[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20231218232639.33327-9-wahrenst@gmx.net>
Date: Tue, 19 Dec 2023 00:26:35 +0100
From: Stefan Wahren <wahrenst@....net>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
Stefan Wahren <wahrenst@....net>
Subject: [PATCH V2 08/12 net-next] qca_spi: Improve calculation of RX buffer size
There are two points with the calculation of RX buffer size which are
not optimal:
1. mtu is a mutual parameter, but actually we need the maximum possible
MTU. So better use the define directly.
2. This magic number 4 represent the hardware generated frame length
which is specific to SPI. We better replace this with the suitable
define.
There is no functional change.
Signed-off-by: Stefan Wahren <wahrenst@....net>
---
drivers/net/ethernet/qualcomm/qca_spi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
index 80182f8a4a50..6d2859aad921 100644
--- a/drivers/net/ethernet/qualcomm/qca_spi.c
+++ b/drivers/net/ethernet/qualcomm/qca_spi.c
@@ -813,8 +813,8 @@ qcaspi_netdev_init(struct net_device *dev)
qca->clkspeed = qcaspi_clkspeed;
qca->burst_len = qcaspi_burst_len;
qca->spi_thread = NULL;
- qca->buffer_size = (dev->mtu + VLAN_ETH_HLEN + QCAFRM_HEADER_LEN +
- QCAFRM_FOOTER_LEN + 4) * QCASPI_RX_MAX_FRAMES;
+ qca->buffer_size = (QCAFRM_MAX_MTU + VLAN_ETH_HLEN + QCAFRM_HEADER_LEN +
+ QCAFRM_FOOTER_LEN + QCASPI_HW_PKT_LEN) * QCASPI_RX_MAX_FRAMES;
memset(&qca->stats, 0, sizeof(struct qcaspi_stats));
--
2.34.1
Powered by blists - more mailing lists