other versions
- jessie-backports 4.9.88-1+deb9u1~bpo8+1
- stretch 4.9.144-3
SPANS_BOUNDARY(9) | Internal Functions | SPANS_BOUNDARY(9) |
NAME¶
spans_boundary - Check a packet can be ISA DMA'dSYNOPSIS¶
int
spans_boundary(struct sk_buff * skb);
ARGUMENTS¶
skbThe buffer to check
DESCRIPTION¶
Returns true if the buffer cross a DMA boundary on a PC. The poor thing can only DMA within a 64K block not across the edges of it.AUTHOR¶
Alan Cox <alan@lxorguk.ukuu.org.uk>Author.
COPYRIGHT¶
May 2018 | Kernel Hackers Manual 4.9. |