From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qk1-f169.google.com (mail-qk1-f169.google.com [209.85.222.169]) (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 3B42136123 for ; Thu, 29 Feb 2024 07:02:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.169 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709190139; cv=none; b=L+FZyBDvY+5zhNUoFHZcCpk4syG17rEpx43zKL3UzpKYVqyHVEDlfWXw/K4pVjGcglHPmNepPkg2+8PXRRZy2AM6wPy/Ci4/hYBZGmD4rJWurtrfEOwN8BjyewM5uEE70Am40Y9MtDc+UzckU4IGNpSkRvbNcweIx1+EtS0PeYY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709190139; c=relaxed/simple; bh=xOnSuaW66z4dGR4cynLvOvlF6HmlAMwc0YiJVCr/cTg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=suCHid+HPi8ibK8el2Xheu70Hw+wIcZ3bg8q7c6TL0ojBVj2IDhI2FEg4SYH2hMfpr1i5K1ETKbiRBXtnYbkJVq6jX6jnbmjd6YzCtVNVp9Wmu+18mF3bF5Hoy8Yg0U3PgCL8kKZ7kugKM09OvPuyrl3XUJuFVGcbuifWjMRMgk= 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=RYIZ9pXx; arc=none smtp.client-ip=209.85.222.169 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="RYIZ9pXx" Received: by mail-qk1-f169.google.com with SMTP id af79cd13be357-787bc61cb69so32644485a.1 for ; Wed, 28 Feb 2024 23:02:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1709190137; x=1709794937; 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=/rwIP8xtWkp7FKwXUuCASNZ2Kzby28YNechfEiqpq1w=; b=RYIZ9pXxMuftl7re2LawAvAiu0uEkOHg15PzIKDu+IxJDQ1T6EsFZmaXys0kR5K2XV QZqq7gHp+HJidkNoOXOQH49QtAmKmq/Ed0g2Fd2XNofiHdfh7EafFrtE1GbLvckUzNkS bA7w4YV5PB5BF9aSxPJZLc+gBVxorjyZyAzoc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709190137; x=1709794937; 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=/rwIP8xtWkp7FKwXUuCASNZ2Kzby28YNechfEiqpq1w=; b=q1SnW3l7ttFMRPgXDr33i1XlOvohO6+rDMz8ObrC6qARpAwujQW+efJWFx5+MbXkaS RnhH2hjZODqERqBvXuSugO3jovBo5qHfrnPlAi0t7EURLOoqfajX/udUuHwpap5gNKt1 g65wL3CWvENamW0KpgZGP4YvPZnU2pwjYLiLIpzQ4Kcvcs2uljpuQl6xPzEUwQYYrDto U4n9n6KOfmpEreHriDujIH7u3rf6V+duejUQ0CG4xCMjwPTcfpqwPCsHiYaMtj5VB6jx Iewl+ecrK9hVvEstEDhFqv/2oBcRi/isfvFoo01mnUXmvcGXKke7DXucVVebbFxpvHym efnQ== X-Gm-Message-State: AOJu0Yx8tIhHpV3XoCTn42vZaL8+r2pANKDUBVIGzhE9qBci5wYfUpjm BjoOjudC4AJ7MOXwBadm9nZsRHGn8x1rA8jVw+e27XQsl8uO56np0g56jW8mqZdBWD39IIuhjSE = X-Google-Smtp-Source: AGHT+IG3K3RCZUSi6z0p2ytT5KZMRy6NHcEEpO5r6Pzjxuo6TWc9d9ygmglODUNGXv6Ly2Jezo9bBw== X-Received: by 2002:a0c:e808:0:b0:68f:8e3a:51e9 with SMTP id y8-20020a0ce808000000b0068f8e3a51e9mr1441359qvn.35.1709190136867; Wed, 28 Feb 2024 23:02:16 -0800 (PST) Received: from lvnvda5233.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id mv1-20020a056214338100b0068f75622543sm435545qvb.1.2024.02.28.23.02.15 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 28 Feb 2024 23:02:16 -0800 (PST) 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, jiri@resnulli.us, richardcochran@gmail.com Subject: [PATCH net-next 2/2] bnxt_en: Retry for TX timestamp from FW until timeout specified Date: Wed, 28 Feb 2024 23:02:02 -0800 Message-Id: <20240229070202.107488-3-michael.chan@broadcom.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20240229070202.107488-1-michael.chan@broadcom.com> References: <20240229070202.107488-1-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="000000000000fe44a506127fd6e3" --000000000000fe44a506127fd6e3 Content-Transfer-Encoding: 8bit From: Pavan Chebbi Use the ptp_tx_timeout devlink parameter introduced in the previous patch to retry querying TX timestamp, up to the timeout specified. Firmware supports timeout values up to 65535 microseconds. The driver will set this firmware timeout value according to the ptp_tx_timeout parameter. If the ptp_tx_timeout value exceeds the maximum firmware value, the driver will retry in the context of bnxt_ptp_ts_aux_work(). Reviewed-by: Andy Gospodarek Signed-off-by: Pavan Chebbi Signed-off-by: Michael Chan --- Documentation/networking/devlink/bnxt.rst | 7 +++++++ drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c | 19 ++++++++++++++++--- drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h | 4 +++- 3 files changed, 26 insertions(+), 4 deletions(-) diff --git a/Documentation/networking/devlink/bnxt.rst b/Documentation/networking/devlink/bnxt.rst index a4fb27663cd6..48833c190c5b 100644 --- a/Documentation/networking/devlink/bnxt.rst +++ b/Documentation/networking/devlink/bnxt.rst @@ -41,6 +41,13 @@ parameters. - Generic Routing Encapsulation (GRE) version check will be enabled in the device. If disabled, the device will skip the version check for incoming packets. + * - ``ptp_tx_timeout`` + - u32 + - Runtime + - PTP Transmit timestamp timeout value in milliseconds. The default + value is 1000 and the maximum value is 5000. Use a higher value + on a busy network to prevent timeout retrieving the PTP Transmit + timestamp. Info versions ============= diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c index 4b50b07b9771..a05b50162e9e 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c @@ -122,10 +122,14 @@ 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_cfg *ptp = bp->ptp_cfg; + u32 tmo_us = ptp->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->ts_req_timeout = cpu_to_le16(BNXT_PTP_QTS_TIMEOUT); + req->ptp_seq_id = cpu_to_le32(ptp->tx_seqid); + req->ptp_hdr_offset = cpu_to_le16(ptp->tx_hdr_off); + tmo_us = min(tmo_us, BNXT_PTP_QTS_MAX_TMO_US); + req->ts_req_timeout = cpu_to_le16(tmo_us); } resp = hwrm_req_hold(bp, req); @@ -675,6 +679,8 @@ static void bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb) u64 ts = 0, ns = 0; int rc; + if (!ptp->txts_pending) + ptp->abs_txts_tmo = jiffies + msecs_to_jiffies(ptp->txts_tmo); rc = bnxt_hwrm_port_ts_query(bp, PORT_TS_QUERY_REQ_FLAGS_PATH_TX, &ts); if (!rc) { memset(×tamp, 0, sizeof(timestamp)); @@ -684,6 +690,10 @@ static void bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb) timestamp.hwtstamp = ns_to_ktime(ns); skb_tstamp_tx(ptp->tx_skb, ×tamp); } else { + if (!time_after_eq(jiffies, ptp->abs_txts_tmo)) { + ptp->txts_pending = true; + return; + } netdev_warn_once(bp->dev, "TS query for TX timer failed rc = %x\n", rc); } @@ -691,6 +701,7 @@ static void bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb) dev_kfree_skb_any(ptp->tx_skb); ptp->tx_skb = NULL; atomic_inc(&ptp->tx_avail); + ptp->txts_pending = false; } static long bnxt_ptp_ts_aux_work(struct ptp_clock_info *ptp_info) @@ -714,6 +725,8 @@ 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) + return 0; return HZ; } diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h index ee977620d33e..bfb165d2b365 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h @@ -24,7 +24,7 @@ #define BNXT_PTP_DFLT_TX_TMO 1000 /* ms */ #define BNXT_PTP_MAX_TX_TMO 5000 /* ms */ -#define BNXT_PTP_QTS_TIMEOUT 1000 +#define BNXT_PTP_QTS_MAX_TMO_US 65535 #define BNXT_PTP_QTS_TX_ENABLES (PORT_TS_QUERY_REQ_ENABLES_PTP_SEQ_ID | \ PORT_TS_QUERY_REQ_ENABLES_TS_REQ_TIMEOUT | \ PORT_TS_QUERY_REQ_ENABLES_PTP_HDR_OFFSET) @@ -117,12 +117,14 @@ struct bnxt_ptp_cfg { BNXT_PTP_MSG_PDELAY_REQ | \ BNXT_PTP_MSG_PDELAY_RESP) u8 tx_tstamp_en:1; + u8 txts_pending:1; int rx_filter; u32 tstamp_filters; u32 refclk_regs[2]; u32 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