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GET /api/patches/7928/?format=api
{ "id": 7928, "url": "https://patches.dpdk.org/api/patches/7928/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/1445582090-5927-3-git-send-email-stephen@networkplumber.org/", "project": { "id": 1, "url": "https://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": "<1445582090-5927-3-git-send-email-stephen@networkplumber.org>", "list_archive_url": "https://inbox.dpdk.org/dev/1445582090-5927-3-git-send-email-stephen@networkplumber.org", "date": "2015-10-23T06:34:46", "name": "[dpdk-dev,2/6] ethdev: add common function for reserving DMA regions", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": true, "hash": "0413397eb9a462530c5aebbcf8b066197190b56c", "submitter": { "id": 27, "url": "https://patches.dpdk.org/api/people/27/?format=api", "name": "Stephen Hemminger", "email": "stephen@networkplumber.org" }, "delegate": null, "mbox": "https://patches.dpdk.org/project/dpdk/patch/1445582090-5927-3-git-send-email-stephen@networkplumber.org/mbox/", "series": [], "comments": "https://patches.dpdk.org/api/patches/7928/comments/", "check": "pending", "checks": "https://patches.dpdk.org/api/patches/7928/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 34349C4A4;\n\tFri, 23 Oct 2015 08:34:49 +0200 (CEST)", "from mail-pa0-f44.google.com (mail-pa0-f44.google.com\n\t[209.85.220.44]) by dpdk.org (Postfix) with ESMTP id 31D0FC460\n\tfor <dev@dpdk.org>; Fri, 23 Oct 2015 08:34:46 +0200 (CEST)", "by pasz6 with SMTP id z6so109392689pas.2\n\tfor <dev@dpdk.org>; Thu, 22 Oct 2015 23:34:45 -0700 (PDT)", "from xeon-e3.home.lan (static-50-53-82-155.bvtn.or.frontiernet.net.\n\t[50.53.82.155]) by smtp.gmail.com with ESMTPSA id\n\tot8sm17078910pbb.26.2015.10.22.23.34.44\n\t(version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128);\n\tThu, 22 Oct 2015 23:34:45 -0700 (PDT)" ], "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20130820;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references;\n\tbh=y0Y5RG71Hl1BCQSWZ20JuXZYSBtuHkvR7VlYObFuQEM=;\n\tb=MOjJTwgX4xn0zMPY1kQ1C+HosvWmZVwyI1ft4bqEewqX0Eje6f8pzSt4DVS0Zm595G\n\tSx+msnRLUcdKGEIjqYQcDX47djlN1Ph9nCuQrI4uTB3EsUHJvVCgUZtMWjukVF6WrQUA\n\tlcJZv+kjxiiQgZUoN052NvOEUMUSxf+5hZ6ZS66MATCeczTRtPG3tsheTSPViajxVMBX\n\tUsYb3yxEbrHcNsHuzzS0bjfnNIYY6uu1yVN4kXTIDJsoMQkdeEM7uOkREJtBheEEum7/\n\tCH+NwmVa17iErx0ONHJ8ILEWjQCxaGq9jsHVa7crDALlk16n/xQWMvRpposAO+yzHn21\n\tdYJQ==", "X-Gm-Message-State": "ALoCoQlVaEAX/iwpytb31xdp1UoyniF0sgzPYCJet4MfXNEpKTG3RPOcQPepa3XFtIT99Raqt3It", "X-Received": "by 10.66.142.106 with SMTP id rv10mr20681531pab.29.1445582085595;\n\tThu, 22 Oct 2015 23:34:45 -0700 (PDT)", "From": "Stephen Hemminger <stephen@networkplumber.org>", "To": "dev@dpdk.org", "Date": "Thu, 22 Oct 2015 23:34:46 -0700", "Message-Id": "<1445582090-5927-3-git-send-email-stephen@networkplumber.org>", "X-Mailer": "git-send-email 2.1.4", "In-Reply-To": "<1445582090-5927-1-git-send-email-stephen@networkplumber.org>", "References": "<1445582090-5927-1-git-send-email-stephen@networkplumber.org>", "Subject": "[dpdk-dev] [PATCH 2/6] ethdev: add common function for reserving\n\tDMA regions", "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": "The code to create aligned DMA regions was copy-n-pasted throughout\nall the drivers. Since this code has to change now create a common\nfunction that just does the right thing for Xen at runtime.\n\nSigned-off-by: Stephen Hemminger <stephen@networkplumber.org>\n---\n lib/librte_ether/rte_ethdev.c | 24 ++++++++++++++++++++++++\n lib/librte_ether/rte_ethdev.h | 23 +++++++++++++++++++++++\n 2 files changed, 47 insertions(+)", "diff": "diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c\nindex f593f6e..6c520a3 100644\n--- a/lib/librte_ether/rte_ethdev.c\n+++ b/lib/librte_ether/rte_ethdev.c\n@@ -2838,6 +2838,30 @@ rte_eth_dev_rx_intr_ctl(uint8_t port_id, int epfd, int op, void *data)\n \n \treturn 0;\n }\n+ \n+const struct rte_memzone *\n+rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,\n+\t\t\t uint16_t queue_id, size_t size, unsigned align,\n+\t\t\t int socket_id)\n+{\n+\tchar z_name[RTE_MEMZONE_NAMESIZE];\n+\tconst struct rte_memzone *mz;\n+\n+\tsnprintf(z_name, sizeof(z_name), \"%s_%s_%d_%d\",\n+\t\t dev->driver->pci_drv.name, ring_name,\n+\t\t dev->data->port_id, queue_id);\n+\n+\tmz = rte_memzone_lookup(z_name);\n+\tif (mz)\n+\t\treturn mz;\n+\n+\tif (is_xen_dom0_supported())\n+\t\treturn rte_memzone_reserve_bounded(z_name, size, socket_id,\n+\t\t\t\t\t\t 0, align, RTE_PGSIZE_2M);\n+\telse\n+\t\treturn rte_memzone_reserve_aligned(z_name, size, socket_id,\n+\t\t\t\t\t\t 0, align);\n+}\n \n int\n rte_eth_dev_rx_intr_ctl_q(uint8_t port_id, uint16_t queue_id,\ndiff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h\nindex 8a8c82b..8d2098d 100644\n--- a/lib/librte_ether/rte_ethdev.h\n+++ b/lib/librte_ether/rte_ethdev.h\n@@ -3598,6 +3598,29 @@ extern int rte_eth_timesync_read_rx_timestamp(uint8_t port_id,\n extern int rte_eth_timesync_read_tx_timestamp(uint8_t port_id,\n \t\t\t\t\t struct timespec *timestamp);\n \n+/**\n+ * Create memzone for HW rings.\n+ * malloc can't be used as the physical address is needed.\n+ * If the memzone is already created, then this function returns a ptr\n+ * to the old one.\n+ *\n+ * @param eth_dev\n+ * The *eth_dev* pointer is the address of the *rte_eth_dev* structure\n+ * @param name\n+ * The name of the memory zone\n+ * @param queue_id\n+ * The index of the queue to add to name\n+ * @param size\n+ * The sizeof of the memory area\n+ * @param align\n+ * Alignment for resulting memzone. Must be a power of 2.\n+ * @param socket_id\n+ * The *socket_id* argument is the socket identifier in case of NUMA.\n+ */\n+const struct rte_memzone *\n+rte_eth_dma_zone_reserve(const struct rte_eth_dev *eth_dev, const char *name,\n+\t\t\t uint16_t queue_id, size_t size,\n+\t\t\t unsigned align, int socket_id);\n #ifdef __cplusplus\n }\n #endif\n", "prefixes": [ "dpdk-dev", "2/6" ] }