Update project

load_bpf.c

@@ -65,7 +65,6 @@ int main(void){
             //printf("%lld\n", stats);
             struct in_addr *src = (struct in_addr*)&s_reset.saddr;
             struct in_addr *dest = (struct in_addr*)&s_reset.daddr;
-            //struct in_addr src = s_reset.saddr;
             printf("Sport: %d; dport: %d %s %s\n", s_reset.sport, s_reset.dport, inet_ntoa(*src), inet_ntoa(*dest));
         }
          

tp_tcp.c

@@ -59,16 +59,15 @@ int tcp_retransmit(struct ctx_reset *ctx){
     long long *stats;
     struct reset *s_reset;
     int keys = 0;
-    __u16 sport = 0;
-    __u16 dport = 0;
 
     s_reset = bpf_map_lookup_elem(&tcp_reset_stats, &keys);
     if (!s_reset)
         return 0;
 
+    if (!ctx)
+        return 0;
+
     //*stats += 1;
-    sport = ctx->sport;
-    dport = ctx->dport;
     s_reset->saddr[0] = ctx->saddr[0];
     s_reset->saddr[1] = ctx->saddr[1];
     s_reset->saddr[2] = ctx->saddr[2];
@@ -77,10 +76,10 @@ int tcp_retransmit(struct ctx_reset *ctx){
     s_reset->daddr[1] = ctx->daddr[1];
     s_reset->daddr[2] = ctx->daddr[2];
     s_reset->daddr[3] = ctx->daddr[3];*/
-    s_reset->sport = sport;
-    s_reset->dport = dport;
+    s_reset->sport = ctx->sport;
+    s_reset->dport = ctx->dport;
 
     //bpf_printk("BPF detected TCP received reset %d - %d %d\n", *stats, dport, sport);
-    bpf_printk("BPF detected TCP received reset %d %d\n", dport, sport);
+    bpf_printk("BPF detected TCP received reset %d %d\n", s_reset->sport, s_reset->dport);
     return 0;
 }