TESTS: add a flag --usb so we can clamp all i/o to at most 120k

Add checks for maximum tranfer length to all commands that are limited
by BlockLimits/MTL

test-tool/test_orwrite_beyond_eol.c

@@ -16,6 +16,7 @@
 */
 
 #include <stdio.h>
+#include <alloca.h>
 
 #include <CUnit/CUnit.h>
 
@@ -28,6 +29,7 @@ void
 test_orwrite_beyond_eol(void)
 { 
 	int i, ret;
+	unsigned char *buf = alloca(256 * block_size);
 
 	CHECK_FOR_DATALOSS;
 	CHECK_FOR_SBC;
@@ -35,13 +37,13 @@ test_orwrite_beyond_eol(void)
 	logging(LOG_VERBOSE, LOG_BLANK_LINE);
 	logging(LOG_VERBOSE, "Test ORWRITE 1-256 blocks one block beyond the end");
 	for (i = 1; i <= 256; i++) {
-		unsigned char *buf = malloc(block_size * i);
-
+		if (maximum_transfer_length && maximum_transfer_length < i) {
+			break;
+		}
 		ret = orwrite_lbaoutofrange(iscsic, tgt_lun,
 					    num_blocks + 1 - i,
 					    i * block_size, block_size,
 					    0, 0, 0, 0, 0, buf);
-		free(buf);
 		if (ret == -2) {
 			logging(LOG_NORMAL, "[SKIPPED] ORWRITE is not implemented.");
 			CU_PASS("ORWRITE is not implemented.");
@@ -53,39 +55,39 @@ test_orwrite_beyond_eol(void)
 
 	logging(LOG_VERBOSE, "Test ORWRITE 1-256 blocks at LBA==2^63");
 	for (i = 1; i <= 256; i++) {
-		unsigned char *buf = malloc(block_size * i);
-	  
+		if (maximum_transfer_length && maximum_transfer_length < i) {
+			break;
+		}
 		ret = orwrite_lbaoutofrange(iscsic, tgt_lun,
 					    0x8000000000000000,
 					    i * block_size, block_size,
 					    0, 0, 0, 0, 0, buf);
-		free(buf);
 		CU_ASSERT_EQUAL(ret, 0);
 	}
 
 
 	logging(LOG_VERBOSE, "Test ORWRITE 1-256 blocks at LBA==-1");
 	for (i = 1; i <= 256; i++) {
-		unsigned char *buf = malloc(block_size * i);
-
+		if (maximum_transfer_length && maximum_transfer_length < i) {
+			break;
+		}
 		ret = orwrite_lbaoutofrange(iscsic, tgt_lun,
 					    -1,
 					    i * block_size, block_size,
 					    0, 0, 0, 0, 0, buf);
-		free(buf);
 		CU_ASSERT_EQUAL(ret, 0);
 	}
 
 
 	logging(LOG_VERBOSE, "Test ORWRITE 2-256 blocks all but one block beyond the end");
 	for (i = 2; i <= 256; i++) {
-		unsigned char *buf = malloc(block_size * i);
-
+		if (maximum_transfer_length && maximum_transfer_length < i) {
+			break;
+		}
 		ret = orwrite_lbaoutofrange(iscsic, tgt_lun,
 					    num_blocks - 1,
 					    i * block_size, block_size,
 					    0, 0, 0, 0, 0, buf);
-		free(buf);
 		CU_ASSERT_EQUAL(ret, 0);
 	}
 }