Add hash operation callbacks to bpf_crypto_type structure: - hash(): Performs hashing operation on input data - digestsize(): Returns the output size for the hash algorithm

These additions enable BPF programs to use cryptographic hash functions through the unified bpf_crypto_type interface, supporting use cases such as content verification, integrity checking, and data authentication.

Signed-off-by: Daniel Hodges git@danielhodges.dev --- include/linux/bpf_crypto.h | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/include/linux/bpf_crypto.h b/include/linux/bpf_crypto.h index a41e71d4e2d9..c84371cc4e47 100644 --- a/include/linux/bpf_crypto.h +++ b/include/linux/bpf_crypto.h @@ -11,8 +11,10 @@ struct bpf_crypto_type { int (*setauthsize)(void *tfm, unsigned int authsize); int (*encrypt)(void *tfm, const u8 *src, u8 *dst, unsigned int len, u8 *iv); int (*decrypt)(void *tfm, const u8 *src, u8 *dst, unsigned int len, u8 *iv); + int (*hash)(void *tfm, const u8 *data, u8 *out, unsigned int len); unsigned int (*ivsize)(void *tfm); unsigned int (*statesize)(void *tfm); + unsigned int (*digestsize)(void *tfm); u32 (*get_flags)(void *tfm); struct module *owner; char name[14];