From 377d97393d93cca146937058986050a30857eec7 Mon Sep 17 00:00:00 2001 From: Hadar Hen Zion 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 Signed-off-by: David S. Miller --- .../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, -- GitLab