crypto: ccp - Replace BUG_ON with WARN_ON and a return code
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:
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9196d9676f
commit
355eba5dda
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@ -118,10 +118,19 @@ static int ccp_do_cmac_update(struct ahash_request *req, unsigned int nbytes,
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if (rctx->buf_count) {
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sg_init_one(&rctx->buf_sg, rctx->buf, rctx->buf_count);
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sg = ccp_crypto_sg_table_add(&rctx->data_sg, &rctx->buf_sg);
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if (!sg) {
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ret = -EINVAL;
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goto e_free;
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}
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}
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if (nbytes)
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if (nbytes) {
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sg = ccp_crypto_sg_table_add(&rctx->data_sg, req->src);
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if (!sg) {
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ret = -EINVAL;
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goto e_free;
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}
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}
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if (need_pad) {
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int pad_length = block_size - (len & (block_size - 1));
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@ -132,6 +141,10 @@ static int ccp_do_cmac_update(struct ahash_request *req, unsigned int nbytes,
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rctx->pad[0] = 0x80;
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sg_init_one(&rctx->pad_sg, rctx->pad, pad_length);
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sg = ccp_crypto_sg_table_add(&rctx->data_sg, &rctx->pad_sg);
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if (!sg) {
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ret = -EINVAL;
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goto e_free;
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}
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}
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if (sg) {
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sg_mark_end(sg);
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@ -162,6 +175,11 @@ static int ccp_do_cmac_update(struct ahash_request *req, unsigned int nbytes,
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ret = ccp_crypto_enqueue_request(&req->base, &rctx->cmd);
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return ret;
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e_free:
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sg_free_table(&rctx->data_sg);
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return ret;
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}
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@ -305,14 +305,16 @@ struct scatterlist *ccp_crypto_sg_table_add(struct sg_table *table,
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for (sg = table->sgl; sg; sg = sg_next(sg))
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if (!sg_page(sg))
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break;
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BUG_ON(!sg);
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if (WARN_ON(!sg))
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return NULL;
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for (; sg && sg_add; sg = sg_next(sg), sg_add = sg_next(sg_add)) {
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sg_set_page(sg, sg_page(sg_add), sg_add->length,
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sg_add->offset);
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sg_last = sg;
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}
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BUG_ON(sg_add);
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if (WARN_ON(sg_add))
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return NULL;
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return sg_last;
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}
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@ -107,7 +107,15 @@ static int ccp_do_sha_update(struct ahash_request *req, unsigned int nbytes,
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sg_init_one(&rctx->buf_sg, rctx->buf, rctx->buf_count);
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sg = ccp_crypto_sg_table_add(&rctx->data_sg, &rctx->buf_sg);
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if (!sg) {
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ret = -EINVAL;
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goto e_free;
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}
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sg = ccp_crypto_sg_table_add(&rctx->data_sg, req->src);
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if (!sg) {
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ret = -EINVAL;
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goto e_free;
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}
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sg_mark_end(sg);
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sg = rctx->data_sg.sgl;
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@ -141,6 +149,11 @@ static int ccp_do_sha_update(struct ahash_request *req, unsigned int nbytes,
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ret = ccp_crypto_enqueue_request(&req->base, &rctx->cmd);
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return ret;
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e_free:
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sg_free_table(&rctx->data_sg);
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return ret;
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}
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@ -611,15 +611,16 @@ static void ccp_get_dm_area(struct ccp_dm_workarea *wa, unsigned int wa_offset,
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1);
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}
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static void ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa,
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struct scatterlist *sg,
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unsigned int len, unsigned int se_len,
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bool sign_extend)
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static int ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa,
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struct scatterlist *sg,
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unsigned int len, unsigned int se_len,
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bool sign_extend)
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{
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unsigned int nbytes, sg_offset, dm_offset, ksb_len, i;
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u8 buffer[CCP_REVERSE_BUF_SIZE];
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BUG_ON(se_len > sizeof(buffer));
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if (WARN_ON(se_len > sizeof(buffer)))
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return -EINVAL;
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sg_offset = len;
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dm_offset = 0;
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@ -642,6 +643,8 @@ static void ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa,
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se_len - ksb_len);
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}
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}
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return 0;
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}
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static void ccp_reverse_get_dm_area(struct ccp_dm_workarea *wa,
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@ -1606,8 +1609,10 @@ static int ccp_run_rsa_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
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if (ret)
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goto e_ksb;
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ccp_reverse_set_dm_area(&exp, rsa->exp, rsa->exp_len, CCP_KSB_BYTES,
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false);
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ret = ccp_reverse_set_dm_area(&exp, rsa->exp, rsa->exp_len,
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CCP_KSB_BYTES, false);
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if (ret)
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goto e_exp;
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ret = ccp_copy_to_ksb(cmd_q, &exp, op.jobid, op.ksb_key,
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CCP_PASSTHRU_BYTESWAP_NOOP);
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if (ret) {
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@ -1623,11 +1628,15 @@ static int ccp_run_rsa_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
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if (ret)
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goto e_exp;
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ccp_reverse_set_dm_area(&src, rsa->mod, rsa->mod_len, CCP_KSB_BYTES,
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false);
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ret = ccp_reverse_set_dm_area(&src, rsa->mod, rsa->mod_len,
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CCP_KSB_BYTES, false);
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if (ret)
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goto e_src;
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src.address += o_len; /* Adjust the address for the copy operation */
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ccp_reverse_set_dm_area(&src, rsa->src, rsa->src_len, CCP_KSB_BYTES,
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false);
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ret = ccp_reverse_set_dm_area(&src, rsa->src, rsa->src_len,
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CCP_KSB_BYTES, false);
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if (ret)
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goto e_src;
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src.address -= o_len; /* Reset the address to original value */
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/* Prepare the output area for the operation */
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@ -1841,21 +1850,27 @@ static int ccp_run_ecc_mm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
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save = src.address;
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/* Copy the ECC modulus */
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ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len,
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CCP_ECC_OPERAND_SIZE, false);
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ret = ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len,
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CCP_ECC_OPERAND_SIZE, false);
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if (ret)
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goto e_src;
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src.address += CCP_ECC_OPERAND_SIZE;
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/* Copy the first operand */
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ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_1,
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ecc->u.mm.operand_1_len,
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CCP_ECC_OPERAND_SIZE, false);
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ret = ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_1,
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ecc->u.mm.operand_1_len,
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CCP_ECC_OPERAND_SIZE, false);
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if (ret)
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goto e_src;
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src.address += CCP_ECC_OPERAND_SIZE;
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if (ecc->function != CCP_ECC_FUNCTION_MINV_384BIT) {
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/* Copy the second operand */
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ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_2,
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ecc->u.mm.operand_2_len,
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CCP_ECC_OPERAND_SIZE, false);
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ret = ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_2,
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ecc->u.mm.operand_2_len,
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CCP_ECC_OPERAND_SIZE, false);
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if (ret)
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goto e_src;
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src.address += CCP_ECC_OPERAND_SIZE;
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}
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@ -1960,18 +1975,24 @@ static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
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save = src.address;
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/* Copy the ECC modulus */
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ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len,
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CCP_ECC_OPERAND_SIZE, false);
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ret = ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len,
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CCP_ECC_OPERAND_SIZE, false);
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if (ret)
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goto e_src;
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src.address += CCP_ECC_OPERAND_SIZE;
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/* Copy the first point X and Y coordinate */
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ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.x,
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ecc->u.pm.point_1.x_len,
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CCP_ECC_OPERAND_SIZE, false);
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ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.x,
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ecc->u.pm.point_1.x_len,
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CCP_ECC_OPERAND_SIZE, false);
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if (ret)
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goto e_src;
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src.address += CCP_ECC_OPERAND_SIZE;
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ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.y,
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ecc->u.pm.point_1.y_len,
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CCP_ECC_OPERAND_SIZE, false);
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ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.y,
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ecc->u.pm.point_1.y_len,
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CCP_ECC_OPERAND_SIZE, false);
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if (ret)
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goto e_src;
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src.address += CCP_ECC_OPERAND_SIZE;
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/* Set the first point Z coordianate to 1 */
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@ -1980,13 +2001,17 @@ static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
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if (ecc->function == CCP_ECC_FUNCTION_PADD_384BIT) {
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/* Copy the second point X and Y coordinate */
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ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.x,
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ecc->u.pm.point_2.x_len,
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CCP_ECC_OPERAND_SIZE, false);
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ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.x,
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ecc->u.pm.point_2.x_len,
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CCP_ECC_OPERAND_SIZE, false);
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if (ret)
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goto e_src;
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src.address += CCP_ECC_OPERAND_SIZE;
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ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.y,
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ecc->u.pm.point_2.y_len,
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CCP_ECC_OPERAND_SIZE, false);
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ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.y,
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ecc->u.pm.point_2.y_len,
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CCP_ECC_OPERAND_SIZE, false);
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if (ret)
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goto e_src;
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src.address += CCP_ECC_OPERAND_SIZE;
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/* Set the second point Z coordianate to 1 */
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@ -1994,16 +2019,21 @@ static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
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src.address += CCP_ECC_OPERAND_SIZE;
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} else {
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/* Copy the Domain "a" parameter */
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ccp_reverse_set_dm_area(&src, ecc->u.pm.domain_a,
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ecc->u.pm.domain_a_len,
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CCP_ECC_OPERAND_SIZE, false);
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ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.domain_a,
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ecc->u.pm.domain_a_len,
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CCP_ECC_OPERAND_SIZE, false);
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if (ret)
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goto e_src;
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src.address += CCP_ECC_OPERAND_SIZE;
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if (ecc->function == CCP_ECC_FUNCTION_PMUL_384BIT) {
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/* Copy the scalar value */
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ccp_reverse_set_dm_area(&src, ecc->u.pm.scalar,
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ecc->u.pm.scalar_len,
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CCP_ECC_OPERAND_SIZE, false);
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ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.scalar,
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ecc->u.pm.scalar_len,
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CCP_ECC_OPERAND_SIZE,
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false);
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if (ret)
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goto e_src;
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src.address += CCP_ECC_OPERAND_SIZE;
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}
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}
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