mirror of
https://github.com/coolsnowwolf/lede.git
synced 2025-07-05 01:47:06 +08:00
86bc29e4a8
[mac80211] ca5ee6e mac80211: Fix potential endless loop 2c14710 mac80211: add more AQL fixes/improvements 91fb3ce mac80211: remove an obsolete patch that is no longer doing anything useful acf1733 mac80211: add preliminary support for enabling 802.11ax in config d717343 mac80211: update encap offload patches to the latest version 673062f mac80211: allow bigger A-MSDU sizes in VHT, even if HT is limited caf7277 mac80211: do not allow bigger VHT MPDUs than the hardware supports cd36c0d mac80211: select the first available channel for 5GHz interfaces 1c6d456 mac80211: fix regression in station connection monitor optimization 4bd7689 mac80211: update sta connection monitor regression fix [target] Sync: at91, ath25, ath79, lantiq, mediatek, mvebu.
45 lines
1.3 KiB
Diff
45 lines
1.3 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
|
|
Date: Thu, 27 Aug 2020 09:24:25 +0200
|
|
Subject: [PATCH] net: ethernet: mtk_eth_soc: only read the full rx
|
|
descriptor if DMA is done
|
|
|
|
Uncached memory access is expensive, and there is no need to access all
|
|
descriptor words if we can't process them anyway
|
|
|
|
Signed-off-by: Felix Fietkau <nbd@nbd.name>
|
|
---
|
|
|
|
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
|
|
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
|
|
@@ -772,13 +772,18 @@ static inline int mtk_max_buf_size(int f
|
|
return buf_size;
|
|
}
|
|
|
|
-static inline void mtk_rx_get_desc(struct mtk_rx_dma *rxd,
|
|
+static inline bool mtk_rx_get_desc(struct mtk_rx_dma *rxd,
|
|
struct mtk_rx_dma *dma_rxd)
|
|
{
|
|
- rxd->rxd1 = READ_ONCE(dma_rxd->rxd1);
|
|
rxd->rxd2 = READ_ONCE(dma_rxd->rxd2);
|
|
+ if (!(rxd->rxd2 & RX_DMA_DONE))
|
|
+ return false;
|
|
+
|
|
+ rxd->rxd1 = READ_ONCE(dma_rxd->rxd1);
|
|
rxd->rxd3 = READ_ONCE(dma_rxd->rxd3);
|
|
rxd->rxd4 = READ_ONCE(dma_rxd->rxd4);
|
|
+
|
|
+ return true;
|
|
}
|
|
|
|
/* the qdma core needs scratch memory to be setup */
|
|
@@ -1250,8 +1255,7 @@ static int mtk_poll_rx(struct napi_struc
|
|
rxd = &ring->dma[idx];
|
|
data = ring->data[idx];
|
|
|
|
- mtk_rx_get_desc(&trxd, rxd);
|
|
- if (!(trxd.rxd2 & RX_DMA_DONE))
|
|
+ if (!mtk_rx_get_desc(&trxd, rxd))
|
|
break;
|
|
|
|
/* find out which mac the packet come from. values start at 1 */
|