From 055c52583a2794da8ba1e85a48cce3832372b12f Mon Sep 17 00:00:00 2001 From: Luca Boccassi Date: Wed, 8 Nov 2017 14:15:11 +0000 Subject: New upstream version 17.11-rc3 Change-Id: I6a5baa40612fe0c20f30b5fa773a6cbbac63a685 Signed-off-by: Luca Boccassi --- drivers/net/xenvirt/rte_xen_lib.c | 454 -------------------------------------- 1 file changed, 454 deletions(-) delete mode 100644 drivers/net/xenvirt/rte_xen_lib.c (limited to 'drivers/net/xenvirt/rte_xen_lib.c') diff --git a/drivers/net/xenvirt/rte_xen_lib.c b/drivers/net/xenvirt/rte_xen_lib.c deleted file mode 100644 index 6c9a1d49..00000000 --- a/drivers/net/xenvirt/rte_xen_lib.c +++ /dev/null @@ -1,454 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2015 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 -#if __XEN_LATEST_INTERFACE_VERSION__ < 0x00040200 -#include -#else -#include -#endif -#include - -#include -#include -#include - -#include "rte_xen_lib.h" - -/* - * The grant node format in xenstore for vring/mpool is: - * 0_rx_vring_gref = "gref1#, gref2#, gref3#" - * 0_mempool_gref = "gref1#, gref2#, gref3#" - * each gref# is a grant reference for a shared page. - * In each shared page, we store the grant_node_item items. - */ -struct grant_node_item { - uint32_t gref; - uint32_t pfn; -} __attribute__((packed)); - -/* fd for xen_gntalloc driver, used to allocate grant pages*/ -int gntalloc_fd = -1; - -/* xenstore path for local domain, now it is '/local/domain/domid/' */ -static char *dompath = NULL; -/* handle to xenstore read/write operations */ -static struct xs_handle *xs = NULL; -/* flag to indicate if xenstore cleanup is required */ -static bool is_xenstore_cleaned_up; - -/* - * Reserve a virtual address space. - * On success, returns the pointer. On failure, returns NULL. - */ -void * -get_xen_virtual(size_t size, size_t page_sz) -{ - void *addr; - uintptr_t aligned_addr; - - addr = mmap(NULL, size + page_sz, PROT_READ, MAP_SHARED | MAP_ANONYMOUS, -1, 0); - if (addr == MAP_FAILED) { - RTE_LOG(ERR, PMD, "failed get a virtual area\n"); - return NULL; - } - - aligned_addr = RTE_ALIGN_CEIL((uintptr_t)addr, page_sz); - addr = (void *)(aligned_addr); - - return addr; -} - -/* - * Get the physical address for virtual memory starting at va. - */ -int -get_phys_map(void *va, phys_addr_t pa[], uint32_t pg_num, uint32_t pg_sz) -{ - int32_t fd, rc = 0; - uint32_t i, nb; - off_t ofs; - - ofs = (uintptr_t)va / pg_sz * sizeof(*pa); - nb = pg_num * sizeof(*pa); - - if ((fd = open(PAGEMAP_FNAME, O_RDONLY)) < 0 || - (rc = pread(fd, pa, nb, ofs)) < 0 || - (rc -= nb) != 0) { - RTE_LOG(ERR, PMD, "%s: failed read of %u bytes from \'%s\' " - "at offset %lu, error code: %d\n", - __func__, nb, PAGEMAP_FNAME, (unsigned long)ofs, errno); - rc = ENOENT; - } - - close(fd); - for (i = 0; i != pg_num; i++) - pa[i] = (pa[i] & PAGEMAP_PFN_MASK) * pg_sz; - - return rc; -} - -int -gntalloc_open(void) -{ - gntalloc_fd = open(XEN_GNTALLOC_FNAME, O_RDWR); - return (gntalloc_fd != -1) ? 0 : -1; -} - -void -gntalloc_close(void) -{ - if (gntalloc_fd != -1) - close(gntalloc_fd); - gntalloc_fd = -1; -} - -void * -gntalloc(size_t size, uint32_t *gref, uint64_t *start_index) -{ - int page_size = getpagesize(); - uint32_t i, pg_num; - void *va; - int rv; - struct ioctl_gntalloc_alloc_gref *arg; - struct ioctl_gntalloc_dealloc_gref arg_d; - - if (size % page_size) { - RTE_LOG(ERR, PMD, "%s: %zu isn't multiple of page size\n", - __func__, size); - return NULL; - } - - pg_num = size / page_size; - arg = malloc(sizeof(*arg) + (pg_num - 1) * sizeof(uint32_t)); - if (arg == NULL) - return NULL; - arg->domid = DOM0_DOMID; - arg->flags = GNTALLOC_FLAG_WRITABLE; - arg->count = pg_num; - - rv = ioctl(gntalloc_fd, IOCTL_GNTALLOC_ALLOC_GREF, arg); - if (rv) { - RTE_LOG(ERR, PMD, "%s: ioctl error\n", __func__); - free(arg); - return NULL; - } - - va = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, gntalloc_fd, arg->index); - if (va == MAP_FAILED) { - RTE_LOG(ERR, PMD, "%s: mmap failed\n", __func__); - arg_d.count = pg_num; - arg_d.index = arg->index; - ioctl(gntalloc_fd, IOCTL_GNTALLOC_DEALLOC_GREF, arg_d); - free(arg); - return NULL; - } - - if (gref) { - for (i = 0; i < pg_num; i++) { - gref[i] = arg->gref_ids[i]; - } - } - if (start_index) - *start_index = arg->index; - - free(arg); - - return va; -} - -int -grefwatch_from_alloc(uint32_t *gref, void **pptr) -{ - int rv; - void *ptr; - int pg_size = getpagesize(); - struct ioctl_gntalloc_alloc_gref arg = { - .domid = DOM0_DOMID, - .flags = GNTALLOC_FLAG_WRITABLE, - .count = 1 - }; - struct ioctl_gntalloc_dealloc_gref arg_d; - struct ioctl_gntalloc_unmap_notify notify = { - .action = UNMAP_NOTIFY_CLEAR_BYTE - }; - - rv = ioctl(gntalloc_fd, IOCTL_GNTALLOC_ALLOC_GREF, &arg); - if (rv) { - RTE_LOG(ERR, PMD, "%s: ioctl error\n", __func__); - return -1; - } - - ptr = (void *)mmap(NULL, pg_size, PROT_READ|PROT_WRITE, MAP_SHARED, gntalloc_fd, arg.index); - arg_d.index = arg.index; - arg_d.count = 1; - if (ptr == MAP_FAILED) { - RTE_LOG(ERR, PMD, "%s: mmap failed\n", __func__); - ioctl(gntalloc_fd, IOCTL_GNTALLOC_DEALLOC_GREF, &arg_d); - return -1; - } - if (pptr) - *pptr = ptr; - if (gref) - *gref = arg.gref_ids[0]; - - notify.index = arg.index; - rv = ioctl(gntalloc_fd, IOCTL_GNTALLOC_SET_UNMAP_NOTIFY, ¬ify); - if (rv) { - RTE_LOG(ERR, PMD, "%s: unmap notify failed\n", __func__); - munmap(ptr, pg_size); - ioctl(gntalloc_fd, IOCTL_GNTALLOC_DEALLOC_GREF, &arg_d); - return -1; - } - - return 0; -} - -void -gntfree(void *va, size_t sz, uint64_t start_index) -{ - struct ioctl_gntalloc_dealloc_gref arg_d; - - if (va && sz) { - munmap(va, sz); - arg_d.count = sz / getpagesize(); - arg_d.index = start_index; - ioctl(gntalloc_fd, IOCTL_GNTALLOC_DEALLOC_GREF, &arg_d); - } -} - -static int -xenstore_cleanup(void) -{ - char store_path[PATH_MAX] = {0}; - - if (snprintf(store_path, sizeof(store_path), - "%s%s", dompath, DPDK_XENSTORE_NODE) == -1) - return -1; - - if (xs_rm(xs, XBT_NULL, store_path) == false) { - RTE_LOG(ERR, PMD, "%s: failed cleanup node\n", __func__); - return -1; - } - - return 0; -} - -int -xenstore_init(void) -{ - unsigned int len, domid; - char *buf; - char *end; - - xs = xs_domain_open(); - if (xs == NULL) { - RTE_LOG(ERR, PMD,"%s: xs_domain_open failed\n", __func__); - return -1; - } - buf = xs_read(xs, XBT_NULL, "domid", &len); - if (buf == NULL) { - RTE_LOG(ERR, PMD, "%s: failed read domid\n", __func__); - return -1; - } - errno = 0; - domid = strtoul(buf, &end, 0); - if (errno != 0 || end == NULL || end == buf || domid == 0) - return -1; - - RTE_LOG(INFO, PMD, "retrieved dom ID = %d\n", domid); - - dompath = xs_get_domain_path(xs, domid); - if (dompath == NULL) - return -1; - - xs_transaction_start(xs); /* When to stop transaction */ - - if (is_xenstore_cleaned_up == 0) { - if (xenstore_cleanup()) - return -1; - is_xenstore_cleaned_up = 1; - } - - return 0; -} - -int -xenstore_uninit(void) -{ - xs_close(xs); - - if (is_xenstore_cleaned_up == 0) { - if (xenstore_cleanup()) - return -1; - is_xenstore_cleaned_up = 1; - } - free(dompath); - dompath = NULL; - - return 0; -} - -int -xenstore_write(const char *key_str, const char *val_str) -{ - char grant_path[PATH_MAX]; - int rv, len; - - if (xs == NULL) { - RTE_LOG(ERR, PMD, "%s: xenstore init failed\n", __func__); - return -1; - } - rv = snprintf(grant_path, sizeof(grant_path), "%s%s", dompath, key_str); - if (rv == -1) { - RTE_LOG(ERR, PMD, "%s: snprintf %s %s failed\n", - __func__, dompath, key_str); - return -1; - } - len = strnlen(val_str, PATH_MAX); - - if (xs_write(xs, XBT_NULL, grant_path, val_str, len) == false) { - RTE_LOG(ERR, PMD, "%s: xs_write failed\n", __func__); - return -1; - } - - return 0; -} - -int -grant_node_create(uint32_t pg_num, uint32_t *gref_arr, phys_addr_t *pa_arr, char *val_str, size_t str_size) -{ - uint64_t start_index; - int pg_size; - uint32_t pg_shift; - void *ptr = NULL; - uint32_t count, entries_per_pg; - uint32_t i, j = 0, k = 0; - uint32_t *gref_tmp; - int first = 1; - char tmp_str[PATH_MAX] = {0}; - int rv = -1; - - pg_size = getpagesize(); - if (rte_is_power_of_2(pg_size) == 0) { - return -1; - } - pg_shift = rte_bsf32(pg_size); - if (pg_size % sizeof(struct grant_node_item)) { - RTE_LOG(ERR, PMD, "pg_size isn't a multiple of grant node item\n"); - return -1; - } - - entries_per_pg = pg_size / sizeof(struct grant_node_item); - count = (pg_num + entries_per_pg - 1 ) / entries_per_pg; - gref_tmp = malloc(count * sizeof(uint32_t)); - if (gref_tmp == NULL) - return -1; - ptr = gntalloc(pg_size * count, gref_tmp, &start_index); - if (ptr == NULL) { - RTE_LOG(ERR, PMD, "%s: gntalloc error of %d pages\n", __func__, count); - free(gref_tmp); - return -1; - } - - while (j < pg_num) { - if (first) { - rv = snprintf(val_str, str_size, "%u", gref_tmp[k]); - first = 0; - } else { - snprintf(tmp_str, PATH_MAX, "%s", val_str); - rv = snprintf(val_str, str_size, "%s,%u", tmp_str, gref_tmp[k]); - } - k++; - if (rv == -1) - break; - - for (i = 0; i < entries_per_pg && j < pg_num ; i++) { - ((struct grant_node_item *)ptr)->gref = gref_arr[j]; - ((struct grant_node_item *)ptr)->pfn = pa_arr[j] >> pg_shift; - ptr = RTE_PTR_ADD(ptr, sizeof(struct grant_node_item)); - j++; - } - } - if (rv == -1) { - gntfree(ptr, pg_size * count, start_index); - } else - rv = 0; - free(gref_tmp); - return rv; -} - - -int -grant_gntalloc_mbuf_pool(struct rte_mempool *mpool, uint32_t pg_num, uint32_t *gref_arr, phys_addr_t *pa_arr, int mempool_idx) -{ - char key_str[PATH_MAX] = {0}; - char val_str[PATH_MAX] = {0}; - void *mempool_obj_va; - - if (grant_node_create(pg_num, gref_arr, pa_arr, val_str, sizeof(val_str))) { - return -1; - } - - if (snprintf(key_str, sizeof(key_str), - DPDK_XENSTORE_PATH"%d"MEMPOOL_XENSTORE_STR, mempool_idx) == -1) - return -1; - if (xenstore_write(key_str, val_str) == -1) - return -1; - - if (snprintf(key_str, sizeof(key_str), - DPDK_XENSTORE_PATH"%d"MEMPOOL_VA_XENSTORE_STR, mempool_idx) == -1) - return -1; - if (mpool->nb_mem_chunks != 1) { - RTE_LOG(ERR, PMD, - "mempool with more than 1 chunk is not supported\n"); - return -1; - } - mempool_obj_va = STAILQ_FIRST(&mpool->mem_list)->addr; - if (snprintf(val_str, sizeof(val_str), "%"PRIxPTR, - (uintptr_t)mempool_obj_va) == -1) - return -1; - if (xenstore_write(key_str, val_str) == -1) - return -1; - - return 0; -} -- cgit 1.2.3-korg