added plan for vnf p7

nfapi/README.md

@@ -19,3 +19,35 @@ sudo RFSIMULATOR=server <oai_codebase>/cmake_targets/ran_build/build/nr-softmode
 ```
 sudo <oai_codebase>/cmake_targets/ran_build/build/nr-softmodem -O <oai_codebase>/targets/PROJECTS/GENERIC-LTE-EPC/CONF/rcc.band78.tm1.106PRB.nfapi.conf --vnf
 ```
+
+# 20 July 2020
+## Plan
+
+### Task-A [packing]
+* Modify `nfapi_p7_message_pack()` in `nfapi_p7.c`
+* In the switch case, change the labels as well as the pack functions:
+    * `pack_dl_config_request` becomes `pack_dl_tti_request`
+    * `pack_ul_config_request` becomes `pack_ul_tti_request`
+    * `pack_hi_dci0_request` becomes `pack_ul_dci_request`
+    * `pack_tx_request` becomes `pack_tx_data_request`
+
+### Task-B [unpacking]
+* Modify `nfapi_p7_message_unpack()` in `nfapi_p7.c`
+* Similarly change all the `unpack` functions within the switch-case block.
+* Modify the behaviour of `check_unpack_length()` for the new `TAGS`
+
+### Task-C
+* Write the `dl_tti` alternative for `nfapi_vnf_p7_dl_config_req()` in `vnf_p7_interface.c` and other such functions.
+* Also check the function `vnf_p7_pack_and_send_p7_msg()` in `vnf_p7.c` for upgrade.
+* Write the `dl_tti` equivalent for `oai_nfapi_dl_config_req` in `nfapi_vnf.c` and other such functions.
+* Check if `nr_schedule_response()` needs to be upgraded
+
+### Testing
+* Test by running VNF on a terminal and PNF in rfsim parallely
+* If all works fine, move to UE testing.
+
+* Testing with a UE
+    * Run VNF
+    * Run PNF in rfsim
+    * Run UE in rfsim
+* This can be done on parallel terminals on the same machine or different machine with the appropriate configuration
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