Fix mixed declarations and code

ntop · May 2, 2024 · defeb55 · defeb55
1 parent 0dfed62
commit defeb55
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/kernel/pf_ring.c b/kernel/pf_ring.c
@@ -2559,10 +2559,12 @@ static int parse_raw_pkt(u_char *data, u_int32_t data_len,
         }
       }
     } else if(hdr->extended_hdr.parsed_pkt.l3_proto == IPPROTO_GRE /* 0x47 */) {    /* GRE */
-      if(data_len < hdr->extended_hdr.parsed_pkt.offset.l4_offset + sizeof(struct gre_header)) return(1);
-      struct gre_header *gre = (struct gre_header*)(&data[hdr->extended_hdr.parsed_pkt.offset.l4_offset]);
+      struct gre_header *gre;
       int gre_offset;
 
+      if(data_len < hdr->extended_hdr.parsed_pkt.offset.l4_offset + sizeof(struct gre_header)) return(1);
+      gre = (struct gre_header*)(&data[hdr->extended_hdr.parsed_pkt.offset.l4_offset]);
+
       gre->flags_and_version = ntohs(gre->flags_and_version);
       gre->proto = ntohs(gre->proto);
       gre_offset = sizeof(struct gre_header);