Commit f8e18abf183d for kernel

commit f8e18abf183dbd636a8725532c7f5aa58957de84
Author: Larysa Zaremba <larysa.zaremba@intel.com>
Date:   Thu Mar 5 12:12:49 2026 +0100

    net: enetc: use truesize as XDP RxQ info frag_size

    The only user of frag_size field in XDP RxQ info is
    bpf_xdp_frags_increase_tail(). It clearly expects truesize instead of DMA
    write size. Different assumptions in enetc driver configuration lead to
    negative tailroom.

    Set frag_size to the same value as frame_sz.

    Fixes: 2768b2e2f7d2 ("net: enetc: register XDP RX queues with frag_size")
    Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
    Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
    Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
    Link: https://patch.msgid.link/20260305111253.2317394-9-larysa.zaremba@intel.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
index 70768392912c..a146ceaf2ed6 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc.c
@@ -3467,7 +3467,7 @@ static int enetc_int_vector_init(struct enetc_ndev_priv *priv, int i,
 	priv->rx_ring[i] = bdr;

 	err = __xdp_rxq_info_reg(&bdr->xdp.rxq, priv->ndev, i, 0,
-				 ENETC_RXB_DMA_SIZE_XDP);
+				 ENETC_RXB_TRUESIZE);
 	if (err)
 		goto free_vector;