1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2017 Intel Corporation
9 #include <rte_ethdev_driver.h>
10 #include <rte_ethdev_vdev.h>
12 #include <rte_kvargs.h>
13 #include <rte_malloc.h>
14 #include <rte_bus_vdev.h>
16 /* Only single queue supported */
17 #define KNI_MAX_QUEUE_PER_PORT 1
19 #define MAX_PACKET_SZ 2048
20 #define MAX_KNI_PORTS 8
22 #define ETH_KNI_NO_REQUEST_THREAD_ARG "no_request_thread"
23 static const char * const valid_arguments
[] = {
24 ETH_KNI_NO_REQUEST_THREAD_ARG
,
29 int no_request_thread
;
32 struct pmd_queue_stats
{
39 struct pmd_internals
*internals
;
40 struct rte_mempool
*mb_pool
;
42 struct pmd_queue_stats rx
;
43 struct pmd_queue_stats tx
;
46 struct pmd_internals
{
52 int no_request_thread
;
54 struct ether_addr eth_addr
;
56 struct pmd_queue rx_queues
[KNI_MAX_QUEUE_PER_PORT
];
57 struct pmd_queue tx_queues
[KNI_MAX_QUEUE_PER_PORT
];
60 static const struct rte_eth_link pmd_link
= {
61 .link_speed
= ETH_SPEED_NUM_10G
,
62 .link_duplex
= ETH_LINK_FULL_DUPLEX
,
63 .link_status
= ETH_LINK_DOWN
,
64 .link_autoneg
= ETH_LINK_FIXED
,
66 static int is_kni_initialized
;
68 static int eth_kni_logtype
;
70 #define PMD_LOG(level, fmt, args...) \
71 rte_log(RTE_LOG_ ## level, eth_kni_logtype, \
72 "%s(): " fmt "\n", __func__, ##args)
74 eth_kni_rx(void *q
, struct rte_mbuf
**bufs
, uint16_t nb_bufs
)
76 struct pmd_queue
*kni_q
= q
;
77 struct rte_kni
*kni
= kni_q
->internals
->kni
;
80 nb_pkts
= rte_kni_rx_burst(kni
, bufs
, nb_bufs
);
82 kni_q
->rx
.pkts
+= nb_pkts
;
83 kni_q
->rx
.err_pkts
+= nb_bufs
- nb_pkts
;
89 eth_kni_tx(void *q
, struct rte_mbuf
**bufs
, uint16_t nb_bufs
)
91 struct pmd_queue
*kni_q
= q
;
92 struct rte_kni
*kni
= kni_q
->internals
->kni
;
95 nb_pkts
= rte_kni_tx_burst(kni
, bufs
, nb_bufs
);
97 kni_q
->tx
.pkts
+= nb_pkts
;
98 kni_q
->tx
.err_pkts
+= nb_bufs
- nb_pkts
;
104 kni_handle_request(void *param
)
106 struct pmd_internals
*internals
= param
;
109 while (!internals
->stop_thread
) {
110 rte_kni_handle_request(internals
->kni
);
118 eth_kni_start(struct rte_eth_dev
*dev
)
120 struct pmd_internals
*internals
= dev
->data
->dev_private
;
121 uint16_t port_id
= dev
->data
->port_id
;
122 struct rte_mempool
*mb_pool
;
123 struct rte_kni_conf conf
;
124 const char *name
= dev
->device
->name
+ 4; /* remove net_ */
126 snprintf(conf
.name
, RTE_KNI_NAMESIZE
, "%s", name
);
128 conf
.group_id
= port_id
;
129 conf
.mbuf_size
= MAX_PACKET_SZ
;
130 mb_pool
= internals
->rx_queues
[0].mb_pool
;
132 internals
->kni
= rte_kni_alloc(mb_pool
, &conf
, NULL
);
133 if (internals
->kni
== NULL
) {
135 "Fail to create kni interface for port: %d",
144 eth_kni_dev_start(struct rte_eth_dev
*dev
)
146 struct pmd_internals
*internals
= dev
->data
->dev_private
;
149 if (internals
->is_kni_started
== 0) {
150 ret
= eth_kni_start(dev
);
153 internals
->is_kni_started
= 1;
156 if (internals
->no_request_thread
== 0) {
157 ret
= rte_ctrl_thread_create(&internals
->thread
,
158 "kni_handle_req", NULL
,
159 kni_handle_request
, internals
);
162 "Fail to create kni request thread");
167 dev
->data
->dev_link
.link_status
= 1;
173 eth_kni_dev_stop(struct rte_eth_dev
*dev
)
175 struct pmd_internals
*internals
= dev
->data
->dev_private
;
178 if (internals
->no_request_thread
== 0) {
179 internals
->stop_thread
= 1;
181 ret
= pthread_cancel(internals
->thread
);
183 PMD_LOG(ERR
, "Can't cancel the thread");
185 ret
= pthread_join(internals
->thread
, NULL
);
187 PMD_LOG(ERR
, "Can't join the thread");
189 internals
->stop_thread
= 0;
192 dev
->data
->dev_link
.link_status
= 0;
196 eth_kni_dev_configure(struct rte_eth_dev
*dev __rte_unused
)
202 eth_kni_dev_info(struct rte_eth_dev
*dev __rte_unused
,
203 struct rte_eth_dev_info
*dev_info
)
205 dev_info
->max_mac_addrs
= 1;
206 dev_info
->max_rx_pktlen
= UINT32_MAX
;
207 dev_info
->max_rx_queues
= KNI_MAX_QUEUE_PER_PORT
;
208 dev_info
->max_tx_queues
= KNI_MAX_QUEUE_PER_PORT
;
209 dev_info
->min_rx_bufsize
= 0;
210 dev_info
->rx_offload_capa
= DEV_RX_OFFLOAD_CRC_STRIP
;
214 eth_kni_rx_queue_setup(struct rte_eth_dev
*dev
,
215 uint16_t rx_queue_id
,
216 uint16_t nb_rx_desc __rte_unused
,
217 unsigned int socket_id __rte_unused
,
218 const struct rte_eth_rxconf
*rx_conf __rte_unused
,
219 struct rte_mempool
*mb_pool
)
221 struct pmd_internals
*internals
= dev
->data
->dev_private
;
224 q
= &internals
->rx_queues
[rx_queue_id
];
225 q
->internals
= internals
;
226 q
->mb_pool
= mb_pool
;
228 dev
->data
->rx_queues
[rx_queue_id
] = q
;
234 eth_kni_tx_queue_setup(struct rte_eth_dev
*dev
,
235 uint16_t tx_queue_id
,
236 uint16_t nb_tx_desc __rte_unused
,
237 unsigned int socket_id __rte_unused
,
238 const struct rte_eth_txconf
*tx_conf __rte_unused
)
240 struct pmd_internals
*internals
= dev
->data
->dev_private
;
243 q
= &internals
->tx_queues
[tx_queue_id
];
244 q
->internals
= internals
;
246 dev
->data
->tx_queues
[tx_queue_id
] = q
;
252 eth_kni_queue_release(void *q __rte_unused
)
257 eth_kni_link_update(struct rte_eth_dev
*dev __rte_unused
,
258 int wait_to_complete __rte_unused
)
264 eth_kni_stats_get(struct rte_eth_dev
*dev
, struct rte_eth_stats
*stats
)
266 unsigned long rx_packets_total
= 0, rx_bytes_total
= 0;
267 unsigned long tx_packets_total
= 0, tx_bytes_total
= 0;
268 struct rte_eth_dev_data
*data
= dev
->data
;
269 unsigned long tx_packets_err_total
= 0;
270 unsigned int i
, num_stats
;
273 num_stats
= RTE_MIN((unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS
,
275 for (i
= 0; i
< num_stats
; i
++) {
276 q
= data
->rx_queues
[i
];
277 stats
->q_ipackets
[i
] = q
->rx
.pkts
;
278 stats
->q_ibytes
[i
] = q
->rx
.bytes
;
279 rx_packets_total
+= stats
->q_ipackets
[i
];
280 rx_bytes_total
+= stats
->q_ibytes
[i
];
283 num_stats
= RTE_MIN((unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS
,
285 for (i
= 0; i
< num_stats
; i
++) {
286 q
= data
->tx_queues
[i
];
287 stats
->q_opackets
[i
] = q
->tx
.pkts
;
288 stats
->q_obytes
[i
] = q
->tx
.bytes
;
289 stats
->q_errors
[i
] = q
->tx
.err_pkts
;
290 tx_packets_total
+= stats
->q_opackets
[i
];
291 tx_bytes_total
+= stats
->q_obytes
[i
];
292 tx_packets_err_total
+= stats
->q_errors
[i
];
295 stats
->ipackets
= rx_packets_total
;
296 stats
->ibytes
= rx_bytes_total
;
297 stats
->opackets
= tx_packets_total
;
298 stats
->obytes
= tx_bytes_total
;
299 stats
->oerrors
= tx_packets_err_total
;
305 eth_kni_stats_reset(struct rte_eth_dev
*dev
)
307 struct rte_eth_dev_data
*data
= dev
->data
;
311 for (i
= 0; i
< data
->nb_rx_queues
; i
++) {
312 q
= data
->rx_queues
[i
];
316 for (i
= 0; i
< data
->nb_tx_queues
; i
++) {
317 q
= data
->tx_queues
[i
];
324 static const struct eth_dev_ops eth_kni_ops
= {
325 .dev_start
= eth_kni_dev_start
,
326 .dev_stop
= eth_kni_dev_stop
,
327 .dev_configure
= eth_kni_dev_configure
,
328 .dev_infos_get
= eth_kni_dev_info
,
329 .rx_queue_setup
= eth_kni_rx_queue_setup
,
330 .tx_queue_setup
= eth_kni_tx_queue_setup
,
331 .rx_queue_release
= eth_kni_queue_release
,
332 .tx_queue_release
= eth_kni_queue_release
,
333 .link_update
= eth_kni_link_update
,
334 .stats_get
= eth_kni_stats_get
,
335 .stats_reset
= eth_kni_stats_reset
,
338 static struct rte_eth_dev
*
339 eth_kni_create(struct rte_vdev_device
*vdev
,
340 struct eth_kni_args
*args
,
341 unsigned int numa_node
)
343 struct pmd_internals
*internals
;
344 struct rte_eth_dev_data
*data
;
345 struct rte_eth_dev
*eth_dev
;
347 PMD_LOG(INFO
, "Creating kni ethdev on numa socket %u",
350 /* reserve an ethdev entry */
351 eth_dev
= rte_eth_vdev_allocate(vdev
, sizeof(*internals
));
355 internals
= eth_dev
->data
->dev_private
;
356 data
= eth_dev
->data
;
357 data
->nb_rx_queues
= 1;
358 data
->nb_tx_queues
= 1;
359 data
->dev_link
= pmd_link
;
360 data
->mac_addrs
= &internals
->eth_addr
;
362 eth_random_addr(internals
->eth_addr
.addr_bytes
);
364 eth_dev
->dev_ops
= ð_kni_ops
;
366 internals
->no_request_thread
= args
->no_request_thread
;
374 if (is_kni_initialized
== 0)
375 rte_kni_init(MAX_KNI_PORTS
);
377 is_kni_initialized
++;
383 eth_kni_kvargs_process(struct eth_kni_args
*args
, const char *params
)
385 struct rte_kvargs
*kvlist
;
387 kvlist
= rte_kvargs_parse(params
, valid_arguments
);
391 memset(args
, 0, sizeof(struct eth_kni_args
));
393 if (rte_kvargs_count(kvlist
, ETH_KNI_NO_REQUEST_THREAD_ARG
) == 1)
394 args
->no_request_thread
= 1;
396 rte_kvargs_free(kvlist
);
402 eth_kni_probe(struct rte_vdev_device
*vdev
)
404 struct rte_eth_dev
*eth_dev
;
405 struct eth_kni_args args
;
410 name
= rte_vdev_device_name(vdev
);
411 params
= rte_vdev_device_args(vdev
);
412 PMD_LOG(INFO
, "Initializing eth_kni for %s", name
);
414 if (rte_eal_process_type() == RTE_PROC_SECONDARY
&&
415 strlen(params
) == 0) {
416 eth_dev
= rte_eth_dev_attach_secondary(name
);
418 PMD_LOG(ERR
, "Failed to probe %s", name
);
421 /* TODO: request info from primary to set up Rx and Tx */
422 eth_dev
->dev_ops
= ð_kni_ops
;
423 eth_dev
->device
= &vdev
->device
;
424 rte_eth_dev_probing_finish(eth_dev
);
428 ret
= eth_kni_kvargs_process(&args
, params
);
436 eth_dev
= eth_kni_create(vdev
, &args
, rte_socket_id());
440 eth_dev
->rx_pkt_burst
= eth_kni_rx
;
441 eth_dev
->tx_pkt_burst
= eth_kni_tx
;
443 rte_eth_dev_probing_finish(eth_dev
);
447 is_kni_initialized
--;
448 if (is_kni_initialized
== 0)
454 eth_kni_remove(struct rte_vdev_device
*vdev
)
456 struct rte_eth_dev
*eth_dev
;
457 struct pmd_internals
*internals
;
460 name
= rte_vdev_device_name(vdev
);
461 PMD_LOG(INFO
, "Un-Initializing eth_kni for %s", name
);
463 /* find the ethdev entry */
464 eth_dev
= rte_eth_dev_allocated(name
);
468 eth_kni_dev_stop(eth_dev
);
470 internals
= eth_dev
->data
->dev_private
;
471 rte_kni_release(internals
->kni
);
475 rte_eth_dev_release_port(eth_dev
);
477 is_kni_initialized
--;
478 if (is_kni_initialized
== 0)
484 static struct rte_vdev_driver eth_kni_drv
= {
485 .probe
= eth_kni_probe
,
486 .remove
= eth_kni_remove
,
489 RTE_PMD_REGISTER_VDEV(net_kni
, eth_kni_drv
);
490 RTE_PMD_REGISTER_PARAM_STRING(net_kni
, ETH_KNI_NO_REQUEST_THREAD_ARG
"=<int>");
492 RTE_INIT(eth_kni_init_log
)
494 eth_kni_logtype
= rte_log_register("pmd.net.kni");
495 if (eth_kni_logtype
>= 0)
496 rte_log_set_level(eth_kni_logtype
, RTE_LOG_NOTICE
);