netdev - Re: [PATCH v2 RESEND] ethtool: Include SFP serial number and date in EEPROM dump

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Message-ID: <1433102982.6319.112.camel@decadent.org.uk>
Date:	Sun, 31 May 2015 21:09:42 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Ed Swierk <eswierk@...portsystems.com>
Cc:	Ben Hutchings <bwh@...nel.org>, netdev@...r.kernel.org
Subject: Re: [PATCH v2 RESEND] ethtool: Include SFP serial number and date
 in EEPROM dump

On Mon, 2015-05-18 at 19:46 -0700, Ed Swierk wrote:
> ethtool -m currently omits the serial number, date code, and other useful
> EEPROM fields defined in INF-8074, which is part of the SFF-8079 standard.
> This patch adds them.
> 
> It also trims space characters from the end of ASCII text fields.
> 
> $ ethtool -m eth0
> ...
> 	Option values                             : 0x00 0x10
> 	Option                                    : TX_DISABLE implemented
> 	BR margin, max                            : 0%
> 	BR margin, min                            : 0%
> 	Vendor SN                                 : AGC143953079
> 	Date code                                 : 140926
> 
> Signed-off-by: Ed Swierk <eswierk@...portsystems.com>

Applied, thanks.

Ben.

> ---
>  sfpid.c | 41 +++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 41 insertions(+)
> 
> diff --git a/sfpid.c b/sfpid.c
> index 4f88aa2..b1a5044 100644
> --- a/sfpid.c
> +++ b/sfpid.c
> @@ -355,6 +355,8 @@ static void sff8079_show_ascii(const __u8 *id, unsigned int first_reg,
>  	unsigned int reg, val;
>  
>  	printf("\t%-41s : ", name);
> +	while (first_reg <= last_reg && id[last_reg] == ' ')
> +		last_reg--;
>  	for (reg = first_reg; reg <= last_reg; reg++) {
>  		val = id[reg];
>  		putchar(((val >= 32) && (val <= 126)) ? val : '_');
> @@ -362,6 +364,40 @@ static void sff8079_show_ascii(const __u8 *id, unsigned int first_reg,
>  	printf("\n");
>  }
>  
> +static void sff8079_show_options(const __u8 *id)
> +{
> +	static const char *pfx =
> +		"\tOption                                    :";
> +
> +	printf("\t%-41s : 0x%02x 0x%02x\n", "Option values", id[64], id[65]);
> +	if (id[65] & (1 << 1))
> +		printf("%s RX_LOS implemented\n", pfx);
> +	if (id[65] & (1 << 2))
> +		printf("%s RX_LOS implemented, inverted\n", pfx);
> +	if (id[65] & (1 << 3))
> +		printf("%s TX_FAULT implemented\n", pfx);
> +	if (id[65] & (1 << 4))
> +		printf("%s TX_DISABLE implemented\n", pfx);
> +	if (id[65] & (1 << 5))
> +		printf("%s RATE_SELECT implemented\n", pfx);
> +	if (id[65] & (1 << 6))
> +		printf("%s Tunable transmitter technology\n", pfx);
> +	if (id[65] & (1 << 7))
> +		printf("%s Receiver decision threshold implemented\n", pfx);
> +	if (id[64] & (1 << 0))
> +		printf("%s Linear receiver output implemented\n", pfx);
> +	if (id[64] & (1 << 1))
> +		printf("%s Power level 2 requirement\n", pfx);
> +	if (id[64] & (1 << 2))
> +		printf("%s Cooled transceiver implemented\n", pfx);
> +	if (id[64] & (1 << 3))
> +		printf("%s Retimer or CDR implemented\n", pfx);
> +	if (id[64] & (1 << 4))
> +		printf("%s Paging implemented\n", pfx);
> +	if (id[64] & (1 << 5))
> +		printf("%s Power level 3 requirement\n", pfx);
> +}
> +
>  void sff8079_show_all(const __u8 *id)
>  {
>  	sff8079_show_identifier(id);
> @@ -385,5 +421,10 @@ void sff8079_show_all(const __u8 *id)
>  		sff8079_show_oui(id);
>  		sff8079_show_ascii(id, 40, 55, "Vendor PN");
>  		sff8079_show_ascii(id, 56, 59, "Vendor rev");
> +		sff8079_show_options(id);
> +		sff8079_show_value_with_unit(id, 66, "BR margin, max", 1, "%");
> +		sff8079_show_value_with_unit(id, 67, "BR margin, min", 1, "%");
> +		sff8079_show_ascii(id, 68, 83, "Vendor SN");
> +		sff8079_show_ascii(id, 84, 91, "Date code");
>  	}
>  }

-- 
Ben Hutchings
Reality is just a crutch for people who can't handle science fiction.

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