blk-crypto: don't use struct request_queue for public interfaces

Switch all public blk-crypto interfaces to use struct block_device
arguments to specify the device they operate on instead of th
request_queue, which is a block layer implementation detail.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20221114042944.1009870-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 14 insertions, 10 deletions

diff --git a/block/blk-crypto.c b/block/blk-crypto.c
index a496aaef85ba..0047436b6337 100644
--- a/block/blk-crypto.c
+++ b/block/blk-crypto.c
@@ -354,20 +354,21 @@ int blk_crypto_init_key(struct blk_crypto_key *blk_key, const u8 *raw_key,
 
 /*
  * Check if bios with @cfg can be en/decrypted by blk-crypto (i.e. either the
- * request queue it's submitted to supports inline crypto, or the
+ * block_device it's submitted to supports inline crypto, or the
  * blk-crypto-fallback is enabled and supports the cfg).
  */
-bool blk_crypto_config_supported(struct request_queue *q,
+bool blk_crypto_config_supported(struct block_device *bdev,
 				 const struct blk_crypto_config *cfg)
 {
 	return IS_ENABLED(CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK) ||
-	       __blk_crypto_cfg_supported(q->crypto_profile, cfg);
+	       __blk_crypto_cfg_supported(bdev_get_queue(bdev)->crypto_profile,
+					  cfg);
 }
 
 /**
  * blk_crypto_start_using_key() - Start using a blk_crypto_key on a device
+ * @bdev: block device to operate on
  * @key: A key to use on the device
- * @q: the request queue for the device
  *
  * Upper layers must call this function to ensure that either the hardware
  * supports the key's crypto settings, or the crypto API fallback has transforms
@@ -379,10 +380,11 @@ bool blk_crypto_config_supported(struct request_queue *q,
  *	   blk-crypto-fallback is either disabled or the needed algorithm
  *	   is disabled in the crypto API; or another -errno code.
  */
-int blk_crypto_start_using_key(const struct blk_crypto_key *key,
-			       struct request_queue *q)
+int blk_crypto_start_using_key(struct block_device *bdev,
+			       const struct blk_crypto_key *key)
 {
-	if (__blk_crypto_cfg_supported(q->crypto_profile, &key->crypto_cfg))
+	if (__blk_crypto_cfg_supported(bdev_get_queue(bdev)->crypto_profile,
+			&key->crypto_cfg))
 		return 0;
 	return blk_crypto_fallback_start_using_mode(key->crypto_cfg.crypto_mode);
 }
@@ -390,7 +392,7 @@ int blk_crypto_start_using_key(const struct blk_crypto_key *key,
 /**
  * blk_crypto_evict_key() - Evict a key from any inline encryption hardware
  *			    it may have been programmed into
- * @q: The request queue who's associated inline encryption hardware this key
+ * @bdev: The block_device who's associated inline encryption hardware this key
  *     might have been programmed into
  * @key: The key to evict
  *
@@ -400,14 +402,16 @@ int blk_crypto_start_using_key(const struct blk_crypto_key *key,
  *
  * Return: 0 on success or if the key wasn't in any keyslot; -errno on error.
  */
-int blk_crypto_evict_key(struct request_queue *q,
+int blk_crypto_evict_key(struct block_device *bdev,
 			 const struct blk_crypto_key *key)
 {
+	struct request_queue *q = bdev_get_queue(bdev);
+
 	if (__blk_crypto_cfg_supported(q->crypto_profile, &key->crypto_cfg))
 		return __blk_crypto_evict_key(q->crypto_profile, key);
 
 	/*
-	 * If the request_queue didn't support the key, then blk-crypto-fallback
+	 * If the block_device didn't support the key, then blk-crypto-fallback
 	 * may have been used, so try to evict the key from blk-crypto-fallback.
 	 */
 	return blk_crypto_fallback_evict_key(key);