openwrt/target/linux/mvebu/patches-6.1/700-mvneta-tx-queue-workaround.patch
John Audia c20bedf1f5 kernel: bump 6.1 to 6.1.64
Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.64

Removed upstreamed:
	ixp4xx/patches-6.1/0001-mtd-cfi_cmdset_0001-Byte-swap-OTP-info.patch[1]
	mvebu/patches-6.1/106-Revert-i2c-pxa-move-to-generic-GPIO-recovery.patch[2]
	qualcommax/patches-6.1/0026-v6.7-clk-qcom-ipq8074-drop-the-CLK_SET_RATE_PARENT-flag-f.patch[3]

Manually rebased:
	bcm27xx/patches-6.1/950-0111-MMC-added-alternative-MMC-driver.patch

All other patches automatically rebased.

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.1.64&id=3b93096d29c5b9ca2af94be4ee9949c1767acf17
2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.1.64&id=b3fd9db79e30d5eb5f76ef1f5b7e4f444af574ea
3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.1.64&id=877080a3490102da26b8d969588159b2385f739e

Build system: x86/64
Build-tested: x86/64/AMD Cezanne
Run-tested: x86/64/AMD Cezanne

Signed-off-by: John Audia <therealgraysky@proton.me>
2023-11-29 23:38:39 +01:00

39 lines
1.2 KiB
Diff

The hardware queue scheduling is apparently configured with fixed
priorities, which creates a nasty fairness issue where traffic from one
CPU can starve traffic from all other CPUs.
Work around this issue by forcing all tx packets to go through one CPU,
until this issue is fixed properly.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -5234,6 +5234,16 @@ static int mvneta_setup_tc(struct net_de
}
}
+#ifndef CONFIG_ARM64
+static u16 mvneta_select_queue(struct net_device *dev, struct sk_buff *skb,
+ struct net_device *sb_dev)
+{
+ /* XXX: hardware queue scheduling is broken,
+ * use only one queue until it is fixed */
+ return 0;
+}
+#endif
+
static const struct net_device_ops mvneta_netdev_ops = {
.ndo_open = mvneta_open,
.ndo_stop = mvneta_stop,
@@ -5244,6 +5254,9 @@ static const struct net_device_ops mvnet
.ndo_fix_features = mvneta_fix_features,
.ndo_get_stats64 = mvneta_get_stats64,
.ndo_eth_ioctl = mvneta_ioctl,
+#ifndef CONFIG_ARM64
+ .ndo_select_queue = mvneta_select_queue,
+#endif
.ndo_bpf = mvneta_xdp,
.ndo_xdp_xmit = mvneta_xdp_xmit,
.ndo_setup_tc = mvneta_setup_tc,