On Tue, Nov 11, 2025 at 03:45:22PM +0530, Meghana Malladi wrote:
...
> diff --git a/drivers/net/ethernet/ti/icssg/icssg_common.c
> b/drivers/net/ethernet/ti/icssg/icssg_common.c
...
> +static int prueth_dma_rx_push_mapped_zc(struct prueth_emac *emac,
> + struct prueth_rx_chn *rx_chn,
> + struct xdp_buff *xdp)
> +{
> + struct net_device *ndev = emac->ndev;
> + struct cppi5_host_desc_t *desc_rx;
> + struct prueth_swdata *swdata;
> + dma_addr_t desc_dma;
> + dma_addr_t buf_dma;
> + int buf_len;
> +
> + buf_dma = xsk_buff_xdp_get_dma(xdp);
> + desc_rx = k3_cppi_desc_pool_alloc(rx_chn->desc_pool);
> + if (!desc_rx) {
> + netdev_err(ndev, "rx push: failed to allocate descriptor\n");
> + return -ENOMEM;
> + }
> + desc_dma = k3_cppi_desc_pool_virt2dma(rx_chn->desc_pool, desc_rx);
> +
> + cppi5_hdesc_init(desc_rx, CPPI5_INFO0_HDESC_EPIB_PRESENT,
> + PRUETH_NAV_PS_DATA_SIZE);
> + k3_udma_glue_rx_dma_to_cppi5_addr(rx_chn->rx_chn, &buf_dma);
> + buf_len = xsk_pool_get_rx_frame_size(rx_chn->xsk_pool);
> + cppi5_hdesc_attach_buf(desc_rx, buf_dma, buf_len, buf_dma, buf_len);
> + swdata = cppi5_hdesc_get_swdata(desc_rx);
> + swdata->type = PRUETH_SWDATA_XSK;
> + swdata->data.xdp = xdp;
> +
> + return k3_udma_glue_push_rx_chn(rx_chn->rx_chn, PRUETH_RX_FLOW_DATA,
> + desc_rx, desc_dma);
> +
> + return 0;
nit: The line above is dead code.
> +}
...
