struct scatterlist *sg, unsigned int nsg)
{
unsigned int i;
-
+
for (i = 0; i < nsg; i++) {
- char *p = crypto_kmap(sg[i].page, 0) + sg[i].offset;
- tfm->__crt_alg->cra_digest.dia_update(crypto_tfm_ctx(tfm),
- p, sg[i].length);
- crypto_kunmap(p, 0);
- crypto_yield(tfm);
+
+ struct page *pg = sg[i].page;
+ unsigned int offset = sg[i].offset;
+ unsigned int l = sg[i].length;
+
+ do {
+ unsigned int bytes_from_page = min(l, ((unsigned int)
+ (PAGE_SIZE)) -
+ offset);
+ char *p = crypto_kmap(pg, 0) + offset;
+
+ tfm->__crt_alg->cra_digest.dia_update
+ (crypto_tfm_ctx(tfm), p,
+ bytes_from_page);
+ crypto_kunmap(p, 0);
+ crypto_yield(tfm);
+ offset = 0;
+ pg++;
+ l -= bytes_from_page;
+ } while (l > 0);
}
}