From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 868A8154BF for ; Wed, 20 Sep 2023 12:16:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 06888C43391; Wed, 20 Sep 2023 12:16:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1695212177; bh=UYGpmW7MglKjJKy02JcARy33fXXhfBKkoRbEuNzyyrM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aLbgzn1sMQhakgBi+de7J/Un+9cidJvgoGOrurUo3j/XikIpRz3yGJVNoTi1146pw +ubvHvhWtvX+1vVMPr7ynVOzMHZW7T3x6EtrenNfivvShm7a1skm8wH1KYEaZUqYVp JUci+ZvpkyFond1M46cPc9VPYdZazQJHSDvog4A8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yuan Y Lu , Logan Gunthorpe , Dave Jiang , Jon Mason Subject: [PATCH 4.19 179/273] ntb: Drop packets when qp link is down Date: Wed, 20 Sep 2023 13:30:19 +0200 Message-ID: <20230920112852.047979042@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230920112846.440597133@linuxfoundation.org> References: <20230920112846.440597133@linuxfoundation.org> User-Agent: quilt/0.67 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 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dave Jiang commit f195a1a6fe416882984f8bd6c61afc1383171860 upstream. Currently when the transport receive packets after netdev has closed the transport returns error and triggers tx errors to be incremented and carrier to be stopped. There is no reason to return error if the device is already closed. Drop the packet and return 0. Fixes: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers") Reported-by: Yuan Y Lu Tested-by: Yuan Y Lu Reviewed-by: Logan Gunthorpe Signed-off-by: Dave Jiang Signed-off-by: Jon Mason Signed-off-by: Greg Kroah-Hartman --- drivers/ntb/ntb_transport.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -2046,9 +2046,13 @@ int ntb_transport_tx_enqueue(struct ntb_ struct ntb_queue_entry *entry; int rc; - if (!qp || !qp->link_is_up || !len) + if (!qp || !len) return -EINVAL; + /* If the qp link is down already, just ignore. */ + if (!qp->link_is_up) + return 0; + entry = ntb_list_rm(&qp->ntb_tx_free_q_lock, &qp->tx_free_q); if (!entry) { qp->tx_err_no_buf++;