/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2012-2018 ARM Limited or its affiliates. */ /* \file cc_aead.h * ARM CryptoCell AEAD Crypto API */ #ifndef __CC_AEAD_H__ #define __CC_AEAD_H__ #include <linux/kernel.h> #include <crypto/algapi.h> #include <crypto/ctr.h> /* mac_cmp - HW writes 8 B but all bytes hold the same value */ #define ICV_CMP_SIZE 8 #define CCM_CONFIG_BUF_SIZE (AES_BLOCK_SIZE * 3) #define MAX_MAC_SIZE SHA256_DIGEST_SIZE /* defines for AES GCM configuration buffer */ #define GCM_BLOCK_LEN_SIZE 8 #define GCM_BLOCK_RFC4_IV_OFFSET 4 #define GCM_BLOCK_RFC4_IV_SIZE 8 /* IV size for rfc's */ #define GCM_BLOCK_RFC4_NONCE_OFFSET 0 #define GCM_BLOCK_RFC4_NONCE_SIZE 4 /* Offsets into AES CCM configuration buffer */ #define CCM_B0_OFFSET 0 #define CCM_A0_OFFSET 16 #define CCM_CTR_COUNT_0_OFFSET 32 /* CCM B0 and CTR_COUNT constants. */ #define CCM_BLOCK_NONCE_OFFSET 1 /* Nonce offset inside B0 and CTR_COUNT */ #define CCM_BLOCK_NONCE_SIZE 3 /* Nonce size inside B0 and CTR_COUNT */ #define CCM_BLOCK_IV_OFFSET 4 /* IV offset inside B0 and CTR_COUNT */ #define CCM_BLOCK_IV_SIZE 8 /* IV size inside B0 and CTR_COUNT */ enum aead_ccm_header_size { ccm_header_size_null = -1, ccm_header_size_zero = 0, ccm_header_size_2 = 2, ccm_header_size_6 = 6, ccm_header_size_max = S32_MAX }; struct aead_req_ctx { /* Allocate cache line although only 4 bytes are needed to * assure next field falls @ cache line * Used for both: digest HW compare and CCM/GCM MAC value */ u8 mac_buf[MAX_MAC_SIZE] ____cacheline_aligned; u8 ctr_iv[AES_BLOCK_SIZE] ____cacheline_aligned; //used in gcm u8 gcm_iv_inc1[AES_BLOCK_SIZE] ____cacheline_aligned; u8 gcm_iv_inc2[AES_BLOCK_SIZE] ____cacheline_aligned; u8 hkey[AES_BLOCK_SIZE] ____cacheline_aligned; struct { u8 len_a[GCM_BLOCK_LEN_SIZE] ____cacheline_aligned; u8 len_c[GCM_BLOCK_LEN_SIZE]; } gcm_len_block; u8 ccm_config[CCM_CONFIG_BUF_SIZE] ____cacheline_aligned; /* HW actual size input */ unsigned int hw_iv_size ____cacheline_aligned; /* used to prevent cache coherence problem */ u8 backup_mac[MAX_MAC_SIZE]; u8 *backup_iv; /*store iv for generated IV flow*/ u8 *backup_giv; /*store iv for rfc3686(ctr) flow*/ dma_addr_t mac_buf_dma_addr; /* internal ICV DMA buffer */ /* buffer for internal ccm configurations */ dma_addr_t ccm_iv0_dma_addr; dma_addr_t icv_dma_addr; /* Phys. address of ICV */ //used in gcm /* buffer for internal gcm configurations */ dma_addr_t gcm_iv_inc1_dma_addr; /* buffer for internal gcm configurations */ dma_addr_t gcm_iv_inc2_dma_addr; dma_addr_t hkey_dma_addr; /* Phys. address of hkey */ dma_addr_t gcm_block_len_dma_addr; /* Phys. address of gcm block len */ bool is_gcm4543; u8 *icv_virt_addr; /* Virt. address of ICV */ struct async_gen_req_ctx gen_ctx; struct cc_mlli assoc; struct cc_mlli src; struct cc_mlli dst; struct scatterlist *src_sgl; struct scatterlist *dst_sgl; unsigned int src_offset; unsigned int dst_offset; enum cc_req_dma_buf_type assoc_buff_type; enum cc_req_dma_buf_type data_buff_type; struct mlli_params mlli_params; unsigned int cryptlen; struct scatterlist ccm_adata_sg; enum aead_ccm_header_size ccm_hdr_size; unsigned int req_authsize; enum drv_cipher_mode cipher_mode; bool is_icv_fragmented; bool is_single_pass; bool plaintext_authenticate_only; //for gcm_rfc4543 }; int cc_aead_alloc(struct cc_drvdata *drvdata); int cc_aead_free(struct cc_drvdata *drvdata); #endif /*__CC_AEAD_H__*/Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Gilad Ben-Yossef | 335 | 99.70% | 11 | 91.67% |
| Derek Robson | 1 | 0.30% | 1 | 8.33% |
| Total | 336 | 100.00% | 12 | 100.00% |