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net: stmmac: perserve TX and RX coalesce value during XDP setup

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commit 61da6ac715 upstream.

When XDP program is loaded, it is desirable that the previous TX and RX
coalesce values are not re-inited to its default value. This prevents
unnecessary re-configurig the coalesce values that were working fine
before.

Fixes: ac746c8520 ("net: stmmac: enhance XDP ZC driver level switching performance")
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Tested-by: Kurt Kanzenbach <kurt@linutronix.de>
Link: https://lore.kernel.org/r/20211124114019.3949125-1-boon.leong.ong@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ong Boon Leong 2021-11-24 19:40:19 +08:00 committed by Greg Kroah-Hartman
parent d666d33638
commit d61f3737c5
1 changed files with 3 additions and 2 deletions
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5
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@ -6579,6 +6579,9 @@ int stmmac_xdp_open(struct net_device *dev)
tx_q->tx_tail_addr = tx_q->dma_tx_phy;
stmmac_set_tx_tail_ptr(priv, priv->ioaddr,
tx_q->tx_tail_addr, chan);
hrtimer_init(&tx_q->txtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
tx_q->txtimer.function = stmmac_tx_timer;
}
/* Enable the MAC Rx/Tx */
@ -6587,8 +6590,6 @@ int stmmac_xdp_open(struct net_device *dev)
/* Start Rx & Tx DMA Channels */
stmmac_start_all_dma(priv);
stmmac_init_coalesce(priv);
ret = stmmac_request_irq(dev);
if (ret)
goto irq_error;