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| author | Gilad Ben-Yossef <gilad@benyossef.com> | 2017-10-18 08:00:38 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-11-03 22:11:18 +0800 |
| commit | ada69a1639eca54ff74d839a6513c43db8d57d70 (patch) | |
| tree | f22353657a65c0b90d9412224ee508898d9c874a /crypto/api.c | |
| parent | 3d549e325e3c7dd294b96720f22cbc39ec2e02e9 (diff) | |
| download | lwn-ada69a1639eca54ff74d839a6513c43db8d57d70.tar.gz lwn-ada69a1639eca54ff74d839a6513c43db8d57d70.zip | |
crypto: introduce crypto wait for async op
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>
Diffstat (limited to 'crypto/api.c')
| -rw-r--r-- | crypto/api.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/crypto/api.c b/crypto/api.c index 941cd4c6c7ec..2a2479d168aa 100644 --- a/crypto/api.c +++ b/crypto/api.c @@ -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"); |