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tsconst, util/linuxfw, wgengine/router: move Linux fw consts to tsconst

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Now cmd/derper doesn't depend on iptables, nftables, and netlink code :)

But this is really just a cleanup step I noticed on the way to making
tsnet applications able to not link all the OS router code which they
don't use.

Updates #17313

Change-Id: Ic7b4e04e3a9639fd198e9dbeb0f7bae22a4a47a9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2025-09-27 13:07:05 -07:00
committed by Brad Fitzpatrick
parent f19409482d
commit 475b520aa2
15 changed files with 94 additions and 82 deletions
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4
net/netns/netns_linux.go
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@@ -15,8 +15,8 @@ import (
"golang.org/x/sys/unix"
"tailscale.com/envknob"
"tailscale.com/net/netmon"
"tailscale.com/tsconst"
"tailscale.com/types/logger"
"tailscale.com/util/linuxfw"
)
// socketMarkWorksOnce is the sync.Once & cached value for useSocketMark.
@@ -111,7 +111,7 @@ func controlC(network, address string, c syscall.RawConn) error {
}
func setBypassMark(fd uintptr) error {
if err := unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_MARK, linuxfw.TailscaleBypassMarkNum); err != nil {
if err := unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_MARK, tsconst.LinuxBypassMarkNum); err != nil {
return fmt.Errorf("setting SO_MARK bypass: %w", err)
}
return nil