IPFW How to match COS with ipfw

[nazari]

Hi,

Can we add Rules in IPFW that match with packets with COS tag (in layer 2)?

Thank you for your suggestion.

 

[phoenix]

Not according to the man page, no. The only layer 2 information that can be checked/matched is the source and destination MAC addresses.

 

[nazari]

in sys/netpfil/ipfw/ip_fw2.c and checking `m->m_pkthdr.PH_vt` of packet, can matching with COS tag.