Fix alignment issues, lengthy lines, misordered type and other coding style issues.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
/*-
- * * GPL LICENSE SUMMARY
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * *
- * * This program is free software; you can redistribute it and/or modify
- * * it under the terms of version 2 of the GNU General Public License as
- * * published by the Free Software Foundation.
- * *
- * * 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
- * * General Public License for more details.
- * *
- * * You should have received a copy of the GNU General Public License
- * * along with this program; if not, write to the Free Software
- * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * * The full GNU General Public License is included in this distribution
- * * in the file called LICENSE.GPL.
- * *
- * * Contact Information:
- * * Intel Corporation
- * */
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Corporation
+ */
#include <linux/eventfd.h>
#include <linux/miscdevice.h>
* get_files_struct is copied from fs/file.c
*/
struct files_struct *
-get_files_struct (struct task_struct *task)
+get_files_struct(struct task_struct *task)
{
struct files_struct *files;
- task_lock (task);
+ task_lock(task);
files = task->files;
if (files)
- atomic_inc (&files->count);
- task_unlock (task);
+ atomic_inc(&files->count);
+ task_unlock(task);
return files;
}
* put_files_struct is extracted from fs/file.c
*/
void
-put_files_struct (struct files_struct *files)
+put_files_struct(struct files_struct *files)
{
- if (atomic_dec_and_test (&files->count))
- {
- BUG ();
- }
+ if (atomic_dec_and_test(&files->count))
+ BUG();
}
static long
-eventfd_link_ioctl (struct file *f, unsigned int ioctl, unsigned long arg)
+eventfd_link_ioctl(struct file *f, unsigned int ioctl, unsigned long arg)
{
void __user *argp = (void __user *) arg;
struct task_struct *task_target = NULL;
struct fdtable *fdt;
struct eventfd_copy eventfd_copy;
- switch (ioctl)
- {
- case EVENTFD_COPY:
- if (copy_from_user (&eventfd_copy, argp, sizeof (struct eventfd_copy)))
- return -EFAULT;
-
- /*
- * Find the task struct for the target pid
- */
- task_target =
- pid_task (find_vpid (eventfd_copy.target_pid), PIDTYPE_PID);
- if (task_target == NULL)
- {
- printk (KERN_DEBUG "Failed to get mem ctx for target pid\n");
- return -EFAULT;
- }
-
- files = get_files_struct (current);
- if (files == NULL)
- {
- printk (KERN_DEBUG "Failed to get files struct\n");
- return -EFAULT;
- }
-
- rcu_read_lock ();
- file = fcheck_files (files, eventfd_copy.source_fd);
- if (file)
- {
- if (file->f_mode & FMODE_PATH
- || !atomic_long_inc_not_zero (&file->f_count))
- file = NULL;
- }
- rcu_read_unlock ();
- put_files_struct (files);
-
- if (file == NULL)
- {
- printk (KERN_DEBUG "Failed to get file from source pid\n");
- return 0;
- }
-
- /*
- * Release the existing eventfd in the source process
- */
- spin_lock (&files->file_lock);
- filp_close (file, files);
- fdt = files_fdtable (files);
- fdt->fd[eventfd_copy.source_fd] = NULL;
- spin_unlock (&files->file_lock);
-
- /*
- * Find the file struct associated with the target fd.
- */
-
- files = get_files_struct (task_target);
- if (files == NULL)
- {
- printk (KERN_DEBUG "Failed to get files struct\n");
- return -EFAULT;
- }
-
- rcu_read_lock ();
- file = fcheck_files (files, eventfd_copy.target_fd);
- if (file)
- {
- if (file->f_mode & FMODE_PATH
- || !atomic_long_inc_not_zero (&file->f_count))
+ switch (ioctl) {
+ case EVENTFD_COPY:
+ if (copy_from_user(&eventfd_copy, argp,
+ sizeof(struct eventfd_copy)))
+ return -EFAULT;
+
+ /*
+ * Find the task struct for the target pid
+ */
+ task_target =
+ pid_task(find_vpid(eventfd_copy.target_pid), PIDTYPE_PID);
+ if (task_target == NULL) {
+ pr_debug("Failed to get mem ctx for target pid\n");
+ return -EFAULT;
+ }
+
+ files = get_files_struct(current);
+ if (files == NULL) {
+ pr_debug("Failed to get files struct\n");
+ return -EFAULT;
+ }
+
+ rcu_read_lock();
+ file = fcheck_files(files, eventfd_copy.source_fd);
+ if (file) {
+ if (file->f_mode & FMODE_PATH ||
+ !atomic_long_inc_not_zero(&file->f_count))
+ file = NULL;
+ }
+ rcu_read_unlock();
+ put_files_struct(files);
+
+ if (file == NULL) {
+ pr_debug("Failed to get file from source pid\n");
+ return 0;
+ }
+
+ /*
+ * Release the existing eventfd in the source process
+ */
+ spin_lock(&files->file_lock);
+ filp_close(file, files);
+ fdt = files_fdtable(files);
+ fdt->fd[eventfd_copy.source_fd] = NULL;
+ spin_unlock(&files->file_lock);
+
+ /*
+ * Find the file struct associated with the target fd.
+ */
+
+ files = get_files_struct(task_target);
+ if (files == NULL) {
+ pr_debug("Failed to get files struct\n");
+ return -EFAULT;
+ }
+
+ rcu_read_lock();
+ file = fcheck_files(files, eventfd_copy.target_fd);
+ if (file) {
+ if (file->f_mode & FMODE_PATH ||
+ !atomic_long_inc_not_zero(&file->f_count))
file = NULL;
- }
- rcu_read_unlock ();
- put_files_struct (files);
-
- if (file == NULL)
- {
- printk (KERN_DEBUG "Failed to get file from target pid\n");
- return 0;
- }
+ }
+ rcu_read_unlock();
+ put_files_struct(files);
+ if (file == NULL) {
+ pr_debug("Failed to get file from target pid\n");
+ return 0;
+ }
- /*
- * Install the file struct from the target process into the
- * file desciptor of the source process,
- */
+ /*
+ * Install the file struct from the target process into the
+ * file desciptor of the source process,
+ */
- fd_install (eventfd_copy.source_fd, file);
+ fd_install(eventfd_copy.source_fd, file);
- return 0;
+ return 0;
- default:
- return -ENOIOCTLCMD;
+ default:
+ return -ENOIOCTLCMD;
}
}
};
static int __init
-eventfd_link_init (void)
+eventfd_link_init(void)
{
- return misc_register (&eventfd_link_misc);
+ return misc_register(&eventfd_link_misc);
}
-module_init (eventfd_link_init);
+module_init(eventfd_link_init);
static void __exit
-eventfd_link_exit (void)
+eventfd_link_exit(void)
{
- misc_deregister (&eventfd_link_misc);
+ misc_deregister(&eventfd_link_misc);
}
-module_exit (eventfd_link_exit);
+module_exit(eventfd_link_exit);
-MODULE_VERSION ("0.0.1");
-MODULE_LICENSE ("GPL v2");
-MODULE_AUTHOR ("Anthony Fee");
-MODULE_DESCRIPTION ("Link eventfd");
-MODULE_ALIAS ("devname:eventfd-link");
+MODULE_VERSION("0.0.1");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Anthony Fee");
+MODULE_DESCRIPTION("Link eventfd");
+MODULE_ALIAS("devname:eventfd-link");
/*-
- * * This file is provided under a dual BSD/GPLv2 license. When using or
- * * redistributing this file, you may do so under either license.
- * *
- * * GPL LICENSE SUMMARY
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * *
- * * This program is free software; you can redistribute it and/or modify
- * * it under the terms of version 2 of the GNU General Public License as
- * * published by the Free Software Foundation.
- * *
- * * 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
- * * General Public License for more details.
- * *
- * * You should have received a copy of the GNU General Public License
- * * along with this program; if not, write to the Free Software
- * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * * The full GNU General Public License is included in this distribution
- * * in the file called LICENSE.GPL.
- * *
- * * Contact Information:
- * * Intel Corporation
- * *
- * * 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.
- * *
- * */
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Corporation
+ *
+ * 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.
+ *
+ */
#ifndef _EVENTFD_LINK_H_
#define _EVENTFD_LINK_H_
/*
- * ioctl to copy an fd entry in calling process to an fd in a target process
+ * ioctl to copy an fd entry in calling process to an fd in a target process
*/
#define EVENTFD_COPY 1
/*
- * arguements for the EVENTFD_COPY ioctl
+ * arguements for the EVENTFD_COPY ioctl
*/
struct eventfd_copy {
- // fd in the target pid
- unsigned target_fd;
- // fd in the calling pid
- unsigned source_fd;
- // pid of the target pid
- pid_t target_pid;
+ unsigned target_fd; /* fd in the target pid */
+ unsigned source_fd; /* fd in the calling pid */
+ pid_t target_pid; /* pid of the target pid */
};
#endif /* _EVENTFD_LINK_H_ */
/**
* Device structure contains all configuration information relating to the device.
*/
-struct virtio_net
-{
+struct virtio_net {
struct vhost_virtqueue *virtqueue[VIRTIO_QNUM]; /**< Contains all virtqueue information. */
struct virtio_memory *mem; /**< QEMU memory and memory region information. */
uint64_t features; /**< Negotiated feature set. */
#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"
+#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 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;
+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.
+ * 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)
}
/*
- * When the device is created in QEMU it gets initialised here and added to the device linked list.
+ * 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)
fi->fh = err;
- RTE_LOG(INFO, VHOST_CONFIG, "(%"PRIu64") Device configuration started\n", fi->fh);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "(%"PRIu64") Device configuration started\n", fi->fh);
fuse_reply_open(req, fi);
}
* Boilerplate code for CUSE IOCTL
* Implicit arguments: ctx, req, result.
*/
-#define VHOST_IOCTL(func) do { \
- result = (func)(ctx); \
+#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); \
+#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); \
- } \
+#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
+ * 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)); \
- } \
+#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)); \
- } \
+#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.
+ * 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,
switch (cmd) {
case VHOST_NET_SET_BACKEND:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
static struct vhost_memory mem_temp;
switch (in_bufsz) {
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);
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
else
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
}
/*
};
/*
- * cuse_info is populated and used to register the cuse device. vhost_net_device_ops are
- * also passed when the device is registered in main.c.
+ * 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)
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, "Character device %s can't be accessed, maybe not exist\n", cuse_device_name);
+ 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.
+ * 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, "Character device %s already exists\n", char_device_name);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "char device %s already exists\n", char_device_name);
return -1;
}
ops = get_virtio_net_callbacks();
session = cuse_lowlevel_setup(3, fuse_argv,
- &cuse_info, &vhost_net_ops, 0, NULL);
+ &cuse_info, &vhost_net_ops, 0, NULL);
if (session == NULL)
return -1;
}
/**
- * The CUSE session is launched allowing the application to receive open, release and ioctl calls.
+ * The CUSE session is launched allowing the application to receive open,
+ * release and ioctl calls.
*/
int
rte_vhost_driver_session_start(void)
/**
* This function adds buffers to the virtio devices RX virtqueue. Buffers can
* be received from the physical port or from another virtio device. A packet
- * count is returned to indicate the number of packets that were succesfully
+ * count is returned to indicate the number of packets that are succesfully
* added to the RX queue. This function works when mergeable is disabled.
*/
static inline uint32_t __attribute__((always_inline))
count = (count > MAX_PKT_BURST) ? MAX_PKT_BURST : count;
/*
- * As many data cores may want access to available buffers,
+ * As many data cores may want access to available buffers,
* they need to be reserved.
*/
do {
}
/* Update used ring with desc information */
- vq->used->ring[res_cur_idx & (vq->size - 1)].id = head[packet_success];
+ vq->used->ring[res_cur_idx & (vq->size - 1)].id =
+ head[packet_success];
vq->used->ring[res_cur_idx & (vq->size - 1)].len = packet_len;
/* Copy mbuf data to buffer */
}
/*
- * This function adds buffers to the virtio devices RX virtqueue. Buffers can
- * be received from the physical port or from another virtio device. A packet
- * count is returned to indicate the number of packets that were succesfully
- * added to the RX queue. This function works for mergeable RX.
+ * This function works for mergeable RX.
*/
static inline uint32_t __attribute__((always_inline))
virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id,
if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
eventfd_write((int)vq->kickfd, 1);
return entry_success;
-
}
#include "vhost-net-cdev.h"
#include "eventfd_link/eventfd_link.h"
-/**
+/*
* Device linked list structure for configuration.
*/
struct virtio_net_config_ll {
- struct virtio_net dev; /* Virtio device.*/
- struct virtio_net_config_ll *next; /* Next entry on linked list.*/
+ struct virtio_net dev; /* Virtio device.*/
+ struct virtio_net_config_ll *next; /* Next dev on linked list.*/
};
const char eventfd_cdev[] = "/dev/eventfd-link";
-/* device ops to add/remove device to data core. */
+/* device ops to add/remove device to/from data core. */
static struct virtio_net_device_ops const *notify_ops;
-/* Root address of the linked list in the configuration core. */
-static struct virtio_net_config_ll *ll_root;
+/* root address of the linked list of managed virtio devices */
+static struct virtio_net_config_ll *ll_root;
-/* Features supported by this application. RX merge buffers are enabled by default. */
+/* Features supported by this lib. */
#define VHOST_SUPPORTED_FEATURES (1ULL << VIRTIO_NET_F_MRG_RXBUF)
static uint64_t VHOST_FEATURES = VHOST_SUPPORTED_FEATURES;
/* Line size for reading maps file. */
-const uint32_t BUFSIZE = PATH_MAX;
+static const uint32_t BUFSIZE = PATH_MAX;
/* Size of prot char array in procmap. */
#define PROT_SZ 5
/* Structure containing information gathered from maps file. */
struct procmap {
- uint64_t va_start; /* Start virtual address in file. */
- uint64_t len; /* Size of file. */
- uint64_t pgoff; /* Not used. */
- uint32_t maj; /* Not used. */
- uint32_t min; /* Not used. */
- uint32_t ino; /* Not used. */
- char prot[PROT_SZ]; /* Not used. */
- char fname[PATH_MAX];/* File name. */
+ uint64_t va_start; /* Start virtual address in file. */
+ uint64_t len; /* Size of file. */
+ uint64_t pgoff; /* Not used. */
+ uint32_t maj; /* Not used. */
+ uint32_t min; /* Not used. */
+ uint32_t ino; /* Not used. */
+ char prot[PROT_SZ]; /* Not used. */
+ char fname[PATH_MAX]; /* File name. */
};
/*
- * Converts QEMU virtual address to Vhost virtual address. This function is used
- * to convert the ring addresses to our address space.
+ * Converts QEMU virtual address to Vhost virtual address. This function is
+ * used to convert the ring addresses to our address space.
*/
static uint64_t
qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
region = &dev->mem->regions[regionidx];
if ((qemu_va >= region->userspace_address) &&
- (qemu_va <= region->userspace_address +
- region->memory_size)) {
+ (qemu_va <= region->userspace_address +
+ region->memory_size)) {
vhost_va = dev->mem->mapped_address + qemu_va -
dev->mem->base_address;
break;
}
/*
- * Locate the file containing QEMU's memory space and map it to our address space.
+ * Locate the file containing QEMU's memory space and
+ * map it to our address space.
*/
static int
host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
char procdir[PATH_MAX];
char resolved_path[PATH_MAX];
char *path = NULL;
- FILE *fmap;
- void *map;
- uint8_t found = 0;
- char line[BUFSIZE];
+ FILE *fmap;
+ void *map;
+ uint8_t found = 0;
+ char line[BUFSIZE];
char dlm[] = "- : ";
char *str, *sp, *in[PROCMAP_SZ];
char *end = NULL;
while (fgets(line, BUFSIZE, fmap) != 0) {
str = line;
errno = 0;
- /* Split line in to fields. */
+ /* Split line into fields. */
for (i = 0; i < PROCMAP_SZ; i++) {
in[i] = strtok_r(str, &dlm[i], &sp);
if ((in[i] == NULL) || (errno != 0)) {
/* Convert/Copy each field as needed. */
procmap.va_start = strtoull(in[0], &end, 16);
- if ((in[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[0] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.len = strtoull(in[1], &end, 16);
- if ((in[1] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[1] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.pgoff = strtoull(in[3], &end, 16);
- if ((in[3] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[3] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.maj = strtoul(in[4], &end, 16);
- if ((in[4] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[4] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.min = strtoul(in[5], &end, 16);
- if ((in[5] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[5] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.ino = strtoul(in[6], &end, 16);
- if ((in[6] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[6] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
fclose(fmap);
if (!found) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find memory file in pid %d maps file\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find memory file in pid %d maps file\n",
+ dev->device_fh, pid);
return -1;
}
/* Find the guest memory file among the process fds. */
dp = opendir(procdir);
if (dp == NULL) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Cannot open pid %d process directory\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Cannot open pid %d process directory\n",
+ dev->device_fh, pid);
return -1;
-
}
found = 0;
closedir(dp);
if (found == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find memory file for pid %d\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find memory file for pid %d\n",
+ dev->device_fh, pid);
return -1;
}
/* Open the shared memory file and map the memory into this process. */
fd = open(memfile, O_RDWR);
if (fd == -1) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to open %s for pid %d\n", dev->device_fh, memfile, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to open %s for pid %d\n",
+ dev->device_fh, memfile, pid);
return -1;
}
- map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE ,
- MAP_POPULATE|MAP_SHARED, fd, 0);
+ map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE,
+ MAP_POPULATE|MAP_SHARED, fd, 0);
close(fd);
if (map == MAP_FAILED) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Error mapping the file %s for pid %d\n", dev->device_fh, memfile, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Error mapping the file %s for pid %d\n",
+ dev->device_fh, memfile, pid);
return -1;
}
mem->mapped_address = (uint64_t)(uintptr_t)map;
mem->mapped_size = procmap.len;
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n", dev->device_fh,
- memfile, resolved_path, (long long unsigned)mem->mapped_size, map);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n",
+ dev->device_fh,
+ memfile, resolved_path,
+ (unsigned long long)mem->mapped_size, map);
return 0;
}
}
/*
- * Searches the configuration core linked list and retrieves the device if it exists.
+ * Searches the configuration core linked list and
+ * retrieves the device if it exists.
*/
static struct virtio_net *
get_device(struct vhost_device_ctx ctx)
ll_dev = get_config_ll_entry(ctx);
- /* If a matching entry is found in the linked list, return the device in that entry. */
if (ll_dev)
return &ll_dev->dev;
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
return NULL;
}
/* If ll_dev == NULL then this is the first device so go to else */
if (ll_dev) {
/* If the 1st device_fh != 0 then we insert our device here. */
- if (ll_dev->dev.device_fh != 0) {
+ if (ll_dev->dev.device_fh != 0) {
new_ll_dev->dev.device_fh = 0;
new_ll_dev->next = ll_dev;
ll_root = new_ll_dev;
} else {
- /* Increment through the ll until we find un unused device_fh. Insert the device at that entry*/
- while ((ll_dev->next != NULL) && (ll_dev->dev.device_fh == (ll_dev->next->dev.device_fh - 1)))
+ /*
+ * Increment through the ll until we find un unused
+ * device_fh. Insert the device at that entry.
+ */
+ while ((ll_dev->next != NULL) &&
+ (ll_dev->dev.device_fh ==
+ (ll_dev->next->dev.device_fh - 1)))
ll_dev = ll_dev->next;
new_ll_dev->dev.device_fh = ll_dev->dev.device_fh + 1;
}
/*
- * Unmap any memory, close any file descriptors and free any memory owned by a device.
+ * Unmap any memory, close any file descriptors and
+ * free any memory owned by a device.
*/
static void
cleanup_device(struct virtio_net *dev)
free(ll_dev->dev.virtqueue[VIRTIO_TXQ]);
free(ll_dev);
}
+
/*
* Remove an entry from the device configuration linked list.
*/
{
uint64_t vq_offset;
- /* Virtqueues have already been malloced so we don't want to set them to NULL. */
+ /*
+ * Virtqueues have already been malloced so
+ * we don't want to set them to NULL.
+ */
vq_offset = offsetof(struct virtio_net, mem);
/* Set everything to 0. */
}
/*
- * Function is called from the CUSE release function. This function will cleanup
- * the device and remove it from device configuration linked list.
+ * Function is called from the CUSE release function. This function will
+ * cleanup the device and remove it from device configuration linked list.
*/
static void
destroy_device(struct vhost_device_ctx ctx)
/* Find the linked list entry for the device to be removed. */
ll_dev_cur_ctx = get_config_ll_entry(ctx);
while (ll_dev_cur != NULL) {
- /* If the device is found or a device that doesn't exist is found then it is removed. */
+ /*
+ * If the device is found or
+ * a device that doesn't exist is found then it is removed.
+ */
if (ll_dev_cur == ll_dev_cur_ctx) {
/*
- * If the device is running on a data core then call the function to remove it from
- * the data core.
+ * If the device is running on a data core then call
+ * the function to remove it from the data core.
*/
if ((ll_dev_cur->dev.flags & VIRTIO_DEV_RUNNING))
notify_ops->destroy_device(&(ll_dev_cur->dev));
- ll_dev_cur = rm_config_ll_entry(ll_dev_cur, ll_dev_last);
+ ll_dev_cur = rm_config_ll_entry(ll_dev_cur,
+ ll_dev_last);
} else {
ll_dev_last = ll_dev_cur;
ll_dev_cur = ll_dev_cur->next;
/*
* Called from CUSE IOCTL: VHOST_SET_OWNER
- * This function just returns success at the moment unless the device hasn't been initialised.
+ * This function just returns success at the moment unless
+ * the device hasn't been initialised.
*/
static int
set_owner(struct vhost_device_ctx ctx)
/*
* Called from CUSE IOCTL: VHOST_SET_FEATURES
- * We receive the negotiated set of features supported by us and the virtio device.
+ * We receive the negotiated features supported by us and the virtio device.
*/
static int
set_features(struct vhost_device_ctx ctx, uint64_t *pu)
/* Set the vhost_hlen depending on if VIRTIO_NET_F_MRG_RXBUF is set. */
if (dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX buffers enabled\n", dev->device_fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mergeable RX buffers enabled\n",
+ dev->device_fh);
dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr_mrg_rxbuf);
dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr_mrg_rxbuf);
} else {
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX buffers disabled\n", dev->device_fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mergeable RX buffers disabled\n",
+ dev->device_fh);
dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr);
dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
/*
* Called from CUSE IOCTL: VHOST_SET_MEM_TABLE
- * This function creates and populates the memory structure for the device. This includes
- * storing offsets used to translate buffer addresses.
+ * This function creates and populates the memory structure for the device.
+ * This includes storing offsets used to translate buffer addresses.
*/
static int
set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
mem = calloc(1, sizeof(struct virtio_memory) +
(sizeof(struct virtio_memory_regions) * nregions));
if (mem == NULL) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to allocate memory for dev->mem.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to allocate memory for dev->mem.\n",
+ dev->device_fh);
return -1;
}
mem_regions[regionidx].userspace_addr;
LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") REGION: %u - GPA: %p - QEMU VA: %p - SIZE (%"PRIu64")\n", dev->device_fh,
- regionidx, (void *)(uintptr_t)mem->regions[regionidx].guest_phys_address,
- (void *)(uintptr_t)mem->regions[regionidx].userspace_address,
- mem->regions[regionidx].memory_size);
+ regionidx,
+ (void *)(uintptr_t)mem->regions[regionidx].guest_phys_address,
+ (void *)(uintptr_t)mem->regions[regionidx].userspace_address,
+ mem->regions[regionidx].memory_size);
/*set the base address mapping*/
if (mem->regions[regionidx].guest_phys_address == 0x0) {
- mem->base_address = mem->regions[regionidx].userspace_address;
+ mem->base_address =
+ mem->regions[regionidx].userspace_address;
/* Map VM memory file */
- if (host_memory_map(dev, mem, ctx.pid, mem->base_address) != 0) {
+ if (host_memory_map(dev, mem, ctx.pid,
+ mem->base_address) != 0) {
free(mem);
return -1;
}
return -1;
}
- /* Check if all of our regions have valid mappings. Usually one does not exist in the QEMU memory file. */
+ /*
+ * Check if all of our regions have valid mappings.
+ * Usually one does not exist in the QEMU memory file.
+ */
valid_regions = mem->nregions;
for (regionidx = 0; regionidx < mem->nregions; regionidx++) {
- if ((mem->regions[regionidx].userspace_address < mem->base_address) ||
- (mem->regions[regionidx].userspace_address > (mem->base_address + mem->mapped_size)))
+ if ((mem->regions[regionidx].userspace_address <
+ mem->base_address) ||
+ (mem->regions[regionidx].userspace_address >
+ (mem->base_address + mem->mapped_size)))
valid_regions--;
}
- /* If a region does not have a valid mapping we rebuild our memory struct to contain only valid entries. */
+ /*
+ * If a region does not have a valid mapping,
+ * we rebuild our memory struct to contain only valid entries.
+ */
if (valid_regions != mem->nregions) {
LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Not all memory regions exist in the QEMU mem file. Re-populating mem structure\n",
dev->device_fh);
- /* Re-populate the memory structure with only valid regions. Invalid regions are over-written with memmove. */
+ /*
+ * Re-populate the memory structure with only valid regions.
+ * Invalid regions are over-written with memmove.
+ */
valid_regions = 0;
for (regionidx = mem->nregions; 0 != regionidx--;) {
- if ((mem->regions[regionidx].userspace_address < mem->base_address) ||
- (mem->regions[regionidx].userspace_address > (mem->base_address + mem->mapped_size))) {
- memmove(&mem->regions[regionidx], &mem->regions[regionidx + 1],
- sizeof(struct virtio_memory_regions) * valid_regions);
+ if ((mem->regions[regionidx].userspace_address <
+ mem->base_address) ||
+ (mem->regions[regionidx].userspace_address >
+ (mem->base_address + mem->mapped_size))) {
+ memmove(&mem->regions[regionidx],
+ &mem->regions[regionidx + 1],
+ sizeof(struct virtio_memory_regions) *
+ valid_regions);
} else {
valid_regions++;
}
dev->mem = mem;
/*
- * Calculate the address offset for each region. This offset is used to identify the vhost virtual address
+ * Calculate the address offset for each region.
+ * This offset is used to identify the vhost virtual address
* corresponding to a QEMU guest physical address.
*/
for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
- dev->mem->regions[regionidx].address_offset = dev->mem->regions[regionidx].userspace_address - dev->mem->base_address
- + dev->mem->mapped_address - dev->mem->regions[regionidx].guest_phys_address;
+ dev->mem->regions[regionidx].address_offset =
+ dev->mem->regions[regionidx].userspace_address -
+ dev->mem->base_address +
+ dev->mem->mapped_address -
+ dev->mem->regions[regionidx].guest_phys_address;
}
return 0;
if (dev == NULL)
return -1;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[state->index]->size = state->num;
return 0;
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_ADDR
- * The virtio device sends us the desc, used and avail ring addresses. This function
- * then converts these to our address space.
+ * The virtio device sends us the desc, used and avail ring addresses.
+ * This function then converts these to our address space.
*/
static int
set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
if (dev == NULL)
return -1;
- /* addr->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* addr->index refers to the queue index. The txq 1, rxq is 0. */
vq = dev->virtqueue[addr->index];
/* The addresses are converted from QEMU virtual to Vhost virtual. */
- vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev, addr->desc_user_addr);
+ vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev,
+ addr->desc_user_addr);
if (vq->desc == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find descriptor ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find desc ring address.\n",
+ dev->device_fh);
return -1;
}
- vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev, addr->avail_user_addr);
+ vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev,
+ addr->avail_user_addr);
if (vq->avail == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find available ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find avail ring address.\n",
+ dev->device_fh);
return -1;
}
- vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev, addr->used_user_addr);
+ vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev,
+ addr->used_user_addr);
if (vq->used == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find used ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find used ring address.\n",
+ dev->device_fh);
return -1;
}
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n", dev->device_fh, vq->desc);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n", dev->device_fh, vq->avail);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n", dev->device_fh, vq->used);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n",
+ dev->device_fh, vq->desc);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n",
+ dev->device_fh, vq->avail);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n",
+ dev->device_fh, vq->used);
return 0;
}
if (dev == NULL)
return -1;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[state->index]->last_used_idx = state->num;
dev->virtqueue[state->index]->last_used_idx_res = state->num;
return -1;
state->index = index;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
state->num = dev->virtqueue[state->index]->last_used_idx;
return 0;
}
/*
- * This function uses the eventfd_link kernel module to copy an eventfd file descriptor
- * provided by QEMU in to our process space.
+ * This function uses the eventfd_link kernel module to copy an eventfd file
+ * descriptor provided by QEMU in to our process space.
*/
static int
eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
/* Open the character device to the kernel module. */
eventfd_link = open(eventfd_cdev, O_RDWR);
if (eventfd_link < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") eventfd_link module is not loaded\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") eventfd_link module is not loaded\n",
+ dev->device_fh);
return -1;
}
close(eventfd_link);
if (ret < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") EVENTFD_COPY ioctl failed\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") EVENTFD_COPY ioctl failed\n",
+ dev->device_fh);
return -1;
}
-
return 0;
}
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_CALL
- * The virtio device sends an eventfd to interrupt the guest. This fd gets copied in
- * to our process space.
+ * The virtio device sends an eventfd to interrupt the guest. This fd gets
+ * copied into our process space.
*/
static int
set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
vq = dev->virtqueue[file->index];
if (vq->kickfd)
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_KICK
- * The virtio device sends an eventfd that it can use to notify us. This fd gets copied in
- * to our process space.
+ * The virtio device sends an eventfd that it can use to notify us.
+ * This fd gets copied into our process space.
*/
static int
set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
vq = dev->virtqueue[file->index];
if (vq->callfd)
/*
* Called from CUSE IOCTL: VHOST_NET_SET_BACKEND
- * To complete device initialisation when the virtio driver is loaded we are provided with a
- * valid fd for a tap device (not used by us). If this happens then we can add the device to a
- * data core. When the virtio driver is removed we get fd=-1. At that point we remove the device
- * from the data core. The device will still exist in the device configuration linked list.
+ * To complete device initialisation when the virtio driver is loaded,
+ * we are provided with a valid fd for a tap device (not used by us).
+ * If this happens then we can add the device to a data core.
+ * When the virtio driver is removed we get fd=-1.
+ * At that point we remove the device from the data core.
+ * The device will still exist in the device configuration linked list.
*/
static int
set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[file->index]->backend = file->fd;
- /* If the device isn't already running and both backend fds are set we add the device. */
+ /*
+ * If the device isn't already running and both backend fds are set,
+ * we add the device.
+ */
if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
if (((int)dev->virtqueue[VIRTIO_TXQ]->backend != VIRTIO_DEV_STOPPED) &&
((int)dev->virtqueue[VIRTIO_RXQ]->backend != VIRTIO_DEV_STOPPED))
}
/*
- * Function pointers are set for the device operations to allow CUSE to call functions
- * when an IOCTL, device_add or device_release is received.
+ * Function pointers are set for the device operations to allow CUSE to call
+ * functions when an IOCTL, device_add or device_release is received.
*/
static const struct vhost_net_device_ops vhost_device_ops = {
.new_device = new_device,
uint16_t queue_id, int enable)
{
if (enable) {
- RTE_LOG(ERR, VHOST_CONFIG, "guest notification isn't supported.\n");
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "guest notification isn't supported.\n");
return -1;
}
- dev->virtqueue[queue_id]->used->flags = enable ? 0 : VRING_USED_F_NO_NOTIFY;
+ dev->virtqueue[queue_id]->used->flags =
+ enable ? 0 : VRING_USED_F_NO_NOTIFY;
return 0;
}
git.droids-corp.org / dpdk.git / commitdiff