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GET /api/patches/1558024/
{ "id": 1558024, "url": "http://patchwork.ozlabs.org/api/patches/1558024/", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/patch/20211122112256.2011194-9-amorenoz@redhat.com/", "project": { "id": 47, "url": "http://patchwork.ozlabs.org/api/projects/47/", "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": "<20211122112256.2011194-9-amorenoz@redhat.com>", "list_archive_url": null, "date": "2021-11-22T11:22:46", "name": "[ovs-dev,v1,08/18] python: add ovs datapath flow parsing", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "e66f21bbec5852fc551781269d694d1a0613db84", "submitter": { "id": 77477, "url": "http://patchwork.ozlabs.org/api/people/77477/", "name": "Adrian Moreno", "email": "amorenoz@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/openvswitch/patch/20211122112256.2011194-9-amorenoz@redhat.com/mbox/", "series": [ { "id": 273222, "url": "http://patchwork.ozlabs.org/api/series/273222/", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/list/?series=273222", "date": "2021-11-22T11:22:39", "name": "python: add flow parsing library", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/273222/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1558024/comments/", "check": "fail", "checks": "http://patchwork.ozlabs.org/api/patches/1558024/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@lists.linuxfoundation.org" ], 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(Postfix) with ESMTPS id 839C010168C0\n for <dev@openvswitch.org>; Mon, 22 Nov 2021 11:23:31 +0000 (UTC)", "from amorenoz.users.ipa.redhat.com (unknown [10.2.16.196])\n by smtp.corp.redhat.com (Postfix) with ESMTP id 45E4260862;\n Mon, 22 Nov 2021 11:23:30 +0000 (UTC)" ], "X-Virus-Scanned": [ "amavisd-new at osuosl.org", "amavisd-new at osuosl.org" ], "X-Greylist": "domain auto-whitelisted by SQLgrey-1.8.0", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1637580215;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=oXMglsVZetRuyyan8FiQ7vspz5bMLplRJvpqqvb4vOE=;\n b=iDgUfn6T7K6iCJmiD1MwbPVXZk+2IiZulLf/l3sg94ZeMWNCFRjD8zxG2cR4bpsIpLfrxh\n UaAAp5R7jTV7llqJEctamzJ4q3CZA5z3iqiNdEKnTVn3Sx15z/g0OqRXNdu89FchtKQny5\n 7kkBeLd+fQN7RCyl33nLfflH32g6LR0=", "X-MC-Unique": "DpUhfED5NtuAodAwZ8tnNw-1", "From": "Adrian Moreno <amorenoz@redhat.com>", "To": "dev@openvswitch.org", "Date": "Mon, 22 Nov 2021 12:22:46 +0100", "Message-Id": "<20211122112256.2011194-9-amorenoz@redhat.com>", "In-Reply-To": "<20211122112256.2011194-1-amorenoz@redhat.com>", "References": "<20211122112256.2011194-1-amorenoz@redhat.com>", "MIME-Version": "1.0", "X-Scanned-By": "MIMEDefang 2.79 on 10.5.11.13", "X-Mimecast-Spam-Score": "0", "X-Mimecast-Originator": "redhat.com", "Subject": "[ovs-dev] [PATCH v1 08/18] python: add ovs datapath flow parsing", "X-BeenThere": "ovs-dev@openvswitch.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "<ovs-dev.openvswitch.org>", "List-Unsubscribe": "<https://mail.openvswitch.org/mailman/options/ovs-dev>,\n <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 <mailto:ovs-dev-request@openvswitch.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "ovs-dev-bounces@openvswitch.org", "Sender": "\"dev\" <ovs-dev-bounces@openvswitch.org>" }, "content": "A ODPFlow is a Flow with the following sections:\nufid\ninfo (e.g: bytes, packets, dp, etc)\nmatch\nactions\n\nUse a factory class ODPFlowFactory to cache the decoder objects.\n\nOnly three datapath actions require special handling:\ngre: because it has double parenthesys\ngeneve: because it supports many concatenated lists of options\nnat: we reuse the decoder used for openflow actions\n\nSigned-off-by: Adrian Moreno <amorenoz@redhat.com>\n---\n python/automake.mk | 3 +-\n python/ovs/flows/odp.py | 723 ++++++++++++++++++++++++++++++++++++++++\n 2 files changed, 725 insertions(+), 1 deletion(-)\n create mode 100644 python/ovs/flows/odp.py", "diff": "diff --git a/python/automake.mk b/python/automake.mk\nindex d1464d7f6..8b0713cfc 100644\n--- a/python/automake.mk\n+++ b/python/automake.mk\n@@ -48,7 +48,8 @@ ovs_pyfiles = \\\n \tpython/ovs/flows/list.py \\\n \tpython/ovs/flows/flow.py \\\n \tpython/ovs/flows/ofp.py \\\n-\tpython/ovs/flows/ofp_act.py\n+\tpython/ovs/flows/ofp_act.py \\\n+\tpython/ovs/flows/odp.py\n \n # These python files are used at build time but not runtime,\n # so they are not installed.\ndiff --git a/python/ovs/flows/odp.py b/python/ovs/flows/odp.py\nnew file mode 100644\nindex 000000000..8fe721f86\n--- /dev/null\n+++ b/python/ovs/flows/odp.py\n@@ -0,0 +1,723 @@\n+\"\"\" Defines an Openvswitch Datapath Flow\n+\"\"\"\n+import re\n+from functools import partial\n+\n+from ovs.flows.flow import Flow, Section\n+\n+from ovs.flows.kv import (\n+ KVParser,\n+ KVDecoders,\n+ nested_kv_decoder,\n+ decode_nested_kv,\n+)\n+from ovs.flows.decoders import (\n+ decode_default,\n+ decode_time,\n+ decode_int,\n+ decode_mask,\n+ Mask8,\n+ Mask16,\n+ Mask32,\n+ Mask64,\n+ Mask128,\n+ IPMask,\n+ EthMask,\n+ decode_free_output,\n+ decode_flag,\n+ decode_nat,\n+)\n+\n+\n+class ODPFlow(Flow):\n+ def __init__(self, sections, raw=\"\", id_=None):\n+ \"\"\"Constructor\"\"\"\n+ super(ODPFlow, self).__init__(sections, raw, id_)\n+\n+ def __str__(self):\n+ if self._orig:\n+ return self._orig\n+ else:\n+ return self.to_string()\n+\n+ def to_string(self):\n+ \"\"\"Print a text representation of the flow\"\"\"\n+ string = \"Info: {}\\n\" + self.info\n+ string += \"Match : {}\\n\" + self.match\n+ string += \"Actions: {}\\n \" + self.actions\n+ return string\n+\n+\n+class ODPFlowFactory:\n+ \"\"\"Datapath Flow\"\"\"\n+\n+ def __init__(self):\n+ self.info_decoders = self._info_decoders()\n+ self.match_decoders = self._match_decoders()\n+ self.action_decoders = self._action_decoders()\n+\n+ def from_string(self, odp_string, id=None):\n+ \"\"\"Parse a odp flow string\n+\n+ The string is expected to have the follwoing format:\n+ [ufid], [match] [flow data] actions:[actions]\n+\n+ Args:\n+ odp_string (str): a datapath flow string\n+\n+ Returns:\n+ an ODPFlow instance\n+ \"\"\"\n+\n+ sections = []\n+\n+ # If UFID present, parse it and\n+ ufid_pos = odp_string.find(\"ufid:\")\n+ if ufid_pos >= 0:\n+ ufid_string = odp_string[\n+ ufid_pos : (odp_string[ufid_pos:].find(\",\") + 1)\n+ ]\n+ ufid_parser = KVParser(KVDecoders({\"ufid\": decode_default}))\n+ ufid_parser.parse(ufid_string)\n+ if len(ufid_parser.kv()) != 1:\n+ raise ValueError(\"malformed odp flow: %s\" % odp_string)\n+ sections.append(\n+ Section(\"ufid\", ufid_pos, ufid_string, ufid_parser.kv())\n+ )\n+\n+ action_pos = odp_string.find(\"actions:\")\n+ if action_pos < 0:\n+ raise ValueError(\"malformed odp flow: %s\" % odp_string)\n+\n+ # rest of the string is between ufid and actions\n+ rest = odp_string[\n+ (ufid_pos + len(ufid_string) if ufid_pos >= 0 else 0) : action_pos\n+ ]\n+\n+ action_pos += 8 # len(\"actions:\")\n+ actions = odp_string[action_pos:]\n+\n+ field_parts = rest.lstrip(\" \").partition(\" \")\n+\n+ if len(field_parts) != 3:\n+ raise ValueError(\"malformed odp flow: %s\" % odp_string)\n+\n+ match = field_parts[0]\n+ info = field_parts[2]\n+\n+ iparser = KVParser(KVDecoders(self.info_decoders))\n+ iparser.parse(info)\n+ isection = Section(\n+ name=\"info\",\n+ pos=odp_string.find(info),\n+ string=info,\n+ data=iparser.kv(),\n+ )\n+ sections.append(isection)\n+\n+ mparser = KVParser(KVDecoders(self.match_decoders))\n+ mparser.parse(match)\n+ msection = Section(\n+ name=\"match\",\n+ pos=odp_string.find(match),\n+ string=match,\n+ data=mparser.kv(),\n+ )\n+ sections.append(msection)\n+\n+ aparser = KVParser(\n+ KVDecoders(self.action_decoders, default_free=decode_free_output)\n+ )\n+ aparser.parse(actions)\n+ asection = Section(\n+ name=\"actions\",\n+ pos=action_pos,\n+ string=actions,\n+ data=aparser.kv(),\n+ is_list=True,\n+ )\n+ sections.append(asection)\n+\n+ return ODPFlow(sections, odp_string, id)\n+\n+ @classmethod\n+ def _action_decoders(cls):\n+ _decoders = {\n+ \"drop\": decode_flag,\n+ \"lb_output\": decode_int,\n+ \"trunc\": decode_int,\n+ \"recirc\": decode_int,\n+ \"userspace\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"pid\": decode_int,\n+ \"sFlow\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"vid\": decode_int,\n+ \"pcp\": decode_int,\n+ \"output\": decode_int,\n+ }\n+ )\n+ ),\n+ \"slow_path\": decode_default,\n+ \"flow_sample\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"probability\": decode_int,\n+ \"collector_sed_id\": decode_int,\n+ \"obs_domain_id\": decode_int,\n+ \"obs_point_id\": decode_int,\n+ \"output_port\": decode_default,\n+ \"ingress\": decode_flag,\n+ \"egress\": decode_flag,\n+ }\n+ )\n+ ),\n+ \"ipfix\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"output_port\": decode_default,\n+ }\n+ )\n+ ),\n+ \"controller\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"reason\": decode_int,\n+ \"dont_send\": decode_int,\n+ \"continuation\": decode_int,\n+ \"recirc_id\": decode_int,\n+ \"rule_cookie\": decode_int,\n+ \"controller_id\": decode_int,\n+ \"max_len\": decode_int,\n+ }\n+ )\n+ ),\n+ \"userdata\": decode_default,\n+ \"actions\": decode_flag,\n+ \"tunnel_out_port\": decode_int,\n+ \"push_eth\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": EthMask,\n+ \"dst\": EthMask,\n+ \"type\": decode_int,\n+ }\n+ )\n+ ),\n+ \"pop_eth\": decode_flag,\n+ }\n+ )\n+ ),\n+ \"set\": nested_kv_decoder(KVDecoders(cls._field_decoders())),\n+ \"push_vlan\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"vid\": decode_int,\n+ \"pcp\": decode_int,\n+ \"cfi\": decode_int,\n+ \"tpid\": decode_int,\n+ }\n+ )\n+ ),\n+ \"pop_vlan\": decode_flag,\n+ \"push_nsh\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"flags\": decode_int,\n+ \"ttl\": decode_int,\n+ \"mdtype\": decode_int,\n+ \"np\": decode_int,\n+ \"spi\": decode_int,\n+ \"si\": decode_int,\n+ \"c1\": decode_int,\n+ \"c2\": decode_int,\n+ \"c3\": decode_int,\n+ \"c4\": decode_int,\n+ \"md2\": decode_int,\n+ }\n+ )\n+ ),\n+ \"pop_nsh\": decode_flag,\n+ \"tnl_pop\": decode_int,\n+ \"ct_clear\": decode_flag,\n+ \"ct\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"commit\": decode_flag,\n+ \"force_commit\": decode_flag,\n+ \"zone\": decode_int,\n+ \"mark\": Mask32,\n+ \"label\": Mask128,\n+ \"helper\": decode_default,\n+ \"timeout\": decode_default,\n+ \"nat\": decode_nat,\n+ }\n+ )\n+ ),\n+ **cls._tnl_action_decoder(),\n+ }\n+\n+ _decoders[\"clone\"] = nested_kv_decoder(\n+ KVDecoders(decoders=_decoders, default_free=decode_free_output)\n+ )\n+\n+ return {\n+ **_decoders,\n+ \"sample\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"sample\": (lambda x: float(x.strip(\"%\"))),\n+ \"actions\": nested_kv_decoder(\n+ KVDecoders(\n+ decoders=_decoders,\n+ default_free=decode_free_output,\n+ )\n+ ),\n+ }\n+ )\n+ ),\n+ \"check_pkt_len\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"size\": decode_int,\n+ \"gt\": nested_kv_decoder(\n+ KVDecoders(\n+ decoders=_decoders,\n+ default_free=decode_free_output,\n+ )\n+ ),\n+ \"le\": nested_kv_decoder(\n+ KVDecoders(\n+ decoders=_decoders,\n+ default_free=decode_free_output,\n+ )\n+ ),\n+ }\n+ )\n+ ),\n+ }\n+\n+ @classmethod\n+ def _tnl_action_decoder(cls):\n+ return {\n+ \"tnl_push\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"tnl_port\": decode_int,\n+ \"header\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"size\": decode_int,\n+ \"type\": decode_int,\n+ \"eth\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": EthMask,\n+ \"dst\": EthMask,\n+ \"dl_type\": decode_int,\n+ }\n+ )\n+ ),\n+ \"ipv4\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": IPMask,\n+ \"dst\": IPMask,\n+ \"proto\": decode_int,\n+ \"tos\": decode_int,\n+ \"ttl\": decode_int,\n+ \"frag\": decode_int,\n+ }\n+ )\n+ ),\n+ \"ipv6\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": IPMask,\n+ \"dst\": IPMask,\n+ \"label\": decode_int,\n+ \"proto\": decode_int,\n+ \"tclass\": decode_int,\n+ \"hlimit\": decode_int,\n+ }\n+ )\n+ ),\n+ \"udp\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": decode_int,\n+ \"dst\": decode_int,\n+ \"dsum\": Mask16,\n+ }\n+ )\n+ ),\n+ \"vxlan\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"flags\": decode_int,\n+ \"vni\": decode_int,\n+ }\n+ )\n+ ),\n+ \"geneve\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"oam\": decode_flag,\n+ \"crit\": decode_flag,\n+ \"vni\": decode_int,\n+ \"options\": partial(\n+ decode_geneve, False\n+ ),\n+ }\n+ )\n+ ),\n+ \"gre\": decode_tnl_gre,\n+ \"erspan\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"ver\": decode_int,\n+ \"sid\": decode_int,\n+ \"idx\": decode_int,\n+ \"sid\": decode_int,\n+ \"dir\": decode_int,\n+ \"hwid\": decode_int,\n+ }\n+ )\n+ ),\n+ \"gtpu\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"flags\": decode_int,\n+ \"msgtype\": decode_int,\n+ \"teid\": decode_int,\n+ }\n+ )\n+ ),\n+ }\n+ )\n+ ),\n+ \"out_port\": decode_int,\n+ }\n+ )\n+ )\n+ }\n+\n+ @classmethod\n+ def _info_decoders(cls):\n+ return {\n+ \"packets\": decode_int,\n+ \"bytes\": decode_int,\n+ \"used\": decode_time,\n+ \"flags\": decode_default,\n+ \"dp\": decode_default,\n+ }\n+\n+ @classmethod\n+ def _match_decoders(cls):\n+ return {\n+ **cls._field_decoders(),\n+ \"encap\": nested_kv_decoder(KVDecoders(cls._field_decoders())),\n+ }\n+\n+ @classmethod\n+ def _field_decoders(cls):\n+ return {\n+ \"skb_priority\": Mask32,\n+ \"skb_mark\": Mask32,\n+ \"recirc_id\": decode_int,\n+ \"dp_hash\": Mask32,\n+ \"ct_state\": decode_default, # TODO: Parse flags\n+ \"ct_zone\": Mask16,\n+ \"ct_mark\": Mask32,\n+ \"ct_label\": Mask128,\n+ \"ct_tuple4\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": IPMask,\n+ \"dst\": IPMask,\n+ \"proto\": Mask8,\n+ \"tcp_src\": Mask16,\n+ \"tcp_dst\": Mask16,\n+ }\n+ )\n+ ),\n+ \"ct_tuple6\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": IPMask,\n+ \"dst\": IPMask,\n+ \"proto\": Mask8,\n+ \"tcp_src\": Mask16,\n+ \"tcp_dst\": Mask16,\n+ }\n+ )\n+ ),\n+ \"tunnel\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"tun_id\": Mask64,\n+ \"src\": IPMask,\n+ \"dst\": IPMask,\n+ \"ipv6_src\": IPMask,\n+ \"ipv6_dst\": IPMask,\n+ \"tos\": Mask8,\n+ \"ttl\": Mask8,\n+ \"tp_src\": Mask16,\n+ \"tp_dst\": Mask16,\n+ \"erspan\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"ver\": Mask8,\n+ \"idx\": Mask32,\n+ \"sid\": decode_int,\n+ \"dir\": Mask8,\n+ \"hwid\": Mask8,\n+ }\n+ )\n+ ),\n+ \"vxlan\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"gbp\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"id\": Mask16,\n+ \"flags\": Mask8,\n+ }\n+ )\n+ )\n+ }\n+ )\n+ ),\n+ \"geneve\": partial(decode_geneve, True),\n+ \"gtpu\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"flags\": Mask8,\n+ \"msgtype\": Mask8,\n+ }\n+ )\n+ ),\n+ \"flags\": decode_default,\n+ }\n+ )\n+ ),\n+ \"in_port\": decode_default,\n+ \"eth\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": EthMask,\n+ \"dst\": EthMask,\n+ }\n+ )\n+ ),\n+ \"vlan\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"vid\": Mask16,\n+ \"pcp\": Mask16,\n+ \"cfi\": Mask16,\n+ }\n+ )\n+ ),\n+ \"eth_type\": Mask16,\n+ \"mpls\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"label\": Mask32,\n+ \"tc\": Mask32,\n+ \"ttl\": Mask32,\n+ \"bos\": Mask32,\n+ }\n+ )\n+ ),\n+ \"ipv4\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": IPMask,\n+ \"dst\": IPMask,\n+ \"proto\": Mask8,\n+ \"tos\": Mask8,\n+ \"ttl\": Mask8,\n+ \"frag\": decode_default,\n+ }\n+ )\n+ ),\n+ \"ipv6\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": IPMask,\n+ \"dst\": IPMask,\n+ \"label\": decode_mask(20),\n+ \"proto\": Mask8,\n+ \"tclass\": Mask8,\n+ \"hlimit\": Mask8,\n+ \"frag\": decode_default,\n+ }\n+ )\n+ ),\n+ \"tcp\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": Mask16,\n+ \"dst\": Mask16,\n+ }\n+ )\n+ ),\n+ \"tcp_flags\": decode_default,\n+ \"udp\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": Mask16,\n+ \"dst\": Mask16,\n+ }\n+ )\n+ ),\n+ \"sctp\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"src\": Mask16,\n+ \"dst\": Mask16,\n+ }\n+ )\n+ ),\n+ \"icmp\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"type\": Mask8,\n+ \"code\": Mask8,\n+ }\n+ )\n+ ),\n+ \"icmpv6\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"type\": Mask8,\n+ \"code\": Mask8,\n+ }\n+ )\n+ ),\n+ \"arp\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"sip\": IPMask,\n+ \"tip\": IPMask,\n+ \"op\": Mask16,\n+ \"sha\": EthMask,\n+ \"tha\": EthMask,\n+ }\n+ )\n+ ),\n+ \"nd\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"target\": IPMask,\n+ \"sll\": EthMask,\n+ \"tll\": EthMask,\n+ }\n+ )\n+ ),\n+ \"nd_ext\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"nd_reserved\": Mask32,\n+ \"nd_options_type\": Mask8,\n+ }\n+ )\n+ ),\n+ \"packet_type\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"ns\": Mask16,\n+ \"id\": Mask16,\n+ }\n+ )\n+ ),\n+ \"nsh\": nested_kv_decoder(\n+ KVDecoders(\n+ {\n+ \"flags\": Mask8,\n+ \"mdtype\": Mask8,\n+ \"np\": Mask8,\n+ \"spi\": Mask32,\n+ \"si\": Mask8,\n+ \"c1\": Mask32,\n+ \"c2\": Mask32,\n+ \"c3\": Mask32,\n+ \"c4\": Mask32,\n+ }\n+ )\n+ ),\n+ }\n+\n+\n+def decode_geneve(mask, value):\n+ \"\"\"\n+ Decode geneve options. Used for both tnl_push(header(geneve(options())))\n+ action and tunnel(geneve()) match.\n+\n+ It has the following format:\n+\n+ {class=0xffff,type=0x80,len=4,0xa}\n+\n+ Args:\n+ mask (bool): Whether masking is supported\n+ value (str): The value to decode\n+ \"\"\"\n+ if mask:\n+ decoders = {\n+ \"class\": Mask16,\n+ \"type\": Mask8,\n+ \"len\": Mask8,\n+ }\n+\n+ def free_decoder(value):\n+ return \"data\", Mask128(value)\n+\n+ else:\n+ decoders = {\n+ \"class\": decode_int,\n+ \"type\": decode_int,\n+ \"len\": decode_int,\n+ }\n+\n+ def free_decoder(value):\n+ return \"data\", decode_int(value)\n+\n+ result = []\n+ for opts in re.findall(r\"{.*?}\", value):\n+ result.append(\n+ decode_nested_kv(\n+ KVDecoders(decoders=decoders, default_free=free_decoder),\n+ opts.strip(\"{}\"),\n+ )\n+ )\n+ return result\n+\n+\n+def decode_tnl_gre(value):\n+ \"\"\"\n+ Decode tnl_push(header(gre())) action\n+\n+ It has the following format:\n+\n+ gre((flags=0x2000,proto=0x6558),key=0x1e241))\n+\n+ Args:\n+ value (str): The value to decode\n+ \"\"\"\n+\n+ return decode_nested_kv(\n+ KVDecoders(\n+ {\n+ \"flags\": decode_int,\n+ \"proto\": decode_int,\n+ \"key\": decode_int,\n+ \"csum\": decode_int,\n+ \"seq\": decode_int,\n+ }\n+ ),\n+ value.replace(\"(\", \"\").replace(\")\", \"\"),\n+ )\n", "prefixes": [ "ovs-dev", "v1", "08/18" ] }