Xilinx Alveo X3522, User Manual

Page: 19 / 64

Features
Some features not normally used in low latency deployments because of their adverse impact
have been removed. The following table gives a comparison of features on the X3522 and the
X2522 (its predecessor):
Table 3: Comparison of features on the X3522 and the X2522
Feature X2522 X3522
Size Low-profile, half length Low-profile, half length
Interfaces 2 SFP+ cages (2×10/25G) 2 DSFP+ cages (2×2×10G)
PCIe vendor ID 1924 (Solarflare) 10ee (Xilinx)
OS support Linux, Windows, VMWare Linux
Net driver name
sfc xilinx_efct
Onload support Yes Yes
TCPDirect support Yes Yes
ef_vi support Yes Yes
Sfptpd support Yes Yes
Oscillator Discrete Stratum 3 Discrete Stratum 3
Hardware timestamps Yes Yes
Jumbo frame support Yes No
RX queues Multiple separate queues Shared queue
TX types DMA, PIO, CTPIO CTPIO only
Number of filters 16384 total 256 per port
Types of filter 3 or 5 part IP, MAC address, all-unicast,
all-multicast, all-discards
3-part IP, all multicast
Dropped on NIC Unsubscribed/unwanted Explicit only
Duplicate multicast filters Yes No
PF-VLAN Yes No
Multi-PF mode Yes No
SR-IOV support Yes No
Hardware TX checksum offload Yes No
You can upgrade the X3522 by enabling hybrid mode. You can then add your own application
code to the datapath in the FPGA, meaning it can be easily customized to add new features.
Tuning
Changes in the design and behavior of the X3522 mean that it might require different system
tuning settings from its predecessors.
Chapter 3: What's New
UG1523 (v1.0) October 18, 2022 www.xilinx.com
Alveo X3522 User Guide 19
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