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: Remove checks for impossible conditions in ipt action

PATCH In review Patrick McHardy 2 participants 3 messages Dec 30, 2004

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#0 lore raw

PATCH 11/17 : Remove checks for impossible conditions in ipt action

Remove checks for impossible conditions in ipt action, same as for gact.

# This is a BitKeeper generated diff -Nru style patch. #
# ChangeSet
# 2004/12/30 02:52:02+01:00 [email protected]
# [PKT_SCHED]: Remove checks for impossible conditions in ipt action
#
# Signed-off-by: Patrick McHardy <[email protected]>
#

# net/sched/ipt.c
#   2004/12/30 02:51:56+01:00 [email protected] +1 -9
#   [PKT_SCHED]: Remove checks for impossible conditions in ipt action
#   
#   Signed-off-by: Patrick McHardy <[email protected]>
# 
diff -Nru a/net/sched/ipt.c b/net/sched/ipt.c
--- a/net/sched/ipt.c	2004-12-30 04:01:42 +01:00
+++ b/net/sched/ipt.c	2004-12-30 04:01:42 +01:00
@@ -104,8 +104,7 @@
 	u32 index = 0;
 	u32 hook = 0;

- if (a == NULL || rta == NULL ||
- rtattr_parse(tb, TCA_IPT_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta)) < 0)
+ if (rtattr_parse(tb, TCA_IPT_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta)) < 0)
return -1;

if (tb[TCA_IPT_INDEX - 1]) {
@@ -243,9 +242,6 @@
struct tcf_ipt *p = PRIV(a, ipt);
struct sk_buff *skb = *pskb;

- if (p == NULL || skb == NULL)
- return -1;
-
spin_lock(&p->lock);

p->tm.lastuse = jiffies;
@@ -293,10 +289,6 @@
unsigned char *b = skb->tail;
struct tcf_ipt *p = PRIV(a, ipt);

- if (p == NULL) {
- printk("BUG: tcf_ipt_dump called with NULL params\n");
- goto rtattr_failure;
- }
/* for simple targets kernel size == user size ** user name = target name
** for foolproof you need to not assume this

#1 lore raw

* Patrick McHardy <[email protected]> 2004-12-30 04:40

Review

Quoted 4 lines
(quoted diff) +1 -2
-	if (a == NULL || rta == NULL ||
-	    rtattr_parse(tb, TCA_IPT_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta)) < 0)
+	if (rtattr_parse(tb, TCA_IPT_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta)) < 0)
 		return -1;

You might want to use rtattr_parse_nested here (see patch 1 of my latest patchset)

if (rtattr_parse_nested(tb, TCA_IPT_MAX, rta) < 0)

Purely cosmetic though. It gives a slightly better hint on what is being done.

#2 lore raw
Quoted 11 lines · Thomas Graf

* Patrick McHardy <[email protected]> 2004-12-30 04:40

Quoted 4 lines
(quoted diff) +1 -2
-	if (a == NULL || rta == NULL ||
-	    rtattr_parse(tb, TCA_IPT_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta)) < 0)
+	if (rtattr_parse(tb, TCA_IPT_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta)) < 0)
		return -1;

You might want to use rtattr_parse_nested here (see patch 1 of my latest patchset)

Quoted 4 lines

if (rtattr_parse_nested(tb, TCA_IPT_MAX, rta) < 0)

Purely cosmetic though. It gives a slightly better hint on what is being done.

We can do this once your changes are merged (I'll review them later today). For now I prefer to leave it this way so I can work on a vanilla tree.

Regards
Patrick