From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:40725) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TFniY-0003yF-SM for qemu-devel@nongnu.org; Sun, 23 Sep 2012 11:03:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TFniX-0007xV-Q9 for qemu-devel@nongnu.org; Sun, 23 Sep 2012 11:03:34 -0400 Received: from mx1.redhat.com ([209.132.183.28]:23936) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TFniX-0007xJ-Ht for qemu-devel@nongnu.org; Sun, 23 Sep 2012 11:03:33 -0400 Date: Sun, 23 Sep 2012 17:05:02 +0200 From: "Michael S. Tsirkin" Message-ID: <20120923150502.GA29246@redhat.com> References: <1348411747-29804-1-git-send-email-owasserm@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1348411747-29804-1-git-send-email-owasserm@redhat.com> Subject: Re: [Qemu-devel] [PATCH v4 0/4] nonblocking connect address handling cleanup List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Orit Wasserman Cc: kwolf@redhat.com, aliguori@us.ibm.com, mdroth@linux.vnet.ibm.com, quintela@redhat.com, armbru@redhat.com, qemu-devel@nongnu.org, lcapitulino@redhat.com, pbonzini@redhat.com, akong@redhat.com 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 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