From: Xie He <xie.he.0...@gmail.com> Date: Fri, 3 Jul 2020 22:12:46 -0700
> When transmitting data from upper layers or from AF_PACKET sockets, > this driver will first remove a pseudo header of 1 byte, > then the lapb module will prepend the LAPB header of 2 or 3 bytes, > then this driver will prepend a length field of 2 bytes, > then the underlying Ethernet device will prepend its own header. Please add something like this above text to a comment: > @@ -324,6 +323,8 @@ static int lapbeth_new_device(struct net_device *dev) > if (!ndev) > goto out; > > + ndev->hard_header_len = -1 + 3 + 2 + dev->hard_header_len; > + Above this new line so that someone reading the code can understand these magic numbers and what they mean. Thank you.
