* [PATCH net-next v9 0/2] selftests: openvswitch: add pop_vlan test
@ 2026-05-09 13:54 Minxi Hou
2026-05-09 13:54 ` [PATCH net-next v9 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
` (4 more replies)
0 siblings, 5 replies; 11+ messages in thread
From: Minxi Hou @ 2026-05-09 13:54 UTC (permalink / raw)
To: netdev
Cc: aconole, echaudro, i.maximets, davem, edumazet, kuba, pabeni,
horms, shuah, dev, linux-kselftest, linux-kernel, Minxi Hou
Add test_pop_vlan() to verify OVS kernel datapath pop_vlan action
correctly strips 802.1Q VLAN tags from frames.
Patch 1 extends ovs-dpctl.py with vlan(vid=X,pcp=Y,cfi=Z) formatting
and parsing, plus an encap_ovskey subclass for safe ENCAP NLA decoding.
It changes OVS_KEY_ATTR_VLAN type from uint16 to be16 to match
the kernel __be16 wire format.
It also adds push_vlan action support (parse/format with range
validation) and removes the unnecessary MAX_ENCAP_DEPTH limit.
Patch 2 adds the selftest using purely ping-based verification with
a push_vlan return flow for symmetric bidirectional testing.
Tested with vng on x86_64, all OVS selftests pass (including new
test_pop_vlan).
v9:
- rebase on net-next (resolve conflict with 05416ada37aa4
"selftests: openvswitch: add tests for tunnel vport
refcounting")
v8: https://lore.kernel.org/netdev/20260508134308.2857449-1-houminxi@gmail.com/
- consistent error message prefix: push_vlan() instead of
push_vlan (matches vlan() and encap() style)
- unify encap() error messages for clarity
- add empty-string guards for MAC address variables
- remove slot number comments from encap_ovskey nla_map
- remove explicit modprobe 8021q pre-flight check
v7: https://lore.kernel.org/netdev/20260507131541.2331771-1-houminxi@gmail.com/
- remove slot number comments from encap_ovskey nla_map, keep
only comments explaining differences from base ovskey class
- remove explicit modprobe 8021q pre-flight check (ip link add
type vlan auto-loads the module)
v6: https://lore.kernel.org/netdev/20260506131218.1880852-1-houminxi@gmail.com/
- fix non-ASCII characters (em dashes) in comments and commit
messages
v5: https://lore.kernel.org/netdev/20260505124957.1239812-1-houminxi@gmail.com/
- add push_vlan action class, dpstr format and parse with range
validation (vid 0-4095, pcp 0-7, tpid 0-0xFFFF, CFI forced to 1)
- remove MAX_ENCAP_DEPTH constant and depth tracking (bracket-depth
counter in encap parser already handles nesting)
- remove start_capture/stop_capture helpers and tcpdump/pcap
verification -- use ping success/failure instead
- remove modprobe/netns pre-flight checks (other tests don't do this)
- remove ethtool VLAN offload disable (unnecessary for veth)
- add push_vlan return flow for symmetric bidirectional ping
- use ovs_sbx wrapper for ping commands (consistent with siblings)
v4: https://lore.kernel.org/netdev/20260504123713.555461-1-houminxi@gmail.com/
- fix all checkpatch line-length warnings in new code
- fix pylint W0707: use explicit exception chaining (from exc)
v3: https://lore.kernel.org/netdev/20260503120946.51869-1-houminxi@gmail.com/
- encap_ovskey: MPLS type "ovs_key_mpls" -> "array(ovs_key_mpls)"
- encap_ovskey: PRIORITY/IN_PORT set to "none" (metadata, not in ENCAP)
- _vlan_dpstr: cfi=0 falls back to tci=0x%04x for round-trip safety
- encap parse(): check return value for unrecognized trailing content
- vlan parser: boundary check + raise-from for exception chaining
v2: https://lore.kernel.org/netdev/20260501133924.3100680-1-houminxi@gmail.com/
Minxi Hou (2):
selftests: openvswitch: add vlan() and encap() flow string parsing
selftests: openvswitch: add pop_vlan test
.../selftests/net/openvswitch/openvswitch.sh | 78 +++++
.../selftests/net/openvswitch/ovs-dpctl.py | 322 +++++++++++++++++-
2 files changed, 390 insertions(+), 10 deletions(-)
--
2.53.0
^ permalink raw reply [flat|nested] 11+ messages in thread
* [PATCH net-next v9 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing
2026-05-09 13:54 [PATCH net-next v9 0/2] selftests: openvswitch: add pop_vlan test Minxi Hou
@ 2026-05-09 13:54 ` Minxi Hou
2026-05-09 13:54 ` [PATCH net-next v9 2/2] selftests: openvswitch: add pop_vlan test Minxi Hou
` (3 subsequent siblings)
4 siblings, 0 replies; 11+ messages in thread
From: Minxi Hou @ 2026-05-09 13:54 UTC (permalink / raw)
To: netdev
Cc: aconole, echaudro, i.maximets, davem, edumazet, kuba, pabeni,
horms, shuah, dev, linux-kselftest, linux-kernel, Minxi Hou
Add VLAN TCI formatting and parsing support to ovs-dpctl.py:
- Add _vlan_dpstr() to decompose TCI into vid/pcp/cfi fields,
with raw tci=0x%04x fallback when cfi=0 for round-trip safety.
- Add _parse_vlan_from_flowstr() boundary check for missing ')'.
- Add encap_ovskey subclass restricting nla_map to L2-L4 attributes
(slots 0-21) that appear inside 802.1Q ENCAP, with metadata
attributes set to "none".
- Check parse() return value for unrecognized trailing content.
- Support callable format functions in dpstr() output.
- Change OVS_KEY_ATTR_VLAN type from uint16 to be16 to match the
kernel __be16 wire format; uint16 decodes in host byte order,
which gives wrong values on little-endian architectures.
- Change OVS_KEY_ATTR_ENCAP type from none to encap_ovskey to
enable recursive parsing of 802.1Q encapsulated flow keys.
- Add push_vlan action class with fields matching kernel struct
ovs_action_push_vlan (vlan_tpid, vlan_tci as network-order u16).
- Add push_vlan dpstr format and parse with range validation
(vid 0-4095, pcp 0-7, tpid 0-0xFFFF) and CFI forced to 1.
- Remove MAX_ENCAP_DEPTH constant and depth tracking -- the
bracket-depth counter in the encap parser already handles
nesting; the global depth limit was unnecessary.
Signed-off-by: Minxi Hou <houminxi@gmail.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
---
.../selftests/net/openvswitch/ovs-dpctl.py | 322 +++++++++++++++++-
1 file changed, 312 insertions(+), 10 deletions(-)
diff --git a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py
index bbe35e2718d2..2738617c0087 100644
--- a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py
+++ b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py
@@ -369,7 +369,7 @@ class ovsactions(nla):
("OVS_ACTION_ATTR_OUTPUT", "uint32"),
("OVS_ACTION_ATTR_USERSPACE", "userspace"),
("OVS_ACTION_ATTR_SET", "ovskey"),
- ("OVS_ACTION_ATTR_PUSH_VLAN", "none"),
+ ("OVS_ACTION_ATTR_PUSH_VLAN", "push_vlan"),
("OVS_ACTION_ATTR_POP_VLAN", "flag"),
("OVS_ACTION_ATTR_SAMPLE", "sample"),
("OVS_ACTION_ATTR_RECIRC", "uint32"),
@@ -426,6 +426,9 @@ class ovsactions(nla):
return actstr
+ class push_vlan(nla):
+ fields = (("vlan_tpid", "!H"), ("vlan_tci", "!H"))
+
class sample(nla):
nla_flags = NLA_F_NESTED
@@ -632,6 +635,14 @@ class ovsactions(nla):
print_str += "ct_clear"
elif field[0] == "OVS_ACTION_ATTR_POP_VLAN":
print_str += "pop_vlan"
+ elif field[0] == "OVS_ACTION_ATTR_PUSH_VLAN":
+ datum = self.get_attr(field[0])
+ tpid = datum["vlan_tpid"]
+ tci = datum["vlan_tci"]
+ vid = tci & 0x0FFF
+ pcp = (tci >> 13) & 0x7
+ print_str += "push_vlan(vid=%d,pcp=%d" \
+ ",tpid=0x%04x)" % (vid, pcp, tpid)
elif field[0] == "OVS_ACTION_ATTR_POP_ETH":
print_str += "pop_eth"
elif field[0] == "OVS_ACTION_ATTR_POP_NSH":
@@ -725,7 +736,57 @@ class ovsactions(nla):
actstr = actstr[strspn(actstr, ", ") :]
parsed = True
- if parse_starts_block(actstr, "clone(", False):
+ if parse_starts_block(actstr, "push_vlan(", False):
+ actstr = actstr[len("push_vlan("):]
+ vid = 0
+ pcp = 0
+ tpid = 0x8100
+ if ")" not in actstr:
+ raise ValueError(
+ "push_vlan(): missing ')'")
+ paren = actstr.index(")")
+ if not actstr[:paren].strip():
+ raise ValueError("push_vlan(): no fields")
+ for kv in actstr[:paren].split(","):
+ if "=" not in kv:
+ raise ValueError(
+ "push_vlan(): bad field '%s'"
+ % kv.strip())
+ k = kv[:kv.index("=")].strip()
+ v = kv[kv.index("=") + 1:].strip()
+ if k == "vid":
+ vid = int(v, 0)
+ if vid < 0 or vid > 0xFFF:
+ raise ValueError(
+ "push_vlan(): vid=%d out of "
+ "range (0-4095)" % vid)
+ elif k == "pcp":
+ pcp = int(v, 0)
+ if pcp < 0 or pcp > 7:
+ raise ValueError(
+ "push_vlan(): pcp=%d out of "
+ "range (0-7)" % pcp)
+ elif k == "tpid":
+ tpid = int(v, 0)
+ if tpid < 0 or tpid > 0xFFFF:
+ raise ValueError(
+ "push_vlan(): tpid=0x%x out "
+ "of range (0-0xffff)" % tpid)
+ else:
+ raise ValueError(
+ "push_vlan(): unknown key '%s'"
+ % k)
+ tci = (vid & 0x0FFF) | ((pcp & 0x7) << 13) \
+ | 0x1000
+ pvact = self.push_vlan()
+ pvact["vlan_tpid"] = tpid
+ pvact["vlan_tci"] = tci
+ self["attrs"].append(
+ ["OVS_ACTION_ATTR_PUSH_VLAN", pvact])
+ actstr = actstr[paren + 1:]
+ parsed = True
+
+ elif parse_starts_block(actstr, "clone(", False):
parencount += 1
subacts = ovsactions()
actstr = actstr[len("clone("):]
@@ -900,11 +961,11 @@ class ovskey(nla):
nla_flags = NLA_F_NESTED
nla_map = (
("OVS_KEY_ATTR_UNSPEC", "none"),
- ("OVS_KEY_ATTR_ENCAP", "none"),
+ ("OVS_KEY_ATTR_ENCAP", "encap_ovskey"),
("OVS_KEY_ATTR_PRIORITY", "uint32"),
("OVS_KEY_ATTR_IN_PORT", "uint32"),
("OVS_KEY_ATTR_ETHERNET", "ethaddr"),
- ("OVS_KEY_ATTR_VLAN", "uint16"),
+ ("OVS_KEY_ATTR_VLAN", "be16"),
("OVS_KEY_ATTR_ETHERTYPE", "be16"),
("OVS_KEY_ATTR_IPV4", "ovs_key_ipv4"),
("OVS_KEY_ATTR_IPV6", "ovs_key_ipv6"),
@@ -1635,6 +1696,194 @@ class ovskey(nla):
class ovs_key_mpls(nla):
fields = (("lse", ">I"),)
+ # 802.1Q CFI (Canonical Format Indicator) bit, always set for Ethernet
+ _VLAN_CFI_MASK = 0x1000
+
+ @staticmethod
+ def _vlan_dpstr(tci):
+ """Format VLAN TCI as vid=X,pcp=Y,cfi=Z or tci=0xNNNN.
+
+ When cfi=1 (standard Ethernet VLAN), outputs decomposed
+ vid/pcp/cfi fields. When cfi=0 (truncated VLAN header),
+ falls back to raw tci=0x%04x to ensure round-trip
+ correctness: the parser auto-adds cfi=1 for vid/pcp
+ format, so cfi=0 would be lost on re-parse."""
+ vid = tci & 0x0FFF
+ pcp = (tci >> 13) & 0x7
+ cfi = (tci >> 12) & 0x1
+ if cfi:
+ return "vid=%d,pcp=%d,cfi=%d" % (vid, pcp, cfi)
+ return "tci=0x%04x" % tci
+
+ @staticmethod
+ def _parse_vlan_from_flowstr(flowstr):
+ """Parse vlan(tci=X) or vlan(vid=X[,pcp=Y,cfi=Z]) from flowstr.
+
+ Returns (remaining_flowstr, key_tci, mask_tci).
+ TCI values use standard bit layout (VID bits 0-11,
+ CFI bit 12, PCP bits 13-15); byte order conversion to
+ big-endian happens in pyroute2 be16 NLA serialization.
+ The mask covers only the fields the caller specified:
+ vid -> 0x0FFF, pcp -> 0xE000, cfi -> 0x1000, tci -> 0xFFFF.
+
+ The tci= key sets the raw TCI bitfield (no CFI validation) to allow
+ non-Ethernet use cases. Use cfi=1 for standard Ethernet VLAN matching.
+ """
+ tci = 0
+ mask = 0
+ has_tci = False
+ has_vid = has_pcp = has_cfi = False
+ _tci_mix_err = "vlan(): 'tci' cannot be mixed " \
+ "with 'vid'/'pcp'/'cfi'"
+ first = True
+ while True:
+ flowstr = flowstr.lstrip()
+ if not flowstr:
+ raise ValueError("vlan(): missing ')'")
+ if flowstr[0] == ')':
+ break
+ if not first:
+ flowstr = flowstr[1:] # skip ','
+ if not flowstr:
+ raise ValueError("vlan(): missing ')' after trailing comma")
+ flowstr = flowstr.lstrip()
+ if flowstr and flowstr[0] == ')':
+ break
+ if flowstr and flowstr[0] == ',':
+ raise ValueError(
+ "vlan(): empty or extra comma in field list")
+ first = False
+
+ eq = flowstr.find('=')
+ if eq == -1:
+ raise ValueError(
+ "vlan(): expected key=value, got '%s'" % flowstr)
+ key = flowstr[:eq].strip()
+ flowstr = flowstr[eq + 1:]
+
+ end = flowstr.find(',')
+ end2 = flowstr.find(')')
+ if end == -1 and end2 == -1:
+ raise ValueError("vlan(): missing ')'")
+ if end == -1 or (end2 != -1 and end2 < end):
+ end = end2
+ val = flowstr[:end].strip()
+ flowstr = flowstr[end:]
+
+ if not val:
+ raise ValueError("vlan(): empty value for key '%s'" % key)
+ try:
+ v = int(val, 16) if val.startswith(('0x', '0X')) else int(val)
+ except ValueError as exc:
+ raise ValueError(
+ "vlan(): invalid value '%s' for key '%s'"
+ % (val, key)) from exc
+
+ if key == 'tci':
+ if has_tci:
+ raise ValueError("vlan(): duplicate 'tci'")
+ if has_vid or has_pcp or has_cfi:
+ raise ValueError(_tci_mix_err)
+ if v > 0xFFFF or v < 0:
+ raise ValueError("vlan(): tci=0x%x out of range" % v)
+ tci = v
+ mask = 0xFFFF
+ has_tci = True
+ elif key == 'vid':
+ if has_tci:
+ raise ValueError(_tci_mix_err)
+ if has_vid:
+ raise ValueError("vlan(): duplicate 'vid'")
+ if v < 0 or v > 0xFFF:
+ raise ValueError("vlan(): vid=%d out of range (0-4095)" % v)
+ tci |= v
+ mask |= 0x0FFF
+ has_vid = True
+ elif key == 'pcp':
+ if has_tci:
+ raise ValueError(_tci_mix_err)
+ if has_pcp:
+ raise ValueError("vlan(): duplicate 'pcp'")
+ if v < 0 or v > 7:
+ raise ValueError("vlan(): pcp=%d out of range (0-7)" % v)
+ tci |= (v & 0x7) << 13
+ mask |= 0xE000
+ has_pcp = True
+ elif key == 'cfi':
+ if has_tci:
+ raise ValueError(_tci_mix_err)
+ if has_cfi:
+ raise ValueError("vlan(): duplicate 'cfi'")
+ if v != 1:
+ raise ValueError("vlan(): cfi must be 1 for Ethernet")
+ tci |= ovskey._VLAN_CFI_MASK
+ mask |= ovskey._VLAN_CFI_MASK
+ has_cfi = True
+ else:
+ raise ValueError("vlan(): unknown key '%s'" % key)
+
+ flowstr = flowstr[1:] # skip ')'
+ # Catch immediate '))' (user error). A ')' after ',' is consumed
+ # by parse()'s strspn(flowstr, "), ") inter-field separator stripping.
+ if flowstr.lstrip().startswith(')'):
+ raise ValueError("vlan(): unmatched ')'")
+ # parse() strips trailing ',', ')', ' ' as inter-field separators,
+ # so we do not need to call strspn here.
+
+ if mask == 0:
+ raise ValueError("vlan(): no fields specified, "
+ "use vlan(vid=X[,pcp=Y,cfi=Z]) or vlan(tci=X)")
+ if not has_tci:
+ tci |= ovskey._VLAN_CFI_MASK
+ mask |= ovskey._VLAN_CFI_MASK
+ return flowstr, tci, mask
+
+ @staticmethod
+ def _parse_encap_from_flowstr(flowstr):
+ """Parse encap(inner_flow) from flowstr.
+
+ Returns (remaining_flowstr, inner_key_dict, inner_mask_dict)
+ where each dict has an 'attrs' key for recursive NLA encoding.
+ Parenthesis-depth tracking handles nested encap() calls but not
+ quoted strings containing literal parentheses.
+ """
+ depth = 1
+ end = -1
+ for i, c in enumerate(flowstr):
+ if c == '(':
+ depth += 1
+ elif c == ')':
+ depth -= 1
+ if depth < 0:
+ raise ValueError(
+ "encap(): unmatched ')' at position %d" % i)
+ if depth == 0:
+ end = i
+ break
+
+ if end == -1:
+ if depth > 1:
+ raise ValueError("encap(): missing ')' in nested encap")
+ raise ValueError("encap(): missing ')'")
+
+ inner_str = flowstr[:end].strip()
+ if not inner_str:
+ raise ValueError("encap(): empty inner flow")
+
+ flowstr = flowstr[end + 1:]
+ if flowstr.lstrip().startswith(')'):
+ raise ValueError("encap(): unmatched ')' after encap()")
+
+ inner_key = encap_ovskey()
+ inner_mask = encap_ovskey()
+ remaining = inner_key.parse(inner_str, inner_mask)
+ if remaining and re.search(r'[^\s,)]', remaining):
+ raise ValueError(
+ "encap(): unrecognized trailing "
+ "content '%s'" % remaining.strip())
+
+ return flowstr, inner_key, inner_mask
+
def parse(self, flowstr, mask=None):
for field in (
("OVS_KEY_ATTR_PRIORITY", "skb_priority", intparse),
@@ -1656,6 +1905,16 @@ class ovskey(nla):
"eth_type",
lambda x: intparse(x, "0xffff"),
),
+ (
+ "OVS_KEY_ATTR_VLAN",
+ "vlan",
+ ovskey._parse_vlan_from_flowstr,
+ ),
+ (
+ "OVS_KEY_ATTR_ENCAP",
+ "encap",
+ ovskey._parse_encap_from_flowstr,
+ ),
(
"OVS_KEY_ATTR_IPV4",
"ipv4",
@@ -1793,6 +2052,9 @@ class ovskey(nla):
True,
),
("OVS_KEY_ATTR_ETHERNET", None, None, False, False),
+ ("OVS_KEY_ATTR_VLAN", "vlan", ovskey._vlan_dpstr,
+ lambda x: False, True),
+ ("OVS_KEY_ATTR_ENCAP", None, None, False, False),
(
"OVS_KEY_ATTR_ETHERTYPE",
"eth_type",
@@ -1820,22 +2082,61 @@ class ovskey(nla):
v = self.get_attr(field[0])
if v is not None:
m = None if mask is None else mask.get_attr(field[0])
+ fmt = field[2] # str format or callable
if field[4] is False:
print_str += v.dpstr(m, more)
print_str += ","
else:
if m is None or field[3](m):
- print_str += field[1] + "("
- print_str += field[2] % v
- print_str += "),"
+ val = fmt(v) if callable(fmt) else fmt % v
+ print_str += field[1] + "(" + val + "),"
elif more or m != 0:
- print_str += field[1] + "("
- print_str += (field[2] % v) + "/" + (field[2] % m)
- print_str += "),"
+ if callable(fmt):
+ val = fmt(v) + "/" + fmt(m)
+ else:
+ val = (fmt % v) + "/" + (fmt % m)
+ print_str += field[1] + "(" + val + "),"
return print_str
+class encap_ovskey(ovskey):
+ """Inner flow key attributes valid inside 802.1Q ENCAP.
+
+ Only L2-L4 key attributes (slots 0-21) appear inside ENCAP.
+ Metadata-only attributes (SKB_MARK, DP_HASH, RECIRC_ID, etc.)
+ are set to "none" -- they never appear inside ENCAP per
+ ovs_nla_put_vlan() in net/openvswitch/flow_netlink.c.
+
+ nla_map indexes must match OVS_KEY_ATTR_* enum values in
+ include/uapi/linux/openvswitch.h.
+ """
+ nla_map = (
+ ("OVS_KEY_ATTR_UNSPEC", "none"),
+ ("OVS_KEY_ATTR_ENCAP", "none"), # placeholder, parsed by ovskey
+ ("OVS_KEY_ATTR_PRIORITY", "none"), # skb metadata, not in ENCAP
+ ("OVS_KEY_ATTR_IN_PORT", "none"), # skb metadata, not in ENCAP
+ ("OVS_KEY_ATTR_ETHERNET", "ethaddr"),
+ ("OVS_KEY_ATTR_VLAN", "be16"),
+ ("OVS_KEY_ATTR_ETHERTYPE", "be16"),
+ ("OVS_KEY_ATTR_IPV4", "ovs_key_ipv4"),
+ ("OVS_KEY_ATTR_IPV6", "ovs_key_ipv6"),
+ ("OVS_KEY_ATTR_TCP", "ovs_key_tcp"),
+ ("OVS_KEY_ATTR_UDP", "ovs_key_udp"),
+ ("OVS_KEY_ATTR_ICMP", "ovs_key_icmp"),
+ ("OVS_KEY_ATTR_ICMPV6", "ovs_key_icmpv6"),
+ ("OVS_KEY_ATTR_ARP", "ovs_key_arp"),
+ ("OVS_KEY_ATTR_ND", "ovs_key_nd"),
+ ("OVS_KEY_ATTR_SKB_MARK", "none"), # metadata, not in ENCAP
+ ("OVS_KEY_ATTR_TUNNEL", "none"), # tunnel metadata, not in ENCAP
+ ("OVS_KEY_ATTR_SCTP", "ovs_key_sctp"),
+ ("OVS_KEY_ATTR_TCP_FLAGS", "be16"),
+ ("OVS_KEY_ATTR_DP_HASH", "none"), # metadata, not in ENCAP
+ ("OVS_KEY_ATTR_RECIRC_ID", "none"), # metadata, not in ENCAP
+ ("OVS_KEY_ATTR_MPLS", "array(ovs_key_mpls)"),
+ )
+
+
class OvsPacket(GenericNetlinkSocket):
OVS_PACKET_CMD_MISS = 1 # Flow table miss
OVS_PACKET_CMD_ACTION = 2 # USERSPACE action
@@ -2583,6 +2884,7 @@ def print_ovsdp_full(dp_lookup_rep, ifindex, ndb=NDB(), vpl=OvsVport()):
def main(argv):
+ nlmsg_atoms.encap_ovskey = encap_ovskey
nlmsg_atoms.ovskey = ovskey
nlmsg_atoms.ovsactions = ovsactions
--
2.53.0
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [PATCH net-next v9 2/2] selftests: openvswitch: add pop_vlan test
2026-05-09 13:54 [PATCH net-next v9 0/2] selftests: openvswitch: add pop_vlan test Minxi Hou
2026-05-09 13:54 ` [PATCH net-next v9 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
@ 2026-05-09 13:54 ` Minxi Hou
2026-05-11 12:05 ` [PATCH net-next v9 0/2] " Minxi Hou
` (2 subsequent siblings)
4 siblings, 0 replies; 11+ messages in thread
From: Minxi Hou @ 2026-05-09 13:54 UTC (permalink / raw)
To: netdev
Cc: aconole, echaudro, i.maximets, davem, edumazet, kuba, pabeni,
horms, shuah, dev, linux-kselftest, linux-kernel, Minxi Hou
Add test_pop_vlan() to verify OVS kernel datapath pop_vlan action
correctly strips 802.1Q VLAN tags from frames.
Test structure:
- Baseline: untagged forwarding validates basic connectivity.
- Negative: forward without pop_vlan, tagged frame is invisible
to ns2 (no VLAN sub-interface), ping fails.
- Positive: pop_vlan strips tag on forward path, push_vlan
restores tag on return path, ping succeeds.
Use static ARP entries to avoid VLAN-tagged ARP complexity.
Rely on ping success/failure for verification -- no tcpdump or
pcap files needed.
Signed-off-by: Minxi Hou <houminxi@gmail.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
---
.../selftests/net/openvswitch/openvswitch.sh | 78 +++++++++++++++++++
1 file changed, 78 insertions(+)
diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh
index 3cdd953f6813..8cd5b3d894ab 100755
--- a/tools/testing/selftests/net/openvswitch/openvswitch.sh
+++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh
@@ -28,6 +28,7 @@ tests="
tunnel_metadata ovs: test extraction of tunnel metadata
tunnel_refcount ovs: test tunnel vport reference cleanup
drop_reason drop: test drop reasons are emitted
+ pop_vlan vlan: POP_VLAN action strips tag
psample psample: Sampling packets with psample"
info() {
@@ -864,6 +865,83 @@ test_tunnel_refcount() {
ovs_wait dev_removed dp-${tun_type} || return 1
ovs_wait dev_removed ovs-${tun_type}0 || return 1
done
+
+ return 0
+}
+
+test_pop_vlan() {
+ local sbx="test_pop_vlan"
+ sbx_add "$sbx" || return $?
+ ovs_add_dp "$sbx" vlandp || return 1
+
+ ovs_add_netns_and_veths "$sbx" vlandp \
+ ns1 veth1 ns1veth 192.0.2.1/24 || return 1
+ ovs_add_netns_and_veths "$sbx" vlandp \
+ ns2 veth2 ns2veth 192.0.2.2/24 || return 1
+
+ # Baseline: untagged bidirectional forwarding
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(1),eth(),eth_type(0x0800),ipv4()' '2' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(2),eth(),eth_type(0x0800),ipv4()' '1' || return 1
+ ovs_sbx "$sbx" ip netns exec ns1 ping -c 3 -W 2 \
+ 192.0.2.2 || return 1
+
+ # VLAN topology: ns1 uses VLAN sub-interface, ns2 is plain
+ ip -n ns1 link add link ns1veth name ns1veth.10 \
+ type vlan id 10 || return 1
+ on_exit "ip -n ns1 link del ns1veth.10 2>/dev/null"
+ ip -n ns1 addr add 198.51.100.1/24 dev ns1veth.10 || return 1
+ ip -n ns1 link set ns1veth.10 up || return 1
+ ip -n ns2 addr add 198.51.100.2/24 dev ns2veth || return 1
+
+ ovs_del_flows "$sbx" vlandp
+
+ # Static ARP: avoids VLAN-tagged ARP complexity
+ local ns1veth10mac ns2mac
+ ns1veth10mac=$(ip -n ns1 link show ns1veth.10 \
+ | awk '/link\/ether/ {print $2}')
+ [ -z "$ns1veth10mac" ] && \
+ { info "failed to get ns1veth10mac"; return 1; }
+ ns2mac=$(ip -n ns2 link show ns2veth \
+ | awk '/link\/ether/ {print $2}')
+ [ -z "$ns2mac" ] && \
+ { info "failed to get ns2mac"; return 1; }
+ ip -n ns1 neigh replace 198.51.100.2 lladdr "$ns2mac" \
+ dev ns1veth.10 nud permanent || return 1
+ ip -n ns2 neigh replace 198.51.100.1 \
+ lladdr "$ns1veth10mac" \
+ dev ns2veth nud permanent || return 1
+
+ local vlan_match='in_port(1),eth(),eth_type(0x8100),'
+ vlan_match+='vlan(vid=10),'
+ vlan_match+='encap(eth_type(0x0800),'
+ vlan_match+='ipv4(src=198.51.100.1,proto=1),icmp())'
+
+ # Negative: forward without pop_vlan -- tagged frame
+ # is invisible to ns2 (no VLAN sub-interface), ping fails
+ ovs_add_flow "$sbx" vlandp "$vlan_match" '2' || return 1
+ ovs_sbx "$sbx" ip netns exec ns1 ping -I ns1veth.10 \
+ -c 3 -W 1 198.51.100.2 >/dev/null 2>&1 \
+ && { info "FAIL: ping should fail without pop_vlan"
+ return 1; }
+
+ ovs_del_flows "$sbx" vlandp
+
+ # Positive: pop_vlan strips tag on forward path,
+ # push_vlan restores tag on return path -- ping succeeds
+ ovs_add_flow "$sbx" vlandp \
+ "$vlan_match" 'pop_vlan,2' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(2),eth(),eth_type(0x0800),ipv4()' \
+ 'push_vlan(vid=10,pcp=0,tpid=0x8100),1' || return 1
+ ovs_sbx "$sbx" ip netns exec ns1 ping -I ns1veth.10 \
+ -c 3 -W 2 198.51.100.2 || return 1
+
return 0
}
--
2.53.0
^ permalink raw reply related [flat|nested] 11+ messages in thread
* Re: [PATCH net-next v9 0/2] selftests: openvswitch: add pop_vlan test
2026-05-09 13:54 [PATCH net-next v9 0/2] selftests: openvswitch: add pop_vlan test Minxi Hou
2026-05-09 13:54 ` [PATCH net-next v9 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
2026-05-09 13:54 ` [PATCH net-next v9 2/2] selftests: openvswitch: add pop_vlan test Minxi Hou
@ 2026-05-11 12:05 ` Minxi Hou
2026-05-12 6:38 ` [PATCH net-next v10 " Minxi Hou
2026-05-12 7:08 ` [PATCH net-next v10 0/2] " Minxi Hou
4 siblings, 0 replies; 11+ messages in thread
From: Minxi Hou @ 2026-05-11 12:05 UTC (permalink / raw)
To: netdev; +Cc: aconole, linux-kselftest
Found a few issues in v9 that need fixing, will respin as v10:
- Commit message for patch 1 references removing MAX_ENCAP_DEPTH,
which was dropped in an earlier revision. Needs cleanup.
- Masked VLAN format string produces output that cannot be parsed
back (round-trip failure for vlan key with masks).
- Negative test in patch 2 lacks a return flow for in_port(2),
so ping fails regardless of whether pop_vlan works correctly.
Need to add a return flow to make the negative case meaningful.
Minxi
^ permalink raw reply [flat|nested] 11+ messages in thread
* [PATCH net-next v10 0/2] selftests: openvswitch: add pop_vlan test
2026-05-09 13:54 [PATCH net-next v9 0/2] selftests: openvswitch: add pop_vlan test Minxi Hou
` (2 preceding siblings ...)
2026-05-11 12:05 ` [PATCH net-next v9 0/2] " Minxi Hou
@ 2026-05-12 6:38 ` Minxi Hou
2026-05-12 6:38 ` [PATCH v10 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
2026-05-12 6:38 ` [PATCH v10 2/2] selftests: openvswitch: add pop_vlan test Minxi Hou
2026-05-12 7:08 ` [PATCH net-next v10 0/2] " Minxi Hou
4 siblings, 2 replies; 11+ messages in thread
From: Minxi Hou @ 2026-05-12 6:38 UTC (permalink / raw)
To: netdev
Cc: dev, linux-kselftest, linux-kernel, aconole, echaudro, i.maximets,
davem, edumazet, kuba, pabeni, horms, shuah, Minxi Hou
Add test_pop_vlan() to verify OVS kernel datapath pop_vlan action
correctly strips 802.1Q VLAN tags from frames.
Patch 1 extends ovs-dpctl.py with vlan(vid=X,pcp=Y,cfi=Z) formatting
and parsing, plus an encap_ovskey subclass for safe ENCAP NLA decoding.
It changes OVS_KEY_ATTR_VLAN type from uint16 to be16 to match
the kernel __be16 wire format.
It also adds push_vlan action support (parse/format with range
validation).
Patch 2 adds the selftest using purely ping-based verification with
a push_vlan return flow for symmetric bidirectional testing.
Tested with vng on x86_64, all OVS selftests pass (including new
test_pop_vlan).
v10:
- fix masked VLAN dpstr round-trip: use tci=0xNNNN/0xMMMM format
for masked vlan() output instead of vid=X,pcp=Y,cfi=Z/vid=...
which the parser cannot re-consume
- fix int() base handling in _parse_vlan_from_flowstr: use
int(val, 0) for auto base detection instead of manual
0x prefix check
- fix commit message: remove reference to nonexistent
MAX_ENCAP_DEPTH constant, clarify "encap parse()" scope
v9: https://lore.kernel.org/netdev/20260509135423.3433910-1-houminxi@gmail.com/
- rebase on net-next (resolve conflict with 05416ada37aa4
"selftests: openvswitch: add tests for tunnel vport
refcounting")
v8: https://lore.kernel.org/netdev/20260508134308.2857449-1-houminxi@gmail.com/
- consistent error message prefix: push_vlan() instead of
push_vlan (matches vlan() and encap() style)
- unify encap() error messages for clarity
- add empty-string guards for MAC address variables
- remove slot number comments from encap_ovskey nla_map
- remove explicit modprobe 8021q pre-flight check
v7: https://lore.kernel.org/netdev/20260507131541.2331771-1-houminxi@gmail.com/
- remove slot number comments from encap_ovskey nla_map, keep
only comments explaining differences from base ovskey class
- remove explicit modprobe 8021q pre-flight check (ip link add
type vlan auto-loads the module)
v6: https://lore.kernel.org/netdev/20260506131218.1880852-1-houminxi@gmail.com/
- fix non-ASCII characters (em dashes) in comments and commit
messages
v5: https://lore.kernel.org/netdev/20260505124957.1239812-1-houminxi@gmail.com/
- add push_vlan action class, dpstr format and parse with range
validation (vid 0-4095, pcp 0-7, tpid 0-0xFFFF, CFI forced to 1)
- remove MAX_ENCAP_DEPTH constant and depth tracking (bracket-depth
counter in encap parser already handles nesting)
- remove start_capture/stop_capture helpers and tcpdump/pcap
verification -- use ping success/failure instead
- remove modprobe/netns pre-flight checks (other tests don't do this)
- remove ethtool VLAN offload disable (unnecessary for veth)
- add push_vlan return flow for symmetric bidirectional ping
- use ovs_sbx wrapper for ping commands (consistent with siblings)
v4: https://lore.kernel.org/netdev/20260504123713.555461-1-houminxi@gmail.com/
- fix all checkpatch line-length warnings in new code
- fix pylint W0707: use explicit exception chaining (from exc)
v3: https://lore.kernel.org/netdev/20260503120946.51869-1-houminxi@gmail.com/
- encap_ovskey: MPLS type "ovs_key_mpls" -> "array(ovs_key_mpls)"
- encap_ovskey: PRIORITY/IN_PORT set to "none" (metadata, not in ENCAP)
- _vlan_dpstr: cfi=0 falls back to tci=0x%04x for round-trip safety
- encap parse(): check return value for unrecognized trailing content
- vlan parser: boundary check + raise-from for exception chaining
v2: https://lore.kernel.org/netdev/20260501133924.3100680-1-houminxi@gmail.com/
Minxi Hou (2):
selftests: openvswitch: add vlan() and encap() flow string parsing
selftests: openvswitch: add pop_vlan test
.../selftests/net/openvswitch/openvswitch.sh | 78 +++++
.../selftests/net/openvswitch/ovs-dpctl.py | 324 +++++++++++++++++-
2 files changed, 392 insertions(+), 10 deletions(-)
--
2.53.0
^ permalink raw reply [flat|nested] 11+ messages in thread
* [PATCH v10 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing
2026-05-12 6:38 ` [PATCH net-next v10 " Minxi Hou
@ 2026-05-12 6:38 ` Minxi Hou
2026-05-12 6:38 ` [PATCH v10 2/2] selftests: openvswitch: add pop_vlan test Minxi Hou
1 sibling, 0 replies; 11+ messages in thread
From: Minxi Hou @ 2026-05-12 6:38 UTC (permalink / raw)
To: netdev
Cc: dev, linux-kselftest, linux-kernel, aconole, echaudro, i.maximets,
davem, edumazet, kuba, pabeni, horms, shuah, Minxi Hou
Add VLAN TCI formatting and parsing support to ovs-dpctl.py:
- Add _vlan_dpstr() to decompose TCI into vid/pcp/cfi fields,
with raw tci=0x%04x fallback when cfi=0 for round-trip safety.
- Add _parse_vlan_from_flowstr() boundary check for missing ')'.
- Add encap_ovskey subclass restricting nla_map to L2-L4 attributes
(slots 0-21) that appear inside 802.1Q ENCAP, with metadata
attributes set to "none".
- Check encap parse() return value for unrecognized trailing content.
- Support callable format functions in dpstr() output.
- Change OVS_KEY_ATTR_VLAN type from uint16 to be16 to match the
kernel __be16 wire format; uint16 decodes in host byte order,
which gives wrong values on little-endian architectures.
- Change OVS_KEY_ATTR_ENCAP type from none to encap_ovskey to
enable recursive parsing of 802.1Q encapsulated flow keys.
- Add push_vlan action class with fields matching kernel struct
ovs_action_push_vlan (vlan_tpid, vlan_tci as network-order u16).
- Add push_vlan dpstr format and parse with range validation
(vid 0-4095, pcp 0-7, tpid 0-0xFFFF) and CFI forced to 1.
Signed-off-by: Minxi Hou <houminxi@gmail.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
---
.../selftests/net/openvswitch/ovs-dpctl.py | 324 +++++++++++++++++-
1 file changed, 314 insertions(+), 10 deletions(-)
diff --git a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py
index bbe35e2718d2..3b6a26e265a4 100644
--- a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py
+++ b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py
@@ -369,7 +369,7 @@ class ovsactions(nla):
("OVS_ACTION_ATTR_OUTPUT", "uint32"),
("OVS_ACTION_ATTR_USERSPACE", "userspace"),
("OVS_ACTION_ATTR_SET", "ovskey"),
- ("OVS_ACTION_ATTR_PUSH_VLAN", "none"),
+ ("OVS_ACTION_ATTR_PUSH_VLAN", "push_vlan"),
("OVS_ACTION_ATTR_POP_VLAN", "flag"),
("OVS_ACTION_ATTR_SAMPLE", "sample"),
("OVS_ACTION_ATTR_RECIRC", "uint32"),
@@ -426,6 +426,9 @@ class ovsactions(nla):
return actstr
+ class push_vlan(nla):
+ fields = (("vlan_tpid", "!H"), ("vlan_tci", "!H"))
+
class sample(nla):
nla_flags = NLA_F_NESTED
@@ -632,6 +635,14 @@ class ovsactions(nla):
print_str += "ct_clear"
elif field[0] == "OVS_ACTION_ATTR_POP_VLAN":
print_str += "pop_vlan"
+ elif field[0] == "OVS_ACTION_ATTR_PUSH_VLAN":
+ datum = self.get_attr(field[0])
+ tpid = datum["vlan_tpid"]
+ tci = datum["vlan_tci"]
+ vid = tci & 0x0FFF
+ pcp = (tci >> 13) & 0x7
+ print_str += "push_vlan(vid=%d,pcp=%d" \
+ ",tpid=0x%04x)" % (vid, pcp, tpid)
elif field[0] == "OVS_ACTION_ATTR_POP_ETH":
print_str += "pop_eth"
elif field[0] == "OVS_ACTION_ATTR_POP_NSH":
@@ -725,7 +736,57 @@ class ovsactions(nla):
actstr = actstr[strspn(actstr, ", ") :]
parsed = True
- if parse_starts_block(actstr, "clone(", False):
+ if parse_starts_block(actstr, "push_vlan(", False):
+ actstr = actstr[len("push_vlan("):]
+ vid = 0
+ pcp = 0
+ tpid = 0x8100
+ if ")" not in actstr:
+ raise ValueError(
+ "push_vlan(): missing ')'")
+ paren = actstr.index(")")
+ if not actstr[:paren].strip():
+ raise ValueError("push_vlan(): no fields")
+ for kv in actstr[:paren].split(","):
+ if "=" not in kv:
+ raise ValueError(
+ "push_vlan(): bad field '%s'"
+ % kv.strip())
+ k = kv[:kv.index("=")].strip()
+ v = kv[kv.index("=") + 1:].strip()
+ if k == "vid":
+ vid = int(v, 0)
+ if vid < 0 or vid > 0xFFF:
+ raise ValueError(
+ "push_vlan(): vid=%d out of "
+ "range (0-4095)" % vid)
+ elif k == "pcp":
+ pcp = int(v, 0)
+ if pcp < 0 or pcp > 7:
+ raise ValueError(
+ "push_vlan(): pcp=%d out of "
+ "range (0-7)" % pcp)
+ elif k == "tpid":
+ tpid = int(v, 0)
+ if tpid < 0 or tpid > 0xFFFF:
+ raise ValueError(
+ "push_vlan(): tpid=0x%x out "
+ "of range (0-0xffff)" % tpid)
+ else:
+ raise ValueError(
+ "push_vlan(): unknown key '%s'"
+ % k)
+ tci = (vid & 0x0FFF) | ((pcp & 0x7) << 13) \
+ | 0x1000
+ pvact = self.push_vlan()
+ pvact["vlan_tpid"] = tpid
+ pvact["vlan_tci"] = tci
+ self["attrs"].append(
+ ["OVS_ACTION_ATTR_PUSH_VLAN", pvact])
+ actstr = actstr[paren + 1:]
+ parsed = True
+
+ elif parse_starts_block(actstr, "clone(", False):
parencount += 1
subacts = ovsactions()
actstr = actstr[len("clone("):]
@@ -900,11 +961,11 @@ class ovskey(nla):
nla_flags = NLA_F_NESTED
nla_map = (
("OVS_KEY_ATTR_UNSPEC", "none"),
- ("OVS_KEY_ATTR_ENCAP", "none"),
+ ("OVS_KEY_ATTR_ENCAP", "encap_ovskey"),
("OVS_KEY_ATTR_PRIORITY", "uint32"),
("OVS_KEY_ATTR_IN_PORT", "uint32"),
("OVS_KEY_ATTR_ETHERNET", "ethaddr"),
- ("OVS_KEY_ATTR_VLAN", "uint16"),
+ ("OVS_KEY_ATTR_VLAN", "be16"),
("OVS_KEY_ATTR_ETHERTYPE", "be16"),
("OVS_KEY_ATTR_IPV4", "ovs_key_ipv4"),
("OVS_KEY_ATTR_IPV6", "ovs_key_ipv6"),
@@ -1635,6 +1696,194 @@ class ovskey(nla):
class ovs_key_mpls(nla):
fields = (("lse", ">I"),)
+ # 802.1Q CFI (Canonical Format Indicator) bit, always set for Ethernet
+ _VLAN_CFI_MASK = 0x1000
+
+ @staticmethod
+ def _vlan_dpstr(tci):
+ """Format VLAN TCI as vid=X,pcp=Y,cfi=Z or tci=0xNNNN.
+
+ When cfi=1 (standard Ethernet VLAN), outputs decomposed
+ vid/pcp/cfi fields. When cfi=0 (truncated VLAN header),
+ falls back to raw tci=0x%04x to ensure round-trip
+ correctness: the parser auto-adds cfi=1 for vid/pcp
+ format, so cfi=0 would be lost on re-parse."""
+ vid = tci & 0x0FFF
+ pcp = (tci >> 13) & 0x7
+ cfi = (tci >> 12) & 0x1
+ if cfi:
+ return "vid=%d,pcp=%d,cfi=%d" % (vid, pcp, cfi)
+ return "tci=0x%04x" % tci
+
+ @staticmethod
+ def _parse_vlan_from_flowstr(flowstr):
+ """Parse vlan(tci=X) or vlan(vid=X[,pcp=Y,cfi=Z]) from flowstr.
+
+ Returns (remaining_flowstr, key_tci, mask_tci).
+ TCI values use standard bit layout (VID bits 0-11,
+ CFI bit 12, PCP bits 13-15); byte order conversion to
+ big-endian happens in pyroute2 be16 NLA serialization.
+ The mask covers only the fields the caller specified:
+ vid -> 0x0FFF, pcp -> 0xE000, cfi -> 0x1000, tci -> 0xFFFF.
+
+ The tci= key sets the raw TCI bitfield (no CFI validation) to allow
+ non-Ethernet use cases. Use cfi=1 for standard Ethernet VLAN matching.
+ """
+ tci = 0
+ mask = 0
+ has_tci = False
+ has_vid = has_pcp = has_cfi = False
+ _tci_mix_err = "vlan(): 'tci' cannot be mixed " \
+ "with 'vid'/'pcp'/'cfi'"
+ first = True
+ while True:
+ flowstr = flowstr.lstrip()
+ if not flowstr:
+ raise ValueError("vlan(): missing ')'")
+ if flowstr[0] == ')':
+ break
+ if not first:
+ flowstr = flowstr[1:] # skip ','
+ if not flowstr:
+ raise ValueError("vlan(): missing ')' after trailing comma")
+ flowstr = flowstr.lstrip()
+ if flowstr and flowstr[0] == ')':
+ break
+ if flowstr and flowstr[0] == ',':
+ raise ValueError(
+ "vlan(): empty or extra comma in field list")
+ first = False
+
+ eq = flowstr.find('=')
+ if eq == -1:
+ raise ValueError(
+ "vlan(): expected key=value, got '%s'" % flowstr)
+ key = flowstr[:eq].strip()
+ flowstr = flowstr[eq + 1:]
+
+ end = flowstr.find(',')
+ end2 = flowstr.find(')')
+ if end == -1 and end2 == -1:
+ raise ValueError("vlan(): missing ')'")
+ if end == -1 or (end2 != -1 and end2 < end):
+ end = end2
+ val = flowstr[:end].strip()
+ flowstr = flowstr[end:]
+
+ if not val:
+ raise ValueError("vlan(): empty value for key '%s'" % key)
+ try:
+ v = int(val, 0)
+ except ValueError as exc:
+ raise ValueError(
+ "vlan(): invalid value '%s' for key '%s'"
+ % (val, key)) from exc
+
+ if key == 'tci':
+ if has_tci:
+ raise ValueError("vlan(): duplicate 'tci'")
+ if has_vid or has_pcp or has_cfi:
+ raise ValueError(_tci_mix_err)
+ if v > 0xFFFF or v < 0:
+ raise ValueError("vlan(): tci=0x%x out of range" % v)
+ tci = v
+ mask = 0xFFFF
+ has_tci = True
+ elif key == 'vid':
+ if has_tci:
+ raise ValueError(_tci_mix_err)
+ if has_vid:
+ raise ValueError("vlan(): duplicate 'vid'")
+ if v < 0 or v > 0xFFF:
+ raise ValueError("vlan(): vid=%d out of range (0-4095)" % v)
+ tci |= v
+ mask |= 0x0FFF
+ has_vid = True
+ elif key == 'pcp':
+ if has_tci:
+ raise ValueError(_tci_mix_err)
+ if has_pcp:
+ raise ValueError("vlan(): duplicate 'pcp'")
+ if v < 0 or v > 7:
+ raise ValueError("vlan(): pcp=%d out of range (0-7)" % v)
+ tci |= (v & 0x7) << 13
+ mask |= 0xE000
+ has_pcp = True
+ elif key == 'cfi':
+ if has_tci:
+ raise ValueError(_tci_mix_err)
+ if has_cfi:
+ raise ValueError("vlan(): duplicate 'cfi'")
+ if v != 1:
+ raise ValueError("vlan(): cfi must be 1 for Ethernet")
+ tci |= ovskey._VLAN_CFI_MASK
+ mask |= ovskey._VLAN_CFI_MASK
+ has_cfi = True
+ else:
+ raise ValueError("vlan(): unknown key '%s'" % key)
+
+ flowstr = flowstr[1:] # skip ')'
+ # Catch immediate '))' (user error). A ')' after ',' is consumed
+ # by parse()'s strspn(flowstr, "), ") inter-field separator stripping.
+ if flowstr.lstrip().startswith(')'):
+ raise ValueError("vlan(): unmatched ')'")
+ # parse() strips trailing ',', ')', ' ' as inter-field separators,
+ # so we do not need to call strspn here.
+
+ if mask == 0:
+ raise ValueError("vlan(): no fields specified, "
+ "use vlan(vid=X[,pcp=Y,cfi=Z]) or vlan(tci=X)")
+ if not has_tci:
+ tci |= ovskey._VLAN_CFI_MASK
+ mask |= ovskey._VLAN_CFI_MASK
+ return flowstr, tci, mask
+
+ @staticmethod
+ def _parse_encap_from_flowstr(flowstr):
+ """Parse encap(inner_flow) from flowstr.
+
+ Returns (remaining_flowstr, inner_key_dict, inner_mask_dict)
+ where each dict has an 'attrs' key for recursive NLA encoding.
+ Parenthesis-depth tracking handles nested encap() calls but not
+ quoted strings containing literal parentheses.
+ """
+ depth = 1
+ end = -1
+ for i, c in enumerate(flowstr):
+ if c == '(':
+ depth += 1
+ elif c == ')':
+ depth -= 1
+ if depth < 0:
+ raise ValueError(
+ "encap(): unmatched ')' at position %d" % i)
+ if depth == 0:
+ end = i
+ break
+
+ if end == -1:
+ if depth > 1:
+ raise ValueError("encap(): missing ')' in nested encap")
+ raise ValueError("encap(): missing ')'")
+
+ inner_str = flowstr[:end].strip()
+ if not inner_str:
+ raise ValueError("encap(): empty inner flow")
+
+ flowstr = flowstr[end + 1:]
+ if flowstr.lstrip().startswith(')'):
+ raise ValueError("encap(): unmatched ')' after encap()")
+
+ inner_key = encap_ovskey()
+ inner_mask = encap_ovskey()
+ remaining = inner_key.parse(inner_str, inner_mask)
+ if remaining and re.search(r'[^\s,)]', remaining):
+ raise ValueError(
+ "encap(): unrecognized trailing "
+ "content '%s'" % remaining.strip())
+
+ return flowstr, inner_key, inner_mask
+
def parse(self, flowstr, mask=None):
for field in (
("OVS_KEY_ATTR_PRIORITY", "skb_priority", intparse),
@@ -1656,6 +1905,16 @@ class ovskey(nla):
"eth_type",
lambda x: intparse(x, "0xffff"),
),
+ (
+ "OVS_KEY_ATTR_VLAN",
+ "vlan",
+ ovskey._parse_vlan_from_flowstr,
+ ),
+ (
+ "OVS_KEY_ATTR_ENCAP",
+ "encap",
+ ovskey._parse_encap_from_flowstr,
+ ),
(
"OVS_KEY_ATTR_IPV4",
"ipv4",
@@ -1793,6 +2052,9 @@ class ovskey(nla):
True,
),
("OVS_KEY_ATTR_ETHERNET", None, None, False, False),
+ ("OVS_KEY_ATTR_VLAN", "vlan", ovskey._vlan_dpstr,
+ lambda x: False, True),
+ ("OVS_KEY_ATTR_ENCAP", None, None, False, False),
(
"OVS_KEY_ATTR_ETHERTYPE",
"eth_type",
@@ -1820,22 +2082,63 @@ class ovskey(nla):
v = self.get_attr(field[0])
if v is not None:
m = None if mask is None else mask.get_attr(field[0])
+ fmt = field[2] # str format or callable
if field[4] is False:
print_str += v.dpstr(m, more)
print_str += ","
else:
if m is None or field[3](m):
- print_str += field[1] + "("
- print_str += field[2] % v
- print_str += "),"
+ val = fmt(v) if callable(fmt) else fmt % v
+ print_str += field[1] + "(" + val + "),"
elif more or m != 0:
- print_str += field[1] + "("
- print_str += (field[2] % v) + "/" + (field[2] % m)
- print_str += "),"
+ if field[0] == "OVS_KEY_ATTR_VLAN":
+ val = "tci=0x%04x/0x%04x" % (v, m)
+ elif callable(fmt):
+ val = fmt(v) + "/" + fmt(m)
+ else:
+ val = (fmt % v) + "/" + (fmt % m)
+ print_str += field[1] + "(" + val + "),"
return print_str
+class encap_ovskey(ovskey):
+ """Inner flow key attributes valid inside 802.1Q ENCAP.
+
+ Only L2-L4 key attributes (slots 0-21) appear inside ENCAP.
+ Metadata-only attributes (SKB_MARK, DP_HASH, RECIRC_ID, etc.)
+ are set to "none" -- they never appear inside ENCAP per
+ ovs_nla_put_vlan() in net/openvswitch/flow_netlink.c.
+
+ nla_map indexes must match OVS_KEY_ATTR_* enum values in
+ include/uapi/linux/openvswitch.h.
+ """
+ nla_map = (
+ ("OVS_KEY_ATTR_UNSPEC", "none"),
+ ("OVS_KEY_ATTR_ENCAP", "none"), # placeholder, parsed by ovskey
+ ("OVS_KEY_ATTR_PRIORITY", "none"), # skb metadata, not in ENCAP
+ ("OVS_KEY_ATTR_IN_PORT", "none"), # skb metadata, not in ENCAP
+ ("OVS_KEY_ATTR_ETHERNET", "ethaddr"),
+ ("OVS_KEY_ATTR_VLAN", "be16"),
+ ("OVS_KEY_ATTR_ETHERTYPE", "be16"),
+ ("OVS_KEY_ATTR_IPV4", "ovs_key_ipv4"),
+ ("OVS_KEY_ATTR_IPV6", "ovs_key_ipv6"),
+ ("OVS_KEY_ATTR_TCP", "ovs_key_tcp"),
+ ("OVS_KEY_ATTR_UDP", "ovs_key_udp"),
+ ("OVS_KEY_ATTR_ICMP", "ovs_key_icmp"),
+ ("OVS_KEY_ATTR_ICMPV6", "ovs_key_icmpv6"),
+ ("OVS_KEY_ATTR_ARP", "ovs_key_arp"),
+ ("OVS_KEY_ATTR_ND", "ovs_key_nd"),
+ ("OVS_KEY_ATTR_SKB_MARK", "none"), # metadata, not in ENCAP
+ ("OVS_KEY_ATTR_TUNNEL", "none"), # tunnel metadata, not in ENCAP
+ ("OVS_KEY_ATTR_SCTP", "ovs_key_sctp"),
+ ("OVS_KEY_ATTR_TCP_FLAGS", "be16"),
+ ("OVS_KEY_ATTR_DP_HASH", "none"), # metadata, not in ENCAP
+ ("OVS_KEY_ATTR_RECIRC_ID", "none"), # metadata, not in ENCAP
+ ("OVS_KEY_ATTR_MPLS", "array(ovs_key_mpls)"),
+ )
+
+
class OvsPacket(GenericNetlinkSocket):
OVS_PACKET_CMD_MISS = 1 # Flow table miss
OVS_PACKET_CMD_ACTION = 2 # USERSPACE action
@@ -2583,6 +2886,7 @@ def print_ovsdp_full(dp_lookup_rep, ifindex, ndb=NDB(), vpl=OvsVport()):
def main(argv):
+ nlmsg_atoms.encap_ovskey = encap_ovskey
nlmsg_atoms.ovskey = ovskey
nlmsg_atoms.ovsactions = ovsactions
--
2.53.0
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [PATCH v10 2/2] selftests: openvswitch: add pop_vlan test
2026-05-12 6:38 ` [PATCH net-next v10 " Minxi Hou
2026-05-12 6:38 ` [PATCH v10 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
@ 2026-05-12 6:38 ` Minxi Hou
1 sibling, 0 replies; 11+ messages in thread
From: Minxi Hou @ 2026-05-12 6:38 UTC (permalink / raw)
To: netdev
Cc: dev, linux-kselftest, linux-kernel, aconole, echaudro, i.maximets,
davem, edumazet, kuba, pabeni, horms, shuah, Minxi Hou
Add test_pop_vlan() to verify OVS kernel datapath pop_vlan action
correctly strips 802.1Q VLAN tags from frames.
Test structure:
- Baseline: untagged forwarding validates basic connectivity.
- Negative: forward without pop_vlan, tagged frame is invisible
to ns2 (no VLAN sub-interface), ping fails.
- Positive: pop_vlan strips tag on forward path, push_vlan
restores tag on return path, ping succeeds.
Use static ARP entries to avoid VLAN-tagged ARP complexity.
Rely on ping success/failure for verification -- no tcpdump or
pcap files needed.
Signed-off-by: Minxi Hou <houminxi@gmail.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
---
.../selftests/net/openvswitch/openvswitch.sh | 78 +++++++++++++++++++
1 file changed, 78 insertions(+)
diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh
index 3cdd953f6813..8cd5b3d894ab 100755
--- a/tools/testing/selftests/net/openvswitch/openvswitch.sh
+++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh
@@ -28,6 +28,7 @@ tests="
tunnel_metadata ovs: test extraction of tunnel metadata
tunnel_refcount ovs: test tunnel vport reference cleanup
drop_reason drop: test drop reasons are emitted
+ pop_vlan vlan: POP_VLAN action strips tag
psample psample: Sampling packets with psample"
info() {
@@ -864,6 +865,83 @@ test_tunnel_refcount() {
ovs_wait dev_removed dp-${tun_type} || return 1
ovs_wait dev_removed ovs-${tun_type}0 || return 1
done
+
+ return 0
+}
+
+test_pop_vlan() {
+ local sbx="test_pop_vlan"
+ sbx_add "$sbx" || return $?
+ ovs_add_dp "$sbx" vlandp || return 1
+
+ ovs_add_netns_and_veths "$sbx" vlandp \
+ ns1 veth1 ns1veth 192.0.2.1/24 || return 1
+ ovs_add_netns_and_veths "$sbx" vlandp \
+ ns2 veth2 ns2veth 192.0.2.2/24 || return 1
+
+ # Baseline: untagged bidirectional forwarding
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(1),eth(),eth_type(0x0800),ipv4()' '2' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(2),eth(),eth_type(0x0800),ipv4()' '1' || return 1
+ ovs_sbx "$sbx" ip netns exec ns1 ping -c 3 -W 2 \
+ 192.0.2.2 || return 1
+
+ # VLAN topology: ns1 uses VLAN sub-interface, ns2 is plain
+ ip -n ns1 link add link ns1veth name ns1veth.10 \
+ type vlan id 10 || return 1
+ on_exit "ip -n ns1 link del ns1veth.10 2>/dev/null"
+ ip -n ns1 addr add 198.51.100.1/24 dev ns1veth.10 || return 1
+ ip -n ns1 link set ns1veth.10 up || return 1
+ ip -n ns2 addr add 198.51.100.2/24 dev ns2veth || return 1
+
+ ovs_del_flows "$sbx" vlandp
+
+ # Static ARP: avoids VLAN-tagged ARP complexity
+ local ns1veth10mac ns2mac
+ ns1veth10mac=$(ip -n ns1 link show ns1veth.10 \
+ | awk '/link\/ether/ {print $2}')
+ [ -z "$ns1veth10mac" ] && \
+ { info "failed to get ns1veth10mac"; return 1; }
+ ns2mac=$(ip -n ns2 link show ns2veth \
+ | awk '/link\/ether/ {print $2}')
+ [ -z "$ns2mac" ] && \
+ { info "failed to get ns2mac"; return 1; }
+ ip -n ns1 neigh replace 198.51.100.2 lladdr "$ns2mac" \
+ dev ns1veth.10 nud permanent || return 1
+ ip -n ns2 neigh replace 198.51.100.1 \
+ lladdr "$ns1veth10mac" \
+ dev ns2veth nud permanent || return 1
+
+ local vlan_match='in_port(1),eth(),eth_type(0x8100),'
+ vlan_match+='vlan(vid=10),'
+ vlan_match+='encap(eth_type(0x0800),'
+ vlan_match+='ipv4(src=198.51.100.1,proto=1),icmp())'
+
+ # Negative: forward without pop_vlan -- tagged frame
+ # is invisible to ns2 (no VLAN sub-interface), ping fails
+ ovs_add_flow "$sbx" vlandp "$vlan_match" '2' || return 1
+ ovs_sbx "$sbx" ip netns exec ns1 ping -I ns1veth.10 \
+ -c 3 -W 1 198.51.100.2 >/dev/null 2>&1 \
+ && { info "FAIL: ping should fail without pop_vlan"
+ return 1; }
+
+ ovs_del_flows "$sbx" vlandp
+
+ # Positive: pop_vlan strips tag on forward path,
+ # push_vlan restores tag on return path -- ping succeeds
+ ovs_add_flow "$sbx" vlandp \
+ "$vlan_match" 'pop_vlan,2' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(2),eth(),eth_type(0x0800),ipv4()' \
+ 'push_vlan(vid=10,pcp=0,tpid=0x8100),1' || return 1
+ ovs_sbx "$sbx" ip netns exec ns1 ping -I ns1veth.10 \
+ -c 3 -W 2 198.51.100.2 || return 1
+
return 0
}
--
2.53.0
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [PATCH net-next v10 0/2] selftests: openvswitch: add pop_vlan test
2026-05-09 13:54 [PATCH net-next v9 0/2] selftests: openvswitch: add pop_vlan test Minxi Hou
` (3 preceding siblings ...)
2026-05-12 6:38 ` [PATCH net-next v10 " Minxi Hou
@ 2026-05-12 7:08 ` Minxi Hou
2026-05-12 7:08 ` [PATCH net-next v10 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
2026-05-12 7:08 ` [PATCH net-next v10 2/2] selftests: openvswitch: add pop_vlan test Minxi Hou
4 siblings, 2 replies; 11+ messages in thread
From: Minxi Hou @ 2026-05-12 7:08 UTC (permalink / raw)
To: netdev
Cc: dev, linux-kselftest, linux-kernel, aconole, echaudro, i.maximets,
davem, edumazet, kuba, pabeni, horms, shuah, Minxi Hou
Add test_pop_vlan() to verify OVS kernel datapath pop_vlan action
correctly strips 802.1Q VLAN tags from frames.
Patch 1 extends ovs-dpctl.py with vlan(vid=X,pcp=Y,cfi=Z) formatting
and parsing, plus an encap_ovskey subclass for safe ENCAP NLA decoding.
It changes OVS_KEY_ATTR_VLAN type from uint16 to be16 to match
the kernel __be16 wire format.
It also adds push_vlan action support (parse/format with range
validation).
Patch 2 adds the selftest using purely ping-based verification with
a push_vlan return flow for symmetric bidirectional testing.
Tested with vng on x86_64, all OVS selftests pass (including new
test_pop_vlan).
v10:
- rebase on net-next
- fix masked VLAN dpstr round-trip: use tci=0xNNNN/0xMMMM format
for masked vlan() output instead of vid=X,pcp=Y,cfi=Z/vid=...
which the parser cannot re-consume
- fix int() base handling in _parse_vlan_from_flowstr: use
int(val, 0) for auto base detection instead of manual
0x prefix check
- fix commit message: remove reference to nonexistent
MAX_ENCAP_DEPTH constant, clarify "encap parse()" scope
v9: https://lore.kernel.org/netdev/20260509135423.3433910-1-houminxi@gmail.com/
- rebase on net-next (resolve conflict with 05416ada37aa4
"selftests: openvswitch: add tests for tunnel vport
refcounting")
v8: https://lore.kernel.org/netdev/20260508134308.2857449-1-houminxi@gmail.com/
- consistent error message prefix: push_vlan() instead of
push_vlan (matches vlan() and encap() style)
- unify encap() error messages for clarity
- add empty-string guards for MAC address variables
- remove slot number comments from encap_ovskey nla_map
- remove explicit modprobe 8021q pre-flight check
v7: https://lore.kernel.org/netdev/20260507131541.2331771-1-houminxi@gmail.com/
- remove slot number comments from encap_ovskey nla_map, keep
only comments explaining differences from base ovskey class
- remove explicit modprobe 8021q pre-flight check (ip link add
type vlan auto-loads the module)
v6: https://lore.kernel.org/netdev/20260506131218.1880852-1-houminxi@gmail.com/
- fix non-ASCII characters (em dashes) in comments and commit
messages
v5: https://lore.kernel.org/netdev/20260505124957.1239812-1-houminxi@gmail.com/
- add push_vlan action class, dpstr format and parse with range
validation (vid 0-4095, pcp 0-7, tpid 0-0xFFFF, CFI forced to 1)
- remove MAX_ENCAP_DEPTH constant and depth tracking (bracket-depth
counter in encap parser already handles nesting)
- remove start_capture/stop_capture helpers and tcpdump/pcap
verification -- use ping success/failure instead
- remove modprobe/netns pre-flight checks (other tests don't do this)
- remove ethtool VLAN offload disable (unnecessary for veth)
- add push_vlan return flow for symmetric bidirectional ping
- use ovs_sbx wrapper for ping commands (consistent with siblings)
v4: https://lore.kernel.org/netdev/20260504123713.555461-1-houminxi@gmail.com/
- fix all checkpatch line-length warnings in new code
- fix pylint W0707: use explicit exception chaining (from exc)
v3: https://lore.kernel.org/netdev/20260503120946.51869-1-houminxi@gmail.com/
- encap_ovskey: MPLS type "ovs_key_mpls" -> "array(ovs_key_mpls)"
- encap_ovskey: PRIORITY/IN_PORT set to "none" (metadata, not in ENCAP)
- _vlan_dpstr: cfi=0 falls back to tci=0x%04x for round-trip safety
- encap parse(): check return value for unrecognized trailing content
- vlan parser: boundary check + raise-from for exception chaining
v2: https://lore.kernel.org/netdev/20260501133924.3100680-1-houminxi@gmail.com/
Minxi Hou (2):
selftests: openvswitch: add vlan() and encap() flow string parsing
selftests: openvswitch: add pop_vlan test
.../selftests/net/openvswitch/openvswitch.sh | 78 +++++
.../selftests/net/openvswitch/ovs-dpctl.py | 324 +++++++++++++++++-
2 files changed, 392 insertions(+), 10 deletions(-)
--
2.53.0
^ permalink raw reply [flat|nested] 11+ messages in thread
* [PATCH net-next v10 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing
2026-05-12 7:08 ` [PATCH net-next v10 0/2] " Minxi Hou
@ 2026-05-12 7:08 ` Minxi Hou
2026-05-15 0:20 ` patchwork-bot+netdevbpf
2026-05-12 7:08 ` [PATCH net-next v10 2/2] selftests: openvswitch: add pop_vlan test Minxi Hou
1 sibling, 1 reply; 11+ messages in thread
From: Minxi Hou @ 2026-05-12 7:08 UTC (permalink / raw)
To: netdev
Cc: dev, linux-kselftest, linux-kernel, aconole, echaudro, i.maximets,
davem, edumazet, kuba, pabeni, horms, shuah, Minxi Hou
Add VLAN TCI formatting and parsing support to ovs-dpctl.py:
- Add _vlan_dpstr() to decompose TCI into vid/pcp/cfi fields,
with raw tci=0x%04x fallback when cfi=0 for round-trip safety.
- Add _parse_vlan_from_flowstr() boundary check for missing ')'.
- Add encap_ovskey subclass restricting nla_map to L2-L4 attributes
(slots 0-21) that appear inside 802.1Q ENCAP, with metadata
attributes set to "none".
- Check encap parse() return value for unrecognized trailing content.
- Support callable format functions in dpstr() output.
- Change OVS_KEY_ATTR_VLAN type from uint16 to be16 to match the
kernel __be16 wire format; uint16 decodes in host byte order,
which gives wrong values on little-endian architectures.
- Change OVS_KEY_ATTR_ENCAP type from none to encap_ovskey to
enable recursive parsing of 802.1Q encapsulated flow keys.
- Add push_vlan action class with fields matching kernel struct
ovs_action_push_vlan (vlan_tpid, vlan_tci as network-order u16).
- Add push_vlan dpstr format and parse with range validation
(vid 0-4095, pcp 0-7, tpid 0-0xFFFF) and CFI forced to 1.
Signed-off-by: Minxi Hou <houminxi@gmail.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
---
.../selftests/net/openvswitch/ovs-dpctl.py | 324 +++++++++++++++++-
1 file changed, 314 insertions(+), 10 deletions(-)
diff --git a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py
index bbe35e2718d2..3b6a26e265a4 100644
--- a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py
+++ b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py
@@ -369,7 +369,7 @@ class ovsactions(nla):
("OVS_ACTION_ATTR_OUTPUT", "uint32"),
("OVS_ACTION_ATTR_USERSPACE", "userspace"),
("OVS_ACTION_ATTR_SET", "ovskey"),
- ("OVS_ACTION_ATTR_PUSH_VLAN", "none"),
+ ("OVS_ACTION_ATTR_PUSH_VLAN", "push_vlan"),
("OVS_ACTION_ATTR_POP_VLAN", "flag"),
("OVS_ACTION_ATTR_SAMPLE", "sample"),
("OVS_ACTION_ATTR_RECIRC", "uint32"),
@@ -426,6 +426,9 @@ class ovsactions(nla):
return actstr
+ class push_vlan(nla):
+ fields = (("vlan_tpid", "!H"), ("vlan_tci", "!H"))
+
class sample(nla):
nla_flags = NLA_F_NESTED
@@ -632,6 +635,14 @@ class ovsactions(nla):
print_str += "ct_clear"
elif field[0] == "OVS_ACTION_ATTR_POP_VLAN":
print_str += "pop_vlan"
+ elif field[0] == "OVS_ACTION_ATTR_PUSH_VLAN":
+ datum = self.get_attr(field[0])
+ tpid = datum["vlan_tpid"]
+ tci = datum["vlan_tci"]
+ vid = tci & 0x0FFF
+ pcp = (tci >> 13) & 0x7
+ print_str += "push_vlan(vid=%d,pcp=%d" \
+ ",tpid=0x%04x)" % (vid, pcp, tpid)
elif field[0] == "OVS_ACTION_ATTR_POP_ETH":
print_str += "pop_eth"
elif field[0] == "OVS_ACTION_ATTR_POP_NSH":
@@ -725,7 +736,57 @@ class ovsactions(nla):
actstr = actstr[strspn(actstr, ", ") :]
parsed = True
- if parse_starts_block(actstr, "clone(", False):
+ if parse_starts_block(actstr, "push_vlan(", False):
+ actstr = actstr[len("push_vlan("):]
+ vid = 0
+ pcp = 0
+ tpid = 0x8100
+ if ")" not in actstr:
+ raise ValueError(
+ "push_vlan(): missing ')'")
+ paren = actstr.index(")")
+ if not actstr[:paren].strip():
+ raise ValueError("push_vlan(): no fields")
+ for kv in actstr[:paren].split(","):
+ if "=" not in kv:
+ raise ValueError(
+ "push_vlan(): bad field '%s'"
+ % kv.strip())
+ k = kv[:kv.index("=")].strip()
+ v = kv[kv.index("=") + 1:].strip()
+ if k == "vid":
+ vid = int(v, 0)
+ if vid < 0 or vid > 0xFFF:
+ raise ValueError(
+ "push_vlan(): vid=%d out of "
+ "range (0-4095)" % vid)
+ elif k == "pcp":
+ pcp = int(v, 0)
+ if pcp < 0 or pcp > 7:
+ raise ValueError(
+ "push_vlan(): pcp=%d out of "
+ "range (0-7)" % pcp)
+ elif k == "tpid":
+ tpid = int(v, 0)
+ if tpid < 0 or tpid > 0xFFFF:
+ raise ValueError(
+ "push_vlan(): tpid=0x%x out "
+ "of range (0-0xffff)" % tpid)
+ else:
+ raise ValueError(
+ "push_vlan(): unknown key '%s'"
+ % k)
+ tci = (vid & 0x0FFF) | ((pcp & 0x7) << 13) \
+ | 0x1000
+ pvact = self.push_vlan()
+ pvact["vlan_tpid"] = tpid
+ pvact["vlan_tci"] = tci
+ self["attrs"].append(
+ ["OVS_ACTION_ATTR_PUSH_VLAN", pvact])
+ actstr = actstr[paren + 1:]
+ parsed = True
+
+ elif parse_starts_block(actstr, "clone(", False):
parencount += 1
subacts = ovsactions()
actstr = actstr[len("clone("):]
@@ -900,11 +961,11 @@ class ovskey(nla):
nla_flags = NLA_F_NESTED
nla_map = (
("OVS_KEY_ATTR_UNSPEC", "none"),
- ("OVS_KEY_ATTR_ENCAP", "none"),
+ ("OVS_KEY_ATTR_ENCAP", "encap_ovskey"),
("OVS_KEY_ATTR_PRIORITY", "uint32"),
("OVS_KEY_ATTR_IN_PORT", "uint32"),
("OVS_KEY_ATTR_ETHERNET", "ethaddr"),
- ("OVS_KEY_ATTR_VLAN", "uint16"),
+ ("OVS_KEY_ATTR_VLAN", "be16"),
("OVS_KEY_ATTR_ETHERTYPE", "be16"),
("OVS_KEY_ATTR_IPV4", "ovs_key_ipv4"),
("OVS_KEY_ATTR_IPV6", "ovs_key_ipv6"),
@@ -1635,6 +1696,194 @@ class ovskey(nla):
class ovs_key_mpls(nla):
fields = (("lse", ">I"),)
+ # 802.1Q CFI (Canonical Format Indicator) bit, always set for Ethernet
+ _VLAN_CFI_MASK = 0x1000
+
+ @staticmethod
+ def _vlan_dpstr(tci):
+ """Format VLAN TCI as vid=X,pcp=Y,cfi=Z or tci=0xNNNN.
+
+ When cfi=1 (standard Ethernet VLAN), outputs decomposed
+ vid/pcp/cfi fields. When cfi=0 (truncated VLAN header),
+ falls back to raw tci=0x%04x to ensure round-trip
+ correctness: the parser auto-adds cfi=1 for vid/pcp
+ format, so cfi=0 would be lost on re-parse."""
+ vid = tci & 0x0FFF
+ pcp = (tci >> 13) & 0x7
+ cfi = (tci >> 12) & 0x1
+ if cfi:
+ return "vid=%d,pcp=%d,cfi=%d" % (vid, pcp, cfi)
+ return "tci=0x%04x" % tci
+
+ @staticmethod
+ def _parse_vlan_from_flowstr(flowstr):
+ """Parse vlan(tci=X) or vlan(vid=X[,pcp=Y,cfi=Z]) from flowstr.
+
+ Returns (remaining_flowstr, key_tci, mask_tci).
+ TCI values use standard bit layout (VID bits 0-11,
+ CFI bit 12, PCP bits 13-15); byte order conversion to
+ big-endian happens in pyroute2 be16 NLA serialization.
+ The mask covers only the fields the caller specified:
+ vid -> 0x0FFF, pcp -> 0xE000, cfi -> 0x1000, tci -> 0xFFFF.
+
+ The tci= key sets the raw TCI bitfield (no CFI validation) to allow
+ non-Ethernet use cases. Use cfi=1 for standard Ethernet VLAN matching.
+ """
+ tci = 0
+ mask = 0
+ has_tci = False
+ has_vid = has_pcp = has_cfi = False
+ _tci_mix_err = "vlan(): 'tci' cannot be mixed " \
+ "with 'vid'/'pcp'/'cfi'"
+ first = True
+ while True:
+ flowstr = flowstr.lstrip()
+ if not flowstr:
+ raise ValueError("vlan(): missing ')'")
+ if flowstr[0] == ')':
+ break
+ if not first:
+ flowstr = flowstr[1:] # skip ','
+ if not flowstr:
+ raise ValueError("vlan(): missing ')' after trailing comma")
+ flowstr = flowstr.lstrip()
+ if flowstr and flowstr[0] == ')':
+ break
+ if flowstr and flowstr[0] == ',':
+ raise ValueError(
+ "vlan(): empty or extra comma in field list")
+ first = False
+
+ eq = flowstr.find('=')
+ if eq == -1:
+ raise ValueError(
+ "vlan(): expected key=value, got '%s'" % flowstr)
+ key = flowstr[:eq].strip()
+ flowstr = flowstr[eq + 1:]
+
+ end = flowstr.find(',')
+ end2 = flowstr.find(')')
+ if end == -1 and end2 == -1:
+ raise ValueError("vlan(): missing ')'")
+ if end == -1 or (end2 != -1 and end2 < end):
+ end = end2
+ val = flowstr[:end].strip()
+ flowstr = flowstr[end:]
+
+ if not val:
+ raise ValueError("vlan(): empty value for key '%s'" % key)
+ try:
+ v = int(val, 0)
+ except ValueError as exc:
+ raise ValueError(
+ "vlan(): invalid value '%s' for key '%s'"
+ % (val, key)) from exc
+
+ if key == 'tci':
+ if has_tci:
+ raise ValueError("vlan(): duplicate 'tci'")
+ if has_vid or has_pcp or has_cfi:
+ raise ValueError(_tci_mix_err)
+ if v > 0xFFFF or v < 0:
+ raise ValueError("vlan(): tci=0x%x out of range" % v)
+ tci = v
+ mask = 0xFFFF
+ has_tci = True
+ elif key == 'vid':
+ if has_tci:
+ raise ValueError(_tci_mix_err)
+ if has_vid:
+ raise ValueError("vlan(): duplicate 'vid'")
+ if v < 0 or v > 0xFFF:
+ raise ValueError("vlan(): vid=%d out of range (0-4095)" % v)
+ tci |= v
+ mask |= 0x0FFF
+ has_vid = True
+ elif key == 'pcp':
+ if has_tci:
+ raise ValueError(_tci_mix_err)
+ if has_pcp:
+ raise ValueError("vlan(): duplicate 'pcp'")
+ if v < 0 or v > 7:
+ raise ValueError("vlan(): pcp=%d out of range (0-7)" % v)
+ tci |= (v & 0x7) << 13
+ mask |= 0xE000
+ has_pcp = True
+ elif key == 'cfi':
+ if has_tci:
+ raise ValueError(_tci_mix_err)
+ if has_cfi:
+ raise ValueError("vlan(): duplicate 'cfi'")
+ if v != 1:
+ raise ValueError("vlan(): cfi must be 1 for Ethernet")
+ tci |= ovskey._VLAN_CFI_MASK
+ mask |= ovskey._VLAN_CFI_MASK
+ has_cfi = True
+ else:
+ raise ValueError("vlan(): unknown key '%s'" % key)
+
+ flowstr = flowstr[1:] # skip ')'
+ # Catch immediate '))' (user error). A ')' after ',' is consumed
+ # by parse()'s strspn(flowstr, "), ") inter-field separator stripping.
+ if flowstr.lstrip().startswith(')'):
+ raise ValueError("vlan(): unmatched ')'")
+ # parse() strips trailing ',', ')', ' ' as inter-field separators,
+ # so we do not need to call strspn here.
+
+ if mask == 0:
+ raise ValueError("vlan(): no fields specified, "
+ "use vlan(vid=X[,pcp=Y,cfi=Z]) or vlan(tci=X)")
+ if not has_tci:
+ tci |= ovskey._VLAN_CFI_MASK
+ mask |= ovskey._VLAN_CFI_MASK
+ return flowstr, tci, mask
+
+ @staticmethod
+ def _parse_encap_from_flowstr(flowstr):
+ """Parse encap(inner_flow) from flowstr.
+
+ Returns (remaining_flowstr, inner_key_dict, inner_mask_dict)
+ where each dict has an 'attrs' key for recursive NLA encoding.
+ Parenthesis-depth tracking handles nested encap() calls but not
+ quoted strings containing literal parentheses.
+ """
+ depth = 1
+ end = -1
+ for i, c in enumerate(flowstr):
+ if c == '(':
+ depth += 1
+ elif c == ')':
+ depth -= 1
+ if depth < 0:
+ raise ValueError(
+ "encap(): unmatched ')' at position %d" % i)
+ if depth == 0:
+ end = i
+ break
+
+ if end == -1:
+ if depth > 1:
+ raise ValueError("encap(): missing ')' in nested encap")
+ raise ValueError("encap(): missing ')'")
+
+ inner_str = flowstr[:end].strip()
+ if not inner_str:
+ raise ValueError("encap(): empty inner flow")
+
+ flowstr = flowstr[end + 1:]
+ if flowstr.lstrip().startswith(')'):
+ raise ValueError("encap(): unmatched ')' after encap()")
+
+ inner_key = encap_ovskey()
+ inner_mask = encap_ovskey()
+ remaining = inner_key.parse(inner_str, inner_mask)
+ if remaining and re.search(r'[^\s,)]', remaining):
+ raise ValueError(
+ "encap(): unrecognized trailing "
+ "content '%s'" % remaining.strip())
+
+ return flowstr, inner_key, inner_mask
+
def parse(self, flowstr, mask=None):
for field in (
("OVS_KEY_ATTR_PRIORITY", "skb_priority", intparse),
@@ -1656,6 +1905,16 @@ class ovskey(nla):
"eth_type",
lambda x: intparse(x, "0xffff"),
),
+ (
+ "OVS_KEY_ATTR_VLAN",
+ "vlan",
+ ovskey._parse_vlan_from_flowstr,
+ ),
+ (
+ "OVS_KEY_ATTR_ENCAP",
+ "encap",
+ ovskey._parse_encap_from_flowstr,
+ ),
(
"OVS_KEY_ATTR_IPV4",
"ipv4",
@@ -1793,6 +2052,9 @@ class ovskey(nla):
True,
),
("OVS_KEY_ATTR_ETHERNET", None, None, False, False),
+ ("OVS_KEY_ATTR_VLAN", "vlan", ovskey._vlan_dpstr,
+ lambda x: False, True),
+ ("OVS_KEY_ATTR_ENCAP", None, None, False, False),
(
"OVS_KEY_ATTR_ETHERTYPE",
"eth_type",
@@ -1820,22 +2082,63 @@ class ovskey(nla):
v = self.get_attr(field[0])
if v is not None:
m = None if mask is None else mask.get_attr(field[0])
+ fmt = field[2] # str format or callable
if field[4] is False:
print_str += v.dpstr(m, more)
print_str += ","
else:
if m is None or field[3](m):
- print_str += field[1] + "("
- print_str += field[2] % v
- print_str += "),"
+ val = fmt(v) if callable(fmt) else fmt % v
+ print_str += field[1] + "(" + val + "),"
elif more or m != 0:
- print_str += field[1] + "("
- print_str += (field[2] % v) + "/" + (field[2] % m)
- print_str += "),"
+ if field[0] == "OVS_KEY_ATTR_VLAN":
+ val = "tci=0x%04x/0x%04x" % (v, m)
+ elif callable(fmt):
+ val = fmt(v) + "/" + fmt(m)
+ else:
+ val = (fmt % v) + "/" + (fmt % m)
+ print_str += field[1] + "(" + val + "),"
return print_str
+class encap_ovskey(ovskey):
+ """Inner flow key attributes valid inside 802.1Q ENCAP.
+
+ Only L2-L4 key attributes (slots 0-21) appear inside ENCAP.
+ Metadata-only attributes (SKB_MARK, DP_HASH, RECIRC_ID, etc.)
+ are set to "none" -- they never appear inside ENCAP per
+ ovs_nla_put_vlan() in net/openvswitch/flow_netlink.c.
+
+ nla_map indexes must match OVS_KEY_ATTR_* enum values in
+ include/uapi/linux/openvswitch.h.
+ """
+ nla_map = (
+ ("OVS_KEY_ATTR_UNSPEC", "none"),
+ ("OVS_KEY_ATTR_ENCAP", "none"), # placeholder, parsed by ovskey
+ ("OVS_KEY_ATTR_PRIORITY", "none"), # skb metadata, not in ENCAP
+ ("OVS_KEY_ATTR_IN_PORT", "none"), # skb metadata, not in ENCAP
+ ("OVS_KEY_ATTR_ETHERNET", "ethaddr"),
+ ("OVS_KEY_ATTR_VLAN", "be16"),
+ ("OVS_KEY_ATTR_ETHERTYPE", "be16"),
+ ("OVS_KEY_ATTR_IPV4", "ovs_key_ipv4"),
+ ("OVS_KEY_ATTR_IPV6", "ovs_key_ipv6"),
+ ("OVS_KEY_ATTR_TCP", "ovs_key_tcp"),
+ ("OVS_KEY_ATTR_UDP", "ovs_key_udp"),
+ ("OVS_KEY_ATTR_ICMP", "ovs_key_icmp"),
+ ("OVS_KEY_ATTR_ICMPV6", "ovs_key_icmpv6"),
+ ("OVS_KEY_ATTR_ARP", "ovs_key_arp"),
+ ("OVS_KEY_ATTR_ND", "ovs_key_nd"),
+ ("OVS_KEY_ATTR_SKB_MARK", "none"), # metadata, not in ENCAP
+ ("OVS_KEY_ATTR_TUNNEL", "none"), # tunnel metadata, not in ENCAP
+ ("OVS_KEY_ATTR_SCTP", "ovs_key_sctp"),
+ ("OVS_KEY_ATTR_TCP_FLAGS", "be16"),
+ ("OVS_KEY_ATTR_DP_HASH", "none"), # metadata, not in ENCAP
+ ("OVS_KEY_ATTR_RECIRC_ID", "none"), # metadata, not in ENCAP
+ ("OVS_KEY_ATTR_MPLS", "array(ovs_key_mpls)"),
+ )
+
+
class OvsPacket(GenericNetlinkSocket):
OVS_PACKET_CMD_MISS = 1 # Flow table miss
OVS_PACKET_CMD_ACTION = 2 # USERSPACE action
@@ -2583,6 +2886,7 @@ def print_ovsdp_full(dp_lookup_rep, ifindex, ndb=NDB(), vpl=OvsVport()):
def main(argv):
+ nlmsg_atoms.encap_ovskey = encap_ovskey
nlmsg_atoms.ovskey = ovskey
nlmsg_atoms.ovsactions = ovsactions
--
2.53.0
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [PATCH net-next v10 2/2] selftests: openvswitch: add pop_vlan test
2026-05-12 7:08 ` [PATCH net-next v10 0/2] " Minxi Hou
2026-05-12 7:08 ` [PATCH net-next v10 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
@ 2026-05-12 7:08 ` Minxi Hou
1 sibling, 0 replies; 11+ messages in thread
From: Minxi Hou @ 2026-05-12 7:08 UTC (permalink / raw)
To: netdev
Cc: dev, linux-kselftest, linux-kernel, aconole, echaudro, i.maximets,
davem, edumazet, kuba, pabeni, horms, shuah, Minxi Hou
Add test_pop_vlan() to verify OVS kernel datapath pop_vlan action
correctly strips 802.1Q VLAN tags from frames.
Test structure:
- Baseline: untagged forwarding validates basic connectivity.
- Negative: forward without pop_vlan, tagged frame is invisible
to ns2 (no VLAN sub-interface), ping fails.
- Positive: pop_vlan strips tag on forward path, push_vlan
restores tag on return path, ping succeeds.
Use static ARP entries to avoid VLAN-tagged ARP complexity.
Rely on ping success/failure for verification -- no tcpdump or
pcap files needed.
Signed-off-by: Minxi Hou <houminxi@gmail.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
---
.../selftests/net/openvswitch/openvswitch.sh | 78 +++++++++++++++++++
1 file changed, 78 insertions(+)
diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh
index 3cdd953f6813..8cd5b3d894ab 100755
--- a/tools/testing/selftests/net/openvswitch/openvswitch.sh
+++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh
@@ -28,6 +28,7 @@ tests="
tunnel_metadata ovs: test extraction of tunnel metadata
tunnel_refcount ovs: test tunnel vport reference cleanup
drop_reason drop: test drop reasons are emitted
+ pop_vlan vlan: POP_VLAN action strips tag
psample psample: Sampling packets with psample"
info() {
@@ -864,6 +865,83 @@ test_tunnel_refcount() {
ovs_wait dev_removed dp-${tun_type} || return 1
ovs_wait dev_removed ovs-${tun_type}0 || return 1
done
+
+ return 0
+}
+
+test_pop_vlan() {
+ local sbx="test_pop_vlan"
+ sbx_add "$sbx" || return $?
+ ovs_add_dp "$sbx" vlandp || return 1
+
+ ovs_add_netns_and_veths "$sbx" vlandp \
+ ns1 veth1 ns1veth 192.0.2.1/24 || return 1
+ ovs_add_netns_and_veths "$sbx" vlandp \
+ ns2 veth2 ns2veth 192.0.2.2/24 || return 1
+
+ # Baseline: untagged bidirectional forwarding
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(1),eth(),eth_type(0x0800),ipv4()' '2' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(2),eth(),eth_type(0x0800),ipv4()' '1' || return 1
+ ovs_sbx "$sbx" ip netns exec ns1 ping -c 3 -W 2 \
+ 192.0.2.2 || return 1
+
+ # VLAN topology: ns1 uses VLAN sub-interface, ns2 is plain
+ ip -n ns1 link add link ns1veth name ns1veth.10 \
+ type vlan id 10 || return 1
+ on_exit "ip -n ns1 link del ns1veth.10 2>/dev/null"
+ ip -n ns1 addr add 198.51.100.1/24 dev ns1veth.10 || return 1
+ ip -n ns1 link set ns1veth.10 up || return 1
+ ip -n ns2 addr add 198.51.100.2/24 dev ns2veth || return 1
+
+ ovs_del_flows "$sbx" vlandp
+
+ # Static ARP: avoids VLAN-tagged ARP complexity
+ local ns1veth10mac ns2mac
+ ns1veth10mac=$(ip -n ns1 link show ns1veth.10 \
+ | awk '/link\/ether/ {print $2}')
+ [ -z "$ns1veth10mac" ] && \
+ { info "failed to get ns1veth10mac"; return 1; }
+ ns2mac=$(ip -n ns2 link show ns2veth \
+ | awk '/link\/ether/ {print $2}')
+ [ -z "$ns2mac" ] && \
+ { info "failed to get ns2mac"; return 1; }
+ ip -n ns1 neigh replace 198.51.100.2 lladdr "$ns2mac" \
+ dev ns1veth.10 nud permanent || return 1
+ ip -n ns2 neigh replace 198.51.100.1 \
+ lladdr "$ns1veth10mac" \
+ dev ns2veth nud permanent || return 1
+
+ local vlan_match='in_port(1),eth(),eth_type(0x8100),'
+ vlan_match+='vlan(vid=10),'
+ vlan_match+='encap(eth_type(0x0800),'
+ vlan_match+='ipv4(src=198.51.100.1,proto=1),icmp())'
+
+ # Negative: forward without pop_vlan -- tagged frame
+ # is invisible to ns2 (no VLAN sub-interface), ping fails
+ ovs_add_flow "$sbx" vlandp "$vlan_match" '2' || return 1
+ ovs_sbx "$sbx" ip netns exec ns1 ping -I ns1veth.10 \
+ -c 3 -W 1 198.51.100.2 >/dev/null 2>&1 \
+ && { info "FAIL: ping should fail without pop_vlan"
+ return 1; }
+
+ ovs_del_flows "$sbx" vlandp
+
+ # Positive: pop_vlan strips tag on forward path,
+ # push_vlan restores tag on return path -- ping succeeds
+ ovs_add_flow "$sbx" vlandp \
+ "$vlan_match" 'pop_vlan,2' || return 1
+ ovs_add_flow "$sbx" vlandp \
+ 'in_port(2),eth(),eth_type(0x0800),ipv4()' \
+ 'push_vlan(vid=10,pcp=0,tpid=0x8100),1' || return 1
+ ovs_sbx "$sbx" ip netns exec ns1 ping -I ns1veth.10 \
+ -c 3 -W 2 198.51.100.2 || return 1
+
return 0
}
--
2.53.0
^ permalink raw reply related [flat|nested] 11+ messages in thread
* Re: [PATCH net-next v10 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing
2026-05-12 7:08 ` [PATCH net-next v10 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
@ 2026-05-15 0:20 ` patchwork-bot+netdevbpf
0 siblings, 0 replies; 11+ messages in thread
From: patchwork-bot+netdevbpf @ 2026-05-15 0:20 UTC (permalink / raw)
To: Minxi Hou
Cc: netdev, dev, linux-kselftest, linux-kernel, aconole, echaudro,
i.maximets, davem, edumazet, kuba, pabeni, horms, shuah
Hello:
This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Tue, 12 May 2026 15:08:40 +0800 you wrote:
> Add VLAN TCI formatting and parsing support to ovs-dpctl.py:
>
> - Add _vlan_dpstr() to decompose TCI into vid/pcp/cfi fields,
> with raw tci=0x%04x fallback when cfi=0 for round-trip safety.
> - Add _parse_vlan_from_flowstr() boundary check for missing ')'.
> - Add encap_ovskey subclass restricting nla_map to L2-L4 attributes
> (slots 0-21) that appear inside 802.1Q ENCAP, with metadata
> attributes set to "none".
> - Check encap parse() return value for unrecognized trailing content.
> - Support callable format functions in dpstr() output.
> - Change OVS_KEY_ATTR_VLAN type from uint16 to be16 to match the
> kernel __be16 wire format; uint16 decodes in host byte order,
> which gives wrong values on little-endian architectures.
> - Change OVS_KEY_ATTR_ENCAP type from none to encap_ovskey to
> enable recursive parsing of 802.1Q encapsulated flow keys.
> - Add push_vlan action class with fields matching kernel struct
> ovs_action_push_vlan (vlan_tpid, vlan_tci as network-order u16).
> - Add push_vlan dpstr format and parse with range validation
> (vid 0-4095, pcp 0-7, tpid 0-0xFFFF) and CFI forced to 1.
>
> [...]
Here is the summary with links:
- [net-next,v10,1/2] selftests: openvswitch: add vlan() and encap() flow string parsing
https://git.kernel.org/netdev/net-next/c/db30e412b7f5
- [net-next,v10,2/2] selftests: openvswitch: add pop_vlan test
https://git.kernel.org/netdev/net-next/c/2476e005b13a
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html
^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2026-05-15 0:21 UTC | newest]
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2026-05-09 13:54 [PATCH net-next v9 0/2] selftests: openvswitch: add pop_vlan test Minxi Hou
2026-05-09 13:54 ` [PATCH net-next v9 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
2026-05-09 13:54 ` [PATCH net-next v9 2/2] selftests: openvswitch: add pop_vlan test Minxi Hou
2026-05-11 12:05 ` [PATCH net-next v9 0/2] " Minxi Hou
2026-05-12 6:38 ` [PATCH net-next v10 " Minxi Hou
2026-05-12 6:38 ` [PATCH v10 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
2026-05-12 6:38 ` [PATCH v10 2/2] selftests: openvswitch: add pop_vlan test Minxi Hou
2026-05-12 7:08 ` [PATCH net-next v10 0/2] " Minxi Hou
2026-05-12 7:08 ` [PATCH net-next v10 1/2] selftests: openvswitch: add vlan() and encap() flow string parsing Minxi Hou
2026-05-15 0:20 ` patchwork-bot+netdevbpf
2026-05-12 7:08 ` [PATCH net-next v10 2/2] selftests: openvswitch: add pop_vlan test Minxi Hou
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