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_writeverify10_beyond_eol.c

@@ -16,6 +16,7 @@
 */
 
 #include <stdio.h>
+#include <alloca.h>
 
 #include <CUnit/CUnit.h>
 
@@ -28,6 +29,7 @@ void
 test_writeverify10_beyond_eol(void)
 { 
 	int i, ret;
+	unsigned char *buf = alloca(256 * block_size);
 
 	CHECK_FOR_DATALOSS;
 
@@ -39,12 +41,12 @@ test_writeverify10_beyond_eol(void)
 	logging(LOG_VERBOSE, LOG_BLANK_LINE);
 	logging(LOG_VERBOSE, "Test WRITEVERIFY10 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 = writeverify10_lbaoutofrange(iscsic, tgt_lun, num_blocks + 1 - i,
 						  i * block_size, block_size,
 						  0, 0, 0, 0, buf);
-		free(buf);
 		if (ret == -2) {
 			logging(LOG_NORMAL, "[SKIPPED] WRITE1VERIFY10 is not implemented.");
 			CU_PASS("WRITEVERIFY10 is not implemented.");
@@ -56,35 +58,35 @@ test_writeverify10_beyond_eol(void)
 
 	logging(LOG_VERBOSE, "Test WRITEVERIFY10 1-256 blocks at LBA==2^31");
 	for (i = 1; i <= 256; i++) {
-		unsigned char *buf = malloc(block_size * i);
-	  
+		if (maximum_transfer_length && maximum_transfer_length < i) {
+			break;
+		}
 		ret = writeverify10_lbaoutofrange(iscsic, tgt_lun, 0x80000000,
 					   i * block_size, block_size,
 					   0, 0, 0, 0, buf);
-		free(buf);
 		CU_ASSERT_EQUAL(ret, 0);
 	}
 
 
 	logging(LOG_VERBOSE, "Test WRITEVERIFY10 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 = writeverify10_lbaoutofrange(iscsic, tgt_lun, -1, i * block_size,
 						  block_size, 0, 0, 0, 0, buf);
-		free(buf);
 		CU_ASSERT_EQUAL(ret, 0);
 	}
 
 
 	logging(LOG_VERBOSE, "Test WRITEVERIFY10 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 = writeverify10_lbaoutofrange(iscsic, tgt_lun, num_blocks - 1,
 						  i * block_size, block_size,
 						  0, 0, 0, 0, buf);
-		free(buf);
 		CU_ASSERT_EQUAL(ret, 0);
 	}
 }