From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 42419332919; Sat, 30 May 2026 16:56:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780160213; cv=none; b=mEyJMruYptgK3NprFKz+fs2Bp/zxGzC/iGmb5r+2+cfi4XNAM/zddqil2tdXEV0T/ZO2V6kiazp2pqkcHNdnJ2vL4y7wJGdMR48PJsGEhosKYKaDkm7aumexvIFbPALtr1Yvcyb66QvtwEJhbg+WslNVbWDRUXbof9q4Tw+OpOU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780160213; c=relaxed/simple; bh=6wB9XwudaZq/kqu/RB7mHQ3MM2fuCthnZHh9tya4J18=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lqp4GU3T9TXuotx66ihXAhGZV6+WWzJLOrIUB71R2sKQlm0u3HHdeX21mPzFIaXxlQputrOLyQbcjOsytSXu7MG9WFEw+VRnwESlh+8wiFgGayY9qTaGxcMRBeMmXQIXMhQQi41z89caCY9sPmMUufXJ+q85FLmRI6ROcT+ncJk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zdOGJgSX; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="zdOGJgSX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 728191F00893; Sat, 30 May 2026 16:56:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780160212; bh=qvcoGOPCL9iEreoVI3vKf8zTHnMaCC2kWFRyXKr/5Kw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=zdOGJgSXFpS88FMItqpEY0Vfn/kKxFgnEMI0rp8g8kxuOvIAuBmuHjHoOdO/NIdLq 6nu/tKq0sBIe6J7aXU22KEES2rA20JOMnnmSZh9v0vv2+oAS+gnb6hUAeEspOyI+aM GSWH6la+zqb5qCL4Zv0pN+W5dqA5HrpQNoEijHPs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Andrea Mayer , Justin Iurman , Jakub Kicinski Subject: [PATCH 6.1 269/969] seg6: fix seg6 lwtunnel output redirect for L2 reduced encap mode Date: Sat, 30 May 2026 17:56:33 +0200 Message-ID: <20260530160307.901943695@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260530160300.485627683@linuxfoundation.org> References: <20260530160300.485627683@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andrea Mayer commit ade67d5f588832c7ba131aadd4215a94ce0a15c8 upstream. When SEG6_IPTUN_MODE_L2ENCAP_RED (L2ENCAP_RED) was introduced, the condition in seg6_build_state() that excludes L2 encap modes from setting LWTUNNEL_STATE_OUTPUT_REDIRECT was not updated to account for the new mode. As a consequence, L2ENCAP_RED routes incorrectly trigger seg6_output() on the output path, where the packet is silently dropped because skb_mac_header_was_set() fails on L3 packets. Extend the check to also exclude L2ENCAP_RED, consistent with L2ENCAP. Fixes: 13f0296be8ec ("seg6: add support for SRv6 H.L2Encaps.Red behavior") Cc: stable@vger.kernel.org Signed-off-by: Andrea Mayer Reviewed-by: Justin Iurman Link: https://patch.msgid.link/20260418162838.31979-1-andrea.mayer@uniroma2.it Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/ipv6/seg6_iptunnel.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/ipv6/seg6_iptunnel.c +++ b/net/ipv6/seg6_iptunnel.c @@ -712,7 +712,8 @@ static int seg6_build_state(struct net * newts->type = LWTUNNEL_ENCAP_SEG6; newts->flags |= LWTUNNEL_STATE_INPUT_REDIRECT; - if (tuninfo->mode != SEG6_IPTUN_MODE_L2ENCAP) + if (tuninfo->mode != SEG6_IPTUN_MODE_L2ENCAP && + tuninfo->mode != SEG6_IPTUN_MODE_L2ENCAP_RED) newts->flags |= LWTUNNEL_STATE_OUTPUT_REDIRECT; newts->headroom = seg6_lwt_headroom(tuninfo);