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 AAE7DC433EF for ; Thu, 7 Jul 2022 01:35:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234880AbiGGBfY (ORCPT ); Wed, 6 Jul 2022 21:35:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234632AbiGGBfV (ORCPT ); Wed, 6 Jul 2022 21:35:21 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1CBB22E9FB for ; Wed, 6 Jul 2022 18:35:21 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D0D83B81F68 for ; Thu, 7 Jul 2022 01:35:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 197FEC3411C; Thu, 7 Jul 2022 01:35:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1657157718; bh=bFIp60geipwLSB+ICHh2QaeJhwkLqSi9HpX7SmnwQJY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t96QVcsTnplZ5fmLHIgbJrRZV6ELwrsRghp7n3mpQhk1WM1zZWbW9Iq2z4AuQJK/K 6+xXjYW5AImWD/IOPQCFEuWVvPUX+aGM/BygVcAOU3aFR88zmSWAuIaz1qa1x23KMm QbRfG5CCY9pX0sLatLOpPYAI7skquMrjwMSF0p8PHBJ1RUnGeb7Rm5bd5Aq3peGs5m 7a2MJPl4orbY7+aijnwx0Xd3xfuFhZcBgmt8/zv3sfqLYDb470Mmm65wa0nzCH1SZT ukO70u820QVza81ynk87JH+R58bugYjClYdhs4HZb84gv1F04eQYXYHXTQnN39BYfi J50UfHMckryIQ== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, borisp@nvidia.com, john.fastabend@gmail.com, maximmi@nvidia.com, tariqt@nvidia.com, Jakub Kicinski Subject: [PATCH net-next 4/6] tls: rx: coalesce exit paths in tls_decrypt_sg() Date: Wed, 6 Jul 2022 18:35:08 -0700 Message-Id: <20220707013510.1372695-5-kuba@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220707013510.1372695-1-kuba@kernel.org> References: <20220707013510.1372695-1-kuba@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Jump to the free() call, instead of having to remember to free the memory in multiple places. Signed-off-by: Jakub Kicinski --- net/tls/tls_sw.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index 5534962963c2..2afcf99105fb 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -1494,10 +1494,8 @@ static int decrypt_internal(struct sock *sk, struct sk_buff *skb, err = skb_copy_bits(skb, rxm->offset + TLS_HEADER_SIZE, &dctx->iv[iv_offset] + prot->salt_size, prot->iv_size); - if (err < 0) { - kfree(mem); - return err; - } + if (err < 0) + goto exit_free; memcpy(&dctx->iv[iv_offset], tls_ctx->rx.iv, prot->salt_size); } xor_iv_with_seq(prot, &dctx->iv[iv_offset], tls_ctx->rx.rec_seq); @@ -1513,10 +1511,8 @@ static int decrypt_internal(struct sock *sk, struct sk_buff *skb, err = skb_to_sgvec(skb, &sgin[1], rxm->offset + prot->prepend_size, rxm->full_len - prot->prepend_size); - if (err < 0) { - kfree(mem); - return err; - } + if (err < 0) + goto exit_free; if (n_sgout) { if (out_iov) { @@ -1559,7 +1555,7 @@ static int decrypt_internal(struct sock *sk, struct sk_buff *skb, /* Release the pages in case iov was mapped to pages */ for (; pages > 0; pages--) put_page(sg_page(&sgout[pages])); - +exit_free: kfree(mem); return err; } -- 2.36.1