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Re: [Qemu-devel] [PATCH v4 0/4] nonblocking connect address handling cle
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH v4 0/4] nonblocking connect address handling cleanup |
Date: |
Sun, 23 Sep 2012 17:05:02 +0200 |
On Sun, Sep 23, 2012 at 04:49:03PM +0200, Orit Wasserman wrote:
> Changes from v3:
> - add missing parenthesis QEMU_SOCKET_RC_INPROGRESS macro
> - remove "block" from dummy_opts
> - remove in_progress from external API (inet_connect_opts and
> inet_nonblocking_connect)
> - Allocate ConnectState inside inet_connect_opts, this make the
> structure internal to qemu-sockets.c
> - fix migrate_fd_cleanup to handle invalid fd.
>
> Changes from v2:
> - remove the use of getnameinfo
> - remove errp for inet_connect_addr
> - remove QemuOpt "block"
> - fix errors in wait_for_connect
> - pass ConnectState as a parameter to allow concurrent connect ops
>
> getaddrinfo can give us a list of addresses, but we only try to
> connect to the first one. If that fails we never proceed to
> the next one. This is common on desktop setups that often have ipv6
> configured but not actually working.
> A simple way to reproduce the problem is migration:
> for the destination use -incoming tcp:0:4444, run migrate -d
> tcp:localhost:4444
> migration will fail on hosts that have both IPv4 and IPV6 address for
> localhost.
>
> To fix this, refactor address resolution code and make
> inet_nonblocking_connect
> retry connection with a different address.
>
> Michael S. Tsirkin (1):
> Refactor inet_connect_opts function
>
> Orit Wasserman (3):
> Separate inet_connect into inet_connect (blocking) and
> inet_nonblocking_connect
> Fix address handling in inet_nonblocking_connect
> Clear handler only for valid fd
For the series:
Acked-by: Michael S. Tsirkin <address@hidden>
This fixes regression in 1.2 so should go on a stable branch too I
guess.
> migration-tcp.c | 37 ++------
> migration.c | 3 +-
> nbd.c | 2 +-
> qemu-char.c | 2 +-
> qemu-sockets.c | 246 +++++++++++++++++++++++++++++++++++++++---------------
> qemu_socket.h | 45 ++++++++++-
> ui/vnc.c | 2 +-
> 7 files changed, 233 insertions(+), 104 deletions(-)
>
> --
> 1.7.7.6
- [Qemu-devel] [PATCH v4 3/4] Fix address handling in inet_nonblocking_connect, (continued)
Re: [Qemu-devel] [PATCH v4 0/4] nonblocking connect address handling cleanup,
Michael S. Tsirkin <=
Re: [Qemu-devel] [PATCH v4 0/4] nonblocking connect address handling cleanup, Markus Armbruster, 2012/09/24