1 files changed, 214 insertions, 288 deletions

diff --git a/drivers/net/cassini.c b/drivers/net/cassini.c
index 45831fb377a0..2e617424d3fb 100644
--- a/drivers/net/cassini.c
+++ b/drivers/net/cassini.c
@@ -4423,18 +4423,14 @@ static struct {
 #define CAS_REG_LEN     (sizeof(ethtool_register_table)/sizeof(int))
 #define CAS_MAX_REGS    (sizeof (u32)*CAS_REG_LEN)
 
-static u8 *cas_get_regs(struct cas *cp)
+static void cas_read_regs(struct cas *cp, u8 *ptr, int len)
 {
-        u8 *ptr = kmalloc(CAS_MAX_REGS, GFP_KERNEL);
         u8 *p;
         int i;
         unsigned long flags;
 
-        if (!ptr)
-                return NULL;
-
         spin_lock_irqsave(&cp->lock, flags);
-        for (i = 0, p = ptr; i < CAS_REG_LEN ; i ++, p += sizeof(u32)) {
+        for (i = 0, p = ptr; i < len ; i ++, p += sizeof(u32)) {
                 u16 hval;
                 u32 val;
                 if (ethtool_register_table[i].offsets < 0) {
@@ -4447,8 +4443,6 @@ static u8 *cas_get_regs(struct cas *cp)
                 memcpy(p, (u8 *)&val, sizeof(u32));
         }
         spin_unlock_irqrestore(&cp->lock, flags);
-
-        return ptr;
 }
 
 static struct net_device_stats *cas_get_stats(struct net_device *dev)
@@ -4561,316 +4555,251 @@ static void cas_set_multicast(struct net_device *dev)
         spin_unlock_irqrestore(&cp->lock, flags);
 }
 
-/* Eventually add support for changing the advertisement
- * on autoneg.
- */
-static int cas_ethtool_ioctl(struct net_device *dev, void __user *ep_user)
+static void cas_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+        struct cas *cp = netdev_priv(dev);
+        strncpy(info->driver, DRV_MODULE_NAME, ETHTOOL_BUSINFO_LEN);
+        strncpy(info->version, DRV_MODULE_VERSION, ETHTOOL_BUSINFO_LEN);
+        info->fw_version[0] = '\0';
+        strncpy(info->bus_info, pci_name(cp->pdev), ETHTOOL_BUSINFO_LEN);
+        info->regdump_len = cp->casreg_len < CAS_MAX_REGS ?
+                cp->casreg_len : CAS_MAX_REGS;
+        info->n_stats = CAS_NUM_STAT_KEYS;
+}
+
+static int cas_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 {
         struct cas *cp = netdev_priv(dev);
         u16 bmcr;
         int full_duplex, speed, pause;
-        struct ethtool_cmd ecmd;
         unsigned long flags;
         enum link_state linkstate = link_up;
 
-        if (copy_from_user(&ecmd, ep_user, sizeof(ecmd)))
-                return -EFAULT;
-                
-        switch(ecmd.cmd) {
-        case ETHTOOL_GDRVINFO: {
-                struct ethtool_drvinfo info = { .cmd = ETHTOOL_GDRVINFO };
-
-                strncpy(info.driver, DRV_MODULE_NAME,
-                        ETHTOOL_BUSINFO_LEN);
-                strncpy(info.version, DRV_MODULE_VERSION,
-                        ETHTOOL_BUSINFO_LEN);
-                info.fw_version[0] = '\0';
-                strncpy(info.bus_info, pci_name(cp->pdev),
-                        ETHTOOL_BUSINFO_LEN);
-                info.regdump_len = cp->casreg_len < CAS_MAX_REGS ?
-                        cp->casreg_len : CAS_MAX_REGS;
-                info.n_stats = CAS_NUM_STAT_KEYS;
-                if (copy_to_user(ep_user, &info, sizeof(info)))
-                        return -EFAULT;
-
-                return 0;
+        cmd->advertising = 0;
+        cmd->supported = SUPPORTED_Autoneg;
+        if (cp->cas_flags & CAS_FLAG_1000MB_CAP) {
+                cmd->supported |= SUPPORTED_1000baseT_Full;
+                cmd->advertising |= ADVERTISED_1000baseT_Full;
         }
 
-        case ETHTOOL_GSET:
-                ecmd.advertising = 0;
-                ecmd.supported = SUPPORTED_Autoneg;
-                if (cp->cas_flags & CAS_FLAG_1000MB_CAP) {
-                        ecmd.supported |= SUPPORTED_1000baseT_Full;
-                        ecmd.advertising |= ADVERTISED_1000baseT_Full;
+        /* Record PHY settings if HW is on. */
+        spin_lock_irqsave(&cp->lock, flags);
+        bmcr = 0;
+        linkstate = cp->lstate;
+        if (CAS_PHY_MII(cp->phy_type)) {
+                cmd->port = PORT_MII;
+                cmd->transceiver = (cp->cas_flags & CAS_FLAG_SATURN) ?
+                        XCVR_INTERNAL : XCVR_EXTERNAL;
+                cmd->phy_address = cp->phy_addr;
+                cmd->advertising |= ADVERTISED_TP | ADVERTISED_MII |
+                        ADVERTISED_10baseT_Half | 
+                        ADVERTISED_10baseT_Full | 
+                        ADVERTISED_100baseT_Half | 
+                        ADVERTISED_100baseT_Full;
+
+                cmd->supported |=
+                        (SUPPORTED_10baseT_Half | 
+                         SUPPORTED_10baseT_Full |
+                         SUPPORTED_100baseT_Half | 
+                         SUPPORTED_100baseT_Full |
+                         SUPPORTED_TP | SUPPORTED_MII);
+
+                if (cp->hw_running) {
+                        cas_mif_poll(cp, 0);
+                        bmcr = cas_phy_read(cp, MII_BMCR);
+                        cas_read_mii_link_mode(cp, &full_duplex, 
+                                               &speed, &pause);
+                        cas_mif_poll(cp, 1);
                 }
 
-                /* Record PHY settings if HW is on. */
-                spin_lock_irqsave(&cp->lock, flags);
-                bmcr = 0;
-                linkstate = cp->lstate;
-                if (CAS_PHY_MII(cp->phy_type)) {
-                        ecmd.port = PORT_MII;
-                        ecmd.transceiver = (cp->cas_flags & CAS_FLAG_SATURN) ?
-                                XCVR_INTERNAL : XCVR_EXTERNAL;
-                        ecmd.phy_address = cp->phy_addr;
-                        ecmd.advertising |= ADVERTISED_TP | ADVERTISED_MII |
-                                ADVERTISED_10baseT_Half | 
-                                ADVERTISED_10baseT_Full | 
-                                ADVERTISED_100baseT_Half | 
-                                ADVERTISED_100baseT_Full;
-
-                        ecmd.supported |=
-                                (SUPPORTED_10baseT_Half | 
-                                 SUPPORTED_10baseT_Full |
-                                 SUPPORTED_100baseT_Half | 
-                                 SUPPORTED_100baseT_Full |
-                                 SUPPORTED_TP | SUPPORTED_MII);
-
-                        if (cp->hw_running) {
-                                cas_mif_poll(cp, 0);
-                                bmcr = cas_phy_read(cp, MII_BMCR);
-                                cas_read_mii_link_mode(cp, &full_duplex, 
-                                                       &speed, &pause);
-                                cas_mif_poll(cp, 1);
-                        }
-
-                } else {
-                        ecmd.port = PORT_FIBRE;
-                        ecmd.transceiver = XCVR_INTERNAL;
-                        ecmd.phy_address = 0;
-                        ecmd.supported   |= SUPPORTED_FIBRE;
-                        ecmd.advertising |= ADVERTISED_FIBRE;
-
-                        if (cp->hw_running) {
-                                /* pcs uses the same bits as mii */ 
-                                bmcr = readl(cp->regs + REG_PCS_MII_CTRL);
-                                cas_read_pcs_link_mode(cp, &full_duplex, 
-                                                       &speed, &pause);
-                        }
+        } else {
+                cmd->port = PORT_FIBRE;
+                cmd->transceiver = XCVR_INTERNAL;
+                cmd->phy_address = 0;
+                cmd->supported   |= SUPPORTED_FIBRE;
+                cmd->advertising |= ADVERTISED_FIBRE;
+
+                if (cp->hw_running) {
+                        /* pcs uses the same bits as mii */ 
+                        bmcr = readl(cp->regs + REG_PCS_MII_CTRL);
+                        cas_read_pcs_link_mode(cp, &full_duplex, 
+                                               &speed, &pause);
                 }
-                spin_unlock_irqrestore(&cp->lock, flags);
+        }
+        spin_unlock_irqrestore(&cp->lock, flags);
 
-                if (bmcr & BMCR_ANENABLE) {
-                        ecmd.advertising |= ADVERTISED_Autoneg;
-                        ecmd.autoneg = AUTONEG_ENABLE;
-                        ecmd.speed = ((speed == 10) ?
-                                      SPEED_10 :
-                                      ((speed == 1000) ?
-                                       SPEED_1000 : SPEED_100));
-                        ecmd.duplex = full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
+        if (bmcr & BMCR_ANENABLE) {
+                cmd->advertising |= ADVERTISED_Autoneg;
+                cmd->autoneg = AUTONEG_ENABLE;
+                cmd->speed = ((speed == 10) ?
+                              SPEED_10 :
+                              ((speed == 1000) ?
+                               SPEED_1000 : SPEED_100));
+                cmd->duplex = full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
+        } else {
+                cmd->autoneg = AUTONEG_DISABLE;
+                cmd->speed =
+                        (bmcr & CAS_BMCR_SPEED1000) ?
+                        SPEED_1000 : 
+                        ((bmcr & BMCR_SPEED100) ? SPEED_100: 
+                         SPEED_10);
+                cmd->duplex =
+                        (bmcr & BMCR_FULLDPLX) ?
+                        DUPLEX_FULL : DUPLEX_HALF;
+        }
+        if (linkstate != link_up) {
+                /* Force these to "unknown" if the link is not up and
+                 * autonogotiation in enabled. We can set the link 
+                 * speed to 0, but not cmd->duplex,
+                 * because its legal values are 0 and 1.  Ethtool will
+                 * print the value reported in parentheses after the
+                 * word "Unknown" for unrecognized values.
+                 *
+                 * If in forced mode, we report the speed and duplex
+                 * settings that we configured.
+                 */
+                if (cp->link_cntl & BMCR_ANENABLE) {
+                        cmd->speed = 0;
+                        cmd->duplex = 0xff;
                 } else {
-                        ecmd.autoneg = AUTONEG_DISABLE;
-                        ecmd.speed =
-                                (bmcr & CAS_BMCR_SPEED1000) ?
-                                SPEED_1000 : 
-                                ((bmcr & BMCR_SPEED100) ? SPEED_100: 
-                                 SPEED_10);
-                        ecmd.duplex =
-                                (bmcr & BMCR_FULLDPLX) ?
-                                DUPLEX_FULL : DUPLEX_HALF;
-                }
-                if (linkstate != link_up) {
-                        /* Force these to "unknown" if the link is not up and
-                         * autonogotiation in enabled. We can set the link 
-                         * speed to 0, but not ecmd.duplex,
-                         * because its legal values are 0 and 1.  Ethtool will
-                         * print the value reported in parentheses after the
-                         * word "Unknown" for unrecognized values.
-                         *
-                         * If in forced mode, we report the speed and duplex
-                         * settings that we configured.
-                         */
-                        if (cp->link_cntl & BMCR_ANENABLE) {
-                                ecmd.speed = 0;
-                                ecmd.duplex = 0xff;
-                        } else {
-                                ecmd.speed = SPEED_10;
-                                if (cp->link_cntl & BMCR_SPEED100) {
-                                        ecmd.speed = SPEED_100;
-                                } else if (cp->link_cntl & CAS_BMCR_SPEED1000) {
-                                        ecmd.speed = SPEED_1000;
-                                }
-                                ecmd.duplex = (cp->link_cntl & BMCR_FULLDPLX)?
-                                        DUPLEX_FULL : DUPLEX_HALF;
+                        cmd->speed = SPEED_10;
+                        if (cp->link_cntl & BMCR_SPEED100) {
+                                cmd->speed = SPEED_100;
+                        } else if (cp->link_cntl & CAS_BMCR_SPEED1000) {
+                                cmd->speed = SPEED_1000;
                         }
+                        cmd->duplex = (cp->link_cntl & BMCR_FULLDPLX)?
+                                DUPLEX_FULL : DUPLEX_HALF;
                 }
-                if (copy_to_user(ep_user, &ecmd, sizeof(ecmd)))
-                        return -EFAULT;
-                return 0;
+        }
+        return 0;
+}
 
-        case ETHTOOL_SSET:
-                if (!capable(CAP_NET_ADMIN))
-                        return -EPERM;
+static int cas_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+        struct cas *cp = netdev_priv(dev);
+        unsigned long flags;
 
-                /* Verify the settings we care about. */
-                if (ecmd.autoneg != AUTONEG_ENABLE &&
-                    ecmd.autoneg != AUTONEG_DISABLE)
-                        return -EINVAL;
+        /* Verify the settings we care about. */
+        if (cmd->autoneg != AUTONEG_ENABLE &&
+            cmd->autoneg != AUTONEG_DISABLE)
+                return -EINVAL;
 
-                if (ecmd.autoneg == AUTONEG_DISABLE &&
-                    ((ecmd.speed != SPEED_1000 &&
-                      ecmd.speed != SPEED_100 &&
-                      ecmd.speed != SPEED_10) ||
-                     (ecmd.duplex != DUPLEX_HALF &&
-                      ecmd.duplex != DUPLEX_FULL)))
-                        return -EINVAL;
+        if (cmd->autoneg == AUTONEG_DISABLE &&
+            ((cmd->speed != SPEED_1000 &&
+              cmd->speed != SPEED_100 &&
+              cmd->speed != SPEED_10) ||
+             (cmd->duplex != DUPLEX_HALF &&
+              cmd->duplex != DUPLEX_FULL)))
+                return -EINVAL;
 
-                /* Apply settings and restart link process. */
-                spin_lock_irqsave(&cp->lock, flags);
-                cas_begin_auto_negotiation(cp, &ecmd);
-                spin_unlock_irqrestore(&cp->lock, flags);
-                return 0;
+        /* Apply settings and restart link process. */
+        spin_lock_irqsave(&cp->lock, flags);
+        cas_begin_auto_negotiation(cp, cmd);
+        spin_unlock_irqrestore(&cp->lock, flags);
+        return 0;
+}
 
-        case ETHTOOL_NWAY_RST:
-                if ((cp->link_cntl & BMCR_ANENABLE) == 0)
-                        return -EINVAL;
+static int cas_nway_reset(struct net_device *dev)
+{
+        struct cas *cp = netdev_priv(dev);
+        unsigned long flags;
 
-                /* Restart link process. */
-                spin_lock_irqsave(&cp->lock, flags);
-                cas_begin_auto_negotiation(cp, NULL);
-                spin_unlock_irqrestore(&cp->lock, flags);
+        if ((cp->link_cntl & BMCR_ANENABLE) == 0)
+                return -EINVAL;
 
-                return 0;
+        /* Restart link process. */
+        spin_lock_irqsave(&cp->lock, flags);
+        cas_begin_auto_negotiation(cp, NULL);
+        spin_unlock_irqrestore(&cp->lock, flags);
 
-        case ETHTOOL_GWOL:
-        case ETHTOOL_SWOL:
-                break; /* doesn't exist */
+        return 0;
+}
 
-        /* get link status */
-        case ETHTOOL_GLINK: {
-                struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
+static u32 cas_get_link(struct net_device *dev)
+{
+        struct cas *cp = netdev_priv(dev);
+        return cp->lstate == link_up;
+}
 
-                edata.data = (cp->lstate == link_up);
-                if (copy_to_user(ep_user, &edata, sizeof(edata)))
-                        return -EFAULT;
-                return 0;
-        }
+static u32 cas_get_msglevel(struct net_device *dev)
+{
+        struct cas *cp = netdev_priv(dev);
+        return cp->msg_enable;
+}
 
-        /* get message-level */
-        case ETHTOOL_GMSGLVL: {
-                struct ethtool_value edata = { .cmd = ETHTOOL_GMSGLVL };
+static void cas_set_msglevel(struct net_device *dev, u32 value)
+{
+        struct cas *cp = netdev_priv(dev);
+        cp->msg_enable = value;
+}
 
-                edata.data = cp->msg_enable;
-                if (copy_to_user(ep_user, &edata, sizeof(edata)))
-                        return -EFAULT;
-                return 0;
-        }
+static int cas_get_regs_len(struct net_device *dev)
+{
+        struct cas *cp = netdev_priv(dev);
+        return cp->casreg_len < CAS_MAX_REGS ? cp->casreg_len: CAS_MAX_REGS;
+}
 
-        /* set message-level */
-        case ETHTOOL_SMSGLVL: {
-                struct ethtool_value edata;
+static void cas_get_regs(struct net_device *dev, struct ethtool_regs *regs,
+                             void *p)
+{
+        struct cas *cp = netdev_priv(dev);
+        regs->version = 0;
+        /* cas_read_regs handles locks (cp->lock).  */
+        cas_read_regs(cp, p, regs->len / sizeof(u32));
+}
 
-                if (!capable(CAP_NET_ADMIN)) {
-                        return (-EPERM);
-                }
-                if (copy_from_user(&edata, ep_user, sizeof(edata)))
-                        return -EFAULT;
-                cp->msg_enable = edata.data;
-                return 0;
-        }
+static int cas_get_stats_count(struct net_device *dev)
+{
+        return CAS_NUM_STAT_KEYS;
+}
 
-        case ETHTOOL_GREGS: {
-                struct ethtool_regs edata;
-                u8 *ptr;
-                int len = cp->casreg_len < CAS_MAX_REGS ?
-                        cp->casreg_len: CAS_MAX_REGS;
-
-                if (copy_from_user(&edata, ep_user, sizeof (edata)))
-                        return -EFAULT;
-
-                if (edata.len > len)
-                        edata.len = len;
-                edata.version = 0;
-                if (copy_to_user (ep_user, &edata, sizeof(edata)))
-                        return -EFAULT;
-
-                /* cas_get_regs handles locks (cp->lock).  */
-                ptr = cas_get_regs(cp);
-                if (ptr == NULL)
-                        return -ENOMEM;
-                if (copy_to_user(ep_user + sizeof (edata), ptr, edata.len))
-                        return -EFAULT;
-
-                kfree(ptr);
-                return (0);
-        }
-        case ETHTOOL_GSTRINGS: {
-                struct ethtool_gstrings edata;
-                int len;
-
-                if (copy_from_user(&edata, ep_user, sizeof(edata)))
-                        return -EFAULT;
-
-                len = edata.len;
-                switch(edata.string_set) {
-                case ETH_SS_STATS:
-                        edata.len = (len < CAS_NUM_STAT_KEYS) ?
-                                len : CAS_NUM_STAT_KEYS;
-                        if (copy_to_user(ep_user, &edata, sizeof(edata)))
-                                return -EFAULT;
-
-                        if (copy_to_user(ep_user + sizeof(edata),
-                                         &ethtool_cassini_statnames, 
-                                         (edata.len * ETH_GSTRING_LEN)))
-                                return -EFAULT;
-                        return 0;
-                default:
-                        return -EINVAL;
-                }
-        }
-        case ETHTOOL_GSTATS: {
-                int i = 0;
-                u64 *tmp;
-                struct ethtool_stats edata;
-                struct net_device_stats *stats;
-                int len;
-
-                if (copy_from_user(&edata, ep_user, sizeof(edata)))
-                        return -EFAULT;
-
-                len = edata.n_stats;
-                stats = cas_get_stats(cp->dev);
-                edata.cmd = ETHTOOL_GSTATS;
-                edata.n_stats = (len < CAS_NUM_STAT_KEYS) ?
-                        len : CAS_NUM_STAT_KEYS;
-                if (copy_to_user(ep_user, &edata, sizeof (edata)))
-                        return -EFAULT;
-
-                tmp = kmalloc(sizeof(u64)*CAS_NUM_STAT_KEYS, GFP_KERNEL);
-                if (tmp) {
-                        tmp[i++] = stats->collisions;
-                        tmp[i++] = stats->rx_bytes;
-                        tmp[i++] = stats->rx_crc_errors;
-                        tmp[i++] = stats->rx_dropped;
-                        tmp[i++] = stats->rx_errors;
-                        tmp[i++] = stats->rx_fifo_errors;
-                        tmp[i++] = stats->rx_frame_errors;
-                        tmp[i++] = stats->rx_length_errors;
-                        tmp[i++] = stats->rx_over_errors;
-                        tmp[i++] = stats->rx_packets;
-                        tmp[i++] = stats->tx_aborted_errors;
-                        tmp[i++] = stats->tx_bytes;
-                        tmp[i++] = stats->tx_dropped;
-                        tmp[i++] = stats->tx_errors;
-                        tmp[i++] = stats->tx_fifo_errors;
-                        tmp[i++] = stats->tx_packets;
-                        BUG_ON(i != CAS_NUM_STAT_KEYS);
-
-                        i = copy_to_user(ep_user + sizeof(edata),
-                                         tmp, sizeof(u64)*edata.n_stats);
-                        kfree(tmp);
-                } else {
-                        return -ENOMEM;
-                }
-                if (i)
-                        return -EFAULT;
-                return 0;
-        }
-        }
+static void cas_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+         memcpy(data, &ethtool_cassini_statnames, 
+                                         CAS_NUM_STAT_KEYS * ETH_GSTRING_LEN);
+}
 
-        return -EOPNOTSUPP;
+static void cas_get_ethtool_stats(struct net_device *dev,
+                                      struct ethtool_stats *estats, u64 *data)
+{
+        struct cas *cp = netdev_priv(dev);
+        struct net_device_stats *stats = cas_get_stats(cp->dev);
+        int i = 0;
+        data[i++] = stats->collisions;
+        data[i++] = stats->rx_bytes;
+        data[i++] = stats->rx_crc_errors;
+        data[i++] = stats->rx_dropped;
+        data[i++] = stats->rx_errors;
+        data[i++] = stats->rx_fifo_errors;
+        data[i++] = stats->rx_frame_errors;
+        data[i++] = stats->rx_length_errors;
+        data[i++] = stats->rx_over_errors;
+        data[i++] = stats->rx_packets;
+        data[i++] = stats->tx_aborted_errors;
+        data[i++] = stats->tx_bytes;
+        data[i++] = stats->tx_dropped;
+        data[i++] = stats->tx_errors;
+        data[i++] = stats->tx_fifo_errors;
+        data[i++] = stats->tx_packets;
+        BUG_ON(i != CAS_NUM_STAT_KEYS);
 }
 
+static struct ethtool_ops cas_ethtool_ops = {
+        .get_drvinfo            = cas_get_drvinfo,
+        .get_settings           = cas_get_settings,
+        .set_settings           = cas_set_settings,
+        .nway_reset             = cas_nway_reset,
+        .get_link               = cas_get_link,
+        .get_msglevel           = cas_get_msglevel,
+        .set_msglevel           = cas_set_msglevel,
+        .get_regs_len           = cas_get_regs_len,
+        .get_regs               = cas_get_regs,
+        .get_stats_count        = cas_get_stats_count,
+        .get_strings            = cas_get_strings,
+        .get_ethtool_stats      = cas_get_ethtool_stats,
+};
+
 static int cas_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 {
         struct cas *cp = netdev_priv(dev);
@@ -4883,10 +4812,6 @@ static int cas_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
          */
         down(&cp->pm_sem);
         switch (cmd) {
-        case SIOCETHTOOL:
-                rc = cas_ethtool_ioctl(dev, ifr->ifr_data);
-                break;
-
         case SIOCGMIIPHY:               /* Get address of MII PHY in use. */
                 data->phy_id = cp->phy_addr;
                 /* Fallthrough... */
@@ -5112,6 +5037,7 @@ static int __devinit cas_init_one(struct pci_dev *pdev,
         dev->get_stats = cas_get_stats;
         dev->set_multicast_list = cas_set_multicast;
         dev->do_ioctl = cas_ioctl;
+        dev->ethtool_ops = &cas_ethtool_ops;
         dev->tx_timeout = cas_tx_timeout;
         dev->watchdog_timeo = CAS_TX_TIMEOUT;
         dev->change_mtu = cas_change_mtu;