Documentation
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Overview ¶
Package fragmentation contains the implementation of IP fragmentation. It is based on RFC 791 and RFC 815.
Package ilist provides the implementation of intrusive linked lists.
Index ¶
Constants ¶
const DefaultReassembleTimeout = 5 * time.Minute
DefaultReassembleTimeout is based on the reassembling timeout suggest in RFC 791 (4.25 minutes).
const MemoryLimit = 8 * 1024 * 1024 // 8MB
MemoryLimit is a suggested value for the limit on the memory used to reassemble packets.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Fragmentation ¶
type Fragmentation struct {
// contains filtered or unexported fields
}
Fragmentation is the main structure that other modules of the stack should use to implement IP Fragmentation.
func NewFragmentation ¶
func NewFragmentation(memoryLimit int, reassemblingTimeout time.Duration) Fragmentation
NewFragmentation creates a new Fragmentation.
memoryLimit specifies the limit on the memory consumed by the fragments stored by Fragmentation (overhead of internal data-structures is not accounted). Fragments are dropped when the limit is reached.
reassemblingTimeout specifes the maximum time allowed to reassemble a packet. Fragments are lazily evicted only when a new a packet with an already existing fragmentation-id arrives after the timeout.
func (*Fragmentation) Process ¶
func (f *Fragmentation) Process(id uint32, first, last uint16, more bool, vv *buffer.VectorisedView) (buffer.VectorisedView, bool)
Process processes an incoming fragment beloning to an ID and returns a complete packet when all the packets belonging to that ID have been received.
Source Files