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 --- crypto/xxhash_generic.c | 106 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 crypto/xxhash_generic.c (limited to 'crypto/xxhash_generic.c') diff --git a/crypto/xxhash_generic.c b/crypto/xxhash_generic.c new file mode 100644 index 000000000..175bb7ae0 --- /dev/null +++ b/crypto/xxhash_generic.c @@ -0,0 +1,106 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include +#include +#include + +#define XXHASH64_BLOCK_SIZE 32 +#define XXHASH64_DIGEST_SIZE 8 + +struct xxhash64_tfm_ctx { + u64 seed; +}; + +struct xxhash64_desc_ctx { + struct xxh64_state xxhstate; +}; + +static int xxhash64_setkey(struct crypto_shash *tfm, const u8 *key, + unsigned int keylen) +{ + struct xxhash64_tfm_ctx *tctx = crypto_shash_ctx(tfm); + + if (keylen != sizeof(tctx->seed)) + return -EINVAL; + tctx->seed = get_unaligned_le64(key); + return 0; +} + +static int xxhash64_init(struct shash_desc *desc) +{ + struct xxhash64_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm); + struct xxhash64_desc_ctx *dctx = shash_desc_ctx(desc); + + xxh64_reset(&dctx->xxhstate, tctx->seed); + + return 0; +} + +static int xxhash64_update(struct shash_desc *desc, const u8 *data, + unsigned int length) +{ + struct xxhash64_desc_ctx *dctx = shash_desc_ctx(desc); + + xxh64_update(&dctx->xxhstate, data, length); + + return 0; +} + +static int xxhash64_final(struct shash_desc *desc, u8 *out) +{ + struct xxhash64_desc_ctx *dctx = shash_desc_ctx(desc); + + put_unaligned_le64(xxh64_digest(&dctx->xxhstate), out); + + return 0; +} + +static int xxhash64_digest(struct shash_desc *desc, const u8 *data, + unsigned int length, u8 *out) +{ + struct xxhash64_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm); + + put_unaligned_le64(xxh64(data, length, tctx->seed), out); + + return 0; +} + +static struct shash_alg alg = { + .digestsize = XXHASH64_DIGEST_SIZE, + .setkey = xxhash64_setkey, + .init = xxhash64_init, + .update = xxhash64_update, + .final = xxhash64_final, + .digest = xxhash64_digest, + .descsize = sizeof(struct xxhash64_desc_ctx), + .base = { + .cra_name = "xxhash64", + .cra_driver_name = "xxhash64-generic", + .cra_priority = 100, + .cra_flags = CRYPTO_ALG_OPTIONAL_KEY, + .cra_blocksize = XXHASH64_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct xxhash64_tfm_ctx), + .cra_module = THIS_MODULE, + } +}; + +static int __init xxhash_mod_init(void) +{ + return crypto_register_shash(&alg); +} + +static void __exit xxhash_mod_fini(void) +{ + crypto_unregister_shash(&alg); +} + +module_init(xxhash_mod_init); +module_exit(xxhash_mod_fini); + +MODULE_AUTHOR("Nikolay Borisov "); +MODULE_DESCRIPTION("xxhash calculations wrapper for lib/xxhash.c"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS_CRYPTO("xxhash64"); +MODULE_ALIAS_CRYPTO("xxhash64-generic"); -- cgit v1.3.1