Information

Enhanced Three-Speed Ethernet Controllers
MPC8308 PowerQUICC II Pro Processor Reference Manual, Rev. 1
Freescale Semiconductor 16-3
— IP v4 and IP v6 header recognition on receive
— IP v4 header checksum verification and generation
— TCP and UDP checksum verification and generation
— Per-packet configurable off-load
— Recognition of VLAN, stacked-VLAN, 802.2, PPPoE session, MPLS stacks, ARP, and
ESP/AH IP-Security headers
• Quality of service (QoS) support
— Transmission from up to eight queues
– Priority-based queue selection
– Modified weighted round-robin queue selection with fair bandwidth allocation
— Reception to up to eight physical queues
– 64 virtual receive queues overlaid on 8 physical buffer descriptor rings
– Table-oriented queue filing strategy based on 16 header fields or flags
– Frame rejection support for filtering applications
– Filing based on Ethernet, IP, and TCP/UDP properties, including VLAN fields, Ether-type,
IP protocol type, IP TOS or differentiated services, IP source and destination addresses,
TCP/UDP port numbers
• Interrupt coalescing
— Packet-count-based thresholds for both receive and transmit
— Timer-based thresholds
• Full- and half-duplex Ethernet support (1000 Mbps supports only full duplex):
— IEEE 802.3 full-duplex flow control (automatic PAUSE frame generation or software
programmed PAUSE frame generation and recognition)
— Programmable maximum frame length supports jumbo frames (up to 9.6 Kbytes) and
IEEE 802.1 virtual local area network (VLAN) tags and priority
— VLAN insertion and deletion
– Per-frame VLAN control word or default VLAN for each eTSEC
– Extracted VLAN control word passed to software separately
– Programmable VLAN tag to support metropolitan bridging
— Retransmission following a collision
— Support for CRC generation and verification of inbound/outbound packets
— Programmable Ethernet preamble insertion and extraction of up to 7 bytes
• MAC address recognition:
— Exact match on primary and virtual 48-bit unicast addresses
– VRRP and HSRP support for seamless router fail-over
– In addition to primary station address, up to fifteen additional exact-match MAC addresses
supported
— Broadcast address (accept/reject)