From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f44.google.com (mail-pg0-f44.google.com [74.125.83.44]) by dpdk.org (Postfix) with ESMTP id A873F2946 for ; Sat, 7 Jan 2017 19:18:13 +0100 (CET) Received: by mail-pg0-f44.google.com with SMTP id 194so1158306pgd.2 for ; Sat, 07 Jan 2017 10:18:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=q4taIFV3xMGXzdt/WquTeQTJFZZtarAmF3MpdXLvDqQ=; b=orY3uPUWxEMsWw4tJW3/8pB0OMjIpWn/UTR16+GZxfJzfyVMyugsR6MzVa+UYi1Pah 0WR71BNgpKJ04VdvoGR3AE8h1hkW6L3VcnwUfu4WxeS0glWBylGpBToZwTftJy5uageJ BULO6PTs9IvQtn7OCYVDt5k4GbRG8Dmd2OpC3BLixMcXpg4GUzihz258grH6uE3JSmSI yXIkxYppGoji9i3yMwqz9F6VXXdOd4idowoTAYp7LyZYL5PBlmBBWPuRh4KJ+e47k1bE EolQ7Z/EVziUL2AAABA0R5+RuLIXLGXsNXXeQG55Ifg+PHNirFK7YyTGMqoXxl2ASUs7 UnAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=q4taIFV3xMGXzdt/WquTeQTJFZZtarAmF3MpdXLvDqQ=; b=qe0Wtjy2gYAYSkDjEzNgT7qhgzJugb6YVWtK1zK5TW2a5s/P80ckfc5lZcjRrPE8eD CxhD6rQBfRKhq07A4sVFKdhhgHsNe3Fs/fRz7y6fhDaXI8EcNV9qb4Am4vKc+63WVeOp V7EUDVuttjd/RRfZ7CsRNzBTCPwYq6AHF8KLZADQvnpOuIF7eCHX3IQRV9jSxID0FWoH wLGsUpmEz4+R91NH1qQ2sP7BCYnX7kPGWaqxZpgva2AuddhXFmxkuDeuKHpC3lmL2wfC ivbc84yiX5/o5rbqiLogRMnBorL2fQULIj/4FSJW3WpIQsV5Z4Y7AqVYsOrJqtE5dsLA lB2Q== X-Gm-Message-State: AIkVDXKvmXtujT0hjCSSmBA00ujHOADle7eMc0FEzqqx6jCiw3tKKZhab6MOjG0/kgrCxw== X-Received: by 10.84.149.139 with SMTP id m11mr179486942pla.38.1483813092136; Sat, 07 Jan 2017 10:18:12 -0800 (PST) Received: from xeon-e3.wavecable.com (204-195-18-65.wavecable.com. [204.195.18.65]) by smtp.gmail.com with ESMTPSA id q190sm127565181pfb.51.2017.01.07.10.18.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 07 Jan 2017 10:18:11 -0800 (PST) From: Stephen Hemminger X-Google-Original-From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger Date: Sat, 7 Jan 2017 10:17:56 -0800 Message-Id: <20170107181756.1944-9-sthemmin@microsoft.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170107181756.1944-1-sthemmin@microsoft.com> References: <20170107181756.1944-1-sthemmin@microsoft.com> Subject: [dpdk-dev] [PATCH 8/8] eal: VMBUS infrastructure X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 Jan 2017 18:18:14 -0000 Add support for VMBUS on Hyper-V/Azure. VMBUS is similar to PCI but has different addressing and internal API's. Signed-off-by: Stephen Hemminger --- lib/librte_eal/common/Makefile | 2 +- lib/librte_eal/common/eal_common_devargs.c | 7 + lib/librte_eal/common/eal_common_options.c | 38 ++ lib/librte_eal/common/eal_internal_cfg.h | 1 + lib/librte_eal/common/eal_options.h | 6 + lib/librte_eal/common/eal_private.h | 5 + lib/librte_eal/common/include/rte_devargs.h | 8 + lib/librte_eal/common/include/rte_vmbus.h | 249 ++++++++ lib/librte_eal/linuxapp/eal/Makefile | 6 + lib/librte_eal/linuxapp/eal/eal.c | 13 + lib/librte_eal/linuxapp/eal/eal_vmbus.c | 911 ++++++++++++++++++++++++++++ lib/librte_ether/rte_ethdev.c | 90 +++ lib/librte_ether/rte_ethdev.h | 31 + mk/rte.app.mk | 1 + 14 files changed, 1367 insertions(+), 1 deletion(-) create mode 100644 lib/librte_eal/common/include/rte_vmbus.h create mode 100644 lib/librte_eal/linuxapp/eal/eal_vmbus.c diff --git a/lib/librte_eal/common/Makefile b/lib/librte_eal/common/Makefile index 09a3d3af..ceb77bed 100644 --- a/lib/librte_eal/common/Makefile +++ b/lib/librte_eal/common/Makefile @@ -33,7 +33,7 @@ include $(RTE_SDK)/mk/rte.vars.mk INC := rte_branch_prediction.h rte_common.h INC += rte_debug.h rte_eal.h rte_errno.h rte_launch.h rte_lcore.h -INC += rte_log.h rte_memory.h rte_memzone.h rte_pci.h +INC += rte_log.h rte_memory.h rte_memzone.h rte_pci.h rte_vmbus.h INC += rte_per_lcore.h rte_random.h INC += rte_tailq.h rte_interrupts.h rte_alarm.h INC += rte_string_fns.h rte_version.h diff --git a/lib/librte_eal/common/eal_common_devargs.c b/lib/librte_eal/common/eal_common_devargs.c index e403717b..934ca840 100644 --- a/lib/librte_eal/common/eal_common_devargs.c +++ b/lib/librte_eal/common/eal_common_devargs.c @@ -113,6 +113,13 @@ rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str) goto fail; break; + case RTE_DEVTYPE_WHITELISTED_VMBUS: + case RTE_DEVTYPE_BLACKLISTED_VMBUS: +#ifdef RTE_LIBRTE_HV_PMD + if (uuid_parse(buf, devargs->uuid) == 0) + break; +#endif + goto fail; } free(buf); diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c index f36bc556..1a2b418c 100644 --- a/lib/librte_eal/common/eal_common_options.c +++ b/lib/librte_eal/common/eal_common_options.c @@ -95,6 +95,11 @@ eal_long_options[] = { {OPT_VFIO_INTR, 1, NULL, OPT_VFIO_INTR_NUM }, {OPT_VMWARE_TSC_MAP, 0, NULL, OPT_VMWARE_TSC_MAP_NUM }, {OPT_XEN_DOM0, 0, NULL, OPT_XEN_DOM0_NUM }, +#ifdef RTE_LIBRTE_HV_PMD + {OPT_NO_VMBUS, 0, NULL, OPT_NO_VMBUS_NUM }, + {OPT_VMBUS_BLACKLIST, 1, NULL, OPT_VMBUS_BLACKLIST_NUM }, + {OPT_VMBUS_WHITELIST, 1, NULL, OPT_VMBUS_WHITELIST_NUM }, +#endif {0, 0, NULL, 0 } }; @@ -858,6 +863,21 @@ eal_parse_common_option(int opt, const char *optarg, conf->no_pci = 1; break; +#ifdef RTE_LIBRTE_HV_PMD + case OPT_NO_VMBUS_NUM: + conf->no_vmbus = 1; + break; + case OPT_VMBUS_BLACKLIST_NUM: + if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_VMBUS, + optarg) < 0) + return -1; + break; + case OPT_VMBUS_WHITELIST_NUM: + if (rte_eal_devargs_add(RTE_DEVTYPE_WHITELISTED_VMBUS, + optarg) < 0) + return -1; + break; +#endif case OPT_NO_HPET_NUM: conf->no_hpet = 1; break; @@ -1017,6 +1037,14 @@ eal_check_common_options(struct internal_config *internal_cfg) return -1; } +#ifdef RTE_LIBRTE_HV_PMD + if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_VMBUS) != 0 && + rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_VMBUS) != 0) { + RTE_LOG(ERR, EAL, "Options vmbus blacklist and whitelist " + "cannot be used at the same time\n"); + return -1; + } +#endif return 0; } @@ -1066,5 +1094,15 @@ eal_common_usage(void) " --"OPT_NO_PCI" Disable PCI\n" " --"OPT_NO_HPET" Disable HPET\n" " --"OPT_NO_SHCONF" No shared config (mmap'd files)\n" +#ifdef RTE_LIBRTE_HV_PMD + " --"OPT_NO_VMBUS" Disable VMBUS\n" + " --"OPT_VMBUS_BLACKLIST" Add a VMBUS device to black list.\n" + " Prevent EAL from using this PCI device. The argument\n" + " format is device UUID.\n" + " --"OPT_VMBUS_WHITELIST" Add a VMBUS device to white list.\n" + " Only use the specified VMBUS devices. The argument format\n" + " is device UUID This option can be present\n" + " several times (once per device).\n" +#endif "\n", RTE_MAX_LCORE); } diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h index 5f1367eb..4b6af937 100644 --- a/lib/librte_eal/common/eal_internal_cfg.h +++ b/lib/librte_eal/common/eal_internal_cfg.h @@ -67,6 +67,7 @@ struct internal_config { unsigned hugepage_unlink; /**< true to unlink backing files */ volatile unsigned xen_dom0_support; /**< support app running on Xen Dom0*/ volatile unsigned no_pci; /**< true to disable PCI */ + volatile unsigned no_vmbus; /**< true to disable VMBUS */ volatile unsigned no_hpet; /**< true to disable HPET */ volatile unsigned vmware_tsc_map; /**< true to use VMware TSC mapping * instead of native TSC */ diff --git a/lib/librte_eal/common/eal_options.h b/lib/librte_eal/common/eal_options.h index a881c62e..156727e7 100644 --- a/lib/librte_eal/common/eal_options.h +++ b/lib/librte_eal/common/eal_options.h @@ -83,6 +83,12 @@ enum { OPT_VMWARE_TSC_MAP_NUM, #define OPT_XEN_DOM0 "xen-dom0" OPT_XEN_DOM0_NUM, +#define OPT_NO_VMBUS "no-vmbus" + OPT_NO_VMBUS_NUM, +#define OPT_VMBUS_BLACKLIST "vmbus-blacklist" + OPT_VMBUS_BLACKLIST_NUM, +#define OPT_VMBUS_WHITELIST "vmbus-whitelist" + OPT_VMBUS_WHITELIST_NUM, OPT_LONG_MAX_NUM }; diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h index 9e7d8f6b..c856c63e 100644 --- a/lib/librte_eal/common/eal_private.h +++ b/lib/librte_eal/common/eal_private.h @@ -210,6 +210,11 @@ int pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx, struct mapped_pci_resource *uio_res, int map_idx); /** + * VMBUS related functions and structures + */ +int rte_eal_vmbus_init(void); + +/** * Init tail queues for non-EAL library structures. This is to allow * the rings, mempools, etc. lists to be shared among multiple processes * diff --git a/lib/librte_eal/common/include/rte_devargs.h b/lib/librte_eal/common/include/rte_devargs.h index 88120a1c..c079d289 100644 --- a/lib/librte_eal/common/include/rte_devargs.h +++ b/lib/librte_eal/common/include/rte_devargs.h @@ -51,6 +51,9 @@ extern "C" { #include #include #include +#ifdef RTE_LIBRTE_HV_PMD +#include +#endif /** * Type of generic device @@ -59,6 +62,8 @@ enum rte_devtype { RTE_DEVTYPE_WHITELISTED_PCI, RTE_DEVTYPE_BLACKLISTED_PCI, RTE_DEVTYPE_VIRTUAL, + RTE_DEVTYPE_WHITELISTED_VMBUS, + RTE_DEVTYPE_BLACKLISTED_VMBUS, }; /** @@ -88,6 +93,9 @@ struct rte_devargs { /** Driver name. */ char drv_name[32]; } virt; +#ifdef RTE_LIBRTE_HV_PMD + uuid_t uuid; +#endif }; /** Arguments string as given by user or "" for no argument. */ char *args; diff --git a/lib/librte_eal/common/include/rte_vmbus.h b/lib/librte_eal/common/include/rte_vmbus.h new file mode 100644 index 00000000..f96d753e --- /dev/null +++ b/lib/librte_eal/common/include/rte_vmbus.h @@ -0,0 +1,249 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2013-2016 Brocade Communications Systems, Inc. + * Copyright(c) 2016 Microsoft Corporation + * 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 _RTE_VMBUS_H_ +#define _RTE_VMBUS_H_ + +/** + * @file + * + * RTE VMBUS Interface + */ +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +TAILQ_HEAD(vmbus_device_list, rte_vmbus_device); +TAILQ_HEAD(vmbus_driver_list, rte_vmbus_driver); + +extern struct vmbus_driver_list vmbus_driver_list; +extern struct vmbus_device_list vmbus_device_list; + +/** Pathname of VMBUS devices directory. */ +#define SYSFS_VMBUS_DEVICES "/sys/bus/vmbus/devices" + +#define UUID_BUF_SZ (36 + 1) + + +/** Maximum number of VMBUS resources. */ +#define VMBUS_MAX_RESOURCE 7 + +/** + * A structure describing a VMBUS device. + */ +struct rte_vmbus_device { + TAILQ_ENTRY(rte_vmbus_device) next; /**< Next probed VMBUS device. */ + struct rte_device device; /**< Inherit core device */ + uuid_t device_id; /**< VMBUS device id */ + uuid_t class_id; /**< VMBUS device type */ + uint32_t relid; /**< VMBUS id for notification */ + uint8_t monitor_id; + struct rte_intr_handle intr_handle; /**< Interrupt handle */ + const struct rte_vmbus_driver *driver; /**< Associated driver */ + + struct rte_mem_resource mem_resource[VMBUS_MAX_RESOURCE]; + /**< VMBUS Memory Resource */ + char sysfs_name[]; /**< Name in sysfs bus directory */ +}; + +struct rte_vmbus_driver; + +/** + * Initialisation function for the driver called during VMBUS probing. + */ +typedef int (vmbus_probe_t)(struct rte_vmbus_driver *, + struct rte_vmbus_device *); + +/** + * Uninitialisation function for the driver called during hotplugging. + */ +typedef int (vmbus_remove_t)(struct rte_vmbus_device *); + +/** + * A structure describing a VMBUS driver. + */ +struct rte_vmbus_driver { + TAILQ_ENTRY(rte_vmbus_driver) next; /**< Next in list. */ + struct rte_driver driver; + vmbus_probe_t *probe; /**< Device Probe function. */ + vmbus_remove_t *remove; /**< Device Remove function. */ + + const uuid_t *id_table; /**< ID table. */ +}; + +struct vmbus_map { + void *addr; + char *path; + uint64_t offset; + uint64_t size; + uint64_t phaddr; +}; + +/* + * For multi-process we need to reproduce all vmbus mappings in secondary + * processes, so save them in a tailq. + */ +struct mapped_vmbus_resource { + TAILQ_ENTRY(mapped_vmbus_resource) next; + + uuid_t uuid; + char path[PATH_MAX]; + int nb_maps; + struct vmbus_map maps[VMBUS_MAX_RESOURCE]; +}; + +TAILQ_HEAD(mapped_vmbus_res_list, mapped_vmbus_resource); + +/** + * Scan the content of the VMBUS bus, and the devices in the devices list + * + * @return + * 0 on success, negative on error + */ +int rte_eal_vmbus_scan(void); + +/** + * Probe the VMBUS bus for registered drivers. + * + * Scan the content of the VMBUS bus, and call the probe() function for + * all registered drivers that have a matching entry in its id_table + * for discovered devices. + * + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_eal_vmbus_probe(void); + +/** + * Map the VMBUS device resources in user space virtual memory address + * + * @param dev + * A pointer to a rte_vmbus_device structure describing the device + * to use + * + * @return + * 0 on success, negative on error and positive if no driver + * is found for the device. + */ +int rte_eal_vmbus_map_device(struct rte_vmbus_device *dev); + +/** + * Unmap this device + * + * @param dev + * A pointer to a rte_vmbus_device structure describing the device + * to use + */ +void rte_eal_vmbus_unmap_device(struct rte_vmbus_device *dev); + +/** + * Probe the single VMBUS device. + * + * Scan the content of the VMBUS bus, and find the vmbus device + * specified by device uuid, then call the probe() function for + * registered driver that has a matching entry in its id_table for + * discovered device. + * + * @param id + * The VMBUS device uuid. + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_eal_vmbus_probe_one(uuid_t id); + +/** + * Close the single VMBUS device. + * + * Scan the content of the VMBUS bus, and find the vmbus device id, + * then call the remove() function for registered driver that has a + * matching entry in its id_table for discovered device. + * + * @param id + * The VMBUS device uuid. + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_eal_vmbus_detach(uuid_t id); + +/** + * Register a VMBUS driver. + * + * @param driver + * A pointer to a rte_vmbus_driver structure describing the driver + * to be registered. + */ +void rte_eal_vmbus_register(struct rte_vmbus_driver *driver); + +/** Helper for VMBUS device registration from driver nstance */ +#define RTE_PMD_REGISTER_VMBUS(nm, vmbus_drv) \ +RTE_INIT(vmbusinitfn_ ##nm); \ +static void vmbusinitfn_ ##nm(void) \ +{\ + (vmbus_drv).driver.name = RTE_STR(nm);\ + (vmbus_drv).driver.type = PMD_VMBUS; \ + rte_eal_vmbus_register(&vmbus_drv); \ +} \ +RTE_PMD_EXPORT_NAME(nm, __COUNTER__) + +/** + * Unregister a VMBUS driver. + * + * @param driver + * A pointer to a rte_vmbus_driver structure describing the driver + * to be unregistered. + */ +void rte_eal_vmbus_unregister(struct rte_vmbus_driver *driver); + +#ifdef __cplusplus +} +#endif + +#endif /* _RTE_VMBUS_H_ */ diff --git a/lib/librte_eal/linuxapp/eal/Makefile b/lib/librte_eal/linuxapp/eal/Makefile index 4e206f09..f6ca3848 100644 --- a/lib/librte_eal/linuxapp/eal/Makefile +++ b/lib/librte_eal/linuxapp/eal/Makefile @@ -71,6 +71,11 @@ SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_timer.c SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_interrupts.c SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_alarm.c +ifeq ($(CONFIG_RTE_LIBRTE_HV_PMD),y) +SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_vmbus.c +LDLIBS += -luuid +endif + # from common dir SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_lcore.c SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_timer.c @@ -114,6 +119,7 @@ CFLAGS_eal_hugepage_info.o := -D_GNU_SOURCE CFLAGS_eal_pci.o := -D_GNU_SOURCE CFLAGS_eal_pci_uio.o := -D_GNU_SOURCE CFLAGS_eal_pci_vfio.o := -D_GNU_SOURCE +CFLAGS_eal_vmbux.o := -D_GNU_SOURCE CFLAGS_eal_common_whitelist.o := -D_GNU_SOURCE CFLAGS_eal_common_options.o := -D_GNU_SOURCE CFLAGS_eal_common_thread.o := -D_GNU_SOURCE diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c index 16dd5b9c..1bc0814a 100644 --- a/lib/librte_eal/linuxapp/eal/eal.c +++ b/lib/librte_eal/linuxapp/eal/eal.c @@ -70,6 +70,9 @@ #include #include #include +#ifdef RTE_LIBRTE_HV_PMD +#include +#endif #include #include #include @@ -830,6 +833,11 @@ rte_eal_init(int argc, char **argv) eal_check_mem_on_local_socket(); +#ifdef RTE_LIBRTE_HV_PMD + if (rte_eal_vmbus_init() < 0) + RTE_LOG(ERR, EAL, "Cannot init VMBUS\n"); +#endif + if (eal_plugins_init() < 0) rte_panic("Cannot init plugins\n"); @@ -884,6 +892,11 @@ rte_eal_init(int argc, char **argv) if (rte_eal_pci_probe()) rte_panic("Cannot probe PCI\n"); +#ifdef RTE_LIBRTE_HV_PMD + if (rte_eal_vmbus_probe() < 0) + rte_panic("Cannot probe VMBUS\n"); +#endif + if (rte_eal_dev_init() < 0) rte_panic("Cannot init pmd devices\n"); diff --git a/lib/librte_eal/linuxapp/eal/eal_vmbus.c b/lib/librte_eal/linuxapp/eal/eal_vmbus.c new file mode 100644 index 00000000..729f93a9 --- /dev/null +++ b/lib/librte_eal/linuxapp/eal/eal_vmbus.c @@ -0,0 +1,911 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2013-2016 Brocade Communications Systems, Inc. + * Copyright(c) 2016 Microsoft Corporation + * 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 "eal_private.h" +#include "eal_pci_init.h" +#include "eal_filesystem.h" + +struct vmbus_driver_list vmbus_driver_list = + TAILQ_HEAD_INITIALIZER(vmbus_driver_list); +struct vmbus_device_list vmbus_device_list = + TAILQ_HEAD_INITIALIZER(vmbus_device_list); + +static void *vmbus_map_addr; + +static struct rte_tailq_elem rte_vmbus_uio_tailq = { + .name = "UIO_RESOURCE_LIST", +}; +EAL_REGISTER_TAILQ(rte_vmbus_uio_tailq); + +/* + * parse a sysfs file containing one integer value + * different to the eal version, as it needs to work with 64-bit values + */ +static int +vmbus_get_sysfs_uuid(const char *filename, uuid_t uu) +{ + char buf[BUFSIZ]; + char *cp, *in = buf; + FILE *f; + + f = fopen(filename, "r"); + if (f == NULL) { + RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n", + __func__, filename); + return -1; + } + + if (fgets(buf, sizeof(buf), f) == NULL) { + RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n", + __func__, filename); + fclose(f); + return -1; + } + fclose(f); + + cp = strchr(buf, '\n'); + if (cp) + *cp = '\0'; + + /* strip { } notation */ + if (buf[0] == '{') { + in = buf + 1; + cp = strchr(in, '}'); + if (cp) + *cp = '\0'; + } + + if (uuid_parse(in, uu) < 0) { + RTE_LOG(ERR, EAL, "%s %s not a valid UUID\n", + filename, buf); + return -1; + } + + return 0; +} + +/* map a particular resource from a file */ +static void * +vmbus_map_resource(void *requested_addr, int fd, off_t offset, size_t size, + int flags) +{ + void *mapaddr; + + /* Map the memory resource of device */ + mapaddr = mmap(requested_addr, size, PROT_READ | PROT_WRITE, + MAP_SHARED | flags, fd, offset); + if (mapaddr == MAP_FAILED || + (requested_addr != NULL && mapaddr != requested_addr)) { + RTE_LOG(ERR, EAL, + "%s(): cannot mmap(%d, %p, 0x%lx, 0x%lx): %s)\n", + __func__, fd, requested_addr, + (unsigned long)size, (unsigned long)offset, + strerror(errno)); + } else + RTE_LOG(DEBUG, EAL, " VMBUS memory mapped at %p\n", mapaddr); + + return mapaddr; +} + +/* unmap a particular resource */ +static void +vmbus_unmap_resource(void *requested_addr, size_t size) +{ + if (requested_addr == NULL) + return; + + /* Unmap the VMBUS memory resource of device */ + if (munmap(requested_addr, size)) { + RTE_LOG(ERR, EAL, "%s(): cannot munmap(%p, 0x%lx): %s\n", + __func__, requested_addr, (unsigned long)size, + strerror(errno)); + } else + RTE_LOG(DEBUG, EAL, " VMBUS memory unmapped at %p\n", + requested_addr); +} + +/* Only supports current kernel version + * Unlike PCI there is no option (or need) to create UIO device. + */ +static int vmbus_get_uio_dev(const char *name, + char *dstbuf, size_t buflen) +{ + char dirname[PATH_MAX]; + unsigned int uio_num; + struct dirent *e; + DIR *dir; + + snprintf(dirname, sizeof(dirname), + "/sys/bus/vmbus/devices/%s/uio", name); + + dir = opendir(dirname); + if (dir == NULL) { + RTE_LOG(ERR, EAL, "Cannot map uio resources for %s: %s\n", + name, strerror(errno)); + return -1; + } + + /* take the first file starting with "uio" */ + while ((e = readdir(dir)) != NULL) { + if (sscanf(e->d_name, "uio%u", &uio_num) != 1) + continue; + + snprintf(dstbuf, buflen, "%s/uio%u", dirname, uio_num); + break; + } + closedir(dir); + + return e ? (int) uio_num : -1; +} + +/* + * parse a sysfs file containing one integer value + * different to the eal version, as it needs to work with 64-bit values + */ +static int +vmbus_parse_sysfs_value(const char *dir, const char *name, + uint64_t *val) +{ + char filename[PATH_MAX]; + FILE *f; + char buf[BUFSIZ]; + char *end = NULL; + + snprintf(filename, sizeof(filename), "%s/%s", dir, name); + f = fopen(filename, "r"); + if (f == NULL) { + RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n", + __func__, filename); + return -1; + } + + if (fgets(buf, sizeof(buf), f) == NULL) { + RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n", + __func__, filename); + fclose(f); + return -1; + } + fclose(f); + + *val = strtoull(buf, &end, 0); + if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) { + RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n", + __func__, filename); + return -1; + } + return 0; +} + +/* Get mappings out of values provided by uio */ +static int +vmbus_uio_get_mappings(const char *uioname, + struct vmbus_map maps[]) +{ + int i; + + for (i = 0; i != VMBUS_MAX_RESOURCE; i++) { + struct vmbus_map *map = &maps[i]; + char dirname[PATH_MAX]; + + /* check if map directory exists */ + snprintf(dirname, sizeof(dirname), + "%s/maps/map%d", uioname, i); + + if (access(dirname, F_OK) != 0) + break; + + /* get mapping offset */ + if (vmbus_parse_sysfs_value(dirname, "offset", + &map->offset) < 0) + return -1; + + /* get mapping size */ + if (vmbus_parse_sysfs_value(dirname, "size", + &map->size) < 0) + return -1; + + /* get mapping physical address */ + if (vmbus_parse_sysfs_value(dirname, "addr", + &maps->phaddr) < 0) + return -1; + } + + return i; +} + +static void +vmbus_uio_free_resource(struct rte_vmbus_device *dev, + struct mapped_vmbus_resource *uio_res) +{ + rte_free(uio_res); + + if (dev->intr_handle.fd) { + close(dev->intr_handle.fd); + dev->intr_handle.fd = -1; + dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; + } +} + +static struct mapped_vmbus_resource * +vmbus_uio_alloc_resource(struct rte_vmbus_device *dev) +{ + struct mapped_vmbus_resource *uio_res; + char dirname[PATH_MAX], devname[PATH_MAX]; + int uio_num, nb_maps; + + uio_num = vmbus_get_uio_dev(dev->sysfs_name, dirname, sizeof(dirname)); + if (uio_num < 0) { + RTE_LOG(WARNING, EAL, + " %s not managed by UIO driver, skipping\n", + dev->sysfs_name); + return NULL; + } + + /* allocate the mapping details for secondary processes*/ + uio_res = rte_zmalloc("UIO_RES", sizeof(*uio_res), 0); + if (uio_res == NULL) { + RTE_LOG(ERR, EAL, + "%s(): cannot store uio mmap details\n", __func__); + goto error; + } + + snprintf(devname, sizeof(devname), "/dev/uio%u", uio_num); + dev->intr_handle.fd = open(devname, O_RDWR); + if (dev->intr_handle.fd < 0) { + RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", + devname, strerror(errno)); + goto error; + } + + dev->intr_handle.type = RTE_INTR_HANDLE_UIO_INTX; + + snprintf(uio_res->path, sizeof(uio_res->path), "%s", devname); + uuid_copy(uio_res->uuid, dev->device_id); + + nb_maps = vmbus_uio_get_mappings(dirname, uio_res->maps); + if (nb_maps < 0) + goto error; + + RTE_LOG(DEBUG, EAL, "Found %d memory maps for device %s\n", + nb_maps, dev->sysfs_name); + + return uio_res; + + error: + vmbus_uio_free_resource(dev, uio_res); + return NULL; +} + +static int +vmbus_uio_map_resource_by_index(struct rte_vmbus_device *dev, + unsigned int res_idx, + struct mapped_vmbus_resource *uio_res, + unsigned int map_idx) +{ + struct vmbus_map *maps = uio_res->maps; + char devname[PATH_MAX]; + void *mapaddr; + int fd; + + snprintf(devname, sizeof(devname), + "/sys/bus/vmbus/%s/resource%u", dev->sysfs_name, res_idx); + + fd = open(devname, O_RDWR); + if (fd < 0) { + RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", + devname, strerror(errno)); + return -1; + } + + /* allocate memory to keep path */ + maps[map_idx].path = rte_malloc(NULL, strlen(devname) + 1, 0); + if (maps[map_idx].path == NULL) { + RTE_LOG(ERR, EAL, "Cannot allocate memory for path: %s\n", + strerror(errno)); + return -1; + } + + /* try mapping somewhere close to the end of hugepages */ + if (vmbus_map_addr == NULL) + vmbus_map_addr = pci_find_max_end_va(); + + mapaddr = vmbus_map_resource(vmbus_map_addr, fd, 0, + dev->mem_resource[res_idx].len, 0); + close(fd); + if (mapaddr == MAP_FAILED) { + rte_free(maps[map_idx].path); + return -1; + } + + vmbus_map_addr = RTE_PTR_ADD(mapaddr, + dev->mem_resource[res_idx].len); + + maps[map_idx].phaddr = dev->mem_resource[res_idx].phys_addr; + maps[map_idx].size = dev->mem_resource[res_idx].len; + maps[map_idx].addr = mapaddr; + maps[map_idx].offset = 0; + strcpy(maps[map_idx].path, devname); + dev->mem_resource[res_idx].addr = mapaddr; + + return 0; +} + +static void +vmbus_uio_unmap(struct mapped_vmbus_resource *uio_res) +{ + int i; + + if (uio_res == NULL) + return; + + for (i = 0; i != uio_res->nb_maps; i++) { + vmbus_unmap_resource(uio_res->maps[i].addr, + uio_res->maps[i].size); + + if (rte_eal_process_type() == RTE_PROC_PRIMARY) + rte_free(uio_res->maps[i].path); + } +} + +static struct mapped_vmbus_resource * +vmbus_uio_find_resource(struct rte_vmbus_device *dev) +{ + struct mapped_vmbus_resource *uio_res; + struct mapped_vmbus_res_list *uio_res_list = + RTE_TAILQ_CAST(rte_vmbus_uio_tailq.head, + mapped_vmbus_res_list); + + if (dev == NULL) + return NULL; + + TAILQ_FOREACH(uio_res, uio_res_list, next) { + if (uuid_compare(uio_res->uuid, dev->device_id) == 0) + return uio_res; + } + return NULL; +} + +/* unmap the VMBUS resource of a VMBUS device in virtual memory */ +static void +vmbus_uio_unmap_resource(struct rte_vmbus_device *dev) +{ + struct mapped_vmbus_resource *uio_res; + struct mapped_vmbus_res_list *uio_res_list = + RTE_TAILQ_CAST(rte_vmbus_uio_tailq.head, + mapped_vmbus_res_list); + + if (dev == NULL) + return; + + /* find an entry for the device */ + uio_res = vmbus_uio_find_resource(dev); + if (uio_res == NULL) + return; + + /* secondary processes - just free maps */ + if (rte_eal_process_type() != RTE_PROC_PRIMARY) + return vmbus_uio_unmap(uio_res); + + TAILQ_REMOVE(uio_res_list, uio_res, next); + + /* unmap all resources */ + vmbus_uio_unmap(uio_res); + + /* free uio resource */ + rte_free(uio_res); + + /* close fd if in primary process */ + close(dev->intr_handle.fd); + if (dev->intr_handle.uio_cfg_fd >= 0) { + close(dev->intr_handle.uio_cfg_fd); + dev->intr_handle.uio_cfg_fd = -1; + } + + dev->intr_handle.fd = -1; + dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; +} + +static int +vmbus_uio_map_secondary(struct rte_vmbus_device *dev) +{ + struct mapped_vmbus_resource *uio_res; + struct mapped_vmbus_res_list *uio_res_list = + RTE_TAILQ_CAST(rte_vmbus_uio_tailq.head, + mapped_vmbus_res_list); + + TAILQ_FOREACH(uio_res, uio_res_list, next) { + int i; + + /* skip this element if it doesn't match our id */ + if (uuid_compare(uio_res->uuid, dev->device_id)) + continue; + + for (i = 0; i != uio_res->nb_maps; i++) { + void *mapaddr; + int fd; + + fd = open(uio_res->maps[i].path, O_RDWR); + if (fd < 0) { + RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", + uio_res->maps[i].path, strerror(errno)); + return -1; + } + + mapaddr = vmbus_map_resource(uio_res->maps[i].addr, fd, + uio_res->maps[i].offset, + uio_res->maps[i].size, 0); + /* fd is not needed in slave process, close it */ + close(fd); + + if (mapaddr == uio_res->maps[i].addr) + continue; + + RTE_LOG(ERR, EAL, + "Cannot mmap device resource file %s to address: %p\n", + uio_res->maps[i].path, + uio_res->maps[i].addr); + + /* unmap addrs correctly mapped */ + while (i != 0) { + --i; + vmbus_unmap_resource(uio_res->maps[i].addr, + uio_res->maps[i].size); + } + return -1; + + } + return 0; + } + + RTE_LOG(ERR, EAL, "Cannot find resource for device\n"); + return 1; +} + +/* map the resources of a vmbus device in virtual memory */ +int +rte_eal_vmbus_map_device(struct rte_vmbus_device *dev) +{ + struct mapped_vmbus_resource *uio_res; + struct mapped_vmbus_res_list *uio_res_list = + RTE_TAILQ_CAST(rte_vmbus_uio_tailq.head, mapped_vmbus_res_list); + int i, ret, map_idx = 0; + + dev->intr_handle.fd = -1; + dev->intr_handle.uio_cfg_fd = -1; + dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; + + /* secondary processes - use already recorded details */ + if (rte_eal_process_type() != RTE_PROC_PRIMARY) + return vmbus_uio_map_secondary(dev); + + /* allocate uio resource */ + uio_res = vmbus_uio_alloc_resource(dev); + if (uio_res == NULL) + return -1; + + /* Map all BARs */ + for (i = 0; i != VMBUS_MAX_RESOURCE; i++) { + uint64_t phaddr; + + /* skip empty BAR */ + phaddr = dev->mem_resource[i].phys_addr; + if (phaddr == 0) + continue; + + ret = vmbus_uio_map_resource_by_index(dev, i, + uio_res, map_idx); + if (ret) + goto error; + + map_idx++; + } + + uio_res->nb_maps = map_idx; + + TAILQ_INSERT_TAIL(uio_res_list, uio_res, next); + + return 0; +error: + for (i = 0; i < map_idx; i++) { + vmbus_unmap_resource(uio_res->maps[i].addr, + uio_res->maps[i].size); + rte_free(uio_res->maps[i].path); + } + vmbus_uio_free_resource(dev, uio_res); + return -1; +} + +/* Scan one vmbus sysfs entry, and fill the devices list from it. */ +static int +vmbus_scan_one(const char *name) +{ + struct rte_vmbus_device *dev, *dev2; + char filename[PATH_MAX]; + char dirname[PATH_MAX]; + unsigned long tmp; + + dev = malloc(sizeof(*dev) + strlen(name) + 1); + if (dev == NULL) + return -1; + + memset(dev, 0, sizeof(*dev)); + strcpy(dev->sysfs_name, name); + if (dev->sysfs_name == NULL) + goto error; + + /* sysfs base directory + * /sys/bus/vmbus/devices/7a08391f-f5a0-4ac0-9802-d13fd964f8df + * or on older kernel + * /sys/bus/vmbus/devices/vmbus_1 + */ + snprintf(dirname, sizeof(dirname), "%s/%s", + SYSFS_VMBUS_DEVICES, name); + + /* get device id */ + snprintf(filename, sizeof(filename), "%s/device_id", dirname); + if (vmbus_get_sysfs_uuid(filename, dev->device_id) < 0) + goto error; + + /* get device class */ + snprintf(filename, sizeof(filename), "%s/class_id", dirname); + if (vmbus_get_sysfs_uuid(filename, dev->class_id) < 0) + goto error; + + /* get relid */ + snprintf(filename, sizeof(filename), "%s/id", dirname); + if (eal_parse_sysfs_value(filename, &tmp) < 0) + goto error; + dev->relid = tmp; + + /* get monitor id */ + snprintf(filename, sizeof(filename), "%s/monitor_id", dirname); + if (eal_parse_sysfs_value(filename, &tmp) < 0) + goto error; + dev->monitor_id = tmp; + + /* get numa node */ + snprintf(filename, sizeof(filename), "%s/numa_node", + dirname); + if (eal_parse_sysfs_value(filename, &tmp) < 0) + /* if no NUMA support, set default to 0 */ + dev->device.numa_node = 0; + else + dev->device.numa_node = tmp; + + /* device is valid, add in list (sorted) */ + RTE_LOG(DEBUG, EAL, "Adding vmbus device %s\n", name); + + TAILQ_FOREACH(dev2, &vmbus_device_list, next) { + int ret; + + ret = uuid_compare(dev->device_id, dev->device_id); + if (ret > 0) + continue; + + if (ret < 0) { + TAILQ_INSERT_BEFORE(dev2, dev, next); + rte_eal_device_insert(&dev->device); + } else { /* already registered */ + memmove(dev2->mem_resource, dev->mem_resource, + sizeof(dev->mem_resource)); + free(dev); + } + return 0; + } + + rte_eal_device_insert(&dev->device); + TAILQ_INSERT_TAIL(&vmbus_device_list, dev, next); + + return 0; +error: + free(dev); + return -1; +} + +/* + * Scan the content of the vmbus, and the devices in the devices list + */ +static int +vmbus_scan(void) +{ + struct dirent *e; + DIR *dir; + + dir = opendir(SYSFS_VMBUS_DEVICES); + if (dir == NULL) { + if (errno == ENOENT) + return 0; + + RTE_LOG(ERR, EAL, "%s(): opendir failed: %s\n", + __func__, strerror(errno)); + return -1; + } + + while ((e = readdir(dir)) != NULL) { + if (e->d_name[0] == '.') + continue; + + if (vmbus_scan_one(e->d_name) < 0) + goto error; + } + closedir(dir); + return 0; + +error: + closedir(dir); + return -1; +} + +/* Init the VMBUS EAL subsystem */ +int rte_eal_vmbus_init(void) +{ + /* VMBUS can be disabled */ + if (internal_config.no_vmbus) + return 0; + + if (vmbus_scan() < 0) { + RTE_LOG(ERR, EAL, "%s(): Cannot scan vmbus\n", __func__); + return -1; + } + return 0; +} + +/* Below is PROBE part of eal_vmbus library */ + +/* + * If device ID match, call the devinit() function of the driver. + */ +static int +rte_eal_vmbus_probe_one_driver(struct rte_vmbus_driver *dr, + struct rte_vmbus_device *dev) +{ + const uuid_t *id_table; + + RTE_LOG(DEBUG, EAL, " probe driver: %s\n", dr->driver.name); + + for (id_table = dr->id_table; !uuid_is_null(*id_table); ++id_table) { + struct rte_devargs *args; + char guid[UUID_BUF_SZ]; + int ret; + + /* skip devices not assocaited with this device class */ + if (uuid_compare(*id_table, dev->class_id) != 0) + continue; + + uuid_unparse(dev->device_id, guid); + RTE_LOG(INFO, EAL, "VMBUS device %s on NUMA socket %i\n", + guid, dev->device.numa_node); + + /* no initialization when blacklisted, return without error */ + args = dev->device.devargs; + if (args && args->type == RTE_DEVTYPE_BLACKLISTED_VMBUS) { + RTE_LOG(INFO, EAL, " Device is blacklisted, not initializing\n"); + return 1; + } + + RTE_LOG(INFO, EAL, " probe driver: %s\n", dr->driver.name); + + /* map resources for device */ + ret = rte_eal_vmbus_map_device(dev); + if (ret != 0) + return ret; + + /* reference driver structure */ + dev->driver = dr; + + /* call the driver probe() function */ + ret = dr->probe(dr, dev); + if (ret) + dev->driver = NULL; + + return ret; + } + + /* return positive value if driver doesn't support this device */ + return 1; +} + + +/* + * If vendor/device ID match, call the remove() function of the + * driver. + */ +static int +vmbus_detach_dev(struct rte_vmbus_driver *dr, + struct rte_vmbus_device *dev) +{ + const uuid_t *id_table; + + for (id_table = dr->id_table; !uuid_is_null(*id_table); ++id_table) { + char guid[UUID_BUF_SZ]; + + /* skip devices not assocaited with this device class */ + if (uuid_compare(*id_table, dev->class_id) != 0) + continue; + + uuid_unparse(dev->device_id, guid); + RTE_LOG(INFO, EAL, "VMBUS device %s on NUMA socket %i\n", + guid, dev->device.numa_node); + + RTE_LOG(DEBUG, EAL, " remove driver: %s\n", dr->driver.name); + + if (dr->remove && (dr->remove(dev) < 0)) + return -1; /* negative value is an error */ + + /* clear driver structure */ + dev->driver = NULL; + + vmbus_uio_unmap_resource(dev); + return 0; + } + + /* return positive value if driver doesn't support this device */ + return 1; +} + +/* + * call the devinit() function of all + * registered drivers for the vmbus device. Return -1 if no driver is + * found for this class of vmbus device. + * The present assumption is that we have drivers only for vmbus network + * devices. That's why we don't check driver's id_table now. + */ +static int +vmbus_probe_all_drivers(struct rte_vmbus_device *dev) +{ + struct rte_vmbus_driver *dr = NULL; + int ret; + + TAILQ_FOREACH(dr, &vmbus_driver_list, next) { + ret = rte_eal_vmbus_probe_one_driver(dr, dev); + if (ret < 0) { + /* negative value is an error */ + RTE_LOG(ERR, EAL, "Failed to probe driver %s\n", + dr->driver.name); + return -1; + } + /* positive value means driver doesn't support it */ + if (ret > 0) + continue; + + return 0; + } + + return 1; +} + + +/* + * If device ID matches, call the remove() function of all + * registered driver for the given device. Return -1 if initialization + * failed, return 1 if no driver is found for this device. + */ +static int +vmbus_detach_all_drivers(struct rte_vmbus_device *dev) +{ + struct rte_vmbus_driver *dr; + int rc = 0; + + if (dev == NULL) + return -1; + + TAILQ_FOREACH(dr, &vmbus_driver_list, next) { + rc = vmbus_detach_dev(dr, dev); + if (rc < 0) + /* negative value is an error */ + return -1; + if (rc > 0) + /* positive value means driver doesn't support it */ + continue; + return 0; + } + return 1; +} + +/* Detach device specified by its VMBUS id */ +int +rte_eal_vmbus_detach(uuid_t device_id) +{ + struct rte_vmbus_device *dev; + char ubuf[UUID_BUF_SZ]; + + TAILQ_FOREACH(dev, &vmbus_device_list, next) { + if (uuid_compare(dev->device_id, device_id) != 0) + continue; + + if (vmbus_detach_all_drivers(dev) < 0) + goto err_return; + + TAILQ_REMOVE(&vmbus_device_list, dev, next); + free(dev); + return 0; + } + return -1; + +err_return: + uuid_unparse(device_id, ubuf); + RTE_LOG(WARNING, EAL, "Requested device %s cannot be used\n", + ubuf); + return -1; +} + +/* + * Scan the vmbus, and call the devinit() function for + * all registered drivers that have a matching entry in its id_table + * for discovered devices. + */ +int +rte_eal_vmbus_probe(void) +{ + struct rte_vmbus_device *dev = NULL; + + TAILQ_FOREACH(dev, &vmbus_device_list, next) { + char ubuf[UUID_BUF_SZ]; + + uuid_unparse(dev->device_id, ubuf); + + RTE_LOG(DEBUG, EAL, "Probing driver for device %s ...\n", + ubuf); + vmbus_probe_all_drivers(dev); + } + return 0; +} + +/* register vmbus driver */ +void +rte_eal_vmbus_register(struct rte_vmbus_driver *driver) +{ + TAILQ_INSERT_TAIL(&vmbus_driver_list, driver, next); +} + +/* unregister vmbus driver */ +void +rte_eal_vmbus_unregister(struct rte_vmbus_driver *driver) +{ + TAILQ_REMOVE(&vmbus_driver_list, driver, next); +} diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c index 7c212096..b69af0f0 100644 --- a/lib/librte_ether/rte_ethdev.c +++ b/lib/librte_ether/rte_ethdev.c @@ -3334,3 +3334,93 @@ rte_eth_dev_l2_tunnel_offload_set(uint8_t port_id, -ENOTSUP); return (*dev->dev_ops->l2_tunnel_offload_set)(dev, l2_tunnel, mask, en); } + + +#ifdef RTE_LIBRTE_HV_PMD +int +rte_eth_dev_vmbus_probe(struct rte_vmbus_driver *vmbus_drv, + struct rte_vmbus_device *vmbus_dev) +{ + struct eth_driver *eth_drv = (struct eth_driver *)vmbus_drv; + struct rte_eth_dev *eth_dev; + char ustr[UUID_BUF_SZ]; + int diag; + + uuid_unparse(vmbus_dev->device_id, ustr); + + eth_dev = rte_eth_dev_allocate(ustr); + if (eth_dev == NULL) + return -ENOMEM; + + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { + eth_dev->data->dev_private = rte_zmalloc("ethdev private structure", + eth_drv->dev_private_size, + RTE_CACHE_LINE_SIZE); + if (eth_dev->data->dev_private == NULL) + rte_panic("Cannot allocate memzone for private port data\n"); + } + + eth_dev->device = &vmbus_dev->device; + eth_dev->driver = eth_drv; + eth_dev->data->rx_mbuf_alloc_failed = 0; + + /* init user callbacks */ + TAILQ_INIT(&(eth_dev->link_intr_cbs)); + + /* + * Set the default maximum frame size. + */ + eth_dev->data->mtu = ETHER_MTU; + + /* Invoke PMD device initialization function */ + diag = (*eth_drv->eth_dev_init)(eth_dev); + if (diag == 0) + return 0; + + RTE_PMD_DEBUG_TRACE("driver %s: eth_dev_init(%s) failed\n", + vmbus_drv->driver.name, ustr); + + if (rte_eal_process_type() == RTE_PROC_PRIMARY) + rte_free(eth_dev->data->dev_private); + + return diag; +} + +int +rte_eth_dev_vmbus_remove(struct rte_vmbus_device *vmbus_dev) +{ + const struct eth_driver *eth_drv; + struct rte_eth_dev *eth_dev; + char ustr[UUID_BUF_SZ]; + int ret; + + if (vmbus_dev == NULL) + return -EINVAL; + + uuid_unparse(vmbus_dev->device_id, ustr); + eth_dev = rte_eth_dev_allocated(ustr); + if (eth_dev == NULL) + return -ENODEV; + + eth_drv = (const struct eth_driver *)vmbus_dev->driver; + + /* Invoke PMD device uninit function */ + if (*eth_drv->eth_dev_uninit) { + ret = (*eth_drv->eth_dev_uninit)(eth_dev); + if (ret) + return ret; + } + + /* free ether device */ + rte_eth_dev_release_port(eth_dev); + + if (rte_eal_process_type() == RTE_PROC_PRIMARY) + rte_free(eth_dev->data->dev_private); + + eth_dev->device = NULL; + eth_dev->driver = NULL; + eth_dev->data = NULL; + + return 0; +} +#endif diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h index 1a62a322..2a8c1eed 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -180,6 +180,9 @@ extern "C" { #include #include #include +#ifdef RTE_LIBRTE_HV_PMD +#include +#endif #include #include #include @@ -1908,6 +1911,17 @@ struct rte_pci_eth_driver { struct eth_driver eth_drv; /**< Ethernet driver. */ }; +#ifdef RTE_LIBRTE_HV_PMD +/** + * @internal + * The structure associated with a PMD VMBUS Ethernet driver. + */ +struct rte_vmbus_eth_driver { + struct rte_vmbus_driver vmbus_drv; /**< Underlying VMBUS driver. */ + struct eth_driver eth_drv; /**< Ethernet driver. */ +}; +#endif + /** * Convert a numerical speed in Mbps to a bitmap flag that can be used in * the bitmap link_speeds of the struct rte_eth_conf @@ -4543,6 +4557,23 @@ int rte_eth_dev_pci_probe(struct rte_pci_driver *pci_drv, */ int rte_eth_dev_pci_remove(struct rte_pci_device *pci_dev); +#ifdef RTE_LIBRTE_HV_PMD +/** + * @internal + * Wrapper for use by vmbus drivers as a .probe function to attach to a ethdev + * interface. + */ +int rte_eth_dev_vmbus_probe(struct rte_vmbus_driver *vmbus_drv, + struct rte_vmbus_device *vmbus_dev); + +/** + * @internal + * Wrapper for use by vmbus drivers as a .remove function to detach a ethdev + * interface. + */ +int rte_eth_dev_vmbus_remove(struct rte_vmbus_device *vmbus_dev); +#endif + #ifdef __cplusplus } #endif diff --git a/mk/rte.app.mk b/mk/rte.app.mk index f75f0e24..6b304084 100644 --- a/mk/rte.app.mk +++ b/mk/rte.app.mk @@ -130,6 +130,7 @@ ifeq ($(CONFIG_RTE_LIBRTE_VHOST),y) _LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_VHOST) += -lrte_pmd_vhost endif # $(CONFIG_RTE_LIBRTE_VHOST) _LDLIBS-$(CONFIG_RTE_LIBRTE_VMXNET3_PMD) += -lrte_pmd_vmxnet3_uio +_LDLIBS-$(CONFIG_RTE_LIBRTE_HV_PMD) += -luuid ifeq ($(CONFIG_RTE_LIBRTE_CRYPTODEV),y) _LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_AESNI_MB) += -lrte_pmd_aesni_mb -- 2.11.0