Fixes logic that leads to this error when booting mt7621 and other
devices that use the mediatek ethernet driver:
[ 23.144378] mtk_soc_eth 1e100000.ethernet: PPE table busy
The rest are mostly moved from pending-5.10 to backport-5.10 with a
couple of cleanups and improvements from upstream.
Refresh patches.
Links:
https://git.kernel.org/netdev/net-next/c/c5d66587b890
https://git.kernel.org/netdev/net-next/c/3f57d8c40fea
https://git.kernel.org/netdev/net-next/c/5196c4178549
https://git.kernel.org/netdev/net-next/c/787082ab9f7b
https://git.kernel.org/netdev/net-next/c/c30c4a827390
https://git.kernel.org/netdev/net-next/c/3630d519d7c3
https://git.kernel.org/netdev/net-next/c/16ef670789b2
https://git.kernel.org/netdev/net-next/c/59555a8d0dd3
https://git.kernel.org/netdev/net-next/c/6b4423b258b9
https://git.kernel.org/netdev/net-next/c/e9229ffd550b
https://git.kernel.org/netdev/net-next/c/4e6bf609569c
https://git.kernel.org/netdev/net-next/c/816ac3e6e67b
https://git.kernel.org/netdev/net-next/c/16769a8923fa
https://git.kernel.org/netdev/net-next/c/db2c7b353db3
https://git.kernel.org/netdev/net-next/c/fa817272c37e
https://git.kernel.org/netdev/net-next/c/3bc8e0aff23b
Fixes: f07fe36f22fc ("kernel: update flow offload patches to upstream version")
Cc: Felix Fietkau <n...@nbd.name>
Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
---
...rnet-mediatek-ppe-fix-busy-wait-loop.patch | 72 ++++++++++++
...net-mtk_eth_soc-fix-RX-VLAN-offload.patch} | 17 ++-
...eth_soc-unmap-RX-data-before-callin.patch} | 26 ++---
...et-mtk_eth_soc-fix-build_skb-cleanup.patch | 38 ++++++
...et-mtk_eth_soc-use-napi_consume_skb.patch} | 13 ++-
...eth_soc-reduce-MDIO-bus-access-late.patch} | 10 +-
...eth_soc-remove-unnecessary-TX-queue.patch} | 16 ++-
...eth_soc-use-larger-burst-size-for-Q.patch} | 13 ++-
...mtk_eth_soc-increase-DMA-ring-sizes.patch} | 11 +-
...eth_soc-implement-dynamic-interrupt.patch} | 58 ++++++---
...eth_soc-cache-HW-pointer-of-last-fr.patch} | 24 ++--
...eth_soc-only-read-the-full-RX-descr.patch} | 11 +-
...eth_soc-reduce-unnecessary-interrup.patch} | 12 +-
...et-mtk_eth_soc-rework-NAPI-callbacks.patch | 110 ++++++++++++++++++
...eth_soc-set-PPE-flow-hash-as-skb-ha.patch} | 16 ++-
..._eth_soc-use-iopoll.h-macro-for-DMA-.patch | 71 +++++++++++
...ethernet-mediatek-support-net-labels.patch | 4 +-
17 files changed, 445 insertions(+), 77 deletions(-)
create mode 100644
target/linux/generic/backport-5.10/610-v5.13-35-net-ethernet-mediatek-ppe-fix-busy-wait-loop.patch
rename
target/linux/generic/{pending-5.10/770-02-net-ethernet-mtk_eth_soc-fix-rx-vlan-offload.patch
=>
backport-5.10/610-v5.13-37-net-ethernet-mtk_eth_soc-fix-RX-VLAN-offload.patch}
(56%)
rename
target/linux/generic/{pending-5.10/770-10-net-ethernet-mtk_eth_soc-unmap-rx-data-before-callin.patch
=>
backport-5.10/610-v5.13-38-net-ethernet-mtk_eth_soc-unmap-RX-data-before-callin.patch}
(56%)
create mode 100644
target/linux/generic/backport-5.10/610-v5.13-39-net-ethernet-mtk_eth_soc-fix-build_skb-cleanup.patch
rename
target/linux/generic/{pending-5.10/770-00-net-ethernet-mtk_eth_soc-use-napi_consume_skb.patch
=>
backport-5.10/610-v5.13-40-net-ethernet-mtk_eth_soc-use-napi_consume_skb.patch}
(77%)
rename
target/linux/generic/{pending-5.10/770-01-net-ethernet-mtk_eth_soc-significantly-reduce-mdio-b.patch
=>
backport-5.10/610-v5.13-41-net-ethernet-mtk_eth_soc-reduce-MDIO-bus-access-late.patch}
(65%)
rename
target/linux/generic/{pending-5.10/770-03-net-ethernet-mtk_eth_soc-fix-unnecessary-tx-queue-st.patch
=>
backport-5.10/610-v5.13-42-net-ethernet-mtk_eth_soc-remove-unnecessary-TX-queue.patch}
(68%)
rename
target/linux/generic/{pending-5.10/770-04-net-ethernet-mtk_eth_soc-use-larger-burst-size-for-q.patch
=>
backport-5.10/610-v5.13-43-net-ethernet-mtk_eth_soc-use-larger-burst-size-for-Q.patch}
(67%)
rename
target/linux/generic/{pending-5.10/770-05-net-ethernet-mtk_eth_soc-increase-DMA-ring-sizes.patch
=>
backport-5.10/610-v5.13-44-net-ethernet-mtk_eth_soc-increase-DMA-ring-sizes.patch}
(62%)
rename
target/linux/generic/{pending-5.10/770-06-net-ethernet-mtk_eth_soc-implement-dynamic-interrupt.patch
=>
backport-5.10/610-v5.13-45-net-ethernet-mtk_eth_soc-implement-dynamic-interrupt.patch}
(76%)
rename
target/linux/generic/{pending-5.10/770-08-net-ethernet-mtk_eth_soc-cache-hardware-pointer-of-l.patch
=>
backport-5.10/610-v5.13-46-net-ethernet-mtk_eth_soc-cache-HW-pointer-of-last-fr.patch}
(70%)
rename
target/linux/generic/{pending-5.10/770-09-net-ethernet-mtk_eth_soc-only-read-the-full-rx-descr.patch
=>
backport-5.10/610-v5.13-47-net-ethernet-mtk_eth_soc-only-read-the-full-RX-descr.patch}
(77%)
rename
target/linux/generic/{pending-5.10/770-11-net-ethernet-mtk_eth_soc-avoid-rearming-interrupt-if.patch
=>
backport-5.10/610-v5.13-48-net-ethernet-mtk_eth_soc-reduce-unnecessary-interrup.patch}
(61%)
create mode 100644
target/linux/generic/backport-5.10/610-v5.13-49-net-ethernet-mtk_eth_soc-rework-NAPI-callbacks.patch
rename
target/linux/generic/{pending-5.10/770-14-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch
=>
backport-5.10/610-v5.13-50-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch}
(68%)
create mode 100644
target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch
diff --git
a/target/linux/generic/backport-5.10/610-v5.13-35-net-ethernet-mediatek-ppe-fix-busy-wait-loop.patch
b/target/linux/generic/backport-5.10/610-v5.13-35-net-ethernet-mediatek-ppe-fix-busy-wait-loop.patch
new file mode 100644
index 000000000000..66cd053cd1af
--- /dev/null
+++
b/target/linux/generic/backport-5.10/610-v5.13-35-net-ethernet-mediatek-ppe-fix-busy-wait-loop.patch
@@ -0,0 +1,72 @@
+From c5d66587b8900201e1530b7c18d41e87bd5812f4 Mon Sep 17 00:00:00 2001
+From: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Date: Thu, 15 Apr 2021 17:37:48 -0700
+Subject: [PATCH] net: ethernet: mediatek: ppe: fix busy wait loop
+
+The intention is for the loop to timeout if the body does not succeed.
+The current logic calls time_is_before_jiffies(timeout) which is false
+until after the timeout, so the loop body never executes.
+
+Fix by using readl_poll_timeout as a more standard and less error-prone
+solution.
+
+Fixes: ba37b7caf1ed ("net: ethernet: mtk_eth_soc: add support for initializing
the PPE")
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Cc: Felix Fietkau <n...@nbd.name>
+Reviewed-by: Andrew Lunn <and...@lunn.ch>
+Signed-off-by: David S. Miller <da...@davemloft.net>
+---
+ drivers/net/ethernet/mediatek/mtk_ppe.c | 20 +++++++++-----------
+ drivers/net/ethernet/mediatek/mtk_ppe.h | 1 +
+ 2 files changed, 10 insertions(+), 11 deletions(-)
+
+--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
++++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
+@@ -2,9 +2,8 @@
+ /* Copyright (C) 2020 Felix Fietkau <n...@nbd.name> */
+
+ #include <linux/kernel.h>
+-#include <linux/jiffies.h>
+-#include <linux/delay.h>
+ #include <linux/io.h>
++#include <linux/iopoll.h>
+ #include <linux/etherdevice.h>
+ #include <linux/platform_device.h>
+ #include "mtk_ppe.h"
+@@ -44,18 +43,17 @@ static u32 ppe_clear(struct mtk_ppe *ppe
+
+ static int mtk_ppe_wait_busy(struct mtk_ppe *ppe)
+ {
+- unsigned long timeout = jiffies + HZ;
+-
+- while (time_is_before_jiffies(timeout)) {
+- if (!(ppe_r32(ppe, MTK_PPE_GLO_CFG) & MTK_PPE_GLO_CFG_BUSY))
+- return 0;
++ int ret;
++ u32 val;
+
+- usleep_range(10, 20);
+- }
++ ret = readl_poll_timeout(ppe->base + MTK_PPE_GLO_CFG, val,
++ !(val & MTK_PPE_GLO_CFG_BUSY),
++ 20, MTK_PPE_WAIT_TIMEOUT_US);
+
+- dev_err(ppe->dev, "PPE table busy");
++ if (ret)
++ dev_err(ppe->dev, "PPE table busy");
+
+- return -ETIMEDOUT;
++ return ret;
+ }
+
+ static void mtk_ppe_cache_clear(struct mtk_ppe *ppe)
+--- a/drivers/net/ethernet/mediatek/mtk_ppe.h
++++ b/drivers/net/ethernet/mediatek/mtk_ppe.h
+@@ -12,6 +12,7 @@
+ #define MTK_PPE_ENTRIES_SHIFT 3
+ #define MTK_PPE_ENTRIES (1024 << MTK_PPE_ENTRIES_SHIFT)
+ #define MTK_PPE_HASH_MASK (MTK_PPE_ENTRIES - 1)
++#define MTK_PPE_WAIT_TIMEOUT_US 1000000
+
+ #define MTK_FOE_IB1_UNBIND_TIMESTAMP GENMASK(7, 0)
+ #define MTK_FOE_IB1_UNBIND_PACKETS GENMASK(23, 8)
diff --git
a/target/linux/generic/pending-5.10/770-02-net-ethernet-mtk_eth_soc-fix-rx-vlan-offload.patch
b/target/linux/generic/backport-5.10/610-v5.13-37-net-ethernet-mtk_eth_soc-fix-RX-VLAN-offload.patch
similarity index 56%
rename from
target/linux/generic/pending-5.10/770-02-net-ethernet-mtk_eth_soc-fix-rx-vlan-offload.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-37-net-ethernet-mtk_eth_soc-fix-RX-VLAN-offload.patch
index 9357e79c88dc..7020fd714303 100644
---
a/target/linux/generic/pending-5.10/770-02-net-ethernet-mtk_eth_soc-fix-rx-vlan-offload.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-37-net-ethernet-mtk_eth_soc-fix-RX-VLAN-offload.patch
@@ -1,16 +1,23 @@
+From 3f57d8c40fea9b20543cab4da12f4680d2ef182c Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Wed, 26 Aug 2020 16:52:12 +0200
-Subject: [PATCH] net: ethernet: mtk_eth_soc: fix rx vlan offload
+Date: Thu, 22 Apr 2021 22:20:54 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: fix RX VLAN offload
-The VLAN ID in the rx descriptor is only valid if the RX_DMA_VID bit is set
-Fixes frames wrongly marked with VLAN tags
+The VLAN ID in the rx descriptor is only valid if the RX_DMA_VTAG bit is
+set. Fixes frames wrongly marked with VLAN tags.
Signed-off-by: Felix Fietkau <n...@nbd.name>
+[Ilya: fix commit message]
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
+ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 1 +
+ 2 files changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -1324,7 +1324,7 @@ static int mtk_poll_rx(struct napi_struc
+@@ -1319,7 +1319,7 @@ static int mtk_poll_rx(struct napi_struc
skb->protocol = eth_type_trans(skb, netdev);
if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
diff --git
a/target/linux/generic/pending-5.10/770-10-net-ethernet-mtk_eth_soc-unmap-rx-data-before-callin.patch
b/target/linux/generic/backport-5.10/610-v5.13-38-net-ethernet-mtk_eth_soc-unmap-RX-data-before-callin.patch
similarity index 56%
rename from
target/linux/generic/pending-5.10/770-10-net-ethernet-mtk_eth_soc-unmap-rx-data-before-callin.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-38-net-ethernet-mtk_eth_soc-unmap-RX-data-before-callin.patch
index 4a19fa1164fb..ff88c9e84baf 100644
---
a/target/linux/generic/pending-5.10/770-10-net-ethernet-mtk_eth_soc-unmap-rx-data-before-callin.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-38-net-ethernet-mtk_eth_soc-unmap-RX-data-before-callin.patch
@@ -1,17 +1,23 @@
+From 5196c417854942e218a59ec87bf7d414b3bd581e Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Thu, 27 Aug 2020 09:44:43 +0200
-Subject: [PATCH] net: ethernet: mtk_eth_soc: unmap rx data before calling
+Date: Thu, 22 Apr 2021 22:20:55 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: unmap RX data before calling
build_skb
Since build_skb accesses the data area (for initializing shinfo), dma unmap
needs to happen before that call
Signed-off-by: Felix Fietkau <n...@nbd.name>
+[Ilya: split build_skb cleanup fix into a separate commit]
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -1297,17 +1297,18 @@ static int mtk_poll_rx(struct napi_struc
+@@ -1298,6 +1298,9 @@ static int mtk_poll_rx(struct napi_struc
goto release_desc;
}
@@ -21,11 +27,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
/* receive data */
skb = build_skb(data, ring->frag_size);
if (unlikely(!skb)) {
-- skb_free_frag(new_data);
-+ skb_free_frag(data);
- netdev->stats.rx_dropped++;
-- goto release_desc;
-+ goto skip_rx;
+@@ -1307,8 +1310,6 @@ static int mtk_poll_rx(struct napi_struc
}
skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
@@ -34,11 +36,3 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
pktlen = RX_DMA_GET_PLEN0(trxd.rxd2);
skb->dev = netdev;
skb_put(skb, pktlen);
-@@ -1325,6 +1326,7 @@ static int mtk_poll_rx(struct napi_struc
- skb_record_rx_queue(skb, 0);
- napi_gro_receive(napi, skb);
-
-+skip_rx:
- ring->data[idx] = new_data;
- rxd->rxd1 = (unsigned int)dma_addr;
-
diff --git
a/target/linux/generic/backport-5.10/610-v5.13-39-net-ethernet-mtk_eth_soc-fix-build_skb-cleanup.patch
b/target/linux/generic/backport-5.10/610-v5.13-39-net-ethernet-mtk_eth_soc-fix-build_skb-cleanup.patch
new file mode 100644
index 000000000000..dee26ccff106
--- /dev/null
+++
b/target/linux/generic/backport-5.10/610-v5.13-39-net-ethernet-mtk_eth_soc-fix-build_skb-cleanup.patch
@@ -0,0 +1,38 @@
+From 787082ab9f7be4711e52f67c388535eda74a1269 Mon Sep 17 00:00:00 2001
+From: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Date: Thu, 22 Apr 2021 22:20:56 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: fix build_skb cleanup
+
+In case build_skb fails, call skb_free_frag on the correct pointer. Also
+update the DMA structures with the new mapping before exiting, because
+the mapping was successful
+
+Suggested-by: Felix Fietkau <n...@nbd.name>
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
+---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -1304,9 +1304,9 @@ static int mtk_poll_rx(struct napi_struc
+ /* receive data */
+ skb = build_skb(data, ring->frag_size);
+ if (unlikely(!skb)) {
+- skb_free_frag(new_data);
++ skb_free_frag(data);
+ netdev->stats.rx_dropped++;
+- goto release_desc;
++ goto skip_rx;
+ }
+ skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
+
+@@ -1326,6 +1326,7 @@ static int mtk_poll_rx(struct napi_struc
+ skb_record_rx_queue(skb, 0);
+ napi_gro_receive(napi, skb);
+
++skip_rx:
+ ring->data[idx] = new_data;
+ rxd->rxd1 = (unsigned int)dma_addr;
+
diff --git
a/target/linux/generic/pending-5.10/770-00-net-ethernet-mtk_eth_soc-use-napi_consume_skb.patch
b/target/linux/generic/backport-5.10/610-v5.13-40-net-ethernet-mtk_eth_soc-use-napi_consume_skb.patch
similarity index 77%
rename from
target/linux/generic/pending-5.10/770-00-net-ethernet-mtk_eth_soc-use-napi_consume_skb.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-40-net-ethernet-mtk_eth_soc-use-napi_consume_skb.patch
index 58cecb6026f0..1d1845fa8491 100644
---
a/target/linux/generic/pending-5.10/770-00-net-ethernet-mtk_eth_soc-use-napi_consume_skb.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-40-net-ethernet-mtk_eth_soc-use-napi_consume_skb.patch
@@ -1,11 +1,16 @@
+From c30c4a82739090a2de4a4e3f245355ea4fb3ec14 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Mon, 8 Jun 2020 17:01:12 +0200
+Date: Thu, 22 Apr 2021 22:20:57 -0700
Subject: [PATCH] net: ethernet: mtk_eth_soc: use napi_consume_skb
Should improve performance, since it can use bulk free
Signed-off-by: Felix Fietkau <n...@nbd.name>
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 19 ++++++++++++-------
+ 1 file changed, 12 insertions(+), 7 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -43,7 +48,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
itxd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU;
if (!MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA))
-@@ -1386,7 +1391,7 @@ static int mtk_poll_tx_qdma(struct mtk_e
+@@ -1388,7 +1393,7 @@ static int mtk_poll_tx_qdma(struct mtk_e
done[mac]++;
budget--;
}
@@ -52,7 +57,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
ring->last_free = desc;
atomic_inc(&ring->free_count);
-@@ -1423,7 +1428,7 @@ static int mtk_poll_tx_pdma(struct mtk_e
+@@ -1425,7 +1430,7 @@ static int mtk_poll_tx_pdma(struct mtk_e
budget--;
}
@@ -61,7 +66,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
desc = &ring->dma[cpu];
ring->last_free = desc;
-@@ -1625,7 +1630,7 @@ static void mtk_tx_clean(struct mtk_eth
+@@ -1627,7 +1632,7 @@ static void mtk_tx_clean(struct mtk_eth
if (ring->buf) {
for (i = 0; i < MTK_DMA_SIZE; i++)
diff --git
a/target/linux/generic/pending-5.10/770-01-net-ethernet-mtk_eth_soc-significantly-reduce-mdio-b.patch
b/target/linux/generic/backport-5.10/610-v5.13-41-net-ethernet-mtk_eth_soc-reduce-MDIO-bus-access-late.patch
similarity index 65%
rename from
target/linux/generic/pending-5.10/770-01-net-ethernet-mtk_eth_soc-significantly-reduce-mdio-b.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-41-net-ethernet-mtk_eth_soc-reduce-MDIO-bus-access-late.patch
index 577b2eda162a..7ebc3fa90345 100644
---
a/target/linux/generic/pending-5.10/770-01-net-ethernet-mtk_eth_soc-significantly-reduce-mdio-b.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-41-net-ethernet-mtk_eth_soc-reduce-MDIO-bus-access-late.patch
@@ -1,7 +1,7 @@
+From 3630d519d7c3eab92567658690e44ffe0517d109 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Mon, 8 Jun 2020 17:02:39 +0200
-Subject: [PATCH] net: ethernet: mtk_eth_soc: significantly reduce mdio bus
- access latency
+Date: Thu, 22 Apr 2021 22:20:58 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: 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,
@@ -11,7 +11,11 @@ Use cond_resched instead of usleep_range, since the MDIO
access does not
take much time
Signed-off-by: Felix Fietkau <n...@nbd.name>
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
diff --git
a/target/linux/generic/pending-5.10/770-03-net-ethernet-mtk_eth_soc-fix-unnecessary-tx-queue-st.patch
b/target/linux/generic/backport-5.10/610-v5.13-42-net-ethernet-mtk_eth_soc-remove-unnecessary-TX-queue.patch
similarity index 68%
rename from
target/linux/generic/pending-5.10/770-03-net-ethernet-mtk_eth_soc-fix-unnecessary-tx-queue-st.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-42-net-ethernet-mtk_eth_soc-remove-unnecessary-TX-queue.patch
index eda10a452e77..67a7e3baed9f 100644
---
a/target/linux/generic/pending-5.10/770-03-net-ethernet-mtk_eth_soc-fix-unnecessary-tx-queue-st.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-42-net-ethernet-mtk_eth_soc-remove-unnecessary-TX-queue.patch
@@ -1,14 +1,18 @@
+From 16ef670789b252b221700adc413497ed2f941d8a Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Wed, 26 Aug 2020 16:55:54 +0200
-Subject: [PATCH] net: ethernet: mtk_eth_soc: fix unnecessary tx queue
- stops
+Date: Thu, 22 Apr 2021 22:20:59 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: remove unnecessary TX queue stops
-When running short on descriptors, only stop the queue for the netdev that tx
-was attempted for. By the time the something tries to send on the other netdev,
-the ring might have some more room already
+When running short on descriptors, only stop the queue for the netdev that
+tx was attempted for. By the time something tries to send on the other
+netdev, the ring might have some more room already.
Signed-off-by: Felix Fietkau <n...@nbd.name>
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 15 ++-------------
+ 1 file changed, 2 insertions(+), 13 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
diff --git
a/target/linux/generic/pending-5.10/770-04-net-ethernet-mtk_eth_soc-use-larger-burst-size-for-q.patch
b/target/linux/generic/backport-5.10/610-v5.13-43-net-ethernet-mtk_eth_soc-use-larger-burst-size-for-Q.patch
similarity index 67%
rename from
target/linux/generic/pending-5.10/770-04-net-ethernet-mtk_eth_soc-use-larger-burst-size-for-q.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-43-net-ethernet-mtk_eth_soc-use-larger-burst-size-for-Q.patch
index 24e069b8ae50..7c95b335782c 100644
---
a/target/linux/generic/pending-5.10/770-04-net-ethernet-mtk_eth_soc-use-larger-burst-size-for-q.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-43-net-ethernet-mtk_eth_soc-use-larger-burst-size-for-Q.patch
@@ -1,16 +1,21 @@
+From 59555a8d0dd39bf60b7ca1ba5e7393d293f7398d Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Wed, 26 Aug 2020 16:58:55 +0200
-Subject: [PATCH] net: ethernet: mtk_eth_soc: use larger burst size for
- qdma tx
+Date: Thu, 22 Apr 2021 22:21:00 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: use larger burst size for QDMA TX
Improves tx performance
Signed-off-by: Felix Fietkau <n...@nbd.name>
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
+ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -2191,7 +2191,7 @@ static int mtk_start_dma(struct mtk_eth
+@@ -2193,7 +2193,7 @@ static int mtk_start_dma(struct mtk_eth
if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) {
mtk_w32(eth,
MTK_TX_WB_DDONE | MTK_TX_DMA_EN |
diff --git
a/target/linux/generic/pending-5.10/770-05-net-ethernet-mtk_eth_soc-increase-DMA-ring-sizes.patch
b/target/linux/generic/backport-5.10/610-v5.13-44-net-ethernet-mtk_eth_soc-increase-DMA-ring-sizes.patch
similarity index 62%
rename from
target/linux/generic/pending-5.10/770-05-net-ethernet-mtk_eth_soc-increase-DMA-ring-sizes.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-44-net-ethernet-mtk_eth_soc-increase-DMA-ring-sizes.patch
index 201b70b65d39..d695f0fb8a6c 100644
---
a/target/linux/generic/pending-5.10/770-05-net-ethernet-mtk_eth_soc-increase-DMA-ring-sizes.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-44-net-ethernet-mtk_eth_soc-increase-DMA-ring-sizes.patch
@@ -1,12 +1,17 @@
+From 6b4423b258b91032c50a5efca15d3d9bb194ea1d Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Wed, 26 Aug 2020 16:59:41 +0200
+Date: Thu, 22 Apr 2021 22:21:01 -0700
Subject: [PATCH] net: ethernet: mtk_eth_soc: increase DMA ring sizes
-256 descriptors is not enough for multi-gigabit traffic under load on MT7622.
-Bump it to 512 to improve performance
+256 descriptors is not enough for multi-gigabit traffic under load on
+MT7622. Bump it to 512 to improve performance.
Signed-off-by: Felix Fietkau <n...@nbd.name>
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
diff --git
a/target/linux/generic/pending-5.10/770-06-net-ethernet-mtk_eth_soc-implement-dynamic-interrupt.patch
b/target/linux/generic/backport-5.10/610-v5.13-45-net-ethernet-mtk_eth_soc-implement-dynamic-interrupt.patch
similarity index 76%
rename from
target/linux/generic/pending-5.10/770-06-net-ethernet-mtk_eth_soc-implement-dynamic-interrupt.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-45-net-ethernet-mtk_eth_soc-implement-dynamic-interrupt.patch
index be82637e6dc9..ef4d2e875b76 100644
---
a/target/linux/generic/pending-5.10/770-06-net-ethernet-mtk_eth_soc-implement-dynamic-interrupt.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-45-net-ethernet-mtk_eth_soc-implement-dynamic-interrupt.patch
@@ -1,12 +1,20 @@
+From e9229ffd550b2d8c4997c67a501dbc3919fd4e26 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Wed, 26 Aug 2020 17:02:30 +0200
+Date: Thu, 22 Apr 2021 22:21:02 -0700
Subject: [PATCH] net: ethernet: mtk_eth_soc: implement dynamic interrupt
moderation
Reduces the number of interrupts under load
Signed-off-by: Felix Fietkau <n...@nbd.name>
+[Ilya: add documentation for new struct fields]
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/Kconfig | 1 +
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 96 +++++++++++++++++++--
+ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 41 +++++++--
+ 3 files changed, 124 insertions(+), 14 deletions(-)
--- a/drivers/net/ethernet/mediatek/Kconfig
+++ b/drivers/net/ethernet/mediatek/Kconfig
@@ -35,7 +43,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
while (done < budget) {
struct net_device *netdev;
-@@ -1311,6 +1312,7 @@ static int mtk_poll_rx(struct napi_struc
+@@ -1312,6 +1313,7 @@ static int mtk_poll_rx(struct napi_struc
else
skb_checksum_none_assert(skb);
skb->protocol = eth_type_trans(skb, netdev);
@@ -43,7 +51,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
(trxd.rxd2 & RX_DMA_VTAG))
-@@ -1342,6 +1344,12 @@ rx_done:
+@@ -1344,6 +1346,12 @@ rx_done:
mtk_update_rx_cpu_idx(eth);
}
@@ -56,7 +64,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
return done;
}
-@@ -1434,6 +1442,7 @@ static int mtk_poll_tx_pdma(struct mtk_e
+@@ -1436,6 +1444,7 @@ static int mtk_poll_tx_pdma(struct mtk_e
static int mtk_poll_tx(struct mtk_eth *eth, int budget)
{
struct mtk_tx_ring *ring = ð->tx_ring;
@@ -64,7 +72,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
unsigned int done[MTK_MAX_DEVS];
unsigned int bytes[MTK_MAX_DEVS];
int total = 0, i;
-@@ -1451,8 +1460,14 @@ static int mtk_poll_tx(struct mtk_eth *e
+@@ -1453,8 +1462,14 @@ static int mtk_poll_tx(struct mtk_eth *e
continue;
netdev_completed_queue(eth->netdev[i], done[i], bytes[i]);
total += done[i];
@@ -79,7 +87,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
if (mtk_queue_stopped(eth) &&
(atomic_read(&ring->free_count) > ring->thresh))
mtk_wake_queue(eth);
-@@ -2127,6 +2142,7 @@ static irqreturn_t mtk_handle_irq_rx(int
+@@ -2129,6 +2144,7 @@ static irqreturn_t mtk_handle_irq_rx(int
{
struct mtk_eth *eth = _eth;
@@ -87,7 +95,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
if (likely(napi_schedule_prep(ð->rx_napi))) {
__napi_schedule(ð->rx_napi);
mtk_rx_irq_disable(eth, MTK_RX_DONE_INT);
-@@ -2139,6 +2155,7 @@ static irqreturn_t mtk_handle_irq_tx(int
+@@ -2141,6 +2157,7 @@ static irqreturn_t mtk_handle_irq_tx(int
{
struct mtk_eth *eth = _eth;
@@ -95,7 +103,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
if (likely(napi_schedule_prep(ð->tx_napi))) {
__napi_schedule(ð->tx_napi);
mtk_tx_irq_disable(eth, MTK_TX_DONE_INT);
-@@ -2323,6 +2340,9 @@ static int mtk_stop(struct net_device *d
+@@ -2325,6 +2342,9 @@ static int mtk_stop(struct net_device *d
napi_disable(ð->tx_napi);
napi_disable(ð->rx_napi);
@@ -105,7 +113,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA))
mtk_stop_dma(eth, MTK_QDMA_GLO_CFG);
mtk_stop_dma(eth, MTK_PDMA_GLO_CFG);
-@@ -2375,6 +2395,64 @@ err_disable_clks:
+@@ -2377,6 +2397,64 @@ err_disable_clks:
return ret;
}
@@ -170,7 +178,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
static int mtk_hw_init(struct mtk_eth *eth)
{
int i, val, ret;
-@@ -2396,9 +2474,6 @@ static int mtk_hw_init(struct mtk_eth *e
+@@ -2398,9 +2476,6 @@ static int mtk_hw_init(struct mtk_eth *e
goto err_disable_pm;
}
@@ -180,12 +188,13 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
/* disable delay and normal interrupt */
mtk_tx_irq_disable(eth, ~0);
mtk_rx_irq_disable(eth, ~0);
-@@ -2437,11 +2512,10 @@ static int mtk_hw_init(struct mtk_eth *e
+@@ -2439,11 +2514,11 @@ static int mtk_hw_init(struct mtk_eth *e
/* Enable RX VLan Offloading */
mtk_w32(eth, 1, MTK_CDMP_EG_CTRL);
- /* enable interrupt delay for RX */
- mtk_w32(eth, MTK_PDMA_DELAY_RX_DELAY, MTK_PDMA_DELAY_INT);
++ /* set interrupt delays based on current Net DIM sample */
+ mtk_dim_rx(ð->rx_dim.work);
+ mtk_dim_tx(ð->tx_dim.work);
@@ -194,7 +203,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
mtk_tx_irq_disable(eth, ~0);
mtk_rx_irq_disable(eth, ~0);
-@@ -2946,6 +3020,13 @@ static int mtk_probe(struct platform_dev
+@@ -2948,6 +3023,13 @@ static int mtk_probe(struct platform_dev
spin_lock_init(ð->page_lock);
spin_lock_init(ð->tx_irq_lock);
spin_lock_init(ð->rx_irq_lock);
@@ -260,7 +269,30 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
/* QDMA Interrupt grouping registers */
#define MTK_QDMA_INT_GRP1 0x1a20
-@@ -905,6 +911,18 @@ struct mtk_eth {
+@@ -843,6 +849,7 @@ struct mtk_sgmii {
+ * @page_lock: Make sure that register operations are atomic
+ * @tx_irq__lock: Make sure that IRQ register operations are atomic
+ * @rx_irq__lock: Make sure that IRQ register operations are atomic
++ * @dim_lock: Make sure that Net DIM operations are atomic
+ * @dummy_dev: we run 2 netdevs on 1 physical DMA ring and
need a
+ * dummy for NAPI to work
+ * @netdev: The netdev instances
+@@ -861,6 +868,14 @@ struct mtk_sgmii {
+ * @rx_ring_qdma: Pointer to the memory holding info about the QDMA RX
ring
+ * @tx_napi: The TX NAPI struct
+ * @rx_napi: The RX NAPI struct
++ * @rx_events: Net DIM RX event counter
++ * @rx_packets: Net DIM RX packet counter
++ * @rx_bytes: Net DIM RX byte counter
++ * @rx_dim: Net DIM RX context
++ * @tx_events: Net DIM TX event counter
++ * @tx_packets: Net DIM TX packet counter
++ * @tx_bytes: Net DIM TX byte counter
++ * @tx_dim: Net DIM TX context
+ * @scratch_ring: Newer SoCs need memory for a second HW managed TX ring
+ * @phy_scratch_ring: physical address of scratch_ring
+ * @scratch_head: The scratch memory that scratch_ring points to.
+@@ -905,6 +920,18 @@ struct mtk_eth {
const struct mtk_soc_data *soc;
diff --git
a/target/linux/generic/pending-5.10/770-08-net-ethernet-mtk_eth_soc-cache-hardware-pointer-of-l.patch
b/target/linux/generic/backport-5.10/610-v5.13-46-net-ethernet-mtk_eth_soc-cache-HW-pointer-of-last-fr.patch
similarity index 70%
rename from
target/linux/generic/pending-5.10/770-08-net-ethernet-mtk_eth_soc-cache-hardware-pointer-of-l.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-46-net-ethernet-mtk_eth_soc-cache-HW-pointer-of-last-fr.patch
index b4ae8dc2e8da..db21878e92e1 100644
---
a/target/linux/generic/pending-5.10/770-08-net-ethernet-mtk_eth_soc-cache-hardware-pointer-of-l.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-46-net-ethernet-mtk_eth_soc-cache-HW-pointer-of-last-fr.patch
@@ -1,17 +1,23 @@
+From 4e6bf609569c59b6bd6acf4a607c096cbd820d79 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Thu, 27 Aug 2020 06:32:03 +0200
-Subject: [PATCH] net: ethernet: mtk_eth_soc: cache hardware pointer of last
- freed tx descriptor
+Date: Thu, 22 Apr 2021 22:21:03 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: cache HW pointer of last freed TX
+ descriptor
-The value is only updated by the CPU, so it is cheaper to access from the ring
-data structure than from a hardware register
+The value is only updated by the CPU, so it is cheaper to access from the
+ring data structure than from a hardware register.
Signed-off-by: Felix Fietkau <n...@nbd.name>
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 8 ++++----
+ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 ++
+ 2 files changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -1362,7 +1362,7 @@ static int mtk_poll_tx_qdma(struct mtk_e
+@@ -1364,7 +1364,7 @@ static int mtk_poll_tx_qdma(struct mtk_e
struct mtk_tx_buf *tx_buf;
u32 cpu, dma;
@@ -20,7 +26,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
dma = mtk_r32(eth, MTK_QTX_DRX_PTR);
desc = mtk_qdma_phys_to_virt(ring, cpu);
-@@ -1396,6 +1396,7 @@ static int mtk_poll_tx_qdma(struct mtk_e
+@@ -1398,6 +1398,7 @@ static int mtk_poll_tx_qdma(struct mtk_e
cpu = next_cpu;
}
@@ -28,7 +34,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
mtk_w32(eth, cpu, MTK_QTX_CRX_PTR);
return budget;
-@@ -1596,6 +1597,7 @@ static int mtk_tx_alloc(struct mtk_eth *
+@@ -1598,6 +1599,7 @@ static int mtk_tx_alloc(struct mtk_eth *
atomic_set(&ring->free_count, MTK_DMA_SIZE - 2);
ring->next_free = &ring->dma[0];
ring->last_free = &ring->dma[MTK_DMA_SIZE - 1];
@@ -36,7 +42,7 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
ring->thresh = MAX_SKB_FRAGS;
/* make sure that all changes to the dma ring are flushed before we
-@@ -1609,9 +1611,7 @@ static int mtk_tx_alloc(struct mtk_eth *
+@@ -1611,9 +1613,7 @@ static int mtk_tx_alloc(struct mtk_eth *
mtk_w32(eth,
ring->phys + ((MTK_DMA_SIZE - 1) * sz),
MTK_QTX_CRX_PTR);
diff --git
a/target/linux/generic/pending-5.10/770-09-net-ethernet-mtk_eth_soc-only-read-the-full-rx-descr.patch
b/target/linux/generic/backport-5.10/610-v5.13-47-net-ethernet-mtk_eth_soc-only-read-the-full-RX-descr.patch
similarity index 77%
rename from
target/linux/generic/pending-5.10/770-09-net-ethernet-mtk_eth_soc-only-read-the-full-rx-descr.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-47-net-ethernet-mtk_eth_soc-only-read-the-full-RX-descr.patch
index b744ac643cee..f1a3fbd864cf 100644
---
a/target/linux/generic/pending-5.10/770-09-net-ethernet-mtk_eth_soc-only-read-the-full-rx-descr.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-47-net-ethernet-mtk_eth_soc-only-read-the-full-RX-descr.patch
@@ -1,13 +1,18 @@
+From 816ac3e6e67bdd78d86226c6eb53619780750e92 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@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
+Date: Thu, 22 Apr 2021 22:21:04 -0700
+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 <n...@nbd.name>
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 12 ++++++++----
+ 1 file changed, 8 insertions(+), 4 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
diff --git
a/target/linux/generic/pending-5.10/770-11-net-ethernet-mtk_eth_soc-avoid-rearming-interrupt-if.patch
b/target/linux/generic/backport-5.10/610-v5.13-48-net-ethernet-mtk_eth_soc-reduce-unnecessary-interrup.patch
similarity index 61%
rename from
target/linux/generic/pending-5.10/770-11-net-ethernet-mtk_eth_soc-avoid-rearming-interrupt-if.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-48-net-ethernet-mtk_eth_soc-reduce-unnecessary-interrup.patch
index 4c61951d77c5..21e14ed1e5ab 100644
---
a/target/linux/generic/pending-5.10/770-11-net-ethernet-mtk_eth_soc-avoid-rearming-interrupt-if.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-48-net-ethernet-mtk_eth_soc-reduce-unnecessary-interrup.patch
@@ -1,12 +1,16 @@
+From 16769a8923fad5a5377253bcd76b0e0d64976c73 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Fri, 4 Sep 2020 18:14:05 +0200
-Subject: [PATCH] net: ethernet: mtk_eth_soc: avoid rearming interrupt if
- napi_complete returns false
+Date: Thu, 22 Apr 2021 22:21:05 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: reduce unnecessary interrupts
-Reduces unnecessary interrupts
+Avoid rearming interrupt if napi_complete returns false
Signed-off-by: Felix Fietkau <n...@nbd.name>
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 9 +++++----
+ 1 file changed, 5 insertions(+), 4 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
diff --git
a/target/linux/generic/backport-5.10/610-v5.13-49-net-ethernet-mtk_eth_soc-rework-NAPI-callbacks.patch
b/target/linux/generic/backport-5.10/610-v5.13-49-net-ethernet-mtk_eth_soc-rework-NAPI-callbacks.patch
new file mode 100644
index 000000000000..9bc948015d24
--- /dev/null
+++
b/target/linux/generic/backport-5.10/610-v5.13-49-net-ethernet-mtk_eth_soc-rework-NAPI-callbacks.patch
@@ -0,0 +1,110 @@
+From db2c7b353db3b3f71b55f9ff4627d8a786446fbe Mon Sep 17 00:00:00 2001
+From: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Date: Thu, 22 Apr 2021 22:21:06 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: rework NAPI callbacks
+
+Use napi_complete_done to communicate total TX and RX work done to NAPI.
+Count total RX work up instead of remaining work down for clarity.
+Remove unneeded local variables for clarity. Use do {} while instead of
+goto for clarity.
+
+Suggested-by: Jakub Kicinski <k...@kernel.org>
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
+---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 54 +++++++++------------
+ 1 file changed, 24 insertions(+), 30 deletions(-)
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -1496,7 +1496,6 @@ static void mtk_handle_status_irq(struct
+ static int mtk_napi_tx(struct napi_struct *napi, int budget)
+ {
+ struct mtk_eth *eth = container_of(napi, struct mtk_eth, tx_napi);
+- u32 status, mask;
+ int tx_done = 0;
+
+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA))
+@@ -1505,21 +1504,19 @@ static int mtk_napi_tx(struct napi_struc
+ tx_done = mtk_poll_tx(eth, budget);
+
+ if (unlikely(netif_msg_intr(eth))) {
+- status = mtk_r32(eth, eth->tx_int_status_reg);
+- mask = mtk_r32(eth, eth->tx_int_mask_reg);
+ dev_info(eth->dev,
+- "done tx %d, intr 0x%08x/0x%x\n",
+- tx_done, status, mask);
++ "done tx %d, intr 0x%08x/0x%x\n", tx_done,
++ mtk_r32(eth, eth->tx_int_status_reg),
++ mtk_r32(eth, eth->tx_int_mask_reg));
+ }
+
+ if (tx_done == budget)
+ return budget;
+
+- status = mtk_r32(eth, eth->tx_int_status_reg);
+- if (status & MTK_TX_DONE_INT)
++ if (mtk_r32(eth, eth->tx_int_status_reg) & MTK_TX_DONE_INT)
+ return budget;
+
+- if (napi_complete(napi))
++ if (napi_complete_done(napi, tx_done))
+ mtk_tx_irq_enable(eth, MTK_TX_DONE_INT);
+
+ return tx_done;
+@@ -1528,36 +1525,33 @@ static int mtk_napi_tx(struct napi_struc
+ static int mtk_napi_rx(struct napi_struct *napi, int budget)
+ {
+ struct mtk_eth *eth = container_of(napi, struct mtk_eth, rx_napi);
+- u32 status, mask;
+- int rx_done = 0;
+- int remain_budget = budget;
++ int rx_done_total = 0;
+
+ mtk_handle_status_irq(eth);
+
+-poll_again:
+- mtk_w32(eth, MTK_RX_DONE_INT, MTK_PDMA_INT_STATUS);
+- rx_done = mtk_poll_rx(napi, remain_budget, eth);
++ do {
++ int rx_done;
+
+- if (unlikely(netif_msg_intr(eth))) {
+- status = mtk_r32(eth, MTK_PDMA_INT_STATUS);
+- mask = mtk_r32(eth, MTK_PDMA_INT_MASK);
+- dev_info(eth->dev,
+- "done rx %d, intr 0x%08x/0x%x\n",
+- rx_done, status, mask);
+- }
+- if (rx_done == remain_budget)
+- return budget;
++ mtk_w32(eth, MTK_RX_DONE_INT, MTK_PDMA_INT_STATUS);
++ rx_done = mtk_poll_rx(napi, budget - rx_done_total, eth);
++ rx_done_total += rx_done;
++
++ if (unlikely(netif_msg_intr(eth))) {
++ dev_info(eth->dev,
++ "done rx %d, intr 0x%08x/0x%x\n", rx_done,
++ mtk_r32(eth, MTK_PDMA_INT_STATUS),
++ mtk_r32(eth, MTK_PDMA_INT_MASK));
++ }
+
+- status = mtk_r32(eth, MTK_PDMA_INT_STATUS);
+- if (status & MTK_RX_DONE_INT) {
+- remain_budget -= rx_done;
+- goto poll_again;
+- }
++ if (rx_done_total == budget)
++ return budget;
++
++ } while (mtk_r32(eth, MTK_PDMA_INT_STATUS) & MTK_RX_DONE_INT);
+
+- if (napi_complete(napi))
++ if (napi_complete_done(napi, rx_done_total))
+ mtk_rx_irq_enable(eth, MTK_RX_DONE_INT);
+
+- return rx_done + budget - remain_budget;
++ return rx_done_total;
+ }
+
+ static int mtk_tx_alloc(struct mtk_eth *eth)
diff --git
a/target/linux/generic/pending-5.10/770-14-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch
b/target/linux/generic/backport-5.10/610-v5.13-50-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch
similarity index 68%
rename from
target/linux/generic/pending-5.10/770-14-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch
rename to
target/linux/generic/backport-5.10/610-v5.13-50-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch
index e94b352b9ce4..2355a4831d7f 100644
---
a/target/linux/generic/pending-5.10/770-14-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch
+++
b/target/linux/generic/backport-5.10/610-v5.13-50-net-ethernet-mtk_eth_soc-set-PPE-flow-hash-as-skb-ha.patch
@@ -1,12 +1,18 @@
+From fa817272c37ef78e25dc14e4760ac78a7043a18a Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@nbd.name>
-Date: Sun, 13 Sep 2020 08:27:24 +0200
-Subject: [PATCH] net: ethernet: mtk_eth_soc: set PPE flow hash as skb hash
- if present
+Date: Thu, 22 Apr 2021 22:21:07 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: set PPE flow hash as skb hash if
+ present
This improves GRO performance
Signed-off-by: Felix Fietkau <n...@nbd.name>
+[Ilya: Use MTK_RXD4_FOE_ENTRY instead of GENMASK(13, 0)]
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Signed-off-by: David S. Miller <da...@davemloft.net>
---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -30,8 +36,8 @@ Signed-off-by: Felix Fietkau <n...@nbd.name>
skb->protocol = eth_type_trans(skb, netdev);
bytes += pktlen;
-+ hash = trxd.rxd4 & GENMASK(13, 0);
-+ if (hash != GENMASK(13, 0)) {
++ hash = trxd.rxd4 & MTK_RXD4_FOE_ENTRY;
++ if (hash != MTK_RXD4_FOE_ENTRY) {
+ hash = jhash_1word(hash, 0);
+ skb_set_hash(skb, hash, PKT_HASH_TYPE_L4);
+ }
diff --git
a/target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch
b/target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch
new file mode 100644
index 000000000000..fd2fb0f7c418
--- /dev/null
+++
b/target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch
@@ -0,0 +1,71 @@
+From 3bc8e0aff23be0526af0dbc7973a8866a08d73f1 Mon Sep 17 00:00:00 2001
+From: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Date: Thu, 22 Apr 2021 22:21:08 -0700
+Subject: [PATCH] net: ethernet: mtk_eth_soc: use iopoll.h macro for DMA init
+
+Replace a tight busy-wait loop without a pause with a standard
+readx_poll_timeout_atomic routine with a 5 us poll period.
+
+Tested by booting a MT7621 device to ensure the driver initializes
+properly.
+
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnits...@gmail.com>
+Reviewed-by: Andrew Lunn <and...@lunn.ch>
+Signed-off-by: David S. Miller <da...@davemloft.net>
+---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 29 +++++++++------------
+ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 +-
+ 2 files changed, 14 insertions(+), 17 deletions(-)
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -2033,25 +2033,22 @@ static int mtk_set_features(struct net_d
+ /* wait for DMA to finish whatever it is doing before we start using it again
*/
+ static int mtk_dma_busy_wait(struct mtk_eth *eth)
+ {
+- unsigned long t_start = jiffies;
++ unsigned int reg;
++ int ret;
++ u32 val;
+
+- while (1) {
+- if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) {
+- if (!(mtk_r32(eth, MTK_QDMA_GLO_CFG) &
+- (MTK_RX_DMA_BUSY | MTK_TX_DMA_BUSY)))
+- return 0;
+- } else {
+- if (!(mtk_r32(eth, MTK_PDMA_GLO_CFG) &
+- (MTK_RX_DMA_BUSY | MTK_TX_DMA_BUSY)))
+- return 0;
+- }
++ if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA))
++ reg = MTK_QDMA_GLO_CFG;
++ else
++ reg = MTK_PDMA_GLO_CFG;
+
+- if (time_after(jiffies, t_start + MTK_DMA_BUSY_TIMEOUT))
+- break;
+- }
++ ret = readx_poll_timeout_atomic(__raw_readl, eth->base + reg, val,
++ !(val & (MTK_RX_DMA_BUSY |
MTK_TX_DMA_BUSY)),
++ 5, MTK_DMA_BUSY_TIMEOUT_US);
++ if (ret)
++ dev_err(eth->dev, "DMA init timeout\n");
+
+- dev_err(eth->dev, "DMA init timeout\n");
+- return -1;
++ return ret;
+ }
+
+ static int mtk_dma_init(struct mtk_eth *eth)
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+@@ -213,7 +213,7 @@
+ #define MTK_TX_DMA_BUSY BIT(1)
+ #define MTK_RX_DMA_EN BIT(2)
+ #define MTK_TX_DMA_EN BIT(0)
+-#define MTK_DMA_BUSY_TIMEOUT HZ
++#define MTK_DMA_BUSY_TIMEOUT_US 1000000
+
+ /* QDMA Reset Index Register */
+ #define MTK_QDMA_RST_IDX 0x1A08
diff --git
a/target/linux/ramips/patches-5.10/700-net-ethernet-mediatek-support-net-labels.patch
b/target/linux/ramips/patches-5.10/700-net-ethernet-mediatek-support-net-labels.patch
index ec3ca93770cb..e94999b73e7a 100644
---
a/target/linux/ramips/patches-5.10/700-net-ethernet-mediatek-support-net-labels.patch
+++
b/target/linux/ramips/patches-5.10/700-net-ethernet-mediatek-support-net-labels.patch
@@ -14,7 +14,7 @@ Signed-off-by: René van Dorst <opensou...@vdorst.com>
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -2901,6 +2901,7 @@ static const struct net_device_ops mtk_n
+@@ -2893,6 +2893,7 @@ 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 <opensou...@vdorst.com>
const __be32 *_id = of_get_property(np, "reg", NULL);
phy_interface_t phy_mode;
struct phylink *phylink;
-@@ -2993,6 +2994,9 @@ static int mtk_add_mac(struct mtk_eth *e
+@@ -2985,6 +2986,9 @@ static int mtk_add_mac(struct mtk_eth *e
eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN;
--
2.31.1
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