SHMIF_DUMPBUS(1) BSD General Commands Manual SHMIF_DUMPBUS(1)NAMEshmif_dumpbus — examine shmif bus contents
SYNOPSISshmif_dumpbus [-h] [-p pcapfile] busfile
DESCRIPTION
The shmif_dumpbus utility examines the bus of an shmif(4) Ethernet inter‐
face. The most useful feature is converting the bus to the pcap(3) file
format for later examination. shmif_dumpbus itself is limited to dis‐
playing only very basic information about each frame.
shmif_dumpbus accepts the following flags:
-h 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.
EXAMPLES
Feed the busfile contents to pcap:
$ shmif_dumpbus-p - busfile | tcpdump -r -
SEE ALSOpcap(3), shmif(4), tcpdump(8)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.
BSD January 12, 2011 BSD