SWRU576 January   2021 WL1801MOD , WL1805MOD , WL1807MOD , WL1831MOD , WL1835MOD , WL1837MOD

 

  1.   Trademarks
  2. 1 Introduction
    1. 1.1 Acronyms Used in This Document
  3. 2 Peer to Peer (P2P) Mode
    1. 2.1 P2P Device
      1. 2.1.1 Searching Phase
      2. 2.1.2 Negotiation
      3. 2.1.3 Group Formation
    2. 2.2 PSP Client
    3. 2.3 P2P GO
    4. 2.4 P2P Commands
      1. 2.4.1 P2P Commands Detailed Information
        1. 2.4.1.1 p2p_find
        2. 2.4.1.2 p2p_connect
        3. 2.4.1.3 p2p_listen
        4. 2.4.1.4 p2p_group_add
        5. 2.4.1.5 p2p_group_remove
        6. 2.4.1.6 p2p_peer
        7. 2.4.1.7 p2p_invite
      2. 2.4.2 P2P Event Details
    5. 2.5 P2P Use Cases
      1. 2.5.1 P2P Connection in PBC (Push Button Control)
      2. 2.5.2 Create Autonomous 1:2 P2P Group (Push button Control)
        1. 2.5.2.1 Assigning IP Address in P2P Mode Using DHCP Method
        2. 2.5.2.2 Create 1:2 P2P Group - Connect With PIN Code
        3. 2.5.2.3 P2P Invitation Procedure - Create Autonomous 1:2 P2P Group, (Push button Control)
  4. 3 Access Point (AP) and Peer-to-Peer (P2P) Multirole
    1. 3.1 Errata/Limitations
  5. 4 Multi BSSID (mBSSID)
    1. 4.1 Setup and Configuration
    2. 4.2 User Guide and Examples
  6. 5 Access Point (AP) Enhanced Low Power (ELP) Mode
    1. 5.1 Setup and Configuration
    2. 5.2 User Guide and Examples
    3. 5.3 Errata/Limitations
  7. 6 WiLink8 Wake on WLAN (WoWLAN) Feature
    1. 6.1 Mode of Operation
    2. 6.2 Adding "Suspend/Resume" WoW Mode to AM335x EVM
      1. 6.2.1 Patch Description
    3. 6.3 WoWLAN (Wake on WLAN) Mode Enable Procedure
      1. 6.3.1 Commands and Expected Output
      2. 6.3.2 Rx Filter Configuration
        1. 6.3.2.1 Rx Filter Configuration Examples
    4. 6.4 WoWLAN - Magic Packet
    5. 6.5 Block Acknowledgement (BA) Filter Setting
    6. 6.6 Hardware Modification Engineering Change Order (ECO) Request for AM335x EVM
  8. 7 WiLink8 Suspend Resume Mode
    1. 7.1 Suspend Resume Example With AM437x SDK
  9. 8 Access Point (AP) Dynamic Frequency Selection (DFS) Master Support
    1. 8.1 Setup and Configuration
    2. 8.2 User Guide & Examples
    3. 8.3 Errata/Limitations
  10. 9 Station Mode - Alternative Method, With iw Commands, Explained
    1. 9.1 Step 1- Check if the wlan0 Interface is Already Running
    2. 9.2 Step 2- Bringup wlan0 Interface if Not Running
    3. 9.3 Step 3 - Connect Device to Available Acces Point
  11. 10References

6.3.2 Rx Filter Configuration

Once enabled, WoWLAN patterns are searched by the chip firmware in every incoming data packet. Once a pattern is detected the chip wakes up the host. To configure WoWLAN patterns iw utility is used. The patterns begin with an 802.3 (Ethernet) header with the correct source/destination MACs (it is NOT the actual 802.11 header which is transmitted in the air).

Rx filters can be enabled in suspend or in awake states.

Table 6-1 802.3 MAC Header Pattern
Parameter Number of Bytes
Destination MAC Address 6
Source MAC Address 6
EtherType 2
PayLoad 46-1500
CRC 4
Payload could be any upper layer protocol. For filtering purposes we will only show IP header. This is because when filtering other protocols there is no need to go into parsing the MAC payload. When configuring a filter for ARP or EAPOL there is no need to configure pattern in the ARP/EAPOL header as you want to pass all of them.

Following is the pattern/template for IP Filter enabling packet. 

AA:AA:AA:AA:AA:AA:BB:BB:BB:BB:BB:BB:CC:CC:DD:-:-:-:-:-:-:-:-:EE:-:-:FF:FF:FF:FF:GG:GG:GG:GG:HH:HH:II:II
    A Ethernet destination address
    B Ethernet source address
    D IP header VER+Hlen, use: 0x45 ( 4 – is for ver 4, 5 is for len 20)
    F IP source address ( 192.168.0.4: C0:A8:00:2C )
    G IP destination address ( 192.168.0.4: C0:A8:00:2C )
    H Source port (1024: 04:00)
    I Destination port (1024: 04:00)
Note:
  • Only 7 patterns can be active at any time
  • Max size is 81 bytes
  • No more than 7 segments for each pattern, if pattern crosses layer header it counts as two segments (each segment has an overhead of 4 bytes).