From patchwork Thu Jun 27 12:59:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 13714351 X-Patchwork-Delegate: kuba@kernel.org Received: from mail-ej1-f52.google.com (mail-ej1-f52.google.com [209.85.218.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EE3C51849FC; Thu, 27 Jun 2024 12:59:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.52 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719493190; cv=none; b=V9EDHdj2uIUCdoXp3E8Y1jQQKUykjq5Z11dcBOCTx/vc+rBoTjdlZPDU1ZQigVRclK3CuwABPeEgREuqAL8d/uHoeysiyNNV10CeJbPC7w8/EjHMDAJw1SIlfRqOP7WdlKGlUH72PwIa0AE/TsPiRrvCAQbJnc1Y9+/vb3uq7JY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719493190; c=relaxed/simple; bh=LspUSUQisVXEzuvKb/HhQ7sazs/RezEAljb8kvYO+/E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ficUMHi58oEtn2lQmJLmwvCwcyO+t1tl68Tl63TDrEbJqvTK+SGTLPqF06Bcb+GOQTMDfOxc6B3VBhMl2ZqQB74Vz5YTdixiU+66r6bEFCYSfbybewUjaI1Hvjo3QnPSl2imMA9ofQ8Onux9CElFKWDKoVOmdWb8jbIbOdFoY0c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=SmOKsqmD; arc=none smtp.client-ip=209.85.218.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="SmOKsqmD" Received: by mail-ej1-f52.google.com with SMTP id a640c23a62f3a-a72510ebc3fso698398366b.2; Thu, 27 Jun 2024 05:59:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1719493187; x=1720097987; 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=wMm73DkQQbIKqvrdgDxsT4wUsrpx/7Ch+5m3Ck5HfkI=; b=SmOKsqmDk+u+cQy2fQWjr7jwEsos+IX+lnHlhMkJmWVK68yrxQ//Sd3FAsRBCDL7HV 2icjMYR2dTBgWJn8QYbqI8NkDp/ZsxCq5cVpeRaoUTe3lRBXOtyJMgGx9esaPDTtB8H+ zL+b24TITYBLXU5VPxWTw0dUibzOmVC5agrdL1sCmqNDurG+SAx6jRfDYJx+hKWeO4lI 4IdcVdVleJZJqXuOMMCfggFvx97h1OEjVjFo8SDLDVE8cWgLgeosqI91jkM/tQ4WM11O nGutI9/XHrPZuRy7sZKT2TJU6Rwnm9YyvKXFI/mHfwPPyPMJ0Ko0ITItJrvBThF7JSKo 6lnw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1719493187; x=1720097987; 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=wMm73DkQQbIKqvrdgDxsT4wUsrpx/7Ch+5m3Ck5HfkI=; b=aNt5VbReomyZ7dJPsdUXmyUs+ul6nvYVTJFKvKqaR2bTJJEnk77DQDset1auj3DDIo KZ7Cbq48sZ3/GHcYlzLio39Dx3FCC3/McQqsD4bGEaPIMuRbhfGCzu9OZG29Md+/061X m46nGjlQIErGYmdtVcxjoBCJWtqSmrhZsOogDSwTkZWwN31dX2RT5gtRsGnTCAGbZ48I ZD/jJ2Mbh2sI7ecFa9dePEvVDJx7WuEpt8Xt9XJ/TcVUUfb1uOBEJWbPF34W8ZvJnqKm Tornl9xG697WSX59IHIfKZ12zWF4geSfxEKTXxB4HVlG3D0wC3T6OmXBo2xrrNAwCdlr BRCw== X-Forwarded-Encrypted: i=1; AJvYcCU8FN7XYqSp7K9Fu5iSAMHMhKRIdq16KqxJ96gdKTDNl998IC6gqypV0K1k7BFFys+8YsbJLf7vgqpCyhdUuStd1I/LAeJP X-Gm-Message-State: AOJu0YxBXksEBgm/sviz54PgazKWbZYGLRFlAiC0ubA4PhTihMGgAVoo Wg0TVtB5UFVL26aJ80IvYyCXFI8tc5byMqiTRKSGZweVapcTeEPgKXCTSKMS X-Google-Smtp-Source: AGHT+IF7w1FciUHwpOTOnu9uCADI6XtyROo6IXITmFVw9xvMf6MobEAU9TB6ZODtgxksRY3Th1iSQg== X-Received: by 2002:a17:906:7f89:b0:a6f:bf0f:4209 with SMTP id a640c23a62f3a-a7242c4b8c4mr1009588566b.42.1719493186099; Thu, 27 Jun 2024 05:59:46 -0700 (PDT) Received: from 127.0.0.1localhost ([163.114.131.193]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a729d7c95a3sm57267766b.194.2024.06.27.05.59.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jun 2024 05:59:45 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org, netdev@vger.kernel.org Cc: Jens Axboe , asml.silence@gmail.com, "David S . Miller" , Jakub Kicinski , David Ahern , Eric Dumazet , Willem de Bruijn Subject: [PATCH net-next 4/5] io_uring/net: move charging socket out of zc io_uring Date: Thu, 27 Jun 2024 13:59:44 +0100 Message-ID: <1e55ad85b726d50a45bdd35fc04e1565d3ba7896.1719190216.git.asml.silence@gmail.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org Currently, io_uring's io_sg_from_iter() duplicates the part of __zerocopy_sg_from_iter() charging pages to the socket. It'd be too easy to miss while changing it in net/, the chunk is not the most straightforward for outside users and full of internal implementation details. io_uring is not a good place to keep it, deduplicate it by moving out of the callback into __zerocopy_sg_from_iter(). Signed-off-by: Pavel Begunkov Reviewed-by: Willem de Bruijn --- include/linux/skbuff.h | 3 +++ include/linux/socket.h | 2 +- io_uring/net.c | 16 ++++------------ net/core/datagram.c | 10 +++++----- 4 files changed, 13 insertions(+), 18 deletions(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index f4cda3fbdb75..9c29bdd5596d 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1703,6 +1703,9 @@ int __zerocopy_sg_from_iter(struct msghdr *msg, struct sock *sk, struct sk_buff *skb, struct iov_iter *from, size_t length); +int zerocopy_fill_skb_from_iter(struct sk_buff *skb, + struct iov_iter *from, size_t length); + static inline int skb_zerocopy_iter_dgram(struct sk_buff *skb, struct msghdr *msg, int len) { diff --git a/include/linux/socket.h b/include/linux/socket.h index 89d16b90370b..2a1ff91d1914 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -76,7 +76,7 @@ struct msghdr { __kernel_size_t msg_controllen; /* ancillary data buffer length */ struct kiocb *msg_iocb; /* ptr to iocb for async requests */ struct ubuf_info *msg_ubuf; - int (*sg_from_iter)(struct sock *sk, struct sk_buff *skb, + int (*sg_from_iter)(struct sk_buff *skb, struct iov_iter *from, size_t length); }; diff --git a/io_uring/net.c b/io_uring/net.c index 7c98c4d50946..84a7602bcef1 100644 --- a/io_uring/net.c +++ b/io_uring/net.c @@ -1265,14 +1265,14 @@ int io_send_zc_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) return io_sendmsg_prep_setup(req, req->opcode == IORING_OP_SENDMSG_ZC); } -static int io_sg_from_iter_iovec(struct sock *sk, struct sk_buff *skb, +static int io_sg_from_iter_iovec(struct sk_buff *skb, struct iov_iter *from, size_t length) { skb_zcopy_downgrade_managed(skb); - return __zerocopy_sg_from_iter(NULL, sk, skb, from, length); + return zerocopy_fill_skb_from_iter(skb, from, length); } -static int io_sg_from_iter(struct sock *sk, struct sk_buff *skb, +static int io_sg_from_iter(struct sk_buff *skb, struct iov_iter *from, size_t length) { struct skb_shared_info *shinfo = skb_shinfo(skb); @@ -1285,7 +1285,7 @@ static int io_sg_from_iter(struct sock *sk, struct sk_buff *skb, if (!frag) shinfo->flags |= SKBFL_MANAGED_FRAG_REFS; else if (unlikely(!skb_zcopy_managed(skb))) - return __zerocopy_sg_from_iter(NULL, sk, skb, from, length); + return zerocopy_fill_skb_from_iter(skb, from, length); bi.bi_size = min(from->count, length); bi.bi_bvec_done = from->iov_offset; @@ -1312,14 +1312,6 @@ static int io_sg_from_iter(struct sock *sk, struct sk_buff *skb, skb->data_len += copied; skb->len += copied; skb->truesize += truesize; - - if (sk && sk->sk_type == SOCK_STREAM) { - sk_wmem_queued_add(sk, truesize); - if (!skb_zcopy_pure(skb)) - sk_mem_charge(sk, truesize); - } else { - refcount_add(truesize, &skb->sk->sk_wmem_alloc); - } return ret; } diff --git a/net/core/datagram.c b/net/core/datagram.c index 2b24d69b1e94..554316c40883 100644 --- a/net/core/datagram.c +++ b/net/core/datagram.c @@ -610,8 +610,8 @@ int skb_copy_datagram_from_iter(struct sk_buff *skb, int offset, } EXPORT_SYMBOL(skb_copy_datagram_from_iter); -static int zerocopy_fill_skb_from_iter(struct sk_buff *skb, - struct iov_iter *from, size_t length) +int zerocopy_fill_skb_from_iter(struct sk_buff *skb, + struct iov_iter *from, size_t length) { int frag = skb_shinfo(skb)->nr_frags; @@ -687,11 +687,11 @@ int __zerocopy_sg_from_iter(struct msghdr *msg, struct sock *sk, int ret; if (msg && msg->msg_ubuf && msg->sg_from_iter) - return msg->sg_from_iter(sk, skb, from, length); + ret = msg->sg_from_iter(skb, from, length); + else + ret = zerocopy_fill_skb_from_iter(skb, from, length); - ret = zerocopy_fill_skb_from_iter(skb, from, length); truesize = skb->truesize - orig_size; - if (sk && sk->sk_type == SOCK_STREAM) { sk_wmem_queued_add(sk, truesize); if (!skb_zcopy_pure(skb))