From: Faizal Rahim <faizal.abdul.rahim@linux.intel.com>
To: Tony Nguyen <anthony.l.nguyen@intel.com>,
Przemek Kitszel <przemyslaw.kitszel@intel.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Simon Horman <horms@kernel.org>,
Russell King <linux@armlinux.org.uk>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jesper Dangaard Brouer <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Russell King <rmk+kernel@armlinux.org.uk>,
Furong Xu <0x1207@gmail.com>,
Vladimir Oltean <vladimir.oltean@nxp.com>,
Serge Semin <fancer.lancer@gmail.com>,
Xiaolei Wang <xiaolei.wang@windriver.com>,
Suraj Jaiswal <quic_jsuraj@quicinc.com>,
Kory Maincent <kory.maincent@bootlin.com>,
Petr Tesarik <petr@tesarici.cz>,
Faizal Rahim <faizal.abdul.rahim@linux.intel.com>,
Choong Yong Liang <yong.liang.choong@linux.intel.com>,
Kunihiko Hayashi <hayashi.kunihiko@socionext.com>,
Vinicius Costa Gomes <vinicius.gomes@intel.com>,
intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org, bpf@vger.kernel.org
Subject: [PATCH iwl-next v2 3/9] igc: Optimize the TX packet buffer utilization
Date: Wed, 5 Feb 2025 05:05:18 -0500 [thread overview]
Message-ID: <20250205100524.1138523-4-faizal.abdul.rahim@linux.intel.com> (raw)
In-Reply-To: <20250205100524.1138523-1-faizal.abdul.rahim@linux.intel.com>
Packet buffers (RX + TX) total 64KB. Neither RX or TX buffers can be
larger than 34KB. So divide the buffer equally, 32KB for each.
Co-developed-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Faizal Rahim <faizal.abdul.rahim@linux.intel.com>
---
drivers/net/ethernet/intel/igc/igc_defines.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/ethernet/intel/igc/igc_defines.h
index 8e449904aa7d..516ef70c98e9 100644
--- a/drivers/net/ethernet/intel/igc/igc_defines.h
+++ b/drivers/net/ethernet/intel/igc/igc_defines.h
@@ -400,7 +400,8 @@
#define I225_TXPBSIZE_DEFAULT 0x04000014 /* TXPBSIZE default */
#define IGC_RXPBS_CFG_TS_EN 0x80000000 /* Timestamp in Rx buffer */
-#define IGC_TXPBSIZE_TSN 0x04145145 /* 5k bytes buffer for each queue */
+ /* 7KB bytes buffer for each tx queue (total 4 queues) + 4KB for BMC*/
+#define IGC_TXPBSIZE_TSN 0x041c71c7
#define IGC_DTXMXPKTSZ_TSN 0x19 /* 1600 bytes of max TX DMA packet size */
#define IGC_DTXMXPKTSZ_DEFAULT 0x98 /* 9728-byte Jumbo frames */
--
2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Faizal Rahim <faizal.abdul.rahim@linux.intel.com>
To: Tony Nguyen <anthony.l.nguyen@intel.com>,
Przemek Kitszel <przemyslaw.kitszel@intel.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Simon Horman <horms@kernel.org>,
Russell King <linux@armlinux.org.uk>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jesper Dangaard Brouer <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Russell King <rmk+kernel@armlinux.org.uk>,
Furong Xu <0x1207@gmail.com>,
Vladimir Oltean <vladimir.oltean@nxp.com>,
Serge Semin <fancer.lancer@gmail.com>,
Xiaolei Wang <xiaolei.wang@windriver.com>,
Suraj Jaiswal <quic_jsuraj@quicinc.com>,
Kory Maincent <kory.maincent@bootlin.com>,
Petr Tesarik <petr@tesarici.cz>,
Faizal Rahim <faizal.abdul.rahim@linux.intel.com>,
Choong Yong Liang <yong.liang.choong@linux.intel.com>,
Kunihiko Hayashi <hayashi.kunihiko@socionext.com>,
Vinicius Costa Gomes <vinicius.gomes@intel.com>,
intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org, bpf@vger.kernel.org
Subject: [Intel-wired-lan] [PATCH iwl-next v2 3/9] igc: Optimize the TX packet buffer utilization
Date: Wed, 5 Feb 2025 05:05:18 -0500 [thread overview]
Message-ID: <20250205100524.1138523-4-faizal.abdul.rahim@linux.intel.com> (raw)
In-Reply-To: <20250205100524.1138523-1-faizal.abdul.rahim@linux.intel.com>
Packet buffers (RX + TX) total 64KB. Neither RX or TX buffers can be
larger than 34KB. So divide the buffer equally, 32KB for each.
Co-developed-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Faizal Rahim <faizal.abdul.rahim@linux.intel.com>
---
drivers/net/ethernet/intel/igc/igc_defines.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/ethernet/intel/igc/igc_defines.h
index 8e449904aa7d..516ef70c98e9 100644
--- a/drivers/net/ethernet/intel/igc/igc_defines.h
+++ b/drivers/net/ethernet/intel/igc/igc_defines.h
@@ -400,7 +400,8 @@
#define I225_TXPBSIZE_DEFAULT 0x04000014 /* TXPBSIZE default */
#define IGC_RXPBS_CFG_TS_EN 0x80000000 /* Timestamp in Rx buffer */
-#define IGC_TXPBSIZE_TSN 0x04145145 /* 5k bytes buffer for each queue */
+ /* 7KB bytes buffer for each tx queue (total 4 queues) + 4KB for BMC*/
+#define IGC_TXPBSIZE_TSN 0x041c71c7
#define IGC_DTXMXPKTSZ_TSN 0x19 /* 1600 bytes of max TX DMA packet size */
#define IGC_DTXMXPKTSZ_DEFAULT 0x98 /* 9728-byte Jumbo frames */
--
2.34.1
next prev parent reply other threads:[~2025-02-05 10:05 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-05 10:05 [PATCH iwl-next v2 0/9] igc: Add support for Frame Preemption feature in IGC Faizal Rahim
2025-02-05 10:05 ` [Intel-wired-lan] " Faizal Rahim
2025-02-05 10:05 ` [PATCH iwl-next v2 1/9] net: ethtool: mm: extract stmmac verification logic into common library Faizal Rahim
2025-02-05 10:05 ` [Intel-wired-lan] " Faizal Rahim
2025-02-05 10:05 ` [PATCH iwl-next v2 2/9] igc: Rename xdp_get_tx_ring() for non-xdp usage Faizal Rahim
2025-02-05 10:05 ` [Intel-wired-lan] " Faizal Rahim
2025-02-05 10:05 ` Faizal Rahim [this message]
2025-02-05 10:05 ` [Intel-wired-lan] [PATCH iwl-next v2 3/9] igc: Optimize the TX packet buffer utilization Faizal Rahim
2025-02-05 10:05 ` [PATCH iwl-next v2 4/9] igc: Set the RX packet buffer size for TSN mode Faizal Rahim
2025-02-05 10:05 ` [Intel-wired-lan] " Faizal Rahim
2025-02-05 10:05 ` [PATCH iwl-next v2 5/9] igc: Add support for frame preemption verification Faizal Rahim
2025-02-05 10:05 ` [Intel-wired-lan] " Faizal Rahim
2025-02-05 17:12 ` Vladimir Oltean
2025-02-05 17:12 ` [Intel-wired-lan] " Vladimir Oltean
2025-02-06 14:40 ` Abdul Rahim, Faizal
2025-02-06 14:40 ` [Intel-wired-lan] " Abdul Rahim, Faizal
2025-02-06 15:04 ` Vladimir Oltean
2025-02-06 15:04 ` [Intel-wired-lan] " Vladimir Oltean
2025-02-07 16:59 ` Abdul Rahim, Faizal
2025-02-07 16:59 ` [Intel-wired-lan] " Abdul Rahim, Faizal
2025-02-05 10:05 ` [PATCH iwl-next v2 6/9] igc: Add support to set tx-min-frag-size Faizal Rahim
2025-02-05 10:05 ` [Intel-wired-lan] " Faizal Rahim
2025-02-05 10:05 ` [PATCH iwl-next v2 7/9] igc: Add support for preemptible traffic class in taprio Faizal Rahim
2025-02-05 10:05 ` [Intel-wired-lan] " Faizal Rahim
2025-02-05 10:05 ` [PATCH iwl-next v2 8/9] igc: Add support to get MAC Merge data via ethtool Faizal Rahim
2025-02-05 10:05 ` [Intel-wired-lan] " Faizal Rahim
2025-02-05 10:05 ` [PATCH iwl-next v2 9/9] igc: Add support to get frame preemption statistics " Faizal Rahim
2025-02-05 10:05 ` [Intel-wired-lan] " Faizal Rahim
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