forked from Minki/linux
crypto: chcr - Avoid changing request structure
Do not update assoclen received in aead_request. Signed-off-by: Harsh Jain <harsh@chelsio.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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@ -126,13 +126,13 @@ static void chcr_verify_tag(struct aead_request *req, u8 *input, int *err)
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fw6_pld = (struct cpl_fw6_pld *)input;
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if ((get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) ||
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(get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_GCM)) {
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cmp = memcmp(&fw6_pld->data[2], (fw6_pld + 1), authsize);
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cmp = crypto_memneq(&fw6_pld->data[2], (fw6_pld + 1), authsize);
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} else {
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sg_pcopy_to_buffer(req->src, sg_nents(req->src), temp,
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authsize, req->assoclen +
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req->cryptlen - authsize);
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cmp = memcmp(temp, (fw6_pld + 1), authsize);
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cmp = crypto_memneq(temp, (fw6_pld + 1), authsize);
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}
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if (cmp)
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*err = -EBADMSG;
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@ -1840,9 +1840,8 @@ static struct sk_buff *create_gcm_wr(struct aead_request *req,
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struct scatterlist *src;
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unsigned int frags = 0, transhdr_len;
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unsigned int ivsize = AES_BLOCK_SIZE;
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unsigned int dst_size = 0, kctx_len;
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unsigned int dst_size = 0, kctx_len, assoclen = req->assoclen;
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unsigned char tag_offset = 0;
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unsigned int crypt_len = 0;
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unsigned int authsize = crypto_aead_authsize(tfm);
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int error = -EINVAL, src_nent;
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gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
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@ -1854,27 +1853,21 @@ static struct sk_buff *create_gcm_wr(struct aead_request *req,
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if (op_type && req->cryptlen < crypto_aead_authsize(tfm))
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goto err;
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src_nent = sg_nents_for_len(req->src, req->assoclen + req->cryptlen);
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src_nent = sg_nents_for_len(req->src, assoclen + req->cryptlen);
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if (src_nent < 0)
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goto err;
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src = scatterwalk_ffwd(reqctx->srcffwd, req->src, req->assoclen);
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src = scatterwalk_ffwd(reqctx->srcffwd, req->src, assoclen);
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reqctx->dst = src;
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if (req->src != req->dst) {
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error = chcr_copy_assoc(req, aeadctx);
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if (error)
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return ERR_PTR(error);
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reqctx->dst = scatterwalk_ffwd(reqctx->dstffwd, req->dst,
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req->assoclen);
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assoclen);
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}
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if (!req->cryptlen)
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/* null-payload is not supported in the hardware.
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* software is sending block size
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*/
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crypt_len = AES_BLOCK_SIZE;
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else
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crypt_len = req->cryptlen;
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reqctx->dst_nents = sg_nents_for_len(reqctx->dst, req->cryptlen +
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(op_type ? -authsize : authsize));
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if (reqctx->dst_nents < 0) {
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@ -1907,19 +1900,19 @@ static struct sk_buff *create_gcm_wr(struct aead_request *req,
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memset(chcr_req, 0, transhdr_len);
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if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106)
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req->assoclen -= 8;
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assoclen = req->assoclen - 8;
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tag_offset = (op_type == CHCR_ENCRYPT_OP) ? 0 : authsize;
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chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(
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ctx->dev->rx_channel_id, 2, (ivsize ?
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(req->assoclen + 1) : 0));
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(assoclen + 1) : 0));
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chcr_req->sec_cpl.pldlen =
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htonl(req->assoclen + ivsize + req->cryptlen);
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htonl(assoclen + ivsize + req->cryptlen);
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chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
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req->assoclen ? 1 : 0, req->assoclen,
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req->assoclen + ivsize + 1, 0);
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assoclen ? 1 : 0, assoclen,
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assoclen + ivsize + 1, 0);
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chcr_req->sec_cpl.cipherstop_lo_authinsert =
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FILL_SEC_CPL_AUTHINSERT(0, req->assoclen + ivsize + 1,
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FILL_SEC_CPL_AUTHINSERT(0, assoclen + ivsize + 1,
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tag_offset, tag_offset);
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chcr_req->sec_cpl.seqno_numivs =
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FILL_SEC_CPL_SCMD0_SEQNO(op_type, (op_type ==
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@ -1955,9 +1948,7 @@ static struct sk_buff *create_gcm_wr(struct aead_request *req,
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goto dstmap_fail;
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skb_set_transport_header(skb, transhdr_len);
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write_sg_to_skb(skb, &frags, req->src, req->assoclen);
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write_sg_to_skb(skb, &frags, req->src, assoclen);
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write_buffer_to_skb(skb, &frags, reqctx->iv, ivsize);
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write_sg_to_skb(skb, &frags, src, req->cryptlen);
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create_wreq(ctx, chcr_req, req, skb, kctx_len, size, 1,
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