[PATCH] net: stmmac: Disable checksum insertion for XDP frame TX
flat view
COOLING4d
From: Jisheng Zhang <jszhang@kernel.org>
Date: 2026-09-29 12:30:20
Also in:
linux-arm-kernel, lkml
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Linus Torvalds
stmmac enables TX checksum insertion for XDP frames whenever the queue
supports it. XDP frames carry no TX checksum offload request, so this
can overwrite a checksum already present in the packet.
Pass false to stmmac_prepare_tx_desc() when transmitting an XDP frame
so that the packet is sent with its checksum fields unchanged.
Fixes: be8b38a722e6 ("net: stmmac: Add support for XDP_TX action")
Fixes: 8b278a5b69a2 ("net: stmmac: Add support for XDP_REDIRECT action")
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 24656b35350b..8fe75b00974f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c@@ -5184,7 +5184,6 @@ static int stmmac_xdp_xmit_xdpf(struct stmmac_priv *priv, int queue, { struct stmmac_txq_stats *txq_stats = &priv->xstats.txq_stats[queue]; struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue]; - bool csum = !priv->plat->tx_queues_cfg[queue].coe_unsupported; unsigned int entry = tx_q->cur_tx; enum stmmac_txbuf_type buf_type; struct dma_desc *tx_desc;
@@ -5229,7 +5228,7 @@ static int stmmac_xdp_xmit_xdpf(struct stmmac_priv *priv, int queue, stmmac_set_desc_addr(priv, tx_desc, dma_addr); stmmac_prepare_tx_desc(priv, tx_desc, 1, xdpf->len, - csum, priv->descriptor_mode, true, true, + false, priv->descriptor_mode, true, true, xdpf->len); tx_q->tx_count_frames++;
--
2.53.0