Attention is currently required from: its_Giaan, ordex, plaisthos.

cron2 has posted comments on this change by its_Giaan. ( 
http://gerrit.openvpn.net/c/openvpn/+/1635?usp=email )

Change subject: Multisocket: use event engine rwflags for UDP I/O
......................................................................


Patch Set 5: Code-Review-1

(5 comments)

File src/openvpn/forward.h:

http://gerrit.openvpn.net/c/openvpn/+/1635/comment/29dd8fc7_d3d600d3?usp=email :
PS5, Line 78:
can we have proper documentation comments here?


File src/openvpn/forward.c:

http://gerrit.openvpn.net/c/openvpn/+/1635/comment/7defcd1c_cc9f7cff?usp=email :
PS5, Line 2035: {
This function most definitely needs a comment to explain what it does, and 
where it is called from (here or in forward.h).


http://gerrit.openvpn.net/c/openvpn/+/1635/comment/0a8e9c78_fb46a0ad?usp=email :
PS5, Line 2132:  */
We need to extend this comment a bit - the fact that it deals with only one 
socket confuses me every time, and then I go "git grep" and read up on the 
callers.

Maybe something like `it is either called from tunnel_point_to_point() (p2p 
mode) or with the per-client-context from multi_io.c` or something like that.


File src/openvpn/mudp.c:

http://gerrit.openvpn.net/c/openvpn/+/1635/comment/e3384f44_0cc9c3e9?usp=email :
PS5, Line 364: p2mp_iow_flags(const struct multi_context *m, struct link_socket 
*sock)
let's move this function to multi_io.c - this is the only place it's called from


http://gerrit.openvpn.net/c/openvpn/+/1635/comment/6767bb95_e5e79af3?usp=email :
PS5, Line 375:         if (LINK_OUT(&m->pending->context) && 
m->pending->context.c2.link_sockets[0] == sock)
I have my doubts about this change - IOW, I am not understanding this at all.

We call this function in a loop "for all UDP sockets", and then this part does 
nothing unless the socket passed in happens to be "link_sockets[0]".  This is 
really hard to understand code - and if link_sockets[0] happens to be a TCP 
socket, this does nothing at all.  No?

In any case this needs a comment :-) - if I can't understand it, how can we 
expect future maintainers to understand it.



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Gerrit-Project: openvpn
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Gerrit-Change-Id: I6b303805a3688b6f6363140c76853a58badecd8f
Gerrit-Change-Number: 1635
Gerrit-PatchSet: 5
Gerrit-Owner: its_Giaan <[email protected]>
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Gerrit-Reviewer: ordex <[email protected]>
Gerrit-Reviewer: plaisthos <[email protected]>
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Gerrit-Comment-Date: Fri, 12 Jun 2026 18:05:08 +0000
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