network/stack/utility.cpp

104 	uint16* buffer = (uint16*)_buffer;
110 		sum += *buffer++;
117 		sum += *(uint8*)buffer;
120 		ordered[0] = *(uint8*)buffer;
135 checksum(uint8* buffer, size_t length)
137 	return ~compute_checksum(buffer, length);
194 base_fifo_enqueue_buffer(net_fifo* fifo, net_buffer* buffer)
197 		&& fifo->current_bytes + buffer->size > fifo->max_bytes)
200 	list_add_item(&fifo->buffers, buffer);
201 	fifo->current_bytes += buffer->size;
209 fifo_enqueue_buffer(net_fifo* fifo, net_buffer* buffer)
212 	return base_fifo_enqueue_buffer(fifo, buffer);
216 /*!	Gets the first buffer from the FIFO. If there is no buffer, it
219 		MSG_DONTWAIT - ignores the timeout and never wait for a buffer; if your
222 		MSG_PEEK - returns a clone of the buffer and keep the original
237 		net_buffer* buffer = (net_buffer*)list_get_first_item(&fifo->buffers);
238 		if (buffer != NULL) {
240 				// we need to clone the buffer for inspection; we can't give a
241 				// handle to a buffer that we're still using
242 				buffer = gNetBufferModule.clone(buffer, false);
243 				if (buffer == NULL) {
248 				list_remove_item(&fifo->buffers, buffer);
249 				fifo->current_bytes -= buffer->size;
252 			*_buffer = buffer;
265 		// we need to wait until a new buffer becomes available
275 	// eat the buffer, it will get it
289 		net_buffer* buffer = (net_buffer*)list_remove_head_item(&fifo->buffers);
290 		if (buffer == NULL)
293 		gNetBufferModule.free(buffer);
305 	net_buffer *buffer = gNetBufferModule.clone(_buffer, false);
306 	if (buffer == NULL)
311 	status_t status = base_fifo_enqueue_buffer(fifo, buffer);
313 		gNetBufferModule.free(buffer);