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Diffstat (limited to 'samples/bpf/xdp1_kern.c')
-rw-r--r--samples/bpf/xdp1_kern.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/samples/bpf/xdp1_kern.c b/samples/bpf/xdp1_kern.c
index f0c5d95084de..0a5c704badd0 100644
--- a/samples/bpf/xdp1_kern.c
+++ b/samples/bpf/xdp1_kern.c
@@ -39,11 +39,13 @@ static int parse_ipv6(void *data, u64 nh_off, void *data_end)
return ip6h->nexthdr;
}
-SEC("xdp1")
+#define XDPBUFSIZE 64
+SEC("xdp.frags")
int xdp_prog1(struct xdp_md *ctx)
{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
+ __u8 pkt[XDPBUFSIZE] = {};
+ void *data_end = &pkt[XDPBUFSIZE-1];
+ void *data = pkt;
struct ethhdr *eth = data;
int rc = XDP_DROP;
long *value;
@@ -51,6 +53,9 @@ int xdp_prog1(struct xdp_md *ctx)
u64 nh_off;
u32 ipproto;
+ if (bpf_xdp_load_bytes(ctx, 0, pkt, sizeof(pkt)))
+ return rc;
+
nh_off = sizeof(*eth);
if (data + nh_off > data_end)
return rc;