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GET /api/1.2/patches/2231879/?format=api
{ "id": 2231879, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2231879/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/patch/20260501133924.3100680-2-houminxi@gmail.com/", "project": { "id": 47, "url": "http://patchwork.ozlabs.org/api/1.2/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": "<20260501133924.3100680-2-houminxi@gmail.com>", "list_archive_url": null, "date": "2026-05-01T13:39:22", "name": "[ovs-dev,net-next,v2,1/2] selftests: openvswitch: add vlan() and encap() flow string parsing", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c40be7d16bad05016bbd92e41d86278949bab6ad", "submitter": { "id": 93141, "url": "http://patchwork.ozlabs.org/api/1.2/people/93141/?format=api", "name": "Minxi Hou", "email": "houminxi@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/openvswitch/patch/20260501133924.3100680-2-houminxi@gmail.com/mbox/", "series": [ { "id": 502459, "url": "http://patchwork.ozlabs.org/api/1.2/series/502459/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/list/?series=502459", "date": "2026-05-01T13:39:21", "name": "selftests: openvswitch: add pop_vlan test", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/502459/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2231879/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2231879/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@legolas.ozlabs.org", "ovs-dev@lists.linuxfoundation.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=IFNcmAKc;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=openvswitch.org\n (client-ip=2605:bc80:3010::137; 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Miller\" <davem@davemloft.net>", "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": "Extend the ovs-dpctl.py flow parser to support vlan() and encap()\nmatch strings. vlan() accepts tci=, vid=, pcp=, and cfi=\nparameters and generates the OVS_KEY_ATTR_VLAN attribute with a TCI\nvalue in network byte order. encap() parses nested flow strings\nand returns OVS_KEY_ATTR_ENCAP with inner key attributes as a\nrecursive NLA container.\n\nThe encap nla_map type is changed from \"none\" to \"nested\" so that\npyroute2 recursively encodes the inner flow key attributes. The\nVLAN nla_map type is changed from \"uint16\" to \"be16\" to match the\nkernel's big-endian wire format.\n\nSigned-off-by: Minxi Hou <houminxi@gmail.com>\n---\nv1 -> v2: rebase to latest net-next/main, drop --base=auto\n\n .../selftests/net/openvswitch/ovs-dpctl.py | 190 +++++++++++++++++-\n 1 file changed, 188 insertions(+), 2 deletions(-)", "diff": "diff --git a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py\nindex 848f61fdcee0..317be7878937 100644\n--- a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py\n+++ b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py\n@@ -901,11 +901,11 @@ class ovskey(nla):\n nla_flags = NLA_F_NESTED\n nla_map = (\n (\"OVS_KEY_ATTR_UNSPEC\", \"none\"),\n- (\"OVS_KEY_ATTR_ENCAP\", \"none\"),\n+ (\"OVS_KEY_ATTR_ENCAP\", \"nested\"),\n (\"OVS_KEY_ATTR_PRIORITY\", \"uint32\"),\n (\"OVS_KEY_ATTR_IN_PORT\", \"uint32\"),\n (\"OVS_KEY_ATTR_ETHERNET\", \"ethaddr\"),\n- (\"OVS_KEY_ATTR_VLAN\", \"uint16\"),\n+ (\"OVS_KEY_ATTR_VLAN\", \"be16\"),\n (\"OVS_KEY_ATTR_ETHERTYPE\", \"be16\"),\n (\"OVS_KEY_ATTR_IPV4\", \"ovs_key_ipv4\"),\n (\"OVS_KEY_ATTR_IPV6\", \"ovs_key_ipv6\"),\n@@ -1636,6 +1636,180 @@ class ovskey(nla):\n class ovs_key_mpls(nla):\n fields = ((\"lse\", \">I\"),)\n \n+ # 802.1Q CFI (Canonical Format Indicator) bit, always set for Ethernet\n+ _VLAN_CFI_MASK = 0x1000\n+ _MAX_ENCAP_DEPTH = 4\n+ _encap_depth = 0 # single-threaded usage assumed\n+\n+ @staticmethod\n+ def _parse_vlan_from_flowstr(flowstr):\n+ \"\"\"Parse vlan(tci=X) or vlan(vid=X[,pcp=Y,cfi=Z]) from flowstr.\n+\n+ Returns (remaining_flowstr, key_tci, mask_tci).\n+ TCI values use standard bit layout (VID bits 0-11,\n+ CFI bit 12, PCP bits 13-15); byte order conversion to\n+ big-endian happens in pyroute2 be16 NLA serialization.\n+ The mask covers only the fields the caller specified:\n+ vid -> 0x0FFF, pcp -> 0xE000, cfi -> 0x1000, tci -> 0xFFFF.\n+\n+ The tci= key sets the raw TCI bitfield (no CFI validation) to allow\n+ non-Ethernet use cases. Use cfi=1 for standard Ethernet VLAN matching.\n+ \"\"\"\n+ tci = 0\n+ mask = 0\n+ has_tci = False\n+ has_vid = has_pcp = has_cfi = False\n+ _tci_mix_err = \"vlan(): 'tci' cannot be mixed \" \\\n+ \"with 'vid'/'pcp'/'cfi'\"\n+ first = True\n+ while True:\n+ flowstr = flowstr.lstrip()\n+ if not flowstr:\n+ raise ValueError(\"vlan(): missing ')'\")\n+ if flowstr[0] == ')':\n+ break\n+ if not first:\n+ flowstr = flowstr[1:] # skip ','\n+ if not flowstr:\n+ raise ValueError(\"vlan(): missing ')' after trailing comma\")\n+ flowstr = flowstr.lstrip()\n+ if flowstr and flowstr[0] == ')':\n+ break\n+ if flowstr and flowstr[0] == ',':\n+ raise ValueError(\n+ \"vlan(): empty or extra comma in field list\")\n+ first = False\n+\n+ eq = flowstr.find('=')\n+ if eq == -1:\n+ raise ValueError(\"vlan(): expected key=value, got '%s'\" % flowstr)\n+ key = flowstr[:eq].strip()\n+ flowstr = flowstr[eq + 1:]\n+\n+ end = flowstr.find(',')\n+ end2 = flowstr.find(')')\n+ if end == -1 or (end2 != -1 and end2 < end):\n+ end = end2\n+ val = flowstr[:end].strip()\n+ flowstr = flowstr[end:]\n+\n+ if not val:\n+ raise ValueError(\"vlan(): empty value for key '%s'\" % key)\n+ try:\n+ v = int(val, 16) if val.startswith(('0x', '0X')) else int(val)\n+ except ValueError:\n+ raise ValueError(\"vlan(): invalid value '%s' for key '%s'\" %\n+ (val, key))\n+\n+ if key == 'tci':\n+ if has_tci:\n+ raise ValueError(\"vlan(): duplicate 'tci'\")\n+ if has_vid or has_pcp or has_cfi:\n+ raise ValueError(_tci_mix_err)\n+ if v > 0xFFFF or v < 0:\n+ raise ValueError(\"vlan(): tci=0x%x out of range\" % v)\n+ tci = v\n+ mask = 0xFFFF\n+ has_tci = True\n+ elif key == 'vid':\n+ if has_tci:\n+ raise ValueError(_tci_mix_err)\n+ if has_vid:\n+ raise ValueError(\"vlan(): duplicate 'vid'\")\n+ if v < 0 or v > 0xFFF:\n+ raise ValueError(\"vlan(): vid=%d out of range (0-4095)\" % v)\n+ tci |= v\n+ mask |= 0x0FFF\n+ has_vid = True\n+ elif key == 'pcp':\n+ if has_tci:\n+ raise ValueError(_tci_mix_err)\n+ if has_pcp:\n+ raise ValueError(\"vlan(): duplicate 'pcp'\")\n+ if v < 0 or v > 7:\n+ raise ValueError(\"vlan(): pcp=%d out of range (0-7)\" % v)\n+ tci |= (v & 0x7) << 13\n+ mask |= 0xE000\n+ has_pcp = True\n+ elif key == 'cfi':\n+ if has_tci:\n+ raise ValueError(_tci_mix_err)\n+ if has_cfi:\n+ raise ValueError(\"vlan(): duplicate 'cfi'\")\n+ if v != 1:\n+ raise ValueError(\"vlan(): cfi must be 1 for Ethernet\")\n+ tci |= ovskey._VLAN_CFI_MASK\n+ mask |= ovskey._VLAN_CFI_MASK\n+ has_cfi = True\n+ else:\n+ raise ValueError(\"vlan(): unknown key '%s'\" % key)\n+\n+ flowstr = flowstr[1:] # skip ')'\n+ # Catch immediate '))' (user error). A ')' after ',' is consumed\n+ # by parse()'s strspn(flowstr, \"), \") inter-field separator stripping.\n+ if flowstr.lstrip().startswith(')'):\n+ raise ValueError(\"vlan(): unmatched ')'\")\n+ # parse() strips trailing ',', ')', ' ' as inter-field separators,\n+ # so we do not need to call strspn here.\n+\n+ if mask == 0:\n+ raise ValueError(\"vlan(): no fields specified, \"\n+ \"use vlan(vid=X[,pcp=Y,cfi=Z]) or vlan(tci=X)\")\n+ if not has_tci:\n+ tci |= ovskey._VLAN_CFI_MASK\n+ mask |= ovskey._VLAN_CFI_MASK\n+ return flowstr, tci, mask\n+\n+ @staticmethod\n+ def _parse_encap_from_flowstr(flowstr):\n+ \"\"\"Parse encap(inner_flow) from flowstr.\n+\n+ Returns (remaining_flowstr, inner_key_dict, inner_mask_dict)\n+ where each dict has an 'attrs' key for recursive NLA encoding.\n+ Parenthesis-depth tracking handles nested encap() calls but not\n+ quoted strings containing literal parentheses.\n+ \"\"\"\n+ if ovskey._encap_depth >= ovskey._MAX_ENCAP_DEPTH:\n+ raise ValueError(\"encap(): max nesting depth %d exceeded\" %\n+ ovskey._MAX_ENCAP_DEPTH)\n+ try:\n+ ovskey._encap_depth += 1\n+ depth = 1\n+ end = -1\n+ for i, c in enumerate(flowstr):\n+ if c == '(':\n+ depth += 1\n+ elif c == ')':\n+ depth -= 1\n+ if depth < 0:\n+ raise ValueError(\"encap(): unmatched ')' at position %d\" % i)\n+ if depth == 0:\n+ end = i\n+ break\n+\n+ if end == -1:\n+ if depth > 1:\n+ raise ValueError(\"encap(): missing ')' at end\")\n+ raise ValueError(\"encap(): missing closing ')'\")\n+\n+ inner_str = flowstr[:end].strip()\n+ if not inner_str:\n+ raise ValueError(\"encap(): empty inner flow\")\n+\n+ flowstr = flowstr[end + 1:]\n+ if flowstr.lstrip().startswith(')'):\n+ raise ValueError(\"encap(): unmatched ')' after encap()\")\n+ # parse() strips trailing ',', ')', ' ' as inter-field separators,\n+ # so we do not need to call strspn here.\n+\n+ inner_key = ovskey()\n+ inner_mask = ovskey()\n+ inner_key.parse(inner_str, inner_mask)\n+\n+ return flowstr, inner_key, inner_mask\n+ finally:\n+ ovskey._encap_depth -= 1\n+\n def parse(self, flowstr, mask=None):\n for field in (\n (\"OVS_KEY_ATTR_PRIORITY\", \"skb_priority\", intparse),\n@@ -1657,6 +1831,16 @@ class ovskey(nla):\n \"eth_type\",\n lambda x: intparse(x, \"0xffff\"),\n ),\n+ (\n+ \"OVS_KEY_ATTR_VLAN\",\n+ \"vlan\",\n+ ovskey._parse_vlan_from_flowstr,\n+ ),\n+ (\n+ \"OVS_KEY_ATTR_ENCAP\",\n+ \"encap\",\n+ ovskey._parse_encap_from_flowstr,\n+ ),\n (\n \"OVS_KEY_ATTR_IPV4\",\n \"ipv4\",\n@@ -1794,6 +1978,8 @@ class ovskey(nla):\n True,\n ),\n (\"OVS_KEY_ATTR_ETHERNET\", None, None, False, False),\n+ (\"OVS_KEY_ATTR_VLAN\", \"vlan\", \"0x%04x\", lambda x: False, True),\n+ (\"OVS_KEY_ATTR_ENCAP\", None, None, False, False),\n (\n \"OVS_KEY_ATTR_ETHERTYPE\",\n \"eth_type\",\n", "prefixes": [ "ovs-dev", "net-next", "v2", "1/2" ] }