IP6 support

4 files changed, 125 insertions, 8 deletions

diff --git a/src/include/gpxe/icmp6.h b/src/include/gpxe/icmp6.h
new file mode 100644
index 000000000..352103647
--- /dev/null
+++ b/src/include/gpxe/icmp6.h
@@ -0,0 +1,58 @@
+#ifndef _GPXE_ICMP6_H
+#define _GPXE_ICMP6_H
+
+/** @file
+ *
+ * ICMP6 protocol
+ *
+ */
+
+#include <ip.h>
+#include <gpxe/ip6.h>
+#include <gpxe/ndp.h>
+
+#define ICMP6_NSOLICIT 135
+#define ICMP6_NADVERT 136
+
+extern struct tcpip_protocol icmp6_protocol;
+
+struct icmp6_header {
+	uint8_t type;
+	uint8_t code;
+	uint16_t csum;
+	/* Message body */
+};
+
+struct neighbour_solicit {
+	uint8_t type;
+	uint8_t code;
+	uint16_t csum;
+	uint32_t reserved;
+	struct in6_addr target;
+	/* "Compulsory" options */
+	uint8_t opt_type;
+	uint8_t opt_len;
+#warning hack alert
+	uint8_t opt_ll_addr[6];
+};
+
+struct neighbour_advert {
+	uint8_t type;
+	uint8_t code;
+	uint16_t csum;
+	uint8_t flags;
+	uint8_t reserved;
+	struct in6_addr target;
+	uint8_t opt_type;
+	uint8_t opt_len;
+#warning hack alert
+	uint8_t opt_ll_addr[6];
+};
+
+#define ICMP6_FLAGS_ROUTER 0x80
+#define ICMP6_FLAGS_SOLICITED 0x40
+#define ICMP6_FLAGS_OVERRIDE 0x20
+
+int icmp6_send_solicit ( struct net_device *netdev, struct in6_addr *src, struct in6_addr *dest );
+
+#endif /* _GPXE_ICMP6_H */
diff --git a/src/include/gpxe/in.h b/src/include/gpxe/in.h
index eed9c09b3..d502c4c31 100644
--- a/src/include/gpxe/in.h
+++ b/src/include/gpxe/in.h
@@ -10,6 +10,7 @@
 #define IP_IGMP		2
 #define IP_TCP		6
 #define IP_UDP		17
+#define IP_ICMP6	58
 
 /* IP address constants */
 
@@ -36,7 +37,7 @@ struct in6_addr {
                 uint8_t u6_addr8[16];
                 uint16_t u6_addr16[8];
                 uint32_t u6_addr32[4];
-        } in16_u;
+        } in6_u;
 #define s6_addr         in6_u.u6_addr8
 #define s6_addr16       in6_u.u6_addr16
 #define s6_addr32       in6_u.u6_addr32
@@ -67,7 +68,7 @@ struct sockaddr_in6 {
 	 */
 	sa_family_t sin_family;
 	/** TCP/IP port (part of struct @c sockaddr_tcpip) */
-	uint16_t sin_port;
+	uint16_t 	sin_port;
         uint32_t        sin6_flowinfo;  /* Flow number */
         struct in6_addr sin6_addr;      /* 128-bit destination address */
         uint32_t        sin6_scope_id;  /* Scope ID */
diff --git a/src/include/gpxe/ip6.h b/src/include/gpxe/ip6.h
index 69cbd81bb..0589f8e9d 100644
--- a/src/include/gpxe/ip6.h
+++ b/src/include/gpxe/ip6.h
@@ -8,18 +8,33 @@
  */
 
 #include <ip.h>
+#include <gpxe/in.h>
 
 /* IP6 constants */
 
 #define IP6_VERSION	0x6
-#define IP6_HOP_LIMIT	64
+#define IP6_HOP_LIMIT	255
 
-/* IP6 header */
+/**
+ * Packet buffer contents
+ * This is duplicated in tcp.h and here. Ideally it should go into pkbuff.h
+ */
+#define MAX_HDR_LEN	100
+#define MAX_PKB_LEN	1500
+#define MIN_PKB_LEN	MAX_HDR_LEN + 100 /* To account for padding by LL */
+
+#define IP6_EQUAL( in6_addr1, in6_addr2 ) \
+        ( strncmp ( ( char* ) &( in6_addr1 ), ( char* ) &( in6_addr2 ),\
+	sizeof ( struct in6_addr ) ) == 0 )
 
+#define IS_UNSPECIFIED( addr ) \
+	( ( (addr).in6_u.u6_addr32[0] == 0x00000000 ) && \
+	( (addr).in6_u.u6_addr32[1] == 0x00000000 ) && \
+	( (addr).in6_u.u6_addr32[2] == 0x00000000 ) && \
+	( (addr).in6_u.u6_addr32[3] == 0x00000000 ) )
+/* IP6 header */
 struct ip6_header {
-	uint32_t 	vers:4,
-		 	traffic_class:8,
-		 	flow_label:20;
+	uint32_t 	ver_traffic_class_flow_label;
 	uint16_t 	payload_len;
 	uint8_t 	nxt_hdr;
 	uint8_t 	hop_limit;
@@ -27,12 +42,32 @@ struct ip6_header {
 	struct in6_addr dest;
 };
 
+/* IP6 pseudo header */
+struct ipv6_pseudo_header {
+	struct in6_addr src;
+	struct in6_addr dest;
+	uint8_t zero_padding;
+	uint8_t nxt_hdr;
+	uint16_t len;
+};
+
+/* Next header numbers */
+#define IP6_HOPBYHOP 		0x00
+#define IP6_ROUTING 		0x43
+#define IP6_FRAGMENT		0x44
+#define IP6_AUTHENTICATION	0x51
+#define IP6_DEST_OPTS		0x60
+#define IP6_ESP			0x50
+#define IP6_ICMP6		0x58
+#define IP6_NO_HEADER		0x59
+
 struct pk_buff;
 struct net_device;
 struct net_protocol;
 
 extern struct net_protocol ipv6_protocol;
+extern struct tcpip_net_protocol ipv6_tcpip_protocol;
+extern char * inet6_ntoa ( struct in6_addr in6 );
 
-extern int ipv6_tx ( struct pk_buff *pkb, uint16_t trans_proto, struct in6_addr *dest );
 
 #endif /* _GPXE_IP6_H */
diff --git a/src/include/gpxe/ndp.h b/src/include/gpxe/ndp.h
new file mode 100644
index 000000000..ed9411f93
--- /dev/null
+++ b/src/include/gpxe/ndp.h
@@ -0,0 +1,23 @@
+#include <stdint.h>
+#include <byteswap.h>
+#include <errno.h>
+#include <string.h>
+#include <gpxe/icmp6.h>
+#include <gpxe/ip6.h>
+#include <gpxe/in.h>
+#include <gpxe/netdevice.h>
+#include <gpxe/pkbuff.h>
+#include <gpxe/tcpip.h>
+
+#define NDP_STATE_INVALID 0
+#define NDP_STATE_INCOMPLETE 1
+#define NDP_STATE_REACHABLE 2
+#define NDP_STATE_DELAY 3
+#define NDP_STATE_PROBE 4
+#define NDP_STATE_STALE 5
+
+static struct ndp_entry * ndp_find_entry ( struct in6_addr *in6 );
+int ndp_resolve ( struct net_device *netdev, struct in6_addr *src,
+		  struct in6_addr *dest, void *dest_ll_addr );
+int ndp_process_advert ( struct pk_buff *pkb, struct sockaddr_tcpip *st_src,
+			 struct sockaddr_tcpip *st_dest );