ethtool: consolidate work with ethtool_ops

No need to check if ethtool_ops == NULL since it can't be.
Use local variable "ops" in functions where it is present
instead of dev->ethtool_ops
Introduce local variable "ops" in functions where dev->ethtool_ops is used
many times.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Reviewed-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index a870543..d9d5520 100644 (file)
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -175,7 +175,7 @@ static int __ethtool_get_sset_count(struct net_device *dev, int sset)
        if (sset == ETH_SS_FEATURES)
                return ARRAY_SIZE(netdev_features_strings);
 
-       if (ops && ops->get_sset_count && ops->get_strings)
+       if (ops->get_sset_count && ops->get_strings)
                return ops->get_sset_count(dev, sset);
        else
                return -EOPNOTSUPP;
@@ -311,7 +311,7 @@ int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 {
        ASSERT_RTNL();
 
-       if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings)
+       if (!dev->ethtool_ops->get_settings)
                return -EOPNOTSUPP;
 
        memset(cmd, 0, sizeof(struct ethtool_cmd));
@@ -355,7 +355,7 @@ static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
 
        memset(&info, 0, sizeof(info));
        info.cmd = ETHTOOL_GDRVINFO;
-       if (ops && ops->get_drvinfo) {
+       if (ops->get_drvinfo) {
                ops->get_drvinfo(dev, &info);
        } else if (dev->dev.parent && dev->dev.parent->driver) {
                strlcpy(info.bus_info, dev_name(dev->dev.parent),
@@ -370,7 +370,7 @@ static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
         * this method of obtaining string set info is deprecated;
         * Use ETHTOOL_GSSET_INFO instead.
         */
-       if (ops && ops->get_sset_count) {
+       if (ops->get_sset_count) {
                int rc;
 
                rc = ops->get_sset_count(dev, ETH_SS_TEST);
@@ -383,9 +383,9 @@ static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
                if (rc >= 0)
                        info.n_priv_flags = rc;
        }
-       if (ops && ops->get_regs_len)
+       if (ops->get_regs_len)
                info.regdump_len = ops->get_regs_len(dev);
-       if (ops && ops->get_eeprom_len)
+       if (ops->get_eeprom_len)
                info.eedump_len = ops->get_eeprom_len(dev);
 
        if (copy_to_user(useraddr, &info, sizeof(info)))
@@ -590,13 +590,14 @@ static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
        struct ethtool_rxnfc rx_rings;
        u32 user_size, dev_size, i;
        u32 *indir;
+       const struct ethtool_ops *ops = dev->ethtool_ops;
        int ret;
 
-       if (!dev->ethtool_ops->get_rxfh_indir_size ||
-           !dev->ethtool_ops->set_rxfh_indir ||
-           !dev->ethtool_ops->get_rxnfc)
+       if (!ops->get_rxfh_indir_size || !ops->set_rxfh_indir ||
+           !ops->get_rxnfc)
                return -EOPNOTSUPP;
-       dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
+
+       dev_size = ops->get_rxfh_indir_size(dev);
        if (dev_size == 0)
                return -EOPNOTSUPP;
 
@@ -613,7 +614,7 @@ static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
                return -ENOMEM;
 
        rx_rings.cmd = ETHTOOL_GRXRINGS;
-       ret = dev->ethtool_ops->get_rxnfc(dev, &rx_rings, NULL);
+       ret = ops->get_rxnfc(dev, &rx_rings, NULL);
        if (ret)
                goto out;
 
@@ -639,7 +640,7 @@ static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
                }
        }
 
-       ret = dev->ethtool_ops->set_rxfh_indir(dev, indir);
+       ret = ops->set_rxfh_indir(dev, indir);
 
 out:
        kfree(indir);
@@ -1082,9 +1083,10 @@ static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
 {
        struct ethtool_value id;
        static bool busy;
+       const struct ethtool_ops *ops = dev->ethtool_ops;
        int rc;
 
-       if (!dev->ethtool_ops->set_phys_id)
+       if (!ops->set_phys_id)
                return -EOPNOTSUPP;
 
        if (busy)
@@ -1093,7 +1095,7 @@ static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
        if (copy_from_user(&id, useraddr, sizeof(id)))
                return -EFAULT;
 
-       rc = dev->ethtool_ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
+       rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
        if (rc < 0)
                return rc;
 
@@ -1118,7 +1120,7 @@ static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
                        i = n;
                        do {
                                rtnl_lock();
-                               rc = dev->ethtool_ops->set_phys_id(dev,
+                               rc = ops->set_phys_id(dev,
                                    (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
                                rtnl_unlock();
                                if (rc)
@@ -1133,7 +1135,7 @@ static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
        dev_put(dev);
        busy = false;
 
-       (void)dev->ethtool_ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
+       (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
        return rc;
 }
 
@@ -1275,7 +1277,7 @@ static int ethtool_get_dump_flag(struct net_device *dev,
        struct ethtool_dump dump;
        const struct ethtool_ops *ops = dev->ethtool_ops;
 
-       if (!dev->ethtool_ops->get_dump_flag)
+       if (!ops->get_dump_flag)
                return -EOPNOTSUPP;
 
        if (copy_from_user(&dump, useraddr, sizeof(dump)))
@@ -1299,8 +1301,7 @@ static int ethtool_get_dump_data(struct net_device *dev,
        const struct ethtool_ops *ops = dev->ethtool_ops;
        void *data = NULL;
 
-       if (!dev->ethtool_ops->get_dump_data ||
-               !dev->ethtool_ops->get_dump_flag)
+       if (!ops->get_dump_data || !ops->get_dump_flag)
                return -EOPNOTSUPP;
 
        if (copy_from_user(&dump, useraddr, sizeof(dump)))
@@ -1346,13 +1347,9 @@ static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
        info.cmd = ETHTOOL_GET_TS_INFO;
 
        if (phydev && phydev->drv && phydev->drv->ts_info) {
-
                err = phydev->drv->ts_info(phydev, &info);
-
-       } else if (dev->ethtool_ops && dev->ethtool_ops->get_ts_info) {
-
+       } else if (ops->get_ts_info) {
                err = ops->get_ts_info(dev, &info);
-
        } else {
                info.so_timestamping =
                        SOF_TIMESTAMPING_RX_SOFTWARE |