openwrt/target/linux/generic/hack-6.6/600-net-enable-fraglist-GRO-by-default.patch
Felix Fietkau b5c53848c3 kernel: improve GRO performance
For packets not belonging to a local socket, use fraglist GRO instead of
regular GRO. This make segmenting packets very cheap and avoids the need for
selectively disabling GRO

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2024-04-26 06:31:27 +02:00

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From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 23 Apr 2024 12:35:21 +0200
Subject: [PATCH] net: enable fraglist GRO by default
This can significantly improve performance for packet forwarding/bridging
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -242,10 +242,10 @@ static inline int find_next_netdev_featu
#define NETIF_F_UPPER_DISABLES NETIF_F_LRO
/* changeable features with no special hardware requirements */
-#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)
+#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO | NETIF_F_GRO_FRAGLIST)
/* Changeable features with no special hardware requirements that defaults to off. */
-#define NETIF_F_SOFT_FEATURES_OFF (NETIF_F_GRO_FRAGLIST | NETIF_F_GRO_UDP_FWD)
+#define NETIF_F_SOFT_FEATURES_OFF (NETIF_F_GRO_UDP_FWD)
#define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \
NETIF_F_HW_VLAN_CTAG_RX | \