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types/pad32: delete package 

Use Go 1.19's new 64-bit alignment ~hidden feature instead.

Fixes #5356

Change-Id: Ifcbcb115875a7da01df3bc29e9e7feadce5bc956
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2022-10-30 20:15:30 -07:00 committed by Brad Fitzpatrick
parent 60f77ba515
commit f4ff26f577
6 changed files with 5 additions and 16 deletions
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1
cmd/derper/depaware.txt
View File

@ -64,7 +64,6 @@ tailscale.com/cmd/derper dependencies: (generated by github.com/tailscale/depawa
tailscale.com/types/logger from tailscale.com/cmd/derper+
tailscale.com/types/netmap from tailscale.com/ipn
tailscale.com/types/opt from tailscale.com/client/tailscale+
tailscale.com/types/pad32 from tailscale.com/derp
tailscale.com/types/persist from tailscale.com/ipn
tailscale.com/types/preftype from tailscale.com/ipn
tailscale.com/types/structs from tailscale.com/ipn+

1
cmd/tailscale/depaware.txt
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@ -87,7 +87,6 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
tailscale.com/types/netmap from tailscale.com/ipn
tailscale.com/types/nettype from tailscale.com/net/netcheck+
tailscale.com/types/opt from tailscale.com/net/netcheck+
tailscale.com/types/pad32 from tailscale.com/derp
tailscale.com/types/persist from tailscale.com/ipn
tailscale.com/types/preftype from tailscale.com/cmd/tailscale/cli+
tailscale.com/types/structs from tailscale.com/ipn+

1
cmd/tailscaled/depaware.txt
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@ -266,7 +266,6 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
tailscale.com/types/netmap from tailscale.com/control/controlclient+
tailscale.com/types/nettype from tailscale.com/wgengine/magicsock+
tailscale.com/types/opt from tailscale.com/control/controlclient+
tailscale.com/types/pad32 from tailscale.com/derp
tailscale.com/types/persist from tailscale.com/control/controlclient+
tailscale.com/types/preftype from tailscale.com/ipn+
tailscale.com/types/structs from tailscale.com/control/controlclient+

7
derp/derp_server.go
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@ -42,7 +42,6 @@ import (
"tailscale.com/metrics"
"tailscale.com/types/key"
"tailscale.com/types/logger"
"tailscale.com/types/pad32"
"tailscale.com/version"
)
@ -89,6 +88,8 @@ const (
disableFighters
)
type align64 [0]atomic.Int64 // for side effect of its 64-bit alignment
// Server is a DERP server.
type Server struct {
// WriteTimeout, if non-zero, specifies how long to wait
@ -111,14 +112,14 @@ type Server struct {
packetsRecvByKind metrics.LabelMap
packetsRecvDisco *expvar.Int
packetsRecvOther *expvar.Int
_ pad32.Four
_ align64
packetsDropped expvar.Int
packetsDroppedReason metrics.LabelMap
packetsDroppedReasonCounters []*expvar.Int // indexed by dropReason
packetsDroppedType metrics.LabelMap
packetsDroppedTypeDisco *expvar.Int
packetsDroppedTypeOther *expvar.Int
_ pad32.Four
_ align64
packetsForwardedOut expvar.Int
packetsForwardedIn expvar.Int
peerGoneFrames expvar.Int // number of peer gone frames sent

2
net/tstun/wrap.go
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@ -82,7 +82,7 @@ type Wrapper struct {
// lastActivityAtomic is read/written atomically.
// On 32 bit systems, if the fields above change,
// you might need to add a pad32.Four field here.
// you might need to add an align64 field here.
lastActivityAtomic mono.Time // time of last send or receive
destIPActivity syncs.AtomicValue[map[netip.Addr]func()]

9
types/pad32/pad32.go
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@ -1,9 +0,0 @@
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package pad32 defines padding types that have width on only 32-bit platforms.
package pad32
// Four is 4 bytes of padding on 32-bit machines, else 0 bytes.
type Four [4 * (1 - ((^uint(0))>>32)&1)]byte