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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /block/blk-crypto-internal.h
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'block/blk-crypto-internal.h')
-rw-r--r--block/blk-crypto-internal.h243
1 files changed, 243 insertions, 0 deletions
diff --git a/block/blk-crypto-internal.h b/block/blk-crypto-internal.h
new file mode 100644
index 000000000..2c7a04465
--- /dev/null
+++ b/block/blk-crypto-internal.h
@@ -0,0 +1,243 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2019 Google LLC
+ */
+
+#ifndef __LINUX_BLK_CRYPTO_INTERNAL_H
+#define __LINUX_BLK_CRYPTO_INTERNAL_H
+
+#include <linux/bio.h>
+#include <linux/blk-mq.h>
+
+/* Represents a crypto mode supported by blk-crypto */
+struct blk_crypto_mode {
+ const char *name; /* name of this mode, shown in sysfs */
+ const char *cipher_str; /* crypto API name (for fallback case) */
+ unsigned int keysize; /* key size in bytes */
+ unsigned int security_strength; /* security strength in bytes */
+ unsigned int ivsize; /* iv size in bytes */
+};
+
+extern const struct blk_crypto_mode blk_crypto_modes[];
+
+#ifdef CONFIG_BLK_INLINE_ENCRYPTION
+
+int blk_crypto_sysfs_register(struct gendisk *disk);
+
+void blk_crypto_sysfs_unregister(struct gendisk *disk);
+
+void bio_crypt_dun_increment(u64 dun[BLK_CRYPTO_DUN_ARRAY_SIZE],
+ unsigned int inc);
+
+bool bio_crypt_rq_ctx_compatible(struct request *rq, struct bio *bio);
+
+bool bio_crypt_ctx_mergeable(struct bio_crypt_ctx *bc1, unsigned int bc1_bytes,
+ struct bio_crypt_ctx *bc2);
+
+static inline bool bio_crypt_ctx_back_mergeable(struct request *req,
+ struct bio *bio)
+{
+ return bio_crypt_ctx_mergeable(req->crypt_ctx, blk_rq_bytes(req),
+ bio->bi_crypt_context);
+}
+
+static inline bool bio_crypt_ctx_front_mergeable(struct request *req,
+ struct bio *bio)
+{
+ return bio_crypt_ctx_mergeable(bio->bi_crypt_context,
+ bio->bi_iter.bi_size, req->crypt_ctx);
+}
+
+static inline bool bio_crypt_ctx_merge_rq(struct request *req,
+ struct request *next)
+{
+ return bio_crypt_ctx_mergeable(req->crypt_ctx, blk_rq_bytes(req),
+ next->crypt_ctx);
+}
+
+static inline void blk_crypto_rq_set_defaults(struct request *rq)
+{
+ rq->crypt_ctx = NULL;
+ rq->crypt_keyslot = NULL;
+}
+
+static inline bool blk_crypto_rq_is_encrypted(struct request *rq)
+{
+ return rq->crypt_ctx;
+}
+
+static inline bool blk_crypto_rq_has_keyslot(struct request *rq)
+{
+ return rq->crypt_keyslot;
+}
+
+blk_status_t blk_crypto_get_keyslot(struct blk_crypto_profile *profile,
+ const struct blk_crypto_key *key,
+ struct blk_crypto_keyslot **slot_ptr);
+
+void blk_crypto_put_keyslot(struct blk_crypto_keyslot *slot);
+
+int __blk_crypto_evict_key(struct blk_crypto_profile *profile,
+ const struct blk_crypto_key *key);
+
+int blk_crypto_ioctl(struct block_device *bdev, unsigned int cmd,
+ void __user *argp);
+
+static inline bool blk_crypto_supported(struct bio *bio)
+{
+ return blk_crypto_config_supported_natively(bio->bi_bdev,
+ &bio->bi_crypt_context->bc_key->crypto_cfg);
+}
+
+#else /* CONFIG_BLK_INLINE_ENCRYPTION */
+
+static inline int blk_crypto_sysfs_register(struct gendisk *disk)
+{
+ return 0;
+}
+
+static inline void blk_crypto_sysfs_unregister(struct gendisk *disk)
+{
+}
+
+static inline bool bio_crypt_rq_ctx_compatible(struct request *rq,
+ struct bio *bio)
+{
+ return true;
+}
+
+static inline bool bio_crypt_ctx_front_mergeable(struct request *req,
+ struct bio *bio)
+{
+ return true;
+}
+
+static inline bool bio_crypt_ctx_back_mergeable(struct request *req,
+ struct bio *bio)
+{
+ return true;
+}
+
+static inline bool bio_crypt_ctx_merge_rq(struct request *req,
+ struct request *next)
+{
+ return true;
+}
+
+static inline void blk_crypto_rq_set_defaults(struct request *rq) { }
+
+static inline bool blk_crypto_rq_is_encrypted(struct request *rq)
+{
+ return false;
+}
+
+static inline bool blk_crypto_rq_has_keyslot(struct request *rq)
+{
+ return false;
+}
+
+static inline int blk_crypto_ioctl(struct block_device *bdev, unsigned int cmd,
+ void __user *argp)
+{
+ return -ENOTTY;
+}
+
+static inline bool blk_crypto_supported(struct bio *bio)
+{
+ return false;
+}
+
+#endif /* CONFIG_BLK_INLINE_ENCRYPTION */
+
+void __bio_crypt_advance(struct bio *bio, unsigned int bytes);
+static inline void bio_crypt_advance(struct bio *bio, unsigned int bytes)
+{
+ if (bio_has_crypt_ctx(bio))
+ __bio_crypt_advance(bio, bytes);
+}
+
+void __bio_crypt_free_ctx(struct bio *bio);
+static inline void bio_crypt_free_ctx(struct bio *bio)
+{
+ if (bio_has_crypt_ctx(bio))
+ __bio_crypt_free_ctx(bio);
+}
+
+static inline void bio_crypt_do_front_merge(struct request *rq,
+ struct bio *bio)
+{
+#ifdef CONFIG_BLK_INLINE_ENCRYPTION
+ if (bio_has_crypt_ctx(bio))
+ memcpy(rq->crypt_ctx->bc_dun, bio->bi_crypt_context->bc_dun,
+ sizeof(rq->crypt_ctx->bc_dun));
+#endif
+}
+
+blk_status_t __blk_crypto_rq_get_keyslot(struct request *rq);
+static inline blk_status_t blk_crypto_rq_get_keyslot(struct request *rq)
+{
+ if (blk_crypto_rq_is_encrypted(rq))
+ return __blk_crypto_rq_get_keyslot(rq);
+ return BLK_STS_OK;
+}
+
+void __blk_crypto_rq_put_keyslot(struct request *rq);
+static inline void blk_crypto_rq_put_keyslot(struct request *rq)
+{
+ if (blk_crypto_rq_has_keyslot(rq))
+ __blk_crypto_rq_put_keyslot(rq);
+}
+
+void __blk_crypto_free_request(struct request *rq);
+static inline void blk_crypto_free_request(struct request *rq)
+{
+ if (blk_crypto_rq_is_encrypted(rq))
+ __blk_crypto_free_request(rq);
+}
+
+int __blk_crypto_rq_bio_prep(struct request *rq, struct bio *bio,
+ gfp_t gfp_mask);
+/**
+ * blk_crypto_rq_bio_prep - Prepare a request's crypt_ctx when its first bio
+ * is inserted
+ * @rq: The request to prepare
+ * @bio: The first bio being inserted into the request
+ * @gfp_mask: Memory allocation flags
+ *
+ * Return: 0 on success, -ENOMEM if out of memory. -ENOMEM is only possible if
+ * @gfp_mask doesn't include %__GFP_DIRECT_RECLAIM.
+ */
+static inline int blk_crypto_rq_bio_prep(struct request *rq, struct bio *bio,
+ gfp_t gfp_mask)
+{
+ if (bio_has_crypt_ctx(bio))
+ return __blk_crypto_rq_bio_prep(rq, bio, gfp_mask);
+ return 0;
+}
+
+bool blk_crypto_fallback_bio_prep(struct bio *bio);
+
+#ifdef CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK
+
+int blk_crypto_fallback_start_using_mode(enum blk_crypto_mode_num mode_num);
+
+int blk_crypto_fallback_evict_key(const struct blk_crypto_key *key);
+
+#else /* CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK */
+
+static inline int
+blk_crypto_fallback_start_using_mode(enum blk_crypto_mode_num mode_num)
+{
+ pr_warn_once("crypto API fallback is disabled\n");
+ return -ENOPKG;
+}
+
+static inline int
+blk_crypto_fallback_evict_key(const struct blk_crypto_key *key)
+{
+ return 0;
+}
+
+#endif /* CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK */
+
+#endif /* __LINUX_BLK_CRYPTO_INTERNAL_H */