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dch/dtrace.md

Created June 8, 2017 15:34
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dtrace.md 
# show the first argument passed to ether_input function 
dtrace -n 'fbt::ether_input:entry { print(*(args[0])); }'
# dump first 32 bytes of the dereferenced pointer to the actual data arriving on the wire
dtrace -n 'fbt:kernel:ether_input:entry { tracemem(args[1]->m_data, 32); }'
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