Copy bits from skb to kernel buffer
int skb_copy_bits(const struct sk_buff * skb, int offset, void * to, int len);
skb
source skb
offset
offset in source
to
destination buffer
len
number of bytes to copy
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.