From mboxrd@z Thu Jan 1 00:00:00 1970 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 2758BC43217 for ; Tue, 30 Nov 2021 15:21:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239101AbhK3PYR (ORCPT ); Tue, 30 Nov 2021 10:24:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38592 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245057AbhK3PX1 (ORCPT ); Tue, 30 Nov 2021 10:23:27 -0500 Received: from mail-wr1-x429.google.com (mail-wr1-x429.google.com [IPv6:2a00:1450:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BEAE2C061377; Tue, 30 Nov 2021 07:19:21 -0800 (PST) Received: by mail-wr1-x429.google.com with SMTP id a18so45274846wrn.6; Tue, 30 Nov 2021 07:19:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=fdsU4+l5aV4bfwBaRNCuzeM5yPixDPv1W50l5HuSAKc=; b=OloQfj21d5fcemkHQqmCStGgD1ISw8htjoVPBnbhsDeL//2i/uZXlNTRV8Mo8F+oEj ZMqLtHxgM7nqh8MdZSJOR6AI47qAoiNPMQOBnU6Ii5Jj/cng5hJwhW6S6vKUXbjn5FQI H5ZUcRNMpjORrIHn2YQWuTpxdR8arcIEJGEYgccxbkIDoN2qZKw8jY+tMBsnGP6GTnnf iyYW+z0t2A20E5XDxcNPqdUMz57fm5jEwnM8EtQjZ+rDV3MDD8rHKoJuB6fc15FNBtgY SGDMOggu1v2NLZcZSdDAd+d+ziK4zQCEcjajJ57I13wmo1Q9Csq/wjET8jnUdPMxXGxy YzOQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=fdsU4+l5aV4bfwBaRNCuzeM5yPixDPv1W50l5HuSAKc=; b=JSAdOGau8p+S0p4jsuNdVxe2sTNOh1C3uU1norgvz8CZzjvHGkxc8bnY+JfPTBboC4 qwUQuQTARDOKJHCSjTb51MbKrFQIBD445k3GwQTert9/Gfw1yPQTAehJrHsMVs8HVNYi JpON8Kv7XA3Etf8eiCzujwkKYeS+7UaocMkgPVSxxshThLWjNz6vYrvjuioX3283QFMt ZzdC22oqol5V1Fhzd469sAkLb/eoB2vAy2vX87wCJhO97zp2Knfst8Cyt6yfTRbSeYg7 GAf6GttF0TsBCtrlrHQr43wYYD54LRqAvWQUNHr9gGYSBIuzbWFQl2uL0/vpbmjB8Yv0 JQ+w== X-Gm-Message-State: AOAM530nhUHFWA0rpRNm06Ki5AIIb9R53ahF7ZzV34JI6oDXH1pEHtyS ClGaV5WBGcoJJE7J1fp/mNwsZu+Rn2w= X-Google-Smtp-Source: ABdhPJzhc1IZ2bs05HmTBtQaH6UqcJmg3N4P5psLtX3rmAaT4Wt+VOypwhmBeKF9ev5gdZaFEhotYw== X-Received: by 2002:adf:dd0a:: with SMTP id a10mr41470262wrm.60.1638285560235; Tue, 30 Nov 2021 07:19:20 -0800 (PST) Received: from 127.0.0.1localhost ([85.255.232.109]) by smtp.gmail.com with ESMTPSA id d1sm16168483wrz.92.2021.11.30.07.19.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Nov 2021 07:19:19 -0800 (PST) From: Pavel Begunkov To: io-uring@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jakub Kicinski , Jonathan Lemon , "David S . Miller" , Willem de Bruijn , Eric Dumazet , Hideaki YOSHIFUJI , David Ahern , Jens Axboe , Pavel Begunkov Subject: [RFC 02/12] skbuff: pass a struct ubuf_info in msghdr Date: Tue, 30 Nov 2021 15:18:50 +0000 Message-Id: <07b21df727d9a3987d836e271946e73a629f4601.1638282789.git.asml.silence@gmail.com> X-Mailer: git-send-email 2.34.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Instead of the net stack managing ubuf_info, allow to pass it in from outside in a struct msghdr (in-kernel structure), so io_uring can make use of it. Signed-off-by: Pavel Begunkov --- fs/io_uring.c | 2 ++ include/linux/socket.h | 1 + net/compat.c | 1 + net/socket.c | 3 +++ 4 files changed, 7 insertions(+) diff --git a/fs/io_uring.c b/fs/io_uring.c index 72da3a75521a..59380e3454ad 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -4911,6 +4911,7 @@ static int io_send(struct io_kiocb *req, unsigned int issue_flags) msg.msg_control = NULL; msg.msg_controllen = 0; msg.msg_namelen = 0; + msg.msg_ubuf = NULL; flags = req->sr_msg.msg_flags; if (issue_flags & IO_URING_F_NONBLOCK) @@ -5157,6 +5158,7 @@ static int io_recv(struct io_kiocb *req, unsigned int issue_flags) msg.msg_namelen = 0; msg.msg_iocb = NULL; msg.msg_flags = 0; + msg.msg_ubuf = NULL; flags = req->sr_msg.msg_flags; if (force_nonblock) diff --git a/include/linux/socket.h b/include/linux/socket.h index 8ef26d89ef49..6bd2c6b0c6f2 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -65,6 +65,7 @@ struct msghdr { __kernel_size_t msg_controllen; /* ancillary data buffer length */ unsigned int msg_flags; /* flags on received message */ struct kiocb *msg_iocb; /* ptr to iocb for async requests */ + struct ubuf_info *msg_ubuf; }; struct user_msghdr { diff --git a/net/compat.c b/net/compat.c index 210fc3b4d0d8..6cd2e7683dd0 100644 --- a/net/compat.c +++ b/net/compat.c @@ -80,6 +80,7 @@ int __get_compat_msghdr(struct msghdr *kmsg, return -EMSGSIZE; kmsg->msg_iocb = NULL; + kmsg->msg_ubuf = NULL; *ptr = msg.msg_iov; *len = msg.msg_iovlen; return 0; diff --git a/net/socket.c b/net/socket.c index 7f64a6eccf63..0a29b616a38c 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2023,6 +2023,7 @@ int __sys_sendto(int fd, void __user *buff, size_t len, unsigned int flags, msg.msg_control = NULL; msg.msg_controllen = 0; msg.msg_namelen = 0; + msg.msg_ubuf = NULL; if (addr) { err = move_addr_to_kernel(addr, addr_len, &address); if (err < 0) @@ -2088,6 +2089,7 @@ int __sys_recvfrom(int fd, void __user *ubuf, size_t size, unsigned int flags, msg.msg_namelen = 0; msg.msg_iocb = NULL; msg.msg_flags = 0; + msg.msg_ubuf = NULL; if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; err = sock_recvmsg(sock, &msg, flags); @@ -2326,6 +2328,7 @@ int __copy_msghdr_from_user(struct msghdr *kmsg, return -EMSGSIZE; kmsg->msg_iocb = NULL; + kmsg->msg_ubuf = NULL; *uiov = msg.msg_iov; *nsegs = msg.msg_iovlen; return 0; -- 2.34.0