Commit 1f479e4c authored by Harsh Jain's avatar Harsh Jain Committed by Herbert Xu
Browse files

crypto: chelsio - Swap location of AAD and IV sent in WR 



Send input as IV | AAD | Data. It will allow sending IV as Immediate
Data and Creates space in Work request to add more dma mapped entries.

Signed-off-by: default avatarHarsh Jain <harsh@chelsio.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 3cc04c16

drivers/crypto/chelsio/chcr_algo.c

+100 −112
Original line number Diff line number Diff line
@@ -2215,10 +2215,7 @@ static int chcr_aead_common_init(struct aead_request *req) 
		error = -ENOMEM;

		goto err;

	}

	reqctx->aad_nents = sg_nents_xlen(req->src, req->assoclen,

					  CHCR_SRC_SG_SIZE, 0);

	reqctx->src_nents = sg_nents_xlen(req->src, req->cryptlen,

					  CHCR_SRC_SG_SIZE, req->assoclen);



	return 0;

err:

	return error;
@@ -2268,10 +2265,10 @@ static struct sk_buff *create_authenc_wr(struct aead_request *req, 
	struct ulptx_sgl *ulptx;

	unsigned int transhdr_len;

	unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm);

	unsigned int   kctx_len = 0, dnents;

	unsigned int  assoclen = req->assoclen;

	unsigned int   kctx_len = 0, dnents, snents;

	unsigned int  authsize = crypto_aead_authsize(tfm);

	int error = -EINVAL;

	u8 *ivptr;

	int null = 0;

	gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :

		GFP_ATOMIC;
@@ -2288,24 +2285,20 @@ static struct sk_buff *create_authenc_wr(struct aead_request *req, 
	if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL ||

		subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {

		null = 1;

		assoclen = 0;

		reqctx->aad_nents = 0;

	}

	dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);

	dnents += sg_nents_xlen(req->dst, req->cryptlen +

		(reqctx->op ? -authsize : authsize), CHCR_DST_SG_SIZE,

		req->assoclen);

	dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen +

		(reqctx->op ? -authsize : authsize), CHCR_DST_SG_SIZE, 0);

	dnents += MIN_AUTH_SG; // For IV



	snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,

			       CHCR_SRC_SG_SIZE, 0);

	dst_size = get_space_for_phys_dsgl(dnents);

	kctx_len = (ntohl(KEY_CONTEXT_CTX_LEN_V(aeadctx->key_ctx_hdr)) << 4)

		- sizeof(chcr_req->key_ctx);

	transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);

	reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <

	reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) <

			SGE_MAX_WR_LEN;

	temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16)

			: (sgl_len(reqctx->src_nents + reqctx->aad_nents

			+ MIN_GCM_SG) * 8);

	temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16)

			: (sgl_len(snents) * 8);

	transhdr_len += temp;

	transhdr_len = roundup(transhdr_len, 16);
@@ -2315,7 +2308,7 @@ static struct sk_buff *create_authenc_wr(struct aead_request *req, 
		chcr_aead_common_exit(req);

		return ERR_PTR(chcr_aead_fallback(req, reqctx->op));

	}

	skb = alloc_skb(SGE_MAX_WR_LEN, flags);

	skb = alloc_skb(transhdr_len, flags);

	if (!skb) {

		error = -ENOMEM;

		goto err;
@@ -2331,16 +2324,16 @@ static struct sk_buff *create_authenc_wr(struct aead_request *req, 
	 * to the hardware spec

	 */

	chcr_req->sec_cpl.op_ivinsrtofst =

		FILL_SEC_CPL_OP_IVINSR(a_ctx(tfm)->dev->rx_channel_id, 2,

				       assoclen + 1);

	chcr_req->sec_cpl.pldlen = htonl(assoclen + IV + req->cryptlen);

		FILL_SEC_CPL_OP_IVINSR(a_ctx(tfm)->dev->rx_channel_id, 2, 1);

	chcr_req->sec_cpl.pldlen = htonl(req->assoclen + IV + req->cryptlen);

	chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(

					assoclen ? 1 : 0, assoclen,

					assoclen + IV + 1,

					null ? 0 : 1 + IV,

					null ? 0 : IV + req->assoclen,

					req->assoclen + IV + 1,

					(temp & 0x1F0) >> 4);

	chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(

					temp & 0xF,

					null ? 0 : assoclen + IV + 1,

					null ? 0 : req->assoclen + IV + 1,

					temp, temp);

	if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL ||

	    subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA)
@@ -2367,23 +2360,24 @@ static struct sk_buff *create_authenc_wr(struct aead_request *req, 


	memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),

	       actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16));

	phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);

	ivptr = (u8 *)(phys_cpl + 1) + dst_size;

	ulptx = (struct ulptx_sgl *)(ivptr + IV);

	if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||

	    subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {

		memcpy(reqctx->iv, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE);

		memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->iv,

		memcpy(ivptr, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE);

		memcpy(ivptr + CTR_RFC3686_NONCE_SIZE, req->iv,

				CTR_RFC3686_IV_SIZE);

		*(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +

		*(__be32 *)(ivptr + CTR_RFC3686_NONCE_SIZE +

			CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);

	} else {

		memcpy(reqctx->iv, req->iv, IV);

		memcpy(ivptr, req->iv, IV);

	}

	phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);

	ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);

	chcr_add_aead_dst_ent(req, phys_cpl, assoclen, qid);

	chcr_add_aead_src_ent(req, ulptx, assoclen);

	chcr_add_aead_dst_ent(req, phys_cpl, qid);

	chcr_add_aead_src_ent(req, ulptx);

	atomic_inc(&adap->chcr_stats.cipher_rqst);

	temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +

		kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0);

	temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +

		kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0);

	create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,

		   transhdr_len, temp, 0);

	reqctx->skb = skb;
@@ -2470,8 +2464,7 @@ void chcr_aead_dma_unmap(struct device *dev, 
}



void chcr_add_aead_src_ent(struct aead_request *req,

			   struct ulptx_sgl *ulptx,

			   unsigned int assoclen)

			   struct ulptx_sgl *ulptx)

{

	struct ulptx_walk ulp_walk;

	struct chcr_aead_reqctx  *reqctx = aead_request_ctx(req);
@@ -2484,28 +2477,20 @@ void chcr_add_aead_src_ent(struct aead_request *req, 
			buf += reqctx->b0_len;

		}

		sg_pcopy_to_buffer(req->src, sg_nents(req->src),

				   buf, assoclen, 0);

		buf += assoclen;

		memcpy(buf, reqctx->iv, IV);

		buf += IV;

		sg_pcopy_to_buffer(req->src, sg_nents(req->src),

				   buf, req->cryptlen, req->assoclen);

				   buf, req->cryptlen + req->assoclen, 0);

	} else {

		ulptx_walk_init(&ulp_walk, ulptx);

		if (reqctx->b0_len)

			ulptx_walk_add_page(&ulp_walk, reqctx->b0_len,

					    &reqctx->b0_dma);

		ulptx_walk_add_sg(&ulp_walk, req->src, assoclen, 0);

		ulptx_walk_add_page(&ulp_walk, IV, &reqctx->iv_dma);

		ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen,

				  req->assoclen);

		ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen +

				  req->assoclen,  0);

		ulptx_walk_end(&ulp_walk);

	}

}



void chcr_add_aead_dst_ent(struct aead_request *req,

			   struct cpl_rx_phys_dsgl *phys_cpl,

			   unsigned int assoclen,

			   unsigned short qid)

{

	struct chcr_aead_reqctx  *reqctx = aead_request_ctx(req);
@@ -2516,12 +2501,10 @@ void chcr_add_aead_dst_ent(struct aead_request *req, 
	u32 temp;



	dsgl_walk_init(&dsgl_walk, phys_cpl);

	if (reqctx->b0_len)

		dsgl_walk_add_page(&dsgl_walk, reqctx->b0_len, &reqctx->b0_dma);

	dsgl_walk_add_sg(&dsgl_walk, req->dst, assoclen, 0);

	dsgl_walk_add_page(&dsgl_walk, IV, &reqctx->iv_dma);

	temp = req->cryptlen + (reqctx->op ? -authsize : authsize);

	dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, req->assoclen);

	dsgl_walk_add_page(&dsgl_walk, IV + reqctx->b0_len, &reqctx->iv_dma);

	temp = req->assoclen + req->cryptlen +

		(reqctx->op ? -authsize : authsize);

	dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, 0);

	dsgl_walk_end(&dsgl_walk, qid, ctx->pci_chan_id);

}
@@ -2689,8 +2672,7 @@ static int set_msg_len(u8 *block, unsigned int msglen, int csize) 
	return 0;

}



static void generate_b0(struct aead_request *req,

			struct chcr_aead_ctx *aeadctx,

static void generate_b0(struct aead_request *req, u8 *ivptr,

			unsigned short op_type)

{

	unsigned int l, lp, m;
@@ -2701,7 +2683,7 @@ static void generate_b0(struct aead_request *req, 


	m = crypto_aead_authsize(aead);



	memcpy(b0, reqctx->iv, 16);

	memcpy(b0, ivptr, 16);



	lp = b0[0];

	l = lp + 1;
@@ -2727,29 +2709,31 @@ static inline int crypto_ccm_check_iv(const u8 *iv) 
}



static int ccm_format_packet(struct aead_request *req,

			     struct chcr_aead_ctx *aeadctx,

			     u8 *ivptr,

			     unsigned int sub_type,

			     unsigned short op_type,

			     unsigned int assoclen)

{

	struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);

	struct crypto_aead *tfm = crypto_aead_reqtfm(req);

	struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));

	int rc = 0;



	if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {

		reqctx->iv[0] = 3;

		memcpy(reqctx->iv + 1, &aeadctx->salt[0], 3);

		memcpy(reqctx->iv + 4, req->iv, 8);

		memset(reqctx->iv + 12, 0, 4);

		ivptr[0] = 3;

		memcpy(ivptr + 1, &aeadctx->salt[0], 3);

		memcpy(ivptr + 4, req->iv, 8);

		memset(ivptr + 12, 0, 4);

	} else {

		memcpy(reqctx->iv, req->iv, 16);

		memcpy(ivptr, req->iv, 16);

	}

	if (assoclen)

		*((unsigned short *)(reqctx->scratch_pad + 16)) =

				htons(assoclen);



	generate_b0(req, aeadctx, op_type);

	generate_b0(req, ivptr, op_type);

	/* zero the ctr value */

	memset(reqctx->iv + 15 - reqctx->iv[0], 0, reqctx->iv[0] + 1);

	memset(ivptr + 15 - ivptr[0], 0, ivptr[0] + 1);

	return rc;

}
@@ -2775,7 +2759,7 @@ static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl, 
		((assoclen) ? CCM_AAD_FIELD_SIZE : 0);



	auth_offset = req->cryptlen ?

		(assoclen + IV + 1 + ccm_xtra) : 0;

		(req->assoclen + IV + 1 + ccm_xtra) : 0;

	if (op_type == CHCR_DECRYPT_OP) {

		if (crypto_aead_authsize(tfm) != req->cryptlen)

			tag_offset = crypto_aead_authsize(tfm);
@@ -2785,13 +2769,13 @@ static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl, 




	sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(c_id,

					 2, assoclen + 1 + ccm_xtra);

					 2, 1);

	sec_cpl->pldlen =

		htonl(assoclen + IV + req->cryptlen + ccm_xtra);

		htonl(req->assoclen + IV + req->cryptlen + ccm_xtra);

	/* For CCM there wil be b0 always. So AAD start will be 1 always */

	sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(

					1, assoclen + ccm_xtra, assoclen

					+ IV + 1 + ccm_xtra, 0);

				1 + IV,	IV + assoclen + ccm_xtra,

				req->assoclen + IV + 1 + ccm_xtra, 0);



	sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0,

					auth_offset, tag_offset,
@@ -2838,10 +2822,11 @@ static struct sk_buff *create_aead_ccm_wr(struct aead_request *req, 
	struct cpl_rx_phys_dsgl *phys_cpl;

	struct ulptx_sgl *ulptx;

	unsigned int transhdr_len;

	unsigned int dst_size = 0, kctx_len, dnents, temp;

	unsigned int dst_size = 0, kctx_len, dnents, temp, snents;

	unsigned int sub_type, assoclen = req->assoclen;

	unsigned int authsize = crypto_aead_authsize(tfm);

	int error = -EINVAL;

	u8 *ivptr;

	gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :

		GFP_ATOMIC;

	struct adapter *adap = padap(a_ctx(tfm)->dev);
@@ -2857,20 +2842,21 @@ static struct sk_buff *create_aead_ccm_wr(struct aead_request *req, 
	error = aead_ccm_validate_input(reqctx->op, req, aeadctx, sub_type);

	if (error)

		goto err;

	dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);

	dnents += sg_nents_xlen(req->dst, req->cryptlen

	dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen

			+ (reqctx->op ? -authsize : authsize),

			CHCR_DST_SG_SIZE, req->assoclen);

			CHCR_DST_SG_SIZE, 0);

	dnents += MIN_CCM_SG; // For IV and B0

	dst_size = get_space_for_phys_dsgl(dnents);

	snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,

			       CHCR_SRC_SG_SIZE, 0);

	snents += MIN_CCM_SG; //For B0

	kctx_len = roundup(aeadctx->enckey_len, 16) * 2;

	transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);

	reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen +

	reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen +

		       reqctx->b0_len) <= SGE_MAX_WR_LEN;

	temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen +

	temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen +

				     reqctx->b0_len, 16) :

		(sgl_len(reqctx->src_nents + reqctx->aad_nents +

				    MIN_CCM_SG) *  8);

		(sgl_len(snents) *  8);

	transhdr_len += temp;

	transhdr_len = roundup(transhdr_len, 16);
@@ -2880,14 +2866,14 @@ static struct sk_buff *create_aead_ccm_wr(struct aead_request *req, 
		chcr_aead_common_exit(req);

		return ERR_PTR(chcr_aead_fallback(req, reqctx->op));

	}

	skb = alloc_skb(SGE_MAX_WR_LEN,  flags);

	skb = alloc_skb(transhdr_len,  flags);



	if (!skb) {

		error = -ENOMEM;

		goto err;

	}



	chcr_req = (struct chcr_wr *) __skb_put_zero(skb, transhdr_len);

	chcr_req = __skb_put_zero(skb, transhdr_len);



	fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, reqctx->op);
@@ -2897,16 +2883,17 @@ static struct sk_buff *create_aead_ccm_wr(struct aead_request *req, 
			aeadctx->key, aeadctx->enckey_len);



	phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);

	ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);

	error = ccm_format_packet(req, aeadctx, sub_type, reqctx->op, assoclen);

	ivptr = (u8 *)(phys_cpl + 1) + dst_size;

	ulptx = (struct ulptx_sgl *)(ivptr + IV);

	error = ccm_format_packet(req, ivptr, sub_type, reqctx->op, assoclen);

	if (error)

		goto dstmap_fail;

	chcr_add_aead_dst_ent(req, phys_cpl, assoclen, qid);

	chcr_add_aead_src_ent(req, ulptx, assoclen);

	chcr_add_aead_dst_ent(req, phys_cpl, qid);

	chcr_add_aead_src_ent(req, ulptx);



	atomic_inc(&adap->chcr_stats.aead_rqst);

	temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +

		kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen +

	temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +

		kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen +

		reqctx->b0_len) : 0);

	create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0,

		    transhdr_len, temp, 0);
@@ -2931,10 +2918,11 @@ static struct sk_buff *create_gcm_wr(struct aead_request *req, 
	struct chcr_wr *chcr_req;

	struct cpl_rx_phys_dsgl *phys_cpl;

	struct ulptx_sgl *ulptx;

	unsigned int transhdr_len, dnents = 0;

	unsigned int transhdr_len, dnents = 0, snents;

	unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen;

	unsigned int authsize = crypto_aead_authsize(tfm);

	int error = -EINVAL;

	u8 *ivptr;

	gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :

		GFP_ATOMIC;

	struct adapter *adap = padap(a_ctx(tfm)->dev);
@@ -2946,19 +2934,19 @@ static struct sk_buff *create_gcm_wr(struct aead_request *req, 
	error = chcr_aead_common_init(req);

	if (error)

		return ERR_PTR(error);

	dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);

	dnents += sg_nents_xlen(req->dst, req->cryptlen +

	dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen +

				(reqctx->op ? -authsize : authsize),

				CHCR_DST_SG_SIZE, req->assoclen);

				CHCR_DST_SG_SIZE, 0);

	snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,

			       CHCR_SRC_SG_SIZE, 0);

	dnents += MIN_GCM_SG; // For IV

	dst_size = get_space_for_phys_dsgl(dnents);

	kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE;

	transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);

	reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <=

	reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) <=

			SGE_MAX_WR_LEN;

	temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16) :

		(sgl_len(reqctx->src_nents +

		reqctx->aad_nents + MIN_GCM_SG) * 8);

	temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16) :

		(sgl_len(snents) * 8);

	transhdr_len += temp;

	transhdr_len = roundup(transhdr_len, 16);

	if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
@@ -2968,7 +2956,7 @@ static struct sk_buff *create_gcm_wr(struct aead_request *req, 
		chcr_aead_common_exit(req);

		return ERR_PTR(chcr_aead_fallback(req, reqctx->op));

	}

	skb = alloc_skb(SGE_MAX_WR_LEN, flags);

	skb = alloc_skb(transhdr_len, flags);

	if (!skb) {

		error = -ENOMEM;

		goto err;
@@ -2979,15 +2967,15 @@ static struct sk_buff *create_gcm_wr(struct aead_request *req, 
	//Offset of tag from end

	temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize;

	chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(

					a_ctx(tfm)->dev->rx_channel_id, 2,

					(assoclen + 1));

					a_ctx(tfm)->dev->rx_channel_id, 2, 1);

	chcr_req->sec_cpl.pldlen =

		htonl(assoclen + IV + req->cryptlen);

		htonl(req->assoclen + IV + req->cryptlen);

	chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(

					assoclen ? 1 : 0, assoclen,

					assoclen + IV + 1, 0);

					assoclen ? 1 + IV : 0,

					assoclen ? IV + assoclen : 0,

					req->assoclen + IV + 1, 0);

	chcr_req->sec_cpl.cipherstop_lo_authinsert =

			FILL_SEC_CPL_AUTHINSERT(0, assoclen + IV + 1,

			FILL_SEC_CPL_AUTHINSERT(0, req->assoclen + IV + 1,

						temp, temp);

	chcr_req->sec_cpl.seqno_numivs =

			FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, (reqctx->op ==
@@ -3002,25 +2990,26 @@ static struct sk_buff *create_gcm_wr(struct aead_request *req, 
	memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),

	       GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE);



	phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);

	ivptr = (u8 *)(phys_cpl + 1) + dst_size;

	/* prepare a 16 byte iv */

	/* S   A   L  T |  IV | 0x00000001 */

	if (get_aead_subtype(tfm) ==

	    CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {

		memcpy(reqctx->iv, aeadctx->salt, 4);

		memcpy(reqctx->iv + 4, req->iv, GCM_RFC4106_IV_SIZE);

		memcpy(ivptr, aeadctx->salt, 4);

		memcpy(ivptr + 4, req->iv, GCM_RFC4106_IV_SIZE);

	} else {

		memcpy(reqctx->iv, req->iv, GCM_AES_IV_SIZE);

		memcpy(ivptr, req->iv, GCM_AES_IV_SIZE);

	}

	*((unsigned int *)(reqctx->iv + 12)) = htonl(0x01);

	*((unsigned int *)(ivptr + 12)) = htonl(0x01);



	phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);

	ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);

	ulptx = (struct ulptx_sgl *)(ivptr + 16);



	chcr_add_aead_dst_ent(req, phys_cpl, assoclen, qid);

	chcr_add_aead_src_ent(req, ulptx, assoclen);

	chcr_add_aead_dst_ent(req, phys_cpl, qid);

	chcr_add_aead_src_ent(req, ulptx);

	atomic_inc(&adap->chcr_stats.aead_rqst);

	temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +

		kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0);

	temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +

		kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0);

	create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,

		    transhdr_len, temp, reqctx->verify);

	reqctx->skb = skb;
@@ -4178,7 +4167,6 @@ static struct chcr_alg_template driver_algs[] = { 
			.setauthsize = chcr_authenc_null_setauthsize,

		}

	},



};



/*

drivers/crypto/chelsio/chcr_algo.h

+1 −1
Original line number Diff line number Diff line
@@ -262,7 +262,7 @@ 
#define MIN_AUTH_SG			1 /* IV */

#define MIN_GCM_SG			1 /* IV */

#define MIN_DIGEST_SG			1 /*Partial Buffer*/

#define MIN_CCM_SG			2 /*IV+B0*/

#define MIN_CCM_SG			1 /*IV+B0*/

#define CIP_SPACE_LEFT(len) \

	((SGE_MAX_WR_LEN - CIP_WR_MIN_LEN - (len)))

#define HASH_SPACE_LEFT(len) \

drivers/crypto/chelsio/chcr_crypto.h

+3 −7
Original line number Diff line number Diff line
@@ -41,7 +41,8 @@ 


#define CCM_B0_SIZE             16

#define CCM_AAD_FIELD_SIZE      2

#define T6_MAX_AAD_SIZE 511

// 511 - 16(For IV)

#define T6_MAX_AAD_SIZE 495





/* Define following if h/w is not dropping the AAD and IV data before
@@ -185,9 +186,6 @@ struct chcr_aead_reqctx { 
	dma_addr_t b0_dma;

	unsigned int b0_len;

	unsigned int op;

	short int aad_nents;

	short int src_nents;

	short int dst_nents;

	u16 imm;

	u16 verify;

	u8 iv[CHCR_MAX_CRYPTO_IV_LEN + MAX_SCRATCH_PAD_SIZE];
@@ -322,10 +320,8 @@ void chcr_aead_dma_unmap(struct device *dev, struct aead_request *req, 
			 unsigned short op_type);

void chcr_add_aead_dst_ent(struct aead_request *req,

			   struct cpl_rx_phys_dsgl *phys_cpl,

			   unsigned int assoclen,

			   unsigned short qid);

void chcr_add_aead_src_ent(struct aead_request *req, struct ulptx_sgl *ulptx,

			   unsigned int assoclen);

void chcr_add_aead_src_ent(struct aead_request *req, struct ulptx_sgl *ulptx);

void chcr_add_cipher_src_ent(struct ablkcipher_request *req,

			     void *ulptx,

			     struct  cipher_wr_param *wrparam);

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