git/linux-cryptodev-2.6
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git synced 2026-05-01 15:15:19 -04:00
Code Issues Packages Projects Releases Wiki Activity

crypto: 842 - Add CRC and validation support

Browse Source 
This patch adds CRC generation and validation support for nx-842.
Add CRC flag so that nx842 coprocessor includes CRC during compression
and validates during decompression.

Also changes in 842 SW compression to append CRC value at the end
of template and checks during decompression.

Signed-off-by: Haren Myneni <haren@us.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Haren Myneni
2015-10-08 13:45:51 -07:00
committed by Herbert Xu
parent f5128432b0
commit ea0b3984c1
5 changed files with 40 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/crypto/nx/nx-842-powernv.c
View File

@@ -491,7 +491,7 @@ static int nx842_powernv_compress(const unsigned char *in, unsigned int inlen,
void *wmem)
{
return nx842_powernv_function(in, inlen, out, outlenp,
wmem, CCW_FC_842_COMP_NOCRC);
wmem, CCW_FC_842_COMP_CRC);
}
/**
@@ -519,7 +519,7 @@ static int nx842_powernv_decompress(const unsigned char *in, unsigned int inlen,
void *wmem)
{
return nx842_powernv_function(in, inlen, out, outlenp,
wmem, CCW_FC_842_DECOMP_NOCRC);
wmem, CCW_FC_842_DECOMP_CRC);
}
static int __init nx842_powernv_probe(struct device_node *dn)

8
drivers/crypto/nx/nx-842-pseries.c
View File

@@ -234,6 +234,10 @@ static int nx842_validate_result(struct device *dev,
dev_dbg(dev, "%s: Out of space in output buffer\n",
__func__);
return -ENOSPC;
case 65: /* Calculated CRC doesn't match the passed value */
dev_dbg(dev, "%s: CRC mismatch for decompression\n",
__func__);
return -EINVAL;
case 66: /* Input data contains an illegal template field */
case 67: /* Template indicates data past the end of the input stream */
dev_dbg(dev, "%s: Bad data for decompression (code:%d)\n",
@@ -324,7 +328,7 @@ static int nx842_pseries_compress(const unsigned char *in, unsigned int inlen,
slout.entries = (struct nx842_slentry *)workmem->slout;
/* Init operation */
op.flags = NX842_OP_COMPRESS;
op.flags = NX842_OP_COMPRESS_CRC;
csbcpb = &workmem->csbcpb;
memset(csbcpb, 0, sizeof(*csbcpb));
op.csbcpb = nx842_get_pa(csbcpb);
@@ -457,7 +461,7 @@ static int nx842_pseries_decompress(const unsigned char *in, unsigned int inlen,
slout.entries = (struct nx842_slentry *)workmem->slout;
/* Init operation */
op.flags = NX842_OP_DECOMPRESS;
op.flags = NX842_OP_DECOMPRESS_CRC;
csbcpb = &workmem->csbcpb;
memset(csbcpb, 0, sizeof(*csbcpb));
op.csbcpb = nx842_get_pa(csbcpb);