* 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"
enum net_buffer_flags {
NET_BUFFER_L3_CHECKSUM_VALID = (1 << 0),
NET_BUFFER_L4_CHECKSUM_VALID = (1 << 1),
};
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;
int32 type;
};
uint32 msg_flags;
uint32 size;
uint8 protocol;
uint16 buffer_flags;
} 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, size_t offset, void* data,
size_t bytes);
status_t (*write)(net_buffer* buffer, size_t 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
