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Reload this Page Cast to tcphdr from sk_buff
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Old 02-27-2014, 08:53 PM   #1
georgewhr
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Registered: Nov 2012
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Cast to tcphdr from sk_buff

I recetnly found an operation that cast sk_buff to tcphdr as below:

tcp = (struct tcphdr *)((sb->data) + (sb->nh.iph->ihl * 4));

Can any body explain how that works? Why that is multiple of 4?
 
  


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