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https://gitlab.com/qemu-project/qemu
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7d6eff13b3
When instantiating XenBus itself, for each NIC which is configured with either the model unspecified, or set to to "xen" or "xen-net-device", create a corresponding xen-net-device for it. Now we can revert the previous more hackish version which relied on the platform code explicitly registering the NICs on its own XenBus, having returned the BusState* from xen_bus_init() itself. This also fixes the setup for Xen PV guests, which was previously broken in various ways and never actually managed to peer with the netdev. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
#include "qemu/osdep.h"
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#include "hw/xen/xen-legacy-backend.h"
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#include "qemu/option.h"
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#include "sysemu/blockdev.h"
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#include "sysemu/sysemu.h"
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/* ------------------------------------------------------------- */
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static int xen_config_dev_dirs(const char *ftype, const char *btype, int vdev,
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char *fe, char *be, int len)
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{
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char *dom;
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dom = qemu_xen_xs_get_domain_path(xenstore, xen_domid);
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snprintf(fe, len, "%s/device/%s/%d", dom, ftype, vdev);
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free(dom);
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dom = qemu_xen_xs_get_domain_path(xenstore, 0);
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snprintf(be, len, "%s/backend/%s/%d/%d", dom, btype, xen_domid, vdev);
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free(dom);
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xenstore_mkdir(fe, XS_PERM_READ | XS_PERM_WRITE);
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xenstore_mkdir(be, XS_PERM_READ);
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return 0;
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}
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static int xen_config_dev_all(char *fe, char *be)
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{
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/* frontend */
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if (xen_protocol)
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xenstore_write_str(fe, "protocol", xen_protocol);
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xenstore_write_int(fe, "state", XenbusStateInitialising);
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xenstore_write_int(fe, "backend-id", 0);
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xenstore_write_str(fe, "backend", be);
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/* backend */
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xenstore_write_str(be, "domain", qemu_name ? qemu_name : "no-name");
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xenstore_write_int(be, "online", 1);
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xenstore_write_int(be, "state", XenbusStateInitialising);
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xenstore_write_int(be, "frontend-id", xen_domid);
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xenstore_write_str(be, "frontend", fe);
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return 0;
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}
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/* ------------------------------------------------------------- */
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int xen_config_dev_vfb(int vdev, const char *type)
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{
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char fe[256], be[256];
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xen_config_dev_dirs("vfb", "vfb", vdev, fe, be, sizeof(fe));
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/* backend */
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xenstore_write_str(be, "type", type);
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/* common stuff */
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return xen_config_dev_all(fe, be);
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}
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int xen_config_dev_vkbd(int vdev)
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{
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char fe[256], be[256];
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xen_config_dev_dirs("vkbd", "vkbd", vdev, fe, be, sizeof(fe));
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return xen_config_dev_all(fe, be);
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}
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int xen_config_dev_console(int vdev)
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{
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char fe[256], be[256];
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xen_config_dev_dirs("console", "console", vdev, fe, be, sizeof(fe));
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return xen_config_dev_all(fe, be);
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}
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