1staticvoidtap_send(void*opaque)2{3TAPState *s =opaque;4intsize;56do{7uint8_t *buf = s->buf;89size = tap_read_packet(s->fd, s->buf,sizeof(s->buf));10if(size <=0) {11break;12}13//如果设置了vnet头部长度,但是using_vnet_hdr为0,就在移动buffer指针且修正size。因为这里buffer里...
-objectfilter-buffer,id=id,netdev=netdevid,interval=t[,queue=all|rx|tx][,status=on|off][,position=head|tail|id=<id>][,insert=behind|before] Interval t can’t be 0, this filter batches the packet delivery: all packets arriving in a given interval on netdev netdevid are delayed unti...
enable logging of specified items (use '-d help' for a list of log items) -D logfile output log to logfile (default stderr) -dfilter range,.. filter debug output to range of addresses (useful for -d cpu,exec,etc..) -L path set the directory for the BIOS, VGA BIOS and keymaps ...
{ 'struct': 'FilterBufferProperties', 'base': 'NetfilterProperties', 'data': { 'interval': 'uint32' } }## # @FilterDumpProperties: # # Properties for filter-dump objects. # # @file: the filename where the dumped packets should be stored ...
User Mode模式下,用户只需要将各种不同平台的处理编译得到的Linux程序放在QEMU虚拟中运行即可,其他的事情全部由QEMU虚拟机来完成,不需要用户自定义内核和虚拟磁盘等文件;System Mode模式下,最明显的特点是用户可以为QEMU虚拟机指定运行的内核或者虚拟硬盘等文件,简单来说系统模式下QEMU虚拟机是可根据用户的要求配置的。
filter-buffer: fix segfault when starting qemu with status=off property Apr 6, 2016 pc-bios Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into… Mar 25, 2016 pixman @ 87eea99 pixman: update internal copy to pixman-0.32.6 ...
configure ituse'fd=h' to connect to an already opened TAP interfaceuse'fds=x:y:...:z' to connect to already opened multiqueue capable TAP interfacesuse'sndbuf=nbytes' to limit the size of the sendbuffer(the default is disabled'sndbuf=0' to enable flow control set'sndbuf=1048576')usevne...
(default=/usr/lib/qemu/qemu-bridge-helper) to configure it use 'fd=h' to connect to an already opened TAP interface use 'fds=x:y:...:z' to connect to already opened multiqueue capable TAP interfaces use 'sndbuf=nbytes' to limit the size of the send buffer (the default is disabled...
streaming-video=[off|all|filter] Configure video stream detection. Default is off. agent-mouse=[on|off] Enable/disable passing mouse events via vdagent. Default is on. playback-compression=[on|off] Enable/disable audio stream compression (using celt 0.5.1). Default is on. ...
guest OS的virtio前端准备好IO buffer后,然后前端访问特定的MMIO(QEMU提前为virtio设备设置好的)触发misconfig EPT violation类型的vm-exit,并退到KVM,KVM用ioeventfd机制通知QEMU说有IO buffer填好了,main loop检测到对应的ioevent后dispatch对应的callback处理。处理完成后QEMU通过irqfd注入中断给Guest通知其已经IO buffer...