netdev - RE: [PATCH v2 1/2] net/sctp: Make wrappers for accessing in/out streams

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Date:   Fri, 3 Aug 2018 16:41:38 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Konstantin Khorenko' <khorenko@...tuozzo.com>,
        Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
CC:     "oleg.babin@...il.com" <oleg.babin@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-sctp@...r.kernel.org" <linux-sctp@...r.kernel.org>,
        "David S . Miller" <davem@...emloft.net>,
        "Vlad Yasevich" <vyasevich@...il.com>,
        Neil Horman <nhorman@...driver.com>,
        Xin Long <lucien.xin@...il.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>
Subject: RE: [PATCH v2 1/2] net/sctp: Make wrappers for accessing in/out
 streams

From: Konstantin Khorenko
> Sent: 03 August 2018 17:21
...
> --- a/net/sctp/stream.c
> +++ b/net/sctp/stream.c
> @@ -37,6 +37,18 @@
>  #include <net/sctp/sm.h>
>  #include <net/sctp/stream_sched.h>
> 
> +struct sctp_stream_out *sctp_stream_out(const struct sctp_stream *stream,
> +					__u16 sid)
> +{
> +	return ((struct sctp_stream_out *)(stream->out)) + sid;
> +}
> +
> +struct sctp_stream_in *sctp_stream_in(const struct sctp_stream *stream,
> +				      __u16 sid)
> +{
> +	return ((struct sctp_stream_in *)(stream->in)) + sid;
> +}
> +

Those look like they ought to be static inlines in the header file.
Otherwise you'll be making SCTP performance worse that it is already.

	David

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