[PATCH v2 0/4] Fix race condition while closing spliced connections

[David Gibson <david@gibson.dropbear.id.au>]

Fix bug 202, where a race condition could cause connections to be
incorrectly reset in certain circumstances.

Patch 2/4 is the bug fix proper.  1/4 improves error reporting and
debugging messages in the vicinity.  Patches 3..4/4 are some small
cleanups I noticed in the area while working on the fix.

Link: https://bugs.passt.top/show_bug.cgi?id=202

v2:
 * Formatting and comment fixes, per Stefano's review
 * Dropped patches 5 & 6 for now.  I still think they're worthwhile,
   but are closely related to other oddities that need some work.  I
   didn't want to delay the bugfix itself.

David Gibson (4):
  tcp_splice: Improve error reporting
  tcp_splice: Avoid missing EOF recognition while forwarding
  tcp_splice: Clean up flow control path for splice forwarding
  tcp_splice: Simplify tracking of read/written bytes

 flow.h       |   7 ++
 log.h        |  19 +++---
 passt.c      |   2 +-
 tcp_conn.h   |   6 +-
 tcp_splice.c | 185 ++++++++++++++++++++++++++++++---------------------
 tcp_splice.h |   2 +-
 6 files changed, 129 insertions(+), 92 deletions(-)

-- 
2.54.0