crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes

Update the ARMv8 Crypto Extensions and the plain NEON AES implementations
in CBC and CTR modes to return the next IV back to the skcipher API client.
This is necessary for chaining to work correctly.

Note that for CTR, this is only done if the request is a round multiple of
the block size, since otherwise, chaining is impossible anyway.

Cc: <stable@vger.kernel.org> # v3.16+
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

path: root/net/mac80211/fils_aead.h

/*
 * FILS AEAD for (Re)Association Request/Response frames
 * Copyright 2016, Qualcomm Atheros, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef FILS_AEAD_H
#define FILS_AEAD_H

int fils_encrypt_assoc_req(struct sk_buff *skb,
			   struct ieee80211_mgd_assoc_data *assoc_data);
int fils_decrypt_assoc_resp(struct ieee80211_sub_if_data *sdata,
			    u8 *frame, size_t *frame_len,
			    struct ieee80211_mgd_assoc_data *assoc_data);

#endif /* FILS_AEAD_H */