From 377d97393d93cca146937058986050a30857eec7 Mon Sep 17 00:00:00 2001
From: Hadar Hen Zion <hadarh@mellanox.com>
Date: Mon, 4 Feb 2013 03:01:20 +0000
Subject: [PATCH] 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>
---
.../net/ethernet/mellanox/mlx4/en_ethtool.c | 52 ++++++++++++-------
1 file changed, 34 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index 911d48876b32..3e993d5a1994 100644
--- 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,
--
2.20.1