From patchwork Mon Jul 17 16:06:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 13316518 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 dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qLQvF-004WpF-1a for linux-arm-kernel@lists.infradead.org; Mon, 17 Jul 2023 16:18:06 +0000 From: Jisheng Zhang Subject: [PATCH net-next v5 0/2] net: stmmac: improve driver statistics Date: Tue, 18 Jul 2023 00:06:28 +0800 Message-Id: <20230717160630.1892-1-jszhang@kernel.org> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+lwn-linux-arm-kernel=archive.lwn.net@lists.infradead.org List-Archive: To: Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev improve the stmmac driver statistics: 1. don't clear network driver statistics in .ndo_close() and .ndo_open() cycle 2. avoid some network driver statistics overflow on 32 bit platforms 3. use per-queue statistics where necessary to remove frequent cacheline ping pongs. NOTE: v1 and v2 are back ported from an internal LTS tree, I made some mistakes when backporting and squashing. Now, net-next + v3 has been well tested with 'ethtool -s' and 'ip -s link show'. Since v4: - rebased on the latest net-next Since v3: - coding style pointed out by Simon, I.E reverse xmas tree for local variable declarations and so on. - put the counters in queue structs, I.E per-queue rather than per-cpu - use _irqsave() variant where necessary. Since v2: - fix ethtool .get_sset_count, .get_strings and per queue stats couting. - fix .ndo_get_stats64 only counts the last cpu's pcpu stats. - fix typo: s/iff/if in commit msg. - remove unnecessary if statement brackets since we have removed one LoC. Since v1: - rebase on net-next - fold two original patches into one patch - fix issues found by lkp - update commit msg Jisheng Zhang (2): net: stmmac: don't clear network statistics in .ndo_open() net: stmmac: use per-queue 64 bit statistics where necessary drivers/net/ethernet/stmicro/stmmac/common.h | 39 ++-- .../net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 12 +- .../ethernet/stmicro/stmmac/dwmac100_dma.c | 7 +- .../ethernet/stmicro/stmmac/dwmac4_descs.c | 16 +- .../net/ethernet/stmicro/stmmac/dwmac4_lib.c | 15 +- .../net/ethernet/stmicro/stmmac/dwmac_lib.c | 12 +- .../ethernet/stmicro/stmmac/dwxgmac2_descs.c | 6 +- .../ethernet/stmicro/stmmac/dwxgmac2_dma.c | 14 +- .../net/ethernet/stmicro/stmmac/enh_desc.c | 20 +- drivers/net/ethernet/stmicro/stmmac/hwif.h | 12 +- .../net/ethernet/stmicro/stmmac/norm_desc.c | 15 +- drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 + .../ethernet/stmicro/stmmac/stmmac_ethtool.c | 123 ++++++++--- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 206 ++++++++++++++---- 14 files changed, 337 insertions(+), 162 deletions(-)