e8dd1d9c39
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>
Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org - QEMU team