Hi,
On 4/1/2018 6:37 AM, David Miller wrote:
From: Atul Gupta <atul.gupta@xxxxxxxxxxx>
Date: Sat, 31 Mar 2018 21:41:51 +0530
Series for Chelsio Inline TLS driver (chtls)
Series applied, thank you.
Sorry for being late to the party, could you please help answer a few
questions to help me understand better.
1. What happens if someone attempts to set a TCP socket option for a
socket whose TCP stack resides in the TCP offload engine(TOE)? Do you
emulate all Linux socket options? What about IP socket options?
If I follow the code correctly, then the original TCP/IP setsockopt is
called. But, it doesn't change any of the parameters of the TCP/IP
offload engine in hardware.
2. I can't find where is the TLS record sequence number pushed to
hardware. Is that on purpose?
FYI, ignoring this parameter might cause a record sequence number reuse
which breaks the integrity of the AES-GCM TLS ciphersuite.
3. How does a TOE handle Tx only or Rx only?
4. What happens when there is a routing change that redirects traffic to
a different netdev? Is there a software fallback?
5. The TLS socket option is set in the middle of a TCP connection. What
happens to the existing TCP connection and the data that is currently
queued in the TCP write queue?
Thanks,
Boris.
