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KEYS: DH: Use crypto_wait_req

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This patch replaces the custom crypto completion function with
crypto_req_done.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2023-02-06 18:22:29 +08:00
parent 8d338c76f7
commit 5419f2b27e
1 changed files with 5 additions and 25 deletions
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30
security/keys/dh.c
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@ -64,22 +64,6 @@ static void dh_free_data(struct dh *dh)
kfree_sensitive(dh->g);
}
struct dh_completion {
struct completion completion;
int err;
};
static void dh_crypto_done(struct crypto_async_request *req, int err)
{
struct dh_completion *compl = req->data;
if (err == -EINPROGRESS)
return;
compl->err = err;
complete(&compl->completion);
}
static int kdf_alloc(struct crypto_shash **hash, char *hashname)
{
struct crypto_shash *tfm;
@ -146,7 +130,7 @@ long __keyctl_dh_compute(struct keyctl_dh_params __user *params,
struct keyctl_dh_params pcopy;
struct dh dh_inputs;
struct scatterlist outsg;
struct dh_completion compl;
DECLARE_CRYPTO_WAIT(compl);
struct crypto_kpp *tfm;
struct kpp_request *req;
uint8_t *secret;
@ -266,22 +250,18 @@ long __keyctl_dh_compute(struct keyctl_dh_params __user *params,
kpp_request_set_input(req, NULL, 0);
kpp_request_set_output(req, &outsg, outlen);
init_completion(&compl.completion);
kpp_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG |
CRYPTO_TFM_REQ_MAY_SLEEP,
dh_crypto_done, &compl);
crypto_req_done, &compl);
/*
* For DH, generate_public_key and generate_shared_secret are
* the same calculation
*/
ret = crypto_kpp_generate_public_key(req);
if (ret == -EINPROGRESS) {
wait_for_completion(&compl.completion);
ret = compl.err;
if (ret)
goto out6;
}
ret = crypto_wait_req(ret, &compl);
if (ret)
goto out6;
if (kdfcopy) {
/*