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authorHerbert Xu <herbert@gondor.apana.org.au>2015-05-21 15:10:59 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2015-05-22 11:25:50 +0800
commitfc42bcba97bae738f905b83741134a63af7e6c02 (patch)
tree8ace4b3690395cd811f3cd63a96b77e066e4cb5f /include/crypto
parent66d948e732f665c905678d810833d4f0a5071537 (diff)
crypto: scatterwalk - Add scatterwalk_ffwd helper
This patch adds the scatterwalk_ffwd helper which can create an SG list that starts in the middle of an existing SG list. The new list may either be part of the existing list or be a chain that latches onto part of the existing list. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
-rw-r--r--include/crypto/scatterwalk.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/crypto/scatterwalk.h b/include/crypto/scatterwalk.h
index 20e4226a2e14..96670e7e7c14 100644
--- a/include/crypto/scatterwalk.h
+++ b/include/crypto/scatterwalk.h
@@ -102,4 +102,8 @@ void scatterwalk_map_and_copy(void *buf, struct scatterlist *sg,
int scatterwalk_bytes_sglen(struct scatterlist *sg, int num_bytes);
+struct scatterlist *scatterwalk_ffwd(struct scatterlist dst[2],
+ struct scatterlist *src,
+ unsigned int len);
+
#endif /* _CRYPTO_SCATTERWALK_H */

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