diff options
Diffstat (limited to 'crypto/userspace/cryptodev_main.c')
| -rw-r--r-- | crypto/userspace/cryptodev_main.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/crypto/userspace/cryptodev_main.c b/crypto/userspace/cryptodev_main.c index 2a0503c3154..0316a74dbb9 100644 --- a/crypto/userspace/cryptodev_main.c +++ b/crypto/userspace/cryptodev_main.c @@ -495,7 +495,7 @@ __crypto_run_std(struct csession *ses_ptr, struct crypt_op *cop) #ifndef DISABLE_ZCOPY -void release_user_pages(struct page **pg, int pagecount) +static void release_user_pages(struct page **pg, int pagecount) { while (pagecount--) { if (!PageReserved(pg[pagecount])) @@ -504,11 +504,16 @@ 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) + /* offset of buf in it's first page */ #define PAGEOFFSET(buf) ((unsigned long)buf & ~PAGE_MASK) /* fetch the pages addr resides in into pg and initialise sg with them */ -int __get_userbuf(uint8_t *addr, uint32_t len, int write, +static int __get_userbuf(uint8_t *addr, uint32_t len, int write, int pgcount, struct page **pg, struct scatterlist *sg) { int ret, pglen, i = 0; |