From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0CB18C433EF for ; Wed, 11 May 2022 12:19:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242410AbiEKMTu (ORCPT ); Wed, 11 May 2022 08:19:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33668 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242347AbiEKMTb (ORCPT ); Wed, 11 May 2022 08:19:31 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 17BBA73578 for ; Wed, 11 May 2022 05:19:27 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nolJH-0000qE-Ql; Wed, 11 May 2022 14:19:19 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1nolJI-001gNu-8e; Wed, 11 May 2022 14:19:18 +0200 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1nolJG-00BJXp-Bi; Wed, 11 May 2022 14:19:18 +0200 From: Oleksij Rempel To: Wolfgang Grandegger , Marc Kleine-Budde , Oliver Hartkopp Cc: Oleksij Rempel , Devid Antonio Filoni , kernel@pengutronix.de, linux-can@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, David Jander Subject: [PATCH 1/1] can: skb: add and set local_origin flag Date: Wed, 11 May 2022 14:19:13 +0200 Message-Id: <20220511121913.2696181-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add new can_skb_priv::local_origin flag to be able detect egress packages even if they was sent directly from kernel and not assigned to some socket. Signed-off-by: Oleksij Rempel Cc: Devid Antonio Filoni --- drivers/net/can/dev/skb.c | 3 +++ include/linux/can/skb.h | 1 + net/can/raw.c | 2 +- 3 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/dev/skb.c b/drivers/net/can/dev/skb.c index 61660248c69e..3e2357fb387e 100644 --- a/drivers/net/can/dev/skb.c +++ b/drivers/net/can/dev/skb.c @@ -63,6 +63,7 @@ int can_put_echo_skb(struct sk_buff *skb, struct net_device *dev, /* save frame_len to reuse it when transmission is completed */ can_skb_prv(skb)->frame_len = frame_len; + can_skb_prv(skb)->local_origin = true; skb_tx_timestamp(skb); @@ -200,6 +201,7 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf) can_skb_reserve(skb); can_skb_prv(skb)->ifindex = dev->ifindex; can_skb_prv(skb)->skbcnt = 0; + can_skb_prv(skb)->local_origin = false; *cf = skb_put_zero(skb, sizeof(struct can_frame)); @@ -231,6 +233,7 @@ struct sk_buff *alloc_canfd_skb(struct net_device *dev, can_skb_reserve(skb); can_skb_prv(skb)->ifindex = dev->ifindex; can_skb_prv(skb)->skbcnt = 0; + can_skb_prv(skb)->local_origin = false; *cfd = skb_put_zero(skb, sizeof(struct canfd_frame)); diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h index fdb22b00674a..1b8a8cf2b13b 100644 --- a/include/linux/can/skb.h +++ b/include/linux/can/skb.h @@ -52,6 +52,7 @@ struct can_skb_priv { int ifindex; int skbcnt; unsigned int frame_len; + bool local_origin; struct can_frame cf[]; }; diff --git a/net/can/raw.c b/net/can/raw.c index b7dbb57557f3..df2d9334b395 100644 --- a/net/can/raw.c +++ b/net/can/raw.c @@ -173,7 +173,7 @@ static void raw_rcv(struct sk_buff *oskb, void *data) /* add CAN specific message flags for raw_recvmsg() */ pflags = raw_flags(skb); *pflags = 0; - if (oskb->sk) + if (can_skb_prv(skb)->local_origin) *pflags |= MSG_DONTROUTE; if (oskb->sk == sk) *pflags |= MSG_CONFIRM; -- 2.30.2