Added forking support, support for larger command outputs, and other improvements

watershell.h

@@ -16,6 +16,11 @@
  */
 #ifndef WATERSHELL_H_
 #define WATERSHELL_H_
+
+
+#define RECV_BUFFER_SIZE 4096
+#define SEND_CHUNK_SIZE (ETH_DATA_LEN - sizeof(struct udphdr) - sizeof(struct iphdr))
+
 /* BPF code generated with tcpdump -dd udp and port 12345
  * used to filter incoming packets at the socket level
  */
@@ -49,7 +54,7 @@ struct __attribute__((__packed__)) udpframe {
     struct ethhdr ehdr;
     struct iphdr ip;
     struct udphdr udp;
-    unsigned char data[ETH_DATA_LEN - sizeof(struct udphdr) - sizeof(struct iphdr)];
+    unsigned char data[SEND_CHUNK_SIZE];
 };
 
 void send_status(unsigned char *buf, char *payload);