1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2 /* Copyright (c) 2019-2020 Marvell International Ltd. All rights reserved */
4 #include <linux/etherdevice.h>
5 #include <linux/jiffies.h>
6 #include <linux/list.h>
7 #include <linux/module.h>
8 #include <linux/netdev_features.h>
10 #include <linux/of_net.h>
11 #include <linux/if_vlan.h>
14 #include "prestera_hw.h"
15 #include "prestera_acl.h"
16 #include "prestera_flow.h"
17 #include "prestera_span.h"
18 #include "prestera_rxtx.h"
19 #include "prestera_devlink.h"
20 #include "prestera_ethtool.h"
21 #include "prestera_switchdev.h"
23 #define PRESTERA_MTU_DEFAULT 1536
25 #define PRESTERA_STATS_DELAY_MS 1000
27 #define PRESTERA_MAC_ADDR_NUM_MAX 255
29 static struct workqueue_struct *prestera_wq;
31 int prestera_port_pvid_set(struct prestera_port *port, u16 vid)
33 enum prestera_accept_frm_type frm_type;
36 frm_type = PRESTERA_ACCEPT_FRAME_TYPE_TAGGED;
39 err = prestera_hw_vlan_port_vid_set(port, vid);
43 frm_type = PRESTERA_ACCEPT_FRAME_TYPE_ALL;
46 err = prestera_hw_port_accept_frm_type(port, frm_type);
47 if (err && frm_type == PRESTERA_ACCEPT_FRAME_TYPE_ALL)
48 prestera_hw_vlan_port_vid_set(port, port->pvid);
54 struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw,
55 u32 dev_id, u32 hw_id)
57 struct prestera_port *port = NULL, *tmp;
59 read_lock(&sw->port_list_lock);
60 list_for_each_entry(tmp, &sw->port_list, list) {
61 if (tmp->dev_id == dev_id && tmp->hw_id == hw_id) {
66 read_unlock(&sw->port_list_lock);
71 struct prestera_port *prestera_find_port(struct prestera_switch *sw, u32 id)
73 struct prestera_port *port = NULL, *tmp;
75 read_lock(&sw->port_list_lock);
76 list_for_each_entry(tmp, &sw->port_list, list) {
82 read_unlock(&sw->port_list_lock);
87 int prestera_port_cfg_mac_read(struct prestera_port *port,
88 struct prestera_port_mac_config *cfg)
94 int prestera_port_cfg_mac_write(struct prestera_port *port,
95 struct prestera_port_mac_config *cfg)
99 err = prestera_hw_port_mac_mode_set(port, cfg->admin,
100 cfg->mode, cfg->inband, cfg->speed,
101 cfg->duplex, cfg->fec);
105 port->cfg_mac = *cfg;
109 static int prestera_port_open(struct net_device *dev)
111 struct prestera_port *port = netdev_priv(dev);
112 struct prestera_port_mac_config cfg_mac;
115 if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) {
116 err = prestera_port_cfg_mac_read(port, &cfg_mac);
118 cfg_mac.admin = true;
119 err = prestera_port_cfg_mac_write(port, &cfg_mac);
122 port->cfg_phy.admin = true;
123 err = prestera_hw_port_phy_mode_set(port, true, port->autoneg,
125 port->adver_link_modes,
129 netif_start_queue(dev);
134 static int prestera_port_close(struct net_device *dev)
136 struct prestera_port *port = netdev_priv(dev);
137 struct prestera_port_mac_config cfg_mac;
140 netif_stop_queue(dev);
142 if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) {
143 err = prestera_port_cfg_mac_read(port, &cfg_mac);
145 cfg_mac.admin = false;
146 prestera_port_cfg_mac_write(port, &cfg_mac);
149 port->cfg_phy.admin = false;
150 err = prestera_hw_port_phy_mode_set(port, false, port->autoneg,
152 port->adver_link_modes,
159 static netdev_tx_t prestera_port_xmit(struct sk_buff *skb,
160 struct net_device *dev)
162 return prestera_rxtx_xmit(netdev_priv(dev), skb);
165 static int prestera_is_valid_mac_addr(struct prestera_port *port, u8 *addr)
167 if (!is_valid_ether_addr(addr))
168 return -EADDRNOTAVAIL;
170 /* firmware requires that port's MAC address contains first 5 bytes
171 * of the base MAC address
173 if (memcmp(port->sw->base_mac, addr, ETH_ALEN - 1))
179 static int prestera_port_set_mac_address(struct net_device *dev, void *p)
181 struct prestera_port *port = netdev_priv(dev);
182 struct sockaddr *addr = p;
185 err = prestera_is_valid_mac_addr(port, addr->sa_data);
189 err = prestera_hw_port_mac_set(port, addr->sa_data);
193 eth_hw_addr_set(dev, addr->sa_data);
198 static int prestera_port_change_mtu(struct net_device *dev, int mtu)
200 struct prestera_port *port = netdev_priv(dev);
203 err = prestera_hw_port_mtu_set(port, mtu);
212 static void prestera_port_get_stats64(struct net_device *dev,
213 struct rtnl_link_stats64 *stats)
215 struct prestera_port *port = netdev_priv(dev);
216 struct prestera_port_stats *port_stats = &port->cached_hw_stats.stats;
218 stats->rx_packets = port_stats->broadcast_frames_received +
219 port_stats->multicast_frames_received +
220 port_stats->unicast_frames_received;
222 stats->tx_packets = port_stats->broadcast_frames_sent +
223 port_stats->multicast_frames_sent +
224 port_stats->unicast_frames_sent;
226 stats->rx_bytes = port_stats->good_octets_received;
228 stats->tx_bytes = port_stats->good_octets_sent;
230 stats->rx_errors = port_stats->rx_error_frame_received;
231 stats->tx_errors = port_stats->mac_trans_error;
233 stats->rx_dropped = port_stats->buffer_overrun;
234 stats->tx_dropped = 0;
236 stats->multicast = port_stats->multicast_frames_received;
237 stats->collisions = port_stats->excessive_collision;
239 stats->rx_crc_errors = port_stats->bad_crc;
242 static void prestera_port_get_hw_stats(struct prestera_port *port)
244 prestera_hw_port_stats_get(port, &port->cached_hw_stats.stats);
247 static void prestera_port_stats_update(struct work_struct *work)
249 struct prestera_port *port =
250 container_of(work, struct prestera_port,
251 cached_hw_stats.caching_dw.work);
253 prestera_port_get_hw_stats(port);
255 queue_delayed_work(prestera_wq, &port->cached_hw_stats.caching_dw,
256 msecs_to_jiffies(PRESTERA_STATS_DELAY_MS));
259 static int prestera_port_setup_tc(struct net_device *dev,
260 enum tc_setup_type type,
263 struct prestera_port *port = netdev_priv(dev);
267 return prestera_flow_block_setup(port, type_data);
273 static const struct net_device_ops prestera_netdev_ops = {
274 .ndo_open = prestera_port_open,
275 .ndo_stop = prestera_port_close,
276 .ndo_start_xmit = prestera_port_xmit,
277 .ndo_setup_tc = prestera_port_setup_tc,
278 .ndo_change_mtu = prestera_port_change_mtu,
279 .ndo_get_stats64 = prestera_port_get_stats64,
280 .ndo_set_mac_address = prestera_port_set_mac_address,
281 .ndo_get_devlink_port = prestera_devlink_get_port,
284 int prestera_port_autoneg_set(struct prestera_port *port, u64 link_modes)
288 if (port->autoneg && port->adver_link_modes == link_modes)
291 err = prestera_hw_port_phy_mode_set(port, port->cfg_phy.admin,
297 port->adver_fec = BIT(PRESTERA_PORT_FEC_OFF);
298 port->adver_link_modes = link_modes;
299 port->cfg_phy.mode = 0;
300 port->autoneg = true;
305 static void prestera_port_list_add(struct prestera_port *port)
307 write_lock(&port->sw->port_list_lock);
308 list_add(&port->list, &port->sw->port_list);
309 write_unlock(&port->sw->port_list_lock);
312 static void prestera_port_list_del(struct prestera_port *port)
314 write_lock(&port->sw->port_list_lock);
315 list_del(&port->list);
316 write_unlock(&port->sw->port_list_lock);
319 static int prestera_port_create(struct prestera_switch *sw, u32 id)
321 struct prestera_port_mac_config cfg_mac;
322 struct prestera_port *port;
323 struct net_device *dev;
326 dev = alloc_etherdev(sizeof(*port));
330 port = netdev_priv(dev);
332 INIT_LIST_HEAD(&port->vlans_list);
333 port->pvid = PRESTERA_DEFAULT_VID;
339 err = prestera_hw_port_info_get(port, &port->dev_id, &port->hw_id,
342 dev_err(prestera_dev(sw), "Failed to get port(%u) info\n", id);
343 goto err_port_info_get;
346 err = prestera_devlink_port_register(port);
348 goto err_dl_port_register;
350 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_HW_TC;
351 dev->netdev_ops = &prestera_netdev_ops;
352 dev->ethtool_ops = &prestera_ethtool_ops;
354 netif_carrier_off(dev);
356 dev->mtu = min_t(unsigned int, sw->mtu_max, PRESTERA_MTU_DEFAULT);
357 dev->min_mtu = sw->mtu_min;
358 dev->max_mtu = sw->mtu_max;
360 err = prestera_hw_port_mtu_set(port, dev->mtu);
362 dev_err(prestera_dev(sw), "Failed to set port(%u) mtu(%d)\n",
367 if (port->fp_id >= PRESTERA_MAC_ADDR_NUM_MAX) {
372 eth_hw_addr_gen(dev, sw->base_mac, port->fp_id);
373 /* firmware requires that port's MAC address consist of the first
374 * 5 bytes of the base MAC address
376 if (memcmp(dev->dev_addr, sw->base_mac, ETH_ALEN - 1)) {
377 dev_warn(prestera_dev(sw), "Port MAC address wraps for port(%u)\n", id);
378 dev_addr_mod(dev, 0, sw->base_mac, ETH_ALEN - 1);
381 err = prestera_hw_port_mac_set(port, dev->dev_addr);
383 dev_err(prestera_dev(sw), "Failed to set port(%u) mac addr\n", id);
387 err = prestera_hw_port_cap_get(port, &port->caps);
389 dev_err(prestera_dev(sw), "Failed to get port(%u) caps\n", id);
393 port->adver_link_modes = port->caps.supp_link_modes;
395 port->autoneg = true;
397 /* initialize config mac */
398 if (port->caps.transceiver != PRESTERA_PORT_TCVR_SFP) {
399 cfg_mac.admin = true;
400 cfg_mac.mode = PRESTERA_MAC_MODE_INTERNAL;
402 cfg_mac.admin = false;
403 cfg_mac.mode = PRESTERA_MAC_MODE_MAX;
405 cfg_mac.inband = false;
407 cfg_mac.duplex = DUPLEX_UNKNOWN;
408 cfg_mac.fec = PRESTERA_PORT_FEC_OFF;
410 err = prestera_port_cfg_mac_write(port, &cfg_mac);
412 dev_err(prestera_dev(sw),
413 "Failed to set port(%u) mac mode\n", id);
417 /* initialize config phy (if this is inegral) */
418 if (port->caps.transceiver != PRESTERA_PORT_TCVR_SFP) {
419 port->cfg_phy.mdix = ETH_TP_MDI_AUTO;
420 port->cfg_phy.admin = false;
421 err = prestera_hw_port_phy_mode_set(port,
426 dev_err(prestera_dev(sw),
427 "Failed to set port(%u) phy mode\n", id);
432 err = prestera_rxtx_port_init(port);
436 INIT_DELAYED_WORK(&port->cached_hw_stats.caching_dw,
437 &prestera_port_stats_update);
439 prestera_port_list_add(port);
441 err = register_netdev(dev);
443 goto err_register_netdev;
445 prestera_devlink_port_set(port);
450 prestera_port_list_del(port);
452 prestera_devlink_port_unregister(port);
453 err_dl_port_register:
459 static void prestera_port_destroy(struct prestera_port *port)
461 struct net_device *dev = port->dev;
463 cancel_delayed_work_sync(&port->cached_hw_stats.caching_dw);
464 prestera_devlink_port_clear(port);
465 unregister_netdev(dev);
466 prestera_port_list_del(port);
467 prestera_devlink_port_unregister(port);
471 static void prestera_destroy_ports(struct prestera_switch *sw)
473 struct prestera_port *port, *tmp;
475 list_for_each_entry_safe(port, tmp, &sw->port_list, list)
476 prestera_port_destroy(port);
479 static int prestera_create_ports(struct prestera_switch *sw)
481 struct prestera_port *port, *tmp;
485 for (port_idx = 0; port_idx < sw->port_count; port_idx++) {
486 err = prestera_port_create(sw, port_idx);
488 goto err_port_create;
494 list_for_each_entry_safe(port, tmp, &sw->port_list, list)
495 prestera_port_destroy(port);
500 static void prestera_port_handle_event(struct prestera_switch *sw,
501 struct prestera_event *evt, void *arg)
503 struct delayed_work *caching_dw;
504 struct prestera_port *port;
506 port = prestera_find_port(sw, evt->port_evt.port_id);
507 if (!port || !port->dev)
510 caching_dw = &port->cached_hw_stats.caching_dw;
512 prestera_ethtool_port_state_changed(port, &evt->port_evt);
514 if (evt->id == PRESTERA_PORT_EVENT_MAC_STATE_CHANGED) {
515 if (port->state_mac.oper) {
516 netif_carrier_on(port->dev);
517 if (!delayed_work_pending(caching_dw))
518 queue_delayed_work(prestera_wq, caching_dw, 0);
519 } else if (netif_running(port->dev) &&
520 netif_carrier_ok(port->dev)) {
521 netif_carrier_off(port->dev);
522 if (delayed_work_pending(caching_dw))
523 cancel_delayed_work(caching_dw);
528 static int prestera_event_handlers_register(struct prestera_switch *sw)
530 return prestera_hw_event_handler_register(sw, PRESTERA_EVENT_TYPE_PORT,
531 prestera_port_handle_event,
535 static void prestera_event_handlers_unregister(struct prestera_switch *sw)
537 prestera_hw_event_handler_unregister(sw, PRESTERA_EVENT_TYPE_PORT,
538 prestera_port_handle_event);
541 static int prestera_switch_set_base_mac_addr(struct prestera_switch *sw)
543 struct device_node *base_mac_np;
544 struct device_node *np;
547 np = of_find_compatible_node(NULL, NULL, "marvell,prestera");
548 base_mac_np = of_parse_phandle(np, "base-mac-provider", 0);
550 ret = of_get_mac_address(base_mac_np, sw->base_mac);
552 eth_random_addr(sw->base_mac);
553 dev_info(prestera_dev(sw), "using random base mac address\n");
555 of_node_put(base_mac_np);
557 return prestera_hw_switch_mac_set(sw, sw->base_mac);
560 struct prestera_lag *prestera_lag_by_id(struct prestera_switch *sw, u16 id)
562 return id < sw->lag_max ? &sw->lags[id] : NULL;
565 static struct prestera_lag *prestera_lag_by_dev(struct prestera_switch *sw,
566 struct net_device *dev)
568 struct prestera_lag *lag;
571 for (id = 0; id < sw->lag_max; id++) {
580 static struct prestera_lag *prestera_lag_create(struct prestera_switch *sw,
581 struct net_device *lag_dev)
583 struct prestera_lag *lag = NULL;
586 for (id = 0; id < sw->lag_max; id++) {
592 INIT_LIST_HEAD(&lag->members);
599 static void prestera_lag_destroy(struct prestera_switch *sw,
600 struct prestera_lag *lag)
602 WARN_ON(!list_empty(&lag->members));
603 lag->member_count = 0;
607 static int prestera_lag_port_add(struct prestera_port *port,
608 struct net_device *lag_dev)
610 struct prestera_switch *sw = port->sw;
611 struct prestera_lag *lag;
614 lag = prestera_lag_by_dev(sw, lag_dev);
616 lag = prestera_lag_create(sw, lag_dev);
621 if (lag->member_count >= sw->lag_member_max)
624 err = prestera_hw_lag_member_add(port, lag->lag_id);
626 if (!lag->member_count)
627 prestera_lag_destroy(sw, lag);
631 list_add(&port->lag_member, &lag->members);
638 static int prestera_lag_port_del(struct prestera_port *port)
640 struct prestera_switch *sw = port->sw;
641 struct prestera_lag *lag = port->lag;
644 if (!lag || !lag->member_count)
647 err = prestera_hw_lag_member_del(port, lag->lag_id);
651 list_del(&port->lag_member);
655 if (netif_is_bridge_port(lag->dev)) {
656 struct net_device *br_dev;
658 br_dev = netdev_master_upper_dev_get(lag->dev);
660 prestera_bridge_port_leave(br_dev, port);
663 if (!lag->member_count)
664 prestera_lag_destroy(sw, lag);
669 bool prestera_port_is_lag_member(const struct prestera_port *port)
674 u16 prestera_port_lag_id(const struct prestera_port *port)
676 return port->lag->lag_id;
679 static int prestera_lag_init(struct prestera_switch *sw)
683 sw->lags = kcalloc(sw->lag_max, sizeof(*sw->lags), GFP_KERNEL);
687 for (id = 0; id < sw->lag_max; id++)
688 sw->lags[id].lag_id = id;
693 static void prestera_lag_fini(struct prestera_switch *sw)
697 for (idx = 0; idx < sw->lag_max; idx++)
698 WARN_ON(sw->lags[idx].member_count);
703 bool prestera_netdev_check(const struct net_device *dev)
705 return dev->netdev_ops == &prestera_netdev_ops;
708 static int prestera_lower_dev_walk(struct net_device *dev,
709 struct netdev_nested_priv *priv)
711 struct prestera_port **pport = (struct prestera_port **)priv->data;
713 if (prestera_netdev_check(dev)) {
714 *pport = netdev_priv(dev);
721 struct prestera_port *prestera_port_dev_lower_find(struct net_device *dev)
723 struct prestera_port *port = NULL;
724 struct netdev_nested_priv priv = {
725 .data = (void *)&port,
728 if (prestera_netdev_check(dev))
729 return netdev_priv(dev);
731 netdev_walk_all_lower_dev(dev, prestera_lower_dev_walk, &priv);
736 static int prestera_netdev_port_lower_event(struct net_device *dev,
737 unsigned long event, void *ptr)
739 struct netdev_notifier_changelowerstate_info *info = ptr;
740 struct netdev_lag_lower_state_info *lower_state_info;
741 struct prestera_port *port = netdev_priv(dev);
744 if (!netif_is_lag_port(dev))
746 if (!prestera_port_is_lag_member(port))
749 lower_state_info = info->lower_state_info;
750 enabled = lower_state_info->link_up && lower_state_info->tx_enabled;
752 return prestera_hw_lag_member_enable(port, port->lag->lag_id, enabled);
755 static bool prestera_lag_master_check(struct net_device *lag_dev,
756 struct netdev_lag_upper_info *info,
757 struct netlink_ext_ack *ext_ack)
759 if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
760 NL_SET_ERR_MSG_MOD(ext_ack, "Unsupported LAG Tx type");
767 static int prestera_netdev_port_event(struct net_device *lower,
768 struct net_device *dev,
769 unsigned long event, void *ptr)
771 struct netdev_notifier_info *info = ptr;
772 struct netdev_notifier_changeupper_info *cu_info;
773 struct prestera_port *port = netdev_priv(dev);
774 struct netlink_ext_ack *extack;
775 struct net_device *upper;
777 extack = netdev_notifier_info_to_extack(info);
778 cu_info = container_of(info,
779 struct netdev_notifier_changeupper_info,
783 case NETDEV_PRECHANGEUPPER:
784 upper = cu_info->upper_dev;
785 if (!netif_is_bridge_master(upper) &&
786 !netif_is_lag_master(upper)) {
787 NL_SET_ERR_MSG_MOD(extack, "Unknown upper device type");
791 if (!cu_info->linking)
794 if (netdev_has_any_upper_dev(upper)) {
795 NL_SET_ERR_MSG_MOD(extack, "Upper device is already enslaved");
799 if (netif_is_lag_master(upper) &&
800 !prestera_lag_master_check(upper, cu_info->upper_info, extack))
802 if (netif_is_lag_master(upper) && vlan_uses_dev(dev)) {
803 NL_SET_ERR_MSG_MOD(extack,
804 "Master device is a LAG master and port has a VLAN");
807 if (netif_is_lag_port(dev) && is_vlan_dev(upper) &&
808 !netif_is_lag_master(vlan_dev_real_dev(upper))) {
809 NL_SET_ERR_MSG_MOD(extack,
810 "Can not put a VLAN on a LAG port");
815 case NETDEV_CHANGEUPPER:
816 upper = cu_info->upper_dev;
817 if (netif_is_bridge_master(upper)) {
818 if (cu_info->linking)
819 return prestera_bridge_port_join(upper, port,
822 prestera_bridge_port_leave(upper, port);
823 } else if (netif_is_lag_master(upper)) {
824 if (cu_info->linking)
825 return prestera_lag_port_add(port, upper);
827 prestera_lag_port_del(port);
831 case NETDEV_CHANGELOWERSTATE:
832 return prestera_netdev_port_lower_event(dev, event, ptr);
838 static int prestera_netdevice_lag_event(struct net_device *lag_dev,
839 unsigned long event, void *ptr)
841 struct net_device *dev;
842 struct list_head *iter;
845 netdev_for_each_lower_dev(lag_dev, dev, iter) {
846 if (prestera_netdev_check(dev)) {
847 err = prestera_netdev_port_event(lag_dev, dev, event,
857 static int prestera_netdev_event_handler(struct notifier_block *nb,
858 unsigned long event, void *ptr)
860 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
863 if (prestera_netdev_check(dev))
864 err = prestera_netdev_port_event(dev, dev, event, ptr);
865 else if (netif_is_lag_master(dev))
866 err = prestera_netdevice_lag_event(dev, event, ptr);
868 return notifier_from_errno(err);
871 static int prestera_netdev_event_handler_register(struct prestera_switch *sw)
873 sw->netdev_nb.notifier_call = prestera_netdev_event_handler;
875 return register_netdevice_notifier(&sw->netdev_nb);
878 static void prestera_netdev_event_handler_unregister(struct prestera_switch *sw)
880 unregister_netdevice_notifier(&sw->netdev_nb);
883 static int prestera_switch_init(struct prestera_switch *sw)
887 err = prestera_hw_switch_init(sw);
889 dev_err(prestera_dev(sw), "Failed to init Switch device\n");
893 rwlock_init(&sw->port_list_lock);
894 INIT_LIST_HEAD(&sw->port_list);
896 err = prestera_switch_set_base_mac_addr(sw);
900 err = prestera_netdev_event_handler_register(sw);
904 err = prestera_switchdev_init(sw);
906 goto err_swdev_register;
908 err = prestera_rxtx_switch_init(sw);
910 goto err_rxtx_register;
912 err = prestera_event_handlers_register(sw);
914 goto err_handlers_register;
916 err = prestera_acl_init(sw);
920 err = prestera_span_init(sw);
924 err = prestera_devlink_traps_register(sw);
926 goto err_dl_register;
928 err = prestera_lag_init(sw);
932 err = prestera_create_ports(sw);
934 goto err_ports_create;
936 prestera_devlink_register(sw);
940 prestera_lag_fini(sw);
942 prestera_devlink_traps_unregister(sw);
944 prestera_span_fini(sw);
946 prestera_acl_fini(sw);
948 prestera_event_handlers_unregister(sw);
949 err_handlers_register:
950 prestera_rxtx_switch_fini(sw);
952 prestera_switchdev_fini(sw);
954 prestera_netdev_event_handler_unregister(sw);
955 prestera_hw_switch_fini(sw);
960 static void prestera_switch_fini(struct prestera_switch *sw)
962 prestera_devlink_unregister(sw);
963 prestera_destroy_ports(sw);
964 prestera_lag_fini(sw);
965 prestera_devlink_traps_unregister(sw);
966 prestera_span_fini(sw);
967 prestera_acl_fini(sw);
968 prestera_event_handlers_unregister(sw);
969 prestera_rxtx_switch_fini(sw);
970 prestera_switchdev_fini(sw);
971 prestera_netdev_event_handler_unregister(sw);
972 prestera_hw_switch_fini(sw);
975 int prestera_device_register(struct prestera_device *dev)
977 struct prestera_switch *sw;
980 sw = prestera_devlink_alloc(dev);
987 err = prestera_switch_init(sw);
989 prestera_devlink_free(sw);
995 EXPORT_SYMBOL(prestera_device_register);
997 void prestera_device_unregister(struct prestera_device *dev)
999 struct prestera_switch *sw = dev->priv;
1001 prestera_switch_fini(sw);
1002 prestera_devlink_free(sw);
1004 EXPORT_SYMBOL(prestera_device_unregister);
1006 static int __init prestera_module_init(void)
1008 prestera_wq = alloc_workqueue("prestera", 0, 0);
1015 static void __exit prestera_module_exit(void)
1017 destroy_workqueue(prestera_wq);
1020 module_init(prestera_module_init);
1021 module_exit(prestera_module_exit);
1023 MODULE_LICENSE("Dual BSD/GPL");
1024 MODULE_DESCRIPTION("Marvell Prestera switch driver");