Re: [PATCH 31/33] sctp: add sctp_sock_set_nodelay

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On Wed, May 20, 2020 at 08:39:13PM -0300, Marcelo Ricardo Leitner wrote:
> On Wed, May 20, 2020 at 04:23:55PM -0700, David Miller wrote:
> > From: Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx>
> > Date: Wed, 20 May 2020 20:10:01 -0300
> > 
> > > The duplication with sctp_setsockopt_nodelay() is quite silly/bad.
> > > Also, why have the 'true' hardcoded? It's what dlm uses, yes, but the
> > > API could be a bit more complete than that.
> > 
> > The APIs are being designed based upon what in-tree users actually
> > make use of.  We can expand things later if necessary.
> 
> Sometimes expanding things later can be though, thus why the worry.
> But ok, I get it. Thanks.
> 
> The comment still applies, though. (re the duplication)

Where do you see duplication?

sctp_setsockopt_nodelay does the following things:

 - verifies optlen, returns -EINVAL if it doesn't match
 - calls get_user, returns -EFAULT on error
 - converts the value from get_user to a boolean and assigns it
   to sctp_sk(sk)->nodelay
 - returns 0.

sctp_sock_set_nodelay does:

 - call lock_sock
 - assign true to sctp_sk(sk)->nodelay
 - call release_sock
 - does not return an error code



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