Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * AMD Cryptographic Coprocessor (CCP) AES GCM crypto API support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2016,2017 Advanced Micro Devices, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Author: Gary R Hook <gary.hook@amd.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/scatterlist.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/crypto.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <crypto/internal/aead.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <crypto/algapi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <crypto/aes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <crypto/ctr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <crypto/gcm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <crypto/scatterwalk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include "ccp-crypto.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) static int ccp_aes_gcm_complete(struct crypto_async_request *async_req, int ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static int ccp_aes_gcm_setkey(struct crypto_aead *tfm, const u8 *key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 			      unsigned int key_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	struct ccp_ctx *ctx = crypto_aead_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	switch (key_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	case AES_KEYSIZE_128:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 		ctx->u.aes.type = CCP_AES_TYPE_128;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	case AES_KEYSIZE_192:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 		ctx->u.aes.type = CCP_AES_TYPE_192;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	case AES_KEYSIZE_256:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		ctx->u.aes.type = CCP_AES_TYPE_256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	ctx->u.aes.mode = CCP_AES_MODE_GCM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	ctx->u.aes.key_len = key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	memcpy(ctx->u.aes.key, key, key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	sg_init_one(&ctx->u.aes.key_sg, ctx->u.aes.key, key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) static int ccp_aes_gcm_setauthsize(struct crypto_aead *tfm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 				   unsigned int authsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	switch (authsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	case 16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	case 15:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	case 14:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	case 13:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	case 12:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	case 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) static int ccp_aes_gcm_crypt(struct aead_request *req, bool encrypt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	struct crypto_aead *tfm = crypto_aead_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	struct ccp_ctx *ctx = crypto_aead_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	struct ccp_aes_req_ctx *rctx = aead_request_ctx(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	struct scatterlist *iv_sg = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	unsigned int iv_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	if (!ctx->u.aes.key_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	if (ctx->u.aes.mode != CCP_AES_MODE_GCM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	if (!req->iv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	 * 5 parts:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	 *   plaintext/ciphertext input
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	 *   AAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	 *   key
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	 *   IV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	 *   Destination+tag buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	/* Prepare the IV: 12 bytes + an integer (counter) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	memcpy(rctx->iv, req->iv, GCM_AES_IV_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	for (i = 0; i < 3; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		rctx->iv[i + GCM_AES_IV_SIZE] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	rctx->iv[AES_BLOCK_SIZE - 1] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	/* Set up a scatterlist for the IV */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	iv_sg = &rctx->iv_sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	iv_len = AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	sg_init_one(iv_sg, rctx->iv, iv_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	/* The AAD + plaintext are concatenated in the src buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	memset(&rctx->cmd, 0, sizeof(rctx->cmd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	INIT_LIST_HEAD(&rctx->cmd.entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	rctx->cmd.engine = CCP_ENGINE_AES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	rctx->cmd.u.aes.authsize = crypto_aead_authsize(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	rctx->cmd.u.aes.type = ctx->u.aes.type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	rctx->cmd.u.aes.mode = ctx->u.aes.mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	rctx->cmd.u.aes.action = encrypt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	rctx->cmd.u.aes.key = &ctx->u.aes.key_sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	rctx->cmd.u.aes.key_len = ctx->u.aes.key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	rctx->cmd.u.aes.iv = iv_sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	rctx->cmd.u.aes.iv_len = iv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	rctx->cmd.u.aes.src = req->src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	rctx->cmd.u.aes.src_len = req->cryptlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	rctx->cmd.u.aes.aad_len = req->assoclen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	/* The cipher text + the tag are in the dst buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	rctx->cmd.u.aes.dst = req->dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	ret = ccp_crypto_enqueue_request(&req->base, &rctx->cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static int ccp_aes_gcm_encrypt(struct aead_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	return ccp_aes_gcm_crypt(req, CCP_AES_ACTION_ENCRYPT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static int ccp_aes_gcm_decrypt(struct aead_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	return ccp_aes_gcm_crypt(req, CCP_AES_ACTION_DECRYPT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static int ccp_aes_gcm_cra_init(struct crypto_aead *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	struct ccp_ctx *ctx = crypto_aead_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	ctx->complete = ccp_aes_gcm_complete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	ctx->u.aes.key_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	crypto_aead_set_reqsize(tfm, sizeof(struct ccp_aes_req_ctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static void ccp_aes_gcm_cra_exit(struct crypto_tfm *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static struct aead_alg ccp_aes_gcm_defaults = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	.setkey = ccp_aes_gcm_setkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	.setauthsize = ccp_aes_gcm_setauthsize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	.encrypt = ccp_aes_gcm_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	.decrypt = ccp_aes_gcm_decrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	.init = ccp_aes_gcm_cra_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	.ivsize = GCM_AES_IV_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	.maxauthsize = AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	.base = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		.cra_flags	= CRYPTO_ALG_ASYNC |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 				  CRYPTO_ALG_ALLOCATES_MEMORY |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 				  CRYPTO_ALG_KERN_DRIVER_ONLY |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 				  CRYPTO_ALG_NEED_FALLBACK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		.cra_blocksize	= AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		.cra_ctxsize	= sizeof(struct ccp_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		.cra_priority	= CCP_CRA_PRIORITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		.cra_exit	= ccp_aes_gcm_cra_exit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		.cra_module	= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct ccp_aes_aead_def {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	enum ccp_aes_mode mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	unsigned int version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	const char *driver_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	unsigned int blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	unsigned int ivsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	struct aead_alg *alg_defaults;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) static struct ccp_aes_aead_def aes_aead_algs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		.mode		= CCP_AES_MODE_GHASH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		.version	= CCP_VERSION(5, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		.name		= "gcm(aes)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		.driver_name	= "gcm-aes-ccp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		.blocksize	= 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		.ivsize		= AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		.alg_defaults	= &ccp_aes_gcm_defaults,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static int ccp_register_aes_aead(struct list_head *head,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 				 const struct ccp_aes_aead_def *def)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	struct ccp_crypto_aead *ccp_aead;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	struct aead_alg *alg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	ccp_aead = kzalloc(sizeof(*ccp_aead), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	if (!ccp_aead)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	INIT_LIST_HEAD(&ccp_aead->entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	ccp_aead->mode = def->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	/* Copy the defaults and override as necessary */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	alg = &ccp_aead->alg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	*alg = *def->alg_defaults;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		 def->driver_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	alg->base.cra_blocksize = def->blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	ret = crypto_register_aead(alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		pr_err("%s aead algorithm registration error (%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		       alg->base.cra_name, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		kfree(ccp_aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	list_add(&ccp_aead->entry, head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) int ccp_register_aes_aeads(struct list_head *head)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	unsigned int ccpversion = ccp_version();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	for (i = 0; i < ARRAY_SIZE(aes_aead_algs); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		if (aes_aead_algs[i].version > ccpversion)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		ret = ccp_register_aes_aead(head, &aes_aead_algs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }