On Wednesday 10 November 2004 08:01, Subhash Gopinath wrote: > I am using 2.4.27 . 'Wanted to know what pskb_may_pull() in ipgre_rc() of > net/ipv4/ip_gre.c does...Why does it have 16 as its second parameter ? It would help to know something about skbuff in this regard. pskb_may_pull() is used to find out if it is possible to 'pull', i.e, advance the pointer within the skb by the specified number of bytes. The 16 (or whatever) is typically the size of a protocol header. So, the call you are referring to just means to check if there is enough stuff in the skbuff to account for the next protocol header. HTH. -- Regards, Kiran Kumar Immidi -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
