diff options
| -rw-r--r-- | pkg/tcpip/network/ipv4/ipv4_test.go | 22 | ||||
| -rw-r--r-- | pkg/tcpip/network/ipv6/ipv6_test.go | 63 |
2 files changed, 76 insertions, 9 deletions
diff --git a/pkg/tcpip/network/ipv4/ipv4_test.go b/pkg/tcpip/network/ipv4/ipv4_test.go index 2e96dabfe..9b660eef0 100644 --- a/pkg/tcpip/network/ipv4/ipv4_test.go +++ b/pkg/tcpip/network/ipv4/ipv4_test.go @@ -2424,6 +2424,28 @@ func TestReceiveFragments(t *testing.T) { }, expectedPayloads: [][]byte{udpPayload4Addr1ToAddr2}, }, + { + name: "Two fragments with MF flag reassembled into a maximum UDP packet", + fragments: []fragmentData{ + { + srcAddr: addr1, + dstAddr: addr2, + id: 1, + flags: header.IPv4FlagMoreFragments, + fragmentOffset: 0, + payload: ipv4Payload4Addr1ToAddr2[:65512], + }, + { + srcAddr: addr1, + dstAddr: addr2, + id: 1, + flags: header.IPv4FlagMoreFragments, + fragmentOffset: 65512, + payload: ipv4Payload4Addr1ToAddr2[65512:], + }, + }, + expectedPayloads: nil, + }, } for _, test := range tests { diff --git a/pkg/tcpip/network/ipv6/ipv6_test.go b/pkg/tcpip/network/ipv6/ipv6_test.go index 674469697..73d2abd31 100644 --- a/pkg/tcpip/network/ipv6/ipv6_test.go +++ b/pkg/tcpip/network/ipv6/ipv6_test.go @@ -1007,9 +1007,10 @@ func TestReceiveIPv6Fragments(t *testing.T) { udpPayload2Length = 128 // Used to test cases where the fragment blocks are not a multiple of // the fragment block size of 8 (RFC 8200 section 4.5). - udpPayload3Length = 127 - udpPayload4Length = header.IPv6MaximumPayloadSize - header.UDPMinimumSize - fragmentExtHdrLen = 8 + udpPayload3Length = 127 + udpPayload4Length = header.IPv6MaximumPayloadSize - header.UDPMinimumSize + udpMaximumSizeMinus15 = header.UDPMaximumSize - 15 + fragmentExtHdrLen = 8 // Note, not all routing extension headers will be 8 bytes but this test // uses 8 byte routing extension headers for most sub tests. routingExtHdrLen = 8 @@ -1353,14 +1354,14 @@ func TestReceiveIPv6Fragments(t *testing.T) { dstAddr: addr2, nextHdr: fragmentExtHdrID, data: buffer.NewVectorisedView( - fragmentExtHdrLen+65520, + fragmentExtHdrLen+udpMaximumSizeMinus15, []buffer.View{ // Fragment extension header. // // Fragment offset = 0, More = true, ID = 1 buffer.View([]byte{uint8(header.UDPProtocolNumber), 0, 0, 1, 0, 0, 0, 1}), - ipv6Payload4Addr1ToAddr2[:65520], + ipv6Payload4Addr1ToAddr2[:udpMaximumSizeMinus15], }, ), }, @@ -1369,14 +1370,17 @@ func TestReceiveIPv6Fragments(t *testing.T) { dstAddr: addr2, nextHdr: fragmentExtHdrID, data: buffer.NewVectorisedView( - fragmentExtHdrLen+len(ipv6Payload4Addr1ToAddr2)-65520, + fragmentExtHdrLen+len(ipv6Payload4Addr1ToAddr2)-udpMaximumSizeMinus15, []buffer.View{ // Fragment extension header. // - // Fragment offset = 8190, More = false, ID = 1 - buffer.View([]byte{uint8(header.UDPProtocolNumber), 0, 255, 240, 0, 0, 0, 1}), + // Fragment offset = udpMaximumSizeMinus15/8, More = false, ID = 1 + buffer.View([]byte{uint8(header.UDPProtocolNumber), 0, + udpMaximumSizeMinus15 >> 8, + udpMaximumSizeMinus15 & 0xff, + 0, 0, 0, 1}), - ipv6Payload4Addr1ToAddr2[65520:], + ipv6Payload4Addr1ToAddr2[udpMaximumSizeMinus15:], }, ), }, @@ -1384,6 +1388,47 @@ func TestReceiveIPv6Fragments(t *testing.T) { expectedPayloads: [][]byte{udpPayload4Addr1ToAddr2}, }, { + name: "Two fragments with MF flag reassembled into a maximum UDP packet", + fragments: []fragmentData{ + { + srcAddr: addr1, + dstAddr: addr2, + nextHdr: fragmentExtHdrID, + data: buffer.NewVectorisedView( + fragmentExtHdrLen+udpMaximumSizeMinus15, + []buffer.View{ + // Fragment extension header. + // + // Fragment offset = 0, More = true, ID = 1 + buffer.View([]byte{uint8(header.UDPProtocolNumber), 0, 0, 1, 0, 0, 0, 1}), + + ipv6Payload4Addr1ToAddr2[:udpMaximumSizeMinus15], + }, + ), + }, + { + srcAddr: addr1, + dstAddr: addr2, + nextHdr: fragmentExtHdrID, + data: buffer.NewVectorisedView( + fragmentExtHdrLen+len(ipv6Payload4Addr1ToAddr2)-udpMaximumSizeMinus15, + []buffer.View{ + // Fragment extension header. + // + // Fragment offset = udpMaximumSizeMinus15/8, More = true, ID = 1 + buffer.View([]byte{uint8(header.UDPProtocolNumber), 0, + udpMaximumSizeMinus15 >> 8, + (udpMaximumSizeMinus15 & 0xff) + 1, + 0, 0, 0, 1}), + + ipv6Payload4Addr1ToAddr2[udpMaximumSizeMinus15:], + }, + ), + }, + }, + expectedPayloads: nil, + }, + { name: "Two fragments with per-fragment routing header with zero segments left", fragments: []fragmentData{ { |