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disable offloads by default for first release (#1858)

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This commit is contained in:
Jack Doan
2026-08-24 12:33:08 -05:00
committed by GitHub
parent 9c5d701648
commit 19e04db115
3 changed files with 4 additions and 4 deletions
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examples/config.yml
+2 -2
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@@ -173,7 +173,7 @@ listen:
# This setting is reloadable. # This setting is reloadable.
#so_mark: 0 #so_mark: 0
# the udp_offloads setting controls if Nebula will attempt to enable GSO and GRO for its UDP socket(s). Linux only, not reloadable. # the udp_offloads setting controls if Nebula will attempt to enable GSO and GRO for its UDP socket(s). Linux only, not reloadable.
# udp_offloads: true # udp_offloads: false
# Routines is the number of thread pairs to run that consume from the tun and UDP queues. # Routines is the number of thread pairs to run that consume from the tun and UDP queues.
# Currently, this defaults to 1 which means we have 1 tun queue reader and 1 # Currently, this defaults to 1 which means we have 1 tun queue reader and 1
@@ -268,7 +268,7 @@ tun:
mtu: 1300 mtu: 1300
# the use_offloads setting controls if Nebula will attempt to enable GSO and GRO for the tun device. Linux only, not reloadable. # the use_offloads setting controls if Nebula will attempt to enable GSO and GRO for the tun device. Linux only, not reloadable.
#use_offloads: true #use_offloads: false
# Linux only. pin_threads pins each tun reader/encrypt OS thread to a single CPU. This keeps every goroutine's # Linux only. pin_threads pins each tun reader/encrypt OS thread to a single CPU. This keeps every goroutine's
# batched sends flowing through one XPS-selected NIC TX ring, so packets within a flow stay ordered on the wire # batched sends flowing through one XPS-selected NIC TX ring, so packets within a flow stay ordered on the wire
main.go
+1 -1
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@@ -188,7 +188,7 @@ func Main(c *config.C, configTest bool, buildVersion string, l *slog.Logger, dev
Listen: listen, Listen: listen,
Multi: routines > 1, Multi: routines > 1,
Batch: batchSize, Batch: batchSize,
Offloads: c.GetBool("listen.udp_offloads", true), Offloads: c.GetBool("listen.udp_offloads", false),
} }
udpServer, err := udp.NewListener(l, udpSettings) udpServer, err := udp.NewListener(l, udpSettings)
if err != nil { if err != nil {
overlay/tun_linux.go
+1 -1
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@@ -133,7 +133,7 @@ func newTun(c *config.C, l *slog.Logger, vpnNetworks []netip.Prefix, multiqueue
baseFlags |= unix.IFF_MULTI_QUEUE baseFlags |= unix.IFF_MULTI_QUEUE
} }
nameStr := c.GetString("tun.dev", "") nameStr := c.GetString("tun.dev", "")
useOffloads := c.GetBool("tun.use_offloads", true) useOffloads := c.GetBool("tun.use_offloads", false)
var fd int var fd int
var name string var name string