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 3FEE31D523 for ; Wed, 4 Oct 2023 18:05:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B46C7C433C7; Wed, 4 Oct 2023 18:05:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1696442739; bh=yOVDg2LRyxXJv0vCyRtXuLjVLZ/NaXw+WXFmpiPr4g4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OehoiFwJZ7X0WxeOXUYE/s4yCQUJ/uyOPk6tt0qs4RQKrveb11a729JdX31CfIFcf QwNyL0GkEkGZvV/uubkFy4uR07QuaNQczk6ru8cH+J3LT2FI34jIPrAOKbMiflvXF1 td8fiHcBA+xhAkMJXe91DXtRtmVrJGPqbTC+7jOc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Arthur Kiyanovski , David Arinzon , Noam Dagan , Saeed Bishara , Shay Agroskin , Sebastian Andrzej Siewior , Jesper Dangaard Brouer , Paolo Abeni , Sasha Levin Subject: [PATCH 5.15 064/183] net: ena: Flush XDP packets on error. Date: Wed, 4 Oct 2023 19:54:55 +0200 Message-ID: <20231004175206.561028751@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231004175203.943277832@linuxfoundation.org> References: <20231004175203.943277832@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sebastian Andrzej Siewior [ Upstream commit 6f411fb5ca9419090bee6a0a46425e0a5060b734 ] xdp_do_flush() should be invoked before leaving the NAPI poll function after a XDP-redirect. This is not the case if the driver leaves via the error path (after having a redirect in one of its previous iterations). Invoke xdp_do_flush() also in the error path. Cc: Arthur Kiyanovski Cc: David Arinzon Cc: Noam Dagan Cc: Saeed Bishara Cc: Shay Agroskin Fixes: a318c70ad152b ("net: ena: introduce XDP redirect implementation") Acked-by: Arthur Kiyanovski Signed-off-by: Sebastian Andrzej Siewior Acked-by: Jesper Dangaard Brouer Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index f3673be4fc087..3eba01de95259 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -1788,6 +1788,9 @@ static int ena_clean_rx_irq(struct ena_ring *rx_ring, struct napi_struct *napi, return work_done; error: + if (xdp_flags & ENA_XDP_REDIRECT) + xdp_do_flush(); + adapter = netdev_priv(rx_ring->netdev); if (rc == -ENOSPC) { -- 2.40.1