Changes between Version 7 and Version 8 of 802.11/PacketFlow

Timestamp:

Nov 26, 2013, 8:47:32 AM (10 years ago)

Author:

chunter

Comment:

--

802.11/PacketFlow

@@ -23 +23 @@
 === Packet Buffer Contents ===
 
-Each packet buffer stores more than just the raw Tx/Rx bytes for the PHY. The MAC uses each buffer to store other metadata. The contents of each packet buffer are illustrated below.
+Each packet buffer stores more than just the raw Tx/Rx bytes for the PHY. The MAC uses each buffer to store other metadata. The contents of each packet buffer are shown in the below table:
 
-[[Image(wiki:802.11/files:wlan_ref_des_pkt_buf_offsets.png,height=300)]]
+|| ||= TX Packet Buffer =||= RX Packet Buffer =||
+|| frame_info ||  32 bytes  ||  272 bytes  ||
+|| PHY Header ||  8 bytes  ||  8 bytes  ||
+|| MAC Header||  24 bytes  ||  24 bytes  ||
+|| Payload ||  [0,  ||  [0,  ||
+|| FCS ||  4 bytes  ||  4 bytes  ||
 
 The MAC code utilizes the first section of each packet buffer for metadata about the packet contained in that buffer. This metadata is stored in the {{{tx_frame_info}}} and {{{rx_frame_info}}} structs, defined in [source:ReferenceDesigns/w3_802.11/c/wlan_mac_common/include/wlan_mac_misc_util.h wlan_mac_misc_util.h]. This metadata includes the per-subcarrier channel estimates from the RX PHY.