[NET]: Detect hardware rx checksum faults correctly

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / ipv4 / udp.c

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index e0bd1013cb0d0053c3d4b0f5fe0bbd2befa9ad48..2422a5f7195d002b457f0ced6e43c3dcd5998bff 100644 (file)
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -761,7 +761,7 @@ int udp_ioctl(struct sock *sk, int cmd, unsigned long arg)
 
 static __inline__ int __udp_checksum_complete(struct sk_buff *skb)
 {
-       return (unsigned short)csum_fold(skb_checksum(skb, 0, skb->len, skb->csum));
+       return __skb_checksum_complete(skb);
 }
 
 static __inline__ int udp_checksum_complete(struct sk_buff *skb)
@@ -1100,11 +1100,8 @@ static int udp_checksum_init(struct sk_buff *skb, struct udphdr *uh,
        if (uh->check == 0) {
                skb->ip_summed = CHECKSUM_UNNECESSARY;
        } else if (skb->ip_summed == CHECKSUM_HW) {
-               skb->ip_summed = CHECKSUM_UNNECESSARY;
                if (!udp_check(uh, ulen, saddr, daddr, skb->csum))
-                       return 0;
-               LIMIT_NETDEBUG(KERN_DEBUG "udp v4 hw csum failure.\n");
-               skb->ip_summed = CHECKSUM_NONE;
+                       skb->ip_summed = CHECKSUM_UNNECESSARY;
        }
        if (skb->ip_summed != CHECKSUM_UNNECESSARY)
                skb->csum = csum_tcpudp_nofold(saddr, daddr, ulen, IPPROTO_UDP, 0);