From patchwork Thu Apr 6 17:31:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Davide Caratti X-Patchwork-Id: 13203767 X-Patchwork-Delegate: pabeni@redhat.com Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 24D1DAD35 for ; Thu, 6 Apr 2023 17:32:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1680802339; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ugh6oERBt9LyoxHLkuMuwnL58Uu7GrGim2/OC1ws9u0=; b=fi3KuRZ0YL5stScJCSBkU9K7+z3rv5TS2nPIJDZjOAPbkAiQeM51+U0Nz6qLn+I4bo/vH3 xaMp0bWfiAv3tITGvVeDv0r25ANY0mjJ8m2jNJNWkAYdIm3DbS8UA9bivrdLX69ckh7ofH 9eIzgkLfOB1bxXRH2Nl9pHDgGwaELU4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-66-GJrH5H4tMny_Mo_K4plyzA-1; Thu, 06 Apr 2023 13:32:18 -0400 X-MC-Unique: GJrH5H4tMny_Mo_K4plyzA-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4C13585530F for ; Thu, 6 Apr 2023 17:32:18 +0000 (UTC) Received: from dcaratti.users.ipa.redhat.com (unknown [10.45.225.137]) by smtp.corp.redhat.com (Postfix) with ESMTP id DBF79202701F for ; Thu, 6 Apr 2023 17:32:17 +0000 (UTC) From: Davide Caratti To: mptcp@lists.linux.dev Subject: [PATCH RFC mptcp-net-next 3/5] Documentation: netlink: add a YAML spec for mptcp Date: Thu, 6 Apr 2023 19:31:57 +0200 Message-Id: In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Signed-off-by: Davide Caratti --- Documentation/netlink/specs/mptcp.yaml | 361 +++++++++++++++++++++++++ 1 file changed, 361 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..910307b021ba --- /dev/null +++ b/Documentation/netlink/specs/mptcp.yaml @@ -0,0 +1,361 @@ +# 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: global + +definitions: + - + type: enum + name: event-type + enum-name: mptcp_event_type + name-prefix: mptcp_event_ + entries: + - + name: unspec + - + name: created + value: 1 + 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 + value: 2 + doc: + token, family, saddr4 | saddr6, daddr4 | daddr6, sport, dport + A MPTCP connection is established (can start new subflows). + - + name: closed + value: 3 + 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: addr + 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: attr + name-prefix: mptcp_pm_attr_ + attributes: + - + name: unspec + type: unused + value: 0 + - + name: addr + type: nest + nested-attributes: addr + - + 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: addr + - + 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: attr + flags: [ uns-admin-perm ] + + do: + request: &add_addr_attrs + attributes: + - addr + - + name: del_addr + doc: Delete endpoint + attribute-set: attr + flags: [ uns-admin-perm ] + do: + request: *add_addr_attrs + - + name: get_addr + doc: Get endpoint information + attribute-set: attr + flags: [ uns-admin-perm ] + do: + request: *add_addr_attrs + reply: *add_addr_attrs + + dump: + reply: *add_addr_attrs + - + name: flush_addrs + doc: flush addresses + attribute-set: attr + flags: [ uns-admin-perm ] + do: + request: *add_addr_attrs + - + name: set_limits + doc: Set protocol limits + attribute-set: attr + flags: [ uns-admin-perm ] + do: + request: &mptcp_limits + attributes: + - rcv_add_addrs + - subflows + - + name: get_limits + doc: Get protocol limits + attribute-set: attr + do: + request: *mptcp_limits + reply: *mptcp_limits + - + name: set_flags + doc: Change endpoint flags + attribute-set: attr + flags: [ uns-admin-perm ] + do: + request: *add_addr_attrs + - + name: announce + doc: announce new sf + attribute-set: attr + flags: [ uns-admin-perm ] + do: + request: *add_addr_attrs + reply: *add_addr_attrs + - + name: remove + doc: announce removal + attribute-set: attr + flags: [ uns-admin-perm ] + do: + request: *add_addr_attrs + reply: *add_addr_attrs + - + name: subflow_create + doc: todo + attribute-set: attr + flags: [ uns-admin-perm ] + do: + request: *add_addr_attrs + reply: *add_addr_attrs + - + name: subflow_destroy + doc: todo + attribute-set: attr + flags: [ uns-admin-perm ] + do: + request: *add_addr_attrs + reply: *add_addr_attrs +