From b096b544d6c3cb65c53551ddedd21180f9087ab9 Mon Sep 17 00:00:00 2001 From: LEROY Christophe Date: Mon, 6 Jun 2016 13:20:34 +0200 Subject: [PATCH] crypto: talitos - using helpers for all talitos_ptr operations Use helper for all modifications to talitos_ptr in preparation to the implementation of AEAD for SEC1 to_talitos_ptr_extent_clear() has been removed in favor of to_talitos_ptr_ext_set() to set any value and to_talitos_ptr_ext_or() to or the extent field with a value name has been shorten to help keeping single lines of 80 chars Signed-off-by: Christophe Leroy Signed-off-by: Herbert Xu --- drivers/crypto/talitos.c | 59 +++++++++++++++++++++++----------------- 1 file changed, 34 insertions(+), 25 deletions(-) diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index b7ee8d30147d..a92aa37f32a0 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -91,10 +91,17 @@ static unsigned short from_talitos_ptr_len(struct talitos_ptr *ptr, return be16_to_cpu(ptr->len); } -static void to_talitos_ptr_extent_clear(struct talitos_ptr *ptr, bool is_sec1) +static void to_talitos_ptr_ext_set(struct talitos_ptr *ptr, u8 val, + bool is_sec1) { if (!is_sec1) - ptr->j_extent = 0; + ptr->j_extent = val; +} + +static void to_talitos_ptr_ext_or(struct talitos_ptr *ptr, u8 val, bool is_sec1) +{ + if (!is_sec1) + ptr->j_extent |= val; } /* @@ -111,7 +118,7 @@ static void map_single_talitos_ptr(struct device *dev, to_talitos_ptr_len(ptr, len, is_sec1); to_talitos_ptr(ptr, dma_addr, is_sec1); - to_talitos_ptr_extent_clear(ptr, is_sec1); + to_talitos_ptr_ext_set(ptr, 0, is_sec1); } /* @@ -1050,8 +1057,8 @@ static int sg_to_link_tbl_offset(struct scatterlist *sg, int sg_count, to_talitos_ptr(link_tbl_ptr + count, sg_dma_address(sg) + offset, 0); - link_tbl_ptr[count].len = cpu_to_be16(len); - link_tbl_ptr[count].j_extent = 0; + to_talitos_ptr_len(link_tbl_ptr + count, len, 0); + to_talitos_ptr_ext_set(link_tbl_ptr + count, 0, 0); count++; cryptlen -= len; offset = 0; @@ -1062,7 +1069,8 @@ next: /* tag end of link table */ if (count > 0) - link_tbl_ptr[count - 1].j_extent = DESC_PTR_LNKTBL_RETURN; + to_talitos_ptr_ext_set(link_tbl_ptr + count - 1, + DESC_PTR_LNKTBL_RETURN, 0); return count; } @@ -1102,14 +1110,14 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq, (areq->src == areq->dst) ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); /* hmac data */ - desc->ptr[1].len = cpu_to_be16(areq->assoclen); + to_talitos_ptr_len(&desc->ptr[1], areq->assoclen, 0); if (sg_count > 1 && (ret = sg_to_link_tbl_offset(areq->src, sg_count, 0, areq->assoclen, &edesc->link_tbl[tbl_off])) > 1) { to_talitos_ptr(&desc->ptr[1], edesc->dma_link_tbl + tbl_off * sizeof(struct talitos_ptr), 0); - desc->ptr[1].j_extent = DESC_PTR_LNKTBL_JUMP; + to_talitos_ptr_ext_set(&desc->ptr[1], DESC_PTR_LNKTBL_JUMP, 0); dma_sync_single_for_device(dev, edesc->dma_link_tbl, edesc->dma_len, DMA_BIDIRECTIONAL); @@ -1117,13 +1125,13 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq, tbl_off += ret; } else { to_talitos_ptr(&desc->ptr[1], sg_dma_address(areq->src), 0); - desc->ptr[1].j_extent = 0; + to_talitos_ptr_ext_set(&desc->ptr[1], 0, 0); } /* cipher iv */ to_talitos_ptr(&desc->ptr[2], edesc->iv_dma, 0); - desc->ptr[2].len = cpu_to_be16(ivsize); - desc->ptr[2].j_extent = 0; + to_talitos_ptr_len(&desc->ptr[2], ivsize, 0); + to_talitos_ptr_ext_set(&desc->ptr[2], 0, 0); /* cipher key */ map_single_talitos_ptr(dev, &desc->ptr[3], ctx->enckeylen, @@ -1136,8 +1144,8 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq, * extent is bytes of HMAC postpended to ciphertext, * typically 12 for ipsec */ - desc->ptr[4].len = cpu_to_be16(cryptlen); - desc->ptr[4].j_extent = authsize; + to_talitos_ptr_len(&desc->ptr[4], cryptlen, 0); + to_talitos_ptr_ext_set(&desc->ptr[4], authsize, 0); sg_link_tbl_len = cryptlen; if (edesc->desc.hdr & DESC_HDR_MODE1_MDEU_CICV) @@ -1150,7 +1158,7 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq, areq->assoclen, sg_link_tbl_len, &edesc->link_tbl[tbl_off])) > 1) { - desc->ptr[4].j_extent |= DESC_PTR_LNKTBL_JUMP; + to_talitos_ptr_ext_or(&desc->ptr[4], DESC_PTR_LNKTBL_JUMP, 0); to_talitos_ptr(&desc->ptr[4], edesc->dma_link_tbl + tbl_off * sizeof(struct talitos_ptr), 0); @@ -1163,8 +1171,8 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq, } /* cipher out */ - desc->ptr[5].len = cpu_to_be16(cryptlen); - desc->ptr[5].j_extent = authsize; + to_talitos_ptr_len(&desc->ptr[5], cryptlen, 0); + to_talitos_ptr_ext_set(&desc->ptr[5], authsize, 0); if (areq->src != areq->dst) sg_count = dma_map_sg(dev, areq->dst, edesc->dst_nents ? : 1, @@ -1186,17 +1194,17 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq, /* Add an entry to the link table for ICV data */ tbl_ptr += sg_count - 1; - tbl_ptr->j_extent = 0; + to_talitos_ptr_ext_set(tbl_ptr, 0, 0); tbl_ptr++; - tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN; - tbl_ptr->len = cpu_to_be16(authsize); + to_talitos_ptr_ext_set(tbl_ptr, DESC_PTR_LNKTBL_RETURN, 0); + to_talitos_ptr_len(tbl_ptr, authsize, 0); /* icv data follows link tables */ to_talitos_ptr(tbl_ptr, edesc->dma_link_tbl + (edesc->src_nents + edesc->dst_nents + 2) * sizeof(struct talitos_ptr) + authsize, 0); - desc->ptr[5].j_extent |= DESC_PTR_LNKTBL_JUMP; + to_talitos_ptr_ext_or(&desc->ptr[5], DESC_PTR_LNKTBL_JUMP, 0); dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl, edesc->dma_len, DMA_BIDIRECTIONAL); @@ -1493,7 +1501,7 @@ int map_sg_in_talitos_ptr(struct device *dev, struct scatterlist *src, len, DMA_TO_DEVICE); } } else { - to_talitos_ptr_extent_clear(ptr, is_sec1); + to_talitos_ptr_ext_set(ptr, 0, is_sec1); sg_count = dma_map_sg(dev, src, edesc->src_nents ? : 1, dir); @@ -1504,7 +1512,8 @@ int map_sg_in_talitos_ptr(struct device *dev, struct scatterlist *src, &edesc->link_tbl[0]); if (sg_count > 1) { to_talitos_ptr(ptr, edesc->dma_link_tbl, 0); - ptr->j_extent |= DESC_PTR_LNKTBL_JUMP; + to_talitos_ptr_ext_or(ptr, DESC_PTR_LNKTBL_JUMP, + 0); dma_sync_single_for_device(dev, edesc->dma_link_tbl, edesc->dma_len, @@ -1544,7 +1553,7 @@ void map_sg_out_talitos_ptr(struct device *dev, struct scatterlist *dst, len, DMA_FROM_DEVICE); } } else { - to_talitos_ptr_extent_clear(ptr, is_sec1); + to_talitos_ptr_ext_set(ptr, 0, is_sec1); if (sg_count == 1) { to_talitos_ptr(ptr, sg_dma_address(dst), is_sec1); @@ -1555,7 +1564,7 @@ void map_sg_out_talitos_ptr(struct device *dev, struct scatterlist *dst, to_talitos_ptr(ptr, edesc->dma_link_tbl + (edesc->src_nents + 1) * sizeof(struct talitos_ptr), 0); - ptr->j_extent |= DESC_PTR_LNKTBL_JUMP; + to_talitos_ptr_ext_or(ptr, DESC_PTR_LNKTBL_JUMP, 0); sg_to_link_tbl(dst, sg_count, len, link_tbl_ptr); dma_sync_single_for_device(dev, edesc->dma_link_tbl, edesc->dma_len, @@ -1586,7 +1595,7 @@ static int common_nonsnoop(struct talitos_edesc *edesc, /* cipher iv */ to_talitos_ptr(&desc->ptr[1], edesc->iv_dma, is_sec1); to_talitos_ptr_len(&desc->ptr[1], ivsize, is_sec1); - to_talitos_ptr_extent_clear(&desc->ptr[1], is_sec1); + to_talitos_ptr_ext_set(&desc->ptr[1], 0, is_sec1); /* cipher key */ map_single_talitos_ptr(dev, &desc->ptr[2], ctx->keylen, -- 2.20.1