.TH "spans_boundary" 9 "spans_boundary" "25 May 1998" "Kernel Hacker's Manual" LINUX
.SH NAME
spans_boundary \-  Check a packet can be ISA DMA'd
.SH SYNOPSIS
.B "int" spans_boundary
.BI "(struct sk_buff *" skb ");"
.SH ARGUMENTS
.IP "skb" 12
 The buffer to check
.SH "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.