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GET /api/patches/1525717/?format=api
{ "id": 1525717, "url": "http://patchwork.ozlabs.org/api/patches/1525717/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/patch/83639605b592cfc094702acbe1aba4519e974902.1631094144.git.grive@u256.net/", "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": "<83639605b592cfc094702acbe1aba4519e974902.1631094144.git.grive@u256.net>", "list_archive_url": null, "date": "2021-09-08T09:47:31", "name": "[ovs-dev,v5,07/27] dpctl: Add function to read hardware offload statistics", "commit_ref": "9ab104718bcb00b0ac6fd33e4434763a5e00013d", "pull_url": null, "state": "accepted", "archived": false, "hash": "dc99db0ab335b88d518db7f51a282d87bb40ef88", "submitter": { "id": 78795, "url": "http://patchwork.ozlabs.org/api/people/78795/?format=api", "name": "Gaetan Rivet", "email": "grive@u256.net" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/openvswitch/patch/83639605b592cfc094702acbe1aba4519e974902.1631094144.git.grive@u256.net/mbox/", "series": [ { "id": 261424, "url": "http://patchwork.ozlabs.org/api/series/261424/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/list/?series=261424", "date": "2021-09-08T09:47:24", "name": "dpif-netdev: Parallel offload processing", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/261424/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1525717/comments/", "check": "success", "checks": "http://patchwork.ozlabs.org/api/patches/1525717/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<ovs-dev-bounces@openvswitch.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "ovs-dev@openvswitch.org" ], "Delivered-To": [ "patchwork-incoming@bilbo.ozlabs.org", "ovs-dev@lists.linuxfoundation.org" ], "Authentication-Results": [ "ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=u256.net header.i=@u256.net header.a=rsa-sha256\n header.s=fm2 header.b=kcDpvrMf;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=messagingengine.com header.i=@messagingengine.com\n header.a=rsa-sha256 header.s=fm3 header.b=TcFWpsXu;\n\tdkim-atps=neutral", "ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=openvswitch.org\n (client-ip=2605:bc80:3010::133; 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charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "ovs-dev-bounces@openvswitch.org", "Sender": "\"dev\" <ovs-dev-bounces@openvswitch.org>" }, "content": "Expose a function to query datapath offload statistics.\nThis function is separate from the current one in netdev-offload\nas it exposes more detailed statistics from the datapath, instead of\nonly from the netdev-offload provider.\n\nEach datapath is meant to use the custom counters as it sees fit for its\nhandling of hardware offloads.\n\nCall the new API from dpctl.\n\nSigned-off-by: Gaetan Rivet <grive@u256.net>\nReviewed-by: Eli Britstein <elibr@nvidia.com>\nReviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>\n---\n lib/dpctl.c | 36 ++++++++++++++++++++++++++++++++++++\n lib/dpif-netdev.c | 1 +\n lib/dpif-netlink.c | 1 +\n lib/dpif-provider.h | 7 +++++++\n lib/dpif.c | 8 ++++++++\n lib/dpif.h | 9 +++++++++\n 6 files changed, 62 insertions(+)", "diff": "diff --git a/lib/dpctl.c b/lib/dpctl.c\nindex ef8ae7402..6ff73e2d9 100644\n--- a/lib/dpctl.c\n+++ b/lib/dpctl.c\n@@ -1541,6 +1541,40 @@ dpctl_del_flows(int argc, const char *argv[], struct dpctl_params *dpctl_p)\n return error;\n }\n \n+static int\n+dpctl_offload_stats_show(int argc, const char *argv[],\n+ struct dpctl_params *dpctl_p)\n+{\n+ struct netdev_custom_stats stats;\n+ struct dpif *dpif;\n+ int error;\n+ size_t i;\n+\n+ error = opt_dpif_open(argc, argv, dpctl_p, 2, &dpif);\n+ if (error) {\n+ return error;\n+ }\n+\n+ memset(&stats, 0, sizeof(stats));\n+ error = dpif_offload_stats_get(dpif, &stats);\n+ if (error) {\n+ dpctl_error(dpctl_p, error, \"retrieving offload statistics\");\n+ goto close_dpif;\n+ }\n+\n+ dpctl_print(dpctl_p, \"HW Offload stats:\\n\");\n+ for (i = 0; i < stats.size; i++) {\n+ dpctl_print(dpctl_p, \" %s: %6\" PRIu64 \"\\n\",\n+ stats.counters[i].name, stats.counters[i].value);\n+ }\n+\n+ netdev_free_custom_stats_counters(&stats);\n+\n+close_dpif:\n+ dpif_close(dpif);\n+ return error;\n+}\n+\n static int\n dpctl_help(int argc OVS_UNUSED, const char *argv[] OVS_UNUSED,\n struct dpctl_params *dpctl_p)\n@@ -2697,6 +2731,8 @@ static const struct dpctl_command all_commands[] = {\n { \"add-flows\", \"[dp] file\", 1, 2, dpctl_process_flows, DP_RW },\n { \"mod-flows\", \"[dp] file\", 1, 2, dpctl_process_flows, DP_RW },\n { \"del-flows\", \"[dp] [file]\", 0, 2, dpctl_del_flows, DP_RW },\n+ { \"offload-stats-show\", \"[dp]\",\n+ 0, 1, dpctl_offload_stats_show, DP_RO },\n { \"dump-conntrack\", \"[-m] [-s] [dp] [zone=N]\",\n 0, 4, dpctl_dump_conntrack, DP_RO },\n { \"flush-conntrack\", \"[dp] [zone=N] [ct-tuple]\", 0, 3,\ndiff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c\nindex 42c078657..a36ff9456 100644\n--- a/lib/dpif-netdev.c\n+++ b/lib/dpif-netdev.c\n@@ -8741,6 +8741,7 @@ const struct dpif_class dpif_netdev_class = {\n dpif_netdev_flow_dump_thread_destroy,\n dpif_netdev_flow_dump_next,\n dpif_netdev_operate,\n+ NULL, /* offload_stats_get */\n NULL, /* recv_set */\n NULL, /* handlers_set */\n NULL, /* number_handlers_required */\ndiff --git a/lib/dpif-netlink.c b/lib/dpif-netlink.c\nindex 34fc04237..b403b062f 100644\n--- a/lib/dpif-netlink.c\n+++ b/lib/dpif-netlink.c\n@@ -4293,6 +4293,7 @@ const struct dpif_class dpif_netlink_class = {\n dpif_netlink_flow_dump_thread_destroy,\n dpif_netlink_flow_dump_next,\n dpif_netlink_operate,\n+ NULL, /* offload_stats_get */\n dpif_netlink_recv_set,\n dpif_netlink_handlers_set,\n dpif_netlink_number_handlers_required,\ndiff --git a/lib/dpif-provider.h b/lib/dpif-provider.h\nindex 7e11b9697..8bdda37f0 100644\n--- a/lib/dpif-provider.h\n+++ b/lib/dpif-provider.h\n@@ -331,6 +331,13 @@ struct dpif_class {\n void (*operate)(struct dpif *dpif, struct dpif_op **ops, size_t n_ops,\n enum dpif_offload_type offload_type);\n \n+ /* Get hardware-offloads activity counters from a dataplane.\n+ * Those counters are not offload statistics (which are accessible through\n+ * netdev statistics), but a status of hardware offload management:\n+ * how many offloads are currently waiting, inserted, etc. */\n+ int (*offload_stats_get)(struct dpif *dpif,\n+ struct netdev_custom_stats *stats);\n+\n /* Enables or disables receiving packets with dpif_recv() for 'dpif'.\n * Turning packet receive off and then back on is allowed to change Netlink\n * PID assignments (see ->port_get_pid()). The client is responsible for\ndiff --git a/lib/dpif.c b/lib/dpif.c\nindex 8c4aed47b..97cca2841 100644\n--- a/lib/dpif.c\n+++ b/lib/dpif.c\n@@ -1427,6 +1427,14 @@ dpif_operate(struct dpif *dpif, struct dpif_op **ops, size_t n_ops,\n }\n }\n \n+int dpif_offload_stats_get(struct dpif *dpif,\n+ struct netdev_custom_stats *stats)\n+{\n+ return (dpif->dpif_class->offload_stats_get\n+ ? dpif->dpif_class->offload_stats_get(dpif, stats)\n+ : EOPNOTSUPP);\n+}\n+\n /* Returns a string that represents 'type', for use in log messages. */\n const char *\n dpif_upcall_type_to_string(enum dpif_upcall_type type)\ndiff --git a/lib/dpif.h b/lib/dpif.h\nindex 7c322d20e..3bb79a78d 100644\n--- a/lib/dpif.h\n+++ b/lib/dpif.h\n@@ -787,6 +787,15 @@ struct dpif_op {\n \n void dpif_operate(struct dpif *, struct dpif_op **ops, size_t n_ops,\n enum dpif_offload_type);\n+\n+/* Queries the datapath for hardware offloads stats.\n+ *\n+ * Statistics are written in 'stats' following the 'netdev_custom_stats'\n+ * format. They are allocated on the heap and must be freed by the caller,\n+ * using 'netdev_free_custom_stats_counters'.\n+ */\n+int dpif_offload_stats_get(struct dpif *dpif,\n+ struct netdev_custom_stats *stats);\n \f\n /* Upcalls. */\n \n", "prefixes": [ "ovs-dev", "v5", "07/27" ] }