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{
    "id": 12135,
    "url": "http://patches.dpdk.org/api/patches/12135/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/patch/1461152657-19969-14-git-send-email-david.marchand@6wind.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": "<1461152657-19969-14-git-send-email-david.marchand@6wind.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/1461152657-19969-14-git-send-email-david.marchand@6wind.com",
    "date": "2016-04-20T11:44:13",
    "name": "[dpdk-dev,v2,13/17] pci: add a helper to update a device",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "e6db09891f49ade86efac9fcd981908a21dc4787",
    "submitter": {
        "id": 3,
        "url": "http://patches.dpdk.org/api/people/3/?format=api",
        "name": "David Marchand",
        "email": "david.marchand@6wind.com"
    },
    "delegate": {
        "id": 1,
        "url": "http://patches.dpdk.org/api/users/1/?format=api",
        "username": "tmonjalo",
        "first_name": "Thomas",
        "last_name": "Monjalon",
        "email": "thomas@monjalon.net"
    },
    "mbox": "http://patches.dpdk.org/project/dpdk/patch/1461152657-19969-14-git-send-email-david.marchand@6wind.com/mbox/",
    "series": [],
    "comments": "http://patches.dpdk.org/api/patches/12135/comments/",
    "check": "pending",
    "checks": "http://patches.dpdk.org/api/patches/12135/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@dpdk.org",
        "Delivered-To": "patchwork@dpdk.org",
        "Received": [
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        ],
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        "X-Received": "by 10.194.21.65 with SMTP id t1mr8353974wje.12.1461152676247;\n\tWed, 20 Apr 2016 04:44:36 -0700 (PDT)",
        "From": "David Marchand <david.marchand@6wind.com>",
        "To": "dev@dpdk.org",
        "Cc": "thomas.monjalon@6wind.com,\n\tviktorin@rehivetech.com",
        "Date": "Wed, 20 Apr 2016 13:44:13 +0200",
        "Message-Id": "<1461152657-19969-14-git-send-email-david.marchand@6wind.com>",
        "X-Mailer": "git-send-email 1.9.1",
        "In-Reply-To": "<1461152657-19969-1-git-send-email-david.marchand@6wind.com>",
        "References": "<1454076516-21591-1-git-send-email-david.marchand@6wind.com>\n\t<1461152657-19969-1-git-send-email-david.marchand@6wind.com>",
        "Subject": "[dpdk-dev] [PATCH v2 13/17] pci: add a helper to update a device",
        "X-BeenThere": "dev@dpdk.org",
        "X-Mailman-Version": "2.1.15",
        "Precedence": "list",
        "List-Id": "patches and discussions about DPDK <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": "This helper updates a pci device object with latest information it can\nfind.\nIt will be used mainly for hotplug code.\n\nSigned-off-by: David Marchand <david.marchand@6wind.com>\n---\n lib/librte_eal/bsdapp/eal/eal_pci.c   | 49 +++++++++++++++++++++++++++++++++++\n lib/librte_eal/common/eal_private.h   | 13 ++++++++++\n lib/librte_eal/linuxapp/eal/eal_pci.c | 13 ++++++++++\n 3 files changed, 75 insertions(+)",
    "diff": "diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c\nindex cd8e8d3..85e49f6 100644\n--- a/lib/librte_eal/bsdapp/eal/eal_pci.c\n+++ b/lib/librte_eal/bsdapp/eal/eal_pci.c\n@@ -401,6 +401,55 @@ error:\n \treturn -1;\n }\n \n+int\n+pci_update_device(const struct rte_pci_addr *addr)\n+{\n+\tint fd;\n+\tstruct pci_conf matches[2];\n+\tstruct pci_match_conf match = {\n+\t\t.pc_sel = {\n+\t\t\t.pc_domain = addr->domain,\n+\t\t\t.pc_bus = addr->bus,\n+\t\t\t.pc_dev = addr->devid,\n+\t\t\t.pc_func = addr->function,\n+\t\t},\n+\t};\n+\tstruct pci_conf_io conf_io = {\n+\t\t.pat_buf_len = 0,\n+\t\t.num_patterns = 1,\n+\t\t.patterns = &match,\n+\t\t.match_buf_len = sizeof(matches),\n+\t\t.matches = &matches[0],\n+\t};\n+\n+\tfd = open(\"/dev/pci\", O_RDONLY);\n+\tif (fd < 0) {\n+\t\tRTE_LOG(ERR, EAL, \"%s(): error opening /dev/pci\\n\", __func__);\n+\t\tgoto error;\n+\t}\n+\n+\tif (ioctl(fd, PCIOCGETCONF, &conf_io) < 0) {\n+\t\tRTE_LOG(ERR, EAL, \"%s(): error with ioctl on /dev/pci: %s\\n\",\n+\t\t\t\t__func__, strerror(errno));\n+\t\tgoto error;\n+\t}\n+\n+\tif (conf_io.num_matches != 1)\n+\t\tgoto error;\n+\n+\tif (pci_scan_one(fd, &matches[0]) < 0)\n+\t\tgoto error;\n+\n+\tclose(fd);\n+\n+\treturn 0;\n+\n+error:\n+\tif (fd >= 0)\n+\t\tclose(fd);\n+\treturn -1;\n+}\n+\n /* Read PCI config space. */\n int rte_eal_pci_read_config(const struct rte_pci_device *dev,\n \t\t\t    void *buf, size_t len, off_t offset)\ndiff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h\nindex 855fd25..81816a6 100644\n--- a/lib/librte_eal/common/eal_private.h\n+++ b/lib/librte_eal/common/eal_private.h\n@@ -155,6 +155,19 @@ struct rte_pci_driver;\n struct rte_pci_device;\n \n /**\n+ * Update a pci device object by asking the kernel for the latest information.\n+ *\n+ * This function is private to EAL.\n+ *\n+ * @param addr\n+ *\tThe PCI Bus-Device-Function address to look for\n+ * @return\n+ *   - 0 on success.\n+ *   - negative on error.\n+ */\n+int pci_update_device(const struct rte_pci_addr *addr);\n+\n+/**\n  * Unbind kernel driver for this device\n  *\n  * This function is private to EAL.\ndiff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c\nindex 3fc82b0..61ac21f 100644\n--- a/lib/librte_eal/linuxapp/eal/eal_pci.c\n+++ b/lib/librte_eal/linuxapp/eal/eal_pci.c\n@@ -393,6 +393,19 @@ pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,\n \treturn 0;\n }\n \n+int\n+pci_update_device(const struct rte_pci_addr *addr)\n+{\n+\tchar filename[PATH_MAX];\n+\n+\tsnprintf(filename, sizeof(filename), \"%s/\" PCI_PRI_FMT,\n+\t\t SYSFS_PCI_DEVICES, addr->domain, addr->bus, addr->devid,\n+\t\t addr->function);\n+\n+\treturn pci_scan_one(filename, addr->domain, addr->bus, addr->devid,\n+\t\t\t    addr->function);\n+}\n+\n /*\n  * split up a pci address into its constituent parts.\n  */\n",
    "prefixes": [
        "dpdk-dev",
        "v2",
        "13/17"
    ]
}