Changes between Version 5 and Version 6 of 802.11/wlan_exp/app_notes/tutorial_token_mac/extensions

Timestamp:

Jul 13, 2015, 4:00:07 PM (9 years ago)

Author:

chunter

Comment:

--

802.11/wlan_exp/app_notes/tutorial_token_mac/extensions

@@ -101 +101 @@
 ----
 
+=== Access Point (AP) ===
+
+Changes should be made to [browser:ReferenceDesigns/w3_802.11/c/wlan_mac_high_ap/wlan_mac_ap.c wlan_mac_ap.c].
+
+----
+
+First, we need to add a few global variables to the top of the AP code. Add the following code snippet:
+
+{{{
+#!c
+
+u8              token_addr[6];
+u64             token_ap_num_tx_bytes;
+u8              token_ap_res_mult_factor;
+
+u64             token_sta_num_rx_bytes_start;
+}}}
+
+We will use these variables in the coming sections. Furthermore, add the following line somewhere in the AP's main() function to give it a sane default:
+
+{{{
+#!c
+
+token_ap_res_mult_factor = TOKEN_RES_MULT_FACTOR_MIN;
+}}}
+
+---- 
+
+Next we will let {{{set_new_reservation}}} set the reservation duration as a function of a per-station multiplication factor. In the existing function find the {{{ipc_payload.res_duration = DEFAULT_RESERVATION_DURATION_USEC;}}} line within the {{{if(curr_station_info_entry == NULL){}}} clause. Replaces this line with
+
+{{{
+#!c
+
+ipc_payload.res_duration = DEFAULT_RESERVATION_DURATION_USEC * token_ap_res_mult_factor;
+}}}
+
+Here, {{{token_ap_res_mult_factor}}} is the top-level variable we just added. If we make no other changes, then this value will be fixed at {{{TOKEN_RES_MULT_FACTOR_MIN}}}.
+
+----
+
 == Characterizing Extended TokenMAC ==