X-Git-Url: http://tinc-vpn.org/git/browse?a=blobdiff_plain;ds=sidebyside;f=src%2Fnet.h;h=b570d5e1c584e7dcfa17a8a0fc892f89bd3fde06;hb=b90c42a33b78f22b7046da5a5445c712020f30eb;hp=d8aa64cde0b65b3ac2501a6d9db0e41ba3566a83;hpb=415910897122da0073a862784d148802ca390020;p=tinc

diff --git a/src/net.h b/src/net.h
index d8aa64cd..b570d5e1 100644
--- a/src/net.h
+++ b/src/net.h
@@ -32,8 +32,8 @@
 #define MTU 1518        /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */
 #endif
 
-/* MAXSIZE is the maximum size of an encapsulated packet: MTU + seqno + padding + HMAC + compressor overhead */
-#define MAXSIZE (MTU + 4 + CIPHER_MAX_BLOCK_SIZE + DIGEST_MAX_SIZE + MTU/64 + 20)
+/* MAXSIZE is the maximum size of an encapsulated packet: MTU + seqno + srcid + dstid + padding + HMAC + compressor overhead */
+#define MAXSIZE (MTU + 4 + sizeof(node_id_t) + sizeof(node_id_t) + CIPHER_MAX_BLOCK_SIZE + DIGEST_MAX_SIZE + MTU/64 + 20)
 
 /* MAXBUFSIZE is the maximum size of a request: enough for a MAXSIZEd packet or a 8192 bits RSA key */
 #define MAXBUFSIZE ((MAXSIZE > 2048 ? MAXSIZE : 2048) + 128)
@@ -52,6 +52,10 @@ typedef struct ipv6_t {
 	uint16_t x[8];
 } ipv6_t;
 
+typedef struct node_id_t {
+	uint8_t x[6];
+} node_id_t;
+
 typedef short length_t;
 
 #define AF_UNKNOWN 255
@@ -83,7 +87,9 @@ typedef union sockaddr_t {
 typedef struct vpn_packet_t {
 	length_t len;           /* the actual number of bytes in the `data' field */
 	int priority;           /* priority or TOS */
-	uint32_t seqno;         /* 32 bits sequence number (network byte order of course) */
+	node_id_t dstid;        /* node ID of the final recipient */
+	node_id_t srcid;        /* node ID of the original sender */
+	uint8_t seqno[4];       /* 32 bits sequence number (network byte order of course) */
 	uint8_t data[MAXSIZE];
 } vpn_packet_t;