diff options
Diffstat (limited to 'pkg')
| -rw-r--r-- | pkg/tcpip/stack/iptables.go | 93 |
1 files changed, 37 insertions, 56 deletions
diff --git a/pkg/tcpip/stack/iptables.go b/pkg/tcpip/stack/iptables.go index ca1dda695..cbbae4224 100644 --- a/pkg/tcpip/stack/iptables.go +++ b/pkg/tcpip/stack/iptables.go @@ -58,8 +58,7 @@ const reaperDelay = 5 * time.Second func DefaultTables() *IPTables { return &IPTables{ tables: [numTables]Table{ - // NAT table. - Table{ + natID: Table{ Rules: []Rule{ Rule{Target: AcceptTarget{}}, Rule{Target: AcceptTarget{}}, @@ -68,22 +67,21 @@ func DefaultTables() *IPTables { Rule{Target: ErrorTarget{}}, }, BuiltinChains: [NumHooks]int{ - 0, // Prerouting. - 1, // Input. - HookUnset, // Forward. - 2, // Output. - 3, // Postrouting. + Prerouting: 0, + Input: 1, + Forward: HookUnset, + Output: 2, + Postrouting: 3, }, Underflows: [NumHooks]int{ - 0, // Prerouting. - 1, // Input. - HookUnset, // Forward. - 2, // Output. - 3, // Postrouting. + Prerouting: 0, + Input: 1, + Forward: HookUnset, + Output: 2, + Postrouting: 3, }, }, - // Mangle table. - Table{ + mangleID: Table{ Rules: []Rule{ Rule{Target: AcceptTarget{}}, Rule{Target: AcceptTarget{}}, @@ -94,15 +92,14 @@ func DefaultTables() *IPTables { Output: 1, }, Underflows: [NumHooks]int{ - 0, // Prerouting. - HookUnset, // Input. - HookUnset, // Forward. - 1, // Output. - HookUnset, // Postrouting. + Prerouting: 0, + Input: HookUnset, + Forward: HookUnset, + Output: 1, + Postrouting: HookUnset, }, }, - // Filter table. - Table{ + filterID: Table{ Rules: []Rule{ Rule{Target: AcceptTarget{}}, Rule{Target: AcceptTarget{}}, @@ -110,27 +107,25 @@ func DefaultTables() *IPTables { Rule{Target: ErrorTarget{}}, }, BuiltinChains: [NumHooks]int{ - HookUnset, // Prerouting. - Input: 0, // Input. - Forward: 1, // Forward. - Output: 2, // Output. - HookUnset, // Postrouting. + Prerouting: HookUnset, + Input: 0, + Forward: 1, + Output: 2, + Postrouting: HookUnset, }, Underflows: [NumHooks]int{ - HookUnset, // Prerouting. - 0, // Input. - 1, // Forward. - 2, // Output. - HookUnset, // Postrouting. + Prerouting: HookUnset, + Input: 0, + Forward: 1, + Output: 2, + Postrouting: HookUnset, }, }, }, priorities: [NumHooks][]tableID{ - []tableID{mangleID, natID}, // Prerouting. - []tableID{natID, filterID}, // Input. - []tableID{}, // Forward. - []tableID{mangleID, natID, filterID}, // Output. - []tableID{}, // Postrouting. + Prerouting: []tableID{mangleID, natID}, + Input: []tableID{natID, filterID}, + Output: []tableID{mangleID, natID, filterID}, }, connections: ConnTrack{ seed: generateRandUint32(), @@ -145,18 +140,12 @@ func EmptyFilterTable() Table { return Table{ Rules: []Rule{}, BuiltinChains: [NumHooks]int{ - HookUnset, - 0, - 0, - 0, - HookUnset, + Prerouting: HookUnset, + Postrouting: HookUnset, }, Underflows: [NumHooks]int{ - HookUnset, - 0, - 0, - 0, - HookUnset, + Prerouting: HookUnset, + Postrouting: HookUnset, }, } } @@ -167,18 +156,10 @@ func EmptyNATTable() Table { return Table{ Rules: []Rule{}, BuiltinChains: [NumHooks]int{ - 0, - 0, - HookUnset, - 0, - 0, + Forward: HookUnset, }, Underflows: [NumHooks]int{ - 0, - 0, - HookUnset, - 0, - 0, + Forward: HookUnset, }, } } |