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GET /api/patches/818458/?format=api
{ "id": 818458, "url": "http://patchwork.ozlabs.org/api/patches/818458/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/patch/1506404199-23579-4-git-send-email-yliu@fridaylinux.org/", "project": { "id": 47, "url": "http://patchwork.ozlabs.org/api/projects/47/?format=api", "name": "Open vSwitch", "link_name": "openvswitch", "list_id": "ovs-dev.openvswitch.org", "list_email": "ovs-dev@openvswitch.org", "web_url": "http://openvswitch.org/", "scm_url": "git@github.com:openvswitch/ovs.git", "webscm_url": "https://github.com/openvswitch/ovs", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1506404199-23579-4-git-send-email-yliu@fridaylinux.org>", "list_archive_url": null, "date": "2017-09-26T05:36:33", "name": "[ovs-dev,v3,3/9] netdev-dpdk: convert ufid to dpdk flow", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "67e8237925abd982c1a2ba117e3013d6ae9e2ea9", "submitter": { "id": 72215, "url": "http://patchwork.ozlabs.org/api/people/72215/?format=api", "name": "Yuanhan Liu", "email": "yliu@fridaylinux.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/openvswitch/patch/1506404199-23579-4-git-send-email-yliu@fridaylinux.org/mbox/", "series": [ { "id": 5061, "url": "http://patchwork.ozlabs.org/api/series/5061/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/list/?series=5061", "date": "2017-09-26T05:36:30", "name": "OVS-DPDK flow offload with rte_flow", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/5061/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/818458/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/818458/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<ovs-dev-bounces@openvswitch.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "dev@openvswitch.org" ], "Delivered-To": [ "patchwork-incoming@bilbo.ozlabs.org", "ovs-dev@mail.linuxfoundation.org" ], "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=openvswitch.org\n\t(client-ip=140.211.169.12; 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a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references;\n\tbh=Fx62Sf5QTG/BlHmlZ/7HUf3Lo11Xi/s9JIYKjaxTL5k=;\n\tb=DvxMStfgMuvF6CwMY4TkuNnnIhLyqadv8RsYCJfhOZPhEr4gbUGvqdh2bFVumcGDUV\n\toO0/8/hqvG0BcwdTE3XiSvNokKeyvGMS+reB5qOKQD6n8TRtLqh4yDnpPo7UULI3W3J0\n\t3MwB0xn8t248/5jTBs/JcenhcQkcRxfsKXGLOjw7DhYewY7J/AyeKiLgXcL/OcO/Ox3v\n\tsP+SfNo7AmVawN01BPOUc6YI6kYOT9yM+BHkFn+KxaRYIUmWVLToqluggZxqPCXRjlYo\n\tApthBOV5aXY4PIilG5xuKuyG7PIEDT+/QOfV07bPdht4ga1jcXXcM4PLhGxFW1jkf5lA\n\ttfbQ==", "X-Gm-Message-State": "AHPjjUiXcwc1ZSHXjPAPIBroQ1ERGGhOvad9q+Ta1gm2DTD30eSC2CD8\n\t/2qk5Xxg4XO5P6NE2Ts6tzouhBFkdH4rBA==", "X-Google-Smtp-Source": "AOwi7QC29QCgIABtfwzYe906rAiLB9Z9v0QPPT6Zx7SARdCKquI2fZQDYQ7Z1d8DDjlGk7dwiamftA==", "X-Received": "by 10.98.178.204 with SMTP id z73mr9841139pfl.107.1506404337115; \n\tMon, 25 Sep 2017 22:38:57 -0700 (PDT)", "From": "Yuanhan Liu <yliu@fridaylinux.org>", "To": "dev@openvswitch.org", "Date": "Tue, 26 Sep 2017 13:36:33 +0800", "Message-Id": "<1506404199-23579-4-git-send-email-yliu@fridaylinux.org>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1506404199-23579-1-git-send-email-yliu@fridaylinux.org>", "References": "<1506404199-23579-1-git-send-email-yliu@fridaylinux.org>", "X-Spam-Status": "No, score=0.0 required=5.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tRCVD_IN_DNSWL_NONE autolearn=disabled version=3.3.1", "X-Spam-Checker-Version": "SpamAssassin 3.3.1 (2010-03-16) on\n\tsmtp1.linux-foundation.org", "Cc": "Simon Horman <simon.horman@netronome.com>", "Subject": "[ovs-dev] [PATCH v3 3/9] netdev-dpdk: convert ufid to dpdk flow", "X-BeenThere": "ovs-dev@openvswitch.org", "X-Mailman-Version": "2.1.12", "Precedence": "list", "List-Id": "<ovs-dev.openvswitch.org>", "List-Unsubscribe": "<https://mail.openvswitch.org/mailman/options/ovs-dev>,\n\t<mailto:ovs-dev-request@openvswitch.org?subject=unsubscribe>", "List-Archive": "<http://mail.openvswitch.org/pipermail/ovs-dev/>", "List-Post": "<mailto:ovs-dev@openvswitch.org>", "List-Help": "<mailto:ovs-dev-request@openvswitch.org?subject=help>", "List-Subscribe": "<https://mail.openvswitch.org/mailman/listinfo/ovs-dev>,\n\t<mailto:ovs-dev-request@openvswitch.org?subject=subscribe>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "ovs-dev-bounces@openvswitch.org", "Errors-To": "ovs-dev-bounces@openvswitch.org" }, "content": "Flows offloaded to DPDK are identified by rte_flow pointer while OVS\nflows are identified by ufid. This patches adds a hmap to convert ufid\nto dpdk flow (rte_flow).\n\nMost of the code are stolen from netdev-tc-offloads.c, with some\nmodificatons.\n\nSome functions are marked as \"inline\", which is a trick to workaround\nthe temp \"functiond defined but not used\" warnings.\n\nCo-authored-by: Finn Christensen <fc@napatech.com>\nSigned-off-by: Yuanhan Liu <yliu@fridaylinux.org>\nSigned-off-by: Finn Christensen <fc@napatech.com>\n---\n\nv3: warn on failed to find ufi_data_flow_data now assocociated with ufid\n---\n lib/netdev-dpdk.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++++++\n 1 file changed, 92 insertions(+)", "diff": "diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c\nindex f58e9be..1be9131 100644\n--- a/lib/netdev-dpdk.c\n+++ b/lib/netdev-dpdk.c\n@@ -36,6 +36,7 @@\n #include <rte_meter.h>\n #include <rte_pci.h>\n #include <rte_vhost.h>\n+#include <rte_flow.h>\n \n #include \"dirs.h\"\n #include \"dp-packet.h\"\n@@ -58,6 +59,7 @@\n #include \"sset.h\"\n #include \"unaligned.h\"\n #include \"timeval.h\"\n+#include \"uuid.h\"\n #include \"unixctl.h\"\n \n enum {VIRTIO_RXQ, VIRTIO_TXQ, VIRTIO_QNUM};\n@@ -3312,6 +3314,96 @@ unlock:\n return err;\n }\n \n+/*\n+ * A mapping from ufid to dpdk rte_flow pointer\n+ */\n+\n+static struct hmap ufid_dpdk_flow = HMAP_INITIALIZER(&ufid_dpdk_flow);\n+static struct ovs_mutex ufid_lock = OVS_MUTEX_INITIALIZER;\n+\n+struct ufid_dpdk_flow_data {\n+ struct hmap_node node;\n+ ovs_u128 ufid;\n+ struct rte_flow *rte_flow;\n+};\n+\n+/*\n+ * Find ufid_dpdk_flow_data node associated with @ufid\n+ */\n+static struct ufid_dpdk_flow_data *\n+find_ufid_dpdk_flow_mapping(const ovs_u128 *ufid)\n+{\n+ size_t hash = hash_bytes(ufid, sizeof(*ufid), 0);\n+ struct ufid_dpdk_flow_data *data = NULL;\n+\n+ ovs_mutex_lock(&ufid_lock);\n+ HMAP_FOR_EACH_WITH_HASH (data, node, hash, &ufid_dpdk_flow) {\n+ if (ovs_u128_equals(*ufid, data->ufid)) {\n+ break;\n+ }\n+ }\n+ ovs_mutex_unlock(&ufid_lock);\n+\n+ return data;\n+}\n+\n+/*\n+ * Remove ufid_dpdk_flow_data node associated with @ufid\n+ */\n+static inline void\n+del_ufid_dpdk_flow_mapping(const ovs_u128 *ufid)\n+{\n+ struct ufid_dpdk_flow_data *data;\n+\n+ data = find_ufid_dpdk_flow_mapping(ufid);\n+ if (data) {\n+ ovs_mutex_lock(&ufid_lock);\n+ hmap_remove(&ufid_dpdk_flow, &data->node);\n+ free(data);\n+ ovs_mutex_unlock(&ufid_lock);\n+ } else {\n+ VLOG_WARN(\"ufid \"UUID_FMT\"is not installed in the dpdk flow mapping\\n\",\n+ UUID_ARGS((struct uuid *)ufid));\n+ }\n+}\n+\n+/* Add ufid to dpdk_flow mapping */\n+static inline void\n+add_ufid_dpdk_flow_mapping(const ovs_u128 *ufid, struct rte_flow *rte_flow)\n+{\n+ size_t hash = hash_bytes(ufid, sizeof(*ufid), 0);\n+ struct ufid_dpdk_flow_data *data = xzalloc(sizeof(*data));\n+\n+ /*\n+ * We should not simply overwrite an existing rte flow.\n+ * We should have deleted it first before re-adding it.\n+ * Thus, if following assert triggers, something is wrong:\n+ * the rte_flow is not destroyed.\n+ */\n+ ovs_assert(find_ufid_dpdk_flow_mapping(ufid) == NULL);\n+\n+ data->ufid = *ufid;\n+ data->rte_flow = rte_flow;\n+\n+ ovs_mutex_lock(&ufid_lock);\n+ hmap_insert(&ufid_dpdk_flow, &data->node, hash);\n+ ovs_mutex_unlock(&ufid_lock);\n+}\n+\n+/* Get rte_flow by ufid.\n+ *\n+ * Returns rte rte_flow if successful. Otherwise returns 0.\n+ */\n+static inline struct rte_flow *\n+get_rte_flow_by_ufid(const ovs_u128 *ufid)\n+{\n+ struct ufid_dpdk_flow_data *data;\n+\n+ data = find_ufid_dpdk_flow_mapping(ufid);\n+ return data ? data->rte_flow : NULL;\n+}\n+\n+\n #define NETDEV_DPDK_CLASS(NAME, INIT, CONSTRUCT, DESTRUCT, \\\n SET_CONFIG, SET_TX_MULTIQ, SEND, \\\n GET_CARRIER, GET_STATS, \\\n", "prefixes": [ "ovs-dev", "v3", "3/9" ] }