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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] xl/libxl: add pvcalls support
Add pvcalls support to libxl and xl. Create the appropriate pvcalls
entries in xenstore.
Signed-off-by: Stefano Stabellini <stefano@xxxxxxxxxxx>
diff --git a/docs/misc/xenstore-paths.markdown
b/docs/misc/xenstore-paths.markdown
index 7be2592..77d1a36 100644
--- a/docs/misc/xenstore-paths.markdown
+++ b/docs/misc/xenstore-paths.markdown
@@ -299,6 +299,11 @@ A virtual scsi device frontend. Described by
A virtual usb device frontend. Described by
[xen/include/public/io/usbif.h][USBIF]
+#### ~/device/pvcalls/$DEVID/* []
+
+Paravirtualized POSIX function calls frontend. Described by
+[docs/misc/pvcalls.markdown][PVCALLS]
+
#### ~/console/* []
The primary PV console device. Described in [console.txt](console.txt)
@@ -377,6 +382,10 @@ A PV SCSI backend.
A PV USB backend. Described by
[xen/include/public/io/usbif.h][USBIF]
+
+#### ~/backend/pvcalls/$DOMID/$DEVID/* []
+
+A PVCalls backend. Described in [docs/misc/pvcalls.markdown][PVCALLS].
#### ~/backend/console/$DOMID/$DEVID/* []
diff --git a/tools/libxl/Makefile b/tools/libxl/Makefile
index 917ceb0..035e66e 100644
--- a/tools/libxl/Makefile
+++ b/tools/libxl/Makefile
@@ -140,7 +140,7 @@ LIBXL_OBJS = flexarray.o libxl.o libxl_create.o libxl_dm.o
libxl_pci.o \
libxl_vtpm.o libxl_nic.o libxl_disk.o libxl_console.o \
libxl_cpupool.o libxl_mem.o libxl_sched.o libxl_tmem.o \
libxl_9pfs.o libxl_domain.o libxl_vdispl.o \
- $(LIBXL_OBJS-y)
+ libxl_pvcalls.o $(LIBXL_OBJS-y)
LIBXL_OBJS += libxl_genid.o
LIBXL_OBJS += _libxl_types.o libxl_flask.o _libxl_types_internal.o
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index eca0ea2..76574d2 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -2006,6 +2006,16 @@ int libxl_device_p9_destroy(libxl_ctx *ctx, uint32_t
domid,
const libxl_asyncop_how *ao_how)
LIBXL_EXTERNAL_CALLERS_ONLY;
+/* pvcalls */
+int libxl_device_pvcalls_remove(libxl_ctx *ctx, uint32_t domid,
+ libxl_device_pvcalls *pvcalls,
+ const libxl_asyncop_how *ao_how)
+ LIBXL_EXTERNAL_CALLERS_ONLY;
+int libxl_device_pvcalls_destroy(libxl_ctx *ctx, uint32_t domid,
+ libxl_device_pvcalls *pvcalls,
+ const libxl_asyncop_how *ao_how)
+ LIBXL_EXTERNAL_CALLERS_ONLY;
+
/* PCI Passthrough */
int libxl_device_pci_add(libxl_ctx *ctx, uint32_t domid,
libxl_device_pci *pcidev,
diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index c498135..bbdeee5 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -1374,6 +1374,9 @@ static void domcreate_launch_dm(libxl__egc *egc,
libxl__multidev *multidev,
for (i = 0; i < d_config->num_p9s; i++)
libxl__device_add(gc, domid, &libxl__p9_devtype, &d_config->p9s[i]);
+ for (i = 0; i < d_config->num_pvcallss; i++)
+ libxl__device_add(gc, domid, &libxl__pvcalls_devtype,
&d_config->pvcallss[i]);
+
switch (d_config->c_info.type) {
case LIBXL_DOMAIN_TYPE_HVM:
{
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 506687f..e9edfac 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -3648,6 +3648,7 @@ extern const struct libxl_device_type
libxl__usbdev_devtype;
extern const struct libxl_device_type libxl__pcidev_devtype;
extern const struct libxl_device_type libxl__vdispl_devtype;
extern const struct libxl_device_type libxl__p9_devtype;
+extern const struct libxl_device_type libxl__pvcalls_devtype;
extern const struct libxl_device_type *device_type_tbl[];
diff --git a/tools/libxl/libxl_pvcalls.c b/tools/libxl/libxl_pvcalls.c
new file mode 100644
index 0000000..a285343
--- /dev/null
+++ b/tools/libxl/libxl_pvcalls.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2018 Aporeto
+ * Author Stefano Stabellini <stefano@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; version 2.1 only. with the special
+ * exception on linking described in file LICENSE.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ */
+
+#include "libxl_osdeps.h"
+
+#include "libxl_internal.h"
+
+static int libxl__device_pvcalls_setdefault(libxl__gc *gc, uint32_t domid,
+ libxl_device_pvcalls *pvcalls,
+ bool hotplug)
+{
+ return libxl__resolve_domid(gc, pvcalls->backend_domname,
+ &pvcalls->backend_domid);
+}
+
+static LIBXL_DEFINE_UPDATE_DEVID(pvcalls)
+static LIBXL_DEFINE_DEVICE_FROM_TYPE(pvcalls)
+
+#define libxl__add_pvcallss NULL
+#define libxl_device_pvcalls_list NULL
+#define libxl_device_pvcalls_compare NULL
+
+LIBXL_DEFINE_DEVICE_REMOVE(pvcalls)
+
+DEFINE_DEVICE_TYPE_STRUCT(pvcalls, PVCALLS);
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index 3503812..89c6ef6 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -790,6 +790,12 @@ libxl_device_p9 = Struct("device_p9", [
("devid", libxl_devid),
])
+libxl_device_pvcalls = Struct("device_pvcalls", [
+ ("backend_domid", libxl_domid),
+ ("backend_domname", string),
+ ("devid", libxl_devid),
+])
+
libxl_device_channel = Struct("device_channel", [
("backend_domid", libxl_domid),
("backend_domname", string),
@@ -829,6 +835,7 @@ libxl_domain_config = Struct("domain_config", [
("vkbs", Array(libxl_device_vkb, "num_vkbs")),
("vtpms", Array(libxl_device_vtpm, "num_vtpms")),
("p9s", Array(libxl_device_p9, "num_p9s")),
+ ("pvcallss", Array(libxl_device_pvcalls, "num_pvcallss")),
("vdispls", Array(libxl_device_vdispl, "num_vdispls")),
# a channel manifests as a console with a name,
# see docs/misc/channels.txt
diff --git a/tools/libxl/libxl_types_internal.idl
b/tools/libxl/libxl_types_internal.idl
index d144dd6..f2ff017 100644
--- a/tools/libxl/libxl_types_internal.idl
+++ b/tools/libxl/libxl_types_internal.idl
@@ -28,6 +28,7 @@ libxl__device_kind = Enumeration("device_kind", [
(11, "9PFS"),
(12, "VDISPL"),
(13, "VUART"),
+ (14, "PVCALLS"),
])
libxl__console_backend = Enumeration("console_backend", [
diff --git a/tools/xl/xl_parse.c b/tools/xl/xl_parse.c
index f684254..da051ed 100644
--- a/tools/xl/xl_parse.c
+++ b/tools/xl/xl_parse.c
@@ -860,7 +860,7 @@ void parse_config_data(const char *config_source,
long l, vcpus = 0;
XLU_Config *config;
XLU_ConfigList *cpus, *vbds, *nics, *pcis, *cvfbs, *cpuids, *vtpms,
- *usbctrls, *usbdevs, *p9devs, *vdispls;
+ *usbctrls, *usbdevs, *p9devs, *vdispls, *pvcalls_devs;
XLU_ConfigList *channels, *ioports, *irqs, *iomem, *viridian, *dtdevs,
*mca_caps;
int num_ioports, num_irqs, num_iomem, num_cpus, num_viridian, num_mca_caps;
@@ -1691,6 +1691,41 @@ void parse_config_data(const char *config_source,
}
}
+ if (!xlu_cfg_get_list(config, "pvcalls", &pvcalls_devs, 0, 0)) {
+ d_config->num_pvcallss = 0;
+ d_config->pvcallss = NULL;
+ while ((buf = xlu_cfg_get_listitem (pvcalls_devs,
d_config->num_pvcallss)) != NULL) {
+ libxl_device_pvcalls *pvcalls;
+ char *backend = NULL;
+ char *p, *p2, *buf2;
+ pvcalls = ARRAY_EXTEND_INIT(d_config->pvcallss,
+ d_config->num_pvcallss,
+ libxl_device_pvcalls_init);
+
+ buf2 = strdup(buf);
+ p = strtok(buf2, ",");
+ if (p) {
+ do {
+ while (*p == ' ')
+ ++p;
+ if ((p2 = strchr(p, '=')) == NULL)
+ break;
+ *p2 = '\0';
+ if(!strcmp(p, "backend")) {
+ backend = strdup(p2 + 1);
+ } else {
+ fprintf(stderr, "Unknown string `%s' in pvcalls spec\n",
p);
+ exit(1);
+ }
+ } while ((p = strtok(NULL, ",")) != NULL);
+ }
+ free(buf2);
+
+ if (backend)
+ replace_string(&pvcalls->backend_domname, backend);
+ }
+ }
+
if (!xlu_cfg_get_list (config, "channel", &channels, 0, 0)) {
d_config->num_channels = 0;
d_config->channels = NULL;
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