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Date: Fri, 30 Jun 2023 06:46:30 +0800
From: kernel test robot <lkp@...el.com>
To: Eric Garver <eric@...ver.life>, netdev@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
dev@...nvswitch.org, Pravin B Shelar <pshelar@....org>,
Ilya Maximets <i.maximets@....org>
Subject: Re: [PATCH net-next 2/2] net: openvswitch: add drop action
Hi Eric,
kernel test robot noticed the following build errors:
[auto build test ERROR on net-next/main]
url: https://github.com/intel-lab-lkp/linux/commits/Eric-Garver/net-openvswitch-add-drop-reasons/20230630-043307
base: net-next/main
patch link: https://lore.kernel.org/r/20230629203005.2137107-3-eric%40garver.life
patch subject: [PATCH net-next 2/2] net: openvswitch: add drop action
config: mips-randconfig-r036-20230629 (https://download.01.org/0day-ci/archive/20230630/202306300645.towwST4X-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce: (https://download.01.org/0day-ci/archive/20230630/202306300645.towwST4X-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306300645.towwST4X-lkp@intel.com/
All errors (new ones prefixed by >>):
>> net/openvswitch/actions.c:1483:4: error: expected expression
u32 reason = nla_get_u32(a);
^
>> net/openvswitch/actions.c:1485:4: error: use of undeclared identifier 'reason'
reason |= SKB_DROP_REASON_SUBSYS_OPENVSWITCH <<
^
net/openvswitch/actions.c:1488:8: error: use of undeclared identifier 'reason'
if (reason == OVS_XLATE_OK)
^
net/openvswitch/actions.c:1491:26: error: use of undeclared identifier 'reason'
kfree_skb_reason(skb, reason);
^
4 errors generated.
vim +1483 net/openvswitch/actions.c
1285
1286 /* Execute a list of actions against 'skb'. */
1287 static int do_execute_actions(struct datapath *dp, struct sk_buff *skb,
1288 struct sw_flow_key *key,
1289 const struct nlattr *attr, int len)
1290 {
1291 const struct nlattr *a;
1292 int rem;
1293
1294 for (a = attr, rem = len; rem > 0;
1295 a = nla_next(a, &rem)) {
1296 int err = 0;
1297
1298 if (trace_ovs_do_execute_action_enabled())
1299 trace_ovs_do_execute_action(dp, skb, key, a, rem);
1300
1301 switch (nla_type(a)) {
1302 case OVS_ACTION_ATTR_OUTPUT: {
1303 int port = nla_get_u32(a);
1304 struct sk_buff *clone;
1305
1306 /* Every output action needs a separate clone
1307 * of 'skb', In case the output action is the
1308 * last action, cloning can be avoided.
1309 */
1310 if (nla_is_last(a, rem)) {
1311 do_output(dp, skb, port, key);
1312 /* 'skb' has been used for output.
1313 */
1314 return 0;
1315 }
1316
1317 clone = skb_clone(skb, GFP_ATOMIC);
1318 if (clone)
1319 do_output(dp, clone, port, key);
1320 OVS_CB(skb)->cutlen = 0;
1321 break;
1322 }
1323
1324 case OVS_ACTION_ATTR_TRUNC: {
1325 struct ovs_action_trunc *trunc = nla_data(a);
1326
1327 if (skb->len > trunc->max_len)
1328 OVS_CB(skb)->cutlen = skb->len - trunc->max_len;
1329 break;
1330 }
1331
1332 case OVS_ACTION_ATTR_USERSPACE:
1333 output_userspace(dp, skb, key, a, attr,
1334 len, OVS_CB(skb)->cutlen);
1335 OVS_CB(skb)->cutlen = 0;
1336 break;
1337
1338 case OVS_ACTION_ATTR_HASH:
1339 execute_hash(skb, key, a);
1340 break;
1341
1342 case OVS_ACTION_ATTR_PUSH_MPLS: {
1343 struct ovs_action_push_mpls *mpls = nla_data(a);
1344
1345 err = push_mpls(skb, key, mpls->mpls_lse,
1346 mpls->mpls_ethertype, skb->mac_len);
1347 break;
1348 }
1349 case OVS_ACTION_ATTR_ADD_MPLS: {
1350 struct ovs_action_add_mpls *mpls = nla_data(a);
1351 __u16 mac_len = 0;
1352
1353 if (mpls->tun_flags & OVS_MPLS_L3_TUNNEL_FLAG_MASK)
1354 mac_len = skb->mac_len;
1355
1356 err = push_mpls(skb, key, mpls->mpls_lse,
1357 mpls->mpls_ethertype, mac_len);
1358 break;
1359 }
1360 case OVS_ACTION_ATTR_POP_MPLS:
1361 err = pop_mpls(skb, key, nla_get_be16(a));
1362 break;
1363
1364 case OVS_ACTION_ATTR_PUSH_VLAN:
1365 err = push_vlan(skb, key, nla_data(a));
1366 break;
1367
1368 case OVS_ACTION_ATTR_POP_VLAN:
1369 err = pop_vlan(skb, key);
1370 break;
1371
1372 case OVS_ACTION_ATTR_RECIRC: {
1373 bool last = nla_is_last(a, rem);
1374
1375 err = execute_recirc(dp, skb, key, a, last);
1376 if (last) {
1377 /* If this is the last action, the skb has
1378 * been consumed or freed.
1379 * Return immediately.
1380 */
1381 return err;
1382 }
1383 break;
1384 }
1385
1386 case OVS_ACTION_ATTR_SET:
1387 err = execute_set_action(skb, key, nla_data(a));
1388 break;
1389
1390 case OVS_ACTION_ATTR_SET_MASKED:
1391 case OVS_ACTION_ATTR_SET_TO_MASKED:
1392 err = execute_masked_set_action(skb, key, nla_data(a));
1393 break;
1394
1395 case OVS_ACTION_ATTR_SAMPLE: {
1396 bool last = nla_is_last(a, rem);
1397
1398 err = sample(dp, skb, key, a, last);
1399 if (last)
1400 return err;
1401
1402 break;
1403 }
1404
1405 case OVS_ACTION_ATTR_CT:
1406 if (!is_flow_key_valid(key)) {
1407 err = ovs_flow_key_update(skb, key);
1408 if (err)
1409 return err;
1410 }
1411
1412 err = ovs_ct_execute(ovs_dp_get_net(dp), skb, key,
1413 nla_data(a));
1414
1415 /* Hide stolen IP fragments from user space. */
1416 if (err)
1417 return err == -EINPROGRESS ? 0 : err;
1418 break;
1419
1420 case OVS_ACTION_ATTR_CT_CLEAR:
1421 err = ovs_ct_clear(skb, key);
1422 break;
1423
1424 case OVS_ACTION_ATTR_PUSH_ETH:
1425 err = push_eth(skb, key, nla_data(a));
1426 break;
1427
1428 case OVS_ACTION_ATTR_POP_ETH:
1429 err = pop_eth(skb, key);
1430 break;
1431
1432 case OVS_ACTION_ATTR_PUSH_NSH: {
1433 u8 buffer[NSH_HDR_MAX_LEN];
1434 struct nshhdr *nh = (struct nshhdr *)buffer;
1435
1436 err = nsh_hdr_from_nlattr(nla_data(a), nh,
1437 NSH_HDR_MAX_LEN);
1438 if (unlikely(err))
1439 break;
1440 err = push_nsh(skb, key, nh);
1441 break;
1442 }
1443
1444 case OVS_ACTION_ATTR_POP_NSH:
1445 err = pop_nsh(skb, key);
1446 break;
1447
1448 case OVS_ACTION_ATTR_METER:
1449 if (ovs_meter_execute(dp, skb, key, nla_get_u32(a))) {
1450 consume_skb(skb);
1451 return 0;
1452 }
1453 break;
1454
1455 case OVS_ACTION_ATTR_CLONE: {
1456 bool last = nla_is_last(a, rem);
1457
1458 err = clone(dp, skb, key, a, last);
1459 if (last)
1460 return err;
1461
1462 break;
1463 }
1464
1465 case OVS_ACTION_ATTR_CHECK_PKT_LEN: {
1466 bool last = nla_is_last(a, rem);
1467
1468 err = execute_check_pkt_len(dp, skb, key, a, last);
1469 if (last)
1470 return err;
1471
1472 break;
1473 }
1474
1475 case OVS_ACTION_ATTR_DEC_TTL:
1476 err = execute_dec_ttl(skb, key);
1477 if (err == -EHOSTUNREACH)
1478 return dec_ttl_exception_handler(dp, skb,
1479 key, a);
1480 break;
1481
1482 case OVS_ACTION_ATTR_DROP:
> 1483 u32 reason = nla_get_u32(a);
1484
> 1485 reason |= SKB_DROP_REASON_SUBSYS_OPENVSWITCH <<
1486 SKB_DROP_REASON_SUBSYS_SHIFT;
1487
1488 if (reason == OVS_XLATE_OK)
1489 break;
1490
1491 kfree_skb_reason(skb, reason);
1492 return 0;
1493 }
1494
1495 if (unlikely(err)) {
1496 kfree_skb(skb);
1497 return err;
1498 }
1499 }
1500
1501 consume_skb(skb);
1502 return 0;
1503 }
1504
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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