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https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1071128/dra821u-how-to-add-vlan-tag-with-cpsw2g
你(们)好
我们关注 cpsw2g 以太网，以添加 VLAN
3.2.3.7. CPSW2g 以太网—用于 J7200的处理器 SDK Linux 文档
root@j7200-evm:~# ip link add link eth0 name eth0.5 type vlan id 5 [ 7256.997582] 8021q: 802.1Q VLAN Support v1.8 [ 7257.001812] 8021q: adding VLAN 0 to HW filter on device eth0 [ 7257.009214] am65-cpsw-nuss 46000000.ethernet: Adding vlan 5 to vlan filter [ 7257.016208] am65-cpsw-nuss 46000000.ethernet: get: wrong ale fld id 2 [ 7257.022760] am65-cpsw-nuss 46000000.ethernet: get: wrong ale fld id 1 root@j7200-evm:~# ip addr add 192.168.0.21/24 dev eth0.5 root@j7200-evm:~# [ 7294.916006] systemd-journald[163]: Failed to send WATCHDOG=1 notification message: Transport endpoint is not connected ifconfig docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 metric 1 inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255 ether 02:42:be:76:f1:a0 txqueuelen 0 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 metric 1 inet 192.168.0.20 netmask 255.255.255.0 broadcast 192.168.0.255 inet6 fe80::f684:4cff:fef9:73e3 prefixlen 64 scopeid 0x20<link> ether f4:84:4c:f9:73:e3 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 191 bytes 50097 (48.9 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eth0.5: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 metric 1 inet 192.168.0.21 netmask 255.255.255.0 broadcast 0.0.0.0 inet6 fe80::f684:4cff:fef9:73e3 prefixlen 64 scopeid 0x20<link> ether f4:84:4c:f9:73:e3 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 37 bytes 6294 (6.1 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
VLAN 数据包发送/接收
要发送或接收带有 VLAN 标记的数据包，请将该套接字绑定到上面显示的正确以太网接口，并可通过该套接字 FD 发送/接收。
如何通过 CPSW2G 发送带有 VLAN 标签的数据流
巴西
Jay
Jay，
我看到您已经添加了 VLAN ID 5并为 eth0.5分配了 IP 地址。 因此，您可以直接使用 eth0.1发送数据包，而 VLAN ID 将由 CPSW 添加到数据包中。 一个简单的例子就是
ping -i eth0.5 <目标 IP>
注意：目的 IP 还需要支持 VLAN。
希望这些注释有所帮助。
华普
