From nobody Fri Sep 20 01:41:21 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 756B91940BB; Fri, 7 Jun 2024 12:41:39 +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=1717764100; cv=none; b=N6O6VE6pIN6sxOFRVlKQvQZJigbJr7Mo13LFwIhEvh+U1pwsIqBW1G0q8e6FOgxxY6L6ep842Al3/tsrUbXnYkAkurLu+hQrnINEmhPW0dprOI4cJIEoVtTwhrurlFTLwO1dksOfd5xnveSRGOsGHQ2iJhxsaDgyD8HfZc8+TSM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717764100; c=relaxed/simple; bh=uauXtgR/TkdHR+ZxtoY5XlMvLiJOZ2tlGCyUk53QpFI=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=LXWHJpyNLGR9b1SutRHxJHtJTJ/N9Xg6GHFs3HetsyR3DXY+oqUEL9c//im90az2wlytCGkVrcChNJjtlwNjo2O98sFxMYEyBNghYwZx+++wfKmXHSmwx/Rbnauk8Odwax42xiI+ejgEpnsCaL+IHPp90a9lA25YTbPBL6Oa+GI= 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 [172.19.163.252]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4VwglJ36dNzdZLl; Fri, 7 Jun 2024 20:40:12 +0800 (CST) Received: from dggpemf200006.china.huawei.com (unknown [7.185.36.61]) by mail.maildlp.com (Postfix) with ESMTPS id 80D4718007A; Fri, 7 Jun 2024 20:41:37 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by dggpemf200006.china.huawei.com (7.185.36.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 7 Jun 2024 20:41:37 +0800 From: Yunsheng Lin To: , , CC: , , Yunsheng Lin , Alexander Duyck , Eric Dumazet Subject: [PATCH net-next v7 11/15] net: introduce the skb_copy_to_va_nocache() helper Date: Fri, 7 Jun 2024 20:38:14 +0800 Message-ID: <20240607123819.40694-12-linyunsheng@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20240607123819.40694-1-linyunsheng@huawei.com> References: <20240607123819.40694-1-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: dggems703-chm.china.huawei.com (10.3.19.180) To dggpemf200006.china.huawei.com (7.185.36.61) 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(). CC: Alexander Duyck 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 953c8dc4e259..e178888e8a61 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2196,6 +2196,21 @@ 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