From patchwork Thu Feb 11 21:10:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Pismenny X-Patchwork-Id: 382303 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3206EC433E0 for ; Thu, 11 Feb 2021 21:13:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0176D64DCD for ; Thu, 11 Feb 2021 21:13:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230272AbhBKVMx convert rfc822-to-8bit (ORCPT ); Thu, 11 Feb 2021 16:12:53 -0500 Received: from hqnvemgate24.nvidia.com ([216.228.121.143]:9222 "EHLO hqnvemgate24.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229895AbhBKVMF (ORCPT ); Thu, 11 Feb 2021 16:12:05 -0500 Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, AES256-SHA) id ; Thu, 11 Feb 2021 13:11:25 -0800 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 11 Feb 2021 21:11:17 +0000 Received: from vdi.nvidia.com (172.20.145.6) by mail.nvidia.com (172.20.187.15) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 11 Feb 2021 21:11:13 +0000 From: Boris Pismenny To: , , , , , , , , , , CC: , , , , , , Boris Pismenny Subject: [PATCH v4 net-next 05/21] net/tls: expose get_netdev_for_sock Date: Thu, 11 Feb 2021 23:10:28 +0200 Message-ID: <20210211211044.32701-6-borisp@mellanox.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20210211211044.32701-1-borisp@mellanox.com> References: <20210211211044.32701-1-borisp@mellanox.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org get_netdev_for_sock is a utility that is used to obtain the net_device structure from a connected socket. Later patches will use this for nvme-tcp DDP and DDP CRC offloads. Signed-off-by: Boris Pismenny Reviewed-by: Sagi Grimberg --- include/net/sock.h | 17 +++++++++++++++++ net/tls/tls_device.c | 20 ++------------------ 2 files changed, 19 insertions(+), 18 deletions(-) diff --git a/include/net/sock.h b/include/net/sock.h index 690e496a0e79..f6d70f689bd1 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2732,4 +2732,21 @@ void sock_set_sndtimeo(struct sock *sk, s64 secs); int sock_bind_add(struct sock *sk, struct sockaddr *addr, int addr_len); +/* Assume that the socket is already connected */ +static inline struct net_device *get_netdev_for_sock(struct sock *sk, bool hold) +{ + struct dst_entry *dst = sk_dst_get(sk); + struct net_device *netdev = NULL; + + if (likely(dst)) { + netdev = dst->dev; + if (hold) + dev_hold(netdev); + } + + dst_release(dst); + + return netdev; +} + #endif /* _SOCK_H */ diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c index d9cd229aa111..792c0a477850 100644 --- a/net/tls/tls_device.c +++ b/net/tls/tls_device.c @@ -106,22 +106,6 @@ static void tls_device_queue_ctx_destruction(struct tls_context *ctx) spin_unlock_irqrestore(&tls_device_lock, flags); } -/* We assume that the socket is already connected */ -static struct net_device *get_netdev_for_sock(struct sock *sk) -{ - struct dst_entry *dst = sk_dst_get(sk); - struct net_device *netdev = NULL; - - if (likely(dst)) { - netdev = netdev_sk_get_lowest_dev(dst->dev, sk); - dev_hold(netdev); - } - - dst_release(dst); - - return netdev; -} - static void destroy_record(struct tls_record_info *record) { int i; @@ -1106,7 +1090,7 @@ int tls_set_device_offload(struct sock *sk, struct tls_context *ctx) if (skb) TCP_SKB_CB(skb)->eor = 1; - netdev = get_netdev_for_sock(sk); + netdev = get_netdev_for_sock(sk, true); if (!netdev) { pr_err_ratelimited("%s: netdev not found\n", __func__); rc = -EINVAL; @@ -1182,7 +1166,7 @@ int tls_set_device_offload_rx(struct sock *sk, struct tls_context *ctx) if (ctx->crypto_recv.info.version != TLS_1_2_VERSION) return -EOPNOTSUPP; - netdev = get_netdev_for_sock(sk); + netdev = get_netdev_for_sock(sk, true); if (!netdev) { pr_err_ratelimited("%s: netdev not found\n", __func__); return -EINVAL;