From: Yunsheng Lin linyunsheng@huawei.com
commit 9bb5a495424fd4bfa672eb1f31481248562fa156 upstream.
Currently skb_checksum_help()'s return is ignored, but it may return error when it fails to allocate memory when linearizing.
So adds checking for the return of skb_checksum_help().
Fixes: 76ad4f0ee747("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC") Fixes: 3db084d28dc0("net: hns3: Fix for vxlan tx checksum bug") Signed-off-by: Yunsheng Lin linyunsheng@huawei.com Signed-off-by: Huazhong Tan tanhuazhong@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -792,8 +792,6 @@ static bool hns3_tunnel_csum_bug(struct l4.udp->dest == htons(4790)))) return false;
- skb_checksum_help(skb); - return true; }
@@ -871,8 +869,7 @@ static int hns3_set_l2l3l4(struct sk_buf /* the stack computes the IP header already, * driver calculate l4 checksum when not TSO. */ - skb_checksum_help(skb); - return 0; + return skb_checksum_help(skb); }
hns3_set_outer_l2l3l4(skb, ol4_proto, ol_type_vlan_len_msec); @@ -917,7 +914,7 @@ static int hns3_set_l2l3l4(struct sk_buf break; case IPPROTO_UDP: if (hns3_tunnel_csum_bug(skb)) - break; + return skb_checksum_help(skb);
hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1); hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4T_S, @@ -942,8 +939,7 @@ static int hns3_set_l2l3l4(struct sk_buf /* the stack computes the IP header already, * driver calculate l4 checksum when not TSO. */ - skb_checksum_help(skb); - return 0; + return skb_checksum_help(skb); }
return 0;