51 	uint16_t block;  member
59 tftp_send(int peer, uint16_t *block, struct tftp_stats *ts)  in tftp_send()  argument
70 	*block = 1;  in tftp_send()
77 			tftp_log(LOG_DEBUG, "Sending block %d (window block %d)",  in tftp_send()
78 			    *block, windowblock);  in tftp_send()
81 		window[windowblock].block = *block;  in tftp_send()
92 			n_data = send_data(peer, *block, sendbuffer, size);  in tftp_send()
99 				    "giving up", *block);  in tftp_send()
104 			    *block);  in tftp_send()
107 		/* Only check for ACK for last block in window. */  in tftp_send()
116 						    "giving up", acktry, *block);  in tftp_send()
121 					    acktry, *block);  in tftp_send()
132 					*block = window[0].block;  in tftp_send()
145 				 * Look for the ACKed block in our open  in tftp_send()
149 					if (rp->th_block == window[i].block)  in tftp_send()
172 					*block = window[0].block;  in tftp_send()
182 						    "ACKed block %d",  in tftp_send()
183 						    window[j].block);  in tftp_send()
190 				 * un-ACKed block.  in tftp_send()
204 					*block = window[i + 1].block;  in tftp_send()
214 		oldblock = *block;  in tftp_send()
215 		(*block)++;  in tftp_send()
216 		if (oldblock > *block) {  in tftp_send()
220 				 * tftp client.  Default to rolling block  in tftp_send()
223 				*block = 0;  in tftp_send()
225 				*block = atoi(options[OPT_ROLLOVER].o_request);  in tftp_send()
238  * - It could be that the first block has already arrived while
243 tftp_receive(int peer, uint16_t *block, struct tftp_stats *ts,  in tftp_receive()  argument
261 				n_ack = send_ack(peer, *block);  in tftp_receive()
266 						    "giving up", *block);  in tftp_receive()
271 					    *block);  in tftp_receive()
288 		oldblock = *block;  in tftp_receive()
289 		(*block)++;  in tftp_receive()
290 		if (oldblock > *block) {  in tftp_receive()
294 				 * tftp client.  Default to rolling block  in tftp_receive()
297 				*block = 0;  in tftp_receive()
299 				*block = atoi(options[OPT_ROLLOVER].o_request);  in tftp_receive()
308 				    "Receiving DATA block %d (window block %d)",  in tftp_receive()
309 				    *block, windowblock);  in tftp_receive()
316 					    "Timeout #%d on DATA block %d, "  in tftp_receive()
317 					    "giving up", retry, *block);  in tftp_receive()
322 					    "Timeout #%d on DATA block %d",  in tftp_receive()
323 					    retry, *block);  in tftp_receive()
338 				if (rp->th_block == *block)  in tftp_receive()
350 				if (*block > windowsize)  in tftp_receive()
351 					windowstart = *block - windowsize;  in tftp_receive()
355 				    rp->th_block < *block) {  in tftp_receive()
358 					    "Ignoring duplicate DATA block %d",  in tftp_receive()
366 				    "Expected DATA block %d, got block %d",  in tftp_receive()
367 				    *block, rp->th_block);  in tftp_receive()
373 				*block = oldblock;  in tftp_receive()
379 				    "Expected DATA block, got %s block",  in tftp_receive()
401 		/* Only send ACKs for the last block in the window. */  in tftp_receive()
406 			n_ack = send_ack(peer, *block);  in tftp_receive()
412 					    "giving up", *block);  in tftp_receive()
418 				    *block);  in tftp_receive()
423 				tftp_log(LOG_DEBUG, "Sent ACK for %d", *block);  in tftp_receive()
440 		    rp->th_opcode == DATA &&	/* and got a data block */  in tftp_receive()
441 		    *block == rp->th_block)	/* then my last ack was lost */  in tftp_receive()
442 			send_ack(peer, *block);	/* resend final ack */  in tftp_receive()