From patchwork Tue Jun 28 19:09:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Metzmacher X-Patchwork-Id: 12898798 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7995FC43334 for ; Tue, 28 Jun 2022 19:10:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235120AbiF1TKH (ORCPT ); Tue, 28 Jun 2022 15:10:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43254 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235307AbiF1TKD (ORCPT ); Tue, 28 Jun 2022 15:10:03 -0400 Received: from hr2.samba.org (hr2.samba.org [IPv6:2a01:4f8:192:486::2:0]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1ACE61A049; Tue, 28 Jun 2022 12:10:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=samba.org; s=42; h=Cc:From:To:Date:Message-ID; bh=jzYbi/j3D57gaWt0HxtaLJPk+sHrnWlq2sHekUsBRVk=; b=amkpGHn3VPVJJIurV1r/PTlvlZ 9oLWmSVsfLs2fzzbXn6RhEkRFYxNxnU4a+mKV+m99vmznOl2FlP1uKSdB54WPE+J89hu2wVjzfQFF KDsnWdDh4xyZRsKYktuk/u1y0uvELHq0MGQ/s72vAboXEHCJCSqCH3Xu3o+PhMO7YzMv6YTDJF7lE +4jl30rJAgmo2LSf7K4QNTmx3lwuXg2d6igBhr+bbon7+luq+gi3XHSnzEL7QSPbyDAv5xGxrn2IP iZI9Z0Rx/M6BrjHVYlmHTA+CsUIaNO0YXb3Qz6FXQ2z+lbtHdEXnqSitvHwBPDbWareUgxqbfIGVQ mkO8VSPl/fbJ5LBVPCHES5LKjcYuPNTb8m7ghpZH5uYwChMcpG1DFhvqVWHSQS5acRaQgZi1+4wIt c5f6Zhj1PAdyGd0sb+EEIQASngM7ZejL+mJBKExTonQhMemhUQZ3nxsr9Q4r/zLNjLJP/uVbFA0pp QFbV3OcPPM58S/gOpv8HIq8A; Received: from [127.0.0.2] (localhost [127.0.0.1]) by hr2.samba.org with esmtpsa (TLS1.3:ECDHE_SECP256R1__ECDSA_SECP256R1_SHA256__CHACHA20_POLY1305:256) (Exim) id 1o6Gb0-0029Pu-7l; Tue, 28 Jun 2022 19:09:58 +0000 Message-ID: Date: Tue, 28 Jun 2022 21:09:57 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.1 Content-Language: en-US To: Jens Axboe From: Stefan Metzmacher Cc: io-uring , "netdev@vger.kernel.org" Subject: For 5.20 or 5.19? net: wire up support for file_operations->uring_cmd() Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Hi Jens, I'm wondering what happened to you patch passing file_ops->uring_cmd() down to socket layers. It was part of you work in progress branches... The latest one I found was this: https://git.kernel.dk/cgit/linux-block/commit/?h=nvme-passthru-wip.2&id=28b71b85831f5dd303acae12cfdc89e5aaae442b And this one just having the generic parts were in a separate commit https://git.kernel.dk/cgit/linux-block/commit/?h=io_uring-fops.v7&id=c2ba3bd8940ef0b7d1c09adf4bed01acc8171407 vs. https://git.kernel.dk/cgit/linux-block/commit/?h=io_uring-fops.v7&id=542c38da58841097f97f710d1f05055c2f1039f0 I took this: https://git.kernel.dk/cgit/linux-block/commit/?h=io_uring-fops.v7&id=c2ba3bd8940ef0b7d1c09adf4bed01acc8171407 adapted it on top of v5.19-rc4 and removed stuff that was not really needed. Even if it's not used in tree, it would be good to have uring_cmd hooks in struct proto_ops and struct proto, so that out of tree socket implementations like my smbdirect driver are able to hook into it. What do you think? https://git.samba.org/?p=metze/linux/wip.git;a=commitdiff;h=7541d40a482a9f57d580ac05254c5a5982edff15 From 7541d40a482a9f57d580ac05254c5a5982edff15 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 18 Dec 2020 15:12:46 -0700 Subject: [PATCH] net: wire up support for file_operations->uring_cmd() Pass it through the proto_ops->uring_cmd() handler, so we can plumb it through all the way to the proto->uring_cmd() handler later as required. Signed-off-by: Jens Axboe Signed-off-by: Stefan Metzmacher --- include/linux/net.h | 4 ++++ include/net/sock.h | 7 +++++++ net/core/sock.c | 12 ++++++++++++ net/socket.c | 13 +++++++++++++ 4 files changed, 36 insertions(+) diff --git a/include/linux/net.h b/include/linux/net.h index 12093f4db50c..59d37aade979 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -31,6 +31,7 @@ struct pipe_inode_info; struct inode; struct file; struct net; +struct io_uring_cmd; /* Historically, SOCKWQ_ASYNC_NOSPACE & SOCKWQ_ASYNC_WAITDATA were located * in sock->flags, but moved into sk->sk_wq->flags to be RCU protected. @@ -178,6 +179,9 @@ struct proto_ops { int (*compat_ioctl) (struct socket *sock, unsigned int cmd, unsigned long arg); #endif + int (*uring_cmd)(struct socket *sock, + struct io_uring_cmd *ioucmd, + unsigned issue_flags); int (*gettstamp) (struct socket *sock, void __user *userstamp, bool timeval, bool time32); int (*listen) (struct socket *sock, int len); diff --git a/include/net/sock.h b/include/net/sock.h index 72ca97ccb460..80fd3f45cd09 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -111,6 +111,7 @@ typedef struct { struct sock; struct proto; struct net; +struct io_uring_cmd; typedef __u32 __bitwise __portpair; typedef __u64 __bitwise __addrpair; @@ -1181,6 +1182,9 @@ struct proto { int (*ioctl)(struct sock *sk, int cmd, unsigned long arg); + int (*uring_cmd)(struct sock *sk, + struct io_uring_cmd *ioucmd, + unsigned int issue_flags); int (*init)(struct sock *sk); void (*destroy)(struct sock *sk); void (*shutdown)(struct sock *sk, int how); @@ -1886,6 +1890,9 @@ int sock_common_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, int sock_common_setsockopt(struct socket *sock, int level, int optname, sockptr_t optval, unsigned int optlen); +int sock_common_uring_cmd(struct socket *sock, struct io_uring_cmd *ioucmd, + unsigned int issue_flags); + void sk_common_release(struct sock *sk); /* diff --git a/net/core/sock.c b/net/core/sock.c index 2ff40dd0a7a6..42b3def01a5f 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -3582,6 +3582,18 @@ int sock_common_setsockopt(struct socket *sock, int level, int optname, } EXPORT_SYMBOL(sock_common_setsockopt); +int sock_common_uring_cmd(struct socket *sock, struct io_uring_cmd *ioucmd, + unsigned int issue_flags) +{ + struct sock *sk = sock->sk; + + if (!sk->sk_prot->uring_cmd) + return -EOPNOTSUPP; + + return sk->sk_prot->uring_cmd(sk, ioucmd, issue_flags); +} +EXPORT_SYMBOL(sock_common_uring_cmd); + void sk_common_release(struct sock *sk) { if (sk->sk_prot->destroy) diff --git a/net/socket.c b/net/socket.c index 2bc8773d9dc5..67701c685921 100644 --- a/net/socket.c +++ b/net/socket.c @@ -87,6 +87,7 @@ #include #include #include +#include #include #include @@ -115,6 +116,7 @@ unsigned int sysctl_net_busy_poll __read_mostly; static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to); static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from); static int sock_mmap(struct file *file, struct vm_area_struct *vma); +static int sock_uring_cmd(struct io_uring_cmd *ioucmd, unsigned int issue_flags); static int sock_close(struct inode *inode, struct file *file); static __poll_t sock_poll(struct file *file, @@ -158,6 +160,7 @@ static const struct file_operations socket_file_ops = { #ifdef CONFIG_COMPAT .compat_ioctl = compat_sock_ioctl, #endif + .uring_cmd = sock_uring_cmd, .mmap = sock_mmap, .release = sock_close, .fasync = sock_fasync, @@ -1289,6 +1292,16 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg) return err; } +static int sock_uring_cmd(struct io_uring_cmd *ioucmd, unsigned int issue_flags) +{ + struct socket *sock = ioucmd->file->private_data; + + if (!sock->ops->uring_cmd) + return -EOPNOTSUPP; + + return sock->ops->uring_cmd(sock, ioucmd, issue_flags); +} + /** * sock_create_lite - creates a socket * @family: protocol family (AF_INET, ...)