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>
12 #include <linux/phylink.h>
15 #include "prestera_hw.h"
16 #include "prestera_acl.h"
17 #include "prestera_flow.h"
18 #include "prestera_span.h"
19 #include "prestera_rxtx.h"
20 #include "prestera_devlink.h"
21 #include "prestera_ethtool.h"
22 #include "prestera_counter.h"
23 #include "prestera_switchdev.h"
25 #define PRESTERA_MTU_DEFAULT 1536
27 #define PRESTERA_STATS_DELAY_MS 1000
29 #define PRESTERA_MAC_ADDR_NUM_MAX 255
31 static struct workqueue_struct *prestera_wq;
32 static struct workqueue_struct *prestera_owq;
34 void prestera_queue_work(struct work_struct *work)
36 queue_work(prestera_owq, work);
39 void prestera_queue_delayed_work(struct delayed_work *work, unsigned long delay)
41 queue_delayed_work(prestera_wq, work, delay);
44 void prestera_queue_drain(void)
46 drain_workqueue(prestera_wq);
47 drain_workqueue(prestera_owq);
50 int prestera_port_learning_set(struct prestera_port *port, bool learn)
52 return prestera_hw_port_learning_set(port, learn);
55 int prestera_port_uc_flood_set(struct prestera_port *port, bool flood)
57 return prestera_hw_port_uc_flood_set(port, flood);
60 int prestera_port_mc_flood_set(struct prestera_port *port, bool flood)
62 return prestera_hw_port_mc_flood_set(port, flood);
65 int prestera_port_br_locked_set(struct prestera_port *port, bool br_locked)
67 return prestera_hw_port_br_locked_set(port, br_locked);
70 int prestera_port_pvid_set(struct prestera_port *port, u16 vid)
72 enum prestera_accept_frm_type frm_type;
75 frm_type = PRESTERA_ACCEPT_FRAME_TYPE_TAGGED;
78 err = prestera_hw_vlan_port_vid_set(port, vid);
82 frm_type = PRESTERA_ACCEPT_FRAME_TYPE_ALL;
85 err = prestera_hw_port_accept_frm_type(port, frm_type);
86 if (err && frm_type == PRESTERA_ACCEPT_FRAME_TYPE_ALL)
87 prestera_hw_vlan_port_vid_set(port, port->pvid);
93 struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw,
94 u32 dev_id, u32 hw_id)
96 struct prestera_port *port = NULL, *tmp;
98 read_lock(&sw->port_list_lock);
99 list_for_each_entry(tmp, &sw->port_list, list) {
100 if (tmp->dev_id == dev_id && tmp->hw_id == hw_id) {
105 read_unlock(&sw->port_list_lock);
110 struct prestera_port *prestera_find_port(struct prestera_switch *sw, u32 id)
112 struct prestera_port *port = NULL, *tmp;
114 read_lock(&sw->port_list_lock);
115 list_for_each_entry(tmp, &sw->port_list, list) {
121 read_unlock(&sw->port_list_lock);
126 struct prestera_switch *prestera_switch_get(struct net_device *dev)
128 struct prestera_port *port;
130 port = prestera_port_dev_lower_find(dev);
131 return port ? port->sw : NULL;
134 int prestera_port_cfg_mac_read(struct prestera_port *port,
135 struct prestera_port_mac_config *cfg)
137 *cfg = port->cfg_mac;
141 int prestera_port_cfg_mac_write(struct prestera_port *port,
142 struct prestera_port_mac_config *cfg)
146 err = prestera_hw_port_mac_mode_set(port, cfg->admin,
147 cfg->mode, cfg->inband, cfg->speed,
148 cfg->duplex, cfg->fec);
152 port->cfg_mac = *cfg;
156 static int prestera_port_open(struct net_device *dev)
158 struct prestera_port *port = netdev_priv(dev);
159 struct prestera_port_mac_config cfg_mac;
162 if (port->phy_link) {
163 phylink_start(port->phy_link);
165 if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) {
166 err = prestera_port_cfg_mac_read(port, &cfg_mac);
168 cfg_mac.admin = true;
169 err = prestera_port_cfg_mac_write(port,
173 port->cfg_phy.admin = true;
174 err = prestera_hw_port_phy_mode_set(port, true,
177 port->adver_link_modes,
182 netif_start_queue(dev);
187 static int prestera_port_close(struct net_device *dev)
189 struct prestera_port *port = netdev_priv(dev);
190 struct prestera_port_mac_config cfg_mac;
193 netif_stop_queue(dev);
195 if (port->phy_link) {
196 phylink_stop(port->phy_link);
197 phylink_disconnect_phy(port->phy_link);
198 err = prestera_port_cfg_mac_read(port, &cfg_mac);
200 cfg_mac.admin = false;
201 prestera_port_cfg_mac_write(port, &cfg_mac);
204 if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) {
205 err = prestera_port_cfg_mac_read(port, &cfg_mac);
207 cfg_mac.admin = false;
208 prestera_port_cfg_mac_write(port, &cfg_mac);
211 port->cfg_phy.admin = false;
212 err = prestera_hw_port_phy_mode_set(port, false, port->autoneg,
214 port->adver_link_modes,
223 prestera_port_mac_state_cache_read(struct prestera_port *port,
224 struct prestera_port_mac_state *state)
226 spin_lock(&port->state_mac_lock);
227 *state = port->state_mac;
228 spin_unlock(&port->state_mac_lock);
232 prestera_port_mac_state_cache_write(struct prestera_port *port,
233 struct prestera_port_mac_state *state)
235 spin_lock(&port->state_mac_lock);
236 port->state_mac = *state;
237 spin_unlock(&port->state_mac_lock);
240 static struct prestera_port *prestera_pcs_to_port(struct phylink_pcs *pcs)
242 return container_of(pcs, struct prestera_port, phylink_pcs);
245 static void prestera_mac_config(struct phylink_config *config,
246 unsigned int an_mode,
247 const struct phylink_link_state *state)
251 static void prestera_mac_link_down(struct phylink_config *config,
252 unsigned int mode, phy_interface_t interface)
254 struct net_device *ndev = to_net_dev(config->dev);
255 struct prestera_port *port = netdev_priv(ndev);
256 struct prestera_port_mac_state state_mac;
258 /* Invalidate. Parameters will update on next link event. */
259 memset(&state_mac, 0, sizeof(state_mac));
260 state_mac.valid = false;
261 prestera_port_mac_state_cache_write(port, &state_mac);
264 static void prestera_mac_link_up(struct phylink_config *config,
265 struct phy_device *phy,
266 unsigned int mode, phy_interface_t interface,
267 int speed, int duplex,
268 bool tx_pause, bool rx_pause)
272 static struct phylink_pcs *
273 prestera_mac_select_pcs(struct phylink_config *config,
274 phy_interface_t interface)
276 struct net_device *dev = to_net_dev(config->dev);
277 struct prestera_port *port = netdev_priv(dev);
279 return &port->phylink_pcs;
282 static void prestera_pcs_get_state(struct phylink_pcs *pcs,
283 struct phylink_link_state *state)
285 struct prestera_port *port = container_of(pcs, struct prestera_port,
287 struct prestera_port_mac_state smac;
289 prestera_port_mac_state_cache_read(port, &smac);
292 state->link = smac.oper ? 1 : 0;
293 /* AN is completed, when port is up */
294 state->an_complete = (smac.oper && port->autoneg) ? 1 : 0;
295 state->speed = smac.speed;
296 state->duplex = smac.duplex;
299 state->an_complete = 0;
303 static int prestera_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
304 phy_interface_t interface,
305 const unsigned long *advertising,
306 bool permit_pause_to_mac)
308 struct prestera_port *port = prestera_pcs_to_port(pcs);
309 struct prestera_port_mac_config cfg_mac;
312 err = prestera_port_cfg_mac_read(port, &cfg_mac);
316 cfg_mac.admin = true;
317 cfg_mac.fec = PRESTERA_PORT_FEC_OFF;
318 cfg_mac.inband = neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED;
321 case PHY_INTERFACE_MODE_10GBASER:
322 cfg_mac.speed = SPEED_10000;
323 cfg_mac.mode = PRESTERA_MAC_MODE_SR_LR;
325 case PHY_INTERFACE_MODE_2500BASEX:
326 cfg_mac.speed = SPEED_2500;
327 cfg_mac.duplex = DUPLEX_FULL;
328 cfg_mac.mode = PRESTERA_MAC_MODE_SGMII;
330 case PHY_INTERFACE_MODE_SGMII:
331 cfg_mac.mode = PRESTERA_MAC_MODE_SGMII;
333 case PHY_INTERFACE_MODE_1000BASEX:
335 cfg_mac.speed = SPEED_1000;
336 cfg_mac.duplex = DUPLEX_FULL;
337 cfg_mac.mode = PRESTERA_MAC_MODE_1000BASE_X;
341 err = prestera_port_cfg_mac_write(port, &cfg_mac);
348 static void prestera_pcs_an_restart(struct phylink_pcs *pcs)
350 /* TODO: add 1000basex AN restart support
351 * (Currently FW has no support for 1000baseX AN restart, but it will in the future,
352 * so as for now the function would stay empty.)
356 static const struct phylink_mac_ops prestera_mac_ops = {
357 .mac_select_pcs = prestera_mac_select_pcs,
358 .mac_config = prestera_mac_config,
359 .mac_link_down = prestera_mac_link_down,
360 .mac_link_up = prestera_mac_link_up,
363 static const struct phylink_pcs_ops prestera_pcs_ops = {
364 .pcs_get_state = prestera_pcs_get_state,
365 .pcs_config = prestera_pcs_config,
366 .pcs_an_restart = prestera_pcs_an_restart,
369 static int prestera_port_sfp_bind(struct prestera_port *port)
371 struct prestera_switch *sw = port->sw;
372 struct device_node *ports, *node;
373 struct fwnode_handle *fwnode;
374 struct phylink *phy_link;
381 ports = of_find_node_by_name(sw->np, "ports");
383 for_each_child_of_node(ports, node) {
386 err = of_property_read_u32(node, "prestera,port-num", &num);
388 dev_err(sw->dev->dev,
389 "device node %pOF has no valid reg property: %d\n",
394 if (port->fp_id != num)
397 port->phylink_pcs.ops = &prestera_pcs_ops;
398 port->phylink_pcs.neg_mode = true;
400 port->phy_config.dev = &port->dev->dev;
401 port->phy_config.type = PHYLINK_NETDEV;
403 fwnode = of_fwnode_handle(node);
405 __set_bit(PHY_INTERFACE_MODE_10GBASER,
406 port->phy_config.supported_interfaces);
407 __set_bit(PHY_INTERFACE_MODE_2500BASEX,
408 port->phy_config.supported_interfaces);
409 __set_bit(PHY_INTERFACE_MODE_SGMII,
410 port->phy_config.supported_interfaces);
411 __set_bit(PHY_INTERFACE_MODE_1000BASEX,
412 port->phy_config.supported_interfaces);
414 port->phy_config.mac_capabilities =
415 MAC_1000 | MAC_2500FD | MAC_10000FD;
417 phy_link = phylink_create(&port->phy_config, fwnode,
418 PHY_INTERFACE_MODE_INTERNAL,
420 if (IS_ERR(phy_link)) {
421 netdev_err(port->dev, "failed to create phylink\n");
422 err = PTR_ERR(phy_link);
426 port->phy_link = phy_link;
436 static int prestera_port_sfp_unbind(struct prestera_port *port)
439 phylink_destroy(port->phy_link);
444 static netdev_tx_t prestera_port_xmit(struct sk_buff *skb,
445 struct net_device *dev)
447 return prestera_rxtx_xmit(netdev_priv(dev), skb);
450 int prestera_is_valid_mac_addr(struct prestera_port *port, const u8 *addr)
452 if (!is_valid_ether_addr(addr))
453 return -EADDRNOTAVAIL;
455 /* firmware requires that port's MAC address contains first 5 bytes
456 * of the base MAC address
458 if (memcmp(port->sw->base_mac, addr, ETH_ALEN - 1))
464 static int prestera_port_set_mac_address(struct net_device *dev, void *p)
466 struct prestera_port *port = netdev_priv(dev);
467 struct sockaddr *addr = p;
470 err = prestera_is_valid_mac_addr(port, addr->sa_data);
474 err = prestera_hw_port_mac_set(port, addr->sa_data);
478 eth_hw_addr_set(dev, addr->sa_data);
483 static int prestera_port_change_mtu(struct net_device *dev, int mtu)
485 struct prestera_port *port = netdev_priv(dev);
488 err = prestera_hw_port_mtu_set(port, mtu);
497 static void prestera_port_get_stats64(struct net_device *dev,
498 struct rtnl_link_stats64 *stats)
500 struct prestera_port *port = netdev_priv(dev);
501 struct prestera_port_stats *port_stats = &port->cached_hw_stats.stats;
503 stats->rx_packets = port_stats->broadcast_frames_received +
504 port_stats->multicast_frames_received +
505 port_stats->unicast_frames_received;
507 stats->tx_packets = port_stats->broadcast_frames_sent +
508 port_stats->multicast_frames_sent +
509 port_stats->unicast_frames_sent;
511 stats->rx_bytes = port_stats->good_octets_received;
513 stats->tx_bytes = port_stats->good_octets_sent;
515 stats->rx_errors = port_stats->rx_error_frame_received;
516 stats->tx_errors = port_stats->mac_trans_error;
518 stats->rx_dropped = port_stats->buffer_overrun;
519 stats->tx_dropped = 0;
521 stats->multicast = port_stats->multicast_frames_received;
522 stats->collisions = port_stats->excessive_collision;
524 stats->rx_crc_errors = port_stats->bad_crc;
527 static void prestera_port_get_hw_stats(struct prestera_port *port)
529 prestera_hw_port_stats_get(port, &port->cached_hw_stats.stats);
532 static void prestera_port_stats_update(struct work_struct *work)
534 struct prestera_port *port =
535 container_of(work, struct prestera_port,
536 cached_hw_stats.caching_dw.work);
538 prestera_port_get_hw_stats(port);
540 queue_delayed_work(prestera_wq, &port->cached_hw_stats.caching_dw,
541 msecs_to_jiffies(PRESTERA_STATS_DELAY_MS));
544 static int prestera_port_setup_tc(struct net_device *dev,
545 enum tc_setup_type type,
548 struct prestera_port *port = netdev_priv(dev);
552 return prestera_flow_block_setup(port, type_data);
558 static const struct net_device_ops prestera_netdev_ops = {
559 .ndo_open = prestera_port_open,
560 .ndo_stop = prestera_port_close,
561 .ndo_start_xmit = prestera_port_xmit,
562 .ndo_setup_tc = prestera_port_setup_tc,
563 .ndo_change_mtu = prestera_port_change_mtu,
564 .ndo_get_stats64 = prestera_port_get_stats64,
565 .ndo_set_mac_address = prestera_port_set_mac_address,
568 int prestera_port_autoneg_set(struct prestera_port *port, u64 link_modes)
572 if (port->autoneg && port->adver_link_modes == link_modes)
575 err = prestera_hw_port_phy_mode_set(port, port->cfg_phy.admin,
581 port->adver_fec = BIT(PRESTERA_PORT_FEC_OFF);
582 port->adver_link_modes = link_modes;
583 port->cfg_phy.mode = 0;
584 port->autoneg = true;
589 static void prestera_port_list_add(struct prestera_port *port)
591 write_lock(&port->sw->port_list_lock);
592 list_add(&port->list, &port->sw->port_list);
593 write_unlock(&port->sw->port_list_lock);
596 static void prestera_port_list_del(struct prestera_port *port)
598 write_lock(&port->sw->port_list_lock);
599 list_del(&port->list);
600 write_unlock(&port->sw->port_list_lock);
603 static int prestera_port_create(struct prestera_switch *sw, u32 id)
605 struct prestera_port_mac_config cfg_mac;
606 struct prestera_port *port;
607 struct net_device *dev;
610 dev = alloc_etherdev(sizeof(*port));
614 port = netdev_priv(dev);
616 INIT_LIST_HEAD(&port->vlans_list);
617 port->pvid = PRESTERA_DEFAULT_VID;
623 spin_lock_init(&port->state_mac_lock);
625 err = prestera_hw_port_info_get(port, &port->dev_id, &port->hw_id,
628 dev_err(prestera_dev(sw), "Failed to get port(%u) info\n", id);
629 goto err_port_info_get;
632 err = prestera_devlink_port_register(port);
634 goto err_dl_port_register;
636 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_HW_TC;
637 dev->netdev_ops = &prestera_netdev_ops;
638 dev->ethtool_ops = &prestera_ethtool_ops;
639 SET_NETDEV_DEV(dev, sw->dev->dev);
640 SET_NETDEV_DEVLINK_PORT(dev, &port->dl_port);
642 if (port->caps.transceiver != PRESTERA_PORT_TCVR_SFP)
643 netif_carrier_off(dev);
645 dev->mtu = min_t(unsigned int, sw->mtu_max, PRESTERA_MTU_DEFAULT);
646 dev->min_mtu = sw->mtu_min;
647 dev->max_mtu = sw->mtu_max;
649 err = prestera_hw_port_mtu_set(port, dev->mtu);
651 dev_err(prestera_dev(sw), "Failed to set port(%u) mtu(%d)\n",
656 if (port->fp_id >= PRESTERA_MAC_ADDR_NUM_MAX) {
661 eth_hw_addr_gen(dev, sw->base_mac, port->fp_id);
662 /* firmware requires that port's MAC address consist of the first
663 * 5 bytes of the base MAC address
665 if (memcmp(dev->dev_addr, sw->base_mac, ETH_ALEN - 1)) {
666 dev_warn(prestera_dev(sw), "Port MAC address wraps for port(%u)\n", id);
667 dev_addr_mod(dev, 0, sw->base_mac, ETH_ALEN - 1);
670 err = prestera_hw_port_mac_set(port, dev->dev_addr);
672 dev_err(prestera_dev(sw), "Failed to set port(%u) mac addr\n", id);
676 err = prestera_hw_port_cap_get(port, &port->caps);
678 dev_err(prestera_dev(sw), "Failed to get port(%u) caps\n", id);
682 port->adver_link_modes = port->caps.supp_link_modes;
684 port->autoneg = true;
686 /* initialize config mac */
687 if (port->caps.transceiver != PRESTERA_PORT_TCVR_SFP) {
688 cfg_mac.admin = true;
689 cfg_mac.mode = PRESTERA_MAC_MODE_INTERNAL;
691 cfg_mac.admin = false;
692 cfg_mac.mode = PRESTERA_MAC_MODE_MAX;
696 cfg_mac.duplex = DUPLEX_UNKNOWN;
697 cfg_mac.fec = PRESTERA_PORT_FEC_OFF;
699 err = prestera_port_cfg_mac_write(port, &cfg_mac);
701 dev_err(prestera_dev(sw),
702 "Failed to set port(%u) mac mode\n", id);
706 /* initialize config phy (if this is inegral) */
707 if (port->caps.transceiver != PRESTERA_PORT_TCVR_SFP) {
708 port->cfg_phy.mdix = ETH_TP_MDI_AUTO;
709 port->cfg_phy.admin = false;
710 err = prestera_hw_port_phy_mode_set(port,
715 dev_err(prestera_dev(sw),
716 "Failed to set port(%u) phy mode\n", id);
721 err = prestera_rxtx_port_init(port);
725 INIT_DELAYED_WORK(&port->cached_hw_stats.caching_dw,
726 &prestera_port_stats_update);
728 prestera_port_list_add(port);
730 err = register_netdev(dev);
732 goto err_register_netdev;
734 err = prestera_port_sfp_bind(port);
741 unregister_netdev(dev);
743 prestera_port_list_del(port);
745 prestera_devlink_port_unregister(port);
746 err_dl_port_register:
752 static void prestera_port_destroy(struct prestera_port *port)
754 struct net_device *dev = port->dev;
756 cancel_delayed_work_sync(&port->cached_hw_stats.caching_dw);
757 unregister_netdev(dev);
758 prestera_port_list_del(port);
759 prestera_devlink_port_unregister(port);
763 static void prestera_destroy_ports(struct prestera_switch *sw)
765 struct prestera_port *port, *tmp;
767 list_for_each_entry_safe(port, tmp, &sw->port_list, list)
768 prestera_port_destroy(port);
771 static int prestera_create_ports(struct prestera_switch *sw)
773 struct prestera_port *port, *tmp;
777 for (port_idx = 0; port_idx < sw->port_count; port_idx++) {
778 err = prestera_port_create(sw, port_idx);
780 goto err_port_create;
786 list_for_each_entry_safe(port, tmp, &sw->port_list, list) {
787 prestera_port_sfp_unbind(port);
788 prestera_port_destroy(port);
794 static void prestera_port_handle_event(struct prestera_switch *sw,
795 struct prestera_event *evt, void *arg)
797 struct prestera_port_mac_state smac;
798 struct prestera_port_event *pevt;
799 struct delayed_work *caching_dw;
800 struct prestera_port *port;
802 if (evt->id == PRESTERA_PORT_EVENT_MAC_STATE_CHANGED) {
803 pevt = &evt->port_evt;
804 port = prestera_find_port(sw, pevt->port_id);
805 if (!port || !port->dev)
808 caching_dw = &port->cached_hw_stats.caching_dw;
810 memset(&smac, 0, sizeof(smac));
812 smac.oper = pevt->data.mac.oper;
814 smac.mode = pevt->data.mac.mode;
815 smac.speed = pevt->data.mac.speed;
816 smac.duplex = pevt->data.mac.duplex;
817 smac.fc = pevt->data.mac.fc;
818 smac.fec = pevt->data.mac.fec;
820 prestera_port_mac_state_cache_write(port, &smac);
822 if (port->state_mac.oper) {
824 phylink_mac_change(port->phy_link, true);
826 netif_carrier_on(port->dev);
828 if (!delayed_work_pending(caching_dw))
829 queue_delayed_work(prestera_wq, caching_dw, 0);
832 phylink_mac_change(port->phy_link, false);
833 else if (netif_running(port->dev) && netif_carrier_ok(port->dev))
834 netif_carrier_off(port->dev);
836 if (delayed_work_pending(caching_dw))
837 cancel_delayed_work(caching_dw);
842 static int prestera_event_handlers_register(struct prestera_switch *sw)
844 return prestera_hw_event_handler_register(sw, PRESTERA_EVENT_TYPE_PORT,
845 prestera_port_handle_event,
849 static void prestera_event_handlers_unregister(struct prestera_switch *sw)
851 prestera_hw_event_handler_unregister(sw, PRESTERA_EVENT_TYPE_PORT,
852 prestera_port_handle_event);
855 static int prestera_switch_set_base_mac_addr(struct prestera_switch *sw)
860 ret = of_get_mac_address(sw->np, sw->base_mac);
861 if (!is_valid_ether_addr(sw->base_mac) || ret) {
862 eth_random_addr(sw->base_mac);
863 dev_info(prestera_dev(sw), "using random base mac address\n");
866 return prestera_hw_switch_mac_set(sw, sw->base_mac);
869 struct prestera_lag *prestera_lag_by_id(struct prestera_switch *sw, u16 id)
871 return id < sw->lag_max ? &sw->lags[id] : NULL;
874 static struct prestera_lag *prestera_lag_by_dev(struct prestera_switch *sw,
875 struct net_device *dev)
877 struct prestera_lag *lag;
880 for (id = 0; id < sw->lag_max; id++) {
889 int prestera_lag_id(struct prestera_switch *sw,
890 struct net_device *lag_dev, u16 *lag_id)
892 struct prestera_lag *lag;
896 for (id = 0; id < sw->lag_max; id++) {
897 lag = prestera_lag_by_id(sw, id);
898 if (lag->member_count) {
899 if (lag->dev == lag_dev) {
903 } else if (free_id < 0) {
913 static struct prestera_lag *prestera_lag_create(struct prestera_switch *sw,
914 struct net_device *lag_dev)
916 struct prestera_lag *lag = NULL;
919 for (id = 0; id < sw->lag_max; id++) {
925 INIT_LIST_HEAD(&lag->members);
932 static void prestera_lag_destroy(struct prestera_switch *sw,
933 struct prestera_lag *lag)
935 WARN_ON(!list_empty(&lag->members));
936 lag->member_count = 0;
940 static int prestera_lag_port_add(struct prestera_port *port,
941 struct net_device *lag_dev)
943 struct prestera_switch *sw = port->sw;
944 struct prestera_lag *lag;
947 lag = prestera_lag_by_dev(sw, lag_dev);
949 lag = prestera_lag_create(sw, lag_dev);
954 if (lag->member_count >= sw->lag_member_max)
957 err = prestera_hw_lag_member_add(port, lag->lag_id);
959 if (!lag->member_count)
960 prestera_lag_destroy(sw, lag);
964 list_add(&port->lag_member, &lag->members);
971 static int prestera_lag_port_del(struct prestera_port *port)
973 struct prestera_switch *sw = port->sw;
974 struct prestera_lag *lag = port->lag;
977 if (!lag || !lag->member_count)
980 err = prestera_hw_lag_member_del(port, lag->lag_id);
984 list_del(&port->lag_member);
988 if (netif_is_bridge_port(lag->dev)) {
989 struct net_device *br_dev;
991 br_dev = netdev_master_upper_dev_get(lag->dev);
993 prestera_bridge_port_leave(br_dev, port);
996 if (!lag->member_count)
997 prestera_lag_destroy(sw, lag);
1002 bool prestera_port_is_lag_member(const struct prestera_port *port)
1007 u16 prestera_port_lag_id(const struct prestera_port *port)
1009 return port->lag->lag_id;
1012 static int prestera_lag_init(struct prestera_switch *sw)
1016 sw->lags = kcalloc(sw->lag_max, sizeof(*sw->lags), GFP_KERNEL);
1020 for (id = 0; id < sw->lag_max; id++)
1021 sw->lags[id].lag_id = id;
1026 static void prestera_lag_fini(struct prestera_switch *sw)
1030 for (idx = 0; idx < sw->lag_max; idx++)
1031 WARN_ON(sw->lags[idx].member_count);
1036 bool prestera_netdev_check(const struct net_device *dev)
1038 return dev->netdev_ops == &prestera_netdev_ops;
1041 static int prestera_lower_dev_walk(struct net_device *dev,
1042 struct netdev_nested_priv *priv)
1044 struct prestera_port **pport = (struct prestera_port **)priv->data;
1046 if (prestera_netdev_check(dev)) {
1047 *pport = netdev_priv(dev);
1054 struct prestera_port *prestera_port_dev_lower_find(struct net_device *dev)
1056 struct prestera_port *port = NULL;
1057 struct netdev_nested_priv priv = {
1058 .data = (void *)&port,
1061 if (prestera_netdev_check(dev))
1062 return netdev_priv(dev);
1064 netdev_walk_all_lower_dev(dev, prestera_lower_dev_walk, &priv);
1069 static int prestera_netdev_port_lower_event(struct net_device *dev,
1070 unsigned long event, void *ptr)
1072 struct netdev_notifier_changelowerstate_info *info = ptr;
1073 struct netdev_lag_lower_state_info *lower_state_info;
1074 struct prestera_port *port = netdev_priv(dev);
1077 if (!netif_is_lag_port(dev))
1079 if (!prestera_port_is_lag_member(port))
1082 lower_state_info = info->lower_state_info;
1083 enabled = lower_state_info->link_up && lower_state_info->tx_enabled;
1085 return prestera_hw_lag_member_enable(port, port->lag->lag_id, enabled);
1088 static bool prestera_lag_master_check(struct net_device *lag_dev,
1089 struct netdev_lag_upper_info *info,
1090 struct netlink_ext_ack *ext_ack)
1092 if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
1093 NL_SET_ERR_MSG_MOD(ext_ack, "Unsupported LAG Tx type");
1100 static int prestera_netdev_port_event(struct net_device *lower,
1101 struct net_device *dev,
1102 unsigned long event, void *ptr)
1104 struct netdev_notifier_info *info = ptr;
1105 struct netdev_notifier_changeupper_info *cu_info;
1106 struct prestera_port *port = netdev_priv(dev);
1107 struct netlink_ext_ack *extack;
1108 struct net_device *upper;
1110 extack = netdev_notifier_info_to_extack(info);
1111 cu_info = container_of(info,
1112 struct netdev_notifier_changeupper_info,
1116 case NETDEV_PRECHANGEUPPER:
1117 upper = cu_info->upper_dev;
1118 if (!netif_is_bridge_master(upper) &&
1119 !netif_is_lag_master(upper)) {
1120 NL_SET_ERR_MSG_MOD(extack, "Unknown upper device type");
1124 if (!cu_info->linking)
1127 if (netdev_has_any_upper_dev(upper)) {
1128 NL_SET_ERR_MSG_MOD(extack, "Upper device is already enslaved");
1132 if (netif_is_lag_master(upper) &&
1133 !prestera_lag_master_check(upper, cu_info->upper_info, extack))
1135 if (netif_is_lag_master(upper) && vlan_uses_dev(dev)) {
1136 NL_SET_ERR_MSG_MOD(extack,
1137 "Master device is a LAG master and port has a VLAN");
1140 if (netif_is_lag_port(dev) && is_vlan_dev(upper) &&
1141 !netif_is_lag_master(vlan_dev_real_dev(upper))) {
1142 NL_SET_ERR_MSG_MOD(extack,
1143 "Can not put a VLAN on a LAG port");
1148 case NETDEV_CHANGEUPPER:
1149 upper = cu_info->upper_dev;
1150 if (netif_is_bridge_master(upper)) {
1151 if (cu_info->linking)
1152 return prestera_bridge_port_join(upper, port,
1155 prestera_bridge_port_leave(upper, port);
1156 } else if (netif_is_lag_master(upper)) {
1157 if (cu_info->linking)
1158 return prestera_lag_port_add(port, upper);
1160 prestera_lag_port_del(port);
1164 case NETDEV_CHANGELOWERSTATE:
1165 return prestera_netdev_port_lower_event(dev, event, ptr);
1171 static int prestera_netdevice_lag_event(struct net_device *lag_dev,
1172 unsigned long event, void *ptr)
1174 struct net_device *dev;
1175 struct list_head *iter;
1178 netdev_for_each_lower_dev(lag_dev, dev, iter) {
1179 if (prestera_netdev_check(dev)) {
1180 err = prestera_netdev_port_event(lag_dev, dev, event,
1190 static int prestera_netdev_event_handler(struct notifier_block *nb,
1191 unsigned long event, void *ptr)
1193 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1196 if (prestera_netdev_check(dev))
1197 err = prestera_netdev_port_event(dev, dev, event, ptr);
1198 else if (netif_is_lag_master(dev))
1199 err = prestera_netdevice_lag_event(dev, event, ptr);
1201 return notifier_from_errno(err);
1204 struct prestera_mdb_entry *
1205 prestera_mdb_entry_create(struct prestera_switch *sw,
1206 const unsigned char *addr, u16 vid)
1208 struct prestera_flood_domain *flood_domain;
1209 struct prestera_mdb_entry *mdb_entry;
1211 mdb_entry = kzalloc(sizeof(*mdb_entry), GFP_KERNEL);
1215 flood_domain = prestera_flood_domain_create(sw);
1217 goto err_flood_domain_create;
1220 mdb_entry->vid = vid;
1221 mdb_entry->flood_domain = flood_domain;
1222 ether_addr_copy(mdb_entry->addr, addr);
1224 if (prestera_hw_mdb_create(mdb_entry))
1225 goto err_mdb_hw_create;
1230 prestera_flood_domain_destroy(flood_domain);
1231 err_flood_domain_create:
1237 void prestera_mdb_entry_destroy(struct prestera_mdb_entry *mdb_entry)
1239 prestera_hw_mdb_destroy(mdb_entry);
1240 prestera_flood_domain_destroy(mdb_entry->flood_domain);
1244 struct prestera_flood_domain *
1245 prestera_flood_domain_create(struct prestera_switch *sw)
1247 struct prestera_flood_domain *domain;
1249 domain = kzalloc(sizeof(*domain), GFP_KERNEL);
1255 if (prestera_hw_flood_domain_create(domain)) {
1260 INIT_LIST_HEAD(&domain->flood_domain_port_list);
1265 void prestera_flood_domain_destroy(struct prestera_flood_domain *flood_domain)
1267 WARN_ON(!list_empty(&flood_domain->flood_domain_port_list));
1268 WARN_ON_ONCE(prestera_hw_flood_domain_destroy(flood_domain));
1269 kfree(flood_domain);
1273 prestera_flood_domain_port_create(struct prestera_flood_domain *flood_domain,
1274 struct net_device *dev,
1277 struct prestera_flood_domain_port *flood_domain_port;
1278 bool is_first_port_in_list = false;
1281 flood_domain_port = kzalloc(sizeof(*flood_domain_port), GFP_KERNEL);
1282 if (!flood_domain_port) {
1284 goto err_port_alloc;
1287 flood_domain_port->vid = vid;
1289 if (list_empty(&flood_domain->flood_domain_port_list))
1290 is_first_port_in_list = true;
1292 list_add(&flood_domain_port->flood_domain_port_node,
1293 &flood_domain->flood_domain_port_list);
1295 flood_domain_port->flood_domain = flood_domain;
1296 flood_domain_port->dev = dev;
1298 if (!is_first_port_in_list) {
1299 err = prestera_hw_flood_domain_ports_reset(flood_domain);
1301 goto err_prestera_mdb_port_create_hw;
1304 err = prestera_hw_flood_domain_ports_set(flood_domain);
1306 goto err_prestera_mdb_port_create_hw;
1310 err_prestera_mdb_port_create_hw:
1311 list_del(&flood_domain_port->flood_domain_port_node);
1312 kfree(flood_domain_port);
1318 prestera_flood_domain_port_destroy(struct prestera_flood_domain_port *port)
1320 struct prestera_flood_domain *flood_domain = port->flood_domain;
1322 list_del(&port->flood_domain_port_node);
1324 WARN_ON_ONCE(prestera_hw_flood_domain_ports_reset(flood_domain));
1326 if (!list_empty(&flood_domain->flood_domain_port_list))
1327 WARN_ON_ONCE(prestera_hw_flood_domain_ports_set(flood_domain));
1332 struct prestera_flood_domain_port *
1333 prestera_flood_domain_port_find(struct prestera_flood_domain *flood_domain,
1334 struct net_device *dev, u16 vid)
1336 struct prestera_flood_domain_port *flood_domain_port;
1338 list_for_each_entry(flood_domain_port,
1339 &flood_domain->flood_domain_port_list,
1340 flood_domain_port_node)
1341 if (flood_domain_port->dev == dev &&
1342 vid == flood_domain_port->vid)
1343 return flood_domain_port;
1348 static int prestera_netdev_event_handler_register(struct prestera_switch *sw)
1350 sw->netdev_nb.notifier_call = prestera_netdev_event_handler;
1352 return register_netdevice_notifier(&sw->netdev_nb);
1355 static void prestera_netdev_event_handler_unregister(struct prestera_switch *sw)
1357 unregister_netdevice_notifier(&sw->netdev_nb);
1360 static int prestera_switch_init(struct prestera_switch *sw)
1364 sw->np = sw->dev->dev->of_node;
1366 err = prestera_hw_switch_init(sw);
1368 dev_err(prestera_dev(sw), "Failed to init Switch device\n");
1372 rwlock_init(&sw->port_list_lock);
1373 INIT_LIST_HEAD(&sw->port_list);
1375 err = prestera_switch_set_base_mac_addr(sw);
1379 err = prestera_netdev_event_handler_register(sw);
1383 err = prestera_router_init(sw);
1385 goto err_router_init;
1387 err = prestera_switchdev_init(sw);
1389 goto err_swdev_register;
1391 err = prestera_rxtx_switch_init(sw);
1393 goto err_rxtx_register;
1395 err = prestera_event_handlers_register(sw);
1397 goto err_handlers_register;
1399 err = prestera_counter_init(sw);
1401 goto err_counter_init;
1403 err = prestera_acl_init(sw);
1407 err = prestera_span_init(sw);
1411 err = prestera_devlink_traps_register(sw);
1413 goto err_dl_register;
1415 err = prestera_lag_init(sw);
1419 err = prestera_create_ports(sw);
1421 goto err_ports_create;
1423 prestera_devlink_register(sw);
1427 prestera_lag_fini(sw);
1429 prestera_devlink_traps_unregister(sw);
1431 prestera_span_fini(sw);
1433 prestera_acl_fini(sw);
1435 prestera_counter_fini(sw);
1437 prestera_event_handlers_unregister(sw);
1438 err_handlers_register:
1439 prestera_rxtx_switch_fini(sw);
1441 prestera_switchdev_fini(sw);
1443 prestera_router_fini(sw);
1445 prestera_netdev_event_handler_unregister(sw);
1446 prestera_hw_switch_fini(sw);
1451 static void prestera_switch_fini(struct prestera_switch *sw)
1453 prestera_devlink_unregister(sw);
1454 prestera_destroy_ports(sw);
1455 prestera_lag_fini(sw);
1456 prestera_devlink_traps_unregister(sw);
1457 prestera_span_fini(sw);
1458 prestera_acl_fini(sw);
1459 prestera_counter_fini(sw);
1460 prestera_event_handlers_unregister(sw);
1461 prestera_rxtx_switch_fini(sw);
1462 prestera_switchdev_fini(sw);
1463 prestera_router_fini(sw);
1464 prestera_netdev_event_handler_unregister(sw);
1465 prestera_hw_switch_fini(sw);
1466 of_node_put(sw->np);
1469 int prestera_device_register(struct prestera_device *dev)
1471 struct prestera_switch *sw;
1474 sw = prestera_devlink_alloc(dev);
1481 err = prestera_switch_init(sw);
1483 prestera_devlink_free(sw);
1489 EXPORT_SYMBOL(prestera_device_register);
1491 void prestera_device_unregister(struct prestera_device *dev)
1493 struct prestera_switch *sw = dev->priv;
1495 prestera_switch_fini(sw);
1496 prestera_devlink_free(sw);
1498 EXPORT_SYMBOL(prestera_device_unregister);
1500 static int __init prestera_module_init(void)
1502 prestera_wq = alloc_workqueue("prestera", 0, 0);
1506 prestera_owq = alloc_ordered_workqueue("prestera_ordered", 0);
1507 if (!prestera_owq) {
1508 destroy_workqueue(prestera_wq);
1515 static void __exit prestera_module_exit(void)
1517 destroy_workqueue(prestera_wq);
1518 destroy_workqueue(prestera_owq);
1521 module_init(prestera_module_init);
1522 module_exit(prestera_module_exit);
1524 MODULE_LICENSE("Dual BSD/GPL");
1525 MODULE_DESCRIPTION("Marvell Prestera switch driver");