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Improvements from jmc@openbsd.

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wiz 2006-02-25 01:04:26 +00:00
parent 1ad8067cb3
commit c1ab60f52a
1 changed files with 22 additions and 23 deletions
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45
share/man/man9/rssadapt.9
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@ -1,4 +1,4 @@
.\" $NetBSD: rssadapt.9,v 1.4 2004/12/08 18:35:56 peter Exp $
.\" $NetBSD: rssadapt.9,v 1.5 2006/02/25 01:04:26 wiz Exp $
.\"
.\" Copyright (c) 2004 David Young. All rights reserved.
.\"
@ -96,19 +96,19 @@ PER for all packets of a certain length.
Choose the transmission data rate for a packet.
.Bl -tag -width "do_not_adapt" -compact
.It Fa ra
ordinarily, the
Ordinarily, the
.Nm
state object belonging to the node who is the packet destination.
state object belonging to the node which is the packet destination.
However, if the destination is a broadcast/multicast address, then
.Fa ra
belongs to the BSS node,
.Va ic-\*[Gt]ic_bss .
.It Fa rs
a list of eligible data rates for the node; for example, the
A list of eligible data rates for the node; for example, the
rates negotiated when the node associated with the network.
.It Fa len
the packet length in bytes, including the 802.11 header and
frame check sequence.
The packet length in bytes, including the 802.11 header and
frame check sequence
.Pq FCS .
.It Fa fixed_rate
If the operator has set the data rate using, for example,
@ -122,7 +122,6 @@ obeys a fixed data rate whenever the 802.11 standard allows it:
sometimes the standard requires multicast/broadcast packets to be
transmitted at a so-called
.Dq basic rate .
.Fn ieee80211_rssadapt_choose
.It Fa dvname
The device driver uses
.Fa dvname
@ -151,18 +150,18 @@ indicating its choice of transmit data rate.
The RSS serves as a rough estimate of the S/N at each node.
A driver provides RSS updates using
.Fn ieee80211_rssadapt_input ,
whose arguments are
whose arguments are:
.Bl -tag -width "rssi" -compact
.It Fa ic
the wireless interface's 802.11 state object;
The wireless interface's 802.11 state object.
.It Fa ni
the 802.11 node whose RSS the driver is updating;
The 802.11 node whose RSS the driver is updating.
.It Fa ra
the node's
The node's
.Nm
state object; and
state object.
.It Fa rssi
the node's received signal strength indication.
The node's received signal strength indication.
The range of
.Fa rssi
is from 0 to 255.
@ -176,15 +175,15 @@ and
to indicate transmit successes and failures, respectively.
.Bl -tag -width "ni" -compact
.It Fa ic
is the 802.11 state object,
The 802.11 state object.
.It Fa ni
is the neighbor to whom the driver transmitted,
The neighbor to whom the driver transmitted.
.It Fa ra
is the neighbor's
The neighbor's
.Nm
state object, and
state object.
.It Fa id
tells statistics on the transmission attempt.
DIsplays statistics on the transmission attempt.
.El
.It Fn ieee80211_rssadapt_updatestats "ra"
An 802.11 node is eligible for its RSS thresholds to decay every
@ -200,7 +199,7 @@ every 1/10th second for each node's
object.
.Bl -tag -width "ra" -compact
.It Fa ra
the neighbor's
The neighbor's
.Nm
state object.
.El
@ -281,13 +280,13 @@ struct ieee80211_rssdesc {
.Ed
.Pp
.Fa id_len
tells the length, in bytes, of the transmitted packet.
is the length, in bytes, of the transmitted packet.
.Fa id_node
points at the neighbor's
points to the neighbor's
.Vt ieee8021_node ,
and
.Fa id_rssi
tells the exponential-average RSS at the time the packet was
is the exponential-average RSS at the time the packet was
transmitted.
.Fa id_rateidx
is an index into the destination-neighbor's rate-set,
@ -344,7 +343,7 @@ and
are used to control the rate that RSS thresholds
.Dq decay .
.Fa ra_last_raise
tells when
indicates when
.Fn ieee80211_rssadapt_raise_rate
was last called.
.Fa ra_raise_interval