Commit Graph

4 Commits

Author SHA1 Message Date
Brad Fitzpatrick
88cc0ad9f7 util/linuxfw: remove yet-unused code to fix linux/arm64 crash
The util/linuxfw/iptables.go had a bunch of code that wasn't yet used
(in prep for future work) but because of its imports, ended up
initializing code deep within gvisor that panicked on init on arm64
systems not using 4KB pages.

This deletes the unused code to delete the imports and remove the
panic. We can then cherry-pick this back to the branch and restore it
later in a different way.

A new test makes sure we don't regress in the future by depending on
the panicking package in question.

Fixes #8658

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-07-20 23:18:40 -07:00
KevinLiang10
6ebd87c669 util/linuxfw: add new arch build constraints
Exclide GOARCHs including: mips, mips64, mips64le, mipsle, riscv64.
These archs are not supported by gvisor.dev/gvisor/pkg/hostarch.

Fixes: #391
Signed-off-by: KevinLiang10 <kevinliang@tailscale.com>
2023-06-30 18:22:15 -04:00
Andrew Dunham
6927a844b1 util/linuxfw: add build constraints excluding GOARCH=arm
This isn't currently supported due to missing support in upstream
dependencies, and also we don't use this package anywhere right now.
Just conditionally skip this for now.

Fixes #7268

Change-Id: Ie7389c2c0816b39b410c02a7276051a4c18b6450
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
2023-02-14 06:00:03 +00:00
Andrew Dunham
ba48ec5e39 util/linuxfw: initial implementation of package
This package is an initial implementation of something that can read
netfilter and iptables rules from the Linux kernel without needing to
shell out to an external utility; it speaks directly to the kernel using
syscalls and parses the data returned.

Currently this is read-only since it only knows how to parse a subset of
the available data.

Signed-off-by: Andrew Dunham <andrew@tailscale.com>
Change-Id: Iccadf5dcc081b73268d8ccf8884c24eb6a6f1ff5
2023-02-09 14:20:24 -05:00