From patchwork Wed Sep 4 13:53:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Abeni X-Patchwork-Id: 13790876 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 62A691D9357 for ; Wed, 4 Sep 2024 13:56:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725458209; cv=none; b=XCUtgeCncoccj1D3Zf3C+74r3BRkLNsvnme2MsCRFSk39JHsOFNJsc4TB0LsJu+/EsoN0BpTqRvITFm1OWQDEEJxeOQaiSe2y1AKwsH1uxezOaV9n3aq2P0+P+/eafHew/v83XDeBikKkAtLA2E35JD4rTEIDMU874RueX32KQQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725458209; c=relaxed/simple; bh=36FksORXWoX9SMDxa5U79AElUwgKmgKDdd6uQqioAtk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=CcdBZCWxQJ5gYAD00EEAHsKASX9jBLL1xseL0J+JvmWentYQDRCVcnic/79ZDefqZEUNZImyxphTuL8kmgrtNKCvg6Q+QxnCp2xvfSncjDzk58qQiEtfZgpQALMaCDUE0dQfsQjY462Glpb2yJrysrRqu4CwaKKelEQA42izJdI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=d2eBMVua; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="d2eBMVua" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1725458205; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=pH5/nva7blU637n1lHlctRPIke79gY2kkCOW9Prjaao=; b=d2eBMVuazVJFrdBcW9QwzRn1wggr9NQtVj0AMOqEqgT97GOlvJ4kPpHwEohb2VqvvqeDuu 7zDgFlUrbMMzO+CMK0XPhx7qk52mgE9FLS9p8o0OFUyDUNercsu3Pnjuzjl57eItsoGwlh J6ElKzGw044asL180z1+eP0ZfTtjMoo= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-262-gVpkTC81Mk-Tf-tyDDojqA-1; Wed, 04 Sep 2024 09:56:39 -0400 X-MC-Unique: gVpkTC81Mk-Tf-tyDDojqA-1 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 0CB7919560A5; Wed, 4 Sep 2024 13:56:37 +0000 (UTC) Received: from gerbillo.redhat.com (unknown [10.45.225.58]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 8C4A9195608A; Wed, 4 Sep 2024 13:56:26 +0000 (UTC) From: Paolo Abeni To: netdev@vger.kernel.org Cc: Jakub Kicinski , Jiri Pirko , Madhu Chittim , Sridhar Samudrala , Simon Horman , John Fastabend , Sunil Kovvuri Goutham , Jamal Hadi Salim , Donald Hunter , anthony.l.nguyen@intel.com, przemyslaw.kitszel@intel.com, intel-wired-lan@lists.osuosl.org, edumazet@google.com Subject: [PATCH v6 net-next 00/15] net: introduce TX H/W shaping API Date: Wed, 4 Sep 2024 15:53:32 +0200 Message-ID: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 X-Patchwork-Delegate: kuba@kernel.org We have a plurality of shaping-related drivers API, but none flexible enough to meet existing demand from vendors[1]. This series introduces new device APIs to configure in a flexible way TX H/W shaping. The new functionalities are exposed via a newly defined generic netlink interface and include introspection capabilities. Some self-tests are included, on top of a dummy netdevsim implementation. Finally a basic implementation for the iavf driver is provided. Some usage examples: * Configure shaping on a given queue: ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/shaper.yaml \ --do set --json '{"ifindex": '$IFINDEX', "shaper": {"handle": {"scope": "queue", "id":'$QUEUEID'}, "bw-max": 2000000}}' * Container B/W sharing The orchestration infrastructure wants to group the container-related queues under a RR scheduling and limit the aggregate bandwidth: ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/shaper.yaml \ --do group --json '{"ifindex": '$IFINDEX', "leaves": [ {"handle": {"scope": "queue", "id":'$QID1'}, "weight": '$W1'}, {"handle": {"scope": "queue", "id":'$QID2'}, "weight": '$W2'}], {"handle": {"scope": "queue", "id":'$QID3'}, "weight": '$W3'}], "node": {"handle": {"scope":"node"}, "bw-max": 10000000}}' {'ifindex': $IFINDEX, 'handle': {'scope': 'node', 'id': 0}} Q1 \ \ Q2 -- node 0 ------- netdev / (bw-max: 10M) Q3 / * Delegation A containers wants to limit the aggregate B/W bandwidth of 2 of the 3 queues it owns - the starting configuration is the one from the previous point: SPEC=Documentation/netlink/specs/net_shaper.yaml ./tools/net/ynl/cli.py --spec $SPEC \ --do group --json '{"ifindex": '$IFINDEX', "leaves": [ {"handle": {"scope": "queue", "id":'$QID1'}, "weight": '$W1'}, {"handle": {"scope": "queue", "id":'$QID2'}, "weight": '$W2'}], "node": {"handle": {"scope": "node"}, "bw-max": 5000000 }}' {'ifindex': $IFINDEX, 'handle': {'scope': 'node', 'id': 1}} Q1 -- node 1 --------\ / (bw-max: 5M) \ Q2 / node 0 ------- netdev / (bw-max: 10M) Q3 ------------------ * Cleanup: To delete a single queue shaper: ./tools/net/ynl/cli.py --spec $SPEC --do delete --json \ '{"ifindex": '$IFINDEX', "handle": {"scope": "queue", "id":'$QID3'}}' Q1 -- node 1 --------\ / (bw-max: 5M) \ Q2 / node 0 ------- netdev (bw-max: 10M) Deleting a node shaper relinks all its leaves to the node's parent: ./tools/net/ynl/cli.py --spec $SPEC --do delete --json \ '{"ifindex": '$IFINDEX', "handle": {"scope": "node", "id":1}}' Q1 ------\ \ node 0 ------- netdev / (bw-max: 10M) Q2 ----- Deleting the last shaper under a node shaper deletes the node, too: ./tools/net/ynl/cli.py --spec $SPEC --do delete --json \ '{"ifindex": '$IFINDEX', "handle": {"scope": "queue", "id":'$QID1'}}' ./tools/net/ynl/cli.py --spec $SPEC --do delete --json \ '{"ifindex": '$IFINDEX', "handle": {"scope": "queue", "id":'$QID2'}}' ./tools/net/ynl/cli.py --spec $SPEC --do get --json \ '{"ifindex": '$IFINDEX', "handle": {"scope": "node", "id": 0}}' Netlink error: No such file or directory nl_len = 44 (28) nl_flags = 0x300 nl_type = 2 error: -2 extack: {'bad-attr': '.handle'} [1] https://lore.kernel.org/netdev/20240405102313.GA310894@kernel.org/ --- Changes from v5: - handle/shaper unsplit - removed 'binding' from NL api - several helper renames - added rcu protection to shaper pointer - implemented value checking into the core - handle device channels reconf - consolidate NL ctx handling - dropped idr allocator, leverage the existing xarray - caps names shrinking - group() op is optional - cap callback can't fail - more self-tests v5: https://lore.kernel.org/netdev/cover.1724944116.git.pabeni@redhat.com/ Changes from v4: - ops operate on struct binding - 'root' -> 'node' rename - most core function/helpers operate on 'binding' - use NL_SET_BAD_ATTR where possible - some code deduplication v4: https://lore.kernel.org/netdev/cover.1724165948.git.pabeni@redhat.com/ Changes from v3: - rename - locking - delete operates on node, too v3: https://lore.kernel.org/netdev/cover.1722357745.git.pabeni@redhat.com/ Changes from RFC v2: - added patch 1 - fixed deprecated API usage RFC v2: https://lore.kernel.org/netdev/cover.1721851988.git.pabeni@redhat.com/ Changes from RFC v1: - set() and delete() ops operate on a single shaper - added group() op to allow grouping and nesting - split the NL implementation into multiple patches to help reviewing RFC v1: https://lore.kernel.org/netdev/cover.1719518113.git.pabeni@redhat.com/ Paolo Abeni (11): genetlink: extend info user-storage to match NL cb ctx netlink: spec: add shaper YAML spec net-shapers: implement NL get operation net-shapers: implement NL set and delete operations net-shapers: implement NL group operation net-shapers: implement delete support for NODE scope shaper net-shapers: implement shaper cleanup on queue deletion netlink: spec: add shaper introspection support net: shaper: implement introspection support net-shapers: implement cap validation in the core testing: net-drv: add basic shaper test Sudheer Mogilappagari (2): iavf: Add net_shaper_ops support iavf: add support to exchange qos capabilities Wenjun Wu (2): virtchnl: support queue rate limit and quanta size configuration ice: Support VF queue rate limit and quanta size configuration Documentation/netlink/specs/net_shaper.yaml | 401 +++++ Documentation/networking/kapi.rst | 3 + MAINTAINERS | 1 + drivers/net/Kconfig | 1 + drivers/net/ethernet/intel/Kconfig | 1 + drivers/net/ethernet/intel/iavf/iavf.h | 13 + drivers/net/ethernet/intel/iavf/iavf_main.c | 159 +- drivers/net/ethernet/intel/iavf/iavf_txrx.h | 2 + .../net/ethernet/intel/iavf/iavf_virtchnl.c | 157 +- drivers/net/ethernet/intel/ice/ice.h | 2 + drivers/net/ethernet/intel/ice/ice_base.c | 2 + drivers/net/ethernet/intel/ice/ice_common.c | 21 + .../net/ethernet/intel/ice/ice_hw_autogen.h | 8 + drivers/net/ethernet/intel/ice/ice_txrx.h | 1 + drivers/net/ethernet/intel/ice/ice_type.h | 1 + drivers/net/ethernet/intel/ice/ice_vf_lib.h | 8 + drivers/net/ethernet/intel/ice/ice_virtchnl.c | 335 ++++ drivers/net/ethernet/intel/ice/ice_virtchnl.h | 11 + .../intel/ice/ice_virtchnl_allowlist.c | 6 + drivers/net/netdevsim/netdev.c | 39 + drivers/net/vxlan/vxlan_mdb.c | 2 +- include/linux/avf/virtchnl.h | 119 ++ include/linux/netdevice.h | 21 + include/linux/netlink.h | 5 +- include/net/genetlink.h | 8 +- include/net/net_shaper.h | 120 ++ include/uapi/linux/net_shaper.h | 97 ++ net/Kconfig | 3 + net/Makefile | 1 + net/core/dev.c | 8 + net/core/dev.h | 10 + net/core/netdev-genl.c | 2 +- net/core/rtnetlink.c | 2 +- net/devlink/devl_internal.h | 2 +- net/ethtool/rss.c | 2 +- net/netfilter/nf_conntrack_netlink.c | 2 +- net/netlink/genetlink.c | 4 +- net/shaper/Makefile | 8 + net/shaper/shaper.c | 1460 +++++++++++++++++ net/shaper/shaper_nl_gen.c | 162 ++ net/shaper/shaper_nl_gen.h | 46 + tools/testing/selftests/drivers/net/Makefile | 1 + tools/testing/selftests/drivers/net/shaper.py | 458 ++++++ .../testing/selftests/net/lib/py/__init__.py | 1 + tools/testing/selftests/net/lib/py/ynl.py | 5 + 45 files changed, 3707 insertions(+), 14 deletions(-) create mode 100644 Documentation/netlink/specs/net_shaper.yaml create mode 100644 include/net/net_shaper.h create mode 100644 include/uapi/linux/net_shaper.h create mode 100644 net/shaper/Makefile create mode 100644 net/shaper/shaper.c create mode 100644 net/shaper/shaper_nl_gen.c create mode 100644 net/shaper/shaper_nl_gen.h create mode 100755 tools/testing/selftests/drivers/net/shaper.py