mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 02:29:01 +00:00
d374e0346e
0001-MIPS-lantiq-add-pcie-driver.patch needs to drop
MODULE_SUPPORTED_DEVICE because that macro is gone on newer kernels.
Add checks for copy_{to,from}_user in
0008-MIPS-lantiq-backport-old-timer-code.patch which is now mandatory.
0705-v5.13-net-dsa-lantiq-allow-to-use-all-GPHYs-on-xRX300-and-.patch
get dropped because it's a backport from Linux 5.13.
All other patches are refreshed.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
128 lines
4.7 KiB
Diff
128 lines
4.7 KiB
Diff
From c40bb4fedcd6b8b6a714da5dd466eb88ed2652d1 Mon Sep 17 00:00:00 2001
|
|
From: Aleksander Jan Bajkowski <olek2@wp.pl>
|
|
Date: Wed, 9 Mar 2022 00:04:57 +0100
|
|
Subject: net: dsa: lantiq_gswip: enable jumbo frames on GSWIP
|
|
|
|
This enables non-standard MTUs on a per-port basis, with the overall
|
|
frame size set based on the CPU port.
|
|
|
|
When the MTU is not changed, this should have no effect.
|
|
|
|
Long packets crash the switch with MTUs of greater than 2526, so the
|
|
maximum is limited for now. Medium packets are sometimes dropped (e.g.
|
|
TCP over 2477, UDP over 2516-2519, ICMP over 2526), Hence an MTU value
|
|
of 2400 seems safe.
|
|
|
|
Signed-off-by: Thomas Nixon <tom@tomn.co.uk>
|
|
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
|
|
Link: https://lore.kernel.org/r/20220308230457.1599237-1-olek2@wp.pl
|
|
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
---
|
|
drivers/net/dsa/lantiq_gswip.c | 53 ++++++++++++++++++++++++++++++++++++++----
|
|
1 file changed, 49 insertions(+), 4 deletions(-)
|
|
|
|
--- a/drivers/net/dsa/lantiq_gswip.c
|
|
+++ b/drivers/net/dsa/lantiq_gswip.c
|
|
@@ -213,6 +213,7 @@
|
|
#define GSWIP_MAC_CTRL_0_GMII_MII 0x0001
|
|
#define GSWIP_MAC_CTRL_0_GMII_RGMII 0x0002
|
|
#define GSWIP_MAC_CTRL_2p(p) (0x905 + ((p) * 0xC))
|
|
+#define GSWIP_MAC_CTRL_2_LCHKL BIT(2) /* Frame Length Check Long Enable */
|
|
#define GSWIP_MAC_CTRL_2_MLEN BIT(3) /* Maximum Untagged Frame Lnegth */
|
|
|
|
/* Ethernet Switch Fetch DMA Port Control Register */
|
|
@@ -239,6 +240,15 @@
|
|
|
|
#define XRX200_GPHY_FW_ALIGN (16 * 1024)
|
|
|
|
+/* Maximum packet size supported by the switch. In theory this should be 10240,
|
|
+ * but long packets currently cause lock-ups with an MTU of over 2526. Medium
|
|
+ * packets are sometimes dropped (e.g. TCP over 2477, UDP over 2516-2519, ICMP
|
|
+ * over 2526), hence an MTU value of 2400 seems safe. This issue only affects
|
|
+ * packet reception. This is probably caused by the PPA engine, which is on the
|
|
+ * RX part of the device. Packet transmission works properly up to 10240.
|
|
+ */
|
|
+#define GSWIP_MAX_PACKET_LENGTH 2400
|
|
+
|
|
struct gswip_hw_info {
|
|
int max_ports;
|
|
int cpu_port;
|
|
@@ -846,10 +856,6 @@ static int gswip_setup(struct dsa_switch
|
|
gswip_switch_mask(priv, 0, GSWIP_PCE_PCTRL_0_INGRESS,
|
|
GSWIP_PCE_PCTRL_0p(cpu_port));
|
|
|
|
- gswip_switch_mask(priv, 0, GSWIP_MAC_CTRL_2_MLEN,
|
|
- GSWIP_MAC_CTRL_2p(cpu_port));
|
|
- gswip_switch_w(priv, VLAN_ETH_FRAME_LEN + 8 + ETH_FCS_LEN,
|
|
- GSWIP_MAC_FLEN);
|
|
gswip_switch_mask(priv, 0, GSWIP_BM_QUEUE_GCTRL_GL_MOD,
|
|
GSWIP_BM_QUEUE_GCTRL);
|
|
|
|
@@ -866,6 +872,8 @@ static int gswip_setup(struct dsa_switch
|
|
return err;
|
|
}
|
|
|
|
+ ds->mtu_enforcement_ingress = true;
|
|
+
|
|
gswip_port_enable(ds, cpu_port, NULL);
|
|
|
|
ds->configure_vlan_while_not_filtering = false;
|
|
@@ -1456,6 +1464,39 @@ static void gswip_phylink_set_capab(unsi
|
|
linkmode_and(state->advertising, state->advertising, mask);
|
|
}
|
|
|
|
+static int gswip_port_max_mtu(struct dsa_switch *ds, int port)
|
|
+{
|
|
+ /* Includes 8 bytes for special header. */
|
|
+ return GSWIP_MAX_PACKET_LENGTH - VLAN_ETH_HLEN - ETH_FCS_LEN;
|
|
+}
|
|
+
|
|
+static int gswip_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
|
|
+{
|
|
+ struct gswip_priv *priv = ds->priv;
|
|
+ int cpu_port = priv->hw_info->cpu_port;
|
|
+
|
|
+ /* CPU port always has maximum mtu of user ports, so use it to set
|
|
+ * switch frame size, including 8 byte special header.
|
|
+ */
|
|
+ if (port == cpu_port) {
|
|
+ new_mtu += 8;
|
|
+ gswip_switch_w(priv, VLAN_ETH_HLEN + new_mtu + ETH_FCS_LEN,
|
|
+ GSWIP_MAC_FLEN);
|
|
+ }
|
|
+
|
|
+ /* Enable MLEN for ports with non-standard MTUs, including the special
|
|
+ * header on the CPU port added above.
|
|
+ */
|
|
+ if (new_mtu != ETH_DATA_LEN)
|
|
+ gswip_switch_mask(priv, 0, GSWIP_MAC_CTRL_2_MLEN,
|
|
+ GSWIP_MAC_CTRL_2p(port));
|
|
+ else
|
|
+ gswip_switch_mask(priv, GSWIP_MAC_CTRL_2_MLEN, 0,
|
|
+ GSWIP_MAC_CTRL_2p(port));
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
static void gswip_xrx200_phylink_validate(struct dsa_switch *ds, int port,
|
|
unsigned long *supported,
|
|
struct phylink_link_state *state)
|
|
@@ -1812,6 +1853,8 @@ static const struct dsa_switch_ops gswip
|
|
.port_fdb_add = gswip_port_fdb_add,
|
|
.port_fdb_del = gswip_port_fdb_del,
|
|
.port_fdb_dump = gswip_port_fdb_dump,
|
|
+ .port_change_mtu = gswip_port_change_mtu,
|
|
+ .port_max_mtu = gswip_port_max_mtu,
|
|
.phylink_validate = gswip_xrx200_phylink_validate,
|
|
.phylink_mac_config = gswip_phylink_mac_config,
|
|
.phylink_mac_link_down = gswip_phylink_mac_link_down,
|
|
@@ -1836,6 +1879,8 @@ static const struct dsa_switch_ops gswip
|
|
.port_fdb_add = gswip_port_fdb_add,
|
|
.port_fdb_del = gswip_port_fdb_del,
|
|
.port_fdb_dump = gswip_port_fdb_dump,
|
|
+ .port_change_mtu = gswip_port_change_mtu,
|
|
+ .port_max_mtu = gswip_port_max_mtu,
|
|
.phylink_validate = gswip_xrx300_phylink_validate,
|
|
.phylink_mac_config = gswip_phylink_mac_config,
|
|
.phylink_mac_link_down = gswip_phylink_mac_link_down,
|