From patchwork Tue Aug 1 21:22:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aaron Conole X-Patchwork-Id: 13337271 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 479FFC00528 for ; Tue, 1 Aug 2023 21:23:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229464AbjHAVXS (ORCPT ); Tue, 1 Aug 2023 17:23:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43210 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230049AbjHAVXQ (ORCPT ); Tue, 1 Aug 2023 17:23:16 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D905EC3 for ; Tue, 1 Aug 2023 14:22:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1690924954; 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: in-reply-to:in-reply-to:references:references; bh=V3h+iNT4mvmkIIGok64mc70TwkHtZdOUP6TSavChIxE=; b=YAWP7LRvnlmTyQ3lHGPI/GB0+EBn+Pwd/TvJ0V5gbtTzPV7ETCyc1ZdGIuaFcjQOG9g8Y7 Lehj1i8bwYsezMH2tbKtFZAMGgDKJu1wS6rg2Kw861KOqIGWs0UR/X6xU8+GDoi8Jq1QXO oklbCu2VUceQGYHF8lmqYiL5RdE3I/A= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-18-d8l5lhmXP8W0TFDFFuSyMw-1; Tue, 01 Aug 2023 17:22:31 -0400 X-MC-Unique: d8l5lhmXP8W0TFDFFuSyMw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 661A0185A78B; Tue, 1 Aug 2023 21:22:30 +0000 (UTC) Received: from RHTPC1VM0NT.redhat.com (unknown [10.22.8.217]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5E266F7821; Tue, 1 Aug 2023 21:22:29 +0000 (UTC) From: Aaron Conole To: netdev@vger.kernel.org Cc: dev@openvswitch.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Shuah Khan , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Pravin B Shelar , Adrian Moreno , Ilya Maximets Subject: [PATCH v3 net-next 1/5] selftests: openvswitch: add an initial flow programming case Date: Tue, 1 Aug 2023 17:22:22 -0400 Message-Id: <20230801212226.909249-2-aconole@redhat.com> In-Reply-To: <20230801212226.909249-1-aconole@redhat.com> References: <20230801212226.909249-1-aconole@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org The openvswitch self-tests can test much of the control side of the module (ie: what a vswitchd implementation would process), but the actual packet forwarding cases aren't supported, making the testing of limited value. Add some flow parsing and an initial ARP based test case using arping utility. This lets us display flows, add some basic output flows with simple matches, and test against a known good forwarding case. Signed-off-by: Aaron Conole Reviewed-by: Adrian Moreno --- NOTE: 3 lines flag the line-length checkpatch warning, but there didn't seem to be a good way of breaking the lines smaller for 2 of them. The third would still flag, even if broken at what looks like a good point to break it. .../selftests/net/openvswitch/openvswitch.sh | 51 +++ .../selftests/net/openvswitch/ovs-dpctl.py | 407 ++++++++++++++++++ 2 files changed, 458 insertions(+) diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh index 3117a4be0cd04..5cdacb3c8c925 100755 --- a/tools/testing/selftests/net/openvswitch/openvswitch.sh +++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh @@ -11,6 +11,7 @@ VERBOSE=0 TRACING=0 tests=" + arp_ping eth-arp: Basic arp ping between two NS netlink_checks ovsnl: validate netlink attrs and settings upcall_interfaces ovs: test the upcall interfaces" @@ -127,6 +128,16 @@ ovs_add_netns_and_veths () { return 0 } +ovs_add_flow () { + info "Adding flow to DP: sbx:$1 br:$2 flow:$3 act:$4" + ovs_sbx "$1" python3 $ovs_base/ovs-dpctl.py add-flow "$2" "$3" "$4" + if [ $? -ne 0 ]; then + echo "Flow [ $3 : $4 ] failed" >> ${ovs_dir}/debug.log + return 1 + fi + return 0 +} + usage() { echo echo "$0 [OPTIONS] [TEST]..." @@ -141,6 +152,46 @@ usage() { exit 1 } +# arp_ping test +# - client has 1500 byte MTU +# - server has 1500 byte MTU +# - send ARP ping between two ns +test_arp_ping () { + + which arping >/dev/null 2>&1 || return $ksft_skip + + sbx_add "test_arp_ping" || return $? + + ovs_add_dp "test_arp_ping" arpping || return 1 + + info "create namespaces" + for ns in client server; do + ovs_add_netns_and_veths "test_arp_ping" "arpping" "$ns" \ + "${ns:0:1}0" "${ns:0:1}1" || return 1 + done + + # Setup client namespace + ip netns exec client ip addr add 172.31.110.10/24 dev c1 + ip netns exec client ip link set c1 up + HW_CLIENT=`ip netns exec client ip link show dev c1 | grep -E 'link/ether [0-9a-f:]+' | awk '{print $2;}'` + info "Client hwaddr: $HW_CLIENT" + + # Setup server namespace + ip netns exec server ip addr add 172.31.110.20/24 dev s1 + ip netns exec server ip link set s1 up + HW_SERVER=`ip netns exec server ip link show dev s1 | grep -E 'link/ether [0-9a-f:]+' | awk '{print $2;}'` + info "Server hwaddr: $HW_SERVER" + + ovs_add_flow "test_arp_ping" arpping \ + "in_port(1),eth(),eth_type(0x0806),arp(sip=172.31.110.10,tip=172.31.110.20,sha=$HW_CLIENT,tha=ff:ff:ff:ff:ff:ff)" '2' || return 1 + ovs_add_flow "test_arp_ping" arpping \ + "in_port(2),eth(),eth_type(0x0806),arp()" '1' || return 1 + + ovs_sbx "test_arp_ping" ip netns exec client arping -I c1 172.31.110.20 -c 1 || return 1 + + return 0 +} + # netlink_validation # - Create a dp # - check no warning with "old version" simulation diff --git a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py index 1c8b36bc15d48..27e15c636456e 100644 --- a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py +++ b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py @@ -9,9 +9,12 @@ import errno import ipaddress import logging import multiprocessing +import re import struct import sys import time +import types +import uuid try: from pyroute2 import NDB @@ -59,6 +62,104 @@ def macstr(mac): return outstr +def strspn(str1, str2): + tot = 0 + for char in str1: + if str2.find(char) == -1: + return tot + tot += 1 + return tot + + +def intparse(statestr, defmask="0xffffffff"): + totalparse = strspn(statestr, "0123456789abcdefABCDEFx/") + # scan until "/" + count = strspn(statestr, "x0123456789abcdefABCDEF") + + firstnum = statestr[:count] + if firstnum[-1] == "/": + firstnum = firstnum[:-1] + k = int(firstnum, 0) + + m = None + if defmask is not None: + secondnum = defmask + if statestr[count] == "/": + secondnum = statestr[count + 1 :] # this is wrong... + m = int(secondnum, 0) + + return statestr[totalparse + 1 :], k, m + + +def parse_flags(flag_str, flag_vals): + bitResult = 0 + maskResult = 0 + + if len(flag_str) == 0: + return flag_str, bitResult, maskResult + + if flag_str[0].isdigit(): + idx = 0 + while flag_str[idx].isdigit() or flag_str[idx] == "x": + idx += 1 + digits = flag_str[:idx] + flag_str = flag_str[idx:] + + bitResult = int(digits, 0) + maskResult = int(digits, 0) + + while len(flag_str) > 0 and (flag_str[0] == "+" or flag_str[0] == "-"): + if flag_str[0] == "+": + setFlag = True + elif flag_str[0] == "-": + setFlag = False + + flag_str = flag_str[1:] + + flag_len = 0 + while ( + flag_str[flag_len] != "+" + and flag_str[flag_len] != "-" + and flag_str[flag_len] != "," + and flag_str[flag_len] != ")" + ): + flag_len += 1 + + flag = flag_str[0:flag_len] + + if flag in flag_vals: + if maskResult & flag_vals[flag]: + raise KeyError( + "Flag %s set once, cannot be set in multiples" % flag + ) + + if setFlag: + bitResult |= flag_vals[flag] + + maskResult |= flag_vals[flag] + else: + raise KeyError("Missing flag value: %s" % flag) + + flag_str = flag_str[flag_len:] + + return flag_str, bitResult, maskResult + + +def parse_ct_state(statestr): + ct_flags = { + "new": 1 << 0, + "est": 1 << 1, + "rel": 1 << 2, + "rpl": 1 << 3, + "inv": 1 << 4, + "trk": 1 << 5, + "snat": 1 << 6, + "dnat": 1 << 7, + } + + return parse_flags(statestr, ct_flags) + + def convert_mac(mac_str, mask=False): if mac_str is None or mac_str == "": mac_str = "00:00:00:00:00:00" @@ -79,6 +180,62 @@ def convert_ipv4(ip, mask=False): return int(ipaddress.IPv4Address(ip)) +def parse_starts_block(block_str, scanstr, returnskipped, scanregex=False): + if scanregex: + m = re.search(scanstr, block_str) + if m is None: + if returnskipped: + return block_str + return False + if returnskipped: + block_str = block_str[len(m.group(0)) :] + return block_str + return True + + if block_str.startswith(scanstr): + if returnskipped: + block_str = block_str[len(scanstr) :] + else: + return True + + if returnskipped: + return block_str + + return False + + +def parse_extract_field( + block_str, fieldstr, scanfmt, convert, masked=False, defval=None +): + if fieldstr and not block_str.startswith(fieldstr): + return block_str, defval + + if fieldstr: + str_skiplen = len(fieldstr) + str_skipped = block_str[str_skiplen:] + if str_skiplen == 0: + return str_skipped, defval + else: + str_skiplen = 0 + str_skipped = block_str + + m = re.search(scanfmt, str_skipped) + if m is None: + raise ValueError("Bad fmt string") + + data = m.group(0) + if convert: + data = convert(m.group(0)) + + str_skipped = str_skipped[len(m.group(0)) :] + if masked: + if str_skipped[0] == "/": + raise ValueError("Masking support TBD...") + + str_skipped = str_skipped[strspn(str_skipped, ", ") :] + return str_skipped, data + + class ovs_dp_msg(genlmsg): # include the OVS version # We need a custom header rather than just being able to rely on @@ -278,6 +435,50 @@ class ovsactions(nla): return print_str + def parse(self, actstr): + while len(actstr) != 0: + parsed = False + if actstr.startswith("drop"): + # for now, drops have no explicit action, so we + # don't need to set any attributes. The final + # act of the processing chain will just drop the packet + return + + elif parse_starts_block(actstr, "^(\d+)", False, True): + actstr, output = parse_extract_field( + actstr, None, "(\d+)", lambda x: int(x), False, "0" + ) + self["attrs"].append(["OVS_ACTION_ATTR_OUTPUT", output]) + parsed = True + elif parse_starts_block(actstr, "recirc(", False): + actstr, recircid = parse_extract_field( + actstr, + "recirc(", + "([0-9a-fA-Fx]+)", + lambda x: int(x, 0), + False, + 0, + ) + self["attrs"].append(["OVS_ACTION_ATTR_RECIRC", recircid]) + parsed = True + + parse_flat_map = ( + ("ct_clear", "OVS_ACTION_ATTR_CT_CLEAR"), + ("pop_vlan", "OVS_ACTION_ATTR_POP_VLAN"), + ("pop_eth", "OVS_ACTION_ATTR_POP_ETH"), + ("pop_nsh", "OVS_ACTION_ATTR_POP_NSH"), + ) + + for flat_act in parse_flat_map: + if parse_starts_block(actstr, flat_act[0], False): + actstr += len(flat_act[0]) + self["attrs"].append([flat_act[1]]) + actstr = actstr[strspn(actstr, ", ") :] + parsed = True + + if not parsed: + raise ValueError("Action str: '%s' not supported" % actstr) + class ovskey(nla): nla_flags = NLA_F_NESTED @@ -347,6 +548,53 @@ class ovskey(nla): init=init, ) + def parse(self, flowstr, typeInst): + if not flowstr.startswith(self.proto_str): + return None, None + + k = typeInst() + m = typeInst() + + flowstr = flowstr[len(self.proto_str) :] + if flowstr.startswith("("): + flowstr = flowstr[1:] + + keybits = b"" + maskbits = b"" + for f in self.fields_map: + if flowstr.startswith(f[1]): + # the following assumes that the field looks + # something like 'field.' where '.' is a + # character that we don't exactly care about. + flowstr = flowstr[len(f[1]) + 1 :] + splitchar = 0 + for c in flowstr: + if c == "," or c == ")": + break + splitchar += 1 + data = flowstr[:splitchar] + flowstr = flowstr[splitchar:] + else: + data = None + + if len(f) > 4: + func = f[4] + else: + func = f[3] + k[f[0]] = func(data) + if len(f) > 4: + m[f[0]] = func(data, True) + else: + m[f[0]] = func(data) + + flowstr = flowstr[strspn(flowstr, ", ") :] + if len(flowstr) == 0: + return flowstr, k, m + + flowstr = flowstr[strspn(flowstr, "), ") :] + + return flowstr, k, m + def dpstr(self, masked=None, more=False): outstr = self.proto_str + "(" first = False @@ -810,6 +1058,71 @@ class ovskey(nla): class ovs_key_mpls(nla): fields = (("lse", ">I"),) + def parse(self, flowstr, mask=None): + for field in ( + ("OVS_KEY_ATTR_PRIORITY", "skb_priority", intparse), + ("OVS_KEY_ATTR_SKB_MARK", "skb_mark", intparse), + ("OVS_KEY_ATTR_RECIRC_ID", "recirc_id", intparse), + ("OVS_KEY_ATTR_DP_HASH", "dp_hash", intparse), + ("OVS_KEY_ATTR_CT_STATE", "ct_state", parse_ct_state), + ("OVS_KEY_ATTR_CT_ZONE", "ct_zone", intparse), + ("OVS_KEY_ATTR_CT_MARK", "ct_mark", intparse), + ("OVS_KEY_ATTR_IN_PORT", "in_port", intparse), + ( + "OVS_KEY_ATTR_ETHERNET", + "eth", + ovskey.ethaddr, + ), + ( + "OVS_KEY_ATTR_ETHERTYPE", + "eth_type", + lambda x: intparse(x, "0xffff"), + ), + ( + "OVS_KEY_ATTR_IPV4", + "ipv4", + ovskey.ovs_key_ipv4, + ), + ( + "OVS_KEY_ATTR_IPV6", + "ipv6", + ovskey.ovs_key_ipv6, + ), + ( + "OVS_KEY_ATTR_ARP", + "arp", + ovskey.ovs_key_arp, + ), + ( + "OVS_KEY_ATTR_TCP", + "tcp", + ovskey.ovs_key_tcp, + ), + ( + "OVS_KEY_ATTR_TCP_FLAGS", + "tcp_flags", + lambda x: parse_flags(x, None), + ), + ): + fld = field[1] + "(" + if not flowstr.startswith(fld): + continue + + if not isinstance(field[2], types.FunctionType): + nk = field[2]() + flowstr, k, m = nk.parse(flowstr, field[2]) + else: + flowstr = flowstr[len(fld) :] + flowstr, k, m = field[2](flowstr) + + if m and mask is not None: + mask["attrs"].append([field[0], m]) + self["attrs"].append([field[0], k]) + + flowstr = flowstr[strspn(flowstr, "),") :] + + return flowstr + def dpstr(self, mask=None, more=False): print_str = "" @@ -1358,11 +1671,92 @@ class OvsFlow(GenericNetlinkSocket): return print_str + def parse(self, flowstr, actstr, dpidx=0): + OVS_UFID_F_OMIT_KEY = 1 << 0 + OVS_UFID_F_OMIT_MASK = 1 << 1 + OVS_UFID_F_OMIT_ACTIONS = 1 << 2 + + self["cmd"] = 0 + self["version"] = 0 + self["reserved"] = 0 + self["dpifindex"] = 0 + + if flowstr.startswith("ufid:"): + count = 5 + while flowstr[count] != ",": + count += 1 + ufidstr = flowstr[5:count] + flowstr = flowstr[count + 1 :] + else: + ufidstr = str(uuid.uuid4()) + uuidRawObj = uuid.UUID(ufidstr).fields + + self["attrs"].append( + [ + "OVS_FLOW_ATTR_UFID", + [ + uuidRawObj[0], + uuidRawObj[1] << 16 | uuidRawObj[2], + uuidRawObj[3] << 24 + | uuidRawObj[4] << 16 + | uuidRawObj[5] & (0xFF << 32) >> 32, + uuidRawObj[5] & (0xFFFFFFFF), + ], + ] + ) + self["attrs"].append( + [ + "OVS_FLOW_ATTR_UFID_FLAGS", + int( + OVS_UFID_F_OMIT_KEY + | OVS_UFID_F_OMIT_MASK + | OVS_UFID_F_OMIT_ACTIONS + ), + ] + ) + + k = ovskey() + m = ovskey() + k.parse(flowstr, m) + self["attrs"].append(["OVS_FLOW_ATTR_KEY", k]) + self["attrs"].append(["OVS_FLOW_ATTR_MASK", m]) + + a = ovsactions() + a.parse(actstr) + self["attrs"].append(["OVS_FLOW_ATTR_ACTIONS", a]) + def __init__(self): GenericNetlinkSocket.__init__(self) self.bind(OVS_FLOW_FAMILY, OvsFlow.ovs_flow_msg) + def add_flow(self, dpifindex, flowmsg): + """ + Send a new flow message to the kernel. + + dpifindex should be a valid datapath obtained by calling + into the OvsDatapath lookup + + flowmsg is a flow object obtained by calling a dpparse + """ + + flowmsg["cmd"] = OVS_FLOW_CMD_NEW + flowmsg["version"] = OVS_DATAPATH_VERSION + flowmsg["reserved"] = 0 + flowmsg["dpifindex"] = dpifindex + + try: + reply = self.nlm_request( + flowmsg, + msg_type=self.prid, + msg_flags=NLM_F_REQUEST | NLM_F_ACK, + ) + reply = reply[0] + except NetlinkError as ne: + print(flowmsg) + raise ne + return reply + def dump(self, dpifindex, flowspec=None): """ Returns a list of messages containing flows. @@ -1514,6 +1908,11 @@ def main(argv): dumpflcmd = subparsers.add_parser("dump-flows") dumpflcmd.add_argument("dumpdp", help="Datapath Name") + addflcmd = subparsers.add_parser("add-flow") + addflcmd.add_argument("flbr", help="Datapath name") + addflcmd.add_argument("flow", help="Flow specification") + addflcmd.add_argument("acts", help="Flow actions") + args = parser.parse_args() if args.verbose > 0: @@ -1589,6 +1988,14 @@ def main(argv): rep = ovsflow.dump(rep["dpifindex"]) for flow in rep: print(flow.dpstr(True if args.verbose > 0 else False)) + elif hasattr(args, "flbr"): + rep = ovsdp.info(args.flbr, 0) + if rep is None: + print("DP '%s' not found." % args.flbr) + return 1 + flow = OvsFlow.ovs_flow_msg() + flow.parse(args.flow, args.acts, rep["dpifindex"]) + ovsflow.add_flow(rep["dpifindex"], flow) return 0 From patchwork Tue Aug 1 21:22:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aaron Conole X-Patchwork-Id: 13337270 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org 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To: netdev@vger.kernel.org Cc: dev@openvswitch.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Shuah Khan , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Pravin B Shelar , Adrian Moreno , Ilya Maximets Subject: [PATCH v3 net-next 2/5] selftests: openvswitch: support key masks Date: Tue, 1 Aug 2023 17:22:23 -0400 Message-Id: <20230801212226.909249-3-aconole@redhat.com> In-Reply-To: <20230801212226.909249-1-aconole@redhat.com> References: <20230801212226.909249-1-aconole@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Adrian Moreno The default value for the mask actually depends on the value (e.g: if the value is non-null, the default is full-mask), so change the convert functions to accept the full, possibly masked string and let them figure out how to parse the different values. Also, implement size-aware int parsing. With this patch we can now express flows such as the following: "eth(src=0a:ca:fe:ca:fe:0a/ff:ff:00:00:ff:00)" "eth(src=0a:ca:fe:ca:fe:0a)" -> mask = ff:ff:ff:ff:ff:ff "ipv4(src=192.168.1.1)" -> mask = 255.255.255.255 "ipv4(src=192.168.1.1/24)" "ipv4(src=192.168.1.1/255.255.255.0)" "tcp(src=8080)" -> mask = 0xffff "tcp(src=8080/0xf0f0)" Signed-off-by: Adrian Moreno Acked-by: Aaron Conole --- .../selftests/net/openvswitch/ovs-dpctl.py | 96 ++++++++++++------- 1 file changed, 64 insertions(+), 32 deletions(-) diff --git a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py index 27e15c636456e..a9b8f52f6bfea 100644 --- a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py +++ b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py @@ -160,25 +160,45 @@ def parse_ct_state(statestr): return parse_flags(statestr, ct_flags) -def convert_mac(mac_str, mask=False): - if mac_str is None or mac_str == "": - mac_str = "00:00:00:00:00:00" - if mask is True and mac_str != "00:00:00:00:00:00": - mac_str = "FF:FF:FF:FF:FF:FF" - mac_split = mac_str.split(":") - ret = bytearray([int(i, 16) for i in mac_split]) - return bytes(ret) +def convert_mac(data): + def to_bytes(mac): + mac_split = mac.split(":") + ret = bytearray([int(i, 16) for i in mac_split]) + return bytes(ret) + mac_str, _, mask_str = data.partition('/') -def convert_ipv4(ip, mask=False): - if ip is None: - ip = 0 - if mask is True: - if ip != 0: - ip = int(ipaddress.IPv4Address(ip)) & 0xFFFFFFFF + if not mac_str: + mac_str = mask_str = "00:00:00:00:00:00" + elif not mask_str: + mask_str = "FF:FF:FF:FF:FF:FF" - return int(ipaddress.IPv4Address(ip)) + return to_bytes(mac_str), to_bytes(mask_str) +def convert_ipv4(data): + ip, _, mask = data.partition('/') + + if not ip: + ip = mask = 0 + elif not mask: + mask = 0xFFFFFFFF + elif mask.isdigit(): + mask = (0xFFFFFFFF << (32 - int(mask))) & 0xFFFFFFFF + + return int(ipaddress.IPv4Address(ip)), int(ipaddress.IPv4Address(mask)) + +def convert_int(size): + def convert_int_sized(data): + value, _, mask = data.partition('/') + + if not value: + return 0, 0 + elif not mask: + return int(value, 0), pow(2, size) - 1 + else: + return int(value, 0), int(mask, 0) + + return convert_int_sized def parse_starts_block(block_str, scanstr, returnskipped, scanregex=False): if scanregex: @@ -525,8 +545,10 @@ class ovskey(nla): ) fields_map = ( - ("src", "src", "%d", lambda x: int(x) if x is not None else 0), - ("dst", "dst", "%d", lambda x: int(x) if x is not None else 0), + ("src", "src", "%d", lambda x: int(x) if x else 0, + convert_int(16)), + ("dst", "dst", "%d", lambda x: int(x) if x else 0, + convert_int(16)), ) def __init__( @@ -575,17 +597,13 @@ class ovskey(nla): data = flowstr[:splitchar] flowstr = flowstr[splitchar:] else: - data = None + data = "" if len(f) > 4: - func = f[4] - else: - func = f[3] - k[f[0]] = func(data) - if len(f) > 4: - m[f[0]] = func(data, True) + k[f[0]], m[f[0]] = f[4](data) else: - m[f[0]] = func(data) + k[f[0]] = f[3](data) + m[f[0]] = f[3](data) flowstr = flowstr[strspn(flowstr, ", ") :] if len(flowstr) == 0: @@ -689,10 +707,14 @@ class ovskey(nla): int, convert_ipv4, ), - ("proto", "proto", "%d", lambda x: int(x) if x is not None else 0), - ("tos", "tos", "%d", lambda x: int(x) if x is not None else 0), - ("ttl", "ttl", "%d", lambda x: int(x) if x is not None else 0), - ("frag", "frag", "%d", lambda x: int(x) if x is not None else 0), + ("proto", "proto", "%d", lambda x: int(x) if x else 0, + convert_int(8)), + ("tos", "tos", "%d", lambda x: int(x) if x else 0, + convert_int(8)), + ("ttl", "ttl", "%d", lambda x: int(x) if x else 0, + convert_int(8)), + ("frag", "frag", "%d", lambda x: int(x) if x else 0, + convert_int(8)), ) def __init__( @@ -828,8 +850,8 @@ class ovskey(nla): ) fields_map = ( - ("type", "type", "%d", int), - ("code", "code", "%d", int), + ("type", "type", "%d", lambda x: int(x) if x else 0), + ("code", "code", "%d", lambda x: int(x) if x else 0), ) def __init__( @@ -894,7 +916,7 @@ class ovskey(nla): int, convert_ipv4, ), - ("op", "op", "%d", lambda x: int(x) if x is not None else 0), + ("op", "op", "%d", lambda x: int(x) if x else 0), ( "sha", "sha", @@ -1098,6 +1120,16 @@ class ovskey(nla): "tcp", ovskey.ovs_key_tcp, ), + ( + "OVS_KEY_ATTR_UDP", + "udp", + ovskey.ovs_key_udp, + ), + ( + "OVS_KEY_ATTR_ICMP", + "icmp", + ovskey.ovs_key_icmp, + ), ( "OVS_KEY_ATTR_TCP_FLAGS", "tcp_flags", From patchwork Tue Aug 1 21:22:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aaron Conole X-Patchwork-Id: 13337272 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1C64DC00528 for ; Tue, 1 Aug 2023 21:24:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232021AbjHAVYF (ORCPT ); Tue, 1 Aug 2023 17:24:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43322 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231752AbjHAVYC (ORCPT ); Tue, 1 Aug 2023 17:24:02 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1CA481708 for ; Tue, 1 Aug 2023 14:22:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; 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Tue, 1 Aug 2023 21:22:32 +0000 (UTC) Received: from RHTPC1VM0NT.redhat.com (unknown [10.22.8.217]) by smtp.corp.redhat.com (Postfix) with ESMTP id 49AF4F7855; Tue, 1 Aug 2023 21:22:31 +0000 (UTC) From: Aaron Conole To: netdev@vger.kernel.org Cc: dev@openvswitch.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Shuah Khan , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Pravin B Shelar , Adrian Moreno , Ilya Maximets Subject: [PATCH v3 net-next 3/5] selftests: openvswitch: add a test for ipv4 forwarding Date: Tue, 1 Aug 2023 17:22:24 -0400 Message-Id: <20230801212226.909249-4-aconole@redhat.com> In-Reply-To: <20230801212226.909249-1-aconole@redhat.com> References: <20230801212226.909249-1-aconole@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org This is a simple ipv4 bidirectional connectivity test. Signed-off-by: Aaron Conole Reviewed-by: Adrian Moreno --- NOTE: 4 lines flag the line-length checkpatch warning, but there didn't seem to be a good way of breaking the lines smaller. .../selftests/net/openvswitch/openvswitch.sh | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh index 5cdacb3c8c925..5d60a9466dab3 100755 --- a/tools/testing/selftests/net/openvswitch/openvswitch.sh +++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh @@ -12,6 +12,7 @@ TRACING=0 tests=" arp_ping eth-arp: Basic arp ping between two NS + connect_v4 ip4-xon: Basic ipv4 ping between two NS netlink_checks ovsnl: validate netlink attrs and settings upcall_interfaces ovs: test the upcall interfaces" @@ -192,6 +193,45 @@ test_arp_ping () { return 0 } +# connect_v4 test +# - client has 1500 byte MTU +# - server has 1500 byte MTU +# - use ICMP to ping in each direction +test_connect_v4 () { + + sbx_add "test_connect_v4" || return $? + + ovs_add_dp "test_connect_v4" cv4 || return 1 + + info "create namespaces" + for ns in client server; do + ovs_add_netns_and_veths "test_connect_v4" "cv4" "$ns" \ + "${ns:0:1}0" "${ns:0:1}1" || return 1 + done + + + ip netns exec client ip addr add 172.31.110.10/24 dev c1 + ip netns exec client ip link set c1 up + ip netns exec server ip addr add 172.31.110.20/24 dev s1 + ip netns exec server ip link set s1 up + + # Add forwarding for ARP and ip packets - completely wildcarded + ovs_add_flow "test_connect_v4" cv4 \ + 'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1 + ovs_add_flow "test_connect_v4" cv4 \ + 'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1 + ovs_add_flow "test_connect_v4" cv4 \ + 'in_port(1),eth(),eth_type(0x0800),ipv4(src=172.31.110.10)' '2' || return 1 + ovs_add_flow "test_connect_v4" cv4 \ + 'in_port(2),eth(),eth_type(0x0800),ipv4(src=172.31.110.20)' '1' || return 1 + + # do a ping + ovs_sbx "test_connect_v4" ip netns exec client ping 172.31.110.20 -c 3 || return 1 + + info "done..." + return 0 +} + # netlink_validation # - Create a dp # - check no warning with "old version" simulation From patchwork Tue Aug 1 21:22:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aaron Conole X-Patchwork-Id: 13337274 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8E6AC04E69 for ; Tue, 1 Aug 2023 21:24:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231493AbjHAVYH (ORCPT ); Tue, 1 Aug 2023 17:24:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231895AbjHAVYD (ORCPT ); Tue, 1 Aug 2023 17:24:03 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D44B21FFC for ; Tue, 1 Aug 2023 14:22:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1690924957; 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: in-reply-to:in-reply-to:references:references; bh=GpPfadaa/x3+NaAstU8Xs3T6973buVaWMEtiH3s12N0=; b=dYfhJbIw8EImouTho7sDIWDIvvYYe8oynGc9+P5VoIbfTT7f3PhwB25fTgr0v5Ja38/KtS 3qSRrESL5rU8lfIt+F+Qo/YxsVgTvCl4DeKTepAVr9erOBKInCVPocotJGHTNM/K9LPynG MokupU2l4hRsLlWac7mWljQGkLUD2MI= Received: from mimecast-mx02.redhat.com (66.187.233.73 [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-125-pubLFphlOnyQQXPTpKWZyA-1; Tue, 01 Aug 2023 17:22:34 -0400 X-MC-Unique: pubLFphlOnyQQXPTpKWZyA-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 61D613813F30; Tue, 1 Aug 2023 21:22:33 +0000 (UTC) Received: from RHTPC1VM0NT.redhat.com (unknown [10.22.8.217]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7E557F7FA4; Tue, 1 Aug 2023 21:22:32 +0000 (UTC) From: Aaron Conole To: netdev@vger.kernel.org Cc: dev@openvswitch.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Shuah Khan , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Pravin B Shelar , Adrian Moreno , Ilya Maximets Subject: [PATCH v3 net-next 4/5] selftests: openvswitch: add basic ct test case parsing Date: Tue, 1 Aug 2023 17:22:25 -0400 Message-Id: <20230801212226.909249-5-aconole@redhat.com> In-Reply-To: <20230801212226.909249-1-aconole@redhat.com> References: <20230801212226.909249-1-aconole@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Forwarding via ct() action is an important use case for openvswitch, but generally would require using a full ovs-vswitchd to get working. Add a ct action parser for basic ct test case. Signed-off-by: Aaron Conole Reviewed-by: Adrian Moreno --- NOTE: A number of lines flag the line-length checkpatch warning, but there didnt seem to be a really good way of breaking the lines smaller. .../selftests/net/openvswitch/openvswitch.sh | 68 +++++++++++++++++++ .../selftests/net/openvswitch/ovs-dpctl.py | 39 +++++++++++ 2 files changed, 107 insertions(+) diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh index 5d60a9466dab3..40a66c72af0f0 100755 --- a/tools/testing/selftests/net/openvswitch/openvswitch.sh +++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh @@ -12,6 +12,7 @@ TRACING=0 tests=" arp_ping eth-arp: Basic arp ping between two NS + ct_connect_v4 ip4-ct-xon: Basic ipv4 tcp connection using ct connect_v4 ip4-xon: Basic ipv4 ping between two NS netlink_checks ovsnl: validate netlink attrs and settings upcall_interfaces ovs: test the upcall interfaces" @@ -193,6 +194,73 @@ test_arp_ping () { return 0 } +# ct_connect_v4 test +# - client has 1500 byte MTU +# - server has 1500 byte MTU +# - use ICMP to ping in each direction +# - only allow CT state stuff to pass through new in c -> s +test_ct_connect_v4 () { + + which nc >/dev/null 2>/dev/null || return $ksft_skip + + sbx_add "test_ct_connect_v4" || return $? + + ovs_add_dp "test_ct_connect_v4" ct4 || return 1 + info "create namespaces" + for ns in client server; do + ovs_add_netns_and_veths "test_ct_connect_v4" "ct4" "$ns" \ + "${ns:0:1}0" "${ns:0:1}1" || return 1 + done + + ip netns exec client ip addr add 172.31.110.10/24 dev c1 + ip netns exec client ip link set c1 up + ip netns exec server ip addr add 172.31.110.20/24 dev s1 + ip netns exec server ip link set s1 up + + # Add forwarding for ARP and ip packets - completely wildcarded + ovs_add_flow "test_ct_connect_v4" ct4 \ + 'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1 + ovs_add_flow "test_ct_connect_v4" ct4 \ + 'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1 + ovs_add_flow "test_ct_connect_v4" ct4 \ + 'ct_state(-trk),eth(),eth_type(0x0800),ipv4()' \ + 'ct(commit),recirc(0x1)' || return 1 + ovs_add_flow "test_ct_connect_v4" ct4 \ + 'recirc_id(0x1),ct_state(+trk+new),in_port(1),eth(),eth_type(0x0800),ipv4(src=172.31.110.10)' \ + '2' || return 1 + ovs_add_flow "test_ct_connect_v4" ct4 \ + 'recirc_id(0x1),ct_state(+trk+est),in_port(1),eth(),eth_type(0x0800),ipv4(src=172.31.110.10)' \ + '2' || return 1 + ovs_add_flow "test_ct_connect_v4" ct4 \ + 'recirc_id(0x1),ct_state(+trk+est),in_port(2),eth(),eth_type(0x0800),ipv4(dst=172.31.110.10)' \ + '1' || return 1 + ovs_add_flow "test_ct_connect_v4" ct4 \ + 'recirc_id(0x1),ct_state(+trk+inv),eth(),eth_type(0x0800),ipv4()' 'drop' || \ + return 1 + + # do a ping + ovs_sbx "test_ct_connect_v4" ip netns exec client ping 172.31.110.20 -c 3 || return 1 + + # create an echo server in 'server' + echo "server" | \ + ovs_netns_spawn_daemon "test_ct_connect_v4" "server" \ + nc -lvnp 4443 + ovs_sbx "test_ct_connect_v4" ip netns exec client nc -i 1 -zv 172.31.110.20 4443 || return 1 + + # Now test in the other direction (should fail) + echo "client" | \ + ovs_netns_spawn_daemon "test_ct_connect_v4" "client" \ + nc -lvnp 4443 + ovs_sbx "test_ct_connect_v4" ip netns exec client nc -i 1 -zv 172.31.110.10 4443 + if [ $? == 0 ]; then + info "ct connect to client was successful" + return 1 + fi + + info "done..." + return 0 +} + # connect_v4 test # - client has 1500 byte MTU # - server has 1500 byte MTU diff --git a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py index a9b8f52f6bfea..1a3dc3762361b 100644 --- a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py +++ b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py @@ -62,6 +62,15 @@ def macstr(mac): return outstr +def strcspn(str1, str2): + tot = 0 + for char in str1: + if str2.find(char) != -1: + return tot + tot += 1 + return tot + + def strspn(str1, str2): tot = 0 for char in str1: @@ -496,6 +505,36 @@ class ovsactions(nla): actstr = actstr[strspn(actstr, ", ") :] parsed = True + if parse_starts_block(actstr, "ct(", False): + actstr = actstr[len("ct(") :] + ctact = ovsactions.ctact() + + for scan in ( + ("commit", "OVS_CT_ATTR_COMMIT", None), + ("force_commit", "OVS_CT_ATTR_FORCE_COMMIT", None), + ("zone", "OVS_CT_ATTR_ZONE", int), + ("mark", "OVS_CT_ATTR_MARK", int), + ("helper", "OVS_CT_ATTR_HELPER", lambda x, y: str(x)), + ("timeout", "OVS_CT_ATTR_TIMEOUT", lambda x, y: str(x)), + ): + if actstr.startswith(scan[0]): + actstr = actstr[len(scan[0]) :] + if scan[2] is not None: + if actstr[0] != "=": + raise ValueError("Invalid ct attr") + actstr = actstr[1:] + pos = strcspn(actstr, ",)") + datum = scan[2](actstr[:pos], 0) + ctact["attrs"].append([scan[1], datum]) + actstr = actstr[pos:] + else: + ctact["attrs"].append([scan[1], None]) + actstr = actstr[strspn(actstr, ", ") :] + + self["attrs"].append(["OVS_ACTION_ATTR_CT", ctact]) + parsed = True + + actstr = actstr[strspn(actstr, "), ") :] if not parsed: raise ValueError("Action str: '%s' not supported" % actstr) From patchwork Tue Aug 1 21:22:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aaron Conole X-Patchwork-Id: 13337273 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AAA76C04A94 for ; Tue, 1 Aug 2023 21:24:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232125AbjHAVYG (ORCPT ); Tue, 1 Aug 2023 17:24:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43326 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231835AbjHAVYD (ORCPT ); Tue, 1 Aug 2023 17:24:03 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8CCCB1FF0 for ; Tue, 1 Aug 2023 14:22:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1690924956; 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: in-reply-to:in-reply-to:references:references; bh=eYqdHelAg+Y9GxdM3IpvzrOpMzKsrys8Pu67uTzBqfw=; b=BLK/aGcSiuG9WCQM2uLzKi+TG2A4GW/Yyve8IvDAYNilPit3pYKnucrzumRHXE/6i/9bXV JcyA7DqhSfpg/efsB2FVAfqo//J/4pyQBtbQDPy8fL1a0lfsLS3YwL132a2+IxQSCzaquO 6MFtFox15k8iihYiA7pxtKCTThewia0= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-216-6gWPoaigMLGOvPYJ1GzkZA-1; Tue, 01 Aug 2023 17:22:34 -0400 X-MC-Unique: 6gWPoaigMLGOvPYJ1GzkZA-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 17FC58030AC; Tue, 1 Aug 2023 21:22:34 +0000 (UTC) Received: from RHTPC1VM0NT.redhat.com (unknown [10.22.8.217]) by smtp.corp.redhat.com (Postfix) with ESMTP id 86044F7821; Tue, 1 Aug 2023 21:22:33 +0000 (UTC) From: Aaron Conole To: netdev@vger.kernel.org Cc: dev@openvswitch.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Shuah Khan , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Pravin B Shelar , Adrian Moreno , Ilya Maximets Subject: [PATCH v3 net-next 5/5] selftests: openvswitch: add ct-nat test case with ipv4 Date: Tue, 1 Aug 2023 17:22:26 -0400 Message-Id: <20230801212226.909249-6-aconole@redhat.com> In-Reply-To: <20230801212226.909249-1-aconole@redhat.com> References: <20230801212226.909249-1-aconole@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Building on the previous work, add a very simplistic NAT case using ipv4. This just tests dnat transformation Signed-off-by: Aaron Conole --- NOTE: A number of lines flag the line-length checkpatch warning, but there didnt seem to be a really good way of breaking the lines smaller. .../selftests/net/openvswitch/openvswitch.sh | 64 +++++++++++++++++++ .../selftests/net/openvswitch/ovs-dpctl.py | 62 ++++++++++++++++++ 2 files changed, 126 insertions(+) diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh index 40a66c72af0f0..dced4f612a78c 100755 --- a/tools/testing/selftests/net/openvswitch/openvswitch.sh +++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh @@ -14,6 +14,7 @@ tests=" arp_ping eth-arp: Basic arp ping between two NS ct_connect_v4 ip4-ct-xon: Basic ipv4 tcp connection using ct connect_v4 ip4-xon: Basic ipv4 ping between two NS + nat_connect_v4 ip4-nat-xon: Basic ipv4 tcp connection via NAT netlink_checks ovsnl: validate netlink attrs and settings upcall_interfaces ovs: test the upcall interfaces" @@ -300,6 +301,69 @@ test_connect_v4 () { return 0 } +# nat_connect_v4 test +# - client has 1500 byte MTU +# - server has 1500 byte MTU +# - use ICMP to ping in each direction +# - only allow CT state stuff to pass through new in c -> s +test_nat_connect_v4 () { + which nc >/dev/null 2>/dev/null || return $ksft_skip + + sbx_add "test_nat_connect_v4" || return $? + + ovs_add_dp "test_nat_connect_v4" nat4 || return 1 + info "create namespaces" + for ns in client server; do + ovs_add_netns_and_veths "test_nat_connect_v4" "nat4" "$ns" \ + "${ns:0:1}0" "${ns:0:1}1" || return 1 + done + + ip netns exec client ip addr add 172.31.110.10/24 dev c1 + ip netns exec client ip link set c1 up + ip netns exec server ip addr add 172.31.110.20/24 dev s1 + ip netns exec server ip link set s1 up + + ip netns exec client ip route add default via 172.31.110.20 + + ovs_add_flow "test_nat_connect_v4" nat4 \ + 'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1 + ovs_add_flow "test_nat_connect_v4" nat4 \ + 'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1 + ovs_add_flow "test_nat_connect_v4" nat4 \ + "ct_state(-trk),in_port(1),eth(),eth_type(0x0800),ipv4(dst=192.168.0.20)" \ + "ct(commit,nat(dst=172.31.110.20)),recirc(0x1)" + ovs_add_flow "test_nat_connect_v4" nat4 \ + "ct_state(-trk),in_port(2),eth(),eth_type(0x0800),ipv4()" \ + "ct(commit,nat),recirc(0x2)" + + ovs_add_flow "test_nat_connect_v4" nat4 \ + "recirc_id(0x1),ct_state(+trk-inv),in_port(1),eth(),eth_type(0x0800),ipv4()" "2" + ovs_add_flow "test_nat_connect_v4" nat4 \ + "recirc_id(0x2),ct_state(+trk-inv),in_port(2),eth(),eth_type(0x0800),ipv4()" "1" + + # do a ping + ovs_sbx "test_nat_connect_v4" ip netns exec client ping 192.168.0.20 -c 3 || return 1 + + # create an echo server in 'server' + echo "server" | \ + ovs_netns_spawn_daemon "test_nat_connect_v4" "server" \ + nc -lvnp 4443 + ovs_sbx "test_nat_connect_v4" ip netns exec client nc -i 1 -zv 192.168.0.20 4443 || return 1 + + # Now test in the other direction (should fail) + echo "client" | \ + ovs_netns_spawn_daemon "test_nat_connect_v4" "client" \ + nc -lvnp 4443 + ovs_sbx "test_nat_connect_v4" ip netns exec client nc -i 1 -zv 172.31.110.10 4443 + if [ $? == 0 ]; then + info "connect to client was successful" + return 1 + fi + + info "done..." + return 0 +} + # netlink_validation # - Create a dp # - check no warning with "old version" simulation diff --git a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py index 1a3dc3762361b..fbdac15e31344 100644 --- a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py +++ b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py @@ -530,6 +530,68 @@ class ovsactions(nla): else: ctact["attrs"].append([scan[1], None]) actstr = actstr[strspn(actstr, ", ") :] + # it seems strange to put this here, but nat() is a complex + # sub-action and this lets it sit anywhere in the ct() action + if actstr.startswith("nat"): + actstr = actstr[3:] + natact = ovsactions.ctact.natattr() + + if actstr.startswith("("): + t = None + actstr = actstr[1:] + if actstr.startswith("src"): + t = "OVS_NAT_ATTR_SRC" + actstr = actstr[3:] + elif actstr.startswith("dst"): + t = "OVS_NAT_ATTR_DST" + actstr = actstr[3:] + + actstr, ip_block_min = parse_extract_field( + actstr, "=", "([0-9a-fA-F\.]+)", str, False + ) + actstr, ip_block_max = parse_extract_field( + actstr, "-", "([0-9a-fA-F\.]+)", str, False + ) + + actstr, proto_min = parse_extract_field( + actstr, ":", "(\d+)", int, False + ) + actstr, proto_max = parse_extract_field( + actstr, "-", "(\d+)", int, False + ) + + if t is not None: + natact["attrs"].append([t, None]) + + if ip_block_min is not None: + natact["attrs"].append( + ["OVS_NAT_ATTR_IP_MIN", ip_block_min] + ) + if ip_block_max is not None: + natact["attrs"].append( + ["OVS_NAT_ATTR_IP_MAX", ip_block_max] + ) + if proto_min is not None: + natact["attrs"].append( + ["OVS_NAT_ATTR_PROTO_MIN", proto_min] + ) + if proto_max is not None: + natact["attrs"].append( + ["OVS_NAT_ATTR_PROTO_MAX", proto_max] + ) + + for natscan in ( + ("persistent", "OVS_NAT_ATTR_PERSISTENT"), + ("hash", "OVS_NAT_ATTR_PROTO_HASH"), + ("random", "OVS_NAT_ATTR_PROTO_RANDOM"), + ): + if actstr.startswith(natscan[0]): + actstr = actstr[len(natscan[0]) :] + natact["attrs"].append([natscan[1], None]) + actstr = actstr[strspn(actstr, ", ") :] + + ctact["attrs"].append(["OVS_CT_ATTR_NAT", natact]) + actstr = actstr[strspn(actstr, ",) ") :] self["attrs"].append(["OVS_ACTION_ATTR_CT", ctact]) parsed = True