Create vhost_cuse directory and move vhost-net-cdev.c into vhost_cuse.
vhost-cuse driver will be divided into two parts: cuse driver specific message
handling(in cuse directory) and common message handling(in virtio-net.c).
vhost ioctl message is pre-processed in cuse and then sent to virtio-net
if is not terminated.
virtio-net.c provides common message handling for both vhost-cuse and vhost-user.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Tetsuya Mukawa <mukawa@igel.co.jp>
LIBABIVER := 1
-CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3 -D_FILE_OFFSET_BITS=64 -lfuse
+CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -I vhost_cuse -O3 -D_FILE_OFFSET_BITS=64 -lfuse
LDFLAGS += -lfuse
# all source are stored in SRCS-y
-SRCS-$(CONFIG_RTE_LIBRTE_VHOST) := vhost-net-cdev.c virtio-net.c vhost_rxtx.c
+SRCS-$(CONFIG_RTE_LIBRTE_VHOST) := vhost_cuse/vhost-net-cdev.c virtio-net.c vhost_rxtx.c
# install includes
SYMLINK-$(CONFIG_RTE_LIBRTE_VHOST)-include += rte_virtio_net.h
+++ /dev/null
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <errno.h>
-#include <fuse/cuse_lowlevel.h>
-#include <linux/limits.h>
-#include <linux/vhost.h>
-#include <stdint.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <rte_ethdev.h>
-#include <rte_log.h>
-#include <rte_string_fns.h>
-#include <rte_virtio_net.h>
-
-#include "vhost-net-cdev.h"
-
-#define FUSE_OPT_DUMMY "\0\0"
-#define FUSE_OPT_FORE "-f\0\0"
-#define FUSE_OPT_NOMULTI "-s\0\0"
-
-static const uint32_t default_major = 231;
-static const uint32_t default_minor = 1;
-static const char cuse_device_name[] = "/dev/cuse";
-static const char default_cdev[] = "vhost-net";
-
-static struct fuse_session *session;
-static struct vhost_net_device_ops const *ops;
-
-/*
- * Returns vhost_device_ctx from given fuse_req_t. The index is populated later
- * when the device is added to the device linked list.
- */
-static struct vhost_device_ctx
-fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
-{
- struct vhost_device_ctx ctx;
- struct fuse_ctx const *const req_ctx = fuse_req_ctx(req);
-
- ctx.pid = req_ctx->pid;
- ctx.fh = fi->fh;
-
- return ctx;
-}
-
-/*
- * When the device is created in QEMU it gets initialised here and
- * added to the device linked list.
- */
-static void
-vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
-{
- struct vhost_device_ctx ctx = fuse_req_to_vhost_ctx(req, fi);
- int err = 0;
-
- err = ops->new_device(ctx);
- if (err == -1) {
- fuse_reply_err(req, EPERM);
- return;
- }
-
- fi->fh = err;
-
- RTE_LOG(INFO, VHOST_CONFIG,
- "(%"PRIu64") Device configuration started\n", fi->fh);
- fuse_reply_open(req, fi);
-}
-
-/*
- * When QEMU is shutdown or killed the device gets released.
- */
-static void
-vhost_net_release(fuse_req_t req, struct fuse_file_info *fi)
-{
- int err = 0;
- struct vhost_device_ctx ctx = fuse_req_to_vhost_ctx(req, fi);
-
- ops->destroy_device(ctx);
- RTE_LOG(INFO, VHOST_CONFIG, "(%"PRIu64") Device released\n", ctx.fh);
- fuse_reply_err(req, err);
-}
-
-/*
- * Boilerplate code for CUSE IOCTL
- * Implicit arguments: ctx, req, result.
- */
-#define VHOST_IOCTL(func) do { \
- result = (func)(ctx); \
- fuse_reply_ioctl(req, result, NULL, 0); \
-} while (0)
-
-/*
- * Boilerplate IOCTL RETRY
- * Implicit arguments: req.
- */
-#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
- struct iovec iov_r = { arg, (size_r) }; \
- struct iovec iov_w = { arg, (size_w) }; \
- fuse_reply_ioctl_retry(req, &iov_r, \
- (size_r) ? 1 : 0, &iov_w, (size_w) ? 1 : 0);\
-} while (0)
-
-/*
- * Boilerplate code for CUSE Read IOCTL
- * Implicit arguments: ctx, req, result, in_bufsz, in_buf.
- */
-#define VHOST_IOCTL_R(type, var, func) do { \
- if (!in_bufsz) { \
- VHOST_IOCTL_RETRY(sizeof(type), 0);\
- } else { \
- (var) = *(const type*)in_buf; \
- result = func(ctx, &(var)); \
- fuse_reply_ioctl(req, result, NULL, 0);\
- } \
-} while (0)
-
-/*
- * Boilerplate code for CUSE Write IOCTL
- * Implicit arguments: ctx, req, result, out_bufsz.
- */
-#define VHOST_IOCTL_W(type, var, func) do { \
- if (!out_bufsz) { \
- VHOST_IOCTL_RETRY(0, sizeof(type));\
- } else { \
- result = (func)(ctx, &(var));\
- fuse_reply_ioctl(req, result, &(var), sizeof(type));\
- } \
-} while (0)
-
-/*
- * Boilerplate code for CUSE Read/Write IOCTL
- * Implicit arguments: ctx, req, result, in_bufsz, in_buf.
- */
-#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
- if (!in_bufsz) { \
- VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2));\
- } else { \
- (var1) = *(const type1*) (in_buf); \
- result = (func)(ctx, (var1), &(var2)); \
- fuse_reply_ioctl(req, result, &(var2), sizeof(type2));\
- } \
-} while (0)
-
-/*
- * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on the type
- * of IOCTL a buffer is requested to read or to write. This request is handled
- * by FUSE and the buffer is then given to CUSE.
- */
-static void
-vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
- struct fuse_file_info *fi, __rte_unused unsigned flags,
- const void *in_buf, size_t in_bufsz, size_t out_bufsz)
-{
- struct vhost_device_ctx ctx = fuse_req_to_vhost_ctx(req, fi);
- struct vhost_vring_file file;
- struct vhost_vring_state state;
- struct vhost_vring_addr addr;
- uint64_t features;
- uint32_t index;
- int result = 0;
-
- switch (cmd) {
- case VHOST_NET_SET_BACKEND:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_backend);
- break;
-
- case VHOST_GET_FEATURES:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
- VHOST_IOCTL_W(uint64_t, features, ops->get_features);
- break;
-
- case VHOST_SET_FEATURES:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
- VHOST_IOCTL_R(uint64_t, features, ops->set_features);
- break;
-
- case VHOST_RESET_OWNER:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
- VHOST_IOCTL(ops->reset_owner);
- break;
-
- case VHOST_SET_OWNER:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
- VHOST_IOCTL(ops->set_owner);
- break;
-
- case VHOST_SET_MEM_TABLE:
- /*TODO fix race condition.*/
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
- static struct vhost_memory mem_temp;
-
- switch (in_bufsz) {
- case 0:
- VHOST_IOCTL_RETRY(sizeof(struct vhost_memory), 0);
- break;
-
- case sizeof(struct vhost_memory):
- mem_temp = *(const struct vhost_memory *) in_buf;
-
- if (mem_temp.nregions > 0) {
- VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) +
- (sizeof(struct vhost_memory_region) *
- mem_temp.nregions), 0);
- } else {
- result = -1;
- fuse_reply_ioctl(req, result, NULL, 0);
- }
- break;
-
- default:
- result = ops->set_mem_table(ctx,
- in_buf, mem_temp.nregions);
- if (result)
- fuse_reply_err(req, EINVAL);
- else
- fuse_reply_ioctl(req, result, NULL, 0);
- }
- break;
-
- case VHOST_SET_VRING_NUM:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_state, state,
- ops->set_vring_num);
- break;
-
- case VHOST_SET_VRING_BASE:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_state, state,
- ops->set_vring_base);
- break;
-
- case VHOST_GET_VRING_BASE:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
- VHOST_IOCTL_RW(uint32_t, index,
- struct vhost_vring_state, state, ops->get_vring_base);
- break;
-
- case VHOST_SET_VRING_ADDR:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_addr, addr,
- ops->set_vring_addr);
- break;
-
- case VHOST_SET_VRING_KICK:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_file, file,
- ops->set_vring_kick);
- break;
-
- case VHOST_SET_VRING_CALL:
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_file, file,
- ops->set_vring_call);
- break;
-
- default:
- RTE_LOG(ERR, VHOST_CONFIG,
- "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
- result = -1;
- fuse_reply_ioctl(req, result, NULL, 0);
- }
-
- if (result < 0)
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
- else
- LOG_DEBUG(VHOST_CONFIG,
- "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
-}
-
-/*
- * Structure handling open, release and ioctl function pointers is populated.
- */
-static const struct cuse_lowlevel_ops vhost_net_ops = {
- .open = vhost_net_open,
- .release = vhost_net_release,
- .ioctl = vhost_net_ioctl,
-};
-
-/*
- * cuse_info is populated and used to register the cuse device.
- * vhost_net_device_ops are also passed when the device is registered in app.
- */
-int
-rte_vhost_driver_register(const char *dev_name)
-{
- struct cuse_info cuse_info;
- char device_name[PATH_MAX] = "";
- char char_device_name[PATH_MAX] = "";
- const char *device_argv[] = { device_name };
-
- char fuse_opt_dummy[] = FUSE_OPT_DUMMY;
- char fuse_opt_fore[] = FUSE_OPT_FORE;
- char fuse_opt_nomulti[] = FUSE_OPT_NOMULTI;
- char *fuse_argv[] = {fuse_opt_dummy, fuse_opt_fore, fuse_opt_nomulti};
-
- if (access(cuse_device_name, R_OK | W_OK) < 0) {
- RTE_LOG(ERR, VHOST_CONFIG,
- "char device %s can't be accessed, maybe not exist\n",
- cuse_device_name);
- return -1;
- }
-
- /*
- * The device name is created. This is passed to QEMU so that it can
- * register the device with our application.
- */
- snprintf(device_name, PATH_MAX, "DEVNAME=%s", dev_name);
- snprintf(char_device_name, PATH_MAX, "/dev/%s", dev_name);
-
- /* Check if device already exists. */
- if (access(char_device_name, F_OK) != -1) {
- RTE_LOG(ERR, VHOST_CONFIG,
- "char device %s already exists\n", char_device_name);
- return -1;
- }
-
- memset(&cuse_info, 0, sizeof(cuse_info));
- cuse_info.dev_major = default_major;
- cuse_info.dev_minor = default_minor;
- cuse_info.dev_info_argc = 1;
- cuse_info.dev_info_argv = device_argv;
- cuse_info.flags = CUSE_UNRESTRICTED_IOCTL;
-
- ops = get_virtio_net_callbacks();
-
- session = cuse_lowlevel_setup(3, fuse_argv,
- &cuse_info, &vhost_net_ops, 0, NULL);
- if (session == NULL)
- return -1;
-
- return 0;
-}
-
-/**
- * The CUSE session is launched allowing the application to receive open,
- * release and ioctl calls.
- */
-int
-rte_vhost_driver_session_start(void)
-{
- fuse_session_loop(session);
-
- return 0;
-}
--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <errno.h>
+#include <fuse/cuse_lowlevel.h>
+#include <linux/limits.h>
+#include <linux/vhost.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <rte_ethdev.h>
+#include <rte_log.h>
+#include <rte_string_fns.h>
+#include <rte_virtio_net.h>
+
+#include "vhost-net-cdev.h"
+
+#define FUSE_OPT_DUMMY "\0\0"
+#define FUSE_OPT_FORE "-f\0\0"
+#define FUSE_OPT_NOMULTI "-s\0\0"
+
+static const uint32_t default_major = 231;
+static const uint32_t default_minor = 1;
+static const char cuse_device_name[] = "/dev/cuse";
+static const char default_cdev[] = "vhost-net";
+
+static struct fuse_session *session;
+static struct vhost_net_device_ops const *ops;
+
+/*
+ * Returns vhost_device_ctx from given fuse_req_t. The index is populated later
+ * when the device is added to the device linked list.
+ */
+static struct vhost_device_ctx
+fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
+{
+ struct vhost_device_ctx ctx;
+ struct fuse_ctx const *const req_ctx = fuse_req_ctx(req);
+
+ ctx.pid = req_ctx->pid;
+ ctx.fh = fi->fh;
+
+ return ctx;
+}
+
+/*
+ * When the device is created in QEMU it gets initialised here and
+ * added to the device linked list.
+ */
+static void
+vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
+{
+ struct vhost_device_ctx ctx = fuse_req_to_vhost_ctx(req, fi);
+ int err = 0;
+
+ err = ops->new_device(ctx);
+ if (err == -1) {
+ fuse_reply_err(req, EPERM);
+ return;
+ }
+
+ fi->fh = err;
+
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "(%"PRIu64") Device configuration started\n", fi->fh);
+ fuse_reply_open(req, fi);
+}
+
+/*
+ * When QEMU is shutdown or killed the device gets released.
+ */
+static void
+vhost_net_release(fuse_req_t req, struct fuse_file_info *fi)
+{
+ int err = 0;
+ struct vhost_device_ctx ctx = fuse_req_to_vhost_ctx(req, fi);
+
+ ops->destroy_device(ctx);
+ RTE_LOG(INFO, VHOST_CONFIG, "(%"PRIu64") Device released\n", ctx.fh);
+ fuse_reply_err(req, err);
+}
+
+/*
+ * Boilerplate code for CUSE IOCTL
+ * Implicit arguments: ctx, req, result.
+ */
+#define VHOST_IOCTL(func) do { \
+ result = (func)(ctx); \
+ fuse_reply_ioctl(req, result, NULL, 0); \
+} while (0)
+
+/*
+ * Boilerplate IOCTL RETRY
+ * Implicit arguments: req.
+ */
+#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
+ struct iovec iov_r = { arg, (size_r) }; \
+ struct iovec iov_w = { arg, (size_w) }; \
+ fuse_reply_ioctl_retry(req, &iov_r, \
+ (size_r) ? 1 : 0, &iov_w, (size_w) ? 1 : 0);\
+} while (0)
+
+/*
+ * Boilerplate code for CUSE Read IOCTL
+ * Implicit arguments: ctx, req, result, in_bufsz, in_buf.
+ */
+#define VHOST_IOCTL_R(type, var, func) do { \
+ if (!in_bufsz) { \
+ VHOST_IOCTL_RETRY(sizeof(type), 0);\
+ } else { \
+ (var) = *(const type*)in_buf; \
+ result = func(ctx, &(var)); \
+ fuse_reply_ioctl(req, result, NULL, 0);\
+ } \
+} while (0)
+
+/*
+ * Boilerplate code for CUSE Write IOCTL
+ * Implicit arguments: ctx, req, result, out_bufsz.
+ */
+#define VHOST_IOCTL_W(type, var, func) do { \
+ if (!out_bufsz) { \
+ VHOST_IOCTL_RETRY(0, sizeof(type));\
+ } else { \
+ result = (func)(ctx, &(var));\
+ fuse_reply_ioctl(req, result, &(var), sizeof(type));\
+ } \
+} while (0)
+
+/*
+ * Boilerplate code for CUSE Read/Write IOCTL
+ * Implicit arguments: ctx, req, result, in_bufsz, in_buf.
+ */
+#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
+ if (!in_bufsz) { \
+ VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2));\
+ } else { \
+ (var1) = *(const type1*) (in_buf); \
+ result = (func)(ctx, (var1), &(var2)); \
+ fuse_reply_ioctl(req, result, &(var2), sizeof(type2));\
+ } \
+} while (0)
+
+/*
+ * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on the type
+ * of IOCTL a buffer is requested to read or to write. This request is handled
+ * by FUSE and the buffer is then given to CUSE.
+ */
+static void
+vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
+ struct fuse_file_info *fi, __rte_unused unsigned flags,
+ const void *in_buf, size_t in_bufsz, size_t out_bufsz)
+{
+ struct vhost_device_ctx ctx = fuse_req_to_vhost_ctx(req, fi);
+ struct vhost_vring_file file;
+ struct vhost_vring_state state;
+ struct vhost_vring_addr addr;
+ uint64_t features;
+ uint32_t index;
+ int result = 0;
+
+ switch (cmd) {
+ case VHOST_NET_SET_BACKEND:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_backend);
+ break;
+
+ case VHOST_GET_FEATURES:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
+ VHOST_IOCTL_W(uint64_t, features, ops->get_features);
+ break;
+
+ case VHOST_SET_FEATURES:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
+ VHOST_IOCTL_R(uint64_t, features, ops->set_features);
+ break;
+
+ case VHOST_RESET_OWNER:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
+ VHOST_IOCTL(ops->reset_owner);
+ break;
+
+ case VHOST_SET_OWNER:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
+ VHOST_IOCTL(ops->set_owner);
+ break;
+
+ case VHOST_SET_MEM_TABLE:
+ /*TODO fix race condition.*/
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
+ static struct vhost_memory mem_temp;
+
+ switch (in_bufsz) {
+ case 0:
+ VHOST_IOCTL_RETRY(sizeof(struct vhost_memory), 0);
+ break;
+
+ case sizeof(struct vhost_memory):
+ mem_temp = *(const struct vhost_memory *) in_buf;
+
+ if (mem_temp.nregions > 0) {
+ VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) +
+ (sizeof(struct vhost_memory_region) *
+ mem_temp.nregions), 0);
+ } else {
+ result = -1;
+ fuse_reply_ioctl(req, result, NULL, 0);
+ }
+ break;
+
+ default:
+ result = ops->set_mem_table(ctx,
+ in_buf, mem_temp.nregions);
+ if (result)
+ fuse_reply_err(req, EINVAL);
+ else
+ fuse_reply_ioctl(req, result, NULL, 0);
+ }
+ break;
+
+ case VHOST_SET_VRING_NUM:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_state, state,
+ ops->set_vring_num);
+ break;
+
+ case VHOST_SET_VRING_BASE:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_state, state,
+ ops->set_vring_base);
+ break;
+
+ case VHOST_GET_VRING_BASE:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
+ VHOST_IOCTL_RW(uint32_t, index,
+ struct vhost_vring_state, state, ops->get_vring_base);
+ break;
+
+ case VHOST_SET_VRING_ADDR:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_addr, addr,
+ ops->set_vring_addr);
+ break;
+
+ case VHOST_SET_VRING_KICK:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_file, file,
+ ops->set_vring_kick);
+ break;
+
+ case VHOST_SET_VRING_CALL:
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_file, file,
+ ops->set_vring_call);
+ break;
+
+ default:
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
+ result = -1;
+ fuse_reply_ioctl(req, result, NULL, 0);
+ }
+
+ if (result < 0)
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
+ else
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
+}
+
+/*
+ * Structure handling open, release and ioctl function pointers is populated.
+ */
+static const struct cuse_lowlevel_ops vhost_net_ops = {
+ .open = vhost_net_open,
+ .release = vhost_net_release,
+ .ioctl = vhost_net_ioctl,
+};
+
+/*
+ * cuse_info is populated and used to register the cuse device.
+ * vhost_net_device_ops are also passed when the device is registered in app.
+ */
+int
+rte_vhost_driver_register(const char *dev_name)
+{
+ struct cuse_info cuse_info;
+ char device_name[PATH_MAX] = "";
+ char char_device_name[PATH_MAX] = "";
+ const char *device_argv[] = { device_name };
+
+ char fuse_opt_dummy[] = FUSE_OPT_DUMMY;
+ char fuse_opt_fore[] = FUSE_OPT_FORE;
+ char fuse_opt_nomulti[] = FUSE_OPT_NOMULTI;
+ char *fuse_argv[] = {fuse_opt_dummy, fuse_opt_fore, fuse_opt_nomulti};
+
+ if (access(cuse_device_name, R_OK | W_OK) < 0) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "char device %s can't be accessed, maybe not exist\n",
+ cuse_device_name);
+ return -1;
+ }
+
+ /*
+ * The device name is created. This is passed to QEMU so that it can
+ * register the device with our application.
+ */
+ snprintf(device_name, PATH_MAX, "DEVNAME=%s", dev_name);
+ snprintf(char_device_name, PATH_MAX, "/dev/%s", dev_name);
+
+ /* Check if device already exists. */
+ if (access(char_device_name, F_OK) != -1) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "char device %s already exists\n", char_device_name);
+ return -1;
+ }
+
+ memset(&cuse_info, 0, sizeof(cuse_info));
+ cuse_info.dev_major = default_major;
+ cuse_info.dev_minor = default_minor;
+ cuse_info.dev_info_argc = 1;
+ cuse_info.dev_info_argv = device_argv;
+ cuse_info.flags = CUSE_UNRESTRICTED_IOCTL;
+
+ ops = get_virtio_net_callbacks();
+
+ session = cuse_lowlevel_setup(3, fuse_argv,
+ &cuse_info, &vhost_net_ops, 0, NULL);
+ if (session == NULL)
+ return -1;
+
+ return 0;
+}
+
+/**
+ * The CUSE session is launched allowing the application to receive open,
+ * release and ioctl calls.
+ */
+int
+rte_vhost_driver_session_start(void)
+{
+ fuse_session_loop(session);
+
+ return 0;
+}
git.droids-corp.org / dpdk.git / commitdiff