From f146c7bc85a51f95c05e0f8173d484eb301ece78 Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Thu, 13 Aug 2026 18:52:04 +0200 Subject: PCI: Add pci_irq_type() to query the allocated interrupt type Add a helper that returns PCI_IRQ_MSIX, PCI_IRQ_MSI, or PCI_IRQ_INTX based on the interrupt type the PCI core selected after pci_alloc_irq_vectors(). Several drivers already open-code this check against pdev->msix_enabled and pdev->msi_enabled, or even open code this helper [1]. A common helper avoids the duplication and keeps drivers from accessing the bitfield directly (see also [2]). Acked-by: Bjorn Helgaas Tested-by: John Hubbard Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1] Inspired-by: John Hubbard Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2] Reviewed-by: Gary Guo Link: https://patch.msgid.link/20260813165234.620555-5-dakr@kernel.org [ Add missing pci_irq_type() stub for CONFIG_PCI=n. ] Signed-off-by: Danilo Krummrich --- include/crypto/sm4.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 include/crypto/sm4.h (limited to 'include/crypto/sm4.h') diff --git a/include/crypto/sm4.h b/include/crypto/sm4.h new file mode 100644 index 000000000..9656a9a40 --- /dev/null +++ b/include/crypto/sm4.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +/* + * Common values for the SM4 algorithm + * Copyright (C) 2018 ARM Limited or its affiliates. + * Copyright (c) 2021 Tianjia Zhang + */ + +#ifndef _CRYPTO_SM4_H +#define _CRYPTO_SM4_H + +#include +#include + +#define SM4_KEY_SIZE 16 +#define SM4_BLOCK_SIZE 16 +#define SM4_RKEY_WORDS 32 + +struct sm4_ctx { + u32 rkey_enc[SM4_RKEY_WORDS]; + u32 rkey_dec[SM4_RKEY_WORDS]; +}; + +extern const u32 crypto_sm4_fk[]; +extern const u32 crypto_sm4_ck[]; +extern const u8 crypto_sm4_sbox[]; + +/** + * sm4_expandkey - Expands the SM4 key as described in GB/T 32907-2016 + * @ctx: The location where the computed key will be stored. + * @in_key: The supplied key. + * @key_len: The length of the supplied key. + * + * Returns 0 on success. The function fails only if an invalid key size (or + * pointer) is supplied. + */ +int sm4_expandkey(struct sm4_ctx *ctx, const u8 *in_key, + unsigned int key_len); + +/** + * sm4_crypt_block - Encrypt or decrypt a single SM4 block + * @rk: The rkey_enc for encrypt or rkey_dec for decrypt + * @out: Buffer to store output data + * @in: Buffer containing the input data + */ +void sm4_crypt_block(const u32 *rk, u8 *out, const u8 *in); + +#endif -- cgit v1.3.1