NAME

ipgpc - IP Generic Packet Classifier

DESCRIPTION

The IP Generic Packet Classifier (ipgpc) module provides packet classification at the Solaris IP layer. ipgpc is an implementation of the Multi-Field (MF) classifier as described in RFC2475: An Architecture for Differentiated Services.

The classifier is configured, at startup or dynamically, using a set of "filters." Filters describe selectors that are matched against input packets that are processed by the classifier. Some selectors feature exact matching data points, while others utilize non-exact or wildcard data points.

Each filter is associated with a class describing the next actions to process a packet. There is a many-to-one (M-to-1) mapping relationship between filters and a class. Additionally, each class is aware of which filters are associated with it. A class is configured with a class name and a next action.

Unlike traditional classifiers used in edge routers, ipgpc is designed for a host or server device. A host-based classifier provides access to more resources and data than edge routers. User, project, and interface information are available at the host.

STATISTICS

The ipgpc module exports global and per-class statistics (available through kstat:)

Global statistics:

module: ipgpc                           instance:<action id>
name:   ipgpc global stats              class: <action name>


        crtime


        snaptime


        nbytes                          <number of classified bytes>


        nclasses                        <number of classes>


        nfilters                        <number of filters>


        npackets                        <number of classified packets>


        epackets                        <number of packets in error>

Per-class statistics:

module: ipgpc                           instance:<action id>
name:   <class name>                    class: <action name>


        crtime


        snaptime


        last match                      <time of last match>


        nbytes                          <number of classified bytes>


        npackets                        <number of classified packets>

FILES

/kernel/ipp/sparcv9/ipgpc

SEE ALSO

dlcosmk(4IPP), dscpmk(4IPP), flowacct(4IPP), ipqos(4IPP), tokenmt(4IPP), tswtclmt(4IPP), ipqosconf(8)

RFC 2475, An Architecture for Differentiated Services S. Blake, D. Black, M. Carlson, E. Davies, Z. Wang, W. Weiss — The Internet Society, 1998