From patchwork Fri Dec 1 00:57:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 13475253 X-Patchwork-Delegate: paul@paul-moore.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Cl+8NYKW" Received: from mail-lj1-x231.google.com (mail-lj1-x231.google.com [IPv6:2a00:1450:4864:20::231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 05C201721; Thu, 30 Nov 2023 16:59:31 -0800 (PST) Received: by mail-lj1-x231.google.com with SMTP id 38308e7fff4ca-2c9d1b07e79so13098431fa.1; Thu, 30 Nov 2023 16:59:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701392369; x=1701997169; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=0TuGV0ifQMGZnom21HAA9kziS07rsoo1KgAQCU1PjLY=; b=Cl+8NYKWpsBfrlb3OOP6FU2ffqIm9ApRk5yZbxJWdCCDpf3L+Xydj0M522iHPb22UU nif0n85IosTV+lK9/kTvwCzlaMFvaZJ058o3YURsaWZJlXdSCq5tAZss1EYGS2qd0kfu He3lm6zyRtLjJSVBI+6yiEgi8+nAsfS2e1HDmzxh4CdPnJBDx69bwjG8f8hjM8NSXNIE /+E8LRUOI0dh/2D9WuhJS9j/gX+mXVMW6Mazm0NKWNJvQRVFJY9w5s0T/SzZjw8dWy/M Qb2abOXoAvHsYBK282oe0PcW7ZBa9C97CU9tZYNjBy5wCPjrlsJsaGf8SG6pRL92zvoT b1ew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701392369; x=1701997169; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=0TuGV0ifQMGZnom21HAA9kziS07rsoo1KgAQCU1PjLY=; b=VT101o66i0l7C/PK+0Vz12VYeGzFMC5ZQozZZCLH+lMtCPBDlIjDW5HyTWIGOXQl71 xFVqUwYexcDkqWjDK3Ehrhg9v1we4TwsYqtQKsZ2X+1ah6c8C3KbekQpqGjBf2bhec79 wevTL4AXDBX7DwWDBXJkghrdBrccwclpdHpjISFuCNJ++I5IGvk06VPjt4B/WkTMWJvI gx7FEzNxwPUgojelTQr+QTv3D8Fds3jVHukShzHQ99sYHtiPMIKH3z8hQbr7On7+C/pm 2057xh46ikhk/4Af7qIRZsFE6rj4L+y8avvQbQybDy19Jw2X647XLMxzxqomUEW9h0EU ZtzA== X-Gm-Message-State: AOJu0Yy/U9+8ZSSbpNIHrgosJAVCmjuPeTqyP3G3J1GOaHAX03pL2nx3 tUUoEoKaIi93qbeGcmejqvNQLoQwm60= X-Google-Smtp-Source: AGHT+IHZ/QIUNeOY86P9qJNJREbcGY2Fr7epDL+dBcN7m+cI5VoIXcGg7cnHIC5D5yBjxW17Y2X9GA== X-Received: by 2002:a05:651c:14d:b0:2c9:bc5d:1a14 with SMTP id c13-20020a05651c014d00b002c9bc5d1a14mr225339ljd.27.1701392368655; Thu, 30 Nov 2023 16:59:28 -0800 (PST) Received: from 127.0.0.1localhost ([185.69.145.191]) by smtp.gmail.com with ESMTPSA id ks19-20020a170906f85300b00a11b2677acbsm1250511ejb.163.2023.11.30.16.59.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Nov 2023 16:59:27 -0800 (PST) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: Jens Axboe , asml.silence@gmail.com, linux-block@vger.kernel.org, ming.lei@redhat.com, joshi.k@samsung.com, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, Paul Moore Subject: [PATCH v2 1/3] io_uring: split out cmd api into a separate header Date: Fri, 1 Dec 2023 00:57:35 +0000 Message-ID: <7ec50bae6e21f371d3850796e716917fc141225a.1701391955.git.asml.silence@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: selinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 linux/io_uring.h is slowly becoming a rubbish bin where we put anything exposed to other subsystems. For instance, the task exit hooks and io_uring cmd infra are completely orthogonal and don't need each other's definitions. Start cleaning it up by splitting out all command bits into a new header file. Signed-off-by: Pavel Begunkov Reviewed-by: Ming Lei --- MAINTAINERS | 1 + drivers/block/ublk_drv.c | 2 +- drivers/nvme/host/ioctl.c | 2 +- include/linux/io_uring.h | 89 +--------------------------------- include/linux/io_uring/cmd.h | 81 +++++++++++++++++++++++++++++++ include/linux/io_uring_types.h | 20 ++++++++ io_uring/io_uring.c | 1 + io_uring/rw.c | 2 +- io_uring/uring_cmd.c | 2 +- security/selinux/hooks.c | 2 +- security/smack/smack_lsm.c | 2 +- 11 files changed, 110 insertions(+), 94 deletions(-) create mode 100644 include/linux/io_uring/cmd.h diff --git a/MAINTAINERS b/MAINTAINERS index 97f51d5ec1cf..eaa3d8a2490b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11157,6 +11157,7 @@ L: io-uring@vger.kernel.org S: Maintained T: git git://git.kernel.dk/linux-block T: git git://git.kernel.dk/liburing +F: include/linux/io_uring/ F: include/linux/io_uring.h F: include/linux/io_uring_types.h F: include/trace/events/io_uring.h diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index 83600b45e12a..909377068a87 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -36,7 +36,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c index 529b9954d2b8..6864a6eeee93 100644 --- a/drivers/nvme/host/ioctl.c +++ b/drivers/nvme/host/ioctl.c @@ -5,7 +5,7 @@ */ #include /* for force_successful_syscall_return */ #include -#include +#include #include "nvme.h" enum { diff --git a/include/linux/io_uring.h b/include/linux/io_uring.h index aefb73eeeebf..d8fc93492dc5 100644 --- a/include/linux/io_uring.h +++ b/include/linux/io_uring.h @@ -6,71 +6,13 @@ #include #include -enum io_uring_cmd_flags { - IO_URING_F_COMPLETE_DEFER = 1, - IO_URING_F_UNLOCKED = 2, - /* the request is executed from poll, it should not be freed */ - IO_URING_F_MULTISHOT = 4, - /* executed by io-wq */ - IO_URING_F_IOWQ = 8, - /* int's last bit, sign checks are usually faster than a bit test */ - IO_URING_F_NONBLOCK = INT_MIN, - - /* ctx state flags, for URING_CMD */ - IO_URING_F_SQE128 = (1 << 8), - IO_URING_F_CQE32 = (1 << 9), - IO_URING_F_IOPOLL = (1 << 10), - - /* set when uring wants to cancel a previously issued command */ - IO_URING_F_CANCEL = (1 << 11), - IO_URING_F_COMPAT = (1 << 12), -}; - -/* only top 8 bits of sqe->uring_cmd_flags for kernel internal use */ -#define IORING_URING_CMD_CANCELABLE (1U << 30) -#define IORING_URING_CMD_POLLED (1U << 31) - -struct io_uring_cmd { - struct file *file; - const struct io_uring_sqe *sqe; - union { - /* callback to defer completions to task context */ - void (*task_work_cb)(struct io_uring_cmd *cmd, unsigned); - /* used for polled completion */ - void *cookie; - }; - u32 cmd_op; - u32 flags; - u8 pdu[32]; /* available inline for free use */ -}; - -static inline const void *io_uring_sqe_cmd(const struct io_uring_sqe *sqe) -{ - return sqe->cmd; -} - #if defined(CONFIG_IO_URING) -int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, - struct iov_iter *iter, void *ioucmd); -void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, ssize_t res2, - unsigned issue_flags); struct sock *io_uring_get_socket(struct file *file); void __io_uring_cancel(bool cancel_all); void __io_uring_free(struct task_struct *tsk); void io_uring_unreg_ringfd(void); const char *io_uring_get_opcode(u8 opcode); -void __io_uring_cmd_do_in_task(struct io_uring_cmd *ioucmd, - void (*task_work_cb)(struct io_uring_cmd *, unsigned), - unsigned flags); -/* users should follow semantics of IOU_F_TWQ_LAZY_WAKE */ -void io_uring_cmd_do_in_task_lazy(struct io_uring_cmd *ioucmd, - void (*task_work_cb)(struct io_uring_cmd *, unsigned)); - -static inline void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, - void (*task_work_cb)(struct io_uring_cmd *, unsigned)) -{ - __io_uring_cmd_do_in_task(ioucmd, task_work_cb, 0); -} +int io_uring_cmd_sock(struct io_uring_cmd *cmd, unsigned int issue_flags); static inline void io_uring_files_cancel(void) { @@ -89,28 +31,7 @@ static inline void io_uring_free(struct task_struct *tsk) if (tsk->io_uring) __io_uring_free(tsk); } -int io_uring_cmd_sock(struct io_uring_cmd *cmd, unsigned int issue_flags); -void io_uring_cmd_mark_cancelable(struct io_uring_cmd *cmd, - unsigned int issue_flags); -struct task_struct *io_uring_cmd_get_task(struct io_uring_cmd *cmd); #else -static inline int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, - struct iov_iter *iter, void *ioucmd) -{ - return -EOPNOTSUPP; -} -static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, - ssize_t ret2, unsigned issue_flags) -{ -} -static inline void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, - void (*task_work_cb)(struct io_uring_cmd *, unsigned)) -{ -} -static inline void io_uring_cmd_do_in_task_lazy(struct io_uring_cmd *ioucmd, - void (*task_work_cb)(struct io_uring_cmd *, unsigned)) -{ -} static inline struct sock *io_uring_get_socket(struct file *file) { return NULL; @@ -133,14 +54,6 @@ static inline int io_uring_cmd_sock(struct io_uring_cmd *cmd, { return -EOPNOTSUPP; } -static inline void io_uring_cmd_mark_cancelable(struct io_uring_cmd *cmd, - unsigned int issue_flags) -{ -} -static inline struct task_struct *io_uring_cmd_get_task(struct io_uring_cmd *cmd) -{ - return NULL; -} #endif #endif diff --git a/include/linux/io_uring/cmd.h b/include/linux/io_uring/cmd.h new file mode 100644 index 000000000000..62fcfaf6fcc9 --- /dev/null +++ b/include/linux/io_uring/cmd.h @@ -0,0 +1,81 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _LINUX_IO_URING_CMD_H +#define _LINUX_IO_URING_CMD_H + +#include +#include + +/* only top 8 bits of sqe->uring_cmd_flags for kernel internal use */ +#define IORING_URING_CMD_CANCELABLE (1U << 30) +#define IORING_URING_CMD_POLLED (1U << 31) + +struct io_uring_cmd { + struct file *file; + const struct io_uring_sqe *sqe; + union { + /* callback to defer completions to task context */ + void (*task_work_cb)(struct io_uring_cmd *cmd, unsigned); + /* used for polled completion */ + void *cookie; + }; + u32 cmd_op; + u32 flags; + u8 pdu[32]; /* available inline for free use */ +}; + +static inline const void *io_uring_sqe_cmd(const struct io_uring_sqe *sqe) +{ + return sqe->cmd; +} + +#if defined(CONFIG_IO_URING) +int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, + struct iov_iter *iter, void *ioucmd); +void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, ssize_t res2, + unsigned issue_flags); +void __io_uring_cmd_do_in_task(struct io_uring_cmd *ioucmd, + void (*task_work_cb)(struct io_uring_cmd *, unsigned), + unsigned flags); +/* users should follow semantics of IOU_F_TWQ_LAZY_WAKE */ +void io_uring_cmd_do_in_task_lazy(struct io_uring_cmd *ioucmd, + void (*task_work_cb)(struct io_uring_cmd *, unsigned)); + +static inline void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, + void (*task_work_cb)(struct io_uring_cmd *, unsigned)) +{ + __io_uring_cmd_do_in_task(ioucmd, task_work_cb, 0); +} + +void io_uring_cmd_mark_cancelable(struct io_uring_cmd *cmd, + unsigned int issue_flags); +struct task_struct *io_uring_cmd_get_task(struct io_uring_cmd *cmd); + +#else +static inline int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, + struct iov_iter *iter, void *ioucmd) +{ + return -EOPNOTSUPP; +} +static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, + ssize_t ret2, unsigned issue_flags) +{ +} +static inline void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, + void (*task_work_cb)(struct io_uring_cmd *, unsigned)) +{ +} +static inline void io_uring_cmd_do_in_task_lazy(struct io_uring_cmd *ioucmd, + void (*task_work_cb)(struct io_uring_cmd *, unsigned)) +{ +} +static inline void io_uring_cmd_mark_cancelable(struct io_uring_cmd *cmd, + unsigned int issue_flags) +{ +} +static inline struct task_struct *io_uring_cmd_get_task(struct io_uring_cmd *cmd) +{ + return NULL; +} +#endif + +#endif /* _LINUX_IO_URING_CMD_H */ diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h index d3009d56af0b..0bcecb734af3 100644 --- a/include/linux/io_uring_types.h +++ b/include/linux/io_uring_types.h @@ -7,6 +7,26 @@ #include #include +enum io_uring_cmd_flags { + IO_URING_F_COMPLETE_DEFER = 1, + IO_URING_F_UNLOCKED = 2, + /* the request is executed from poll, it should not be freed */ + IO_URING_F_MULTISHOT = 4, + /* executed by io-wq */ + IO_URING_F_IOWQ = 8, + /* int's last bit, sign checks are usually faster than a bit test */ + IO_URING_F_NONBLOCK = INT_MIN, + + /* ctx state flags, for URING_CMD */ + IO_URING_F_SQE128 = (1 << 8), + IO_URING_F_CQE32 = (1 << 9), + IO_URING_F_IOPOLL = (1 << 10), + + /* set when uring wants to cancel a previously issued command */ + IO_URING_F_CANCEL = (1 << 11), + IO_URING_F_COMPAT = (1 << 12), +}; + struct io_wq_work_node { struct io_wq_work_node *next; }; diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index ed254076c723..6ffd7216393b 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -70,6 +70,7 @@ #include #include #include +#include #include #include #include diff --git a/io_uring/rw.c b/io_uring/rw.c index 64390d4e20c1..4943d683508b 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -10,7 +10,7 @@ #include #include #include -#include +#include #include diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c index acbc2924ecd2..4ed0c66e3aae 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -2,7 +2,7 @@ #include #include #include -#include +#include #include #include diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index feda711c6b7b..17ec5e109aec 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -91,7 +91,7 @@ #include #include #include -#include +#include #include "avc.h" #include "objsec.h" diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 65130a791f57..2cdaa46088a0 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -42,7 +42,7 @@ #include #include #include -#include +#include #include "smack.h" #define TRANS_TRUE "TRUE"