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From: Stefano Brivio <sbrivio@redhat.com>
To: passt-dev@passt.top
Cc: Laurent Vivier <lvivier@redhat.com>,
	David Gibson <david@gibson.dropbear.id.au>
Subject: [PATCH v2 0/8] Draft, incomplete series introducing state migration
Date: Wed, 29 Jan 2025 00:39:32 +0100	[thread overview]
Message-ID: <20250128233940.1235855-1-sbrivio@redhat.com> (raw)

A bit more complete than the previous iteration: this adds fixes,
interfaces for the TCP_REPAIR helper, and the first (working) basic
source pre-migration handler, dumping (socket-side) sequence numbers
into the flow table.

v2:

- drop 3/7, (7-bit hole in tcp_splice_conn), not really relevant

- handle EOF (ENODATA) in read_remainder() and read_all_buf()

- fix definition of reverse-endianness magic, and version match
  in migrate_target_read_header()

- pass context to the handlers, not an arbitrary data pointer,
  as that's kind of useless

- change passt-repair protocol to single-byte command, exit on
  EOF instead of special command

- add interface and infrastructure for passt-repair

- add basic pre-migration source handler dumping sequence numbers
  once sockets are switched to repair mode by helper

Stefano Brivio (8):
  icmp, udp: Pad time_t timestamp to 64-bit to ease state migration
  flow, flow_table: Pad flow table entries to 128 bytes, hash entries to
    32 bits
  flow_table: Use size in extern declaration for flowtab
  util: Add read_remainder() and read_all_buf()
  Introduce facilities for guest migration on top of vhost-user
    infrastructure
  Introduce passt-repair
  Add interfaces and configuration bits for passt-repair
  flow, tcp: Basic pre-migration source handler to dump sequence numbers

 Makefile       |  24 +++--
 conf.c         |  46 ++++++++-
 epoll_type.h   |   4 +
 flow.c         |  43 ++++++++
 flow.h         |  19 ++--
 flow_table.h   |  15 ++-
 icmp_flow.h    |   6 +-
 migrate.c      | 265 +++++++++++++++++++++++++++++++++++++++++++++++++
 migrate.h      |  88 ++++++++++++++++
 passt-repair.c | 117 ++++++++++++++++++++++
 passt.1        |  11 ++
 passt.c        |  11 +-
 passt.h        |   7 ++
 repair.c       | 192 +++++++++++++++++++++++++++++++++++
 repair.h       |  16 +++
 tap.c          |  65 +-----------
 tcp.c          |  56 +++++++++++
 tcp_conn.h     |   5 +
 udp_flow.h     |   6 +-
 util.c         | 142 ++++++++++++++++++++++++++
 util.h         |   3 +
 vu_common.c    | 124 +++++++++++++++--------
 vu_common.h    |   2 +-
 23 files changed, 1136 insertions(+), 131 deletions(-)
 create mode 100644 migrate.c
 create mode 100644 migrate.h
 create mode 100644 passt-repair.c
 create mode 100644 repair.c
 create mode 100644 repair.h

-- 
2.43.0


             reply	other threads:[~2025-01-28 23:39 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-28 23:39 Stefano Brivio [this message]
2025-01-28 23:39 ` [PATCH v2 1/8] icmp, udp: Pad time_t timestamp to 64-bit to ease state migration Stefano Brivio
2025-01-29  1:34   ` David Gibson
2025-01-28 23:39 ` [PATCH v2 2/8] flow, flow_table: Pad flow table entries to 128 bytes, hash entries to 32 bits Stefano Brivio
2025-01-29  1:35   ` David Gibson
2025-01-28 23:39 ` [PATCH v2 3/8] flow_table: Use size in extern declaration for flowtab Stefano Brivio
2025-01-28 23:39 ` [PATCH v2 4/8] util: Add read_remainder() and read_all_buf() Stefano Brivio
2025-01-29  1:37   ` David Gibson
2025-01-28 23:39 ` [PATCH v2 5/8] Introduce facilities for guest migration on top of vhost-user infrastructure Stefano Brivio
2025-01-29  5:41   ` David Gibson
2025-01-29  8:46     ` Stefano Brivio
2025-01-30  1:28       ` David Gibson
2025-01-28 23:39 ` [PATCH v2 6/8] Introduce passt-repair Stefano Brivio
2025-01-28 23:39 ` [PATCH v2 7/8] Add interfaces and configuration bits for passt-repair Stefano Brivio
2025-01-29  6:09   ` David Gibson
2025-01-29  8:46     ` Stefano Brivio
2025-01-30  1:33       ` David Gibson
2025-01-28 23:39 ` [PATCH v2 8/8] flow, tcp: Basic pre-migration source handler to dump sequence numbers Stefano Brivio
2025-01-29  6:15   ` David Gibson
2025-01-29  8:46     ` Stefano Brivio

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