setsockopt设置SO_ATTACH_FILTER时的问题

rootclown

2. setsockopt(s,SOL_SOCKET,SO_ATTACH_FILTER,&total_fcode,sizeof(total_fcode))

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显示 Invalid argument
我看man 7 socket说

2.     The  CONFIG_FILTER socket options SO_ATTACH_FILTER and SO_DETACH_FILTER are not documented. The suggested interface to  use  them  is  via  the libpcap library.

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不能在程序里直接用上边的函数么?
我不会用pcap

rootclown

自己顶一下