diff options
Diffstat (limited to 'external_libs/python/dpkt-1.8.6.2/dpkt/aoe.py')
-rw-r--r-- | external_libs/python/dpkt-1.8.6.2/dpkt/aoe.py | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/external_libs/python/dpkt-1.8.6.2/dpkt/aoe.py b/external_libs/python/dpkt-1.8.6.2/dpkt/aoe.py new file mode 100644 index 00000000..8fcf7c63 --- /dev/null +++ b/external_libs/python/dpkt-1.8.6.2/dpkt/aoe.py @@ -0,0 +1,90 @@ +# -*- coding: utf-8 -*- +"""ATA over Ethernet Protocol.""" + +import struct +import dpkt +from decorators import deprecated + + +class AOE(dpkt.Packet): + __hdr__ = ( + ('ver_fl', 'B', 0x10), + ('err', 'B', 0), + ('maj', 'H', 0), + ('min', 'B', 0), + ('cmd', 'B', 0), + ('tag', 'I', 0), + ) + _cmdsw = {} + + @property + def ver(self): return self.ver_fl >> 4 + + @ver.setter + def ver(self, ver): self.ver_fl = (ver << 4) | (self.ver_fl & 0xf) + + @property + def fl(self): return self.ver_fl & 0xf + + @fl.setter + def fl(self, fl): self.ver_fl = (self.ver_fl & 0xf0) | fl + + @classmethod + def set_cmd(cls, cmd, pktclass): + cls._cmdsw[cmd] = pktclass + + @classmethod + def get_cmd(cls, cmd): + return cls._cmdsw[cmd] + + def unpack(self, buf): + dpkt.Packet.unpack(self, buf) + try: + self.data = self._cmdsw[self.cmd](self.data) + setattr(self, self.data.__class__.__name__.lower(), self.data) + except (KeyError, struct.error, dpkt.UnpackError): + pass + + def pack_hdr(self): + try: + return dpkt.Packet.pack_hdr(self) + except struct.error, e: + raise dpkt.PackError(str(e)) + + # Deprecated methods, will be removed in the future + # ================================================= + @deprecated + def _get_ver(self): return self.ver + + @deprecated + def _set_ver(self, ver): self.ver = ver + + @deprecated + def _get_fl(self): return self.fl + + @deprecated + def _set_fl(self, fl): self.fl = fl + # ================================================= + + + +AOE_CMD_ATA = 0 +AOE_CMD_CFG = 1 +AOE_FLAG_RSP = 1 << 3 + + +def __load_cmds(): + prefix = 'AOE_CMD_' + g = globals() + for k, v in g.iteritems(): + if k.startswith(prefix): + name = 'aoe' + k[len(prefix):].lower() + try: + mod = __import__(name, g) + except ImportError: + continue + AOE.set_cmd(v, getattr(mod, name.upper())) + + +if not AOE._cmdsw: + __load_cmds() |