target/linux/generic/pending-5.15/702-net-ethernet-mtk_eth_soc-enable-threaded-NAPI.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Mon, 21 Mar 2022 20:39:59 +0100
   3 Subject: [PATCH] net: ethernet: mtk_eth_soc: enable threaded NAPI
   4
   5 This can improve performance under load by ensuring that NAPI processing is
   6 not pinned on CPU 0.
   7
   8 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   9 ---
  10
  11 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
  12 +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
  13 @@ -2994,8 +2994,8 @@ static irqreturn_t mtk_handle_irq_rx(int
  14
  15         eth->rx_events++;
  16         if (likely(napi_schedule_prep(&eth->rx_napi))) {
  17 -               __napi_schedule(&eth->rx_napi);
  18                 mtk_rx_irq_disable(eth, eth->soc->txrx.rx_irq_done_mask);
  19 +               __napi_schedule(&eth->rx_napi);
  20         }
  21
  22         return IRQ_HANDLED;
  23 @@ -3007,8 +3007,8 @@ static irqreturn_t mtk_handle_irq_tx(int
  24
  25         eth->tx_events++;
  26         if (likely(napi_schedule_prep(&eth->tx_napi))) {
  27 -               __napi_schedule(&eth->tx_napi);
  28                 mtk_tx_irq_disable(eth, MTK_TX_DONE_INT);
  29 +               __napi_schedule(&eth->tx_napi);
  30         }
  31
  32         return IRQ_HANDLED;
  33 @@ -4675,6 +4675,8 @@ static int mtk_probe(struct platform_dev
  34          * for NAPI to work
  35          */
  36         init_dummy_netdev(&eth->dummy_dev);
  37 +       eth->dummy_dev.threaded = 1;
  38 +       strcpy(eth->dummy_dev.name, "mtk_eth");
  39         netif_napi_add(&eth->dummy_dev, &eth->tx_napi, mtk_napi_tx,
  40                        NAPI_POLL_WEIGHT);
  41         netif_napi_add(&eth->dummy_dev, &eth->rx_napi, mtk_napi_rx,