Manual browser: shmif_dumpbus(1)
|SHMIF_DUMPBUS(1)||General Commands Manual||SHMIF_DUMPBUS(1)|
NAMEshmif_dumpbus — examine shmif bus contents
|shmif_dumpbus||[-h] [-p pcapfile] busfile|
DESCRIPTIONThe shmif_dumpbus utility examines the bus of an shmif(4) Ethernet interface. The most useful feature is converting the bus to the pcap(3) file format for later examination. shmif_dumpbus itself is limited to displaying only very basic information about each frame.
shmif_dumpbus accepts the following flags:
- Print bus header only and skip contents.
- -p pcapfile
- Convert bus contents to the pcap(3) format and write the result to pcapfile. The file - signifies stdout.
EXAMPLESFeed the busfile contents to pcap:
$ shmif_dumpbus -p - busfile | tcpdump -r -
CAVEATSshmif_dumpbus does not lock the busfile and is best used for post-mortem analysis of the bus traffic.
The timestamp for each frame contains the sender's timestamp and may not be monotonically increasing with respect to the frame order in the dump.
|January 12, 2011||NetBSD 7.0|