From patchwork Tue Jun 28 16:30:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jesper Dangaard Brouer X-Patchwork-Id: 12898554 X-Patchwork-Delegate: bpf@iogearbox.net 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 8A9FEC433EF for ; Tue, 28 Jun 2022 16:34:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231803AbiF1Qey (ORCPT ); Tue, 28 Jun 2022 12:34:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50796 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230282AbiF1QeC (ORCPT ); Tue, 28 Jun 2022 12:34:02 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 89BE5286D0 for ; Tue, 28 Jun 2022 09:30:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1656433841; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ve3fL6e56zHBM1F6dKuSgsKexFwJa8X/ua0RDN8QPWg=; b=YdduEVYx5rsvBTZpPrFpq5vuiYUQW4X7o2SMGexzQtgGXsohNtZoa3FyDacM+EP8unnudL w0iRrWkJNrqvW3urbVNmyTZ37mrFh6C05zfVeTTVOg7ZL47yQQokE8r6AiFgDSdHwJkwCd KNhNyBgwRhUSg2Hn3H/BmIJ+fdWyavo= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-194-75dOT8mZPCuG8N9OZeQ7UA-1; Tue, 28 Jun 2022 12:30:40 -0400 X-MC-Unique: 75dOT8mZPCuG8N9OZeQ7UA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1EB4138149A6; Tue, 28 Jun 2022 16:30:40 +0000 (UTC) Received: from firesoul.localdomain (unknown [10.40.208.19]) by smtp.corp.redhat.com (Postfix) with ESMTP id AFFE01415108; Tue, 28 Jun 2022 16:30:39 +0000 (UTC) Received: from [192.168.42.3] (localhost [IPv6:::1]) by firesoul.localdomain (Postfix) with ESMTP id AE43430736C72; Tue, 28 Jun 2022 18:30:38 +0200 (CEST) Subject: [PATCH RFC bpf-next 1/9] i40e: Refactor i40e_ptp_rx_hwtstamp From: Jesper Dangaard Brouer To: bpf@vger.kernel.org Cc: xdp-hints@xdp-project.net, Jesper Dangaard Brouer Date: Tue, 28 Jun 2022 18:30:38 +0200 Message-ID: <165643383866.449467.13123784268411403387.stgit@firesoul> In-Reply-To: <165643378969.449467.13237011812569188299.stgit@firesoul> References: <165643378969.449467.13237011812569188299.stgit@firesoul> User-Agent: StGit/1.4 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.7 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net X-Patchwork-State: RFC No functional change, this is in preparation for later patches. Introduce i40e_ptp_rx_hwtstamp_raw() that doesn't depend on skb pointer as input. Keep i40e_ptp_rx_hwtstamp with same semantics as before. Signed-off-by: Jesper Dangaard Brouer --- drivers/net/ethernet/intel/i40e/i40e.h | 1 + drivers/net/ethernet/intel/i40e/i40e_ptp.c | 36 +++++++++++++++++++++------- 2 files changed, 28 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index 57f4ec4f8d2f..9eb6ea92eafe 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -1246,6 +1246,7 @@ void i40e_ptp_rx_hang(struct i40e_pf *pf); void i40e_ptp_tx_hang(struct i40e_pf *pf); void i40e_ptp_tx_hwtstamp(struct i40e_pf *pf); void i40e_ptp_rx_hwtstamp(struct i40e_pf *pf, struct sk_buff *skb, u8 index); +u64 i40e_ptp_rx_hwtstamp_raw(struct i40e_pf *pf, u8 index); void i40e_ptp_set_increment(struct i40e_pf *pf); int i40e_ptp_set_ts_config(struct i40e_pf *pf, struct ifreq *ifr); int i40e_ptp_get_ts_config(struct i40e_pf *pf, struct ifreq *ifr); diff --git a/drivers/net/ethernet/intel/i40e/i40e_ptp.c b/drivers/net/ethernet/intel/i40e/i40e_ptp.c index 61e5789d78db..8906e4bbf291 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ptp.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ptp.c @@ -816,18 +816,16 @@ void i40e_ptp_tx_hwtstamp(struct i40e_pf *pf) } /** - * i40e_ptp_rx_hwtstamp - Utility function which checks for an Rx timestamp + * i40e_ptp_rx_hwtstamp_raw - Utility function which checks for an Rx timestamp * @pf: Board private structure - * @skb: Particular skb to send timestamp with * @index: Index into the receive timestamp registers for the timestamp * * The XL710 receives a notification in the receive descriptor with an offset - * into the set of RXTIME registers where the timestamp is for that skb. This + * into the set of RXTIME registers where the timestamp is for that pkt. This * function goes and fetches the receive timestamp from that offset, if a valid - * one exists. The RXTIME registers are in ns, so we must convert the result - * first. + * one exists, else zero is returned. **/ -void i40e_ptp_rx_hwtstamp(struct i40e_pf *pf, struct sk_buff *skb, u8 index) +u64 i40e_ptp_rx_hwtstamp_raw(struct i40e_pf *pf, u8 index) { u32 prttsyn_stat, hi, lo; struct i40e_hw *hw; @@ -837,7 +835,7 @@ void i40e_ptp_rx_hwtstamp(struct i40e_pf *pf, struct sk_buff *skb, u8 index) * doing Tx timestamping, check if Rx timestamping is configured. */ if (!(pf->flags & I40E_FLAG_PTP) || !pf->ptp_rx) - return; + return 0; hw = &pf->hw; @@ -849,7 +847,7 @@ void i40e_ptp_rx_hwtstamp(struct i40e_pf *pf, struct sk_buff *skb, u8 index) /* TODO: Should we warn about missing Rx timestamp event? */ if (!(prttsyn_stat & BIT(index))) { spin_unlock_bh(&pf->ptp_rx_lock); - return; + return 0; } /* Clear the latched event since we're about to read its register */ @@ -862,7 +860,27 @@ void i40e_ptp_rx_hwtstamp(struct i40e_pf *pf, struct sk_buff *skb, u8 index) ns = (((u64)hi) << 32) | lo; - i40e_ptp_convert_to_hwtstamp(skb_hwtstamps(skb), ns); + return ns; +} + +/** + * i40e_ptp_rx_hwtstamp - Utility function which checks for an Rx timestamp + * @pf: Board private structure + * @skb: Particular skb to send timestamp with + * @index: Index into the receive timestamp registers for the timestamp + * + * The XL710 receives a notification in the receive descriptor with an offset + * into the set of RXTIME registers where the timestamp is for that skb. This + * function goes and fetches the receive timestamp from that offset, if a valid + * one exists. The RXTIME registers are in ns, so we must convert the result + * first. + **/ +void i40e_ptp_rx_hwtstamp(struct i40e_pf *pf, struct sk_buff *skb, u8 index) +{ + u64 ns = i40e_ptp_rx_hwtstamp_raw(pf, index); + + if (ns) + i40e_ptp_convert_to_hwtstamp(skb_hwtstamps(skb), ns); } /**