Network infrastructure
This commit is contained in:
Vladimir 'phcoder' Serbinenko
Manoel R. Abranches
parent
e9b29642bd
commit
4931b0984b
7 changed files with 522 additions and 43 deletions
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@ -24,8 +24,12 @@
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#include <grub/err.h>
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struct grub_disk;
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struct grub_net;
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struct grub_fs;
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struct grub_net
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{
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char *name;
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struct grub_fs *fs;
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};
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struct grub_device
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{
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@ -54,7 +54,10 @@ typedef enum
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GRUB_ERR_MENU,
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GRUB_ERR_TIMEOUT,
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GRUB_ERR_IO,
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GRUB_ERR_ACCESS_DENIED
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GRUB_ERR_ACCESS_DENIED,
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GRUB_ERR_NET_BAD_ADDRESS,
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GRUB_ERR_NET_ROUTE_LOOP,
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GRUB_ERR_NET_NO_ROUTE
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}
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grub_err_t;
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@ -1,6 +1,6 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2007 Free Software Foundation, Inc.
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* Copyright (C) 2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -19,54 +19,224 @@
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#ifndef GRUB_NET_HEADER
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#define GRUB_NET_HEADER 1
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#include <grub/symbol.h>
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#include <grub/err.h>
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#include <grub/types.h>
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#include <grub/err.h>
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#include <grub/list.h>
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struct grub_net;
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struct grub_net_card;
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struct grub_net_dev
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struct grub_net_card_driver
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{
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/* The device name. */
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const char *name;
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/* FIXME: Just a template. */
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int (*probe) (struct grub_net *net, const void *addr);
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void (*reset) (struct grub_net *net);
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int (*poll) (struct grub_net *net);
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void (*transmit) (struct grub_net *net, const void *destip,
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unsigned srcsock, unsigned destsock, const void *packet);
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void (*disable) (struct grub_net *net);
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/* The next net device. */
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struct grub_net_dev *next;
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grub_err_t (*send) (struct grub_net_card *dev, void *buf,
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grub_size_t buflen);
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grub_size_t (*recv) (struct grub_net_card *dev, void *buf,
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grub_size_t buflen);
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};
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typedef struct grub_net_dev *grub_net_dev_t;
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struct grub_fs;
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struct grub_net
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struct grub_net_card
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{
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/* The net name. */
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const char *name;
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/* The underlying disk device. */
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grub_net_dev_t dev;
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/* The binding filesystem. */
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struct grub_fs *fs;
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/* FIXME: More data would be required, such as an IP address, a mask,
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a gateway, etc. */
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/* Device-specific data. */
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struct grub_net_card *next;
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char *name;
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struct grub_net_card_driver *driver;
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void *data;
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};
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typedef struct grub_net *grub_net_t;
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/* FIXME: How to abstract networks? More consideration is necessary. */
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struct grub_net_network_level_interface;
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typedef union grub_net_network_level_address
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{
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grub_uint32_t ipv4;
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} grub_net_network_level_netaddress_t;
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typedef union grub_net_network_level_netaddress
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{
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struct {
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grub_uint32_t base;
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int masksize;
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} ipv4;
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} grub_net_network_level_address_t;
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typedef enum grub_network_level_protocol_id
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{
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GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4
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} grub_network_level_protocol_id_t;
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struct grub_net_network_level_interface;
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struct grub_net_network_level_protocol
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{
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struct grub_net_network_level_protocol *next;
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char *name;
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grub_network_level_protocol_id_t id;
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grub_err_t (*ntoa) (char *name, grub_net_network_level_address_t *addr);
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char * (*aton) (union grub_net_network_level_address addr);
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grub_err_t (*net_ntoa) (char *name,
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grub_net_network_level_netaddress_t *addr);
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char * (*net_aton) (grub_net_network_level_netaddress_t addr);
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int (* match_net) (grub_net_network_level_netaddress_t net,
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grub_net_network_level_address_t addr);
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grub_err_t (*init) (struct grub_net_network_level_interface *dev);
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grub_err_t (*fini) (struct grub_net_network_level_interface *dev);
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grub_err_t (*send) (struct grub_net_network_level_interface *dev, void *buf,
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grub_size_t buflen);
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grub_size_t (*recv) (struct grub_net_network_level_interface *dev, void *buf,
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grub_size_t buflen);
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};
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struct grub_net_network_level_interface
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{
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struct grub_net_network_level_interface *next;
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char *name;
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/* Underlying protocol. */
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struct grub_net_network_level_protocol *protocol;
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struct grub_net_card *card;
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union grub_net_network_level_address address;
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void *data;
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};
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struct grub_net_route
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{
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struct grub_net_route *next;
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grub_net_network_level_netaddress_t target;
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char *name;
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struct grub_net_network_level_protocol *prot;
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int is_gateway;
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union
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{
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struct grub_net_network_level_interface *interface;
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grub_net_network_level_address_t gw;
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};
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};
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struct grub_net_session;
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struct grub_net_session_level_protocol
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{
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void (*close) (struct grub_net_session *session);
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grub_ssize_t (*recv) (struct grub_net_session *session, void *buf,
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grub_size_t size);
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grub_err_t (*send) (struct grub_net_session *session, void *buf,
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grub_size_t size);
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};
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struct grub_net_session
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{
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struct grub_net_session_level_protocol *protocol;
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void *data;
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};
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static inline void
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grub_net_session_close (struct grub_net_session *session)
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{
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session->protocol->close (session);
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}
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static inline grub_err_t
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grub_net_session_send (struct grub_net_session *session, void *buf,
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grub_size_t size)
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{
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return session->protocol->send (session, buf, size);
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}
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static inline grub_ssize_t
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grub_net_session_recv (struct grub_net_session *session, void *buf,
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grub_size_t size)
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{
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return session->protocol->recv (session, buf, size);
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}
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extern struct grub_net_network_level_interface *grub_net_network_level_interfaces;
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static inline void
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grub_net_network_level_interface_register (struct grub_net_network_level_interface *inter)
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{
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grub_list_push (GRUB_AS_LIST_P (&grub_net_network_level_interfaces),
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GRUB_AS_LIST (inter));
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}
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static inline void
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grub_net_network_level_interface_unregister (struct grub_net_network_level_interface *inter)
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{
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grub_list_remove (GRUB_AS_LIST_P (&grub_net_network_level_interfaces),
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GRUB_AS_LIST (inter));
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}
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#define FOR_NET_NETWORK_LEVEL_INTERFACES(var) for (var = grub_net_network_level_interfaces; var; var = var->next)
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extern struct grub_net_route *grub_net_routes;
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static inline void
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grub_net_route_register (struct grub_net_route *route)
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{
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grub_list_push (GRUB_AS_LIST_P (&grub_net_routes),
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GRUB_AS_LIST (route));
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}
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static inline void
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grub_net_route_unregister (struct grub_net_route *route)
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{
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grub_list_remove (GRUB_AS_LIST_P (&grub_net_routes),
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GRUB_AS_LIST (route));
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}
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#define FOR_NET_ROUTES(var) for (var = grub_net_routes; var; var = var->next)
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extern struct grub_net_card *grub_net_cards;
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static inline void
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grub_net_card_register (struct grub_net_card *card)
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{
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grub_list_push (GRUB_AS_LIST_P (&grub_net_cards),
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GRUB_AS_LIST (card));
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}
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static inline void
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grub_net_card_unregister (struct grub_net_card *card)
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{
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grub_list_remove (GRUB_AS_LIST_P (&grub_net_cards),
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GRUB_AS_LIST (card));
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}
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#define FOR_NET_CARDS(var) for (var = grub_net_cards; var; var = var->next)
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extern struct grub_net_network_level_protocol *grub_net_network_level_protocols;
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static inline void
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grub_net_network_level_protocol_register (struct grub_net_network_level_protocol *prot)
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{
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grub_list_push (GRUB_AS_LIST_P (&grub_net_network_level_protocols),
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GRUB_AS_LIST (prot));
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}
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static inline void
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grub_net_network_level_protocol_unregister (struct grub_net_network_level_protocol *prot)
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{
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grub_list_remove (GRUB_AS_LIST_P (&grub_net_network_level_protocols),
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GRUB_AS_LIST (prot));
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}
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#define FOR_NET_NETWORK_LEVEL_PROTOCOLS(var) for ((var) = grub_net_network_level_protocols; (var); (var) = (var)->next)
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static inline grub_err_t
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grub_net_resolve_address_in_protocol (struct grub_net_network_level_protocol *prot,
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char *name,
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grub_net_network_level_address_t *addr)
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{
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return prot->ntoa (name, addr);
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}
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struct grub_net_session *
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grub_net_open_tcp (char *address, grub_uint16_t port);
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grub_err_t
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grub_net_resolve_address (struct grub_net_network_level_protocol **prot,
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char *name,
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grub_net_network_level_address_t *addr);
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grub_err_t
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grub_net_route_address (grub_net_network_level_address_t addr,
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grub_net_network_level_address_t *gateway,
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struct grub_net_network_level_interface **interf);
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/* Note: Networks are very different from disks, because networks must
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be initialized before used, and the status is persistent. */
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#endif /* ! GRUB_NET_HEADER */
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