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Merge pull request #76 from apernet/fix-enobufs

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fix: engine exit with "netlink receive: recvmsg: no buffer space available" when too many packets hit NFQUEUE
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Toby 2024-02-26 10:40:08 -08:00 committed by GitHub
commit b780ff65a4
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2 changed files with 8 additions and 1 deletions
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2
go.mod
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@ -16,6 +16,7 @@ require (
github.com/stretchr/testify v1.8.4
go.uber.org/zap v1.26.0
golang.org/x/crypto v0.19.0
golang.org/x/sys v0.17.0
google.golang.org/protobuf v1.31.0
gopkg.in/yaml.v3 v3.0.1
)
@ -43,7 +44,6 @@ require (
golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
golang.org/x/net v0.19.0 // indirect
golang.org/x/sync v0.5.0 // indirect
golang.org/x/sys v0.17.0 // indirect
golang.org/x/text v0.14.0 // indirect
gopkg.in/ini.v1 v1.67.0 // indirect
)

7
io/nfqueue.go
View File

@ -12,6 +12,7 @@ import (
"github.com/coreos/go-iptables/iptables"
"github.com/florianl/go-nfqueue"
"github.com/mdlayher/netlink"
"golang.org/x/sys/unix"
)
const (
@ -152,6 +153,12 @@ func (n *nfqueuePacketIO) Register(ctx context.Context, cb PacketCallback) error
return okBoolToInt(cb(p, nil))
},
func(e error) int {
if opErr := (*netlink.OpError)(nil); errors.As(e, &opErr) {
if errors.Is(opErr.Err, unix.ENOBUFS) {
// Kernel buffer temporarily full, ignore
return 0
}
}
return okBoolToInt(cb(nil, e))
})
if err != nil {