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qca_spi: Avoid skb_copy_expand in TX path

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The skb spare room needs to be expanded for SPI header, footer
and possible padding within the TX path. So announce the necessary
space in order to avoid expensive skb_copy_expand calls.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Wahren 2024-01-28 21:10:48 +01:00 committed by David S. Miller
parent 3c5e487808
commit 56f0b4f55b
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/qualcomm/qca_spi.c
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@ -878,6 +878,8 @@ qcaspi_netdev_setup(struct net_device *dev)
qcaspi_set_ethtool_ops(dev);
dev->watchdog_timeo = QCASPI_TX_TIMEOUT;
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
dev->needed_tailroom = ALIGN(QCAFRM_FOOTER_LEN + QCAFRM_MIN_LEN, 4);
dev->needed_headroom = ALIGN(QCAFRM_HEADER_LEN, 4);
dev->tx_queue_len = 100;
/* MTU range: 46 - 1500 */