diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/blk-crypto.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/blk-crypto.h b/include/linux/blk-crypto.h index eb80df19be68..f7c3cb4a342f 100644 --- a/include/linux/blk-crypto.h +++ b/include/linux/blk-crypto.h @@ -181,6 +181,28 @@ static inline struct bio_crypt_ctx *bio_crypt_ctx(struct bio *bio) #endif /* CONFIG_BLK_INLINE_ENCRYPTION */ +bool __blk_crypto_submit_bio(struct bio *bio); + +/** + * blk_crypto_submit_bio - Submit a bio that may have a crypto context + * @bio: bio to submit + * + * If @bio has no crypto context, or the crypt context attached to @bio is + * supported by the underlying device's inline encryption hardware, just submit + * @bio. + * + * Otherwise, try to perform en/decryption for this bio by falling back to the + * kernel crypto API. For encryption this means submitting newly allocated + * bios for the encrypted payload while keeping back the source bio until they + * complete, while for reads the decryption happens in-place by a hooked in + * completion handler. + */ +static inline void blk_crypto_submit_bio(struct bio *bio) +{ + if (!bio_has_crypt_ctx(bio) || __blk_crypto_submit_bio(bio)) + submit_bio(bio); +} + int __bio_crypt_clone(struct bio *dst, struct bio *src, gfp_t gfp_mask); /** * bio_crypt_clone - clone bio encryption context |