[PATCH net v2 0/3] rxrpc: RACK-TLP fixes

[David Howells]

Here are some fixes for AF_RXRPC's RACK-TLP implementation.  It's split
into three patches: the first just fixes the RFC number in comments but has
no actual code changes; the second introduces a new way to count in-flight
packets; the third does the actual fixing, including:

 - Making the "in fast/RTO recovery" flag available to RACK-TLP code after
   the Reorder timer expires.

 - Arming the RTO timer if no other timer is running and there is unacked
   data.

 - Initialising the TLP state in the correct place.

 - Not resetting the xmit timestamp when marking a packet lost.

 - Correctly checking the flight size.

David

The patches can be found here also:

	http://git.kernel.org/cgit/linux/kernel/git/dhowells/linux-fs.git/log/?h=rxrpc-fixes-2

Changes
=======
ver #2)
- Rebased on latest net-next/main.
- Fixed Sashiko-reported bugs[1]:
  - When performing TLP_send_probe() [rfc8985 7.3], don't do backoff.  Note
    that backoff may already have been done by rxrpc_resend().
  - In rxrpc_tlp_calc_pto(), clamp call->peer->pmtud_jumbo to be at least
    1.
  - Added a patch to replace the way in which the number of in-flight
    packets is tracked to avoid estimating using values which aren't all
    updated at the same time.

[1] https://netdev-ai.bots.linux.dev/sashiko/#/patchset/20260925191520.2206700-1-dhowells%40redhat.com

David Howells (3):
  rxrpc: Fix the comments saying RFC8958 to be RFC8985
  rxrpc: Fix counting of in-flight transmitted packets
  rxrpc: Fix RACK-TLP implementation

 include/trace/events/rxrpc.h | 11 ++++-----
 net/rxrpc/ar-internal.h      | 22 ++++--------------
 net/rxrpc/call_event.c       | 13 +++++++++++
 net/rxrpc/input.c            | 15 ++++++------
 net/rxrpc/input_rack.c       | 45 +++++++++++++++++++-----------------
 net/rxrpc/output.c           |  5 ++--
 6 files changed, 56 insertions(+), 55 deletions(-)