On Wed, 2017-11-01 at 17:10 -0700, Christoph Paasch wrote: > Yes, that looks good to me. Thanks! > > But we still need to clean up the skb in tcp_v4_send_reset and > tcp_v4_send_ack, as the fields (e.g., tcp_skb_cb->seq) have been set when > coming from tcp_v4_rcv.
You might be confused : ip_send_unicast_reply() does not send back the incoming skb. A fresh skb is allocated, then appended/sent. And commit 24a2d43d8886f5a29c did the changes to provide to __ip_options_echo() the proper IPCB header location.
