From nobody Fri Sep 20 03:55:42 2024 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (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 8089D81AAB; Thu, 28 Mar 2024 13:41:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.190 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711633263; cv=none; b=VA3/B9M7kprqeBRNHapyiaK72oq5vA/2w+IfPViLVZur2YCf4XNjLmX4QRrU8PPzUPGHU6Ri0WRGBxQTfXYp6W26dXLuUeMcqawXUmhSyWMxKAb+igkIcH1TDyNNye85/J+E6309s05JQA1dUtq9z6L0f4/Hc6g/jwcyJSVffr0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711633263; c=relaxed/simple; bh=+YJ5YJDIpQk7oAx/oDARWJ5TozchVIOjINAEsH4F3GE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=toL+PjiglsqG6YSKWe15wK5ab+jeRdVwcCzE7N8i1PiJpQL0x+4F0VkR7Q+QYAwCGqXlO/NYn/kNtD5AhklpNJBVFjqzDi0ZgoXXP0nOdzfvD84pBUIPal65DIsU7sDhIvcbOMR6481MBaTlzarbUo/drK4dHZy0z80Il1XJvZU= 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=45.249.212.190 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 [172.19.88.214]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4V54Ps4hZRz1xsXS; Thu, 28 Mar 2024 21:38:57 +0800 (CST) Received: from dggpemm500005.china.huawei.com (unknown [7.185.36.74]) by mail.maildlp.com (Postfix) with ESMTPS id 576261A016C; Thu, 28 Mar 2024 21:40:59 +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; Thu, 28 Mar 2024 21:40:59 +0800 From: Yunsheng Lin To: , , CC: , , Yunsheng Lin , Eric Dumazet Subject: [PATCH RFC 08/10] net: introduce the skb_copy_to_va_nocache() helper Date: Thu, 28 Mar 2024 21:38:37 +0800 Message-ID: <20240328133839.13620-9-linyunsheng@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20240328133839.13620-1-linyunsheng@huawei.com> References: <20240328133839.13620-1-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: dggems705-chm.china.huawei.com (10.3.19.182) 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 b5e00702acc1..20df93699b60 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2265,6 +2265,21 @@ 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