Nintendo Switch Brew

LDN services: Difference between revisions

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=== SendActionFrame ===
=== SendActionFrame ===
Takes a type-0x21 input buffer, two input [[#MacAddress]], two input s16s ('''Band''' and '''ChannelNumber''') and an input [[#MessageFlagSet]]. No output.
Takes a type-0x21 input buffer, two input [[#MacAddress]], two input s16s ('''Band''' and '''ChannelNumber''') and an input [[#MessageFlagSet]]. No output.
[20.0.0+] The input s16s were replaced with a single u16, which has the same format as [[#SetHomeChannel|SetHomeChannel]].
The first [[#MacAddress]] is the destination, the second [[#MacAddress]] is the Bssid.
The ChannelNumber must be non-zero.


[[#State|State]] must be 3-4 (AccessPointCreated/Station).
[[#State|State]] must be 3-4 (AccessPointCreated/Station).


On NX this sends a raw action frame with the input buffer as the data?
=== RecvActionFrame ===
Takes a type-0x22 output buffer and an input [[#MessageFlagSet]]. Returns two output [[#MacAddress]], two output s16s ('''Band''' and '''ChannelNumber'''), an output u32 '''Size''', and an output s32 '''LinkLevel'''.


=== RecvActionFrame ===
[20.0.0+] The output s16s were replaced with a single u16, which has the same format as [[#SetHomeChannel|SetHomeChannel]].
Takes a type-0x22 output buffer and an input [[#MessageFlagSet]]. Returns an output u32 '''Size''', two output [[#MacAddress]], two output s16s ('''Band''' and '''ChannelNumber''') and an output s32 '''LinkLevel'''.


[[#EnableActionFrame|EnableActionFrame]] must be used prior to this.
[[#EnableActionFrame|EnableActionFrame]] must be used prior to this.
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On NX Band must be ([20.0.0+] converted Band from the above array) 50 ([20.0.0+] 5000) or 24 ([20.0.0+] 2400).
On NX Band must be ([20.0.0+] converted Band from the above array) 50 ([20.0.0+] 5000) or 24 ([20.0.0+] 2400).
The ChannelNumber must be non-zero.


The [[#State|State]] must be Station.
The [[#State|State]] must be Station.
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|}
|}


SecurityMode must be 1-2. The same SecurityMode override functionality from elsewhere is used here.
SecurityMode must be 1-2. The same SecurityMode override functionality from elsewhere is used later with this.
 
The same LocalCommunicationId override/validation from elsewhere is used with the input as well.


= MessageFlagSet =
= MessageFlagSet =
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! Description
! Description
|-
|-
| 0x0 || 0x40 || Zeros. [6.0.0-?] Only included in the frame if it's enabled (+0x0 [[#AuthVersion]] >= 3). Unused by the Station.
| 0x0 || 0x1 ||
|-
| 0x1 || 0x3F || Zeros. [6.0.0-?] Only included in the frame if it's enabled (+0x0 [[#AuthVersion]] >= 3). Unused by the Station.
|-
|-
| 0x40 || 0x44 || [6.0.0-?] Only included in the frame if it's enabled (+0x0 [[#AuthVersion]] >= 3). Unused by the Station.
| 0x40 || 0x44 || [6.0.0-?] Only included in the frame if it's enabled (+0x0 [[#AuthVersion]] >= 3). Unused by the Station.
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=== ActionFrame2 ===
=== ActionFrame2 ===
The Action frames used by [[#RecvActionFrame|RecvActionFrame]] have the following structure:
The Action frames used by [[#SendActionFrame|SendActionFrame]]/[[#RecvActionFrame|RecvActionFrame]] have the following structure:
* "Fixed parameters":
* "Fixed parameters":
** "Category code: Vendor Specific (127)"
** "Category code: Vendor Specific (127)"
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| 0x2 || 0x2 || Protocol ID, must match big-endian 0x0102.
| 0x2 || 0x2 || Protocol ID, must match big-endian 0x0102.
|-
|-
| 0x4 || 0x2 ||  
| 0x4 || 0x2 || 00 00
|-
|-
| 0x6 || 0x2 ||  
| 0x6 || 0x2 || 00 00
|}
|}


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The key is derived similar to the regular action-frame key (same KeySource), except: the Generation is always [[17.0.0|0x11]], with the following data for hashing: {big-endian LocalCommunicationId} {+0x10 size 0x10-bytes} {[[#ActionFrameSettings]] Passphrase with the specified PassphraseSize}.
The key is derived similar to the regular action-frame key (same KeySource), except: the Generation is always [[17.0.0|0x11]], with the following data for hashing: {big-endian LocalCommunicationId} {+0x10 size 0x10-bytes} {[[#ActionFrameSettings]] Passphrase with the specified PassphraseSize}.
The data payload is the data buffer for [[#SendActionFrame|SendActionFrame]]/[[#RecvActionFrame|RecvActionFrame]].


== lp2p ==
== lp2p ==
Retrieved from "https://switchbrew.org/wiki/LDN_services"