carta
spans_boundary(9)

spans_boundary9

Check a packet can be isa dma'd

Usage

int spans_boundary(struct sk_buff * skb);

Arguments

skb

The buffer to check

Overview

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.

History

  • Debian 9 (Stretch): the text shown here
  • Debian 8 (Jessie)
  • Debian 7 (Wheezy)
  • Debian 6.0 (Squeeze)
  • Debian 5.0 (Lenny)
  • Debian 4.0 (Etch)

Author

Alan Cox <[email protected]>

Author.

From linux-manual-4.9 4.9.228-1 in Debian 9 (Stretch). Parsed by carta from the page's man source.