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crypto: ccp - Replace BUG_ON with WARN_ON and a return code

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Replace the usage of BUG_ON with WARN_ON and return an error.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tom Lendacky
2015-10-01 16:32:31 -05:00
committed by Herbert Xu
parent 9196d9676f
commit 355eba5dda
4 changed files with 105 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

108
drivers/crypto/ccp/ccp-ops.c
View File

@@ -611,15 +611,16 @@ static void ccp_get_dm_area(struct ccp_dm_workarea *wa, unsigned int wa_offset,
1);
}
static void ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa,
struct scatterlist *sg,
unsigned int len, unsigned int se_len,
bool sign_extend)
static int ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa,
struct scatterlist *sg,
unsigned int len, unsigned int se_len,
bool sign_extend)
{
unsigned int nbytes, sg_offset, dm_offset, ksb_len, i;
u8 buffer[CCP_REVERSE_BUF_SIZE];
BUG_ON(se_len > sizeof(buffer));
if (WARN_ON(se_len > sizeof(buffer)))
return -EINVAL;
sg_offset = len;
dm_offset = 0;
@@ -642,6 +643,8 @@ static void ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa,
se_len - ksb_len);
}
}
return 0;
}
static void ccp_reverse_get_dm_area(struct ccp_dm_workarea *wa,
@@ -1606,8 +1609,10 @@ static int ccp_run_rsa_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
if (ret)
goto e_ksb;
ccp_reverse_set_dm_area(&exp, rsa->exp, rsa->exp_len, CCP_KSB_BYTES,
false);
ret = ccp_reverse_set_dm_area(&exp, rsa->exp, rsa->exp_len,
CCP_KSB_BYTES, false);
if (ret)
goto e_exp;
ret = ccp_copy_to_ksb(cmd_q, &exp, op.jobid, op.ksb_key,
CCP_PASSTHRU_BYTESWAP_NOOP);
if (ret) {
@@ -1623,11 +1628,15 @@ static int ccp_run_rsa_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
if (ret)
goto e_exp;
ccp_reverse_set_dm_area(&src, rsa->mod, rsa->mod_len, CCP_KSB_BYTES,
false);
ret = ccp_reverse_set_dm_area(&src, rsa->mod, rsa->mod_len,
CCP_KSB_BYTES, false);
if (ret)
goto e_src;
src.address += o_len; /* Adjust the address for the copy operation */
ccp_reverse_set_dm_area(&src, rsa->src, rsa->src_len, CCP_KSB_BYTES,
false);
ret = ccp_reverse_set_dm_area(&src, rsa->src, rsa->src_len,
CCP_KSB_BYTES, false);
if (ret)
goto e_src;
src.address -= o_len; /* Reset the address to original value */
/* Prepare the output area for the operation */
@@ -1841,21 +1850,27 @@ static int ccp_run_ecc_mm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
save = src.address;
/* Copy the ECC modulus */
ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len,
CCP_ECC_OPERAND_SIZE, false);
ret = ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len,
CCP_ECC_OPERAND_SIZE, false);
if (ret)
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
/* Copy the first operand */
ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_1,
ecc->u.mm.operand_1_len,
CCP_ECC_OPERAND_SIZE, false);
ret = ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_1,
ecc->u.mm.operand_1_len,
CCP_ECC_OPERAND_SIZE, false);
if (ret)
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
if (ecc->function != CCP_ECC_FUNCTION_MINV_384BIT) {
/* Copy the second operand */
ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_2,
ecc->u.mm.operand_2_len,
CCP_ECC_OPERAND_SIZE, false);
ret = ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_2,
ecc->u.mm.operand_2_len,
CCP_ECC_OPERAND_SIZE, false);
if (ret)
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
}
@@ -1960,18 +1975,24 @@ static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
save = src.address;
/* Copy the ECC modulus */
ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len,
CCP_ECC_OPERAND_SIZE, false);
ret = ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len,
CCP_ECC_OPERAND_SIZE, false);
if (ret)
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
/* Copy the first point X and Y coordinate */
ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.x,
ecc->u.pm.point_1.x_len,
CCP_ECC_OPERAND_SIZE, false);
ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.x,
ecc->u.pm.point_1.x_len,
CCP_ECC_OPERAND_SIZE, false);
if (ret)
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.y,
ecc->u.pm.point_1.y_len,
CCP_ECC_OPERAND_SIZE, false);
ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.y,
ecc->u.pm.point_1.y_len,
CCP_ECC_OPERAND_SIZE, false);
if (ret)
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
/* Set the first point Z coordianate to 1 */
@@ -1980,13 +2001,17 @@ static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
if (ecc->function == CCP_ECC_FUNCTION_PADD_384BIT) {
/* Copy the second point X and Y coordinate */
ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.x,
ecc->u.pm.point_2.x_len,
CCP_ECC_OPERAND_SIZE, false);
ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.x,
ecc->u.pm.point_2.x_len,
CCP_ECC_OPERAND_SIZE, false);
if (ret)
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.y,
ecc->u.pm.point_2.y_len,
CCP_ECC_OPERAND_SIZE, false);
ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.y,
ecc->u.pm.point_2.y_len,
CCP_ECC_OPERAND_SIZE, false);
if (ret)
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
/* Set the second point Z coordianate to 1 */
@@ -1994,16 +2019,21 @@ static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
src.address += CCP_ECC_OPERAND_SIZE;
} else {
/* Copy the Domain "a" parameter */
ccp_reverse_set_dm_area(&src, ecc->u.pm.domain_a,
ecc->u.pm.domain_a_len,
CCP_ECC_OPERAND_SIZE, false);
ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.domain_a,
ecc->u.pm.domain_a_len,
CCP_ECC_OPERAND_SIZE, false);
if (ret)
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
if (ecc->function == CCP_ECC_FUNCTION_PMUL_384BIT) {
/* Copy the scalar value */
ccp_reverse_set_dm_area(&src, ecc->u.pm.scalar,
ecc->u.pm.scalar_len,
CCP_ECC_OPERAND_SIZE, false);
ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.scalar,
ecc->u.pm.scalar_len,
CCP_ECC_OPERAND_SIZE,
false);
if (ret)
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
}
}