aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorHuang Ying <ying.huang@intel.com>2009-10-19 11:53:06 +0900
committerHerbert Xu <herbert@gondor.apana.org.au>2009-10-19 11:53:06 +0900
commit0e1227d356e9b2fe0500d6cc7084f752040a1e0e (patch)
tree6f059b8e3c31539942ad244e7aadabcb54e8d904 /include
parentcrypto: padlock-sha - Fix stack alignment (diff)
downloadlinux-dev-0e1227d356e9b2fe0500d6cc7084f752040a1e0e.tar.xz
linux-dev-0e1227d356e9b2fe0500d6cc7084f752040a1e0e.zip
crypto: ghash - Add PCLMULQDQ accelerated implementation
PCLMULQDQ is used to accelerate the most time-consuming part of GHASH, carry-less multiplication. More information about PCLMULQDQ can be found at: http://software.intel.com/en-us/articles/carry-less-multiplication-and-its-usage-for-computing-the-gcm-mode/ Because PCLMULQDQ changes XMM state, its usage must be enclosed with kernel_fpu_begin/end, which can be used only in process context, the acceleration is implemented as crypto_ahash. That is, request in soft IRQ context will be defered to the cryptd kernel thread. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include')
-rw-r--r--include/crypto/cryptd.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/crypto/cryptd.h b/include/crypto/cryptd.h
index 2f65a6e8ea4d..1c96b255017c 100644
--- a/include/crypto/cryptd.h
+++ b/include/crypto/cryptd.h
@@ -39,6 +39,7 @@ static inline struct cryptd_ahash *__cryptd_ahash_cast(
struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name,
u32 type, u32 mask);
struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm);
+struct shash_desc *cryptd_shash_desc(struct ahash_request *req);
void cryptd_free_ahash(struct cryptd_ahash *tfm);
#endif