct algo_data *ad)
+{
+ struct sa_tfm_ctx *ctx = crypto_aead_ctx(authenc);
+ struct crypto_authenc_keys keys;
+ int cmdl_len;
+ struct sa_cmdl_cfg cfg;
+ int key_idx;
+
+ if (crypto_authenc_extractkeys(&keys, key, keylen) != 0)
+ return -EINVAL;
+
+ /* Convert the key size (16/24/32) to the key size index (0/1/2) */
+ key_idx = (keys.enckeylen >> 3) - 2;
+ if (key_idx >= 3)
+ return -EINVAL;
+
+ ad->ctx = ctx;
+ ad->enc_eng.eng_id = SA_ENG_ID_EM1;
+ ad->enc_eng.sc_size = SA_CTX_ENC_TYPE1_SZ;
+ ad->auth_eng.eng_id = SA_ENG_ID_AM1;
+ ad->auth_eng.sc_size = SA_CTX_AUTH_TYPE2_SZ;
+ ad->mci_enc = mci_cbc_enc_no_iv_array[key_idx];
+ ad->mci_dec = mci_cbc_dec_no_iv_array[key_idx];
+ ad->inv_key = true;
+ ad->keyed_mac = true;
+ ad->ealg_id = SA_EALG_ID_AES_CBC;
+ ad->prep_iopad = sa_prepare_iopads;
+
+ memset(&cfg, 0, sizeof(cfg));
+ cfg.enc = true;
+ cfg.aalg = ad->aalg_id;
+ cfg.enc_eng_id = ad->enc_eng.eng_id;
+ cfg.auth_eng_id = ad->auth_eng.eng_id;
+ cfg.iv_size = crypto_aead_ivsize(authenc);
+ cfg.akey = keys.authkey;
+ cfg.akey_len = keys.authkeylen;
+
+ /* Setup Encryption Security Context & Command label template */
+ if (sa_init_sc(&ctx->enc, keys.enckey, keys.enckeylen,
+ keys.authkey, keys.authkeylen,
+ ad, 1, &ctx->enc.epib[1]))
+ return -EINVAL;
+
+ cmdl_len = sa_format_cmdl_gen(&cfg,
+ (u8 *)ctx->enc.cmdl,
+ &ctx->enc.cmdl_upd_info);
+ if (cmdl_len <= 0 || (cmdl_len > SA_MAX_CMDL_WORDS * sizeof(u32)))
+ return -EINVAL;
+
+ ctx->enc.cmdl_size = cmdl_len;
+
+ /* Setup Decryption Security Context & Command label template */
+ if (sa_init_sc(&ctx->dec, keys.enckey, keys.enckeylen,
+ keys.authkey, keys.authkeylen,
+ ad, 0, &ctx->dec.epib[1]))
+ return -EINVAL;
+
+ cfg.enc = false;
+ cmdl_len = sa_format_cmdl_gen(&cfg, (u8 *)ctx->dec.cmdl,
+ &ctx->dec.cmdl_upd_info);
+
+ if (cmdl_len <= 0 || (cmdl_len > SA_MAX_CMDL_WORDS * sizeof(u32)))
+ return -EINVAL;
+
+ ctx->dec.cmdl_size = cmdl_len;
+
+ crypto_aead_clear_flags(ctx->fallback.aead, CRYPTO_TFM_REQ_MASK);
+ crypto_aead_set_flags(ctx->fallback.aead,
+ crypto_aead_get_flags(authenc) &
+ CRYPTO_TFM_REQ_MASK);
+ crypto_aead_setkey(ctx->fallback.aead, key, keylen);
+
+ return 0;
+}
+
+static int sa_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
+{
+ struct sa_tfm_ctx *ctx = crypto_tfm_ctx(crypto_aead_tfm(tfm));
+
+ return crypto_aead_setauthsize(ctx->fallback.aead, authsize);
+}
+
+static int sa_aead_cbc_sha1_setkey(struct crypto_aead *authenc,
+ const u8 *key, unsigned int keylen)
+{
+ struct algo_data ad = { 0 };
+
+ ad.ealg_id = SA_EALG_ID_AES_CBC;
+ ad.aalg_id = SA_AALG_ID_HMAC_SHA1;
+ ad.hash_size = SHA1_DIGEST_SIZE;
+ ad.auth_ctrl = SA_AUTH_SW_CTRL_SHA1;
+
+ return sa_aead_setkey(authenc, key, keylen, &ad);
+}
+
+static int sa_aead_cbc_sha256_setkey(struct crypto_aead *authenc,
+ const u8 *key, unsigned int keylen)
+{
+ struct algo_data ad = { 0 };
+
+ ad.ealg_id = SA_EALG_ID_AES_CBC;
+ ad.aalg_id = SA_AALG_ID_HMAC_SHA2_256;
+ ad.hash_size = SHA256_DIGEST_SIZE;
+ ad.auth_ctrl = SA_AUTH_SW_CTRL_SHA256;
+
+ return sa_aead_setkey(authenc, key, keylen, &ad);
+}
+
+static int sa_aead_run(struct aead_request *req, u8 *iv, int enc)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct sa_tfm_ctx *ctx = crypto_aead_ctx(tfm);
+ struct sa_req sa_req = { 0 };
+ size_t auth_size, enc_size;
+
+ enc_size = req->cryptlen;
+ auth_size = req->assoclen + req->cryptlen;
+
+ if (!enc) {
+ enc_size -= crypto_aead_authsize(tfm);
+ auth_size -= crypto_aead_authsize(tfm);
+ }
+
+ if (auth_size > SA_MAX_DATA_SZ ||
+ (auth_size >= SA_UNSAFE_DATA_SZ_MIN &&
+ auth_size <= SA_UNSAFE_DATA_SZ_MAX)) {
+ struct aead_request *subreq = aead_request_ctx(req);
+ int ret;
+
+ aead_request_set_tfm(subreq, ctx->fallback.aead);
+ 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);
+
+ ret = enc ? crypto_aead_encrypt(subreq) :
+ crypto_aead_decrypt(subreq);
+ return ret;
+ }
+
+ sa_req.enc_offset = req->assoclen;
+ sa_req.enc_size = enc_size;
+ sa_req.auth_size = auth_size;
+ sa_req.size = auth_size;
+ sa_req.enc_iv = iv;
+ sa_req.type = CRYPTO_ALG_TYPE_AEAD;
+ sa_req.enc = enc;
+ sa_req.callback = sa_aead_dma_in_callback;
+ sa_req.mdata_size = 52;
+ sa_req.base = &req->base;
+ sa_req.ctx = ctx;
+ sa_req.src = req->src;
+ sa_req.dst = req->dst;
+
+ return sa_run(&sa_req);
+}
+
+/* AEAD algorithm encrypt interface function */
+static int sa_aead_encrypt(struct aead_request *req)
+{
+ return sa_aead_run(req, req->iv, 1);
+}
+
+/* AEAD algorithm decrypt interface function */
+static int sa_aead_decrypt(struct aead_request *req)
+{
+ return sa_aead_run(req, req->iv, 0);
+}
+
static struct sa_alg_tmpl sa_algs[] = {
{
.type = CRYPTO_ALG_TYPE_SKCIPHER,
@@ -1705,6 +2142,61 @@ static struct sa_alg_tmpl sa_algs[] = {
.import = sa_sha_import,
},
},
+ {
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .alg.aead = {
+ .base = {
+ .cra_name = "authenc(hmac(sha1),cbc(aes))",
+ .cra_driver_name =
+ "authenc(hmac(sha1),cbc(aes))-sa2ul",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_flags = CRYPTO_ALG_TYPE_AEAD |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_ctxsize = sizeof(struct sa_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_priority = 3000,
+ },
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+
+ .init = sa_cra_init_aead_sha1,
+ .exit = sa_exit_tfm_aead,
+ .setkey = sa_aead_cbc_sha1_setkey,
+ .setauthsize = sa_aead_setauthsize,
+ .encrypt = sa_aead_encrypt,
+ .decrypt = sa_aead_decrypt,
+ },
+ },
+ {
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .alg.aead = {
+ .base = {
+ .cra_name = "authenc(hmac(sha256),cbc(aes))",
+ .cra_driver_name =
+ "authenc(hmac(sha256),cbc(aes))-sa2ul",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_flags = CRYPTO_ALG_TYPE_AEAD |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_ctxsize = sizeof(struct sa_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_alignmask = 0,
+ .cra_priority = 3000,
+ },
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+
+ .init = sa_cra_init_aead_sha256,
+ .exit = sa_exit_tfm_aead,
+ .setkey = sa_aead_cbc_sha256_setkey,
+ .setauthsize = sa_aead_setauthsize,
+ .encrypt = sa_aead_encrypt,
+ .decrypt = sa_aead_decrypt,
+ },
+ },
};
/* Register the algorithms in crypto framework */
@@ -1722,6 +2214,9 @@ void sa_register_algos(const struct device *dev)
} else if (type == CRYPTO_ALG_TYPE_AHASH) {
alg_name = sa_algs[i].alg.ahash.halg.base.cra_name;
err = crypto_register_ahash(&sa_algs[i].alg.ahash);
+ } else if (type == CRYPTO_ALG_TYPE_AEAD) {
+ alg_name = sa_algs[i].alg.aead.base.cra_name;
+ err = crypto_register_aead(&sa_algs[i].alg.aead);
} else {
dev_err(dev,
"un-supported crypto algorithm (%d)",
@@ -1750,6 +2245,8 @@ void sa_unregister_algos(const struct device *dev)
crypto_unregister_skcipher(&sa_algs[i].alg.skcipher);
else if (type == CRYPTO_ALG_TYPE_AHASH)
crypto_unregister_ahash(&sa_algs[i].alg.ahash);
+ else if (type == CRYPTO_ALG_TYPE_AEAD)
+ crypto_unregister_aead(&sa_algs[i].alg.aead);
sa_algs[i].registered = false;
}
diff --git a/drivers/crypto/sa2ul.h b/drivers/crypto/sa2ul.h
index 733b00bc6e0f..952faad06ec6 100644
--- a/drivers/crypto/sa2ul.h
+++ b/drivers/crypto/sa2ul.h
@@ -313,6 +313,7 @@ struct sa_tfm_ctx {
union {
struct crypto_sync_skcipher *skcipher;
struct crypto_ahash *ahash;
+ struct crypto_aead *aead;
} fallback;
};
--
2.17.1
--
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