centos man page for skb_copy_bits

SKB_COPY_BITS(9)						 Linux Networking						  SKB_COPY_BITS(9)

NAME
       skb_copy_bits - copy bits from skb to kernel buffer

SYNOPSIS
       int skb_copy_bits(const struct sk_buff * skb, int offset, void * to, int len);

ARGUMENTS
       skb
	   source skb

       offset
	   offset in source

       to
	   destination buffer

       len
	   number of bytes to copy

DESCRIPTION
       Copy the specified number of bytes from the source skb to the destination buffer.

       CAUTION ! : If its prototype is ever changed, check arch/{*}/net/{*}.S files, since it is called from BPF assembly code.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							  SKB_COPY_BITS(9)