From patchwork Tue Nov 19 22:21:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Justin Iurman X-Patchwork-Id: 13880594 X-Patchwork-Delegate: kuba@kernel.org Received: from serv108.segi.ulg.ac.be (serv108.segi.ulg.ac.be [139.165.32.111]) (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 9C4FB188704; Tue, 19 Nov 2024 22:21:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=139.165.32.111 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732054919; cv=none; b=Sk0ilprGot6hWoNlJBQg6bz/l9KtVJG5HKUueVg5gW97d7MGgDj87+IETaUZCdbGQMUpTj9lIv5YmkeCvl0Q7GpbS1OSYrwmTKOBw10dkhndOfm9Q/cHiOAF4TOKk+CFnlTnL09wQae0oQVEvBZTlGPxwmcjjJJ1JQ3SnqJcHME= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732054919; c=relaxed/simple; bh=cF1iOYXgx7EUZBi/kFYrkWmAEw8t0MrdXPp2O/hCa+U=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=TkEGOuguRAC+lNKMJl4UaVbk3GYoSz6gAm3e9pjq8TgNo2Vdl0btYoDs26X6o0I2MYr3M8btvvfqCnQeArOsVNwLX88tWUEq6BrTGXAi0Ea+PVP43idXhMS0IRm89jTCypyGdMpEy2tiQ6cwLAvkId+u9dExy/KKELt928i3rbk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=uliege.be; spf=pass smtp.mailfrom=uliege.be; dkim=pass (2048-bit key) header.d=uliege.be header.i=@uliege.be header.b=WerwblkY; arc=none smtp.client-ip=139.165.32.111 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=uliege.be Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=uliege.be Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=uliege.be header.i=@uliege.be header.b="WerwblkY" Received: from ubuntu.home (220.24-245-81.adsl-dyn.isp.belgacom.be [81.245.24.220]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by serv108.segi.ulg.ac.be (Postfix) with ESMTPSA id 62B9B200CCF3; Tue, 19 Nov 2024 23:21:50 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 serv108.segi.ulg.ac.be 62B9B200CCF3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=uliege.be; s=ulg20190529; t=1732054910; bh=to687Gkwrc1hnQQoEgmLYx3ysEJ7wdMxa7NT5CZGMhM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WerwblkYCjfYkSMiAfJdKYlb3ZEkL1aXboxG3JjQQNo2IVyfSDc2v6B6r2WkXkrWn 9vUxRtdr3InrhOSsBPPhbkotK4G1TU1emw5LFLge97hNA8quu+eI57hVxkasSaAU+e E/ZJrUf3RlfKogS58f7s2QBWgs8Cu45kpUBzZCMOVE9Rx1pYovwbJZCIcpcOO4kvif fARCPu44F50f8/EWxFYVcLa+UKB0ejetM8MCJEO6+fXbel9viBfhgaK93IFzAWJpUT +7fMkn9jReq57K9WHfOINuoutJGP44rFE3fBmOZpyg/Kok29Eard++3MFHl2XFjldi p1KS8LscOkv9A== From: Justin Iurman To: netdev@vger.kernel.org Cc: davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, linux-kernel@vger.kernel.org, justin.iurman@uliege.be, Alexander Lobakin , Vadim Fedorenko Subject: [PATCH net-next v5 1/4] include: net: add static inline dst_dev_overhead() to dst.h Date: Tue, 19 Nov 2024 23:21:36 +0100 Message-Id: <20241119222139.14338-2-justin.iurman@uliege.be> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241119222139.14338-1-justin.iurman@uliege.be> References: <20241119222139.14338-1-justin.iurman@uliege.be> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org Add static inline dst_dev_overhead() function to include/net/dst.h. This helper function is used by ioam6_iptunnel, rpl_iptunnel and seg6_iptunnel to get the dev's overhead based on a cache entry (dst_entry). If the cache is empty, the default and generic value skb->mac_len is returned. Otherwise, LL_RESERVED_SPACE() over dst's dev is returned. Signed-off-by: Justin Iurman Cc: Alexander Lobakin Cc: Vadim Fedorenko --- include/net/dst.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/net/dst.h b/include/net/dst.h index 0f303cc60252..08647c99d79c 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -440,6 +440,15 @@ static inline void dst_set_expires(struct dst_entry *dst, int timeout) dst->expires = expires; } +static inline unsigned int dst_dev_overhead(struct dst_entry *dst, + struct sk_buff *skb) +{ + if (likely(dst)) + return LL_RESERVED_SPACE(dst->dev); + + return skb->mac_len; +} + INDIRECT_CALLABLE_DECLARE(int ip6_output(struct net *, struct sock *, struct sk_buff *)); INDIRECT_CALLABLE_DECLARE(int ip_output(struct net *, struct sock *,