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Date: Tue, 12 Jun 2012 14:48:53 +0200
From: Giuseppe CAVALLARO <peppe.cavallaro@...com>
To: Yuval Mintz <yuvalmin@...adcom.com>
Cc: bhutchings@...arflare.com, netdev@...r.kernel.org,
eilong@...adcom.com
Subject: Re: [PATCH 1/1 v3] Ethtool: Add EEE support
Hello Yuval.
On 6/10/2012 10:48 AM, Yuval Mintz wrote:
> This patch adds 2 new ethtool commands which can be
> used to manipulate network interfaces' support in
> EEE.
>
> Output of 'get' has the following form:
>
> EEE Settings for p2p1:
> EEE status: enabled - active
> Tx LPI: 1000 (us)
> Supported EEE link modes: 10000baseT/Full
> Advertised EEE link modes: 10000baseT/Full
> Link partner advertised EEE link modes: 10000baseT/Full
>
> Thanks goes to Giuseppe Cavallaro for his original patch.
>
> Signed-off-by: Yuval Mintz <yuvalmin@...adcom.com>
> Signed-off-by: Eilon Greenstein <eilong@...adcom.com>
I've tested it with the stmmac on STB SH4 platform and it seems to be ok
on my side.
peppe
> ---
> Changes from Version 2:
> - Changed --get-eee into --show-eee
> - Corrected EEE tests in test-cmdline.c
> - Corrected documentation
> ---
> ethtool.8.in | 32 +++++++++++++
> ethtool.c | 136 +++++++++++++++++++++++++++++++++++++++++++++++--------
> test-cmdline.c | 11 +++++
> 3 files changed, 159 insertions(+), 20 deletions(-)
>
> diff --git a/ethtool.8.in b/ethtool.8.in
> index 70ae31d..178322b 100644
> --- a/ethtool.8.in
> +++ b/ethtool.8.in
> @@ -325,6 +325,16 @@ ethtool \- query or control network driver and hardware settings
> .I devname flag
> .A1 on off
> .RB ...
> +.HP
> +.B ethtool \-\-show\-eee
> +.I devname
> +.HP
> +.B ethtool \-\-set\-eee
> +.I devname
> +.B2 eee on off
> +.B2 tx-lpi on off
> +.BN tx-timer
> +.BN advertise
> .
> .\" Adjust lines (i.e. full justification) and hyphenate.
> .ad
> @@ -810,6 +820,28 @@ Sets the device's private flags as specified.
> .I flag
> .A1 on off
> Sets the state of the named private flag.
> +.TP
> +.B \-\-show\-eee
> +Queries the specified network device for its support of Efficient Energy
> +Ethernet (according to the IEEE 802.3az specifications)
> +.TP
> +.B \-\-set\-eee
> +Sets the device EEE behaviour.
> +.TP
> +.A2 eee on off
> +Enables/disables the device support of EEE.
> +.TP
> +.A2 tx-lpi on off
> +Determines whether the device should assert its Tx LPI.
> +.TP
> +.BI advertise \ N
> +Sets the speeds for which the device should advertise EEE capabiliities.
> +Values are as for
> +.B \-\-change advertise
> +.TP
> +.BI tx-timer \ N
> +Sets the amount of time the device should stay in idle mode prior to asserting
> +its Tx LPI (in microseconds). This has meaning only when Tx LPI is enabled.
> .SH BUGS
> Not supported (in part or whole) on all network drivers.
> .SH AUTHOR
> diff --git a/ethtool.c b/ethtool.c
> index f09a032..73e0e28 100644
> --- a/ethtool.c
> +++ b/ethtool.c
> @@ -416,7 +416,8 @@ static int do_version(struct cmd_context *ctx)
> return 0;
> }
>
> -static void dump_link_caps(const char *prefix, const char *an_prefix, u32 mask);
> +static void dump_link_caps(const char *prefix, const char *an_prefix, u32 mask,
> + int link_mode_only);
>
> static void dump_supported(struct ethtool_cmd *ep)
> {
> @@ -435,14 +436,15 @@ static void dump_supported(struct ethtool_cmd *ep)
> fprintf(stdout, "FIBRE ");
> fprintf(stdout, "]\n");
>
> - dump_link_caps("Supported", "Supports", mask);
> + dump_link_caps("Supported", "Supports", mask, 0);
> }
>
> /* Print link capability flags (supported, advertised or lp_advertised).
> * Assumes that the corresponding SUPPORTED and ADVERTISED flags are equal.
> */
> static void
> -dump_link_caps(const char *prefix, const char *an_prefix, u32 mask)
> +dump_link_caps(const char *prefix, const char *an_prefix, u32 mask,
> + int link_mode_only)
> {
> int indent;
> int did1;
> @@ -527,24 +529,26 @@ dump_link_caps(const char *prefix, const char *an_prefix, u32 mask)
> fprintf(stdout, "Not reported");
> fprintf(stdout, "\n");
>
> - fprintf(stdout, " %s pause frame use: ", prefix);
> - if (mask & ADVERTISED_Pause) {
> - fprintf(stdout, "Symmetric");
> - if (mask & ADVERTISED_Asym_Pause)
> - fprintf(stdout, " Receive-only");
> - fprintf(stdout, "\n");
> - } else {
> - if (mask & ADVERTISED_Asym_Pause)
> - fprintf(stdout, "Transmit-only\n");
> + if (!link_mode_only) {
> + fprintf(stdout, " %s pause frame use: ", prefix);
> + if (mask & ADVERTISED_Pause) {
> + fprintf(stdout, "Symmetric");
> + if (mask & ADVERTISED_Asym_Pause)
> + fprintf(stdout, " Receive-only");
> + fprintf(stdout, "\n");
> + } else {
> + if (mask & ADVERTISED_Asym_Pause)
> + fprintf(stdout, "Transmit-only\n");
> + else
> + fprintf(stdout, "No\n");
> + }
> +
> + fprintf(stdout, " %s auto-negotiation: ", an_prefix);
> + if (mask & ADVERTISED_Autoneg)
> + fprintf(stdout, "Yes\n");
> else
> fprintf(stdout, "No\n");
> }
> -
> - fprintf(stdout, " %s auto-negotiation: ", an_prefix);
> - if (mask & ADVERTISED_Autoneg)
> - fprintf(stdout, "Yes\n");
> - else
> - fprintf(stdout, "No\n");
> }
>
> static int dump_ecmd(struct ethtool_cmd *ep)
> @@ -552,10 +556,11 @@ static int dump_ecmd(struct ethtool_cmd *ep)
> u32 speed;
>
> dump_supported(ep);
> - dump_link_caps("Advertised", "Advertised", ep->advertising);
> + dump_link_caps("Advertised", "Advertised", ep->advertising, 0);
> if (ep->lp_advertising)
> dump_link_caps("Link partner advertised",
> - "Link partner advertised", ep->lp_advertising);
> + "Link partner advertised", ep->lp_advertising,
> + 0);
>
> fprintf(stdout, " Speed: ");
> speed = ethtool_cmd_speed(ep);
> @@ -1234,6 +1239,34 @@ static int dump_rxfhash(int fhash, u64 val)
> return 0;
> }
>
> +static void dump_eeecmd(struct ethtool_eee *ep)
> +{
> +
> + fprintf(stdout, " EEE status: ");
> + if (!ep->supported) {
> + fprintf(stdout, "not supported\n");
> + return;
> + } else if (!ep->eee_enabled) {
> + fprintf(stdout, "disabled\n");
> + } else {
> + fprintf(stdout, "enabled - ");
> + if (ep->eee_active)
> + fprintf(stdout, "active\n");
> + else
> + fprintf(stdout, "inactive\n");
> + }
> +
> + fprintf(stdout, " Tx LPI:");
> + if (ep->tx_lpi_enabled)
> + fprintf(stdout, " %d (us)\n", ep->tx_lpi_timer);
> + else
> + fprintf(stdout, " disabled\n");
> +
> + dump_link_caps("Supported EEE", "", ep->supported, 1);
> + dump_link_caps("Advertised EEE", "", ep->advertised, 1);
> + dump_link_caps("Link partner advertised EEE", "", ep->lp_advertised, 1);
> +}
> +
> #define N_SOTS 7
>
> static char *so_timestamping_labels[N_SOTS] = {
> @@ -3463,6 +3496,63 @@ static int do_getmodule(struct cmd_context *ctx)
> return 0;
> }
>
> +static int do_geee(struct cmd_context *ctx)
> +{
> + struct ethtool_eee eeecmd;
> +
> + if (ctx->argc != 0)
> + exit_bad_args();
> +
> + eeecmd.cmd = ETHTOOL_GEEE;
> + if (send_ioctl(ctx, &eeecmd)) {
> + perror("Cannot get EEE settings");
> + return 1;
> + }
> +
> + fprintf(stdout, "EEE Settings for %s:\n", ctx->devname);
> + dump_eeecmd(&eeecmd);
> +
> + return 0;
> +}
> +
> +static int do_seee(struct cmd_context *ctx)
> +{
> + int adv_c = -1, lpi_c = -1, lpi_time_c = -1, eee_c = -1;
> + int change = -1, change2 = -1;
> + struct ethtool_eee eeecmd;
> + struct cmdline_info cmdline_eee[] = {
> + { "advertise", CMDL_U32, &adv_c, &eeecmd.advertised },
> + { "tx-lpi", CMDL_BOOL, &lpi_c, &eeecmd.tx_lpi_enabled },
> + { "tx-timer", CMDL_U32, &lpi_time_c, &eeecmd.tx_lpi_timer},
> + { "eee", CMDL_BOOL, &eee_c, &eeecmd.eee_enabled},
> + };
> +
> + if (ctx->argc == 0)
> + exit_bad_args();
> +
> + parse_generic_cmdline(ctx, &change, cmdline_eee,
> + ARRAY_SIZE(cmdline_eee));
> +
> + eeecmd.cmd = ETHTOOL_GEEE;
> + if (send_ioctl(ctx, &eeecmd)) {
> + perror("Cannot get EEE settings");
> + return 1;
> + }
> +
> + do_generic_set(cmdline_eee, ARRAY_SIZE(cmdline_eee), &change2);
> +
> + if (change2) {
> +
> + eeecmd.cmd = ETHTOOL_SEEE;
> + if (send_ioctl(ctx, &eeecmd)) {
> + perror("Cannot set EEE settings");
> + return 1;
> + }
> + }
> +
> + return 0;
> +}
> +
> #ifndef TEST_ETHTOOL
> int send_ioctl(struct cmd_context *ctx, void *cmd)
> {
> @@ -3611,6 +3701,12 @@ static const struct option {
> " [ hex on|off ]\n"
> " [ offset N ]\n"
> " [ length N ]\n" },
> + { "--show-eee", 1, do_geee, "Show EEE settings"},
> + { "--set-eee", 1, do_seee, "Set EEE settings",
> + " [ eee on|off ]\n"
> + " [ advertise %x ]\n"
> + " [ tx-lpi on|off ]\n"
> + " [ tx-timer %d ]\n"},
> { "-h|--help", 0, show_usage, "Show this help" },
> { "--version", 0, do_version, "Show version number" },
> {}
> diff --git a/test-cmdline.c b/test-cmdline.c
> index 978c312..8fc2b48 100644
> --- a/test-cmdline.c
> +++ b/test-cmdline.c
> @@ -217,6 +217,17 @@ static struct test_case {
> { 0, "-m devname hex off" },
> { 1, "-m devname hex on raw on" },
> { 0, "-m devname offset 4 length 6" },
> + { 1, "--show-eee" },
> + { 0, "--show-eee devname" },
> + { 1, "--show-eee devname foo" },
> + { 1, "--set-eee" },
> + { 1, "--set-eee devname" },
> + { 0, "--set-eee devname eee on" },
> + { 0, "--set-eee devname eee off" },
> + { 0, "--set-eee devname tx-lpi on" },
> + { 0, "--set-eee devname tx-lpi off" },
> + { 1, "--set-eee devname tx-timer foo" },
> + { 1, "--set-eee devname advertise foo" },
> /* can't test --set-priv-flags yet */
> { 0, "-h" },
> { 0, "--help" },
>
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