Loading...
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (C) 2019-2021, Intel Corporation. */
3
4#include "ice.h"
5#include "ice_eswitch.h"
6#include "ice_devlink.h"
7#include "ice_sriov.h"
8#include "ice_tc_lib.h"
9#include "ice_dcb_lib.h"
10
11/**
12 * ice_repr_get_sw_port_id - get port ID associated with representor
13 * @repr: pointer to port representor
14 */
15static int ice_repr_get_sw_port_id(struct ice_repr *repr)
16{
17 return repr->src_vsi->back->hw.port_info->lport;
18}
19
20/**
21 * ice_repr_get_phys_port_name - get phys port name
22 * @netdev: pointer to port representor netdev
23 * @buf: write here port name
24 * @len: max length of buf
25 */
26static int
27ice_repr_get_phys_port_name(struct net_device *netdev, char *buf, size_t len)
28{
29 struct ice_netdev_priv *np = netdev_priv(netdev);
30 struct ice_repr *repr = np->repr;
31 int res;
32
33 /* Devlink port is registered and devlink core is taking care of name formatting. */
34 if (repr->vf->devlink_port.devlink)
35 return -EOPNOTSUPP;
36
37 res = snprintf(buf, len, "pf%dvfr%d", ice_repr_get_sw_port_id(repr),
38 repr->id);
39 if (res <= 0)
40 return -EOPNOTSUPP;
41 return 0;
42}
43
44/**
45 * ice_repr_get_stats64 - get VF stats for VFPR use
46 * @netdev: pointer to port representor netdev
47 * @stats: pointer to struct where stats can be stored
48 */
49static void
50ice_repr_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
51{
52 struct ice_netdev_priv *np = netdev_priv(netdev);
53 struct ice_eth_stats *eth_stats;
54 struct ice_vsi *vsi;
55
56 if (ice_is_vf_disabled(np->repr->vf))
57 return;
58 vsi = np->repr->src_vsi;
59
60 ice_update_vsi_stats(vsi);
61 eth_stats = &vsi->eth_stats;
62
63 stats->tx_packets = eth_stats->tx_unicast + eth_stats->tx_broadcast +
64 eth_stats->tx_multicast;
65 stats->rx_packets = eth_stats->rx_unicast + eth_stats->rx_broadcast +
66 eth_stats->rx_multicast;
67 stats->tx_bytes = eth_stats->tx_bytes;
68 stats->rx_bytes = eth_stats->rx_bytes;
69 stats->multicast = eth_stats->rx_multicast;
70 stats->tx_errors = eth_stats->tx_errors;
71 stats->tx_dropped = eth_stats->tx_discards;
72 stats->rx_dropped = eth_stats->rx_discards;
73}
74
75/**
76 * ice_netdev_to_repr - Get port representor for given netdevice
77 * @netdev: pointer to port representor netdev
78 */
79struct ice_repr *ice_netdev_to_repr(struct net_device *netdev)
80{
81 struct ice_netdev_priv *np = netdev_priv(netdev);
82
83 return np->repr;
84}
85
86/**
87 * ice_repr_open - Enable port representor's network interface
88 * @netdev: network interface device structure
89 *
90 * The open entry point is called when a port representor's network
91 * interface is made active by the system (IFF_UP). Corresponding
92 * VF is notified about link status change.
93 *
94 * Returns 0 on success
95 */
96static int ice_repr_open(struct net_device *netdev)
97{
98 struct ice_repr *repr = ice_netdev_to_repr(netdev);
99 struct ice_vf *vf;
100
101 vf = repr->vf;
102 vf->link_forced = true;
103 vf->link_up = true;
104 ice_vc_notify_vf_link_state(vf);
105
106 netif_carrier_on(netdev);
107 netif_tx_start_all_queues(netdev);
108
109 return 0;
110}
111
112/**
113 * ice_repr_stop - Disable port representor's network interface
114 * @netdev: network interface device structure
115 *
116 * The stop entry point is called when a port representor's network
117 * interface is de-activated by the system. Corresponding
118 * VF is notified about link status change.
119 *
120 * Returns 0 on success
121 */
122static int ice_repr_stop(struct net_device *netdev)
123{
124 struct ice_repr *repr = ice_netdev_to_repr(netdev);
125 struct ice_vf *vf;
126
127 vf = repr->vf;
128 vf->link_forced = true;
129 vf->link_up = false;
130 ice_vc_notify_vf_link_state(vf);
131
132 netif_carrier_off(netdev);
133 netif_tx_stop_all_queues(netdev);
134
135 return 0;
136}
137
138/**
139 * ice_repr_sp_stats64 - get slow path stats for port representor
140 * @dev: network interface device structure
141 * @stats: netlink stats structure
142 *
143 * RX/TX stats are being swapped here to be consistent with VF stats. In slow
144 * path, port representor receives data when the corresponding VF is sending it
145 * (and vice versa), TX and RX bytes/packets are effectively swapped on port
146 * representor.
147 */
148static int
149ice_repr_sp_stats64(const struct net_device *dev,
150 struct rtnl_link_stats64 *stats)
151{
152 struct ice_netdev_priv *np = netdev_priv(dev);
153 int vf_id = np->repr->vf->vf_id;
154 struct ice_tx_ring *tx_ring;
155 struct ice_rx_ring *rx_ring;
156 u64 pkts, bytes;
157
158 tx_ring = np->vsi->tx_rings[vf_id];
159 ice_fetch_u64_stats_per_ring(&tx_ring->ring_stats->syncp,
160 tx_ring->ring_stats->stats,
161 &pkts, &bytes);
162 stats->rx_packets = pkts;
163 stats->rx_bytes = bytes;
164
165 rx_ring = np->vsi->rx_rings[vf_id];
166 ice_fetch_u64_stats_per_ring(&rx_ring->ring_stats->syncp,
167 rx_ring->ring_stats->stats,
168 &pkts, &bytes);
169 stats->tx_packets = pkts;
170 stats->tx_bytes = bytes;
171 stats->tx_dropped = rx_ring->ring_stats->rx_stats.alloc_page_failed +
172 rx_ring->ring_stats->rx_stats.alloc_buf_failed;
173
174 return 0;
175}
176
177static bool
178ice_repr_ndo_has_offload_stats(const struct net_device *dev, int attr_id)
179{
180 return attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT;
181}
182
183static int
184ice_repr_ndo_get_offload_stats(int attr_id, const struct net_device *dev,
185 void *sp)
186{
187 if (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT)
188 return ice_repr_sp_stats64(dev, (struct rtnl_link_stats64 *)sp);
189
190 return -EINVAL;
191}
192
193static int
194ice_repr_setup_tc_cls_flower(struct ice_repr *repr,
195 struct flow_cls_offload *flower)
196{
197 switch (flower->command) {
198 case FLOW_CLS_REPLACE:
199 return ice_add_cls_flower(repr->netdev, repr->src_vsi, flower);
200 case FLOW_CLS_DESTROY:
201 return ice_del_cls_flower(repr->src_vsi, flower);
202 default:
203 return -EINVAL;
204 }
205}
206
207static int
208ice_repr_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
209 void *cb_priv)
210{
211 struct flow_cls_offload *flower = (struct flow_cls_offload *)type_data;
212 struct ice_netdev_priv *np = (struct ice_netdev_priv *)cb_priv;
213
214 switch (type) {
215 case TC_SETUP_CLSFLOWER:
216 return ice_repr_setup_tc_cls_flower(np->repr, flower);
217 default:
218 return -EOPNOTSUPP;
219 }
220}
221
222static LIST_HEAD(ice_repr_block_cb_list);
223
224static int
225ice_repr_setup_tc(struct net_device *netdev, enum tc_setup_type type,
226 void *type_data)
227{
228 struct ice_netdev_priv *np = netdev_priv(netdev);
229
230 switch (type) {
231 case TC_SETUP_BLOCK:
232 return flow_block_cb_setup_simple((struct flow_block_offload *)
233 type_data,
234 &ice_repr_block_cb_list,
235 ice_repr_setup_tc_block_cb,
236 np, np, true);
237 default:
238 return -EOPNOTSUPP;
239 }
240}
241
242static const struct net_device_ops ice_repr_netdev_ops = {
243 .ndo_get_phys_port_name = ice_repr_get_phys_port_name,
244 .ndo_get_stats64 = ice_repr_get_stats64,
245 .ndo_open = ice_repr_open,
246 .ndo_stop = ice_repr_stop,
247 .ndo_start_xmit = ice_eswitch_port_start_xmit,
248 .ndo_setup_tc = ice_repr_setup_tc,
249 .ndo_has_offload_stats = ice_repr_ndo_has_offload_stats,
250 .ndo_get_offload_stats = ice_repr_ndo_get_offload_stats,
251};
252
253/**
254 * ice_is_port_repr_netdev - Check if a given netdevice is a port representor netdev
255 * @netdev: pointer to netdev
256 */
257bool ice_is_port_repr_netdev(const struct net_device *netdev)
258{
259 return netdev && (netdev->netdev_ops == &ice_repr_netdev_ops);
260}
261
262/**
263 * ice_repr_reg_netdev - register port representor netdev
264 * @netdev: pointer to port representor netdev
265 */
266static int
267ice_repr_reg_netdev(struct net_device *netdev)
268{
269 eth_hw_addr_random(netdev);
270 netdev->netdev_ops = &ice_repr_netdev_ops;
271 ice_set_ethtool_repr_ops(netdev);
272
273 netdev->hw_features |= NETIF_F_HW_TC;
274
275 netif_carrier_off(netdev);
276 netif_tx_stop_all_queues(netdev);
277
278 return register_netdev(netdev);
279}
280
281static void ice_repr_remove_node(struct devlink_port *devlink_port)
282{
283 devl_lock(devlink_port->devlink);
284 devl_rate_leaf_destroy(devlink_port);
285 devl_unlock(devlink_port->devlink);
286}
287
288/**
289 * ice_repr_rem - remove representor from VF
290 * @repr: pointer to representor structure
291 */
292static void ice_repr_rem(struct ice_repr *repr)
293{
294 kfree(repr->q_vector);
295 free_netdev(repr->netdev);
296 kfree(repr);
297}
298
299/**
300 * ice_repr_rem_vf - remove representor from VF
301 * @repr: pointer to representor structure
302 */
303void ice_repr_rem_vf(struct ice_repr *repr)
304{
305 ice_repr_remove_node(&repr->vf->devlink_port);
306 unregister_netdev(repr->netdev);
307 ice_devlink_destroy_vf_port(repr->vf);
308 ice_virtchnl_set_dflt_ops(repr->vf);
309 ice_repr_rem(repr);
310}
311
312static void ice_repr_set_tx_topology(struct ice_pf *pf)
313{
314 struct devlink *devlink;
315
316 /* only export if ADQ and DCB disabled and eswitch enabled*/
317 if (ice_is_adq_active(pf) || ice_is_dcb_active(pf) ||
318 !ice_is_switchdev_running(pf))
319 return;
320
321 devlink = priv_to_devlink(pf);
322 ice_devlink_rate_init_tx_topology(devlink, ice_get_main_vsi(pf));
323}
324
325/**
326 * ice_repr_add - add representor for generic VSI
327 * @pf: pointer to PF structure
328 * @src_vsi: pointer to VSI structure of device to represent
329 * @parent_mac: device MAC address
330 */
331static struct ice_repr *
332ice_repr_add(struct ice_pf *pf, struct ice_vsi *src_vsi, const u8 *parent_mac)
333{
334 struct ice_q_vector *q_vector;
335 struct ice_netdev_priv *np;
336 struct ice_repr *repr;
337 int err;
338
339 repr = kzalloc(sizeof(*repr), GFP_KERNEL);
340 if (!repr)
341 return ERR_PTR(-ENOMEM);
342
343 repr->netdev = alloc_etherdev(sizeof(struct ice_netdev_priv));
344 if (!repr->netdev) {
345 err = -ENOMEM;
346 goto err_alloc;
347 }
348
349 repr->src_vsi = src_vsi;
350 np = netdev_priv(repr->netdev);
351 np->repr = repr;
352
353 q_vector = kzalloc(sizeof(*q_vector), GFP_KERNEL);
354 if (!q_vector) {
355 err = -ENOMEM;
356 goto err_alloc_q_vector;
357 }
358 repr->q_vector = q_vector;
359 repr->q_id = repr->id;
360
361 ether_addr_copy(repr->parent_mac, parent_mac);
362
363 return repr;
364
365err_alloc_q_vector:
366 free_netdev(repr->netdev);
367err_alloc:
368 kfree(repr);
369 return ERR_PTR(err);
370}
371
372struct ice_repr *ice_repr_add_vf(struct ice_vf *vf)
373{
374 struct ice_repr *repr;
375 struct ice_vsi *vsi;
376 int err;
377
378 vsi = ice_get_vf_vsi(vf);
379 if (!vsi)
380 return ERR_PTR(-ENOENT);
381
382 err = ice_devlink_create_vf_port(vf);
383 if (err)
384 return ERR_PTR(err);
385
386 repr = ice_repr_add(vf->pf, vsi, vf->hw_lan_addr);
387 if (IS_ERR(repr)) {
388 err = PTR_ERR(repr);
389 goto err_repr_add;
390 }
391
392 repr->vf = vf;
393
394 repr->netdev->min_mtu = ETH_MIN_MTU;
395 repr->netdev->max_mtu = ICE_MAX_MTU;
396
397 SET_NETDEV_DEV(repr->netdev, ice_pf_to_dev(vf->pf));
398 SET_NETDEV_DEVLINK_PORT(repr->netdev, &vf->devlink_port);
399 err = ice_repr_reg_netdev(repr->netdev);
400 if (err)
401 goto err_netdev;
402
403 ice_virtchnl_set_repr_ops(vf);
404 ice_repr_set_tx_topology(vf->pf);
405
406 return repr;
407
408err_netdev:
409 ice_repr_rem(repr);
410err_repr_add:
411 ice_devlink_destroy_vf_port(vf);
412 return ERR_PTR(err);
413}
414
415struct ice_repr *ice_repr_get_by_vsi(struct ice_vsi *vsi)
416{
417 if (!vsi->vf)
418 return NULL;
419
420 return xa_load(&vsi->back->eswitch.reprs, vsi->vf->repr_id);
421}
422
423/**
424 * ice_repr_start_tx_queues - start Tx queues of port representor
425 * @repr: pointer to repr structure
426 */
427void ice_repr_start_tx_queues(struct ice_repr *repr)
428{
429 netif_carrier_on(repr->netdev);
430 netif_tx_start_all_queues(repr->netdev);
431}
432
433/**
434 * ice_repr_stop_tx_queues - stop Tx queues of port representor
435 * @repr: pointer to repr structure
436 */
437void ice_repr_stop_tx_queues(struct ice_repr *repr)
438{
439 netif_carrier_off(repr->netdev);
440 netif_tx_stop_all_queues(repr->netdev);
441}
442
443/**
444 * ice_repr_set_traffic_vsi - set traffic VSI for port representor
445 * @repr: repr on with VSI will be set
446 * @vsi: pointer to VSI that will be used by port representor to pass traffic
447 */
448void ice_repr_set_traffic_vsi(struct ice_repr *repr, struct ice_vsi *vsi)
449{
450 struct ice_netdev_priv *np = netdev_priv(repr->netdev);
451
452 np->vsi = vsi;
453}
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (C) 2019-2021, Intel Corporation. */
3
4#include "ice.h"
5#include "ice_eswitch.h"
6#include "ice_devlink.h"
7#include "ice_sriov.h"
8#include "ice_tc_lib.h"
9#include "ice_dcb_lib.h"
10
11/**
12 * ice_repr_get_sw_port_id - get port ID associated with representor
13 * @repr: pointer to port representor
14 */
15static int ice_repr_get_sw_port_id(struct ice_repr *repr)
16{
17 return repr->vf->pf->hw.port_info->lport;
18}
19
20/**
21 * ice_repr_get_phys_port_name - get phys port name
22 * @netdev: pointer to port representor netdev
23 * @buf: write here port name
24 * @len: max length of buf
25 */
26static int
27ice_repr_get_phys_port_name(struct net_device *netdev, char *buf, size_t len)
28{
29 struct ice_netdev_priv *np = netdev_priv(netdev);
30 struct ice_repr *repr = np->repr;
31 int res;
32
33 /* Devlink port is registered and devlink core is taking care of name formatting. */
34 if (repr->vf->devlink_port.devlink)
35 return -EOPNOTSUPP;
36
37 res = snprintf(buf, len, "pf%dvfr%d", ice_repr_get_sw_port_id(repr),
38 repr->vf->vf_id);
39 if (res <= 0)
40 return -EOPNOTSUPP;
41 return 0;
42}
43
44/**
45 * ice_repr_get_stats64 - get VF stats for VFPR use
46 * @netdev: pointer to port representor netdev
47 * @stats: pointer to struct where stats can be stored
48 */
49static void
50ice_repr_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
51{
52 struct ice_netdev_priv *np = netdev_priv(netdev);
53 struct ice_eth_stats *eth_stats;
54 struct ice_vsi *vsi;
55
56 if (ice_is_vf_disabled(np->repr->vf))
57 return;
58 vsi = np->repr->src_vsi;
59
60 ice_update_vsi_stats(vsi);
61 eth_stats = &vsi->eth_stats;
62
63 stats->tx_packets = eth_stats->tx_unicast + eth_stats->tx_broadcast +
64 eth_stats->tx_multicast;
65 stats->rx_packets = eth_stats->rx_unicast + eth_stats->rx_broadcast +
66 eth_stats->rx_multicast;
67 stats->tx_bytes = eth_stats->tx_bytes;
68 stats->rx_bytes = eth_stats->rx_bytes;
69 stats->multicast = eth_stats->rx_multicast;
70 stats->tx_errors = eth_stats->tx_errors;
71 stats->tx_dropped = eth_stats->tx_discards;
72 stats->rx_dropped = eth_stats->rx_discards;
73}
74
75/**
76 * ice_netdev_to_repr - Get port representor for given netdevice
77 * @netdev: pointer to port representor netdev
78 */
79struct ice_repr *ice_netdev_to_repr(struct net_device *netdev)
80{
81 struct ice_netdev_priv *np = netdev_priv(netdev);
82
83 return np->repr;
84}
85
86/**
87 * ice_repr_open - Enable port representor's network interface
88 * @netdev: network interface device structure
89 *
90 * The open entry point is called when a port representor's network
91 * interface is made active by the system (IFF_UP). Corresponding
92 * VF is notified about link status change.
93 *
94 * Returns 0 on success
95 */
96static int ice_repr_open(struct net_device *netdev)
97{
98 struct ice_repr *repr = ice_netdev_to_repr(netdev);
99 struct ice_vf *vf;
100
101 vf = repr->vf;
102 vf->link_forced = true;
103 vf->link_up = true;
104 ice_vc_notify_vf_link_state(vf);
105
106 netif_carrier_on(netdev);
107 netif_tx_start_all_queues(netdev);
108
109 return 0;
110}
111
112/**
113 * ice_repr_stop - Disable port representor's network interface
114 * @netdev: network interface device structure
115 *
116 * The stop entry point is called when a port representor's network
117 * interface is de-activated by the system. Corresponding
118 * VF is notified about link status change.
119 *
120 * Returns 0 on success
121 */
122static int ice_repr_stop(struct net_device *netdev)
123{
124 struct ice_repr *repr = ice_netdev_to_repr(netdev);
125 struct ice_vf *vf;
126
127 vf = repr->vf;
128 vf->link_forced = true;
129 vf->link_up = false;
130 ice_vc_notify_vf_link_state(vf);
131
132 netif_carrier_off(netdev);
133 netif_tx_stop_all_queues(netdev);
134
135 return 0;
136}
137
138/**
139 * ice_repr_sp_stats64 - get slow path stats for port representor
140 * @dev: network interface device structure
141 * @stats: netlink stats structure
142 *
143 * RX/TX stats are being swapped here to be consistent with VF stats. In slow
144 * path, port representor receives data when the corresponding VF is sending it
145 * (and vice versa), TX and RX bytes/packets are effectively swapped on port
146 * representor.
147 */
148static int
149ice_repr_sp_stats64(const struct net_device *dev,
150 struct rtnl_link_stats64 *stats)
151{
152 struct ice_netdev_priv *np = netdev_priv(dev);
153 int vf_id = np->repr->vf->vf_id;
154 struct ice_tx_ring *tx_ring;
155 struct ice_rx_ring *rx_ring;
156 u64 pkts, bytes;
157
158 tx_ring = np->vsi->tx_rings[vf_id];
159 ice_fetch_u64_stats_per_ring(&tx_ring->ring_stats->syncp,
160 tx_ring->ring_stats->stats,
161 &pkts, &bytes);
162 stats->rx_packets = pkts;
163 stats->rx_bytes = bytes;
164
165 rx_ring = np->vsi->rx_rings[vf_id];
166 ice_fetch_u64_stats_per_ring(&rx_ring->ring_stats->syncp,
167 rx_ring->ring_stats->stats,
168 &pkts, &bytes);
169 stats->tx_packets = pkts;
170 stats->tx_bytes = bytes;
171 stats->tx_dropped = rx_ring->ring_stats->rx_stats.alloc_page_failed +
172 rx_ring->ring_stats->rx_stats.alloc_buf_failed;
173
174 return 0;
175}
176
177static bool
178ice_repr_ndo_has_offload_stats(const struct net_device *dev, int attr_id)
179{
180 return attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT;
181}
182
183static int
184ice_repr_ndo_get_offload_stats(int attr_id, const struct net_device *dev,
185 void *sp)
186{
187 if (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT)
188 return ice_repr_sp_stats64(dev, (struct rtnl_link_stats64 *)sp);
189
190 return -EINVAL;
191}
192
193static int
194ice_repr_setup_tc_cls_flower(struct ice_repr *repr,
195 struct flow_cls_offload *flower)
196{
197 switch (flower->command) {
198 case FLOW_CLS_REPLACE:
199 return ice_add_cls_flower(repr->netdev, repr->src_vsi, flower);
200 case FLOW_CLS_DESTROY:
201 return ice_del_cls_flower(repr->src_vsi, flower);
202 default:
203 return -EINVAL;
204 }
205}
206
207static int
208ice_repr_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
209 void *cb_priv)
210{
211 struct flow_cls_offload *flower = (struct flow_cls_offload *)type_data;
212 struct ice_netdev_priv *np = (struct ice_netdev_priv *)cb_priv;
213
214 switch (type) {
215 case TC_SETUP_CLSFLOWER:
216 return ice_repr_setup_tc_cls_flower(np->repr, flower);
217 default:
218 return -EOPNOTSUPP;
219 }
220}
221
222static LIST_HEAD(ice_repr_block_cb_list);
223
224static int
225ice_repr_setup_tc(struct net_device *netdev, enum tc_setup_type type,
226 void *type_data)
227{
228 struct ice_netdev_priv *np = netdev_priv(netdev);
229
230 switch (type) {
231 case TC_SETUP_BLOCK:
232 return flow_block_cb_setup_simple((struct flow_block_offload *)
233 type_data,
234 &ice_repr_block_cb_list,
235 ice_repr_setup_tc_block_cb,
236 np, np, true);
237 default:
238 return -EOPNOTSUPP;
239 }
240}
241
242static const struct net_device_ops ice_repr_netdev_ops = {
243 .ndo_get_phys_port_name = ice_repr_get_phys_port_name,
244 .ndo_get_stats64 = ice_repr_get_stats64,
245 .ndo_open = ice_repr_open,
246 .ndo_stop = ice_repr_stop,
247 .ndo_start_xmit = ice_eswitch_port_start_xmit,
248 .ndo_setup_tc = ice_repr_setup_tc,
249 .ndo_has_offload_stats = ice_repr_ndo_has_offload_stats,
250 .ndo_get_offload_stats = ice_repr_ndo_get_offload_stats,
251};
252
253/**
254 * ice_is_port_repr_netdev - Check if a given netdevice is a port representor netdev
255 * @netdev: pointer to netdev
256 */
257bool ice_is_port_repr_netdev(struct net_device *netdev)
258{
259 return netdev && (netdev->netdev_ops == &ice_repr_netdev_ops);
260}
261
262/**
263 * ice_repr_reg_netdev - register port representor netdev
264 * @netdev: pointer to port representor netdev
265 */
266static int
267ice_repr_reg_netdev(struct net_device *netdev)
268{
269 eth_hw_addr_random(netdev);
270 netdev->netdev_ops = &ice_repr_netdev_ops;
271 ice_set_ethtool_repr_ops(netdev);
272
273 netdev->hw_features |= NETIF_F_HW_TC;
274
275 netif_carrier_off(netdev);
276 netif_tx_stop_all_queues(netdev);
277
278 return register_netdev(netdev);
279}
280
281/**
282 * ice_repr_add - add representor for VF
283 * @vf: pointer to VF structure
284 */
285static int ice_repr_add(struct ice_vf *vf)
286{
287 struct ice_q_vector *q_vector;
288 struct ice_netdev_priv *np;
289 struct ice_repr *repr;
290 struct ice_vsi *vsi;
291 int err;
292
293 vsi = ice_get_vf_vsi(vf);
294 if (!vsi)
295 return -EINVAL;
296
297 repr = kzalloc(sizeof(*repr), GFP_KERNEL);
298 if (!repr)
299 return -ENOMEM;
300
301#ifdef CONFIG_ICE_SWITCHDEV
302 repr->mac_rule = kzalloc(sizeof(*repr->mac_rule), GFP_KERNEL);
303 if (!repr->mac_rule) {
304 err = -ENOMEM;
305 goto err_alloc_rule;
306 }
307#endif
308
309 repr->netdev = alloc_etherdev(sizeof(struct ice_netdev_priv));
310 if (!repr->netdev) {
311 err = -ENOMEM;
312 goto err_alloc;
313 }
314
315 repr->src_vsi = vsi;
316 repr->vf = vf;
317 vf->repr = repr;
318 np = netdev_priv(repr->netdev);
319 np->repr = repr;
320
321 q_vector = kzalloc(sizeof(*q_vector), GFP_KERNEL);
322 if (!q_vector) {
323 err = -ENOMEM;
324 goto err_alloc_q_vector;
325 }
326 repr->q_vector = q_vector;
327
328 err = ice_devlink_create_vf_port(vf);
329 if (err)
330 goto err_devlink;
331
332 repr->netdev->min_mtu = ETH_MIN_MTU;
333 repr->netdev->max_mtu = ICE_MAX_MTU;
334
335 SET_NETDEV_DEV(repr->netdev, ice_pf_to_dev(vf->pf));
336 SET_NETDEV_DEVLINK_PORT(repr->netdev, &vf->devlink_port);
337 err = ice_repr_reg_netdev(repr->netdev);
338 if (err)
339 goto err_netdev;
340
341 ice_virtchnl_set_repr_ops(vf);
342
343 return 0;
344
345err_netdev:
346 ice_devlink_destroy_vf_port(vf);
347err_devlink:
348 kfree(repr->q_vector);
349 vf->repr->q_vector = NULL;
350err_alloc_q_vector:
351 free_netdev(repr->netdev);
352 repr->netdev = NULL;
353err_alloc:
354#ifdef CONFIG_ICE_SWITCHDEV
355 kfree(repr->mac_rule);
356 repr->mac_rule = NULL;
357err_alloc_rule:
358#endif
359 kfree(repr);
360 vf->repr = NULL;
361 return err;
362}
363
364/**
365 * ice_repr_rem - remove representor from VF
366 * @vf: pointer to VF structure
367 */
368static void ice_repr_rem(struct ice_vf *vf)
369{
370 if (!vf->repr)
371 return;
372
373 kfree(vf->repr->q_vector);
374 vf->repr->q_vector = NULL;
375 unregister_netdev(vf->repr->netdev);
376 ice_devlink_destroy_vf_port(vf);
377 free_netdev(vf->repr->netdev);
378 vf->repr->netdev = NULL;
379#ifdef CONFIG_ICE_SWITCHDEV
380 kfree(vf->repr->mac_rule);
381 vf->repr->mac_rule = NULL;
382#endif
383 kfree(vf->repr);
384 vf->repr = NULL;
385
386 ice_virtchnl_set_dflt_ops(vf);
387}
388
389/**
390 * ice_repr_rem_from_all_vfs - remove port representor for all VFs
391 * @pf: pointer to PF structure
392 */
393void ice_repr_rem_from_all_vfs(struct ice_pf *pf)
394{
395 struct devlink *devlink;
396 struct ice_vf *vf;
397 unsigned int bkt;
398
399 lockdep_assert_held(&pf->vfs.table_lock);
400
401 ice_for_each_vf(pf, bkt, vf)
402 ice_repr_rem(vf);
403
404 /* since all port representors are destroyed, there is
405 * no point in keeping the nodes
406 */
407 devlink = priv_to_devlink(pf);
408 devl_lock(devlink);
409 devl_rate_nodes_destroy(devlink);
410 devl_unlock(devlink);
411}
412
413/**
414 * ice_repr_add_for_all_vfs - add port representor for all VFs
415 * @pf: pointer to PF structure
416 */
417int ice_repr_add_for_all_vfs(struct ice_pf *pf)
418{
419 struct devlink *devlink;
420 struct ice_vf *vf;
421 unsigned int bkt;
422 int err;
423
424 lockdep_assert_held(&pf->vfs.table_lock);
425
426 ice_for_each_vf(pf, bkt, vf) {
427 err = ice_repr_add(vf);
428 if (err)
429 goto err;
430 }
431
432 /* only export if ADQ and DCB disabled */
433 if (ice_is_adq_active(pf) || ice_is_dcb_active(pf))
434 return 0;
435
436 devlink = priv_to_devlink(pf);
437 ice_devlink_rate_init_tx_topology(devlink, ice_get_main_vsi(pf));
438
439 return 0;
440
441err:
442 ice_repr_rem_from_all_vfs(pf);
443
444 return err;
445}
446
447/**
448 * ice_repr_start_tx_queues - start Tx queues of port representor
449 * @repr: pointer to repr structure
450 */
451void ice_repr_start_tx_queues(struct ice_repr *repr)
452{
453 netif_carrier_on(repr->netdev);
454 netif_tx_start_all_queues(repr->netdev);
455}
456
457/**
458 * ice_repr_stop_tx_queues - stop Tx queues of port representor
459 * @repr: pointer to repr structure
460 */
461void ice_repr_stop_tx_queues(struct ice_repr *repr)
462{
463 netif_carrier_off(repr->netdev);
464 netif_tx_stop_all_queues(repr->netdev);
465}
466
467/**
468 * ice_repr_set_traffic_vsi - set traffic VSI for port representor
469 * @repr: repr on with VSI will be set
470 * @vsi: pointer to VSI that will be used by port representor to pass traffic
471 */
472void ice_repr_set_traffic_vsi(struct ice_repr *repr, struct ice_vsi *vsi)
473{
474 struct ice_netdev_priv *np = netdev_priv(repr->netdev);
475
476 np->vsi = vsi;
477}