Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/patches/27123/?format=api
{ "id": 27123, "url": "http://patches.dpdk.org/api/patches/27123/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/20170724084004.25542-6-santosh.shukla@caviumnetworks.com/", "project": { "id": 1, "url": "http://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20170724084004.25542-6-santosh.shukla@caviumnetworks.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20170724084004.25542-6-santosh.shukla@caviumnetworks.com", "date": "2017-07-24T08:39:57", "name": "[dpdk-dev,v5,05/12] linuxapp/eal_pci: get iommu class", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "afb419a39992032d8a0ac5e80fb86f3e2449ef3b", "submitter": { "id": 480, "url": "http://patches.dpdk.org/api/people/480/?format=api", "name": "Santosh Shukla", "email": "santosh.shukla@caviumnetworks.com" }, "delegate": null, "mbox": "http://patches.dpdk.org/project/dpdk/patch/20170724084004.25542-6-santosh.shukla@caviumnetworks.com/mbox/", "series": [], "comments": "http://patches.dpdk.org/api/patches/27123/comments/", "check": "success", "checks": "http://patches.dpdk.org/api/patches/27123/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [IPv6:::1])\n\tby dpdk.org (Postfix) with ESMTP id 37F0D7CBF;\n\tMon, 24 Jul 2017 10:42:28 +0200 (CEST)", "from NAM02-SN1-obe.outbound.protection.outlook.com\n\t(mail-sn1nam02on0063.outbound.protection.outlook.com [104.47.36.63])\n\tby dpdk.org (Postfix) with ESMTP id 46B417CBD\n\tfor <dev@dpdk.org>; Mon, 24 Jul 2017 10:42:26 +0200 (CEST)", "from localhost.localdomain (223.180.24.9) by\n\tDM5PR07MB3097.namprd07.prod.outlook.com (10.172.85.7) with Microsoft\n\tSMTP Server (version=TLS1_2,\n\tcipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id\n\t15.1.1282.10; Mon, 24 Jul 2017 08:42:21 +0000" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=CAVIUMNETWORKS.onmicrosoft.com; s=selector1-cavium-com;\n\th=From:Date:Subject:Message-ID:Content-Type:MIME-Version;\n\tbh=0mIwC0LQYmxKWU4r2K7f5vTw/Mmu8yyIc+OWuxRbU/g=;\n\tb=j7ckgTt1Oe0GFYLgVeEifkg5T/okGPAsxAnnz0laDtwnQPfSjXD6LgYxkVo1TLi+BFpqJfnFjCtuIxzXTwfRpRmXrtO2TMweOWfvf49R2qdm5lNz58Q0LUR1HftMYJ6l1mXuDUEKPM3nfcyQtLkXr38Jqp/ZunF/wNJQ55fV/iI=", "Authentication-Results": "spf=none (sender IP is )\n\tsmtp.mailfrom=Santosh.Shukla@cavium.com; ", "From": "Santosh Shukla <santosh.shukla@caviumnetworks.com>", "To": "thomas@monjalon.net,\n\tdev@dpdk.org", "Cc": "hemant.agrawal@nxp.com, bruce.richardson@intel.com,\n\tjerin.jacob@caviumnetworks.com, shreyansh.jain@nxp.com,\n\tgaetan.rivet@6wind.com, sergio.gonzalez.monroy@intel.com,\n\tanatoly.burakov@intel.com, stephen@networkplumber.org,\n\tmaxime.coquelin@redhat.com, olivier.matz@6wind.com,\n\tSantosh Shukla <santosh.shukla@caviumnetworks.com>", "Date": "Mon, 24 Jul 2017 14:09:57 +0530", "Message-Id": "<20170724084004.25542-6-santosh.shukla@caviumnetworks.com>", "X-Mailer": "git-send-email 2.11.0", "In-Reply-To": "<20170724084004.25542-1-santosh.shukla@caviumnetworks.com>", "References": "<20170718055950.10208-1-santosh.shukla@caviumnetworks.com>\n\t<20170724084004.25542-1-santosh.shukla@caviumnetworks.com>", "MIME-Version": "1.0", "Content-Type": "text/plain", "X-Originating-IP": "[223.180.24.9]", "X-ClientProxiedBy": "SG2PR06CA0085.apcprd06.prod.outlook.com (10.170.138.11) To\n\tDM5PR07MB3097.namprd07.prod.outlook.com (10.172.85.7)", "X-MS-PublicTrafficType": "Email", "X-MS-Office365-Filtering-Correlation-Id": "0def7dd1-3edc-422f-cab8-08d4d26fe8fb", "X-Microsoft-Antispam": "UriScan:; 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SFP:1101; SCL:1; SRVR:DM5PR07MB3097; H:localhost.localdomain;\n\tFPR:; \n\tSPF:None; PTR:InfoNoRecords; MX:1; A:1; LANG:en; ", "Received-SPF": "None (protection.outlook.com: cavium.com does not designate\n\tpermitted sender hosts)", "SpamDiagnosticOutput": "1:99", "SpamDiagnosticMetadata": "NSPM", "X-OriginatorOrg": "caviumnetworks.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "24 Jul 2017 08:42:21.2281\n\t(UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "DM5PR07MB3097", "Subject": "[dpdk-dev] [PATCH v5 05/12] linuxapp/eal_pci: get iommu class", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<http://dpdk.org/ml/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://dpdk.org/ml/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<http://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "Get iommu class of PCI device on the bus and returns preferred iova\nmapping mode for that bus.\n\nAlgorithm for iova scheme selection for PCI bus:\n0. If no device bound then return with RTE_IOVA_DC mapping mode,\nelse goto 1).\n1. Look for device attached to vfio kdrv and has .drv_flag set\nto RTE_PCI_DRV_IOVA_AS_VA.\n2. Look for any device attached to UIO class of driver.\n3. Check for vfio-noiommu mode enabled.\n\nIf 2) & 3) is false and 1) is true then select\nmapping scheme as RTE_IOVA_VA. Otherwise use default\nmapping scheme (RTE_IOVA_PA).\n\nSigned-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>\nSigned-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>\nReviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>\nAcked-by: Hemant Agrawal <hemant.agrawal@nxp.com>\n---\nv3 --> v4 :\n- Reworded WARNING message (suggested by Maxime)\n- Added pci_device_is_bound func to check for no device case\n (suggested by Hemant).\n- Added ifdef vfio_present.\n\nv1 --> v2:\n- Removed Linux version check in vfio_noiommu func. Refer [1].\n - Extending autodetction logic for _iommu_class.\n Refer [2].\n\n[1] https://www.mail-archive.com/dev@dpdk.org/msg70108.html\n[2] https://www.mail-archive.com/dev@dpdk.org/msg70279.html\n\n lib/librte_eal/linuxapp/eal/eal_pci.c | 95 +++++++++++++++++++++++++\n lib/librte_eal/linuxapp/eal/eal_vfio.c | 19 +++++\n lib/librte_eal/linuxapp/eal/eal_vfio.h | 4 ++\n lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 +\n 4 files changed, 119 insertions(+)", "diff": "diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c\nindex 2041d5f34..81d980817 100644\n--- a/lib/librte_eal/linuxapp/eal/eal_pci.c\n+++ b/lib/librte_eal/linuxapp/eal/eal_pci.c\n@@ -45,6 +45,7 @@\n #include \"eal_filesystem.h\"\n #include \"eal_private.h\"\n #include \"eal_pci_init.h\"\n+#include \"eal_vfio.h\"\n \n /**\n * @file\n@@ -483,6 +484,100 @@ rte_pci_scan(void)\n \treturn -1;\n }\n \n+/*\n+ * Is pci device bound to any kdrv\n+ */\n+static inline int\n+pci_device_is_bound(void)\n+{\n+\tstruct rte_pci_device *dev = NULL;\n+\tint ret = 0;\n+\n+\tFOREACH_DEVICE_ON_PCIBUS(dev) {\n+\t\tif (dev->kdrv == RTE_KDRV_UNKNOWN ||\n+\t\t dev->kdrv == RTE_KDRV_NONE) {\n+\t\t\tcontinue;\n+\t\t} else {\n+\t\t\tret = 1;\n+\t\t\tbreak;\n+\t\t}\n+\t}\n+\treturn ret;\n+}\n+\n+/*\n+ * Any one of the device bound to uio\n+ */\n+static inline int\n+pci_device_bound_uio(void)\n+{\n+\tstruct rte_pci_device *dev = NULL;\n+\n+\tFOREACH_DEVICE_ON_PCIBUS(dev) {\n+\t\tif (dev->kdrv == RTE_KDRV_IGB_UIO ||\n+\t\t dev->kdrv == RTE_KDRV_UIO_GENERIC) {\n+\t\t\treturn 1;\n+\t\t}\n+\t}\n+\treturn 0;\n+}\n+\n+/*\n+ * Any one of the device has iova as va\n+ */\n+static inline int\n+pci_device_has_iova_va(void)\n+{\n+\tstruct rte_pci_device *dev = NULL;\n+\tstruct rte_pci_driver *drv = NULL;\n+\n+\tFOREACH_DRIVER_ON_PCIBUS(drv) {\n+\t\tif (drv && drv->drv_flags & RTE_PCI_DRV_IOVA_AS_VA) {\n+\t\t\tFOREACH_DEVICE_ON_PCIBUS(dev) {\n+\t\t\t\tif (dev->kdrv == RTE_KDRV_VFIO &&\n+\t\t\t\t rte_pci_match(drv, dev))\n+\t\t\t\t\treturn 1;\n+\t\t\t}\n+\t\t}\n+\t}\n+\treturn 0;\n+}\n+\n+/*\n+ * Get iommu class of PCI devices on the bus.\n+ */\n+enum rte_iova_mode\n+rte_pci_get_iommu_class(void)\n+{\n+\tbool is_bound;\n+\tbool is_vfio_noiommu_enabled = true;\n+\tbool has_iova_va;\n+\tbool is_bound_uio;\n+\n+\tis_bound = pci_device_is_bound();\n+\tif (!is_bound)\n+\t\treturn RTE_IOVA_DC;\n+\n+\thas_iova_va = pci_device_has_iova_va();\n+\tis_bound_uio = pci_device_bound_uio();\n+#ifdef VFIO_PRESENT\n+\tis_vfio_noiommu_enabled = vfio_noiommu_is_enabled() == 1 ? 1 : 0;\n+#endif\n+\n+\tif (has_iova_va && !is_bound_uio && !is_vfio_noiommu_enabled)\n+\t\treturn RTE_IOVA_VA;\n+\n+\tif (has_iova_va) {\n+\t\tRTE_LOG(WARNING, EAL, \"Some devices want iova as va but pa will be used because.. \");\n+\t\tif (is_vfio_noiommu_enabled)\n+\t\t\tRTE_LOG(WARNING, EAL, \"vfio-noiommu mode configured\\n\");\n+\t\tif (is_bound_uio)\n+\t\t\tRTE_LOG(WARNING, EAL, \"few device bound to UIO\\n\");\n+\t}\n+\n+\treturn RTE_IOVA_PA;\n+}\n+\n /* Read PCI config space. */\n int rte_pci_read_config(const struct rte_pci_device *device,\n \t\tvoid *buf, size_t len, off_t offset)\ndiff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.c b/lib/librte_eal/linuxapp/eal/eal_vfio.c\nindex 946df7e31..c8a97b7e7 100644\n--- a/lib/librte_eal/linuxapp/eal/eal_vfio.c\n+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.c\n@@ -816,4 +816,23 @@ vfio_noiommu_dma_map(int __rte_unused vfio_container_fd)\n \treturn 0;\n }\n \n+int\n+vfio_noiommu_is_enabled(void)\n+{\n+\tint fd, ret, cnt __rte_unused;\n+\tchar c;\n+\n+\tret = -1;\n+\tfd = open(VFIO_NOIOMMU_MODE, O_RDONLY);\n+\tif (fd < 0)\n+\t\treturn -1;\n+\n+\tcnt = read(fd, &c, 1);\n+\tif (c == 'Y')\n+\t\tret = 1;\n+\n+\tclose(fd);\n+\treturn ret;\n+}\n+\n #endif\ndiff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.h b/lib/librte_eal/linuxapp/eal/eal_vfio.h\nindex 5ff63e5d7..26ea8e119 100644\n--- a/lib/librte_eal/linuxapp/eal/eal_vfio.h\n+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.h\n@@ -150,6 +150,8 @@ struct vfio_config {\n #define VFIO_NOIOMMU_GROUP_FMT \"/dev/vfio/noiommu-%u\"\n #define VFIO_GET_REGION_ADDR(x) ((uint64_t) x << 40ULL)\n #define VFIO_GET_REGION_IDX(x) (x >> 40)\n+#define VFIO_NOIOMMU_MODE \\\n+\t\"/sys/module/vfio/parameters/enable_unsafe_noiommu_mode\"\n \n /* DMA mapping function prototype.\n * Takes VFIO container fd as a parameter.\n@@ -210,6 +212,8 @@ int pci_vfio_is_enabled(void);\n \n int vfio_mp_sync_setup(void);\n \n+int vfio_noiommu_is_enabled(void);\n+\n #define SOCKET_REQ_CONTAINER 0x100\n #define SOCKET_REQ_GROUP 0x200\n #define SOCKET_CLR_GROUP 0x300\ndiff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map\nindex 7d7fff496..bf68f02bc 100644\n--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map\n+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map\n@@ -246,5 +246,6 @@ DPDK_17.11 {\n \tglobal:\n \n \trte_pci_match;\n+\trte_pci_get_iommu_class;\n \n } DPDK_17.08;\n", "prefixes": [ "dpdk-dev", "v5", "05/12" ] }