xref: /freebsd/share/man/man4/altq.4 (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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26.\" $FreeBSD$
27.\"
28.Dd June 12, 2007
29.Dt ALTQ 4
30.Os
31.Sh NAME
32.Nm ALTQ
33.Nd "alternate queuing of network packets"
34.Sh SYNOPSIS
35.Cd options ALTQ
36.Pp
37.Cd options ALTQ_CBQ
38.Cd options ALTQ_RED
39.Cd options ALTQ_RIO
40.Cd options ALTQ_HFSC
41.Cd options ALTQ_CDNR
42.Cd options ALTQ_PRIQ
43.Sh DESCRIPTION
44The
45.Nm
46framework provides several disciplines for queuing outgoing network packets.
47This is done by modifications to the interface packet queues.
48See
49.Xr altq 9
50for details.
51.Pp
52The user interface for
53.Nm
54is implemented by the
55.Xr pfctl 8
56utility, so please refer to the
57.Xr pfctl 8
58and the
59.Xr pf.conf 5
60manpages for a complete description of the
61.Nm
62capabilities and how to use it.
63.Ss Kernel Options
64The following options in the kernel configuration file are related to
65.Nm
66operation:
67.Pp
68.Bl -tag -width ".Dv ALTQ_DEBUG" -compact
69.It Dv ALTQ
70Enable
71.Nm .
72.It Dv ALTQ_CBQ
73Build the
74.Dq "Class Based Queuing"
75discipline.
76.It Dv ALTQ_RED
77Build the
78.Dq "Random Early Detection"
79extension.
80.It Dv ALTQ_RIO
81Build
82.Dq "Random Early Drop"
83for input and output.
84.It Dv ALTQ_HFSC
85Build the
86.Dq "Hierarchical Packet Scheduler"
87discipline.
88.It Dv ALTQ_CDNR
89Build the traffic conditioner.
90This option is meaningless at the moment as the conditioner is not used by
91any of the available disciplines or consumers.
92.It Dv ALTQ_PRIQ
93Build the
94.Dq "Priority Queuing"
95discipline.
96.It Dv ALTQ_NOPCC
97Required if the TSC is unusable.
98.It Dv ALTQ_DEBUG
99Enable additional debugging facilities.
100.El
101.Pp
102Note that
103.Nm Ns -disciplines
104cannot be loaded as kernel modules.
105In order to use a certain discipline you have to build it into a custom
106kernel.
107The
108.Xr pf 4
109interface, that is required for the configuration process of
110.Nm
111can be loaded as a module.
112.Sh SUPPORTED DEVICES
113The driver modifications described in
114.Xr altq 9
115are required to use a certain network card with
116.Nm .
117They have been applied to the following hardware drivers:
118.Xr an 4 ,
119.Xr ath 4 ,
120.Xr aue 4 ,
121.Xr awi 4 ,
122.Xt axe 4 ,
123.Xr bce 4 ,
124.Xr bfe 4 ,
125.Xr bge 4 ,
126.Xr dc 4 ,
127.Xr de 4 ,
128.Xr ed 4 ,
129.Xr em 4 ,
130.Xr ep 4 ,
131.Xr fxp 4 ,
132.Xr gem 4 ,
133.Xr hme 4 ,
134.Xr ipw 4 ,
135.Xr iwi 4 ,
136.Xr le 4 ,
137.Xr msk 4 ,
138.Xr mxge 4 ,
139.Xr my 4 ,
140.Xr nfe 4 ,
141.Xr npe 4 ,
142.Xr nve 4 ,
143.Xr ral 4 ,
144.Xr re 4 ,
145.Xr rl 4 ,
146.Xr rum 4 ,
147.Xr sf 4 ,
148.Xr sis 4 ,
149.Xr sk 4 ,
150.Xr ste 4 ,
151.Xr stge 4 ,
152.Xr udav 4 ,
153.Xr ural 4 ,
154.Xr vge 4 ,
155.Xr vr 4 ,
156.Xr wi 4 ,
157and
158.Xr xl 4 .
159.Pp
160The
161.Xr ndis 4
162framework also has support for
163.Nm
164and thus all encapsulated drivers.
165.Pp
166The
167.Xr tun 4
168and
169.Xr ng_iface 4
170pseudo drivers also do support
171.Nm .
172.Sh SEE ALSO
173.Xr pf 4 ,
174.Xr pf.conf 5 ,
175.Xr ipfw 8 ,
176.Xr pfctl 8 ,
177.Xr altq 9
178