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GSO/GRO offloads, with TCP+ECN and UDP support

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This commit is contained in:
JackDoan
2026-04-17 10:25:05 -05:00
parent 4b4331ba42
commit 6a46a2913a
60 changed files with 6915 additions and 283 deletions
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6
firewall/cache.go
View File

@@ -5,6 +5,8 @@ import (
"log/slog"
"sync/atomic"
"time"
"github.com/slackhq/nebula/logging"
)
// ConntrackCache is used as a local routine cache to know if a given flow
@@ -56,8 +58,8 @@ func (c *ConntrackCacheTicker) Get() ConntrackCache {
if tick := c.cacheTick.Load(); tick != c.cacheV {
c.cacheV = tick
if ll := len(c.cache); ll > 0 {
if c.l.Enabled(context.Background(), slog.LevelDebug) {
c.l.Debug("resetting conntrack cache", "len", ll)
if c.l.Enabled(context.Background(), logging.LevelTrace) {
c.l.Log(context.Background(), logging.LevelTrace, "resetting conntrack cache", "len", ll)
}
c.cache = make(ConntrackCache, ll)
}

15
firewall/cache_test.go
View File

@@ -6,6 +6,7 @@ import (
"strings"
"testing"
"github.com/slackhq/nebula/logging"
"github.com/slackhq/nebula/test"
"github.com/stretchr/testify/assert"
)
@@ -30,27 +31,27 @@ func newFixedTicker(t *testing.T, l *slog.Logger, cacheLen int) *ConntrackCacheT
func TestConntrackCacheTicker_Get_TextFormat(t *testing.T) {
buf := &bytes.Buffer{}
l := test.NewLoggerWithOutputAndLevel(buf, slog.LevelDebug)
l := test.NewLoggerWithOutputAndLevel(buf, logging.LevelTrace)
c := newFixedTicker(t, l, 3)
c.Get()
assert.Equal(t, "level=DEBUG msg=\"resetting conntrack cache\" len=3\n", buf.String())
assert.Equal(t, "level=DEBUG-4 msg=\"resetting conntrack cache\" len=3\n", buf.String())
}
func TestConntrackCacheTicker_Get_JSONFormat(t *testing.T) {
buf := &bytes.Buffer{}
l := test.NewJSONLoggerWithOutput(buf, slog.LevelDebug)
l := test.NewJSONLoggerWithOutput(buf, logging.LevelTrace)
c := newFixedTicker(t, l, 2)
c.Get()
assert.JSONEq(t, `{"level":"DEBUG","msg":"resetting conntrack cache","len":2}`, strings.TrimSpace(buf.String()))
assert.JSONEq(t, `{"level":"DEBUG-4","msg":"resetting conntrack cache","len":2}`, strings.TrimSpace(buf.String()))
}
func TestConntrackCacheTicker_Get_QuietBelowDebug(t *testing.T) {
func TestConntrackCacheTicker_Get_QuietBelowTrace(t *testing.T) {
buf := &bytes.Buffer{}
l := test.NewLoggerWithOutputAndLevel(buf, slog.LevelInfo)
l := test.NewLoggerWithOutputAndLevel(buf, slog.LevelDebug)
c := newFixedTicker(t, l, 5)
c.Get()
@@ -60,7 +61,7 @@ func TestConntrackCacheTicker_Get_QuietBelowDebug(t *testing.T) {
func TestConntrackCacheTicker_Get_QuietWhenCacheEmpty(t *testing.T) {
buf := &bytes.Buffer{}
l := test.NewLoggerWithOutputAndLevel(buf, slog.LevelDebug)
l := test.NewLoggerWithOutputAndLevel(buf, logging.LevelTrace)
c := newFixedTicker(t, l, 0)
c.Get()