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[54.197.127.237]) by mx.google.com with ESMTP id d12si1245988qtc.302.2018.01.04.08.02.36; Thu, 04 Jan 2018 08:02:36 -0800 (PST) Received-SPF: pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.197.127.237 as permitted sender) client-ip=54.197.127.237; Authentication-Results: mx.google.com; spf=pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.197.127.237 as permitted sender) smtp.mailfrom=lng-odp-bounces@lists.linaro.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=yandex.ru Received: by lists.linaro.org (Postfix, from userid 109) id 756CB614E1; Thu, 4 Jan 2018 16:02:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on ip-10-142-244-252 X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from [127.0.0.1] (localhost [127.0.0.1]) by lists.linaro.org (Postfix) with ESMTP id 80E8260B51; Thu, 4 Jan 2018 16:00:35 +0000 (UTC) X-Original-To: lng-odp@lists.linaro.org Delivered-To: lng-odp@lists.linaro.org Received: by lists.linaro.org (Postfix, from userid 109) id 40A2D60A6E; Thu, 4 Jan 2018 16:00:23 +0000 (UTC) Received: from forward101j.mail.yandex.net (forward101j.mail.yandex.net [5.45.198.241]) by lists.linaro.org (Postfix) with ESMTPS id 0F75260960 for ; Thu, 4 Jan 2018 16:00:13 +0000 (UTC) Received: from mxback6o.mail.yandex.net (mxback6o.mail.yandex.net [IPv6:2a02:6b8:0:1a2d::20]) by forward101j.mail.yandex.net (Yandex) with ESMTP id B081A1242ACD for ; Thu, 4 Jan 2018 19:00:11 +0300 (MSK) Received: from smtp4j.mail.yandex.net (smtp4j.mail.yandex.net [2a02:6b8:0:1619::15:6]) by mxback6o.mail.yandex.net (nwsmtp/Yandex) with ESMTP id 6enygnZ2B0-0BaCXPUo; Thu, 04 Jan 2018 19:00:11 +0300 Received: by smtp4j.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id sq4UyMZYf3-0A90GMJ7; Thu, 04 Jan 2018 19:00:10 +0300 (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (Client certificate not present) From: Github ODP bot To: lng-odp@lists.linaro.org Date: Thu, 4 Jan 2018 19:00:08 +0300 Message-Id: <1515081609-11432-2-git-send-email-odpbot@yandex.ru> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1515081609-11432-1-git-send-email-odpbot@yandex.ru> References: <1515081609-11432-1-git-send-email-odpbot@yandex.ru> Github-pr-num: 380 Subject: [lng-odp] [PATCH CATERPILLAR v1 1/2] linux-gen: mediated devices common code X-BeenThere: lng-odp@lists.linaro.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: "The OpenDataPlane \(ODP\) List" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" From: Ilias Apalodimas Add APIs to create/destroy mediated devices, manipulate their regions and allocate/free DMA areas accessible by both ODP and HW. Signed-off-by: Ilias Apalodimas Signed-off-by: Mykyta Iziumtsev --- /** Email created from pull request 380 (MykytaI:caterpillar_mdev_i40e) ** https://github.com/Linaro/odp/pull/380 ** Patch: https://github.com/Linaro/odp/pull/380.patch ** Base sha: 4d17f8ae64aba0e6f24877be30f86ae5880cef7e ** Merge commit sha: 14e74248a279211cdd7f8267140003e8a5cb6c33 **/ configure.ac | 1 + platform/linux-generic/Makefile.am | 3 + platform/linux-generic/m4/configure.m4 | 1 + platform/linux-generic/m4/odp_mdev.m4 | 34 ++ platform/linux-generic/pktio/mdev.c | 585 +++++++++++++++++++++++++++ platform/linux-generic/pktio/mdev.h | 61 +++ platform/linux-generic/pktio/uapi_net_mdev.h | 33 ++ 7 files changed, 718 insertions(+) create mode 100644 platform/linux-generic/m4/odp_mdev.m4 create mode 100644 platform/linux-generic/pktio/mdev.c create mode 100644 platform/linux-generic/pktio/mdev.h create mode 100644 platform/linux-generic/pktio/uapi_net_mdev.h diff --git a/configure.ac b/configure.ac index d774ae86b..3f5092320 100644 --- a/configure.ac +++ b/configure.ac @@ -410,4 +410,5 @@ AC_MSG_RESULT([ test_helper: ${test_helper} test_example: ${test_example} user_guides: ${user_guides} + mdev: ${mdev_support} ]) diff --git a/platform/linux-generic/Makefile.am b/platform/linux-generic/Makefile.am index 8813aea92..9a6a7cc15 100644 --- a/platform/linux-generic/Makefile.am +++ b/platform/linux-generic/Makefile.am @@ -181,6 +181,8 @@ noinst_HEADERS = \ pktio/common.h \ pktio/sysfs.h \ pktio/dpdk.h \ + pktio/mdev.h \ + pktio/uapi_net_mdev.h \ include/odp_pktio_ops_ipc.h \ include/odp_pktio_ops_loopback.h \ include/odp_pktio_ops_netmap.h \ @@ -255,6 +257,7 @@ __LIB__libodp_linux_la_SOURCES = \ pktio/sysfs.c \ pktio/tap.c \ pktio/ring.c \ + pktio/mdev.c \ pool/generic.c \ pool/subsystem.c \ odp_pkt_queue.c \ diff --git a/platform/linux-generic/m4/configure.m4 b/platform/linux-generic/m4/configure.m4 index fc29f9cb3..a0d65a319 100644 --- a/platform/linux-generic/m4/configure.m4 +++ b/platform/linux-generic/m4/configure.m4 @@ -14,6 +14,7 @@ m4_include([platform/linux-generic/m4/odp_modules.m4]) m4_include([platform/linux-generic/m4/odp_netmap.m4]) m4_include([platform/linux-generic/m4/odp_dpdk.m4]) m4_include([platform/linux-generic/m4/odp_schedule.m4]) +m4_include([platform/linux-generic/m4/odp_mdev.m4]) m4_include([platform/linux-generic/m4/performance.m4]) diff --git a/platform/linux-generic/m4/odp_mdev.m4 b/platform/linux-generic/m4/odp_mdev.m4 new file mode 100644 index 000000000..64f9e0969 --- /dev/null +++ b/platform/linux-generic/m4/odp_mdev.m4 @@ -0,0 +1,34 @@ +########################################################################## +# Enable mdev support +########################################################################## +mdev_support=no +AC_ARG_ENABLE([mdev_support], + [ --enable-mdev-support include mediated device drivers support], + [if test x$enableval = xyes; then + mdev_support=yes + fi]) + +########################################################################## +# Save and set temporary compilation flags +########################################################################## +OLD_CPPFLAGS=$CPPFLAGS +CPPFLAGS="$MDEV_CPPFLAGS $CPPFLAGS" + +########################################################################## +# Check for mdev availability +########################################################################## +if test x$mdev_support = xyes +then + AC_DEFINE([ODP_MDEV], [1], + [Define to 1 to enable mediated device drivers support]) + AC_SUBST([MDEV_CPPFLAGS]) +else + mdev_support=no +fi + +########################################################################## +# Restore old saved variables +########################################################################## +CPPFLAGS=$OLD_CPPFLAGS + +AM_CONDITIONAL([mdev_support], [test x$mdev_support = xyes ]) diff --git a/platform/linux-generic/pktio/mdev.c b/platform/linux-generic/pktio/mdev.c new file mode 100644 index 000000000..a39b959c2 --- /dev/null +++ b/platform/linux-generic/pktio/mdev.c @@ -0,0 +1,585 @@ +/* Copyright (c) 2018, Linaro Limited + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include "config.h" + +#ifdef ODP_MDEV + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +#include +#include + +/** + * returns a valid VFIO container + * fd must be closed by caller + */ +static int get_container(void) +{ + int ret; + int container; + /* Create a new container */ + container = open("/dev/vfio/vfio", O_RDWR); + + if (container < 0) + return container; + + ret = ioctl(container, VFIO_GET_API_VERSION); + if (ret != VFIO_API_VERSION) { + ODP_ERR("Unknown API version\n"); + goto out; + } + + if (!ioctl(container, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) { + ODP_ERR("Doesn't support the IOMMU driver we want\n"); + goto out; + } + + return container; +out: + close(container); + container = -1; + return ret; +} + +/** + * returns a valid VFIO group + * fd must be close by caller + */ +static int get_group(int grp_id) +{ + char path[64]; + int ret; + int group; + struct vfio_group_status group_status = { + .argsz = sizeof(group_status) + }; + + snprintf(path, sizeof(path), "/dev/vfio/%d", grp_id); + group = open(path, O_RDWR); + if (group < 0) { + ODP_ERR("Failed to open %s, %d (%s)\n", + path, group, strerror(errno)); + return group; + } + + ret = ioctl(group, VFIO_GROUP_GET_STATUS, &group_status); + + if (ret < 0) { + ODP_ERR("ioctl(VFIO_GROUP_GET_STATUS) failed\n"); + goto out; + } + + /* Test the group is viable and available */ + if (!(group_status.flags & VFIO_GROUP_FLAGS_VIABLE)) { + ODP_ERR("Group is not viable\n"); + goto out; + } + + return group; +out: + close(group); + group = -1; + return ret; +} + +static void vfio_find_sparse_mmaps(struct vfio_info_cap_header *hdr, + struct vfio_region_info_cap_sparse_mmap + **sparse) +{ + *sparse = + odp_container_of(hdr, struct vfio_region_info_cap_sparse_mmap, + header); +} + +static struct vfio_info_cap_header * +vfio_get_region_info_cap(struct vfio_region_info *info, __u16 id) +{ + struct vfio_info_cap_header *hdr; + void *ptr = info; + + if (!(info->flags & VFIO_REGION_INFO_FLAG_CAPS)) + return NULL; + + for (hdr = + (struct vfio_info_cap_header *)((char *)ptr + info->cap_offset); + hdr != ptr; + hdr = (struct vfio_info_cap_header *)((char *)ptr + hdr->next)) { + if (hdr->id == id) + return hdr; + } + + return NULL; +} + +static struct vfio_info_cap_header * +vfio_get_cap_info(struct vfio_region_info *region_info, __u16 id) +{ + struct vfio_info_cap_header *caps = NULL; + + caps = vfio_get_region_info_cap(region_info, id); + + return caps; +} + +int vfio_get_region_sparse_mmaps(struct vfio_region_info *region_info, + struct vfio_region_info_cap_sparse_mmap + **sparse) +{ + struct vfio_info_cap_header *caps = NULL; + int ret = -ENOENT; + + if (region_info->flags & VFIO_REGION_INFO_FLAG_CAPS && + region_info->argsz > sizeof(*region_info)) { + caps = vfio_get_cap_info(region_info, + VFIO_REGION_INFO_CAP_SPARSE_MMAP); + if (!caps) + goto out; + vfio_find_sparse_mmaps(caps, sparse); + if (*sparse) { + for (uint32_t i = 0; i < (*sparse)->nr_areas; i++) + ODP_DBG("Sparse region: %d 0x%llx %llu\n", i, + (*sparse)->areas[i].offset, + (*sparse)->areas[i].size); + } + + ret = 0; + } + +out: + return ret; +} + +/** Match capability type + * returns 0 on succcess + */ +int vfio_get_region_cap_type(struct vfio_region_info *region_info, + mdev_region_class_t *class_info) +{ + struct vfio_info_cap_header *caps = NULL; + int ret = 0; + struct vfio_region_info_cap_type *cap_type; + + if (region_info->flags & VFIO_REGION_INFO_FLAG_CAPS && + region_info->argsz > sizeof(*region_info)) { + caps = vfio_get_cap_info(region_info, + VFIO_REGION_INFO_CAP_TYPE); + if (!caps) { + ret = -EINVAL; + goto out; + } + + cap_type = + odp_container_of(caps, struct vfio_region_info_cap_type, + header); + + class_info->type = cap_type->type; + class_info->subtype = cap_type->subtype; + } +out: + return ret; +} + +/** + * Get specific region info + */ +static struct vfio_region_info *vfio_get_region(mdev_device_t *mdev, + __u32 region) +{ + int ret; + struct vfio_region_info *region_info = NULL; + + ODP_DBG("Region:%d\n", region); + region_info = calloc(1, sizeof(*region_info)); + if (!region_info) + goto out; + + region_info->index = region; + region_info->argsz = sizeof(*region_info); + ret = ioctl(mdev->device, VFIO_DEVICE_GET_REGION_INFO, region_info); + if (ret < 0) { + ODP_ERR("Failed to get PCI region info\n"); + goto out; + } + + if (!region_info->size) { + ODP_DBG("region info %d is empty, skipping\n", region); + goto out; + } + + if (region_info->argsz > sizeof(*region_info)) { + struct vfio_region_info *tmp; + + tmp = realloc(region_info, region_info->argsz); + if (!tmp) + goto out; + + region_info = tmp; + + ODP_DBG("region info %d with extended capabilities size: %u\n", + region, region_info->argsz); + ret = ioctl(mdev->device, VFIO_DEVICE_GET_REGION_INFO, + region_info); + if (ret < 0 || !region_info->size) { + ODP_ERR("Failed to get PCI region info\n"); + goto out; + } + } + + return region_info; + +out: + if (region_info) + free(region_info); + return NULL; +} + +/** + * mmap a VFIO region + */ +void *mdev_region_mmap(mdev_device_t *mdev, uint64_t offset, uint64_t size) +{ + void *addr; + + /* Make sure we're page aligned */ + ODP_ASSERT(offset == ROUNDUP_ALIGN(offset, ODP_PAGE_SIZE)); + ODP_ASSERT(size == ROUNDUP_ALIGN(size, ODP_PAGE_SIZE)); + + if (mdev->mappings_count >= ARRAY_SIZE(mdev->mappings)) + return MAP_FAILED; + + addr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, + mdev->device, offset); + if (addr == MAP_FAILED) + return addr; + + mdev->mappings[mdev->mappings_count].addr = addr; + mdev->mappings[mdev->mappings_count].size = size; + mdev->mappings_count++; + + return addr; +} + +int mdev_dma_area_alloc(mdev_device_t *mdev, mdev_dma_area_t *dma_area) +{ + struct vfio_iommu_type1_dma_map req; + void *tmp; + + /* Make sure we're page aligned */ + if (dma_area->size == ROUNDUP_ALIGN(dma_area->size, ODP_PAGE_SIZE)) + return -EINVAL; + + memset(&req, 0, sizeof(req)); + req.argsz = sizeof(req); + + tmp = mmap(NULL, dma_area->size, PROT_READ | PROT_WRITE, + MAP_SHARED | MAP_ANONYMOUS | MAP_NORESERVE | MAP_FIXED, -1, + 0); + if (tmp == MAP_FAILED) { + ODP_ERR("mmap failed\n"); + return -EFAULT; + } + + dma_area->vaddr = (uint64_t)tmp; + + req.vaddr = dma_area->vaddr; + req.size = dma_area->size; + req.flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE; + + if (ioctl(mdev->device, VFIO_IOMMU_MAP_DMA, &req) < 0) { + ODP_ERR("ioctl failed\n"); + return -EFAULT; + } + + dma_area->iova = req.iova; + + ODP_DBG("dma_area alloc: %llx@%llx -> %llx\n", dma_area->size, + dma_area->vaddr, dma_area->iova); + + return 0; +} + +int mdev_dma_area_free(mdev_device_t *mdev, mdev_dma_area_t *dma_area) +{ + struct vfio_iommu_type1_dma_unmap req; + + memset(&req, 0, sizeof(req)); + req.argsz = sizeof(req); + req.iova = dma_area->iova; + req.size = dma_area->size; + req.flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE; + + if (ioctl(mdev->device, VFIO_IOMMU_UNMAP_DMA, &req) < 0) { + ODP_ERR("ioctl failed\n"); + return -EFAULT; + } + + if (munmap((void *)dma_area->vaddr, dma_area->size) < 0) { + ODP_ERR("munmap failed\n"); + return -EFAULT; + } + + ODP_DBG("dma_area free: %llx@%llx -> %llx\n", dma_area->size, + dma_area->vaddr, dma_area->iova); + + return 0; +} + +static char *mdev_basename(char *path) +{ + char *rpath; + + rpath = basename(path); + if (rpath) + return rpath; + + return NULL; +} + +static int mdev_readlink(const char *path, char *link, size_t linksz) +{ + ssize_t len; + + len = readlink(path, link, linksz - 1); + if (len != -1) { + link[len] = '\0'; + return 0; + } + return -1; +} + +/** + * returns group_id or -1 on fail and fills group_uuid + */ +static int mdev_sysfs_discover(const char *mod_name, const char *if_name, + char *uuid, size_t sz) +{ + int ret; + char *driver, *iommu_group; + char sysfs_path[2048], sysfs_link[2048]; + DIR *dir; + struct dirent *dp; + + /* Don't put / on the end of the path */ + snprintf(sysfs_path, sizeof(sysfs_path), + "/sys/class/net/%s/device/driver", if_name); + ret = mdev_readlink(sysfs_path, sysfs_link, sizeof(sysfs_link)); + if (ret) { + ODP_ERR("Can't locate sysfs driver path\n"); + return -1; + } + + driver = mdev_basename(sysfs_link); + if (!driver) { + ODP_ERR("Can't driver in sysfs\n"); + return -1; + } + + if (strcmp(driver, mod_name)) { + ODP_ERR("Invalid driver name\n"); + return -1; + } + + snprintf(sysfs_path, sizeof(sysfs_path), + "/sys/class/net/%s/device/mdev_supported_types/%s-netmdev/devices/", + if_name, driver); + + dir = opendir(sysfs_path); + if (!dir) + return -1; + /* FIXME only the last uuid will be returned now */ + while ((dp = readdir(dir))) { + if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) + continue; + else + strncpy(uuid, dp->d_name, sz); + } + closedir(dir); + + if (!uuid[0]) + return -1; + + snprintf(sysfs_path, sizeof(sysfs_path), + "/sys/bus/mdev/devices/%s/iommu_group", uuid); + ret = mdev_readlink(sysfs_path, sysfs_link, sizeof(sysfs_link)); + if (ret) { + ODP_ERR("Can't locate IOMMU sysfs path\n"); + return -1; + } + + iommu_group = mdev_basename(sysfs_link); + if (!iommu_group) { + ODP_ERR("Can't locate iommu group in sysfs\n"); + return -1; + } + ret = atoi(iommu_group); + + return ret; +} + +/** + * Initialize VFIO variables. + * set IOMMU and get device regions + */ +static int vfio_init_dev(int grp, int container, + struct vfio_group_status *grp_status, + struct vfio_iommu_type1_info *iommu_info, + struct vfio_device_info *dev_info, char *grp_uuid) +{ + int device = -1; + int ret; + + ret = ioctl(container, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU); + if (ret < 0) { + ODP_ERR("Doesn't support the IOMMU driver we want\n"); + goto out; + } + + /* Test the group is viable and available */ + ret = ioctl(grp, VFIO_GROUP_GET_STATUS, grp_status); + if (ret < 0 || !(grp_status->flags & VFIO_GROUP_FLAGS_VIABLE)) { + ODP_ERR("Can't get status\n"); + goto out; + } + + ret = ioctl(grp, VFIO_GROUP_SET_CONTAINER, &container); + if (ret < 0) { + ODP_ERR("Failed to set container\n"); + goto out; + } + + ret = ioctl(container, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU); + if (ret < 0) { + ODP_ERR("Failed to set IOMMU\n"); + goto out; + } + + ret = ioctl(container, VFIO_IOMMU_GET_INFO, iommu_info); + if (ret < 0) { + ODP_ERR("Failed to get IOMMU info\n"); + goto out; + } + + ODP_DBG("iova_pgsizes bitmask=0x%llx\n", iommu_info->iova_pgsizes); + /* Get a file descriptor for the device */ + device = ioctl(grp, VFIO_GROUP_GET_DEVICE_FD, grp_uuid); + if (device < 0) { + ODP_ERR("Failed to get device FD\n"); + goto out; + } + + /* Test and setup the device */ + ret = ioctl(device, VFIO_DEVICE_GET_INFO, dev_info); + if (ret < 0) { + ODP_ERR("Failed to get device info\n"); + goto out; + } + + ODP_DBG("Device %d Regions: %d, irqs:%d\n", device, + dev_info->num_regions, dev_info->num_irqs); + +out: + return device; +} + +int mdev_device_create(mdev_device_t *mdev, const char *mod_name, + const char *if_name, + mdev_region_info_cb_t region_info_cb) +{ + struct vfio_group_status group_status = { + .argsz = sizeof(group_status) + }; + struct vfio_iommu_type1_info iommu_info = { + .argsz = sizeof(iommu_info) + }; + struct vfio_device_info device_info = { + .argsz = sizeof(device_info) + }; + int ret; + + memset(mdev, 0, sizeof(*mdev)); + mdev->container = -1; + mdev->group = -1; + + strncpy(mdev->if_name, if_name, sizeof(mdev->if_name) - 1); + + mdev->group_id = + mdev_sysfs_discover(mod_name, mdev->if_name, mdev->group_uuid, + sizeof(mdev->group_uuid)); + if (mdev->group_id < 0) + goto fail; + + mdev->container = get_container(); + if (mdev->container < 0) + goto fail; + + mdev->group = get_group(mdev->group_id); + if (mdev->group < 0) + goto fail; + + mdev->device = + vfio_init_dev(mdev->group, mdev->container, &group_status, + &iommu_info, &device_info, mdev->group_uuid); + if (mdev->device < 0) + goto fail; + + ret = -EINVAL; + for (uint32_t region = 0; region < device_info.num_regions; region++) { + struct vfio_region_info *region_info; + + region_info = vfio_get_region(mdev, region); + if (!region_info) + continue; + + ret = region_info_cb(mdev, region_info); + if (ret < 0) { + ODP_ERR("Region info cb fail on region_info[%u]\n", + region); + return -1; + } + + free(region_info); + region_info = NULL; + ret = 0; + } + + return ret; + +fail: + return -1; +} + +void mdev_device_destroy(mdev_device_t *mdev) +{ + if (mdev->group != -1) + close(mdev->group); + if (mdev->container != -1) + close(mdev->container); + + for (uint16_t i = 0; i < mdev->mappings_count; i++) + munmap(mdev->mappings[i].addr, mdev->mappings[i].size); +} + +#endif /* ODP_MDEV */ diff --git a/platform/linux-generic/pktio/mdev.h b/platform/linux-generic/pktio/mdev.h new file mode 100644 index 000000000..5249a6d05 --- /dev/null +++ b/platform/linux-generic/pktio/mdev.h @@ -0,0 +1,61 @@ +/* Copyright (c) 2018, Linaro Limited + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef ODP_PKTIO_MDEV_H_ +#define ODP_PKTIO_MDEV_H_ + +#include +#include + +#define NET_MDEV_PREFIX "mdev:" + +typedef struct { + uint16_t type; + uint16_t subtype; +} mdev_region_class_t; + +typedef struct { + uint64_t vaddr; + uint64_t iova; + uint64_t size; +} mdev_dma_area_t; + +typedef struct { + char if_name[IF_NAMESIZE]; /**< Interface name */ + + int container; + int group; + int device; + + int group_id; + char group_uuid[64]; + + struct { + uint8_t *addr; + size_t size; + } mappings[256]; + uint16_t mappings_count; +} mdev_device_t; + +typedef int (*mdev_region_info_cb_t)(mdev_device_t *, + struct vfio_region_info *); + +int mdev_device_create(mdev_device_t *mdev, const char *mod_name, + const char *if_name, mdev_region_info_cb_t cb); +void mdev_device_destroy(mdev_device_t *mdev); + +void *mdev_region_mmap(mdev_device_t *mdev, uint64_t offset, uint64_t size); + +int vfio_get_region_cap_type(struct vfio_region_info *region_info, + mdev_region_class_t *type_info); +int vfio_get_region_sparse_mmaps(struct vfio_region_info *region_info, + struct vfio_region_info_cap_sparse_mmap + **sparse); + +int mdev_dma_area_alloc(mdev_device_t *mdev, mdev_dma_area_t *dma_area); +int mdev_dma_area_free(mdev_device_t *mdev, mdev_dma_area_t *dma_area); + +#endif diff --git a/platform/linux-generic/pktio/uapi_net_mdev.h b/platform/linux-generic/pktio/uapi_net_mdev.h new file mode 100644 index 000000000..b0445fc68 --- /dev/null +++ b/platform/linux-generic/pktio/uapi_net_mdev.h @@ -0,0 +1,33 @@ +/* Copyright (c) 2018, Linaro Limited + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef _UAPI__LINUX_NET_MDEV_H +#define _UAPI__LINUX_NET_MDEV_H + +#include +#include + +enum net_mdev_types { + VFIO_NET_MDEV_SHADOW, + VFIO_NET_DESCRIPTORS, + VFIO_NET_MMIO, +}; + +enum net_mdev_subtypes { + VFIO_NET_MDEV_STATS, + VFIO_NET_MDEV_RX, + VFIO_NET_MDEV_TX, + VFIO_NET_MDEV_BARS, +}; + +enum vfio_net_mdev_regions { + VFIO_NET_MDEV_SHADOW_REGION_INDEX, + VFIO_NET_MDEV_RX_REGION_INDEX, + VFIO_NET_MDEV_TX_REGION_INDEX, + VFIO_NET_MDEV_NUM_REGIONS, +}; + +#endif /* _UAPI__LINUX_NET_MDEV_H */ From patchwork Thu Jan 4 16:00:09 2018 Content-Type: text/plain; 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Thu, 4 Jan 2018 16:00:18 +0000 (UTC) Received: from forward101o.mail.yandex.net (forward101o.mail.yandex.net [37.140.190.181]) by lists.linaro.org (Postfix) with ESMTPS id 6DE026096B for ; Thu, 4 Jan 2018 16:00:13 +0000 (UTC) Received: from mxback7j.mail.yandex.net (mxback7j.mail.yandex.net [IPv6:2a02:6b8:0:1619::110]) by forward101o.mail.yandex.net (Yandex) with ESMTP id 6C5B01343435 for ; Thu, 4 Jan 2018 19:00:12 +0300 (MSK) Received: from smtp4j.mail.yandex.net (smtp4j.mail.yandex.net [2a02:6b8:0:1619::15:6]) by mxback7j.mail.yandex.net (nwsmtp/Yandex) with ESMTP id qKBSZLfJpT-0CgeWput; Thu, 04 Jan 2018 19:00:12 +0300 Received: by smtp4j.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id sq4UyMZYf3-0B9itXVP; Thu, 04 Jan 2018 19:00:11 +0300 (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (Client certificate not present) From: Github ODP bot To: lng-odp@lists.linaro.org Date: Thu, 4 Jan 2018 19:00:09 +0300 Message-Id: <1515081609-11432-3-git-send-email-odpbot@yandex.ru> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1515081609-11432-1-git-send-email-odpbot@yandex.ru> References: <1515081609-11432-1-git-send-email-odpbot@yandex.ru> Github-pr-num: 380 Subject: [lng-odp] [PATCH CATERPILLAR v1 2/2] linux-gen: add i40e mediated device driver X-BeenThere: lng-odp@lists.linaro.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: "The OpenDataPlane \(ODP\) List" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" From: Mykyta Iziumtsev Signed-off-by: Mykyta Iziumtsev --- /** Email created from pull request 380 (MykytaI:caterpillar_mdev_i40e) ** https://github.com/Linaro/odp/pull/380 ** Patch: https://github.com/Linaro/odp/pull/380.patch ** Base sha: 4d17f8ae64aba0e6f24877be30f86ae5880cef7e ** Merge commit sha: 14e74248a279211cdd7f8267140003e8a5cb6c33 **/ platform/linux-generic/Makefile.am | 1 + platform/linux-generic/pktio/mdev/i40e.c | 641 +++++++++++++++++++++++++++++++ platform/linux-generic/pktio/subsystem.c | 6 + 3 files changed, 648 insertions(+) create mode 100644 platform/linux-generic/pktio/mdev/i40e.c diff --git a/platform/linux-generic/Makefile.am b/platform/linux-generic/Makefile.am index 9a6a7cc15..85f902115 100644 --- a/platform/linux-generic/Makefile.am +++ b/platform/linux-generic/Makefile.am @@ -258,6 +258,7 @@ __LIB__libodp_linux_la_SOURCES = \ pktio/tap.c \ pktio/ring.c \ pktio/mdev.c \ + pktio/mdev/i40e.c \ pool/generic.c \ pool/subsystem.c \ odp_pkt_queue.c \ diff --git a/platform/linux-generic/pktio/mdev/i40e.c b/platform/linux-generic/pktio/mdev/i40e.c new file mode 100644 index 000000000..5797e9a5e --- /dev/null +++ b/platform/linux-generic/pktio/mdev/i40e.c @@ -0,0 +1,641 @@ +/* Copyright (c) 2018, Linaro Limited + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include "config.h" + +#ifdef ODP_MDEV + +#include + +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +#include + +#include + +#include +#include +#include +#include +#include + +#define MODULE_NAME "i40e" + +#define I40E_TX_BUF_SIZE 2048U +#define I40E_RX_BUF_SIZE 2048U + +#define I40E_TX_PACKET_LEN_MIN 17 + +/* RX queue definitions */ +#define I40E_RX_QUEUE_NUM_MAX 32 + +/** RX descriptor */ +typedef struct { + odp_u64le_t addr; +#define I40E_RXD_QW1_LEN_S 38 +#define I40E_RXD_QW1_LEN_M (0x3FFFULL << I40E_RXD_QW1_LEN_S) + odp_u64le_t status_error_len; + odp_u64le_t reserved[2]; +} i40e_rx_desc_t; + +/** RX queue data */ +typedef struct { + i40e_rx_desc_t *rx_descs; /**< RX queue base */ + odp_u32le_t *doorbell; /**< RX queue doorbell */ + + uint16_t rx_queue_len; /**< Number of RX desc entries */ + uint16_t cidx; /**< Next RX desc to handle */ + + mdev_dma_area_t rx_data; /**< RX packet payload area */ + + odp_ticketlock_t lock; /**< RX queue lock */ +} i40e_rx_queue_t /* ODP_ALIGNED_CACHE */; + +/* TX queue definitions */ +#define I40E_TX_QUEUE_NUM_MAX 32 + +typedef struct { + odp_u64le_t addr; + +#define I40E_TXD_DTYPE_DATA 0UL + +#define I40E_TXD_CMD_EOP 0x0001UL +#define I40E_TXD_CMD_RS 0x0002UL +#define I40E_TXD_CMD_ICRC 0x0004UL + +#define I40E_TXD_QW1_CMD_S 4 +#define I40E_TXD_QW1_L2TAG1_S 48 +#define I40E_TXD_QW1_OFFSET_S 16 +#define I40E_TXD_QW1_LEN_S 34 + odp_u64le_t cmd_type_offset_len; +} i40e_tx_desc_t; + +/** TX queue data */ +typedef struct { + i40e_tx_desc_t *tx_descs; /**< TX queue base */ + odp_u32le_t *doorbell; /**< TX queue doorbell */ + + uint16_t tx_queue_len; /**< Number of TX desc entries */ + uint16_t pidx; /**< Next TX desc to insert */ + + odp_u32le_t *cidx; /**< Last TX desc processed by HW */ + + mdev_dma_area_t tx_data; /**< TX packet payload area */ + + odp_ticketlock_t lock; /**< TX queue lock */ +} i40e_tx_queue_t /* ODP_ALIGNED_CACHE */; + +/** Packet socket using mediated i40e device */ +typedef struct { + /** RX queue hot data */ + i40e_rx_queue_t rx_queues[I40E_RX_QUEUE_NUM_MAX]; + + /** TX queue hot data */ + i40e_tx_queue_t tx_queues[I40E_TX_QUEUE_NUM_MAX]; + + odp_pool_t pool; /**< pool to alloc packets from */ + + odp_bool_t lockless_rx; /**< no locking for RX */ + odp_bool_t lockless_tx; /**< no locking for TX */ + + odp_pktio_capability_t capa; /**< interface capabilities */ + + uint8_t *mmio; /**< MMIO region */ + + int sockfd; /**< control socket */ + + mdev_device_t mdev; /**< Common mdev data */ +} pktio_ops_i40e_data_t; + +static void i40e_rx_refill(i40e_rx_queue_t *rxq, uint16_t from, uint16_t num); +static void i40e_wait_link_up(pktio_entry_t *pktio_entry); +static int i40e_close(pktio_entry_t *pktio_entry); + +static int i40e_mmio_register(pktio_ops_i40e_data_t *pkt_i40e, + uint64_t offset, uint64_t size) +{ + ODP_ASSERT(pkt_i40e->mmio == NULL); + + pkt_i40e->mmio = mdev_region_mmap(&pkt_i40e->mdev, offset, size); + if (pkt_i40e->mmio == MAP_FAILED) { + ODP_ERR("Cannot mmap MMIO\n"); + return -1; + } + + ODP_DBG("Register MMIO region: 0x%llx@%016llx\n", size, offset); + + return 0; +} + +static int i40e_rx_queue_register(pktio_ops_i40e_data_t *pkt_i40e, + uint64_t offset, uint64_t size) +{ + uint16_t rxq_idx = pkt_i40e->capa.max_input_queues++; + i40e_rx_queue_t *rxq = &pkt_i40e->rx_queues[rxq_idx]; + uint64_t doorbell_offset; + struct ethtool_ringparam ering; + int ret; + + ODP_ASSERT(rxq_idx < ARRAY_SIZE(pkt_i40e->rx_queues)); + + odp_ticketlock_init(&rxq->lock); + + ret = ethtool_ringparam_get_fd(pkt_i40e->sockfd, + pkt_i40e->mdev.if_name, &ering); + if (ret) { + ODP_ERR("Cannot get queue length\n"); + return -1; + } + rxq->rx_queue_len = ering.rx_pending; + + ret = sysfs_attr_u64_get(&doorbell_offset, + "/sys/class/net/%s" + "/queues/rx-%u/i40e/doorbell_offset", + pkt_i40e->mdev.if_name, rxq_idx); + if (ret) { + ODP_ERR("Cannot get %s rx-%u doorbell_offset\n", + pkt_i40e->mdev.if_name, rxq_idx); + return -1; + } + rxq->doorbell = (odp_u32le_t *)(pkt_i40e->mmio + doorbell_offset); + + ODP_ASSERT(rxq->rx_queue_len * sizeof(*rxq->rx_descs) <= size); + + rxq->rx_descs = mdev_region_mmap(&pkt_i40e->mdev, offset, size); + if (rxq->rx_descs == MAP_FAILED) { + ODP_ERR("Cannot mmap RX queue\n"); + return -1; + } + + rxq->rx_data.size = rxq->rx_queue_len * I40E_RX_BUF_SIZE; + ret = mdev_dma_area_alloc(&pkt_i40e->mdev, &rxq->rx_data); + if (ret) { + ODP_ERR("Cannot allocate RX queue DMA area\n"); + return -1; + } + + /* Need 1 desc gap to keep tail from touching head */ + i40e_rx_refill(rxq, 0, rxq->rx_queue_len - 1); + + ODP_DBG("Register RX queue region: 0x%llx@%016llx\n", size, offset); + ODP_DBG(" RX descriptors: %u\n", rxq->rx_queue_len); + + return 0; +} + +static int i40e_tx_queue_register(pktio_ops_i40e_data_t *pkt_i40e, + uint64_t offset, uint64_t size) +{ + uint16_t txq_idx = pkt_i40e->capa.max_output_queues++; + i40e_tx_queue_t *txq = &pkt_i40e->tx_queues[txq_idx]; + uint64_t doorbell_offset; + struct ethtool_ringparam ering; + int ret; + + ODP_ASSERT(txq_idx < ARRAY_SIZE(pkt_i40e->tx_queues)); + + odp_ticketlock_init(&txq->lock); + + ret = ethtool_ringparam_get_fd(pkt_i40e->sockfd, + pkt_i40e->mdev.if_name, &ering); + if (ret) { + ODP_ERR("Cannot get queue length\n"); + return -1; + } + txq->tx_queue_len = ering.tx_pending; + + ret = sysfs_attr_u64_get(&doorbell_offset, + "/sys/class/net/%s" + "/queues/tx-%u/i40e/doorbell_offset", + pkt_i40e->mdev.if_name, txq_idx); + if (ret) { + ODP_ERR("Cannot get %s tx-%u doorbell_offset\n", + pkt_i40e->mdev.if_name, txq_idx); + return -1; + } + txq->doorbell = (odp_u32le_t *)(pkt_i40e->mmio + doorbell_offset); + + ODP_ASSERT(txq->tx_queue_len * sizeof(*txq->tx_descs) + + sizeof(*txq->cidx) <= size); + + txq->tx_descs = mdev_region_mmap(&pkt_i40e->mdev, offset, size); + if (txq->tx_descs == MAP_FAILED) { + ODP_ERR("Cannot mmap TX queue\n"); + return -1; + } + + txq->cidx = (odp_u32le_t *)(txq->tx_descs + txq->tx_queue_len); + + txq->tx_data.size = txq->tx_queue_len * I40E_TX_BUF_SIZE; + ret = mdev_dma_area_alloc(&pkt_i40e->mdev, &txq->tx_data); + if (ret) { + ODP_ERR("Cannot allocate TX queue DMA area\n"); + return -1; + } + + ODP_DBG("Register TX queue region: 0x%llx@%016llx\n", size, offset); + ODP_DBG(" TX descriptors: %u\n", txq->tx_queue_len); + + return 0; +} + +static int i40e_region_info_cb(mdev_device_t *mdev, + struct vfio_region_info *region_info) +{ + pktio_ops_i40e_data_t *pkt_i40e = + odp_container_of(mdev, pktio_ops_i40e_data_t, mdev); + mdev_region_class_t class_info; + + if (vfio_get_region_cap_type(region_info, &class_info) < 0) { + ODP_ERR("Cannot find class_info in region %u\n", + region_info->index); + return -1; + } + + switch (class_info.type) { + case VFIO_NET_MMIO: + return i40e_mmio_register(pkt_i40e, + region_info->offset, + region_info->size); + + case VFIO_NET_DESCRIPTORS: + if (class_info.subtype == VFIO_NET_MDEV_RX) + return i40e_rx_queue_register(pkt_i40e, + region_info->offset, + region_info->size); + if (class_info.subtype == VFIO_NET_MDEV_TX) + return i40e_tx_queue_register(pkt_i40e, + region_info->offset, + region_info->size); + /* fallthrough */ + + default: + ODP_ERR("Unexpected region %u (class %u:%u)\n", + region_info->index, class_info.type, + class_info.subtype); + return -1; + } +} + +static int i40e_open(odp_pktio_t id ODP_UNUSED, + pktio_entry_t *pktio_entry, + const char *resource, odp_pool_t pool) +{ + pktio_ops_i40e_data_t *pkt_i40e; + int ret; + + ODP_ASSERT(pool != ODP_POOL_INVALID); + + if (strncmp(resource, NET_MDEV_PREFIX, strlen(NET_MDEV_PREFIX))) + return -1; + + ODP_DBG("%s: probing resource %s\n", MODULE_NAME, resource); + + pkt_i40e = ODP_OPS_DATA_ALLOC(sizeof(*pkt_i40e)); + if (odp_unlikely(pkt_i40e == NULL)) { + ODP_ERR("Failed to allocate pktio_ops_i40e_data_t struct"); + return -1; + } + pktio_entry->s.ops_data = pkt_i40e; + + memset(pkt_i40e, 0, sizeof(*pkt_i40e)); + + pkt_i40e->sockfd = socket(AF_INET, SOCK_DGRAM, 0); + if (pkt_i40e->sockfd == -1) { + ODP_ERR("Cannot get device control socket\n"); + goto out; + } + + ret = + mdev_device_create(&pkt_i40e->mdev, MODULE_NAME, + resource + strlen(NET_MDEV_PREFIX), + i40e_region_info_cb); + if (ret) + goto out; + + pkt_i40e->pool = pool; + + i40e_wait_link_up(pktio_entry); + + ODP_DBG("%s: open %s is successful\n", MODULE_NAME, + pkt_i40e->mdev.if_name); + + return 0; + +out: + i40e_close(pktio_entry); + return -1; +} + +static int i40e_close(pktio_entry_t *pktio_entry) +{ + pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data; + + ODP_DBG("%s: close %s\n", MODULE_NAME, pkt_i40e->mdev.if_name); + + mdev_device_destroy(&pkt_i40e->mdev); + + for (uint16_t i = 0; i < pkt_i40e->capa.max_input_queues; i++) { + i40e_rx_queue_t *rxq = &pkt_i40e->rx_queues[i]; + + if (rxq->rx_data.size) + mdev_dma_area_free(&pkt_i40e->mdev, &rxq->rx_data); + } + + for (uint16_t i = 0; i < pkt_i40e->capa.max_output_queues; i++) { + i40e_tx_queue_t *txq = &pkt_i40e->tx_queues[i]; + + if (txq->tx_data.size) + mdev_dma_area_free(&pkt_i40e->mdev, &txq->tx_data); + } + + if (pkt_i40e->sockfd != -1) + close(pkt_i40e->sockfd); + + ODP_OPS_DATA_FREE(pkt_i40e); + + return 0; +} + +static void i40e_rx_refill(i40e_rx_queue_t *rxq, uint16_t from, uint16_t num) +{ + uint16_t i = from; + + while (num) { + uint64_t iova = rxq->rx_data.iova + i * I40E_RX_BUF_SIZE; + i40e_rx_desc_t *rxd = &rxq->rx_descs[i]; + + rxd->addr = odp_cpu_to_le_64(iova); + rxd->status_error_len = odp_cpu_to_le_64(0); + + i++; + if (i >= rxq->rx_queue_len) + i = 0; + + num--; + } + + /* Ring the doorbell */ + odpdrv_mmio_u32le_write(i, rxq->doorbell); +} + +static int i40e_recv(pktio_entry_t *pktio_entry, int rxq_idx, + odp_packet_t pkt_table[], int num) +{ + pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data; + i40e_rx_queue_t *rxq = &pkt_i40e->rx_queues[rxq_idx]; + uint16_t refill_from; + int rx_pkts = 0; + + if (!pkt_i40e->lockless_rx) + odp_ticketlock_lock(&rxq->lock); + + /* Keep track of the start point to refill RX queue */ + refill_from = rxq->cidx ? rxq->cidx - 1 : rxq->rx_queue_len - 1; + + while (rx_pkts < num) { + volatile i40e_rx_desc_t *rxd = &rxq->rx_descs[rxq->cidx]; + odp_packet_hdr_t *pkt_hdr; + odp_packet_t pkt; + uint16_t pkt_len; + uint64_t status_error_len; + int ret; + + status_error_len = odp_le_to_cpu_64(rxd->status_error_len); + if (!status_error_len) + break; + + pkt_len = (status_error_len & I40E_RXD_QW1_LEN_M) >> + I40E_RXD_QW1_LEN_S; + + pkt = odp_packet_alloc(pkt_i40e->pool, pkt_len); + if (odp_unlikely(pkt == ODP_PACKET_INVALID)) + break; + + pkt_hdr = odp_packet_hdr(pkt); + + ret = odp_packet_copy_from_mem(pkt, 0, pkt_len, + (uint8_t *)rxq->rx_data.vaddr + + rxq->cidx * I40E_RX_BUF_SIZE); + if (odp_unlikely(ret)) { + odp_packet_free(pkt); + break; + } + + pkt_hdr->input = pktio_entry->s.handle; + + rxq->cidx++; + if (odp_unlikely(rxq->cidx >= rxq->rx_queue_len)) + rxq->cidx = 0; + + pkt_table[rx_pkts] = pkt; + rx_pkts++; + } + + if (rx_pkts) + i40e_rx_refill(rxq, refill_from, rx_pkts); + + if (!pkt_i40e->lockless_rx) + odp_ticketlock_unlock(&rxq->lock); + + return rx_pkts; +} + +/** + * Helper function to build descriptor 2nd quad-word. + */ +static inline uint64_t txd_ctol(uint32_t cmd, uint32_t tag, uint32_t offset, + uint32_t len) +{ + return I40E_TXD_DTYPE_DATA | + ((uint64_t)cmd << I40E_TXD_QW1_CMD_S) | + ((uint64_t)tag << I40E_TXD_QW1_L2TAG1_S) | + ((uint64_t)offset << I40E_TXD_QW1_OFFSET_S) | + ((uint64_t)len << I40E_TXD_QW1_LEN_S); +} + +static int i40e_send(pktio_entry_t *pktio_entry, int txq_idx, + const odp_packet_t pkt_table[], int num) +{ + pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data; + i40e_tx_queue_t *txq = &pkt_i40e->tx_queues[txq_idx]; + uint16_t budget, tx_txds = 0; + int tx_pkts = 0; + + if (!pkt_i40e->lockless_tx) + odp_ticketlock_lock(&txq->lock); + + /* Determine how many packets will fit in TX queue */ + budget = txq->tx_queue_len - 1; + budget -= txq->pidx; + budget += odp_le_to_cpu_32(*txq->cidx); + budget &= txq->tx_queue_len - 1; + + while (tx_txds < budget && tx_pkts < num) { + uint16_t pkt_len = _odp_packet_len(pkt_table[tx_pkts]); + uint32_t offset = txq->pidx * I40E_TX_BUF_SIZE; + + i40e_tx_desc_t *txd = &txq->tx_descs[txq->pidx]; + + uint32_t txd_cmd = I40E_TXD_CMD_ICRC | I40E_TXD_CMD_EOP; + + /* Skip undersized packets silently */ + if (odp_unlikely(pkt_len < I40E_TX_PACKET_LEN_MIN)) { + tx_pkts++; + continue; + } + + /* Skip oversized packets silently */ + if (odp_unlikely(pkt_len > I40E_TX_BUF_SIZE)) { + tx_pkts++; + continue; + } + + /* Request CIDX update from firmware from time to time */ + if (!(txq->pidx & ((txq->tx_queue_len >> 2) - 1))) + txd_cmd |= I40E_TXD_CMD_RS; + + odp_packet_copy_to_mem(pkt_table[tx_pkts], 0, pkt_len, + (uint8_t *)txq->tx_data.vaddr + offset); + + txd->addr = odp_cpu_to_le_64(txq->tx_data.iova + offset); + txd->cmd_type_offset_len = + odp_cpu_to_le_64(txd_ctol(txd_cmd, 0, 0, pkt_len)); + + txq->pidx++; + if (odp_unlikely(txq->pidx >= txq->tx_queue_len)) + txq->pidx -= txq->tx_queue_len; + + tx_txds++; + tx_pkts++; + } + + /* Ring the doorbell */ + if (tx_pkts) + odpdrv_mmio_u32le_write(txq->pidx, txq->doorbell); + + if (!pkt_i40e->lockless_tx) + odp_ticketlock_unlock(&txq->lock); + + odp_packet_free_multi(pkt_table, tx_pkts); + + return tx_pkts; +} + +static int i40e_link_status(pktio_entry_t *pktio_entry) +{ + pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data; + + return link_status_fd(pkt_i40e->sockfd, pkt_i40e->mdev.if_name); +} + +static void i40e_wait_link_up(pktio_entry_t *pktio_entry) +{ + while (!i40e_link_status(pktio_entry)) + sleep(1); +} + +static int i40e_capability(pktio_entry_t *pktio_entry, + odp_pktio_capability_t *capa) +{ + pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data; + + *capa = pkt_i40e->capa; + return 0; +} + +static int i40e_input_queues_config(pktio_entry_t *pktio_entry, + const odp_pktin_queue_param_t *p) +{ + pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data; + + if (p->op_mode == ODP_PKTIO_OP_MT_UNSAFE) + pkt_i40e->lockless_rx = 1; + else + pkt_i40e->lockless_rx = 0; + + return 0; +} + +static int i40e_output_queues_config(pktio_entry_t *pktio_entry, + const odp_pktout_queue_param_t *p) +{ + pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data; + + if (p->op_mode == ODP_PKTIO_OP_MT_UNSAFE) + pkt_i40e->lockless_tx = 1; + else + pkt_i40e->lockless_tx = 0; + + return 0; +} + +static int i40e_mac_get(pktio_entry_t *pktio_entry, void *mac_addr) +{ + pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data; + + if (mac_addr_get_fd(pkt_i40e->sockfd, pkt_i40e->mdev.if_name, + mac_addr) < 0) + return -1; + + return ETH_ALEN; +} + +static int i40e_init_global(void) +{ + ODP_PRINT("PKTIO: initialized " MODULE_NAME " interface\n"); + return 0; +} + +static pktio_ops_module_t i40e_pktio_ops = { + .base = { + .name = MODULE_NAME, + .init_global = i40e_init_global, + }, + + .open = i40e_open, + .close = i40e_close, + + .recv = i40e_recv, + .send = i40e_send, + + .link_status = i40e_link_status, + + .capability = i40e_capability, + + .mac_get = i40e_mac_get, + + .input_queues_config = i40e_input_queues_config, + .output_queues_config = i40e_output_queues_config, +}; + +/** i40e module entry point */ +ODP_MODULE_CONSTRUCTOR(netmap_pktio_ops) +{ + odp_module_constructor(&i40e_pktio_ops); + + odp_subsystem_register_module(pktio_ops, &i40e_pktio_ops); +} + +/* + * Temporary variable to enable link this module, + * will remove in Makefile scheme changes. + */ +int enable_link_i40e_pktio_ops; + +#endif /* ODP_MDEV */ diff --git a/platform/linux-generic/pktio/subsystem.c b/platform/linux-generic/pktio/subsystem.c index a3b36c144..d6d6c39d0 100644 --- a/platform/linux-generic/pktio/subsystem.c +++ b/platform/linux-generic/pktio/subsystem.c @@ -44,6 +44,9 @@ extern int enable_link_socket_mmap_pktio_ops; #ifdef ODP_PKTIO_TAP extern int enable_link_tap_pktio_ops; #endif +#ifdef ODP_MDEV +extern int enable_link_i40e_pktio_ops; +#endif ODP_SUBSYSTEM_CONSTRUCTOR(pktio_ops) { @@ -73,4 +76,7 @@ ODP_SUBSYSTEM_CONSTRUCTOR(pktio_ops) #ifdef ODP_PKTIO_TAP enable_link_tap_pktio_ops = 1; #endif +#ifdef ODP_MDEV + enable_link_i40e_pktio_ops = 1; +#endif }