GSOC2021NixVector - Revision history

Tomh: add final report link

2021-09-08T21:10:52Z

add final report link

← Older revision		Revision as of 21:10, 8 September 2021
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	* '''Project Proposal:''' [https://drive.google.com/file/d/18IpyX-UdrX7v_Xh-jpEixdEExq_0gsZa/view?usp=sharing link]		* '''Project Proposal:''' [https://drive.google.com/file/d/18IpyX-UdrX7v_Xh-jpEixdEExq_0gsZa/view?usp=sharing link]
	* '''Design Document:''' [https://docs.google.com/document/d/1WIxH8Eak-5tDU3jYH9Kf9BQqoZQ0nF0gSwaM59Lup5E/edit?usp=sharing link]		* '''Design Document:''' [https://docs.google.com/document/d/1WIxH8Eak-5tDU3jYH9Kf9BQqoZQ0nF0gSwaM59Lup5E/edit?usp=sharing link]
			* '''[[GSOC2021NixVectorFinalReport \| Final report]]'''

	= Milestones and Deliverables =		= Milestones and Deliverables =

Ameyanrd at 16:40, 23 August 2021

2021-08-23T16:40:51Z

← Older revision		Revision as of 16:40, 23 August 2021
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	* All the 4 MRs have merged now ([https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/656 1], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 2], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/678 3] and [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/640 4]).		* All the 4 MRs have merged now ([https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/656 1], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 2], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/678 3] and [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/640 4]).
	* This week, I worked on any unresolved threads remaining.		* This week, I worked on any unresolved threads remaining.
	* Created a new MR for handling multiple Wifi networks with the same channel object [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/~~691~~ MR].		* Created a new MR for handling multiple Wifi networks with the same channel object [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/690 MR].
	* Worked on extending the nix-double-wifi.cc example to IPv6 and its documentation.		* Worked on extending the nix-double-wifi.cc example to IPv6 and its documentation.
	* We observed a small issue in the Nix-vector generated in the tests in the existing code. However, the path remains the same. The new patch for multiple wifi also fixes it. The issue is that when we turn an interface on, say a remote NetDevice down, and then for the current node, it should not count as a neighbor (ideally). This behavior is changed, and we check if the current NetDevice interface and the remote NetDevice interfaces are up.		* We observed a small issue in the Nix-vector generated in the tests in the existing code. However, the path remains the same. The new patch for multiple wifi also fixes it. The issue is that when we turn an interface on, say a remote NetDevice down, and then for the current node, it should not count as a neighbor (ideally). This behavior is changed, and we check if the current NetDevice interface and the remote NetDevice interfaces are up.
	* Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.		* Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.

Ameyanrd at 17:24, 16 August 2021

2021-08-16T17:24:48Z

← Older revision		Revision as of 17:24, 16 August 2021
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	'''Duration:''' August 2 - August 8		'''Duration:''' August 2 - August 8

	* Worked on debugging the new code which ~~handle~~ two wifi networks (using the same Wifi channel object).		* Worked on debugging the new code, which handles two wifi networks (using the same Wifi channel object).
	* The code and example is ready, and I'll create an MR for it in the next week.		* The code and example are ready, and I'll create an MR for it in the next week.
	* We suspect that Nix will also work on a topology having WiFi and LTE. Again, next week, we'll test if it works.		* We suspect that Nix will also work on a topology having WiFi and LTE. Again, next week, we'll test if it works.
	* Worked on the MR [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/656 1], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/640 2] comments.		* Worked on the MR [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/656 1], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/640 2] comments.
			* Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.

			=== Week 10 ===
			'''Duration:''' August 9 - August 15

			* All the 4 MRs have merged now ([https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/656 1], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 2], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/678 3] and [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/640 4]).
			* This week, I worked on any unresolved threads remaining.
			* Created a new MR for handling multiple Wifi networks with the same channel object [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/691 MR].
			* Worked on extending the nix-double-wifi.cc example to IPv6 and its documentation.
			* We observed a small issue in the Nix-vector generated in the tests in the existing code. However, the path remains the same. The new patch for multiple wifi also fixes it. The issue is that when we turn an interface on, say a remote NetDevice down, and then for the current node, it should not count as a neighbor (ideally). This behavior is changed, and we check if the current NetDevice interface and the remote NetDevice interfaces are up.
	* Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.		* Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.

Ameyanrd at 19:33, 9 August 2021

2021-08-09T19:33:05Z

@@ Line 135: / Line 135: @@
 * Current status for compatibility with wifi: IPv4 is working good but IPv6 programs are crashing. Debugging in process.
 * At this point, all the MRs ([https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/640 1], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/656 2], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/678 3] and [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 4]) are updated on the comments. Any more comments or suggestions are welcome!
 * Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.

Ameyanrd at 17:23, 2 August 2021

2021-08-02T17:23:07Z

@@ Line 125: / Line 125: @@
 * The way we are trying to fix Wifi Netdevices support in Nix is to check whether the ''remoteNetDevice'' is in the same subnet as of the ''currentNetDevice''.
 * The IPv4 code seems to work but IPv6 programs are crashing and we are in the middle of debugging it for the exact reason.
 * Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.

Ameyanrd at 17:53, 26 July 2021

2021-07-26T17:53:43Z

← Older revision		Revision as of 17:53, 26 July 2021
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	* Documentation is updated on IPv6 capabilities, API usage, examples, limitations, etc.		* Documentation is updated on IPv6 capabilities, API usage, examples, limitations, etc.
	* The docs MR [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/678 link]		* The docs MR [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/678 link]

			=== Week 7 ===
			'''Duration:''' July 19 - July 25

			* Working on the Nix limitations for Wifi.
			* Nix fails in case Wifi NetDevices are used in the network.
			* This mainly happens because Nix tries to build the path directly through the Wifi network if required.
			* There are some more limitations in Nix which we identified as Nix installed only on a subset of the nodes and not all the nodes. But since Nix is used for large topologies and is not a real routing protocol, we have kept this idea at the least priority for now.
			* The way we are trying to fix Wifi Netdevices support in Nix is to check whether the ''remoteNetDevice'' is in the same subnet as of the ''currentNetDevice''.
			* The IPv4 code seems to work but IPv6 programs are crashing and we are in the middle of debugging it for the exact reason.
			* Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.

Ameyanrd at 18:48, 19 July 2021

2021-07-19T18:48:28Z

← Older revision		Revision as of 18:48, 19 July 2021
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	* There are 3 open merge requests at this point [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/656 1], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 2] and [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/640 3].		* There are 3 open merge requests at this point [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/656 1], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 2] and [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/640 3].
	* Please find the latest code on the project at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.		* Please find the latest code on the project at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.

			=== Week 6 ===
			'''Duration:''' July 12 - July 18

			* Completed a working implementation of IPv6 Nix-Vector routing.
			* Along with the functionality, the initial tests for IPv4 and IPv6 testing are added.
			* The existing examples are modified to take a parameter for IPv4 and IPv6.
			* Documentation is updated on IPv6 capabilities, API usage, examples, limitations, etc.
			* The docs MR [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/678 link]

Ameyanrd at 18:21, 12 July 2021

2021-07-12T18:21:58Z

← Older revision		Revision as of 18:21, 12 July 2021
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	* Apart from that, we noticed that Doxygen is generating warnings for the template specialized functions.		* Apart from that, we noticed that Doxygen is generating warnings for the template specialized functions.
	* Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.		* Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.

			=== Week 5 ===
			'''Duration:''' July 5 - July 11

			* Completed with the NMS-P2P example and tests.
			* Resolved an issue in the BFS logic. There was no check for the incoming interfaces in the logic. And this resulted in packet routing, even if it was not intended.
			* We detected that Clang requires explicit declaration of public functions in the .cc file; otherwise, it leads to a linking error. On the other hand, GCC can detect the declarations in the .h file easily.
			* Introduced a flag in the example to distinguish IPv4 and IPv6 examples instead of having redundant files.
			* Another thing (as mentioned before), we found that Doxygen shows a warning for C++ template specialized functions and does not take documentation for the generic one.
			* Worked on the comments and suggestions on the Merge Requests.
			* There are 3 open merge requests at this point [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/656 1], [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 2] and [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/640 3].
			* Please find the latest code on the project at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.

Ameyanrd at 21:40, 4 July 2021

2021-07-04T21:40:10Z

← Older revision		Revision as of 21:40, 4 July 2021
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	* A simple IPv6 Nix-Vector routing example is also created, similar to nix-simple.cc.		* A simple IPv6 Nix-Vector routing example is also created, similar to nix-simple.cc.
	* MR updated: [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 link]		* MR updated: [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 link]

			=== Week 4 ===
			'''Duration:''' June 28 - July 4

			* Worked on the nms-p2p example and tests for IPv6 NixRouting.
			* There are a couple of issues I am facing with the above implementations. We have noticed a crash when we set an IPv6 interface down. I am digging to why it is happening.
			* There a few issues with the nms-p2p example as well but I am working on them.
			* Apart from that, we noticed that Doxygen is generating warnings for the template specialized functions.
			* Please find the latest code at the [https://gitlab.com/ameyanrd/ns-3-dev/-/commits/gsoc-21/ gsoc-21] branch.

Ameyanrd at 08:56, 28 June 2021

2021-06-28T08:56:42Z

← Older revision		Revision as of 08:56, 28 June 2021
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	* Completed the basic IPv6 Nix-Vector Routing code.		* Completed the basic IPv6 Nix-Vector Routing code.
	* The routing issues in the case of IPv6, encountered last week, are solved now.		* The routing issues in the case of IPv6, encountered last week, are solved now.
	* While adding the IPv6 code, the RouteOutput () and RouteInput () functions have different ~~handling~~ cases. So, I have used C++ template specialization to handle it.		* While adding the IPv6 code, the RouteOutput () and RouteInput () functions have to handle different cases. So, I have used C++ template specialization to handle it.
	* Nix did not have the logic for forwarding (usage of SetForwarding () and IsForwarding ()) functions. This was added for IPv4 and IPv6.		* Nix did not have the logic for forwarding (usage of SetForwarding () and IsForwarding ()) functions. This was added for IPv4 and IPv6.
	* A simple IPv6 Nix-Vector routing example is also created, similar to nix-simple.cc.		* A simple IPv6 Nix-Vector routing example is also created, similar to nix-simple.cc.
	* MR updated: [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 link]		* MR updated: [https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/646 link]