About Linux Socket Filter

Hi: I am writing a socket filter program and using "tcpdump -dd vlan and arp" to filter out the arp packet whose protocol field is 8100(vlan). Everything is fine if I call recvfrom to receive the packet. However, if I open two packet socket in parallel (and use the select to demultiplex among the

Scheduling in interrupt and call trace

Hi all: I am tracking a driver bug in arm linux when I got a scheduling in interrupt context panic. I traced into kernel schedule() function, and found that "schedulingin interrupt" is a check point when the process scheduler is invoked, and the callstack reveals that the scheduler is invoked du