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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH RFC V3 01/12] xen: Support new libxc calls from xen unstable.
From: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Update the libxenctrl calls in Qemu to use the new interface, otherwise
Qemu wouldn't be able to build against new versions of the library.
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
configure | 5 +++++
hw/xen_backend.c | 10 +++++-----
hw/xen_backend.h | 2 +-
hw/xen_common.h | 23 ++++++++++++++++++++++-
hw/xen_disk.c | 12 ++++++------
hw/xen_domainbuild.c | 2 +-
hw/xen_nic.c | 16 ++++++++--------
7 files changed, 48 insertions(+), 22 deletions(-)
diff --git a/configure b/configure
index 4061cb7..0d745e0 100755
--- a/configure
+++ b/configure
@@ -1113,7 +1113,12 @@ if test "$xen" != "no" ; then
cat > $TMPC <<EOF
#include <xenctrl.h>
#include <xs.h>
+#include <xen/xen-compat.h>
+#if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a
int main(void) { xs_daemon_open(); xc_interface_open(); return 0; }
+#else
+int main(void) { xs_daemon_open(); xc_interface_open(0, 0, 0); return 0; }
+#endif
EOF
if compile_prog "" "$xen_libs" ; then
xen=yes
diff --git a/hw/xen_backend.c b/hw/xen_backend.c
index a2e408f..b23620f 100644
--- a/hw/xen_backend.c
+++ b/hw/xen_backend.c
@@ -43,7 +43,7 @@
/* ------------------------------------------------------------- */
/* public */
-int xen_xc;
+qemu_xc_interface xen_xc = XC_HANDLER_INITIAL_VALUE;
struct xs_handle *xenstore = NULL;
const char *xen_protocol;
@@ -216,7 +216,7 @@ static struct XenDevice *xen_be_get_xendev(const char
*type, int dom, int dev,
fcntl(xc_evtchn_fd(xendev->evtchndev), F_SETFD, FD_CLOEXEC);
if (ops->flags & DEVOPS_FLAG_NEED_GNTDEV) {
- xendev->gnttabdev = xc_gnttab_open();
+ xendev->gnttabdev = xc_gnttab_open(xen_xc);
if (xendev->gnttabdev < 0) {
xen_be_printf(NULL, 0, "can't open gnttab device\n");
xc_evtchn_close(xendev->evtchndev);
@@ -269,7 +269,7 @@ static struct XenDevice *xen_be_del_xendev(int dom, int dev)
if (xendev->evtchndev >= 0)
xc_evtchn_close(xendev->evtchndev);
if (xendev->gnttabdev >= 0)
- xc_gnttab_close(xendev->gnttabdev);
+ xc_gnttab_close(xen_xc, xendev->gnttabdev);
QTAILQ_REMOVE(&xendevs, xendev, next);
qemu_free(xendev);
@@ -627,8 +627,8 @@ int xen_be_init(void)
if (qemu_set_fd_handler(xs_fileno(xenstore), xenstore_update, NULL, NULL)
< 0)
goto err;
- xen_xc = xc_interface_open();
- if (xen_xc == -1) {
+ xen_xc = xc_interface_open(NULL, NULL, 0);
+ if (xen_xc == XC_HANDLER_INITIAL_VALUE) {
xen_be_printf(NULL, 0, "can't open xen interface\n");
goto err;
}
diff --git a/hw/xen_backend.h b/hw/xen_backend.h
index 292126d..1f23cde 100644
--- a/hw/xen_backend.h
+++ b/hw/xen_backend.h
@@ -55,7 +55,7 @@ struct XenDevice {
/* ------------------------------------------------------------- */
/* variables */
-extern int xen_xc;
+extern qemu_xc_interface xen_xc;
extern struct xs_handle *xenstore;
extern const char *xen_protocol;
diff --git a/hw/xen_common.h b/hw/xen_common.h
index 8a55b44..2cbc376 100644
--- a/hw/xen_common.h
+++ b/hw/xen_common.h
@@ -16,7 +16,8 @@
* tweaks needed to build with different xen versions
* 0x00030205 -> 3.1.0
* 0x00030207 -> 3.2.0
- * 0x00030208 -> unstable
+ * 0x00030209 -> 3.3.0
+ * 0x0003020a -> unstable
*/
#include <xen/xen-compat.h>
#if __XEN_LATEST_INTERFACE_VERSION__ < 0x00030205
@@ -31,4 +32,24 @@
# define xen_wmb() wmb()
#endif
+#if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a
+typedef int qemu_xc_interface;
+# define XC_HANDLER_INITIAL_VALUE -1
+# define xc_fd(xen_xc) xen_xc
+# define xc_interface_open(l, dl, f) xc_interface_open()
+# define xc_gnttab_open(xc) xc_gnttab_open()
+# define xc_gnttab_map_grant_ref(xc, gnt, domid, ref, flags) \
+ xc_gnttab_map_grant_ref(gnt, domid, ref, flags)
+# define xc_gnttab_map_grant_refs(xc, gnt, count, domids, refs, flags) \
+ xc_gnttab_map_grant_refs(gnt, count, domids, refs, flags)
+# define xc_gnttab_munmap(xc, gnt, pages, niov) xc_gnttab_munmap(gnt, pages,
niov)
+# define xc_gnttab_close(xc, dev) xc_gnttab_close(dev)
+#else
+typedef xc_interface *qemu_xc_interface;
+# define XC_HANDLER_INITIAL_VALUE NULL
+/* FIXME The fd of xen_xc is now xen_xc->fd */
+/* fd is the first field, so this works */
+# define xc_fd(xen_xc) (*(int*)xen_xc)
+#endif
+
#endif /* QEMU_HW_XEN_COMMON_H */
diff --git a/hw/xen_disk.c b/hw/xen_disk.c
index 134ac33..e38e155 100644
--- a/hw/xen_disk.c
+++ b/hw/xen_disk.c
@@ -243,7 +243,7 @@ static void ioreq_unmap(struct ioreq *ioreq)
if (batch_maps) {
if (!ioreq->pages)
return;
- if (xc_gnttab_munmap(gnt, ioreq->pages, ioreq->v.niov) != 0)
+ if (xc_gnttab_munmap(xen_xc, gnt, ioreq->pages, ioreq->v.niov) != 0)
xen_be_printf(&ioreq->blkdev->xendev, 0, "xc_gnttab_munmap failed:
%s\n",
strerror(errno));
ioreq->blkdev->cnt_map -= ioreq->v.niov;
@@ -252,7 +252,7 @@ static void ioreq_unmap(struct ioreq *ioreq)
for (i = 0; i < ioreq->v.niov; i++) {
if (!ioreq->page[i])
continue;
- if (xc_gnttab_munmap(gnt, ioreq->page[i], 1) != 0)
+ if (xc_gnttab_munmap(xen_xc, gnt, ioreq->page[i], 1) != 0)
xen_be_printf(&ioreq->blkdev->xendev, 0, "xc_gnttab_munmap
failed: %s\n",
strerror(errno));
ioreq->blkdev->cnt_map--;
@@ -270,7 +270,7 @@ static int ioreq_map(struct ioreq *ioreq)
return 0;
if (batch_maps) {
ioreq->pages = xc_gnttab_map_grant_refs
- (gnt, ioreq->v.niov, ioreq->domids, ioreq->refs, ioreq->prot);
+ (xen_xc, gnt, ioreq->v.niov, ioreq->domids, ioreq->refs,
ioreq->prot);
if (ioreq->pages == NULL) {
xen_be_printf(&ioreq->blkdev->xendev, 0,
"can't map %d grant refs (%s, %d maps)\n",
@@ -284,7 +284,7 @@ static int ioreq_map(struct ioreq *ioreq)
} else {
for (i = 0; i < ioreq->v.niov; i++) {
ioreq->page[i] = xc_gnttab_map_grant_ref
- (gnt, ioreq->domids[i], ioreq->refs[i], ioreq->prot);
+ (xen_xc, gnt, ioreq->domids[i], ioreq->refs[i], ioreq->prot);
if (ioreq->page[i] == NULL) {
xen_be_printf(&ioreq->blkdev->xendev, 0,
"can't map grant ref %d (%s, %d maps)\n",
@@ -684,7 +684,7 @@ static int blk_connect(struct XenDevice *xendev)
blkdev->protocol = BLKIF_PROTOCOL_X86_64;
}
- blkdev->sring = xc_gnttab_map_grant_ref(blkdev->xendev.gnttabdev,
+ blkdev->sring = xc_gnttab_map_grant_ref(xen_xc, blkdev->xendev.gnttabdev,
blkdev->xendev.dom,
blkdev->ring_ref,
PROT_READ | PROT_WRITE);
@@ -739,7 +739,7 @@ static void blk_disconnect(struct XenDevice *xendev)
xen_be_unbind_evtchn(&blkdev->xendev);
if (blkdev->sring) {
- xc_gnttab_munmap(blkdev->xendev.gnttabdev, blkdev->sring, 1);
+ xc_gnttab_munmap(xen_xc, blkdev->xendev.gnttabdev, blkdev->sring, 1);
blkdev->cnt_map--;
blkdev->sring = NULL;
}
diff --git a/hw/xen_domainbuild.c b/hw/xen_domainbuild.c
index 7f1fd66..232a456 100644
--- a/hw/xen_domainbuild.c
+++ b/hw/xen_domainbuild.c
@@ -176,7 +176,7 @@ static int xen_domain_watcher(void)
for (i = 3; i < n; i++) {
if (i == fd[0])
continue;
- if (i == xen_xc)
+ if (i == xc_fd(xen_xc))
continue;
close(i);
}
diff --git a/hw/xen_nic.c b/hw/xen_nic.c
index 08055b8..4f68850 100644
--- a/hw/xen_nic.c
+++ b/hw/xen_nic.c
@@ -166,7 +166,7 @@ static void net_tx_packets(struct XenNetDev *netdev)
(txreq.flags & NETTXF_more_data) ? " more_data"
: "",
(txreq.flags & NETTXF_extra_info) ? " extra_info"
: "");
- page = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
+ page = xc_gnttab_map_grant_ref(xen_xc, netdev->xendev.gnttabdev,
netdev->xendev.dom,
txreq.gref, PROT_READ);
if (page == NULL) {
@@ -185,7 +185,7 @@ static void net_tx_packets(struct XenNetDev *netdev)
} else {
qemu_send_packet(&netdev->nic->nc, page + txreq.offset,
txreq.size);
}
- xc_gnttab_munmap(netdev->xendev.gnttabdev, page, 1);
+ xc_gnttab_munmap(xen_xc, netdev->xendev.gnttabdev, page, 1);
net_tx_response(netdev, &txreq, NETIF_RSP_OKAY);
}
if (!netdev->tx_work)
@@ -272,7 +272,7 @@ static ssize_t net_rx_packet(VLANClientState *nc, const
uint8_t *buf, size_t siz
memcpy(&rxreq, RING_GET_REQUEST(&netdev->rx_ring, rc), sizeof(rxreq));
netdev->rx_ring.req_cons = ++rc;
- page = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
+ page = xc_gnttab_map_grant_ref(xen_xc, netdev->xendev.gnttabdev,
netdev->xendev.dom,
rxreq.gref, PROT_WRITE);
if (page == NULL) {
@@ -282,7 +282,7 @@ static ssize_t net_rx_packet(VLANClientState *nc, const
uint8_t *buf, size_t siz
return -1;
}
memcpy(page + NET_IP_ALIGN, buf, size);
- xc_gnttab_munmap(netdev->xendev.gnttabdev, page, 1);
+ xc_gnttab_munmap(xen_xc, netdev->xendev.gnttabdev, page, 1);
net_rx_response(netdev, &rxreq, NETIF_RSP_OKAY, NET_IP_ALIGN, size, 0);
return size;
@@ -350,11 +350,11 @@ static int net_connect(struct XenDevice *xendev)
return -1;
}
- netdev->txs = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
+ netdev->txs = xc_gnttab_map_grant_ref(xen_xc, netdev->xendev.gnttabdev,
netdev->xendev.dom,
netdev->tx_ring_ref,
PROT_READ | PROT_WRITE);
- netdev->rxs = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
+ netdev->rxs = xc_gnttab_map_grant_ref(xen_xc, netdev->xendev.gnttabdev,
netdev->xendev.dom,
netdev->rx_ring_ref,
PROT_READ | PROT_WRITE);
@@ -381,11 +381,11 @@ static void net_disconnect(struct XenDevice *xendev)
xen_be_unbind_evtchn(&netdev->xendev);
if (netdev->txs) {
- xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->txs, 1);
+ xc_gnttab_munmap(xen_xc, netdev->xendev.gnttabdev, netdev->txs, 1);
netdev->txs = NULL;
}
if (netdev->rxs) {
- xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->rxs, 1);
+ xc_gnttab_munmap(xen_xc, netdev->xendev.gnttabdev, netdev->rxs, 1);
netdev->rxs = NULL;
}
if (netdev->nic) {
--
1.6.5
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