fix the c form of the xdp program

Author: varun-r-mallya

tests/c-form/xdp_test.bpf.c

@@ -1,36 +1,33 @@
-#include "vmlinux.h"
-#include <bpf/bpf_helpers.h>
 #include <linux/bpf.h>
 #include <linux/if_ether.h>
 #include <linux/ip.h>
+#include <bpf/bpf_helpers.h>
 
 struct fake_iphdr {
-  unsigned short useless;
-  unsigned short tot_len;
-  unsigned short id;
-  unsigned short frag_off;
-  unsigned char ttl;
-  unsigned char protocol;
-  unsigned short check;
-  unsigned int saddr;
-  unsigned int daddr;
+    unsigned short useless;
+    unsigned short tot_len;
+    unsigned short id;
+    unsigned short frag_off;
+    unsigned char  ttl;
+    unsigned char  protocol;
+    unsigned short check;
+    unsigned int saddr;
+    unsigned int daddr;
 };
 
 SEC("xdp")
 int xdp_prog(struct xdp_md *ctx) {
   unsigned long data = ctx->data;
   unsigned long data_end = ctx->data_end;
 
-  if (data + sizeof(struct ethhdr) + sizeof(struct fake_iphdr) <= data_end) {
-    struct fake_iphdr *iph = (void *)data + sizeof(struct ethhdr);
-
-    bpf_printk("%d", iph->saddr);
-
-    return XDP_PASS;
-  } else {
+  if (data + sizeof(struct ethhdr) + sizeof(struct fake_iphdr) > data_end) {
     return XDP_ABORTED;
   }
-  struct task_struct * a = btf_bpf_get_current_task_btf();
+  struct fake_iphdr *iph = (void *)data + sizeof(struct ethhdr);
+
+   bpf_printk("%d", iph->saddr);
+
+   return XDP_PASS;
 }
 
 char _license[] SEC("license") = "GPL";