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yaml
---
r: 69399
b: refs/heads/master
c: f697c3e
h: refs/heads/master
i:
  69397: 2e5b2bb
  69395: 9beab51
  69391: abe9a19
v: v3
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Herbert Xu authored and David S. Miller committed Oct 15, 2007
1 parent 320bf25 commit f2622d5
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Showing 2 changed files with 41 additions and 29 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 776c729e8d91b2740583a2169678f2d3f383458b
refs/heads/master: f697c3e8b35c18b2698d64137c0fa84b0cdb3d10
68 changes: 40 additions & 28 deletions trunk/net/core/dev.c
Original file line number Diff line number Diff line change
Expand Up @@ -1949,27 +1949,51 @@ static int ing_filter(struct sk_buff *skb)
struct Qdisc *q;
struct net_device *dev = skb->dev;
int result = TC_ACT_OK;
u32 ttl = G_TC_RTTL(skb->tc_verd);

if (dev->qdisc_ingress) {
__u32 ttl = (__u32) G_TC_RTTL(skb->tc_verd);
if (MAX_RED_LOOP < ttl++) {
printk(KERN_WARNING "Redir loop detected Dropping packet (%d->%d)\n",
skb->iif, skb->dev->ifindex);
return TC_ACT_SHOT;
}
if (MAX_RED_LOOP < ttl++) {
printk(KERN_WARNING
"Redir loop detected Dropping packet (%d->%d)\n",
skb->iif, dev->ifindex);
return TC_ACT_SHOT;
}

skb->tc_verd = SET_TC_RTTL(skb->tc_verd,ttl);
skb->tc_verd = SET_TC_RTTL(skb->tc_verd, ttl);
skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_INGRESS);

skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_INGRESS);
spin_lock(&dev->ingress_lock);
if ((q = dev->qdisc_ingress) != NULL)
result = q->enqueue(skb, q);
spin_unlock(&dev->ingress_lock);

return result;
}

spin_lock(&dev->ingress_lock);
if ((q = dev->qdisc_ingress) != NULL)
result = q->enqueue(skb, q);
spin_unlock(&dev->ingress_lock);
static inline struct sk_buff *handle_ing(struct sk_buff *skb,
struct packet_type **pt_prev,
int *ret, struct net_device *orig_dev)
{
if (!skb->dev->qdisc_ingress)
goto out;

if (*pt_prev) {
*ret = deliver_skb(skb, *pt_prev, orig_dev);
*pt_prev = NULL;
} else {
/* Huh? Why does turning on AF_PACKET affect this? */
skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
}

return result;
switch (ing_filter(skb)) {
case TC_ACT_SHOT:
case TC_ACT_STOLEN:
kfree_skb(skb);
return NULL;
}

out:
skb->tc_verd = 0;
return skb;
}
#endif

Expand Down Expand Up @@ -2021,21 +2045,9 @@ int netif_receive_skb(struct sk_buff *skb)
}

#ifdef CONFIG_NET_CLS_ACT
if (pt_prev) {
ret = deliver_skb(skb, pt_prev, orig_dev);
pt_prev = NULL; /* noone else should process this after*/
} else {
skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
}

ret = ing_filter(skb);

if (ret == TC_ACT_SHOT || (ret == TC_ACT_STOLEN)) {
kfree_skb(skb);
skb = handle_ing(skb, &pt_prev, &ret, orig_dev);
if (!skb)
goto out;
}

skb->tc_verd = 0;
ncls:
#endif

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