openwrt/target/linux/bcm4908/patches-5.15/072-v6.2-0002-net-broadcom-bcm4908_enet-report-queued-and-transmit.patch

From 471ef777ec79baadc5cd9773d08f95f49cf5e2b1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <[email protected]>
Date: Mon, 31 Oct 2022 11:48:56 +0100
Subject: [PATCH] net: broadcom: bcm4908_enet: report queued and transmitted
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This allows BQL to operate avoiding buffer bloat and reducing latency.

Signed-off-by: Rafał Miłecki <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
---
 drivers/net/ethernet/broadcom/bcm4908_enet.c | 4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/net/ethernet/broadcom/bcm4908_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c
@@ -505,6 +505,7 @@ static int bcm4908_enet_stop(struct net_
 	netif_carrier_off(netdev);
 	napi_disable(&rx_ring->napi);
 	napi_disable(&tx_ring->napi);
+	netdev_reset_queue(netdev);
 
 	bcm4908_enet_dma_rx_ring_disable(enet, &enet->rx_ring);
 	bcm4908_enet_dma_tx_ring_disable(enet, &enet->tx_ring);
@@ -564,6 +565,8 @@ static int bcm4908_enet_start_xmit(struc
 	if (ring->write_idx + 1 == ring->length - 1)
 		tmp |= DMA_CTL_STATUS_WRAP;
 
+	netdev_sent_queue(enet->netdev, skb->len);
+
 	buf_desc->addr = cpu_to_le32((uint32_t)slot->dma_addr);
 	buf_desc->ctl = cpu_to_le32(tmp);
 
@@ -671,6 +674,7 @@ static int bcm4908_enet_poll_tx(struct n
 			tx_ring->read_idx = 0;
 	}
 
+	netdev_completed_queue(enet->netdev, handled, bytes);
 	enet->netdev->stats.tx_packets += handled;
 	enet->netdev->stats.tx_bytes += bytes;