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crypto: qat - Fix assumption that sg in and out will have the same nents 

Fixed invalid assumpion that the sgl in and sgl out will always have the same
number of entries.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tadeusz Struk 2014-12-08 12:05:42 -08:00 committed by Herbert Xu
parent 0f477b655a
commit 82f82504b8
2 changed files with 50 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
drivers/crypto/qat/qat_common/qat_algs.c
View File

@ -557,7 +557,8 @@ static void qat_alg_free_bufl(struct qat_crypto_instance *inst,
dma_addr_t blp = qat_req->buf.blp;
dma_addr_t blpout = qat_req->buf.bloutp;
size_t sz = qat_req->buf.sz;
int i, bufs = bl->num_bufs;
size_t sz_out = qat_req->buf.sz_out;
int i;
for (i = 0; i < bl->num_bufs; i++)
dma_unmap_single(dev, bl->bufers[i].addr,
@ -567,14 +568,14 @@ static void qat_alg_free_bufl(struct qat_crypto_instance *inst,
kfree(bl);
if (blp != blpout) {
/* If out of place operation dma unmap only data */
int bufless = bufs - blout->num_mapped_bufs;
int bufless = blout->num_bufs - blout->num_mapped_bufs;
for (i = bufless; i < bufs; i++) {
for (i = bufless; i < blout->num_bufs; i++) {
dma_unmap_single(dev, blout->bufers[i].addr,
blout->bufers[i].len,
DMA_BIDIRECTIONAL);
}
dma_unmap_single(dev, blpout, sz, DMA_TO_DEVICE);
dma_unmap_single(dev, blpout, sz_out, DMA_TO_DEVICE);
kfree(blout);
}
}
@ -587,19 +588,20 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
struct qat_crypto_request *qat_req)
{
struct device *dev = &GET_DEV(inst->accel_dev);
int i, bufs = 0, n = sg_nents(sgl), assoc_n = sg_nents(assoc);
int i, bufs = 0, sg_nctr = 0;
int n = sg_nents(sgl), assoc_n = sg_nents(assoc);
struct qat_alg_buf_list *bufl;
struct qat_alg_buf_list *buflout = NULL;
dma_addr_t blp;
dma_addr_t bloutp = 0;
struct scatterlist *sg;
size_t sz = sizeof(struct qat_alg_buf_list) +
size_t sz_out, sz = sizeof(struct qat_alg_buf_list) +
((1 + n + assoc_n) * sizeof(struct qat_alg_buf));
if (unlikely(!n))
return -EINVAL;
bufl = kmalloc_node(sz, GFP_ATOMIC,
bufl = kzalloc_node(sz, GFP_ATOMIC,
dev_to_node(&GET_DEV(inst->accel_dev)));
if (unlikely(!bufl))
return -ENOMEM;
@ -620,15 +622,20 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
goto err;
bufs++;
}
bufl->bufers[bufs].addr = dma_map_single(dev, iv, ivlen,
DMA_BIDIRECTIONAL);
bufl->bufers[bufs].len = ivlen;
if (unlikely(dma_mapping_error(dev, bufl->bufers[bufs].addr)))
goto err;
bufs++;
if (ivlen) {
bufl->bufers[bufs].addr = dma_map_single(dev, iv, ivlen,
DMA_BIDIRECTIONAL);
bufl->bufers[bufs].len = ivlen;
if (unlikely(dma_mapping_error(dev, bufl->bufers[bufs].addr)))
goto err;
bufs++;
}
for_each_sg(sgl, sg, n, i) {
int y = i + bufs;
int y = sg_nctr + bufs;
if (!sg->length)
continue;
bufl->bufers[y].addr = dma_map_single(dev, sg_virt(sg),
sg->length,
@ -636,8 +643,9 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
bufl->bufers[y].len = sg->length;
if (unlikely(dma_mapping_error(dev, bufl->bufers[y].addr)))
goto err;
sg_nctr++;
}
bufl->num_bufs = n + bufs;
bufl->num_bufs = sg_nctr + bufs;
qat_req->buf.bl = bufl;
qat_req->buf.blp = blp;
qat_req->buf.sz = sz;
@ -645,11 +653,15 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
if (sgl != sglout) {
struct qat_alg_buf *bufers;
buflout = kmalloc_node(sz, GFP_ATOMIC,
n = sg_nents(sglout);
sz_out = sizeof(struct qat_alg_buf_list) +
((1 + n + assoc_n) * sizeof(struct qat_alg_buf));
sg_nctr = 0;
buflout = kzalloc_node(sz_out, GFP_ATOMIC,
dev_to_node(&GET_DEV(inst->accel_dev)));
if (unlikely(!buflout))
goto err;
bloutp = dma_map_single(dev, buflout, sz, DMA_TO_DEVICE);
bloutp = dma_map_single(dev, buflout, sz_out, DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(dev, bloutp)))
goto err;
bufers = buflout->bufers;
@ -660,47 +672,51 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
bufers[i].addr = bufl->bufers[i].addr;
}
for_each_sg(sglout, sg, n, i) {
int y = i + bufs;
int y = sg_nctr + bufs;
if (!sg->length)
continue;
bufers[y].addr = dma_map_single(dev, sg_virt(sg),
sg->length,
DMA_BIDIRECTIONAL);
buflout->bufers[y].len = sg->length;
if (unlikely(dma_mapping_error(dev, bufers[y].addr)))
goto err;
bufers[y].len = sg->length;
sg_nctr++;
}
buflout->num_bufs = n + bufs;
buflout->num_mapped_bufs = n;
buflout->num_bufs = sg_nctr + bufs;
buflout->num_mapped_bufs = sg_nctr;
qat_req->buf.blout = buflout;
qat_req->buf.bloutp = bloutp;
qat_req->buf.sz_out = sz_out;
} else {
/* Otherwise set the src and dst to the same address */
qat_req->buf.bloutp = qat_req->buf.blp;
qat_req->buf.sz_out = 0;
}
return 0;
err:
dev_err(dev, "Failed to map buf for dma\n");
for_each_sg(sgl, sg, n + bufs, i) {
if (!dma_mapping_error(dev, bufl->bufers[i].addr)) {
sg_nctr = 0;
for (i = 0; i < n + bufs; i++)
if (!dma_mapping_error(dev, bufl->bufers[i].addr))
dma_unmap_single(dev, bufl->bufers[i].addr,
bufl->bufers[i].len,
DMA_BIDIRECTIONAL);
}
}
if (!dma_mapping_error(dev, blp))
dma_unmap_single(dev, blp, sz, DMA_TO_DEVICE);
kfree(bufl);
if (sgl != sglout && buflout) {
for_each_sg(sglout, sg, n, i) {
int y = i + bufs;
if (!dma_mapping_error(dev, buflout->bufers[y].addr))
dma_unmap_single(dev, buflout->bufers[y].addr,
buflout->bufers[y].len,
n = sg_nents(sglout);
for (i = bufs; i < n + bufs; i++)
if (!dma_mapping_error(dev, buflout->bufers[i].addr))
dma_unmap_single(dev, buflout->bufers[i].addr,
buflout->bufers[i].len,
DMA_BIDIRECTIONAL);
}
if (!dma_mapping_error(dev, bloutp))
dma_unmap_single(dev, bloutp, sz, DMA_TO_DEVICE);
dma_unmap_single(dev, bloutp, sz_out, DMA_TO_DEVICE);
kfree(buflout);
}
return -ENOMEM;

1
drivers/crypto/qat/qat_common/qat_crypto.h
View File

@ -72,6 +72,7 @@ struct qat_crypto_request_buffs {
struct qat_alg_buf_list *blout;
dma_addr_t bloutp;
size_t sz;
size_t sz_out;
};
struct qat_crypto_request {