[PATCH net 4/5] net: microchip: sparx5: Fix possible memory leaks in test_vcap_xn_rule_creator()

[kernel test robot]

Hi Jinjie,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Jinjie-Ruan/net-microchip-sparx5-Fix-memory-leak-for-vcap_api_rule_add_keyvalue_test/20230908-120533
base:   net/main
patch link:    https://lore.kernel.org/r/20230908040011.2620468-5-ruanjinjie%40huawei.com
patch subject: [PATCH net 4/5] net: microchip: sparx5: Fix possible memory leaks in test_vcap_xn_rule_creator()
config: parisc-allyesconfig (https://download.01.org/0day-ci/archive/20230908/202309081527.MUW3tfqy-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230908/202309081527.MUW3tfqy-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309081527.MUW3tfqy-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/net/ethernet/microchip/vcap/vcap_api.c:3584:
>> drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c:246:6: warning: no previous prototype for 'test_vcap_xn_rule_creator' [-Wmissing-prototypes]
     246 | void test_vcap_xn_rule_creator(struct kunit *test, int cid, enum vcap_user user,
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~


vim +/test_vcap_xn_rule_creator +246 drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c

   244	
   245	/* Helper function to create a rule of a specific size */
 > 246	void test_vcap_xn_rule_creator(struct kunit *test, int cid, enum vcap_user user,
   247				       u16 priority,
   248				       int id, int size, int expected_addr)
   249	{
   250		struct vcap_rule *rule;
   251		struct vcap_rule_internal *ri;
   252		enum vcap_keyfield_set keyset = VCAP_KFS_NO_VALUE;
   253		enum vcap_actionfield_set actionset = VCAP_AFS_NO_VALUE;
   254		int ret;
   255	
   256		/* init before testing */
   257		memset(test_updateaddr, 0, sizeof(test_updateaddr));
   258		test_updateaddridx = 0;
   259		test_move_addr = 0;
   260		test_move_offset = 0;
   261		test_move_count = 0;
   262	
   263		switch (size) {
   264		case 2:
   265			keyset = VCAP_KFS_ETAG;
   266			actionset = VCAP_AFS_CLASS_REDUCED;
   267			break;
   268		case 3:
   269			keyset = VCAP_KFS_PURE_5TUPLE_IP4;
   270			actionset = VCAP_AFS_CLASSIFICATION;
   271			break;
   272		case 6:
   273			keyset = VCAP_KFS_NORMAL_5TUPLE_IP4;
   274			actionset = VCAP_AFS_CLASSIFICATION;
   275			break;
   276		case 12:
   277			keyset = VCAP_KFS_NORMAL_7TUPLE;
   278			actionset = VCAP_AFS_FULL;
   279			break;
   280		default:
   281			break;
   282		}
   283	
   284		/* Check that a valid size was used */
   285		KUNIT_ASSERT_NE(test, VCAP_KFS_NO_VALUE, keyset);
   286	
   287		/* Allocate the rule */
   288		rule = vcap_alloc_rule(&test_vctrl, &test_netdev, cid, user, priority,
   289				       id);
   290		KUNIT_EXPECT_PTR_NE(test, NULL, rule);
   291	
   292		ri = (struct vcap_rule_internal *)rule;
   293	
   294		/* Override rule keyset */
   295		ret = vcap_set_rule_set_keyset(rule, keyset);
   296	
   297		/* Add rule actions : there must be at least one action */
   298		ret = vcap_rule_add_action_u32(rule, VCAP_AF_ISDX_VAL, 0);
   299	
   300		/* Override rule actionset */
   301		ret = vcap_set_rule_set_actionset(rule, actionset);
   302	
   303		ret = vcap_val_rule(rule, ETH_P_ALL);
   304		KUNIT_EXPECT_EQ(test, 0, ret);
   305		KUNIT_EXPECT_EQ(test, keyset, rule->keyset);
   306		KUNIT_EXPECT_EQ(test, actionset, rule->actionset);
   307		KUNIT_EXPECT_EQ(test, size, ri->size);
   308	
   309		/* Add rule with write callback */
   310		ret = vcap_add_rule(rule);
   311		KUNIT_EXPECT_EQ(test, 0, ret);
   312		KUNIT_EXPECT_EQ(test, expected_addr, ri->addr);
   313		vcap_free_rule(rule);
   314	}
   315	

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