From: Yuanhan Liu Date: Thu, 18 Aug 2016 08:48:37 +0000 (+0800) Subject: vhost: remove vhost-cuse X-Git-Tag: spdx-start~5931 X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=466d914b017e1ae84e84cc3a6d5af78fb5ce13e6;p=dpdk.git vhost: remove vhost-cuse remove vhost-cuse code, including the eventfd_link kernel module that is for vhost-cuse only. The lib/virt/qemu-wrap.py is also removed, as it's mainly for vhost-cuse usage. As we have one vhost implementation now, one vhost config option is needed only. Thus, CONFIG_RTE_LIBRTE_VHOST_USER is removed. Signed-off-by: Yuanhan Liu Reviewed-by: Maxime Coquelin --- diff --git a/config/common_base b/config/common_base index 78305356fd..c703908418 100644 --- a/config/common_base +++ b/config/common_base @@ -546,13 +546,9 @@ CONFIG_RTE_KNI_VHOST_DEBUG_TX=n CONFIG_RTE_LIBRTE_PDUMP=y # -# Compile vhost library -# fuse-devel is needed to run vhost-cuse. -# fuse-devel enables user space char driver development -# vhost-user is turned on by default. +# Compile vhost user library # CONFIG_RTE_LIBRTE_VHOST=n -CONFIG_RTE_LIBRTE_VHOST_USER=y CONFIG_RTE_LIBRTE_VHOST_NUMA=n CONFIG_RTE_LIBRTE_VHOST_DEBUG=n diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 1a3831fac9..f5cfbe0adb 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -50,10 +50,6 @@ Deprecation Notices and will be removed in 17.02. It is replaced by ``rte_mempool_generic_get/put`` functions. -* The vhost-cuse will be removed in 16.11. Since v2.1, a large majority of - development effort has gone to vhost-user, such as multiple-queue, live - migration, reconnect etc. Therefore, vhost-user should be used instead. - * API will change for ``rte_port_source_params`` and ``rte_port_sink_params`` structures. The member ``file_name`` data type will be changed from ``char *`` to ``const char *``. This change targets release 16.11. diff --git a/lib/librte_vhost/Makefile b/lib/librte_vhost/Makefile index 538adb0b18..fb4e7f8068 100644 --- a/lib/librte_vhost/Makefile +++ b/lib/librte_vhost/Makefile @@ -39,13 +39,8 @@ EXPORT_MAP := rte_vhost_version.map LIBABIVER := 3 CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3 -D_FILE_OFFSET_BITS=64 -ifeq ($(CONFIG_RTE_LIBRTE_VHOST_USER),y) CFLAGS += -I vhost_user LDLIBS += -lpthread -else -CFLAGS += -I vhost_cuse -LDLIBS += -lfuse -endif ifeq ($(CONFIG_RTE_LIBRTE_VHOST_NUMA),y) LDLIBS += -lnuma @@ -53,11 +48,9 @@ endif # all source are stored in SRCS-y SRCS-$(CONFIG_RTE_LIBRTE_VHOST) := virtio-net.c vhost_rxtx.c -ifeq ($(CONFIG_RTE_LIBRTE_VHOST_USER),y) -SRCS-$(CONFIG_RTE_LIBRTE_VHOST) += vhost_user/vhost-net-user.c vhost_user/virtio-net-user.c vhost_user/fd_man.c -else -SRCS-$(CONFIG_RTE_LIBRTE_VHOST) += vhost_cuse/vhost-net-cdev.c vhost_cuse/virtio-net-cdev.c vhost_cuse/eventfd_copy.c -endif +SRCS-$(CONFIG_RTE_LIBRTE_VHOST) += vhost_user/vhost-net-user.c +SRCS-$(CONFIG_RTE_LIBRTE_VHOST) += vhost_user/virtio-net-user.c +SRCS-$(CONFIG_RTE_LIBRTE_VHOST) += vhost_user/fd_man.c # install includes SYMLINK-$(CONFIG_RTE_LIBRTE_VHOST)-include += rte_virtio_net.h diff --git a/lib/librte_vhost/eventfd_link/Makefile b/lib/librte_vhost/eventfd_link/Makefile deleted file mode 100644 index 3140e8bfe6..0000000000 --- a/lib/librte_vhost/eventfd_link/Makefile +++ /dev/null @@ -1,41 +0,0 @@ -# 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. - -RTE_KERNELDIR ?= /lib/modules/$(shell uname -r)/build - -obj-m += eventfd_link.o - - -all: - make -C $(RTE_KERNELDIR) M=$(PWD) modules - -clean: - make -C $(RTE_KERNELDIR) M=$(PWD) clean diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.c b/lib/librte_vhost/eventfd_link/eventfd_link.c deleted file mode 100644 index 4b05b5a8e5..0000000000 --- a/lib/librte_vhost/eventfd_link/eventfd_link.c +++ /dev/null @@ -1,277 +0,0 @@ -/*- - * 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 -#include -#include -#include -#include - -#include "eventfd_link.h" - - -/* - * get_files_struct is copied from fs/file.c - */ -struct files_struct * -get_files_struct(struct task_struct *task) -{ - struct files_struct *files; - - task_lock(task); - files = task->files; - if (files) - 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) -{ - if (atomic_dec_and_test(&files->count)) - BUG(); -} - -static struct file * -fget_from_files(struct files_struct *files, unsigned fd) -{ - struct file *file; - - rcu_read_lock(); - file = fcheck_files(files, fd); - if (file) { - if (file->f_mode & FMODE_PATH || - !atomic_long_inc_not_zero(&file->f_count)) { - - file = NULL; - } - } - rcu_read_unlock(); - - return file; -} - -static long -eventfd_link_ioctl_copy2(unsigned long arg) -{ - void __user *argp = (void __user *) arg; - struct task_struct *task_target = NULL; - struct file *file; - struct files_struct *files; - struct eventfd_copy2 eventfd_copy2; - long ret = -EFAULT; - - if (copy_from_user(&eventfd_copy2, argp, sizeof(struct eventfd_copy2))) - goto out; - - /* - * Find the task struct for the target pid - */ - ret = -ESRCH; - - task_target = - get_pid_task(find_vpid(eventfd_copy2.pid), PIDTYPE_PID); - if (task_target == NULL) { - pr_info("Unable to find pid %d\n", eventfd_copy2.pid); - goto out; - } - - ret = -ESTALE; - files = get_files_struct(task_target); - if (files == NULL) { - pr_info("Failed to get target files struct\n"); - goto out_task; - } - - ret = -EBADF; - file = fget_from_files(files, eventfd_copy2.fd); - put_files_struct(files); - - if (file == NULL) { - pr_info("Failed to get fd %d from target\n", eventfd_copy2.fd); - goto out_task; - } - - /* - * Install the file struct from the target process into the - * newly allocated file desciptor of the source process. - */ - ret = get_unused_fd_flags(eventfd_copy2.flags); - if (ret < 0) { - fput(file); - goto out_task; - } - fd_install(ret, file); - -out_task: - put_task_struct(task_target); -out: - return ret; -} - -static long -eventfd_link_ioctl_copy(unsigned long arg) -{ - void __user *argp = (void __user *) arg; - struct task_struct *task_target = NULL; - struct file *file; - struct files_struct *files; - struct fdtable *fdt; - struct eventfd_copy eventfd_copy; - long ret = -EFAULT; - - if (copy_from_user(&eventfd_copy, argp, sizeof(struct eventfd_copy))) - goto out; - - /* - * Find the task struct for the target pid - */ - ret = -ESRCH; - - task_target = - get_pid_task(find_vpid(eventfd_copy.target_pid), PIDTYPE_PID); - if (task_target == NULL) { - pr_info("Unable to find pid %d\n", eventfd_copy.target_pid); - goto out; - } - - ret = -ESTALE; - files = get_files_struct(current); - if (files == NULL) { - pr_info("Failed to get current files struct\n"); - goto out_task; - } - - ret = -EBADF; - file = fget_from_files(files, eventfd_copy.source_fd); - - if (file == NULL) { - pr_info("Failed to get fd %d from source\n", - eventfd_copy.source_fd); - put_files_struct(files); - goto out_task; - } - - /* - * Release the existing eventfd in the source process - */ - spin_lock(&files->file_lock); - fput(file); - filp_close(file, files); - fdt = files_fdtable(files); - fdt->fd[eventfd_copy.source_fd] = NULL; - spin_unlock(&files->file_lock); - - put_files_struct(files); - - /* - * Find the file struct associated with the target fd. - */ - - ret = -ESTALE; - files = get_files_struct(task_target); - if (files == NULL) { - pr_info("Failed to get target files struct\n"); - goto out_task; - } - - ret = -EBADF; - file = fget_from_files(files, eventfd_copy.target_fd); - put_files_struct(files); - - if (file == NULL) { - pr_info("Failed to get fd %d from target\n", - eventfd_copy.target_fd); - goto out_task; - } - - /* - * Install the file struct from the target process into the - * file desciptor of the source process, - */ - - fd_install(eventfd_copy.source_fd, file); - ret = 0; - -out_task: - put_task_struct(task_target); -out: - return ret; -} - -static long -eventfd_link_ioctl(struct file *f, unsigned int ioctl, unsigned long arg) -{ - long ret = -ENOIOCTLCMD; - - switch (ioctl) { - case EVENTFD_COPY: - ret = eventfd_link_ioctl_copy(arg); - break; - case EVENTFD_COPY2: - ret = eventfd_link_ioctl_copy2(arg); - break; - } - - return ret; -} - -static const struct file_operations eventfd_link_fops = { - .owner = THIS_MODULE, - .unlocked_ioctl = eventfd_link_ioctl, -}; - - -static struct miscdevice eventfd_link_misc = { - .minor = MISC_DYNAMIC_MINOR, - .name = "eventfd-link", - .fops = &eventfd_link_fops, -}; - -static int __init -eventfd_link_init(void) -{ - return misc_register(&eventfd_link_misc); -} - -module_init(eventfd_link_init); - -static void __exit -eventfd_link_exit(void) -{ - misc_deregister(&eventfd_link_misc); -} - -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"); diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.h b/lib/librte_vhost/eventfd_link/eventfd_link.h deleted file mode 100644 index 5ebc20b8e2..0000000000 --- a/lib/librte_vhost/eventfd_link/eventfd_link.h +++ /dev/null @@ -1,94 +0,0 @@ -/*- - * 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_ - -/* - * arguements for the EVENTFD_COPY ioctl - */ -struct eventfd_copy { - 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 */ -}; - -/* - * ioctl to copy an fd entry in calling process to an fd in a target process - * NOTE: this one should be - * #define EVENTFD_COPY _IOWR('D', 1, struct eventfd_copy) actually - */ -#define EVENTFD_COPY 1 - -/* - * arguments for the EVENTFD_COPY2 ioctl - */ -struct eventfd_copy2 { - unsigned fd; /* fd to steal */ - pid_t pid; /* pid of the process to steal from */ - unsigned flags; /* flags to allocate new fd with */ -}; - -/* - * ioctl to copy an fd entry from the target process into newly allocated - * fd in the calling process - */ -#define EVENTFD_COPY2 _IOW('D', 2, struct eventfd_copy2) - -#endif /* _EVENTFD_LINK_H_ */ diff --git a/lib/librte_vhost/libvirt/qemu-wrap.py b/lib/librte_vhost/libvirt/qemu-wrap.py deleted file mode 100755 index e6a2cc9d03..0000000000 --- a/lib/librte_vhost/libvirt/qemu-wrap.py +++ /dev/null @@ -1,387 +0,0 @@ -#!/usr/bin/python -#/* -# * 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 script is designed to modify the call to the QEMU emulator -# to support userspace vhost when starting a guest machine through -# libvirt with vhost enabled. The steps to enable this are as follows -# and should be run as root: -# -# 1. Place this script in a libvirtd's binary search PATH ($PATH) -# A good location would be in the same directory that the QEMU -# binary is located -# -# 2. Ensure that the script has the same owner/group and file -# permissions as the QEMU binary -# -# 3. Update the VM xml file using "virsh edit VM.xml" -# -# 3.a) Set the VM to use the launch script -# -# Set the emulator path contained in the -# tags -# -# e.g replace /usr/bin/qemu-kvm -# with /usr/bin/qemu-wrap.py -# -# 3.b) Set the VM's device's to use vhost-net offload -# -# -# -# -# -# -# 4. Enable libvirt to access our userpace device file by adding it to -# controllers cgroup for libvirtd using the following steps -# -# 4.a) In /etc/libvirt/qemu.conf add/edit the following lines: -# 1) cgroup_controllers = [ ... "devices", ... ] -# 2) clear_emulator_capabilities = 0 -# 3) user = "root" -# 4) group = "root" -# 5) cgroup_device_acl = [ -# "/dev/null", "/dev/full", "/dev/zero", -# "/dev/random", "/dev/urandom", -# "/dev/ptmx", "/dev/kvm", "/dev/kqemu", -# "/dev/rtc", "/dev/hpet", "/dev/net/tun", -# "/dev/", -# "/dev/hugepages", -# ] -# -# 4.b) Disable SELinux or set to permissive mode -# -# 4.c) Mount cgroup device controller -# "mkdir /dev/cgroup" -# "mount -t cgroup none /dev/cgroup -o devices" -# -# 4.d) Set hugetlbfs_mount variable - ( Optional ) -# VMs using userspace vhost must use hugepage backed -# memory. This can be enabled in the libvirt XML -# config by adding a memory backing section to the -# XML config e.g. -# -# -# -# This memory backing section should be added after the -# and sections. This will add -# flags "-mem-prealloc -mem-path " to the QEMU -# command line. The hugetlbfs_mount variable can be used -# to override the default passed through by libvirt. -# -# if "-mem-prealloc" or "-mem-path " are not passed -# through and a vhost device is detected then these options will -# be automatically added by this script. This script will detect -# the system hugetlbfs mount point to be used for . The -# default for this script can be overidden by the -# hugetlbfs_dir variable in the configuration section of this script. -# -# -# 4.e) Restart the libvirtd system process -# e.g. on Fedora "systemctl restart libvirtd.service" -# -# -# 4.f) Edit the Configuration Parameters section of this script -# to point to the correct emulator location and set any -# addition options -# -# The script modifies the libvirtd Qemu call by modifying/adding -# options based on the configuration parameters below. -# NOTE: -# emul_path and us_vhost_path must be set -# All other parameters are optional -##################################################################### - - -############################################# -# Configuration Parameters -############################################# -#Path to QEMU binary -emul_path = "/usr/local/bin/qemu-system-x86_64" - -#Path to userspace vhost device file -# This filename should match the --dev-basename parameters of -# the command used to launch the userspace vhost sample application e.g. -# if the sample app lauch command is: -# ./build/vhost-switch ..... --dev-basename usvhost -# then this variable should be set to: -# us_vhost_path = "/dev/usvhost" -us_vhost_path = "/dev/usvhost" - -#List of additional user defined emulation options. These options will -#be added to all Qemu calls -emul_opts_user = [] - -#List of additional user defined emulation options for vhost only. -#These options will only be added to vhost enabled guests -emul_opts_user_vhost = [] - -#For all VHOST enabled VMs, the VM memory is preallocated from hugetlbfs -# Set this variable to one to enable this option for all VMs -use_huge_all = 0 - -#Instead of autodetecting, override the hugetlbfs directory by setting -#this variable -hugetlbfs_dir = "" - -############################################# - - -############################################# -# ****** Do Not Modify Below this Line ****** -############################################# - -import sys, os, subprocess -import time -import signal - - -#List of open userspace vhost file descriptors -fd_list = [] - -#additional virtio device flags when using userspace vhost -vhost_flags = [ "csum=off", - "gso=off", - "guest_tso4=off", - "guest_tso6=off", - "guest_ecn=off" - ] - -#String of the path to the Qemu process pid -qemu_pid = "/tmp/%d-qemu.pid" % os.getpid() - -############################################# -# Signal haldler to kill Qemu subprocess -############################################# -def kill_qemu_process(signum, stack): - pidfile = open(qemu_pid, 'r') - pid = int(pidfile.read()) - os.killpg(pid, signal.SIGTERM) - pidfile.close() - - -############################################# -# Find the system hugefile mount point. -# Note: -# if multiple hugetlbfs mount points exist -# then the first one found will be used -############################################# -def find_huge_mount(): - - if (len(hugetlbfs_dir)): - return hugetlbfs_dir - - huge_mount = "" - - if (os.access("/proc/mounts", os.F_OK)): - f = open("/proc/mounts", "r") - line = f.readline() - while line: - line_split = line.split(" ") - if line_split[2] == 'hugetlbfs': - huge_mount = line_split[1] - break - line = f.readline() - else: - print "/proc/mounts not found" - exit (1) - - f.close - if len(huge_mount) == 0: - print "Failed to find hugetlbfs mount point" - exit (1) - - return huge_mount - - -############################################# -# Get a userspace Vhost file descriptor -############################################# -def get_vhost_fd(): - - if (os.access(us_vhost_path, os.F_OK)): - fd = os.open( us_vhost_path, os.O_RDWR) - else: - print ("US-Vhost file %s not found" %us_vhost_path) - exit (1) - - return fd - - -############################################# -# Check for vhostfd. if found then replace -# with our own vhost fd and append any vhost -# flags onto the end -############################################# -def modify_netdev_arg(arg): - - global fd_list - vhost_in_use = 0 - s = '' - new_opts = [] - netdev_opts = arg.split(",") - - for opt in netdev_opts: - #check if vhost is used - if "vhost" == opt[:5]: - vhost_in_use = 1 - else: - new_opts.append(opt) - - #if using vhost append vhost options - if vhost_in_use == 1: - #append vhost on option - new_opts.append('vhost=on') - #append vhostfd ption - new_fd = get_vhost_fd() - new_opts.append('vhostfd=' + str(new_fd)) - fd_list.append(new_fd) - - #concatenate all options - for opt in new_opts: - if len(s) > 0: - s+=',' - - s+=opt - - return s - - -############################################# -# Main -############################################# -def main(): - - global fd_list - global vhost_in_use - new_args = [] - num_cmd_args = len(sys.argv) - emul_call = '' - mem_prealloc_set = 0 - mem_path_set = 0 - num = 0; - - #parse the parameters - while (num < num_cmd_args): - arg = sys.argv[num] - - #Check netdev +1 parameter for vhostfd - if arg == '-netdev': - num_vhost_devs = len(fd_list) - new_args.append(arg) - - num+=1 - arg = sys.argv[num] - mod_arg = modify_netdev_arg(arg) - new_args.append(mod_arg) - - #append vhost flags if this is a vhost device - # and -device is the next arg - # i.e -device -opt1,-opt2,...,-opt3,%vhost - if (num_vhost_devs < len(fd_list)): - num+=1 - arg = sys.argv[num] - if arg == '-device': - new_args.append(arg) - num+=1 - new_arg = sys.argv[num] - for flag in vhost_flags: - new_arg = ''.join([new_arg,',',flag]) - new_args.append(new_arg) - else: - new_args.append(arg) - elif arg == '-mem-prealloc': - mem_prealloc_set = 1 - new_args.append(arg) - elif arg == '-mem-path': - mem_path_set = 1 - new_args.append(arg) - - else: - new_args.append(arg) - - num+=1 - - #Set Qemu binary location - emul_call+=emul_path - emul_call+=" " - - #Add prealloc mem options if using vhost and not already added - if ((len(fd_list) > 0) and (mem_prealloc_set == 0)): - emul_call += "-mem-prealloc " - - #Add mempath mem options if using vhost and not already added - if ((len(fd_list) > 0) and (mem_path_set == 0)): - #Detect and add hugetlbfs mount point - mp = find_huge_mount() - mp = "".join(["-mem-path ", mp]) - emul_call += mp - emul_call += " " - - #add user options - for opt in emul_opts_user: - emul_call += opt - emul_call += " " - - #Add add user vhost only options - if len(fd_list) > 0: - for opt in emul_opts_user_vhost: - emul_call += opt - emul_call += " " - - #Add updated libvirt options - iter_args = iter(new_args) - #skip 1st arg i.e. call to this script - next(iter_args) - for arg in iter_args: - emul_call+=str(arg) - emul_call+= " " - - emul_call += "-pidfile %s " % qemu_pid - #Call QEMU - process = subprocess.Popen(emul_call, shell=True, preexec_fn=os.setsid) - - for sig in [signal.SIGTERM, signal.SIGINT, signal.SIGHUP, signal.SIGQUIT]: - signal.signal(sig, kill_qemu_process) - - process.wait() - - #Close usvhost files - for fd in fd_list: - os.close(fd) - #Cleanup temporary files - if os.access(qemu_pid, os.F_OK): - os.remove(qemu_pid) - -if __name__ == "__main__": - main() diff --git a/lib/librte_vhost/vhost_cuse/eventfd_copy.c b/lib/librte_vhost/vhost_cuse/eventfd_copy.c deleted file mode 100644 index 154b32a44e..0000000000 --- a/lib/librte_vhost/vhost_cuse/eventfd_copy.c +++ /dev/null @@ -1,104 +0,0 @@ -/*- - * 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 -#include -#include -#include -#include -#include - -#include - -#include "eventfd_link/eventfd_link.h" -#include "eventfd_copy.h" -#include "vhost-net.h" - -static const char eventfd_cdev[] = "/dev/eventfd-link"; - -static int eventfd_link = -1; - -int -eventfd_init(void) -{ - if (eventfd_link >= 0) - return 0; - - eventfd_link = open(eventfd_cdev, O_RDWR); - if (eventfd_link < 0) { - RTE_LOG(ERR, VHOST_CONFIG, - "eventfd_link module is not loaded\n"); - return -1; - } - - return 0; -} - -int -eventfd_free(void) -{ - if (eventfd_link >= 0) - close(eventfd_link); - return 0; -} - -/* - * This function uses the eventfd_link kernel module to copy an eventfd file - * descriptor provided by QEMU in to our process space. - */ -int -eventfd_copy(int target_fd, int target_pid) -{ - int ret; - struct eventfd_copy2 eventfd_copy2; - - - /* Open the character device to the kernel module. */ - /* TODO: check this earlier rather than fail until VM boots! */ - if (eventfd_init() < 0) - return -1; - - eventfd_copy2.fd = target_fd; - eventfd_copy2.pid = target_pid; - eventfd_copy2.flags = O_NONBLOCK | O_CLOEXEC; - /* Call the IOCTL to copy the eventfd. */ - ret = ioctl(eventfd_link, EVENTFD_COPY2, &eventfd_copy2); - - if (ret < 0) { - RTE_LOG(ERR, VHOST_CONFIG, - "EVENTFD_COPY2 ioctl failed\n"); - return -1; - } - - return ret; -} diff --git a/lib/librte_vhost/vhost_cuse/eventfd_copy.h b/lib/librte_vhost/vhost_cuse/eventfd_copy.h deleted file mode 100644 index 5f446ca01e..0000000000 --- a/lib/librte_vhost/vhost_cuse/eventfd_copy.h +++ /dev/null @@ -1,45 +0,0 @@ -/*- - * 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_H -#define _EVENTFD_H - -int -eventfd_init(void); - -int -eventfd_free(void); - -int -eventfd_copy(int target_fd, int target_pid); - -#endif diff --git a/lib/librte_vhost/vhost_cuse/vhost-net-cdev.c b/lib/librte_vhost/vhost_cuse/vhost-net-cdev.c deleted file mode 100644 index 5d1501161b..0000000000 --- a/lib/librte_vhost/vhost_cuse/vhost-net-cdev.c +++ /dev/null @@ -1,431 +0,0 @@ -/*- - * 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 -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#include "virtio-net-cdev.h" -#include "vhost-net.h" -#include "eventfd_copy.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; - -/* - * Returns vhost_cuse_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_cuse_device_ctx -fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi) -{ - struct vhost_cuse_device_ctx ctx; - struct fuse_ctx const *const req_ctx = fuse_req_ctx(req); - - ctx.pid = req_ctx->pid; - ctx.vid = (int)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) -{ - int vid = 0; - - vid = vhost_new_device(); - if (vid == -1) { - fuse_reply_err(req, EPERM); - return; - } - - fi->fh = vid; - - RTE_LOG(INFO, VHOST_CONFIG, - "(%d) device configuration started\n", vid); - 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_cuse_device_ctx ctx = fuse_req_to_vhost_ctx(req, fi); - - vhost_destroy_device(ctx.vid); - RTE_LOG(INFO, VHOST_CONFIG, "(%d) device released\n", ctx.vid); - fuse_reply_err(req, err); -} - -/* - * Boilerplate code for CUSE IOCTL - * Implicit arguments: vid, req, result. - */ -#define VHOST_IOCTL(func) do { \ - result = (func)(vid); \ - 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: vid, 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(vid, &(var)); \ - fuse_reply_ioctl(req, result, NULL, 0);\ - } \ -} while (0) - -/* - * Boilerplate code for CUSE Write IOCTL - * Implicit arguments: vid, req, result, out_bufsz. - */ -#define VHOST_IOCTL_W(type, var, func) do { \ - if (!out_bufsz) { \ - VHOST_IOCTL_RETRY(0, sizeof(type));\ - } else { \ - result = (func)(vid, &(var));\ - fuse_reply_ioctl(req, result, &(var), sizeof(type));\ - } \ -} while (0) - -/* - * Boilerplate code for CUSE Read/Write IOCTL - * Implicit arguments: vid, 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)(vid, (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_cuse_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; - int vid = ctx.vid; - - switch (cmd) { - case VHOST_NET_SET_BACKEND: - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_NET_SET_BACKEND\n", ctx.vid); - if (!in_buf) { - VHOST_IOCTL_RETRY(sizeof(file), 0); - break; - } - file = *(const struct vhost_vring_file *)in_buf; - result = cuse_set_backend(ctx, &file); - fuse_reply_ioctl(req, result, NULL, 0); - break; - - case VHOST_GET_FEATURES: - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_GET_FEATURES\n", vid); - VHOST_IOCTL_W(uint64_t, features, vhost_get_features); - break; - - case VHOST_SET_FEATURES: - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_SET_FEATURES\n", vid); - VHOST_IOCTL_R(uint64_t, features, vhost_set_features); - break; - - case VHOST_RESET_OWNER: - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_RESET_OWNER\n", vid); - VHOST_IOCTL(vhost_reset_owner); - break; - - case VHOST_SET_OWNER: - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_SET_OWNER\n", vid); - VHOST_IOCTL(vhost_set_owner); - break; - - case VHOST_SET_MEM_TABLE: - /*TODO fix race condition.*/ - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_SET_MEM_TABLE\n", vid); - 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 = cuse_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, - "(%d) IOCTL: VHOST_SET_VRING_NUM\n", vid); - VHOST_IOCTL_R(struct vhost_vring_state, state, - vhost_set_vring_num); - break; - - case VHOST_SET_VRING_BASE: - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_SET_VRING_BASE\n", vid); - VHOST_IOCTL_R(struct vhost_vring_state, state, - vhost_set_vring_base); - break; - - case VHOST_GET_VRING_BASE: - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_GET_VRING_BASE\n", vid); - VHOST_IOCTL_RW(uint32_t, index, - struct vhost_vring_state, state, vhost_get_vring_base); - break; - - case VHOST_SET_VRING_ADDR: - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_SET_VRING_ADDR\n", vid); - VHOST_IOCTL_R(struct vhost_vring_addr, addr, - vhost_set_vring_addr); - break; - - case VHOST_SET_VRING_KICK: - case VHOST_SET_VRING_CALL: - if (cmd == VHOST_SET_VRING_KICK) - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_SET_VRING_KICK\n", vid); - else - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: VHOST_SET_VRING_CALL\n", vid); - if (!in_buf) - VHOST_IOCTL_RETRY(sizeof(struct vhost_vring_file), 0); - else { - int fd; - file = *(const struct vhost_vring_file *)in_buf; - LOG_DEBUG(VHOST_CONFIG, - "idx:%d fd:%d\n", file.index, file.fd); - fd = eventfd_copy(file.fd, ctx.pid); - if (fd < 0) { - fuse_reply_ioctl(req, -1, NULL, 0); - result = -1; - break; - } - file.fd = fd; - if (cmd == VHOST_SET_VRING_KICK) { - result = vhost_set_vring_kick(vid, &file); - fuse_reply_ioctl(req, result, NULL, 0); - } else { - result = vhost_set_vring_call(vid, &file); - fuse_reply_ioctl(req, result, NULL, 0); - } - } - break; - - default: - RTE_LOG(ERR, VHOST_CONFIG, - "(%d) IOCTL: DOESN NOT EXIST\n", vid); - result = -1; - fuse_reply_ioctl(req, result, NULL, 0); - } - - if (result < 0) - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: FAIL\n", vid); - else - LOG_DEBUG(VHOST_CONFIG, - "(%d) IOCTL: SUCCESS\n", vid); -} - -/* - * 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, uint64_t flags) -{ - 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 (flags) { - RTE_LOG(ERR, VHOST_CONFIG, - "vhost-cuse does not support any flags so far\n"); - return -1; - } - - 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; - } - - if (eventfd_init() < 0) - 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; - - session = cuse_lowlevel_setup(3, fuse_argv, - &cuse_info, &vhost_net_ops, 0, NULL); - if (session == NULL) - return -1; - - return 0; -} - -/** - * An empty function for unregister - */ -int -rte_vhost_driver_unregister(const char *dev_name __rte_unused) -{ - 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; -} diff --git a/lib/librte_vhost/vhost_cuse/virtio-net-cdev.c b/lib/librte_vhost/vhost_cuse/virtio-net-cdev.c deleted file mode 100644 index 552be7d4f7..0000000000 --- a/lib/librte_vhost/vhost_cuse/virtio-net-cdev.c +++ /dev/null @@ -1,433 +0,0 @@ -/*- - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include "rte_virtio_net.h" -#include "vhost-net.h" -#include "virtio-net-cdev.h" -#include "eventfd_copy.h" - -/* Line size for reading maps file. */ -static const uint32_t BUFSIZE = PATH_MAX; - -/* Size of prot char array in procmap. */ -#define PROT_SZ 5 - -/* Number of elements in procmap struct. */ -#define PROCMAP_SZ 8 - -/* 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. */ -}; - -/* - * Locate the file containing QEMU's memory space and - * map it to our address space. - */ -static int -host_memory_map(pid_t pid, uint64_t addr, - uint64_t *mapped_address, uint64_t *mapped_size) -{ - struct dirent *dptr = NULL; - struct procmap procmap; - DIR *dp = NULL; - int fd; - int i; - char memfile[PATH_MAX]; - char mapfile[PATH_MAX]; - char procdir[PATH_MAX]; - char resolved_path[PATH_MAX]; - char *path = NULL; - FILE *fmap; - void *map; - uint8_t found = 0; - char line[BUFSIZE]; - char dlm[] = "- : "; - char *str, *sp, *in[PROCMAP_SZ]; - char *end = NULL; - - /* Path where mem files are located. */ - snprintf(procdir, PATH_MAX, "/proc/%u/fd/", pid); - /* Maps file used to locate mem file. */ - snprintf(mapfile, PATH_MAX, "/proc/%u/maps", pid); - - fmap = fopen(mapfile, "r"); - if (fmap == NULL) { - RTE_LOG(ERR, VHOST_CONFIG, - "Failed to open maps file for pid %d\n", - pid); - return -1; - } - - /* Read through maps file until we find out base_address. */ - while (fgets(line, BUFSIZE, fmap) != 0) { - str = line; - errno = 0; - /* 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)) { - fclose(fmap); - return -1; - } - str = NULL; - } - - /* Convert/Copy each field as needed. */ - procmap.va_start = strtoull(in[0], &end, 16); - 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)) { - fclose(fmap); - return -1; - } - - procmap.pgoff = strtoull(in[3], &end, 16); - 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)) { - fclose(fmap); - return -1; - } - - procmap.min = strtoul(in[5], &end, 16); - 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)) { - fclose(fmap); - return -1; - } - - memcpy(&procmap.prot, in[2], PROT_SZ); - memcpy(&procmap.fname, in[7], PATH_MAX); - - if (procmap.va_start == addr) { - procmap.len = procmap.len - procmap.va_start; - found = 1; - break; - } - } - fclose(fmap); - - if (!found) { - RTE_LOG(ERR, VHOST_CONFIG, - "Failed to find memory file in pid %d maps file\n", - pid); - return -1; - } - - /* Find the guest memory file among the process fds. */ - dp = opendir(procdir); - if (dp == NULL) { - RTE_LOG(ERR, VHOST_CONFIG, - "Cannot open pid %d process directory\n", - pid); - return -1; - } - - found = 0; - - /* Read the fd directory contents. */ - while (NULL != (dptr = readdir(dp))) { - snprintf(memfile, PATH_MAX, "/proc/%u/fd/%s", - pid, dptr->d_name); - path = realpath(memfile, resolved_path); - if ((path == NULL) && (strlen(resolved_path) == 0)) { - RTE_LOG(ERR, VHOST_CONFIG, - "Failed to resolve fd directory\n"); - closedir(dp); - return -1; - } - if (strncmp(resolved_path, procmap.fname, - strnlen(procmap.fname, PATH_MAX)) == 0) { - found = 1; - break; - } - } - - closedir(dp); - - if (found == 0) { - RTE_LOG(ERR, VHOST_CONFIG, - "Failed to find memory file for pid %d\n", - 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, - "Failed to open %s for pid %d\n", - memfile, pid); - return -1; - } - - 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, - "Error mapping the file %s for pid %d\n", - memfile, pid); - return -1; - } - - /* Store the memory address and size in the device data structure */ - *mapped_address = (uint64_t)(uintptr_t)map; - *mapped_size = procmap.len; - - LOG_DEBUG(VHOST_CONFIG, - "Mem File: %s->%s - Size: %llu - VA: %p\n", - memfile, resolved_path, - (unsigned long long)*mapped_size, map); - - return 0; -} - -int -cuse_set_mem_table(struct vhost_cuse_device_ctx ctx, - const struct vhost_memory *mem_regions_addr, uint32_t nregions) -{ - uint64_t size = offsetof(struct vhost_memory, regions); - uint32_t idx, valid_regions; - struct virtio_memory_regions *pregion; - struct vhost_memory_region *mem_regions = (void *)(uintptr_t) - ((uint64_t)(uintptr_t)mem_regions_addr + size); - uint64_t base_address = 0, mapped_address, mapped_size; - struct virtio_net *dev; - - dev = get_device(ctx.vid); - if (dev == NULL) - return -1; - - if (dev->mem && dev->mem->mapped_address) { - munmap((void *)(uintptr_t)dev->mem->mapped_address, - (size_t)dev->mem->mapped_size); - free(dev->mem); - dev->mem = NULL; - } - - dev->mem = calloc(1, sizeof(struct virtio_memory) + - sizeof(struct virtio_memory_regions) * nregions); - if (dev->mem == NULL) { - RTE_LOG(ERR, VHOST_CONFIG, - "(%d) failed to allocate memory for dev->mem\n", - dev->vid); - return -1; - } - - pregion = &dev->mem->regions[0]; - - for (idx = 0; idx < nregions; idx++) { - pregion[idx].guest_phys_address = - mem_regions[idx].guest_phys_addr; - pregion[idx].guest_phys_address_end = - pregion[idx].guest_phys_address + - mem_regions[idx].memory_size; - pregion[idx].memory_size = - mem_regions[idx].memory_size; - pregion[idx].userspace_address = - mem_regions[idx].userspace_addr; - - LOG_DEBUG(VHOST_CONFIG, - "REGION: %u - GPA: %p - QVA: %p - SIZE (%"PRIu64")\n", - idx, - (void *)(uintptr_t)pregion[idx].guest_phys_address, - (void *)(uintptr_t)pregion[idx].userspace_address, - pregion[idx].memory_size); - - /*set the base address mapping*/ - if (pregion[idx].guest_phys_address == 0x0) { - base_address = - pregion[idx].userspace_address; - /* Map VM memory file */ - if (host_memory_map(ctx.pid, base_address, - &mapped_address, &mapped_size) != 0) { - free(dev->mem); - dev->mem = NULL; - return -1; - } - dev->mem->mapped_address = mapped_address; - dev->mem->base_address = base_address; - dev->mem->mapped_size = mapped_size; - } - } - - /* Check that we have a valid base address. */ - if (base_address == 0) { - RTE_LOG(ERR, VHOST_CONFIG, - "Failed to find base address of qemu memory file.\n"); - free(dev->mem); - dev->mem = NULL; - return -1; - } - - valid_regions = nregions; - for (idx = 0; idx < nregions; idx++) { - if ((pregion[idx].userspace_address < base_address) || - (pregion[idx].userspace_address > - (base_address + mapped_size))) - valid_regions--; - } - - - if (valid_regions != nregions) { - valid_regions = 0; - for (idx = nregions; 0 != idx--; ) { - if ((pregion[idx].userspace_address < base_address) || - (pregion[idx].userspace_address > - (base_address + mapped_size))) { - memmove(&pregion[idx], &pregion[idx + 1], - sizeof(struct virtio_memory_regions) * - valid_regions); - } else - valid_regions++; - } - } - - for (idx = 0; idx < valid_regions; idx++) { - pregion[idx].address_offset = - mapped_address - base_address + - pregion[idx].userspace_address - - pregion[idx].guest_phys_address; - } - dev->mem->nregions = valid_regions; - - return 0; -} - -/* - * Function to get the tap device name from the provided file descriptor and - * save it in the device structure. - */ -static int -get_ifname(int vid, int tap_fd, int pid) -{ - int fd_tap; - struct ifreq ifr; - uint32_t ifr_size; - int ret; - - fd_tap = eventfd_copy(tap_fd, pid); - if (fd_tap < 0) - return -1; - - ret = ioctl(fd_tap, TUNGETIFF, &ifr); - - if (close(fd_tap) < 0) - RTE_LOG(ERR, VHOST_CONFIG, "(%d) fd close failed\n", vid); - - if (ret >= 0) { - ifr_size = strnlen(ifr.ifr_name, sizeof(ifr.ifr_name)); - vhost_set_ifname(vid, ifr.ifr_name, ifr_size); - } else - RTE_LOG(ERR, VHOST_CONFIG, - "(%d) TUNGETIFF ioctl failed\n", vid); - - return 0; -} - -int -cuse_set_backend(struct vhost_cuse_device_ctx ctx, - struct vhost_vring_file *file) -{ - struct virtio_net *dev; - - dev = get_device(ctx.vid); - if (dev == NULL) - return -1; - - if (!(dev->flags & VIRTIO_DEV_RUNNING) && file->fd != VIRTIO_DEV_STOPPED) - get_ifname(ctx.vid, file->fd, ctx.pid); - - return vhost_set_backend(ctx.vid, file); -} - -void -vhost_backend_cleanup(struct virtio_net *dev) -{ - /* Unmap QEMU memory file if mapped. */ - if (dev->mem) { - munmap((void *)(uintptr_t)dev->mem->mapped_address, - (size_t)dev->mem->mapped_size); - free(dev->mem); - dev->mem = NULL; - } -} diff --git a/lib/librte_vhost/vhost_cuse/virtio-net-cdev.h b/lib/librte_vhost/vhost_cuse/virtio-net-cdev.h deleted file mode 100644 index 3f67154b99..0000000000 --- a/lib/librte_vhost/vhost_cuse/virtio-net-cdev.h +++ /dev/null @@ -1,56 +0,0 @@ -/*- - * 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 _VIRTIO_NET_CDEV_H -#define _VIRTIO_NET_CDEV_H - -#include -#include - -#include "vhost-net.h" - -/* - * Structure used to identify device context. - */ -struct vhost_cuse_device_ctx { - pid_t pid; /* PID of process calling the IOCTL. */ - int vid; /* Virtio-net device ID */ -}; - -int -cuse_set_mem_table(struct vhost_cuse_device_ctx ctx, - const struct vhost_memory *mem_regions_addr, uint32_t nregions); - -int -cuse_set_backend(struct vhost_cuse_device_ctx ctx, struct vhost_vring_file *); - -#endif diff --git a/mk/rte.app.mk b/mk/rte.app.mk index 1a0095b021..56103c55c3 100644 --- a/mk/rte.app.mk +++ b/mk/rte.app.mk @@ -157,9 +157,6 @@ _LDLIBS-$(CONFIG_RTE_LIBRTE_METER) += -lm ifeq ($(CONFIG_RTE_LIBRTE_VHOST_NUMA),y) _LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST) += -lnuma endif -ifeq ($(CONFIG_RTE_LIBRTE_VHOST_USER),n) -_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST) += -lfuse -endif _LDLIBS-$(CONFIG_RTE_PORT_PCAP) += -lpcap endif # !CONFIG_RTE_BUILD_SHARED_LIBS