From nobody Fri Sep 20 01:31:52 2024 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CAD1812A170; Mon, 15 Apr 2024 13:22:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.188 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713187341; cv=none; b=a5LhcRVyoWaCSX27BGaId/9UWCaDSPKbeqUbiCCtl6xe0/l7UOhEafEQst/ClBZKUK/s2Q7Gg7+EbpQ0Lu3UmkrMX1S/TtLs4WVMEdMtPvRIWhbWIP72OO9DgNcDu11NtNST3ft9fs58n3yACIFs8myGaLLrCGb7En74TFPVhmg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713187341; c=relaxed/simple; bh=77TAy3kea4Va3Is1I0qN4USj8ONZ6KixwSmbOIBXyLo=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tBv/NIOvQ9DEiH7aTyMT6EiCxcj6Eznay6IOLwVDHJAVuXbUyZ/Fbkpi1r5XFX5Vl94BXN94IL1zfsU4lF1HpIIzch0jt93Vf5YijYt7zznJqtEAbXvTxCOlREXrUoMLHnCu9EcaizsAaxOE6DZ41SkFgIOOND3L5gmXFzOenXo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.48]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4VJ76Y514PzTmQ5; Mon, 15 Apr 2024 21:19:01 +0800 (CST) Received: from dggpemm500005.china.huawei.com (unknown [7.185.36.74]) by mail.maildlp.com (Postfix) with ESMTPS id AD24918005D; Mon, 15 Apr 2024 21:22:17 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by dggpemm500005.china.huawei.com (7.185.36.74) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Mon, 15 Apr 2024 21:22:17 +0800 From: Yunsheng Lin To: , , CC: , , Yunsheng Lin , Eric Dumazet Subject: [PATCH net-next v2 11/15] net: introduce the skb_copy_to_va_nocache() helper Date: Mon, 15 Apr 2024 21:19:36 +0800 Message-ID: <20240415131941.51153-12-linyunsheng@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20240415131941.51153-1-linyunsheng@huawei.com> References: <20240415131941.51153-1-linyunsheng@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm500005.china.huawei.com (7.185.36.74) Content-Type: text/plain; charset="utf-8" introduce the skb_copy_to_va_nocache() helper to avoid calling virt_to_page() and skb_copy_to_page_nocache(). Signed-off-by: Yunsheng Lin --- include/net/sock.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/net/sock.h b/include/net/sock.h index a495330c5c49..d214aeca72ad 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2272,6 +2272,21 @@ static inline int skb_copy_to_page_nocache(struct so= ck *sk, struct iov_iter *fro return 0; } =20 +static inline int skb_copy_to_va_nocache(struct sock *sk, struct iov_iter = *from, + struct sk_buff *skb, char *va, int copy) +{ + int err; + + err =3D skb_do_copy_data_nocache(sk, skb, from, va, copy, skb->len); + if (err) + return err; + + skb_len_add(skb, copy); + sk_wmem_queued_add(sk, copy); + sk_mem_charge(sk, copy); + return 0; +} + /** * sk_wmem_alloc_get - returns write allocations * @sk: socket --=20 2.33.0