[PATCH RFC net-next 3/7] net: ethtool: remove the duplicated handling from ethtool_get_rxrings

[Breno Leitao]

ethtool_get_rxrings() was a copy of ethtool_get_rxnfc(). Clean the code
that will never be executed for GRXRINGS specifically.

Signed-off-by: Breno Leitao <lei...@debian.org>
---
 net/ethtool/ioctl.c | 21 +++------------------
 1 file changed, 3 insertions(+), 18 deletions(-)

diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
index 4214ab33c3c81..1a9ad47f60313 100644
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -1216,7 +1216,6 @@ static noinline_for_stack int ethtool_get_rxrings(struct 
net_device *dev,
        size_t info_size = sizeof(info);
        const struct ethtool_ops *ops = dev->ethtool_ops;
        int ret;
-       void *rule_buf = NULL;
 
        if (!ops->get_rxnfc)
                return -EOPNOTSUPP;
@@ -1225,25 +1224,11 @@ static noinline_for_stack int 
ethtool_get_rxrings(struct net_device *dev,
        if (ret)
                return ret;
 
-       if (info.cmd == ETHTOOL_GRXCLSRLALL) {
-               if (info.rule_cnt > 0) {
-                       if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
-                               rule_buf = kcalloc(info.rule_cnt, sizeof(u32),
-                                                  GFP_USER);
-                       if (!rule_buf)
-                               return -ENOMEM;
-               }
-       }
-
-       ret = ops->get_rxnfc(dev, &info, rule_buf);
+       ret = ops->get_rxnfc(dev, &info, NULL);
        if (ret < 0)
-               goto err_out;
-
-       ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf);
-err_out:
-       kfree(rule_buf);
+               return ret;
 
-       return ret;
+       return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL);
 }
 
 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,

-- 
2.47.3