protocols/ipv4/ipv4.cpp

53 	// slots in the fragment packet's hash
55 	// discard fragment after 60 seconds
272 		// invalid fragment
276 	// Search for a position in the list to insert the fragment
282 		if (previous->fragment.start <= start) {
283 			// The new fragment can be inserted after this one
290 	// See if we already have the fragment's data
292 	if (previous != NULL && previous->fragment.start <= start
293 		&& previous->fragment.end >= end) {
294 		// we do, so we can just drop this fragment
306 	if (previous != NULL && previous->fragment.end > start) {
307 		TRACE("    remove header %d bytes", previous->fragment.end - start);
308 		gBufferModule->remove_header(buffer, previous->fragment.end - start);
309 		start = previous->fragment.end;
311 	if (next != NULL && next->fragment.start < end) {
312 		TRACE("    remove trailer %d bytes", next->fragment.start - end);
313 		gBufferModule->remove_trailer(buffer, next->fragment.start - end);
314 		end = next->fragment.start;
322 	if (previous != NULL && previous->fragment.end == start) {
325 		buffer->fragment.start = previous->fragment.start;
326 		buffer->fragment.end = end;
348 	} else if (next != NULL && next->fragment.start == end) {
352 		buffer->fragment.start = start;
353 		buffer->fragment.end = next->fragment.end;
380 	TRACE("    new fragment: %p, bytes %d-%d", buffer, start, end);
382 	buffer->fragment.start = start;
383 	buffer->fragment.end = end;
411 	net_buffer* fragment;
412 	while ((fragment = fFragments.RemoveHead()) != NULL) {
415 			if (to == fragment) {
416 				status = gBufferModule->merge(fragment, buffer, false);
417 				buffer = fragment;
419 				status = gBufferModule->merge(buffer, fragment, true);
423 			buffer = fragment;
447 		// Send error: fragment reassembly time exceeded
551 		// New fragment packet
572 	// Remove header unless this is the first fragment
625 	// Adapt MTU to be a multiple of 8 (fragment offsets can only be specified
644 		TRACE("  send fragment of %ld bytes (%ld bytes left)", fragmentLength,
659 		// copy header to fragment
662 		// send fragment
1459 		// we need to fragment the packet
1663 		// this is a fragment
1671 			// buffer was put into fragment packet
1677 	// Since the buffer might have been changed (reassembled fragment)