From patchwork Sat Jan 23 19:59:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonas Bonn X-Patchwork-Id: 369752 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 8A910C433E0 for ; Sat, 23 Jan 2021 20:05:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 59BC122DBF for ; Sat, 23 Jan 2021 20:05:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726439AbhAWUFR (ORCPT ); Sat, 23 Jan 2021 15:05:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36704 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726365AbhAWUAP (ORCPT ); Sat, 23 Jan 2021 15:00:15 -0500 Received: from mail-lf1-x133.google.com (mail-lf1-x133.google.com [IPv6:2a00:1450:4864:20::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83B2EC06121E for ; Sat, 23 Jan 2021 11:59:41 -0800 (PST) Received: by mail-lf1-x133.google.com with SMTP id a8so12308149lfi.8 for ; Sat, 23 Jan 2021 11:59:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=norrbonn-se.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=xqyGdbaS6LmomEk16hB8uNnXJFM5N97xCzDYtkMA9Rg=; b=KLAmp9h9yQlypWi6TuTMPfrmMUdpsT7NHO1yzs7JL6UGQCxOFHTXU4DfMLs5tCvuQP MLES0VcY5GBu4pCUQmSQQTCdyZAksT8K5IO/suMhNBXNtZnGZMOtpMy7ITqf4/O+IzhF igJAM7FQ0gDBD3eI4Gj2XtYwX/yIU3WFBkbYeXseF5b0TogNpUVicyi3IWFnEjVJJem0 Y/2fhc1w+yaz27o+mdBoBFxCa6CMdBnlcBABXGi9dlzWCIecNFBMf4FoODLfHKAYCKF3 KWxOHv/OAqrID4zLKiridcZ8TA84G/6W0eTorSI9bGEUm1JvK07b69vylmvHy/bWl2zf DGhw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=xqyGdbaS6LmomEk16hB8uNnXJFM5N97xCzDYtkMA9Rg=; b=RLWu+ZL6EweKjkwpCtOjrp9INJLe5dvrNcbGvE4WGdRT4TccARg6+ieswKX08KPmqS x9PihaLCOUk5qJHICrZbiBCxiM147Jh2TLzexzmdhMHPsAy965w2Sk4qIhUOpQykqzgr aWHffmvjzTM3u/rlDn42mUxcLS+Rl2xSN+l2QRZmhcgLoDcrpyFkU753c2c0dCUxlNHa ToLXul+BF6qanjR5FhTeUrUNrvOatGrsiPiiS8eRi7ScQFvtp92MnncQD3ODiM68B2Of Ci/CFFlcj4Kb3j2xZjYeNbPTR/yi4qbUj7D0MuKpcy1eoJgK70g8eKFu52ViypFF0lAK zbiw== X-Gm-Message-State: AOAM531tjDpuB0HGgK+2T5K3h/mFdiKtcVcHluiGjqcpzeq8dETKTw9L 96ogPz9dlqEfv936Le28hOhy9SUhp5yUKw== X-Google-Smtp-Source: ABdhPJwYniqzOAOYAAenGS65Eqv7GMPJY+hmQfHyrmV7ojMrw4N7WzR4zJ9nLasof91xK6K+eyorQw== X-Received: by 2002:a05:6512:228a:: with SMTP id f10mr890373lfu.412.1611431980114; Sat, 23 Jan 2021 11:59:40 -0800 (PST) Received: from mimer.lan (h-137-65.A159.priv.bahnhof.se. [81.170.137.65]) by smtp.gmail.com with ESMTPSA id f9sm1265177lft.114.2021.01.23.11.59.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 23 Jan 2021 11:59:39 -0800 (PST) From: Jonas Bonn To: laforge@gnumonks.org, netdev@vger.kernel.org, pbshelar@fb.com, kuba@kernel.org Cc: pablo@netfilter.org, Jonas Bonn Subject: [RFC PATCH 12/16] gtp: update rx_length_errors for abnormally short packets Date: Sat, 23 Jan 2021 20:59:12 +0100 Message-Id: <20210123195916.2765481-13-jonas@norrbonn.se> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210123195916.2765481-1-jonas@norrbonn.se> References: <20210123195916.2765481-1-jonas@norrbonn.se> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Based on work by Pravin Shelar. Update appropriate stats when packet transmission isn't possible. Signed-off-by: Jonas Bonn Acked-by: Harald Welte --- drivers/net/gtp.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 023d38b1098d..7ab8540e46d2 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -185,8 +185,10 @@ static int gtp_rx(struct pdp_ctx *pctx, struct sk_buff *skb, { /* Get rid of the GTP + UDP headers. */ if (iptunnel_pull_header(skb, hdrlen, skb->protocol, - !net_eq(sock_net(pctx->sk), dev_net(pctx->dev)))) - return -1; + !net_eq(sock_net(pctx->sk), dev_net(pctx->dev)))) { + pctx->dev->stats.rx_length_errors++; + goto err; + } netdev_dbg(pctx->dev, "forwarding packet from GGSN to uplink\n"); @@ -202,6 +204,10 @@ static int gtp_rx(struct pdp_ctx *pctx, struct sk_buff *skb, netif_rx(skb); return 0; + +err: + pctx->dev->stats.rx_dropped++; + return -1; } /* 1 means pass up to the stack, -1 means drop and 0 means decapsulated. */