Provided by:
linux-doc-2.6.15_2.6.15-23.39_all 
NAME
skb_padto - pad an skbuff up to a minimal size
SYNOPSIS
struct sk_buff * skb_padto (struct sk_buff * skb, unsigned int len);
ARGUMENTS
skb buffer to pad
len minimal length
DESCRIPTION
Pads up a buffer to ensure the trailing bytes exist and are blanked. If
the buffer already contains sufficient data it is untouched. Returns
the buffer, which may be a replacement for the original, or NULL for
out of memory - in which case the original buffer is still freed.