netdev - Re: [PATCH net-next] tcp: Add TCP tracer

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Message-ID: <20141202175115.53f1f56b@urahara>
Date:	Tue, 2 Dec 2014 17:51:15 -0800
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Martin KaFai Lau <kafai@...com>
Cc:	<davem@...emloft.net>, <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] tcp: Add TCP tracer

On Tue, 2 Dec 2014 12:37:42 -0800
Martin KaFai Lau <kafai@...com> wrote:

> diff --git a/include/uapi/linux/tcp_trace.h b/include/uapi/linux/tcp_trace.h
> index 2644f7f..d913a3c 100644
> --- a/include/uapi/linux/tcp_trace.h
> +++ b/include/uapi/linux/tcp_trace.h
> @@ -22,11 +22,11 @@ struct tcp_stats {
>  	__u32	other_segs_retrans;
>  	__u32	other_octets_retrans;
>  	__u32	loss_segs_retrans;
> -	__u32	loss_octects_retrans;
> +	__u32	loss_octets_retrans;
>  	__u32	segs_in;
>  	__u32	data_segs_in;
> -	__u64	rtt_sample_us;
>  	__u64	data_octets_in;
> +	__u64	rtt_sample_us;
>  	__u64	max_rtt_us;
>  	__u64	min_rtt_us;
>  	__u64   sum_rtt_us;
> @@ -64,9 +64,4 @@ struct tcp_trace_stats {
>          struct tcp_stats stats;
>  } __packed;

You can't change exposed kernel API like that.
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