haiku/headers/private/net/net_buffer.h

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/*
* Copyright 2006-2010, Haiku, Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef NET_BUFFER_H
#define NET_BUFFER_H
#include <sys/socket.h>
#include <module.h>
#include <util/list.h>
#define NET_BUFFER_MODULE_NAME "network/stack/buffer/v1"
typedef struct net_buffer {
struct list_link link;
struct sockaddr* source;
struct sockaddr* destination;
struct net_interface_address* interface_address;
union {
struct {
uint16 start;
uint16 end;
} fragment;
uint32 sequence;
uint32 offset;
uint32 index;
* Reworked the complete stack to allow more than one address per network interface - this caused quite a number of changes. * Network interfaces, and its addresses are now reference counted (not yet complete, though, InterfaceAddresses need to hold references to their interface as well). * There are two known regressions of this commit that I will fix later: - you cannot remove interfaces anymore - IPv4 multicast was broken anyway, but now it's disabled, too. * Moved a device_interfaces.cpp|h out of interfaces.cpp. * The datalink layer chain is now instantiated per domain per interface, not just per interface anymore. * When a buffer reaches the network layer, it has no known interface yet, ie. the ipv4|6|whatever modules need to set this manually. * Added more debug output, and some new debugger commands, the control option is now printed in clear text. * Added hash_address() function to the address modules. Added "const" to set_to_defaults() where needed. * Fixed net_buffer's restore header functions offset use as reported by Atis. * Improved buffer dump output, use the domain module to print the address if available. * Moved net_buffer::type into the union, as it's not needed by the upper layers anymore. * Moved IPv6 specific code from {add|remove}_default_route() to where it belongs, but disabled it for the time being. * Completely discarded useless ipv4_datagram module. * Added ping6 to the build. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37794 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-07-28 21:38:23 +04:00
int32 type;
};
uint32 flags;
uint32 size;
uint8 protocol;
} net_buffer;
struct ancillary_data_container;
struct net_buffer_module_info {
module_info info;
net_buffer* (*create)(size_t headerSpace);
void (*free)(net_buffer* buffer);
net_buffer* (*duplicate)(net_buffer* from);
net_buffer* (*clone)(net_buffer* from, bool shareFreeSpace);
net_buffer* (*split)(net_buffer* from, uint32 offset);
status_t (*merge)(net_buffer* buffer, net_buffer* with, bool after);
status_t (*prepend_size)(net_buffer* buffer, size_t size,
void** _contiguousBuffer);
status_t (*prepend)(net_buffer* buffer, const void* data,
size_t bytes);
status_t (*append_size)(net_buffer* buffer, size_t size,
void** _contiguousBuffer);
status_t (*append)(net_buffer* buffer, const void* data,
size_t bytes);
status_t (*insert)(net_buffer* buffer, uint32 offset,
const void* data, size_t bytes, uint32 flags);
status_t (*remove)(net_buffer* buffer, uint32 offset,
size_t bytes);
status_t (*remove_header)(net_buffer* buffer, size_t bytes);
status_t (*remove_trailer)(net_buffer* buffer, size_t bytes);
status_t (*trim)(net_buffer* buffer, size_t newSize);
status_t (*append_cloned)(net_buffer* buffer, net_buffer* source,
uint32 offset, size_t bytes);
status_t (*associate_data)(net_buffer* buffer, void* data);
void (*set_ancillary_data)(net_buffer* buffer,
struct ancillary_data_container* container);
struct ancillary_data_container* (*get_ancillary_data)(net_buffer* buffer);
void* (*transfer_ancillary_data)(net_buffer* from,
net_buffer* to);
status_t (*store_header)(net_buffer* buffer);
ssize_t (*stored_header_length)(net_buffer* buffer);
status_t (*restore_header)(net_buffer* buffer, uint32 offset,
void* data, size_t bytes);
status_t (*append_restored_header)(net_buffer* buffer,
net_buffer* source, uint32 offset, size_t bytes);
status_t (*direct_access)(net_buffer* buffer, uint32 offset,
size_t bytes, void** _data);
status_t (*read)(net_buffer* buffer, uint32 offset, void* data,
size_t bytes);
status_t (*write)(net_buffer* buffer, uint32 offset,
const void* data, size_t bytes);
int32 (*checksum)(net_buffer* buffer, uint32 offset, size_t bytes,
bool finalize);
status_t (*get_memory_map)(net_buffer* buffer,
struct iovec* iovecs, uint32 vecCount);
uint32 (*get_iovecs)(net_buffer* buffer,
struct iovec* iovecs, uint32 vecCount);
uint32 (*count_iovecs)(net_buffer* buffer);
void (*swap_addresses)(net_buffer* buffer);
void (*dump)(net_buffer* buffer);
};
#endif // NET_BUFFER_H