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2025-04-16net/netmon: publish events to event busDavid Anderson1-1/+5
Updates #15160 Signed-off-by: David Anderson <dave@tailscale.com>
2025-01-09all: illumos/solaris userspace only supportNahum Shalman1-0/+26
Updates #14565 Change-Id: I743148144938794db0a224873ce76c10dbe6fa5f Signed-off-by: Nahum Shalman <nahamu@gmail.com>
2024-09-26{ipn,net,tsnet}: use tsaddr helpersKristoffer Dalby1-11/+6
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
2024-07-10all: add test for package comments, fix, add comments as neededBrad Fitzpatrick1-1/+0
Updates #cleanup Change-Id: Ic4304e909d2131a95a38b26911f49e7b1729aaef Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-06-27cmd/xdpderper: add autodetection for default interface nameJames Tucker2-0/+89
This makes deployment easier in hetrogenous environments. Updates ENG-4274 Signed-off-by: James Tucker <james@tailscale.com>
2024-04-28net/netmon, add: add netmon.State type alias of interfaces.StateBrad Fitzpatrick1-4/+4
... in prep for merging the net/interfaces package into net/netmon. This is a no-op change that updates a bunch of the API signatures ahead of a future change to actually move things (and remove the type alias) Updates tailscale/corp#10910 Updates tailscale/corp#18960 Updates #7967 Updates #3299 Change-Id: I477613388f09389214db0d77ccf24a65bff2199c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-04-26net/netutil: remove a use of deprecated interfaces.GetStateBrad Fitzpatrick2-8/+11
I'm working on moving all network state queries to be on netmon.Monitor, removing old APIs. Updates tailscale/corp#10910 Updates tailscale/corp#18960 Updates #7967 Updates #3299 Change-Id: If0de137e0e2e145520f69e258597fb89cf39a2a3 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-02-27health: warn about reverse path filtering and exit nodesAnton Tolchanov2-12/+3
When reverse path filtering is in strict mode on Linux, using an exit node blocks all network connectivity. This change adds a warning about this to `tailscale status` and the logs. Example in `tailscale status`: ``` - not connected to home DERP region 22 - The following issues on your machine will likely make usage of exit nodes impossible: [interface "eth0" has strict reverse-path filtering enabled], please set rp_filter=2 instead of rp_filter=1; see https://github.com/tailscale/tailscale/issues/3310 ``` Example in the logs: ``` 2024/02/21 21:17:07 health("overall"): error: multiple errors: not in map poll The following issues on your machine will likely make usage of exit nodes impossible: [interface "eth0" has strict reverse-path filtering enabled], please set rp_filter=2 instead of rp_filter=1; see https://github.com/tailscale/tailscale/issues/3310 ``` Updates #3310 Signed-off-by: Anton Tolchanov <anton@tailscale.com>
2024-01-09net/netutil: allow 16-bit 4via6 site IDsAndrew Dunham1-4/+5
The prefix has space for 32-bit site IDs, but the validateViaPrefix function would previously have disallowed site IDs greater than 255. Fixes tailscale/corp#16470 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I4cdb0711dafb577fae72d86c4014cf623fa538ef
2023-12-21all: cleanup unused code, part 2 (#10670)Andrew Lytvynov1-6/+0
And enable U1000 check in staticcheck. Updates #cleanup Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
2023-12-20net/netutil: add function to check rp_filter value (#5703)Andrew Dunham2-0/+128
Updates #4432 Change-Id: Ifc332a5747fc1feffdbb87437308cf8ecb21b0b0 Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
2023-08-09cmd/tailscale: refactor shared utility methodsWill Norris1-0/+93
Refactor two shared functions used by the tailscale cli, calcAdvertiseRoutes and licensesURL. These are used by the web client as well as other tailscale subcommands. The web client is being moved out of the cli package, so move these two functions to new locations. Updates tailscale/corp#13775 Signed-off-by: Will Norris <will@tailscale.com>
2023-08-01ipnlocal, net/*: deprecate interfaces.GetState, use netmon more for itBrad Fitzpatrick1-7/+3
Updates #cleanup Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-06-27net/netutil: parse IP forwarding val as int, not bool (#8455)Ross Zurowski1-1/+8
This commit updates our IP forwarding parsing logic to allow the less common but still valid value of `2` to be parsed as `true`, which fixes an error some users encountered. Fixes #8375 Signed-off-by: Ross Zurowski <ross@rosszurowski.com>
2023-03-13all: replace /kb/ links with /s/ equivalentsMaisem Ali1-1/+1
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-02-08net/netutil: only check Linux sysctls w/ procfs, assume absent means falseBrad Fitzpatrick2-13/+27
Fixes #7217 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-01-27all: update copyright and license headersWill Norris3-9/+6
This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>
2022-09-29all: fix spelling mistakesJosh Soref1-1/+1
Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
2022-07-25all: convert more code to use net/netip directlyBrad Fitzpatrick1-4/+4
perl -i -npe 's,netaddr.IPPrefixFrom,netip.PrefixFrom,' $(git grep -l -F netaddr.) perl -i -npe 's,netaddr.IPPortFrom,netip.AddrPortFrom,' $(git grep -l -F netaddr. ) perl -i -npe 's,netaddr.IPPrefix,netip.Prefix,g' $(git grep -l -F netaddr. ) perl -i -npe 's,netaddr.IPPort,netip.AddrPort,g' $(git grep -l -F netaddr. ) perl -i -npe 's,netaddr.IP\b,netip.Addr,g' $(git grep -l -F netaddr. ) perl -i -npe 's,netaddr.IPv6Raw\b,netip.AddrFrom16,g' $(git grep -l -F netaddr. ) goimports -w . Then delete some stuff from the net/netaddr shim package which is no longer neeed. Updates #5162 Change-Id: Ia7a86893fe21c7e3ee1ec823e8aba288d4566cd8 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-07-25net/netaddr: start migrating to net/netip via new netaddr adapter packageBrad Fitzpatrick1-4/+4
Updates #5162 Change-Id: Id7bdec303b25471f69d542f8ce43805328d56c12 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-03-28net/netutil: add CheckIPForwardingLinux (#4301)Maisem Ali1-0/+221
Combine the code between `LocalBackend.CheckIPForwarding` and `controlclient.ipForwardingBroken`. Fixes #4300 Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-03-24net/netutil: move some net utils from control/controlhttp to netutilBrad Fitzpatrick1-0/+53
In prep for reuse elsewhere. Change-Id: I1b804edf76ac66b9108e6f434e77eab7a7472d69 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-22net/netutil: fix regression where peerapi would get closed after 1st reqBrad Fitzpatrick2-14/+83
I introduced a bug in 8fe503057da26 when unifying oneConnListener implementations. The NewOneConnListenerFrom API was easy to misuse (its Close method closes the underlying Listener), and we did (via http.Serve, which closes the listener after use, which meant we were close the peerapi's listener, even though we only wanted its Addr) Instead, combine those two constructors into one and pass in the Addr explicitly, without delegating through to any Listener. Change-Id: I061d7e5f842e0cada416e7b2dd62100d4f987125 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-02-13net/netutil: unify two oneConnListeners into a new packageBrad Fitzpatrick1-0/+50
I was about to add a third copy, so unify them now instead. Change-Id: I3b93896aa1249b1250a6b1df4829d57717f2311a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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