void __4_4_18_2__Matching_Rule_Description() { /** * @group: 4.4.18.2 Matching Rule Description * * @description: The Matching Rule consists of several parameters. The first two parameters, MD[1:0] and ENB[1:0], determine the orga- * nization of the remainder of each Matching Rule. * When MD = 00, the Matching Rule is disabled. * TABLE 4-18: ACL MATCHING RULE PARAMETERS FOR MD = 01 * * | Parameter | Description | * +---------------------+-----------------------------------------------------------------+ * | MD[1:0] MODE | | * | | 00 = Matching rule is disabled | * | | 01 = Layer 2 MAC header or counter filtering | * | | 10 = Layer 3 IP header filtering | * | | 11 = Layer 4 TCP header (and IP protocol) filtering | * +---------------------+-----------------------------------------------------------------+ * | ENB[1:0] | | * | | 00 = Count Mode. Both the MAC Address and TYPE are tested. A | * | | count value (either time or packet count) is also incorporated. | * | | Details are given below this table. | * | | 01 = Comparison is performed only on the TYPE value | * | | 10 = Comparison is performed only on the MAC Address value | * | | 11 = Both the MAC Address and TYPE are tested | * +---------------------+-----------------------------------------------------------------+ * | S/D Source / | | * | Destination | 0 = Destination address | * | | 1 = Source address | * +---------------------+-----------------------------------------------------------------+ * | EQ Equal / Not Equal| | * | | 0 = Not Equal produces true result | * | | 1 = Equal produces true result | * +---------------------+-----------------------------------------------------------------+ * | MAC ADDRESS[47:0] | 48-bit MAC address | * +---------------------+-----------------------------------------------------------------+ * | TYPE[15:0] | EtherType | * +---------------------+-----------------------------------------------------------------+ * * Details for MD = 01, ENB = 00: * The 11 bits of the aggregated bit fields from PM, P, RPE, RP and MM in the Action rule entry specify a count value for * packets matching MAC Address and TYPE in the Matching Field. * The count unit is determined by the TU bit (located in the Action rule). * • When 0, the unit is microsecond. * • When 1, the unit is millisecond. * The CA bit (located in the Action rule) determines the algorithm used to generate an interrupt when the count terminates. * • When 0, an 11-bit counter will be loaded with the count value from the list and start counting down every unit time. * An interrupt will be generated when the timer expires, i.e. the next qualified packet has not been received within * the period specified by the value. * • When 1, the counter is incremented with every matched packet received. An interrupt is generated when the ter- * minal count is reached. The count resets thereafter. Time units are not used in this mode. * * * TABLE 4-19: ACL MATCHING RULE PARAMETERS FOR MD = 10 * * | Parameter | Description | * +---------------------+-----------------------------------------------------------------+ * | MD[1:0] MODE | | * | | 00 = Matching rule is disabled | * | | 01 = Layer 2 MAC header or counter filtering | * | | 10 = Layer 3 IP header filtering | * | | 11 = Layer 4 TCP header (and IP protocol) filtering | * +---------------------+-----------------------------------------------------------------+ * | ENB[1:0] | | * | | 00 = Reserved | * | | 01 = IPv4 source or destination address (with mask) | * | | 10 = IPv4 source and destination address (without mask) | * | | 11 = Reserved | * +---------------------+-----------------------------------------------------------------+ * | S/D Source / | | * | Destination | 0 = Destination address | * | | 1 = Source address | * +---------------------+-----------------------------------------------------------------+ * | EQ Equal / Not Equal| | * | | 0 = Not Equal produces true result | * | | 1 = Equal produces true result | * +---------------------+-----------------------------------------------------------------+ * | IP ADDRESS[31:0] | IPv4 address | * | | Source or destination address (determined by S/D) when ENB = 01,| * | | Source address when ENB = 10 | * +---------------------+-----------------------------------------------------------------+ * | IP MASK[31:0] | Mask bits for the IPv4 address when ENB = 01: | * | | 0 = This bit of the address is compared | * | | 1 = This bit of the address is not compared | * | | Destination IPv4 address when ENB = 10 | * +---------------------+-----------------------------------------------------------------+ * * * TABLE 4-20: ACL MATCHING RULE PARAMETERS FOR MD = 11 * * | Parameter | Description | * +---------------------+-----------------------------------------------------------------+ * | MD[1:0] MODE | | * | | 00 = Matching rule is disabled | * | | 01 = Layer 2 MAC header or counter filtering | * | | 10 = Layer 3 IP header filtering | * | | 11 = Layer 4 TCP header (and IP protocol) filtering | * +---------------------+-----------------------------------------------------------------+ * | ENB[1:0] | | * | | 00 = IP Protocol comparison is enabled | * | | 01 = TCP source/destination port comparison is enabled | * | | 10 = UDP source/destination port comparison is enabled | * | | 11 = TCP sequence number is compared | * +---------------------+-----------------------------------------------------------------+ * | S/D Source / | | * | Destination | 0 = Destination address | * | | 1 = Source address | * +---------------------+-----------------------------------------------------------------+ * | EQ Equal / Not Equal| | * | | 0 = Not Equal produces true result | * | | 1 = Equal produces true result | * +---------------------+-----------------------------------------------------------------+ * | MAX PORT[15:0] | Max and Min Ports for TCP/UDP | * | MIN PORT[15:0] | or | * | | TCP Sequence Number[31:0] | * +---------------------+-----------------------------------------------------------------+ * | PC[1:0] Port | | * | Comparison | 00 = Port comparison is disabled | * | | 01 = Port matches either one of MAX or MIN | * | | 10 = Match if port number is in the range of MIN to MAX | * | | 11 = Match if port number is out of the range | * +---------------------+-----------------------------------------------------------------+ * | PRO[7:0] | IPv4 protocol to be matched | * +---------------------+-----------------------------------------------------------------+ * | FME TCP Flag Match | | * | Enable | 0 = TCP FLAG matching disabled | * | | 1 = TCP FLAG matching enabled | * +---------------------+-----------------------------------------------------------------+ * | FMASK[7:0] | TCP FLAG Mask | * | | 0 = This bit of the Flag field is compared | * | | 1 = This bit of the Flag field is not compared | * +---------------------+-----------------------------------------------------------------+ * | FLAG[7:0] | TCP Flag to be matched | * +---------------------+-----------------------------------------------------------------+ * */ }