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The networking blackbox provides a mechanism for the kernel to record
socket buffers at various locations in the network stack, and to
dump them later to user space.
Socket buffers are stored with all meta-information (i.e. the content of struct sk_buff) and the actual data. They are recorded in a ring buffer of configurable size. Dumps are either initiated from the kernel (e.g. when detecting an abnormal condition, or from user space. After a dump has been triggered, the data stored in the ring buffer can be read from a device file. Networking blackbox also includes a tool that pretty-prints the contents of the various structures included in a dump. The networking blackbox is being developed as part of the FAST project at Caltech. |
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The current version is
netbb-14
(28 kB), released 10-MAY-2003.
Changes since the previous version:
Older versions can be found here. |
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Usage information: Full documentation is included in the netbb package. The kernel part is described in the file netbb/README. The pretty-printer and its script language are described in the file netbb/dumpbb/README. |
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| Under construction :-) |
| Last update: 10-MAY-2003 Werner Almesberger |