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[PATCH PKT_SCHED 10/22]: tc actions: remove checks for impossible condit

To: jamal <hadi@xxxxxxxxxx>
Subject: [PATCH PKT_SCHED 10/22]: tc actions: remove checks for impossible conditions
From: Patrick McHardy <kaber@xxxxxxxxx>
Date: Mon, 10 Jan 2005 20:37:59 +0100
Cc: Maillist netdev <netdev@xxxxxxxxxxx>
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.3) Gecko/20041008 Debian/1.7.3-5

# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2005/01/09 23:37:54+01:00 kaber@xxxxxxxxxxxx 
#   [PKT_SCHED]: tc actions: remove checks for impossible conditions
#   
#   Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
# 
# net/sched/police.c
#   2005/01/09 23:37:48+01:00 kaber@xxxxxxxxxxxx +0 -17
#   [PKT_SCHED]: tc actions: remove checks for impossible conditions
#   
#   Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
# 
# net/sched/pedit.c
#   2005/01/09 23:37:48+01:00 kaber@xxxxxxxxxxxx +1 -11
#   [PKT_SCHED]: tc actions: remove checks for impossible conditions
#   
#   Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
# 
# net/sched/mirred.c
#   2005/01/09 23:37:48+01:00 kaber@xxxxxxxxxxxx +3 -20
#   [PKT_SCHED]: tc actions: remove checks for impossible conditions
#   
#   Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
# 
# net/sched/ipt.c
#   2005/01/09 23:37:48+01:00 kaber@xxxxxxxxxxxx +1 -8
#   [PKT_SCHED]: tc actions: remove checks for impossible conditions
#   
#   Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
# 
# net/sched/gact.c
#   2005/01/09 23:37:48+01:00 kaber@xxxxxxxxxxxx +1 -12
#   [PKT_SCHED]: tc actions: remove checks for impossible conditions
#   
#   Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
# 
diff -Nru a/net/sched/gact.c b/net/sched/gact.c
--- a/net/sched/gact.c  2005-01-10 06:22:25 +01:00
+++ b/net/sched/gact.c  2005-01-10 06:22:25 +01:00
@@ -85,7 +85,7 @@
        if (rtattr_parse(tb, TCA_GACT_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta)) < 0)
                return -1;
 
-       if (a == NULL || tb[TCA_GACT_PARMS - 1] == NULL) {
+       if (tb[TCA_GACT_PARMS - 1] == NULL) {
                printk("BUG: tcf_gact_init called with NULL params\n");
                return -1;
        }
@@ -140,12 +140,6 @@
        struct sk_buff *skb = *pskb;
        int action = TC_ACT_SHOT;
 
-       if (p == NULL) {
-               if (net_ratelimit())
-                       printk("BUG: tcf_gact called with NULL params\n");
-               return -1;
-       }
-
        spin_lock(&p->lock);
 #ifdef CONFIG_GACT_PROB
        if (p->ptype && gact_rand[p->ptype] != NULL)
@@ -172,11 +166,6 @@
        struct tc_gact opt;
        struct tcf_gact *p = PRIV(a, gact);
        struct tcf_t t;
-
-       if (p == NULL) {
-               printk("BUG: tcf_gact_dump called with NULL params\n");
-               goto rtattr_failure;
-       }
 
        opt.index = p->index;
        opt.refcnt = p->refcnt - ref;
diff -Nru a/net/sched/ipt.c b/net/sched/ipt.c
--- a/net/sched/ipt.c   2005-01-10 06:22:25 +01:00
+++ b/net/sched/ipt.c   2005-01-10 06:22:25 +01:00
@@ -96,7 +96,7 @@
        u32 index = 0;
        u32 hook = 0;
 
-       if (a == NULL || rta == NULL ||
+       if (rta == NULL ||
            rtattr_parse(tb, TCA_IPT_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta)) < 0)
                return -1;
 
@@ -238,9 +238,6 @@
        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;
@@ -288,10 +285,6 @@
        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
diff -Nru a/net/sched/mirred.c b/net/sched/mirred.c
--- a/net/sched/mirred.c        2005-01-10 06:22:25 +01:00
+++ b/net/sched/mirred.c        2005-01-10 06:22:25 +01:00
@@ -90,7 +90,7 @@
                return -1;
        }
 
-       if (a == NULL || tb[TCA_MIRRED_PARMS - 1] == NULL) {
+       if (tb[TCA_MIRRED_PARMS - 1] == NULL) {
                DPRINTK("BUG: tcf_mirred_init called with NULL params\n");
                return -1;
        }
@@ -169,27 +169,15 @@
        struct sk_buff *skb = *pskb;
        u32 at = G_TC_AT(skb->tc_verd);
 
-       if (a == NULL) {
-               if (net_ratelimit())
-                       printk("BUG: tcf_mirred called with NULL action!\n");
-               return -1;
-       }
-
-       if (p == NULL) {
-               if (net_ratelimit())
-                       printk("BUG: tcf_mirred called with NULL params\n");
-               return -1;
-       }
-
        spin_lock(&p->lock);
 
        dev = p->dev;
        p->tm.lastuse = jiffies;
 
-       if (dev == NULL || !(dev->flags&IFF_UP) ) {
+       if (!(dev->flags&IFF_UP) ) {
                if (net_ratelimit())
                        printk("mirred to Houston: device %s is gone!\n",
-                              dev ? dev->name : "");
+                              dev->name);
 bad_mirred:
                if (skb2 != NULL)
                        kfree_skb(skb2);
@@ -236,11 +224,6 @@
        struct tc_mirred opt;
        struct tcf_mirred *p = PRIV(a, mirred);
        struct tcf_t t;
-
-       if (p == NULL) {
-               printk("BUG: tcf_mirred_dump called with NULL params\n");
-               goto rtattr_failure;
-       }
 
        opt.index = p->index;
        opt.action = p->action;
diff -Nru a/net/sched/pedit.c b/net/sched/pedit.c
--- a/net/sched/pedit.c 2005-01-10 06:22:25 +01:00
+++ b/net/sched/pedit.c 2005-01-10 06:22:25 +01:00
@@ -65,7 +65,7 @@
        if (rtattr_parse(tb, TCA_PEDIT_MAX, RTA_DATA(rta),
                         RTA_PAYLOAD(rta)) < 0)
                return -1;
-       if (a == NULL || tb[TCA_PEDIT_PARMS - 1] == NULL) {
+       if (tb[TCA_PEDIT_PARMS - 1] == NULL) {
                printk("BUG: tcf_pedit_init called with NULL params\n");
                return -1;
        }
@@ -113,11 +113,6 @@
        int i, munged = 0;
        u8 *pptr;
 
-       if (p == NULL) {
-               printk("BUG: tcf_pedit called with NULL params\n");
-               return -1; /* change to something symbolic */
-       }
-
        if (!(skb->tc_verd & TC_OK2MUNGE)) {
                /* should we set skb->cloned? */
                if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
@@ -189,11 +184,6 @@
        struct tcf_t t;
        int s; 
                
-       if (p == NULL) {
-               printk("BUG: tcf_pedit_dump called with NULL params\n");
-               goto rtattr_failure;
-       }
-
        s = sizeof(*opt) + p->nkeys * sizeof(struct tc_pedit_key);
 
        /* netlink spinlocks held above us - must use ATOMIC */
diff -Nru a/net/sched/police.c b/net/sched/police.c
--- a/net/sched/police.c        2005-01-10 06:22:25 +01:00
+++ b/net/sched/police.c        2005-01-10 06:22:25 +01:00
@@ -170,13 +170,6 @@
        struct tc_police *parm;
        struct tcf_police *p;
 
-       if (a == NULL) {
-               if (net_ratelimit())
-                       printk("BUG: tcf_police_locate called with NULL "
-                              "params\n");
-               return -1;
-       }
-
        if (rtattr_parse(tb, TCA_POLICE_MAX, RTA_DATA(rta),
                         RTA_PAYLOAD(rta)) < 0)
                return -1;
@@ -290,11 +283,6 @@
        long toks;
        long ptoks = 0;
 
-       if (p == NULL) {
-               printk("BUG: tcf_police called with NULL params\n");
-               return -1;
-       }
-
        spin_lock(&p->lock);
 
        p->bstats.bytes += skb->len;
@@ -349,11 +337,6 @@
        unsigned char    *b = skb->tail;
        struct tc_police opt;
        struct tcf_police *p = PRIV(a);
-
-       if (p == NULL) {
-               printk("BUG: tcf_police_dump called with NULL params\n");
-               goto rtattr_failure;
-       }
 
        opt.index = p->index;
        opt.action = p->action;
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