'\" t
.\"     Title: struct ieee80211_iface_combination
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Device registration
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "STRUCT IEEE80211_IFA" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Device registration"
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.SH "NAME"
struct_ieee80211_iface_combination \- possible interface combination
.SH "SYNOPSIS"
.sp
.nf
struct ieee80211_iface_combination {
  const struct ieee80211_iface_limit * limits;
  u32 num_different_channels;
  u16 max_interfaces;
  u8 n_limits;
  bool beacon_int_infra_match;
  u8 radar_detect_widths;
  u8 radar_detect_regions;
};  
.fi
.SH "MEMBERS"
.PP
limits
.RS 4
limits for the given interface types
.RE
.PP
num_different_channels
.RS 4
can use up to this many different channels
.RE
.PP
max_interfaces
.RS 4
maximum number of interfaces in total allowed in this group
.RE
.PP
n_limits
.RS 4
number of limitations
.RE
.PP
beacon_int_infra_match
.RS 4
In this combination, the beacon intervals between infrastructure and AP types must match\&. This is required only in special cases\&.
.RE
.PP
radar_detect_widths
.RS 4
bitmap of channel widths supported for radar detection
.RE
.PP
radar_detect_regions
.RS 4
bitmap of regions supported for radar detection
.RE
.SH "DESCRIPTION"
.PP
With this structure the driver can describe which interface combinations it supports concurrently\&.
.SH "EXAMPLES"
.sp
.if n \{\
.RS 4
.\}
.nf

   1\&. Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total:

    struct ieee80211_iface_limit limits1[] = {
   	{ \&.max = 1, \&.types = BIT(NL80211_IFTYPE_STATION), },
   	{ \&.max = 1, \&.types = BIT(NL80211_IFTYPE_AP}, },
    };
    struct ieee80211_iface_combination combination1 = {
   	\&.limits = limits1,
   	\&.n_limits = ARRAY_SIZE(limits1),
   	\&.max_interfaces = 2,
   	\&.beacon_int_infra_match = true,
    };


   2\&. Allow #{AP, P2P\-GO} <= 8, channels = 1, 8 total:

    struct ieee80211_iface_limit limits2[] = {
   	{ \&.max = 8, \&.types = BIT(NL80211_IFTYPE_AP) |
   			     BIT(NL80211_IFTYPE_P2P_GO), },
    };
    struct ieee80211_iface_combination combination2 = {
   	\&.limits = limits2,
   	\&.n_limits = ARRAY_SIZE(limits2),
   	\&.max_interfaces = 8,
   	\&.num_different_channels = 1,
    };


   3\&. Allow #STA <= 1, #{P2P\-client,P2P\-GO} <= 3 on two channels, 4 total\&.

   This allows for an infrastructure connection and three P2P connections\&.

    struct ieee80211_iface_limit limits3[] = {
   	{ \&.max = 1, \&.types = BIT(NL80211_IFTYPE_STATION), },
   	{ \&.max = 3, \&.types = BIT(NL80211_IFTYPE_P2P_GO) |
   			     BIT(NL80211_IFTYPE_P2P_CLIENT), },
    };
    struct ieee80211_iface_combination combination3 = {
   	\&.limits = limits3,
   	\&.n_limits = ARRAY_SIZE(limits3),
   	\&.max_interfaces = 4,
   	\&.num_different_channels = 2,
    };
.fi
.if n \{\
.RE
.\}
.SH "AUTHOR"
.PP
\fBJohannes Berg\fR <\&johannes@sipsolutions.net\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br