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[NET]: Clean up comments for sk_chk_filter()

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This removes redundant comments, and moves one comment to a better
location.

Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kris Katterjohn 2006-01-13 14:33:06 -08:00 committed by David S. Miller
parent 46b86a2da0
commit 7b11f69fb5
1 changed files with 3 additions and 7 deletions
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10
net/core/filter.c
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@ -287,7 +287,9 @@ unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int
* no references or jumps that are out of range, no illegal
* instructions, and must end with a RET instruction.
*
* Returns 0 if the rule set is legal or a negative errno code if not.
* All jumps are forward as they are not signed.
*
* Returns 0 if the rule set is legal or -EINVAL if not.
*/
int sk_chk_filter(struct sock_filter *filter, int flen)
{
@ -299,7 +301,6 @@ int sk_chk_filter(struct sock_filter *filter, int flen)
/* check the filter code now */
for (pc = 0; pc < flen; pc++) {
/* all jumps are forward as they are not signed */
ftest = &filter[pc];
/* Only allow valid instructions */
@ -383,11 +384,6 @@ int sk_chk_filter(struct sock_filter *filter, int flen)
}
}
/*
* The program must end with a return. We don't care where they
* jumped within the script (its always forwards) but in the end
* they _will_ hit this.
*/
return (BPF_CLASS(filter[flen - 1].code) == BPF_RET) ? 0 : -EINVAL;
}