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