summaryrefslogtreecommitdiff
path: root/lib/librte_eventdev/rte_event_eth_rx_adapter.c
blob: e01d61b24daf90da8e4d77a1e88cc15696b982bc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2017 Intel Corporation.
 * All rights reserved.
 */
#if defined(LINUX)
#include <sys/epoll.h>
#endif
#include <unistd.h>

#include <rte_cycles.h>
#include <rte_common.h>
#include <rte_dev.h>
#include <rte_errno.h>
#include <rte_ethdev.h>
#include <rte_log.h>
#include <rte_malloc.h>
#include <rte_service_component.h>
#include <rte_thash.h>
#include <rte_interrupts.h>

#include "rte_eventdev.h"
#include "rte_eventdev_pmd.h"
#include "rte_event_eth_rx_adapter.h"

#define BATCH_SIZE		32
#define BLOCK_CNT_THRESHOLD	10
#define ETH_EVENT_BUFFER_SIZE	(4*BATCH_SIZE)

#define ETH_RX_ADAPTER_SERVICE_NAME_LEN	32
#define ETH_RX_ADAPTER_MEM_NAME_LEN	32

#define RSS_KEY_SIZE	40
/* value written to intr thread pipe to signal thread exit */
#define ETH_BRIDGE_INTR_THREAD_EXIT	1
/* Sentinel value to detect initialized file handle */
#define INIT_FD		-1

/*
 * Used to store port and queue ID of interrupting Rx queue
 */
union queue_data {
	RTE_STD_C11
	void *ptr;
	struct {
		uint16_t port;
		uint16_t queue;
	};
};

/*
 * There is an instance of this struct per polled Rx queue added to the
 * adapter
 */
struct eth_rx_poll_entry {
	/* Eth port to poll */
	uint16_t eth_dev_id;
	/* Eth rx queue to poll */
	uint16_t eth_rx_qid;
};

/* Instance per adapter */
struct rte_eth_event_enqueue_buffer {
	/* Count of events in this buffer */
	uint16_t count;
	/* Array of events in this buffer */
	struct rte_event events[ETH_EVENT_BUFFER_SIZE];
};

struct rte_event_eth_rx_adapter {
	/* RSS key */
	uint8_t rss_key_be[RSS_KEY_SIZE];
	/* Event device identifier */
	uint8_t eventdev_id;
	/* Per ethernet device structure */
	struct eth_device_info *eth_devices;
	/* Event port identifier */
	uint8_t event_port_id;
	/* Lock to serialize config updates with service function */
	rte_spinlock_t rx_lock;
	/* Max mbufs processed in any service function invocation */
	uint32_t max_nb_rx;
	/* Receive queues that need to be polled */
	struct eth_rx_poll_entry *eth_rx_poll;
	/* Size of the eth_rx_poll array */
	uint16_t num_rx_polled;
	/* Weighted round robin schedule */
	uint32_t *wrr_sched;
	/* wrr_sched[] size */
	uint32_t wrr_len;
	/* Next entry in wrr[] to begin polling */
	uint32_t wrr_pos;
	/* Event burst buffer */
	struct rte_eth_event_enqueue_buffer event_enqueue_buffer;
	/* Per adapter stats */
	struct rte_event_eth_rx_adapter_stats stats;
	/* Block count, counts up to BLOCK_CNT_THRESHOLD */
	uint16_t enq_block_count;
	/* Block start ts */
	uint64_t rx_enq_block_start_ts;
	/* epoll fd used to wait for Rx interrupts */
	int epd;
	/* Num of interrupt driven interrupt queues */
	uint32_t num_rx_intr;
	/* Used to send <dev id, queue id> of interrupting Rx queues from
	 * the interrupt thread to the Rx thread
	 */
	struct rte_ring *intr_ring;
	/* Rx Queue data (dev id, queue id) for the last non-empty
	 * queue polled
	 */
	union queue_data qd;
	/* queue_data is valid */
	int qd_valid;
	/* Interrupt ring lock, synchronizes Rx thread
	 * and interrupt thread
	 */
	rte_spinlock_t intr_ring_lock;
	/* event array passed to rte_poll_wait */
	struct rte_epoll_event *epoll_events;
	/* Count of interrupt vectors in use */
	uint32_t num_intr_vec;
	/* Thread blocked on Rx interrupts */
	pthread_t rx_intr_thread;
	/* Configuration callback for rte_service configuration */
	rte_event_eth_rx_adapter_conf_cb conf_cb;
	/* Configuration callback argument */
	void *conf_arg;
	/* Set if  default_cb is being used */
	int default_cb_arg;
	/* Service initialization state */
	uint8_t service_inited;
	/* Total count of Rx queues in adapter */
	uint32_t nb_queues;
	/* Memory allocation name */
	char mem_name[ETH_RX_ADAPTER_MEM_NAME_LEN];
	/* Socket identifier cached from eventdev */
	int socket_id;
	/* Per adapter EAL service */
	uint32_t service_id;
	/* Adapter started flag */
	uint8_t rxa_started;
	/* Adapter ID */
	uint8_t id;
} __rte_cache_aligned;

/* Per eth device */
struct eth_device_info {
	struct rte_eth_dev *dev;
	struct eth_rx_queue_info *rx_queue;
	/* Rx callback */
	rte_event_eth_rx_adapter_cb_fn cb_fn;
	/* Rx callback argument */
	void *cb_arg;
	/* Set if ethdev->eventdev packet transfer uses a
	 * hardware mechanism
	 */
	uint8_t internal_event_port;
	/* Set if the adapter is processing rx queues for
	 * this eth device and packet processing has been
	 * started, allows for the code to know if the PMD
	 * rx_adapter_stop callback needs to be invoked
	 */
	uint8_t dev_rx_started;
	/* Number of queues added for this device */
	uint16_t nb_dev_queues;
	/* Number of poll based queues
	 * If nb_rx_poll > 0, the start callback will
	 * be invoked if not already invoked
	 */
	uint16_t nb_rx_poll;
	/* Number of interrupt based queues
	 * If nb_rx_intr > 0, the start callback will
	 * be invoked if not already invoked.
	 */
	uint16_t nb_rx_intr;
	/* Number of queues that use the shared interrupt */
	uint16_t nb_shared_intr;
	/* sum(wrr(q)) for all queues within the device
	 * useful when deleting all device queues
	 */
	uint32_t wrr_len;
	/* Intr based queue index to start polling from, this is used
	 * if the number of shared interrupts is non-zero
	 */
	uint16_t next_q_idx;
	/* Intr based queue indices */
	uint16_t *intr_queue;
	/* device generates per Rx queue interrupt for queue index
	 * for queue indices < RTE_MAX_RXTX_INTR_VEC_ID - 1
	 */
	int multi_intr_cap;
	/* shared interrupt enabled */
	int shared_intr_enabled;
};

/* Per Rx queue */
struct eth_rx_queue_info {
	int queue_enabled;	/* True if added */
	int intr_enabled;
	uint16_t wt;		/* Polling weight */
	uint8_t event_queue_id;	/* Event queue to enqueue packets to */
	uint8_t sched_type;	/* Sched type for events */
	uint8_t priority;	/* Event priority */
	uint32_t flow_id;	/* App provided flow identifier */
	uint32_t flow_id_mask;	/* Set to ~0 if app provides flow id else 0 */
};

static struct rte_event_eth_rx_adapter **event_eth_rx_adapter;

static inline int
rxa_validate_id(uint8_t id)
{
	return id < RTE_EVENT_ETH_RX_ADAPTER_MAX_INSTANCE;
}

#define RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, retval) do { \
	if (!rxa_validate_id(id)) { \
		RTE_EDEV_LOG_ERR("Invalid eth Rx adapter id = %d\n", id); \
		return retval; \
	} \
} while (0)

static inline int
rxa_sw_adapter_queue_count(struct rte_event_eth_rx_adapter *rx_adapter)
{
	return rx_adapter->num_rx_polled + rx_adapter->num_rx_intr;
}

/* Greatest common divisor */
static uint16_t rxa_gcd_u16(uint16_t a, uint16_t b)
{
	uint16_t r = a % b;

	return r ? rxa_gcd_u16(b, r) : b;
}

/* Returns the next queue in the polling sequence
 *
 * http://kb.linuxvirtualserver.org/wiki/Weighted_Round-Robin_Scheduling
 */
static int
rxa_wrr_next(struct rte_event_eth_rx_adapter *rx_adapter,
	 unsigned int n, int *cw,
	 struct eth_rx_poll_entry *eth_rx_poll, uint16_t max_wt,
	 uint16_t gcd, int prev)
{
	int i = prev;
	uint16_t w;

	while (1) {
		uint16_t q;
		uint16_t d;

		i = (i + 1) % n;
		if (i == 0) {
			*cw = *cw - gcd;
			if (*cw <= 0)
				*cw = max_wt;
		}

		q = eth_rx_poll[i].eth_rx_qid;
		d = eth_rx_poll[i].eth_dev_id;
		w = rx_adapter->eth_devices[d].rx_queue[q].wt;

		if ((int)w >= *cw)
			return i;
	}
}

static inline int
rxa_shared_intr(struct eth_device_info *dev_info,
	int rx_queue_id)
{
	int multi_intr_cap;

	if (dev_info->dev->intr_handle == NULL)
		return 0;

	multi_intr_cap = rte_intr_cap_multiple(dev_info->dev->intr_handle);
	return !multi_intr_cap ||
		rx_queue_id >= RTE_MAX_RXTX_INTR_VEC_ID - 1;
}

static inline int
rxa_intr_queue(struct eth_device_info *dev_info,
	int rx_queue_id)
{
	struct eth_rx_queue_info *queue_info;

	queue_info = &dev_info->rx_queue[rx_queue_id];
	return dev_info->rx_queue &&
		!dev_info->internal_event_port &&
		queue_info->queue_enabled && queue_info->wt == 0;
}

static inline int
rxa_polled_queue(struct eth_device_info *dev_info,
	int rx_queue_id)
{
	struct eth_rx_queue_info *queue_info;

	queue_info = &dev_info->rx_queue[rx_queue_id];
	return !dev_info->internal_event_port &&
		dev_info->rx_queue &&
		queue_info->queue_enabled && queue_info->wt != 0;
}

/* Calculate change in number of vectors after Rx queue ID is add/deleted */
static int
rxa_nb_intr_vect(struct eth_device_info *dev_info, int rx_queue_id, int add)
{
	uint16_t i;
	int n, s;
	uint16_t nbq;

	nbq = dev_info->dev->data->nb_rx_queues;
	n = 0; /* non shared count */
	s = 0; /* shared count */

	if (rx_queue_id == -1) {
		for (i = 0; i < nbq; i++) {
			if (!rxa_shared_intr(dev_info, i))
				n += add ? !rxa_intr_queue(dev_info, i) :
					rxa_intr_queue(dev_info, i);
			else
				s += add ? !rxa_intr_queue(dev_info, i) :
					rxa_intr_queue(dev_info, i);
		}

		if (s > 0) {
			if ((add && dev_info->nb_shared_intr == 0) ||
				(!add && dev_info->nb_shared_intr))
				n += 1;
		}
	} else {
		if (!rxa_shared_intr(dev_info, rx_queue_id))
			n = add ? !rxa_intr_queue(dev_info, rx_queue_id) :
				rxa_intr_queue(dev_info, rx_queue_id);
		else
			n = add ? !dev_info->nb_shared_intr :
				dev_info->nb_shared_intr == 1;
	}

	return add ? n : -n;
}

/* Calculate nb_rx_intr after deleting interrupt mode rx queues
 */
static void
rxa_calc_nb_post_intr_del(struct rte_event_eth_rx_adapter *rx_adapter,
			struct eth_device_info *dev_info,
			int rx_queue_id,
			uint32_t *nb_rx_intr)
{
	uint32_t intr_diff;

	if (rx_queue_id == -1)
		intr_diff = dev_info->nb_rx_intr;
	else
		intr_diff = rxa_intr_queue(dev_info, rx_queue_id);

	*nb_rx_intr = rx_adapter->num_rx_intr - intr_diff;
}

/* Calculate nb_rx_* after adding interrupt mode rx queues, newly added
 * interrupt queues could currently be poll mode Rx queues
 */
static void
rxa_calc_nb_post_add_intr(struct rte_event_eth_rx_adapter *rx_adapter,
			struct eth_device_info *dev_info,
			int rx_queue_id,
			uint32_t *nb_rx_poll,
			uint32_t *nb_rx_intr,
			uint32_t *nb_wrr)
{
	uint32_t intr_diff;
	uint32_t poll_diff;
	uint32_t wrr_len_diff;

	if (rx_queue_id == -1) {
		intr_diff = dev_info->dev->data->nb_rx_queues -
						dev_info->nb_rx_intr;
		poll_diff = dev_info->nb_rx_poll;
		wrr_len_diff = dev_info->wrr_len;
	} else {
		intr_diff = !rxa_intr_queue(dev_info, rx_queue_id);
		poll_diff = rxa_polled_queue(dev_info, rx_queue_id);
		wrr_len_diff = poll_diff ? dev_info->rx_queue[rx_queue_id].wt :
					0;
	}

	*nb_rx_intr = rx_adapter->num_rx_intr + intr_diff;
	*nb_rx_poll = rx_adapter->num_rx_polled - poll_diff;
	*nb_wrr = rx_adapter->wrr_len - wrr_len_diff;
}

/* Calculate size of the eth_rx_poll and wrr_sched arrays
 * after deleting poll mode rx queues
 */
static void
rxa_calc_nb_post_poll_del(struct rte_event_eth_rx_adapter *rx_adapter,
			struct eth_device_info *dev_info,
			int rx_queue_id,
			uint32_t *nb_rx_poll,
			uint32_t *nb_wrr)
{
	uint32_t poll_diff;
	uint32_t wrr_len_diff;

	if (rx_queue_id == -1) {
		poll_diff = dev_info->nb_rx_poll;
		wrr_len_diff = dev_info->wrr_len;
	} else {
		poll_diff = rxa_polled_queue(dev_info, rx_queue_id);
		wrr_len_diff = poll_diff ? dev_info->rx_queue[rx_queue_id].wt :
					0;
	}

	*nb_rx_poll = rx_adapter->num_rx_polled - poll_diff;
	*nb_wrr = rx_adapter->wrr_len - wrr_len_diff;
}

/* Calculate nb_rx_* after adding poll mode rx queues
 */
static void
rxa_calc_nb_post_add_poll(struct rte_event_eth_rx_adapter *rx_adapter,
			struct eth_device_info *dev_info,
			int rx_queue_id,
			uint16_t wt,
			uint32_t *nb_rx_poll,
			uint32_t *nb_rx_intr,
			uint32_t *nb_wrr)
{
	uint32_t intr_diff;
	uint32_t poll_diff;
	uint32_t wrr_len_diff;

	if (rx_queue_id == -1) {
		intr_diff = dev_info->nb_rx_intr;
		poll_diff = dev_info->dev->data->nb_rx_queues -
						dev_info->nb_rx_poll;
		wrr_len_diff = wt*dev_info->dev->data->nb_rx_queues
				- dev_info->wrr_len;
	} else {
		intr_diff = rxa_intr_queue(dev_info, rx_queue_id);
		poll_diff = !rxa_polled_queue(dev_info, rx_queue_id);
		wrr_len_diff = rxa_polled_queue(dev_info, rx_queue_id) ?
				wt - dev_info->rx_queue[rx_queue_id].wt :
				wt;
	}

	*nb_rx_poll = rx_adapter->num_rx_polled + poll_diff;
	*nb_rx_intr = rx_adapter->num_rx_intr - intr_diff;
	*nb_wrr = rx_adapter->wrr_len + wrr_len_diff;
}

/* Calculate nb_rx_* after adding rx_queue_id */
static void
rxa_calc_nb_post_add(struct rte_event_eth_rx_adapter *rx_adapter,
		struct eth_device_info *dev_info,
		int rx_queue_id,
		uint16_t wt,
		uint32_t *nb_rx_poll,
		uint32_t *nb_rx_intr,
		uint32_t *nb_wrr)
{
	if (wt != 0)
		rxa_calc_nb_post_add_poll(rx_adapter, dev_info, rx_queue_id,
					wt, nb_rx_poll, nb_rx_intr, nb_wrr);
	else
		rxa_calc_nb_post_add_intr(rx_adapter, dev_info, rx_queue_id,
					nb_rx_poll, nb_rx_intr, nb_wrr);
}

/* Calculate nb_rx_* after deleting rx_queue_id */
static void
rxa_calc_nb_post_del(struct rte_event_eth_rx_adapter *rx_adapter,
		struct eth_device_info *dev_info,
		int rx_queue_id,
		uint32_t *nb_rx_poll,
		uint32_t *nb_rx_intr,
		uint32_t *nb_wrr)
{
	rxa_calc_nb_post_poll_del(rx_adapter, dev_info, rx_queue_id, nb_rx_poll,
				nb_wrr);
	rxa_calc_nb_post_intr_del(rx_adapter, dev_info, rx_queue_id,
				nb_rx_intr);
}

/*
 * Allocate the rx_poll array
 */
static struct eth_rx_poll_entry *
rxa_alloc_poll(struct rte_event_eth_rx_adapter *rx_adapter,
	uint32_t num_rx_polled)
{
	size_t len;

	len  = RTE_ALIGN(num_rx_polled * sizeof(*rx_adapter->eth_rx_poll),
							RTE_CACHE_LINE_SIZE);
	return  rte_zmalloc_socket(rx_adapter->mem_name,
				len,
				RTE_CACHE_LINE_SIZE,
				rx_adapter->socket_id);
}

/*
 * Allocate the WRR array
 */
static uint32_t *
rxa_alloc_wrr(struct rte_event_eth_rx_adapter *rx_adapter, int nb_wrr)
{
	size_t len;

	len = RTE_ALIGN(nb_wrr * sizeof(*rx_adapter->wrr_sched),
			RTE_CACHE_LINE_SIZE);
	return  rte_zmalloc_socket(rx_adapter->mem_name,
				len,
				RTE_CACHE_LINE_SIZE,
				rx_adapter->socket_id);
}

static int
rxa_alloc_poll_arrays(struct rte_event_eth_rx_adapter *rx_adapter,
		uint32_t nb_poll,
		uint32_t nb_wrr,
		struct eth_rx_poll_entry **rx_poll,
		uint32_t **wrr_sched)
{

	if (nb_poll == 0) {
		*rx_poll = NULL;
		*wrr_sched = NULL;
		return 0;
	}

	*rx_poll = rxa_alloc_poll(rx_adapter, nb_poll);
	if (*rx_poll == NULL) {
		*wrr_sched = NULL;
		return -ENOMEM;
	}

	*wrr_sched = rxa_alloc_wrr(rx_adapter, nb_wrr);
	if (*wrr_sched == NULL) {
		rte_free(*rx_poll);
		return -ENOMEM;
	}
	return 0;
}

/* Precalculate WRR polling sequence for all queues in rx_adapter */
static void
rxa_calc_wrr_sequence(struct rte_event_eth_rx_adapter *rx_adapter,
		struct eth_rx_poll_entry *rx_poll,
		uint32_t *rx_wrr)
{
	uint16_t d;
	uint16_t q;
	unsigned int i;
	int prev = -1;
	int cw = -1;

	/* Initialize variables for calculation of wrr schedule */
	uint16_t max_wrr_pos = 0;
	unsigned int poll_q = 0;
	uint16_t max_wt = 0;
	uint16_t gcd = 0;

	if (rx_poll == NULL)
		return;

	/* Generate array of all queues to poll, the size of this
	 * array is poll_q
	 */
	RTE_ETH_FOREACH_DEV(d) {
		uint16_t nb_rx_queues;
		struct eth_device_info *dev_info =
				&rx_adapter->eth_devices[d];
		nb_rx_queues = dev_info->dev->data->nb_rx_queues;
		if (dev_info->rx_queue == NULL)
			continue;
		if (dev_info->internal_event_port)
			continue;
		dev_info->wrr_len = 0;
		for (q = 0; q < nb_rx_queues; q++) {
			struct eth_rx_queue_info *queue_info =
				&dev_info->rx_queue[q];
			uint16_t wt;

			if (!rxa_polled_queue(dev_info, q))
				continue;
			wt = queue_info->wt;
			rx_poll[poll_q].eth_dev_id = d;
			rx_poll[poll_q].eth_rx_qid = q;
			max_wrr_pos += wt;
			dev_info->wrr_len += wt;
			max_wt = RTE_MAX(max_wt, wt);
			gcd = (gcd) ? rxa_gcd_u16(gcd, wt) : wt;
			poll_q++;
		}
	}

	/* Generate polling sequence based on weights */
	prev = -1;
	cw = -1;
	for (i = 0; i < max_wrr_pos; i++) {
		rx_wrr[i] = rxa_wrr_next(rx_adapter, poll_q, &cw,
				     rx_poll, max_wt, gcd, prev);
		prev = rx_wrr[i];
	}
}

static inline void
rxa_mtoip(struct rte_mbuf *m, struct ipv4_hdr **ipv4_hdr,
	struct ipv6_hdr **ipv6_hdr)
{
	struct rte_ether_hdr *eth_hdr =
		rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
	struct rte_vlan_hdr *vlan_hdr;

	*ipv4_hdr = NULL;
	*ipv6_hdr = NULL;

	switch (eth_hdr->ether_type) {
	case RTE_BE16(RTE_ETHER_TYPE_IPv4):
		*ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
		break;

	case RTE_BE16(RTE_ETHER_TYPE_IPv6):
		*ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
		break;

	case RTE_BE16(RTE_ETHER_TYPE_VLAN):
		vlan_hdr = (struct rte_vlan_hdr *)(eth_hdr + 1);
		switch (vlan_hdr->eth_proto) {
		case RTE_BE16(RTE_ETHER_TYPE_IPv4):
			*ipv4_hdr = (struct ipv4_hdr *)(vlan_hdr + 1);
			break;
		case RTE_BE16(RTE_ETHER_TYPE_IPv6):
			*ipv6_hdr = (struct ipv6_hdr *)(vlan_hdr + 1);
			break;
		default:
			break;
		}
		break;

	default:
		break;
	}
}

/* Calculate RSS hash for IPv4/6 */
static inline uint32_t
rxa_do_softrss(struct rte_mbuf *m, const uint8_t *rss_key_be)
{
	uint32_t input_len;
	void *tuple;
	struct rte_ipv4_tuple ipv4_tuple;
	struct rte_ipv6_tuple ipv6_tuple;
	struct ipv4_hdr *ipv4_hdr;
	struct ipv6_hdr *ipv6_hdr;

	rxa_mtoip(m, &ipv4_hdr, &ipv6_hdr);

	if (ipv4_hdr) {
		ipv4_tuple.src_addr = rte_be_to_cpu_32(ipv4_hdr->src_addr);
		ipv4_tuple.dst_addr = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
		tuple = &ipv4_tuple;
		input_len = RTE_THASH_V4_L3_LEN;
	} else if (ipv6_hdr) {
		rte_thash_load_v6_addrs(ipv6_hdr,
					(union rte_thash_tuple *)&ipv6_tuple);
		tuple = &ipv6_tuple;
		input_len = RTE_THASH_V6_L3_LEN;
	} else
		return 0;

	return rte_softrss_be(tuple, input_len, rss_key_be);
}

static inline int
rxa_enq_blocked(struct rte_event_eth_rx_adapter *rx_adapter)
{
	return !!rx_adapter->enq_block_count;
}

static inline void
rxa_enq_block_start_ts(struct rte_event_eth_rx_adapter *rx_adapter)
{
	if (rx_adapter->rx_enq_block_start_ts)
		return;

	rx_adapter->enq_block_count++;
	if (rx_adapter->enq_block_count < BLOCK_CNT_THRESHOLD)
		return;

	rx_adapter->rx_enq_block_start_ts = rte_get_tsc_cycles();
}

static inline void
rxa_enq_block_end_ts(struct rte_event_eth_rx_adapter *rx_adapter,
		    struct rte_event_eth_rx_adapter_stats *stats)
{
	if (unlikely(!stats->rx_enq_start_ts))
		stats->rx_enq_start_ts = rte_get_tsc_cycles();

	if (likely(!rxa_enq_blocked(rx_adapter)))
		return;

	rx_adapter->enq_block_count = 0;
	if (rx_adapter->rx_enq_block_start_ts) {
		stats->rx_enq_end_ts = rte_get_tsc_cycles();
		stats->rx_enq_block_cycles += stats->rx_enq_end_ts -
		    rx_adapter->rx_enq_block_start_ts;
		rx_adapter->rx_enq_block_start_ts = 0;
	}
}

/* Add event to buffer, free space check is done prior to calling
 * this function
 */
static inline void
rxa_buffer_event(struct rte_event_eth_rx_adapter *rx_adapter,
		struct rte_event *ev)
{
	struct rte_eth_event_enqueue_buffer *buf =
	    &rx_adapter->event_enqueue_buffer;
	rte_memcpy(&buf->events[buf->count++], ev, sizeof(struct rte_event));
}

/* Enqueue buffered events to event device */
static inline uint16_t
rxa_flush_event_buffer(struct rte_event_eth_rx_adapter *rx_adapter)
{
	struct rte_eth_event_enqueue_buffer *buf =
	    &rx_adapter->event_enqueue_buffer;
	struct rte_event_eth_rx_adapter_stats *stats = &rx_adapter->stats;

	uint16_t n = rte_event_enqueue_new_burst(rx_adapter->eventdev_id,
					rx_adapter->event_port_id,
					buf->events,
					buf->count);
	if (n != buf->count) {
		memmove(buf->events,
			&buf->events[n],
			(buf->count - n) * sizeof(struct rte_event));
		stats->rx_enq_retry++;
	}

	n ? rxa_enq_block_end_ts(rx_adapter, stats) :
		rxa_enq_block_start_ts(rx_adapter);

	buf->count -= n;
	stats->rx_enq_count += n;

	return n;
}

static inline void
rxa_buffer_mbufs(struct rte_event_eth_rx_adapter *rx_adapter,
		uint16_t eth_dev_id,
		uint16_t rx_queue_id,
		struct rte_mbuf **mbufs,
		uint16_t num)
{
	uint32_t i;
	struct eth_device_info *dev_info =
					&rx_adapter->eth_devices[eth_dev_id];
	struct eth_rx_queue_info *eth_rx_queue_info =
					&dev_info->rx_queue[rx_queue_id];
	struct rte_eth_event_enqueue_buffer *buf =
					&rx_adapter->event_enqueue_buffer;
	int32_t qid = eth_rx_queue_info->event_queue_id;
	uint8_t sched_type = eth_rx_queue_info->sched_type;
	uint8_t priority = eth_rx_queue_info->priority;
	uint32_t flow_id;
	struct rte_event events[BATCH_SIZE];
	struct rte_mbuf *m = mbufs[0];
	uint32_t rss_mask;
	uint32_t rss;
	int do_rss;
	uint64_t ts;
	struct rte_mbuf *cb_mbufs[BATCH_SIZE];
	uint16_t nb_cb;

	/* 0xffff ffff if PKT_RX_RSS_HASH is set, otherwise 0 */
	rss_mask = ~(((m->ol_flags & PKT_RX_RSS_HASH) != 0) - 1);
	do_rss = !rss_mask && !eth_rx_queue_info->flow_id_mask;

	if ((m->ol_flags & PKT_RX_TIMESTAMP) == 0) {
		ts = rte_get_tsc_cycles();
		for (i = 0; i < num; i++) {
			m = mbufs[i];

			m->timestamp = ts;
			m->ol_flags |= PKT_RX_TIMESTAMP;
		}
	}


	nb_cb = dev_info->cb_fn ? dev_info->cb_fn(eth_dev_id, rx_queue_id,
						ETH_EVENT_BUFFER_SIZE,
						buf->count, mbufs,
						num,
						dev_info->cb_arg,
						cb_mbufs) :
						num;
	if (nb_cb < num) {
		mbufs = cb_mbufs;
		num = nb_cb;
	}

	for (i = 0; i < num; i++) {
		m = mbufs[i];
		struct rte_event *ev = &events[i];

		rss = do_rss ?
			rxa_do_softrss(m, rx_adapter->rss_key_be) :
			m->hash.rss;
		flow_id =
		    eth_rx_queue_info->flow_id &
				eth_rx_queue_info->flow_id_mask;
		flow_id |= rss & ~eth_rx_queue_info->flow_id_mask;
		ev->flow_id = flow_id;
		ev->op = RTE_EVENT_OP_NEW;
		ev->sched_type = sched_type;
		ev->queue_id = qid;
		ev->event_type = RTE_EVENT_TYPE_ETH_RX_ADAPTER;
		ev->sub_event_type = 0;
		ev->priority = priority;
		ev->mbuf = m;

		rxa_buffer_event(rx_adapter, ev);
	}
}

/* Enqueue packets from  <port, q>  to event buffer */
static inline uint32_t
rxa_eth_rx(struct rte_event_eth_rx_adapter *rx_adapter,
	uint16_t port_id,
	uint16_t queue_id,
	uint32_t rx_count,
	uint32_t max_rx,
	int *rxq_empty)
{
	struct rte_mbuf *mbufs[BATCH_SIZE];
	struct rte_eth_event_enqueue_buffer *buf =
					&rx_adapter->event_enqueue_buffer;
	struct rte_event_eth_rx_adapter_stats *stats =
					&rx_adapter->stats;
	uint16_t n;
	uint32_t nb_rx = 0;

	if (rxq_empty)
		*rxq_empty = 0;
	/* Don't do a batch dequeue from the rx queue if there isn't
	 * enough space in the enqueue buffer.
	 */
	while (BATCH_SIZE <= (RTE_DIM(buf->events) - buf->count)) {
		if (buf->count >= BATCH_SIZE)
			rxa_flush_event_buffer(rx_adapter);

		stats->rx_poll_count++;
		n = rte_eth_rx_burst(port_id, queue_id, mbufs, BATCH_SIZE);
		if (unlikely(!n)) {
			if (rxq_empty)
				*rxq_empty = 1;
			break;
		}
		rxa_buffer_mbufs(rx_adapter, port_id, queue_id, mbufs, n);
		nb_rx += n;
		if (rx_count + nb_rx > max_rx)
			break;
	}

	if (buf->count > 0)
		rxa_flush_event_buffer(rx_adapter);

	return nb_rx;
}

static inline void
rxa_intr_ring_enqueue(struct rte_event_eth_rx_adapter *rx_adapter,
		void *data)
{
	uint16_t port_id;
	uint16_t queue;
	int err;
	union queue_data qd;
	struct eth_device_info *dev_info;
	struct eth_rx_queue_info *queue_info;
	int *intr_enabled;

	qd.ptr = data;
	port_id = qd.port;
	queue = qd.queue;

	dev_info = &rx_adapter->eth_devices[port_id];
	queue_info = &dev_info->rx_queue[queue];
	rte_spinlock_lock(&rx_adapter->intr_ring_lock);
	if (rxa_shared_intr(dev_info, queue))
		intr_enabled = &dev_info->shared_intr_enabled;
	else
		intr_enabled = &queue_info->intr_enabled;

	if (*intr_enabled) {
		*intr_enabled = 0;
		err = rte_ring_enqueue(rx_adapter->intr_ring, data);
		/* Entry should always be available.
		 * The ring size equals the maximum number of interrupt
		 * vectors supported (an interrupt vector is shared in
		 * case of shared interrupts)
		 */
		if (err)
			RTE_EDEV_LOG_ERR("Failed to enqueue interrupt"
				" to ring: %s", strerror(-err));
		else
			rte_eth_dev_rx_intr_disable(port_id, queue);
	}
	rte_spinlock_unlock(&rx_adapter->intr_ring_lock);
}

static int
rxa_intr_ring_check_avail(struct rte_event_eth_rx_adapter *rx_adapter,
			uint32_t num_intr_vec)
{
	if (rx_adapter->num_intr_vec + num_intr_vec >
				RTE_EVENT_ETH_INTR_RING_SIZE) {
		RTE_EDEV_LOG_ERR("Exceeded intr ring slots current"
		" %d needed %d limit %d", rx_adapter->num_intr_vec,
		num_intr_vec, RTE_EVENT_ETH_INTR_RING_SIZE);
		return -ENOSPC;
	}

	return 0;
}

/* Delete entries for (dev, queue) from the interrupt ring */
static void
rxa_intr_ring_del_entries(struct rte_event_eth_rx_adapter *rx_adapter,
			struct eth_device_info *dev_info,
			uint16_t rx_queue_id)
{
	int i, n;
	union queue_data qd;

	rte_spinlock_lock(&rx_adapter->intr_ring_lock);

	n = rte_ring_count(rx_adapter->intr_ring);
	for (i = 0; i < n; i++) {
		rte_ring_dequeue(rx_adapter->intr_ring, &qd.ptr);
		if (!rxa_shared_intr(dev_info, rx_queue_id)) {
			if (qd.port == dev_info->dev->data->port_id &&
				qd.queue == rx_queue_id)
				continue;
		} else {
			if (qd.port == dev_info->dev->data->port_id)
				continue;
		}
		rte_ring_enqueue(rx_adapter->intr_ring, qd.ptr);
	}

	rte_spinlock_unlock(&rx_adapter->intr_ring_lock);
}

/* pthread callback handling interrupt mode receive queues
 * After receiving an Rx interrupt, it enqueues the port id and queue id of the
 * interrupting queue to the adapter's ring buffer for interrupt events.
 * These events are picked up by rxa_intr_ring_dequeue() which is invoked from
 * the adapter service function.
 */
static void *
rxa_intr_thread(void *arg)
{
	struct rte_event_eth_rx_adapter *rx_adapter = arg;
	struct rte_epoll_event *epoll_events = rx_adapter->epoll_events;
	int n, i;

	while (1) {
		n = rte_epoll_wait(rx_adapter->epd, epoll_events,
				RTE_EVENT_ETH_INTR_RING_SIZE, -1);
		if (unlikely(n < 0))
			RTE_EDEV_LOG_ERR("rte_epoll_wait returned error %d",
					n);
		for (i = 0; i < n; i++) {
			rxa_intr_ring_enqueue(rx_adapter,
					epoll_events[i].epdata.data);
		}
	}

	return NULL;
}

/* Dequeue <port, q> from interrupt ring and enqueue received
 * mbufs to eventdev
 */
static inline uint32_t
rxa_intr_ring_dequeue(struct rte_event_eth_rx_adapter *rx_adapter)
{
	uint32_t n;
	uint32_t nb_rx = 0;
	int rxq_empty;
	struct rte_eth_event_enqueue_buffer *buf;
	rte_spinlock_t *ring_lock;
	uint8_t max_done = 0;

	if (rx_adapter->num_rx_intr == 0)
		return 0;

	if (rte_ring_count(rx_adapter->intr_ring) == 0
		&& !rx_adapter->qd_valid)
		return 0;

	buf = &rx_adapter->event_enqueue_buffer;
	ring_lock = &rx_adapter->intr_ring_lock;

	if (buf->count >= BATCH_SIZE)
		rxa_flush_event_buffer(rx_adapter);

	while (BATCH_SIZE <= (RTE_DIM(buf->events) - buf->count)) {
		struct eth_device_info *dev_info;
		uint16_t port;
		uint16_t queue;
		union queue_data qd  = rx_adapter->qd;
		int err;

		if (!rx_adapter->qd_valid) {
			struct eth_rx_queue_info *queue_info;

			rte_spinlock_lock(ring_lock);
			err = rte_ring_dequeue(rx_adapter->intr_ring, &qd.ptr);
			if (err) {
				rte_spinlock_unlock(ring_lock);
				break;
			}

			port = qd.port;
			queue = qd.queue;
			rx_adapter->qd = qd;
			rx_adapter->qd_valid = 1;
			dev_info = &rx_adapter->eth_devices[port];
			if (rxa_shared_intr(dev_info, queue))
				dev_info->shared_intr_enabled = 1;
			else {
				queue_info = &dev_info->rx_queue[queue];
				queue_info->intr_enabled = 1;
			}
			rte_eth_dev_rx_intr_enable(port, queue);
			rte_spinlock_unlock(ring_lock);
		} else {
			port = qd.port;
			queue = qd.queue;

			dev_info = &rx_adapter->eth_devices[port];
		}

		if (rxa_shared_intr(dev_info, queue)) {
			uint16_t i;
			uint16_t nb_queues;

			nb_queues = dev_info->dev->data->nb_rx_queues;
			n = 0;
			for (i = dev_info->next_q_idx; i < nb_queues; i++) {
				uint8_t enq_buffer_full;

				if (!rxa_intr_queue(dev_info, i))
					continue;
				n = rxa_eth_rx(rx_adapter, port, i, nb_rx,
					rx_adapter->max_nb_rx,
					&rxq_empty);
				nb_rx += n;

				enq_buffer_full = !rxq_empty && n == 0;
				max_done = nb_rx > rx_adapter->max_nb_rx;

				if (enq_buffer_full || max_done) {
					dev_info->next_q_idx = i;
					goto done;
				}
			}

			rx_adapter->qd_valid = 0;

			/* Reinitialize for next interrupt */
			dev_info->next_q_idx = dev_info->multi_intr_cap ?
						RTE_MAX_RXTX_INTR_VEC_ID - 1 :
						0;
		} else {
			n = rxa_eth_rx(rx_adapter, port, queue, nb_rx,
				rx_adapter->max_nb_rx,
				&rxq_empty);
			rx_adapter->qd_valid = !rxq_empty;
			nb_rx += n;
			if (nb_rx > rx_adapter->max_nb_rx)
				break;
		}
	}

done:
	rx_adapter->stats.rx_intr_packets += nb_rx;
	return nb_rx;
}

/*
 * Polls receive queues added to the event adapter and enqueues received
 * packets to the event device.
 *
 * The receive code enqueues initially to a temporary buffer, the
 * temporary buffer is drained anytime it holds >= BATCH_SIZE packets
 *
 * If there isn't space available in the temporary buffer, packets from the
 * Rx queue aren't dequeued from the eth device, this back pressures the
 * eth device, in virtual device environments this back pressure is relayed to
 * the hypervisor's switching layer where adjustments can be made to deal with
 * it.
 */
static inline uint32_t
rxa_poll(struct rte_event_eth_rx_adapter *rx_adapter)
{
	uint32_t num_queue;
	uint32_t nb_rx = 0;
	struct rte_eth_event_enqueue_buffer *buf;
	uint32_t wrr_pos;
	uint32_t max_nb_rx;

	wrr_pos = rx_adapter->wrr_pos;
	max_nb_rx = rx_adapter->max_nb_rx;
	buf = &rx_adapter->event_enqueue_buffer;

	/* Iterate through a WRR sequence */
	for (num_queue = 0; num_queue < rx_adapter->wrr_len; num_queue++) {
		unsigned int poll_idx = rx_adapter->wrr_sched[wrr_pos];
		uint16_t qid = rx_adapter->eth_rx_poll[poll_idx].eth_rx_qid;
		uint16_t d = rx_adapter->eth_rx_poll[poll_idx].eth_dev_id;

		/* Don't do a batch dequeue from the rx queue if there isn't
		 * enough space in the enqueue buffer.
		 */
		if (buf->count >= BATCH_SIZE)
			rxa_flush_event_buffer(rx_adapter);
		if (BATCH_SIZE > (ETH_EVENT_BUFFER_SIZE - buf->count)) {
			rx_adapter->wrr_pos = wrr_pos;
			return nb_rx;
		}

		nb_rx += rxa_eth_rx(rx_adapter, d, qid, nb_rx, max_nb_rx,
				NULL);
		if (nb_rx > max_nb_rx) {
			rx_adapter->wrr_pos =
				    (wrr_pos + 1) % rx_adapter->wrr_len;
			break;
		}

		if (++wrr_pos == rx_adapter->wrr_len)
			wrr_pos = 0;
	}
	return nb_rx;
}

static int
rxa_service_func(void *args)
{
	struct rte_event_eth_rx_adapter *rx_adapter = args;
	struct rte_event_eth_rx_adapter_stats *stats;

	if (rte_spinlock_trylock(&rx_adapter->rx_lock) == 0)
		return 0;
	if (!rx_adapter->rxa_started) {
		rte_spinlock_unlock(&rx_adapter->rx_lock);
		return 0;
	}

	stats = &rx_adapter->stats;
	stats->rx_packets += rxa_intr_ring_dequeue(rx_adapter);
	stats->rx_packets += rxa_poll(rx_adapter);
	rte_spinlock_unlock(&rx_adapter->rx_lock);
	return 0;
}

static int
rte_event_eth_rx_adapter_init(void)
{
	const char *name = "rte_event_eth_rx_adapter_array";
	const struct rte_memzone *mz;
	unsigned int sz;

	sz = sizeof(*event_eth_rx_adapter) *
	    RTE_EVENT_ETH_RX_ADAPTER_MAX_INSTANCE;
	sz = RTE_ALIGN(sz, RTE_CACHE_LINE_SIZE);

	mz = rte_memzone_lookup(name);
	if (mz == NULL) {
		mz = rte_memzone_reserve_aligned(name, sz, rte_socket_id(), 0,
						 RTE_CACHE_LINE_SIZE);
		if (mz == NULL) {
			RTE_EDEV_LOG_ERR("failed to reserve memzone err = %"
					PRId32, rte_errno);
			return -rte_errno;
		}
	}

	event_eth_rx_adapter = mz->addr;
	return 0;
}

static inline struct rte_event_eth_rx_adapter *
rxa_id_to_adapter(uint8_t id)
{
	return event_eth_rx_adapter ?
		event_eth_rx_adapter[id] : NULL;
}

static int
rxa_default_conf_cb(uint8_t id, uint8_t dev_id,
		struct rte_event_eth_rx_adapter_conf *conf, void *arg)
{
	int ret;
	struct rte_eventdev *dev;
	struct rte_event_dev_config dev_conf;
	int started;
	uint8_t port_id;
	struct rte_event_port_conf *port_conf = arg;
	struct rte_event_eth_rx_adapter *rx_adapter = rxa_id_to_adapter(id);

	dev = &rte_eventdevs[rx_adapter->eventdev_id];
	dev_conf = dev->data->dev_conf;

	started = dev->data->dev_started;
	if (started)
		rte_event_dev_stop(dev_id);
	port_id = dev_conf.nb_event_ports;
	dev_conf.nb_event_ports += 1;
	ret = rte_event_dev_configure(dev_id, &dev_conf);
	if (ret) {
		RTE_EDEV_LOG_ERR("failed to configure event dev %u\n",
						dev_id);
		if (started) {
			if (rte_event_dev_start(dev_id))
				return -EIO;
		}
		return ret;
	}

	ret = rte_event_port_setup(dev_id, port_id, port_conf);
	if (ret) {
		RTE_EDEV_LOG_ERR("failed to setup event port %u\n",
					port_id);
		return ret;
	}

	conf->event_port_id = port_id;
	conf->max_nb_rx = 128;
	if (started)
		ret = rte_event_dev_start(dev_id);
	rx_adapter->default_cb_arg = 1;
	return ret;
}

static int
rxa_epoll_create1(void)
{
#if defined(LINUX)
	int fd;
	fd = epoll_create1(EPOLL_CLOEXEC);
	return fd < 0 ? -errno : fd;
#elif defined(BSD)
	return -ENOTSUP;
#endif
}

static int
rxa_init_epd(struct rte_event_eth_rx_adapter *rx_adapter)
{
	if (rx_adapter->epd != INIT_FD)
		return 0;

	rx_adapter->epd = rxa_epoll_create1();
	if (rx_adapter->epd < 0) {
		int err = rx_adapter->epd;
		rx_adapter->epd = INIT_FD;
		RTE_EDEV_LOG_ERR("epoll_create1() failed, err %d", err);
		return err;
	}

	return 0;
}

static int
rxa_create_intr_thread(struct rte_event_eth_rx_adapter *rx_adapter)
{
	int err;
	char thread_name[RTE_MAX_THREAD_NAME_LEN];

	if (rx_adapter->intr_ring)
		return 0;

	rx_adapter->intr_ring = rte_ring_create("intr_ring",
					RTE_EVENT_ETH_INTR_RING_SIZE,
					rte_socket_id(), 0);
	if (!rx_adapter->intr_ring)
		return -ENOMEM;

	rx_adapter->epoll_events = rte_zmalloc_socket(rx_adapter->mem_name,
					RTE_EVENT_ETH_INTR_RING_SIZE *
					sizeof(struct rte_epoll_event),
					RTE_CACHE_LINE_SIZE,
					rx_adapter->socket_id);
	if (!rx_adapter->epoll_events) {
		err = -ENOMEM;
		goto error;
	}

	rte_spinlock_init(&rx_adapter->intr_ring_lock);

	snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN,
			"rx-intr-thread-%d", rx_adapter->id);

	err = rte_ctrl_thread_create(&rx_adapter->rx_intr_thread, thread_name,
				NULL, rxa_intr_thread, rx_adapter);
	if (!err) {
		rte_thread_setname(rx_adapter->rx_intr_thread, thread_name);
		return 0;
	}

	RTE_EDEV_LOG_ERR("Failed to create interrupt thread err = %d\n", err);
error:
	rte_ring_free(rx_adapter->intr_ring);
	rx_adapter->intr_ring = NULL;
	rx_adapter->epoll_events = NULL;
	return err;
}

static int
rxa_destroy_intr_thread(struct rte_event_eth_rx_adapter *rx_adapter)
{
	int err;

	err = pthread_cancel(rx_adapter->rx_intr_thread);
	if (err)
		RTE_EDEV_LOG_ERR("Can't cancel interrupt thread err = %d\n",
				err);

	err = pthread_join(rx_adapter->rx_intr_thread, NULL);
	if (err)
		RTE_EDEV_LOG_ERR("Can't join interrupt thread err = %d\n", err);

	rte_free(rx_adapter->epoll_events);
	rte_ring_free(rx_adapter->intr_ring);
	rx_adapter->intr_ring = NULL;
	rx_adapter->epoll_events = NULL;
	return 0;
}

static int
rxa_free_intr_resources(struct rte_event_eth_rx_adapter *rx_adapter)
{
	int ret;

	if (rx_adapter->num_rx_intr == 0)
		return 0;

	ret = rxa_destroy_intr_thread(rx_adapter);
	if (ret)
		return ret;

	close(rx_adapter->epd);
	rx_adapter->epd = INIT_FD;

	return ret;
}

static int
rxa_disable_intr(struct rte_event_eth_rx_adapter *rx_adapter,
	struct eth_device_info *dev_info,
	uint16_t rx_queue_id)
{
	int err;
	uint16_t eth_dev_id = dev_info->dev->data->port_id;
	int sintr = rxa_shared_intr(dev_info, rx_queue_id);

	err = rte_eth_dev_rx_intr_disable(eth_dev_id, rx_queue_id);
	if (err) {
		RTE_EDEV_LOG_ERR("Could not disable interrupt for Rx queue %u",
			rx_queue_id);
		return err;
	}

	err = rte_eth_dev_rx_intr_ctl_q(eth_dev_id, rx_queue_id,
					rx_adapter->epd,
					RTE_INTR_EVENT_DEL,
					0);
	if (err)
		RTE_EDEV_LOG_ERR("Interrupt event deletion failed %d", err);

	if (sintr)
		dev_info->rx_queue[rx_queue_id].intr_enabled = 0;
	else
		dev_info->shared_intr_enabled = 0;
	return err;
}

static int
rxa_del_intr_queue(struct rte_event_eth_rx_adapter *rx_adapter,
		struct eth_device_info *dev_info,
		int rx_queue_id)
{
	int err;
	int i;
	int s;

	if (dev_info->nb_rx_intr == 0)
		return 0;

	err = 0;
	if (rx_queue_id == -1) {
		s = dev_info->nb_shared_intr;
		for (i = 0; i < dev_info->nb_rx_intr; i++) {
			int sintr;
			uint16_t q;

			q = dev_info->intr_queue[i];
			sintr = rxa_shared_intr(dev_info, q);
			s -= sintr;

			if (!sintr || s == 0) {

				err = rxa_disable_intr(rx_adapter, dev_info,
						q);
				if (err)
					return err;
				rxa_intr_ring_del_entries(rx_adapter, dev_info,
							q);
			}
		}
	} else {
		if (!rxa_intr_queue(dev_info, rx_queue_id))
			return 0;
		if (!rxa_shared_intr(dev_info, rx_queue_id) ||
				dev_info->nb_shared_intr == 1) {
			err = rxa_disable_intr(rx_adapter, dev_info,
					rx_queue_id);
			if (err)
				return err;
			rxa_intr_ring_del_entries(rx_adapter, dev_info,
						rx_queue_id);
		}

		for (i = 0; i < dev_info->nb_rx_intr; i++) {
			if (dev_info->intr_queue[i] == rx_queue_id) {
				for (; i < dev_info->nb_rx_intr - 1; i++)
					dev_info->intr_queue[i] =
						dev_info->intr_queue[i + 1];
				break;
			}
		}
	}

	return err;
}

static int
rxa_config_intr(struct rte_event_eth_rx_adapter *rx_adapter,
	struct eth_device_info *dev_info,
	uint16_t rx_queue_id)
{
	int err, err1;
	uint16_t eth_dev_id = dev_info->dev->data->port_id;
	union queue_data qd;
	int init_fd;
	uint16_t *intr_queue;
	int sintr = rxa_shared_intr(dev_info, rx_queue_id);

	if (rxa_intr_queue(dev_info, rx_queue_id))
		return 0;

	intr_queue = dev_info->intr_queue;
	if (dev_info->intr_queue == NULL) {
		size_t len =
			dev_info->dev->data->nb_rx_queues * sizeof(uint16_t);
		dev_info->intr_queue =
			rte_zmalloc_socket(
				rx_adapter->mem_name,
				len,
				0,
				rx_adapter->socket_id);
		if (dev_info->intr_queue == NULL)
			return -ENOMEM;
	}

	init_fd = rx_adapter->epd;
	err = rxa_init_epd(rx_adapter);
	if (err)
		goto err_free_queue;

	qd.port = eth_dev_id;
	qd.queue = rx_queue_id;

	err = rte_eth_dev_rx_intr_ctl_q(eth_dev_id, rx_queue_id,
					rx_adapter->epd,
					RTE_INTR_EVENT_ADD,
					qd.ptr);
	if (err) {
		RTE_EDEV_LOG_ERR("Failed to add interrupt event for"
			" Rx Queue %u err %d", rx_queue_id, err);
		goto err_del_fd;
	}

	err = rte_eth_dev_rx_intr_enable(eth_dev_id, rx_queue_id);
	if (err) {
		RTE_EDEV_LOG_ERR("Could not enable interrupt for"
				" Rx Queue %u err %d", rx_queue_id, err);

		goto err_del_event;
	}

	err = rxa_create_intr_thread(rx_adapter);
	if (!err)  {
		if (sintr)
			dev_info->shared_intr_enabled = 1;
		else
			dev_info->rx_queue[rx_queue_id].intr_enabled = 1;
		return 0;
	}


	err = rte_eth_dev_rx_intr_disable(eth_dev_id, rx_queue_id);
	if (err)
		RTE_EDEV_LOG_ERR("Could not disable interrupt for"
				" Rx Queue %u err %d", rx_queue_id, err);
err_del_event:
	err1 = rte_eth_dev_rx_intr_ctl_q(eth_dev_id, rx_queue_id,
					rx_adapter->epd,
					RTE_INTR_EVENT_DEL,
					0);
	if (err1) {
		RTE_EDEV_LOG_ERR("Could not delete event for"
				" Rx Queue %u err %d", rx_queue_id, err1);
	}
err_del_fd:
	if (init_fd == INIT_FD) {
		close(rx_adapter->epd);
		rx_adapter->epd = -1;
	}
err_free_queue:
	if (intr_queue == NULL)
		rte_free(dev_info->intr_queue);

	return err;
}

static int
rxa_add_intr_queue(struct rte_event_eth_rx_adapter *rx_adapter,
	struct eth_device_info *dev_info,
	int rx_queue_id)

{
	int i, j, err;
	int si = -1;
	int shared_done = (dev_info->nb_shared_intr > 0);

	if (rx_queue_id != -1) {
		if (rxa_shared_intr(dev_info, rx_queue_id) && shared_done)
			return 0;
		return rxa_config_intr(rx_adapter, dev_info, rx_queue_id);
	}

	err = 0;
	for (i = 0; i < dev_info->dev->data->nb_rx_queues; i++) {

		if (rxa_shared_intr(dev_info, i) && shared_done)
			continue;

		err = rxa_config_intr(rx_adapter, dev_info, i);

		shared_done = err == 0 && rxa_shared_intr(dev_info, i);
		if (shared_done) {
			si = i;
			dev_info->shared_intr_enabled = 1;
		}
		if (err)
			break;
	}

	if (err == 0)
		return 0;

	shared_done = (dev_info->nb_shared_intr > 0);
	for (j = 0; j < i; j++) {
		if (rxa_intr_queue(dev_info, j))
			continue;
		if (rxa_shared_intr(dev_info, j) && si != j)
			continue;
		err = rxa_disable_intr(rx_adapter, dev_info, j);
		if (err)
			break;

	}

	return err;
}


static int
rxa_init_service(struct rte_event_eth_rx_adapter *rx_adapter, uint8_t id)
{
	int ret;
	struct rte_service_spec service;
	struct rte_event_eth_rx_adapter_conf rx_adapter_conf;

	if (rx_adapter->service_inited)
		return 0;

	memset(&service, 0, sizeof(service));
	snprintf(service.name, ETH_RX_ADAPTER_SERVICE_NAME_LEN,
		"rte_event_eth_rx_adapter_%d", id);
	service.socket_id = rx_adapter->socket_id;
	service.callback = rxa_service_func;
	service.callback_userdata = rx_adapter;
	/* Service function handles locking for queue add/del updates */
	service.capabilities = RTE_SERVICE_CAP_MT_SAFE;
	ret = rte_service_component_register(&service, &rx_adapter->service_id);
	if (ret) {
		RTE_EDEV_LOG_ERR("failed to register service %s err = %" PRId32,
			service.name, ret);
		return ret;
	}

	ret = rx_adapter->conf_cb(id, rx_adapter->eventdev_id,
		&rx_adapter_conf, rx_adapter->conf_arg);
	if (ret) {
		RTE_EDEV_LOG_ERR("configuration callback failed err = %" PRId32,
			ret);
		goto err_done;
	}
	rx_adapter->event_port_id = rx_adapter_conf.event_port_id;
	rx_adapter->max_nb_rx = rx_adapter_conf.max_nb_rx;
	rx_adapter->service_inited = 1;
	rx_adapter->epd = INIT_FD;
	return 0;

err_done:
	rte_service_component_unregister(rx_adapter->service_id);
	return ret;
}

static void
rxa_update_queue(struct rte_event_eth_rx_adapter *rx_adapter,
		struct eth_device_info *dev_info,
		int32_t rx_queue_id,
		uint8_t add)
{
	struct eth_rx_queue_info *queue_info;
	int enabled;
	uint16_t i;

	if (dev_info->rx_queue == NULL)
		return;

	if (rx_queue_id == -1) {
		for (i = 0; i < dev_info->dev->data->nb_rx_queues; i++)
			rxa_update_queue(rx_adapter, dev_info, i, add);
	} else {
		queue_info = &dev_info->rx_queue[rx_queue_id];
		enabled = queue_info->queue_enabled;
		if (add) {
			rx_adapter->nb_queues += !enabled;
			dev_info->nb_dev_queues += !enabled;
		} else {
			rx_adapter->nb_queues -= enabled;
			dev_info->nb_dev_queues -= enabled;
		}
		queue_info->queue_enabled = !!add;
	}
}

static void
rxa_sw_del(struct rte_event_eth_rx_adapter *rx_adapter,
	struct eth_device_info *dev_info,
	int32_t rx_queue_id)
{
	int pollq;
	int intrq;
	int sintrq;


	if (rx_adapter->nb_queues == 0)
		return;

	if (rx_queue_id == -1) {
		uint16_t nb_rx_queues;
		uint16_t i;

		nb_rx_queues = dev_info->dev->data->nb_rx_queues;
		for (i = 0; i <	nb_rx_queues; i++)
			rxa_sw_del(rx_adapter, dev_info, i);
		return;
	}

	pollq = rxa_polled_queue(dev_info, rx_queue_id);
	intrq = rxa_intr_queue(dev_info, rx_queue_id);
	sintrq = rxa_shared_intr(dev_info, rx_queue_id);
	rxa_update_queue(rx_adapter, dev_info, rx_queue_id, 0);
	rx_adapter->num_rx_polled -= pollq;
	dev_info->nb_rx_poll -= pollq;
	rx_adapter->num_rx_intr -= intrq;
	dev_info->nb_rx_intr -= intrq;
	dev_info->nb_shared_intr -= intrq && sintrq;
}

static void
rxa_add_queue(struct rte_event_eth_rx_adapter *rx_adapter,
	struct eth_device_info *dev_info,
	int32_t rx_queue_id,
	const struct rte_event_eth_rx_adapter_queue_conf *conf)
{
	struct eth_rx_queue_info *queue_info;
	const struct rte_event *ev = &conf->ev;
	int pollq;
	int intrq;
	int sintrq;

	if (rx_queue_id == -1) {
		uint16_t nb_rx_queues;
		uint16_t i;

		nb_rx_queues = dev_info->dev->data->nb_rx_queues;
		for (i = 0; i <	nb_rx_queues; i++)
			rxa_add_queue(rx_adapter, dev_info, i, conf);
		return;
	}

	pollq = rxa_polled_queue(dev_info, rx_queue_id);
	intrq = rxa_intr_queue(dev_info, rx_queue_id);
	sintrq = rxa_shared_intr(dev_info, rx_queue_id);

	queue_info = &dev_info->rx_queue[rx_queue_id];
	queue_info->event_queue_id = ev->queue_id;
	queue_info->sched_type = ev->sched_type;
	queue_info->priority = ev->priority;
	queue_info->wt = conf->servicing_weight;

	if (conf->rx_queue_flags &
			RTE_EVENT_ETH_RX_ADAPTER_QUEUE_FLOW_ID_VALID) {
		queue_info->flow_id = ev->flow_id;
		queue_info->flow_id_mask = ~0;
	}

	rxa_update_queue(rx_adapter, dev_info, rx_queue_id, 1);
	if (rxa_polled_queue(dev_info, rx_queue_id)) {
		rx_adapter->num_rx_polled += !pollq;
		dev_info->nb_rx_poll += !pollq;
		rx_adapter->num_rx_intr -= intrq;
		dev_info->nb_rx_intr -= intrq;
		dev_info->nb_shared_intr -= intrq && sintrq;
	}

	if (rxa_intr_queue(dev_info, rx_queue_id)) {
		rx_adapter->num_rx_polled -= pollq;
		dev_info->nb_rx_poll -= pollq;
		rx_adapter->num_rx_intr += !intrq;
		dev_info->nb_rx_intr += !intrq;
		dev_info->nb_shared_intr += !intrq && sintrq;
		if (dev_info->nb_shared_intr == 1) {
			if (dev_info->multi_intr_cap)
				dev_info->next_q_idx =
					RTE_MAX_RXTX_INTR_VEC_ID - 1;
			else
				dev_info->next_q_idx = 0;
		}
	}
}

static int rxa_sw_add(struct rte_event_eth_rx_adapter *rx_adapter,
		uint16_t eth_dev_id,
		int rx_queue_id,
		const struct rte_event_eth_rx_adapter_queue_conf *queue_conf)
{
	struct eth_device_info *dev_info = &rx_adapter->eth_devices[eth_dev_id];
	struct rte_event_eth_rx_adapter_queue_conf temp_conf;
	int ret;
	struct eth_rx_poll_entry *rx_poll;
	struct eth_rx_queue_info *rx_queue;
	uint32_t *rx_wrr;
	uint16_t nb_rx_queues;
	uint32_t nb_rx_poll, nb_wrr;
	uint32_t nb_rx_intr;
	int num_intr_vec;
	uint16_t wt;

	if (queue_conf->servicing_weight == 0) {
		struct rte_eth_dev_data *data = dev_info->dev->data;

		temp_conf = *queue_conf;
		if (!data->dev_conf.intr_conf.rxq) {
			/* If Rx interrupts are disabled set wt = 1 */
			temp_conf.servicing_weight = 1;
		}
		queue_conf = &temp_conf;
	}

	nb_rx_queues = dev_info->dev->data->nb_rx_queues;
	rx_queue = dev_info->rx_queue;
	wt = queue_conf->servicing_weight;

	if (dev_info->rx_queue == NULL) {
		dev_info->rx_queue =
		    rte_zmalloc_socket(rx_adapter->mem_name,
				       nb_rx_queues *
				       sizeof(struct eth_rx_queue_info), 0,
				       rx_adapter->socket_id);
		if (dev_info->rx_queue == NULL)
			return -ENOMEM;
	}
	rx_wrr = NULL;
	rx_poll = NULL;

	rxa_calc_nb_post_add(rx_adapter, dev_info, rx_queue_id,
			queue_conf->servicing_weight,
			&nb_rx_poll, &nb_rx_intr, &nb_wrr);

	if (dev_info->dev->intr_handle)
		dev_info->multi_intr_cap =
			rte_intr_cap_multiple(dev_info->dev->intr_handle);

	ret = rxa_alloc_poll_arrays(rx_adapter, nb_rx_poll, nb_wrr,
				&rx_poll, &rx_wrr);
	if (ret)
		goto err_free_rxqueue;

	if (wt == 0) {
		num_intr_vec = rxa_nb_intr_vect(dev_info, rx_queue_id, 1);

		ret = rxa_intr_ring_check_avail(rx_adapter, num_intr_vec);
		if (ret)
			goto err_free_rxqueue;

		ret = rxa_add_intr_queue(rx_adapter, dev_info, rx_queue_id);
		if (ret)
			goto err_free_rxqueue;
	} else {

		num_intr_vec = 0;
		if (rx_adapter->num_rx_intr > nb_rx_intr) {
			num_intr_vec = rxa_nb_intr_vect(dev_info,
						rx_queue_id, 0);
			/* interrupt based queues are being converted to
			 * poll mode queues, delete the interrupt configuration
			 * for those.
			 */
			ret = rxa_del_intr_queue(rx_adapter,
						dev_info, rx_queue_id);
			if (ret)
				goto err_free_rxqueue;
		}
	}

	if (nb_rx_intr == 0) {
		ret = rxa_free_intr_resources(rx_adapter);
		if (ret)
			goto err_free_rxqueue;
	}

	if (wt == 0) {
		uint16_t i;

		if (rx_queue_id  == -1) {
			for (i = 0; i < dev_info->dev->data->nb_rx_queues; i++)
				dev_info->intr_queue[i] = i;
		} else {
			if (!rxa_intr_queue(dev_info, rx_queue_id))
				dev_info->intr_queue[nb_rx_intr - 1] =
					rx_queue_id;
		}
	}



	rxa_add_queue(rx_adapter, dev_info, rx_queue_id, queue_conf);
	rxa_calc_wrr_sequence(rx_adapter, rx_poll, rx_wrr);

	rte_free(rx_adapter->eth_rx_poll);
	rte_free(rx_adapter->wrr_sched);

	rx_adapter->eth_rx_poll = rx_poll;
	rx_adapter->wrr_sched = rx_wrr;
	rx_adapter->wrr_len = nb_wrr;
	rx_adapter->num_intr_vec += num_intr_vec;
	return 0;

err_free_rxqueue:
	if (rx_queue == NULL) {
		rte_free(dev_info->rx_queue);
		dev_info->rx_queue = NULL;
	}

	rte_free(rx_poll);
	rte_free(rx_wrr);

	return 0;
}

static int
rxa_ctrl(uint8_t id, int start)
{
	struct rte_event_eth_rx_adapter *rx_adapter;
	struct rte_eventdev *dev;
	struct eth_device_info *dev_info;
	uint32_t i;
	int use_service = 0;
	int stop = !start;

	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);
	rx_adapter = rxa_id_to_adapter(id);
	if (rx_adapter == NULL)
		return -EINVAL;

	dev = &rte_eventdevs[rx_adapter->eventdev_id];

	RTE_ETH_FOREACH_DEV(i) {
		dev_info = &rx_adapter->eth_devices[i];
		/* if start  check for num dev queues */
		if (start && !dev_info->nb_dev_queues)
			continue;
		/* if stop check if dev has been started */
		if (stop && !dev_info->dev_rx_started)
			continue;
		use_service |= !dev_info->internal_event_port;
		dev_info->dev_rx_started = start;
		if (dev_info->internal_event_port == 0)
			continue;
		start ? (*dev->dev_ops->eth_rx_adapter_start)(dev,
						&rte_eth_devices[i]) :
			(*dev->dev_ops->eth_rx_adapter_stop)(dev,
						&rte_eth_devices[i]);
	}

	if (use_service) {
		rte_spinlock_lock(&rx_adapter->rx_lock);
		rx_adapter->rxa_started = start;
		rte_service_runstate_set(rx_adapter->service_id, start);
		rte_spinlock_unlock(&rx_adapter->rx_lock);
	}

	return 0;
}

int
rte_event_eth_rx_adapter_create_ext(uint8_t id, uint8_t dev_id,
				rte_event_eth_rx_adapter_conf_cb conf_cb,
				void *conf_arg)
{
	struct rte_event_eth_rx_adapter *rx_adapter;
	int ret;
	int socket_id;
	uint16_t i;
	char mem_name[ETH_RX_ADAPTER_SERVICE_NAME_LEN];
	const uint8_t default_rss_key[] = {
		0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2,
		0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0,
		0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4,
		0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c,
		0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa,
	};

	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);
	RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
	if (conf_cb == NULL)
		return -EINVAL;

	if (event_eth_rx_adapter == NULL) {
		ret = rte_event_eth_rx_adapter_init();
		if (ret)
			return ret;
	}

	rx_adapter = rxa_id_to_adapter(id);
	if (rx_adapter != NULL) {
		RTE_EDEV_LOG_ERR("Eth Rx adapter exists id = %" PRIu8, id);
		return -EEXIST;
	}

	socket_id = rte_event_dev_socket_id(dev_id);
	snprintf(mem_name, ETH_RX_ADAPTER_MEM_NAME_LEN,
		"rte_event_eth_rx_adapter_%d",
		id);

	rx_adapter = rte_zmalloc_socket(mem_name, sizeof(*rx_adapter),
			RTE_CACHE_LINE_SIZE, socket_id);
	if (rx_adapter == NULL) {
		RTE_EDEV_LOG_ERR("failed to get mem for rx adapter");
		return -ENOMEM;
	}

	rx_adapter->eventdev_id = dev_id;
	rx_adapter->socket_id = socket_id;
	rx_adapter->conf_cb = conf_cb;
	rx_adapter->conf_arg = conf_arg;
	rx_adapter->id = id;
	strcpy(rx_adapter->mem_name, mem_name);
	rx_adapter->eth_devices = rte_zmalloc_socket(rx_adapter->mem_name,
					RTE_MAX_ETHPORTS *
					sizeof(struct eth_device_info), 0,
					socket_id);
	rte_convert_rss_key((const uint32_t *)default_rss_key,
			(uint32_t *)rx_adapter->rss_key_be,
			    RTE_DIM(default_rss_key));

	if (rx_adapter->eth_devices == NULL) {
		RTE_EDEV_LOG_ERR("failed to get mem for eth devices\n");
		rte_free(rx_adapter);
		return -ENOMEM;
	}
	rte_spinlock_init(&rx_adapter->rx_lock);
	for (i = 0; i < RTE_MAX_ETHPORTS; i++)
		rx_adapter->eth_devices[i].dev = &rte_eth_devices[i];

	event_eth_rx_adapter[id] = rx_adapter;
	if (conf_cb == rxa_default_conf_cb)
		rx_adapter->default_cb_arg = 1;
	return 0;
}

int
rte_event_eth_rx_adapter_create(uint8_t id, uint8_t dev_id,
		struct rte_event_port_conf *port_config)
{
	struct rte_event_port_conf *pc;
	int ret;

	if (port_config == NULL)
		return -EINVAL;
	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);

	pc = rte_malloc(NULL, sizeof(*pc), 0);
	if (pc == NULL)
		return -ENOMEM;
	*pc = *port_config;
	ret = rte_event_eth_rx_adapter_create_ext(id, dev_id,
					rxa_default_conf_cb,
					pc);
	if (ret)
		rte_free(pc);
	return ret;
}

int
rte_event_eth_rx_adapter_free(uint8_t id)
{
	struct rte_event_eth_rx_adapter *rx_adapter;

	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);

	rx_adapter = rxa_id_to_adapter(id);
	if (rx_adapter == NULL)
		return -EINVAL;

	if (rx_adapter->nb_queues) {
		RTE_EDEV_LOG_ERR("%" PRIu16 " Rx queues not deleted",
				rx_adapter->nb_queues);
		return -EBUSY;
	}

	if (rx_adapter->default_cb_arg)
		rte_free(rx_adapter->conf_arg);
	rte_free(rx_adapter->eth_devices);
	rte_free(rx_adapter);
	event_eth_rx_adapter[id] = NULL;

	return 0;
}

int
rte_event_eth_rx_adapter_queue_add(uint8_t id,
		uint16_t eth_dev_id,
		int32_t rx_queue_id,
		const struct rte_event_eth_rx_adapter_queue_conf *queue_conf)
{
	int ret;
	uint32_t cap;
	struct rte_event_eth_rx_adapter *rx_adapter;
	struct rte_eventdev *dev;
	struct eth_device_info *dev_info;

	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);
	RTE_ETH_VALID_PORTID_OR_ERR_RET(eth_dev_id, -EINVAL);

	rx_adapter = rxa_id_to_adapter(id);
	if ((rx_adapter == NULL) || (queue_conf == NULL))
		return -EINVAL;

	dev = &rte_eventdevs[rx_adapter->eventdev_id];
	ret = rte_event_eth_rx_adapter_caps_get(rx_adapter->eventdev_id,
						eth_dev_id,
						&cap);
	if (ret) {
		RTE_EDEV_LOG_ERR("Failed to get adapter caps edev %" PRIu8
			"eth port %" PRIu16, id, eth_dev_id);
		return ret;
	}

	if ((cap & RTE_EVENT_ETH_RX_ADAPTER_CAP_OVERRIDE_FLOW_ID) == 0
		&& (queue_conf->rx_queue_flags &
			RTE_EVENT_ETH_RX_ADAPTER_QUEUE_FLOW_ID_VALID)) {
		RTE_EDEV_LOG_ERR("Flow ID override is not supported,"
				" eth port: %" PRIu16 " adapter id: %" PRIu8,
				eth_dev_id, id);
		return -EINVAL;
	}

	if ((cap & RTE_EVENT_ETH_RX_ADAPTER_CAP_MULTI_EVENTQ) == 0 &&
		(rx_queue_id != -1)) {
		RTE_EDEV_LOG_ERR("Rx queues can only be connected to single "
			"event queue, eth port: %" PRIu16 " adapter id: %"
			PRIu8, eth_dev_id, id);
		return -EINVAL;
	}

	if (rx_queue_id != -1 && (uint16_t)rx_queue_id >=
			rte_eth_devices[eth_dev_id].data->nb_rx_queues) {
		RTE_EDEV_LOG_ERR("Invalid rx queue_id %" PRIu16,
			 (uint16_t)rx_queue_id);
		return -EINVAL;
	}

	dev_info = &rx_adapter->eth_devices[eth_dev_id];

	if (cap & RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT) {
		RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->eth_rx_adapter_queue_add,
					-ENOTSUP);
		if (dev_info->rx_queue == NULL) {
			dev_info->rx_queue =
			    rte_zmalloc_socket(rx_adapter->mem_name,
					dev_info->dev->data->nb_rx_queues *
					sizeof(struct eth_rx_queue_info), 0,
					rx_adapter->socket_id);
			if (dev_info->rx_queue == NULL)
				return -ENOMEM;
		}

		ret = (*dev->dev_ops->eth_rx_adapter_queue_add)(dev,
				&rte_eth_devices[eth_dev_id],
				rx_queue_id, queue_conf);
		if (ret == 0) {
			dev_info->internal_event_port = 1;
			rxa_update_queue(rx_adapter,
					&rx_adapter->eth_devices[eth_dev_id],
					rx_queue_id,
					1);
		}
	} else {
		rte_spinlock_lock(&rx_adapter->rx_lock);
		dev_info->internal_event_port = 0;
		ret = rxa_init_service(rx_adapter, id);
		if (ret == 0) {
			uint32_t service_id = rx_adapter->service_id;
			ret = rxa_sw_add(rx_adapter, eth_dev_id, rx_queue_id,
					queue_conf);
			rte_service_component_runstate_set(service_id,
				rxa_sw_adapter_queue_count(rx_adapter));
		}
		rte_spinlock_unlock(&rx_adapter->rx_lock);
	}

	if (ret)
		return ret;

	return 0;
}

int
rte_event_eth_rx_adapter_queue_del(uint8_t id, uint16_t eth_dev_id,
				int32_t rx_queue_id)
{
	int ret = 0;
	struct rte_eventdev *dev;
	struct rte_event_eth_rx_adapter *rx_adapter;
	struct eth_device_info *dev_info;
	uint32_t cap;
	uint32_t nb_rx_poll = 0;
	uint32_t nb_wrr = 0;
	uint32_t nb_rx_intr;
	struct eth_rx_poll_entry *rx_poll = NULL;
	uint32_t *rx_wrr = NULL;
	int num_intr_vec;

	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);
	RTE_ETH_VALID_PORTID_OR_ERR_RET(eth_dev_id, -EINVAL);

	rx_adapter = rxa_id_to_adapter(id);
	if (rx_adapter == NULL)
		return -EINVAL;

	dev = &rte_eventdevs[rx_adapter->eventdev_id];
	ret = rte_event_eth_rx_adapter_caps_get(rx_adapter->eventdev_id,
						eth_dev_id,
						&cap);
	if (ret)
		return ret;

	if (rx_queue_id != -1 && (uint16_t)rx_queue_id >=
		rte_eth_devices[eth_dev_id].data->nb_rx_queues) {
		RTE_EDEV_LOG_ERR("Invalid rx queue_id %" PRIu16,
			 (uint16_t)rx_queue_id);
		return -EINVAL;
	}

	dev_info = &rx_adapter->eth_devices[eth_dev_id];

	if (cap & RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT) {
		RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->eth_rx_adapter_queue_del,
				 -ENOTSUP);
		ret = (*dev->dev_ops->eth_rx_adapter_queue_del)(dev,
						&rte_eth_devices[eth_dev_id],
						rx_queue_id);
		if (ret == 0) {
			rxa_update_queue(rx_adapter,
					&rx_adapter->eth_devices[eth_dev_id],
					rx_queue_id,
					0);
			if (dev_info->nb_dev_queues == 0) {
				rte_free(dev_info->rx_queue);
				dev_info->rx_queue = NULL;
			}
		}
	} else {
		rxa_calc_nb_post_del(rx_adapter, dev_info, rx_queue_id,
			&nb_rx_poll, &nb_rx_intr, &nb_wrr);

		ret = rxa_alloc_poll_arrays(rx_adapter, nb_rx_poll, nb_wrr,
			&rx_poll, &rx_wrr);
		if (ret)
			return ret;

		rte_spinlock_lock(&rx_adapter->rx_lock);

		num_intr_vec = 0;
		if (rx_adapter->num_rx_intr > nb_rx_intr) {

			num_intr_vec = rxa_nb_intr_vect(dev_info,
						rx_queue_id, 0);
			ret = rxa_del_intr_queue(rx_adapter, dev_info,
					rx_queue_id);
			if (ret)
				goto unlock_ret;
		}

		if (nb_rx_intr == 0) {
			ret = rxa_free_intr_resources(rx_adapter);
			if (ret)
				goto unlock_ret;
		}

		rxa_sw_del(rx_adapter, dev_info, rx_queue_id);
		rxa_calc_wrr_sequence(rx_adapter, rx_poll, rx_wrr);

		rte_free(rx_adapter->eth_rx_poll);
		rte_free(rx_adapter->wrr_sched);

		if (nb_rx_intr == 0) {
			rte_free(dev_info->intr_queue);
			dev_info->intr_queue = NULL;
		}

		rx_adapter->eth_rx_poll = rx_poll;
		rx_adapter->wrr_sched = rx_wrr;
		rx_adapter->wrr_len = nb_wrr;
		rx_adapter->num_intr_vec += num_intr_vec;

		if (dev_info->nb_dev_queues == 0) {
			rte_free(dev_info->rx_queue);
			dev_info->rx_queue = NULL;
		}
unlock_ret:
		rte_spinlock_unlock(&rx_adapter->rx_lock);
		if (ret) {
			rte_free(rx_poll);
			rte_free(rx_wrr);
			return ret;
		}

		rte_service_component_runstate_set(rx_adapter->service_id,
				rxa_sw_adapter_queue_count(rx_adapter));
	}

	return ret;
}

int
rte_event_eth_rx_adapter_start(uint8_t id)
{
	return rxa_ctrl(id, 1);
}

int
rte_event_eth_rx_adapter_stop(uint8_t id)
{
	return rxa_ctrl(id, 0);
}

int __rte_experimental
rte_event_eth_rx_adapter_stats_get(uint8_t id,
			       struct rte_event_eth_rx_adapter_stats *stats)
{
	struct rte_event_eth_rx_adapter *rx_adapter;
	struct rte_event_eth_rx_adapter_stats dev_stats_sum = { 0 };
	struct rte_event_eth_rx_adapter_stats dev_stats;
	struct rte_eventdev *dev;
	struct eth_device_info *dev_info;
	uint32_t i;
	int ret;

	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);

	rx_adapter = rxa_id_to_adapter(id);
	if (rx_adapter  == NULL || stats == NULL)
		return -EINVAL;

	dev = &rte_eventdevs[rx_adapter->eventdev_id];
	memset(stats, 0, sizeof(*stats));
	RTE_ETH_FOREACH_DEV(i) {
		dev_info = &rx_adapter->eth_devices[i];
		if (dev_info->internal_event_port == 0 ||
			dev->dev_ops->eth_rx_adapter_stats_get == NULL)
			continue;
		ret = (*dev->dev_ops->eth_rx_adapter_stats_get)(dev,
						&rte_eth_devices[i],
						&dev_stats);
		if (ret)
			continue;
		dev_stats_sum.rx_packets += dev_stats.rx_packets;
		dev_stats_sum.rx_enq_count += dev_stats.rx_enq_count;
	}

	if (rx_adapter->service_inited)
		*stats = rx_adapter->stats;

	stats->rx_packets += dev_stats_sum.rx_packets;
	stats->rx_enq_count += dev_stats_sum.rx_enq_count;
	return 0;
}

int
rte_event_eth_rx_adapter_stats_reset(uint8_t id)
{
	struct rte_event_eth_rx_adapter *rx_adapter;
	struct rte_eventdev *dev;
	struct eth_device_info *dev_info;
	uint32_t i;

	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);

	rx_adapter = rxa_id_to_adapter(id);
	if (rx_adapter == NULL)
		return -EINVAL;

	dev = &rte_eventdevs[rx_adapter->eventdev_id];
	RTE_ETH_FOREACH_DEV(i) {
		dev_info = &rx_adapter->eth_devices[i];
		if (dev_info->internal_event_port == 0 ||
			dev->dev_ops->eth_rx_adapter_stats_reset == NULL)
			continue;
		(*dev->dev_ops->eth_rx_adapter_stats_reset)(dev,
							&rte_eth_devices[i]);
	}

	memset(&rx_adapter->stats, 0, sizeof(rx_adapter->stats));
	return 0;
}

int
rte_event_eth_rx_adapter_service_id_get(uint8_t id, uint32_t *service_id)
{
	struct rte_event_eth_rx_adapter *rx_adapter;

	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);

	rx_adapter = rxa_id_to_adapter(id);
	if (rx_adapter == NULL || service_id == NULL)
		return -EINVAL;

	if (rx_adapter->service_inited)
		*service_id = rx_adapter->service_id;

	return rx_adapter->service_inited ? 0 : -ESRCH;
}

int __rte_experimental
rte_event_eth_rx_adapter_cb_register(uint8_t id,
					uint16_t eth_dev_id,
					rte_event_eth_rx_adapter_cb_fn cb_fn,
					void *cb_arg)
{
	struct rte_event_eth_rx_adapter *rx_adapter;
	struct eth_device_info *dev_info;
	uint32_t cap;
	int ret;

	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);
	RTE_ETH_VALID_PORTID_OR_ERR_RET(eth_dev_id, -EINVAL);

	rx_adapter = rxa_id_to_adapter(id);
	if (rx_adapter == NULL)
		return -EINVAL;

	dev_info = &rx_adapter->eth_devices[eth_dev_id];
	if (dev_info->rx_queue == NULL)
		return -EINVAL;

	ret = rte_event_eth_rx_adapter_caps_get(rx_adapter->eventdev_id,
						eth_dev_id,
						&cap);
	if (ret) {
		RTE_EDEV_LOG_ERR("Failed to get adapter caps edev %" PRIu8
			"eth port %" PRIu16, id, eth_dev_id);
		return ret;
	}

	if (cap & RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT) {
		RTE_EDEV_LOG_ERR("Rx callback not supported for eth port %"
				PRIu16, eth_dev_id);
		return -EINVAL;
	}

	rte_spinlock_lock(&rx_adapter->rx_lock);
	dev_info->cb_fn = cb_fn;
	dev_info->cb_arg = cb_arg;
	rte_spinlock_unlock(&rx_adapter->rx_lock);

	return 0;
}