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 X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 A4789C388F7 for ; Mon, 9 Nov 2020 10:52:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 56E21206E5 for ; Mon, 9 Nov 2020 10:52:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729413AbgKIKwt (ORCPT ); Mon, 9 Nov 2020 05:52:49 -0500 Received: from stargate.chelsio.com ([12.32.117.8]:52196 "EHLO stargate.chelsio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729402AbgKIKwr (ORCPT ); Mon, 9 Nov 2020 05:52:47 -0500 Received: from localhost.localdomain (redhouse.blr.asicdesigners.com [10.193.185.57]) by stargate.chelsio.com (8.13.8/8.13.8) with ESMTP id 0A9AqQMe011444; Mon, 9 Nov 2020 02:52:42 -0800 From: Rohit Maheshwari To: kuba@kernel.org, netdev@vger.kernel.org, davem@davemloft.net Cc: secdev@chelsio.com, Rohit Maheshwari Subject: [net v6 05/12] ch_ktls: Correction in trimmed_len calculation Date: Mon, 9 Nov 2020 16:21:35 +0530 Message-Id: <20201109105142.15398-6-rohitm@chelsio.com> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20201109105142.15398-1-rohitm@chelsio.com> References: <20201109105142.15398-1-rohitm@chelsio.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org trimmed length calculation goes wrong if skb has only tag part to send. It should be zero if there is no data bytes apart from TAG. Fixes: dc05f3df8fac ("chcr: Handle first or middle part of record") Signed-off-by: Rohit Maheshwari --- .../chelsio/inline_crypto/ch_ktls/chcr_ktls.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c index 950841988ffe..4286decce095 100644 --- a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c +++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c @@ -1729,10 +1729,13 @@ static int chcr_short_record_handler(struct chcr_ktls_info *tx_info, if (remaining_record > 0 && remaining_record < TLS_CIPHER_AES_GCM_128_TAG_SIZE) { - int trimmed_len = data_len - - (TLS_CIPHER_AES_GCM_128_TAG_SIZE - remaining_record); - /* don't process the pkt if it is only a partial tag */ - if (data_len < TLS_CIPHER_AES_GCM_128_TAG_SIZE) + int trimmed_len = 0; + + if (tls_end_offset > TLS_CIPHER_AES_GCM_128_TAG_SIZE) + trimmed_len = data_len - + (TLS_CIPHER_AES_GCM_128_TAG_SIZE - + remaining_record); + if (!trimmed_len) goto out; WARN_ON(trimmed_len > data_len); -- 2.18.1