10  * ice_lag_nop_handler - no-op Rx handler to disable LAG
19  * ice_lag_set_primary - set PF LAG state as Primary
20  * @lag: LAG info struct
22 static void ice_lag_set_primary(struct ice_lag *lag)  in ice_lag_set_primary()  argument
24 	struct ice_pf *pf = lag->pf;  in ice_lag_set_primary()
29 	if (lag->role != ICE_LAG_UNSET && lag->role != ICE_LAG_BACKUP) {  in ice_lag_set_primary()
31 			 netdev_name(lag->netdev));  in ice_lag_set_primary()
35 	lag->role = ICE_LAG_PRIMARY;  in ice_lag_set_primary()
39  * ice_lag_set_backup - set PF LAG state to Backup
40  * @lag: LAG info struct
42 static void ice_lag_set_backup(struct ice_lag *lag)  in ice_lag_set_backup()  argument
44 	struct ice_pf *pf = lag->pf;  in ice_lag_set_backup()
49 	if (lag->role != ICE_LAG_UNSET && lag->role != ICE_LAG_PRIMARY) {  in ice_lag_set_backup()
51 			netdev_name(lag->netdev));  in ice_lag_set_backup()
55 	lag->role = ICE_LAG_BACKUP;  in ice_lag_set_backup()
59  * ice_display_lag_info - print LAG info
60  * @lag: LAG info struct
62 static void ice_display_lag_info(struct ice_lag *lag)  in ice_display_lag_info()  argument
65 	struct device *dev = &lag->pf->pdev->dev;  in ice_display_lag_info()
67 	name = lag->netdev ? netdev_name(lag->netdev) : "unset";  in ice_display_lag_info()
68 	peer = lag->peer_netdev ? netdev_name(lag->peer_netdev) : "unset";  in ice_display_lag_info()
69 	upper = lag->upper_netdev ? netdev_name(lag->upper_netdev) : "unset";  in ice_display_lag_info()
70 	primary = lag->primary ? "TRUE" : "FALSE";  in ice_display_lag_info()
71 	bonded = lag->bonded ? "BONDED" : "UNBONDED";  in ice_display_lag_info()
73 	switch (lag->role) {  in ice_display_lag_info()
96  * @lag: LAG info struct
101 static void ice_lag_info_event(struct ice_lag *lag, void *ptr)  in ice_lag_info_event()  argument
110 	lag_netdev_name = netdev_name(lag->netdev);  in ice_lag_info_event()
113 	if (event_netdev != lag->netdev || !lag->bonded || !lag->upper_netdev)  in ice_lag_info_event()
117 		netdev_dbg(lag->netdev, "Bonding event recv, but mode not active/backup\n");  in ice_lag_info_event()
122 		netdev_dbg(lag->netdev, "Bonding event recv, but secondary info not for us\n");  in ice_lag_info_event()
127 		ice_lag_set_backup(lag);  in ice_lag_info_event()
129 		ice_lag_set_primary(lag);  in ice_lag_info_event()
132 	ice_display_lag_info(lag);  in ice_lag_info_event()
136  * ice_lag_link - handle LAG link event
137  * @lag: LAG info struct
141 ice_lag_link(struct ice_lag *lag, struct netdev_notifier_changeupper_info *info)  in ice_lag_link()  argument
144 	struct ice_pf *pf = lag->pf;  in ice_lag_link()
147 	if (lag->bonded)  in ice_lag_link()
149 			 netdev_name(lag->netdev));  in ice_lag_link()
156 	if (lag->upper_netdev != upper) {  in ice_lag_link()
158 		lag->upper_netdev = upper;  in ice_lag_link()
164 	lag->bonded = true;  in ice_lag_link()
165 	lag->role = ICE_LAG_UNSET;  in ice_lag_link()
167 	/* if this is the first element in an LAG mark as primary */  in ice_lag_link()
168 	lag->primary = !!(peers == 1);  in ice_lag_link()
173  * @lag: LAG info struct
177 ice_lag_unlink(struct ice_lag *lag,  in ice_lag_unlink()  argument
181 	struct ice_pf *pf = lag->pf;  in ice_lag_unlink()
184 	if (!lag->bonded) {  in ice_lag_unlink()
185 		netdev_dbg(lag->netdev, "bonding unlink event on non-LAG netdev\n");  in ice_lag_unlink()
189 	/* determine if we are in the new LAG config or not */  in ice_lag_unlink()
192 		if (netdev_tmp == lag->netdev) {  in ice_lag_unlink()
202 	if (lag->upper_netdev) {  in ice_lag_unlink()
203 		dev_put(lag->upper_netdev);  in ice_lag_unlink()
204 		lag->upper_netdev = NULL;  in ice_lag_unlink()
207 	lag->peer_netdev = NULL;  in ice_lag_unlink()
210 	lag->bonded = false;  in ice_lag_unlink()
211 	lag->role = ICE_LAG_NONE;  in ice_lag_unlink()
216  * @lag: LAG info struct
219 static void ice_lag_unregister(struct ice_lag *lag, struct net_device *netdev)  in ice_lag_unregister()  argument
221 	struct ice_pf *pf = lag->pf;  in ice_lag_unregister()
226 	if (netdev != lag->netdev || !lag->bonded)  in ice_lag_unregister()
229 	if (lag->upper_netdev) {  in ice_lag_unregister()
230 		dev_put(lag->upper_netdev);  in ice_lag_unregister()
231 		lag->upper_netdev = NULL;  in ice_lag_unregister()
236 	lag->bonded = false;  in ice_lag_unregister()
237 	lag->role = ICE_LAG_NONE;  in ice_lag_unregister()
241  * ice_lag_changeupper_event - handle LAG changeupper event
242  * @lag: LAG info struct
247 static void ice_lag_changeupper_event(struct ice_lag *lag, void *ptr)  in ice_lag_changeupper_event()  argument
256 	if (netdev != lag->netdev)  in ice_lag_changeupper_event()
272 		ice_lag_link(lag, info);  in ice_lag_changeupper_event()
274 		ice_lag_unlink(lag, info);  in ice_lag_changeupper_event()
276 	ice_display_lag_info(lag);  in ice_lag_changeupper_event()
280  * ice_lag_changelower_event - handle LAG changelower event
281  * @lag: LAG info struct
286 static void ice_lag_changelower_event(struct ice_lag *lag, void *ptr)  in ice_lag_changelower_event()  argument
290 	if (netdev != lag->netdev)  in ice_lag_changelower_event()
296 		netdev_dbg(netdev, "CHANGELOWER rcvd, but netdev not in LAG. Bail\n");  in ice_lag_changelower_event()
300  * ice_lag_event_handler - handle LAG events from netdev
310 	struct ice_lag *lag;  in ice_lag_event_handler()  local
312 	lag = container_of(notif_blk, struct ice_lag, notif_block);  in ice_lag_event_handler()
314 	if (!lag->netdev)  in ice_lag_event_handler()
323 		ice_lag_changeupper_event(lag, ptr);  in ice_lag_event_handler()
326 		ice_lag_changelower_event(lag, ptr);  in ice_lag_event_handler()
329 		ice_lag_info_event(lag, ptr);  in ice_lag_event_handler()
332 		ice_lag_unregister(lag, netdev);  in ice_lag_event_handler()
342  * ice_register_lag_handler - register LAG handler on netdev
343  * @lag: LAG struct
345 static int ice_register_lag_handler(struct ice_lag *lag)  in ice_register_lag_handler()  argument
347 	struct device *dev = ice_pf_to_dev(lag->pf);  in ice_register_lag_handler()
350 	notif_blk = &lag->notif_block;  in ice_register_lag_handler()
356 			dev_err(dev, "FAIL register LAG event handler!\n");  in ice_register_lag_handler()
359 		dev_dbg(dev, "LAG event handler registered\n");  in ice_register_lag_handler()
365  * ice_unregister_lag_handler - unregister LAG handler on netdev
366  * @lag: LAG struct
368 static void ice_unregister_lag_handler(struct ice_lag *lag)  in ice_unregister_lag_handler()  argument
370 	struct device *dev = ice_pf_to_dev(lag->pf);  in ice_unregister_lag_handler()
373 	notif_blk = &lag->notif_block;  in ice_unregister_lag_handler()
376 		dev_dbg(dev, "LAG event handler unregistered\n");  in ice_unregister_lag_handler()
381  * ice_init_lag - initialize support for LAG
384  * Alloc memory for LAG structs and initialize the elements.
390 	struct ice_lag *lag;  in ice_init_lag()  local
394 	pf->lag = kzalloc(sizeof(*lag), GFP_KERNEL);  in ice_init_lag()
395 	if (!pf->lag)  in ice_init_lag()
397 	lag = pf->lag;  in ice_init_lag()
406 	lag->pf = pf;  in ice_init_lag()
407 	lag->netdev = vsi->netdev;  in ice_init_lag()
408 	lag->role = ICE_LAG_NONE;  in ice_init_lag()
409 	lag->bonded = false;  in ice_init_lag()
410 	lag->peer_netdev = NULL;  in ice_init_lag()
411 	lag->upper_netdev = NULL;  in ice_init_lag()
412 	lag->notif_block.notifier_call = NULL;  in ice_init_lag()
414 	err = ice_register_lag_handler(lag);  in ice_init_lag()
416 		dev_warn(dev, "INIT LAG: Failed to register event handler\n");  in ice_init_lag()
420 	ice_display_lag_info(lag);  in ice_init_lag()
422 	dev_dbg(dev, "INIT LAG complete\n");  in ice_init_lag()
426 	kfree(lag);  in ice_init_lag()
427 	pf->lag = NULL;  in ice_init_lag()
432  * ice_deinit_lag - Clean up LAG
435  * Clean up kernel LAG info and free memory
440 	struct ice_lag *lag;  in ice_deinit_lag()  local
442 	lag = pf->lag;  in ice_deinit_lag()
444 	if (!lag)  in ice_deinit_lag()
447 	if (lag->pf)  in ice_deinit_lag()
448 		ice_unregister_lag_handler(lag);  in ice_deinit_lag()
450 	dev_put(lag->upper_netdev);  in ice_deinit_lag()
452 	dev_put(lag->peer_netdev);  in ice_deinit_lag()
454 	kfree(lag);  in ice_deinit_lag()
456 	pf->lag = NULL;  in ice_deinit_lag()