From patchwork Wed Apr 12 09:42:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Yoong Siang X-Patchwork-Id: 13208693 X-Patchwork-Delegate: kuba@kernel.org 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 3C08CC77B6E for ; Wed, 12 Apr 2023 09:44:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231600AbjDLJn6 (ORCPT ); Wed, 12 Apr 2023 05:43:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231624AbjDLJns (ORCPT ); Wed, 12 Apr 2023 05:43:48 -0400 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF1278691; Wed, 12 Apr 2023 02:43:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1681292616; x=1712828616; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mhGhk0aFNDU+nvi/Zr0WQsY6I/0lnGV4GKGpzNN0N7A=; b=BSyv0eOEt3UXL2jf3IBcc9FBTfPmmjHBAqOuptMPOHxhWNnDIp2NtxnW db7eNNM6PCOH+qhyAuaWJaY4ijjVtwlODFa+JnzFxnKwAitamWhTNS12Y QY7meXqSoJa1Yvtz0BKCsEAk/HVzpqk4Fz8yRnoA7DUrd7GVVWFaxoSBO mbRhoeEJaC271MpPNTeQSztZAOorXjeqfvYNsyR1ticWucFlpPdrImfON Ux5uWaazbC99GjMC57/N2sSpmBUhx6oJjB2DFoZWxQWZAmGjnD3h/LDaz YCHBtKUvmnAPeA9WoS9LCC6+9lgIJtaZLazPlAo21pyDsQ/OxAO1DHptm w==; X-IronPort-AV: E=McAfee;i="6600,9927,10677"; a="346526426" X-IronPort-AV: E=Sophos;i="5.98,338,1673942400"; d="scan'208";a="346526426" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Apr 2023 02:43:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10677"; a="682430956" X-IronPort-AV: E=Sophos;i="5.98,338,1673942400"; d="scan'208";a="682430956" Received: from p12ill20yoongsia.png.intel.com ([10.88.227.28]) by orsmga007.jf.intel.com with ESMTP; 12 Apr 2023 02:43:30 -0700 From: Song Yoong Siang To: Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Stanislav Fomichev , Alexander Duyck , Ong Boon Leong Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, xdp-hints@xdp-project.net, Song Yoong Siang Subject: [PATCH net-next v3 3/4] net: stmmac: add Rx HWTS metadata to XDP receive pkt Date: Wed, 12 Apr 2023 17:42:34 +0800 Message-Id: <20230412094235.589089-4-yoong.siang.song@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230412094235.589089-1-yoong.siang.song@intel.com> References: <20230412094235.589089-1-yoong.siang.song@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Add receive hardware timestamp metadata support via kfunc to XDP receive packets. Suggested-by: Stanislav Fomichev Signed-off-by: Song Yoong Siang --- drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 +++ .../net/ethernet/stmicro/stmmac/stmmac_main.c | 26 ++++++++++++++++++- 2 files changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index ac8ccf851708..826ac0ec88c6 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -94,6 +94,9 @@ struct stmmac_rx_buffer { struct stmmac_xdp_buff { struct xdp_buff xdp; + struct stmmac_priv *priv; + struct dma_desc *p; + struct dma_desc *np; }; struct stmmac_rx_queue { diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index f7bbdf04d20c..ed660927b628 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -5315,10 +5315,15 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue) xdp_init_buff(&ctx.xdp, buf_sz, &rx_q->xdp_rxq); xdp_prepare_buff(&ctx.xdp, page_address(buf->page), - buf->page_offset, buf1_len, false); + buf->page_offset, buf1_len, true); pre_len = ctx.xdp.data_end - ctx.xdp.data_hard_start - buf->page_offset; + + ctx.priv = priv; + ctx.p = p; + ctx.np = np; + skb = stmmac_xdp_run_prog(priv, &ctx.xdp); /* Due xdp_adjust_tail: DMA sync for_device * cover max len CPU touch @@ -7071,6 +7076,23 @@ void stmmac_fpe_handshake(struct stmmac_priv *priv, bool enable) } } +static int stmmac_xdp_rx_timestamp(const struct xdp_md *_ctx, u64 *timestamp) +{ + const struct stmmac_xdp_buff *ctx = (void *)_ctx; + + *timestamp = 0; + stmmac_get_rx_hwtstamp(ctx->priv, ctx->p, ctx->np, timestamp); + + if (*timestamp) + return 0; + + return -ENODATA; +} + +static const struct xdp_metadata_ops stmmac_xdp_metadata_ops = { + .xmo_rx_timestamp = stmmac_xdp_rx_timestamp, +}; + /** * stmmac_dvr_probe * @device: device pointer @@ -7178,6 +7200,8 @@ int stmmac_dvr_probe(struct device *device, ndev->netdev_ops = &stmmac_netdev_ops; + ndev->xdp_metadata_ops = &stmmac_xdp_metadata_ops; + ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM; ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |