From patchwork Mon Apr 22 13:27:06 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 10911001 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 054131708 for ; Mon, 22 Apr 2019 13:28:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E8F51287DC for ; Mon, 22 Apr 2019 13:28:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E6F13287DB; Mon, 22 Apr 2019 13:28:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C7C85286F6 for ; Mon, 22 Apr 2019 13:28:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727428AbfDVN2P (ORCPT ); Mon, 22 Apr 2019 09:28:15 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:36860 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727398AbfDVN2P (ORCPT ); Mon, 22 Apr 2019 09:28:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=GAdLxM7p4FEHHI0wRCWPgpCgzg9KMS2TLKdOXRVH6mM=; b=sYa5VlTA4jsuaP/9qub+4D6RWX EELe3xJGwhPEEVxFKYGLI4biGWXwEEtUhtftlWSeli2+3yAEhUnPppd5zdz2/XyFjmurGALv4GmDY KxVdd31se+dCbbIpXzYS7iBNPGxlw+X8gLueo9p1ClfCx9ygobZExkVoGe0akaIdBnkopqaCfyNTI cunFZ5HN1VMO19t7O9c6FHH0P49LZAD4y3972Ayldlf5sS0bG/IWDz2z5y24J3NHzVHd0jpZenybV 8LqCzVIidb15z02RpQs4JkYB2VvkfWrHS2+YYWQsvV9+VF3DgnG0P8bmZ06Q3YAugkbtmWHg1AEcH hPZQZjiw==; Received: from 179.176.125.229.dynamic.adsl.gvt.net.br ([179.176.125.229] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1hIYzU-0005Hk-RS; Mon, 22 Apr 2019 13:28:13 +0000 Received: from mchehab by bombadil.infradead.org with local (Exim 4.92) (envelope-from ) id 1hIYzS-0005km-O6; Mon, 22 Apr 2019 10:28:10 -0300 From: Mauro Carvalho Chehab To: Linux Doc Mailing List Cc: Mauro Carvalho Chehab , Mauro Carvalho Chehab , linux-kernel@vger.kernel.org, Jonathan Corbet , Doug Ledford , Jason Gunthorpe , linux-rdma@vger.kernel.org Subject: [PATCH v2 17/79] docs: infiniband: convert docs to ReST and rename to *.rst Date: Mon, 22 Apr 2019 10:27:06 -0300 Message-Id: X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The InfiniBand docs are plain text with no markups. So, all we needed to do were to add the title markups and some markup sequences in order to properly parse tables, lists and literal blocks. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab --- .../{core_locking.txt => core_locking.rst} | 64 ++++++----- Documentation/infiniband/index.rst | 23 ++++ .../infiniband/{ipoib.txt => ipoib.rst} | 24 ++-- .../infiniband/{opa_vnic.txt => opa_vnic.rst} | 108 +++++++++--------- .../infiniband/{sysfs.txt => sysfs.rst} | 4 +- .../{tag_matching.txt => tag_matching.rst} | 5 + .../infiniband/{user_mad.txt => user_mad.rst} | 33 ++++-- .../{user_verbs.txt => user_verbs.rst} | 12 +- drivers/infiniband/core/user_mad.c | 2 +- drivers/infiniband/ulp/ipoib/Kconfig | 2 +- 10 files changed, 174 insertions(+), 103 deletions(-) rename Documentation/infiniband/{core_locking.txt => core_locking.rst} (78%) create mode 100644 Documentation/infiniband/index.rst rename Documentation/infiniband/{ipoib.txt => ipoib.rst} (90%) rename Documentation/infiniband/{opa_vnic.txt => opa_vnic.rst} (63%) rename Documentation/infiniband/{sysfs.txt => sysfs.rst} (69%) rename Documentation/infiniband/{tag_matching.txt => tag_matching.rst} (98%) rename Documentation/infiniband/{user_mad.txt => user_mad.rst} (90%) rename Documentation/infiniband/{user_verbs.txt => user_verbs.rst} (93%) diff --git a/Documentation/infiniband/core_locking.txt b/Documentation/infiniband/core_locking.rst similarity index 78% rename from Documentation/infiniband/core_locking.txt rename to Documentation/infiniband/core_locking.rst index 4b1f36b6ada0..f34669beb4fe 100644 --- a/Documentation/infiniband/core_locking.txt +++ b/Documentation/infiniband/core_locking.rst @@ -1,4 +1,6 @@ -INFINIBAND MIDLAYER LOCKING +=========================== +InfiniBand Midlayer Locking +=========================== This guide is an attempt to make explicit the locking assumptions made by the InfiniBand midlayer. It describes the requirements on @@ -6,45 +8,47 @@ INFINIBAND MIDLAYER LOCKING protocols that use the midlayer. Sleeping and interrupt context +============================== With the following exceptions, a low-level driver implementation of all of the methods in struct ib_device may sleep. The exceptions are any methods from the list: - create_ah - modify_ah - query_ah - destroy_ah - post_send - post_recv - poll_cq - req_notify_cq - map_phys_fmr + - create_ah + - modify_ah + - query_ah + - destroy_ah + - post_send + - post_recv + - poll_cq + - req_notify_cq + - map_phys_fmr which may not sleep and must be callable from any context. The corresponding functions exported to upper level protocol consumers: - ib_create_ah - ib_modify_ah - ib_query_ah - ib_destroy_ah - ib_post_send - ib_post_recv - ib_req_notify_cq - ib_map_phys_fmr + - ib_create_ah + - ib_modify_ah + - ib_query_ah + - ib_destroy_ah + - ib_post_send + - ib_post_recv + - ib_req_notify_cq + - ib_map_phys_fmr are therefore safe to call from any context. In addition, the function - ib_dispatch_event + - ib_dispatch_event used by low-level drivers to dispatch asynchronous events through the midlayer is also safe to call from any context. Reentrancy +---------- All of the methods in struct ib_device exported by a low-level driver must be fully reentrant. The low-level driver is required to @@ -62,6 +66,7 @@ Reentrancy information between different calls of ib_poll_cq() is not defined. Callbacks +--------- A low-level driver must not perform a callback directly from the same callchain as an ib_device method call. For example, it is not @@ -74,18 +79,18 @@ Callbacks completion event handlers for the same CQ are not called simultaneously. The driver must guarantee that only one CQ event handler for a given CQ is running at a time. In other words, the - following situation is not allowed: + following situation is not allowed:: - CPU1 CPU2 + CPU1 CPU2 - low-level driver -> - consumer CQ event callback: - /* ... */ - ib_req_notify_cq(cq, ...); - low-level driver -> - /* ... */ consumer CQ event callback: - /* ... */ - return from CQ event handler + low-level driver -> + consumer CQ event callback: + /* ... */ + ib_req_notify_cq(cq, ...); + low-level driver -> + /* ... */ consumer CQ event callback: + /* ... */ + return from CQ event handler The context in which completion event and asynchronous event callbacks run is not defined. Depending on the low-level driver, it @@ -93,6 +98,7 @@ Callbacks Upper level protocol consumers may not sleep in a callback. Hot-plug +-------- A low-level driver announces that a device is ready for use by consumers when it calls ib_register_device(), all initialization diff --git a/Documentation/infiniband/index.rst b/Documentation/infiniband/index.rst new file mode 100644 index 000000000000..22eea64de722 --- /dev/null +++ b/Documentation/infiniband/index.rst @@ -0,0 +1,23 @@ +:orphan: + +========== +InfiniBand +========== + +.. toctree:: + :maxdepth: 1 + + core_locking + ipoib + opa_vnic + sysfs + tag_matching + user_mad + user_verbs + +.. only:: subproject and html + + Indices + ======= + + * :ref:`genindex` diff --git a/Documentation/infiniband/ipoib.txt b/Documentation/infiniband/ipoib.rst similarity index 90% rename from Documentation/infiniband/ipoib.txt rename to Documentation/infiniband/ipoib.rst index 47c1dd9818f2..0dd36154c0c9 100644 --- a/Documentation/infiniband/ipoib.txt +++ b/Documentation/infiniband/ipoib.rst @@ -1,4 +1,6 @@ -IP OVER INFINIBAND +================== +IP over InfiniBand +================== The ib_ipoib driver is an implementation of the IP over InfiniBand protocol as specified by RFC 4391 and 4392, issued by the IETF ipoib @@ -8,16 +10,17 @@ IP OVER INFINIBAND masqueraded to the kernel as ethernet interfaces). Partitions and P_Keys +===================== When the IPoIB driver is loaded, it creates one interface for each port using the P_Key at index 0. To create an interface with a different P_Key, write the desired P_Key into the main interface's - /sys/class/net//create_child file. For example: + /sys/class/net//create_child file. For example:: echo 0x8001 > /sys/class/net/ib0/create_child This will create an interface named ib0.8001 with P_Key 0x8001. To - remove a subinterface, use the "delete_child" file: + remove a subinterface, use the "delete_child" file:: echo 0x8001 > /sys/class/net/ib0/delete_child @@ -28,6 +31,7 @@ Partitions and P_Keys rtnl_link_ops, where children created using either way behave the same. Datagram vs Connected modes +=========================== The IPoIB driver supports two modes of operation: datagram and connected. The mode is set and read through an interface's @@ -51,6 +55,7 @@ Datagram vs Connected modes networking stack to use the smaller UD MTU for these neighbours. Stateless offloads +================== If the IB HW supports IPoIB stateless offloads, IPoIB advertises TCP/IP checksum and/or Large Send (LSO) offloading capability to the @@ -60,9 +65,10 @@ Stateless offloads on/off using ethtool calls. Currently LRO is supported only for checksum offload capable devices. - Stateless offloads are supported only in datagram mode. + Stateless offloads are supported only in datagram mode. Interrupt moderation +==================== If the underlying IB device supports CQ event moderation, one can use ethtool to set interrupt mitigation parameters and thus reduce @@ -71,6 +77,7 @@ Interrupt moderation moderation is supported. Debugging Information +===================== By compiling the IPoIB driver with CONFIG_INFINIBAND_IPOIB_DEBUG set to 'y', tracing messages are compiled into the driver. They are @@ -79,7 +86,7 @@ Debugging Information runtime through files in /sys/module/ib_ipoib/. CONFIG_INFINIBAND_IPOIB_DEBUG also enables files in the debugfs - virtual filesystem. By mounting this filesystem, for example with + virtual filesystem. By mounting this filesystem, for example with:: mount -t debugfs none /sys/kernel/debug @@ -96,10 +103,13 @@ Debugging Information performance, because it adds tests to the fast path. References +========== Transmission of IP over InfiniBand (IPoIB) (RFC 4391) - http://ietf.org/rfc/rfc4391.txt + http://ietf.org/rfc/rfc4391.txt + IP over InfiniBand (IPoIB) Architecture (RFC 4392) - http://ietf.org/rfc/rfc4392.txt + http://ietf.org/rfc/rfc4392.txt + IP over InfiniBand: Connected Mode (RFC 4755) http://ietf.org/rfc/rfc4755.txt diff --git a/Documentation/infiniband/opa_vnic.txt b/Documentation/infiniband/opa_vnic.rst similarity index 63% rename from Documentation/infiniband/opa_vnic.txt rename to Documentation/infiniband/opa_vnic.rst index 282e17be798a..2f888d9ffec0 100644 --- a/Documentation/infiniband/opa_vnic.txt +++ b/Documentation/infiniband/opa_vnic.rst @@ -1,3 +1,7 @@ +================================================================= +Intel Omni-Path (OPA) Virtual Network Interface Controller (VNIC) +================================================================= + Intel Omni-Path (OPA) Virtual Network Interface Controller (VNIC) feature supports Ethernet functionality over Omni-Path fabric by encapsulating the Ethernet packets between HFI nodes. @@ -17,70 +21,72 @@ an independent Ethernet network. The configuration is performed by an Ethernet Manager (EM) which is part of the trusted Fabric Manager (FM) application. HFI nodes can have multiple VNICs each connected to a different virtual Ethernet switch. The below diagram presents a case -of two virtual Ethernet switches with two HFI nodes. +of two virtual Ethernet switches with two HFI nodes:: - +-------------------+ - | Subnet/ | - | Ethernet | - | Manager | - +-------------------+ - / / - / / - / / - / / -+-----------------------------+ +------------------------------+ -| Virtual Ethernet Switch | | Virtual Ethernet Switch | -| +---------+ +---------+ | | +---------+ +---------+ | -| | VPORT | | VPORT | | | | VPORT | | VPORT | | -+--+---------+----+---------+-+ +-+---------+----+---------+---+ - | \ / | - | \ / | - | \/ | - | / \ | - | / \ | - +-----------+------------+ +-----------+------------+ - | VNIC | VNIC | | VNIC | VNIC | - +-----------+------------+ +-----------+------------+ - | HFI | | HFI | - +------------------------+ +------------------------+ + +-------------------+ + | Subnet/ | + | Ethernet | + | Manager | + +-------------------+ + / / + / / + / / + / / + +-----------------------------+ +------------------------------+ + | Virtual Ethernet Switch | | Virtual Ethernet Switch | + | +---------+ +---------+ | | +---------+ +---------+ | + | | VPORT | | VPORT | | | | VPORT | | VPORT | | + +--+---------+----+---------+-+ +-+---------+----+---------+---+ + | \ / | + | \ / | + | \/ | + | / \ | + | / \ | + +-----------+------------+ +-----------+------------+ + | VNIC | VNIC | | VNIC | VNIC | + +-----------+------------+ +-----------+------------+ + | HFI | | HFI | + +------------------------+ +------------------------+ The Omni-Path encapsulated Ethernet packet format is as described below. -Bits Field ------------------------------------- +==================== ================================ +Bits Field +==================== ================================ Quad Word 0: -0-19 SLID (lower 20 bits) -20-30 Length (in Quad Words) -31 BECN bit -32-51 DLID (lower 20 bits) -52-56 SC (Service Class) -57-59 RC (Routing Control) -60 FECN bit -61-62 L2 (=10, 16B format) -63 LT (=1, Link Transfer Head Flit) +0-19 SLID (lower 20 bits) +20-30 Length (in Quad Words) +31 BECN bit +32-51 DLID (lower 20 bits) +52-56 SC (Service Class) +57-59 RC (Routing Control) +60 FECN bit +61-62 L2 (=10, 16B format) +63 LT (=1, Link Transfer Head Flit) Quad Word 1: -0-7 L4 type (=0x78 ETHERNET) -8-11 SLID[23:20] -12-15 DLID[23:20] -16-31 PKEY -32-47 Entropy -48-63 Reserved +0-7 L4 type (=0x78 ETHERNET) +8-11 SLID[23:20] +12-15 DLID[23:20] +16-31 PKEY +32-47 Entropy +48-63 Reserved Quad Word 2: -0-15 Reserved -16-31 L4 header -32-63 Ethernet Packet +0-15 Reserved +16-31 L4 header +32-63 Ethernet Packet Quad Words 3 to N-1: -0-63 Ethernet packet (pad extended) +0-63 Ethernet packet (pad extended) Quad Word N (last): -0-23 Ethernet packet (pad extended) -24-55 ICRC -56-61 Tail -62-63 LT (=01, Link Transfer Tail Flit) +0-23 Ethernet packet (pad extended) +24-55 ICRC +56-61 Tail +62-63 LT (=01, Link Transfer Tail Flit) +==================== ================================ Ethernet packet is padded on the transmit side to ensure that the VNIC OPA packet is quad word aligned. The 'Tail' field contains the number of bytes @@ -123,7 +129,7 @@ operation. It also handles the encapsulation of Ethernet packets with an Omni-Path header in the transmit path. For each VNIC interface, the information required for encapsulation is configured by the EM via VEMA MAD interface. It also passes any control information to the HW dependent driver -by invoking the RDMA netdev control operations. +by invoking the RDMA netdev control operations:: +-------------------+ +----------------------+ | | | Linux | diff --git a/Documentation/infiniband/sysfs.txt b/Documentation/infiniband/sysfs.rst similarity index 69% rename from Documentation/infiniband/sysfs.txt rename to Documentation/infiniband/sysfs.rst index 9fab5062f84b..f0abd6fa48f4 100644 --- a/Documentation/infiniband/sysfs.txt +++ b/Documentation/infiniband/sysfs.rst @@ -1,4 +1,6 @@ -SYSFS FILES +=========== +Sysfs files +=========== The sysfs interface has moved to Documentation/ABI/stable/sysfs-class-infiniband. diff --git a/Documentation/infiniband/tag_matching.txt b/Documentation/infiniband/tag_matching.rst similarity index 98% rename from Documentation/infiniband/tag_matching.txt rename to Documentation/infiniband/tag_matching.rst index d2a3bf819226..ef56ea585f92 100644 --- a/Documentation/infiniband/tag_matching.txt +++ b/Documentation/infiniband/tag_matching.rst @@ -1,12 +1,16 @@ +================== Tag matching logic +================== The MPI standard defines a set of rules, known as tag-matching, for matching source send operations to destination receives. The following parameters must match the following source and destination parameters: + * Communicator * User tag - wild card may be specified by the receiver * Source rank – wild car may be specified by the receiver * Destination rank – wild + The ordering rules require that when more than one pair of send and receive message envelopes may match, the pair that includes the earliest posted-send and the earliest posted-receive is the pair that must be used to satisfy the @@ -35,6 +39,7 @@ the header to initiate an RDMA READ operation directly to the matching buffer. A fin message needs to be received in order for the buffer to be reused. Tag matching implementation +=========================== There are two types of matching objects used, the posted receive list and the unexpected message list. The application posts receive buffers through calls diff --git a/Documentation/infiniband/user_mad.txt b/Documentation/infiniband/user_mad.rst similarity index 90% rename from Documentation/infiniband/user_mad.txt rename to Documentation/infiniband/user_mad.rst index 7aca13a54a3a..d88abfc0e370 100644 --- a/Documentation/infiniband/user_mad.txt +++ b/Documentation/infiniband/user_mad.rst @@ -1,6 +1,9 @@ -USERSPACE MAD ACCESS +==================== +Userspace MAD access +==================== Device files +============ Each port of each InfiniBand device has a "umad" device and an "issm" device attached. For example, a two-port HCA will have two @@ -8,12 +11,13 @@ Device files device of each type (for switch port 0). Creating MAD agents +=================== A MAD agent can be created by filling in a struct ib_user_mad_reg_req and then calling the IB_USER_MAD_REGISTER_AGENT ioctl on a file descriptor for the appropriate device file. If the registration request succeeds, a 32-bit id will be returned in the structure. - For example: + For example:: struct ib_user_mad_reg_req req = { /* ... */ }; ret = ioctl(fd, IB_USER_MAD_REGISTER_AGENT, (char *) &req); @@ -26,12 +30,14 @@ Creating MAD agents ioctl. Also, all agents registered through a file descriptor will be unregistered when the descriptor is closed. - 2014 -- a new registration ioctl is now provided which allows additional + 2014 + a new registration ioctl is now provided which allows additional fields to be provided during registration. Users of this registration call are implicitly setting the use of pkey_index (see below). Receiving MADs +============== MADs are received using read(). The receive side now supports RMPP. The buffer passed to read() must be at least one @@ -41,7 +47,8 @@ Receiving MADs MAD (RMPP), the errno is set to ENOSPC and the length of the buffer needed is set in mad.length. - Example for normal MAD (non RMPP) reads: + Example for normal MAD (non RMPP) reads:: + struct ib_user_mad *mad; mad = malloc(sizeof *mad + 256); ret = read(fd, mad, sizeof *mad + 256); @@ -50,7 +57,8 @@ Receiving MADs free(mad); } - Example for RMPP reads: + Example for RMPP reads:: + struct ib_user_mad *mad; mad = malloc(sizeof *mad + 256); ret = read(fd, mad, sizeof *mad + 256); @@ -76,11 +84,12 @@ Receiving MADs poll()/select() may be used to wait until a MAD can be read. Sending MADs +============ MADs are sent using write(). The agent ID for sending should be filled into the id field of the MAD, the destination LID should be filled into the lid field, and so on. The send side does support - RMPP so arbitrary length MAD can be sent. For example: + RMPP so arbitrary length MAD can be sent. For example:: struct ib_user_mad *mad; @@ -97,6 +106,7 @@ Sending MADs perror("write"); Transaction IDs +=============== Users of the umad devices can use the lower 32 bits of the transaction ID field (that is, the least significant half of the @@ -105,6 +115,7 @@ Transaction IDs the kernel and will be overwritten before a MAD is sent. P_Key Index Handling +==================== The old ib_umad interface did not allow setting the P_Key index for MADs that are sent and did not provide a way for obtaining the P_Key @@ -119,6 +130,7 @@ P_Key Index Handling default, and the IB_USER_MAD_ENABLE_PKEY ioctl will be removed. Setting IsSM Capability Bit +=========================== To set the IsSM capability bit for a port, simply open the corresponding issm device file. If the IsSM bit is already set, @@ -129,25 +141,26 @@ Setting IsSM Capability Bit the issm file. /dev files +========== To create the appropriate character device files automatically with - udev, a rule like + udev, a rule like:: KERNEL=="umad*", NAME="infiniband/%k" KERNEL=="issm*", NAME="infiniband/%k" - can be used. This will create device nodes named + can be used. This will create device nodes named:: /dev/infiniband/umad0 /dev/infiniband/issm0 for the first port, and so on. The InfiniBand device and port - associated with these devices can be determined from the files + associated with these devices can be determined from the files:: /sys/class/infiniband_mad/umad0/ibdev /sys/class/infiniband_mad/umad0/port - and + and:: /sys/class/infiniband_mad/issm0/ibdev /sys/class/infiniband_mad/issm0/port diff --git a/Documentation/infiniband/user_verbs.txt b/Documentation/infiniband/user_verbs.rst similarity index 93% rename from Documentation/infiniband/user_verbs.txt rename to Documentation/infiniband/user_verbs.rst index 47ebf2f80b2b..8ddc4b1cfef2 100644 --- a/Documentation/infiniband/user_verbs.txt +++ b/Documentation/infiniband/user_verbs.rst @@ -1,4 +1,6 @@ -USERSPACE VERBS ACCESS +====================== +Userspace verbs access +====================== The ib_uverbs module, built by enabling CONFIG_INFINIBAND_USER_VERBS, enables direct userspace access to IB hardware via "verbs," as @@ -13,6 +15,7 @@ USERSPACE VERBS ACCESS libmthca userspace driver be installed. User-kernel communication +========================= Userspace communicates with the kernel for slow path, resource management operations via the /dev/infiniband/uverbsN character @@ -28,6 +31,7 @@ User-kernel communication system call. Resource management +=================== Since creation and destruction of all IB resources is done by commands passed through a file descriptor, the kernel can keep track @@ -41,6 +45,7 @@ Resource management prevent one process from touching another process's resources. Memory pinning +============== Direct userspace I/O requires that memory regions that are potential I/O targets be kept resident at the same physical address. The @@ -54,13 +59,14 @@ Memory pinning number of pages pinned by a process. /dev files +========== To create the appropriate character device files automatically with - udev, a rule like + udev, a rule like:: KERNEL=="uverbs*", NAME="infiniband/%k" - can be used. This will create device nodes named + can be used. This will create device nodes named:: /dev/infiniband/uverbs0 diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c index 56aa34206110..478018f74d35 100644 --- a/drivers/infiniband/core/user_mad.c +++ b/drivers/infiniband/core/user_mad.c @@ -744,7 +744,7 @@ static int ib_umad_reg_agent(struct ib_umad_file *file, void __user *arg, "process %s did not enable P_Key index support.\n", current->comm); dev_warn(&file->port->dev, - " Documentation/infiniband/user_mad.txt has info on the new ABI.\n"); + " Documentation/infiniband/user_mad.rst has info on the new ABI.\n"); } } diff --git a/drivers/infiniband/ulp/ipoib/Kconfig b/drivers/infiniband/ulp/ipoib/Kconfig index cda8eac55fff..569d614d0c41 100644 --- a/drivers/infiniband/ulp/ipoib/Kconfig +++ b/drivers/infiniband/ulp/ipoib/Kconfig @@ -6,7 +6,7 @@ config INFINIBAND_IPOIB transports IP packets over InfiniBand so you can use your IB device as a fancy NIC. - See Documentation/infiniband/ipoib.txt for more information + See Documentation/infiniband/ipoib.rst for more information config INFINIBAND_IPOIB_CM bool "IP-over-InfiniBand Connected Mode support" From patchwork Mon Apr 22 13:27:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 10911059 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2752814DB for ; Mon, 22 Apr 2019 13:34:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 11A932863B for ; Mon, 22 Apr 2019 13:34:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F047C28684; Mon, 22 Apr 2019 13:34:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DC38128684 for ; Mon, 22 Apr 2019 13:34:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727625AbfDVNdf (ORCPT ); Mon, 22 Apr 2019 09:33:35 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:37580 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727517AbfDVN2T (ORCPT ); Mon, 22 Apr 2019 09:28:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=9FSCHNjHRgeztK2TK6JhjXCJlUE5U9iz6iJbTMXKYr0=; b=abOHLcTkrW5NDNAPOZftrbgQC+ ymfE4ia+4Ky7UrI6sldexAWGf/7rCAjLRp5Z2lKVAT/aA4/z9dWofIQdaQJiNnoBTA8MUyGAC/xEa lIuBVyOwTJWJOkm7Vsfy4/7TLjXbAmvyyPs64bbjbo5BV1zdXC/o3K74jwTq53WTKK7QjwL6TWgk0 QSm7I9c73eId1wKoxDtfEGdu56ICGyvL454paYw3SE1vX/wIP1rq+dBZM8iApb7aNnPQXn/SdkcZQ n1/eRwIcpbyHd7l5Ce14DpUUBcSqadW59IM74j9xwQ86gYIQH5gi88Rusqgnk7i/0VKyFKsji8px9 MTdIE14A==; Received: from 179.176.125.229.dynamic.adsl.gvt.net.br ([179.176.125.229] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1hIYzZ-0005Hp-Fm; Mon, 22 Apr 2019 13:28:18 +0000 Received: from mchehab by bombadil.infradead.org with local (Exim 4.92) (envelope-from ) id 1hIYzU-0005ob-AX; Mon, 22 Apr 2019 10:28:12 -0300 From: Mauro Carvalho Chehab To: Linux Doc Mailing List Cc: Mauro Carvalho Chehab , Mauro Carvalho Chehab , linux-kernel@vger.kernel.org, Jonathan Corbet , Federico Vaga , Harry Wei , Alex Shi , Doug Ledford , Jason Gunthorpe , linux-rdma@vger.kernel.org Subject: [PATCH v2 64/79] docs: ioctl-number.txt: convert it to ReST format Date: Mon, 22 Apr 2019 10:27:53 -0300 Message-Id: <16911408d1ac64c0df5ef3ecdae9cf1cc2df58e4.1555938376.git.mchehab+samsung@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The conversion itself is simple: add a markup for the title of this file and add markups for both tables. Yet, the big table here with IOCTL numbers is badly formatted: on several lines, the "Include File" column has some values that are bigger than the reserved space there. Also, on several places, a comment was misplaced at the "Include File" space. So, most of the work here is to actually ensure that each field will be properly fixed. Also worth to mention that some URLs have the asterisk character on it. Well, Sphinx has an issue with asterisks in the middle of an string. As this is URL, use the alternate format: %2A. As a side effect of this patch, it is now a lot easier to see that some reserved ioctl numbers are missing the include files where it is supposed to be used. PS.: While this is part of a subdir, I opted to convert this single file alone, as this file has a potential of conflicts, as most subsystem maintainers touch it. Signed-off-by: Mauro Carvalho Chehab --- Documentation/ioctl/ioctl-number.rst | 360 ++++++++++++++++++ Documentation/ioctl/ioctl-number.txt | 350 ----------------- Documentation/process/submit-checklist.rst | 2 +- .../it_IT/process/submit-checklist.rst | 2 +- .../zh_CN/process/submit-checklist.rst | 2 +- include/uapi/rdma/rdma_user_ioctl_cmds.h | 2 +- 6 files changed, 364 insertions(+), 354 deletions(-) create mode 100644 Documentation/ioctl/ioctl-number.rst delete mode 100644 Documentation/ioctl/ioctl-number.txt diff --git a/Documentation/ioctl/ioctl-number.rst b/Documentation/ioctl/ioctl-number.rst new file mode 100644 index 000000000000..597111dcca0c --- /dev/null +++ b/Documentation/ioctl/ioctl-number.rst @@ -0,0 +1,360 @@ +============= +Ioctl Numbers +============= + +19 October 1999 + +Michael Elizabeth Chastain + + +If you are adding new ioctl's to the kernel, you should use the _IO +macros defined in : + + ====== == ============================================ + _IO an ioctl with no parameters + _IOW an ioctl with write parameters (copy_from_user) + _IOR an ioctl with read parameters (copy_to_user) + _IOWR an ioctl with both write and read parameters. + ====== == ============================================ + +'Write' and 'read' are from the user's point of view, just like the +system calls 'write' and 'read'. For example, a SET_FOO ioctl would +be _IOW, although the kernel would actually read data from user space; +a GET_FOO ioctl would be _IOR, although the kernel would actually write +data to user space. + +The first argument to _IO, _IOW, _IOR, or _IOWR is an identifying letter +or number from the table below. Because of the large number of drivers, +many drivers share a partial letter with other drivers. + +If you are writing a driver for a new device and need a letter, pick an +unused block with enough room for expansion: 32 to 256 ioctl commands. +You can register the block by patching this file and submitting the +patch to Linus Torvalds. Or you can e-mail me at and +I'll register one for you. + +The second argument to _IO, _IOW, _IOR, or _IOWR is a sequence number +to distinguish ioctls from each other. The third argument to _IOW, +_IOR, or _IOWR is the type of the data going into the kernel or coming +out of the kernel (e.g. 'int' or 'struct foo'). NOTE! Do NOT use +sizeof(arg) as the third argument as this results in your ioctl thinking +it passes an argument of type size_t. + +Some devices use their major number as the identifier; this is OK, as +long as it is unique. Some devices are irregular and don't follow any +convention at all. + +Following this convention is good because: + +(1) Keeping the ioctl's globally unique helps error checking: + if a program calls an ioctl on the wrong device, it will get an + error rather than some unexpected behaviour. + +(2) The 'strace' build procedure automatically finds ioctl numbers + defined with _IO, _IOW, _IOR, or _IOWR. + +(3) 'strace' can decode numbers back into useful names when the + numbers are unique. + +(4) People looking for ioctls can grep for them more easily when + this convention is used to define the ioctl numbers. + +(5) When following the convention, the driver code can use generic + code to copy the parameters between user and kernel space. + +This table lists ioctls visible from user land for Linux/x86. It contains +most drivers up to 2.6.31, but I know I am missing some. There has been +no attempt to list non-X86 architectures or ioctls from drivers/staging/. + +==== ===== ======================================================= ================================================================ +Code Seq# Include File Comments + (hex) +==== ===== ======================================================= ================================================================ +0x00 00-1F linux/fs.h conflict! +0x00 00-1F scsi/scsi_ioctl.h conflict! +0x00 00-1F linux/fb.h conflict! +0x00 00-1F linux/wavefront.h conflict! +0x02 all linux/fd.h +0x03 all linux/hdreg.h +0x04 D2-DC linux/umsdos_fs.h Dead since 2.6.11, but don't reuse these. +0x06 all linux/lp.h +0x09 all linux/raid/md_u.h +0x10 00-0F drivers/char/s390/vmcp.h +0x10 10-1F arch/s390/include/uapi/sclp_ctl.h +0x10 20-2F arch/s390/include/uapi/asm/hypfs.h +0x12 all linux/fs.h + linux/blkpg.h +0x1b all InfiniBand Subsystem + +0x20 all drivers/cdrom/cm206.h +0x22 all scsi/sg.h +'!' 00-1F uapi/linux/seccomp.h +'#' 00-3F IEEE 1394 Subsystem + Block for the entire subsystem +'$' 00-0F linux/perf_counter.h, linux/perf_event.h +'%' 00-0F include/uapi/linux/stm.h System Trace Module subsystem + +'&' 00-07 drivers/firewire/nosy-user.h +'1' 00-1F linux/timepps.h PPS kit from Ulrich Windl + +'2' 01-04 linux/i2o.h +'3' 00-0F drivers/s390/char/raw3270.h conflict! +'3' 00-1F linux/suspend_ioctls.h, conflict! + kernel/power/user.c +'8' all SNP8023 advanced NIC card + +';' 64-7F linux/vfio.h +'@' 00-0F linux/radeonfb.h conflict! +'@' 00-0F drivers/video/aty/aty128fb.c conflict! +'A' 00-1F linux/apm_bios.h conflict! +'A' 00-0F linux/agpgart.h, conflict! + drivers/char/agp/compat_ioctl.h +'A' 00-7F sound/asound.h conflict! +'B' 00-1F linux/cciss_ioctl.h conflict! +'B' 00-0F include/linux/pmu.h conflict! +'B' C0-FF advanced bbus +'C' all linux/soundcard.h conflict! +'C' 01-2F linux/capi.h conflict! +'C' F0-FF drivers/net/wan/cosa.h conflict! +'D' all arch/s390/include/asm/dasd.h +'D' 40-5F drivers/scsi/dpt/dtpi_ioctl.h +'D' 05 drivers/scsi/pmcraid.h +'E' all linux/input.h conflict! +'E' 00-0F xen/evtchn.h conflict! +'F' all linux/fb.h conflict! +'F' 01-02 drivers/scsi/pmcraid.h conflict! +'F' 20 drivers/video/fsl-diu-fb.h conflict! +'F' 20 drivers/video/intelfb/intelfb.h conflict! +'F' 20 linux/ivtvfb.h conflict! +'F' 20 linux/matroxfb.h conflict! +'F' 20 drivers/video/aty/atyfb_base.c conflict! +'F' 00-0F video/da8xx-fb.h conflict! +'F' 80-8F linux/arcfb.h conflict! +'F' DD video/sstfb.h conflict! +'G' 00-3F drivers/misc/sgi-gru/grulib.h conflict! +'G' 00-0F linux/gigaset_dev.h conflict! +'H' 00-7F linux/hiddev.h conflict! +'H' 00-0F linux/hidraw.h conflict! +'H' 01 linux/mei.h conflict! +'H' 02 linux/mei.h conflict! +'H' 03 linux/mei.h conflict! +'H' 00-0F sound/asound.h conflict! +'H' 20-40 sound/asound_fm.h conflict! +'H' 80-8F sound/sfnt_info.h conflict! +'H' 10-8F sound/emu10k1.h conflict! +'H' 10-1F sound/sb16_csp.h conflict! +'H' 10-1F sound/hda_hwdep.h conflict! +'H' 40-4F sound/hdspm.h conflict! +'H' 40-4F sound/hdsp.h conflict! +'H' 90 sound/usb/usx2y/usb_stream.h +'H' A0 uapi/linux/usb/cdc-wdm.h +'H' C0-F0 net/bluetooth/hci.h conflict! +'H' C0-DF net/bluetooth/hidp/hidp.h conflict! +'H' C0-DF net/bluetooth/cmtp/cmtp.h conflict! +'H' C0-DF net/bluetooth/bnep/bnep.h conflict! +'H' F1 linux/hid-roccat.h +'H' F8-FA sound/firewire.h +'I' all linux/isdn.h conflict! +'I' 00-0F drivers/isdn/divert/isdn_divert.h conflict! +'I' 40-4F linux/mISDNif.h conflict! +'J' 00-1F drivers/scsi/gdth_ioctl.h +'K' all linux/kd.h +'L' 00-1F linux/loop.h conflict! +'L' 10-1F drivers/scsi/mpt3sas/mpt3sas_ctl.h conflict! +'L' 20-2F linux/lightnvm.h +'L' E0-FF linux/ppdd.h encrypted disk device driver + +'M' all linux/soundcard.h conflict! +'M' 01-16 mtd/mtd-abi.h conflict! + and drivers/mtd/mtdchar.c +'M' 01-03 drivers/scsi/megaraid/megaraid_sas.h +'M' 00-0F drivers/video/fsl-diu-fb.h conflict! +'N' 00-1F drivers/usb/scanner.h +'N' 40-7F drivers/block/nvme.c +'O' 00-06 mtd/ubi-user.h UBI +'P' all linux/soundcard.h conflict! +'P' 60-6F sound/sscape_ioctl.h conflict! +'P' 00-0F drivers/usb/class/usblp.c conflict! +'P' 01-09 drivers/misc/pci_endpoint_test.c conflict! +'Q' all linux/soundcard.h +'R' 00-1F linux/random.h conflict! +'R' 01 linux/rfkill.h conflict! +'R' C0-DF net/bluetooth/rfcomm.h +'S' all linux/cdrom.h conflict! +'S' 80-81 scsi/scsi_ioctl.h conflict! +'S' 82-FF scsi/scsi.h conflict! +'S' 00-7F sound/asequencer.h conflict! +'T' all linux/soundcard.h conflict! +'T' 00-AF sound/asound.h conflict! +'T' all arch/x86/include/asm/ioctls.h conflict! +'T' C0-DF linux/if_tun.h conflict! +'U' all sound/asound.h conflict! +'U' 00-CF linux/uinput.h conflict! +'U' 00-EF linux/usbdevice_fs.h +'U' C0-CF drivers/bluetooth/hci_uart.h +'V' all linux/vt.h conflict! +'V' all linux/videodev2.h conflict! +'V' C0 linux/ivtvfb.h conflict! +'V' C0 linux/ivtv.h conflict! +'V' C0 media/davinci/vpfe_capture.h conflict! +'V' C0 media/si4713.h conflict! +'W' 00-1F linux/watchdog.h conflict! +'W' 00-1F linux/wanrouter.h conflict! (pre 3.9) +'W' 00-3F sound/asound.h conflict! +'W' 40-5F drivers/pci/switch/switchtec.c +'X' all fs/xfs/xfs_fs.h, conflict! + fs/xfs/linux-2.6/xfs_ioctl32.h, + include/linux/falloc.h, + linux/fs.h, +'X' all fs/ocfs2/ocfs_fs.h conflict! +'X' 01 linux/pktcdvd.h conflict! +'Y' all linux/cyclades.h +'Z' 14-15 drivers/message/fusion/mptctl.h +'[' 00-3F linux/usb/tmc.h USB Test and Measurement Devices + +'a' all linux/atm*.h, linux/sonet.h ATM on linux + +'a' 00-0F drivers/crypto/qat/qat_common/adf_cfg_common.h conflict! qat driver +'b' 00-FF conflict! bit3 vme host bridge + +'c' all linux/cm4000_cs.h conflict! +'c' 00-7F linux/comstats.h conflict! +'c' 00-7F linux/coda.h conflict! +'c' 00-1F linux/chio.h conflict! +'c' 80-9F arch/s390/include/asm/chsc.h conflict! +'c' A0-AF arch/x86/include/asm/msr.h conflict! +'d' 00-FF linux/char/drm/drm.h conflict! +'d' 02-40 pcmcia/ds.h conflict! +'d' F0-FF linux/digi1.h +'e' all linux/digi1.h conflict! +'f' 00-1F linux/ext2_fs.h conflict! +'f' 00-1F linux/ext3_fs.h conflict! +'f' 00-0F fs/jfs/jfs_dinode.h conflict! +'f' 00-0F fs/ext4/ext4.h conflict! +'f' 00-0F linux/fs.h conflict! +'f' 00-0F fs/ocfs2/ocfs2_fs.h conflict! +'g' 00-0F linux/usb/gadgetfs.h +'g' 20-2F linux/usb/g_printer.h +'h' 00-7F conflict! Charon filesystem + +'h' 00-1F linux/hpet.h conflict! +'h' 80-8F fs/hfsplus/ioctl.c +'i' 00-3F linux/i2o-dev.h conflict! +'i' 0B-1F linux/ipmi.h conflict! +'i' 80-8F linux/i8k.h +'j' 00-3F linux/joystick.h +'k' 00-0F linux/spi/spidev.h conflict! +'k' 00-05 video/kyro.h conflict! +'k' 10-17 linux/hsi/hsi_char.h HSI character device +'l' 00-3F linux/tcfs_fs.h transparent cryptographic file system + +'l' 40-7F linux/udf_fs_i.h in development: + +'m' 00-09 linux/mmtimer.h conflict! +'m' all linux/mtio.h conflict! +'m' all linux/soundcard.h conflict! +'m' all linux/synclink.h conflict! +'m' 00-19 drivers/message/fusion/mptctl.h conflict! +'m' 00 drivers/scsi/megaraid/megaraid_ioctl.h conflict! +'n' 00-7F linux/ncp_fs.h and fs/ncpfs/ioctl.c +'n' 80-8F uapi/linux/nilfs2_api.h NILFS2 +'n' E0-FF linux/matroxfb.h matroxfb +'o' 00-1F fs/ocfs2/ocfs2_fs.h OCFS2 +'o' 00-03 mtd/ubi-user.h conflict! (OCFS2 and UBI overlaps) +'o' 40-41 mtd/ubi-user.h UBI +'o' 01-A1 `linux/dvb/*.h` DVB +'p' 00-0F linux/phantom.h conflict! (OpenHaptics needs this) +'p' 00-1F linux/rtc.h conflict! +'p' 00-3F linux/mc146818rtc.h conflict! +'p' 40-7F linux/nvram.h +'p' 80-9F linux/ppdev.h user-space parport + +'p' A1-A5 linux/pps.h LinuxPPS + +'q' 00-1F linux/serio.h +'q' 80-FF linux/telephony.h Internet PhoneJACK, Internet LineJACK + linux/ixjuser.h +'r' 00-1F linux/msdos_fs.h and fs/fat/dir.c +'s' all linux/cdk.h +'t' 00-7F linux/ppp-ioctl.h +'t' 80-8F linux/isdn_ppp.h +'t' 90-91 linux/toshiba.h toshiba and toshiba_acpi SMM +'u' 00-1F linux/smb_fs.h gone +'u' 20-3F linux/uvcvideo.h USB video class host driver +'u' 40-4f linux/udmabuf.h userspace dma-buf misc device +'v' 00-1F linux/ext2_fs.h conflict! +'v' 00-1F linux/fs.h conflict! +'v' 00-0F linux/sonypi.h conflict! +'v' 00-0F media/v4l2-subdev.h conflict! +'v' C0-FF linux/meye.h conflict! +'w' all CERN SCI driver +'y' 00-1F packet based user level communications + +'z' 00-3F CAN bus card conflict! + +'z' 40-7F CAN bus card conflict! + +'z' 10-4F drivers/s390/crypto/zcrypt_api.h conflict! +'|' 00-7F linux/media.h +0x80 00-1F linux/fb.h +0x89 00-06 arch/x86/include/asm/sockios.h +0x89 0B-DF linux/sockios.h +0x89 E0-EF linux/sockios.h SIOCPROTOPRIVATE range +0x89 E0-EF linux/dn.h PROTOPRIVATE range +0x89 F0-FF linux/sockios.h SIOCDEVPRIVATE range +0x8B all linux/wireless.h +0x8C 00-3F WiNRADiO driver + +0x90 00 drivers/cdrom/sbpcd.h +0x92 00-0F drivers/usb/mon/mon_bin.c +0x93 60-7F linux/auto_fs.h +0x94 all fs/btrfs/ioctl.h Btrfs filesystem + and linux/fs.h some lifted to vfs/generic +0x97 00-7F fs/ceph/ioctl.h Ceph file system +0x99 00-0F 537-Addinboard driver + +0xA0 all linux/sdp/sdp.h Industrial Device Project + +0xA1 0 linux/vtpm_proxy.h TPM Emulator Proxy Driver +0xA3 80-8F Port ACL in development: + +0xA3 90-9F linux/dtlk.h +0xA4 00-1F uapi/linux/tee.h Generic TEE subsystem +0xAA 00-3F linux/uapi/linux/userfaultfd.h +0xAB 00-1F linux/nbd.h +0xAC 00-1F linux/raw.h +0xAD 00 Netfilter device in development: + +0xAE all linux/kvm.h Kernel-based Virtual Machine + +0xAF 00-1F linux/fsl_hypervisor.h Freescale hypervisor +0xB0 all RATIO devices in development: + +0xB1 00-1F PPPoX + +0xB3 00 linux/mmc/ioctl.h +0xB4 00-0F linux/gpio.h +0xB5 00-0F uapi/linux/rpmsg.h +0xB6 all linux/fpga-dfl.h +0xC0 00-0F linux/usb/iowarrior.h +0xCA 00-0F uapi/misc/cxl.h +0xCA 10-2F uapi/misc/ocxl.h +0xCA 80-BF uapi/scsi/cxlflash_ioctl.h +0xCB 00-1F CBM serial IEC bus in development: + +0xCC 00-0F drivers/misc/ibmvmc.h pseries VMC driver +0xCD 01 linux/reiserfs_fs.h +0xCF 02 fs/cifs/ioctl.c +0xDB 00-0F drivers/char/mwave/mwavepub.h +0xDD 00-3F ZFCP device driver see drivers/s390/scsi/ + +0xE5 00-3F linux/fuse.h +0xEC 00-01 drivers/platform/chrome/cros_ec_dev.h ChromeOS EC driver +0xF3 00-3F drivers/usb/misc/sisusbvga/sisusb.h sisfb (in development) + +0xF4 00-1F video/mbxfb.h mbxfb + +0xF6 all LTTng Linux Trace Toolkit Next Generation + +0xFD all linux/dm-ioctl.h +==== ===== ======================================================= ================================================================ diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt deleted file mode 100644 index c9558146ac58..000000000000 --- a/Documentation/ioctl/ioctl-number.txt +++ /dev/null @@ -1,350 +0,0 @@ -Ioctl Numbers -19 October 1999 -Michael Elizabeth Chastain - - -If you are adding new ioctl's to the kernel, you should use the _IO -macros defined in : - - _IO an ioctl with no parameters - _IOW an ioctl with write parameters (copy_from_user) - _IOR an ioctl with read parameters (copy_to_user) - _IOWR an ioctl with both write and read parameters. - -'Write' and 'read' are from the user's point of view, just like the -system calls 'write' and 'read'. For example, a SET_FOO ioctl would -be _IOW, although the kernel would actually read data from user space; -a GET_FOO ioctl would be _IOR, although the kernel would actually write -data to user space. - -The first argument to _IO, _IOW, _IOR, or _IOWR is an identifying letter -or number from the table below. Because of the large number of drivers, -many drivers share a partial letter with other drivers. - -If you are writing a driver for a new device and need a letter, pick an -unused block with enough room for expansion: 32 to 256 ioctl commands. -You can register the block by patching this file and submitting the -patch to Linus Torvalds. Or you can e-mail me at and -I'll register one for you. - -The second argument to _IO, _IOW, _IOR, or _IOWR is a sequence number -to distinguish ioctls from each other. The third argument to _IOW, -_IOR, or _IOWR is the type of the data going into the kernel or coming -out of the kernel (e.g. 'int' or 'struct foo'). NOTE! Do NOT use -sizeof(arg) as the third argument as this results in your ioctl thinking -it passes an argument of type size_t. - -Some devices use their major number as the identifier; this is OK, as -long as it is unique. Some devices are irregular and don't follow any -convention at all. - -Following this convention is good because: - -(1) Keeping the ioctl's globally unique helps error checking: - if a program calls an ioctl on the wrong device, it will get an - error rather than some unexpected behaviour. - -(2) The 'strace' build procedure automatically finds ioctl numbers - defined with _IO, _IOW, _IOR, or _IOWR. - -(3) 'strace' can decode numbers back into useful names when the - numbers are unique. - -(4) People looking for ioctls can grep for them more easily when - this convention is used to define the ioctl numbers. - -(5) When following the convention, the driver code can use generic - code to copy the parameters between user and kernel space. - -This table lists ioctls visible from user land for Linux/x86. It contains -most drivers up to 2.6.31, but I know I am missing some. There has been -no attempt to list non-X86 architectures or ioctls from drivers/staging/. - -Code Seq#(hex) Include File Comments -======================================================== -0x00 00-1F linux/fs.h conflict! -0x00 00-1F scsi/scsi_ioctl.h conflict! -0x00 00-1F linux/fb.h conflict! -0x00 00-1F linux/wavefront.h conflict! -0x02 all linux/fd.h -0x03 all linux/hdreg.h -0x04 D2-DC linux/umsdos_fs.h Dead since 2.6.11, but don't reuse these. -0x06 all linux/lp.h -0x09 all linux/raid/md_u.h -0x10 00-0F drivers/char/s390/vmcp.h -0x10 10-1F arch/s390/include/uapi/sclp_ctl.h -0x10 20-2F arch/s390/include/uapi/asm/hypfs.h -0x12 all linux/fs.h - linux/blkpg.h -0x1b all InfiniBand Subsystem -0x20 all drivers/cdrom/cm206.h -0x22 all scsi/sg.h -'!' 00-1F uapi/linux/seccomp.h -'#' 00-3F IEEE 1394 Subsystem Block for the entire subsystem -'$' 00-0F linux/perf_counter.h, linux/perf_event.h -'%' 00-0F include/uapi/linux/stm.h - System Trace Module subsystem - -'&' 00-07 drivers/firewire/nosy-user.h -'1' 00-1F PPS kit from Ulrich Windl - -'2' 01-04 linux/i2o.h -'3' 00-0F drivers/s390/char/raw3270.h conflict! -'3' 00-1F linux/suspend_ioctls.h conflict! - and kernel/power/user.c -'8' all SNP8023 advanced NIC card - -';' 64-7F linux/vfio.h -'@' 00-0F linux/radeonfb.h conflict! -'@' 00-0F drivers/video/aty/aty128fb.c conflict! -'A' 00-1F linux/apm_bios.h conflict! -'A' 00-0F linux/agpgart.h conflict! - and drivers/char/agp/compat_ioctl.h -'A' 00-7F sound/asound.h conflict! -'B' 00-1F linux/cciss_ioctl.h conflict! -'B' 00-0F include/linux/pmu.h conflict! -'B' C0-FF advanced bbus - -'C' all linux/soundcard.h conflict! -'C' 01-2F linux/capi.h conflict! -'C' F0-FF drivers/net/wan/cosa.h conflict! -'D' all arch/s390/include/asm/dasd.h -'D' 40-5F drivers/scsi/dpt/dtpi_ioctl.h -'D' 05 drivers/scsi/pmcraid.h -'E' all linux/input.h conflict! -'E' 00-0F xen/evtchn.h conflict! -'F' all linux/fb.h conflict! -'F' 01-02 drivers/scsi/pmcraid.h conflict! -'F' 20 drivers/video/fsl-diu-fb.h conflict! -'F' 20 drivers/video/intelfb/intelfb.h conflict! -'F' 20 linux/ivtvfb.h conflict! -'F' 20 linux/matroxfb.h conflict! -'F' 20 drivers/video/aty/atyfb_base.c conflict! -'F' 00-0F video/da8xx-fb.h conflict! -'F' 80-8F linux/arcfb.h conflict! -'F' DD video/sstfb.h conflict! -'G' 00-3F drivers/misc/sgi-gru/grulib.h conflict! -'G' 00-0F linux/gigaset_dev.h conflict! -'H' 00-7F linux/hiddev.h conflict! -'H' 00-0F linux/hidraw.h conflict! -'H' 01 linux/mei.h conflict! -'H' 02 linux/mei.h conflict! -'H' 03 linux/mei.h conflict! -'H' 00-0F sound/asound.h conflict! -'H' 20-40 sound/asound_fm.h conflict! -'H' 80-8F sound/sfnt_info.h conflict! -'H' 10-8F sound/emu10k1.h conflict! -'H' 10-1F sound/sb16_csp.h conflict! -'H' 10-1F sound/hda_hwdep.h conflict! -'H' 40-4F sound/hdspm.h conflict! -'H' 40-4F sound/hdsp.h conflict! -'H' 90 sound/usb/usx2y/usb_stream.h -'H' A0 uapi/linux/usb/cdc-wdm.h -'H' C0-F0 net/bluetooth/hci.h conflict! -'H' C0-DF net/bluetooth/hidp/hidp.h conflict! -'H' C0-DF net/bluetooth/cmtp/cmtp.h conflict! -'H' C0-DF net/bluetooth/bnep/bnep.h conflict! -'H' F1 linux/hid-roccat.h -'H' F8-FA sound/firewire.h -'I' all linux/isdn.h conflict! -'I' 00-0F drivers/isdn/divert/isdn_divert.h conflict! -'I' 40-4F linux/mISDNif.h conflict! -'J' 00-1F drivers/scsi/gdth_ioctl.h -'K' all linux/kd.h -'L' 00-1F linux/loop.h conflict! -'L' 10-1F drivers/scsi/mpt3sas/mpt3sas_ctl.h conflict! -'L' 20-2F linux/lightnvm.h -'L' E0-FF linux/ppdd.h encrypted disk device driver - -'M' all linux/soundcard.h conflict! -'M' 01-16 mtd/mtd-abi.h conflict! - and drivers/mtd/mtdchar.c -'M' 01-03 drivers/scsi/megaraid/megaraid_sas.h -'M' 00-0F drivers/video/fsl-diu-fb.h conflict! -'N' 00-1F drivers/usb/scanner.h -'N' 40-7F drivers/block/nvme.c -'O' 00-06 mtd/ubi-user.h UBI -'P' all linux/soundcard.h conflict! -'P' 60-6F sound/sscape_ioctl.h conflict! -'P' 00-0F drivers/usb/class/usblp.c conflict! -'P' 01-09 drivers/misc/pci_endpoint_test.c conflict! -'Q' all linux/soundcard.h -'R' 00-1F linux/random.h conflict! -'R' 01 linux/rfkill.h conflict! -'R' C0-DF net/bluetooth/rfcomm.h -'S' all linux/cdrom.h conflict! -'S' 80-81 scsi/scsi_ioctl.h conflict! -'S' 82-FF scsi/scsi.h conflict! -'S' 00-7F sound/asequencer.h conflict! -'T' all linux/soundcard.h conflict! -'T' 00-AF sound/asound.h conflict! -'T' all arch/x86/include/asm/ioctls.h conflict! -'T' C0-DF linux/if_tun.h conflict! -'U' all sound/asound.h conflict! -'U' 00-CF linux/uinput.h conflict! -'U' 00-EF linux/usbdevice_fs.h -'U' C0-CF drivers/bluetooth/hci_uart.h -'V' all linux/vt.h conflict! -'V' all linux/videodev2.h conflict! -'V' C0 linux/ivtvfb.h conflict! -'V' C0 linux/ivtv.h conflict! -'V' C0 media/davinci/vpfe_capture.h conflict! -'V' C0 media/si4713.h conflict! -'W' 00-1F linux/watchdog.h conflict! -'W' 00-1F linux/wanrouter.h conflict! (pre 3.9) -'W' 00-3F sound/asound.h conflict! -'W' 40-5F drivers/pci/switch/switchtec.c -'X' all fs/xfs/xfs_fs.h conflict! - and fs/xfs/linux-2.6/xfs_ioctl32.h - and include/linux/falloc.h - and linux/fs.h -'X' all fs/ocfs2/ocfs_fs.h conflict! -'X' 01 linux/pktcdvd.h conflict! -'Y' all linux/cyclades.h -'Z' 14-15 drivers/message/fusion/mptctl.h -'[' 00-3F linux/usb/tmc.h USB Test and Measurement Devices - -'a' all linux/atm*.h, linux/sonet.h ATM on linux - -'a' 00-0F drivers/crypto/qat/qat_common/adf_cfg_common.h conflict! qat driver -'b' 00-FF conflict! bit3 vme host bridge - -'c' all linux/cm4000_cs.h conflict! -'c' 00-7F linux/comstats.h conflict! -'c' 00-7F linux/coda.h conflict! -'c' 00-1F linux/chio.h conflict! -'c' 80-9F arch/s390/include/asm/chsc.h conflict! -'c' A0-AF arch/x86/include/asm/msr.h conflict! -'d' 00-FF linux/char/drm/drm.h conflict! -'d' 02-40 pcmcia/ds.h conflict! -'d' F0-FF linux/digi1.h -'e' all linux/digi1.h conflict! -'f' 00-1F linux/ext2_fs.h conflict! -'f' 00-1F linux/ext3_fs.h conflict! -'f' 00-0F fs/jfs/jfs_dinode.h conflict! -'f' 00-0F fs/ext4/ext4.h conflict! -'f' 00-0F linux/fs.h conflict! -'f' 00-0F fs/ocfs2/ocfs2_fs.h conflict! -'g' 00-0F linux/usb/gadgetfs.h -'g' 20-2F linux/usb/g_printer.h -'h' 00-7F conflict! Charon filesystem - -'h' 00-1F linux/hpet.h conflict! -'h' 80-8F fs/hfsplus/ioctl.c -'i' 00-3F linux/i2o-dev.h conflict! -'i' 0B-1F linux/ipmi.h conflict! -'i' 80-8F linux/i8k.h -'j' 00-3F linux/joystick.h -'k' 00-0F linux/spi/spidev.h conflict! -'k' 00-05 video/kyro.h conflict! -'k' 10-17 linux/hsi/hsi_char.h HSI character device -'l' 00-3F linux/tcfs_fs.h transparent cryptographic file system - -'l' 40-7F linux/udf_fs_i.h in development: - -'m' 00-09 linux/mmtimer.h conflict! -'m' all linux/mtio.h conflict! -'m' all linux/soundcard.h conflict! -'m' all linux/synclink.h conflict! -'m' 00-19 drivers/message/fusion/mptctl.h conflict! -'m' 00 drivers/scsi/megaraid/megaraid_ioctl.h conflict! -'n' 00-7F linux/ncp_fs.h and fs/ncpfs/ioctl.c -'n' 80-8F uapi/linux/nilfs2_api.h NILFS2 -'n' E0-FF linux/matroxfb.h matroxfb -'o' 00-1F fs/ocfs2/ocfs2_fs.h OCFS2 -'o' 00-03 mtd/ubi-user.h conflict! (OCFS2 and UBI overlaps) -'o' 40-41 mtd/ubi-user.h UBI -'o' 01-A1 linux/dvb/*.h DVB -'p' 00-0F linux/phantom.h conflict! (OpenHaptics needs this) -'p' 00-1F linux/rtc.h conflict! -'p' 00-3F linux/mc146818rtc.h conflict! -'p' 40-7F linux/nvram.h -'p' 80-9F linux/ppdev.h user-space parport - -'p' A1-A5 linux/pps.h LinuxPPS - -'q' 00-1F linux/serio.h -'q' 80-FF linux/telephony.h Internet PhoneJACK, Internet LineJACK - linux/ixjuser.h -'r' 00-1F linux/msdos_fs.h and fs/fat/dir.c -'s' all linux/cdk.h -'t' 00-7F linux/ppp-ioctl.h -'t' 80-8F linux/isdn_ppp.h -'t' 90-91 linux/toshiba.h toshiba and toshiba_acpi SMM -'u' 00-1F linux/smb_fs.h gone -'u' 20-3F linux/uvcvideo.h USB video class host driver -'u' 40-4f linux/udmabuf.h userspace dma-buf misc device -'v' 00-1F linux/ext2_fs.h conflict! -'v' 00-1F linux/fs.h conflict! -'v' 00-0F linux/sonypi.h conflict! -'v' 00-0F media/v4l2-subdev.h conflict! -'v' C0-FF linux/meye.h conflict! -'w' all CERN SCI driver -'y' 00-1F packet based user level communications - -'z' 00-3F CAN bus card conflict! - -'z' 40-7F CAN bus card conflict! - -'z' 10-4F drivers/s390/crypto/zcrypt_api.h conflict! -'|' 00-7F linux/media.h -0x80 00-1F linux/fb.h -0x89 00-06 arch/x86/include/asm/sockios.h -0x89 0B-DF linux/sockios.h -0x89 E0-EF linux/sockios.h SIOCPROTOPRIVATE range -0x89 E0-EF linux/dn.h PROTOPRIVATE range -0x89 F0-FF linux/sockios.h SIOCDEVPRIVATE range -0x8B all linux/wireless.h -0x8C 00-3F WiNRADiO driver - -0x90 00 drivers/cdrom/sbpcd.h -0x92 00-0F drivers/usb/mon/mon_bin.c -0x93 60-7F linux/auto_fs.h -0x94 all fs/btrfs/ioctl.h Btrfs filesystem - and linux/fs.h some lifted to vfs/generic -0x97 00-7F fs/ceph/ioctl.h Ceph file system -0x99 00-0F 537-Addinboard driver - -0xA0 all linux/sdp/sdp.h Industrial Device Project - -0xA1 0 linux/vtpm_proxy.h TPM Emulator Proxy Driver -0xA3 80-8F Port ACL in development: - -0xA3 90-9F linux/dtlk.h -0xA4 00-1F uapi/linux/tee.h Generic TEE subsystem -0xAA 00-3F linux/uapi/linux/userfaultfd.h -0xAB 00-1F linux/nbd.h -0xAC 00-1F linux/raw.h -0xAD 00 Netfilter device in development: - -0xAE all linux/kvm.h Kernel-based Virtual Machine - -0xAF 00-1F linux/fsl_hypervisor.h Freescale hypervisor -0xB0 all RATIO devices in development: - -0xB1 00-1F PPPoX -0xB3 00 linux/mmc/ioctl.h -0xB4 00-0F linux/gpio.h -0xB5 00-0F uapi/linux/rpmsg.h -0xB6 all linux/fpga-dfl.h -0xC0 00-0F linux/usb/iowarrior.h -0xCA 00-0F uapi/misc/cxl.h -0xCA 10-2F uapi/misc/ocxl.h -0xCA 80-BF uapi/scsi/cxlflash_ioctl.h -0xCB 00-1F CBM serial IEC bus in development: - -0xCC 00-0F drivers/misc/ibmvmc.h pseries VMC driver -0xCD 01 linux/reiserfs_fs.h -0xCF 02 fs/cifs/ioctl.c -0xDB 00-0F drivers/char/mwave/mwavepub.h -0xDD 00-3F ZFCP device driver see drivers/s390/scsi/ - -0xE5 00-3F linux/fuse.h -0xEC 00-01 drivers/platform/chrome/cros_ec_dev.h ChromeOS EC driver -0xF3 00-3F drivers/usb/misc/sisusbvga/sisusb.h sisfb (in development) - -0xF4 00-1F video/mbxfb.h mbxfb - -0xF6 all LTTng Linux Trace Toolkit Next Generation - -0xFD all linux/dm-ioctl.h diff --git a/Documentation/process/submit-checklist.rst b/Documentation/process/submit-checklist.rst index 365efc9e4aa8..8e56337d422d 100644 --- a/Documentation/process/submit-checklist.rst +++ b/Documentation/process/submit-checklist.rst @@ -107,7 +107,7 @@ and elsewhere regarding submitting Linux kernel patches. and why. 26) If any ioctl's are added by the patch, then also update - ``Documentation/ioctl/ioctl-number.txt``. + ``Documentation/ioctl/ioctl-number.rst``. 27) If your modified source code depends on or uses any of the kernel APIs or features that are related to the following ``Kconfig`` symbols, diff --git a/Documentation/translations/it_IT/process/submit-checklist.rst b/Documentation/translations/it_IT/process/submit-checklist.rst index ea74cae958d7..995ee69fab11 100644 --- a/Documentation/translations/it_IT/process/submit-checklist.rst +++ b/Documentation/translations/it_IT/process/submit-checklist.rst @@ -117,7 +117,7 @@ sottomissione delle patch, in particolare sorgenti che ne spieghi la logica: cosa fanno e perché. 25) Se la patch aggiunge nuove chiamate ioctl, allora aggiornate - ``Documentation/ioctl/ioctl-number.txt``. + ``Documentation/ioctl/ioctl-number.rst``. 26) Se il codice che avete modificato dipende o usa una qualsiasi interfaccia o funzionalità del kernel che è associata a uno dei seguenti simboli diff --git a/Documentation/translations/zh_CN/process/submit-checklist.rst b/Documentation/translations/zh_CN/process/submit-checklist.rst index f4785d2b0491..8738c55e42a2 100644 --- a/Documentation/translations/zh_CN/process/submit-checklist.rst +++ b/Documentation/translations/zh_CN/process/submit-checklist.rst @@ -97,7 +97,7 @@ Linux内核补丁提交清单 24) 所有内存屏障例如 ``barrier()``, ``rmb()``, ``wmb()`` 都需要源代码中的注 释来解释它们正在执行的操作及其原因的逻辑。 -25) 如果补丁添加了任何ioctl，那么也要更新 ``Documentation/ioctl/ioctl-number.txt`` +25) 如果补丁添加了任何ioctl，那么也要更新 ``Documentation/ioctl/ioctl-number.rst`` 26) 如果修改后的源代码依赖或使用与以下 ``Kconfig`` 符号相关的任何内核API或 功能，则在禁用相关 ``Kconfig`` 符号和/或 ``=m`` （如果该选项可用）的情况 diff --git a/include/uapi/rdma/rdma_user_ioctl_cmds.h b/include/uapi/rdma/rdma_user_ioctl_cmds.h index 06c34d99be85..ed93f22c4573 100644 --- a/include/uapi/rdma/rdma_user_ioctl_cmds.h +++ b/include/uapi/rdma/rdma_user_ioctl_cmds.h @@ -36,7 +36,7 @@ #include #include -/* Documentation/ioctl/ioctl-number.txt */ +/* Documentation/ioctl/ioctl-number.rst */ #define RDMA_IOCTL_MAGIC 0x1b #define RDMA_VERBS_IOCTL \ _IOWR(RDMA_IOCTL_MAGIC, 1, struct ib_uverbs_ioctl_hdr)