Message-ID: <f390207c5c4fd17398b84ce8ae829a49a2c0768b.camel@siemens.com>
Date:   Thu, 17 Aug 2023 17:29:15 +0000
From:   "Sverdlin, Alexander" <alexander.sverdlin@...mens.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "f.fainelli@...il.com" <f.fainelli@...il.com>
CC:     "andrew@...n.ch" <andrew@...n.ch>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "rmk@...linux.org.uk" <rmk@...linux.org.uk>,
        "cphealy@...il.com" <cphealy@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "nikita.yoush@...entembedded.com" <nikita.yoush@...entembedded.com>,
        "vivien.didelot@...oirfairelinux.com" 
        <vivien.didelot@...oirfairelinux.com>,
        "Nisar.Sayed@...rochip.com" <Nisar.Sayed@...rochip.com>,
        "UNGLinuxDriver@...rochip.com" <UNGLinuxDriver@...rochip.com>
Subject: Re: [PATCH ethtool 2/2] ethtool: Add support for PHY test modes

Hello Florian,

On Fri, 2018-04-27 at 17:32 -0700, Florian Fainelli wrote:
> Add two new commands:
> 
> --get-phy-tests which allows fetching supported test modes by a given
>   network device's PHY interface
> --set-phy-test which allows entering one of the modes listed before and
>   pass an eventual set of test specific data
> 
> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>

has this series ever been posted for merging, i.e. not as RFC?
It looks quite useful to me and I probably will be able to test
the series if you still will be posting it.

> ---
>  ethtool.c | 115 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 115 insertions(+)
> 
> diff --git a/ethtool.c b/ethtool.c
> index 3289e0f6e8ec..f02cd3560197 100644
> --- a/ethtool.c
> +++ b/ethtool.c
> @@ -4854,6 +4854,118 @@ static int do_reset(struct cmd_context *ctx)
>         return 0;
>  }
>  
> +static int do_gphytest(struct cmd_context *ctx)
> +{
> +       struct ethtool_gstrings *strings;
> +       struct ethtool_phy_test test;
> +       unsigned int i;
> +       int max_len = 0, cur_len, rc;
> +
> +       if (ctx->argc != 0)
> +               exit_bad_args();
> +
> +       strings = get_stringset(ctx, ETH_SS_PHY_TESTS, 0, 1);
> +       if (!strings) {
> +               perror("Cannot get PHY tests strings");
> +               return 1;
> +       }
> +       if (strings->len == 0) {
> +               fprintf(stderr, "No PHY tests defined\n");
> +               rc = 1;
> +               goto err;
> +       }
> +
> +       /* Find longest string and align all strings accordingly */
> +       for (i = 0; i < strings->len; i++) {
> +               cur_len = strlen((const char*)strings->data +
> +                                i * ETH_GSTRING_LEN);
> +               if (cur_len > max_len)
> +                       max_len = cur_len;
> +       }
> +
> +       printf("PHY tests %s:\n", ctx->devname);
> +       for (i = 0; i < strings->len; i++) {
> +               memset(&test, 0, sizeof(test));
> +               test.cmd = ETHTOOL_GPHYTEST;
> +               test.mode = i;
> +
> +               rc = send_ioctl(ctx, &test);
> +               if (rc < 0)
> +                       continue;
> +
> +               fprintf(stdout, "     %.*s (Test data: %s)\n",
> +                      max_len,
> +                      (const char *)strings->data + i * ETH_GSTRING_LEN,
> +                      test.len ? "Yes" : "No");
> +       }
> +
> +       rc = 0;
> +
> +err:
> +       free(strings);
> +       return rc;
> +}
> +
> +static int do_sphytest(struct cmd_context *ctx)
> +{
> +       struct ethtool_gstrings *strings;
> +       struct ethtool_phy_test gtest;
> +       struct ethtool_phy_test *stest;
> +       unsigned int i;
> +       int rc;
> +
> +       if (ctx->argc < 1)
> +               exit_bad_args();
> +
> +       strings = get_stringset(ctx, ETH_SS_PHY_TESTS, 0, 1);
> +       if (!strings) {
> +               perror("Cannot get PHY test modes");
> +               return 1;
> +       }
> +
> +       if (strings->len == 0) {
> +               fprintf(stderr, "No PHY tests defined\n");
> +               rc = 1;
> +               goto err;
> +       }
> +
> +       for (i = 0; i < strings->len; i++) {
> +               if (!strcmp(ctx->argp[0],
> +                           (const char *)strings->data + i * ETH_GSTRING_LEN))
> +                       break;
> +       }
> +
> +       if (i == strings->len)
> +               exit_bad_args();
> +
> +       memset(&gtest, 0, sizeof(gtest));
> +       gtest.cmd = ETHTOOL_GPHYTEST;
> +       gtest.mode = i;
> +       rc = send_ioctl(ctx, &gtest);
> +       if (rc < 0) {
> +               rc = 1;
> +               goto err;
> +       }
> +
> +       stest = calloc(1, sizeof(*stest) + gtest.len);
> +       if (!stest) {
> +               perror("Unable to allocate memory");
> +               rc = 1;
> +               goto err;
> +       }
> +
> +       stest->cmd = ETHTOOL_SPHYTEST;
> +       stest->len = gtest.len;
> +       stest->mode = i;
> +
> +       rc = send_ioctl(ctx, stest);
> +       free(stest);
> +err:
> +       free(strings);
> +       return rc;
> +}
> +
> +
>  static int parse_named_bool(struct cmd_context *ctx, const char *name, u8 *on)
>  {
>         if (ctx->argc < 2)
> @@ -5223,6 +5335,9 @@ static const struct option {
>         { "--show-fec", 1, do_gfec, "Show FEC settings"},
>         { "--set-fec", 1, do_sfec, "Set FEC settings",
>           "             [ encoding auto|off|rs|baser ]\n"},
> +       { "--get-phy-tests", 1, do_gphytest,"Get PHY test mode(s)" },
> +       { "--set-phy-test", 1, do_sphytest, "Set PHY test mode",
> +         "             [ test options ]\n" },
>         { "-h|--help", 0, show_usage, "Show this help" },
>         { "--version", 0, do_version, "Show version number" },
>         {}

-- 
Alexander Sverdlin
Siemens AG
www.siemens.com

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