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| author |   Herbert Xu <herbert@gondor.apana.org.au> | 2025-04-07 18:03:00 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2025-04-16 15:16:20 +0800 |
| commit | 097c432caaa6d91f87732fe991cb08139e31101a (patch) | |
| tree | cbf90c936c17accd824b0f16e4bc7210f6eb02ef /include/crypto/internal/acompress.h | |
| parent | crypto: iaa - Switch to ACOMP_FBREQ_ON_STACK (diff) | |
| download | wireguard-linux-097c432caaa6d91f87732fe991cb08139e31101a.tar.xz wireguard-linux-097c432caaa6d91f87732fe991cb08139e31101a.zip | |
crypto: acomp - Add ACOMP_REQUEST_CLONE
Add a new helper ACOMP_REQUEST_CLONE that will transform a stack
request into a dynamically allocated one if possible, and otherwise
switch it over to the sycnrhonous fallback transform. The intended
usage is:
ACOMP_STACK_ON_REQUEST(req, tfm);
...
err = crypto_acomp_compress(req);
/* The request cannot complete synchronously. */
if (err == -EAGAIN) {
/* This will not fail. */
req = ACOMP_REQUEST_CLONE(req, gfp);
/* Redo operation. */
err = crypto_acomp_compress(req);
}
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto/internal/acompress.h')
| -rw-r--r-- | include/crypto/internal/acompress.h | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/include/crypto/internal/acompress.h b/include/crypto/internal/acompress.h index 8840fd2c1db5..b51d66633935 100644 --- a/include/crypto/internal/acompress.h +++ b/include/crypto/internal/acompress.h @@ -17,12 +17,6 @@ #include <linux/spinlock.h> #include <linux/workqueue_types.h> -#define ACOMP_REQUEST_ON_STACK(name, tfm) \ - char __##name##_req[sizeof(struct acomp_req) + \ - MAX_SYNC_COMP_REQSIZE] CRYPTO_MINALIGN_ATTR; \ - struct acomp_req *name = acomp_request_on_stack_init( \ - __##name##_req, (tfm), 0, true) - #define ACOMP_FBREQ_ON_STACK(name, req) \ char __##name##_req[sizeof(struct acomp_req) + \ MAX_SYNC_COMP_REQSIZE] CRYPTO_MINALIGN_ATTR; \ @@ -245,9 +239,10 @@ static inline struct acomp_req *acomp_fbreq_on_stack_init( char *buf, struct acomp_req *old) { struct crypto_acomp *tfm = crypto_acomp_reqtfm(old); - struct acomp_req *req; + struct acomp_req *req = (void *)buf; - req = acomp_request_on_stack_init(buf, tfm, 0, true); + acomp_request_set_tfm(req, tfm->fb); + req->base.flags = CRYPTO_TFM_REQ_ON_STACK; acomp_request_set_callback(req, acomp_request_flags(old), NULL, NULL); req->base.flags &= ~CRYPTO_ACOMP_REQ_PRIVATE; req->base.flags |= old->base.flags & CRYPTO_ACOMP_REQ_PRIVATE; |