Adding upstream version 2.06.upstream/2.06upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 921 insertions, 0 deletions

diff --git a/include/grub/net.h b/include/grub/net.h
new file mode 100644
index 0000000..7ae4b6b
--- /dev/null
+++ b/include/grub/net.h
@@ -0,0 +1,583 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2010,2011  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_NET_HEADER
+#define GRUB_NET_HEADER	1
+
+#include <grub/types.h>
+#include <grub/err.h>
+#include <grub/list.h>
+#include <grub/fs.h>
+#include <grub/file.h>
+#include <grub/mm.h>
+#include <grub/net/netbuff.h>
+
+enum
+  {
+    GRUB_NET_MAX_LINK_HEADER_SIZE = 64,
+    GRUB_NET_UDP_HEADER_SIZE = 8,
+    GRUB_NET_TCP_HEADER_SIZE = 20,
+    GRUB_NET_OUR_IPV4_HEADER_SIZE = 20,
+    GRUB_NET_OUR_IPV6_HEADER_SIZE = 40,
+    GRUB_NET_OUR_MAX_IP_HEADER_SIZE = 40,
+    GRUB_NET_TCP_RESERVE_SIZE = GRUB_NET_TCP_HEADER_SIZE 
+    + GRUB_NET_OUR_IPV4_HEADER_SIZE
+    + GRUB_NET_MAX_LINK_HEADER_SIZE
+  };
+
+typedef enum grub_link_level_protocol_id 
+{
+  GRUB_NET_LINK_LEVEL_PROTOCOL_ETHERNET
+} grub_link_level_protocol_id_t;
+
+typedef struct grub_net_link_level_address
+{
+  grub_link_level_protocol_id_t type;
+  union
+  {
+    grub_uint8_t mac[6];
+  };
+} grub_net_link_level_address_t;
+
+typedef enum grub_net_interface_flags
+  {
+    GRUB_NET_INTERFACE_HWADDRESS_IMMUTABLE = 1,
+    GRUB_NET_INTERFACE_ADDRESS_IMMUTABLE = 2,
+    GRUB_NET_INTERFACE_PERMANENT = 4
+  } grub_net_interface_flags_t;
+
+typedef enum grub_net_card_flags
+  {
+    GRUB_NET_CARD_HWADDRESS_IMMUTABLE = 1,
+    GRUB_NET_CARD_NO_MANUAL_INTERFACES = 2
+  } grub_net_card_flags_t;
+
+struct grub_net_card;
+
+struct grub_net_card_driver
+{
+  struct grub_net_card_driver *next;
+  struct grub_net_card_driver **prev;
+  const char *name;
+  grub_err_t (*open) (struct grub_net_card *dev);
+  void (*close) (struct grub_net_card *dev);
+  grub_err_t (*send) (struct grub_net_card *dev,
+		      struct grub_net_buff *buf);
+  struct grub_net_buff * (*recv) (struct grub_net_card *dev);
+};
+
+typedef struct grub_net_packet
+{
+  struct grub_net_packet *next;
+  struct grub_net_packet *prev;
+  struct grub_net_packets *up;
+  struct grub_net_buff *nb;
+} grub_net_packet_t;
+
+typedef struct grub_net_packets
+{
+  grub_net_packet_t *first;
+  grub_net_packet_t *last;
+  grub_size_t count;
+} grub_net_packets_t;
+
+#ifdef GRUB_MACHINE_EFI
+#include <grub/efi/api.h>
+#endif
+
+struct grub_net_slaac_mac_list
+{
+  struct grub_net_slaac_mac_list *next;
+  struct grub_net_slaac_mac_list **prev;
+  grub_net_link_level_address_t address;
+  int slaac_counter;
+  char *name;
+};
+
+struct grub_net_link_layer_entry;
+
+struct grub_net_card
+{
+  struct grub_net_card *next;
+  struct grub_net_card **prev;
+  const char *name;
+  struct grub_net_card_driver *driver;
+  grub_net_link_level_address_t default_address;
+  grub_net_card_flags_t flags;
+  int num_ifaces;
+  int opened;
+  unsigned idle_poll_delay_ms;
+  grub_uint64_t last_poll;
+  grub_size_t mtu;
+  struct grub_net_slaac_mac_list *slaac_list;
+  grub_ssize_t new_ll_entry;
+  struct grub_net_link_layer_entry *link_layer_table;
+  void *txbuf;
+  void *rcvbuf;
+  grub_size_t rcvbufsize;
+  grub_size_t txbufsize;
+  int txbusy;
+  union
+  {
+#ifdef GRUB_MACHINE_EFI
+    struct
+    {
+      struct grub_efi_simple_network *efi_net;
+      grub_efi_handle_t efi_handle;
+      grub_size_t last_pkt_size;
+    };
+#endif
+    void *data;
+    int data_num;
+  };
+};
+
+struct grub_net_network_level_interface;
+
+typedef enum grub_network_level_protocol_id 
+{
+  GRUB_NET_NETWORK_LEVEL_PROTOCOL_DHCP_RECV,
+  GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4,
+  GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV6
+} grub_network_level_protocol_id_t;
+
+typedef enum
+{
+  DNS_OPTION_IPV4,
+  DNS_OPTION_IPV6,
+  DNS_OPTION_PREFER_IPV4,
+  DNS_OPTION_PREFER_IPV6
+} grub_dns_option_t;
+
+typedef struct grub_net_network_level_address
+{
+  grub_network_level_protocol_id_t type;
+  union
+  {
+    grub_uint32_t ipv4;
+    grub_uint64_t ipv6[2];
+  };
+  grub_dns_option_t option;
+} grub_net_network_level_address_t;
+
+typedef struct grub_net_network_level_netaddress
+{
+  grub_network_level_protocol_id_t type;
+  union
+  {
+    struct {
+      grub_uint32_t base;
+      int masksize; 
+    } ipv4;
+    struct {
+      grub_uint64_t base[2];
+      int masksize; 
+    } ipv6;
+  };
+} grub_net_network_level_netaddress_t;
+
+struct grub_net_route
+{
+  struct grub_net_route *next;
+  struct grub_net_route **prev;
+  grub_net_network_level_netaddress_t target;
+  char *name;
+  struct grub_net_network_level_protocol *prot;
+  int is_gateway;
+  struct grub_net_network_level_interface *interface;
+  grub_net_network_level_address_t gw;
+};
+
+#define FOR_PACKETS(cont,var) for (var = (cont).first; var; var = var->next)
+
+static inline grub_err_t
+grub_net_put_packet (grub_net_packets_t *pkts, struct grub_net_buff *nb)
+{
+  struct grub_net_packet *n;
+
+  n = grub_malloc (sizeof (*n));
+  if (!n)
+    return grub_errno;
+
+  n->nb = nb;
+  n->next = NULL;
+  n->prev = NULL;
+  n->up = pkts;
+  if (pkts->first)
+    {
+      pkts->last->next = n;
+      pkts->last = n;
+      n->prev = pkts->last;
+    }
+  else
+    pkts->first = pkts->last = n;
+
+  pkts->count++;
+
+  return GRUB_ERR_NONE;
+}
+
+static inline void
+grub_net_remove_packet (grub_net_packet_t *pkt)
+{
+  pkt->up->count--;
+
+  if (pkt->prev)
+    pkt->prev->next = pkt->next;
+  else
+    pkt->up->first = pkt->next;
+  if (pkt->next)
+    pkt->next->prev = pkt->prev;
+  else
+    pkt->up->last = pkt->prev;
+  grub_free (pkt);
+}
+
+typedef struct grub_net_app_protocol *grub_net_app_level_t;
+
+typedef struct grub_net_socket *grub_net_socket_t;
+
+struct grub_net_app_protocol 
+{
+  struct grub_net_app_protocol *next;
+  struct grub_net_app_protocol **prev;
+  const char *name;
+  grub_err_t (*dir) (grub_device_t device, const char *path,
+		     int (*hook) (const char *filename,
+				  const struct grub_dirhook_info *info));
+  grub_err_t (*open) (struct grub_file *file, const char *filename);
+  grub_err_t (*seek) (struct grub_file *file, grub_off_t off);
+  grub_err_t (*close) (struct grub_file *file);
+  grub_err_t (*packets_pulled) (struct grub_file *file);
+};
+
+typedef struct grub_net
+{
+  char *server;
+  char *name;
+  grub_net_app_level_t protocol;
+  grub_net_packets_t packs;
+  grub_off_t offset;
+  grub_fs_t fs;
+  int eof;
+  int stall;
+} *grub_net_t;
+
+extern grub_net_t (*EXPORT_VAR (grub_net_open)) (const char *name);
+
+struct grub_net_network_level_interface
+{
+  struct grub_net_network_level_interface *next;
+  struct grub_net_network_level_interface **prev;
+  char *name;
+  struct grub_net_card *card;
+  grub_net_network_level_address_t address;
+  grub_net_link_level_address_t hwaddress;
+  grub_net_interface_flags_t flags;
+  struct grub_net_bootp_packet *dhcp_ack;
+  grub_size_t dhcp_acklen;
+  grub_uint16_t vlantag;
+  grub_uint32_t xid;      /* DHCPv4 transaction id */
+  grub_uint32_t srv_id;   /* DHCPv4 server_identifier */
+  grub_uint32_t my_ip;    /* DHCPv4 offered IP address */
+  unsigned dhcp_tmo_left; /* DHCPv4 running retransmission timeout */
+  unsigned dhcp_tmo;      /* DHCPv4 current retransmission timeout */
+  void *data;
+};
+
+struct grub_net_session;
+
+struct grub_net_session_level_protocol
+{
+  void (*close) (struct grub_net_session *session);
+  grub_ssize_t (*recv) (struct grub_net_session *session, void *buf,
+		       grub_size_t size);
+  grub_err_t (*send) (struct grub_net_session *session, void *buf,
+		      grub_size_t size);
+};
+
+struct grub_net_session
+{
+  struct grub_net_session_level_protocol *protocol;
+  void *data;
+};
+
+static inline void
+grub_net_session_close (struct grub_net_session *session)
+{
+  session->protocol->close (session);
+}
+
+static inline grub_err_t
+grub_net_session_send (struct grub_net_session *session, void *buf,
+		       grub_size_t size)
+{
+  return session->protocol->send (session, buf, size);
+}
+
+static inline grub_ssize_t
+grub_net_session_recv (struct grub_net_session *session, void *buf,
+		       grub_size_t size)
+{
+  return session->protocol->recv (session, buf, size);
+}
+
+struct grub_net_network_level_interface *
+grub_net_add_addr (const char *name,
+		   struct grub_net_card *card,
+		   const grub_net_network_level_address_t *addr,
+		   const grub_net_link_level_address_t *hwaddress,
+		   grub_net_interface_flags_t flags);
+
+extern struct grub_net_network_level_interface *grub_net_network_level_interfaces;
+#define FOR_NET_NETWORK_LEVEL_INTERFACES(var) for (var = grub_net_network_level_interfaces; var; var = var->next)
+#define FOR_NET_NETWORK_LEVEL_INTERFACES_SAFE(var,next) for (var = grub_net_network_level_interfaces, next = (var ? var->next : 0); var; var = next, next = (var ? var->next : 0))
+
+
+extern grub_net_app_level_t grub_net_app_level_list;
+
+#ifndef GRUB_LST_GENERATOR
+static inline void
+grub_net_app_level_register (grub_net_app_level_t proto)
+{
+  grub_list_push (GRUB_AS_LIST_P (&grub_net_app_level_list),
+		  GRUB_AS_LIST (proto));
+}
+#endif
+
+static inline void
+grub_net_app_level_unregister (grub_net_app_level_t proto)
+{
+  grub_list_remove (GRUB_AS_LIST (proto));
+}
+
+#define FOR_NET_APP_LEVEL(var) FOR_LIST_ELEMENTS((var), \
+						 (grub_net_app_level_list))
+
+extern struct grub_net_card *grub_net_cards;
+
+static inline void
+grub_net_card_register (struct grub_net_card *card)
+{
+  grub_list_push (GRUB_AS_LIST_P (&grub_net_cards),
+		  GRUB_AS_LIST (card));
+}
+
+void
+grub_net_card_unregister (struct grub_net_card *card);
+
+#define FOR_NET_CARDS(var) for (var = grub_net_cards; var; var = var->next)
+#define FOR_NET_CARDS_SAFE(var, next) for (var = grub_net_cards, next = (var ? var->next : 0); var; var = next, next = (var ? var->next : 0))
+
+
+extern struct grub_net_route *grub_net_routes;
+
+static inline void
+grub_net_route_register (struct grub_net_route *route)
+{
+  grub_list_push (GRUB_AS_LIST_P (&grub_net_routes),
+		  GRUB_AS_LIST (route));
+}
+
+#define FOR_NET_ROUTES(var) for (var = grub_net_routes; var; var = var->next)
+struct grub_net_session *
+grub_net_open_tcp (char *address, grub_uint16_t port);
+
+grub_err_t
+grub_net_resolve_address (const char *name,
+			  grub_net_network_level_address_t *addr);
+
+grub_err_t
+grub_net_resolve_net_address (const char *name,
+			      grub_net_network_level_netaddress_t *addr);
+
+grub_err_t
+grub_net_route_address (grub_net_network_level_address_t addr,
+			grub_net_network_level_address_t *gateway,
+			struct grub_net_network_level_interface **interf);
+
+
+grub_err_t
+grub_net_add_route (const char *name,
+		    grub_net_network_level_netaddress_t target,
+		    struct grub_net_network_level_interface *inter);
+
+grub_err_t
+grub_net_add_route_gw (const char *name,
+		       grub_net_network_level_netaddress_t target,
+		       grub_net_network_level_address_t gw,
+		       struct grub_net_network_level_interface *inter);
+
+
+#define GRUB_NET_BOOTP_MAC_ADDR_LEN	16
+
+typedef grub_uint8_t grub_net_bootp_mac_addr_t[GRUB_NET_BOOTP_MAC_ADDR_LEN];
+
+struct grub_net_bootp_packet
+{
+  grub_uint8_t opcode;
+  grub_uint8_t hw_type;		/* hardware type.  */
+  grub_uint8_t hw_len;		/* hardware addr len.  */
+  grub_uint8_t gate_hops;	/* zero it.  */
+  grub_uint32_t ident;		/* random number chosen by client.  */
+  grub_uint16_t seconds;	/* seconds since did initial bootstrap.  */
+  grub_uint16_t flags;
+  grub_uint32_t	client_ip;
+  grub_uint32_t your_ip;
+  grub_uint32_t	server_ip;
+  grub_uint32_t	gateway_ip;
+  grub_net_bootp_mac_addr_t mac_addr;
+  char server_name[64];
+  char boot_file[128];
+  grub_uint8_t vendor[0];
+} GRUB_PACKED;
+
+#define	GRUB_NET_BOOTP_RFC1048_MAGIC_0	0x63
+#define	GRUB_NET_BOOTP_RFC1048_MAGIC_1	0x82
+#define	GRUB_NET_BOOTP_RFC1048_MAGIC_2	0x53
+#define	GRUB_NET_BOOTP_RFC1048_MAGIC_3	0x63
+
+enum
+  {
+    GRUB_NET_BOOTP_PAD = 0,
+    GRUB_NET_BOOTP_NETMASK = 1,
+    GRUB_NET_BOOTP_ROUTER = 3,
+    GRUB_NET_BOOTP_DNS = 6,
+    GRUB_NET_BOOTP_HOSTNAME = 12,
+    GRUB_NET_BOOTP_DOMAIN = 15,
+    GRUB_NET_BOOTP_ROOT_PATH = 17,
+    GRUB_NET_BOOTP_EXTENSIONS_PATH = 18,
+    GRUB_NET_DHCP_REQUESTED_IP_ADDRESS = 50,
+    GRUB_NET_DHCP_OVERLOAD = 52,
+    GRUB_NET_DHCP_MESSAGE_TYPE = 53,
+    GRUB_NET_DHCP_SERVER_IDENTIFIER = 54,
+    GRUB_NET_DHCP_PARAMETER_REQUEST_LIST = 55,
+    GRUB_NET_BOOTP_CLIENT_ID = 61,
+    GRUB_NET_DHCP_TFTP_SERVER_NAME = 66,
+    GRUB_NET_DHCP_BOOTFILE_NAME = 67,
+    GRUB_NET_BOOTP_CLIENT_UUID = 97,
+    GRUB_NET_BOOTP_END = 255
+  };
+
+struct grub_net_network_level_interface *
+grub_net_configure_by_dhcp_ack (const char *name,
+				struct grub_net_card *card,
+				grub_net_interface_flags_t flags,
+				const struct grub_net_bootp_packet *bp,
+				grub_size_t size,
+				int is_def, char **device, char **path);
+
+grub_err_t
+grub_net_add_ipv4_local (struct grub_net_network_level_interface *inf,
+			 int mask);
+
+void
+grub_net_process_dhcp (struct grub_net_buff *nb,
+		       struct grub_net_network_level_interface *iface);
+
+int
+grub_net_hwaddr_cmp (const grub_net_link_level_address_t *a,
+		     const grub_net_link_level_address_t *b);
+int
+grub_net_addr_cmp (const grub_net_network_level_address_t *a,
+		   const grub_net_network_level_address_t *b);
+
+
+/*
+  Currently supported adresses:
+  IPv4:   XXX.XXX.XXX.XXX
+  IPv6:   XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX
+ */
+#define GRUB_NET_MAX_STR_ADDR_LEN sizeof ("XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:XXXX")
+
+/*
+  Currently suppoerted adresses:
+  ethernet:   XX:XX:XX:XX:XX:XX
+ */
+
+#define GRUB_NET_MAX_STR_HWADDR_LEN (sizeof ("XX:XX:XX:XX:XX:XX"))
+
+void
+grub_net_addr_to_str (const grub_net_network_level_address_t *target,
+		      char *buf);
+void
+grub_net_hwaddr_to_str (const grub_net_link_level_address_t *addr, char *str);
+
+grub_err_t
+grub_env_set_net_property (const char *intername, const char *suffix,
+                           const char *value, grub_size_t len);
+
+void
+grub_net_poll_cards (unsigned time, int *stop_condition);
+
+void grub_bootp_init (void);
+void grub_bootp_fini (void);
+
+void grub_dns_init (void);
+void grub_dns_fini (void);
+
+static inline void
+grub_net_network_level_interface_unregister (struct grub_net_network_level_interface *inter)
+{
+  inter->card->num_ifaces--;
+  *inter->prev = inter->next;
+  if (inter->next)
+    inter->next->prev = inter->prev;
+  inter->next = 0;
+  inter->prev = 0;
+}
+
+void
+grub_net_tcp_retransmit (void);
+
+void
+grub_net_link_layer_add_address (struct grub_net_card *card,
+				 const grub_net_network_level_address_t *nl,
+				 const grub_net_link_level_address_t *ll,
+				 int override);
+int
+grub_net_link_layer_resolve_check (struct grub_net_network_level_interface *inf,
+				   const grub_net_network_level_address_t *proto_addr);
+grub_err_t
+grub_net_link_layer_resolve (struct grub_net_network_level_interface *inf,
+			     const grub_net_network_level_address_t *proto_addr,
+			     grub_net_link_level_address_t *hw_addr);
+grub_err_t
+grub_net_dns_lookup (const char *name,
+		     const struct grub_net_network_level_address *servers,
+		     grub_size_t n_servers,
+		     grub_size_t *naddresses,
+		     struct grub_net_network_level_address **addresses,
+		     int cache);
+grub_err_t
+grub_net_add_dns_server (const struct grub_net_network_level_address *s);
+void
+grub_net_remove_dns_server (const struct grub_net_network_level_address *s);
+
+grub_err_t
+grub_net_search_config_file (char *config);
+
+extern char *grub_net_default_server;
+
+#define GRUB_NET_TRIES 40
+#define GRUB_NET_INTERVAL 400
+#define GRUB_NET_INTERVAL_ADDITION 20
+
+#define VLANTAG_IDENTIFIER 0x8100
+
+#endif /* ! GRUB_NET_HEADER */
diff --git a/include/grub/net/arp.h b/include/grub/net/arp.h
new file mode 100644
index 0000000..8d9d081
--- /dev/null
+++ b/include/grub/net/arp.h
@@ -0,0 +1,32 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2010,2011  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_NET_ARP_HEADER
+#define GRUB_NET_ARP_HEADER	1
+#include <grub/misc.h>
+#include <grub/net.h>
+
+extern grub_err_t grub_net_arp_receive (struct grub_net_buff *nb,
+                                        struct grub_net_card *card,
+                                        grub_uint16_t *vlantag);
+
+grub_err_t
+grub_net_arp_send_request (struct grub_net_network_level_interface *inf,
+                           const grub_net_network_level_address_t *proto_addr);
+
+#endif 
diff --git a/include/grub/net/ethernet.h b/include/grub/net/ethernet.h
new file mode 100644
index 0000000..23a935e
--- /dev/null
+++ b/include/grub/net/ethernet.h
@@ -0,0 +1,41 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2010,2011  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_NET_ETHERNET_HEADER
+#define GRUB_NET_ETHERNET_HEADER	1
+#include <grub/types.h>
+#include <grub/net.h>
+
+/* IANA Ethertype */
+typedef enum
+  {
+    GRUB_NET_ETHERTYPE_IP = 0x0800,
+    GRUB_NET_ETHERTYPE_ARP = 0x0806,
+    GRUB_NET_ETHERTYPE_IP6 = 0x86DD,
+  } grub_net_ethertype_t;
+
+grub_err_t 
+send_ethernet_packet (struct grub_net_network_level_interface *inf,
+		      struct grub_net_buff *nb,
+		      grub_net_link_level_address_t target_addr,
+		      grub_net_ethertype_t ethertype);
+grub_err_t 
+grub_net_recv_ethernet_packet (struct grub_net_buff *nb,
+			       struct grub_net_card *card);
+
+#endif 
diff --git a/include/grub/net/ip.h b/include/grub/net/ip.h
new file mode 100644
index 0000000..ab9d68f
--- /dev/null
+++ b/include/grub/net/ip.h
@@ -0,0 +1,98 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2010,2011  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_NET_IP_HEADER
+#define GRUB_NET_IP_HEADER	1
+#include <grub/misc.h>
+#include <grub/net.h>
+
+typedef enum grub_net_ip_protocol
+  {
+    GRUB_NET_IP_ICMP = 1,
+    GRUB_NET_IP_TCP = 6,
+    GRUB_NET_IP_UDP = 17,
+    GRUB_NET_IP_ICMPV6 = 58
+  } grub_net_ip_protocol_t;
+#define GRUB_NET_IP_BROADCAST    0xFFFFFFFF
+
+static inline grub_uint64_t
+grub_net_ipv6_get_id (const grub_net_link_level_address_t *addr)
+{
+  return grub_cpu_to_be64 (((grub_uint64_t) (addr->mac[0] ^ 2) << 56)
+			   | ((grub_uint64_t) addr->mac[1] << 48)
+			   | ((grub_uint64_t) addr->mac[2] << 40)
+			   | 0xfffe000000ULL
+			   | ((grub_uint64_t) addr->mac[3] << 16)
+			   | ((grub_uint64_t) addr->mac[4] << 8)
+			   | ((grub_uint64_t) addr->mac[5]));
+}
+
+grub_uint16_t grub_net_ip_chksum(void *ipv, grub_size_t len);
+
+grub_err_t
+grub_net_recv_ip_packets (struct grub_net_buff *nb,
+			  struct grub_net_card *card,
+			  const grub_net_link_level_address_t *hwaddress,
+			  const grub_net_link_level_address_t *src_hwaddress,
+                          grub_uint16_t *vlantag);
+
+grub_err_t
+grub_net_send_ip_packet (struct grub_net_network_level_interface *inf,
+			 const grub_net_network_level_address_t *target,
+			 const grub_net_link_level_address_t *ll_target_addr,
+			 struct grub_net_buff *nb,
+			 grub_net_ip_protocol_t proto);
+
+grub_err_t 
+grub_net_recv_icmp_packet (struct grub_net_buff *nb,
+			   struct grub_net_network_level_interface *inf,
+			   const grub_net_link_level_address_t *ll_src,
+			   const grub_net_network_level_address_t *src);
+grub_err_t
+grub_net_recv_icmp6_packet (struct grub_net_buff *nb,
+			    struct grub_net_card *card,
+			    struct grub_net_network_level_interface *inf,
+			    const grub_net_link_level_address_t *ll_src,
+			    const grub_net_network_level_address_t *source,
+			    const grub_net_network_level_address_t *dest,
+			    grub_uint8_t ttl);
+grub_err_t
+grub_net_recv_udp_packet (struct grub_net_buff *nb,
+			  struct grub_net_network_level_interface *inf,
+			  const grub_net_network_level_address_t *src);
+grub_err_t
+grub_net_recv_tcp_packet (struct grub_net_buff *nb,
+			  struct grub_net_network_level_interface *inf,
+			  const grub_net_network_level_address_t *source);
+
+grub_uint16_t
+grub_net_ip_transport_checksum (struct grub_net_buff *nb,
+				grub_uint16_t proto,
+				const grub_net_network_level_address_t *src,
+				const grub_net_network_level_address_t *dst);
+
+struct grub_net_network_level_interface *
+grub_net_ipv6_get_link_local (struct grub_net_card *card,
+			      const grub_net_link_level_address_t *hwaddr);
+grub_err_t
+grub_net_icmp6_send_request (struct grub_net_network_level_interface *inf,
+			     const grub_net_network_level_address_t *proto_addr);
+
+grub_err_t
+grub_net_icmp6_send_router_solicit (struct grub_net_network_level_interface *inf);
+#endif 
diff --git a/include/grub/net/netbuff.h b/include/grub/net/netbuff.h
new file mode 100644
index 0000000..1177c12
--- /dev/null
+++ b/include/grub/net/netbuff.h
@@ -0,0 +1,31 @@
+#ifndef GRUB_NETBUFF_HEADER
+#define GRUB_NETBUFF_HEADER
+
+#include <grub/misc.h>
+
+#define NETBUFF_ALIGN 2048
+#define NETBUFFMINLEN 64
+
+struct grub_net_buff
+{
+  /* Pointer to the start of the buffer.  */
+  grub_uint8_t *head;
+  /* Pointer to the data.  */
+  grub_uint8_t *data;
+  /* Pointer to the tail.  */
+  grub_uint8_t *tail;
+  /* Pointer to the end of the buffer.  */
+  grub_uint8_t *end;
+};
+
+grub_err_t grub_netbuff_put (struct grub_net_buff *net_buff, grub_size_t len);
+grub_err_t grub_netbuff_unput (struct grub_net_buff *net_buff, grub_size_t len);
+grub_err_t grub_netbuff_push (struct grub_net_buff *net_buff, grub_size_t len);
+grub_err_t grub_netbuff_pull (struct grub_net_buff *net_buff, grub_size_t len);
+grub_err_t grub_netbuff_reserve (struct grub_net_buff *net_buff, grub_size_t len);
+grub_err_t grub_netbuff_clear (struct grub_net_buff *net_buff);
+struct grub_net_buff * grub_netbuff_alloc (grub_size_t len);
+struct grub_net_buff * grub_netbuff_make_pkt (grub_size_t len);
+void grub_netbuff_free (struct grub_net_buff *net_buff);
+
+#endif
diff --git a/include/grub/net/tcp.h b/include/grub/net/tcp.h
new file mode 100644
index 0000000..5a9305a
--- /dev/null
+++ b/include/grub/net/tcp.h
@@ -0,0 +1,85 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2010,2011  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_NET_TCP_HEADER
+#define GRUB_NET_TCP_HEADER	1
+#include <grub/types.h>
+#include <grub/net.h>
+
+struct grub_net_tcp_socket;
+typedef struct grub_net_tcp_socket *grub_net_tcp_socket_t;
+
+struct grub_net_tcp_listen;
+typedef struct grub_net_tcp_listen *grub_net_tcp_listen_t;
+
+grub_net_tcp_socket_t
+grub_net_tcp_open (char *server,
+		   grub_uint16_t out_port,
+		   grub_err_t (*recv_hook) (grub_net_tcp_socket_t sock,
+					    struct grub_net_buff *nb,
+					    void *data),
+		   void (*error_hook) (grub_net_tcp_socket_t sock,
+				       void *data),
+		   void (*fin_hook) (grub_net_tcp_socket_t sock,
+				     void *data),
+		   void *hook_data);
+
+grub_net_tcp_listen_t
+grub_net_tcp_listen (grub_uint16_t port,
+		     const struct grub_net_network_level_interface *inf,
+		     grub_err_t (*listen_hook) (grub_net_tcp_listen_t listen,
+						grub_net_tcp_socket_t sock,
+						void *data),
+		     void *hook_data);
+
+void
+grub_net_tcp_stop_listen (grub_net_tcp_listen_t listen);
+
+grub_err_t
+grub_net_send_tcp_packet (const grub_net_tcp_socket_t socket,
+			  struct grub_net_buff *nb,
+			  int push);
+
+enum
+  {
+    GRUB_NET_TCP_CONTINUE_RECEIVING,
+    GRUB_NET_TCP_DISCARD,
+    GRUB_NET_TCP_ABORT
+  };
+
+void
+grub_net_tcp_close (grub_net_tcp_socket_t sock, int discard_received);
+
+grub_err_t
+grub_net_tcp_accept (grub_net_tcp_socket_t sock,
+		     grub_err_t (*recv_hook) (grub_net_tcp_socket_t sock,
+					      struct grub_net_buff *nb,
+					      void *data),
+		     void (*error_hook) (grub_net_tcp_socket_t sock,
+					 void *data),
+		     void (*fin_hook) (grub_net_tcp_socket_t sock,
+				       void *data),
+		     void *hook_data);
+
+void
+grub_net_tcp_stall (grub_net_tcp_socket_t sock);
+
+void
+grub_net_tcp_unstall (grub_net_tcp_socket_t sock);
+
+#endif
diff --git a/include/grub/net/udp.h b/include/grub/net/udp.h
new file mode 100644
index 0000000..17f38cf
--- /dev/null
+++ b/include/grub/net/udp.h
@@ -0,0 +1,51 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2010,2011  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_NET_UDP_HEADER
+#define GRUB_NET_UDP_HEADER	1
+#include <grub/types.h>
+#include <grub/net.h>
+
+struct udphdr
+{
+  grub_uint16_t src;
+  grub_uint16_t dst;
+  grub_uint16_t len;
+  grub_uint16_t chksum;
+} GRUB_PACKED;
+
+struct grub_net_udp_socket;
+typedef struct grub_net_udp_socket *grub_net_udp_socket_t;
+
+grub_net_udp_socket_t
+grub_net_udp_open (grub_net_network_level_address_t addr,
+		   grub_uint16_t out_port,
+		   grub_err_t (*recv_hook) (grub_net_udp_socket_t sock,
+					    struct grub_net_buff *nb,
+					    void *data),
+		   void *recv_hook_data);
+
+void
+grub_net_udp_close (grub_net_udp_socket_t sock);
+
+grub_err_t
+grub_net_send_udp_packet (const grub_net_udp_socket_t socket,
+			  struct grub_net_buff *nb);
+
+
+#endif