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ieee1394: eth1394: clean up fragment_overlap

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offset > fi->offset + fi->len - 1  ==  !(offset < fi->offset + fi->len)
offset + len - 1 < fi->offset      ==  !(offset + len > fi->offset)
!(A || B)  ==  (!A && !B)

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2007-04-02 02:21:46 +02:00
parent 01590d20b4
commit 2e2173df68
1 changed files with 4 additions and 4 deletions
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8
drivers/ieee1394/eth1394.c
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@ -867,12 +867,12 @@ static u16 ether1394_parse_encap(struct sk_buff *skb, struct net_device *dev,
static int fragment_overlap(struct list_head *frag_list, int offset, int len)
{
struct fragment_info *fi;
int end = offset + len;
list_for_each_entry(fi, frag_list, list) {
if ( ! ((offset > (fi->offset + fi->len - 1)) ||
((offset + len - 1) < fi->offset)))
list_for_each_entry(fi, frag_list, list)
if (offset < fi->offset + fi->len && end > fi->offset)
return 1;
}
return 0;
}