31 Commits

Author SHA1 Message Date
Brad Fitzpatrick
232b928974 feature/linkspeed: move cosmetic tstun netlink code out to modular feature
Part of making all netlink monitoring code optional.

Updates #17311 (how I got started down this path)
Updates #12614

Change-Id: Ic80d8a7a44dc261c4b8678b3c2241c3b3778370d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-07 06:49:49 -07:00
Brad Fitzpatrick
316afe7d02 util/checkchange: stop using deephash everywhere
Saves 45 KB from the min build, no longer pulling in deephash or
util/hashx, both with unsafe code.

It can actually be more efficient to not use deephash, as you don't
have to walk all bytes of all fields recursively to answer that two
things are not equal. Instead, you can just return false at the first
difference you see. And then with views (as we use ~everywhere
nowadays), the cloning the old value isn't expensive, as it's just a
pointer under the hood.

Updates #12614

Change-Id: I7b08616b8a09b3ade454bb5e0ac5672086fe8aec
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-06 21:30:10 -07:00
Brad Fitzpatrick
059f53e67a feature/condlite/expvar: add expvar stub package when metrics not needed
Saves ~53 KB from the min build.

Updates #12614

Change-Id: I73f9544a9feea06027c6ebdd222d712ada851299
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-06 16:03:47 -07:00
Brad Fitzpatrick
d816454a88 feature/featuretags: make usermetrics modular
Saves ~102 KB from the min build.

Updates #12614

Change-Id: Ie1d4f439321267b9f98046593cb289ee3c4d6249
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-06 12:54:45 -07:00
Brad Fitzpatrick
3c7e351671 net/connstats: make it modular (omittable)
Saves only 12 KB, but notably removes some deps on packages that future
changes can then eliminate entirely.

Updates #12614

Change-Id: Ibf830d3ee08f621d0a2011b1d4cd175427ef50df
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-04 13:17:25 -07:00
Brad Fitzpatrick
1d93bdce20 control/controlclient: remove x/net/http2, use net/http
Saves 352 KB, removing one of our two HTTP/2 implementations linked
into the binary.

Fixes #17305
Updates #15015

Change-Id: I53a04b1f2687dca73c8541949465038b69aa6ade
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-02 08:25:14 -07:00
Brad Fitzpatrick
c45f8813b4 feature/featuretags, all: add build features, use existing ones in more places
Saves 270 KB.

Updates #12614

Change-Id: I4c3fe06d32c49edb3a4bb0758a8617d83f291cf5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-02 08:07:25 -07:00
Brad Fitzpatrick
c2f37c891c all: use Go 1.20's errors.Join instead of our multierr package
Updates #7123

Change-Id: Ie9be6814831f661ad5636afcd51d063a0d7a907d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-01 08:10:59 -07:00
Brad Fitzpatrick
5b09913d64 ipn/ipnlocal, engine: avoid runtime/pprof with two usages of ts_omit_debug
Saves 258 KB.

Updates #12614

Change-Id: I37c2f7f916480e3534883f338de4c64d08f7ef2b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30 14:58:25 -07:00
Brad Fitzpatrick
f7afb9b6ca feature/featuretags, ipn/conffile: make HuJSON support in config files optional
Saves 33 KB.

Updates #12614

Change-Id: Ie701c230e0765281f409f29ed263910b9be9cc77
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30 14:32:55 -07:00
Brad Fitzpatrick
9386a101d8 cmd/tailscaled, ipn/localapi, util/eventbus: don't link in regexp when debug is omitted
Saves 442 KB. Lock it with a new min test.

Updates #12614

Change-Id: Ia7bf6f797b6cbf08ea65419ade2f359d390f8e91
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30 12:13:17 -07:00
Brad Fitzpatrick
442a3a779d feature, net/tshttpproxy: pull out support for using proxies as a feature
Saves 139 KB.

Also Synology support, which I saw had its own large-ish proxy parsing
support on Linux, but support for proxies without Synology proxy
support is reasonable, so I pulled that out as its own thing.

Updates #12614

Change-Id: I22de285a3def7be77fdcf23e2bec7c83c9655593
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30 10:25:56 -07:00
Brad Fitzpatrick
87ee0f4e98 ipn/ipnlocal: move last unconditional gvisor import, complete ts_omit_netstack support
Fixes #17283

Change-Id: Ia84d269683e4a68d7d10562561204934eeaf53bb
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-26 14:00:12 -07:00
Brad Fitzpatrick
b3ae1cb0cc wgengine/netstack/gro: permit building without GRO
This only saves ~32KB in the minimal linux/amd64 binary, but it's a
step towards permitting not depending on gvisor for small builds.

Updates #17283

Change-Id: Iae8da5e9465127de354dbcaf25e794a6832d891b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-26 09:07:48 -07:00
Brad Fitzpatrick
45d635cc98 feature/portlist: pull portlist service porting into extension, use eventbus
And yay: tsnet (and thus k8s-operator etc) no longer depends on
portlist! And LocalBackend is smaller.

Removes 50 KB from the minimal binary.

Updates #12614

Change-Id: Iee04057053dc39305303e8bd1d9599db8368d926
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-25 12:19:03 -07:00
Brad Fitzpatrick
21dc5f4e21 derp/derpserver: split off derp.Server out of derp into its own package
This exports a number of things from the derp (generic + client) package
to be used by the new derpserver package, as now used by cmd/derper.

And then enough other misc changes to lock in that cmd/tailscaled can
be configured to not bring in tailscale.com/client/local. (The webclient
in particular, even when disabled, was bringing it in, so that's now fixed)

Fixes #17257

Change-Id: I88b6c7958643fb54f386dd900bddf73d2d4d96d5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-24 09:19:01 -07:00
Brad Fitzpatrick
b3e9a128af net/dns, feature/featuretags: make NetworkManager, systemd-resolved, and DBus modular
Saves 360 KB (19951800 => 19591352 on linux/amd64 --extra-small --box binary)

Updates #12614
Updates #17206

Change-Id: Iafd5b2536dd735111b447546cba335a7a64379ed
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-24 08:55:32 -07:00
Brad Fitzpatrick
8fe575409f feature/featuretags: add build tag to remove captive portal detection
This doesn't yet fully pull it out into a feature/captiveportal package.
This is the usual first step, moving the code to its own files within
the same packages.

Updates #17254

Change-Id: Idfaec839debf7c96f51ca6520ce36ccf2f8eec92
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-24 08:31:13 -07:00
Brad Fitzpatrick
5e698a81b6 cmd/tailscaled: make the outbound HTTP/SOCKS5 proxy modular
Updates #12614

Change-Id: Icba6f1c0838dce6ee13aa2dc662fb551813262e4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-19 11:22:08 -07:00
Naman Sood
b9cda4bca5
tsnet,internal/client/tailscale: resolve OAuth into authkeys in tsnet (#17191)
* tsnet,internal/client/tailscale: resolve OAuth into authkeys in tsnet

Updates #8403.

* internal/client/tailscale: omit OAuth library via build tag

Updates #12614.

Signed-off-by: Naman Sood <mail@nsood.in>
2025-09-19 12:31:44 -04:00
Brad Fitzpatrick
697098ed6c ipn/ipnlocal: fix a case where ts_omit_ssh was still linking in x/crypto/ssh
And add a test.

Updates #12614

Change-Id: Icb1c77f5890def794a4938583725c1a0886b197d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-16 18:37:46 -07:00
Brad Fitzpatrick
e180fc267b feature/featuretags, all: add ts_omit_acme to disable TLS cert support
I'd started to do this in the earlier ts_omit_server PR but
decided to split it into this separate PR.

Updates #17128

Change-Id: Ief8823a78d1f7bbb79e64a5cab30a7d0a5d6ff4b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-16 14:11:15 -07:00
Brad Fitzpatrick
99b3f69126 feature/portmapper: make the portmapper & its debugging tools modular
Starting at a minimal binary and adding one feature back...
    tailscaled tailscale combined (linux/amd64)
     30073135  17451704  31543692 omitting everything
    +  480302 +   10258 +  493896 .. add debugportmapper
    +  475317 +  151943 +  467660 .. add portmapper
    +  500086 +  162873 +  510511 .. add portmapper+debugportmapper

Fixes #17148

Change-Id: I90bd0e9d1bd8cbe64fa2e885e9afef8fb5ee74b1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-16 11:35:49 -07:00
Brad Fitzpatrick
3a49b7464c all: add ts_omit_tailnetlock as a start of making it build-time modular
Updates #17115

Change-Id: I6b083c0db4c4d359e49eb129d626b7f128f0a9d2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-12 12:23:34 -07:00
Brad Fitzpatrick
a1dcf12b67 feature/drive: start factoring out Taildrive, add ts_omit_drive build tag
As of this commit (per the issue), the Taildrive code remains where it
was, but in new files that are protected by the new ts_omit_drive
build tag. Future commits will move it.

Updates #17058

Change-Id: Idf0a51db59e41ae8da6ea2b11d238aefc48b219e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-11 14:26:08 -07:00
Brad Fitzpatrick
3e4b0c1516 cmd/tailscale, ipn/ipnlocal: add ts_omit_webclient
Fixes #17063
Updates #12614

Change-Id: I0a189f6a4d1c4558351e3195839867725774fa96
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-08 12:59:42 -07:00
Brad Fitzpatrick
21f21bd2a2 util/syspolicy: finish adding ts_omit_syspolicy build tags, tests
Fixes #16998
Updates #12614

Change-Id: Idf2b1657898111df4be31f356091b2376d0d7f0b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-02 18:09:16 -07:00
Percy Wegmann
2e95313b8b ssh,tempfork/gliderlabs/ssh: replace github.com/tailscale/golang-x-crypto/ssh with golang.org/x/crypto/ssh
The upstream crypto package now supports sending banners at any time during
authentication, so the Tailscale fork of crypto/ssh is no longer necessary.

github.com/tailscale/golang-x-crypto is still needed for some custom ACME
autocert functionality.

tempfork/gliderlabs is still necessary because of a few other customizations,
mostly related to TTY handling.

Originally implemented in 46fd4e58a27495263336b86ee961ee28d8c332b7,
which was reverted in b60f6b849af1fae1cf343be98f7fb1714c9ea165 to
keep the change out of v1.80.

Updates #8593

Signed-off-by: Percy Wegmann <percy@tailscale.com>
2025-01-31 16:36:39 -06:00
Percy Wegmann
b60f6b849a Revert "ssh,tempfork/gliderlabs/ssh: replace github.com/tailscale/golang-x-crypto/ssh with golang.org/x/crypto/ssh"
This reverts commit 46fd4e58a27495263336b86ee961ee28d8c332b7.

We don't want to include this in 1.80 yet, but can add it back post 1.80.

Updates #8593

Signed-off-by: Percy Wegmann <percy@tailscale.com>
2025-01-29 10:47:45 -06:00
Percy Wegmann
46fd4e58a2 ssh,tempfork/gliderlabs/ssh: replace github.com/tailscale/golang-x-crypto/ssh with golang.org/x/crypto/ssh
The upstream crypto package now supports sending banners at any time during
authentication, so the Tailscale fork of crypto/ssh is no longer necessary.

github.com/tailscale/golang-x-crypto is still needed for some custom ACME
autocert functionality.

tempfork/gliderlabs is still necessary because of a few other customizations,
mostly related to TTY handling.

Updates #8593

Signed-off-by: Percy Wegmann <percy@tailscale.com>
2025-01-28 14:20:55 -06:00
Brad Fitzpatrick
23880eb5b0 cmd/tailscaled: support "ts_omit_ssh" build tag to remove SSH
Some environments would like to remove Tailscale SSH support for the
binary for various reasons when not needed (either for peace of mind,
or the ~1MB of binary space savings).

Updates tailscale/corp#24454
Updates #1278
Updates #12614

Change-Id: Iadd6c5a393992c254b5dc9aa9a526916f96fd07a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-11-07 16:06:59 -08:00