1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2017 Intel Corporation
9 #include <rte_string_fns.h>
10 #include <rte_ethdev_driver.h>
11 #include <rte_ethdev_vdev.h>
13 #include <rte_kvargs.h>
14 #include <rte_malloc.h>
15 #include <rte_bus_vdev.h>
17 /* Only single queue supported */
18 #define KNI_MAX_QUEUE_PER_PORT 1
20 #define MAX_KNI_PORTS 8
22 #define KNI_ETHER_MTU(mbuf_size) \
23 ((mbuf_size) - ETHER_HDR_LEN) /**< Ethernet MTU. */
25 #define ETH_KNI_NO_REQUEST_THREAD_ARG "no_request_thread"
26 static const char * const valid_arguments
[] = {
27 ETH_KNI_NO_REQUEST_THREAD_ARG
,
32 int no_request_thread
;
35 struct pmd_queue_stats
{
42 struct pmd_internals
*internals
;
43 struct rte_mempool
*mb_pool
;
45 struct pmd_queue_stats rx
;
46 struct pmd_queue_stats tx
;
49 struct pmd_internals
{
55 int no_request_thread
;
57 struct ether_addr eth_addr
;
59 struct pmd_queue rx_queues
[KNI_MAX_QUEUE_PER_PORT
];
60 struct pmd_queue tx_queues
[KNI_MAX_QUEUE_PER_PORT
];
63 static const struct rte_eth_link pmd_link
= {
64 .link_speed
= ETH_SPEED_NUM_10G
,
65 .link_duplex
= ETH_LINK_FULL_DUPLEX
,
66 .link_status
= ETH_LINK_DOWN
,
67 .link_autoneg
= ETH_LINK_FIXED
,
69 static int is_kni_initialized
;
71 static int eth_kni_logtype
;
73 #define PMD_LOG(level, fmt, args...) \
74 rte_log(RTE_LOG_ ## level, eth_kni_logtype, \
75 "%s(): " fmt "\n", __func__, ##args)
77 eth_kni_rx(void *q
, struct rte_mbuf
**bufs
, uint16_t nb_bufs
)
79 struct pmd_queue
*kni_q
= q
;
80 struct rte_kni
*kni
= kni_q
->internals
->kni
;
83 nb_pkts
= rte_kni_rx_burst(kni
, bufs
, nb_bufs
);
85 kni_q
->rx
.pkts
+= nb_pkts
;
86 kni_q
->rx
.err_pkts
+= nb_bufs
- nb_pkts
;
92 eth_kni_tx(void *q
, struct rte_mbuf
**bufs
, uint16_t nb_bufs
)
94 struct pmd_queue
*kni_q
= q
;
95 struct rte_kni
*kni
= kni_q
->internals
->kni
;
98 nb_pkts
= rte_kni_tx_burst(kni
, bufs
, nb_bufs
);
100 kni_q
->tx
.pkts
+= nb_pkts
;
101 kni_q
->tx
.err_pkts
+= nb_bufs
- nb_pkts
;
107 kni_handle_request(void *param
)
109 struct pmd_internals
*internals
= param
;
112 while (!internals
->stop_thread
) {
113 rte_kni_handle_request(internals
->kni
);
121 eth_kni_start(struct rte_eth_dev
*dev
)
123 struct pmd_internals
*internals
= dev
->data
->dev_private
;
124 uint16_t port_id
= dev
->data
->port_id
;
125 struct rte_mempool
*mb_pool
;
126 struct rte_kni_conf conf
;
127 const char *name
= dev
->device
->name
+ 4; /* remove net_ */
129 mb_pool
= internals
->rx_queues
[0].mb_pool
;
130 strlcpy(conf
.name
, name
, RTE_KNI_NAMESIZE
);
132 conf
.group_id
= port_id
;
134 rte_pktmbuf_data_room_size(mb_pool
) - RTE_PKTMBUF_HEADROOM
;
135 conf
.mtu
= KNI_ETHER_MTU(conf
.mbuf_size
);
137 internals
->kni
= rte_kni_alloc(mb_pool
, &conf
, NULL
);
138 if (internals
->kni
== NULL
) {
140 "Fail to create kni interface for port: %d",
149 eth_kni_dev_start(struct rte_eth_dev
*dev
)
151 struct pmd_internals
*internals
= dev
->data
->dev_private
;
154 if (internals
->is_kni_started
== 0) {
155 ret
= eth_kni_start(dev
);
158 internals
->is_kni_started
= 1;
161 if (internals
->no_request_thread
== 0) {
162 ret
= rte_ctrl_thread_create(&internals
->thread
,
163 "kni_handle_req", NULL
,
164 kni_handle_request
, internals
);
167 "Fail to create kni request thread");
172 dev
->data
->dev_link
.link_status
= 1;
178 eth_kni_dev_stop(struct rte_eth_dev
*dev
)
180 struct pmd_internals
*internals
= dev
->data
->dev_private
;
183 if (internals
->no_request_thread
== 0) {
184 internals
->stop_thread
= 1;
186 ret
= pthread_cancel(internals
->thread
);
188 PMD_LOG(ERR
, "Can't cancel the thread");
190 ret
= pthread_join(internals
->thread
, NULL
);
192 PMD_LOG(ERR
, "Can't join the thread");
194 internals
->stop_thread
= 0;
197 dev
->data
->dev_link
.link_status
= 0;
201 eth_kni_dev_configure(struct rte_eth_dev
*dev __rte_unused
)
207 eth_kni_dev_info(struct rte_eth_dev
*dev __rte_unused
,
208 struct rte_eth_dev_info
*dev_info
)
210 dev_info
->max_mac_addrs
= 1;
211 dev_info
->max_rx_pktlen
= UINT32_MAX
;
212 dev_info
->max_rx_queues
= KNI_MAX_QUEUE_PER_PORT
;
213 dev_info
->max_tx_queues
= KNI_MAX_QUEUE_PER_PORT
;
214 dev_info
->min_rx_bufsize
= 0;
218 eth_kni_rx_queue_setup(struct rte_eth_dev
*dev
,
219 uint16_t rx_queue_id
,
220 uint16_t nb_rx_desc __rte_unused
,
221 unsigned int socket_id __rte_unused
,
222 const struct rte_eth_rxconf
*rx_conf __rte_unused
,
223 struct rte_mempool
*mb_pool
)
225 struct pmd_internals
*internals
= dev
->data
->dev_private
;
228 q
= &internals
->rx_queues
[rx_queue_id
];
229 q
->internals
= internals
;
230 q
->mb_pool
= mb_pool
;
232 dev
->data
->rx_queues
[rx_queue_id
] = q
;
238 eth_kni_tx_queue_setup(struct rte_eth_dev
*dev
,
239 uint16_t tx_queue_id
,
240 uint16_t nb_tx_desc __rte_unused
,
241 unsigned int socket_id __rte_unused
,
242 const struct rte_eth_txconf
*tx_conf __rte_unused
)
244 struct pmd_internals
*internals
= dev
->data
->dev_private
;
247 q
= &internals
->tx_queues
[tx_queue_id
];
248 q
->internals
= internals
;
250 dev
->data
->tx_queues
[tx_queue_id
] = q
;
256 eth_kni_queue_release(void *q __rte_unused
)
261 eth_kni_link_update(struct rte_eth_dev
*dev __rte_unused
,
262 int wait_to_complete __rte_unused
)
268 eth_kni_stats_get(struct rte_eth_dev
*dev
, struct rte_eth_stats
*stats
)
270 unsigned long rx_packets_total
= 0, rx_bytes_total
= 0;
271 unsigned long tx_packets_total
= 0, tx_bytes_total
= 0;
272 struct rte_eth_dev_data
*data
= dev
->data
;
273 unsigned long tx_packets_err_total
= 0;
274 unsigned int i
, num_stats
;
277 num_stats
= RTE_MIN((unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS
,
279 for (i
= 0; i
< num_stats
; i
++) {
280 q
= data
->rx_queues
[i
];
281 stats
->q_ipackets
[i
] = q
->rx
.pkts
;
282 stats
->q_ibytes
[i
] = q
->rx
.bytes
;
283 rx_packets_total
+= stats
->q_ipackets
[i
];
284 rx_bytes_total
+= stats
->q_ibytes
[i
];
287 num_stats
= RTE_MIN((unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS
,
289 for (i
= 0; i
< num_stats
; i
++) {
290 q
= data
->tx_queues
[i
];
291 stats
->q_opackets
[i
] = q
->tx
.pkts
;
292 stats
->q_obytes
[i
] = q
->tx
.bytes
;
293 stats
->q_errors
[i
] = q
->tx
.err_pkts
;
294 tx_packets_total
+= stats
->q_opackets
[i
];
295 tx_bytes_total
+= stats
->q_obytes
[i
];
296 tx_packets_err_total
+= stats
->q_errors
[i
];
299 stats
->ipackets
= rx_packets_total
;
300 stats
->ibytes
= rx_bytes_total
;
301 stats
->opackets
= tx_packets_total
;
302 stats
->obytes
= tx_bytes_total
;
303 stats
->oerrors
= tx_packets_err_total
;
309 eth_kni_stats_reset(struct rte_eth_dev
*dev
)
311 struct rte_eth_dev_data
*data
= dev
->data
;
315 for (i
= 0; i
< data
->nb_rx_queues
; i
++) {
316 q
= data
->rx_queues
[i
];
320 for (i
= 0; i
< data
->nb_tx_queues
; i
++) {
321 q
= data
->tx_queues
[i
];
328 static const struct eth_dev_ops eth_kni_ops
= {
329 .dev_start
= eth_kni_dev_start
,
330 .dev_stop
= eth_kni_dev_stop
,
331 .dev_configure
= eth_kni_dev_configure
,
332 .dev_infos_get
= eth_kni_dev_info
,
333 .rx_queue_setup
= eth_kni_rx_queue_setup
,
334 .tx_queue_setup
= eth_kni_tx_queue_setup
,
335 .rx_queue_release
= eth_kni_queue_release
,
336 .tx_queue_release
= eth_kni_queue_release
,
337 .link_update
= eth_kni_link_update
,
338 .stats_get
= eth_kni_stats_get
,
339 .stats_reset
= eth_kni_stats_reset
,
342 static struct rte_eth_dev
*
343 eth_kni_create(struct rte_vdev_device
*vdev
,
344 struct eth_kni_args
*args
,
345 unsigned int numa_node
)
347 struct pmd_internals
*internals
;
348 struct rte_eth_dev_data
*data
;
349 struct rte_eth_dev
*eth_dev
;
351 PMD_LOG(INFO
, "Creating kni ethdev on numa socket %u",
354 /* reserve an ethdev entry */
355 eth_dev
= rte_eth_vdev_allocate(vdev
, sizeof(*internals
));
359 internals
= eth_dev
->data
->dev_private
;
360 data
= eth_dev
->data
;
361 data
->nb_rx_queues
= 1;
362 data
->nb_tx_queues
= 1;
363 data
->dev_link
= pmd_link
;
364 data
->mac_addrs
= &internals
->eth_addr
;
366 eth_random_addr(internals
->eth_addr
.addr_bytes
);
368 eth_dev
->dev_ops
= ð_kni_ops
;
370 internals
->no_request_thread
= args
->no_request_thread
;
378 if (is_kni_initialized
== 0)
379 rte_kni_init(MAX_KNI_PORTS
);
381 is_kni_initialized
++;
387 eth_kni_kvargs_process(struct eth_kni_args
*args
, const char *params
)
389 struct rte_kvargs
*kvlist
;
391 kvlist
= rte_kvargs_parse(params
, valid_arguments
);
395 memset(args
, 0, sizeof(struct eth_kni_args
));
397 if (rte_kvargs_count(kvlist
, ETH_KNI_NO_REQUEST_THREAD_ARG
) == 1)
398 args
->no_request_thread
= 1;
400 rte_kvargs_free(kvlist
);
406 eth_kni_probe(struct rte_vdev_device
*vdev
)
408 struct rte_eth_dev
*eth_dev
;
409 struct eth_kni_args args
;
414 name
= rte_vdev_device_name(vdev
);
415 params
= rte_vdev_device_args(vdev
);
416 PMD_LOG(INFO
, "Initializing eth_kni for %s", name
);
418 if (rte_eal_process_type() == RTE_PROC_SECONDARY
) {
419 eth_dev
= rte_eth_dev_attach_secondary(name
);
421 PMD_LOG(ERR
, "Failed to probe %s", name
);
424 /* TODO: request info from primary to set up Rx and Tx */
425 eth_dev
->dev_ops
= ð_kni_ops
;
426 eth_dev
->device
= &vdev
->device
;
427 rte_eth_dev_probing_finish(eth_dev
);
431 ret
= eth_kni_kvargs_process(&args
, params
);
439 eth_dev
= eth_kni_create(vdev
, &args
, rte_socket_id());
443 eth_dev
->rx_pkt_burst
= eth_kni_rx
;
444 eth_dev
->tx_pkt_burst
= eth_kni_tx
;
446 rte_eth_dev_probing_finish(eth_dev
);
450 is_kni_initialized
--;
451 if (is_kni_initialized
== 0)
457 eth_kni_remove(struct rte_vdev_device
*vdev
)
459 struct rte_eth_dev
*eth_dev
;
460 struct pmd_internals
*internals
;
464 name
= rte_vdev_device_name(vdev
);
465 PMD_LOG(INFO
, "Un-Initializing eth_kni for %s", name
);
467 /* find the ethdev entry */
468 eth_dev
= rte_eth_dev_allocated(name
);
472 /* mac_addrs must not be freed alone because part of dev_private */
473 eth_dev
->data
->mac_addrs
= NULL
;
475 if (rte_eal_process_type() != RTE_PROC_PRIMARY
)
476 return rte_eth_dev_release_port(eth_dev
);
478 eth_kni_dev_stop(eth_dev
);
480 internals
= eth_dev
->data
->dev_private
;
481 ret
= rte_kni_release(internals
->kni
);
483 PMD_LOG(WARNING
, "Not able to release kni for %s", name
);
485 rte_eth_dev_release_port(eth_dev
);
487 is_kni_initialized
--;
488 if (is_kni_initialized
== 0)
494 static struct rte_vdev_driver eth_kni_drv
= {
495 .probe
= eth_kni_probe
,
496 .remove
= eth_kni_remove
,
499 RTE_PMD_REGISTER_VDEV(net_kni
, eth_kni_drv
);
500 RTE_PMD_REGISTER_PARAM_STRING(net_kni
, ETH_KNI_NO_REQUEST_THREAD_ARG
"=<int>");
502 RTE_INIT(eth_kni_init_log
)
504 eth_kni_logtype
= rte_log_register("pmd.net.kni");
505 if (eth_kni_logtype
>= 0)
506 rte_log_set_level(eth_kni_logtype
, RTE_LOG_NOTICE
);