tmp use folder

redhat-et · Nov 3, 2022 · 8bdf053 · 8bdf053
1 parent f75c48e
commit 8bdf053
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Showing 5 changed files with 2 additions and 7 deletions.
diff --git a/bpf/xdp_udp.bpf.c b/bpf/xdp_udp.bpf.c
@@ -55,7 +55,6 @@ static __always_inline __u16 udp_checksum(struct iphdr *ip, struct udphdr * udp,
 
     // So we can overflow a bit make this __u32
     __u32 csum_total = 0;
-    __u16 csum;
     __u16 *buf = (void *)udp;
 
     csum_total += (__u16)ip->saddr;
@@ -86,11 +85,7 @@ static __always_inline __u16 udp_checksum(struct iphdr *ip, struct udphdr * udp,
         csum_total += (*(__u8 *)buf);
     }
 
-   // Add any cksum overflow back into __u16
-   csum = (__u16)csum_total + (__u16)(csum_total >> 16);
-
-   csum = ~csum;
-   return csum;
+   return csum_fold_helper(csum_total);
 }
 
 struct backend {

diff --git a/userspace-go/bpf_bpfeb.o b/userspace-go/bpf_bpfeb.o
diff --git a/userspace-go/bpf_bpfel.o b/userspace-go/bpf_bpfel.o
diff --git a/userspace-go/userspace-go b/userspace-go/userspace-go
diff --git a/userspace-go/xdp_udp.go b/userspace-go/xdp_udp.go
@@ -68,7 +68,7 @@ func main() {
 		Shwaddr: hwaddr2bytes("06:56:87:ec:fd:1f"),
 		// Container-Side Veth Mac
 		Dhwaddr: hwaddr2bytes("86:ad:33:29:ff:5e"),
-		Nocksum: 1,
+		Nocksum: 0,
 		Ifindex: 8,
 	}