If you want any data to be available at next host, the data must be transmitted in packet. Regards Mohanlal ----- Original Message ----- From: "bunty" <bunty123_4@rediffmail.com> To: "mohanlal jangir" <mohanlal@samsung.com> Cc: <kernelnewbies@nl.linux.org>; "omanakuttan" <omanakuttan@tataelxsi.co.in> Sent: Thursday, April 15, 2004 8:30 PM Subject: Re: Re: Basic understanding about sk_buff packet handling hello, Thanks for ur reply that relaxes me that i can do that. Actually what i want i told u that to add 2 four bytes fields of my own of each packet. So as per ur suggestion i can use it in cb varialble. Now what i want to know Whether kernel passes whole skb or only packet with data and headers. cause as part of my project i want those fields at next host to recalculate the checksum of my own on data only. so those fields should be accessible to me at next host. can it be possible? Parag. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/