From nobody Thu Sep 19 23:25:10 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 96775171E7D; Tue, 25 Jun 2024 13:55:44 +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=1719323746; cv=none; b=Su4Br1qnaJnrZ0nHx+qVLlISCrgfwe61sKIbrf6VbtR3XPQjtS9ZGCQrU1oqjgI93WP4msfDBn9pnWH/z+MY7IHptuSV8+LuH5AWIzG/aJFz1XTQwLKPkqxIZZf8TfT9KmumL5FU2zvCQ+lpc/++b4vJ7SYXPlicbN13jmeiDKc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719323746; c=relaxed/simple; bh=H6oSKzpWrJB+XFfmOt3I8gFC7XnrqHMPyyxig9RaxNM=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=unK8bIyW+rk64YpMf+OkDL5+ndOmunHP5vHr39CymwglOZcaGP3sAZVPlGUDQAqDUKUPvDjcvHK7XcJdnkovSe4p57otQ1jl2rXKZs/JLulUYgwhjqubkpq4AUwg2uEy258QL23HJxcJgE+Auy8x3lkz/Dj0kNLnXswQ7+FhINU= 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 [172.19.88.105]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4W7mXK0fKszddBT; Tue, 25 Jun 2024 21:54:09 +0800 (CST) Received: from dggpemf200006.china.huawei.com (unknown [7.185.36.61]) by mail.maildlp.com (Postfix) with ESMTPS id 94027140155; Tue, 25 Jun 2024 21:55:42 +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; Tue, 25 Jun 2024 21:55:42 +0800 From: Yunsheng Lin To: , , CC: , , Yunsheng Lin , Alexander Duyck , Eric Dumazet Subject: [PATCH net-next v9 09/13] net: introduce the skb_copy_to_va_nocache() helper Date: Tue, 25 Jun 2024 21:52:12 +0800 Message-ID: <20240625135216.47007-10-linyunsheng@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20240625135216.47007-1-linyunsheng@huawei.com> References: <20240625135216.47007-1-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 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 cce23ac4d514..7ad235465485 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2201,6 +2201,21 @@ 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