Merge tag 'net-6.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from netfilter and bpf.

  Current release - regressions:

   - core: avoid skb end_offset change in __skb_unclone_keeptruesize()

   - sched:
      - act_connmark: handle errno on tcf_idr_check_alloc
      - flower: fix fl_change() error recovery path

   - ieee802154: prevent user from crashing the host

  Current release - new code bugs:

   - eth: bnxt_en: fix the double free during device removal

   - tools: ynl:
      - fix enum-as-flags in the generic CLI
      - fully inherit attrs in subsets
      - re-license uniformly under GPL-2.0 or BSD-3-clause

  Previous releases - regressions:

   - core: use indirect calls helpers for sk_exit_memory_pressure()

   - tls:
      - fix return value for async crypto
      - avoid hanging tasks on the tx_lock

   - eth: ice: copy last block omitted in ice_get_module_eeprom()

  Previous releases - always broken:

   - core: avoid double iput when sock_alloc_file fails

   - af_unix: fix struct pid leaks in OOB support

   - tls:
      - fix possible race condition
      - fix device-offloaded sendpage straddling records

   - bpf:
      - sockmap: fix an infinite loop error
      - test_run: fix &xdp_frame misplacement for LIVE_FRAMES
      - fix resolving BTF_KIND_VAR after ARRAY, STRUCT, UNION, PTR

   - netfilter: tproxy: fix deadlock due to missing BH disable

   - phylib: get rid of unnecessary locking

   - eth: bgmac: fix *initial* chip reset to support BCM5358

   - eth: nfp: fix csum for ipsec offload

   - eth: mtk_eth_soc: fix RX data corruption issue

  Misc:

   - usb: qmi_wwan: add telit 0x1080 composition"

* tag 'net-6.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (64 commits)
  tools: ynl: fix enum-as-flags in the generic CLI
  tools: ynl: move the enum classes to shared code
  net: avoid double iput when sock_alloc_file fails
  af_unix: fix struct pid leaks in OOB support
  eth: fealnx: bring back this old driver
  net: dsa: mt7530: permit port 5 to work without port 6 on MT7621 SoC
  net: microchip: sparx5: fix deletion of existing DSCP mappings
  octeontx2-af: Unlock contexts in the queue context cache in case of fault detection
  net/smc: fix fallback failed while sendmsg with fastopen
  ynl: re-license uniformly under GPL-2.0 OR BSD-3-Clause
  mailmap: update entries for Stephen Hemminger
  mailmap: add entry for Maxim Mikityanskiy
  nfc: change order inside nfc_se_io error path
  ethernet: ice: avoid gcc-9 integer overflow warning
  ice: don't ignore return codes in VSI related code
  ice: Fix DSCP PFC TLV creation
  net: usb: qmi_wwan: add Telit 0x1080 composition
  net: usb: cdc_mbim: avoid altsetting toggling for Telit FE990
  netfilter: conntrack: adopt safer max chain length
  net: tls: fix device-offloaded sendpage straddling records
  ...

10 files changed, 192 insertions, 120 deletions

diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h
index 588391447bfb..8c4e3e536c04 100644
--- a/tools/include/uapi/linux/netdev.h
+++ b/tools/include/uapi/linux/netdev.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause */
 /* Do not edit directly, auto-generated from: */
 /*	Documentation/netlink/specs/netdev.yaml */
 /* YNL-GEN uapi header */
diff --git a/tools/net/ynl/cli.py b/tools/net/ynl/cli.py
index db410b74d539..ffaa8038aa8c 100755
--- a/tools/net/ynl/cli.py
+++ b/tools/net/ynl/cli.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# SPDX-License-Identifier: BSD-3-Clause
+# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 
 import argparse
 import json
diff --git a/tools/net/ynl/lib/__init__.py b/tools/net/ynl/lib/__init__.py
index 3c73f59eabab..4b3797fe784b 100644
--- a/tools/net/ynl/lib/__init__.py
+++ b/tools/net/ynl/lib/__init__.py
@@ -1,7 +1,8 @@
-# SPDX-License-Identifier: BSD-3-Clause
+# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 
-from .nlspec import SpecAttr, SpecAttrSet, SpecFamily, SpecOperation
+from .nlspec import SpecAttr, SpecAttrSet, SpecEnumEntry, SpecEnumSet, \
+    SpecFamily, SpecOperation
 from .ynl import YnlFamily
 
-__all__ = ["SpecAttr", "SpecAttrSet", "SpecFamily", "SpecOperation",
-           "YnlFamily"]
+__all__ = ["SpecAttr", "SpecAttrSet", "SpecEnumEntry", "SpecEnumSet",
+           "SpecFamily", "SpecOperation", "YnlFamily"]
diff --git a/tools/net/ynl/lib/nlspec.py b/tools/net/ynl/lib/nlspec.py
index 71da568e2c28..a34d088f6743 100644
--- a/tools/net/ynl/lib/nlspec.py
+++ b/tools/net/ynl/lib/nlspec.py
@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: BSD-3-Clause
+# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 
 import collections
 import importlib
@@ -57,6 +57,94 @@ class SpecElement:
         pass
 
 
+class SpecEnumEntry(SpecElement):
+    """ Entry within an enum declared in the Netlink spec.
+
+    Attributes:
+        doc         documentation string
+        enum_set    back reference to the enum
+        value       numerical value of this enum (use accessors in most situations!)
+
+    Methods:
+        raw_value   raw value, i.e. the id in the enum, unlike user value which is a mask for flags
+        user_value   user value, same as raw value for enums, for flags it's the mask
+    """
+    def __init__(self, enum_set, yaml, prev, value_start):
+        if isinstance(yaml, str):
+            yaml = {'name': yaml}
+        super().__init__(enum_set.family, yaml)
+
+        self.doc = yaml.get('doc', '')
+        self.enum_set = enum_set
+
+        if 'value' in yaml:
+            self.value = yaml['value']
+        elif prev:
+            self.value = prev.value + 1
+        else:
+            self.value = value_start
+
+    def has_doc(self):
+        return bool(self.doc)
+
+    def raw_value(self):
+        return self.value
+
+    def user_value(self):
+        if self.enum_set['type'] == 'flags':
+            return 1 << self.value
+        else:
+            return self.value
+
+
+class SpecEnumSet(SpecElement):
+    """ Enum type
+
+    Represents an enumeration (list of numerical constants)
+    as declared in the "definitions" section of the spec.
+
+    Attributes:
+        type            enum or flags
+        entries         entries by name
+        entries_by_val  entries by value
+    Methods:
+        get_mask      for flags compute the mask of all defined values
+    """
+    def __init__(self, family, yaml):
+        super().__init__(family, yaml)
+
+        self.type = yaml['type']
+
+        prev_entry = None
+        value_start = self.yaml.get('value-start', 0)
+        self.entries = dict()
+        self.entries_by_val = dict()
+        for entry in self.yaml['entries']:
+            e = self.new_entry(entry, prev_entry, value_start)
+            self.entries[e.name] = e
+            self.entries_by_val[e.raw_value()] = e
+            prev_entry = e
+
+    def new_entry(self, entry, prev_entry, value_start):
+        return SpecEnumEntry(self, entry, prev_entry, value_start)
+
+    def has_doc(self):
+        if 'doc' in self.yaml:
+            return True
+        for entry in self.entries.values():
+            if entry.has_doc():
+                return True
+        return False
+
+    def get_mask(self):
+        mask = 0
+        idx = self.yaml.get('value-start', 0)
+        for _ in self.entries.values():
+            mask |= 1 << idx
+            idx += 1
+        return mask
+
+
 class SpecAttr(SpecElement):
     """ Single Netlink atttribute type
 
@@ -95,15 +183,22 @@ class SpecAttrSet(SpecElement):
         self.attrs = collections.OrderedDict()
         self.attrs_by_val = collections.OrderedDict()
 
-        val = 0
-        for elem in self.yaml['attributes']:
-            if 'value' in elem:
-                val = elem['value']
+        if self.subset_of is None:
+            val = 1
+            for elem in self.yaml['attributes']:
+                if 'value' in elem:
+                    val = elem['value']
 
-            attr = self.new_attr(elem, val)
-            self.attrs[attr.name] = attr
-            self.attrs_by_val[attr.value] = attr
-            val += 1
+                attr = self.new_attr(elem, val)
+                self.attrs[attr.name] = attr
+                self.attrs_by_val[attr.value] = attr
+                val += 1
+        else:
+            real_set = family.attr_sets[self.subset_of]
+            for elem in self.yaml['attributes']:
+                attr = real_set[elem['name']]
+                self.attrs[attr.name] = attr
+                self.attrs_by_val[attr.value] = attr
 
     def new_attr(self, elem, value):
         return SpecAttr(self.family, self, elem, value)
@@ -186,6 +281,7 @@ class SpecFamily(SpecElement):
         msgs       dict of all messages (index by name)
         msgs_by_value  dict of all messages (indexed by name)
         ops        dict of all valid requests / responses
+        consts     dict of all constants/enums
     """
     def __init__(self, spec_path, schema_path=None):
         with open(spec_path, "r") as stream:
@@ -215,6 +311,7 @@ class SpecFamily(SpecElement):
         self.req_by_value = collections.OrderedDict()
         self.rsp_by_value = collections.OrderedDict()
         self.ops = collections.OrderedDict()
+        self.consts = collections.OrderedDict()
 
         last_exception = None
         while len(self._resolution_list) > 0:
@@ -235,6 +332,9 @@ class SpecFamily(SpecElement):
             if len(resolved) == 0:
                 raise last_exception
 
+    def new_enum(self, elem):
+        return SpecEnumSet(self, elem)
+
     def new_attr_set(self, elem):
         return SpecAttrSet(self, elem)
 
@@ -245,7 +345,7 @@ class SpecFamily(SpecElement):
         self._resolution_list.append(elem)
 
     def _dictify_ops_unified(self):
-        val = 0
+        val = 1
         for elem in self.yaml['operations']['list']:
             if 'value' in elem:
                 val = elem['value']
@@ -256,7 +356,7 @@ class SpecFamily(SpecElement):
             self.msgs[op.name] = op
 
     def _dictify_ops_directional(self):
-        req_val = rsp_val = 0
+        req_val = rsp_val = 1
         for elem in self.yaml['operations']['list']:
             if 'notify' in elem:
                 if 'value' in elem:
@@ -289,6 +389,12 @@ class SpecFamily(SpecElement):
     def resolve(self):
         self.resolve_up(super())
 
+        for elem in self.yaml['definitions']:
+            if elem['type'] == 'enum' or elem['type'] == 'flags':
+                self.consts[elem['name']] = self.new_enum(elem)
+            else:
+                self.consts[elem['name']] = elem
+
         for elem in self.yaml['attribute-sets']:
             attr_set = self.new_attr_set(elem)
             self.attr_sets[elem['name']] = attr_set
diff --git a/tools/net/ynl/lib/ynl.py b/tools/net/ynl/lib/ynl.py
index 1c7411ee04dc..90764a83c646 100644
--- a/tools/net/ynl/lib/ynl.py
+++ b/tools/net/ynl/lib/ynl.py
@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: BSD-3-Clause
+# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 
 import functools
 import os
@@ -303,11 +303,6 @@ class YnlFamily(SpecFamily):
         self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_CAP_ACK, 1)
         self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_EXT_ACK, 1)
 
-        self._types = dict()
-
-        for elem in self.yaml.get('definitions', []):
-            self._types[elem['name']] = elem
-
         self.async_msg_ids = set()
         self.async_msg_queue = []
 
@@ -353,13 +348,13 @@ class YnlFamily(SpecFamily):
 
     def _decode_enum(self, rsp, attr_spec):
         raw = rsp[attr_spec['name']]
-        enum = self._types[attr_spec['enum']]
+        enum = self.consts[attr_spec['enum']]
         i = attr_spec.get('value-start', 0)
         if 'enum-as-flags' in attr_spec and attr_spec['enum-as-flags']:
             value = set()
             while raw:
                 if raw & 1:
-                    value.add(enum['entries'][i])
+                    value.add(enum.entries_by_val[i].name)
                 raw >>= 1
                 i += 1
         else:
diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py
index 274e9c566f61..1bcc5354d800 100755
--- a/tools/net/ynl/ynl-gen-c.py
+++ b/tools/net/ynl/ynl-gen-c.py
@@ -1,11 +1,12 @@
 #!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 
 import argparse
 import collections
 import os
 import yaml
 
-from lib import SpecFamily, SpecAttrSet, SpecAttr, SpecOperation
+from lib import SpecFamily, SpecAttrSet, SpecAttr, SpecOperation, SpecEnumSet, SpecEnumEntry
 
 
 def c_upper(name):
@@ -566,97 +567,37 @@ class Struct:
         self.inherited = [c_lower(x) for x in sorted(self._inherited)]
 
 
-class EnumEntry:
+class EnumEntry(SpecEnumEntry):
     def __init__(self, enum_set, yaml, prev, value_start):
-        if isinstance(yaml, str):
-            self.name = yaml
-            yaml = {}
-            self.doc = ''
-        else:
-            self.name = yaml['name']
-            self.doc = yaml.get('doc', '')
-
-        self.yaml = yaml
-        self.enum_set = enum_set
-        self.c_name = c_upper(enum_set.value_pfx + self.name)
-
-        if 'value' in yaml:
-            self.value = yaml['value']
-            if prev:
-                self.value_change = (self.value != prev.value + 1)
-        elif prev:
-            self.value_change = False
-            self.value = prev.value + 1
+        super().__init__(enum_set, yaml, prev, value_start)
+
+        if prev:
+            self.value_change = (self.value != prev.value + 1)
         else:
-            self.value = value_start
             self.value_change = (self.value != 0)
-
         self.value_change = self.value_change or self.enum_set['type'] == 'flags'
 
-    def __getitem__(self, key):
-        return self.yaml[key]
-
-    def __contains__(self, key):
-        return key in self.yaml
-
-    def has_doc(self):
-        return bool(self.doc)
+        # Added by resolve:
+        self.c_name = None
+        delattr(self, "c_name")
 
-    # raw value, i.e. the id in the enum, unlike user value which is a mask for flags
-    def raw_value(self):
-        return self.value
+    def resolve(self):
+        self.resolve_up(super())
 
-    # user value, same as raw value for enums, for flags it's the mask
-    def user_value(self):
-        if self.enum_set['type'] == 'flags':
-            return 1 << self.value
-        else:
-            return self.value
+        self.c_name = c_upper(self.enum_set.value_pfx + self.name)
 
 
-class EnumSet:
+class EnumSet(SpecEnumSet):
     def __init__(self, family, yaml):
-        self.yaml = yaml
-        self.family = family
-
         self.render_name = c_lower(family.name + '-' + yaml['name'])
         self.enum_name = 'enum ' + self.render_name
 
         self.value_pfx = yaml.get('name-prefix', f"{family.name}-{yaml['name']}-")
 
-        self.type = yaml['type']
-
-        prev_entry = None
-        value_start = self.yaml.get('value-start', 0)
-        self.entries = {}
-        self.entry_list = []
-        for entry in self.yaml['entries']:
-            e = EnumEntry(self, entry, prev_entry, value_start)
-            self.entries[e.name] = e
-            self.entry_list.append(e)
-            prev_entry = e
-
-    def __getitem__(self, key):
-        return self.yaml[key]
-
-    def __contains__(self, key):
-        return key in self.yaml
-
-    def has_doc(self):
-        if 'doc' in self.yaml:
-            return True
-        for entry in self.entry_list:
-            if entry.has_doc():
-                return True
-        return False
+        super().__init__(family, yaml)
 
-    def get_mask(self):
-        mask = 0
-        idx = self.yaml.get('value-start', 0)
-        for _ in self.entry_list:
-            mask |= 1 << idx
-            idx += 1
-        return mask
+    def new_entry(self, entry, prev_entry, value_start):
+        return EnumEntry(self, entry, prev_entry, value_start)
 
 
 class AttrSet(SpecAttrSet):
@@ -791,8 +732,6 @@ class Family(SpecFamily):
 
         self.mcgrps = self.yaml.get('mcast-groups', {'list': []})
 
-        self.consts = dict()
-
         self.hooks = dict()
         for when in ['pre', 'post']:
             self.hooks[when] = dict()
@@ -819,6 +758,9 @@ class Family(SpecFamily):
         if self.kernel_policy == 'global':
             self._load_global_policy()
 
+    def new_enum(self, elem):
+        return EnumSet(self, elem)
+
     def new_attr_set(self, elem):
         return AttrSet(self, elem)
 
@@ -836,12 +778,6 @@ class Family(SpecFamily):
                 }
 
     def _dictify(self):
-        for elem in self.yaml['definitions']:
-            if elem['type'] == 'enum' or elem['type'] == 'flags':
-                self.consts[elem['name']] = EnumSet(self, elem)
-            else:
-                self.consts[elem['name']] = elem
-
         ntf = []
         for msg in self.msgs.values():
             if 'notify' in msg:
@@ -1979,7 +1915,7 @@ def render_uapi(family, cw):
                 if 'doc' in enum:
                     doc = ' - ' + enum['doc']
                 cw.write_doc_line(enum.enum_name + doc)
-                for entry in enum.entry_list:
+                for entry in enum.entries.values():
                     if entry.has_doc():
                         doc = '@' + entry.c_name + ': ' + entry['doc']
                         cw.write_doc_line(doc)
@@ -1987,7 +1923,7 @@ def render_uapi(family, cw):
 
             uapi_enum_start(family, cw, const, 'name')
             name_pfx = const.get('name-prefix', f"{family.name}-{const['name']}-")
-            for entry in enum.entry_list:
+            for entry in enum.entries.values():
                 suffix = ','
                 if entry.value_change:
                     suffix = f" = {entry.user_value()}" + suffix
@@ -2044,14 +1980,17 @@ def render_uapi(family, cw):
     max_value = f"({cnt_name} - 1)"
 
     uapi_enum_start(family, cw, family['operations'], 'enum-name')
+    val = 0
     for op in family.msgs.values():
         if separate_ntf and ('notify' in op or 'event' in op):
             continue
 
         suffix = ','
-        if 'value' in op:
-            suffix = f" = {op['value']},"
+        if op.value != val:
+            suffix = f" = {op.value},"
+            val = op.value
         cw.p(op.enum_name + suffix)
+        val += 1
     cw.nl()
     cw.p(cnt_name + ('' if max_by_define else ','))
     if not max_by_define:
@@ -2124,12 +2063,12 @@ def main():
 
     _, spec_kernel = find_kernel_root(args.spec)
     if args.mode == 'uapi':
-        cw.p('/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */')
+        cw.p('/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause */')
     else:
         if args.header:
-            cw.p('/* SPDX-License-Identifier: BSD-3-Clause */')
+            cw.p('/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */')
         else:
-            cw.p('// SPDX-License-Identifier: BSD-3-Clause')
+            cw.p('// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause')
     cw.p("/* Do not edit directly, auto-generated from: */")
     cw.p(f"/*\t{spec_kernel} */")
     cw.p(f"/* YNL-GEN {args.mode} {'header' if args.header else 'source'} */")
diff --git a/tools/net/ynl/ynl-regen.sh b/tools/net/ynl/ynl-regen.sh
index 43989ae48ed0..74f5de1c2399 100755
--- a/tools/net/ynl/ynl-regen.sh
+++ b/tools/net/ynl/ynl-regen.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# SPDX-License-Identifier: BSD-3-Clause
+# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 
 TOOL=$(dirname $(realpath $0))/ynl-gen-c.py
 
diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index cbb600be943d..210d643fda6c 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -879,6 +879,34 @@ static struct btf_raw_test raw_tests[] = {
 	.btf_load_err = true,
 	.err_str = "Invalid elem",
 },
+{
+	.descr = "var after datasec, ptr followed by modifier",
+	.raw_types = {
+		/* .bss section */				/* [1] */
+		BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 2),
+			sizeof(void*)+4),
+		BTF_VAR_SECINFO_ENC(4, 0, sizeof(void*)),
+		BTF_VAR_SECINFO_ENC(6, sizeof(void*), 4),
+		/* int */					/* [2] */
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
+		/* int* */					/* [3] */
+		BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 2),
+		BTF_VAR_ENC(NAME_TBD, 3, 0),			/* [4] */
+		/* const int */					/* [5] */
+		BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 2),
+		BTF_VAR_ENC(NAME_TBD, 5, 0),			/* [6] */
+		BTF_END_RAW,
+	},
+	.str_sec = "\0a\0b\0c\0",
+	.str_sec_size = sizeof("\0a\0b\0c\0"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = ".bss",
+	.key_size = sizeof(int),
+	.value_size = sizeof(void*)+4,
+	.key_type_id = 0,
+	.value_type_id = 1,
+	.max_entries = 1,
+},
 /* Test member exceeds the size of struct.
  *
  * struct A {
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c b/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
index 2666c84dbd01..7271a18ab3e2 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
@@ -65,12 +65,13 @@ static int attach_tc_prog(struct bpf_tc_hook *hook, int fd)
 }
 
 /* The maximum permissible size is: PAGE_SIZE - sizeof(struct xdp_page_head) -
- * sizeof(struct skb_shared_info) - XDP_PACKET_HEADROOM = 3368 bytes
+ * SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) - XDP_PACKET_HEADROOM =
+ * 3408 bytes for 64-byte cacheline and 3216 for 256-byte one.
  */
 #if defined(__s390x__)
-#define MAX_PKT_SIZE 3176
+#define MAX_PKT_SIZE 3216
 #else
-#define MAX_PKT_SIZE 3368
+#define MAX_PKT_SIZE 3408
 #endif
 static void test_max_pkt_size(int fd)
 {
diff --git a/tools/testing/selftests/netfilter/nft_nat.sh b/tools/testing/selftests/netfilter/nft_nat.sh
index 924ecb3f1f73..dd40d9f6f259 100755
--- a/tools/testing/selftests/netfilter/nft_nat.sh
+++ b/tools/testing/selftests/netfilter/nft_nat.sh
@@ -404,6 +404,8 @@ EOF
 	echo SERVER-$family | ip netns exec "$ns1" timeout 5 socat -u STDIN TCP-LISTEN:2000 &
 	sc_s=$!
 
+	sleep 1
+
 	result=$(ip netns exec "$ns0" timeout 1 socat TCP:$daddr:2000 STDOUT)
 
 	if [ "$result" = "SERVER-inet" ];then