Hi,
in the 2.4 net/ipv4/netfilter directory various ways are used to
check whether an skb needs to be copied before it is modified. At
least three ways are used:
if (skb_shared(skb) || skb_cloned(skb))
if (skb_cloned(skb) && !skb->sk)
if (skb_cloned(skb))
And at the places where the skb is actually copied some of them do:
if ((oldskb)->sk)
skb_set_owner_w(newskb, oldskb->sk);
while some of them do not.
What is the correct way to know if an skb needs to be copied before
modified, and what should be done after a copy takes place?
//Marcus
--
---------------------------------------+--------------------------
Marcus Sundberg <[EMAIL PROTECTED]> | Firewalls with SIP & NAT
Software Developer, Ingate Systems AB | http://www.ingate.com/
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