Representation of match conditions in logical pipeline data
First Claim
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1. A method for generating flow entries for a managed forwarding element (MFE), the method comprising:
- receiving a plurality of flow descriptions for processing packets by logical forwarding elements, each flow description comprising a set of match conditions and corresponding set of actions, wherein each set of match conditions in the flow descriptions is represented as a combination of Boolean operators and relational operators in a flow description language, wherein a particular set of match conditions in a particular flow description uses one or more relational operators, including at least one of a greater-than operator and a less-than operator, to define a range of allowable values for a particular packet field;
generating, for each flow description, one or more flow entries in a format useable by the MFE, wherein a particular flow entry generated from the particular flow description based on the particular set of match conditions uses a bitmask of the particular packet field to match over at least a portion of the range of allowable values for the packet field defined by the at least one relational operator; and
distributing the generated flow entries to the MFE to use to implement network operations described by the plurality of flow descriptions.
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Abstract
Some embodiments provide a method that receives several flow descriptions. Each flow description includes a set of match conditions and corresponding set of actions. Each set of match conditions is represented as a combination of Boolean and relational operators in a flow description language. The method generates one or more flow entries for each flow description. The flow entries are generated in a format useable by a managed forwarding element (MFE). The method distributes the generated flow entries to the MFE in order for the MFE to implement network operations described by the plurality of flow descriptions.
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20 Claims
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1. A method for generating flow entries for a managed forwarding element (MFE), the method comprising:
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receiving a plurality of flow descriptions for processing packets by logical forwarding elements, each flow description comprising a set of match conditions and corresponding set of actions, wherein each set of match conditions in the flow descriptions is represented as a combination of Boolean operators and relational operators in a flow description language, wherein a particular set of match conditions in a particular flow description uses one or more relational operators, including at least one of a greater-than operator and a less-than operator, to define a range of allowable values for a particular packet field; generating, for each flow description, one or more flow entries in a format useable by the MFE, wherein a particular flow entry generated from the particular flow description based on the particular set of match conditions uses a bitmask of the particular packet field to match over at least a portion of the range of allowable values for the packet field defined by the at least one relational operator; and distributing the generated flow entries to the MFE to use to implement network operations described by the plurality of flow descriptions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 19, 20)
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11. A non-transitory machine readable medium storing a program for execution by at least one processing unit, the program comprising sets of instructions for:
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receiving a plurality of flow descriptions, each flow description comprising a set of match conditions and corresponding set of actions, wherein each set of match conditions is represented as a combination of Boolean operators and relational operators in a flow description language, wherein a particular set of match conditions uses one or more relational operators, including at least one of a greater-than operator and a less-than operator to define a range of allowable values for a particular field; generating, for each flow description, one or more flow entries in a format useable by managed forwarding element (MFE), wherein a flow entry generated based on the particular set of match conditions uses a bitmask of the particular field to match over at least a portion of the range of allowable values defined by the at least one relational operator; and distributing the generated flow entries to the MFE to use to implement network operations described by the plurality of flow descriptions. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification