kytos /
of_core
| @@ 651-680 (lines=30) @@ | ||
| 648 | return cls(value) |
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| 649 | ||
| 650 | ||
| 651 | class MatchEXTHDR(MatchField): |
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| 652 | """Match for IPV6 EXTHDR.""" |
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| 653 | ||
| 654 | name = 'v6_hdr' |
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| 655 | oxm_field = OxmOfbMatchField.OFPXMT_OFB_IPV6_EXTHDR |
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| 656 | ||
| 657 | def as_of_tlv(self): |
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| 658 | """Return a pyof OXM TLV instance.""" |
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| 659 | try: |
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| 660 | value = int(self.value) |
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| 661 | mask = None |
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| 662 | oxm_hasmask = False |
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| 663 | except ValueError: |
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| 664 | value, mask = map(int, self.value.split('/')) |
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| 665 | oxm_hasmask = True |
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| 666 | value_bytes = value.to_bytes(2, 'big') |
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| 667 | if mask: |
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| 668 | value_bytes += mask.to_bytes(2, 'big') |
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| 669 | return OxmTLV(oxm_field=self.oxm_field, |
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| 670 | oxm_hasmask=oxm_hasmask, |
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| 671 | oxm_value=value_bytes) |
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| 672 | ||
| 673 | @classmethod |
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| 674 | def from_of_tlv(cls, tlv): |
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| 675 | """Return an instance from a pyof OXM TLV.""" |
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| 676 | value = int.from_bytes(tlv.oxm_value[:2], 'big') |
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| 677 | if tlv.oxm_hasmask: |
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| 678 | exhead_mask = int.from_bytes(tlv.oxm_value[2:], 'big') |
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| 679 | value = f'{value}/{exhead_mask}' |
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| 680 | return cls(value) |
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| 681 | ||
| 682 | ||
| 683 | class MatchFieldFactory(ABC): |
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| @@ 619-648 (lines=30) @@ | ||
| 616 | return cls(tll) |
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| 617 | ||
| 618 | ||
| 619 | class MatchPBBISID(MatchField): |
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| 620 | """Match for PBB ISID.""" |
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| 621 | ||
| 622 | name = 'pbb_isid' |
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| 623 | oxm_field = OxmOfbMatchField.OFPXMT_OFB_PBB_ISID |
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| 624 | ||
| 625 | def as_of_tlv(self): |
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| 626 | """Return a pyof OXM TLV instance.""" |
|
| 627 | try: |
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| 628 | value = int(self.value) |
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| 629 | mask = None |
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| 630 | oxm_hasmask = False |
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| 631 | except ValueError: |
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| 632 | value, mask = map(int, self.value.split('/')) |
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| 633 | oxm_hasmask = True |
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| 634 | value_bytes = value.to_bytes(3, 'big') |
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| 635 | if mask: |
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| 636 | value_bytes += mask.to_bytes(3, 'big') |
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| 637 | return OxmTLV(oxm_field=self.oxm_field, |
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| 638 | oxm_hasmask=oxm_hasmask, |
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| 639 | oxm_value=value_bytes) |
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| 640 | ||
| 641 | @classmethod |
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| 642 | def from_of_tlv(cls, tlv): |
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| 643 | """Return an instance from a pyof OXM TLV.""" |
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| 644 | value = int.from_bytes(tlv.oxm_value[:3], 'big') |
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| 645 | if tlv.oxm_hasmask: |
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| 646 | pbb_isid_mask = int.from_bytes(tlv.oxm_value[3:], 'big') |
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| 647 | value = f'{value}/{pbb_isid_mask}' |
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| 648 | return cls(value) |
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| 649 | ||
| 650 | ||
| 651 | class MatchEXTHDR(MatchField): |
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| @@ 497-526 (lines=30) @@ | ||
| 494 | return cls(opcode) |
|
| 495 | ||
| 496 | ||
| 497 | class MatchIVP6FLabel(MatchField): |
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| 498 | """Match for IPV6 Flow Label.""" |
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| 499 | ||
| 500 | name = 'ipv6_flabel' |
|
| 501 | oxm_field = OxmOfbMatchField.OFPXMT_OFB_IPV6_FLABEL |
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| 502 | ||
| 503 | def as_of_tlv(self): |
|
| 504 | """Return a pyof OXM TLV instance.""" |
|
| 505 | try: |
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| 506 | value = int(self.value) |
|
| 507 | mask = None |
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| 508 | oxm_hasmask = False |
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| 509 | except ValueError: |
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| 510 | value, mask = map(int, self.value.split('/')) |
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| 511 | oxm_hasmask = True |
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| 512 | value_bytes = value.to_bytes(4, 'big') |
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| 513 | if mask: |
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| 514 | value_bytes += mask.to_bytes(4, 'big') |
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| 515 | return OxmTLV(oxm_field=self.oxm_field, |
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| 516 | oxm_hasmask=oxm_hasmask, |
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| 517 | oxm_value=value_bytes) |
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| 518 | ||
| 519 | @classmethod |
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| 520 | def from_of_tlv(cls, tlv): |
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| 521 | """Return an instance from a pyof OXM TLV.""" |
|
| 522 | value = int.from_bytes(tlv.oxm_value[:4], 'big') |
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| 523 | if tlv.oxm_hasmask: |
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| 524 | flabel_mask = int.from_bytes(tlv.oxm_value[4:], 'big') |
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| 525 | value = f'{value}/{flabel_mask}' |
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| 526 | return cls(value) |
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| 527 | ||
| 528 | ||
| 529 | class MatchICMPV6Type(MatchField): |
|
