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2015-07-20socket: pass correct size in net_socket_send()Jason Wang
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>
2015-06-12Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handlerFam Zheng
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>
2015-06-12net/socket: Drop net_socket_can_sendFam Zheng
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>
2015-05-27net: Permit incremental conversion of init functions to ErrorMarkus Armbruster
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>
2015-02-18monitor: Clean up around monitor_handle_fd_param()Markus Armbruster
monitor_handle_fd_param() is a wrapper around monitor_handle_fd_param2() that feeds errors to qerror_report_err() instead of returning them. qerror_report_err() is inappropriate in many contexts. monitor_handle_fd_param() looks simpler than monitor_handle_fd_param2(), which tempts use. Remove the temptation: drop the wrapper and open-code the (trivial) error handling instead. Replace the open-coded qerror_report_err() by error_report_err() in places that already use error_report(). Turns out that's everywhere. While there, rename monitor_handle_fd_param2() to monitor_fd_param(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-11-21net/socket: fix Uninitialized scalar variableGonglei
If is_connected parameter is false, the saddr variable will no initialize. Coverity report: uninit_use: Using uninitialized value saddr.sin_port. We don't need add saddr information to nc->info_str when is_connected is false. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-11-18net: The third parameter of getsockname should be initializedzhanghailiang
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-10-02net: call socket_set_fast_reuse instead of setting SO_REUSEADDRSebastian Ottlik
SO_REUSEADDR should be avoided on Windows but is desired on other operating systems. So instead of setting it we call socket_set_fast_reuse that will result in the appropriate behaviour on all operating systems. An exception to this rule are multicast sockets where it is sensible to have multiple sockets listen on the same ip and port and we should set SO_REUSEADDR on windows. Signed-off-by: Sebastian Ottlik <ottlik@fzi.de> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Weil <sw@weilnetz.de>
2013-08-22aio / timers: Untangle include filesAlex Bligh
include/qemu/timer.h has no need to include main-loop.h and doing so causes an issue for the next patch. Unfortunately various files assume including timers.h will pull in main-loop.h. Untangle this mess. Signed-off-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-04-02net: ensure "socket" backend uses non-blocking fdsStefan Hajnoczi
There are several code paths in net_init_socket() depending on how the socket is created: file descriptor passing, UDP multicast, TCP, or UDP. Some of these support both listen and connect. Not all code paths set the socket to non-blocking. This patch addresses the file descriptor passing and UDP cases which were missing socket_set_nonblock(fd) calls. I considered moving socket_set_nonblock(fd) to a central location but it turns out the code paths are different enough to require non-blocking at different places. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2013-04-02oslib-posix: rename socket_set_nonblock() to qemu_set_nonblock()Stefan Hajnoczi
The fcntl(fd, F_SETFL, O_NONBLOCK) flag is not specific to sockets. Rename to qemu_set_nonblock() just like qemu_set_cloexec(). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2013-03-25net: increase buffer size to accommodate Jumbo frame pktsScott Feldman
Socket buffer sizes were hard-coded to 4K for VDE and socket netdevs. Bump this up to 68K (ala tap netdev) to handle maximum GSO packet size (64k) plus plenty of room for the ethernet and virtio_net headers. Originally, ran into this limitation when using -netdev UDP sockets to connect VM-to-VM, where VM interface is configure with MTU=9000. (Using virtio_net NIC model). Test is simple: ping -M do -s 8500 <target>. This test will attempt to ping with unfragmented packet of given size. Without patch, size is limited to < 4K (minus protocol hdrs). With patch, ping test works with pkt size up to 9000 (again, minus protocol hdrs). v2: per Stefan, increase buf size to (4096+65536) as done in tap and apply to vde and socket netdevs. v1: increase buf size to 12K just for -netdev UDP sockets Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-25net: use socket_set_nodelay() for -netdev socketStefan Hajnoczi
Reduce -netdev socket latency by disabling the Nagle algorithm on SOCK_STREAM sockets in net/socket.c. Since we are tunelling Ethernet over TCP we shouldn't artificially delay outgoing packets, let the guest decide packet scheduling. I already get sub-millisecond -netdev socket ping times on localhost, so there was no measurable difference in my testing. This won't hurt though and may improve remote socket performance. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2013-03-22MinGW: Replace setsockopt by qemu_setsocketoptStefan Weil
Instead of adding missing type casts which are needed by MinGW for the 4th argument, the patch uses qemu_setsockopt which was invented for this purpose. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2012-12-19misc: move include files to include/qemu/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19monitor: move include files to include/monitor/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19net: reorganize headersPaolo Bonzini
Move public headers to include/net, and leave private headers in net/. Put the virtio headers in include/net/tap.h, removing the multiple copies that existed. Leave include/net/tap.h as the interface for NICs, and net/tap_int.h as the interface for OS-specific parts of the tap backend. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19janitor: do not include qemu-char everywherePaolo Bonzini
Touching char/char.h basically causes the whole of QEMU to be rebuilt. Avoid this, it is usually unnecessary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-11-01net: use "socket" model name for UDP socketsLei Li
Fix the problem that can not delete the udp socket. It's caused by passing "udp" model to net_socket_udp_init, but we do not have "udp" model in our model list. Pass the right model "socket" to init function. https://bugs.launchpad.net/qemu/+bug/1073585?comments=all Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2012-10-08net: consolidate NetClientState header files into onePaolo Bonzini
This patch doesn't seem much useful alone, I must admit. However, it makes sense as part of the upcoming directory reorganization, where I want to have include/net/tap.h as the net<->hw interface for tap. Then having both net/tap.h and include/net/tap.h does not work. "Fixed" by moving all the init functions to a single header file net/clients.h. The patch also adopts a uniform style for including net/*.h files from net/*.c, without the net/ path. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
2012-09-23net/socket: Fix compiler warning (regression for MinGW)Stefan Weil
Commit 213fd5087e2e4e2da10ad266df0ba950cf7618bf removed a type cast which is needed for MinGW: net/socket.c:136: warning: pointer targets in passing argument 2 of ‘sendto’ differ in signedness /usr/lib/gcc/amd64-mingw32msvc/4.4.4/../../../../amd64-mingw32msvc/include/winsock2.h:1313: note: expected ‘const char *’ but argument is of type ‘const uint8_t *’ Add a 'qemu_sendto' macro which provides that type cast where needed and use the new macro instead of 'sendto'. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
2012-09-14net: EAGAIN handling for net/socket.c TCPStefan Hajnoczi
Replace spinning send_all() with a proper non-blocking send. When the socket write buffer limit is reached, we should stop trying to send and wait for the socket to become writable again. Non-blocking TCP sockets can return in two different ways when the write buffer limit is reached: 1. ret = -1 and errno = EAGAIN/EWOULDBLOCK. No data has been written. 2. ret < total_size. Short write, only part of the message was transmitted. Handle both cases and keep track of how many bytes have been written in s->send_index. (This includes the 'length' header before the actual payload buffer.) Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-09-14net: EAGAIN handling for net/socket.c UDPStefan Hajnoczi
Implement asynchronous send for UDP (or other SOCK_DGRAM) sockets. If send fails with EAGAIN we wait for the socket to become writable again. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-09-14net: asynchronous send/receive infrastructure for net/socket.cStefan Hajnoczi
The net/socket.c net client is not truly asynchronous. This patch borrows the qemu_set_fd_handler2() code from net/tap.c as the basis for proper asynchronous send/receive. Only read packets from the socket when the peer is able to receive. This avoids needless queuing. Later patches implement asynchronous send. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-09-07monitor: Rename+move net_handle_fd_param -> monitor_handle_fd_paramNicholas Bellinger
This patch renames+moves the net_handle_fd_param() caller used to obtain a file descriptor from either qemu_parse_fd() (the normal case) or from monitor_get_fd() (migration case) into a generically prefixed monitor_handle_fd_param() to be used by vhost-scsi code. Also update net/[socket,tap].c consumers to use the new prefix. Reported-by: Michael S. Tsirkin <mst@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-08-01net: add the support for -netdev socket, listenZhi Yong Wu
The -net socket,listen option does not work with the newer -netdev syntax: http://lists.gnu.org/archive/html/qemu-devel/2011-11/msg01508.html This patch makes it work now. For the case where one vlan has multiple listenning sockets, the patch will also provide the support. Supported syntax: 1.) -net socket,listen=127.0.0.1:1234,vlan=0 2.) -net socket,listen=127.0.0.1:1234,vlan=0 -net socket,listen=127.0.0.1:1235,vlan=0 3.) -netdev socket,listen=127.0.0.1:1234,id=socket0 Drop the NetSocketListenState struct and add a listen_fd field to NetSocketState. When a -netdev socket,listen= instance is created there will be a NetSocketState with fd=-1 and a valid listen_fd. The net_socket_accept() handler waits for listen_fd to become readable and then accepts the connection. When this state transition happens, we no longer monitor listen_fd for incoming connections...until the client disconnects again. Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2012-08-01net: fix the coding styleZhi Yong Wu
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2012-08-01net: Rename VLANClientState to NetClientStateStefan Hajnoczi
The vlan feature is no longer part of net core. Rename VLANClientState to NetClientState because net clients are not explicitly associated with a vlan at all, instead they have a peer net client to which they are connected. This patch is a mechanical search-and-replace except for a few whitespace fixups where changing VLANClientState to NetClientState misaligned whitespace. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2012-08-01net: Drop vlan argument to qemu_new_net_client()Stefan Hajnoczi
Since hubs are now used to implement the 'vlan' feature and the vlan argument is always NULL, remove the argument entirely and update all net clients that use qemu_new_net_client(). Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2012-08-01net: Use hubs for the vlan featureStefan Hajnoczi
Stop using the special-case vlan code in net.c. Instead use the hub net client to implement the vlan feature. The next patch will remove vlan code from net.c completely. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2012-07-23remove unused QemuOpts parameter from net init functionsLaszlo Ersek
v1->v2: - unchanged v2->v3: - keep "qemu-option.h" included in "net/slirp.h" Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-07-23convert net_init_socket() to NetClientOptionsLaszlo Ersek
I "reverse engineered" the following permissions between the -socket sub-options: fd listen connect mcast udp | localaddr fd x . . . . | . listen . x . . . | . connect . . x . . | . mcast . . . x . | x udp . . . . x | x -------------------------------------------+ localaddr . . . x x x I transformed the code accordingly. The real fix would be to embed "fd", "listen", "connect", "mcast" and "udp" in a separate union. However OptsVisitor's enum parser only supports the type=XXX QemuOpt instance as union discriminator. Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-07-23convert net_client_init() to OptsVisitorLaszlo Ersek
The net_client_init() prototype is kept intact. Based on "is_netdev", the QemuOpts-rooted QemuOpt-list is parsed as a Netdev or a NetLegacy. The original meat of net_client_init() is moved to and simplified in net_client_init1(): Fields not common between -net and -netdev are clearly separated. Getting the name for the init functions is cleaner: Netdev::id is mandatory, and all init functions handle a NULL NetLegacy::name. NetLegacy::vlan explicitly depends on -net (see below). Verifying the "type=" option for -netdev can be turned into a switch. Format validation with qemu_opts_validate() can be removed because the visitor covers it. Relatedly, the "net_client_types" array is reduced to an array of init functions that can be directly indexed by opts->kind. (Help text is available in the schema JSON.) The outermost negation in the condition around qemu_find_vlan() was flattened, because it expresses the dependent code's requirements more clearly. VLAN lookup is avoided if there's no init function to pass the VLAN to. Whenever the value of type=... is needed, we substitute NetClientOptionsKind_lookup[kind]. The individual init functions are not converted yet, thus the original QemuOpts instance is passed transparently. v1->v2: - NetLegacy::name is optional. Tracked it through all init functions: they all handle a NULL name. Updated commit message accordingly. v2->v3: - NetLegacy::id is allowed and takes precedence over NetLegacy::name. Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-07-23hw, net: "net_client_type" -> "NetClientOptionsKind" (qapi-generated)Laszlo Ersek
NET_CLIENT_TYPE_ -> NET_CLIENT_OPTIONS_KIND_ Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-06-04net: purge the monitor object from all init functionsLuiz Capitulino
The only backend that really uses it is the socket one, which calls monitor_get_fd(). But it can use 'cur_mon' instead. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-By: Laszlo Ersek <lersek@redhat.com>
2012-02-10net: remove extra spaces in help messagesBenjamin MARSILI
Signed-off-by: Benjamin MARSILI <mlspirat42@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-01-12Support for UDP unicast network backendBenjamin
Signed-off-by: Benjamin MARSILI <mlspirat42@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-06net/socket.c: Fix fd leak in net_socket_listen_init() error pathsPeter Maydell
Fix a leak of a file descriptor due to missing closesocket() calls in error paths in net_socket_listen_init(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-14Merge remote-tracking branch 'stefanha/trivial-patches-next' into stagingAnthony Liguori
2011-12-12net: take ownership of fd in socket init functionsStefan Hajnoczi
Today net/socket.c has no consistent policy for closing the socket file descriptor when initialization fails. This means we leak the file descriptor in some cases or we could also try to close it twice. Make error paths consistent by taking ownership of the file descriptor and closing it on error. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-12net: expand tabs in net/socket.cStefan Hajnoczi
In order to make later patches sane, expand the tab characters and conform to QEMU coding style now. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-06net/socket.c : fix memory leakZhi Hui Li
Signed-off-by: Li Zhi Hui <zhihuili@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-08-20Use glib memory allocation and free functionsAnthony Liguori
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-07Fix forcing multicast msgs to loopback on OpenBSD.Brad
Fix forcing multicast msgs to loopback on OpenBSD. e.g. $ sudo qemu -m 128 -no-fd-bootchk \ -hda virtual.img -boot n -nographic \ -net nic,vlan=0,model=rtl8139,macaddr=52:54:00:12:34:03 \ -net user -tftp /usr/src/sys/arch/i386/compile/TEST -bootp pxeboot \ -net nic,vlan=1,model=rtl8139,macaddr=52:54:00:23:03:01 \ -net tap,vlan=1,script=no \ -net nic,vlan=3,model=rtl8139,macaddr=52:54:00:23:03:03 \ -net socket,vlan=3,mcast=230.0.0.1:10003 setsockopt(SOL_IP, IP_MULTICAST_LOOP): Invalid argument qemu: -net socket,vlan=3,mcast=230.0.0.1:10003: Device 'socket' could not be initialized Signed-off-by: Brad Smith <brad@comstyle.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-25Wrap recv to avoid warningsBlue Swirl
Avoid warnings like these by wrapping recv(): CC slirp/ip_icmp.o /src/qemu/slirp/ip_icmp.c: In function 'icmp_receive': /src/qemu/slirp/ip_icmp.c:418:5: error: passing argument 2 of 'recv' from incompatible pointer type [-Werror] /usr/local/lib/gcc/i686-mingw32msvc/4.6.0/../../../../i686-mingw32msvc/include/winsock2.h:547:32: note: expected 'char *' but argument is of type 'struct icmp *' Remove also casts used to avoid warnings. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-24Strip trailing '\n' from error_report()'s first argumentMarkus Armbruster
error_report() prepends location, and appends a newline. The message constructed from the arguments should not contain a newline. Fix the obvious offenders. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-02-25Fixing network over sockets implementation for win32Pavel Dovgaluk
MSDN includes the following in WSAEALREADY error description for connect() function: "To preserve backward compatibility, this error is reported as WSAEINVAL to Winsock applications that link to either Winsock.dll or Wsock32.dll". So check of this error code was added to allow network connections through the sockets in Windows. Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-17Fix warning on mingw32Blue Swirl
Avoid this warning like other uses of setsockopt: /src/qemu/net/socket.c: In function 'net_socket_mcast_create': /src/qemu/net/socket.c:210: warning: passing argument 4 of 'setsockopt' from incompatible pointer type Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-09net/sock: option to specify local addressMike Ryan
Add an option to specify the host IP to send multicast packets from, when using a multicast socket for networking. The option takes an IP address and sets the IP_MULTICAST_IF socket option, which causes the packets to use that IP's interface as an egress. This is useful if the host machine has several interfaces with several virtual networks across disparate interfaces. Signed-off-by: Mike Ryan <mikeryan@ISI.EDU> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-03-16error: Replace qemu_error() by error_report()Markus Armbruster
error_report() terminates the message with a newline. Strip it it from its arguments. This fixes a few error messages lacking a newline: net_handle_fd_param()'s "No file descriptor named %s found", and tap_open()'s "vnet_hdr=1 requested, but no kernel support for IFF_VNET_HDR available" (all three versions). There's one place that passes arguments without newlines intentionally: load_vmstate(). Fix it up.
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