From patchwork Wed May 8 13:34:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunsheng Lin X-Patchwork-Id: 13658797 X-Patchwork-Delegate: kuba@kernel.org Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) (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 B86438625B; Wed, 8 May 2024 13:37:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.255 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715175423; cv=none; b=ECp0WqdppuZbl9OtJcCHY/9JlPmACWf6JgkZtxYukP7FbWA2Hx+WYyFXKcpJ89LOhPbmcFp28H8dADvwuw3k+s4X49u6zGebdOzPTfUTPdZD9FGXLzhP1JthBSBvW/jHxIW/3jAgwrF9NVaseYDe3wGmuvMWR5gLkvs+BLrcKWw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715175423; c=relaxed/simple; bh=1cSzT3pvCmXcsrHWza33+AomiBd6dzul6WthXh/J898=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=q4Z3G1ZIXzJ5DGouhzVSfKvi9qbHB5g0feHaLuvi3BUqDcq/i11jqfdnCb+oNMiE5NqbrpK5joqnMwWG6WVtm0OQw0fyJ1AoXBglF+HzKA0kvb/rjz2XPhq3R5QwcNbT3DWgMQK0AEfjqZ72dP7IK3XOQhOdERKDNpjQDqm4cxw= 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=45.249.212.255 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 [172.19.162.254]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4VZGLq50bxz1RCcR; Wed, 8 May 2024 21:33:39 +0800 (CST) Received: from dggpemm500005.china.huawei.com (unknown [7.185.36.74]) by mail.maildlp.com (Postfix) with ESMTPS id A21491800B8; Wed, 8 May 2024 21:36:59 +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; Wed, 8 May 2024 21:36:59 +0800 From: Yunsheng Lin To: , , CC: , , Yunsheng Lin , Alexander Duyck , Eric Dumazet Subject: [PATCH net-next v3 09/13] net: introduce the skb_copy_to_va_nocache() helper Date: Wed, 8 May 2024 21:34:04 +0800 Message-ID: <20240508133408.54708-10-linyunsheng@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20240508133408.54708-1-linyunsheng@huawei.com> References: <20240508133408.54708-1-linyunsheng@huawei.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500005.china.huawei.com (7.185.36.74) X-Patchwork-Delegate: kuba@kernel.org 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 0450494a1766..57421e680cce 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2196,6 +2196,21 @@ static inline int skb_copy_to_page_nocache(struct sock *sk, struct iov_iter *fro return 0; } +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 = 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