network/stack/net_buffer.cpp

160 static status_t remove_header(net_buffer* _buffer, size_t bytes);
161 static status_t remove_trailer(net_buffer* _buffer, size_t bytes);
163 					uint32 offset, size_t bytes);
859 /*!	Tries to allocate \a size bytes from the free space in the header.
1023 /*!	Appends up to \a size bytes from the data of the \a from net_buffer to the
1802 /*!	Removes bytes from the beginning of the buffer.
1805 remove_header(net_buffer* _buffer, size_t bytes)
1809 	T(RemoveHeader(buffer, bytes));
1813 	if (bytes > buffer->size)
1816 	TRACE(("%d: remove_header(buffer %p, %ld bytes)\n", find_thread(NULL),
1817 		buffer, bytes));
1820 	size_t left = bytes;
1860 		node->offset -= bytes;
1864 	buffer->size -= bytes;
1876 /*!	Removes bytes from the end of the buffer.
1879 remove_trailer(net_buffer* buffer, size_t bytes)
1881 	return trim_data(buffer, buffer->size - bytes);
1942 	size_t bytes)
1944 	if (bytes == 0)
1950 		"bytes = %ld)\n", find_thread(NULL), buffer, source, offset, bytes));
1951 	T(AppendCloned(buffer, source, offset, bytes));
1956 	if (source->size < offset + bytes || source->size < offset)
1968 	while (node != NULL && bytes > 0) {
1980 		clone->used = min_c(bytes, node->used - offset);
1991 		bytes -= clone->used;
1997 	if (bytes != 0)
1998 		panic("add_cloned_data() failed, bytes != 0!\n");
2109 restore_header(net_buffer* _buffer, uint32 offset, void* data, size_t bytes)
2116 			|| offset + bytes > buffer->stored_header_length + buffer->size)
2121 		size_t copied = std::min(bytes, buffer->stored_header_length - offset);
2125 		if (copied == bytes)
2129 		bytes -= copied;
2134 	return read_data(_buffer, offset, data, bytes);
2145 	size_t bytes)
2152 			|| offset + bytes > source->stored_header_length + source->size)
2157 		size_t appended = std::min(bytes, source->stored_header_length - offset);
2163 		if (appended == bytes)
2166 		bytes -= appended;
2171 	return append_cloned_data(buffer, source, offset, bytes);
2226 	// Since the maximum buffer size is 65536 bytes, it's impossible
2232 		size_t bytes = min_c(size, node->used - offset);
2235 			sum += __swap_int16(compute_checksum(node->start + offset, bytes));
2237 			sum += compute_checksum(node->start + offset, bytes);
2239 		size -= bytes;