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Commit 5f49f18d authored by Lionel Debieve's avatar Lionel Debieve Committed by Herbert Xu
Browse files

crypto: stm32/cryp - update to return iv_out 



The kernel crypto API request output the next IV data to
IV buffer for CBC implementation.

Signed-off-by: default avatarLionel Debieve <lionel.debieve@st.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 29aed438

drivers/crypto/stm32/stm32-cryp.c

+20 −0
Original line number Diff line number Diff line
@@ -393,6 +393,23 @@ static void stm32_cryp_hw_write_iv(struct stm32_cryp *cryp, u32 *iv) 
	}

}



static void stm32_cryp_get_iv(struct stm32_cryp *cryp)

{

	struct ablkcipher_request *req = cryp->req;

	u32 *tmp = req->info;



	if (!tmp)

		return;



	*tmp++ = cpu_to_be32(stm32_cryp_read(cryp, CRYP_IV0LR));

	*tmp++ = cpu_to_be32(stm32_cryp_read(cryp, CRYP_IV0RR));



	if (is_aes(cryp)) {

		*tmp++ = cpu_to_be32(stm32_cryp_read(cryp, CRYP_IV1LR));

		*tmp++ = cpu_to_be32(stm32_cryp_read(cryp, CRYP_IV1RR));

	}

}



static void stm32_cryp_hw_write_key(struct stm32_cryp *c)

{

	unsigned int i;
@@ -622,6 +639,9 @@ static void stm32_cryp_finish_req(struct stm32_cryp *cryp, int err) 
		/* Phase 4 : output tag */

		err = stm32_cryp_read_auth_tag(cryp);



	if (!err && (!(is_gcm(cryp) || is_ccm(cryp))))

		stm32_cryp_get_iv(cryp);



	if (cryp->sgs_copied) {

		void *buf_in, *buf_out;

		int pages, len;