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Message-ID: <CACd6PL3aKJpRWKvkwsSQafPBmcT9S-TN=hHSfKSV2_+EjumH4w@mail.gmail.com>
Date: Mon, 13 Jun 2016 20:40:26 -0700
From: Vidya Chowdary <vidya.chowdary@...il.com>
To: David Decotigny <ddecotig@...il.com>
Cc: netdev@...r.kernel.org, Jeff Garzik <jgarzik@...ox.com>,
Ben Hutchings <ben@...adent.org.uk>,
David Miller <davem@...hat.com>,
Vidya Sagar Ravipati <vidya@...ulusnetworks.com>,
Joe Perches <joe@...ches.com>,
David Decotigny <decot@...glers.com>
Subject: Re: [ethtool PATCH v7 1/2] ethtool.c: add support for
ETHTOOL_xLINKSETTINGS ioctls
Acked-by:Vidya Sagar Ravipati <vidya@...ulusnetworks.com>
Validated this patch with various modules.
On Thu, Jun 9, 2016 at 5:55 PM, David Decotigny <ddecotig@...il.com> wrote:
> From: David Decotigny <decot@...glers.com>
>
> More info with kernel commit 8d3f2806f8fb ("Merge branch
> 'ethtool-ksettings'").
>
> Note: The new features implemented in this patch depend on kernel
> commit 793cf87de9d1 ("Set cmd field in ETHTOOL_GLINKSETTINGS response to
> wrong nwords").
>
>
> Signed-off-by: David Decotigny <decot@...glers.com>
> ---
> ethtool.c | 681 ++++++++++++++++++++++++++++++++++++++++++++-------------
> internal.h | 67 ++++++
> test-cmdline.c | 13 ++
> 3 files changed, 603 insertions(+), 158 deletions(-)
>
> diff --git a/ethtool.c b/ethtool.c
> index 0cd0d4f..cb3d971 100644
> --- a/ethtool.c
> +++ b/ethtool.c
> @@ -47,42 +47,6 @@
> #define MAX_ADDR_LEN 32
> #endif
>
> -#define ALL_ADVERTISED_MODES \
> - (ADVERTISED_10baseT_Half | \
> - ADVERTISED_10baseT_Full | \
> - ADVERTISED_100baseT_Half | \
> - ADVERTISED_100baseT_Full | \
> - ADVERTISED_1000baseT_Half | \
> - ADVERTISED_1000baseT_Full | \
> - ADVERTISED_1000baseKX_Full| \
> - ADVERTISED_2500baseX_Full | \
> - ADVERTISED_10000baseT_Full | \
> - ADVERTISED_10000baseKX4_Full | \
> - ADVERTISED_10000baseKR_Full | \
> - ADVERTISED_10000baseR_FEC | \
> - ADVERTISED_20000baseMLD2_Full | \
> - ADVERTISED_20000baseKR2_Full | \
> - ADVERTISED_40000baseKR4_Full | \
> - ADVERTISED_40000baseCR4_Full | \
> - ADVERTISED_40000baseSR4_Full | \
> - ADVERTISED_40000baseLR4_Full | \
> - ADVERTISED_56000baseKR4_Full | \
> - ADVERTISED_56000baseCR4_Full | \
> - ADVERTISED_56000baseSR4_Full | \
> - ADVERTISED_56000baseLR4_Full)
> -
> -#define ALL_ADVERTISED_FLAGS \
> - (ADVERTISED_Autoneg | \
> - ADVERTISED_TP | \
> - ADVERTISED_AUI | \
> - ADVERTISED_MII | \
> - ADVERTISED_FIBRE | \
> - ADVERTISED_BNC | \
> - ADVERTISED_Pause | \
> - ADVERTISED_Asym_Pause | \
> - ADVERTISED_Backplane | \
> - ALL_ADVERTISED_MODES)
> -
> #ifndef HAVE_NETIF_MSG
> enum {
> NETIF_MSG_DRV = 0x0001,
> @@ -293,6 +257,43 @@ static void get_mac_addr(char *src, unsigned char *dest)
> }
> }
>
> +static int parse_hex_u32_bitmap(const char *s,
> + unsigned int nbits, u32 *result)
> +{
> + const unsigned int nwords = __KERNEL_DIV_ROUND_UP(nbits, 32);
> + size_t slen = strlen(s);
> + size_t i;
> +
> + /* ignore optional '0x' prefix */
> + if ((slen > 2) && (strncasecmp(s, "0x", 2) == 0)) {
> + slen -= 2;
> + s += 2;
> + }
> +
> + if (slen > 8 * nwords) /* up to 2 digits per byte */
> + return -1;
> +
> + memset(result, 0, 4 * nwords);
> + for (i = 0 ; i < slen ; ++i) {
> + const unsigned int shift = (slen - 1 - i) * 4;
> + u32 *dest = &result[shift / 32];
> + u32 nibble;
> +
> + if ('a' <= s[i] && s[i] <= 'f')
> + nibble = 0xa + (s[i] - 'a');
> + else if ('A' <= s[i] && s[i] <= 'F')
> + nibble = 0xa + (s[i] - 'A');
> + else if ('0' <= s[i] && s[i] <= '9')
> + nibble = (s[i] - '0');
> + else
> + return -1;
> +
> + *dest |= (nibble << (shift % 32));
> + }
> +
> + return 0;
> +}
> +
> static void parse_generic_cmdline(struct cmd_context *ctx,
> int *changed,
> struct cmdline_info *info,
> @@ -472,64 +473,157 @@ static int do_version(struct cmd_context *ctx)
> return 0;
> }
>
> -static void dump_link_caps(const char *prefix, const char *an_prefix, u32 mask,
> - int link_mode_only);
> +/* link mode routines */
>
> -static void dump_supported(struct ethtool_cmd *ep)
> +static __ETHTOOL_DECLARE_LINK_MODE_MASK(all_advertised_modes);
> +static __ETHTOOL_DECLARE_LINK_MODE_MASK(all_advertised_flags);
> +
> +static void init_global_link_mode_masks(void)
> {
> - u32 mask = ep->supported;
> + static const enum ethtool_link_mode_bit_indices
> + all_advertised_modes_bits[] = {
> + ETHTOOL_LINK_MODE_10baseT_Half_BIT,
> + ETHTOOL_LINK_MODE_10baseT_Full_BIT,
> + ETHTOOL_LINK_MODE_100baseT_Half_BIT,
> + ETHTOOL_LINK_MODE_100baseT_Full_BIT,
> + ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
> + ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
> + ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
> + ETHTOOL_LINK_MODE_2500baseX_Full_BIT,
> + ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
> + ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
> + ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
> + ETHTOOL_LINK_MODE_10000baseR_FEC_BIT,
> + ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT,
> + ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT,
> + ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
> + ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
> + ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT,
> + ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT,
> + ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT,
> + ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT,
> + ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT,
> + ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT,
> + };
> + static const enum ethtool_link_mode_bit_indices
> + additional_advertised_flags_bits[] = {
> + ETHTOOL_LINK_MODE_Autoneg_BIT,
> + ETHTOOL_LINK_MODE_TP_BIT,
> + ETHTOOL_LINK_MODE_AUI_BIT,
> + ETHTOOL_LINK_MODE_MII_BIT,
> + ETHTOOL_LINK_MODE_FIBRE_BIT,
> + ETHTOOL_LINK_MODE_BNC_BIT,
> + ETHTOOL_LINK_MODE_Pause_BIT,
> + ETHTOOL_LINK_MODE_Asym_Pause_BIT,
> + ETHTOOL_LINK_MODE_Backplane_BIT,
> + };
> + unsigned int i;
>
> + ethtool_link_mode_zero(all_advertised_modes);
> + ethtool_link_mode_zero(all_advertised_flags);
> + for (i = 0 ; i < ARRAY_SIZE(all_advertised_modes_bits) ; ++i) {
> + ethtool_link_mode_set_bit(all_advertised_modes_bits[i],
> + all_advertised_modes);
> + ethtool_link_mode_set_bit(all_advertised_modes_bits[i],
> + all_advertised_flags);
> + }
> +
> + for (i = 0 ; i < ARRAY_SIZE(additional_advertised_flags_bits) ; ++i) {
> + ethtool_link_mode_set_bit(
> + additional_advertised_flags_bits[i],
> + all_advertised_flags);
> + }
> +}
> +
> +static void dump_link_caps(const char *prefix, const char *an_prefix,
> + const u32 *mask, int link_mode_only);
> +
> +static void dump_supported(const struct ethtool_link_usettings *link_usettings)
> +{
> fprintf(stdout, " Supported ports: [ ");
> - if (mask & SUPPORTED_TP)
> + if (ethtool_link_mode_test_bit(
> + ETHTOOL_LINK_MODE_TP_BIT,
> + link_usettings->link_modes.supported))
> fprintf(stdout, "TP ");
> - if (mask & SUPPORTED_AUI)
> + if (ethtool_link_mode_test_bit(
> + ETHTOOL_LINK_MODE_AUI_BIT,
> + link_usettings->link_modes.supported))
> fprintf(stdout, "AUI ");
> - if (mask & SUPPORTED_BNC)
> + if (ethtool_link_mode_test_bit(
> + ETHTOOL_LINK_MODE_BNC_BIT,
> + link_usettings->link_modes.supported))
> fprintf(stdout, "BNC ");
> - if (mask & SUPPORTED_MII)
> + if (ethtool_link_mode_test_bit(
> + ETHTOOL_LINK_MODE_MII_BIT,
> + link_usettings->link_modes.supported))
> fprintf(stdout, "MII ");
> - if (mask & SUPPORTED_FIBRE)
> + if (ethtool_link_mode_test_bit(
> + ETHTOOL_LINK_MODE_FIBRE_BIT,
> + link_usettings->link_modes.supported))
> fprintf(stdout, "FIBRE ");
> - if (mask & SUPPORTED_Backplane)
> + if (ethtool_link_mode_test_bit(
> + ETHTOOL_LINK_MODE_Backplane_BIT,
> + link_usettings->link_modes.supported))
> fprintf(stdout, "Backplane ");
> fprintf(stdout, "]\n");
>
> - dump_link_caps("Supported", "Supports", mask, 0);
> + dump_link_caps("Supported", "Supports",
> + link_usettings->link_modes.supported, 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,
> - int link_mode_only)
> +static void dump_link_caps(const char *prefix, const char *an_prefix,
> + const u32 *mask, int link_mode_only)
> {
> static const struct {
> int same_line; /* print on same line as previous */
> - u32 value;
> + unsigned int bit_index;
> const char *name;
> } mode_defs[] = {
> - { 0, ADVERTISED_10baseT_Half, "10baseT/Half" },
> - { 1, ADVERTISED_10baseT_Full, "10baseT/Full" },
> - { 0, ADVERTISED_100baseT_Half, "100baseT/Half" },
> - { 1, ADVERTISED_100baseT_Full, "100baseT/Full" },
> - { 0, ADVERTISED_1000baseT_Half, "1000baseT/Half" },
> - { 1, ADVERTISED_1000baseT_Full, "1000baseT/Full" },
> - { 0, ADVERTISED_1000baseKX_Full, "1000baseKX/Full" },
> - { 0, ADVERTISED_2500baseX_Full, "2500baseX/Full" },
> - { 0, ADVERTISED_10000baseT_Full, "10000baseT/Full" },
> - { 0, ADVERTISED_10000baseKX4_Full, "10000baseKX4/Full" },
> - { 0, ADVERTISED_10000baseKR_Full, "10000baseKR/Full" },
> - { 0, ADVERTISED_20000baseMLD2_Full, "20000baseMLD2/Full" },
> - { 0, ADVERTISED_20000baseKR2_Full, "20000baseKR2/Full" },
> - { 0, ADVERTISED_40000baseKR4_Full, "40000baseKR4/Full" },
> - { 0, ADVERTISED_40000baseCR4_Full, "40000baseCR4/Full" },
> - { 0, ADVERTISED_40000baseSR4_Full, "40000baseSR4/Full" },
> - { 0, ADVERTISED_40000baseLR4_Full, "40000baseLR4/Full" },
> - { 0, ADVERTISED_56000baseKR4_Full, "56000baseKR4/Full" },
> - { 0, ADVERTISED_56000baseCR4_Full, "56000baseCR4/Full" },
> - { 0, ADVERTISED_56000baseSR4_Full, "56000baseSR4/Full" },
> - { 0, ADVERTISED_56000baseLR4_Full, "56000baseLR4/Full" },
> + { 0, ETHTOOL_LINK_MODE_10baseT_Half_BIT,
> + "10baseT/Half" },
> + { 1, ETHTOOL_LINK_MODE_10baseT_Full_BIT,
> + "10baseT/Full" },
> + { 0, ETHTOOL_LINK_MODE_100baseT_Half_BIT,
> + "100baseT/Half" },
> + { 1, ETHTOOL_LINK_MODE_100baseT_Full_BIT,
> + "100baseT/Full" },
> + { 0, ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
> + "1000baseT/Half" },
> + { 1, ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
> + "1000baseT/Full" },
> + { 0, ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
> + "1000baseKX/Full" },
> + { 0, ETHTOOL_LINK_MODE_2500baseX_Full_BIT,
> + "2500baseX/Full" },
> + { 0, ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
> + "10000baseT/Full" },
> + { 0, ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
> + "10000baseKX4/Full" },
> + { 0, ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
> + "10000baseKR/Full" },
> + { 0, ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT,
> + "20000baseMLD2/Full" },
> + { 0, ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT,
> + "20000baseKR2/Full" },
> + { 0, ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
> + "40000baseKR4/Full" },
> + { 0, ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
> + "40000baseCR4/Full" },
> + { 0, ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT,
> + "40000baseSR4/Full" },
> + { 0, ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT,
> + "40000baseLR4/Full" },
> + { 0, ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT,
> + "56000baseKR4/Full" },
> + { 0, ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT,
> + "56000baseCR4/Full" },
> + { 0, ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT,
> + "56000baseSR4/Full" },
> + { 0, ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT,
> + "56000baseLR4/Full" },
> };
> int indent;
> int did1, new_line_pend, i;
> @@ -546,7 +640,8 @@ dump_link_caps(const char *prefix, const char *an_prefix, u32 mask,
> for (i = 0; i < ARRAY_SIZE(mode_defs); i++) {
> if (did1 && !mode_defs[i].same_line)
> new_line_pend = 1;
> - if (mask & mode_defs[i].value) {
> + if (ethtool_link_mode_test_bit(mode_defs[i].bit_index,
> + mask)) {
> if (new_line_pend) {
> fprintf(stdout, "\n");
> fprintf(stdout, " %*s", indent, "");
> @@ -562,46 +657,52 @@ dump_link_caps(const char *prefix, const char *an_prefix, u32 mask,
>
> if (!link_mode_only) {
> fprintf(stdout, " %s pause frame use: ", prefix);
> - if (mask & ADVERTISED_Pause) {
> + if (ethtool_link_mode_test_bit(
> + ETHTOOL_LINK_MODE_Pause_BIT, mask)) {
> fprintf(stdout, "Symmetric");
> - if (mask & ADVERTISED_Asym_Pause)
> + if (ethtool_link_mode_test_bit(
> + ETHTOOL_LINK_MODE_Asym_Pause_BIT, mask))
> fprintf(stdout, " Receive-only");
> fprintf(stdout, "\n");
> } else {
> - if (mask & ADVERTISED_Asym_Pause)
> + if (ethtool_link_mode_test_bit(
> + ETHTOOL_LINK_MODE_Asym_Pause_BIT, mask))
> fprintf(stdout, "Transmit-only\n");
> else
> fprintf(stdout, "No\n");
> }
>
> fprintf(stdout, " %s auto-negotiation: ", an_prefix);
> - if (mask & ADVERTISED_Autoneg)
> + if (ethtool_link_mode_test_bit(
> + ETHTOOL_LINK_MODE_Autoneg_BIT, mask))
> fprintf(stdout, "Yes\n");
> else
> fprintf(stdout, "No\n");
> }
> }
>
> -static int dump_ecmd(struct ethtool_cmd *ep)
> +static int
> +dump_link_usettings(const struct ethtool_link_usettings *link_usettings)
> {
> - u32 speed;
> -
> - dump_supported(ep);
> - dump_link_caps("Advertised", "Advertised", ep->advertising, 0);
> - if (ep->lp_advertising)
> + dump_supported(link_usettings);
> + dump_link_caps("Advertised", "Advertised",
> + link_usettings->link_modes.advertising, 0);
> + if (!ethtool_link_mode_is_empty(
> + link_usettings->link_modes.lp_advertising))
> dump_link_caps("Link partner advertised",
> - "Link partner advertised", ep->lp_advertising,
> - 0);
> + "Link partner advertised",
> + link_usettings->link_modes.lp_advertising, 0);
>
> fprintf(stdout, " Speed: ");
> - speed = ethtool_cmd_speed(ep);
> - if (speed == 0 || speed == (u16)(-1) || speed == (u32)(-1))
> + if (link_usettings->base.speed == 0
> + || link_usettings->base.speed == (u16)(-1)
> + || link_usettings->base.speed == (u32)(-1))
> fprintf(stdout, "Unknown!\n");
> else
> - fprintf(stdout, "%uMb/s\n", speed);
> + fprintf(stdout, "%uMb/s\n", link_usettings->base.speed);
>
> fprintf(stdout, " Duplex: ");
> - switch (ep->duplex) {
> + switch (link_usettings->base.duplex) {
> case DUPLEX_HALF:
> fprintf(stdout, "Half\n");
> break;
> @@ -609,12 +710,12 @@ static int dump_ecmd(struct ethtool_cmd *ep)
> fprintf(stdout, "Full\n");
> break;
> default:
> - fprintf(stdout, "Unknown! (%i)\n", ep->duplex);
> + fprintf(stdout, "Unknown! (%i)\n", link_usettings->base.duplex);
> break;
> };
>
> fprintf(stdout, " Port: ");
> - switch (ep->port) {
> + switch (link_usettings->base.port) {
> case PORT_TP:
> fprintf(stdout, "Twisted Pair\n");
> break;
> @@ -640,13 +741,13 @@ static int dump_ecmd(struct ethtool_cmd *ep)
> fprintf(stdout, "Other\n");
> break;
> default:
> - fprintf(stdout, "Unknown! (%i)\n", ep->port);
> + fprintf(stdout, "Unknown! (%i)\n", link_usettings->base.port);
> break;
> };
>
> - fprintf(stdout, " PHYAD: %d\n", ep->phy_address);
> + fprintf(stdout, " PHYAD: %d\n", link_usettings->base.phy_address);
> fprintf(stdout, " Transceiver: ");
> - switch (ep->transceiver) {
> + switch (link_usettings->deprecated.transceiver) {
> case XCVR_INTERNAL:
> fprintf(stdout, "internal\n");
> break;
> @@ -659,17 +760,18 @@ static int dump_ecmd(struct ethtool_cmd *ep)
> };
>
> fprintf(stdout, " Auto-negotiation: %s\n",
> - (ep->autoneg == AUTONEG_DISABLE) ?
> + (link_usettings->base.autoneg == AUTONEG_DISABLE) ?
> "off" : "on");
>
> - if (ep->port == PORT_TP) {
> + if (link_usettings->base.port == PORT_TP) {
> fprintf(stdout, " MDI-X: ");
> - if (ep->eth_tp_mdix_ctrl == ETH_TP_MDI) {
> + if (link_usettings->base.eth_tp_mdix_ctrl == ETH_TP_MDI) {
> fprintf(stdout, "off (forced)\n");
> - } else if (ep->eth_tp_mdix_ctrl == ETH_TP_MDI_X) {
> + } else if (link_usettings->base.eth_tp_mdix_ctrl
> + == ETH_TP_MDI_X) {
> fprintf(stdout, "on (forced)\n");
> } else {
> - switch (ep->eth_tp_mdix) {
> + switch (link_usettings->base.eth_tp_mdix) {
> case ETH_TP_MDI:
> fprintf(stdout, "off");
> break;
> @@ -680,7 +782,8 @@ static int dump_ecmd(struct ethtool_cmd *ep)
> fprintf(stdout, "Unknown");
> break;
> }
> - if (ep->eth_tp_mdix_ctrl == ETH_TP_MDI_AUTO)
> + if (link_usettings->base.eth_tp_mdix_ctrl
> + == ETH_TP_MDI_AUTO)
> fprintf(stdout, " (auto)");
> fprintf(stdout, "\n");
> }
> @@ -1368,6 +1471,7 @@ static int dump_rxfhash(int fhash, u64 val)
>
> static void dump_eeecmd(struct ethtool_eee *ep)
> {
> + __ETHTOOL_DECLARE_LINK_MODE_MASK(link_mode);
>
> fprintf(stdout, " EEE status: ");
> if (!ep->supported) {
> @@ -1389,9 +1493,16 @@ static void dump_eeecmd(struct ethtool_eee *ep)
> 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);
> + ethtool_link_mode_zero(link_mode);
> +
> + link_mode[0] = ep->supported;
> + dump_link_caps("Supported EEE", "", link_mode, 1);
> +
> + link_mode[0] = ep->advertised;
> + dump_link_caps("Advertised EEE", "", link_mode, 1);
> +
> + link_mode[0] = ep->lp_advertised;
> + dump_link_caps("Link partner advertised EEE", "", link_mode, 1);
> }
>
> #define N_SOTS 7
> @@ -2247,10 +2358,220 @@ static int do_sfeatures(struct cmd_context *ctx)
> return 0;
> }
>
> -static int do_gset(struct cmd_context *ctx)
> +static struct ethtool_link_usettings *
> +__do_ioctl_glinksettings(struct cmd_context *ctx)
> +{
> + int err;
> + struct {
> + struct ethtool_link_settings req;
> + __u32 link_mode_data[3*__ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32];
> + } ecmd;
> + struct ethtool_link_usettings *link_usettings;
> + unsigned int u32_offs;
> +
> + /* Handshake with kernel to determine number of words for link
> + * mode bitmaps. When requested number of bitmap words is not
> + * the one expected by kernel, the latter returns the integer
> + * opposite of what it is expecting. We request length 0 below
> + * (aka. invalid bitmap length) to get this info.
> + */
> + memset(&ecmd, 0, sizeof(ecmd));
> + ecmd.req.cmd = ETHTOOL_GLINKSETTINGS;
> + err = send_ioctl(ctx, &ecmd);
> + if (err < 0)
> + return NULL;
> +
> + /* see above: we expect a strictly negative value from kernel.
> + */
> + if (ecmd.req.link_mode_masks_nwords >= 0
> + || ecmd.req.cmd != ETHTOOL_GLINKSETTINGS)
> + return NULL;
> +
> + /* got the real ecmd.req.link_mode_masks_nwords,
> + * now send the real request
> + */
> + ecmd.req.cmd = ETHTOOL_GLINKSETTINGS;
> + ecmd.req.link_mode_masks_nwords = -ecmd.req.link_mode_masks_nwords;
> + err = send_ioctl(ctx, &ecmd);
> + if (err < 0)
> + return NULL;
> +
> + if (ecmd.req.link_mode_masks_nwords <= 0
> + || ecmd.req.cmd != ETHTOOL_GLINKSETTINGS)
> + return NULL;
> +
> + /* Convert to usettings struct */
> + link_usettings = calloc(1, sizeof(*link_usettings));
> + if (link_usettings == NULL)
> + return NULL;
> +
> + /* keep transceiver 0 */
> + memcpy(&link_usettings->base, &ecmd.req, sizeof(link_usettings->base));
> +
> + /* copy link mode bitmaps */
> + u32_offs = 0;
> + memcpy(link_usettings->link_modes.supported,
> + &ecmd.link_mode_data[u32_offs],
> + 4*ecmd.req.link_mode_masks_nwords);
> +
> + u32_offs += ecmd.req.link_mode_masks_nwords;
> + memcpy(link_usettings->link_modes.advertising,
> + &ecmd.link_mode_data[u32_offs],
> + 4*ecmd.req.link_mode_masks_nwords);
> +
> + u32_offs += ecmd.req.link_mode_masks_nwords;
> + memcpy(link_usettings->link_modes.lp_advertising,
> + &ecmd.link_mode_data[u32_offs],
> + 4*ecmd.req.link_mode_masks_nwords);
> +
> + return link_usettings;
> +}
> +
> +static int
> +__do_ioctl_slinksettings(struct cmd_context *ctx,
> + const struct ethtool_link_usettings *link_usettings)
> +{
> + struct {
> + struct ethtool_link_settings req;
> + __u32 link_mode_data[3*__ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32];
> + } ecmd;
> + unsigned int u32_offs;
> +
> + /* refuse to send ETHTOOL_SLINKSETTINGS ioctl if
> + * link_usettings was retrieved with ETHTOOL_GSET
> + */
> + if (link_usettings->base.cmd != ETHTOOL_GLINKSETTINGS)
> + return -1;
> +
> + /* refuse to send ETHTOOL_SLINKSETTINGS ioctl if deprecated fields
> + * were set
> + */
> + if (link_usettings->deprecated.transceiver)
> + return -1;
> +
> + if (link_usettings->base.link_mode_masks_nwords <= 0)
> + return -1;
> +
> + memcpy(&ecmd.req, &link_usettings->base, sizeof(ecmd.req));
> + ecmd.req.cmd = ETHTOOL_SLINKSETTINGS;
> +
> + /* copy link mode bitmaps */
> + u32_offs = 0;
> + memcpy(&ecmd.link_mode_data[u32_offs],
> + link_usettings->link_modes.supported,
> + 4*ecmd.req.link_mode_masks_nwords);
> +
> + u32_offs += ecmd.req.link_mode_masks_nwords;
> + memcpy(&ecmd.link_mode_data[u32_offs],
> + link_usettings->link_modes.advertising,
> + 4*ecmd.req.link_mode_masks_nwords);
> +
> + u32_offs += ecmd.req.link_mode_masks_nwords;
> + memcpy(&ecmd.link_mode_data[u32_offs],
> + link_usettings->link_modes.lp_advertising,
> + 4*ecmd.req.link_mode_masks_nwords);
> +
> + return send_ioctl(ctx, &ecmd);
> +}
> +
> +static struct ethtool_link_usettings *
> +__do_ioctl_gset(struct cmd_context *ctx)
> {
> int err;
> struct ethtool_cmd ecmd;
> + struct ethtool_link_usettings *link_usettings;
> +
> + memset(&ecmd, 0, sizeof(ecmd));
> + ecmd.cmd = ETHTOOL_GSET;
> + err = send_ioctl(ctx, &ecmd);
> + if (err < 0)
> + return NULL;
> +
> + link_usettings = calloc(1, sizeof(*link_usettings));
> + if (link_usettings == NULL)
> + return NULL;
> +
> + /* remember that ETHTOOL_GSET was used */
> + link_usettings->base.cmd = ETHTOOL_GSET;
> +
> + link_usettings->base.link_mode_masks_nwords = 1;
> + link_usettings->link_modes.supported[0] = ecmd.supported;
> + link_usettings->link_modes.advertising[0] = ecmd.advertising;
> + link_usettings->link_modes.lp_advertising[0] = ecmd.lp_advertising;
> + link_usettings->base.speed = ethtool_cmd_speed(&ecmd);
> + link_usettings->base.duplex = ecmd.duplex;
> + link_usettings->base.port = ecmd.port;
> + link_usettings->base.phy_address = ecmd.phy_address;
> + link_usettings->deprecated.transceiver = ecmd.transceiver;
> + link_usettings->base.autoneg = ecmd.autoneg;
> + link_usettings->base.mdio_support = ecmd.mdio_support;
> + /* ignored (fully deprecated): maxrxpkt, maxtxpkt */
> + link_usettings->base.eth_tp_mdix = ecmd.eth_tp_mdix;
> + link_usettings->base.eth_tp_mdix_ctrl = ecmd.eth_tp_mdix_ctrl;
> +
> + return link_usettings;
> +}
> +
> +static bool ethtool_link_mode_is_backward_compatible(const u32 *mask)
> +{
> + unsigned int i;
> +
> + for (i = 1 ; i < __ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32 ; ++i)
> + if (mask[i])
> + return false;
> +
> + return true;
> +}
> +
> +static int
> +__do_ioctl_sset(struct cmd_context *ctx,
> + const struct ethtool_link_usettings *link_usettings)
> +{
> + struct ethtool_cmd ecmd;
> +
> + /* refuse to send ETHTOOL_SSET ioctl if link_usettings was
> + * retrieved with ETHTOOL_GLINKSETTINGS
> + */
> + if (link_usettings->base.cmd != ETHTOOL_GSET)
> + return -1;
> +
> + if (link_usettings->base.link_mode_masks_nwords <= 0)
> + return -1;
> +
> + /* refuse to sset if any bit > 31 is set */
> + if (!ethtool_link_mode_is_backward_compatible(
> + link_usettings->link_modes.supported))
> + return -1;
> + if (!ethtool_link_mode_is_backward_compatible(
> + link_usettings->link_modes.advertising))
> + return -1;
> + if (!ethtool_link_mode_is_backward_compatible(
> + link_usettings->link_modes.lp_advertising))
> + return -1;
> +
> + memset(&ecmd, 0, sizeof(ecmd));
> + ecmd.cmd = ETHTOOL_SSET;
> +
> + ecmd.supported = link_usettings->link_modes.supported[0];
> + ecmd.advertising = link_usettings->link_modes.advertising[0];
> + ecmd.lp_advertising = link_usettings->link_modes.lp_advertising[0];
> + ethtool_cmd_speed_set(&ecmd, link_usettings->base.speed);
> + ecmd.duplex = link_usettings->base.duplex;
> + ecmd.port = link_usettings->base.port;
> + ecmd.phy_address = link_usettings->base.phy_address;
> + ecmd.transceiver = link_usettings->deprecated.transceiver;
> + ecmd.autoneg = link_usettings->base.autoneg;
> + ecmd.mdio_support = link_usettings->base.mdio_support;
> + /* ignored (fully deprecated): maxrxpkt, maxtxpkt */
> + ecmd.eth_tp_mdix = link_usettings->base.eth_tp_mdix;
> + ecmd.eth_tp_mdix_ctrl = link_usettings->base.eth_tp_mdix_ctrl;
> + return send_ioctl(ctx, &ecmd);
> +}
> +
> +static int do_gset(struct cmd_context *ctx)
> +{
> + int err;
> + struct ethtool_link_usettings *link_usettings;
> struct ethtool_wolinfo wolinfo;
> struct ethtool_value edata;
> int allfail = 1;
> @@ -2260,10 +2581,12 @@ static int do_gset(struct cmd_context *ctx)
>
> fprintf(stdout, "Settings for %s:\n", ctx->devname);
>
> - ecmd.cmd = ETHTOOL_GSET;
> - err = send_ioctl(ctx, &ecmd);
> - if (err == 0) {
> - err = dump_ecmd(&ecmd);
> + link_usettings = __do_ioctl_glinksettings(ctx);
> + if (link_usettings == NULL)
> + link_usettings = __do_ioctl_gset(ctx);
> + if (link_usettings != NULL) {
> + err = dump_link_usettings(link_usettings);
> + free(link_usettings);
> if (err)
> return err;
> allfail = 0;
> @@ -2322,8 +2645,10 @@ static int do_sset(struct cmd_context *ctx)
> int autoneg_wanted = -1;
> int phyad_wanted = -1;
> int xcvr_wanted = -1;
> - int full_advertising_wanted = -1;
> - int advertising_wanted = -1;
> + u32 *full_advertising_wanted = NULL;
> + u32 *advertising_wanted = NULL;
> + __ETHTOOL_DECLARE_LINK_MODE_MASK(_mask_full_advertising_wanted);
> + __ETHTOOL_DECLARE_LINK_MODE_MASK(_mask_advertising_wanted);
> int gset_changed = 0; /* did anything in GSET change? */
> u32 wol_wanted = 0;
> int wol_change = 0;
> @@ -2337,7 +2662,7 @@ static int do_sset(struct cmd_context *ctx)
> int argc = ctx->argc;
> char **argp = ctx->argp;
> int i;
> - int err;
> + int err = 0;
>
> for (i = 0; i < ARRAY_SIZE(flags_msglvl); i++)
> flag_to_cmdline_info(flags_msglvl[i].name,
> @@ -2411,7 +2736,12 @@ static int do_sset(struct cmd_context *ctx)
> i += 1;
> if (i >= argc)
> exit_bad_args();
> - full_advertising_wanted = get_int(argp[i], 16);
> + if (parse_hex_u32_bitmap(
> + argp[i],
> + __ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NBITS,
> + _mask_full_advertising_wanted))
> + exit_bad_args();
> + full_advertising_wanted = _mask_full_advertising_wanted;
> } else if (!strcmp(argp[i], "phyad")) {
> gset_changed = 1;
> i += 1;
> @@ -2468,75 +2798,89 @@ static int do_sset(struct cmd_context *ctx)
> }
> }
>
> - if (full_advertising_wanted < 0) {
> + if (full_advertising_wanted == NULL) {
> /* User didn't supply a full advertisement bitfield:
> * construct one from the specified speed and duplex.
> */
> + int adv_bit = -1;
> +
> if (speed_wanted == SPEED_10 && duplex_wanted == DUPLEX_HALF)
> - advertising_wanted = ADVERTISED_10baseT_Half;
> + adv_bit = ETHTOOL_LINK_MODE_10baseT_Half_BIT;
> else if (speed_wanted == SPEED_10 &&
> duplex_wanted == DUPLEX_FULL)
> - advertising_wanted = ADVERTISED_10baseT_Full;
> + adv_bit = ETHTOOL_LINK_MODE_10baseT_Full_BIT;
> else if (speed_wanted == SPEED_100 &&
> duplex_wanted == DUPLEX_HALF)
> - advertising_wanted = ADVERTISED_100baseT_Half;
> + adv_bit = ETHTOOL_LINK_MODE_100baseT_Half_BIT;
> else if (speed_wanted == SPEED_100 &&
> duplex_wanted == DUPLEX_FULL)
> - advertising_wanted = ADVERTISED_100baseT_Full;
> + adv_bit = ETHTOOL_LINK_MODE_100baseT_Full_BIT;
> else if (speed_wanted == SPEED_1000 &&
> duplex_wanted == DUPLEX_HALF)
> - advertising_wanted = ADVERTISED_1000baseT_Half;
> + adv_bit = ETHTOOL_LINK_MODE_1000baseT_Half_BIT;
> else if (speed_wanted == SPEED_1000 &&
> duplex_wanted == DUPLEX_FULL)
> - advertising_wanted = ADVERTISED_1000baseT_Full;
> + adv_bit = ETHTOOL_LINK_MODE_1000baseT_Full_BIT;
> else if (speed_wanted == SPEED_2500 &&
> duplex_wanted == DUPLEX_FULL)
> - advertising_wanted = ADVERTISED_2500baseX_Full;
> + adv_bit = ETHTOOL_LINK_MODE_2500baseX_Full_BIT;
> else if (speed_wanted == SPEED_10000 &&
> duplex_wanted == DUPLEX_FULL)
> - advertising_wanted = ADVERTISED_10000baseT_Full;
> - else
> - /* auto negotiate without forcing,
> - * all supported speed will be assigned below
> - */
> - advertising_wanted = 0;
> + adv_bit = ETHTOOL_LINK_MODE_10000baseT_Full_BIT;
> +
> + if (adv_bit >= 0) {
> + advertising_wanted = _mask_advertising_wanted;
> + ethtool_link_mode_zero(advertising_wanted);
> + ethtool_link_mode_set_bit(
> + adv_bit, advertising_wanted);
> + }
> + /* otherwise: auto negotiate without forcing,
> + * all supported speed will be assigned below
> + */
> }
>
> if (gset_changed) {
> - struct ethtool_cmd ecmd;
> + struct ethtool_link_usettings *link_usettings;
>
> - ecmd.cmd = ETHTOOL_GSET;
> - err = send_ioctl(ctx, &ecmd);
> - if (err < 0) {
> + link_usettings = __do_ioctl_glinksettings(ctx);
> + if (link_usettings == NULL)
> + link_usettings = __do_ioctl_gset(ctx);
> + if (link_usettings == NULL) {
> perror("Cannot get current device settings");
> + err = -1;
> } else {
> /* Change everything the user specified. */
> if (speed_wanted != -1)
> - ethtool_cmd_speed_set(&ecmd, speed_wanted);
> + link_usettings->base.speed = speed_wanted;
> if (duplex_wanted != -1)
> - ecmd.duplex = duplex_wanted;
> + link_usettings->base.duplex = duplex_wanted;
> if (port_wanted != -1)
> - ecmd.port = port_wanted;
> + link_usettings->base.port = port_wanted;
> if (mdix_wanted != -1) {
> /* check driver supports MDI-X */
> - if (ecmd.eth_tp_mdix_ctrl != ETH_TP_MDI_INVALID)
> - ecmd.eth_tp_mdix_ctrl = mdix_wanted;
> + if (link_usettings->base.eth_tp_mdix_ctrl
> + != ETH_TP_MDI_INVALID)
> + link_usettings->base.eth_tp_mdix_ctrl
> + = mdix_wanted;
> else
> - fprintf(stderr, "setting MDI not supported\n");
> + fprintf(stderr,
> + "setting MDI not supported\n");
> }
> if (autoneg_wanted != -1)
> - ecmd.autoneg = autoneg_wanted;
> + link_usettings->base.autoneg = autoneg_wanted;
> if (phyad_wanted != -1)
> - ecmd.phy_address = phyad_wanted;
> + link_usettings->base.phy_address = phyad_wanted;
> if (xcvr_wanted != -1)
> - ecmd.transceiver = xcvr_wanted;
> + link_usettings->deprecated.transceiver
> + = xcvr_wanted;
> /* XXX If the user specified speed or duplex
> * then we should mask the advertised modes
> * accordingly. For now, warn that we aren't
> * doing that.
> */
> if ((speed_wanted != -1 || duplex_wanted != -1) &&
> - ecmd.autoneg && advertising_wanted == 0) {
> + link_usettings->base.autoneg &&
> + advertising_wanted == NULL) {
> fprintf(stderr, "Cannot advertise");
> if (speed_wanted >= 0)
> fprintf(stderr, " speed %d",
> @@ -2548,37 +2892,56 @@ static int do_sset(struct cmd_context *ctx)
> fprintf(stderr, "\n");
> }
> if (autoneg_wanted == AUTONEG_ENABLE &&
> - advertising_wanted == 0) {
> + advertising_wanted == NULL) {
> + unsigned int i;
> +
> /* Auto negotiation enabled, but with
> * unspecified speed and duplex: enable all
> * supported speeds and duplexes.
> */
> - ecmd.advertising =
> - (ecmd.advertising &
> - ~ALL_ADVERTISED_MODES) |
> - (ALL_ADVERTISED_MODES & ecmd.supported);
> + ethtool_link_mode_for_each_u32(i) {
> + u32 sup = link_usettings->link_modes.supported[i];
> + u32 *adv = link_usettings->link_modes.advertising + i;
> +
> + *adv = ((*adv & ~all_advertised_modes[i])
> + | (sup & all_advertised_modes[i]));
> + }
>
> /* If driver supports unknown flags, we cannot
> * be sure that we enable all link modes.
> */
> - if ((ecmd.supported & ALL_ADVERTISED_FLAGS) !=
> - ecmd.supported) {
> - fprintf(stderr, "Driver supports one "
> - "or more unknown flags\n");
> + ethtool_link_mode_for_each_u32(i) {
> + u32 sup = link_usettings->link_modes.supported[i];
> +
> + if ((sup & all_advertised_flags[i]) != sup) {
> + fprintf(stderr, "Driver supports one or more unknown flags\n");
> + break;
> + }
> }
> - } else if (advertising_wanted > 0) {
> + } else if (advertising_wanted != NULL) {
> + unsigned int i;
> +
> /* Enable all requested modes */
> - ecmd.advertising =
> - (ecmd.advertising &
> - ~ALL_ADVERTISED_MODES) |
> - advertising_wanted;
> - } else if (full_advertising_wanted > 0) {
> - ecmd.advertising = full_advertising_wanted;
> + ethtool_link_mode_for_each_u32(i) {
> + u32 *adv = link_usettings->link_modes.advertising + i;
> +
> + *adv = ((*adv & ~all_advertised_modes[i])
> + | advertising_wanted[i]);
> + }
> + } else if (full_advertising_wanted != NULL) {
> + ethtool_link_mode_copy(
> + link_usettings->link_modes.advertising,
> + full_advertising_wanted);
> }
>
> /* Try to perform the update. */
> - ecmd.cmd = ETHTOOL_SSET;
> - err = send_ioctl(ctx, &ecmd);
> + if (link_usettings->base.cmd == ETHTOOL_GLINKSETTINGS)
> + err = __do_ioctl_slinksettings(ctx,
> + link_usettings);
> + else
> + err = __do_ioctl_sset(ctx,
> + link_usettings);
> + free(link_usettings);
> if (err < 0)
> perror("Cannot set new settings");
> }
> @@ -4230,6 +4593,8 @@ int main(int argc, char **argp)
> struct cmd_context ctx;
> int k;
>
> + init_global_link_mode_masks();
> +
> /* Skip command name */
> argp++;
> argc--;
> diff --git a/internal.h b/internal.h
> index e98f532..5e78b5c 100644
> --- a/internal.h
> +++ b/internal.h
> @@ -12,6 +12,7 @@
> #ifdef HAVE_CONFIG_H
> #include "ethtool-config.h"
> #endif
> +#include <stdbool.h>
> #include <stdio.h>
> #include <stdint.h>
> #include <stdlib.h>
> @@ -122,6 +123,72 @@ static inline int test_bit(unsigned int nr, const unsigned long *addr)
> ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE | \
> ETH_FLAG_RXHASH)
>
> +/* internal API for link mode bitmap interaction with kernel. */
> +
> +#define __ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32 \
> + (SCHAR_MAX)
> +#define __ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NBITS \
> + (32*__ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32)
> +#define __ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NBYTES \
> + (4*__ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32)
> +#define __ETHTOOL_DECLARE_LINK_MODE_MASK(name) \
> + u32 name[__ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32]
> +
> +struct ethtool_link_usettings {
> + struct {
> + __u8 transceiver;
> + } deprecated;
> + struct ethtool_link_settings base;
> + struct {
> + __ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
> + __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
> + __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
> + } link_modes;
> +};
> +
> +#define ethtool_link_mode_for_each_u32(index) \
> + for ((index) = 0 ; \
> + (index) < __ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32 ; \
> + ++(index))
> +
> +static inline void ethtool_link_mode_zero(u32 *dst)
> +{
> + memset(dst, 0, __ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NBYTES);
> +}
> +
> +static inline bool ethtool_link_mode_is_empty(const u32 *mask)
> +{
> + unsigned int i;
> +
> + ethtool_link_mode_for_each_u32(i)
> + {
> + if (mask[i] != 0)
> + return false;
> + }
> +
> + return true;
> +}
> +
> +static inline void ethtool_link_mode_copy(u32 *dst, const u32 *src)
> +{
> + memcpy(dst, src, __ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NBYTES);
> +}
> +
> +static inline int ethtool_link_mode_test_bit(unsigned int nr, const u32 *mask)
> +{
> + if (nr >= __ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NBITS)
> + return !!0;
> + return !!(mask[nr / 32] & (1 << (nr % 32)));
> +}
> +
> +static inline int ethtool_link_mode_set_bit(unsigned int nr, u32 *mask)
> +{
> + if (nr >= __ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NBITS)
> + return -1;
> + mask[nr / 32] |= (1 << (nr % 32));
> + return 0;
> +}
> +
> /* Context for sub-commands */
> struct cmd_context {
> const char *devname; /* net device name */
> diff --git a/test-cmdline.c b/test-cmdline.c
> index 2fd7cbb..a94edea 100644
> --- a/test-cmdline.c
> +++ b/test-cmdline.c
> @@ -37,7 +37,20 @@ static struct test_case {
> { 1, "--change devname autoneg foo" },
> { 1, "-s devname autoneg" },
> { 0, "--change devname advertise 0x1" },
> + { 0, "--change devname advertise 0xf" },
> + { 0, "--change devname advertise 0Xf" },
> + { 0, "--change devname advertise 1" },
> + { 0, "--change devname advertise f" },
> + { 0, "--change devname advertise 01" },
> + { 0, "--change devname advertise 0f" },
> + { 0, "--change devname advertise 0xfffffffffffffffffffffffffffffffff" },
> + { 0, "--change devname advertise fffffffffffffffffffffffffffffffff" },
> + { 0, "--change devname advertise 0x0000fffffffffffffffffffffffffffff" },
> + { 0, "--change devname advertise 0000fffffffffffffffffffffffffffff" },
> + { 1, "-s devname advertise" },
> + { 1, "-s devname advertise 0x" },
> { 1, "-s devname advertise foo" },
> + { 1, "-s devname advertise 0xfoo" },
> { 1, "--change devname advertise" },
> { 0, "-s devname phyad 1" },
> { 1, "--change devname phyad foo" },
> --
> 2.8.0.rc3.226.g39d4020
>
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