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2015-09-11trivial: remove trailing newline from error_reportJohn Snow1-2/+2
Minor cleanup. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-07-20net: Flush queued packets when guest resumesFam Zheng1-7/+12
Since commit 6e99c63 "net/socket: Drop net_socket_can_send" and friends, net queues need to be explicitly flushed after qemu_can_send_packet() returns false, because the netdev side will disable the polling of fd. This fixes the case of "cont" after "stop" (or migration). Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1436232067-29144-1-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-07-20socket: pass correct size in net_socket_send()Jason Wang1-1/+1
We should pass the size of packet instead of the remaining to qemu_send_packet_async(). Fixes: 6e99c631f116221d169ea53953d91b8aa74d297a ("net/socket: Drop net_socket_can_send") Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Message-id: 1436259656-24263-1-git-send-email-jasowang@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-07-20Revert "vhost-user: add multi queue support"Michael S. Tsirkin1-24/+13
This reverts commit 830d70db692e374b55555f4407f96a1ceefdcc97. The interface isn't fully backwards-compatible, which is bad. Let's redo this properly after 2.4. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-24net: simplify net_client_init1()Stefan Hajnoczi1-22/+16
Drop the union and move the hubport creation into the !is_netdev case. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 1432743412-15943-6-git-send-email-stefanha@redhat.com
2015-06-24net: drop if expression that is always trueStefan Hajnoczi1-17/+14
Both is_netdev and !is_netdev paths already check that net_client_init_func[opts->kind] is non-NULL so there is no need for the if statement. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 1432743412-15943-5-git-send-email-stefanha@redhat.com
2015-06-24net: raise an error if -net type is invalidStefan Hajnoczi1-0/+11
When a -net type is used that was not compiled into the binary there should be an error message. Note the special case for -net none, which is a no-op. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 1432743412-15943-4-git-send-email-stefanha@redhat.com
2015-06-24net: replace net_client_init1() netdev whitelist with blacklistStefan Hajnoczi1-25/+3
It's cumbersome to keep the whitelist up-to-date. New netdev backends should most likely be allowed so a blacklist makes more sense than a whitelist. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 1432743412-15943-3-git-send-email-stefanha@redhat.com
2015-06-24net: add missing "netmap" to host_net_devices[]Stefan Hajnoczi1-0/+3
Although hmp-commands.hx lists "netmap" as a valid host_net_add type, the command rejects it because it's missing from the list. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1432743412-15943-2-git-send-email-stefanha@redhat.com
2015-06-22Include monitor/monitor.h exactly where neededMarkus Armbruster1-1/+0
In particular, don't include it into headers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22Include qapi/qmp/qerror.h exactly where neededMarkus Armbruster1-0/+1
In particular, don't include it into headers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qerror: Move #include out of qerror.hMarkus Armbruster2-0/+2
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qmp: Wean off qerror_report()Markus Armbruster1-10/+6
The traditional QMP command handler interface int qmp_FOO(Monitor *mon, const QDict *params, QObject **ret_data); doesn't provide for returning an Error object. Instead, the handler is expected to stash it in the monitor with qerror_report(). When we rebased QMP on top of QAPI, we didn't change this interface. Instead, commit 776574d introduced "middle mode" as a temporary aid for converting existing QMP commands to QAPI one by one. More than three years later, we're still using it. Middle mode has two effects: * Instead of the native input marshallers static void qmp_marshal_input_FOO(QDict *, QObject **, Error **) it generates input marshallers conforming to the traditional QMP command handler interface. * It suppresses generation of code to register them with qmp_register_command() This permits giving them internal linkage. As long as we need qmp-commands.hx, we can't use the registry behind qmp_register_command(), so the latter has to stay for now. The former has to go to get rid of qerror_report(). Changing all QMP commands to fit the QAPI mold in one go was impractical back when we started, but by now there are just a few stragglers left: do_qmp_capabilities(), qmp_qom_set(), qmp_qom_get(), qmp_object_add(), qmp_netdev_add(), do_device_add(). Switch middle mode to generate native input marshallers, and adapt the stragglers. Simplifies both the monitor code and the stragglers. Rename do_qmp_capabilities() to qmp_capabilities(), and do_device_add() to qmp_device_add, because that's how QMP command handlers are named today. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qerror: Clean up QERR_ macros to expand into a single stringMarkus Armbruster1-6/+6
These macros expand into error class enumeration constant, comma, string. Unclean. Has been that way since commit 13f59ae. The error class is always ERROR_CLASS_GENERIC_ERROR since the previous commit. Clean up as follows: * Prepend every use of a QERR_ macro by ERROR_CLASS_GENERIC_ERROR, and delete it from the QERR_ macro. No change after preprocessing. * Rewrite error_set(ERROR_CLASS_GENERIC_ERROR, ...) into error_setg(...). Again, no change after preprocessing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qerror: Eliminate QERR_DEVICE_NOT_FOUNDMarkus Armbruster1-2/+4
Error classes other than ERROR_CLASS_GENERIC_ERROR should not be used in new code. Hiding them in QERR_ macros makes new uses hard to spot. Fortunately, there's just one such macro left. Eliminate it with this coccinelle semantic patch: @@ expression EP, E; @@ -error_set(EP, QERR_DEVICE_NOT_FOUND, E) +error_set(EP, ERROR_CLASS_DEVICE_NOT_FOUND, "Device '%s' not found", E) Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22QemuOpts: Wean off qerror_report_err()Markus Armbruster1-2/+3
qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-19Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell11-2/+122
virtio, pci fixes, enhancements Most notably this includes virtio cross-endian patches. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Fri Jun 19 11:18:05 2015 BST using RSA key ID D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" * remotes/mst/tags/for_upstream: vhost: enable vhost without without MSI-X pci: Don't register a specialized 'config_write' if default behavior is intended hw/core: rebase sysbus_get_fw_dev_path() to g_strdup_printf() vhost_net: re-enable when cross endian vhost-net: tell tap backend about the vnet endianness tap: fix non-linux build tap: add VNET_LE/VNET_BE operations vhost: set vring endianness for legacy virtio virtio: introduce virtio_legacy_is_cross_endian() linux-headers: sync vhost.h vhost-user: part of virtio Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-19vhost: enable vhost without without MSI-XPankaj Gupta2-2/+0
We use vhostforce to enable vhost even if Guests don't have MSI-X support and we fall back to QEMU virtio-net. This gives a very small performance gain, but the disadvantage is that guest now controls which virtio code is running (qemu or vhost) so our attack surface is doubled. This patch will enable vhost unconditionally whenever it's requested. For compatibility, enable vhost when vhostforce is set, as well. Signed-off-by: Pankaj Gupta <pagupta@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Jason Wang <jasowang@redhat.com>
2015-06-19tap: fix non-linux buildMichael S. Tsirkin5-0/+50
tap_fd_set_vnet_le/tap_fd_set_vnet_be was missing, fix it up. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
2015-06-17tap: add VNET_LE/VNET_BE operationsGreg Kurz5-0/+72
The linux tap and macvtap backends can be told to parse vnet headers according to little or big endian. This is done through the TUNSETVNETLE and TUNSETVNETBE ioctls. This patch brings all the plumbing for QEMU to use these APIs. Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-12Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handlerFam Zheng4-16/+16
Done with following Coccinelle semantic patch, plus manual cosmetic changes in net/*.c. @@ expression E1, E2, E3, E4; @@ - qemu_set_fd_handler2(E1, NULL, E2, E3, E4); + qemu_set_fd_handler(E1, E2, E3, E4); Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1433400324-7358-8-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12tap: Drop tap_can_sendFam Zheng1-11/+2
This callback is called by main loop before polling s->fd, if it returns false, the fd will not be polled in this iteration. This is redundant with checks inside read callback. After this patch, the data will be sent to peer when it arrives. If the device can't receive, it will be queued to incoming_queue, and when the device status changes, this queue will be flushed. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1433400324-7358-7-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12net/socket: Drop net_socket_can_sendFam Zheng1-12/+19
This callback is called by main loop before polling s->fd, if it returns false, the fd will not be polled in this iteration. This is redundant with checks inside read callback. After this patch, the data will be sent to peer when it arrives. If the device can't receive, it will be queued to incoming_queue, and when the device status changes, this queue will be flushed. If the peer is not ready, disable the read poll until send completes. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1433400324-7358-6-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12netmap: Drop netmap_can_sendFam Zheng1-12/+2
This callback is called by main loop before polling s->fd, if it returns false, the fd will not be polled in this iteration. This is redundant with checks inside read callback. After this patch, the data will be copied from s->fd to s->iov when it arrives. If the device can't receive, it will be queued to incoming_queue, and when the device status changes, this queue will be flushed. Also remove the qemu_can_send_packet() check in netmap_send. If it's true, we are good; if it's false, the qemu_sendv_packet_async would return 0 and read poll will be disabled until netmap_send_completed is called. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1433400324-7358-5-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12l2tpv3: Drop l2tpv3_can_sendFam Zheng1-10/+1
This callback is called by main loop before polling s->fd, if it returns false, the fd will not be polled in this iteration. This is redundant with checks inside read callback. After this patch, the data will be copied from s->fd to s->msgvec when it arrives. If the device can't receive, it will be queued to incoming_queue, and when the device status changes, this queue will be flushed. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1433400324-7358-4-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-09vhost-user: Improve -netdev/netdev_add/-net/... error reportingMarkus Armbruster1-13/+12
When -netdev vhost-user fails, it first reports a specific error, then one or more generic ones, like this: $ qemu-system-x86_64 -netdev vhost-user,id=foo,chardev=xxx qemu-system-x86_64: -netdev vhost-user,id=foo,chardev=xxx: chardev "xxx" not found qemu-system-x86_64: -netdev vhost-user,id=foo,chardev=xxx: No suitable chardev found qemu-system-x86_64: -netdev vhost-user,id=foo,chardev=xxx: Device 'vhost-user' could not be initialized With the command line, the messages go to stderr. In HMP, they go to the monitor. In QMP, the last one becomes the error reply, and the others go to stderr. Convert net_init_vhost_user() and its helpers to Error. This suppresses the unwanted unspecific error messages, and makes the specific error the QMP error reply. Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-09QemuOpts: Convert qemu_opt_foreach() to ErrorMarkus Armbruster1-3/+4
Retain the function value for now, to permit selective conversion of its callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-09QemuOpts: Drop qemu_opt_foreach() parameter abort_on_failureMarkus Armbruster1-1/+1
When the argument is non-zero, qemu_opt_foreach() stops on callback returning non-zero, and returns that value. When the argument is zero, it doesn't stop, and returns the callback's value from the last iteration. The two callers that pass zero could just as well pass one: * qemu_spice_init()'s callback add_channel() either returns zero or exit()s. * config_write_opts()'s callback config_write_opt() always returns zero. Drop the parameter, and always stop. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-09QemuOpts: Convert qemu_opts_foreach() to ErrorMarkus Armbruster2-6/+7
Retain the function value for now, to permit selective conversion of its callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com>
2015-06-08QemuOpts: Drop qemu_opts_foreach() parameter abort_on_failureMarkus Armbruster2-3/+4
When the argument is non-zero, qemu_opts_foreach() stops on callback returning non-zero, and returns that value. When the argument is zero, it doesn't stop, and returns the bit-wise inclusive or of all the return values. Funky :) The callers that pass zero could just as well pass one, because their callbacks can't return anything but zero: * qemu_add_globals()'s callback qdev_add_one_global() * qemu_config_write()'s callback config_write_opts() * main()'s callbacks default_driver_check(), drive_enable_snapshot(), vnc_init_func() Drop the parameter, and always stop. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com>
2015-06-03slirp: use less predictable directory name in /tmp for smb config ↵Michael Tokarev1-4/+3
(CVE-2015-4037) In this version I used mkdtemp(3) which is: _BSD_SOURCE || /* Since glibc 2.10: */ (_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700) (POSIX.1-2008), so should be available on systems we care about. While at it, reset the resulting directory name within smb structure on error so cleanup function wont try to remove directory which we failed to create. Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Markus Armbruster <armbru@redhat.com>
2015-06-01vhost-user: add multi queue supportOuyang Changchun1-13/+24
Based on patch by Nikolay Nikolaev: Vhost-user will implement the multi queue support in a similar way to what vhost already has - a separate thread for each queue. To enable the multi queue functionality - a new command line parameter "queues" is introduced for the vhost-user netdev. Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-05-27net/net: Record usage status of mac addressShannon Zhao1-4/+55
Currently QEMU dynamically generates mac address for the NIC which doesn't specify the mac address. But when we hotplug a NIC without specifying mac address, the mac address will increase for the same NIC along with hotplug and hot-unplug, and at last it will overflow. And if we codeplug one NIC with mac address e.g. "52:54:00:12:34:56", then hotplug one NIC without specifying mac address and the mac address of the hotplugged NIC is duplicate of "52:54:00:12:34:56". This patch add a mac_table to record the usage status and free the mac address when the NIC is unrealized. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap: Improve -netdev/netdev_add/-net/... tap error reportingMarkus Armbruster1-23/+22
When -netdev tap fails, it first reports a specific error, then a generic one, like this: $ qemu-system-x86_64 -netdev tap,id=foo qemu-system-x86_64: -netdev tap,id=foo: could not configure /dev/net/tun: Operation not permitted qemu-system-x86_64: -netdev tap,id=foo: Device 'tap' could not be initialized With the command line, the messages go to stderr. In HMP, they go to the monitor. In QMP, the second one becomes the error reply, and the first one goes to stderr. Convert net_init_tap() to Error. This suppresses the unwanted second message, and makes the specific error the QMP error reply. [Dropped duplicate "and" from error message as suggested by Eric Blake: "ifname=, script=, downscript=, and vnet_hdr=, " "queues=, and vhostfds= are invalid with helper=" --Stefan] Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-16-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap: Finish conversion of tap_open() to ErrorMarkus Armbruster1-4/+0
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-15-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap-solaris: Convert tap_open() to ErrorMarkus Armbruster1-29/+30
Fixes inappropriate use of syslog(). Not fixed: leaks on error paths, suspicious non-fatal errors. FIXMEs added instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-14-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap-bsd: Convert tap_open() to ErrorMarkus Armbruster1-19/+14
Fixes inappropriate use of stderr in monitor command handler. While there, improve some of the messages a bit. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-13-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap-linux: Convert tap_open() to ErrorMarkus Armbruster1-8/+9
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-12-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap: Permit incremental conversion of tap_open() to ErrorMarkus Armbruster7-13/+22
Convert the trivial ones immediately: tap-aix and tap-haiku. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-11-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap: Convert launch_script() to ErrorMarkus Armbruster1-12/+28
Fixes inappropriate use of stderr in monitor command handler. While there, improve the messages some. [Fixed Error **err -> Error *err local variable that broke the build. --Stefan] Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-10-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap: Convert net_init_tap_one() to ErrorMarkus Armbruster1-32/+38
[Dropped %s from "tap: open vhost char device failed: %s" since error_setg_errno() already prints a human-readable error string and there is no format string argument. --Stefan] Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-9-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap: Convert tap_set_sndbuf() to ErrorMarkus Armbruster7-14/+10
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-8-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap: Improve -netdev/netdev_add/-net/... bridge error reportingMarkus Armbruster1-11/+19
When -netdev bridge fails, it first reports a specific error, then a generic one, like this: $ qemu-system-x86_64 -netdev bridge,id=foo failed to launch bridge helper qemu-system-x86_64: -netdev bridge,id=foo: Device 'bridge' could not be initialized The first message goes to stderr. Wrong for HMP, because errors need to go to the monitor there. The second message goes to stderr for -netdev, to the monitor for HMP netdev_add, and becomes the error reply for QMP netdev_add. Convert net_bridge_run_helper() to Error, and propagate its errors through net_init_bridge(). This ensures the error gets reported where the user is, and suppresses the unwanted second message. While there, improve the error messages a bit. The above example becomes: $ qemu-system-x86_64 -netdev bridge,id=foo qemu-system-x86_64: -netdev bridge,id=foo: bridge helper failed net_init_tap() also uses net_bridge_run_helper(). Propagate its errors there as well. Improves reporting these errors with -netdev tap & friends. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-7-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27tap: net_tap_fd_init() can't fail, drop dead error handlingMarkus Armbruster1-13/+1
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-6-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27net/dump: Improve -net/host_net_add dump error reportingMarkus Armbruster1-6/+6
When -net dump fails, it first reports a specific error, then a generic one, like this: $ qemu-system-x86_64 -net dump,id=foo,file=/eperm qemu-system-x86_64: -net dump,id=foo,file=/eperm: -net dump: can't open /eperm qemu-system-x86_64: -net dump,id=foo,file=/eperm: Device 'dump' could not be initialized Convert net_init_tap() to Error. This suppresses the unwanted second message. Improve the error messages to include strerror(errno) where appropriate. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-5-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27net: Improve -net nic error reportingMarkus Armbruster1-6/+6
When -net nic fails, it first reports a specific error, then a generic one, like this: $ qemu-system-x86_64 -net nic,netdev=nonexistent qemu-system-x86_64: -net nic,netdev=nonexistent: netdev 'nonexistent' not found qemu-system-x86_64: -net nic,netdev=nonexistent: Device 'nic' could not be initialized Convert net_init_nic() to Error to get rid of the unwanted second error message. While there, tidy up an Overcapitalized Error Message. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-4-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27net: Permit incremental conversion of init functions to ErrorMarkus Armbruster12-29/+40
Error reporting for netdev_add is broken: the net_client_init_fun[] report the actual errors with (at best) error_report(), and their caller net_client_init1() makes up a generic error on top. For command line and HMP, this produces an mildly ugly error cascade. In QMP, the actual errors go to stderr, and the generic error becomes the command's error reply. To fix this, we need to convert the net_client_init_fun[] to Error. To permit fixing them one by one, add an Error ** parameter to the net_client_init_fun[]. If the call fails without returning an Error, make up the same generic Error as before. But if it returns one, use that instead. Since none of them does so far, no functional change. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-3-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-27net: Improve error message for -net hubport a bitMarkus Armbruster2-4/+6
Type "hubport" is valid only with -netdev. Unfortunately, that's detected late and the error message doesn't explain why: $ qemu-system-i386 -net hubport,id=foo,hubid=0 qemu-system-i386: -net hubport,id=foo,hubid=0: Device 'hubport' could not be initialized Improve the error message to "Parameter 'type' expects a net type". Not fixed: -net hubport without the parameters required by -netdev hubport still asks for those parameters: $ qemu-system-i386 -net hubport qemu-system-i386: -net hubport: Parameter 'hubid' is missing Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1431691143-1015-2-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-11net: add MAC address string printerScott Feldman1-0/+7
We can use this in virtio-net code as well as new Rocker driver code, so up-level this. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1426306173-24884-2-git-send-email-sfeldma@gmail.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-03-12net: synchronize net_host_device_remove with host_net_remove_completionPaolo Bonzini1-3/+3
Using net_host_check_device is unnecessary. qemu_del_net_client asserts for the non-peer case that it can only process NIC type NetClientStates, and that assertion is valid for the peered case as well, so move it and use the same check in net_host_device_remove. host_net_remove_completion is already checking the type. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Jason Wang <jasowang@redhat.com> Message-id: 1419353600-30519-2-git-send-email-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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