diff options
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 5dce262..18527ef 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1041,29 +1041,6 @@ static int zerocopy_sg_from_iovec(struct sk_buff *skb, const struct iovec *from, return 0; } -static unsigned long iov_pages(const struct iovec *iv, int offset, - unsigned long nr_segs) -{ - unsigned long seg, base; - int pages = 0, len, size; - - while (nr_segs && (offset >= iv->iov_len)) { - offset -= iv->iov_len; - ++iv; - --nr_segs; - } - - for (seg = 0; seg < nr_segs; seg++) { - base = (unsigned long)iv[seg].iov_base + offset; - len = iv[seg].iov_len - offset; - size = ((base & ~PAGE_MASK) + len + ~PAGE_MASK) >> PAGE_SHIFT; - pages += size; - offset = 0; - } - - return pages; -} - /* Get packet from user space buffer */ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, void *msg_control, const struct iovec *iv, |