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| author | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2010-07-21 14:03:58 +0200 |
|---|---|---|
| committer | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2010-07-21 16:40:01 +0200 |
| commit | e7828004e40592c8cffc9235f72440c802905e16 (patch) | |
| tree | c46f4aba9a4f1e8014492cd835fce81d7e07017e /cryptodev_int.h | |
| parent | 56eb45f752baa978a9ea3573faee44857678597d (diff) | |
| download | kernel-crypto-e7828004e40592c8cffc9235f72440c802905e16.tar.gz kernel-crypto-e7828004e40592c8cffc9235f72440c802905e16.tar.xz kernel-crypto-e7828004e40592c8cffc9235f72440c802905e16.zip | |
initial support for userspace data.
Diffstat (limited to 'cryptodev_int.h')
| -rw-r--r-- | cryptodev_int.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/cryptodev_int.h b/cryptodev_int.h index a0d30731d40..d12fd4f80e7 100644 --- a/cryptodev_int.h +++ b/cryptodev_int.h @@ -24,6 +24,17 @@ extern int cryptodev_verbosity; +/* For zero copy */ +int __get_userbuf(uint8_t *addr, uint32_t len, int write, + int pgcount, struct page **pg, struct scatterlist *sg); +void release_user_pages(struct page **pg, int pagecount); + +/* last page - first page + 1 */ +#define PAGECOUNT(buf, buflen) \ + ((((unsigned long)(buf + buflen - 1) & PAGE_MASK) >> PAGE_SHIFT) - \ + (((unsigned long) buf & PAGE_MASK) >> PAGE_SHIFT) + 1) + + struct cipher_data { int init; /* 0 uninitialized */ |