[PATCH V4 04/15 net-next] qca_spi: Avoid skb_copy_expand in TX path
From: Stefan Wahren <wahrenst@gmx.net>
Date: 2024-01-28 20:11:35
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Subsystem:
networking drivers, qualcomm atheros qca7k ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Stefan Wahren, Linus Torvalds
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> --- drivers/net/ethernet/qualcomm/qca_spi.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
index 3f7e38a11ba0..5fabb40cca05 100644
--- a/drivers/net/ethernet/qualcomm/qca_spi.c
+++ b/drivers/net/ethernet/qualcomm/qca_spi.c@@ -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 */ --
2.34.1