Xilinx 7 Series万兆网IP使用
方法
万兆网IP，axi-dma，axi-pcie-bridge，搭建一个基于FPGA的万兆网卡，移植petalinux-2015.2.1的驱动到Ubuntu16.04.6上，测试结果如下，
qe@qe-pc:~/project$ ./iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.10.6, port 6668
[ 5] local 192.168.10.8 port 5201 connected to 192.168.10.6 port 6669
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 231 MBytes 1.93 Gbits/sec
[ 5] 1.00-2.00 sec 235 MBytes 1.97 Gbits/sec
[ 5] 2.00-3.00 sec 233 MBytes 1.96 Gbits/sec
[ 5] 3.00-4.00 sec 236 MBytes 1.98 Gbits/sec
[ 5] 4.00-5.00 sec 232 MBytes 1.94 Gbits/sec
[ 5] 5.00-6.00 sec 232 MBytes 1.95 Gbits/sec
[ 5] 6.00-7.00 sec 232 MBytes 1.95 Gbits/sec
[ 5] 7.00-8.00 sec 232 MBytes 1.95 Gbits/sec
[ 5] 8.00-9.00 sec 240 MBytes 2.01 Gbits/sec
[ 5] 9.00-10.00 sec 239 MBytes 2.00 Gbits/sec
[ 5] 10.00-10.04 sec 8.53 MBytes 2.01 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.04 sec 2.30 GBytes 1.96 Gbits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
iperf3: interrupt - the server has terminated
qe@qe-pc:~/project$ ./iperf3 -c 192.168.10.6 -w 4M
Connecting to host 192.168.10.6, port 5201
[ 4] local 192.168.10.8 port 37564 connected to 192.168.10.6 port 5201
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 4] 0.00-1.00 sec 37.3 MBytes 313 Mbits/sec 0 28.5 KBytes
[ 4] 1.00-2.00 sec 36.9 MBytes 310 Mbits/sec 0 28.5 KBytes
[ 4] 2.00-3.00 sec 36.9 MBytes 310 Mbits/sec 0 28.5 KBytes
[ 4] 3.00-4.00 sec 36.9 MBytes 309 Mbits/sec 0 28.5 KBytes
[ 4] 4.00-5.00 sec 36.9 MBytes 310 Mbits/sec 0 28.5 KBytes
[ 4] 5.00-6.00 sec 36.9 MBytes 310 Mbits/sec 0 28.5 KBytes
[ 4] 6.00-7.00 sec 36.9 MBytes 310 Mbits/sec 0 28.5 KBytes
[ 4] 7.00-8.00 sec 36.9 MBytes 310 Mbits/sec 0 28.5 KBytes
[ 4] 8.00-9.00 sec 36.9 MBytes 309 Mbits/sec 0 28.5 KBytes
[ 4] 9.00-10.00 sec 36.9 MBytes 310 Mbits/sec 0 28.5 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.00 sec 370 MBytes 310 Mbits/sec 0 sender
[ 4] 0.00-10.00 sec 369 MBytes 310 Mbits/sec receiver
iperf Done.
参考我的博文，发送速度还不如一个zynq（80MB/s左右），原因是驱动没有优化，每发送一个包都需要中断响应一次，中断还要透过pcie msi传输，所以效率低，接收采用了napi，所以性能相比zynq有所提高，但是还是不太理想，需要进一步采用FPGA硬件加速。