{"id":810037,"url":"http://patchwork.ozlabs.org/api/patches/810037/?format=json","web_url":"http://patchwork.ozlabs.org/project/openvswitch/patch/1504603381-30071-4-git-send-email-yliu@fridaylinux.org/","project":{"id":47,"url":"http://patchwork.ozlabs.org/api/projects/47/?format=json","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":"<1504603381-30071-4-git-send-email-yliu@fridaylinux.org>","list_archive_url":null,"date":"2017-09-05T09:22:56","name":"[ovs-dev,v2,3/8] netdev-dpdk: convert ufid to dpdk flow","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"56fe618c33e4805d5e22ae7d4dd0f18fc8271533","submitter":{"id":72215,"url":"http://patchwork.ozlabs.org/api/people/72215/?format=json","name":"Yuanhan Liu","email":"yliu@fridaylinux.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/openvswitch/patch/1504603381-30071-4-git-send-email-yliu@fridaylinux.org/mbox/","series":[{"id":1528,"url":"http://patchwork.ozlabs.org/api/series/1528/?format=json","web_url":"http://patchwork.ozlabs.org/project/openvswitch/list/?series=1528","date":"2017-09-05T09:22:53","name":"OVS-DPDK flow offload with rte_flow","version":2,"mbox":"http://patchwork.ozlabs.org/series/1528/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/810037/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/810037/checks/","tags":{},"related":[],"headers":{"Return-Path":"","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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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 \nSigned-off-by: Yuanhan Liu \nSigned-off-by: Finn Christensen \n---\n lib/netdev-dpdk.c | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++++++\n 1 file changed, 88 insertions(+)","diff":"diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c\nindex f58e9be..46f9885 100644\n--- a/lib/netdev-dpdk.c\n+++ b/lib/netdev-dpdk.c\n@@ -36,6 +36,7 @@\n #include \n #include \n #include \n+#include \n \n #include \"dirs.h\"\n #include \"dp-packet.h\"\n@@ -3312,6 +3313,93 @@ 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+ }\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","v2","3/8"]}