6.14-stable review patch. If anyone has any objections, please let me know.
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From: Vladimir Oltean vladimir.oltean@nxp.com
[ Upstream commit 2768b2e2f7d25ae8984ebdcde8ec1014b6fdcd89 ]
At the time when bpf_xdp_adjust_tail() gained support for non-linear buffers, ENETC was already generating this kind of geometry on RX, due to its use of 2K half page buffers. Frames larger than 1472 bytes (without FCS) are stored as multi-buffer, presenting a need for multi buffer support to work properly even in standard MTU circumstances.
Allow bpf_xdp_frags_increase_tail() to know the allocation size of paged data, so it can safely permit growing the tailroom of the buffer from XDP programs.
Fixes: bf25146a5595 ("bpf: add frags support to the bpf_xdp_adjust_tail() API") Signed-off-by: Vladimir Oltean vladimir.oltean@nxp.com Reviewed-by: Wei Fang wei.fang@nxp.com Link: https://patch.msgid.link/20250417120005.3288549-2-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/freescale/enetc/enetc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c index 2106861463e40..9b333254c73ec 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.c +++ b/drivers/net/ethernet/freescale/enetc/enetc.c @@ -3362,7 +3362,8 @@ static int enetc_int_vector_init(struct enetc_ndev_priv *priv, int i, bdr->buffer_offset = ENETC_RXB_PAD; priv->rx_ring[i] = bdr;
- err = xdp_rxq_info_reg(&bdr->xdp.rxq, priv->ndev, i, 0); + err = __xdp_rxq_info_reg(&bdr->xdp.rxq, priv->ndev, i, 0, + ENETC_RXB_DMA_SIZE_XDP); if (err) goto free_vector;