[PATCH mptcp-next v4 0/6] mptcp: convert netlink code to use YAML spec

[PATCH mptcp-next v4 0/6] mptcp: convert netlink code to use YAML spec

[Davide Caratti]

this series converts most of the MPTCP netlink interface (plus uAPI bits)
to use sources generated by a YAML spec file. Patch 2/6 and 6/6 have been
individually verified with kselftests.

POC:

 $ sudo  ./tools/net/ynl/cli.py  --spec \
 > Documentation/netlink/specs/mptcp.yaml --do add_addr \
 > --json '{"addr": {"addr4": 16909061, "family": 2, "flags": 4, "id": 10, "port": 0}}'

 $ ip -j mptcp endpoint show id 10
 [{"address":"1.2.3.5","id":10,"backup":true}]

v4:
- removed unwanted whitespaces, update MAINTAINERS (Matthieu Baerts)

v3:
- add missing 'static' keyword (MPTCP CI)
- fix element ordering for 'attr' attributes in patch 2,
  mptcp spec and generated C code (Paolo Abeni)
- removed extra newline, deuglified subjects in patch 2 and 4

v2:
- mptcp.yaml: only put values around enum "holes" (Paolo Abeni)
-  _doit and _dumpit renames are done in a dedicate patch (Paolo Abeni)
- removed useless nla_policy passed through parse_entry()  (Paolo Abeni)
- renamed mptcp_pm_address_nl_policy in patch 2 (Paolo Abeni)
- (hopefully) more comprehensible commit messages (Paolo Abeni)


Davide Caratti (6):
  tools: ynl: add uns-admin-perm to genetlink legacy
  net: mptcp: convert netlink from small_ops to ops
  Documentation: netlink: add a YAML spec for mptcp
  uapi: mptcp: use header file generated from YAML spec
  net: mptcp: rename netlink handlers to
    mptcp_pm_nl_<blah>_{doit,dumpit}
  net: mptcp: use policy generated by YAML spec

 Documentation/netlink/genetlink-legacy.yaml |   2 +-
 Documentation/netlink/specs/mptcp.yaml      | 394 ++++++++++++++++++++
 MAINTAINERS                                 |   3 +-
 include/uapi/linux/mptcp.h                  | 174 +--------
 include/uapi/linux/mptcp_pm.h               | 149 ++++++++
 net/mptcp/Makefile                          |   3 +-
 net/mptcp/mptcp_pm_gen.c                    | 179 +++++++++
 net/mptcp/mptcp_pm_gen.h                    |  58 +++
 net/mptcp/pm_netlink.c                      | 114 +-----
 net/mptcp/pm_userspace.c                    |   8 +-
 net/mptcp/protocol.h                        |   6 +-
 11 files changed, 816 insertions(+), 274 deletions(-)
 create mode 100644 Documentation/netlink/specs/mptcp.yaml
 create mode 100644 include/uapi/linux/mptcp_pm.h
 create mode 100644 net/mptcp/mptcp_pm_gen.c
 create mode 100644 net/mptcp/mptcp_pm_gen.h

-- 
2.41.0

[PATCH mptcp-next v4 1/6] tools: ynl: add uns-admin-perm to genetlink legacy

[Davide Caratti]

this flag maps to GENL_UNS_ADMIN_PERM and will be used by future specs.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 Documentation/netlink/genetlink-legacy.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/netlink/genetlink-legacy.yaml b/Documentation/netlink/genetlink-legacy.yaml
index 12a0a045605d..c08e5e3a0aaa 100644
--- a/Documentation/netlink/genetlink-legacy.yaml
+++ b/Documentation/netlink/genetlink-legacy.yaml
@@ -316,7 +316,7 @@ properties:
               description: Command flags.
               type: array
               items:
-                enum: [ admin-perm ]
+                enum: [ admin-perm, uns-admin-perm ]
             dont-validate:
               description: Kernel attribute validation flags.
               type: array
-- 
2.41.0

[PATCH mptcp-next v4 2/6] net: mptcp: convert netlink from small_ops to ops

[Davide Caratti]

in the current MPTCP control plane, all operations use a netlink
attribute of the same type "MPTCP_PM_ATTR". However, add/del/get/flush
operations only parse the first element in the message _ the one that
describes MPTCP endpoints (that was named MPTCP_PM_ATTR_ADDR and
mostly used in ADD_ADDR operations _ probably the similarity of "attr",
"addr" and "add" might cause some confusion to human readers).
Convert MPTCP from 'small_ops' to 'ops', thus allowing different attributes
for each single operation, hopefully makes all this clearer to human
readers.

- use a separate attribute set for add/del/get/flush address operation,
  binary compatible with the existing one, to store the endpoint address.
  MPTCP_PM_ENDPOINT_ADDR is added to the uAPI (with the same value as
  MPTCP_PM_ATTR_ADDR) for these operations.
- convert mptcp_pm_ops[] and add policy files accordingly.

this prepares MPTCP control plane to be described as YAML spec.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/340
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 include/uapi/linux/mptcp.h |   8 ++
 net/mptcp/pm_netlink.c     | 191 ++++++++++++++++++++++++-------------
 2 files changed, 135 insertions(+), 64 deletions(-)

diff --git a/include/uapi/linux/mptcp.h b/include/uapi/linux/mptcp.h
index ee9c49f949a2..0e62937ab17c 100644
--- a/include/uapi/linux/mptcp.h
+++ b/include/uapi/linux/mptcp.h
@@ -65,6 +65,14 @@ enum {
 
 #define MPTCP_PM_ATTR_MAX (__MPTCP_PM_ATTR_MAX - 1)
 
+enum {
+	MPTCP_PM_ENDPOINT_ADDR = 1,
+
+	__MPTCP_PM_ENDPOINT_MAX
+};
+
+#define MPTCP_PM_ENDPOINT_MAX (__MPTCP_PM_ENDPOINT_MAX - 1)
+
 enum {
 	MPTCP_PM_ADDR_ATTR_UNSPEC,
 
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 9661f3812682..32976cf7c82b 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -48,6 +48,60 @@ struct pm_nl_pernet {
 #define MPTCP_PM_ADDR_MAX	8
 #define ADD_ADDR_RETRANS_MAX	3
 
+static
+const struct nla_policy mptcp_pm_address_nl_policy[MPTCP_PM_ADDR_ATTR_IF_IDX + 1] = {
+	[MPTCP_PM_ADDR_ATTR_FAMILY] = { .type = NLA_U16, },
+	[MPTCP_PM_ADDR_ATTR_ID] = { .type = NLA_U8, },
+	[MPTCP_PM_ADDR_ATTR_ADDR4] = { .type = NLA_U32, },
+	[MPTCP_PM_ADDR_ATTR_ADDR6] = { .len = 16, },
+	[MPTCP_PM_ADDR_ATTR_PORT] = { .type = NLA_U16, },
+	[MPTCP_PM_ADDR_ATTR_FLAGS] = { .type = NLA_U32, },
+	[MPTCP_PM_ADDR_ATTR_IF_IDX] = { .type = NLA_S32, },
+};
+
+/* MPTCP_PM_CMD_ADD_ADDR / DEL / GET / FLUSH - do */
+static
+const struct nla_policy mptcp_pm_endpoint_nl_policy[MPTCP_PM_ENDPOINT_ADDR + 1] = {
+	[MPTCP_PM_ENDPOINT_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+};
+
+/* MPTCP_PM_CMD_SET_LIMITS - do */
+static
+const struct nla_policy mptcp_pm_set_limits_nl_policy[MPTCP_PM_ATTR_SUBFLOWS + 1] = {
+	[MPTCP_PM_ATTR_RCV_ADD_ADDRS] = { .type = NLA_U32, },
+	[MPTCP_PM_ATTR_SUBFLOWS] = { .type = NLA_U32, },
+};
+
+/* MPTCP_PM_CMD_SET_FLAGS - do */
+static
+const struct nla_policy mptcp_pm_set_flags_nl_policy[MPTCP_PM_ATTR_ADDR_REMOTE + 1] = {
+	[MPTCP_PM_ATTR_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
+	[MPTCP_PM_ATTR_ADDR_REMOTE] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+};
+
+/* MPTCP_PM_CMD_ANNOUNCE - do */
+static
+const struct nla_policy mptcp_pm_announce_nl_policy[MPTCP_PM_ATTR_TOKEN + 1] = {
+	[MPTCP_PM_ATTR_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
+};
+
+/* MPTCP_PM_CMD_REMOVE - do */
+static
+const struct nla_policy mptcp_pm_remove_nl_policy[MPTCP_PM_ATTR_LOC_ID + 1] = {
+	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
+	[MPTCP_PM_ATTR_LOC_ID] = { .type = NLA_U8, },
+};
+
+/* MPTCP_PM_CMD_SUBFLOW_CREATE / DESTROY - do */
+static
+const struct nla_policy mptcp_pm_subflow_create_nl_policy[MPTCP_PM_ATTR_ADDR_REMOTE + 1] = {
+	[MPTCP_PM_ATTR_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
+	[MPTCP_PM_ATTR_ADDR_REMOTE] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+};
+
 static struct pm_nl_pernet *pm_nl_get_pernet(const struct net *net)
 {
 	return net_generic(net, pm_nl_pernet_id);
@@ -1104,29 +1158,6 @@ static const struct genl_multicast_group mptcp_pm_mcgrps[] = {
 					  },
 };
 
-static const struct nla_policy
-mptcp_pm_addr_policy[MPTCP_PM_ADDR_ATTR_MAX + 1] = {
-	[MPTCP_PM_ADDR_ATTR_FAMILY]	= { .type	= NLA_U16,	},
-	[MPTCP_PM_ADDR_ATTR_ID]		= { .type	= NLA_U8,	},
-	[MPTCP_PM_ADDR_ATTR_ADDR4]	= { .type	= NLA_U32,	},
-	[MPTCP_PM_ADDR_ATTR_ADDR6]	=
-		NLA_POLICY_EXACT_LEN(sizeof(struct in6_addr)),
-	[MPTCP_PM_ADDR_ATTR_PORT]	= { .type	= NLA_U16	},
-	[MPTCP_PM_ADDR_ATTR_FLAGS]	= { .type	= NLA_U32	},
-	[MPTCP_PM_ADDR_ATTR_IF_IDX]     = { .type	= NLA_S32	},
-};
-
-static const struct nla_policy mptcp_pm_policy[MPTCP_PM_ATTR_MAX + 1] = {
-	[MPTCP_PM_ATTR_ADDR]		=
-					NLA_POLICY_NESTED(mptcp_pm_addr_policy),
-	[MPTCP_PM_ATTR_RCV_ADD_ADDRS]	= { .type	= NLA_U32,	},
-	[MPTCP_PM_ATTR_SUBFLOWS]	= { .type	= NLA_U32,	},
-	[MPTCP_PM_ATTR_TOKEN]		= { .type	= NLA_U32,	},
-	[MPTCP_PM_ATTR_LOC_ID]		= { .type	= NLA_U8,	},
-	[MPTCP_PM_ATTR_ADDR_REMOTE]	=
-					NLA_POLICY_NESTED(mptcp_pm_addr_policy),
-};
-
 void mptcp_pm_nl_subflow_chk_stale(const struct mptcp_sock *msk, struct sock *ssk)
 {
 	struct mptcp_subflow_context *iter, *subflow = mptcp_subflow_ctx(ssk);
@@ -1188,7 +1219,7 @@ static int mptcp_pm_parse_pm_addr_attr(struct nlattr *tb[],
 
 	/* no validation needed - was already done via nested policy */
 	err = nla_parse_nested_deprecated(tb, MPTCP_PM_ADDR_ATTR_MAX, attr,
-					  mptcp_pm_addr_policy, info->extack);
+					  mptcp_pm_address_nl_policy, info->extack);
 	if (err)
 		return err;
 
@@ -1305,7 +1336,7 @@ static int mptcp_nl_add_subflow_or_signal_addr(struct net *net)
 
 static int mptcp_nl_cmd_add_addr(struct sk_buff *skb, struct genl_info *info)
 {
-	struct nlattr *attr = info->attrs[MPTCP_PM_ATTR_ADDR];
+	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
 	struct mptcp_pm_addr_entry addr, *entry;
 	int ret;
@@ -1486,7 +1517,7 @@ static int mptcp_nl_remove_id_zero_address(struct net *net,
 
 static int mptcp_nl_cmd_del_addr(struct sk_buff *skb, struct genl_info *info)
 {
-	struct nlattr *attr = info->attrs[MPTCP_PM_ATTR_ADDR];
+	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
 	struct mptcp_pm_addr_entry addr, *entry;
 	unsigned int addr_max;
@@ -1677,7 +1708,7 @@ static int mptcp_nl_fill_addr(struct sk_buff *skb,
 
 static int mptcp_nl_cmd_get_addr(struct sk_buff *skb, struct genl_info *info)
 {
-	struct nlattr *attr = info->attrs[MPTCP_PM_ATTR_ADDR];
+	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
 	struct mptcp_pm_addr_entry addr, *entry;
 	struct sk_buff *msg;
@@ -2283,72 +2314,104 @@ void mptcp_event(enum mptcp_event_type type, const struct mptcp_sock *msk,
 	nlmsg_free(skb);
 }
 
-static const struct genl_small_ops mptcp_pm_ops[] = {
+static const struct genl_ops mptcp_pm_ops[] = {
 	{
-		.cmd    = MPTCP_PM_CMD_ADD_ADDR,
-		.doit   = mptcp_nl_cmd_add_addr,
-		.flags  = GENL_UNS_ADMIN_PERM,
+		.cmd		= MPTCP_PM_CMD_ADD_ADDR,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_add_addr,
+		.policy		= mptcp_pm_endpoint_nl_policy,
+		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
+		.flags		= GENL_UNS_ADMIN_PERM,
 	},
 	{
-		.cmd    = MPTCP_PM_CMD_DEL_ADDR,
-		.doit   = mptcp_nl_cmd_del_addr,
-		.flags  = GENL_UNS_ADMIN_PERM,
+		.cmd		= MPTCP_PM_CMD_DEL_ADDR,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_del_addr,
+		.policy		= mptcp_pm_endpoint_nl_policy,
+		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
+		.flags		= GENL_UNS_ADMIN_PERM,
 	},
 	{
-		.cmd    = MPTCP_PM_CMD_FLUSH_ADDRS,
-		.doit   = mptcp_nl_cmd_flush_addrs,
-		.flags  = GENL_UNS_ADMIN_PERM,
+		.cmd		= MPTCP_PM_CMD_GET_ADDR,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_get_addr,
+		.dumpit		= mptcp_nl_cmd_dump_addrs,
+		.policy		= mptcp_pm_endpoint_nl_policy,
+		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
+		.flags		= GENL_UNS_ADMIN_PERM,
 	},
 	{
-		.cmd    = MPTCP_PM_CMD_GET_ADDR,
-		.doit   = mptcp_nl_cmd_get_addr,
-		.dumpit   = mptcp_nl_cmd_dump_addrs,
+		.cmd		= MPTCP_PM_CMD_FLUSH_ADDRS,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_flush_addrs,
+		.policy		= mptcp_pm_endpoint_nl_policy,
+		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
+		.flags		= GENL_UNS_ADMIN_PERM,
 	},
 	{
-		.cmd    = MPTCP_PM_CMD_SET_LIMITS,
-		.doit   = mptcp_nl_cmd_set_limits,
-		.flags  = GENL_UNS_ADMIN_PERM,
+		.cmd		= MPTCP_PM_CMD_SET_LIMITS,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_set_limits,
+		.policy		= mptcp_pm_set_limits_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_SUBFLOWS,
+		.flags		= GENL_UNS_ADMIN_PERM,
 	},
 	{
-		.cmd    = MPTCP_PM_CMD_GET_LIMITS,
-		.doit   = mptcp_nl_cmd_get_limits,
+		.cmd		= MPTCP_PM_CMD_GET_LIMITS,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_get_limits,
+		.policy		= mptcp_pm_set_limits_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_SUBFLOWS,
 	},
 	{
-		.cmd    = MPTCP_PM_CMD_SET_FLAGS,
-		.doit   = mptcp_nl_cmd_set_flags,
-		.flags  = GENL_UNS_ADMIN_PERM,
+		.cmd		= MPTCP_PM_CMD_SET_FLAGS,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_set_flags,
+		.policy		= mptcp_pm_set_flags_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
+		.flags		= GENL_UNS_ADMIN_PERM,
 	},
 	{
-		.cmd    = MPTCP_PM_CMD_ANNOUNCE,
-		.doit   = mptcp_nl_cmd_announce,
-		.flags  = GENL_UNS_ADMIN_PERM,
+		.cmd		= MPTCP_PM_CMD_ANNOUNCE,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_announce,
+		.policy		= mptcp_pm_announce_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_TOKEN,
+		.flags		= GENL_UNS_ADMIN_PERM,
 	},
 	{
-		.cmd    = MPTCP_PM_CMD_REMOVE,
-		.doit   = mptcp_nl_cmd_remove,
-		.flags  = GENL_UNS_ADMIN_PERM,
+		.cmd		= MPTCP_PM_CMD_REMOVE,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_remove,
+		.policy		= mptcp_pm_remove_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_LOC_ID,
+		.flags		= GENL_UNS_ADMIN_PERM,
 	},
 	{
-		.cmd    = MPTCP_PM_CMD_SUBFLOW_CREATE,
-		.doit   = mptcp_nl_cmd_sf_create,
-		.flags  = GENL_UNS_ADMIN_PERM,
+		.cmd		= MPTCP_PM_CMD_SUBFLOW_CREATE,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_sf_create,
+		.policy		= mptcp_pm_subflow_create_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
+		.flags		= GENL_UNS_ADMIN_PERM,
 	},
 	{
-		.cmd    = MPTCP_PM_CMD_SUBFLOW_DESTROY,
-		.doit   = mptcp_nl_cmd_sf_destroy,
-		.flags  = GENL_UNS_ADMIN_PERM,
+		.cmd		= MPTCP_PM_CMD_SUBFLOW_DESTROY,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_nl_cmd_sf_destroy,
+		.policy		= mptcp_pm_subflow_create_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
+		.flags		= GENL_UNS_ADMIN_PERM,
 	},
 };
 
 static struct genl_family mptcp_genl_family __ro_after_init = {
 	.name		= MPTCP_PM_NAME,
 	.version	= MPTCP_PM_VER,
-	.maxattr	= MPTCP_PM_ATTR_MAX,
-	.policy		= mptcp_pm_policy,
 	.netnsok	= true,
 	.module		= THIS_MODULE,
-	.small_ops	= mptcp_pm_ops,
-	.n_small_ops	= ARRAY_SIZE(mptcp_pm_ops),
+	.ops		= mptcp_pm_ops,
+	.n_ops		= ARRAY_SIZE(mptcp_pm_ops),
 	.resv_start_op	= MPTCP_PM_CMD_SUBFLOW_DESTROY + 1,
 	.mcgrps		= mptcp_pm_mcgrps,
 	.n_mcgrps	= ARRAY_SIZE(mptcp_pm_mcgrps),
-- 
2.41.0

[PATCH mptcp-next v4 3/6] Documentation: netlink: add a YAML spec for mptcp

[Davide Caratti]

it describes most of the current netlink interface (uAPI definitions,
doit/dumpit operations and attributes)

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/340
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 Documentation/netlink/specs/mptcp.yaml | 394 +++++++++++++++++++++++++
 MAINTAINERS                            |   1 +
 2 files changed, 395 insertions(+)
 create mode 100644 Documentation/netlink/specs/mptcp.yaml

diff --git a/Documentation/netlink/specs/mptcp.yaml b/Documentation/netlink/specs/mptcp.yaml
new file mode 100644
index 000000000000..f8ebcd009592
--- /dev/null
+++ b/Documentation/netlink/specs/mptcp.yaml
@@ -0,0 +1,394 @@
+# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
+
+name: mptcp_pm
+protocol: genetlink-legacy
+doc: Multipath TCP.
+
+c-family-name: mptcp_pm_name
+c-version-name: mptcp_pm_ver
+max-by-define: true
+kernel-policy: per-op
+
+definitions:
+  -
+    type: enum
+    name: event-type
+    enum-name: mptcp_event_type
+    name-prefix: mptcp_event_
+    entries:
+     -
+      name: unspec
+      value: 0
+     -
+      name: created
+      doc:
+        token, family, saddr4 | saddr6, daddr4 | daddr6, sport, dport
+        A new MPTCP connection has been created. It is the good time to
+        allocate memory and send ADD_ADDR if needed. Depending on the
+        traffic-patterns it can take a long time until the
+        MPTCP_EVENT_ESTABLISHED is sent.
+     -
+      name: established
+      doc:
+        token, family, saddr4 | saddr6, daddr4 | daddr6, sport, dport
+        A MPTCP connection is established (can start new subflows).
+     -
+      name: closed
+      doc:
+        token
+        A MPTCP connection has stopped.
+     -
+      name: announced
+      value: 6
+      doc:
+        token, rem_id, family, daddr4 | daddr6 [, dport]
+        A new address has been announced by the peer.
+     -
+      name: removed
+      value: 7
+      doc:
+        token, rem_id
+        An address has been lost by the peer.
+     -
+      name: sub_established
+      value: 10
+      doc:
+        token, family, loc_id, rem_id, saddr4 | saddr6, daddr4 | daddr6, sport,
+        dport, backup, if_idx [, error]
+        A new subflow has been established. 'error' should not be set.
+     -
+      name: sub_closed
+      value: 11
+      doc:
+        token, family, loc_id, rem_id, saddr4 | saddr6, daddr4 | daddr6, sport,
+        dport, backup, if_idx [, error]
+        A subflow has been closed. An error (copy of sk_err) could be set if an
+        error has been detected for this subflow.
+     -
+      name: sub_priority
+      value: 13
+      doc:
+        token, family, loc_id, rem_id, saddr4 | saddr6, daddr4 | daddr6, sport,
+        dport, backup, if_idx [, error]
+        The priority of a subflow has changed. 'error' should not be set.
+     -
+      name: listener_created
+      value: 15
+      doc:
+        family, sport, saddr4 | saddr6
+        A new PM listener is created.
+     -
+      name: listener_closed
+      value: 16
+      doc:
+        family, sport, saddr4 | saddr6
+        A PM listener is closed.
+
+attribute-sets:
+  -
+    name: address
+    name-prefix: mptcp_pm_addr_attr_
+    attributes:
+      -
+        name: unspec
+        type: unused
+        value: 0
+      -
+        name: family
+        type: u16
+      -
+        name: id
+        type: u8
+      -
+        name: addr4
+        type: u32
+        byte-order: big-endian
+      -
+        name: addr6
+        type: binary
+        checks:
+          min-len: 16
+      -
+        name: port
+        type: u16
+        byte-order: big-endian
+      -
+        name: flags
+        type: u32
+      -
+        name: if_idx
+        type: s32
+  -
+    name: subflow-attribute
+    name-prefix: mptcp_subflow_attr_
+    attributes:
+      -
+        name: unspec
+        type: unused
+        value: 0
+      -
+        name: token_rem
+        type: u32
+      -
+        name: token_loc
+        type: u32
+      -
+        name: relwrite_seq
+        type: u32
+      -
+        name: map_seq
+        type: u64
+      -
+        name: map_sfseq
+        type: u32
+      -
+        name: ssn_offset
+        type: u32
+      -
+        name: map_datalen
+        type: u16
+      -
+        name: flags
+        type: u32
+      -
+        name: id_rem
+        type: u8
+      -
+        name: id_loc
+        type: u8
+      -
+        name: pad
+        type: pad
+  -
+    name: endpoint
+    name-prefix: mptcp_pm_endpoint_
+    attributes:
+      -
+        name: addr
+        type: nest
+        nested-attributes: address
+  -
+    name: attr
+    name-prefix: mptcp_pm_attr_
+    attributes:
+      -
+        name: unspec
+        type: unused
+        value: 0
+      -
+        name: addr
+        type: nest
+        nested-attributes: address
+      -
+        name: rcv_add_addrs
+        type: u32
+      -
+        name: subflows
+        type: u32
+      -
+        name: token
+        type: u32
+      -
+        name: loc_id
+        type: u8
+      -
+        name: addr_remote
+        type: nest
+        nested-attributes: address
+  -
+    name: event_attr
+    enum-name: mptcp_event_attr
+    name-prefix: mptcp_attr_
+    attributes:
+      -
+        name: UNSPEC
+        type: unused
+        value: 0
+      -
+        name: token
+        type: u32
+      -
+        name: family
+        type: u16
+      -
+        name: loc_id
+        type: u8
+      -
+        name: rem_id
+        type: u8
+      -
+        name: saddr4
+        type: u32
+        byte-order: big-endian
+      -
+        name: saddr6
+        type: binary
+        checks:
+          min-len: 16
+      -
+        name: daddr4
+        type: u32
+        byte-order: big-endian
+      -
+        name: daddr6
+        type: binary
+        checks:
+          min-len: 16
+      -
+        name: sport
+        type: u16
+        byte-order: big-endian
+      -
+        name: dport
+        type: u16
+        byte-order: big-endian
+      -
+        name: backup
+        type: u8
+      -
+        name: error
+        type: u8
+      -
+        name: flags
+        type: u16
+      -
+        name: timeout
+        type: u32
+      -
+        name: if_idx
+        type: u32
+      -
+        name: reset_reason
+        type: u32
+      -
+        name: reset_flags
+        type: u32
+      -
+        name: server_side
+        type: u8
+
+operations:
+  list:
+    -
+      name: unspec
+      doc: unused
+      value: 0
+    -
+      name: add_addr
+      doc: Add endpoint
+      attribute-set: endpoint
+      dont-validate: [ strict ]
+      flags: [ uns-admin-perm ]
+      do: &add_addr_attrs
+        request:
+          attributes:
+            - addr
+    -
+      name: del_addr
+      doc: Delete endpoint
+      attribute-set: endpoint
+      dont-validate: [ strict ]
+      flags: [ uns-admin-perm ]
+      do: *add_addr_attrs
+    -
+      name: get_addr
+      doc: Get endpoint information
+      attribute-set: endpoint
+      dont-validate: [ strict ]
+      flags: [ uns-admin-perm ]
+      do: &get_addr_attrs
+        request:
+          attributes:
+           - addr
+        reply:
+          attributes:
+           - addr
+      dump:
+        reply:
+         attributes:
+           - addr
+    -
+      name:  flush_addrs
+      doc: flush addresses
+      attribute-set: endpoint
+      dont-validate: [ strict ]
+      flags: [ uns-admin-perm ]
+      do: *add_addr_attrs
+    -
+      name: set_limits
+      doc: Set protocol limits
+      attribute-set: attr
+      dont-validate: [ strict ]
+      flags: [ uns-admin-perm ]
+      do: &mptcp_limits
+        request:
+          attributes:
+            - rcv_add_addrs
+            - subflows
+    -
+      name: get_limits
+      doc: Get protocol limits
+      attribute-set: attr
+      dont-validate: [ strict ]
+      do: &mptcp_get_limits
+        request:
+           attributes:
+            - rcv_add_addrs
+            - subflows
+        reply:
+          attributes:
+            - rcv_add_addrs
+            - subflows
+    -
+      name: set_flags
+      doc: Change endpoint flags
+      attribute-set: attr
+      dont-validate: [ strict ]
+      flags: [ uns-admin-perm ]
+      do: &mptcp_set_flags
+        request:
+          attributes:
+            - addr
+            - token
+            - addr_remote
+    -
+      name: announce
+      doc: announce new sf
+      attribute-set: attr
+      dont-validate: [ strict ]
+      flags: [ uns-admin-perm ]
+      do: &announce_add
+        request:
+          attributes:
+            - addr
+            - token
+    -
+      name: remove
+      doc: announce removal
+      attribute-set: attr
+      dont-validate: [ strict ]
+      flags: [ uns-admin-perm ]
+      do:
+        request:
+         attributes:
+           - token
+           - loc_id
+    -
+      name: subflow_create
+      doc: todo
+      attribute-set: attr
+      dont-validate: [ strict ]
+      flags: [ uns-admin-perm ]
+      do: &sf_create
+        request:
+          attributes:
+            - addr
+            - token
+            - addr_remote
+    -
+      name: subflow_destroy
+      doc: todo
+      attribute-set: attr
+      dont-validate: [ strict ]
+      flags: [ uns-admin-perm ]
+      do: *sf_create
diff --git a/MAINTAINERS b/MAINTAINERS
index 8985a1b0b5ee..39abfeeb8dd4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14967,6 +14967,7 @@ W:	https://github.com/multipath-tcp/mptcp_net-next/wiki
 B:	https://github.com/multipath-tcp/mptcp_net-next/issues
 T:	git https://github.com/multipath-tcp/mptcp_net-next.git export-net
 T:	git https://github.com/multipath-tcp/mptcp_net-next.git export
+F:	Documentation/netlink/specs/mptcp.yaml
 F:	Documentation/networking/mptcp-sysctl.rst
 F:	include/net/mptcp.h
 F:	include/trace/events/mptcp.h
-- 
2.41.0

[PATCH mptcp-next v4 4/6] uapi: mptcp: use header file generated from YAML spec

[Davide Caratti]

generated with:

 $ ./tools/net/ynl/ynl-gen-c.py --mode uapi \
 > --spec Documentation/netlink/specs/mptcp.yaml \
 > --header -o include/uapi/linux/mptcp_pm.h

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/340
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 MAINTAINERS                   |   2 +-
 include/uapi/linux/mptcp.h    | 182 ++--------------------------------
 include/uapi/linux/mptcp_pm.h | 149 ++++++++++++++++++++++++++++
 3 files changed, 160 insertions(+), 173 deletions(-)
 create mode 100644 include/uapi/linux/mptcp_pm.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 39abfeeb8dd4..4b2acea679ed 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14971,7 +14971,7 @@ F:	Documentation/netlink/specs/mptcp.yaml
 F:	Documentation/networking/mptcp-sysctl.rst
 F:	include/net/mptcp.h
 F:	include/trace/events/mptcp.h
-F:	include/uapi/linux/mptcp.h
+F:	include/uapi/linux/mptcp*.h
 F:	net/mptcp/
 F:	tools/testing/selftests/bpf/*/*mptcp*.c
 F:	tools/testing/selftests/net/mptcp/
diff --git a/include/uapi/linux/mptcp.h b/include/uapi/linux/mptcp.h
index 0e62937ab17c..64ecc8a3f9f2 100644
--- a/include/uapi/linux/mptcp.h
+++ b/include/uapi/linux/mptcp.h
@@ -23,99 +23,24 @@
 #define MPTCP_SUBFLOW_FLAG_CONNECTED		_BITUL(7)
 #define MPTCP_SUBFLOW_FLAG_MAPVALID		_BITUL(8)
 
-enum {
-	MPTCP_SUBFLOW_ATTR_UNSPEC,
-	MPTCP_SUBFLOW_ATTR_TOKEN_REM,
-	MPTCP_SUBFLOW_ATTR_TOKEN_LOC,
-	MPTCP_SUBFLOW_ATTR_RELWRITE_SEQ,
-	MPTCP_SUBFLOW_ATTR_MAP_SEQ,
-	MPTCP_SUBFLOW_ATTR_MAP_SFSEQ,
-	MPTCP_SUBFLOW_ATTR_SSN_OFFSET,
-	MPTCP_SUBFLOW_ATTR_MAP_DATALEN,
-	MPTCP_SUBFLOW_ATTR_FLAGS,
-	MPTCP_SUBFLOW_ATTR_ID_REM,
-	MPTCP_SUBFLOW_ATTR_ID_LOC,
-	MPTCP_SUBFLOW_ATTR_PAD,
-	__MPTCP_SUBFLOW_ATTR_MAX
-};
-
-#define MPTCP_SUBFLOW_ATTR_MAX (__MPTCP_SUBFLOW_ATTR_MAX - 1)
-
-/* netlink interface */
-#define MPTCP_PM_NAME		"mptcp_pm"
 #define MPTCP_PM_CMD_GRP_NAME	"mptcp_pm_cmds"
 #define MPTCP_PM_EV_GRP_NAME	"mptcp_pm_events"
-#define MPTCP_PM_VER		0x1
-
-/*
- * ATTR types defined for MPTCP
- */
-enum {
-	MPTCP_PM_ATTR_UNSPEC,
-
-	MPTCP_PM_ATTR_ADDR,				/* nested address */
-	MPTCP_PM_ATTR_RCV_ADD_ADDRS,			/* u32 */
-	MPTCP_PM_ATTR_SUBFLOWS,				/* u32 */
-	MPTCP_PM_ATTR_TOKEN,				/* u32 */
-	MPTCP_PM_ATTR_LOC_ID,				/* u8 */
-	MPTCP_PM_ATTR_ADDR_REMOTE,			/* nested address */
-
-	__MPTCP_PM_ATTR_MAX
-};
-
-#define MPTCP_PM_ATTR_MAX (__MPTCP_PM_ATTR_MAX - 1)
-
-enum {
-	MPTCP_PM_ENDPOINT_ADDR = 1,
-
-	__MPTCP_PM_ENDPOINT_MAX
-};
-
-#define MPTCP_PM_ENDPOINT_MAX (__MPTCP_PM_ENDPOINT_MAX - 1)
-
-enum {
-	MPTCP_PM_ADDR_ATTR_UNSPEC,
-
-	MPTCP_PM_ADDR_ATTR_FAMILY,			/* u16 */
-	MPTCP_PM_ADDR_ATTR_ID,				/* u8 */
-	MPTCP_PM_ADDR_ATTR_ADDR4,			/* struct in_addr */
-	MPTCP_PM_ADDR_ATTR_ADDR6,			/* struct in6_addr */
-	MPTCP_PM_ADDR_ATTR_PORT,			/* u16 */
-	MPTCP_PM_ADDR_ATTR_FLAGS,			/* u32 */
-	MPTCP_PM_ADDR_ATTR_IF_IDX,			/* s32 */
-
-	__MPTCP_PM_ADDR_ATTR_MAX
-};
 
-#define MPTCP_PM_ADDR_ATTR_MAX (__MPTCP_PM_ADDR_ATTR_MAX - 1)
+#include <linux/mptcp_pm.h>
 
-#define MPTCP_PM_ADDR_FLAG_SIGNAL			(1 << 0)
-#define MPTCP_PM_ADDR_FLAG_SUBFLOW			(1 << 1)
-#define MPTCP_PM_ADDR_FLAG_BACKUP			(1 << 2)
-#define MPTCP_PM_ADDR_FLAG_FULLMESH			(1 << 3)
-#define MPTCP_PM_ADDR_FLAG_IMPLICIT			(1 << 4)
-
-enum {
-	MPTCP_PM_CMD_UNSPEC,
-
-	MPTCP_PM_CMD_ADD_ADDR,
-	MPTCP_PM_CMD_DEL_ADDR,
-	MPTCP_PM_CMD_GET_ADDR,
-	MPTCP_PM_CMD_FLUSH_ADDRS,
-	MPTCP_PM_CMD_SET_LIMITS,
-	MPTCP_PM_CMD_GET_LIMITS,
-	MPTCP_PM_CMD_SET_FLAGS,
-	MPTCP_PM_CMD_ANNOUNCE,
-	MPTCP_PM_CMD_REMOVE,
-	MPTCP_PM_CMD_SUBFLOW_CREATE,
-	MPTCP_PM_CMD_SUBFLOW_DESTROY,
-
-	__MPTCP_PM_CMD_AFTER_LAST
-};
+/* for backward compatibility */
+#define	__MPTCP_PM_CMD_AFTER_LAST	__MPTCP_PM_CMD_MAX
+#define	__MPTCP_ATTR_AFTER_LAST		__MPTCP_ATTR_MAX
 
 #define MPTCP_INFO_FLAG_FALLBACK		_BITUL(0)
 #define MPTCP_INFO_FLAG_REMOTE_KEY_RECEIVED	_BITUL(1)
 
+#define MPTCP_PM_ADDR_FLAG_SIGNAL                      (1 << 0)
+#define MPTCP_PM_ADDR_FLAG_SUBFLOW                     (1 << 1)
+#define MPTCP_PM_ADDR_FLAG_BACKUP                      (1 << 2)
+#define MPTCP_PM_ADDR_FLAG_FULLMESH                    (1 << 3)
+#define MPTCP_PM_ADDR_FLAG_IMPLICIT                    (1 << 4)
+
 struct mptcp_info {
 	__u8	mptcpi_subflows;
 	__u8	mptcpi_add_addr_signal;
@@ -138,93 +63,6 @@ struct mptcp_info {
 	__u64	mptcpi_bytes_acked;
 };
 
-/*
- * MPTCP_EVENT_CREATED: token, family, saddr4 | saddr6, daddr4 | daddr6,
- *                      sport, dport
- * A new MPTCP connection has been created. It is the good time to allocate
- * memory and send ADD_ADDR if needed. Depending on the traffic-patterns
- * it can take a long time until the MPTCP_EVENT_ESTABLISHED is sent.
- *
- * MPTCP_EVENT_ESTABLISHED: token, family, saddr4 | saddr6, daddr4 | daddr6,
- *			    sport, dport
- * A MPTCP connection is established (can start new subflows).
- *
- * MPTCP_EVENT_CLOSED: token
- * A MPTCP connection has stopped.
- *
- * MPTCP_EVENT_ANNOUNCED: token, rem_id, family, daddr4 | daddr6 [, dport]
- * A new address has been announced by the peer.
- *
- * MPTCP_EVENT_REMOVED: token, rem_id
- * An address has been lost by the peer.
- *
- * MPTCP_EVENT_SUB_ESTABLISHED: token, family, loc_id, rem_id,
- *                              saddr4 | saddr6, daddr4 | daddr6, sport,
- *                              dport, backup, if_idx [, error]
- * A new subflow has been established. 'error' should not be set.
- *
- * MPTCP_EVENT_SUB_CLOSED: token, family, loc_id, rem_id, saddr4 | saddr6,
- *                         daddr4 | daddr6, sport, dport, backup, if_idx
- *                         [, error]
- * A subflow has been closed. An error (copy of sk_err) could be set if an
- * error has been detected for this subflow.
- *
- * MPTCP_EVENT_SUB_PRIORITY: token, family, loc_id, rem_id, saddr4 | saddr6,
- *                           daddr4 | daddr6, sport, dport, backup, if_idx
- *                           [, error]
- * The priority of a subflow has changed. 'error' should not be set.
- *
- * MPTCP_EVENT_LISTENER_CREATED: family, sport, saddr4 | saddr6
- * A new PM listener is created.
- *
- * MPTCP_EVENT_LISTENER_CLOSED: family, sport, saddr4 | saddr6
- * A PM listener is closed.
- */
-enum mptcp_event_type {
-	MPTCP_EVENT_UNSPEC = 0,
-	MPTCP_EVENT_CREATED = 1,
-	MPTCP_EVENT_ESTABLISHED = 2,
-	MPTCP_EVENT_CLOSED = 3,
-
-	MPTCP_EVENT_ANNOUNCED = 6,
-	MPTCP_EVENT_REMOVED = 7,
-
-	MPTCP_EVENT_SUB_ESTABLISHED = 10,
-	MPTCP_EVENT_SUB_CLOSED = 11,
-
-	MPTCP_EVENT_SUB_PRIORITY = 13,
-
-	MPTCP_EVENT_LISTENER_CREATED = 15,
-	MPTCP_EVENT_LISTENER_CLOSED = 16,
-};
-
-enum mptcp_event_attr {
-	MPTCP_ATTR_UNSPEC = 0,
-
-	MPTCP_ATTR_TOKEN,	/* u32 */
-	MPTCP_ATTR_FAMILY,	/* u16 */
-	MPTCP_ATTR_LOC_ID,	/* u8 */
-	MPTCP_ATTR_REM_ID,	/* u8 */
-	MPTCP_ATTR_SADDR4,	/* be32 */
-	MPTCP_ATTR_SADDR6,	/* struct in6_addr */
-	MPTCP_ATTR_DADDR4,	/* be32 */
-	MPTCP_ATTR_DADDR6,	/* struct in6_addr */
-	MPTCP_ATTR_SPORT,	/* be16 */
-	MPTCP_ATTR_DPORT,	/* be16 */
-	MPTCP_ATTR_BACKUP,	/* u8 */
-	MPTCP_ATTR_ERROR,	/* u8 */
-	MPTCP_ATTR_FLAGS,	/* u16 */
-	MPTCP_ATTR_TIMEOUT,	/* u32 */
-	MPTCP_ATTR_IF_IDX,	/* s32 */
-	MPTCP_ATTR_RESET_REASON,/* u32 */
-	MPTCP_ATTR_RESET_FLAGS, /* u32 */
-	MPTCP_ATTR_SERVER_SIDE,	/* u8 */
-
-	__MPTCP_ATTR_AFTER_LAST
-};
-
-#define MPTCP_ATTR_MAX (__MPTCP_ATTR_AFTER_LAST - 1)
-
 /* MPTCP Reset reason codes, rfc8684 */
 #define MPTCP_RST_EUNSPEC	0
 #define MPTCP_RST_EMPTCP	1
diff --git a/include/uapi/linux/mptcp_pm.h b/include/uapi/linux/mptcp_pm.h
new file mode 100644
index 000000000000..0c7206531eb1
--- /dev/null
+++ b/include/uapi/linux/mptcp_pm.h
@@ -0,0 +1,149 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
+/* Do not edit directly, auto-generated from: */
+/*	Documentation/netlink/specs/mptcp.yaml */
+/* YNL-GEN uapi header */
+
+#ifndef _UAPI_LINUX_MPTCP_PM_H
+#define _UAPI_LINUX_MPTCP_PM_H
+
+#define MPTCP_PM_NAME	"mptcp_pm"
+#define MPTCP_PM_VER	1
+
+/**
+ * enum mptcp_event_type
+ * @MPTCP_EVENT_CREATED: token, family, saddr4 | saddr6, daddr4 | daddr6,
+ *   sport, dport A new MPTCP connection has been created. It is the good time
+ *   to allocate memory and send ADD_ADDR if needed. Depending on the
+ *   traffic-patterns it can take a long time until the MPTCP_EVENT_ESTABLISHED
+ *   is sent.
+ * @MPTCP_EVENT_ESTABLISHED: token, family, saddr4 | saddr6, daddr4 | daddr6,
+ *   sport, dport A MPTCP connection is established (can start new subflows).
+ * @MPTCP_EVENT_CLOSED: token A MPTCP connection has stopped.
+ * @MPTCP_EVENT_ANNOUNCED: token, rem_id, family, daddr4 | daddr6 [, dport] A
+ *   new address has been announced by the peer.
+ * @MPTCP_EVENT_REMOVED: token, rem_id An address has been lost by the peer.
+ * @MPTCP_EVENT_SUB_ESTABLISHED: token, family, loc_id, rem_id, saddr4 |
+ *   saddr6, daddr4 | daddr6, sport, dport, backup, if_idx [, error] A new
+ *   subflow has been established. 'error' should not be set.
+ * @MPTCP_EVENT_SUB_CLOSED: token, family, loc_id, rem_id, saddr4 | saddr6,
+ *   daddr4 | daddr6, sport, dport, backup, if_idx [, error] A subflow has been
+ *   closed. An error (copy of sk_err) could be set if an error has been
+ *   detected for this subflow.
+ * @MPTCP_EVENT_SUB_PRIORITY: token, family, loc_id, rem_id, saddr4 | saddr6,
+ *   daddr4 | daddr6, sport, dport, backup, if_idx [, error] The priority of a
+ *   subflow has changed. 'error' should not be set.
+ * @MPTCP_EVENT_LISTENER_CREATED: family, sport, saddr4 | saddr6 A new PM
+ *   listener is created.
+ * @MPTCP_EVENT_LISTENER_CLOSED: family, sport, saddr4 | saddr6 A PM listener
+ *   is closed.
+ */
+enum mptcp_event_type {
+	MPTCP_EVENT_UNSPEC,
+	MPTCP_EVENT_CREATED,
+	MPTCP_EVENT_ESTABLISHED,
+	MPTCP_EVENT_CLOSED,
+	MPTCP_EVENT_ANNOUNCED = 6,
+	MPTCP_EVENT_REMOVED,
+	MPTCP_EVENT_SUB_ESTABLISHED = 10,
+	MPTCP_EVENT_SUB_CLOSED,
+	MPTCP_EVENT_SUB_PRIORITY = 13,
+	MPTCP_EVENT_LISTENER_CREATED = 15,
+	MPTCP_EVENT_LISTENER_CLOSED,
+};
+
+enum {
+	MPTCP_PM_ADDR_ATTR_UNSPEC,
+	MPTCP_PM_ADDR_ATTR_FAMILY,
+	MPTCP_PM_ADDR_ATTR_ID,
+	MPTCP_PM_ADDR_ATTR_ADDR4,
+	MPTCP_PM_ADDR_ATTR_ADDR6,
+	MPTCP_PM_ADDR_ATTR_PORT,
+	MPTCP_PM_ADDR_ATTR_FLAGS,
+	MPTCP_PM_ADDR_ATTR_IF_IDX,
+
+	__MPTCP_PM_ADDR_ATTR_MAX
+};
+#define MPTCP_PM_ADDR_ATTR_MAX (__MPTCP_PM_ADDR_ATTR_MAX - 1)
+
+enum {
+	MPTCP_SUBFLOW_ATTR_UNSPEC,
+	MPTCP_SUBFLOW_ATTR_TOKEN_REM,
+	MPTCP_SUBFLOW_ATTR_TOKEN_LOC,
+	MPTCP_SUBFLOW_ATTR_RELWRITE_SEQ,
+	MPTCP_SUBFLOW_ATTR_MAP_SEQ,
+	MPTCP_SUBFLOW_ATTR_MAP_SFSEQ,
+	MPTCP_SUBFLOW_ATTR_SSN_OFFSET,
+	MPTCP_SUBFLOW_ATTR_MAP_DATALEN,
+	MPTCP_SUBFLOW_ATTR_FLAGS,
+	MPTCP_SUBFLOW_ATTR_ID_REM,
+	MPTCP_SUBFLOW_ATTR_ID_LOC,
+	MPTCP_SUBFLOW_ATTR_PAD,
+
+	__MPTCP_SUBFLOW_ATTR_MAX
+};
+#define MPTCP_SUBFLOW_ATTR_MAX (__MPTCP_SUBFLOW_ATTR_MAX - 1)
+
+enum {
+	MPTCP_PM_ENDPOINT_ADDR = 1,
+
+	__MPTCP_PM_ENDPOINT_MAX
+};
+#define MPTCP_PM_ENDPOINT_MAX (__MPTCP_PM_ENDPOINT_MAX - 1)
+
+enum {
+	MPTCP_PM_ATTR_UNSPEC,
+	MPTCP_PM_ATTR_ADDR,
+	MPTCP_PM_ATTR_RCV_ADD_ADDRS,
+	MPTCP_PM_ATTR_SUBFLOWS,
+	MPTCP_PM_ATTR_TOKEN,
+	MPTCP_PM_ATTR_LOC_ID,
+	MPTCP_PM_ATTR_ADDR_REMOTE,
+
+	__MPTCP_PM_ATTR_MAX
+};
+#define MPTCP_PM_ATTR_MAX (__MPTCP_PM_ATTR_MAX - 1)
+
+enum mptcp_event_attr {
+	MPTCP_ATTR_UNSPEC,
+	MPTCP_ATTR_TOKEN,
+	MPTCP_ATTR_FAMILY,
+	MPTCP_ATTR_LOC_ID,
+	MPTCP_ATTR_REM_ID,
+	MPTCP_ATTR_SADDR4,
+	MPTCP_ATTR_SADDR6,
+	MPTCP_ATTR_DADDR4,
+	MPTCP_ATTR_DADDR6,
+	MPTCP_ATTR_SPORT,
+	MPTCP_ATTR_DPORT,
+	MPTCP_ATTR_BACKUP,
+	MPTCP_ATTR_ERROR,
+	MPTCP_ATTR_FLAGS,
+	MPTCP_ATTR_TIMEOUT,
+	MPTCP_ATTR_IF_IDX,
+	MPTCP_ATTR_RESET_REASON,
+	MPTCP_ATTR_RESET_FLAGS,
+	MPTCP_ATTR_SERVER_SIDE,
+
+	__MPTCP_ATTR_MAX
+};
+#define MPTCP_ATTR_MAX (__MPTCP_ATTR_MAX - 1)
+
+enum {
+	MPTCP_PM_CMD_UNSPEC,
+	MPTCP_PM_CMD_ADD_ADDR,
+	MPTCP_PM_CMD_DEL_ADDR,
+	MPTCP_PM_CMD_GET_ADDR,
+	MPTCP_PM_CMD_FLUSH_ADDRS,
+	MPTCP_PM_CMD_SET_LIMITS,
+	MPTCP_PM_CMD_GET_LIMITS,
+	MPTCP_PM_CMD_SET_FLAGS,
+	MPTCP_PM_CMD_ANNOUNCE,
+	MPTCP_PM_CMD_REMOVE,
+	MPTCP_PM_CMD_SUBFLOW_CREATE,
+	MPTCP_PM_CMD_SUBFLOW_DESTROY,
+
+	__MPTCP_PM_CMD_MAX
+};
+#define MPTCP_PM_CMD_MAX (__MPTCP_PM_CMD_MAX - 1)
+
+#endif /* _UAPI_LINUX_MPTCP_PM_H */
-- 
2.41.0

[PATCH mptcp-next v4 5/6] net: mptcp: rename netlink handlers to mptcp_pm_nl_<blah>_{doit,dumpit}

[Davide Caratti]

so that they will match names generated from YAML spec.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/340
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 net/mptcp/pm_netlink.c   | 48 ++++++++++++++++++++--------------------
 net/mptcp/pm_userspace.c |  8 +++----
 net/mptcp/protocol.h     |  8 +++----
 3 files changed, 32 insertions(+), 32 deletions(-)

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 32976cf7c82b..dc3ed337eb1f 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -1334,7 +1334,7 @@ static int mptcp_nl_add_subflow_or_signal_addr(struct net *net)
 	return 0;
 }
 
-static int mptcp_nl_cmd_add_addr(struct sk_buff *skb, struct genl_info *info)
+static int mptcp_pm_nl_add_addr_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
@@ -1515,7 +1515,7 @@ static int mptcp_nl_remove_id_zero_address(struct net *net,
 	return 0;
 }
 
-static int mptcp_nl_cmd_del_addr(struct sk_buff *skb, struct genl_info *info)
+static int mptcp_pm_nl_del_addr_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
@@ -1650,7 +1650,7 @@ static void __reset_counters(struct pm_nl_pernet *pernet)
 	pernet->addrs = 0;
 }
 
-static int mptcp_nl_cmd_flush_addrs(struct sk_buff *skb, struct genl_info *info)
+static int mptcp_pm_nl_flush_addrs_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
 	LIST_HEAD(free_list);
@@ -1706,7 +1706,7 @@ static int mptcp_nl_fill_addr(struct sk_buff *skb,
 	return -EMSGSIZE;
 }
 
-static int mptcp_nl_cmd_get_addr(struct sk_buff *skb, struct genl_info *info)
+static int mptcp_pm_nl_get_addr_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
@@ -1756,8 +1756,8 @@ static int mptcp_nl_cmd_get_addr(struct sk_buff *skb, struct genl_info *info)
 	return ret;
 }
 
-static int mptcp_nl_cmd_dump_addrs(struct sk_buff *msg,
-				   struct netlink_callback *cb)
+static int mptcp_pm_nl_get_addr_dumpit(struct sk_buff *msg,
+				       struct netlink_callback *cb)
 {
 	struct net *net = sock_net(msg->sk);
 	struct mptcp_pm_addr_entry *entry;
@@ -1815,7 +1815,7 @@ static int parse_limit(struct genl_info *info, int id, unsigned int *limit)
 }
 
 static int
-mptcp_nl_cmd_set_limits(struct sk_buff *skb, struct genl_info *info)
+mptcp_pm_nl_set_limits_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
 	unsigned int rcv_addrs, subflows;
@@ -1841,7 +1841,7 @@ mptcp_nl_cmd_set_limits(struct sk_buff *skb, struct genl_info *info)
 }
 
 static int
-mptcp_nl_cmd_get_limits(struct sk_buff *skb, struct genl_info *info)
+mptcp_pm_nl_get_limits_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
 	struct sk_buff *msg;
@@ -1950,7 +1950,7 @@ int mptcp_pm_nl_set_flags(struct net *net, struct mptcp_pm_addr_entry *addr, u8
 	return 0;
 }
 
-static int mptcp_nl_cmd_set_flags(struct sk_buff *skb, struct genl_info *info)
+static int mptcp_pm_nl_set_flags_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct mptcp_pm_addr_entry remote = { .addr = { .family = AF_UNSPEC }, };
 	struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, };
@@ -2314,11 +2314,11 @@ void mptcp_event(enum mptcp_event_type type, const struct mptcp_sock *msk,
 	nlmsg_free(skb);
 }
 
-static const struct genl_ops mptcp_pm_ops[] = {
+static const struct genl_ops mptcp_pm_nl_ops[] = {
 	{
 		.cmd		= MPTCP_PM_CMD_ADD_ADDR,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_add_addr,
+		.doit		= mptcp_pm_nl_add_addr_doit,
 		.policy		= mptcp_pm_endpoint_nl_policy,
 		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
 		.flags		= GENL_UNS_ADMIN_PERM,
@@ -2326,7 +2326,7 @@ static const struct genl_ops mptcp_pm_ops[] = {
 	{
 		.cmd		= MPTCP_PM_CMD_DEL_ADDR,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_del_addr,
+		.doit		= mptcp_pm_nl_del_addr_doit,
 		.policy		= mptcp_pm_endpoint_nl_policy,
 		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
 		.flags		= GENL_UNS_ADMIN_PERM,
@@ -2334,8 +2334,8 @@ static const struct genl_ops mptcp_pm_ops[] = {
 	{
 		.cmd		= MPTCP_PM_CMD_GET_ADDR,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_get_addr,
-		.dumpit		= mptcp_nl_cmd_dump_addrs,
+		.doit		= mptcp_pm_nl_get_addr_doit,
+		.dumpit		= mptcp_pm_nl_get_addr_dumpit,
 		.policy		= mptcp_pm_endpoint_nl_policy,
 		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
 		.flags		= GENL_UNS_ADMIN_PERM,
@@ -2343,7 +2343,7 @@ static const struct genl_ops mptcp_pm_ops[] = {
 	{
 		.cmd		= MPTCP_PM_CMD_FLUSH_ADDRS,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_flush_addrs,
+		.doit		= mptcp_pm_nl_flush_addrs_doit,
 		.policy		= mptcp_pm_endpoint_nl_policy,
 		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
 		.flags		= GENL_UNS_ADMIN_PERM,
@@ -2351,7 +2351,7 @@ static const struct genl_ops mptcp_pm_ops[] = {
 	{
 		.cmd		= MPTCP_PM_CMD_SET_LIMITS,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_set_limits,
+		.doit		= mptcp_pm_nl_set_limits_doit,
 		.policy		= mptcp_pm_set_limits_nl_policy,
 		.maxattr	= MPTCP_PM_ATTR_SUBFLOWS,
 		.flags		= GENL_UNS_ADMIN_PERM,
@@ -2359,14 +2359,14 @@ static const struct genl_ops mptcp_pm_ops[] = {
 	{
 		.cmd		= MPTCP_PM_CMD_GET_LIMITS,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_get_limits,
+		.doit		= mptcp_pm_nl_get_limits_doit,
 		.policy		= mptcp_pm_set_limits_nl_policy,
 		.maxattr	= MPTCP_PM_ATTR_SUBFLOWS,
 	},
 	{
 		.cmd		= MPTCP_PM_CMD_SET_FLAGS,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_set_flags,
+		.doit		= mptcp_pm_nl_set_flags_doit,
 		.policy		= mptcp_pm_set_flags_nl_policy,
 		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
 		.flags		= GENL_UNS_ADMIN_PERM,
@@ -2374,7 +2374,7 @@ static const struct genl_ops mptcp_pm_ops[] = {
 	{
 		.cmd		= MPTCP_PM_CMD_ANNOUNCE,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_announce,
+		.doit		= mptcp_pm_nl_announce_doit,
 		.policy		= mptcp_pm_announce_nl_policy,
 		.maxattr	= MPTCP_PM_ATTR_TOKEN,
 		.flags		= GENL_UNS_ADMIN_PERM,
@@ -2382,7 +2382,7 @@ static const struct genl_ops mptcp_pm_ops[] = {
 	{
 		.cmd		= MPTCP_PM_CMD_REMOVE,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_remove,
+		.doit		= mptcp_pm_nl_remove_doit,
 		.policy		= mptcp_pm_remove_nl_policy,
 		.maxattr	= MPTCP_PM_ATTR_LOC_ID,
 		.flags		= GENL_UNS_ADMIN_PERM,
@@ -2390,7 +2390,7 @@ static const struct genl_ops mptcp_pm_ops[] = {
 	{
 		.cmd		= MPTCP_PM_CMD_SUBFLOW_CREATE,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_sf_create,
+		.doit		= mptcp_pm_nl_subflow_create_doit,
 		.policy		= mptcp_pm_subflow_create_nl_policy,
 		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
 		.flags		= GENL_UNS_ADMIN_PERM,
@@ -2398,7 +2398,7 @@ static const struct genl_ops mptcp_pm_ops[] = {
 	{
 		.cmd		= MPTCP_PM_CMD_SUBFLOW_DESTROY,
 		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_nl_cmd_sf_destroy,
+		.doit		= mptcp_pm_nl_subflow_destroy_doit,
 		.policy		= mptcp_pm_subflow_create_nl_policy,
 		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
 		.flags		= GENL_UNS_ADMIN_PERM,
@@ -2410,8 +2410,8 @@ static struct genl_family mptcp_genl_family __ro_after_init = {
 	.version	= MPTCP_PM_VER,
 	.netnsok	= true,
 	.module		= THIS_MODULE,
-	.ops		= mptcp_pm_ops,
-	.n_ops		= ARRAY_SIZE(mptcp_pm_ops),
+	.ops		= mptcp_pm_nl_ops,
+	.n_ops		= ARRAY_SIZE(mptcp_pm_nl_ops),
 	.resv_start_op	= MPTCP_PM_CMD_SUBFLOW_DESTROY + 1,
 	.mcgrps		= mptcp_pm_mcgrps,
 	.n_mcgrps	= ARRAY_SIZE(mptcp_pm_mcgrps),
diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c
index b5a8aa4c1ebd..07f602144d5e 100644
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -145,7 +145,7 @@ int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk,
 	return mptcp_userspace_pm_append_new_local_addr(msk, &new_entry);
 }
 
-int mptcp_nl_cmd_announce(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *token = info->attrs[MPTCP_PM_ATTR_TOKEN];
 	struct nlattr *addr = info->attrs[MPTCP_PM_ATTR_ADDR];
@@ -208,7 +208,7 @@ int mptcp_nl_cmd_announce(struct sk_buff *skb, struct genl_info *info)
 	return err;
 }
 
-int mptcp_nl_cmd_remove(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *token = info->attrs[MPTCP_PM_ATTR_TOKEN];
 	struct nlattr *id = info->attrs[MPTCP_PM_ATTR_LOC_ID];
@@ -270,7 +270,7 @@ int mptcp_nl_cmd_remove(struct sk_buff *skb, struct genl_info *info)
 	return err;
 }
 
-int mptcp_nl_cmd_sf_create(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *raddr = info->attrs[MPTCP_PM_ATTR_ADDR_REMOTE];
 	struct nlattr *token = info->attrs[MPTCP_PM_ATTR_TOKEN];
@@ -400,7 +400,7 @@ static struct sock *mptcp_nl_find_ssk(struct mptcp_sock *msk,
 	return NULL;
 }
 
-int mptcp_nl_cmd_sf_destroy(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_subflow_destroy_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *raddr = info->attrs[MPTCP_PM_ATTR_ADDR_REMOTE];
 	struct nlattr *token = info->attrs[MPTCP_PM_ATTR_TOKEN];
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 3c938e3560e4..bbe3cb8f51cf 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -894,10 +894,10 @@ void mptcp_pm_remove_addrs_and_subflows(struct mptcp_sock *msk,
 					struct list_head *rm_list);
 
 void mptcp_free_local_addr_list(struct mptcp_sock *msk);
-int mptcp_nl_cmd_announce(struct sk_buff *skb, struct genl_info *info);
-int mptcp_nl_cmd_remove(struct sk_buff *skb, struct genl_info *info);
-int mptcp_nl_cmd_sf_create(struct sk_buff *skb, struct genl_info *info);
-int mptcp_nl_cmd_sf_destroy(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_subflow_destroy_doit(struct sk_buff *skb, struct genl_info *info);
 
 void mptcp_event(enum mptcp_event_type type, const struct mptcp_sock *msk,
 		 const struct sock *ssk, gfp_t gfp);
-- 
2.41.0

[PATCH mptcp-next v4 6/6] net: mptcp: use policy generated by YAML spec

[Davide Caratti]

generated with:

 $ ./tools/net/ynl/ynl-gen-c.py --mode kernel \
 > --spec Documentation/netlink/specs/mptcp.yaml --source \
 > -o net/mptcp/mptcp_pm_gen.c
 $ ./tools/net/ynl/ynl-gen-c.py --mode kernel \
 > --spec Documentation/netlink/specs/mptcp.yaml --header \
 > -o net/mptcp/mptcp_pm_gen.h

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/340
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
---
 net/mptcp/Makefile       |   3 +-
 net/mptcp/mptcp_pm_gen.c | 179 +++++++++++++++++++++++++++++++++++++++
 net/mptcp/mptcp_pm_gen.h |  58 +++++++++++++
 net/mptcp/pm_netlink.c   | 165 ++----------------------------------
 net/mptcp/protocol.h     |   6 +-
 5 files changed, 250 insertions(+), 161 deletions(-)
 create mode 100644 net/mptcp/mptcp_pm_gen.c
 create mode 100644 net/mptcp/mptcp_pm_gen.h

diff --git a/net/mptcp/Makefile b/net/mptcp/Makefile
index 84e531f86b82..bcf1dbf3a432 100644
--- a/net/mptcp/Makefile
+++ b/net/mptcp/Makefile
@@ -2,7 +2,8 @@
 obj-$(CONFIG_MPTCP) += mptcp.o
 
 mptcp-y := protocol.o subflow.o options.o token.o crypto.o ctrl.o pm.o diag.o \
-	   mib.o pm_netlink.o sockopt.o pm_userspace.o fastopen.o sched.o
+	   mib.o pm_netlink.o sockopt.o pm_userspace.o fastopen.o sched.o \
+	   mptcp_pm_gen.o
 
 obj-$(CONFIG_SYN_COOKIES) += syncookies.o
 obj-$(CONFIG_INET_MPTCP_DIAG) += mptcp_diag.o
diff --git a/net/mptcp/mptcp_pm_gen.c b/net/mptcp/mptcp_pm_gen.c
new file mode 100644
index 000000000000..673b5167af6b
--- /dev/null
+++ b/net/mptcp/mptcp_pm_gen.c
@@ -0,0 +1,179 @@
+// SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
+/* Do not edit directly, auto-generated from: */
+/*	Documentation/netlink/specs/mptcp.yaml */
+/* YNL-GEN kernel source */
+
+#include <net/netlink.h>
+#include <net/genetlink.h>
+
+#include "mptcp_pm_gen.h"
+
+#include <uapi/linux/mptcp_pm.h>
+
+/* Common nested types */
+const struct nla_policy mptcp_pm_address_nl_policy[MPTCP_PM_ADDR_ATTR_IF_IDX + 1] = {
+	[MPTCP_PM_ADDR_ATTR_FAMILY] = { .type = NLA_U16, },
+	[MPTCP_PM_ADDR_ATTR_ID] = { .type = NLA_U8, },
+	[MPTCP_PM_ADDR_ATTR_ADDR4] = { .type = NLA_U32, },
+	[MPTCP_PM_ADDR_ATTR_ADDR6] = { .len = 16, },
+	[MPTCP_PM_ADDR_ATTR_PORT] = { .type = NLA_U16, },
+	[MPTCP_PM_ADDR_ATTR_FLAGS] = { .type = NLA_U32, },
+	[MPTCP_PM_ADDR_ATTR_IF_IDX] = { .type = NLA_S32, },
+};
+
+/* MPTCP_PM_CMD_ADD_ADDR - do */
+const struct nla_policy mptcp_pm_add_addr_nl_policy[MPTCP_PM_ENDPOINT_ADDR + 1] = {
+	[MPTCP_PM_ENDPOINT_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+};
+
+/* MPTCP_PM_CMD_DEL_ADDR - do */
+const struct nla_policy mptcp_pm_del_addr_nl_policy[MPTCP_PM_ENDPOINT_ADDR + 1] = {
+	[MPTCP_PM_ENDPOINT_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+};
+
+/* MPTCP_PM_CMD_GET_ADDR - do */
+const struct nla_policy mptcp_pm_get_addr_nl_policy[MPTCP_PM_ENDPOINT_ADDR + 1] = {
+	[MPTCP_PM_ENDPOINT_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+};
+
+/* MPTCP_PM_CMD_FLUSH_ADDRS - do */
+const struct nla_policy mptcp_pm_flush_addrs_nl_policy[MPTCP_PM_ENDPOINT_ADDR + 1] = {
+	[MPTCP_PM_ENDPOINT_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+};
+
+/* MPTCP_PM_CMD_SET_LIMITS - do */
+const struct nla_policy mptcp_pm_set_limits_nl_policy[MPTCP_PM_ATTR_SUBFLOWS + 1] = {
+	[MPTCP_PM_ATTR_RCV_ADD_ADDRS] = { .type = NLA_U32, },
+	[MPTCP_PM_ATTR_SUBFLOWS] = { .type = NLA_U32, },
+};
+
+/* MPTCP_PM_CMD_GET_LIMITS - do */
+const struct nla_policy mptcp_pm_get_limits_nl_policy[MPTCP_PM_ATTR_SUBFLOWS + 1] = {
+	[MPTCP_PM_ATTR_RCV_ADD_ADDRS] = { .type = NLA_U32, },
+	[MPTCP_PM_ATTR_SUBFLOWS] = { .type = NLA_U32, },
+};
+
+/* MPTCP_PM_CMD_SET_FLAGS - do */
+const struct nla_policy mptcp_pm_set_flags_nl_policy[MPTCP_PM_ATTR_ADDR_REMOTE + 1] = {
+	[MPTCP_PM_ATTR_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
+	[MPTCP_PM_ATTR_ADDR_REMOTE] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+};
+
+/* MPTCP_PM_CMD_ANNOUNCE - do */
+const struct nla_policy mptcp_pm_announce_nl_policy[MPTCP_PM_ATTR_TOKEN + 1] = {
+	[MPTCP_PM_ATTR_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
+};
+
+/* MPTCP_PM_CMD_REMOVE - do */
+const struct nla_policy mptcp_pm_remove_nl_policy[MPTCP_PM_ATTR_LOC_ID + 1] = {
+	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
+	[MPTCP_PM_ATTR_LOC_ID] = { .type = NLA_U8, },
+};
+
+/* MPTCP_PM_CMD_SUBFLOW_CREATE - do */
+const struct nla_policy mptcp_pm_subflow_create_nl_policy[MPTCP_PM_ATTR_ADDR_REMOTE + 1] = {
+	[MPTCP_PM_ATTR_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
+	[MPTCP_PM_ATTR_ADDR_REMOTE] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+};
+
+/* MPTCP_PM_CMD_SUBFLOW_DESTROY - do */
+const struct nla_policy mptcp_pm_subflow_destroy_nl_policy[MPTCP_PM_ATTR_ADDR_REMOTE + 1] = {
+	[MPTCP_PM_ATTR_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
+	[MPTCP_PM_ATTR_ADDR_REMOTE] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
+};
+
+/* Ops table for mptcp_pm */
+const struct genl_ops mptcp_pm_nl_ops[11] = {
+	{
+		.cmd		= MPTCP_PM_CMD_ADD_ADDR,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_add_addr_doit,
+		.policy		= mptcp_pm_add_addr_nl_policy,
+		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
+		.flags		= GENL_UNS_ADMIN_PERM,
+	},
+	{
+		.cmd		= MPTCP_PM_CMD_DEL_ADDR,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_del_addr_doit,
+		.policy		= mptcp_pm_del_addr_nl_policy,
+		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
+		.flags		= GENL_UNS_ADMIN_PERM,
+	},
+	{
+		.cmd		= MPTCP_PM_CMD_GET_ADDR,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_get_addr_doit,
+		.dumpit		= mptcp_pm_nl_get_addr_dumpit,
+		.policy		= mptcp_pm_get_addr_nl_policy,
+		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
+		.flags		= GENL_UNS_ADMIN_PERM,
+	},
+	{
+		.cmd		= MPTCP_PM_CMD_FLUSH_ADDRS,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_flush_addrs_doit,
+		.policy		= mptcp_pm_flush_addrs_nl_policy,
+		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
+		.flags		= GENL_UNS_ADMIN_PERM,
+	},
+	{
+		.cmd		= MPTCP_PM_CMD_SET_LIMITS,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_set_limits_doit,
+		.policy		= mptcp_pm_set_limits_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_SUBFLOWS,
+		.flags		= GENL_UNS_ADMIN_PERM,
+	},
+	{
+		.cmd		= MPTCP_PM_CMD_GET_LIMITS,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_get_limits_doit,
+		.policy		= mptcp_pm_get_limits_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_SUBFLOWS,
+	},
+	{
+		.cmd		= MPTCP_PM_CMD_SET_FLAGS,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_set_flags_doit,
+		.policy		= mptcp_pm_set_flags_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
+		.flags		= GENL_UNS_ADMIN_PERM,
+	},
+	{
+		.cmd		= MPTCP_PM_CMD_ANNOUNCE,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_announce_doit,
+		.policy		= mptcp_pm_announce_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_TOKEN,
+		.flags		= GENL_UNS_ADMIN_PERM,
+	},
+	{
+		.cmd		= MPTCP_PM_CMD_REMOVE,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_remove_doit,
+		.policy		= mptcp_pm_remove_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_LOC_ID,
+		.flags		= GENL_UNS_ADMIN_PERM,
+	},
+	{
+		.cmd		= MPTCP_PM_CMD_SUBFLOW_CREATE,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_subflow_create_doit,
+		.policy		= mptcp_pm_subflow_create_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
+		.flags		= GENL_UNS_ADMIN_PERM,
+	},
+	{
+		.cmd		= MPTCP_PM_CMD_SUBFLOW_DESTROY,
+		.validate	= GENL_DONT_VALIDATE_STRICT,
+		.doit		= mptcp_pm_nl_subflow_destroy_doit,
+		.policy		= mptcp_pm_subflow_destroy_nl_policy,
+		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
+		.flags		= GENL_UNS_ADMIN_PERM,
+	},
+};
diff --git a/net/mptcp/mptcp_pm_gen.h b/net/mptcp/mptcp_pm_gen.h
new file mode 100644
index 000000000000..10579d184587
--- /dev/null
+++ b/net/mptcp/mptcp_pm_gen.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
+/* Do not edit directly, auto-generated from: */
+/*	Documentation/netlink/specs/mptcp.yaml */
+/* YNL-GEN kernel header */
+
+#ifndef _LINUX_MPTCP_PM_GEN_H
+#define _LINUX_MPTCP_PM_GEN_H
+
+#include <net/netlink.h>
+#include <net/genetlink.h>
+
+#include <uapi/linux/mptcp_pm.h>
+
+/* Common nested types */
+extern const struct nla_policy mptcp_pm_address_nl_policy[MPTCP_PM_ADDR_ATTR_IF_IDX + 1];
+
+extern const struct nla_policy mptcp_pm_add_addr_nl_policy[MPTCP_PM_ENDPOINT_ADDR + 1];
+
+extern const struct nla_policy mptcp_pm_del_addr_nl_policy[MPTCP_PM_ENDPOINT_ADDR + 1];
+
+extern const struct nla_policy mptcp_pm_get_addr_nl_policy[MPTCP_PM_ENDPOINT_ADDR + 1];
+
+extern const struct nla_policy mptcp_pm_flush_addrs_nl_policy[MPTCP_PM_ENDPOINT_ADDR + 1];
+
+extern const struct nla_policy mptcp_pm_set_limits_nl_policy[MPTCP_PM_ATTR_SUBFLOWS + 1];
+
+extern const struct nla_policy mptcp_pm_get_limits_nl_policy[MPTCP_PM_ATTR_SUBFLOWS + 1];
+
+extern const struct nla_policy mptcp_pm_set_flags_nl_policy[MPTCP_PM_ATTR_ADDR_REMOTE + 1];
+
+extern const struct nla_policy mptcp_pm_announce_nl_policy[MPTCP_PM_ATTR_TOKEN + 1];
+
+extern const struct nla_policy mptcp_pm_remove_nl_policy[MPTCP_PM_ATTR_LOC_ID + 1];
+
+extern const struct nla_policy mptcp_pm_subflow_create_nl_policy[MPTCP_PM_ATTR_ADDR_REMOTE + 1];
+
+extern const struct nla_policy mptcp_pm_subflow_destroy_nl_policy[MPTCP_PM_ATTR_ADDR_REMOTE + 1];
+
+/* Ops table for mptcp_pm */
+extern const struct genl_ops mptcp_pm_nl_ops[11];
+
+int mptcp_pm_nl_add_addr_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_del_addr_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_get_addr_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_get_addr_dumpit(struct sk_buff *skb,
+				struct netlink_callback *cb);
+int mptcp_pm_nl_flush_addrs_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_set_limits_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_get_limits_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_set_flags_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info);
+int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb,
+				    struct genl_info *info);
+int mptcp_pm_nl_subflow_destroy_doit(struct sk_buff *skb,
+				     struct genl_info *info);
+
+#endif /* _LINUX_MPTCP_PM_GEN_H */
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index dc3ed337eb1f..1529ec358815 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -48,60 +48,6 @@ struct pm_nl_pernet {
 #define MPTCP_PM_ADDR_MAX	8
 #define ADD_ADDR_RETRANS_MAX	3
 
-static
-const struct nla_policy mptcp_pm_address_nl_policy[MPTCP_PM_ADDR_ATTR_IF_IDX + 1] = {
-	[MPTCP_PM_ADDR_ATTR_FAMILY] = { .type = NLA_U16, },
-	[MPTCP_PM_ADDR_ATTR_ID] = { .type = NLA_U8, },
-	[MPTCP_PM_ADDR_ATTR_ADDR4] = { .type = NLA_U32, },
-	[MPTCP_PM_ADDR_ATTR_ADDR6] = { .len = 16, },
-	[MPTCP_PM_ADDR_ATTR_PORT] = { .type = NLA_U16, },
-	[MPTCP_PM_ADDR_ATTR_FLAGS] = { .type = NLA_U32, },
-	[MPTCP_PM_ADDR_ATTR_IF_IDX] = { .type = NLA_S32, },
-};
-
-/* MPTCP_PM_CMD_ADD_ADDR / DEL / GET / FLUSH - do */
-static
-const struct nla_policy mptcp_pm_endpoint_nl_policy[MPTCP_PM_ENDPOINT_ADDR + 1] = {
-	[MPTCP_PM_ENDPOINT_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
-};
-
-/* MPTCP_PM_CMD_SET_LIMITS - do */
-static
-const struct nla_policy mptcp_pm_set_limits_nl_policy[MPTCP_PM_ATTR_SUBFLOWS + 1] = {
-	[MPTCP_PM_ATTR_RCV_ADD_ADDRS] = { .type = NLA_U32, },
-	[MPTCP_PM_ATTR_SUBFLOWS] = { .type = NLA_U32, },
-};
-
-/* MPTCP_PM_CMD_SET_FLAGS - do */
-static
-const struct nla_policy mptcp_pm_set_flags_nl_policy[MPTCP_PM_ATTR_ADDR_REMOTE + 1] = {
-	[MPTCP_PM_ATTR_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
-	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
-	[MPTCP_PM_ATTR_ADDR_REMOTE] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
-};
-
-/* MPTCP_PM_CMD_ANNOUNCE - do */
-static
-const struct nla_policy mptcp_pm_announce_nl_policy[MPTCP_PM_ATTR_TOKEN + 1] = {
-	[MPTCP_PM_ATTR_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
-	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
-};
-
-/* MPTCP_PM_CMD_REMOVE - do */
-static
-const struct nla_policy mptcp_pm_remove_nl_policy[MPTCP_PM_ATTR_LOC_ID + 1] = {
-	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
-	[MPTCP_PM_ATTR_LOC_ID] = { .type = NLA_U8, },
-};
-
-/* MPTCP_PM_CMD_SUBFLOW_CREATE / DESTROY - do */
-static
-const struct nla_policy mptcp_pm_subflow_create_nl_policy[MPTCP_PM_ATTR_ADDR_REMOTE + 1] = {
-	[MPTCP_PM_ATTR_ADDR] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
-	[MPTCP_PM_ATTR_TOKEN] = { .type = NLA_U32, },
-	[MPTCP_PM_ATTR_ADDR_REMOTE] = NLA_POLICY_NESTED(mptcp_pm_address_nl_policy),
-};
-
 static struct pm_nl_pernet *pm_nl_get_pernet(const struct net *net)
 {
 	return net_generic(net, pm_nl_pernet_id);
@@ -1334,7 +1280,7 @@ static int mptcp_nl_add_subflow_or_signal_addr(struct net *net)
 	return 0;
 }
 
-static int mptcp_pm_nl_add_addr_doit(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_add_addr_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
@@ -1515,7 +1461,7 @@ static int mptcp_nl_remove_id_zero_address(struct net *net,
 	return 0;
 }
 
-static int mptcp_pm_nl_del_addr_doit(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_del_addr_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
@@ -1650,7 +1596,7 @@ static void __reset_counters(struct pm_nl_pernet *pernet)
 	pernet->addrs = 0;
 }
 
-static int mptcp_pm_nl_flush_addrs_doit(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_flush_addrs_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
 	LIST_HEAD(free_list);
@@ -1706,7 +1652,7 @@ static int mptcp_nl_fill_addr(struct sk_buff *skb,
 	return -EMSGSIZE;
 }
 
-static int mptcp_pm_nl_get_addr_doit(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_get_addr_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
@@ -1756,8 +1702,8 @@ static int mptcp_pm_nl_get_addr_doit(struct sk_buff *skb, struct genl_info *info
 	return ret;
 }
 
-static int mptcp_pm_nl_get_addr_dumpit(struct sk_buff *msg,
-				       struct netlink_callback *cb)
+int mptcp_pm_nl_get_addr_dumpit(struct sk_buff *msg,
+				struct netlink_callback *cb)
 {
 	struct net *net = sock_net(msg->sk);
 	struct mptcp_pm_addr_entry *entry;
@@ -1814,8 +1760,7 @@ static int parse_limit(struct genl_info *info, int id, unsigned int *limit)
 	return 0;
 }
 
-static int
-mptcp_pm_nl_set_limits_doit(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_set_limits_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
 	unsigned int rcv_addrs, subflows;
@@ -1840,8 +1785,7 @@ mptcp_pm_nl_set_limits_doit(struct sk_buff *skb, struct genl_info *info)
 	return ret;
 }
 
-static int
-mptcp_pm_nl_get_limits_doit(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_get_limits_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
 	struct sk_buff *msg;
@@ -1950,7 +1894,7 @@ int mptcp_pm_nl_set_flags(struct net *net, struct mptcp_pm_addr_entry *addr, u8
 	return 0;
 }
 
-static int mptcp_pm_nl_set_flags_doit(struct sk_buff *skb, struct genl_info *info)
+int mptcp_pm_nl_set_flags_doit(struct sk_buff *skb, struct genl_info *info)
 {
 	struct mptcp_pm_addr_entry remote = { .addr = { .family = AF_UNSPEC }, };
 	struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, };
@@ -2314,97 +2258,6 @@ void mptcp_event(enum mptcp_event_type type, const struct mptcp_sock *msk,
 	nlmsg_free(skb);
 }
 
-static const struct genl_ops mptcp_pm_nl_ops[] = {
-	{
-		.cmd		= MPTCP_PM_CMD_ADD_ADDR,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_add_addr_doit,
-		.policy		= mptcp_pm_endpoint_nl_policy,
-		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
-		.flags		= GENL_UNS_ADMIN_PERM,
-	},
-	{
-		.cmd		= MPTCP_PM_CMD_DEL_ADDR,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_del_addr_doit,
-		.policy		= mptcp_pm_endpoint_nl_policy,
-		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
-		.flags		= GENL_UNS_ADMIN_PERM,
-	},
-	{
-		.cmd		= MPTCP_PM_CMD_GET_ADDR,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_get_addr_doit,
-		.dumpit		= mptcp_pm_nl_get_addr_dumpit,
-		.policy		= mptcp_pm_endpoint_nl_policy,
-		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
-		.flags		= GENL_UNS_ADMIN_PERM,
-	},
-	{
-		.cmd		= MPTCP_PM_CMD_FLUSH_ADDRS,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_flush_addrs_doit,
-		.policy		= mptcp_pm_endpoint_nl_policy,
-		.maxattr	= MPTCP_PM_ENDPOINT_ADDR,
-		.flags		= GENL_UNS_ADMIN_PERM,
-	},
-	{
-		.cmd		= MPTCP_PM_CMD_SET_LIMITS,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_set_limits_doit,
-		.policy		= mptcp_pm_set_limits_nl_policy,
-		.maxattr	= MPTCP_PM_ATTR_SUBFLOWS,
-		.flags		= GENL_UNS_ADMIN_PERM,
-	},
-	{
-		.cmd		= MPTCP_PM_CMD_GET_LIMITS,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_get_limits_doit,
-		.policy		= mptcp_pm_set_limits_nl_policy,
-		.maxattr	= MPTCP_PM_ATTR_SUBFLOWS,
-	},
-	{
-		.cmd		= MPTCP_PM_CMD_SET_FLAGS,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_set_flags_doit,
-		.policy		= mptcp_pm_set_flags_nl_policy,
-		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
-		.flags		= GENL_UNS_ADMIN_PERM,
-	},
-	{
-		.cmd		= MPTCP_PM_CMD_ANNOUNCE,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_announce_doit,
-		.policy		= mptcp_pm_announce_nl_policy,
-		.maxattr	= MPTCP_PM_ATTR_TOKEN,
-		.flags		= GENL_UNS_ADMIN_PERM,
-	},
-	{
-		.cmd		= MPTCP_PM_CMD_REMOVE,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_remove_doit,
-		.policy		= mptcp_pm_remove_nl_policy,
-		.maxattr	= MPTCP_PM_ATTR_LOC_ID,
-		.flags		= GENL_UNS_ADMIN_PERM,
-	},
-	{
-		.cmd		= MPTCP_PM_CMD_SUBFLOW_CREATE,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_subflow_create_doit,
-		.policy		= mptcp_pm_subflow_create_nl_policy,
-		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
-		.flags		= GENL_UNS_ADMIN_PERM,
-	},
-	{
-		.cmd		= MPTCP_PM_CMD_SUBFLOW_DESTROY,
-		.validate	= GENL_DONT_VALIDATE_STRICT,
-		.doit		= mptcp_pm_nl_subflow_destroy_doit,
-		.policy		= mptcp_pm_subflow_create_nl_policy,
-		.maxattr	= MPTCP_PM_ATTR_ADDR_REMOTE,
-		.flags		= GENL_UNS_ADMIN_PERM,
-	},
-};
-
 static struct genl_family mptcp_genl_family __ro_after_init = {
 	.name		= MPTCP_PM_NAME,
 	.version	= MPTCP_PM_VER,
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index bbe3cb8f51cf..6cccd0be0d83 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -13,6 +13,8 @@
 #include <uapi/linux/mptcp.h>
 #include <net/genetlink.h>
 
+#include "mptcp_pm_gen.h"
+
 #define MPTCP_SUPPORTED_VERSION	1
 
 /* MPTCP option bits */
@@ -894,10 +896,6 @@ void mptcp_pm_remove_addrs_and_subflows(struct mptcp_sock *msk,
 					struct list_head *rm_list);
 
 void mptcp_free_local_addr_list(struct mptcp_sock *msk);
-int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info);
-int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info);
-int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb, struct genl_info *info);
-int mptcp_pm_nl_subflow_destroy_doit(struct sk_buff *skb, struct genl_info *info);
 
 void mptcp_event(enum mptcp_event_type type, const struct mptcp_sock *msk,
 		 const struct sock *ssk, gfp_t gfp);
-- 
2.41.0

Re: net: mptcp: use policy generated by YAML spec: Tests Results

[MPTCP CI]

Hi Davide,

Thank you for your modifications, that's great!

Our CI did some validations and here is its report:

- KVM Validation: normal (except selftest_mptcp_join):
  - Success! ✅:
  - Task: https://cirrus-ci.com/task/4881519630614528
  - Summary: https://api.cirrus-ci.com/v1/artifact/task/4881519630614528/summary/summary.txt

- KVM Validation: normal (only selftest_mptcp_join):
  - Success! ✅:
  - Task: https://cirrus-ci.com/task/6007419537457152
  - Summary: https://api.cirrus-ci.com/v1/artifact/task/6007419537457152/summary/summary.txt

- KVM Validation: debug (only selftest_mptcp_join):
  - Success! ✅:
  - Task: https://cirrus-ci.com/task/6570369490878464
  - Summary: https://api.cirrus-ci.com/v1/artifact/task/6570369490878464/summary/summary.txt

- KVM Validation: debug (except selftest_mptcp_join):
  - Success! ✅:
  - Task: https://cirrus-ci.com/task/5444469584035840
  - Summary: https://api.cirrus-ci.com/v1/artifact/task/5444469584035840/summary/summary.txt

Initiator: Patchew Applier
Commits: https://github.com/multipath-tcp/mptcp_net-next/commits/2d024235345c


If there are some issues, you can reproduce them using the same environment as
the one used by the CI thanks to a docker image, e.g.:

    $ cd [kernel source code]
    $ docker run -v "${PWD}:${PWD}:rw" -w "${PWD}" --privileged --rm -it \
        --pull always mptcp/mptcp-upstream-virtme-docker:latest \
        auto-debug

For more details:

    https://github.com/multipath-tcp/mptcp-upstream-virtme-docker


Please note that despite all the efforts that have been already done to have a
stable tests suite when executed on a public CI like here, it is possible some
reported issues are not due to your modifications. Still, do not hesitate to
help us improve that ;-)

Cheers,
MPTCP GH Action bot
Bot operated by Matthieu Baerts (Tessares)

Re: [PATCH mptcp-next v4 0/6] mptcp: convert netlink code to use YAML spec

[Matthieu Baerts]

Hi Davide, Paolo,

On 20/09/2023 11:24, Davide Caratti wrote:
> this series converts most of the MPTCP netlink interface (plus uAPI bits)
> to use sources generated by a YAML spec file. Patch 2/6 and 6/6 have been
> individually verified with kselftests.
> 
> POC:
> 
>  $ sudo  ./tools/net/ynl/cli.py  --spec \
>  > Documentation/netlink/specs/mptcp.yaml --do add_addr \
>  > --json '{"addr": {"addr4": 16909061, "family": 2, "flags": 4, "id": 10, "port": 0}}'
> 
>  $ ip -j mptcp endpoint show id 10
>  [{"address":"1.2.3.5","id":10,"backup":true}]

Thank you for this series, the new version and the reviews!

Now in our tree (feat. for net-next):

New patches for t/upstream:
- 9efccfde1d18: tools: ynl: add uns-admin-perm to genetlink legacy
- 34e8d83f1515: net: mptcp: convert netlink from small_ops to ops
- cf4a7c60248c: Documentation: netlink: add a YAML spec for mptcp
- 25385acaa5c7: uapi: mptcp: use header file generated from YAML spec
- 11351fc8e13b: net: mptcp: rename netlink handlers to
mptcp_pm_nl_<blah>_{doit,dumpit}
- 7d081cf1470a: net: mptcp: use policy generated by YAML spec
- Results: bf9368cc6ffb..1c2adc4e573c (export)

Tests are now in progress:

https://cirrus-ci.com/github/multipath-tcp/mptcp_net-next/export/20230923T075423

Cheers,
Matt
-- 
Tessares | Belgium | Hybrid Access Solutions
www.tessares.net