ich777/linux_media
1
0
Fork 0
mirror of https://github.com/tbsdtv/linux_media.git synced 2025-07-23 04:33:26 +02:00
Code Issues Packages Projects Releases Wiki Activity

crypto: introduce crypto wait for async op

Browse Source 
Invoking a possibly async. crypto op and waiting for completion
while correctly handling backlog processing is a common task
in the crypto API implementation and outside users of it.

This patch adds a generic implementation for doing so in
preparation for using it across the board instead of hand
rolled versions.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
CC: Eric Biggers <ebiggers3@gmail.com>
CC: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gilad Ben-Yossef
2017-10-18 08:00:38 +01:00
committed by Herbert Xu
parent 3d549e325e
commit ada69a1639
2 changed files with 53 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
crypto/api.c
View File

@@ -24,6 +24,7 @@
#include <linux/sched/signal.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/completion.h>
#include "internal.h"
LIST_HEAD(crypto_alg_list);
@@ -595,5 +596,17 @@ int crypto_has_alg(const char *name, u32 type, u32 mask)
}
EXPORT_SYMBOL_GPL(crypto_has_alg);
void crypto_req_done(struct crypto_async_request *req, int err)
{
struct crypto_wait *wait = req->data;
if (err == -EINPROGRESS)
return;
wait->err = err;
complete(&wait->completion);
}
EXPORT_SYMBOL_GPL(crypto_req_done);
MODULE_DESCRIPTION("Cryptographic core API");
MODULE_LICENSE("GPL");