net/mlx4_en: Fix error propagation for ethtool helper function

Propagate return value of mlx4_en_ethtool_add_mac_rule_by_ipv4 in case of
failure.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index 911d488..3e993d5 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -732,6 +732,7 @@ static int add_ip_rule(struct mlx4_en_priv *priv,
                       struct ethtool_rxnfc *cmd,
                       struct list_head *list_h)
 {
+       int err;
        struct mlx4_spec_list *spec_l2 = NULL;
        struct mlx4_spec_list *spec_l3 = NULL;
        struct ethtool_usrip4_spec *l3_mask = &cmd->fs.m_u.usr_ip4_spec;
@@ -740,14 +741,15 @@ static int add_ip_rule(struct mlx4_en_priv *priv,
        spec_l2 = kzalloc(sizeof(*spec_l2), GFP_KERNEL);
        if (!spec_l2 || !spec_l3) {
                en_err(priv, "Fail to alloc ethtool rule.\n");
-               kfree(spec_l2);
-               kfree(spec_l3);
-               return -ENOMEM;
+               err = -ENOMEM;
+               goto free_spec;
        }
 
-       mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h, spec_l2,
-                                            cmd->fs.h_u.
-                                            usr_ip4_spec.ip4dst);
+       err = mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h, spec_l2,
+                                                  cmd->fs.h_u.
+                                                  usr_ip4_spec.ip4dst);
+       if (err)
+               goto free_spec;
        spec_l3->id = MLX4_NET_TRANS_RULE_ID_IPV4;
        spec_l3->ipv4.src_ip = cmd->fs.h_u.usr_ip4_spec.ip4src;
        if (l3_mask->ip4src)
@@ -758,12 +760,18 @@ static int add_ip_rule(struct mlx4_en_priv *priv,
        list_add_tail(&spec_l3->list, list_h);
 
        return 0;
+
+free_spec:
+       kfree(spec_l2);
+       kfree(spec_l3);
+       return err;
 }
 
 static int add_tcp_udp_rule(struct mlx4_en_priv *priv,
                             struct ethtool_rxnfc *cmd,
                             struct list_head *list_h, int proto)
 {
+       int err;
        struct mlx4_spec_list *spec_l2 = NULL;
        struct mlx4_spec_list *spec_l3 = NULL;
        struct mlx4_spec_list *spec_l4 = NULL;
@@ -774,29 +782,31 @@ static int add_tcp_udp_rule(struct mlx4_en_priv *priv,
        spec_l4 = kzalloc(sizeof(*spec_l4), GFP_KERNEL);
        if (!spec_l2 || !spec_l3 || !spec_l4) {
                en_err(priv, "Fail to alloc ethtool rule.\n");
-               kfree(spec_l2);
-               kfree(spec_l3);
-               kfree(spec_l4);
-               return -ENOMEM;
+               err = -ENOMEM;
+               goto free_spec;
        }
 
        spec_l3->id = MLX4_NET_TRANS_RULE_ID_IPV4;
 
        if (proto == TCP_V4_FLOW) {
-               mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h,
-                                                    spec_l2,
-                                                    cmd->fs.h_u.
-                                                    tcp_ip4_spec.ip4dst);
+               err = mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h,
+                                                          spec_l2,
+                                                          cmd->fs.h_u.
+                                                          tcp_ip4_spec.ip4dst);
+               if (err)
+                       goto free_spec;
                spec_l4->id = MLX4_NET_TRANS_RULE_ID_TCP;
                spec_l3->ipv4.src_ip = cmd->fs.h_u.tcp_ip4_spec.ip4src;
                spec_l3->ipv4.dst_ip = cmd->fs.h_u.tcp_ip4_spec.ip4dst;
                spec_l4->tcp_udp.src_port = cmd->fs.h_u.tcp_ip4_spec.psrc;
                spec_l4->tcp_udp.dst_port = cmd->fs.h_u.tcp_ip4_spec.pdst;
        } else {
-               mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h,
-                                                    spec_l2,
-                                                    cmd->fs.h_u.
-                                                    udp_ip4_spec.ip4dst);
+               err = mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h,
+                                                          spec_l2,
+                                                          cmd->fs.h_u.
+                                                          udp_ip4_spec.ip4dst);
+               if (err)
+                       goto free_spec;
                spec_l4->id = MLX4_NET_TRANS_RULE_ID_UDP;
                spec_l3->ipv4.src_ip = cmd->fs.h_u.udp_ip4_spec.ip4src;
                spec_l3->ipv4.dst_ip = cmd->fs.h_u.udp_ip4_spec.ip4dst;
@@ -818,6 +828,12 @@ static int add_tcp_udp_rule(struct mlx4_en_priv *priv,
        list_add_tail(&spec_l4->list, list_h);
 
        return 0;
+
+free_spec:
+       kfree(spec_l2);
+       kfree(spec_l3);
+       kfree(spec_l4);
+       return err;
 }
 
 static int mlx4_en_ethtool_to_net_trans_rule(struct net_device *dev,