src / sys / rpc

clnt_dg.c

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Sunday 22 Nov 2020
1:57 am

Lucas Holt

Change the xid for client side krpc over UDP to a global value.

Without this patch, the xid used for the client side krpc requests over

UDP was initialized for each "connection". A "connection" for UDP is

rather sketchy and for the kernel NLM a new one is created every 2minutes.

A problem with client side interoperability with a Netapp server for the NLM

was reported and it is believed to be caused by reuse of the same xid.

Although this was never completely diagnosed by the reporter, I could see

how the same xid might get reused, since it is initialized to a value

based on the TOD clock every two minutes.

I suspect initializing the value for every "connection" was inherited from

userland library code, where having a global xid was not practical.

However, implementing a global "xid" for the kernel rpc is straightforward

and will ensure that an xid value is not reused for a long time. This

patch does that and is hoped it will fix the Netapp interoperability

problem.

Obtained from: FreeBSD

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Monday 16 Mar 2020
10:56 pm

Lucas Holt

Sync with FreeBSD 11-stable.

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Friday 25 May 2018
8:45 am

Lucas Holt

sync with freebsd 10

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Saturday 05 Jan 2013
3:23 pm

Lucas Holt

tag and remove dead code

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Tuesday 09 Oct 2012
12:08 am

Lucas Holt

sync with freebsd 9 stable.

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Saturday 24 Mar 2012
5:41 pm

Lucas Holt

start the kernel lock manager work

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  2. … 118 more files in changeset.