From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Igor Pecovnik Date: Wed, 21 Jul 2021 20:59:39 +0000 Subject: Disable MTU validation This patch reverts: https://github.com/torvalds/linux/commit/eaf4fac478077d4ed57cbca2c044c4b58a96bd98 It works around following issues: - no way to change MTU (tx_fifo_size is reported as 0 for Rockchip's dwmac) Signed-off-by: Piotr Szczepanik Signed-off-by: Igor Pecovnik --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 12 ---------- 1 file changed, 12 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 5801f4d50f95..6f9b14164fc8 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -5676,27 +5676,15 @@ static void stmmac_set_rx_mode(struct net_device *dev) static int stmmac_change_mtu(struct net_device *dev, int new_mtu) { struct stmmac_priv *priv = netdev_priv(dev); - int txfifosz = priv->plat->tx_fifo_size; struct stmmac_dma_conf *dma_conf; const int mtu = new_mtu; int ret; - if (txfifosz == 0) - txfifosz = priv->dma_cap.tx_fifo_size; - - txfifosz /= priv->plat->tx_queues_to_use; - if (stmmac_xdp_is_enabled(priv) && new_mtu > ETH_DATA_LEN) { netdev_dbg(priv->dev, "Jumbo frames not supported for XDP\n"); return -EINVAL; } - new_mtu = STMMAC_ALIGN(new_mtu); - - /* If condition true, FIFO is too small or MTU too large */ - if ((txfifosz < new_mtu) || (new_mtu > BUF_SIZE_16KiB)) - return -EINVAL; - if (netif_running(dev)) { netdev_dbg(priv->dev, "restarting interface to change its MTU\n"); /* Try to allocate the new DMA conf with the new mtu */ -- Armbian