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authorFelix Fietkau <nbd@nbd.name>2020-08-27 06:39:48 +0200
committerFelix Fietkau <nbd@nbd.name>2020-09-01 17:01:56 +0200
commitb5d425af237dc03327078d6b9be178a38b5f8723 (patch)
tree42448318e13eef9ff603b01ebc3088a32ce617ec /target/linux/ramips
parent6541028598b4a1079ee6182c5b50d6bcd9e21002 (diff)
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mediatek/ramips: unify ethernet driver fixes and add performance optimizations
Increase DMA burst size and tx ring size and optimize tx processing Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'target/linux/ramips')
-rw-r--r--target/linux/ramips/patches-5.4/0400-net-ethernet-mediatek-use-napi_consume_skb.patch72
-rw-r--r--target/linux/ramips/patches-5.4/0401-net-ethernet-mediatek-significantly-reduce-mdio-bus-.patch26
-rw-r--r--target/linux/ramips/patches-5.4/401-net-ethernet-mediatek-support-net-labels.patch4
3 files changed, 2 insertions, 100 deletions
diff --git a/target/linux/ramips/patches-5.4/0400-net-ethernet-mediatek-use-napi_consume_skb.patch b/target/linux/ramips/patches-5.4/0400-net-ethernet-mediatek-use-napi_consume_skb.patch
deleted file mode 100644
index a31100642b..0000000000
--- a/target/linux/ramips/patches-5.4/0400-net-ethernet-mediatek-use-napi_consume_skb.patch
+++ /dev/null
@@ -1,72 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-Date: Mon, 8 Jun 2020 17:01:12 +0200
-Subject: [PATCH] net: ethernet: mediatek: use napi_consume_skb
-
-Should improve performance, since it can use bulk free
-
-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
-@@ -853,7 +853,8 @@ static int txd_to_idx(struct mtk_tx_ring
- return ((void *)dma - (void *)ring->dma) / sizeof(*dma);
- }
-
--static void mtk_tx_unmap(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf)
-+static void mtk_tx_unmap(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf,
-+ bool napi)
- {
- if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) {
- if (tx_buf->flags & MTK_TX_FLAGS_SINGLE0) {
-@@ -885,8 +886,12 @@ static void mtk_tx_unmap(struct mtk_eth
-
- tx_buf->flags = 0;
- if (tx_buf->skb &&
-- (tx_buf->skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC))
-- dev_kfree_skb_any(tx_buf->skb);
-+ (tx_buf->skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC)) {
-+ if (napi)
-+ napi_consume_skb(tx_buf->skb, napi);
-+ else
-+ dev_kfree_skb_any(tx_buf->skb);
-+ }
- tx_buf->skb = NULL;
- }
-
-@@ -1064,7 +1069,7 @@ err_dma:
- tx_buf = mtk_desc_to_tx_buf(ring, itxd);
-
- /* unmap dma */
-- mtk_tx_unmap(eth, tx_buf);
-+ mtk_tx_unmap(eth, tx_buf, false);
-
- itxd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU;
- if (!MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA))
-@@ -1382,7 +1387,7 @@ static int mtk_poll_tx_qdma(struct mtk_e
- done[mac]++;
- budget--;
- }
-- mtk_tx_unmap(eth, tx_buf);
-+ mtk_tx_unmap(eth, tx_buf, true);
-
- ring->last_free = desc;
- atomic_inc(&ring->free_count);
-@@ -1419,7 +1424,7 @@ static int mtk_poll_tx_pdma(struct mtk_e
- budget--;
- }
-
-- mtk_tx_unmap(eth, tx_buf);
-+ mtk_tx_unmap(eth, tx_buf, true);
-
- desc = &ring->dma[cpu];
- ring->last_free = desc;
-@@ -1621,7 +1626,7 @@ static void mtk_tx_clean(struct mtk_eth
-
- if (ring->buf) {
- for (i = 0; i < MTK_DMA_SIZE; i++)
-- mtk_tx_unmap(eth, &ring->buf[i]);
-+ mtk_tx_unmap(eth, &ring->buf[i], false);
- kfree(ring->buf);
- ring->buf = NULL;
- }
diff --git a/target/linux/ramips/patches-5.4/0401-net-ethernet-mediatek-significantly-reduce-mdio-bus-.patch b/target/linux/ramips/patches-5.4/0401-net-ethernet-mediatek-significantly-reduce-mdio-bus-.patch
deleted file mode 100644
index c2ba9964e9..0000000000
--- a/target/linux/ramips/patches-5.4/0401-net-ethernet-mediatek-significantly-reduce-mdio-bus-.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-Date: Mon, 8 Jun 2020 17:02:39 +0200
-Subject: [PATCH] net: ethernet: mediatek: significantly reduce mdio bus
- access latency
-
-usleep_range often ends up sleeping much longer than the 10-20us provided
-as a range here. This causes significant latency in mdio bus acceses,
-which easily adds multiple seconds to the boot time on MT7621 when polling
-DSA slave ports.
-Use cond_resched instead of usleep_range, since the MDIO access does not
-take much time
-
-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
-@@ -85,7 +85,7 @@ static int mtk_mdio_busy_wait(struct mtk
- return 0;
- if (time_after(jiffies, t_start + PHY_IAC_TIMEOUT))
- break;
-- usleep_range(10, 20);
-+ cond_resched();
- }
-
- dev_err(eth->dev, "mdio: MDIO timeout\n");
diff --git a/target/linux/ramips/patches-5.4/401-net-ethernet-mediatek-support-net-labels.patch b/target/linux/ramips/patches-5.4/401-net-ethernet-mediatek-support-net-labels.patch
index 3332587671..66f1b12618 100644
--- a/target/linux/ramips/patches-5.4/401-net-ethernet-mediatek-support-net-labels.patch
+++ b/target/linux/ramips/patches-5.4/401-net-ethernet-mediatek-support-net-labels.patch
@@ -14,7 +14,7 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -2793,6 +2793,7 @@ static const struct net_device_ops mtk_n
+@@ -2856,6 +2856,7 @@ static const struct net_device_ops mtk_n
static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
{
@@ -22,7 +22,7 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
const __be32 *_id = of_get_property(np, "reg", NULL);
struct phylink *phylink;
int phy_mode, id, err;
-@@ -2885,6 +2886,9 @@ static int mtk_add_mac(struct mtk_eth *e
+@@ -2948,6 +2949,9 @@ static int mtk_add_mac(struct mtk_eth *e
eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN;