Re: [PATCH 2/5] net: MOXA ART: connect to PHY and add ethtool support
On Fri, 2013-11-22 at 15:57 +0100, Jonas Jensen wrote: > The kernel now has a MDIO bus driver and a phy_driver (RTL8201CP), > connect to this PHY using OF and add ethtool support. > > Signed-off-by: Jonas Jensen > --- > > Notes: > Applies to next-20131122 > > drivers/net/ethernet/moxa/moxart_ether.c | 179 > ++- > drivers/net/ethernet/moxa/moxart_ether.h | 1 + > 2 files changed, 179 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/moxa/moxart_ether.c > b/drivers/net/ethernet/moxa/moxart_ether.c > index 3c14afd..bcc6005 100644 > --- a/drivers/net/ethernet/moxa/moxart_ether.c > +++ b/drivers/net/ethernet/moxa/moxart_ether.c > @@ -26,9 +26,15 @@ > #include > #include > #include > +#include > +#include > > #include "moxart_ether.h" > > +#define DRV_NAME"moxart-ethernet" > +#define DRV_VERSION "0.2" > +#define MOXART_NUM_STATS16 MOXART_NUM_STATS should be defined as ARRAY_SIZE(ethtool_stats_keys). [...] > +static void moxart_get_drvinfo(struct net_device *ndev, > +struct ethtool_drvinfo *info) > +{ > + strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); > + strlcpy(info->version, DRV_VERSION, sizeof(info->version)); > + strlcpy(info->bus_info, dev_name(>dev), sizeof(info->bus_info)); > + info->n_stats = MOXART_NUM_STATS; [...] Don't initialise n_stats here; the core will initialise it using your get_sset_count implementation. Ben. -- Ben Hutchings, Staff Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 2/5] net: MOXA ART: connect to PHY and add ethtool support
Hello Jonas, > + if (!priv->phy_dev) > + return -ENODEV; This should not be required since you will fail probing the interface if you cannot connect to the PHY device. > + > + return phy_ethtool_gset(priv->phy_dev, cmd); > +} > + > +static int moxart_set_settings(struct net_device *ndev, struct ethtool_cmd > *cmd) > +{ > + struct moxart_mac_priv_t *priv = netdev_priv(ndev); > + > + if (!priv->phy_dev) > + return -ENODEV; Same here > + > + return phy_ethtool_sset(priv->phy_dev, cmd); > +} > + > +static int moxart_nway_reset(struct net_device *ndev) > +{ > + struct moxart_mac_priv_t *priv = netdev_priv(ndev); > + > + if (!priv->phy_dev) > + return -EINVAL; And here [snip] > + if (!priv->phy_dev) > + return -ENODEV; And here > + > + return phy_mii_ioctl(priv->phy_dev, ir, cmd); > +} > + > static void moxart_mac_free_memory(struct net_device *ndev) > { > struct moxart_mac_priv_t *priv = netdev_priv(ndev); > @@ -169,6 +314,10 @@ static int moxart_mac_open(struct net_device *ndev) > moxart_update_mac_address(ndev); > moxart_mac_setup_desc_ring(ndev); > moxart_mac_enable(ndev); > + > + if (priv->phy_dev) > + phy_start(priv->phy_dev); > + > netif_start_queue(ndev); > > netdev_dbg(ndev, "%s: IMR=0x%x, MACCR=0x%x\n", > @@ -184,6 +333,9 @@ static int moxart_mac_stop(struct net_device *ndev) > > napi_disable(>napi); > > + if (priv->phy_dev) > + phy_stop(priv->phy_dev); > + > netif_stop_queue(ndev); > > /* disable all interrupts */ > @@ -429,12 +581,22 @@ static struct net_device_ops moxart_netdev_ops = { > .ndo_set_mac_address= moxart_set_mac_address, > .ndo_validate_addr = eth_validate_addr, > .ndo_change_mtu = eth_change_mtu, > + .ndo_do_ioctl = moxart_do_ioctl, > }; > > +static void moxart_adjust_link(struct net_device *ndev) > +{ > +#ifdef DEBUG > + struct moxart_mac_priv_t *priv = netdev_priv(ndev); > + > + phy_print_status(priv->phy_dev); > +#endif This is too simplistic, you should at least do the following: - check for an update in the PHY duplex setting and update the Ethernet MAC with this new setting - check for an update in the PHY speed settings and update relevant MAC registers (RX/TX clock speed, PHY speed etc...) Also, it is a good practice to retain the previous link state/duplex/speed, compare them against the phydev values and call phy_print_status() if there is any change. > +} > + > static int moxart_mac_probe(struct platform_device *pdev) > { > struct device *p_dev = >dev; > - struct device_node *node = p_dev->of_node; > + struct device_node *node = p_dev->of_node, *phy_node; > struct net_device *ndev; > struct moxart_mac_priv_t *priv; > struct resource *res; > @@ -455,6 +617,20 @@ static int moxart_mac_probe(struct platform_device *pdev) > priv = netdev_priv(ndev); > priv->ndev = ndev; > > + phy_node = of_parse_phandle(node, "phy-handle", 0); > + if (!phy_node) > + dev_err(p_dev, "of_parse_phandle failed\n"); > + > + if (phy_node) { > + priv->phy_dev = of_phy_connect(priv->ndev, phy_node, > + _adjust_link, > + 0, PHY_INTERFACE_MODE_MII); Unless the hardware supports anything but MII, this is fine. A nicer binding would include a "phy-mode" or "phy-connection-type" property which describes how the Ethernet MAC and PHY are connected to each other. You can then retrieve that property using of_get_phy_mode(). -- Florian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 2/5] net: MOXA ART: connect to PHY and add ethtool support
2013/11/22 Jonas Jensen : > On 22 November 2013 15:57, Jonas Jensen wrote: >> drivers/net/ethernet/moxa/moxart_ether.c | 179 >> ++- >> drivers/net/ethernet/moxa/moxart_ether.h | 1 + >> 2 files changed, 179 insertions(+), 1 deletion(-) > > I see now I forgot to include the devicetree binding document. > > I'll wait for comments. You are doing two things in your patch, so that means two separate patches. -- Florian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 2/5] net: MOXA ART: connect to PHY and add ethtool support
On 22 November 2013 15:57, Jonas Jensen wrote: > drivers/net/ethernet/moxa/moxart_ether.c | 179 > ++- > drivers/net/ethernet/moxa/moxart_ether.h | 1 + > 2 files changed, 179 insertions(+), 1 deletion(-) I see now I forgot to include the devicetree binding document. I'll wait for comments. Thanks, Jonas -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 2/5] net: MOXA ART: connect to PHY and add ethtool support
The kernel now has a MDIO bus driver and a phy_driver (RTL8201CP), connect to this PHY using OF and add ethtool support. Signed-off-by: Jonas Jensen --- Notes: Applies to next-20131122 drivers/net/ethernet/moxa/moxart_ether.c | 179 ++- drivers/net/ethernet/moxa/moxart_ether.h | 1 + 2 files changed, 179 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c index 3c14afd..bcc6005 100644 --- a/drivers/net/ethernet/moxa/moxart_ether.c +++ b/drivers/net/ethernet/moxa/moxart_ether.c @@ -26,9 +26,15 @@ #include #include #include +#include +#include #include "moxart_ether.h" +#define DRV_NAME"moxart-ethernet" +#define DRV_VERSION "0.2" +#define MOXART_NUM_STATS16 + static inline void moxart_emac_write(struct net_device *ndev, unsigned int reg, unsigned long value) { @@ -61,6 +67,145 @@ static int moxart_set_mac_address(struct net_device *ndev, void *addr) return 0; } +static struct { + const char str[ETH_GSTRING_LEN]; +} ethtool_stats_keys[] = { + { "tx_ok_mcol_2to15" }, + { "tx_ok_1col" }, + { "rx_frame_pause" }, + { "frame_align_err" }, + { "err_col_late_16" }, + { "err_col_16" }, + { "rx_runt" }, + { "late_col" }, + { "crc_err" }, + { "rx_ftl" }, + { "rx_fifo_full" }, + { "rx_col" }, + { "rx_bcast" }, + { "rx_mcast" }, + { "rx_ok" }, + { "tx_ok" }, +}; + +static void moxart_get_drvinfo(struct net_device *ndev, + struct ethtool_drvinfo *info) +{ + strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); + strlcpy(info->version, DRV_VERSION, sizeof(info->version)); + strlcpy(info->bus_info, dev_name(>dev), sizeof(info->bus_info)); + info->n_stats = MOXART_NUM_STATS; +} + +static int moxart_get_settings(struct net_device *ndev, struct ethtool_cmd *cmd) +{ + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + + if (!priv->phy_dev) + return -ENODEV; + + return phy_ethtool_gset(priv->phy_dev, cmd); +} + +static int moxart_set_settings(struct net_device *ndev, struct ethtool_cmd *cmd) +{ + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + + if (!priv->phy_dev) + return -ENODEV; + + return phy_ethtool_sset(priv->phy_dev, cmd); +} + +static int moxart_nway_reset(struct net_device *ndev) +{ + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + + if (!priv->phy_dev) + return -EINVAL; + + return genphy_restart_aneg(priv->phy_dev); +} + +static void moxart_get_ethtool_stats(struct net_device *ndev, +struct ethtool_stats *estats, +u64 *tmp_stats) +{ + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + u32 s; + int i = 0; + + s = readl(priv->base + REG_TX_COL_COUNTER); + tmp_stats[i++] = s & 0x; + tmp_stats[i++] = s & 0x; + s = readl(priv->base + REG_RPF_AEP_COUNTER); + tmp_stats[i++] = s & 0x; + tmp_stats[i++] = s & 0x; + s = readl(priv->base + REG_XM_PG_COUNTER); + tmp_stats[i++] = s & 0x; + tmp_stats[i++] = s & 0x; + s = readl(priv->base + REG_RUNT_TLC_COUNTER); + tmp_stats[i++] = s & 0x; + tmp_stats[i++] = s & 0x; + s = readl(priv->base + REG_CRC_FTL_COUNTER); + tmp_stats[i++] = s & 0x; + tmp_stats[i++] = s & 0x; + s = readl(priv->base + REG_RLC_RCC_COUNTER); + tmp_stats[i++] = s & 0x; + tmp_stats[i++] = s & 0x; + tmp_stats[i++] = readl(priv->base + REG_BROC_COUNTER); + tmp_stats[i++] = readl(priv->base + REG_MULCA_COUNTER); + tmp_stats[i++] = readl(priv->base + REG_XP_COUNTER); + tmp_stats[i++] = readl(priv->base + REG_RP_COUNTER); +} + +static int moxart_get_sset_count(struct net_device *netdev, + int string_set) +{ + switch (string_set) { + case ETH_SS_STATS: + return MOXART_NUM_STATS; + default: + return -EINVAL; + } +} + +static void moxart_get_strings(struct net_device *dev, u32 stringset, u8 *data) +{ + switch (stringset) { + case ETH_SS_STATS: + memcpy(data, _stats_keys, sizeof(ethtool_stats_keys)); + break; + default: + WARN_ON(1); + break; + } +} + +static const struct ethtool_ops moxart_ethtool_ops = { + .set_settings = moxart_set_settings, + .get_settings = moxart_get_settings, + .get_drvinfo= moxart_get_drvinfo, + .nway_reset = moxart_nway_reset, + .get_link =
[PATCH 2/5] net: MOXA ART: connect to PHY and add ethtool support
The kernel now has a MDIO bus driver and a phy_driver (RTL8201CP), connect to this PHY using OF and add ethtool support. Signed-off-by: Jonas Jensen jonas.jen...@gmail.com --- Notes: Applies to next-20131122 drivers/net/ethernet/moxa/moxart_ether.c | 179 ++- drivers/net/ethernet/moxa/moxart_ether.h | 1 + 2 files changed, 179 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c index 3c14afd..bcc6005 100644 --- a/drivers/net/ethernet/moxa/moxart_ether.c +++ b/drivers/net/ethernet/moxa/moxart_ether.c @@ -26,9 +26,15 @@ #include linux/of_irq.h #include linux/crc32.h #include linux/crc32c.h +#include linux/phy.h +#include linux/of_mdio.h #include moxart_ether.h +#define DRV_NAMEmoxart-ethernet +#define DRV_VERSION 0.2 +#define MOXART_NUM_STATS16 + static inline void moxart_emac_write(struct net_device *ndev, unsigned int reg, unsigned long value) { @@ -61,6 +67,145 @@ static int moxart_set_mac_address(struct net_device *ndev, void *addr) return 0; } +static struct { + const char str[ETH_GSTRING_LEN]; +} ethtool_stats_keys[] = { + { tx_ok_mcol_2to15 }, + { tx_ok_1col }, + { rx_frame_pause }, + { frame_align_err }, + { err_col_late_16 }, + { err_col_16 }, + { rx_runt }, + { late_col }, + { crc_err }, + { rx_ftl }, + { rx_fifo_full }, + { rx_col }, + { rx_bcast }, + { rx_mcast }, + { rx_ok }, + { tx_ok }, +}; + +static void moxart_get_drvinfo(struct net_device *ndev, + struct ethtool_drvinfo *info) +{ + strlcpy(info-driver, DRV_NAME, sizeof(info-driver)); + strlcpy(info-version, DRV_VERSION, sizeof(info-version)); + strlcpy(info-bus_info, dev_name(ndev-dev), sizeof(info-bus_info)); + info-n_stats = MOXART_NUM_STATS; +} + +static int moxart_get_settings(struct net_device *ndev, struct ethtool_cmd *cmd) +{ + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + + if (!priv-phy_dev) + return -ENODEV; + + return phy_ethtool_gset(priv-phy_dev, cmd); +} + +static int moxart_set_settings(struct net_device *ndev, struct ethtool_cmd *cmd) +{ + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + + if (!priv-phy_dev) + return -ENODEV; + + return phy_ethtool_sset(priv-phy_dev, cmd); +} + +static int moxart_nway_reset(struct net_device *ndev) +{ + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + + if (!priv-phy_dev) + return -EINVAL; + + return genphy_restart_aneg(priv-phy_dev); +} + +static void moxart_get_ethtool_stats(struct net_device *ndev, +struct ethtool_stats *estats, +u64 *tmp_stats) +{ + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + u32 s; + int i = 0; + + s = readl(priv-base + REG_TX_COL_COUNTER); + tmp_stats[i++] = s 0x; + tmp_stats[i++] = s 0x; + s = readl(priv-base + REG_RPF_AEP_COUNTER); + tmp_stats[i++] = s 0x; + tmp_stats[i++] = s 0x; + s = readl(priv-base + REG_XM_PG_COUNTER); + tmp_stats[i++] = s 0x; + tmp_stats[i++] = s 0x; + s = readl(priv-base + REG_RUNT_TLC_COUNTER); + tmp_stats[i++] = s 0x; + tmp_stats[i++] = s 0x; + s = readl(priv-base + REG_CRC_FTL_COUNTER); + tmp_stats[i++] = s 0x; + tmp_stats[i++] = s 0x; + s = readl(priv-base + REG_RLC_RCC_COUNTER); + tmp_stats[i++] = s 0x; + tmp_stats[i++] = s 0x; + tmp_stats[i++] = readl(priv-base + REG_BROC_COUNTER); + tmp_stats[i++] = readl(priv-base + REG_MULCA_COUNTER); + tmp_stats[i++] = readl(priv-base + REG_XP_COUNTER); + tmp_stats[i++] = readl(priv-base + REG_RP_COUNTER); +} + +static int moxart_get_sset_count(struct net_device *netdev, + int string_set) +{ + switch (string_set) { + case ETH_SS_STATS: + return MOXART_NUM_STATS; + default: + return -EINVAL; + } +} + +static void moxart_get_strings(struct net_device *dev, u32 stringset, u8 *data) +{ + switch (stringset) { + case ETH_SS_STATS: + memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys)); + break; + default: + WARN_ON(1); + break; + } +} + +static const struct ethtool_ops moxart_ethtool_ops = { + .set_settings = moxart_set_settings, + .get_settings = moxart_get_settings, + .get_drvinfo= moxart_get_drvinfo, + .nway_reset = moxart_nway_reset, + .get_link
Re: [PATCH 2/5] net: MOXA ART: connect to PHY and add ethtool support
On 22 November 2013 15:57, Jonas Jensen jonas.jen...@gmail.com wrote: drivers/net/ethernet/moxa/moxart_ether.c | 179 ++- drivers/net/ethernet/moxa/moxart_ether.h | 1 + 2 files changed, 179 insertions(+), 1 deletion(-) I see now I forgot to include the devicetree binding document. I'll wait for comments. Thanks, Jonas -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 2/5] net: MOXA ART: connect to PHY and add ethtool support
2013/11/22 Jonas Jensen jonas.jen...@gmail.com: On 22 November 2013 15:57, Jonas Jensen jonas.jen...@gmail.com wrote: drivers/net/ethernet/moxa/moxart_ether.c | 179 ++- drivers/net/ethernet/moxa/moxart_ether.h | 1 + 2 files changed, 179 insertions(+), 1 deletion(-) I see now I forgot to include the devicetree binding document. I'll wait for comments. You are doing two things in your patch, so that means two separate patches. -- Florian -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 2/5] net: MOXA ART: connect to PHY and add ethtool support
Hello Jonas, + if (!priv-phy_dev) + return -ENODEV; This should not be required since you will fail probing the interface if you cannot connect to the PHY device. + + return phy_ethtool_gset(priv-phy_dev, cmd); +} + +static int moxart_set_settings(struct net_device *ndev, struct ethtool_cmd *cmd) +{ + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + + if (!priv-phy_dev) + return -ENODEV; Same here + + return phy_ethtool_sset(priv-phy_dev, cmd); +} + +static int moxart_nway_reset(struct net_device *ndev) +{ + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + + if (!priv-phy_dev) + return -EINVAL; And here [snip] + if (!priv-phy_dev) + return -ENODEV; And here + + return phy_mii_ioctl(priv-phy_dev, ir, cmd); +} + static void moxart_mac_free_memory(struct net_device *ndev) { struct moxart_mac_priv_t *priv = netdev_priv(ndev); @@ -169,6 +314,10 @@ static int moxart_mac_open(struct net_device *ndev) moxart_update_mac_address(ndev); moxart_mac_setup_desc_ring(ndev); moxart_mac_enable(ndev); + + if (priv-phy_dev) + phy_start(priv-phy_dev); + netif_start_queue(ndev); netdev_dbg(ndev, %s: IMR=0x%x, MACCR=0x%x\n, @@ -184,6 +333,9 @@ static int moxart_mac_stop(struct net_device *ndev) napi_disable(priv-napi); + if (priv-phy_dev) + phy_stop(priv-phy_dev); + netif_stop_queue(ndev); /* disable all interrupts */ @@ -429,12 +581,22 @@ static struct net_device_ops moxart_netdev_ops = { .ndo_set_mac_address= moxart_set_mac_address, .ndo_validate_addr = eth_validate_addr, .ndo_change_mtu = eth_change_mtu, + .ndo_do_ioctl = moxart_do_ioctl, }; +static void moxart_adjust_link(struct net_device *ndev) +{ +#ifdef DEBUG + struct moxart_mac_priv_t *priv = netdev_priv(ndev); + + phy_print_status(priv-phy_dev); +#endif This is too simplistic, you should at least do the following: - check for an update in the PHY duplex setting and update the Ethernet MAC with this new setting - check for an update in the PHY speed settings and update relevant MAC registers (RX/TX clock speed, PHY speed etc...) Also, it is a good practice to retain the previous link state/duplex/speed, compare them against the phydev values and call phy_print_status() if there is any change. +} + static int moxart_mac_probe(struct platform_device *pdev) { struct device *p_dev = pdev-dev; - struct device_node *node = p_dev-of_node; + struct device_node *node = p_dev-of_node, *phy_node; struct net_device *ndev; struct moxart_mac_priv_t *priv; struct resource *res; @@ -455,6 +617,20 @@ static int moxart_mac_probe(struct platform_device *pdev) priv = netdev_priv(ndev); priv-ndev = ndev; + phy_node = of_parse_phandle(node, phy-handle, 0); + if (!phy_node) + dev_err(p_dev, of_parse_phandle failed\n); + + if (phy_node) { + priv-phy_dev = of_phy_connect(priv-ndev, phy_node, + moxart_adjust_link, + 0, PHY_INTERFACE_MODE_MII); Unless the hardware supports anything but MII, this is fine. A nicer binding would include a phy-mode or phy-connection-type property which describes how the Ethernet MAC and PHY are connected to each other. You can then retrieve that property using of_get_phy_mode(). -- Florian -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 2/5] net: MOXA ART: connect to PHY and add ethtool support
On Fri, 2013-11-22 at 15:57 +0100, Jonas Jensen wrote: The kernel now has a MDIO bus driver and a phy_driver (RTL8201CP), connect to this PHY using OF and add ethtool support. Signed-off-by: Jonas Jensen jonas.jen...@gmail.com --- Notes: Applies to next-20131122 drivers/net/ethernet/moxa/moxart_ether.c | 179 ++- drivers/net/ethernet/moxa/moxart_ether.h | 1 + 2 files changed, 179 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c index 3c14afd..bcc6005 100644 --- a/drivers/net/ethernet/moxa/moxart_ether.c +++ b/drivers/net/ethernet/moxa/moxart_ether.c @@ -26,9 +26,15 @@ #include linux/of_irq.h #include linux/crc32.h #include linux/crc32c.h +#include linux/phy.h +#include linux/of_mdio.h #include moxart_ether.h +#define DRV_NAMEmoxart-ethernet +#define DRV_VERSION 0.2 +#define MOXART_NUM_STATS16 MOXART_NUM_STATS should be defined as ARRAY_SIZE(ethtool_stats_keys). [...] +static void moxart_get_drvinfo(struct net_device *ndev, +struct ethtool_drvinfo *info) +{ + strlcpy(info-driver, DRV_NAME, sizeof(info-driver)); + strlcpy(info-version, DRV_VERSION, sizeof(info-version)); + strlcpy(info-bus_info, dev_name(ndev-dev), sizeof(info-bus_info)); + info-n_stats = MOXART_NUM_STATS; [...] Don't initialise n_stats here; the core will initialise it using your get_sset_count implementation. Ben. -- Ben Hutchings, Staff Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked. -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/