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bcm4908: backport upstream BQL support for bcm4908_enet

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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit ae57770c95)
(cherry picked from commit 6198eb3e64)
This commit is contained in:
Rafał Miłecki 2022-10-27 22:33:14 +02:00
parent 0ff3adfa11
commit 84b3eafe39
1 changed files with 45 additions and 0 deletions
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45
target/linux/bcm4908/patches-5.10/079-v6.2-0002-net-broadcom-bcm4908_enet-report-queued-and-transmit.patch Normal file
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@ -0,0 +1,45 @@
From 471ef777ec79baadc5cd9773d08f95f49cf5e2b1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Mon, 31 Oct 2022 11:48:56 +0100
Subject: [PATCH] net: broadcom: bcm4908_enet: report queued and transmitted
bytes
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This allows BQL to operate avoiding buffer bloat and reducing latency.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Link: https://lore.kernel.org/r/20221031104856.32388-1-zajec5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
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
@@ -504,6 +504,7 @@ 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);
@@ -563,6 +564,8 @@ 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);
@@ -670,6 +673,7 @@ 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;