Imported Upstream version 16.11

Change-Id: I1944c65ddc88a9ad70f8c0eb6731552b84fbcb77
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

1 files changed, 0 insertions, 433 deletions

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 552be7d4..00000000
--- 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 <stdint.h>
-#include <dirent.h>
-#include <linux/vhost.h>
-#include <linux/virtio_net.h>
-#include <fuse/cuse_lowlevel.h>
-#include <stddef.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/eventfd.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <linux/if_tun.h>
-#include <linux/if.h>
-#include <errno.h>
-
-#include <rte_log.h>
-
-#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;
-	}
-}