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domenico
2025-06-24 12:51:15 +02:00
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78
target/linux/gemini/patches-6.6/0001-net-ethernet-cortina-Drop-TSO-support.patch Normal file
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From f8001196455311eb128fcafd98cb2050a70218df Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Sat, 6 Jan 2024 01:12:22 +0100
Subject: [PATCH 4/4] net: ethernet: cortina: Drop TSO support
The recent change to allow large frames without hardware checksumming
slotted in software checksumming in the driver if hardware could not
do it.
This will however upset TSO (TCP Segment Offloading). Typical
error dumps includes this:
skb len=2961 headroom=222 headlen=66 tailroom=0
(...)
WARNING: CPU: 0 PID: 956 at net/core/dev.c:3259 skb_warn_bad_offload+0x7c/0x108
gemini-ethernet-port: caps=(0x0000010000154813, 0x00002007ffdd7889)
And the packets do not go through.
The TSO implementation is bogus: a TSO enabled driver must propagate
the skb_shinfo(skb)->gso_size value to the TSO engine on the NIC.
Drop the size check and TSO offloading features for now: this
needs to be fixed up properly.
After this ethernet works fine on Gemini devices with a direct connected
PHY such as D-Link DNS-313.
Also tested to still be working with a DSA switch using the Gemini
ethernet as conduit interface.
Link: https://lore.kernel.org/netdev/CANn89iJLfxng1sYL5Zk0mknXpyYQPCp83m3KgD2KJ2_hKCpEUg@mail.gmail.com/
Suggested-by: Eric Dumazet <edumazet@google.com>
Fixes: d4d0c5b4d279 ("net: ethernet: cortina: Handle large frames")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/cortina/gemini.c | 15 ++-------------
1 file changed, 2 insertions(+), 13 deletions(-)
--- a/drivers/net/ethernet/cortina/gemini.c
+++ b/drivers/net/ethernet/cortina/gemini.c
@@ -79,8 +79,7 @@ MODULE_PARM_DESC(debug, "Debug level (0=
#define GMAC0_IRQ4_8 (GMAC0_MIB_INT_BIT | GMAC0_RX_OVERRUN_INT_BIT)
#define GMAC_OFFLOAD_FEATURES (NETIF_F_SG | NETIF_F_IP_CSUM | \
- NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | \
- NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
+ NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM)
/**
* struct gmac_queue_page - page buffer per-page info
@@ -1148,23 +1147,13 @@ static int gmac_map_tx_bufs(struct net_d
struct gmac_txdesc *txd;
skb_frag_t *skb_frag;
dma_addr_t mapping;
- unsigned short mtu;
void *buffer;
int ret;
- mtu = ETH_HLEN;
- mtu += netdev->mtu;
- if (skb->protocol == htons(ETH_P_8021Q))
- mtu += VLAN_HLEN;
-
+ /* TODO: implement proper TSO using MTU in word3 */
word1 = skb->len;
word3 = SOF_BIT;
- if (word1 > mtu) {
- word1 |= TSS_MTU_ENABLE_BIT;
- word3 |= mtu;
- }
-
if (skb->len >= ETH_FRAME_LEN) {
/* Hardware offloaded checksumming isn't working on frames
* bigger than 1514 bytes. A hypothesis about this is that the

103
target/linux/gemini/patches-6.6/0002-ARM-dts-gemini-Map-reset-keys-to-KEY_RESTART.patch Normal file
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From 091cde88b5ff2a2ca5739ce41f9cf5640a95222f Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Sun, 11 Feb 2024 22:24:25 +0100
Subject: [PATCH] ARM: dts: gemini: Map reset keys to KEY_RESTART
This maps the misc "reset", "setup" and "facory reset" keys to the
only key a standard userspace is likely to understand: KEY_RESTART.
On OpenWrt this will simply restart the system under controlled
forms.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240211-gemini-dts-v1-3-6c09adeb4c2e@linaro.org
---
arch/arm/boot/dts/gemini/gemini-dlink-dir-685.dts | 4 ++--
arch/arm/boot/dts/gemini/gemini-dlink-dns-313.dts | 4 ++--
arch/arm/boot/dts/gemini/gemini-sl93512r.dts | 2 +-
arch/arm/boot/dts/gemini/gemini-sq201.dts | 2 +-
arch/arm/boot/dts/gemini/gemini-wbd111.dts | 4 ++--
arch/arm/boot/dts/gemini/gemini-wbd222.dts | 4 ++--
6 files changed, 10 insertions(+), 10 deletions(-)
--- a/arch/arm/boot/dts/gemini/gemini-dlink-dir-685.dts
+++ b/arch/arm/boot/dts/gemini/gemini-dlink-dir-685.dts
@@ -27,10 +27,10 @@
gpio_keys {
compatible = "gpio-keys";
- button-esc {
+ button-reset {
debounce-interval = <100>;
wakeup-source;
- linux,code = <KEY_ESC>;
+ linux,code = <KEY_RESTART>;
label = "reset";
/* Collides with LPC_LAD[0], UART DCD, SSP 97RST */
gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
--- a/arch/arm/boot/dts/gemini/gemini-dlink-dns-313.dts
+++ b/arch/arm/boot/dts/gemini/gemini-dlink-dns-313.dts
@@ -33,10 +33,10 @@
gpio_keys {
compatible = "gpio-keys";
- button-esc {
+ button-reset {
debounce-interval = <100>;
wakeup-source;
- linux,code = <KEY_ESC>;
+ linux,code = <KEY_RESTART>;
label = "reset";
gpios = <&gpio1 31 GPIO_ACTIVE_LOW>;
};
--- a/arch/arm/boot/dts/gemini/gemini-sl93512r.dts
+++ b/arch/arm/boot/dts/gemini/gemini-sl93512r.dts
@@ -43,7 +43,7 @@
button-setup {
debounce-interval = <50>;
wakeup-source;
- linux,code = <KEY_SETUP>;
+ linux,code = <KEY_RESTART>;
label = "factory reset";
/* Conflict with NAND flash */
gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
--- a/arch/arm/boot/dts/gemini/gemini-sq201.dts
+++ b/arch/arm/boot/dts/gemini/gemini-sq201.dts
@@ -30,7 +30,7 @@
button-setup {
debounce-interval = <100>;
wakeup-source;
- linux,code = <KEY_SETUP>;
+ linux,code = <KEY_RESTART>;
label = "factory reset";
/* Conflict with NAND flash */
gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
--- a/arch/arm/boot/dts/gemini/gemini-wbd111.dts
+++ b/arch/arm/boot/dts/gemini/gemini-wbd111.dts
@@ -28,10 +28,10 @@
gpio_keys {
compatible = "gpio-keys";
- button-setup {
+ button-reset {
debounce-interval = <100>;
wakeup-source;
- linux,code = <KEY_SETUP>;
+ linux,code = <KEY_RESTART>;
label = "reset";
/* Conflict with ICE */
gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
--- a/arch/arm/boot/dts/gemini/gemini-wbd222.dts
+++ b/arch/arm/boot/dts/gemini/gemini-wbd222.dts
@@ -27,10 +27,10 @@
gpio_keys {
compatible = "gpio-keys";
- button-setup {
+ button-reset {
debounce-interval = <100>;
wakeup-source;
- linux,code = <KEY_SETUP>;
+ linux,code = <KEY_RESTART>;
label = "reset";
/* Conflict with ICE */
gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;

124
target/linux/gemini/patches-6.6/0004-net-ethernet-cortina-Restore-TSO-support.patch Normal file
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@@ -0,0 +1,124 @@
From 30fcba19ed88997a2909e4a68b4d39ff371357c3 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Wed, 1 May 2024 21:46:31 +0200
Subject: [PATCH 1/5] net: ethernet: cortina: Restore TSO support
An earlier commit deleted the TSO support in the Cortina Gemini
driver because the driver was confusing gso_size and MTU,
probably because what the Linux kernel calls "gso_size" was
called "MTU" in the datasheet.
Restore the functionality properly reading the gso_size from
the skbuff.
Tested with iperf3, running a server on a different machine
and client on the device with the cortina gemini ethernet:
Connecting to host 192.168.1.2, port 5201
60008000.ethernet-port eth0: segment offloading mss = 05ea len=1c8a
60008000.ethernet-port eth0: segment offloading mss = 05ea len=1c8a
60008000.ethernet-port eth0: segment offloading mss = 05ea len=27da
60008000.ethernet-port eth0: segment offloading mss = 05ea len=0b92
60008000.ethernet-port eth0: segment offloading mss = 05ea len=2bda
(...)
(The hardware MSS 0x05ea here includes the ethernet headers.)
If I disable all segment offloading on the receiving host and
dump packets using tcpdump -xx like this:
ethtool -K enp2s0 gro off gso off tso off
tcpdump -xx -i enp2s0 host 192.168.1.136
I get segmented packages such as this when running iperf3:
23:16:54.024139 IP OpenWrt.lan.59168 > Fecusia.targus-getdata1:
Flags [.], seq 1486:2934, ack 1, win 4198,
options [nop,nop,TS val 3886192908 ecr 3601341877], length 1448
0x0000: fc34 9701 a0c6 14d6 4da8 3c4f 0800 4500
0x0010: 05dc 16a0 4000 4006 9aa1 c0a8 0188 c0a8
0x0020: 0102 e720 1451 ff25 9822 4c52 29cf 8010
0x0030: 1066 ac8c 0000 0101 080a e7a2 990c d6a8
(...)
0x05c0: 5e49 e109 fe8c 4617 5e18 7a82 7eae d647
0x05d0: e8ee ae64 dc88 c897 3f8a 07a4 3a33 6b1b
0x05e0: 3501 a30f 2758 cc44 4b4a
Several such packets often follow after each other verifying
the segmentation into 0x05a8 (1448) byte packages also on the
reveiving end. As can be seen, the ethernet frames are
0x05ea (1514) in size.
Performance with iperf3 before this patch: ~15.5 Mbit/s
Performance with iperf3 after this patch: ~175 Mbit/s
This was running a 60 second test (twice) the best measurement
was 179 Mbit/s.
For comparison if I run iperf3 with UDP I get around 1.05 Mbit/s
both before and after this patch.
While this is a gigabit ethernet interface, the CPU is a cheap
D-Link DIR-685 router (based on the ARMv5 Faraday FA526 at
~50 MHz), and the software is not supposed to drive traffic,
as the device has a DSA chip, so this kind of numbers can be
expected.
Fixes: ac631873c9e7 ("net: ethernet: cortina: Drop TSO support")
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/net/ethernet/cortina/gemini.c | 23 +++++++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)
--- a/drivers/net/ethernet/cortina/gemini.c
+++ b/drivers/net/ethernet/cortina/gemini.c
@@ -79,7 +79,8 @@ MODULE_PARM_DESC(debug, "Debug level (0=
#define GMAC0_IRQ4_8 (GMAC0_MIB_INT_BIT | GMAC0_RX_OVERRUN_INT_BIT)
#define GMAC_OFFLOAD_FEATURES (NETIF_F_SG | NETIF_F_IP_CSUM | \
- NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM)
+ NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | \
+ NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
/**
* struct gmac_queue_page - page buffer per-page info
@@ -1148,13 +1149,25 @@ static int gmac_map_tx_bufs(struct net_d
skb_frag_t *skb_frag;
dma_addr_t mapping;
void *buffer;
+ u16 mss;
int ret;
- /* TODO: implement proper TSO using MTU in word3 */
word1 = skb->len;
word3 = SOF_BIT;
- if (skb->len >= ETH_FRAME_LEN) {
+ mss = skb_shinfo(skb)->gso_size;
+ if (mss) {
+ /* This means we are dealing with TCP and skb->len is the
+ * sum total of all the segments. The TSO will deal with
+ * chopping this up for us.
+ */
+ /* The accelerator needs the full frame size here */
+ mss += skb_tcp_all_headers(skb);
+ netdev_dbg(netdev, "segment offloading mss = %04x len=%04x\n",
+ mss, skb->len);
+ word1 |= TSS_MTU_ENABLE_BIT;
+ word3 |= mss;
+ } else if (skb->len >= ETH_FRAME_LEN) {
/* Hardware offloaded checksumming isn't working on frames
* bigger than 1514 bytes. A hypothesis about this is that the
* checksum buffer is only 1518 bytes, so when the frames get
@@ -1169,7 +1182,9 @@ static int gmac_map_tx_bufs(struct net_d
return ret;
}
word1 |= TSS_BYPASS_BIT;
- } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ }
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
int tcp = 0;
/* We do not switch off the checksumming on non TCP/UDP

95
target/linux/gemini/patches-6.6/0005-net-ethernet-cortina-Use-TSO-also-on-common-TCP.patch Normal file
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@@ -0,0 +1,95 @@
From 91fb8a7328dda827bc6c0da240a1eb17028416cd Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Thu, 9 May 2024 23:59:28 +0200
Subject: [PATCH 2/5] net: ethernet: cortina: Use TSO also on common TCP
It is possible to push the segment offloader to also
process non-segmented frames: just pass the skb->len
or desired MSS to the offloader and it will handle them.
This is especially good if the user sets up the MTU
and the frames get big, because the checksumming engine
cannot handle any frames bigger than 1518 bytes, so
segmenting them all to be at max that will be helpful
for the hardware, which only need to quirk odd frames
such as big UDP ping packets.
The vendor driver always uses the TSO like this, and
the driver seems more stable after this, so apparently
the hardware may have been engineered to always use
the TSO on anything it can handle.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/net/ethernet/cortina/gemini.c | 31 +++++++++++++++++++++------
1 file changed, 24 insertions(+), 7 deletions(-)
--- a/drivers/net/ethernet/cortina/gemini.c
+++ b/drivers/net/ethernet/cortina/gemini.c
@@ -1148,6 +1148,7 @@ static int gmac_map_tx_bufs(struct net_d
struct gmac_txdesc *txd;
skb_frag_t *skb_frag;
dma_addr_t mapping;
+ bool tcp = false;
void *buffer;
u16 mss;
int ret;
@@ -1155,6 +1156,13 @@ static int gmac_map_tx_bufs(struct net_d
word1 = skb->len;
word3 = SOF_BIT;
+ /* Determine if we are doing TCP */
+ if (skb->protocol == htons(ETH_P_IP))
+ tcp = (ip_hdr(skb)->protocol == IPPROTO_TCP);
+ else
+ /* IPv6 */
+ tcp = (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP);
+
mss = skb_shinfo(skb)->gso_size;
if (mss) {
/* This means we are dealing with TCP and skb->len is the
@@ -1167,6 +1175,20 @@ static int gmac_map_tx_bufs(struct net_d
mss, skb->len);
word1 |= TSS_MTU_ENABLE_BIT;
word3 |= mss;
+ } else if (tcp) {
+ /* Even if we are not using TSO, use the segment offloader
+ * for transferring the TCP frame: the TSO engine will deal
+ * with chopping up frames that exceed ETH_DATA_LEN which
+ * the checksumming engine cannot handle (see below) into
+ * manageable chunks. It flawlessly deals with quite big
+ * frames and frames containing custom DSA EtherTypes.
+ */
+ mss = netdev->mtu + skb_tcp_all_headers(skb);
+ mss = min(mss, skb->len);
+ netdev_dbg(netdev, "botched TSO len %04x mtu %04x mss %04x\n",
+ skb->len, netdev->mtu, mss);
+ word1 |= TSS_MTU_ENABLE_BIT;
+ word3 |= mss;
} else if (skb->len >= ETH_FRAME_LEN) {
/* Hardware offloaded checksumming isn't working on frames
* bigger than 1514 bytes. A hypothesis about this is that the
@@ -1185,21 +1207,16 @@ static int gmac_map_tx_bufs(struct net_d
}
if (skb->ip_summed == CHECKSUM_PARTIAL) {
- int tcp = 0;
-
/* We do not switch off the checksumming on non TCP/UDP
* frames: as is shown from tests, the checksumming engine
* is smart enough to see that a frame is not actually TCP
* or UDP and then just pass it through without any changes
* to the frame.
*/
- if (skb->protocol == htons(ETH_P_IP)) {
+ if (skb->protocol == htons(ETH_P_IP))
word1 |= TSS_IP_CHKSUM_BIT;
- tcp = ip_hdr(skb)->protocol == IPPROTO_TCP;
- } else { /* IPv6 */
+ else
word1 |= TSS_IPV6_ENABLE_BIT;
- tcp = ipv6_hdr(skb)->nexthdr == IPPROTO_TCP;
- }
word1 |= tcp ? TSS_TCP_CHKSUM_BIT : TSS_UDP_CHKSUM_BIT;
}

36
target/linux/gemini/patches-6.6/0006-net-ethernet-cortina-Rename-adjust-link-callback.patch Normal file
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@@ -0,0 +1,36 @@
From fa01c904b844e6033445f75b0b4d46a8e83b6086 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Fri, 10 May 2024 19:48:27 +0200
Subject: [PATCH 3/5] net: ethernet: cortina: Rename adjust link callback
The callback passed to of_phy_get_and_connect() in the
Cortina Gemini driver is called "gmac_speed_set" which is
archaic, rename it to "gmac_adjust_link" following the
pattern of most other drivers.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/net/ethernet/cortina/gemini.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/cortina/gemini.c
+++ b/drivers/net/ethernet/cortina/gemini.c
@@ -288,7 +288,7 @@ static void gmac_set_flow_control(struct
spin_unlock_irqrestore(&port->config_lock, flags);
}
-static void gmac_speed_set(struct net_device *netdev)
+static void gmac_adjust_link(struct net_device *netdev)
{
struct gemini_ethernet_port *port = netdev_priv(netdev);
struct phy_device *phydev = netdev->phydev;
@@ -367,7 +367,7 @@ static int gmac_setup_phy(struct net_dev
phy = of_phy_get_and_connect(netdev,
dev->of_node,
- gmac_speed_set);
+ gmac_adjust_link);
if (!phy)
return -ENODEV;
netdev->phydev = phy;

46
target/linux/gemini/patches-6.6/0007-net-ethernet-cortina-Use-negotiated-TX-RX-pause.patch Normal file
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@@ -0,0 +1,46 @@
From 50ac9765c674bac803719c6b8294670edc6df31d Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Fri, 10 May 2024 19:44:39 +0200
Subject: [PATCH 4/5] net: ethernet: cortina: Use negotiated TX/RX pause
Instead of directly poking into registers of the PHY, use
the existing function to query phylib about this directly.
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/net/ethernet/cortina/gemini.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)
--- a/drivers/net/ethernet/cortina/gemini.c
+++ b/drivers/net/ethernet/cortina/gemini.c
@@ -293,8 +293,8 @@ static void gmac_adjust_link(struct net_
struct gemini_ethernet_port *port = netdev_priv(netdev);
struct phy_device *phydev = netdev->phydev;
union gmac_status status, old_status;
- int pause_tx = 0;
- int pause_rx = 0;
+ bool pause_tx = false;
+ bool pause_rx = false;
status.bits32 = readl(port->gmac_base + GMAC_STATUS);
old_status.bits32 = status.bits32;
@@ -329,14 +329,9 @@ static void gmac_adjust_link(struct net_
}
if (phydev->duplex == DUPLEX_FULL) {
- u16 lcladv = phy_read(phydev, MII_ADVERTISE);
- u16 rmtadv = phy_read(phydev, MII_LPA);
- u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
-
- if (cap & FLOW_CTRL_RX)
- pause_rx = 1;
- if (cap & FLOW_CTRL_TX)
- pause_tx = 1;
+ phy_get_pause(phydev, &pause_tx, &pause_rx);
+ netdev_dbg(netdev, "set negotiated pause params pause TX = %s, pause RX = %s\n",
+ pause_tx ? "ON" : "OFF", pause_rx ? "ON" : "OFF");
}
gmac_set_flow_control(netdev, pause_tx, pause_rx);

46
target/linux/gemini/patches-6.6/0008-net-ethernet-cortina-Implement-.set_pauseparam.patch Normal file
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@@ -0,0 +1,46 @@
From 4eed4b87f17d10b7586349c13c3a30f9c24c9ba4 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Wed, 8 May 2024 23:21:17 +0200
Subject: [PATCH 5/5] net: ethernet: cortina: Implement .set_pauseparam()
The Cortina Gemini ethernet can very well set up TX or RX
pausing, so add this functionality to the driver in a
.set_pauseparam() callback. Essentially just call down to
phylib and let phylib deal with this, .adjust_link()
will respect the setting from phylib.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/net/ethernet/cortina/gemini.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
--- a/drivers/net/ethernet/cortina/gemini.c
+++ b/drivers/net/ethernet/cortina/gemini.c
@@ -2143,6 +2143,19 @@ static void gmac_get_pauseparam(struct n
pparam->autoneg = true;
}
+static int gmac_set_pauseparam(struct net_device *netdev,
+ struct ethtool_pauseparam *pparam)
+{
+ struct phy_device *phydev = netdev->phydev;
+
+ if (!pparam->autoneg)
+ return -EOPNOTSUPP;
+
+ phy_set_asym_pause(phydev, pparam->rx_pause, pparam->tx_pause);
+
+ return 0;
+}
+
static void gmac_get_ringparam(struct net_device *netdev,
struct ethtool_ringparam *rp,
struct kernel_ethtool_ringparam *kernel_rp,
@@ -2263,6 +2276,7 @@ static const struct ethtool_ops gmac_351
.set_link_ksettings = gmac_set_ksettings,
.nway_reset = gmac_nway_reset,
.get_pauseparam = gmac_get_pauseparam,
+ .set_pauseparam = gmac_set_pauseparam,
.get_ringparam = gmac_get_ringparam,
.set_ringparam = gmac_set_ringparam,
.get_coalesce = gmac_get_coalesce,

37
target/linux/gemini/patches-6.6/300-ARM-dts-Augment-DIR-685-partition-table-for-OpenWrt.patch Normal file
View File

@@ -0,0 +1,37 @@
From c1aa34cd568bc7b86b82353034070c32b6ebe6db Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Mon, 11 Mar 2019 15:44:29 +0100
Subject: [PATCH] ARM: dts: Augment DIR-685 partition table for OpenWrt
Rename the firmware partition so that the firmware MTD
splitter will do its job, drop the rootfs arguments as
the MTD splitter will set this up automatically.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
arch/arm/boot/dts/gemini/gemini-dlink-dir-685.dts | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/arch/arm/boot/dts/gemini/gemini-dlink-dir-685.dts
+++ b/arch/arm/boot/dts/gemini/gemini-dlink-dir-685.dts
@@ -20,7 +20,7 @@
};
chosen {
- bootargs = "console=ttyS0,19200n8 root=/dev/sda1 rw rootwait consoleblank=300";
+ bootargs = "console=ttyS0,19200n8 consoleblank=300";
stdout-path = "uart0:19200n8";
};
@@ -317,9 +317,9 @@
* this is called "upgrade" on the vendor system.
*/
partition@40000 {
- label = "upgrade";
+ compatible = "wrg";
+ label = "firmware";
reg = <0x00040000 0x01f40000>;
- read-only;
};
/* RGDB, Residental Gateway Database? */
partition@1f80000 {