Messages in this thread Patch in this message | | | From | Stefan Wahren <> | Subject | [PATCH V4 09/15 net-next] qca_spi: Improve calculation of RX buffer size | Date | Sun, 28 Jan 2024 21:10:53 +0100 |
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There are two points with the calculation of RX buffer size which are not optimal: 1. dev->mtu is a mutual parameter and it's currently initialized with QCAFRM_MAX_MTU. But for RX buffer size calculation we always 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@gmx.net> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> --- 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 c0f6bd3d331a..b35fabcd488b 100644 --- a/drivers/net/ethernet/qualcomm/qca_spi.c +++ b/drivers/net/ethernet/qualcomm/qca_spi.c @@ -828,8 +828,8 @@ 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
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