From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qk1-f173.google.com (mail-qk1-f173.google.com [209.85.222.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C786618FC69 for ; Wed, 26 Jun 2024 16:43:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719420224; cv=none; b=BPIRkmC89cULQSKB023sWBtXJuJuz6KHarq/2LA6Tbqtt8RpoMNk+jM0Vpn2FZR6G5Rht1WW10E3oclDSYxZ8/mxZNVpSoG67Dydlw29cEiTP9X0TwqKDRxCmwjx6WQF4gcADpuMtaySALZOZXB3oEYtDvdeq7g5w5KlxRSs/y4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719420224; c=relaxed/simple; bh=q6SCppEVMh8RE03MOS4fkjSNotR5+rks9Odni/RIal0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Myr3daSj6Ht8BtuGKIWz2w4BWB/0CrfUNhbW5/xhfz2EJeampCu78mUktGq2mP7QRWq+LKjM79naI9g1rbizgFEf0Y35wFcIIXWG1RfMbw0A5YDMCa+TDjjWChvwRGcWLAAYP3CJNC2pJdVVTJ37nkE/W7xtxku95Rnib5vIqXo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com; spf=fail smtp.mailfrom=broadcom.com; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b=b08y2ARu; arc=none smtp.client-ip=209.85.222.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=broadcom.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="b08y2ARu" Received: by mail-qk1-f173.google.com with SMTP id af79cd13be357-79c10f03a5dso109139485a.0 for ; Wed, 26 Jun 2024 09:43:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1719420222; x=1720025022; darn=vger.kernel.org; h=mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:from:to:cc:subject:date:message-id:reply-to; bh=p/sZkjUgvkOCbJeVOYqKxVJtFR7npoa3CmT84myLW1c=; b=b08y2ARueigzXq2g2JhVKYLny0M1OQeASReHZVSKtjTmcSFpcNu/JxSHH0RtM0dE57 w8wWnVE8JCP2b2MC1CBkzu22uiyOxQRBhpuOBDJqjgvuUHFHwHv2d3Ulx28IyJWLOhL1 7F4Iyg5McUJNmt6ibf+1IZtWzI2o/tSLYYmhA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1719420222; x=1720025022; h=mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=p/sZkjUgvkOCbJeVOYqKxVJtFR7npoa3CmT84myLW1c=; b=VjrICNoEXIaIlO8CfRCy+ulynV4TtZpJa5IhPW9O73awhLEKcBw9aKZB4J6sIQoEXH BZ4w3v3RGfHxEZa4Brmv7qekXt7Wxzcr77pWaq6uUXNN/+aTih+tp2cm2FXjuKxUPMz2 BUNI9HycSHXRfaGsOqhmUmzTbem3dJz4Y9ZARS2kJpTslVRDA40byPXjM+LZPmFuoyY4 iyUrJhU31zBskmseU4K+D4VLjaWOHY0NMcKjy0q1bF3GB1G8iCifpavTxqkhKpOGGstO gpi3Blxwa5leTQVYLtg9hBEFzn8JL8vuxIQc3nGIZ+2ouea3IZarJhk/5/RJhKvm9bND pFQg== X-Gm-Message-State: AOJu0Yya/GvSQSmMTDi2k3irjQ7ypEe/XIMgzUqRTQVEb9zwbU4lKGHj SYEqKvDJ/h/mAq90NwsxAuLx8fUFZJAbFi0T4BMjjZu4OA2lX21crKNpeElXGA== X-Google-Smtp-Source: AGHT+IHT5N8ROGKuFkfImrdYyxJMRUXLctEoveXeIn/DKp+Q6ZsOSfBqTkaIbX7GpZOfROypbvdIzQ== X-Received: by 2002:a05:620a:394c:b0:795:5896:f847 with SMTP id af79cd13be357-79be6edcd6amr1129893985a.32.1719420221363; Wed, 26 Jun 2024 09:43:41 -0700 (PDT) Received: from lvnvda5233.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id af79cd13be357-79d53c42aafsm53570485a.58.2024.06.26.09.43.39 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 26 Jun 2024 09:43:40 -0700 (PDT) From: Michael Chan To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, pavan.chebbi@broadcom.com, andrew.gospodarek@broadcom.com, richardcochran@gmail.com Subject: [PATCH net-next 06/10] bnxt_en: Refactor all PTP TX timestamp fields into a struct Date: Wed, 26 Jun 2024 09:43:03 -0700 Message-ID: <20240626164307.219568-7-michael.chan@broadcom.com> X-Mailer: git-send-email 2.43.4 In-Reply-To: <20240626164307.219568-1-michael.chan@broadcom.com> References: <20240626164307.219568-1-michael.chan@broadcom.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000008e7973061bcdb726" --0000000000008e7973061bcdb726 Content-Transfer-Encoding: 8bit From: Pavan Chebbi On the older 5750X (P5) chips, we currently support only 1 TX PTP packet in-flight waiting for the timestamp. Refactor the datastructures to prepare to support up to 4 TX PTP packets. Combine all fields required for PTP TX timestamp query into one structure. An array of this structure will be added in follow-on patches to support multiple outstanding TX timestamps. Signed-off-by: Pavan Chebbi Signed-off-by: Michael Chan --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 10 +++-- drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c | 43 ++++++++++--------- drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h | 15 ++++--- 3 files changed, 40 insertions(+), 28 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 93858df547b2..c284aa370c64 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -516,14 +516,18 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) lflags |= cpu_to_le32(TX_BD_FLAGS_STAMP); tx_buf->is_ts_pkt = 1; } else if (!skb_is_gso(skb)) { + u16 seq_id, hdr_off; + if (atomic_dec_if_positive(&ptp->tx_avail) < 0) { atomic64_inc(&ptp->stats.ts_err); goto tx_no_ts; } - if (!bnxt_ptp_parse(skb, &ptp->tx_seqid, - &ptp->tx_hdr_off)) { + + if (!bnxt_ptp_parse(skb, &seq_id, &hdr_off)) { if (vlan_tag_flags) - ptp->tx_hdr_off += VLAN_HLEN; + hdr_off += VLAN_HLEN; + ptp->txts_req.tx_seqid = seq_id; + ptp->txts_req.tx_hdr_off = hdr_off; lflags |= cpu_to_le32(TX_BD_FLAGS_STAMP); tx_buf->is_ts_pkt = 1; skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c index a3795ef8887d..8431cd0ed9e9 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c @@ -123,11 +123,12 @@ static int bnxt_hwrm_port_ts_query(struct bnxt *bp, u32 flags, u64 *ts, req->flags = cpu_to_le32(flags); if ((flags & PORT_TS_QUERY_REQ_FLAGS_PATH) == PORT_TS_QUERY_REQ_FLAGS_PATH_TX) { + struct bnxt_ptp_tx_req *txts_req = &bp->ptp_cfg->txts_req; u32 tmo_us = txts_tmo * 1000; req->enables = cpu_to_le16(BNXT_PTP_QTS_TX_ENABLES); - req->ptp_seq_id = cpu_to_le32(bp->ptp_cfg->tx_seqid); - req->ptp_hdr_offset = cpu_to_le16(bp->ptp_cfg->tx_hdr_off); + req->ptp_seq_id = cpu_to_le32(txts_req->tx_seqid); + req->ptp_hdr_offset = cpu_to_le16(txts_req->tx_hdr_off); if (!tmo_us) tmo_us = BNXT_PTP_QTS_TIMEOUT; tmo_us = min(tmo_us, BNXT_PTP_QTS_MAX_TMO_US); @@ -686,15 +687,17 @@ static void bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb) { struct bnxt_ptp_cfg *ptp = bp->ptp_cfg; struct skb_shared_hwtstamps timestamp; + struct bnxt_ptp_tx_req *txts_req; unsigned long now = jiffies; u64 ts = 0, ns = 0; u32 tmo = 0; int rc; - if (!ptp->txts_pending) - ptp->abs_txts_tmo = now + msecs_to_jiffies(ptp->txts_tmo); - if (!time_after_eq(now, ptp->abs_txts_tmo)) - tmo = jiffies_to_msecs(ptp->abs_txts_tmo - now); + txts_req = &ptp->txts_req; + if (!txts_req->txts_pending) + txts_req->abs_txts_tmo = now + msecs_to_jiffies(ptp->txts_tmo); + if (!time_after_eq(now, txts_req->abs_txts_tmo)) + tmo = jiffies_to_msecs(txts_req->abs_txts_tmo - now); rc = bnxt_hwrm_port_ts_query(bp, PORT_TS_QUERY_REQ_FLAGS_PATH_TX, &ts, tmo); if (!rc) { @@ -703,11 +706,11 @@ static void bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb) ns = timecounter_cyc2time(&ptp->tc, ts); spin_unlock_bh(&ptp->ptp_lock); timestamp.hwtstamp = ns_to_ktime(ns); - skb_tstamp_tx(ptp->tx_skb, ×tamp); + skb_tstamp_tx(txts_req->tx_skb, ×tamp); ptp->stats.ts_pkts++; } else { - if (!time_after_eq(jiffies, ptp->abs_txts_tmo)) { - ptp->txts_pending = true; + if (!time_after_eq(jiffies, txts_req->abs_txts_tmo)) { + txts_req->txts_pending = true; return; } ptp->stats.ts_lost++; @@ -715,10 +718,10 @@ static void bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb) "TS query for TX timer failed rc = %x\n", rc); } - dev_kfree_skb_any(ptp->tx_skb); - ptp->tx_skb = NULL; + dev_kfree_skb_any(txts_req->tx_skb); + txts_req->tx_skb = NULL; atomic_inc(&ptp->tx_avail); - ptp->txts_pending = false; + txts_req->txts_pending = false; } static long bnxt_ptp_ts_aux_work(struct ptp_clock_info *ptp_info) @@ -728,8 +731,8 @@ static long bnxt_ptp_ts_aux_work(struct ptp_clock_info *ptp_info) unsigned long now = jiffies; struct bnxt *bp = ptp->bp; - if (ptp->tx_skb) - bnxt_stamp_tx_skb(bp, ptp->tx_skb); + if (ptp->txts_req.tx_skb) + bnxt_stamp_tx_skb(bp, ptp->txts_req.tx_skb); if (!time_after_eq(now, ptp->next_period)) return ptp->next_period - now; @@ -742,7 +745,7 @@ static long bnxt_ptp_ts_aux_work(struct ptp_clock_info *ptp_info) spin_unlock_bh(&ptp->ptp_lock); ptp->next_overflow_check = now + BNXT_PHC_OVERFLOW_PERIOD; } - if (ptp->txts_pending) + if (ptp->txts_req.txts_pending) return 0; return HZ; } @@ -751,11 +754,11 @@ int bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb) { struct bnxt_ptp_cfg *ptp = bp->ptp_cfg; - if (ptp->tx_skb) { + if (ptp->txts_req.tx_skb) { netdev_err(bp->dev, "deferring skb:one SKB is still outstanding\n"); return -EBUSY; } - ptp->tx_skb = skb; + ptp->txts_req.tx_skb = skb; ptp_schedule_worker(ptp->ptp_clock, 0); return 0; } @@ -1056,9 +1059,9 @@ void bnxt_ptp_clear(struct bnxt *bp) kfree(ptp->ptp_info.pin_config); ptp->ptp_info.pin_config = NULL; - if (ptp->tx_skb) { - dev_kfree_skb_any(ptp->tx_skb); - ptp->tx_skb = NULL; + if (ptp->txts_req.tx_skb) { + dev_kfree_skb_any(ptp->txts_req.tx_skb); + ptp->txts_req.tx_skb = NULL; } bnxt_unmap_ptp_regs(bp); diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h index d38c3500827f..90f1418211e9 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h @@ -85,6 +85,14 @@ struct bnxt_ptp_stats { atomic64_t ts_err; }; +struct bnxt_ptp_tx_req { + struct sk_buff *tx_skb; + u16 tx_seqid; + u16 tx_hdr_off; + u8 txts_pending:1; + unsigned long abs_txts_tmo; +}; + struct bnxt_ptp_cfg { struct ptp_clock_info ptp_info; struct ptp_clock *ptp_clock; @@ -93,7 +101,6 @@ struct bnxt_ptp_cfg { struct bnxt_pps pps_info; /* serialize timecounter access */ spinlock_t ptp_lock; - struct sk_buff *tx_skb; u64 current_time; u64 old_time; unsigned long next_period; @@ -102,8 +109,8 @@ struct bnxt_ptp_cfg { /* a 23b shift cyclecounter will overflow in ~36 mins. 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